New upstream version 4.12.3+dfsg1

AUTHORS.md

@@ -0,0 +1,89 @@
+Thanks to at least the following people for sending patches, bug
+reports and various comments. This list may be incomplete, I received
+a lot of mail...
+
+# Maintainers
+* Tomasz Kłoczko <kloczek@pld.org.pl> (2000-2007)
+* Nicolas François <nicolas.francois@centraliens.net> (2007-2014)
+* Serge E. Hallyn <serge@hallyn.com> (2014-now)
+* Christian Brauner <christian@brauner.io> (2019-now)
+* Iker Pedrosa <ipedrosa@redhat.com> (2022-now)
+
+# Authors and contributors
+* Adam Rudnicki <adam@v-lo.krakow.pl>
+* Alan Curry <pacman@tardis.mars.net>
+* Aleksa Sarai <cyphar@cyphar.com>
+* Alexander O. Yuriev <alex@bach.cis.temple.edu>
+* Algis Rudys <arudys@rice.edu>
+* Andreas Jaeger <aj@arthur.rhein-neckar.de>
+* Andy Zaugg <andy.zaugg@gmail.com>
+* Aniello Del Sorbo <anidel@edu-gw.dia.unisa.it>
+* Anton Gluck <gluc@midway.uchicago.edu>
+* Arkadiusz Miskiewicz <misiek@pld.org.pl>
+* Ben Collins <bcollins@debian.org>
+* Brian R. Gaeke <brg@dgate.org>
+* Calle Karlsson <ckn@kash.se>
+* Chip Rosenthal <chip@unicom.com>
+* Chris Evans <lady0110@sable.ox.ac.uk>
+* Chris Lamb <chris@chris-lamb.co.uk>
+* Cristian Gafton <gafton@sorosis.ro>
+* Dan Walsh <dwalsh@redhat.com>
+* Darcy Boese <possum@chardonnay.niagara.com>
+* Dave Hagewood <admin@arrowweb.com>
+* David A. Holland <dholland@hcs.harvard.edu>
+* David Frey <David.Frey@lugs.ch>
+* Ed Carp <ecarp@netcom.com>
+* Ed Neville <ed@s5h.net>
+* Eric W. Biederman" <ebiederm@xmission.com>
+* Floody <flood@evcom.net>
+* Frank Denis <j@4u.net>
+* George Kraft IV <gk4@us.ibm.com>
+* Greg Mortensen <loki@world.std.com>
+* Guido van Rooij
+* Guy Maor <maor@debian.org>
+* Hrvoje Dogan <hdogan@bjesomar.srce.hr>
+* Jakub Hrozek <jhrozek@redhat.com>
+* Janos Farkas <chexum@bankinf.banki.hu>
+* Jason Franklin <jason.franklin@quoininc.com>
+* Jay Soffian <jay@lw.net>
+* Jesse Thilo <Jesse.Thilo@pobox.com>
+* Joey Hess <joey@kite.ml.org>
+* John Adelsberger <jja@umr.edu>
+* Jonathan Hankins <jhankins@mailserv.homewood.k12.al.us>
+* Jon Lewis <jlewis@lewis.org>
+* Joshua Cowan <jcowan@hermit.reslife.okstate.edu>
+* Judd Bourgeois <shagboy@bluesky.net>
+* Juergen Heinzl <unicorn@noris.net>
+* Juha Virtanen <jiivee@iki.fi>
+* Julian Pidancet <julian.pidancet@gmail.com>
+* Julianne Frances Haugh <julie78787@gmail.com>
+* Leonard N. Zubkoff <lnz@dandelion.com>
+* Luca Berra <bluca@www.polimi.it>
+* Lukáš Kuklínek <lkukline@redhat.com>
+* Lutz Schwalowsky <schwalow@mineralogie.uni-hamburg.de>
+* Marc Ewing <marc@redhat.com>
+* Martin Bene <mb@sime.com>
+* Martin Mares <mj@gts.cz>
+* Michael Meskes <meskes@topsystem.de>
+* Michael Talbot-Wilson <mike@calypso.bns.com.au>
+* Michael Vetter <jubalh@iodoru.org>
+* Mike Frysinger <vapier@gentoo.org>
+* Mike Pakovic <mpakovic@users.southeast.net>
+* Nicolas François <nicolas.francois@centraliens.net>
+* Nikos Mavroyanopoulos <nmav@i-net.paiko.gr>
+* Pavel Machek <pavel@bug.ucw.cz>
+* Peter Vrabec <pvrabec@redhat.com>
+* Phillip Street
+* Rafał Maszkowski <rzm@icm.edu.pl>
+* Rani Chouha <ranibey@smartec.com>
+* Sami Kerola <kerolasa@rocketmail.com>
+* Scott Garman <scott.a.garman@intel.com>
+* Sebastian Rick Rijkers <srrijkers@gmail.com>
+* Seraphim Mellos <mellos@ceid.upatras.gr>
+* Shane Watts <shane@nexus.mlckew.edu.au>
+* Steve M. Robbins <steve@nyongwa.montreal.qc.ca>
+* Thorsten Kukuk <kukuk@suse.de>
+* Tim Hockin <thockin@eagle.ais.net>
+* Timo Karjalainen <timok@iki.fi>
+* Ulisses Alonso Camaro <ulisses@pusa.eleinf.uv.es>
+* Werner Fink <werner@suse.de>

COPYING

@@ -1,118 +1,41 @@
-NOTE:
-  This license has been obsoleted by the change to the BSD-style copyright.
-  You may continue to use this license if you wish, but you are under no
-  obligation to do so.
+SPDX-License-Identifier: BSD-3-Clause
 
-(*
-This document is freely plagiarised from the 'Artistic Licence',
-distributed as part of the Perl v4.0 kit by Larry Wall, which is
-available from most major archive sites.  I stole it from CrackLib.
+All files under this project either
 
-	$Id$
-*)
+1. fall under the BSD 3 clause license (by default).
 
-This documents purpose is to state the conditions under which this
-Package (See definition below) viz: "Shadow", the Shadow Password Suite
-which is held by Julianne Frances Haugh, may be copied, such that the
-copyright holder maintains some semblance of artistic control over the
-development of the package, while giving the users of the package the
-right to use and distribute the Package in a more-or-less customary
-fashion, plus the right to make reasonable modifications. 
+2. carry an SPDX header declaring what license applies.
 
-So there.
+or
 
-***************************************************************************
+3. list a full custom license
 
-Definitions:
+This software is originally
 
+ * Copyright (c) 1989 - 1994, Julianne Frances Haugh
 
-A "Package" refers to the collection of files distributed by the
-Copyright Holder, and derivatives of that collection of files created
-through textual modification, or segments thereof. 
-
-"Standard Version" refers to such a Package if it has not been modified,
-or has been modified in accordance with the wishes of the Copyright
-Holder.
-
-"Copyright Holder" is whoever is named in the copyright or copyrights
-for the package.
-
-"You" is you, if you're thinking about copying or distributing this
-Package.
-
-"Reasonable copying fee" is whatever you can justify on the basis of
-media cost, duplication charges, time of people involved, and so on.
-(You will not be required to justify it to the Copyright Holder, but
-only to the computing community at large as a market that must bear the
-fee.)
-
-"Freely Available" means that no fee is charged for the item itself,
-though there may be fees involved in handling the item.  It also means
-that recipients of the item may redistribute it under the same
-conditions they received it.
-
-
-1.  You may make and give away verbatim copies of the source form of the
-Standard Version of this Package without restriction, provided that you
-duplicate all of the original copyright notices and associated
-disclaimers.
-
-2.  You may apply bug fixes, portability fixes and other modifications
-derived from the Public Domain or from the Copyright Holder.  A Package
-modified in such a way shall still be considered the Standard Version.
-
-3.  You may otherwise modify your copy of this Package in any way,
-provided that you insert a prominent notice in each changed file stating
-how and when AND WHY you changed that file, and provided that you do at
-least ONE of the following:
-
-a) place your modifications in the Public Domain or otherwise make them
-Freely Available, such as by posting said modifications to Usenet or an
-equivalent medium, or placing the modifications on a major archive site
-such as uunet.uu.net, or by allowing the Copyright Holder to include
-your modifications in the Standard Version of the Package.
-
-b) use the modified Package only within your corporation or organization.
-
-c) rename any non-standard executables so the names do not conflict with
-standard executables, which must also be provided, and provide separate
-documentation for each non-standard executable that clearly documents
-how it differs from the Standard Version.
-
-d) make other distribution arrangements with the Copyright Holder.
-
-4.  You may distribute the programs of this Package in object code or
-executable form, provided that you do at least ONE of the following:
-
-a) distribute a Standard Version of the executables and library files,
-together with instructions (in the manual page or equivalent) on where
-to get the Standard Version.
-
-b) accompany the distribution with the machine-readable source of the
-Package with your modifications.
-
-c) accompany any non-standard executables with their corresponding
-Standard Version executables, giving the non-standard executables
-non-standard names, and clearly documenting the differences in manual
-pages (or equivalent), together with instructions on where to get the
-Standard Version.
-
-d) make other distribution arrangements with the Copyright Holder.
-
-5.  You may charge a reasonable copying fee for any distribution of this
-Package.  You may charge any fee you choose for support of this Package. 
-YOU MAY NOT CHARGE A FEE FOR THIS PACKAGE ITSELF.  However, you may
-distribute this Package in aggregate with other (possibly commercial)
-programs as part of a larger (possibly commercial) software distribution
-provided that YOU DO NOT ADVERTISE this package as a product of your
-own. 
-
-6.  The name of the Copyright Holder may not be used to endorse or
-promote products derived from this software without specific prior
-written permission.
-
-7.  THIS PACKAGE IS PROVIDED "AS IS" AND WITHOUT ANY EXPRESS OR IMPLIED
-WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF
-MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE.
-
-				The End
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. The name of the copyright holders or contributors may not be used to
+ *    endorse or promote products derived from this software without
+ *    specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
+ * PARTICULAR PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE COPYRIGHT
+ * HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

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@@ -2,7 +2,14 @@
 
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+	$(am__cd) $(top_srcdir) && \
+	  $(AUTOMAKE) --foreign Makefile
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+	    echo ' $(SHELL) ./config.status'; \
+	    $(SHELL) ./config.status;; \
+	  *) \
+	    echo ' cd $(top_builddir) && $(SHELL) ./config.status $@ $(am__maybe_remake_depfiles)'; \
+	    cd $(top_builddir) && $(SHELL) ./config.status $@ $(am__maybe_remake_depfiles);; \
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+	@test -f $@ || $(MAKE) $(AM_MAKEFLAGS) stamp-h1
+
+stamp-h1: $(srcdir)/config.h.in $(top_builddir)/config.status
+	@rm -f stamp-h1
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+$(srcdir)/config.h.in: @MAINTAINER_MODE_TRUE@ $(am__configure_deps) 
+	($(am__cd) $(top_srcdir) && $(AUTOHEADER))
+	rm -f stamp-h1
+	touch $@
+
+distclean-hdr:
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+	cd $(top_builddir) && $(SHELL) ./config.status $@
+shadow.spec: $(top_builddir)/config.status $(srcdir)/shadow.spec.in
+	cd $(top_builddir) && $(SHELL) ./config.status $@
+
+mostlyclean-libtool:
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+clean-libtool:
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+
+distclean-libtool:
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+
+# This directory's subdirectories are mostly independent; you can cd
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+# To change the values of 'make' variables: instead of editing Makefiles,
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+#     (which will cause the Makefiles to be regenerated when you run 'make');
+# (2) otherwise, pass the desired values on the 'make' command line.
+$(am__recursive_targets):
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+	if $(am__make_keepgoing); then \
+	  failcom='fail=yes'; \
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+	  failcom='exit 1'; \
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+	case "$@" in \
+	  distclean-* | maintainer-clean-*) list='$(DIST_SUBDIRS)' ;; \
+	  *) list='$(SUBDIRS)' ;; \
+	esac; \
+	for subdir in $$list; do \
+	  echo "Making $$target in $$subdir"; \
+	  if test "$$subdir" = "."; then \
+	    dot_seen=yes; \
+	    local_target="$$target-am"; \
+	  else \
+	    local_target="$$target"; \
+	  fi; \
+	  ($(am__cd) $$subdir && $(MAKE) $(AM_MAKEFLAGS) $$local_target) \
+	  || eval $$failcom; \
+	done; \
+	if test "$$dot_seen" = "no"; then \
+	  $(MAKE) $(AM_MAKEFLAGS) "$$target-am" || exit 1; \
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+
+ID: $(am__tagged_files)
+	$(am__define_uniq_tagged_files); mkid -fID $$unique
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+	set x; \
+	here=`pwd`; \
+	if ($(ETAGS) --etags-include --version) >/dev/null 2>&1; then \
+	  include_option=--etags-include; \
+	  empty_fix=.; \
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+	  include_option=--include; \
+	  empty_fix=; \
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+	list='$(SUBDIRS)'; for subdir in $$list; do \
+	  if test "$$subdir" = .; then :; else \
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+	      set "$$@" "$$include_option=$$here/$$subdir/TAGS"; \
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+	done; \
+	$(am__define_uniq_tagged_files); \
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+	if test -z "$(ETAGS_ARGS)$$*$$unique"; then :; else \
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+	  if test $$# -gt 0; then \
+	    $(ETAGS) $(ETAGSFLAGS) $(AM_ETAGSFLAGS) $(ETAGS_ARGS) \
+	      "$$@" $$unique; \
+	  else \
+	    $(ETAGS) $(ETAGSFLAGS) $(AM_ETAGSFLAGS) $(ETAGS_ARGS) \
+	      $$unique; \
+	  fi; \
+	fi
+ctags: ctags-recursive
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+	  || $(CTAGS) $(CTAGSFLAGS) $(AM_CTAGSFLAGS) $(CTAGS_ARGS) \
+	     $$unique
+
+GTAGS:
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+	  && $(am__cd) $(top_srcdir) \
+	  && gtags -i $(GTAGS_ARGS) "$$here"
+cscope: cscope.files
+	test ! -s cscope.files \
+	  || $(CSCOPE) -b -q $(AM_CSCOPEFLAGS) $(CSCOPEFLAGS) -i cscope.files $(CSCOPE_ARGS)
+clean-cscope:
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+
+cscopelist-am: $(am__tagged_files)
+	list='$(am__tagged_files)'; \
+	case "$(srcdir)" in \
+	  [\\/]* | ?:[\\/]*) sdir="$(srcdir)" ;; \
+	  *) sdir=$(subdir)/$(srcdir) ;; \
+	esac; \
+	for i in $$list; do \
+	  if test -f "$$i"; then \
+	    echo "$(subdir)/$$i"; \
+	  else \
+	    echo "$$sdir/$$i"; \
+	  fi; \
+	done >> $(top_builddir)/cscope.files
+
+distclean-tags:
+	-rm -f TAGS ID GTAGS GRTAGS GSYMS GPATH tags
+	-rm -f cscope.out cscope.in.out cscope.po.out cscope.files
+distdir: $(BUILT_SOURCES)
+	$(MAKE) $(AM_MAKEFLAGS) distdir-am
+
+distdir-am: $(DISTFILES)
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+	test -d "$(distdir)" || mkdir "$(distdir)"
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+	topsrcdirstrip=`echo "$(top_srcdir)" | sed 's/[].[^$$\\*]/\\\\&/g'`; \
+	list='$(DISTFILES)'; \
+	  dist_files=`for file in $$list; do echo $$file; done | \
+	  sed -e "s|^$$srcdirstrip/||;t" \
+	      -e "s|^$$topsrcdirstrip/|$(top_builddir)/|;t"`; \
+	case $$dist_files in \
+	  */*) $(MKDIR_P) `echo "$$dist_files" | \
+			   sed '/\//!d;s|^|$(distdir)/|;s,/[^/]*$$,,' | \
+			   sort -u` ;; \
+	esac; \
+	for file in $$dist_files; do \
+	  if test -f $$file || test -d $$file; then d=.; else d=$(srcdir); fi; \
+	  if test -d $$d/$$file; then \
+	    dir=`echo "/$$file" | sed -e 's,/[^/]*$$,,'`; \
+	    if test -d "$(distdir)/$$file"; then \
+	      find "$(distdir)/$$file" -type d ! -perm -700 -exec chmod u+rwx {} \;; \
+	    fi; \
+	    if test -d $(srcdir)/$$file && test $$d != $(srcdir); then \
+	      cp -fpR $(srcdir)/$$file "$(distdir)$$dir" || exit 1; \
+	      find "$(distdir)/$$file" -type d ! -perm -700 -exec chmod u+rwx {} \;; \
+	    fi; \
+	    cp -fpR $$d/$$file "$(distdir)$$dir" || exit 1; \
+	  else \
+	    test -f "$(distdir)/$$file" \
+	    || cp -p $$d/$$file "$(distdir)/$$file" \
+	    || exit 1; \
+	  fi; \
+	done
+	@list='$(DIST_SUBDIRS)'; for subdir in $$list; do \
+	  if test "$$subdir" = .; then :; else \
+	    $(am__make_dryrun) \
+	      || test -d "$(distdir)/$$subdir" \
+	      || $(MKDIR_P) "$(distdir)/$$subdir" \
+	      || exit 1; \
+	    dir1=$$subdir; dir2="$(distdir)/$$subdir"; \
+	    $(am__relativize); \
+	    new_distdir=$$reldir; \
+	    dir1=$$subdir; dir2="$(top_distdir)"; \
+	    $(am__relativize); \
+	    new_top_distdir=$$reldir; \
+	    echo " (cd $$subdir && $(MAKE) $(AM_MAKEFLAGS) top_distdir="$$new_top_distdir" distdir="$$new_distdir" \\"; \
+	    echo "     am__remove_distdir=: am__skip_length_check=: am__skip_mode_fix=: distdir)"; \
+	    ($(am__cd) $$subdir && \
+	      $(MAKE) $(AM_MAKEFLAGS) \
+	        top_distdir="$$new_top_distdir" \
+	        distdir="$$new_distdir" \
+		am__remove_distdir=: \
+		am__skip_length_check=: \
+		am__skip_mode_fix=: \
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+	      || exit 1; \
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+	done
+	-test -n "$(am__skip_mode_fix)" \
+	|| find "$(distdir)" -type d ! -perm -755 \
+		-exec chmod u+rwx,go+rx {} \; -o \
+	  ! -type d ! -perm -444 -links 1 -exec chmod a+r {} \; -o \
+	  ! -type d ! -perm -400 -exec chmod a+r {} \; -o \
+	  ! -type d ! -perm -444 -exec $(install_sh) -c -m a+r {} {} \; \
+	|| chmod -R a+r "$(distdir)"
+dist-gzip: distdir
+	tardir=$(distdir) && $(am__tar) | eval GZIP= gzip $(GZIP_ENV) -c >$(distdir).tar.gz
+	$(am__post_remove_distdir)
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+dist-bzip2: distdir
+	tardir=$(distdir) && $(am__tar) | BZIP2=$${BZIP2--9} bzip2 -c >$(distdir).tar.bz2
+	$(am__post_remove_distdir)
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+dist-lzip: distdir
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+	$(am__post_remove_distdir)
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+	tardir=$(distdir) && $(am__tar) | XZ_OPT=$${XZ_OPT--e} xz -c >$(distdir).tar.xz
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+dist-zstd: distdir
+	tardir=$(distdir) && $(am__tar) | zstd -c $${ZSTD_CLEVEL-$${ZSTD_OPT--19}} >$(distdir).tar.zst
+	$(am__post_remove_distdir)
+
+dist-tarZ: distdir
+	@echo WARNING: "Support for distribution archives compressed with" \
+		       "legacy program 'compress' is deprecated." >&2
+	@echo WARNING: "It will be removed altogether in Automake 2.0" >&2
+	tardir=$(distdir) && $(am__tar) | compress -c >$(distdir).tar.Z
+	$(am__post_remove_distdir)
+
+dist-shar: distdir
+	@echo WARNING: "Support for shar distribution archives is" \
+	               "deprecated." >&2
+	@echo WARNING: "It will be removed altogether in Automake 2.0" >&2
+	shar $(distdir) | eval GZIP= gzip $(GZIP_ENV) -c >$(distdir).shar.gz
+	$(am__post_remove_distdir)
+
+dist-zip: distdir
+	-rm -f $(distdir).zip
+	zip -rq $(distdir).zip $(distdir)
+	$(am__post_remove_distdir)
+
+dist dist-all:
+	$(MAKE) $(AM_MAKEFLAGS) $(DIST_TARGETS) am__post_remove_distdir='@:'
+	$(am__post_remove_distdir)
+
+# This target untars the dist file and tries a VPATH configuration.  Then
+# it guarantees that the distribution is self-contained by making another
+# tarfile.
+distcheck: dist
+	case '$(DIST_ARCHIVES)' in \
+	*.tar.gz*) \
+	  eval GZIP= gzip $(GZIP_ENV) -dc $(distdir).tar.gz | $(am__untar) ;;\
+	*.tar.bz2*) \
+	  bzip2 -dc $(distdir).tar.bz2 | $(am__untar) ;;\
+	*.tar.lz*) \
+	  lzip -dc $(distdir).tar.lz | $(am__untar) ;;\
+	*.tar.xz*) \
+	  xz -dc $(distdir).tar.xz | $(am__untar) ;;\
+	*.tar.Z*) \
+	  uncompress -c $(distdir).tar.Z | $(am__untar) ;;\
+	*.shar.gz*) \
+	  eval GZIP= gzip $(GZIP_ENV) -dc $(distdir).shar.gz | unshar ;;\
+	*.zip*) \
+	  unzip $(distdir).zip ;;\
+	*.tar.zst*) \
+	  zstd -dc $(distdir).tar.zst | $(am__untar) ;;\
+	esac
+	chmod -R a-w $(distdir)
+	chmod u+w $(distdir)
+	mkdir $(distdir)/_build $(distdir)/_build/sub $(distdir)/_inst
+	chmod a-w $(distdir)
+	test -d $(distdir)/_build || exit 0; \
+	dc_install_base=`$(am__cd) $(distdir)/_inst && pwd | sed -e 's,^[^:\\/]:[\\/],/,'` \
+	  && dc_destdir="$${TMPDIR-/tmp}/am-dc-$$$$/" \
+	  && am__cwd=`pwd` \
+	  && $(am__cd) $(distdir)/_build/sub \
+	  && ../../configure \
+	    $(AM_DISTCHECK_CONFIGURE_FLAGS) \
+	    $(DISTCHECK_CONFIGURE_FLAGS) \
+	    --srcdir=../.. --prefix="$$dc_install_base" \
+	  && $(MAKE) $(AM_MAKEFLAGS) \
+	  && $(MAKE) $(AM_MAKEFLAGS) $(AM_DISTCHECK_DVI_TARGET) \
+	  && $(MAKE) $(AM_MAKEFLAGS) check \
+	  && $(MAKE) $(AM_MAKEFLAGS) install \
+	  && $(MAKE) $(AM_MAKEFLAGS) installcheck \
+	  && $(MAKE) $(AM_MAKEFLAGS) uninstall \
+	  && $(MAKE) $(AM_MAKEFLAGS) distuninstallcheck_dir="$$dc_install_base" \
+	        distuninstallcheck \
+	  && chmod -R a-w "$$dc_install_base" \
+	  && ({ \
+	       (cd ../.. && umask 077 && mkdir "$$dc_destdir") \
+	       && $(MAKE) $(AM_MAKEFLAGS) DESTDIR="$$dc_destdir" install \
+	       && $(MAKE) $(AM_MAKEFLAGS) DESTDIR="$$dc_destdir" uninstall \
+	       && $(MAKE) $(AM_MAKEFLAGS) DESTDIR="$$dc_destdir" \
+	            distuninstallcheck_dir="$$dc_destdir" distuninstallcheck; \
+	      } || { rm -rf "$$dc_destdir"; exit 1; }) \
+	  && rm -rf "$$dc_destdir" \
+	  && $(MAKE) $(AM_MAKEFLAGS) dist \
+	  && rm -rf $(DIST_ARCHIVES) \
+	  && $(MAKE) $(AM_MAKEFLAGS) distcleancheck \
+	  && cd "$$am__cwd" \
+	  || exit 1
+	$(am__post_remove_distdir)
+	@(echo "$(distdir) archives ready for distribution: "; \
+	  list='$(DIST_ARCHIVES)'; for i in $$list; do echo $$i; done) | \
+	  sed -e 1h -e 1s/./=/g -e 1p -e 1x -e '$$p' -e '$$x'
+distuninstallcheck:
+	@test -n '$(distuninstallcheck_dir)' || { \
+	  echo 'ERROR: trying to run $@ with an empty' \
+	       '$$(distuninstallcheck_dir)' >&2; \
+	  exit 1; \
+	}; \
+	$(am__cd) '$(distuninstallcheck_dir)' || { \
+	  echo 'ERROR: cannot chdir into $(distuninstallcheck_dir)' >&2; \
+	  exit 1; \
+	}; \
+	test `$(am__distuninstallcheck_listfiles) | wc -l` -eq 0 \
+	   || { echo "ERROR: files left after uninstall:" ; \
+	        if test -n "$(DESTDIR)"; then \
+	          echo "  (check DESTDIR support)"; \
+	        fi ; \
+	        $(distuninstallcheck_listfiles) ; \
+	        exit 1; } >&2
+distcleancheck: distclean
+	@if test '$(srcdir)' = . ; then \
+	  echo "ERROR: distcleancheck can only run from a VPATH build" ; \
+	  exit 1 ; \
+	fi
+	@test `$(distcleancheck_listfiles) | wc -l` -eq 0 \
+	  || { echo "ERROR: files left in build directory after distclean:" ; \
+	       $(distcleancheck_listfiles) ; \
+	       exit 1; } >&2
+check-am: all-am
+check: check-recursive
+all-am: Makefile config.h
+installdirs: installdirs-recursive
+installdirs-am:
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+install-exec: install-exec-recursive
+install-data: install-data-recursive
+uninstall: uninstall-recursive
+
+install-am: all-am
+	@$(MAKE) $(AM_MAKEFLAGS) install-exec-am install-data-am
+
+installcheck: installcheck-recursive
+install-strip:
+	if test -z '$(STRIP)'; then \
+	  $(MAKE) $(AM_MAKEFLAGS) INSTALL_PROGRAM="$(INSTALL_STRIP_PROGRAM)" \
+	    install_sh_PROGRAM="$(INSTALL_STRIP_PROGRAM)" INSTALL_STRIP_FLAG=-s \
+	      install; \
+	else \
+	  $(MAKE) $(AM_MAKEFLAGS) INSTALL_PROGRAM="$(INSTALL_STRIP_PROGRAM)" \
+	    install_sh_PROGRAM="$(INSTALL_STRIP_PROGRAM)" INSTALL_STRIP_FLAG=-s \
+	    "INSTALL_PROGRAM_ENV=STRIPPROG='$(STRIP)'" install; \
+	fi
+mostlyclean-generic:
+
+clean-generic:
+
+distclean-generic:
+	-test -z "$(CONFIG_CLEAN_FILES)" || rm -f $(CONFIG_CLEAN_FILES)
+	-test . = "$(srcdir)" || test -z "$(CONFIG_CLEAN_VPATH_FILES)" || rm -f $(CONFIG_CLEAN_VPATH_FILES)
+
+maintainer-clean-generic:
+	@echo "This command is intended for maintainers to use"
+	@echo "it deletes files that may require special tools to rebuild."
+clean: clean-recursive
+
+clean-am: clean-generic clean-libtool mostlyclean-am
+
+distclean: distclean-recursive
+	-rm -f $(am__CONFIG_DISTCLEAN_FILES)
+	-rm -f Makefile
+distclean-am: clean-am distclean-generic distclean-hdr \
+	distclean-libtool distclean-tags
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+dvi: dvi-recursive
+
+dvi-am:
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+html: html-recursive
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+html-am:
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+info: info-recursive
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+info-am:
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+install-data-am:
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+install-html: install-html-recursive
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+install-html-am:
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+install-info: install-info-recursive
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+install-man:
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+install-pdf: install-pdf-recursive
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+install-pdf-am:
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+install-ps: install-ps-recursive
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+install-ps-am:
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+installcheck-am:
+
+maintainer-clean: maintainer-clean-recursive
+	-rm -f $(am__CONFIG_DISTCLEAN_FILES)
+	-rm -rf $(top_srcdir)/autom4te.cache
+	-rm -f Makefile
+maintainer-clean-am: distclean-am maintainer-clean-generic
+
+mostlyclean: mostlyclean-recursive
+
+mostlyclean-am: mostlyclean-generic mostlyclean-libtool
+
+pdf: pdf-recursive
+
+pdf-am:
+
+ps: ps-recursive
+
+ps-am:
+
+uninstall-am:
+
+.MAKE: $(am__recursive_targets) all install-am install-strip
+
+.PHONY: $(am__recursive_targets) CTAGS GTAGS TAGS all all-am \
+	am--refresh check check-am clean clean-cscope clean-generic \
+	clean-libtool cscope cscopelist-am ctags ctags-am dist \
+	dist-all dist-bzip2 dist-gzip dist-lzip dist-shar dist-tarZ \
+	dist-xz dist-zip dist-zstd distcheck distclean \
+	distclean-generic distclean-hdr distclean-libtool \
+	distclean-tags distcleancheck distdir distuninstallcheck dvi \
+	dvi-am html html-am info info-am install install-am \
+	install-data install-data-am install-dvi install-dvi-am \
+	install-exec install-exec-am install-html install-html-am \
+	install-info install-info-am install-man install-pdf \
+	install-pdf-am install-ps install-ps-am install-strip \
+	installcheck installcheck-am installdirs installdirs-am \
+	maintainer-clean maintainer-clean-generic mostlyclean \
+	mostlyclean-generic mostlyclean-libtool pdf pdf-am ps ps-am \
+	tags tags-am uninstall uninstall-am
+
+.PRECIOUS: Makefile
+
+
+# Tell versions [3.59,3.63) of GNU make to not export all variables.
+# Otherwise a system limit (for SysV at least) may be exceeded.
+.NOEXPORT:

NEWS

@@ -1,5 +1,450 @@
 $Id$
 
+shadow-4.1.5.1 -> shadow-4.2					UNRELEASED
+
+*** general
+  * Handle libc whose crypt() returns NULL when passed a salt that
+    violates specs or system requirements (e.g. FIPS140). This is needed
+    with glibc/eglibc 2.17 for tools checking passwords (passwd (non PAM
+    enabled) or newgrp), and for tools generating encrypted passwords
+    (chgpasswd, chpasswd, or gpasswd when non PAM enabled or when a fixed
+    crypt method is requested on the command line, and newusers, or passwd
+    in their non PAM enabled versions)
+  * Fix segfault when reading groups split on multiple lines. This impacts
+    most user/group management tools when MAX_MEMBERS_PER_GROUP is set.
+
+- su
+  * When su receives a signal (SIGTERM, or SIGINT/SIGQUIT in non
+    interactive mode), kill the child process group, rather than just the
+    immediate child.
+  * Fix segmentation faults for users without a proper home or shell in
+    their passwd entries.
+
+- login
+  * Fix segmentation faults for users without a proper home or shell in
+    their passwd entries.
+
+*** documentation
+  * Fixed useradd man page (--home-dir option, instead of --home).
+
+*** translation
+  * Updated Russian translation.
+  * Updated German man pages translation.
+  * Fixed gshadow Japanese man page translation.
+
+shadow-4.1.5 -> shadow-4.1.5.1					2012-05-25
+
+- login
+  * Log into utmp(x) when PAM is enabled, but do not log into wtmp.
+    This complete pam_lastlog which logs into wtmp and in into utmp(x).
+- su
+  * non PAM enabled versions: do not fail if su is called without a
+    controlling terminal.
+- userdel
+  * Fix segfault when userdel removes the user's group.
+
+*** documentation
+  * .so links now point to paths relative to the top-level manual hierarchy
+
+*** translation
+  * Updated French man pages translation.
+  * Updated German man pages translation.
+  * Updated Polish man pages translation. (logoutd.8)
+
+shadow-4.1.4.3 -> shadow-4.1.5					2012-02-12
+
+*** security
+  * su -c could be abused by the executed command to invoke commands with
+    the caller privileges. See below. (CVE-2005-4890)
+
+*** general
+  * report usage error to stderr, but report usage help to stdout (and return
+    zero) when explicitly requested (e.g. with --help).
+  * initial support for tcb (http://openwall.com/tcb/) for useradd,
+    userdel, usermod, chage, pwck, vipw.
+  * Added support for ACLs and Extended Attributes in useradd and usermod.
+    Support shall be enabled with the new --with-acl or --with-attr
+    configure options.
+  * Added diagnosis for lock failures.
+  * use libsemanage instead of the semanage tool.
+
+- chage
+  * Add --root option.
+- chfn
+  * Add --root option.
+- chgpasswd
+  * When the gshadow file exists but there are no gshadow entries, an entry
+    is created if the password is changed and group requires a
+    shadow entry.
+  * Add --root option.
+- chpasswd
+  * PAM enabled versions: restore the -e option to allow restoring
+    passwords without knowing those passwords. Restore together the -m
+    and -c options. (These options were removed in shadow-4.1.4 on PAM
+    enabled versions)
+  * When the shadow file exists but there are no shadow entries, an entry
+    is created if the password is changed and passwd requires a
+    shadow entry.
+  * Add --root option.
+- chsh
+  * Add --root option.
+- faillog
+  * The -l, -m, -r, -t options only act on the existing users, unless -a is
+    specified.
+  * Add --root option.
+- gpasswd
+  * Add --root option.
+- groupadd
+  * Add --root option.
+- groupdel
+  * Add --root option.
+- groupmems
+  * Fix parsing of gshadow entries.
+  * Add --root option.
+- groupmod
+  * Fixed groupmod when configured with --enable-account-tools-setuid.
+  * When the gshadow file exists but there are no gshadow entries, an entry
+    is created if the password is changed and group requires a
+    shadow entry.
+  * Add --root option.
+- grpck
+  * Add --root option.
+  * NIS entries were dropped by -s (sort).
+- grpconv
+  * Add --root option.
+- grpunconv
+  * Add --root option.
+- lastlog
+  * Add --root option.
+- login
+  * Fixed limits support (non PAM enabled versions only)
+  * Added support for infinite limits and group based limits (non PAM
+    enabled versions only)
+  * Fixed infinite loop when CONSOLE is configured with a colon-separated
+    list of TTYs.
+  * Fixed warning and support for CONSOLE_GROUPS for users member of more
+    than 16 groups.
+  * Do not log into utmp(x) or wtmp when PAM is enabled. This is done by
+    pam_lastlog.
+- newgrp, sg
+  * Fix parsing of gshadow entries.
+- newusers
+  * Add --root option.
+- passwd
+  * Add --root option.
+- pwpck
+  * NIS entries were dropped by -s (sort).
+  * Add --root option.
+- pwconv
+  * Add --root option.
+- pwunconv
+  * Add --root option.
+- useradd
+  * If the skeleton directory contained hardlinked files, copies of the
+    hardlink were removed from the skeleton directory.
+  * Add --root option.
+- userdel
+  * Check the existence of the user's mail spool before trying to remove
+    it. If it does not exist, a warning is issued, but no failure.
+  * Do not remove a group with the same name as the user (usergroup) if
+    this group isn't the user's primary group.
+  * Add --root option.
+  * Add --selinux-user option.
+- usermod
+  * Accept options in any order (username not necessarily at the end)
+  * When the shadow file exists but there are no shadow entries, an entry
+    is created if the password is changed and passwd requires a
+    shadow entry, or if aging features are used (-e or -f).
+  * Add --root option.
+- su
+  * Document the su exit values.
+  * When su receives a signal, wait for the child to terminate (after
+    sending a SIGTERM), and kill it only if it did not terminate by itself.
+    No delay will be enforced if the child cooperates.
+  * Default ENV_SUPATH is /sbin:/bin:/usr/sbin:/usr/bin
+  * Fixed infinite loop when CONSOLE is configured with a colon-separated
+    list of TTYs.
+  * Fixed warning and support for CONSOLE_GROUPS for users member of more
+    than 16 groups.
+  * Do not forward the controlling terminal to commands executed with -c.
+    This prevents tty hijacking which could lead to execution with the
+    caller's privileges.
+  * Close PAM sessions as root. This will be more friendly to PAM modules
+    like pam_mount or pam_systemd.
+  * Added support for PAM modules which change PAM_USER.
+
+*** translation
+  * Updated Brazilian Portuguese translation.
+  * Updated Catalan translation.
+  * Updated Czech translation.
+  * Updated Danish translation.
+  * New Danish man pages translation.
+  * Updated French translation.
+  * Updated French man pages translation.
+  * Updated German translation.
+  * Updated German man pages translation.
+  * Updated Greek translation.
+  * Updated Italian man pages translation.
+  * Updated Japanese translation.
+  * Updated Kazakh translation.
+  * Updated Norwegian Bokmål translation.
+  * Updated Portuguese translation.
+  * Updated Russian translation.
+  * Updated Simplified Chinese translation.
+  * Updated Simplified Chinese man pages translation.
+  * Updated Swedish translation.
+  * Updated Vietnamese translation.
+
+shadow-4.1.4.2 -> shadow-4.1.4.3						2011-02-15
+
+*** security
+- CVE-2011-0721: An insufficient input sanitation in chfn can be exploited
+  to create users or groups in a NIS environment.
+
+shadow-4.1.4.1 -> shadow-4.1.4.2					2009-07-24
+
+- general
+  * Improved support for large groups (impacts most user/group management
+    tools).
+
+- addition of system users or groups
+  * Speed improvement. This should be noticeable in case of LDAP configured
+    systems. This should impact useradd, groupadd, and newusers
+  * Since system accounts are allocated from SYS_?ID_MIN to SYS_?ID_MAX in
+    reverse order, accounts are packed close to SYS_?ID_MAX if SYS_?ID_MIN
+    is already used but there are still dome gaps.
+
+- login
+  * Add support for shells being a shell script without a shebang.
+- su
+  * Preserve the DISPLAY and XAUTHORITY environment variables. This was
+    only the case in the non PAM enabled versions.
+  * Add support for shells being a shell script without a shebang.
+
+*** translation
+  * The Finnish translation of passwd(1) was outdated and is no more
+    distributed.
+
+shadow-4.1.4 -> shadow-4.1.4.1						2009-05-22
+
+- login
+  * Fix failures with empty usernames on non PAM versions.
+  * Fix CONSOLE (securetty) support on non PAM versions.
+- newgrp
+  * Return the exit status of the child.
+- userdel
+  * On Linux, do not check if an user is logged in with utmp, but check if
+    the user is running some processes.
+  * If not on Linux, continue to search for an utmp record, but make sure
+    the process recorded in the utmp entry is still running.
+  * Report failures to remove the user's mailbox
+  * When USERGROUPS_ENAB is enabled, remove the user's group when the
+    user was the only member.
+  * Do not fail when -r is used and the home directory does not exist.
+- usermod
+  * Check if the user is busy when the user's UID, name or home directory
+    is changed.
+
+shadow-4.1.3.1 -> shadow-4.1.4						2009-05-10
+
+- packaging
+  * Enable --enable-account-tools-setuid by default for PAM builds.
+  * Add configure option --enable-utmpx, disabled by default to mimic
+    the previous behavior on Linux (where utmp and utmpx are identical).
+  * Fix build failure on non-PAM systems when --without-pam is not
+    specified.
+
+- chpasswd
+  * Change the passwords using PAM. This permits to define the password
+    policy in a central place. The -c/--crypt-method, -e/--encrypted,
+    -m/--md5 and -s/--sha-rounds options are no more supported on PAM
+    enabled systems.
+- grpck
+  * Warn if a group has an entry in group and gshadow, and the password
+    field in group is not 'x'.
+- login
+  * Do not trust the current utmp entry's ut_line to set PAM_TTY. This could
+    lead to DOS attacks.
+  * (PAM) Even if the user was already authenticated (-f flag), ask the
+    user to update his authentication token if needed.
+- lastlog
+  * Fix regression causing empty reports.
+- newusers
+  * Change the passwords using PAM. This permits to define the password
+    policy in a central place. The -c/--crypt-method and -s/--sha-rounds
+    options are no more supported on PAM enabled systems.
+- pwck
+  * Warn if an user has an entry in passwd and shadow, and the password
+    field in passwd is not 'x'.
+
+*** translation
+ - Updated Czech translation
+ - Updated French translation
+ - Updated German translation
+ - Updated Japanese translation
+ - Updated Korean translation
+ - Updated Portuguese translation
+ - Updated Russian translation
+
+shadow-4.1.3 -> shadow-4.1.3.1						2009-04-15
+
+*** security:
+- Due to bad parsing of octal permissions, the permissions on tty (login)
+  but also UMASK were set wrongly (and weirdly). Only shadow-4.1.3 was
+  affected.
+
+*** general
+- login
+  * Fix regression when no user is specified on the command line.
+- userdel
+  * Fixed SE Linux support
+- vipw
+  * SE Linux: Set the default context to the context of the file being
+    edited. This ensures that the backup file inherit from the file's
+    context.
+
+*** translation
+ - Updated Norwegian Bokmål translation
+
+shadow-4.1.2.2 -> shadow-4.1.3						2009-04-12
+
+*** general:
+- packaging
+  * Fixed support for OpenPAM.
+  * Fixed support for uclibc.
+  * Added configure --enable-account-tools-setuid (default) /
+    --disable-account-tools-setuid options. This permits to disable the
+    PAM authentication of the caller for chage, chgpasswd, chpasswd,
+    groupadd, groupdel, groupmod, newusers, useradd, userdel, and usermod.
+    This authentication is not necessary when these tools are not
+    installed setuid root.
+  * Added configure --with-group-name-max-length (default) /
+    --without-group-name-max-length options. This permits to configure the maximum length allowed for group names:
+      <no option> -> default of 16 (like today)
+      --with-group-name-max-length -> default of 16
+      --without-group-name-max-length -> no max length
+      --with-group-name-max-length=n > max is set to n
+    No sanity checking is performed on n so people could do
+    something neat like --with-group-name-max-length=MAX_INT
+- addition of users or groups
+  * Speed improvement in case UID_MAX/SYS_UID_MAX/GID_MAX/SYS_GID_MAX is
+    used for an user/group. This should be noticeable in case of LDAP
+    configured systems. This should impact useradd, groupadd, and newusers
+- error handling improvement
+  * Make sure errors and incomplete changes are reported to syslog and
+    audit in case of unexpected failures.
+  * Report system inconsistencies to syslog and audit.
+  * Only report success to syslog and audit if the changes are really
+    performed in the system databases.
+    This is still not complete.
+- /etc/login.defs
+  * New CREATE_HOME variable to tell useradd to create a home directory by
+    default.
+- Translations
+  * New Kazakh translation.
+  * Spanish manpages are no more distributed. They are outdated. Please
+    contact pkg-shadow-devel@lists.alioth.debian.org if you wish to
+    provide updates.
+
+- faillog
+  * Accept users specified as a numerical UID, or ranges of users (-user,
+    user-, user1-user2).
+  * -l, -m, and -r now apply not only to existing users, but to all the
+    specified UIDs.
+  * Options can be specified in any order.
+- gpasswd
+  * Added support for long options --add (-a), --delete (-d),
+    --remove-password (-r), --restrict (-R), --administrators (-A), and
+    --members (-M).
+  * Added support for usernames with arbitrary length.
+  * audit logging improvements.
+  * error handling improvement (see above).
+  * Log permission denied to syslog and audit.
+- groupadd
+  * audit logging improvements.
+  * error handling improvement (see above).
+  * Speedup (see "addition of users or groups" above).
+  * do not create groups with GID set to (gid_t)-1.
+  * Allocate system group GIDs in reverse order. This could be useful
+    later to increase the static IDs range.
+- groupdel
+  * audit logging improvements.
+  * error handling improvement (see above).
+- groupmems
+  * Check if user exist before they are added to groups.
+  * Avoid segfault in case the specified group does not exist in /etc/group.
+  * Everybody is allowed to list the users of a group.
+  * /etc/group is open readonly when one just wants to list the users of a
+    group.
+  * Added syslog support.
+  * Use the groupmems PAM service name instead of groupmod.
+  * Fix segmentation faults when adding or removing users from a group.
+  * Added support for shadow groups.
+  * Added support long options --add (-a), --delete (-d), --purge (-p),
+    --list (-l), --group (-g).
+- groupmod
+  * audit logging improvements.
+  * error handling improvement (see above).
+  * do not create groups with GID set to (gid_t)-1.
+- grpck
+  * warn for groups with GID set to (gid_t)-1.
+- login
+  * Restore the echoctl, echoke, onclr flags to the terminal termio flags.
+    Reset echoprt, noflsh, tostop. This behavior seems to have change by
+    mistake in earlier releases (4.0.8, for no obvious reason).
+- newusers
+  * Implement the -r, --system option.
+  * Speedup (see "addition of users or groups" above).
+  * do not create users with UID set to (gid_t)-1.
+  * do not create groups with GID set to (gid_t)-1.
+  * Allocate system account UIDs/GIDs in reverse order. This could be useful
+    later to increase the static IDs range.
+- passwd
+  * For compatibility with other passwd version, the --lock an --unlock
+    options do not lock or unlock the user account anymore.  They only
+    lock or unlock the user's password.
+- pwck
+  * warn for users with UID set to (uid_t)-1.
+- su
+  * Preserve COLORTERM in addition to TERM when su is called with the -l
+    option.
+- useradd
+  * audit logging improvements.
+  * Speedup (see "addition of users or groups" above).
+  * See CREATE_HOME above.
+  * New -M/--no-create-home option to disable CREATE_HOME.
+  * do not create users with UID set to (gid_t)-1.
+  * Added -Z option to map SELinux user for user's login.
+  * Allocate system user UIDs in reverse order. This could be useful
+    later to increase the static IDs range.
+- userdel
+  * audit logging improvements.
+  * Do not fail if the removed user is not in the shadow database.
+  * When the user's group shall be removed, do not fail if this group is
+    not in the gshadow file.
+  * Delete the SELinux user mapping for user's login.
+- usermod
+  * Allow adding LDAP users (or any user not present in the local passwd
+    file) to local groups
+  * do not create users with UID set to (gid_t)-1.
+  * Added -Z option to map SELinux user for user's login.
+
+shadow-4.1.2.1 -> shadow-4.1.2.2					23-11-2008
+
+*** security
+- Fix a race condition in login that could lead to gaining ownership or
+  changing mode of arbitrary files.
+- Fix a possible login DOS, which could be caused by injecting forged
+  entries in utmp.
+
+shadow-4.1.2 -> shadow-4.1.2.1						26-06-2008
+
+*** security
+- Fix an "audit log injection" vulnerability in login.
+  This vulnerability makes it easier for attackers to hide activities by
+  modifying portions of log events, e.g. by appending an addr= statement
+  to the login name.
+
 shadow-4.1.1 -> shadow-4.1.2						25-05-2008
 
 *** security:
@@ -66,7 +511,7 @@ shadow-4.1.0 -> shadow-4.1.1						02-04-2008
     faillog faster.
 - gpasswd
   * Fix failures when the gshadow file is not present.
-  * When a password is moved to the gshadow file, use "x" instead of "x"
+  * When a password is moved to the gshadow file, use "x" instead of "!"
     to indicate that the password is shadowed (consistency with grpconv).
   * Make sure the group and gshadow files are unlocked on exit.
 - groupadd
@@ -177,7 +622,7 @@ shadow-4.0.18.2 -> shadow-4.1.0						09-12-2007
 - Add support for uClibc with no l64a().
 - userdel, usermod: Fix infinite loop caused by erroneous group file
   containing two entries with the same name. (The fix strategy differs
-  from 
+  from
   (https://bugzilla.redhat.com/show_bug.cgi?id=240915)
 - userdel: Abort if an error is detected while updating the passwd or group
   databases. The passwd or group files will not be written.
@@ -209,9 +654,9 @@ shadow-4.0.18.2 -> shadow-4.1.0						09-12-2007
 - Use MD5_CRYPT_ENAB, ENCRYPT_METHOD, SHA_CRYPT_MIN_ROUNDS, and
   SHA_CRYPT_MAX_ROUNDS to define the default encryption algorithm for the
   passwords.
-- chpaswd, chgpasswd, newusers: New options -c/--crypt-method and
+- chpasswd, chgpasswd, newusers: New options -c/--crypt-method and
   -s/--sha-rounds to supersede the system default encryption algorithm.
-- chpaswd, chgpasswd, newusers: DES is no more the default algorithm. They
+- chpasswd, chgpasswd, newusers: DES is no more the default algorithm. They
   will respect the system default configured in /etc/login.defs
 
 *** documentation:
@@ -256,14 +701,14 @@ shadow-4.0.17 -> shadow-4.0.18						01-08-2006
 - groupadd, groupmod, useradd, usermod: fixed UID/GID overflow (fixed
   http://bugzilla.redhat.com/bugzilla/show_bug.cgi?id=198920)
 - passwd, useradd, usermod: fixed inactive/mindays/warndays/maxdays overflow
-  (simillar to RH#198920),
-- groupmems: rewrited for use PAM and getopt_long() and now it is enabled
+  (similar to RH#198920),
+- groupmems: rewritten for use PAM and getopt_long() and now it is enabled
   for build and install (patch by George Kraft <gk4@swbell.net>),
 - S/Key: removed assign getpass() to libshadow_getpass() on autoconf level
   (patch by Ulrich Mueller <ulm@kph.uni-mainz.de>; http://bugs.gentoo.org/139966),
 - usermod: back to previous -a option semantics and clarify -a behavior
   on documentation level (by Greg Schafer <gschafer@zip.com.au>),
-- chsh, groupmod: rewrited for use getopt_long().
+- chsh, groupmod: rewritten for use getopt_long().
 - updated translations: ca, cs, da, eu, fr, gl, hu, ko, pl, pt, ru, sv, tr, uk, vi.
 *** documentation:
 - fr and ru man pages are up to date,
@@ -298,7 +743,7 @@ shadow-4.0.15 -> shadow-4.0.16						05-06-2006
 
 *** general:
 - userdel: better fix for old CERT VU#312962 (which was fixed in shadow 4.0.8):
-  fixed forgoten checking of the return value from fchown() before
+  fixed forgotten checking of the return value from fchown() before
   proceeding with the fchmod() (based on Owl patch prepared by
   Rafal Wojtczuk <nergal@owl.openwall.com>),
 - userdel: use login.defs::MAIL_DIR instead hardcoded /var/mail in created
@@ -310,7 +755,7 @@ shadow-4.0.15 -> shadow-4.0.16						05-06-2006
   passwords and libshadow_getpass() is used only because libc getpass()
   do not handles password prompting with echo enabled,
 - move login.defs::MD5_CRYPT_ENAB to non-PAM part,
-- userdel: rewrited for use getopt_log(),
+- userdel: rewritten for use getopt_log(),
 - install default/template configuration files:
 -- if shadow is configured with use PAM install /etc/pam.d/* files,
 -- if shadow do not uses PAM install /etc/{limits,login.acces} files,
@@ -348,7 +793,7 @@ shadow-4.0.15 -> shadow-4.0.16						05-06-2006
 - updated ru login.defs(5), passwd(1), userdel(8), usermod(8) man pages,
 - pw_auth(3) man page removed (outdated),
 - install limits(5), login.access(5) and porttime(5) man pages only when
-  shadow is builded with PAM support disabled,
+  shadow is built with PAM support disabled,
 - passwd(1): better document how password strength is checked
   (fixed http://bugs.debian.org/115380),
 - usermod(8): added missing -a option description
@@ -371,7 +816,7 @@ shadow-4.0.14 -> shadow-4.0.15						13-03-2006
 - login: default UMASK if not specified in login.defs is 022 (pointed by
   Peter Vrabec <pvrabec@redhat.com>),
 - chgpasswd: new tool (by Jonas Meurer <mejo@debian.org>),
-- lastlog: print the usage and exit if an additional argument is profided to
+- lastlog: print the usage and exit if an additional argument is provided to
   lastlog (merge 488_laslog_verify_arguments Debian patch),
 - login, newgrp, nologin, su: do not link with libselinux (merge
   490_link_selinux_only_when_needed Debian patch),
@@ -385,9 +830,9 @@ shadow-4.0.14 -> shadow-4.0.15						13-03-2006
     tries exceeded,
   - always prints the number of tries in the syslog entry.
   - add special handling for PAM_ABORT
-  - add an entry to failog, as when USE_PAM is not defined. (#53164)
+  - add an entry to faillog, as when USE_PAM is not defined. (#53164)
   - changed pam_end to PAM_END. This is certainly was a mistake.  PAM_END is
-    pam_close_seesion + pam_end. Here, the session is still not open, we
+    pam_close_session + pam_end. Here, the session is still not open, we
     don't have to close it.
   - a HAVE_PAM_FAIL_DELAY is missing,
 - su: fixed pam session support (patch from Topi Miettinen; fixed #57526,
@@ -395,7 +840,7 @@ shadow-4.0.14 -> shadow-4.0.15						13-03-2006
 - userdel: user's group is already removed by update_groups().
   remove_group() is not needed (bug introduced in 4.0.14 on merge FC fixes).
   Fixed by Nicolas François <nicolas.francois@centraliens.net>,
-- useradd: allways remove group and gshadow databases lock, Fixed by Nicolas
+- useradd: always remove group and gshadow databases lock, Fixed by Nicolas
   François <nicolas.francois@centraliens.net>
   (http://bugs.debian.org/348250)
 - auditing fixes:
@@ -403,14 +848,14 @@ shadow-4.0.14 -> shadow-4.0.15						13-03-2006
     added audit_logger() prototype),
   - useradd: fixed excess audit_logger() argument,
 - chage: added missing \n on display password status if password must be
-  chaged,
+  changed,
 - useradd: fixed allow non-unique UID (http://bugs.debian.org/351281),
-- variouse code cleanups for make possible compilation of shadow with -Wall
+- various code cleanups for make possible compilation of shadow with -Wall
   -Werror (by Alexander Gattin <xrgtn@yandex.ru>),
 - su: move exit() outside libmisc/shell.c::shell() for handle shell() errors
   on higher level (now is better visable where some programs exit with 126
   and 127 exit codes); added new shell() parameter (char *const envp[])
-  which allow fix preserving enviloment in su on using -p, (patch by
+  which allow fix preserving enviroment in su on using -p, (patch by
   Alexander Gattin <xrgtn@yandex.ru>),
 - su: added handle -c,--command option for GNU su compliance (merge
   437_su_-c_option Debian patch),
@@ -458,7 +903,7 @@ shadow-4.0.13 -> shadow-4.0.14						03-01-2006
 - userdel: make the -f option force the removal of the user's group (even if it
   is the primary group of another user)
   (merge 453_userdel_-f_removes_group Debian patch),
-- usermod: rewrited for use getopt_long() (Christian Perrier <bubulle@kheops.frmug.org>),
+- usermod: rewritten for use getopt_long() (Christian Perrier <bubulle@kheops.frmug.org>),
 - grpck: fixed segmentation fault on using -s when /etc/gshadow is empty (fix by
   Tomasz Lemiech <szpajder@staszic.waw.pl>),
 - passwd: remove handle -f, -g and -s options.
@@ -467,7 +912,7 @@ shadow-4.0.13 -> shadow-4.0.14						03-01-2006
   Nicolas François <nicolas.francois@centraliens.net>)
 - su: export $USER and $SHELL as well as $HOME (http://bugs.debian.org/11003 and
   http://bugs.debian.org/11189),
-- su, vipw: rewrited for use getopt_long(),
+- su, vipw: rewritten for use getopt_long(),
 - su: log successful/failed through syslog (http://bugs.debian.org/190215),
 - updated translations: ca, cs, da, eu, fi, fr, it, pl, pt, ru, sv, tl, vi,
 - new translations: gl.
@@ -501,7 +946,7 @@ shadow-4.0.12 -> shadow-4.0.13						10-10-2005
 
 *** general:
 - chage: removed duplicated pam_start(),
-- chfn, chsh: finished PAM support usin pam_start() and co.,
+- chfn, chsh: finished PAM support using pam_start() and co.,
 - userdel: userdel should not remove the group which is primary for someone else
   (fix by Nicolas François <nicolas.francois@centraliens.net>
   http://bugs.debian.org/295416),
@@ -510,7 +955,7 @@ shadow-4.0.12 -> shadow-4.0.13						10-10-2005
 - fixedlib/commonio.c: don't assume selinux is enabled if is_selinux_enabled()
   returns -1 (merge isSelinuxEnabled FC patch by Jeremy Katz <katzj@redhat.com>),
 - login, su (non-PAM case): fixed setup max address space limits (added missing break
-  statement in case) spoted by Lasse Collin <lasse.collin@tukaani.org>,
+  statement in case) spotted by Lasse Collin <lasse.collin@tukaani.org>,
 - auditing support added. Patch prepared by Peter Vrabec <pvrabec@redhat.com> basing
   on work by Steve Grubb from http://bugzilla.redhat.com/bugzilla/show_bug.cgi?id=159215
   Now auditing support have commands: chage, gpasswd, groupadd, groupdel, groupmod,
@@ -527,12 +972,12 @@ shadow-4.0.12 -> shadow-4.0.13						10-10-2005
   This will permit to adduser Debian script to detect if chage failed because the
   system doesn't have shadowed passwords (fix for http://bugs.debian.org/317012),
 - merge 010_more-i18ned-messages Debian patch which adds i18n support for few
-  more messages (orginaly patch was prepared by Guillem Jover <guillem@debian.org>),
+  more messages (originally patch was prepared by Guillem Jover <guillem@debian.org>),
 - lastlog: added handle -b option which allow print only lastlog records older than
   specified DAYS (fix by <miles@lubin.us>),
 - chpasswd, gpasswd, newusers: fixed libmisc/salt.c for use login.defs::MD5_CRYPT_ENAB
   only if PAM support is disabled (fix by John Gatewood Ham <zappaman@buraphalinux.org>),
-- passwd: rewrited for use getopt_long(),
+- passwd: rewritten for use getopt_long(),
 - newgrp: when newgrp process sits between parent and child shells, it should
   propagate STOPs from child to parent and CONTs from parent to child,
   otherwise e.g. bash's "suspend" command won't work
@@ -542,11 +987,11 @@ shadow-4.0.12 -> shadow-4.0.13						10-10-2005
 - chsh(1), groupadd(8), newusers(8), pwconv(8), useradd(8), userdel(8), usermod(8):
   added missing references to /etc/login.defs and login.defs(5)
   (Christian Perrier <bubulle@kheops.frmug.org>),
-- passwd(5): rewrited based on work by Greg Wooledge <greg@wooledge.org>
+- passwd(5): rewritten based on work by Greg Wooledge <greg@wooledge.org>
   http://bugs.debian.org/328113
 - login(1): added securetty(5) to SEE ALSO section
   (fixed Debian bug http://bugs.debian.org/325773),
-- groupadd(8), useradd(8): fix regular expression describing alloved login/group
+- groupadd(8), useradd(8): fix regular expression describing allowed login/group
   names (pointed by Nicolas François <nicolas.francois@centraliens.net>)
   (correct is [a-z_][a-z0-9_-]*[$]),
 - groupadd(8), useradd(8): documents in CAVEATS section the limitations shadow
@@ -556,9 +1001,9 @@ shadow-4.0.12 -> shadow-4.0.13						10-10-2005
 shadow-4.0.11.1 -> shadow-4.0.12					22-08-2005
 
 *** general:
-- newgrp, login: remove using login.defs::CLOSE_SESSIONS variable and allways 
+- newgrp, login: remove using login.defs::CLOSE_SESSIONS variable and always
   close PAM session,
-- fixed configure.in: realy enable shadow group support by default (pointed by 
+- fixed configure.in: really enable shadow group support by default (pointed by
   Greg Schafer <gschafer@zip.com.au> and Peter Vrabec <pvrabec@redhat.com>),
 - login.defs: removed handle QMAIL_DIR variable,
 - login: allow regular user to login on read-only root file system (not only for root)
@@ -583,9 +1028,9 @@ shadow-4.0.11.1 -> shadow-4.0.12					22-08-2005
   period and permit brute-force attacks (fixed http://bugs.debian.org/288827),
 - uClibc fixes (by Martin Schlemmer <azarah@nosferatu.za.org>):
   added require ngettext (added [need-ngettext] to AM_GNU_GETTEXT() parameters)
-  and stub prototype for ngettext() in lib/prototypes.h (neccessary if shadow
+  and stub prototype for ngettext() in lib/prototypes.h (necessary if shadow
   compiled with disabled NLS support)
-- groupadd: rewrited for use getopt_long(),
+- groupadd: rewritten for use getopt_long(),
 - groupadd, groupdel, groupmod, userdel: do OPENLOG() before pam_start(),
 - groupadd: fixed double OPENLOG(),
 - removed lib/{grpack,gspack,pwpack,sppack}.c and prototypes from lib/prototypes.h
@@ -621,7 +1066,7 @@ shadow-4.0.10 -> shadow-4.0.11						18-07-2005
 - su: ignore SIGINT while authenticating. A ^C could defeat the waiting period and
   permit brute-force attacks. Also ignore SIGQUIT.
   Fixed: http://bugs.debian.org/52372 and http://bugs.debian.org/288827
-- useradd: rewrited for use getopt_long(),
+- useradd: rewritten for use getopt_long(),
 - newgrp: add fix for handle splitted NIS groups: extends the functionality that,
   if the requested group is given, all groups of the same GID are tested for
   membership of the requesting user.
@@ -635,7 +1080,7 @@ shadow-4.0.10 -> shadow-4.0.11						18-07-2005
 - S/Key support is back,
 - usermod: added -a option. This flag can only be used in conjunction with the -G
   option. It cause usermod to append user to the current supplementary group list.
-  (patch by Peter Vrabec <pvrabec@redhat.com>) 
+  (patch by Peter Vrabec <pvrabec@redhat.com>)
 - chage: added missing \n in error messages,
 - useradd, groupadd: change -O option to -K and document it in man page,
 - su, sulogin, login: fixed erroneous warning messages when used with PAM about some
@@ -652,7 +1097,7 @@ shadow-4.0.10 -> shadow-4.0.11						18-07-2005
 - updated translations: cs, da, de, es, fi, pl, pt, ro, ru, sk.
 *** documentation:
 - pwck(8): document -q option (based on Debian patch for fix http://bugs.debian.org/309408)
-- pwck(8): rewrited OPTIONS section and better SYNOPSIS,
+- pwck(8): rewritten OPTIONS section and better SYNOPSIS,
 - lastlog(8): document that lastlog is a sparse file, and don't need to be rotated
   http://bugs.debian.org/219321
 - login(8): better explain the respective roles of login, init and getty with regards
@@ -666,12 +1111,12 @@ shadow-4.0.9 -> shadow-4.0.10						28-06-2005
 
 *** general:
 - mkpasswd: removed,
-- userdel: now deletes user groups from /etc/gshdow as well as /etc/group.
+- userdel: now deletes user groups from /etc/gshadow as well as /etc/group.
   Fix by Nicolas François <nicolas.francois@centraliens.net>.
   http://bugs.debian.org/99442
 - usermod: when relocating a user's home directory, don't fail and remove the new
   home directory if we can't remove the old home directory for some
-  reason; the results can be spectularly poort if, for instance, only
+  reason; the results can be spectacularly poor if, for instance, only
   the rmdir() fails. Patch prepared by Timo Lindfors <lindi-spamtrap@newmail.com>.
   http://bugs.debian.org/166369
 - su: fix syslogs to be less ambiguous. Use old:new format instead of old-new
@@ -679,23 +1124,23 @@ shadow-4.0.9 -> shadow-4.0.10						28-06-2005
   http://bugs.debian.org/213592
 - removed not used now libmisc/setup.c,
 - login: use also UTMPX API instead UTMP on failure (login was affected for this
-  when shadow was builded without PAM support)
+  when shadow was built without PAM support)
   patch by Nicolas François <nicolas.francois@centraliens.net>
 - login: the PAM session needs to be closed as root, thus before change_uid()
   http://bugs.debian.org/53570 http://bugs.debian.org/195048 http://bugs.debian.org/211884
 - login: made login's -f option also able to use the username after -- if none
   was passed as it's optarg
-  http://bugs.debian.org/53702 
+  http://bugs.debian.org/53702
 - login: check for hushed login and pass PAM_SILENT if true,
   http://bugs.debian.org/48002
 - login: fixed username on succesful login (was using the normal username,
   when it should have used pam_user) http://bugs.debian.org/47819
-- remove using SHADOWPWD #define so now shadow is allways builded with shadow
-  passwowd support,
-- chage: rewrited for use getopt_long(),
+- remove using SHADOWPWD #define so now shadow is always built with shadow
+  password support,
+- chage: rewritten for use getopt_long(),
 - updated translations: ca, cs, da, fi, pl, ru, zh_TW.
 *** documentation:
-- most of the man pages now are generated from XML files so in case submiting any
+- most of the man pages now are generated from XML files so in case submitting any
   chages to this resources please make diff to XML files,
 - chfn: give more details about the influence of login.defs on what's allowed to
   users.
@@ -703,7 +1148,7 @@ shadow-4.0.9 -> shadow-4.0.10						28-06-2005
 shadow-4.0.8 -> shadow-4.0.9						23-05-2005
 
 *** general:
-- passwd: fixed segfault in non-PAM connfiguration
+- passwd: fixed segfault in non-PAM configuration
   (submited by Greg Schafer <gschafer@zip.com.au>),
 - newgrp: fixed NULL pointer dereference - getlogin() and ttyname() can
   return NULL which is not checked (http://bugs.debian.org/162303),
@@ -725,15 +1170,15 @@ shadow-4.0.7 -> shadow-4.0.8						26-04-2005
 - configure.in: add using AC_GNU_SOURCE macro for kill compilation warnings about
   implicit declaration of function `fseeko',
 - faillog: changed faillog record display format for allow fit in 80 columns all
-  faillog atributies,
+  faillog attributes,
 - removed NDBM code (unused),
-- fixed use of SU_WHEEL_ONLY in su. Now su realy is avalaible for wheel group
+- fixed use of SU_WHEEL_ONLY in su. Now su really is available for wheel group
   members. Thanks to Mike Frysinger <vapier@gentoo.org> for report:
   http://bugs.gentoo.org/show_bug.cgi?id=80345
 - drop never finished kerberos and des_rpc support (for kerberos support back firs
   must be prepared modularization),
 - fixed UTMP path detection (by Kelledin <kelledin@users.sf.net>),
-- useradd: rewrited group count to dynamic (by John Newbigin
+- useradd: rewritten group count to dynamic (by John Newbigin
   <jnewbigin@ict.swin.edu.au>),
 - login: fixed create lastlog entry fo users never loged in on non-PAM
   variant of login (fix by <oracular@ziplip.com>),
@@ -748,7 +1193,7 @@ shadow-4.0.7 -> shadow-4.0.8						26-04-2005
   fchmod() is executed. (Actually, we could also pass the final "mode" to
   the open() call and then save the consequent fchmod().)
 - SELinux changes: added changes in chage, chfn, chsh, passwd for allow
-  construct more grained user password/accuunt properties on SELinux
+  construct more grained user password/account properties on SELinux
   policies level. Patch originally based on RH changes (submited by Chris
   PeBenito <pebenito@gentoo.org>),
 - added SELinux changes: in libmisc/copydir.c (based on Fedora patch),
@@ -763,10 +1208,10 @@ shadow-4.0.7 -> shadow-4.0.8						26-04-2005
 -- new: chage.1, chpasswd.8, expiry.1, faillog.5, faillog.8, getspnam.3,
    logoutd.8, porttime.5, pwck.8, shadow.3, shadowconfig.8, su.1,
 - passwd(1): fix #160477 Debian bug: improve -S output description,
-- newgrp(1): fix #251926, #166173, #113191 Debian bugs: explain why editing /etc/group   
+- newgrp(1): fix #251926, #166173, #113191 Debian bugs: explain why editing /etc/group
   (without gshadow) doesn't permit to use newgrp,
 - newgrp(1): newgrp uses /bin/sh (not bash),
-- faillog(8): updated after rewrited faillog command for use getopt_long(),
+- faillog(8): updated after rewritten faillog command for use getopt_long(),
 - login(1): removed fragment about abilities pass enviroment variables in login prompt,
 - gshadow(5): new file (by Nicolas Nicolas François <nicolas.francois@centraliens.net>),
 - usermod(8): fixed #302388 Debian bug: added separated -o option description,
@@ -784,24 +1229,24 @@ shadow-4.0.6 -> shadow-4.0.7						26-01-2005
 -- use fseeko() instead fseek() and remove casting file offsets to unsigned
    long.
 - lastlog:
--- rewrited source code using the same style as in chpasswd.c,
--- open lastlog file after finish parse comman line optiomns
-   (now --help otput can be displayd for users without lastlog
+-- rewritten source code using the same style as in chpasswd.c,
+-- open lastlog file after finish parse commandline options
+   (now --help output can be displayed for users without lastlog
    file read permission),
 -- cleanups in lastlog(8) man page using the same style as in
    chpasswd(8).
 - chpasswd:
 -- switch chpasswd to use getopt_long() and adds a --md5 option
    (by Ian Gulliver <ian@penguinhosting.net>),
--- rewrited chpasswd(8) man page.  
+-- rewritten chpasswd(8) man page.
 
 shadow-4.0.5 -> shadow-4.0.6						08-11-2004
 
 - su: fixed adding of pam_env env variables to enviroment
   (Martin Schlemmer <azarah@nosferatu.za.org>),
 - autoconf: fixed filling MAIL_SPOOL_DIR and MAIL_SPOOL_FILE variables
-  which was allways empty (Gregorio Guidi <g.guidi@sns.it>),
-- realuy closse security bug in libmisc/pwdcheck.c,
+  which was always empty (Gregorio Guidi <g.guidi@sns.it>),
+- really close security bug in libmisc/pwdcheck.c,
 - added missing template/example PAM service config files for chfn, chsh and
   userdel,
 - do not translate variable names from /etc/default/useradd during
@@ -812,10 +1257,10 @@ shadow-4.0.4.1 -> shadow-4.0.5						27-10-2004
 - change libmisc to private static library,
 - added SELinux support (basing on patch from Gentoo),
 - chage: more verbose/human readable -l output. This output is much more
-  beter for send directly via email for each users as message with account
+  better for send directly via email for each users as message with account
   status (for example as message with warning about account/password expiration),
 - login: fixed handle -f option: now it works correctly without specify "-h
-  <host>" if open login session localy is required (thanks for help
+  <host>" if open login session locally is required (thanks for help
   investigate bug for Krzysztof Kotlenga),
 - userdel: when removing a user with userdel, userdel was always exits with 1 (fixed).
   Based on http://bugs.gentoo.org/show_bug.cgi?id=66687,
@@ -829,7 +1274,7 @@ shadow-4.0.4.1 -> shadow-4.0.5						27-10-2004
   makes httpd Option SymlinkIfOwnerMatch break for default weg pages
   including symlinks placed into /etc/skel/public_html for example.
   http://bugzilla.redhat.com/bugzilla/show_bug.cgi?id=66819
-- su: add pam_open_session() support. If builded without PAM support
+- su: add pam_open_session() support. If built without PAM support
   propagate $DISPLAY and $XAUTHORITY enviroment variables.
   Based on http://www.gentoo.org/cgi-bin/viewcvs.cgi/sys-apps/shadow/files/shadow-4.0.4.1-su-pam_open_session.patch?rev=1.1
 - applied 036_pam_access_with_preauth.patch Debian patch submited by Bjorn
@@ -842,11 +1287,11 @@ shadow-4.0.4.1 -> shadow-4.0.5						27-10-2004
     Use constant strings rather than argv[0] for syslog ident in the user
     management commands,
   shadow-4.0.4.1-owl-tmp.diff:
-    Remove using mktemp() if mkstemp() prototype not found (use allways mkstemp()),
+    Remove using mktemp() if mkstemp() prototype not found (use always mkstemp()),
   shadow-4.0.4.1-owl-check-reads.diff:
     Add checking for read errors in commonio and vipw/vigr (not doing so could
     result in data loss when the records are written back),
-- fixed securirty bug in libmisc/pwdcheck.c which allow unauthorized
+- fixed security bug in libmisc/pwdcheck.c which allow unauthorized
   account properties modification.
   Affected tools: chfn and chsh.
   Bug was discovered by Martin Schulze <joey@infodrom.org>.
@@ -862,12 +1307,12 @@ shadow-4.0.4.1 -> shadow-4.0.5						27-10-2004
 
 shadow-4.0.4 => shadow-4.0.4.1						14-01-2004
 - bug fixes in automake files for generate correct tar ball on "make dist":
-  added mising "EXTRA_DIST = $(man_MANS)" in man/*/Makefile.am.
+  added missing "EXTRA_DIST = $(man_MANS)" in man/*/Makefile.am.
 
-shadow-4.0.3 => shadow-4.0.4						14-01-2004	
+shadow-4.0.3 => shadow-4.0.4						14-01-2004
 
 *** general:
-- added missing information about -f options in groupadd usage mesage
+- added missing information about -f options in groupadd usage message
   (document this also in man page),
 - removed TCFS support (tcfs is dead),
 - convert all po/*.po files to utf-8,
@@ -875,7 +1320,7 @@ shadow-4.0.3 => shadow-4.0.4						14-01-2004
   per service flushing method instead HUPing nscd process),
 - removed old AUTH_METHODS dependent code,
 - chage: now all code depend on SHADOWPWD. If shadow will not be configured
-  on autoconf level for using shadow possword chage is olny stub which
+  on autoconf level for using shadow password chage is olny stub which
   informs "chage not configured for shadow password support."
 - dpasswd: removed,
 - login: remove handle login.defs::DIALUPS_CHECK_ENAB code,
@@ -883,7 +1328,7 @@ shadow-4.0.3 => shadow-4.0.4						14-01-2004
 - ALL tools, libraries: remove old SVR4, SVR4_SI86_EUA BSD_QUOTA and ATT_AGE
   dependent code,
 - ALL: ready for gettext 0.11.5, automake 1.7.4, autoconf 2.57,
-- logoutd, userd: handle also utmpx if avalaile,
+- logoutd, userd: handle also utmpx if available,
 - newgrp: fix for non-PAM version
   Use CLOSE_SESSIONS depending code only when USE_PAM.
   The problem was reported by Mattias Webjorn Eriksson using Slackware
@@ -911,7 +1356,7 @@ shadow-4.0.3 => shadow-4.0.4						14-01-2004
 
 shadow-4.0.2 => shadow-4.0.3						 13-03-2002
 
-- added variouse cs, de, fr, id, it, ko man pages found mainly in national
+- added various cs, de, fr, id, it, ko man pages found mainly in national
   man pages translations projects (this documents are not synced with
   current en version but you know .. "Documentations is lik sex. When it is
   good it very very good. Whet it is bad it is better than nothing."). Any
@@ -927,9 +1372,9 @@ shadow-4.0.2 => shadow-4.0.3						 13-03-2002
 shadow-4.0.1 => shadow-4.0.2						 17-02-2002
 
 - resolve many fuzzy translations also all this which may cause problems on
-  displaing long uid/gid,
-- allow use "$" on ending in cereated by useradd usermname accounts for allow
-  create machine acounts for samba (thanks to Jerome Borsboom
+  displaying long uid/gid,
+- allow use "$" on ending in created by useradd username accounts for allow
+  create machine accounts for samba (thanks to Jerome Borsboom
   <borsboom@tch.fgg.eur.nl> for point this problem in 4.0.1),
 - fix small but ugly bug in configure.in in libpam_mics library detection.
 
@@ -949,7 +1394,7 @@ shadow-4.0.0 => shadow-4.0.1
     as root.  If root does read-only, there's no lock needed. Added missing
     "#include <errno.h>" for above (me).
   shadow-4.0.0-owl-warnings.diff
-    Olny one fix from this patch was aplayd because other was fixed few days
+    Olny one fix from this patch was applied because other was fixed few days
     before :)
   shadow-4.0.0-owl-check_names.diff
     Merge only prat this patch with checking login name matching; checking
@@ -957,13 +1402,13 @@ shadow-4.0.0 => shadow-4.0.1
     probably _POSIX_LOGIN_NAME_MAX from <bits/posix1_lim.h>,
   shadow-4.0.0-owl-chage-drop-priv.diff
   shadow-4.0.0-owl-pam-auth.diff
-    Merge part with reorder initialize PAM and checkin is chage is runed by
+    Merge part with reorder initialize PAM and checking if chage is runed by
     root or not - now chage can be runed from non-root account for checking
     by user own account information (if PAM enabled).
 - fixes for handle/print correctly 32bit uid/gid (Thorsten Kukuk <kukuk@suse.de>),
 - implemented functions for better reloading the nscd cache (per NSS map)
   (Thorsten Kukuk <kukuk@suse.de>),
-- fixed warnings "not used but defined" on compile using gcc 3.0.x 
+- fixed warnings "not used but defined" on compile using gcc 3.0.x
   (bulletpr00ph <bullet@users.sourceforge.net>),
 - added ja, ko translations found in SuSE,
 - added symlinks: newgrp -> sg, vipw -> vigr,
@@ -971,7 +1416,7 @@ shadow-4.0.0 => shadow-4.0.1
 - added sg(1) man page as roff .so link to newgrp(1),
 - installed fix for SEGV when using pwck -s on /etc/passwd file with
   empty lines in it.
-  
+
 shadow-20001016 => shadow-4.0.0						 06-01-2002
 
 - fix bug discovered and fixed by Marcel Ritter
@@ -1001,30 +1446,30 @@ shadow-20001016 => shadow-4.0.0						 06-01-2002
 - much better automake support,
 - added pt_BR man pages for gpasswd(1), groupadd(8), groupdel(8),
   groupmod(8), shadow(5) (man pages for other nations also are welcome),
-- mamny small fixes and updates nad improvements in man pages,
-- aplayed Debian patch to man pages for shadowconfig,
+- many small fixes and updates nad improvements in man pages,
+- applied Debian patch to man pages for shadowconfig,
 - remove limit to 6 chars logged tty name (012_libmisc_sulog.c.diff Debian
   patch).
 
 shadow-20001012 -> shadow-20001016:
-- conditionaly disabled body reload_nscd() because not every
+- conditionally disabled body reload_nscd() because not every
   version of nscd can handle it (this can be enabled by define
   ENABLE_NSCD_SIGHUP) (Marek Michałkiewicz  <marekm@linux.org.pl>)
 - fixes on autoconf/automake level for dist target,
-- Julianne F. Haugh new contact adress.
+- Julianne F. Haugh new contact address.
 
 shadow-20000902 => shadow-20001012
 
-- removed /redhat directory with obsoleted files (partialy rewrited spec
+- removed /redhat directory with obsoleted files (partially rewritten spec
   file is now in root directory),
-- aplayed shadow-19990827-group.patch patch from RH wich prevents adduser
+- applied shadow-19990827-group.patch patch from RH wich prevents adduser
   overwrite previously existing groups in adduser,
 - added PAM support for chage (bind to "chage" PAM config file) also
   added PAM support for all other small tools like chpasswd, groupadd,
-  groupdel, groupmod, newusers, useradd, userdel, usermod (bind to common 
-  "shadow" PAM config file) - this modificaytions mainly based on
+  groupdel, groupmod, newusers, useradd, userdel, usermod (bind to common
+  "shadow" PAM config file) - this modifications mainly based on
   modifications prepared by Janek Rękojarski <baggins@pld.org.pl>,
-- many small fixes and improvments in automake (mow "make dist"
+- many small fixes and improvements in automake (mow "make dist"
   works correctly),
 - added cs translation (Jiri Pavlovsky <Jiri.Pavlovsky@ff.cuni.cz>).
 

README

@@ -1,106 +1,36 @@
-Shadow SITES
-============
+# shadow-utils
 
-FTP site
-	ftp://pkg-shadow.alioth.debian.org/pub/pkg-shadow
+## Introduction
+The shadow-utils package includes the necessary programs for
+converting UNIX password files to the shadow password format, plus
+programs for managing user and group accounts. The pwconv command
+converts passwords to the shadow password format. The pwunconv command
+unconverts shadow passwords and generates a passwd file (a standard
+UNIX password file). The pwck command checks the integrity of password
+and shadow files. The lastlog command prints out the last login times
+for all users. The useradd, userdel, and usermod commands are used for
+managing user accounts. The groupadd, groupdel, and groupmod commands
+are used for managing group accounts.
 
-SVN repository
-	anonymous read only access: svn://svn.debian.org/pkg-shadow/
+## Sites
+* [Homepage](https://github.com/shadow-maint/shadow)
+* [Issue tracker](https://github.com/shadow-maint/shadow/issues)
+* [Releases](https://github.com/shadow-maint/shadow/releases)
 
-SVN web interface
-	http://svn.debian.org/wsvn/pkg-shadow
+## Contacts
+There are several ways to contact us:
+* [the general discussion mailing list](
+  https://alioth-lists.debian.net/mailman/listinfo/pkg-shadow-devel)
+* the #shadow IRC channel on libera.chat:
+  * irc://irc.libera.chat/shadow
 
-Mailing lists
-	for general discuss: pkg-shadow-devel@lists.alioth.debian.org
-	commit list: pkg-shadow-commits@lists.alioth.debian.org
-
-Mailing lists subscription
-	http://lists.alioth.debian.org/mailman/listinfo/pkg-shadow-devel
-	http://lists.alioth.debian.org/mailman/listinfo/pkg-shadow-commits
-
-Mailing lists archives:
-	http://lists.alioth.debian.org/pipermail/pkg-shadow-devel/
-	http://lists.alioth.debian.org/pipermail/pkg-shadow-commits/
-
-S/Key support:
-	Shadow can be built with S/Key support using the S/Key package from:
-
-	http://cvsweb.netbsd.org/bsdweb.cgi/src/lib/libskey/
-	or
-	http://gentoo.osuosl.org/distfiles/skey-1.1.5.tar.bz2
-
-Authors and contributors
-========================
-
-Thanks to at least the following people for sending me patches, bug
-reports and various comments.  This list may be incomplete, I received
-a lot of mail...
-
-
-Adam Rudnicki <adam@v-lo.krakow.pl>
-Alan Curry <pacman@tardis.mars.net>
-Alexander O. Yuriev <alex@bach.cis.temple.edu>
-Algis Rudys <arudys@rice.edu>
-Andreas Jaeger <aj@arthur.rhein-neckar.de>
-Aniello Del Sorbo <anidel@edu-gw.dia.unisa.it>
-Anton Gluck <gluc@midway.uchicago.edu>
-Arkadiusz Miskiewicz <misiek@pld.org.pl>
-Ben Collins <bcollins@debian.org>
-Brian R. Gaeke <brg@dgate.org>
-Calle Karlsson <ckn@kash.se>
-Chip Rosenthal <chip@unicom.com>
-Chris Evans <lady0110@sable.ox.ac.uk>
-Cristian Gafton <gafton@sorosis.ro>
-Darcy Boese <possum@chardonnay.niagara.com>
-Dave Hagewood <admin@arrowweb.com>
-David A. Holland <dholland@hcs.harvard.edu>
-David Frey <David.Frey@lugs.ch>
-Ed Carp <ecarp@netcom.com>
-Floody <flood@evcom.net>
-Frank Denis <j@4u.net>
-George Kraft IV <gk4@us.ibm.com>
-Greg Mortensen <loki@world.std.com>
-Guido van Rooij
-Guy Maor <maor@debian.org>
-Hrvoje Dogan <hdogan@bjesomar.srce.hr>
-Janos Farkas <chexum@bankinf.banki.hu>
-Jay Soffian <jay@lw.net>
-Jesse Thilo <Jesse.Thilo@pobox.com>
-Joey Hess <joey@kite.ml.org>
-John Adelsberger <jja@umr.edu>
-Jonathan Hankins <jhankins@mailserv.homewood.k12.al.us>
-Jon Lewis <jlewis@lewis.org>
-Joshua Cowan <jcowan@hermit.reslife.okstate.edu>
-Judd Bourgeois <shagboy@bluesky.net>
-Juergen Heinzl <unicorn@noris.net>
-Juha Virtanen <jiivee@iki.fi>
-Julianne Frances Haugh <jockgrrl@ix.netcom.com>
-Leonard N. Zubkoff <lnz@dandelion.com>
-Luca Berra <bluca@www.polimi.it>
-Lutz Schwalowsky <schwalow@mineralogie.uni-hamburg.de>
-Marc Ewing <marc@redhat.com>
-Martin Bene <mb@sime.com>
-Martin Mares <mj@gts.cz>
-Michael Meskes <meskes@topsystem.de>
-Michael Talbot-Wilson <mike@calypso.bns.com.au>
-Mike Pakovic <mpakovic@users.southeast.net>
-Nicolas François <nicolas.francois@centraliens.net>
-Nikos Mavroyanopoulos <nmav@i-net.paiko.gr>
-Pavel Machek <pavel@bug.ucw.cz>
-Phillip Street
-Rafał Maszkowski <rzm@icm.edu.pl>
-Rani Chouha <ranibey@smartec.com>
-Sami Kerola <kerolasa@rocketmail.com>
-Shane Watts <shane@nexus.mlckew.edu.au>
-Steve M. Robbins <steve@nyongwa.montreal.qc.ca>
-Thorsten Kukuk <kukuk@suse.de>
-Tim Hockin <thockin@eagle.ais.net>
-Timo Karjalainen <timok@iki.fi>
-Ulisses Alonso Camaro <ulisses@pusa.eleinf.uv.es>
-Werner Fink <werner@suse.de>
-
-Maintainers
-===========
-
-Tomasz Kłoczko <kloczek@pld.org.pl> (2000-2006)
+### Mailing archives
+* [the general discussion mailing list archive](
+  https://alioth-lists.debian.net/pipermail/pkg-shadow-devel/)
+* [the commit mailing list archive](
+  https://alioth-lists-archive.debian.net/pipermail/pkg-shadow-commits/),
+  only used for historical purposes
 
+## Authors and maintainers
+Authors and maintainers are listed in [AUTHORS.md](
+https://github.com/shadow-maint/shadow/blob/master/AUTHORS.md).

TODO

@@ -1,11 +1,45 @@
-passwd -l should lock the password, not the account.
+ * Create a common usage function that'd take the array of
+   long options and an array of descriptions and output that so things would
+   be standardized across the utils.
+   Usage strings should be normalized and split first.
+   Investigate optparse.
 
-vipw: Test SHADOWGRP support before using gshadow features.
 
-PAM: add support for customization of the PAM support (i.e. support the
-Debian PAM configuration)
+/etc/default/useradd
+ * GROUP=1000 should accept a group name.
 
-PAM: check if a non-interactive conversation function could be used to 
+Check when RLOGIN is enabled if ruserok() exists
+
+Move selinux_file_context out of libmisc/copydir.c
+
+Review hardcoded root account?
+
+review all call to strto
+
+libmisc/cleanup_user.c
+	cleanup needed (cleanup_report_add_user* not used)
+
+
+libxcrypt support
+ * http://wiki.linuxfromscratch.org/patches/browser/trunk/shadow/shadow-4.0.18.1-owl_blowfish-1.patch
+
+implement getlong, getulong.
+	avoid atoi, atol, atoul, strtol, strtoul, ...
+
+manpages: comment the RLOGIN parts
+
+Replace build_list (in lib/gshadow.c) and list (in lib/sgetgrent.c) by
+comma_to_list()
+
+Revert the modified files if all files could not be changed.
+  * or warn and indicate which files were modified and which were not.
+  * check the order the files are modified.
+
+report nscd_flush_cache failures?
+call nscd from the programs or from lib (commonio?)
+
+PAM: check if a non-interactive conversation function could be used to set
+the password in chpasswd and newusers
 
 WITH_SELINUX
   - review all tools to check that the strategies are consistent
@@ -13,33 +47,20 @@ WITH_SELINUX
 chage, chfn, chsh: same change needed as in passwd.
   - probably need moving check_selinux_access to a separate file.
 
-man useradd
-	document default behavior for GROUP
-	remove "The default group number is 1 or whatever is..."
-
-useradd manpage
-  - add -k option
-  - mention that -o require -u
-
 testsuite
  - newgrp
    - test with unknown user's GID
 
 newusers
  - add logging to SYSLOG & AUDIT
-
-faillog
- - accept numerical user and range of users
+ - use CREATE_HOME
+ - Add a -Z option (see useradd / usermod)
 
 Document when/where option appeared, document whether an option is standard
 or not.
 
-depends rules for the manpages
-
 Check all the expiry semantics
 
-Add options --crypt-method and --sha-rounds to gpasswd
-
 ALL:
 - move base passwd/shadow/group/gshadow operation to module for allow write
   different backend modules for db, NIS, LDAP and others. Default backend it
@@ -49,38 +70,58 @@ ALL:
   passwd have old piece of code with handling -r option and it will be good
   finish this and propagate on other shadow tools for allow operate on other
   user databases by well known tools.
+- Protect against signals. Register do_cleanups in a signal handler.
+
+- login.defs
+  - generate depending on configuration
 
 - useradd:
   - add handle create user mail spool in maildir format.
-
-- add handle -n switch in groups and id command for allow query is
-  group/user with specified id/gid exist - this will be very usable
-  on automation in packages for query/check is group/user exist in system
-  or not,
-
-- groupmems: 
-  - need some work on add PAM and i18n support.
+  - Add support for -k in -D mode
+  - Add support for -K in -D mode
+  - Add option to create or not the mail spool (and set the default in -D
+    mode)
+  - Change -l to reset the entry if an entry was already there
+  - set the mask in mkdir?
 
 - userdel:
   - add backup option for the removal of user resources,
-  - add lookop and remove per user group.
   - user_busy: check that the user is not running any processes.
+  - missing "deleting group" FAILED
+  - home dir removed, but userdel may fail and may leave the user
+    => warning needed
+
+- usermod
+  - add an option equivalent to useradd's -l (only when uid is changed)
+  - the mode of new home directories should be set according to the
+    original mode. Does copy_tree does this?
+  - user renamed, order is not kept in /etc/group (see
+    47_usermod-l_no_shadow_file). This is a problem when the first user is
+    considered as the admin.
+  - see mail "user ID change" on  April, 15
+    + fix call to chown (combination of -m and -u/-g)
+    + add tests
 
 - passwd:
   - check combination of options (e.g. -u/-l)
+  - when -u refuse to unlock because it would create an empty password, it
+    should not display "Password changed."
+    exit instead?
 
 - newgrp: check the USE_PAM section.
 
-- groupmems: check reason for isgroup
+- pwck
+  - Add check to move passwd passwords to shadow if there is a shadow
+    entry (with a password).
+  - Add check to move passwd passwords to shadow if there is a shadow
+    file.
+  - Support an alternative /etc/tcb directory as second parameter.
+  - add options -g / -G to specify alternative group / gshadow files
 
-- newusers: doc for pw_gid not clear. Differentiate
-            pw_gid specified and exist
-            pw_gid specified but does not exist
-             * name
-             * number
-            pw_gid not specified.
-- newusers: document what happens when no uid is specified.
-- newusers: add option --system?
+- su
+  - add a login.defs configuration parameter to add variables to keep in
+    the environment with "su -l" (TERM/TERMCOLOR/...)
 
--Documentation:
- * document when options were added.
+- vipw
+  - set ACLs and XATTRs on the temporary file (and backups?)
+  - vipw + selinux -> use lib/selinux.c

acinclude.m4

@@ -6,7 +6,7 @@ AC_DEFUN([JH_PATH_XML_CATALOG],
 [
   # check for the presence of the XML catalog
   AC_ARG_WITH([xml-catalog],
-              AC_HELP_STRING([--with-xml-catalog=CATALOG],
+              AS_HELP_STRING([--with-xml-catalog=CATALOG],
                              [path to xml catalog to use]),,
               [with_xml_catalog=/etc/xml/catalog])
   jh_found_xmlcatalog=true

autogen.sh

@@ -1,10 +0,0 @@
-#! /bin/sh
-autoreconf -v -f --install || exit 1
-./configure \
-	CFLAGS="-O2 -Wall" \
-	--enable-man \
-	--enable-maintainer-mode \
-	--disable-shared \
-	--without-libpam \
-	--with-selinux \
-	"$@"

compile

@@ -0,0 +1,348 @@
+#! /bin/sh
+# Wrapper for compilers which do not understand '-c -o'.
+
+scriptversion=2018-03-07.03; # UTC
+
+# Copyright (C) 1999-2021 Free Software Foundation, Inc.
+# Written by Tom Tromey <tromey@cygnus.com>.
+#
+# This program is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 2, or (at your option)
+# any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program.  If not, see <https://www.gnu.org/licenses/>.
+
+# As a special exception to the GNU General Public License, if you
+# distribute this file as part of a program that contains a
+# configuration script generated by Autoconf, you may include it under
+# the same distribution terms that you use for the rest of that program.
+
+# This file is maintained in Automake, please report
+# bugs to <bug-automake@gnu.org> or send patches to
+# <automake-patches@gnu.org>.
+
+nl='
+'
+
+# We need space, tab and new line, in precisely that order.  Quoting is
+# there to prevent tools from complaining about whitespace usage.
+IFS=" ""	$nl"
+
+file_conv=
+
+# func_file_conv build_file lazy
+# Convert a $build file to $host form and store it in $file
+# Currently only supports Windows hosts. If the determined conversion
+# type is listed in (the comma separated) LAZY, no conversion will
+# take place.
+func_file_conv ()
+{
+  file=$1
+  case $file in
+    / | /[!/]*) # absolute file, and not a UNC file
+      if test -z "$file_conv"; then
+	# lazily determine how to convert abs files
+	case `uname -s` in
+	  MINGW*)
+	    file_conv=mingw
+	    ;;
+	  CYGWIN* | MSYS*)
+	    file_conv=cygwin
+	    ;;
+	  *)
+	    file_conv=wine
+	    ;;
+	esac
+      fi
+      case $file_conv/,$2, in
+	*,$file_conv,*)
+	  ;;
+	mingw/*)
+	  file=`cmd //C echo "$file " | sed -e 's/"\(.*\) " *$/\1/'`
+	  ;;
+	cygwin/* | msys/*)
+	  file=`cygpath -m "$file" || echo "$file"`
+	  ;;
+	wine/*)
+	  file=`winepath -w "$file" || echo "$file"`
+	  ;;
+      esac
+      ;;
+  esac
+}
+
+# func_cl_dashL linkdir
+# Make cl look for libraries in LINKDIR
+func_cl_dashL ()
+{
+  func_file_conv "$1"
+  if test -z "$lib_path"; then
+    lib_path=$file
+  else
+    lib_path="$lib_path;$file"
+  fi
+  linker_opts="$linker_opts -LIBPATH:$file"
+}
+
+# func_cl_dashl library
+# Do a library search-path lookup for cl
+func_cl_dashl ()
+{
+  lib=$1
+  found=no
+  save_IFS=$IFS
+  IFS=';'
+  for dir in $lib_path $LIB
+  do
+    IFS=$save_IFS
+    if $shared && test -f "$dir/$lib.dll.lib"; then
+      found=yes
+      lib=$dir/$lib.dll.lib
+      break
+    fi
+    if test -f "$dir/$lib.lib"; then
+      found=yes
+      lib=$dir/$lib.lib
+      break
+    fi
+    if test -f "$dir/lib$lib.a"; then
+      found=yes
+      lib=$dir/lib$lib.a
+      break
+    fi
+  done
+  IFS=$save_IFS
+
+  if test "$found" != yes; then
+    lib=$lib.lib
+  fi
+}
+
+# func_cl_wrapper cl arg...
+# Adjust compile command to suit cl
+func_cl_wrapper ()
+{
+  # Assume a capable shell
+  lib_path=
+  shared=:
+  linker_opts=
+  for arg
+  do
+    if test -n "$eat"; then
+      eat=
+    else
+      case $1 in
+	-o)
+	  # configure might choose to run compile as 'compile cc -o foo foo.c'.
+	  eat=1
+	  case $2 in
+	    *.o | *.[oO][bB][jJ])
+	      func_file_conv "$2"
+	      set x "$@" -Fo"$file"
+	      shift
+	      ;;
+	    *)
+	      func_file_conv "$2"
+	      set x "$@" -Fe"$file"
+	      shift
+	      ;;
+	  esac
+	  ;;
+	-I)
+	  eat=1
+	  func_file_conv "$2" mingw
+	  set x "$@" -I"$file"
+	  shift
+	  ;;
+	-I*)
+	  func_file_conv "${1#-I}" mingw
+	  set x "$@" -I"$file"
+	  shift
+	  ;;
+	-l)
+	  eat=1
+	  func_cl_dashl "$2"
+	  set x "$@" "$lib"
+	  shift
+	  ;;
+	-l*)
+	  func_cl_dashl "${1#-l}"
+	  set x "$@" "$lib"
+	  shift
+	  ;;
+	-L)
+	  eat=1
+	  func_cl_dashL "$2"
+	  ;;
+	-L*)
+	  func_cl_dashL "${1#-L}"
+	  ;;
+	-static)
+	  shared=false
+	  ;;
+	-Wl,*)
+	  arg=${1#-Wl,}
+	  save_ifs="$IFS"; IFS=','
+	  for flag in $arg; do
+	    IFS="$save_ifs"
+	    linker_opts="$linker_opts $flag"
+	  done
+	  IFS="$save_ifs"
+	  ;;
+	-Xlinker)
+	  eat=1
+	  linker_opts="$linker_opts $2"
+	  ;;
+	-*)
+	  set x "$@" "$1"
+	  shift
+	  ;;
+	*.cc | *.CC | *.cxx | *.CXX | *.[cC]++)
+	  func_file_conv "$1"
+	  set x "$@" -Tp"$file"
+	  shift
+	  ;;
+	*.c | *.cpp | *.CPP | *.lib | *.LIB | *.Lib | *.OBJ | *.obj | *.[oO])
+	  func_file_conv "$1" mingw
+	  set x "$@" "$file"
+	  shift
+	  ;;
+	*)
+	  set x "$@" "$1"
+	  shift
+	  ;;
+      esac
+    fi
+    shift
+  done
+  if test -n "$linker_opts"; then
+    linker_opts="-link$linker_opts"
+  fi
+  exec "$@" $linker_opts
+  exit 1
+}
+
+eat=
+
+case $1 in
+  '')
+     echo "$0: No command.  Try '$0 --help' for more information." 1>&2
+     exit 1;
+     ;;
+  -h | --h*)
+    cat <<\EOF
+Usage: compile [--help] [--version] PROGRAM [ARGS]
+
+Wrapper for compilers which do not understand '-c -o'.
+Remove '-o dest.o' from ARGS, run PROGRAM with the remaining
+arguments, and rename the output as expected.
+
+If you are trying to build a whole package this is not the
+right script to run: please start by reading the file 'INSTALL'.
+
+Report bugs to <bug-automake@gnu.org>.
+EOF
+    exit $?
+    ;;
+  -v | --v*)
+    echo "compile $scriptversion"
+    exit $?
+    ;;
+  cl | *[/\\]cl | cl.exe | *[/\\]cl.exe | \
+  icl | *[/\\]icl | icl.exe | *[/\\]icl.exe )
+    func_cl_wrapper "$@"      # Doesn't return...
+    ;;
+esac
+
+ofile=
+cfile=
+
+for arg
+do
+  if test -n "$eat"; then
+    eat=
+  else
+    case $1 in
+      -o)
+	# configure might choose to run compile as 'compile cc -o foo foo.c'.
+	# So we strip '-o arg' only if arg is an object.
+	eat=1
+	case $2 in
+	  *.o | *.obj)
+	    ofile=$2
+	    ;;
+	  *)
+	    set x "$@" -o "$2"
+	    shift
+	    ;;
+	esac
+	;;
+      *.c)
+	cfile=$1
+	set x "$@" "$1"
+	shift
+	;;
+      *)
+	set x "$@" "$1"
+	shift
+	;;
+    esac
+  fi
+  shift
+done
+
+if test -z "$ofile" || test -z "$cfile"; then
+  # If no '-o' option was seen then we might have been invoked from a
+  # pattern rule where we don't need one.  That is ok -- this is a
+  # normal compilation that the losing compiler can handle.  If no
+  # '.c' file was seen then we are probably linking.  That is also
+  # ok.
+  exec "$@"
+fi
+
+# Name of file we expect compiler to create.
+cofile=`echo "$cfile" | sed 's|^.*[\\/]||; s|^[a-zA-Z]:||; s/\.c$/.o/'`
+
+# Create the lock directory.
+# Note: use '[/\\:.-]' here to ensure that we don't use the same name
+# that we are using for the .o file.  Also, base the name on the expected
+# object file name, since that is what matters with a parallel build.
+lockdir=`echo "$cofile" | sed -e 's|[/\\:.-]|_|g'`.d
+while true; do
+  if mkdir "$lockdir" >/dev/null 2>&1; then
+    break
+  fi
+  sleep 1
+done
+# FIXME: race condition here if user kills between mkdir and trap.
+trap "rmdir '$lockdir'; exit 1" 1 2 15
+
+# Run the compile.
+"$@"
+ret=$?
+
+if test -f "$cofile"; then
+  test "$cofile" = "$ofile" || mv "$cofile" "$ofile"
+elif test -f "${cofile}bj"; then
+  test "${cofile}bj" = "$ofile" || mv "${cofile}bj" "$ofile"
+fi
+
+rmdir "$lockdir"
+exit $ret
+
+# Local Variables:
+# mode: shell-script
+# sh-indentation: 2
+# eval: (add-hook 'before-save-hook 'time-stamp)
+# time-stamp-start: "scriptversion="
+# time-stamp-format: "%:y-%02m-%02d.%02H"
+# time-stamp-time-zone: "UTC0"
+# time-stamp-end: "; # UTC"
+# End:

config.h.in

@@ -0,0 +1,635 @@
+/* config.h.in.  Generated from configure.ac by autoheader.  */
+
+/* Define if account management tools should be installed setuid and
+   authenticate the callers */
+#undef ACCT_TOOLS_SETUID
+
+/* Define to 1 if translation of program messages to the user's native
+   language is requested. */
+#undef ENABLE_NLS
+
+/* Define to support the subordinate IDs. */
+#undef ENABLE_SUBIDS
+
+/* Path for faillog file. */
+#undef FAILLOG_FILE
+
+/* Define to the type of elements in the array set by `getgroups'. Usually
+   this is either `int' or `gid_t'. */
+#undef GETGROUPS_T
+
+/* max group name length */
+#undef GROUP_NAME_MAX_LENGTH
+
+/* Define to 1 if you have the declaration of 'pam_fail_delay' */
+#undef HAS_PAM_FAIL_DELAY
+
+/* Defined to 1 if you have the declaration of 'secure_getenv' */
+#undef HAS_SECURE_GETENV
+
+/* Define to 1 if you have the <acl/libacl.h> header file. */
+#undef HAVE_ACL_LIBACL_H
+
+/* Define to 1 if you have the `arc4random_buf' function. */
+#undef HAVE_ARC4RANDOM_BUF
+
+/* Define to 1 if you have the <attr/error_context.h> header file. */
+#undef HAVE_ATTR_ERROR_CONTEXT_H
+
+/* Define to 1 if you have the <attr/libattr.h> header file. */
+#undef HAVE_ATTR_LIBATTR_H
+
+/* Define to 1 if you have the Mac OS X function CFLocaleCopyCurrent in the
+   CoreFoundation framework. */
+#undef HAVE_CFLOCALECOPYCURRENT
+
+/* Define to 1 if you have the Mac OS X function CFPreferencesCopyAppValue in
+   the CoreFoundation framework. */
+#undef HAVE_CFPREFERENCESCOPYAPPVALUE
+
+/* Define to 1 if you have the <crypt.h> header file. */
+#undef HAVE_CRYPT_H
+
+/* Define if the GNU dcgettext() function is already present or preinstalled.
+   */
+#undef HAVE_DCGETTEXT
+
+/* Define to 1 if you have the declaration of `PAM_DATA_SILENT', and to 0 if
+   you don't. */
+#undef HAVE_DECL_PAM_DATA_SILENT
+
+/* Define to 1 if you have the declaration of `PAM_DELETE_CRED', and to 0 if
+   you don't. */
+#undef HAVE_DECL_PAM_DELETE_CRED
+
+/* Define to 1 if you have the declaration of `PAM_ESTABLISH_CRED', and to 0
+   if you don't. */
+#undef HAVE_DECL_PAM_ESTABLISH_CRED
+
+/* Define to 1 if you have the declaration of `PAM_NEW_AUTHTOK_REQD', and to 0
+   if you don't. */
+#undef HAVE_DECL_PAM_NEW_AUTHTOK_REQD
+
+/* Define to 1 if you have the <dlfcn.h> header file. */
+#undef HAVE_DLFCN_H
+
+/* Define to 1 if you have the <errno.h> header file. */
+#undef HAVE_ERRNO_H
+
+/* Define to 1 if you have the `explicit_bzero' function. */
+#undef HAVE_EXPLICIT_BZERO
+
+/* Define to 1 if you have the `fchmod' function. */
+#undef HAVE_FCHMOD
+
+/* Define to 1 if you have the `fchown' function. */
+#undef HAVE_FCHOWN
+
+/* Define to 1 if you have the <fcntl.h> header file. */
+#undef HAVE_FCNTL_H
+
+/* Define to 1 if you have the `fsync' function. */
+#undef HAVE_FSYNC
+
+/* Define to 1 if you have the `futimes' function. */
+#undef HAVE_FUTIMES
+
+/* Define to 1 if you have the `getentropy' function. */
+#undef HAVE_GETENTROPY
+
+/* Define to 1 if you have the `getgrgid_r' function. */
+#undef HAVE_GETGRGID_R
+
+/* Define to 1 if you have the `getgrnam_r' function. */
+#undef HAVE_GETGRNAM_R
+
+/* Define to 1 if you have the `getpwnam_r' function. */
+#undef HAVE_GETPWNAM_R
+
+/* Define to 1 if you have the `getpwuid_r' function. */
+#undef HAVE_GETPWUID_R
+
+/* Define to 1 if you have the `getrandom' function. */
+#undef HAVE_GETRANDOM
+
+/* Define to 1 if you have the `getspnam' function. */
+#undef HAVE_GETSPNAM
+
+/* Define to 1 if you have the `getspnam_r' function. */
+#undef HAVE_GETSPNAM_R
+
+/* Define if the GNU gettext() function is already present or preinstalled. */
+#undef HAVE_GETTEXT
+
+/* Define to 1 if you have the `getusershell' function. */
+#undef HAVE_GETUSERSHELL
+
+/* Define to 1 if you have the `getutent' function. */
+#undef HAVE_GETUTENT
+
+/* Define to 1 if you have the <gshadow.h> header file. */
+#undef HAVE_GSHADOW_H
+
+/* Define if you have the iconv() function and it works. */
+#undef HAVE_ICONV
+
+/* Define to 1 if you have the `initgroups' function. */
+#undef HAVE_INITGROUPS
+
+/* Define to 1 if you have the `innetgr' function. */
+#undef HAVE_INNETGR
+
+/* Define to 1 if you have the <inttypes.h> header file. */
+#undef HAVE_INTTYPES_H
+
+/* Define to 1 if you have the `l64a' function. */
+#undef HAVE_L64A
+
+/* Define to 1 if you have the <lastlog.h> header file. */
+#undef HAVE_LASTLOG_H
+
+/* Define to 1 if you have the `lckpwdf' function. */
+#undef HAVE_LCKPWDF
+
+/* Defined if you have libcrack. */
+#undef HAVE_LIBCRACK
+
+/* Defined if you have the ts&szs cracklib. */
+#undef HAVE_LIBCRACK_HIST
+
+/* Defined if it includes *Pw functions. */
+#undef HAVE_LIBCRACK_PW
+
+/* Define to 1 if you have the <limits.h> header file. */
+#undef HAVE_LIMITS_H
+
+/* Define to 1 if you have the <linux/btrfs_tree.h> header file. */
+#undef HAVE_LINUX_BTRFS_TREE_H
+
+/* Define to 1 if you have the <linux/magic.h> header file. */
+#undef HAVE_LINUX_MAGIC_H
+
+/* Define if struct lastlog has ll_host */
+#undef HAVE_LL_HOST
+
+/* Define to 1 if you have the <locale.h> header file. */
+#undef HAVE_LOCALE_H
+
+/* Define to 1 if you have the `lutimes' function. */
+#undef HAVE_LUTIMES
+
+/* Define to 1 if you have the `memset_s' function. */
+#undef HAVE_MEMSET_S
+
+/* Define to 1 if you have the <minix/config.h> header file. */
+#undef HAVE_MINIX_CONFIG_H
+
+/* Define to 1 if you have the `mkdir' function. */
+#undef HAVE_MKDIR
+
+/* Define to 1 if you have the <netdb.h> header file. */
+#undef HAVE_NETDB_H
+
+/* Define to 1 if you have the <paths.h> header file. */
+#undef HAVE_PATHS_H
+
+/* Define to 1 if you have the `putgrent' function. */
+#undef HAVE_PUTGRENT
+
+/* Define to 1 if you have the `putpwent' function. */
+#undef HAVE_PUTPWENT
+
+/* Define to 1 if you have the `putspent' function. */
+#undef HAVE_PUTSPENT
+
+/* Define to 1 if you have the `rename' function. */
+#undef HAVE_RENAME
+
+/* Define to 1 if you have the `rmdir' function. */
+#undef HAVE_RMDIR
+
+/* Define to 1 if you have the <rpc/key_prot.h> header file. */
+#undef HAVE_RPC_KEY_PROT_H
+
+/* Define to 1 if you have the <security/openpam.h> header file. */
+#undef HAVE_SECURITY_OPENPAM_H
+
+/* Define to 1 if you have the <security/pam_misc.h> header file. */
+#undef HAVE_SECURITY_PAM_MISC_H
+
+/* Define to 1 if you have the <selinux/selinux.h> header file. */
+#undef HAVE_SELINUX_SELINUX_H
+
+/* Define to 1 if you have the <semanage/semanage.h> header file. */
+#undef HAVE_SEMANAGE_SEMANAGE_H
+
+/* Define to 1 if you have the `setgroups' function. */
+#undef HAVE_SETGROUPS
+
+/* Define to 1 if you have the `sgetgrent' function. */
+#undef HAVE_SGETGRENT
+
+/* Define to 1 if you have the `sgetpwent' function. */
+#undef HAVE_SGETPWENT
+
+/* Define to 1 if you have the `sgetspent' function. */
+#undef HAVE_SGETSPENT
+
+/* Define to 1 if you have the <sgtty.h> header file. */
+#undef HAVE_SGTTY_H
+
+/* Have working shadow group support in libc */
+#undef HAVE_SHADOWGRP
+
+/* Define to 1 if you have the `snprintf' function. */
+#undef HAVE_SNPRINTF
+
+/* Define to 1 if stdbool.h conforms to C99. */
+#undef HAVE_STDBOOL_H
+
+/* Define to 1 if you have the <stdint.h> header file. */
+#undef HAVE_STDINT_H
+
+/* Define to 1 if you have the <stdio.h> header file. */
+#undef HAVE_STDIO_H
+
+/* Define to 1 if you have the <stdlib.h> header file. */
+#undef HAVE_STDLIB_H
+
+/* Define to 1 if you have the `strcasecmp' function. */
+#undef HAVE_STRCASECMP
+
+/* Define to 1 if you have the `strdup' function. */
+#undef HAVE_STRDUP
+
+/* Define to 1 if you have the `strerror' function. */
+#undef HAVE_STRERROR
+
+/* Define to 1 if you have the <strings.h> header file. */
+#undef HAVE_STRINGS_H
+
+/* Define to 1 if you have the <string.h> header file. */
+#undef HAVE_STRING_H
+
+/* Define to 1 if you have the `strstr' function. */
+#undef HAVE_STRSTR
+
+/* Define to 1 if `st_atim' is a member of `struct stat'. */
+#undef HAVE_STRUCT_STAT_ST_ATIM
+
+/* Define to 1 if `st_atimensec' is a member of `struct stat'. */
+#undef HAVE_STRUCT_STAT_ST_ATIMENSEC
+
+/* Define to 1 if `st_mtim' is a member of `struct stat'. */
+#undef HAVE_STRUCT_STAT_ST_MTIM
+
+/* Define to 1 if `st_mtimensec' is a member of `struct stat'. */
+#undef HAVE_STRUCT_STAT_ST_MTIMENSEC
+
+/* Define to 1 if `ut_addr' is a member of `struct utmpx'. */
+#undef HAVE_STRUCT_UTMPX_UT_ADDR
+
+/* Define to 1 if `ut_addr_v6' is a member of `struct utmpx'. */
+#undef HAVE_STRUCT_UTMPX_UT_ADDR_V6
+
+/* Define to 1 if `ut_host' is a member of `struct utmpx'. */
+#undef HAVE_STRUCT_UTMPX_UT_HOST
+
+/* Define to 1 if `ut_name' is a member of `struct utmpx'. */
+#undef HAVE_STRUCT_UTMPX_UT_NAME
+
+/* Define to 1 if `ut_syslen' is a member of `struct utmpx'. */
+#undef HAVE_STRUCT_UTMPX_UT_SYSLEN
+
+/* Define to 1 if `ut_time' is a member of `struct utmpx'. */
+#undef HAVE_STRUCT_UTMPX_UT_TIME
+
+/* Define to 1 if `ut_xtime' is a member of `struct utmpx'. */
+#undef HAVE_STRUCT_UTMPX_UT_XTIME
+
+/* Define to 1 if `ut_addr' is a member of `struct utmp'. */
+#undef HAVE_STRUCT_UTMP_UT_ADDR
+
+/* Define to 1 if `ut_addr_v6' is a member of `struct utmp'. */
+#undef HAVE_STRUCT_UTMP_UT_ADDR_V6
+
+/* Define to 1 if `ut_host' is a member of `struct utmp'. */
+#undef HAVE_STRUCT_UTMP_UT_HOST
+
+/* Define to 1 if `ut_id' is a member of `struct utmp'. */
+#undef HAVE_STRUCT_UTMP_UT_ID
+
+/* Define to 1 if `ut_name' is a member of `struct utmp'. */
+#undef HAVE_STRUCT_UTMP_UT_NAME
+
+/* Define to 1 if `ut_syslen' is a member of `struct utmp'. */
+#undef HAVE_STRUCT_UTMP_UT_SYSLEN
+
+/* Define to 1 if `ut_time' is a member of `struct utmp'. */
+#undef HAVE_STRUCT_UTMP_UT_TIME
+
+/* Define to 1 if `ut_tv' is a member of `struct utmp'. */
+#undef HAVE_STRUCT_UTMP_UT_TV
+
+/* Define to 1 if `ut_type' is a member of `struct utmp'. */
+#undef HAVE_STRUCT_UTMP_UT_TYPE
+
+/* Define to 1 if `ut_user' is a member of `struct utmp'. */
+#undef HAVE_STRUCT_UTMP_UT_USER
+
+/* Define to 1 if `ut_xtime' is a member of `struct utmp'. */
+#undef HAVE_STRUCT_UTMP_UT_XTIME
+
+/* Define to 1 if you have the <syslog.h> header file. */
+#undef HAVE_SYSLOG_H
+
+/* Define to 1 if you have the <sys/capability.h> header file. */
+#undef HAVE_SYS_CAPABILITY_H
+
+/* Define to 1 if you have the <sys/ioctl.h> header file. */
+#undef HAVE_SYS_IOCTL_H
+
+/* Define to 1 if you have the <sys/random.h> header file. */
+#undef HAVE_SYS_RANDOM_H
+
+/* Define to 1 if you have the <sys/resource.h> header file. */
+#undef HAVE_SYS_RESOURCE_H
+
+/* Define to 1 if you have the <sys/statfs.h> header file. */
+#undef HAVE_SYS_STATFS_H
+
+/* Define to 1 if you have the <sys/stat.h> header file. */
+#undef HAVE_SYS_STAT_H
+
+/* Define to 1 if you have the <sys/time.h> header file. */
+#undef HAVE_SYS_TIME_H
+
+/* Define to 1 if you have the <sys/types.h> header file. */
+#undef HAVE_SYS_TYPES_H
+
+/* Define to 1 if you have the <tcb.h> header file. */
+#undef HAVE_TCB_H
+
+/* Define to 1 if you have the <termios.h> header file. */
+#undef HAVE_TERMIOS_H
+
+/* Define to 1 if you have the <termio.h> header file. */
+#undef HAVE_TERMIO_H
+
+/* Define to 1 if you have the <ulimit.h> header file. */
+#undef HAVE_ULIMIT_H
+
+/* Define to 1 if you have the <unistd.h> header file. */
+#undef HAVE_UNISTD_H
+
+/* Define to 1 if you have the `updwtmp' function. */
+#undef HAVE_UPDWTMP
+
+/* Define to 1 if you have the `updwtmpx' function. */
+#undef HAVE_UPDWTMPX
+
+/* Define to 1 if you have the <utime.h> header file. */
+#undef HAVE_UTIME_H
+
+/* Define to 1 if `utime(file, NULL)' sets file's timestamp to the present. */
+#undef HAVE_UTIME_NULL
+
+/* Define to 1 if you have the <utmpx.h> header file. */
+#undef HAVE_UTMPX_H
+
+/* Define to 1 if you have the <utmp.h> header file. */
+#undef HAVE_UTMP_H
+
+/* Define to 1 if you have the <wchar.h> header file. */
+#undef HAVE_WCHAR_H
+
+/* Define to 1 if the system has the type `_Bool'. */
+#undef HAVE__BOOL
+
+/* Path for lastlog file. */
+#undef LASTLOG_FILE
+
+/* Define to the sub-directory where libtool stores uninstalled libraries. */
+#undef LT_OBJDIR
+
+/* Location of system mail spool directory. */
+#undef MAIL_SPOOL_DIR
+
+/* Name of user's mail spool file if stored in user's home directory. */
+#undef MAIL_SPOOL_FILE
+
+/* Name of package */
+#undef PACKAGE
+
+/* Define to the address where bug reports for this package should be sent. */
+#undef PACKAGE_BUGREPORT
+
+/* Define to the full name of this package. */
+#undef PACKAGE_NAME
+
+/* Define to the full name and version of this package. */
+#undef PACKAGE_STRING
+
+/* Define to the one symbol short name of this package. */
+#undef PACKAGE_TARNAME
+
+/* Define to the home page for this package. */
+#undef PACKAGE_URL
+
+/* Define to the version of this package. */
+#undef PACKAGE_VERSION
+
+/* Path to passwd program. */
+#undef PASSWD_PROGRAM
+
+/* Define if login should support the -r flag for rlogind. */
+#undef RLOGIN
+
+/* Define to the ruserok() "success" return value (0 or 1). */
+#undef RUSEROK
+
+/* Define to support the shadow group file. */
+#undef SHADOWGRP
+
+/* PAM conversation to use */
+#undef SHADOW_PAM_CONVERSATION
+
+/* The default shell. */
+#undef SHELL
+
+/* The size of `gid_t', as computed by sizeof. */
+#undef SIZEOF_GID_T
+
+/* The size of `uid_t', as computed by sizeof. */
+#undef SIZEOF_UID_T
+
+/* Define to support S/Key logins. */
+#undef SKEY
+
+/* Define to support newer BSD S/Key API */
+#undef SKEY_BSD_STYLE
+
+/* Define to 1 if all of the C90 standard headers exist (not just the ones
+   required in a freestanding environment). This macro is provided for
+   backward compatibility; new code need not use it. */
+#undef STDC_HEADERS
+
+/* Define to support /etc/suauth su access control. */
+#undef SU_ACCESS
+
+/* Define to 1 if your <sys/time.h> declares `struct tm'. */
+#undef TM_IN_SYS_TIME
+
+/* Define to allow the bcrypt password encryption algorithm */
+#undef USE_BCRYPT
+
+/* Define to support flushing of nscd caches */
+#undef USE_NSCD
+
+/* Define to support Pluggable Authentication Modules */
+#undef USE_PAM
+
+/* Define to allow the SHA256 and SHA512 password encryption algorithms */
+#undef USE_SHA_CRYPT
+
+/* Define to support flushing of sssd caches */
+#undef USE_SSSD
+
+/* Define to use syslog(). */
+#undef USE_SYSLOG
+
+/* Enable extensions on AIX 3, Interix.  */
+#ifndef _ALL_SOURCE
+# undef _ALL_SOURCE
+#endif
+/* Enable general extensions on macOS.  */
+#ifndef _DARWIN_C_SOURCE
+# undef _DARWIN_C_SOURCE
+#endif
+/* Enable general extensions on Solaris.  */
+#ifndef __EXTENSIONS__
+# undef __EXTENSIONS__
+#endif
+/* Enable GNU extensions on systems that have them.  */
+#ifndef _GNU_SOURCE
+# undef _GNU_SOURCE
+#endif
+/* Enable X/Open compliant socket functions that do not require linking
+   with -lxnet on HP-UX 11.11.  */
+#ifndef _HPUX_ALT_XOPEN_SOCKET_API
+# undef _HPUX_ALT_XOPEN_SOCKET_API
+#endif
+/* Identify the host operating system as Minix.
+   This macro does not affect the system headers' behavior.
+   A future release of Autoconf may stop defining this macro.  */
+#ifndef _MINIX
+# undef _MINIX
+#endif
+/* Enable general extensions on NetBSD.
+   Enable NetBSD compatibility extensions on Minix.  */
+#ifndef _NETBSD_SOURCE
+# undef _NETBSD_SOURCE
+#endif
+/* Enable OpenBSD compatibility extensions on NetBSD.
+   Oddly enough, this does nothing on OpenBSD.  */
+#ifndef _OPENBSD_SOURCE
+# undef _OPENBSD_SOURCE
+#endif
+/* Define to 1 if needed for POSIX-compatible behavior.  */
+#ifndef _POSIX_SOURCE
+# undef _POSIX_SOURCE
+#endif
+/* Define to 2 if needed for POSIX-compatible behavior.  */
+#ifndef _POSIX_1_SOURCE
+# undef _POSIX_1_SOURCE
+#endif
+/* Enable POSIX-compatible threading on Solaris.  */
+#ifndef _POSIX_PTHREAD_SEMANTICS
+# undef _POSIX_PTHREAD_SEMANTICS
+#endif
+/* Enable extensions specified by ISO/IEC TS 18661-5:2014.  */
+#ifndef __STDC_WANT_IEC_60559_ATTRIBS_EXT__
+# undef __STDC_WANT_IEC_60559_ATTRIBS_EXT__
+#endif
+/* Enable extensions specified by ISO/IEC TS 18661-1:2014.  */
+#ifndef __STDC_WANT_IEC_60559_BFP_EXT__
+# undef __STDC_WANT_IEC_60559_BFP_EXT__
+#endif
+/* Enable extensions specified by ISO/IEC TS 18661-2:2015.  */
+#ifndef __STDC_WANT_IEC_60559_DFP_EXT__
+# undef __STDC_WANT_IEC_60559_DFP_EXT__
+#endif
+/* Enable extensions specified by ISO/IEC TS 18661-4:2015.  */
+#ifndef __STDC_WANT_IEC_60559_FUNCS_EXT__
+# undef __STDC_WANT_IEC_60559_FUNCS_EXT__
+#endif
+/* Enable extensions specified by ISO/IEC TS 18661-3:2015.  */
+#ifndef __STDC_WANT_IEC_60559_TYPES_EXT__
+# undef __STDC_WANT_IEC_60559_TYPES_EXT__
+#endif
+/* Enable extensions specified by ISO/IEC TR 24731-2:2010.  */
+#ifndef __STDC_WANT_LIB_EXT2__
+# undef __STDC_WANT_LIB_EXT2__
+#endif
+/* Enable extensions specified by ISO/IEC 24747:2009.  */
+#ifndef __STDC_WANT_MATH_SPEC_FUNCS__
+# undef __STDC_WANT_MATH_SPEC_FUNCS__
+#endif
+/* Enable extensions on HP NonStop.  */
+#ifndef _TANDEM_SOURCE
+# undef _TANDEM_SOURCE
+#endif
+/* Enable X/Open extensions.  Define to 500 only if necessary
+   to make mbstate_t available.  */
+#ifndef _XOPEN_SOURCE
+# undef _XOPEN_SOURCE
+#endif
+
+
+/* Define if utmpx should be used */
+#undef USE_UTMPX
+
+/* Define to allow the yescrypt password encryption algorithm */
+#undef USE_YESCRYPT
+
+/* Version number of package */
+#undef VERSION
+
+/* Build shadow with ACL support */
+#undef WITH_ACL
+
+/* Build shadow with Extended Attributes support */
+#undef WITH_ATTR
+
+/* Define if you want to enable Audit messages */
+#undef WITH_AUDIT
+
+/* Build shadow with BtrFS support */
+#undef WITH_BTRFS
+
+/* Build shadow with SELinux support */
+#undef WITH_SELINUX
+
+/* Build with su */
+#undef WITH_SU
+
+/* Build shadow with tcb support (incomplete) */
+#undef WITH_TCB
+
+/* Number of bits in a file offset, on hosts where this is settable. */
+#undef _FILE_OFFSET_BITS
+
+/* Define for large files, on AIX-style hosts. */
+#undef _LARGE_FILES
+
+/* Path for utmp file. */
+#undef _UTMP_FILE
+
+/* Path for wtmp file. */
+#undef _WTMP_FILE
+
+/* Define to `int' if <sys/types.h> doesn't define. */
+#undef gid_t
+
+/* Define to `int' if <sys/types.h> doesn't define. */
+#undef uid_t

config.rpath

@@ -0,0 +1,690 @@
+#! /bin/sh
+# Output a system dependent set of variables, describing how to set the
+# run time search path of shared libraries in an executable.
+#
+#   Copyright 1996-2014 Free Software Foundation, Inc.
+#   Taken from GNU libtool, 2001
+#   Originally by Gordon Matzigkeit <gord@gnu.ai.mit.edu>, 1996
+#
+#   This file is free software; the Free Software Foundation gives
+#   unlimited permission to copy and/or distribute it, with or without
+#   modifications, as long as this notice is preserved.
+#
+# The first argument passed to this file is the canonical host specification,
+#    CPU_TYPE-MANUFACTURER-OPERATING_SYSTEM
+# or
+#    CPU_TYPE-MANUFACTURER-KERNEL-OPERATING_SYSTEM
+# The environment variables CC, GCC, LDFLAGS, LD, with_gnu_ld
+# should be set by the caller.
+#
+# The set of defined variables is at the end of this script.
+
+# Known limitations:
+# - On IRIX 6.5 with CC="cc", the run time search patch must not be longer
+#   than 256 bytes, otherwise the compiler driver will dump core. The only
+#   known workaround is to choose shorter directory names for the build
+#   directory and/or the installation directory.
+
+# All known linkers require a '.a' archive for static linking (except MSVC,
+# which needs '.lib').
+libext=a
+shrext=.so
+
+host="$1"
+host_cpu=`echo "$host" | sed 's/^\([^-]*\)-\([^-]*\)-\(.*\)$/\1/'`
+host_vendor=`echo "$host" | sed 's/^\([^-]*\)-\([^-]*\)-\(.*\)$/\2/'`
+host_os=`echo "$host" | sed 's/^\([^-]*\)-\([^-]*\)-\(.*\)$/\3/'`
+
+# Code taken from libtool.m4's _LT_CC_BASENAME.
+
+for cc_temp in $CC""; do
+  case $cc_temp in
+    compile | *[\\/]compile | ccache | *[\\/]ccache ) ;;
+    distcc | *[\\/]distcc | purify | *[\\/]purify ) ;;
+    \-*) ;;
+    *) break;;
+  esac
+done
+cc_basename=`echo "$cc_temp" | sed -e 's%^.*/%%'`
+
+# Code taken from libtool.m4's _LT_COMPILER_PIC.
+
+wl=
+if test "$GCC" = yes; then
+  wl='-Wl,'
+else
+  case "$host_os" in
+    aix*)
+      wl='-Wl,'
+      ;;
+    mingw* | cygwin* | pw32* | os2* | cegcc*)
+      ;;
+    hpux9* | hpux10* | hpux11*)
+      wl='-Wl,'
+      ;;
+    irix5* | irix6* | nonstopux*)
+      wl='-Wl,'
+      ;;
+    linux* | k*bsd*-gnu | kopensolaris*-gnu)
+      case $cc_basename in
+        ecc*)
+          wl='-Wl,'
+          ;;
+        icc* | ifort*)
+          wl='-Wl,'
+          ;;
+        lf95*)
+          wl='-Wl,'
+          ;;
+        nagfor*)
+          wl='-Wl,-Wl,,'
+          ;;
+        pgcc* | pgf77* | pgf90* | pgf95* | pgfortran*)
+          wl='-Wl,'
+          ;;
+        ccc*)
+          wl='-Wl,'
+          ;;
+        xl* | bgxl* | bgf* | mpixl*)
+          wl='-Wl,'
+          ;;
+        como)
+          wl='-lopt='
+          ;;
+        *)
+          case `$CC -V 2>&1 | sed 5q` in
+            *Sun\ F* | *Sun*Fortran*)
+              wl=
+              ;;
+            *Sun\ C*)
+              wl='-Wl,'
+              ;;
+          esac
+          ;;
+      esac
+      ;;
+    newsos6)
+      ;;
+    *nto* | *qnx*)
+      ;;
+    osf3* | osf4* | osf5*)
+      wl='-Wl,'
+      ;;
+    rdos*)
+      ;;
+    solaris*)
+      case $cc_basename in
+        f77* | f90* | f95* | sunf77* | sunf90* | sunf95*)
+          wl='-Qoption ld '
+          ;;
+        *)
+          wl='-Wl,'
+          ;;
+      esac
+      ;;
+    sunos4*)
+      wl='-Qoption ld '
+      ;;
+    sysv4 | sysv4.2uw2* | sysv4.3*)
+      wl='-Wl,'
+      ;;
+    sysv4*MP*)
+      ;;
+    sysv5* | unixware* | sco3.2v5* | sco5v6* | OpenUNIX*)
+      wl='-Wl,'
+      ;;
+    unicos*)
+      wl='-Wl,'
+      ;;
+    uts4*)
+      ;;
+  esac
+fi
+
+# Code taken from libtool.m4's _LT_LINKER_SHLIBS.
+
+hardcode_libdir_flag_spec=
+hardcode_libdir_separator=
+hardcode_direct=no
+hardcode_minus_L=no
+
+case "$host_os" in
+  cygwin* | mingw* | pw32* | cegcc*)
+    # FIXME: the MSVC++ port hasn't been tested in a loooong time
+    # When not using gcc, we currently assume that we are using
+    # Microsoft Visual C++.
+    if test "$GCC" != yes; then
+      with_gnu_ld=no
+    fi
+    ;;
+  interix*)
+    # we just hope/assume this is gcc and not c89 (= MSVC++)
+    with_gnu_ld=yes
+    ;;
+  openbsd*)
+    with_gnu_ld=no
+    ;;
+esac
+
+ld_shlibs=yes
+if test "$with_gnu_ld" = yes; then
+  # Set some defaults for GNU ld with shared library support. These
+  # are reset later if shared libraries are not supported. Putting them
+  # here allows them to be overridden if necessary.
+  # Unlike libtool, we use -rpath here, not --rpath, since the documented
+  # option of GNU ld is called -rpath, not --rpath.
+  hardcode_libdir_flag_spec='${wl}-rpath ${wl}$libdir'
+  case "$host_os" in
+    aix[3-9]*)
+      # On AIX/PPC, the GNU linker is very broken
+      if test "$host_cpu" != ia64; then
+        ld_shlibs=no
+      fi
+      ;;
+    amigaos*)
+      case "$host_cpu" in
+        powerpc)
+          ;;
+        m68k)
+          hardcode_libdir_flag_spec='-L$libdir'
+          hardcode_minus_L=yes
+          ;;
+      esac
+      ;;
+    beos*)
+      if $LD --help 2>&1 | grep ': supported targets:.* elf' > /dev/null; then
+        :
+      else
+        ld_shlibs=no
+      fi
+      ;;
+    cygwin* | mingw* | pw32* | cegcc*)
+      # hardcode_libdir_flag_spec is actually meaningless, as there is
+      # no search path for DLLs.
+      hardcode_libdir_flag_spec='-L$libdir'
+      if $LD --help 2>&1 | grep 'auto-import' > /dev/null; then
+        :
+      else
+        ld_shlibs=no
+      fi
+      ;;
+    haiku*)
+      ;;
+    interix[3-9]*)
+      hardcode_direct=no
+      hardcode_libdir_flag_spec='${wl}-rpath,$libdir'
+      ;;
+    gnu* | linux* | tpf* | k*bsd*-gnu | kopensolaris*-gnu)
+      if $LD --help 2>&1 | grep ': supported targets:.* elf' > /dev/null; then
+        :
+      else
+        ld_shlibs=no
+      fi
+      ;;
+    netbsd*)
+      ;;
+    solaris*)
+      if $LD -v 2>&1 | grep 'BFD 2\.8' > /dev/null; then
+        ld_shlibs=no
+      elif $LD --help 2>&1 | grep ': supported targets:.* elf' > /dev/null; then
+        :
+      else
+        ld_shlibs=no
+      fi
+      ;;
+    sysv5* | sco3.2v5* | sco5v6* | unixware* | OpenUNIX*)
+      case `$LD -v 2>&1` in
+        *\ [01].* | *\ 2.[0-9].* | *\ 2.1[0-5].*)
+          ld_shlibs=no
+          ;;
+        *)
+          if $LD --help 2>&1 | grep ': supported targets:.* elf' > /dev/null; then
+            hardcode_libdir_flag_spec='`test -z "$SCOABSPATH" && echo ${wl}-rpath,$libdir`'
+          else
+            ld_shlibs=no
+          fi
+          ;;
+      esac
+      ;;
+    sunos4*)
+      hardcode_direct=yes
+      ;;
+    *)
+      if $LD --help 2>&1 | grep ': supported targets:.* elf' > /dev/null; then
+        :
+      else
+        ld_shlibs=no
+      fi
+      ;;
+  esac
+  if test "$ld_shlibs" = no; then
+    hardcode_libdir_flag_spec=
+  fi
+else
+  case "$host_os" in
+    aix3*)
+      # Note: this linker hardcodes the directories in LIBPATH if there
+      # are no directories specified by -L.
+      hardcode_minus_L=yes
+      if test "$GCC" = yes; then
+        # Neither direct hardcoding nor static linking is supported with a
+        # broken collect2.
+        hardcode_direct=unsupported
+      fi
+      ;;
+    aix[4-9]*)
+      if test "$host_cpu" = ia64; then
+        # On IA64, the linker does run time linking by default, so we don't
+        # have to do anything special.
+        aix_use_runtimelinking=no
+      else
+        aix_use_runtimelinking=no
+        # Test if we are trying to use run time linking or normal
+        # AIX style linking. If -brtl is somewhere in LDFLAGS, we
+        # need to do runtime linking.
+        case $host_os in aix4.[23]|aix4.[23].*|aix[5-9]*)
+          for ld_flag in $LDFLAGS; do
+            if (test $ld_flag = "-brtl" || test $ld_flag = "-Wl,-brtl"); then
+              aix_use_runtimelinking=yes
+              break
+            fi
+          done
+          ;;
+        esac
+      fi
+      hardcode_direct=yes
+      hardcode_libdir_separator=':'
+      if test "$GCC" = yes; then
+        case $host_os in aix4.[012]|aix4.[012].*)
+          collect2name=`${CC} -print-prog-name=collect2`
+          if test -f "$collect2name" && \
+            strings "$collect2name" | grep resolve_lib_name >/dev/null
+          then
+            # We have reworked collect2
+            :
+          else
+            # We have old collect2
+            hardcode_direct=unsupported
+            hardcode_minus_L=yes
+            hardcode_libdir_flag_spec='-L$libdir'
+            hardcode_libdir_separator=
+          fi
+          ;;
+        esac
+      fi
+      # Begin _LT_AC_SYS_LIBPATH_AIX.
+      echo 'int main () { return 0; }' > conftest.c
+      ${CC} ${LDFLAGS} conftest.c -o conftest
+      aix_libpath=`dump -H conftest 2>/dev/null | sed -n -e '/Import File Strings/,/^$/ { /^0/ { s/^0  *\(.*\)$/\1/; p; }
+}'`
+      if test -z "$aix_libpath"; then
+        aix_libpath=`dump -HX64 conftest 2>/dev/null | sed -n -e '/Import File Strings/,/^$/ { /^0/ { s/^0  *\(.*\)$/\1/; p; }
+}'`
+      fi
+      if test -z "$aix_libpath"; then
+        aix_libpath="/usr/lib:/lib"
+      fi
+      rm -f conftest.c conftest
+      # End _LT_AC_SYS_LIBPATH_AIX.
+      if test "$aix_use_runtimelinking" = yes; then
+        hardcode_libdir_flag_spec='${wl}-blibpath:$libdir:'"$aix_libpath"
+      else
+        if test "$host_cpu" = ia64; then
+          hardcode_libdir_flag_spec='${wl}-R $libdir:/usr/lib:/lib'
+        else
+          hardcode_libdir_flag_spec='${wl}-blibpath:$libdir:'"$aix_libpath"
+        fi
+      fi
+      ;;
+    amigaos*)
+      case "$host_cpu" in
+        powerpc)
+          ;;
+        m68k)
+          hardcode_libdir_flag_spec='-L$libdir'
+          hardcode_minus_L=yes
+          ;;
+      esac
+      ;;
+    bsdi[45]*)
+      ;;
+    cygwin* | mingw* | pw32* | cegcc*)
+      # When not using gcc, we currently assume that we are using
+      # Microsoft Visual C++.
+      # hardcode_libdir_flag_spec is actually meaningless, as there is
+      # no search path for DLLs.
+      hardcode_libdir_flag_spec=' '
+      libext=lib
+      ;;
+    darwin* | rhapsody*)
+      hardcode_direct=no
+      if { case $cc_basename in ifort*) true;; *) test "$GCC" = yes;; esac; }; then
+        :
+      else
+        ld_shlibs=no
+      fi
+      ;;
+    dgux*)
+      hardcode_libdir_flag_spec='-L$libdir'
+      ;;
+    freebsd2.2*)
+      hardcode_libdir_flag_spec='-R$libdir'
+      hardcode_direct=yes
+      ;;
+    freebsd2*)
+      hardcode_direct=yes
+      hardcode_minus_L=yes
+      ;;
+    freebsd* | dragonfly*)
+      hardcode_libdir_flag_spec='-R$libdir'
+      hardcode_direct=yes
+      ;;
+    hpux9*)
+      hardcode_libdir_flag_spec='${wl}+b ${wl}$libdir'
+      hardcode_libdir_separator=:
+      hardcode_direct=yes
+      # hardcode_minus_L: Not really in the search PATH,
+      # but as the default location of the library.
+      hardcode_minus_L=yes
+      ;;
+    hpux10*)
+      if test "$with_gnu_ld" = no; then
+        hardcode_libdir_flag_spec='${wl}+b ${wl}$libdir'
+        hardcode_libdir_separator=:
+        hardcode_direct=yes
+        # hardcode_minus_L: Not really in the search PATH,
+        # but as the default location of the library.
+        hardcode_minus_L=yes
+      fi
+      ;;
+    hpux11*)
+      if test "$with_gnu_ld" = no; then
+        hardcode_libdir_flag_spec='${wl}+b ${wl}$libdir'
+        hardcode_libdir_separator=:
+        case $host_cpu in
+          hppa*64*|ia64*)
+            hardcode_direct=no
+            ;;
+          *)
+            hardcode_direct=yes
+            # hardcode_minus_L: Not really in the search PATH,
+            # but as the default location of the library.
+            hardcode_minus_L=yes
+            ;;
+        esac
+      fi
+      ;;
+    irix5* | irix6* | nonstopux*)
+      hardcode_libdir_flag_spec='${wl}-rpath ${wl}$libdir'
+      hardcode_libdir_separator=:
+      ;;
+    netbsd*)
+      hardcode_libdir_flag_spec='-R$libdir'
+      hardcode_direct=yes
+      ;;
+    newsos6)
+      hardcode_direct=yes
+      hardcode_libdir_flag_spec='${wl}-rpath ${wl}$libdir'
+      hardcode_libdir_separator=:
+      ;;
+    *nto* | *qnx*)
+      ;;
+    openbsd*)
+      if test -f /usr/libexec/ld.so; then
+        hardcode_direct=yes
+        if test -z "`echo __ELF__ | $CC -E - | grep __ELF__`" || test "$host_os-$host_cpu" = "openbsd2.8-powerpc"; then
+          hardcode_libdir_flag_spec='${wl}-rpath,$libdir'
+        else
+          case "$host_os" in
+            openbsd[01].* | openbsd2.[0-7] | openbsd2.[0-7].*)
+              hardcode_libdir_flag_spec='-R$libdir'
+              ;;
+            *)
+              hardcode_libdir_flag_spec='${wl}-rpath,$libdir'
+              ;;
+          esac
+        fi
+      else
+        ld_shlibs=no
+      fi
+      ;;
+    os2*)
+      hardcode_libdir_flag_spec='-L$libdir'
+      hardcode_minus_L=yes
+      ;;
+    osf3*)
+      hardcode_libdir_flag_spec='${wl}-rpath ${wl}$libdir'
+      hardcode_libdir_separator=:
+      ;;
+    osf4* | osf5*)
+      if test "$GCC" = yes; then
+        hardcode_libdir_flag_spec='${wl}-rpath ${wl}$libdir'
+      else
+        # Both cc and cxx compiler support -rpath directly
+        hardcode_libdir_flag_spec='-rpath $libdir'
+      fi
+      hardcode_libdir_separator=:
+      ;;
+    solaris*)
+      hardcode_libdir_flag_spec='-R$libdir'
+      ;;
+    sunos4*)
+      hardcode_libdir_flag_spec='-L$libdir'
+      hardcode_direct=yes
+      hardcode_minus_L=yes
+      ;;
+    sysv4)
+      case $host_vendor in
+        sni)
+          hardcode_direct=yes # is this really true???
+          ;;
+        siemens)
+          hardcode_direct=no
+          ;;
+        motorola)
+          hardcode_direct=no #Motorola manual says yes, but my tests say they lie
+          ;;
+      esac
+      ;;
+    sysv4.3*)
+      ;;
+    sysv4*MP*)
+      if test -d /usr/nec; then
+        ld_shlibs=yes
+      fi
+      ;;
+    sysv4*uw2* | sysv5OpenUNIX* | sysv5UnixWare7.[01].[10]* | unixware7* | sco3.2v5.0.[024]*)
+      ;;
+    sysv5* | sco3.2v5* | sco5v6*)
+      hardcode_libdir_flag_spec='`test -z "$SCOABSPATH" && echo ${wl}-R,$libdir`'
+      hardcode_libdir_separator=':'
+      ;;
+    uts4*)
+      hardcode_libdir_flag_spec='-L$libdir'
+      ;;
+    *)
+      ld_shlibs=no
+      ;;
+  esac
+fi
+
+# Check dynamic linker characteristics
+# Code taken from libtool.m4's _LT_SYS_DYNAMIC_LINKER.
+# Unlike libtool.m4, here we don't care about _all_ names of the library, but
+# only about the one the linker finds when passed -lNAME. This is the last
+# element of library_names_spec in libtool.m4, or possibly two of them if the
+# linker has special search rules.
+library_names_spec=      # the last element of library_names_spec in libtool.m4
+libname_spec='lib$name'
+case "$host_os" in
+  aix3*)
+    library_names_spec='$libname.a'
+    ;;
+  aix[4-9]*)
+    library_names_spec='$libname$shrext'
+    ;;
+  amigaos*)
+    case "$host_cpu" in
+      powerpc*)
+        library_names_spec='$libname$shrext' ;;
+      m68k)
+        library_names_spec='$libname.a' ;;
+    esac
+    ;;
+  beos*)
+    library_names_spec='$libname$shrext'
+    ;;
+  bsdi[45]*)
+    library_names_spec='$libname$shrext'
+    ;;
+  cygwin* | mingw* | pw32* | cegcc*)
+    shrext=.dll
+    library_names_spec='$libname.dll.a $libname.lib'
+    ;;
+  darwin* | rhapsody*)
+    shrext=.dylib
+    library_names_spec='$libname$shrext'
+    ;;
+  dgux*)
+    library_names_spec='$libname$shrext'
+    ;;
+  freebsd* | dragonfly*)
+    case "$host_os" in
+      freebsd[123]*)
+        library_names_spec='$libname$shrext$versuffix' ;;
+      *)
+        library_names_spec='$libname$shrext' ;;
+    esac
+    ;;
+  gnu*)
+    library_names_spec='$libname$shrext'
+    ;;
+  haiku*)
+    library_names_spec='$libname$shrext'
+    ;;
+  hpux9* | hpux10* | hpux11*)
+    case $host_cpu in
+      ia64*)
+        shrext=.so
+        ;;
+      hppa*64*)
+        shrext=.sl
+        ;;
+      *)
+        shrext=.sl
+        ;;
+    esac
+    library_names_spec='$libname$shrext'
+    ;;
+  interix[3-9]*)
+    library_names_spec='$libname$shrext'
+    ;;
+  irix5* | irix6* | nonstopux*)
+    library_names_spec='$libname$shrext'
+    case "$host_os" in
+      irix5* | nonstopux*)
+        libsuff= shlibsuff=
+        ;;
+      *)
+        case $LD in
+          *-32|*"-32 "|*-melf32bsmip|*"-melf32bsmip ") libsuff= shlibsuff= ;;
+          *-n32|*"-n32 "|*-melf32bmipn32|*"-melf32bmipn32 ") libsuff=32 shlibsuff=N32 ;;
+          *-64|*"-64 "|*-melf64bmip|*"-melf64bmip ") libsuff=64 shlibsuff=64 ;;
+          *) libsuff= shlibsuff= ;;
+        esac
+        ;;
+    esac
+    ;;
+  linux*oldld* | linux*aout* | linux*coff*)
+    ;;
+  linux* | k*bsd*-gnu | kopensolaris*-gnu)
+    library_names_spec='$libname$shrext'
+    ;;
+  knetbsd*-gnu)
+    library_names_spec='$libname$shrext'
+    ;;
+  netbsd*)
+    library_names_spec='$libname$shrext'
+    ;;
+  newsos6)
+    library_names_spec='$libname$shrext'
+    ;;
+  *nto* | *qnx*)
+    library_names_spec='$libname$shrext'
+    ;;
+  openbsd*)
+    library_names_spec='$libname$shrext$versuffix'
+    ;;
+  os2*)
+    libname_spec='$name'
+    shrext=.dll
+    library_names_spec='$libname.a'
+    ;;
+  osf3* | osf4* | osf5*)
+    library_names_spec='$libname$shrext'
+    ;;
+  rdos*)
+    ;;
+  solaris*)
+    library_names_spec='$libname$shrext'
+    ;;
+  sunos4*)
+    library_names_spec='$libname$shrext$versuffix'
+    ;;
+  sysv4 | sysv4.3*)
+    library_names_spec='$libname$shrext'
+    ;;
+  sysv4*MP*)
+    library_names_spec='$libname$shrext'
+    ;;
+  sysv5* | sco3.2v5* | sco5v6* | unixware* | OpenUNIX* | sysv4*uw2*)
+    library_names_spec='$libname$shrext'
+    ;;
+  tpf*)
+    library_names_spec='$libname$shrext'
+    ;;
+  uts4*)
+    library_names_spec='$libname$shrext'
+    ;;
+esac
+
+sed_quote_subst='s/\(["`$\\]\)/\\\1/g'
+escaped_wl=`echo "X$wl" | sed -e 's/^X//' -e "$sed_quote_subst"`
+shlibext=`echo "$shrext" | sed -e 's,^\.,,'`
+escaped_libname_spec=`echo "X$libname_spec" | sed -e 's/^X//' -e "$sed_quote_subst"`
+escaped_library_names_spec=`echo "X$library_names_spec" | sed -e 's/^X//' -e "$sed_quote_subst"`
+escaped_hardcode_libdir_flag_spec=`echo "X$hardcode_libdir_flag_spec" | sed -e 's/^X//' -e "$sed_quote_subst"`
+
+LC_ALL=C sed -e 's/^\([a-zA-Z0-9_]*\)=/acl_cv_\1=/' <<EOF
+
+# How to pass a linker flag through the compiler.
+wl="$escaped_wl"
+
+# Static library suffix (normally "a").
+libext="$libext"
+
+# Shared library suffix (normally "so").
+shlibext="$shlibext"
+
+# Format of library name prefix.
+libname_spec="$escaped_libname_spec"
+
+# Library names that the linker finds when passed -lNAME.
+library_names_spec="$escaped_library_names_spec"
+
+# Flag to hardcode \$libdir into a binary during linking.
+# This must work even if \$libdir does not exist.
+hardcode_libdir_flag_spec="$escaped_hardcode_libdir_flag_spec"
+
+# Whether we need a single -rpath flag with a separated argument.
+hardcode_libdir_separator="$hardcode_libdir_separator"
+
+# Set to yes if using DIR/libNAME.so during linking hardcodes DIR into the
+# resulting binary.
+hardcode_direct="$hardcode_direct"
+
+# Set to yes if using the -LDIR flag during linking hardcodes DIR into the
+# resulting binary.
+hardcode_minus_L="$hardcode_minus_L"
+
+EOF

configure.ac

@@ -0,0 +1,762 @@
+dnl Process this file with autoconf to produce a configure script.
+AC_PREREQ([2.69])
+m4_define([libsubid_abi_major], 4)
+m4_define([libsubid_abi_minor], 0)
+m4_define([libsubid_abi_micro], 0)
+m4_define([libsubid_abi], [libsubid_abi_major.libsubid_abi_minor.libsubid_abi_micro])
+AC_INIT([shadow], [4.12.3], [pkg-shadow-devel@lists.alioth.debian.org], [],
+	[https://github.com/shadow-maint/shadow])
+AM_INIT_AUTOMAKE([1.11 foreign dist-xz])
+AC_CONFIG_MACRO_DIRS([m4])
+AM_SILENT_RULES([yes])
+AC_CONFIG_HEADERS([config.h])
+
+AC_SUBST([LIBSUBID_ABI_MAJOR], [libsubid_abi_major])
+AC_SUBST([LIBSUBID_ABI_MINOR], [libsubid_abi_minor])
+AC_SUBST([LIBSUBID_ABI_MICRO], [libsubid_abi_micro])
+AC_SUBST([LIBSUBID_ABI], [libsubid_abi])
+
+dnl Some hacks...
+test "$prefix" = "NONE" && prefix="/usr"
+test "$prefix" = "/usr" && exec_prefix=""
+
+AC_USE_SYSTEM_EXTENSIONS
+
+AC_ENABLE_STATIC
+AC_ENABLE_SHARED
+
+AM_MAINTAINER_MODE
+
+dnl Checks for programs.
+AC_PROG_CC
+AC_PROG_LN_S
+AC_PROG_YACC
+LT_INIT
+
+dnl Checks for libraries.
+
+dnl Checks for header files.
+AC_HEADER_STDBOOL
+
+AC_CHECK_HEADERS(crypt.h errno.h fcntl.h limits.h unistd.h sys/time.h utmp.h \
+	utmpx.h termios.h termio.h sgtty.h sys/ioctl.h syslog.h paths.h \
+	utime.h ulimit.h sys/capability.h sys/random.h sys/resource.h \
+	gshadow.h lastlog.h locale.h rpc/key_prot.h netdb.h acl/libacl.h \
+	attr/libattr.h attr/error_context.h)
+
+dnl shadow now uses the libc's shadow implementation
+AC_CHECK_HEADER([shadow.h],,[AC_MSG_ERROR([You need a libc with shadow.h])])
+
+AC_CHECK_FUNCS(arc4random_buf l64a fchmod fchown fsync futimes \
+	getentropy getrandom getspnam getusershell \
+	getutent initgroups lckpwdf lutimes \
+	setgroups updwtmp updwtmpx innetgr getpwnam_r \
+	getpwuid_r getgrnam_r getgrgid_r getspnam_r \
+	memset_s explicit_bzero)
+AC_SYS_LARGEFILE
+
+dnl Checks for typedefs, structures, and compiler characteristics.
+AC_CHECK_MEMBERS([struct stat.st_atim])
+AC_CHECK_MEMBERS([struct stat.st_atimensec])
+AC_CHECK_MEMBERS([struct stat.st_mtim])
+AC_CHECK_MEMBERS([struct stat.st_mtimensec])
+AC_STRUCT_TM
+
+AC_CHECK_MEMBERS([struct utmp.ut_type,
+                  struct utmp.ut_id,
+                  struct utmp.ut_name,
+                  struct utmp.ut_user,
+                  struct utmp.ut_host,
+                  struct utmp.ut_syslen,
+                  struct utmp.ut_addr,
+                  struct utmp.ut_addr_v6,
+                  struct utmp.ut_time,
+                  struct utmp.ut_xtime,
+                  struct utmp.ut_tv],,,[[#include <utmp.h>]])
+
+AC_CHECK_MEMBERS([struct utmpx.ut_name,
+                  struct utmpx.ut_host,
+                  struct utmpx.ut_syslen,
+                  struct utmpx.ut_addr,
+                  struct utmpx.ut_addr_v6,
+                  struct utmpx.ut_time,
+                  struct utmpx.ut_xtime],,,[[#include <utmpx.h>]])
+
+if test "$ac_cv_header_lastlog_h" = "yes"; then
+	AC_CACHE_CHECK(for ll_host in struct lastlog,
+		ac_cv_struct_lastlog_ll_host,
+		AC_COMPILE_IFELSE([AC_LANG_PROGRAM([#include <lastlog.h>],
+					[struct lastlog ll; char *cp = ll.ll_host;]
+				)],
+			[ac_cv_struct_lastlog_ll_host=yes],
+			[ac_cv_struct_lastlog_ll_host=no]
+		)
+	)
+
+	if test "$ac_cv_struct_lastlog_ll_host" = "yes"; then
+		AC_DEFINE(HAVE_LL_HOST, 1,
+			[Define if struct lastlog has ll_host])
+	fi
+fi
+
+dnl Checks for library functions.
+AC_TYPE_GETGROUPS
+AC_FUNC_UTIME_NULL
+AC_REPLACE_FUNCS(mkdir putgrent putpwent putspent rename rmdir)
+AC_REPLACE_FUNCS(sgetgrent sgetpwent sgetspent)
+AC_REPLACE_FUNCS(snprintf strcasecmp strdup strerror strstr)
+
+AC_CHECK_FUNC(setpgrp)
+AC_CHECK_FUNC(secure_getenv, [AC_DEFINE(HAS_SECURE_GETENV,
+                                        1,
+                                        [Defined to 1 if you have the declaration of 'secure_getenv'])])
+
+if test "$ac_cv_header_shadow_h" = "yes"; then
+	AC_CACHE_CHECK(for working shadow group support,
+		ac_cv_libc_shadowgrp,
+		AC_RUN_IFELSE([AC_LANG_SOURCE([
+				#include <shadow.h>
+				main()
+				{
+					struct sgrp *sg = sgetsgent("test:x::");
+					/* NYS libc on Red Hat 3.0.3 has broken shadow group support */
+					return !sg || !sg->sg_adm || !sg->sg_mem;
+				}]
+			)],
+			[ac_cv_libc_shadowgrp=yes],
+			[ac_cv_libc_shadowgrp=no],
+			[ac_cv_libc_shadowgrp=no]
+		)
+	)
+
+	if test "$ac_cv_libc_shadowgrp" = "yes"; then
+		AC_DEFINE(HAVE_SHADOWGRP, 1, [Have working shadow group support in libc])
+	fi
+fi
+
+AC_CACHE_CHECK([location of shared mail directory], shadow_cv_maildir,
+[for shadow_cv_maildir in /var/mail /var/spool/mail /usr/spool/mail /usr/mail none; do
+	if test -d $shadow_cv_maildir; then
+		break
+	fi
+done])
+if test $shadow_cv_maildir != none; then
+	AC_DEFINE_UNQUOTED(MAIL_SPOOL_DIR, "$shadow_cv_maildir",
+		[Location of system mail spool directory.])
+fi
+
+AC_CACHE_CHECK([location of user mail file], shadow_cv_mailfile,
+[for shadow_cv_mailfile in Mailbox mailbox Mail mail .mail none; do
+	if test -f $HOME/$shadow_cv_mailfile; then
+		break
+	fi
+done])
+if test $shadow_cv_mailfile != none; then
+	AC_DEFINE_UNQUOTED(MAIL_SPOOL_FILE, "$shadow_cv_mailfile",
+		[Name of user's mail spool file if stored in user's home directory.])
+fi
+
+AC_CACHE_CHECK([location of utmp], shadow_cv_utmpdir,
+[for shadow_cv_utmpdir in /var/run /var/adm /usr/adm /etc none; do
+	if test -f $shadow_cv_utmpdir/utmp; then
+		break
+	fi
+done])
+if test "$shadow_cv_utmpdir" = "none"; then
+	AC_MSG_WARN(utmp file not found)
+fi
+AC_DEFINE_UNQUOTED(_UTMP_FILE, "$shadow_cv_utmpdir/utmp",
+	[Path for utmp file.])
+
+AC_CACHE_CHECK([location of faillog/lastlog/wtmp], shadow_cv_logdir,
+[for shadow_cv_logdir in /var/log /var/adm /usr/adm /etc; do
+	if test -d $shadow_cv_logdir; then
+		break
+	fi
+done])
+AC_DEFINE_UNQUOTED(_WTMP_FILE, "$shadow_cv_logdir/wtmp",
+	[Path for wtmp file.])
+AC_DEFINE_UNQUOTED(LASTLOG_FILE, "$shadow_cv_logdir/lastlog",
+	[Path for lastlog file.])
+AC_DEFINE_UNQUOTED(FAILLOG_FILE, "$shadow_cv_logdir/faillog",
+	[Path for faillog file.])
+
+AC_CACHE_CHECK([location of the passwd program], shadow_cv_passwd_dir,
+[if test -f /usr/bin/passwd; then
+	shadow_cv_passwd_dir=/usr/bin
+else
+	shadow_cv_passwd_dir=/bin
+fi])
+AC_DEFINE_UNQUOTED(PASSWD_PROGRAM, "$shadow_cv_passwd_dir/passwd",
+	[Path to passwd program.])
+
+dnl XXX - quick hack, should disappear before anyone notices :).
+AC_DEFINE(USE_SYSLOG, 1, [Define to use syslog().])
+if test "$ac_cv_func_ruserok" = "yes"; then
+	AC_DEFINE(RLOGIN, 1, [Define if login should support the -r flag for rlogind.])
+	AC_DEFINE(RUSEROK, 0, [Define to the ruserok() "success" return value (0 or 1).])
+fi
+
+AC_ARG_ENABLE(shadowgrp,
+	[AS_HELP_STRING([--enable-shadowgrp], [enable shadow group support @<:@default=yes@:>@])],
+	[case "${enableval}" in
+	 yes) enable_shadowgrp="yes" ;;
+	  no) enable_shadowgrp="no" ;;
+	   *) AC_MSG_ERROR(bad value ${enableval} for --enable-shadowgrp) ;;
+	 esac],
+	[enable_shadowgrp="yes"]
+)
+
+AC_ARG_ENABLE(man,
+	[AS_HELP_STRING([--enable-man],
+		[regenerate roff man pages from Docbook @<:@default=no@:>@])],
+	[enable_man="${enableval}"],
+	[enable_man="no"]
+)
+
+AC_ARG_ENABLE(account-tools-setuid,
+	[AS_HELP_STRING([--enable-account-tools-setuid],
+		[Install the user and group management tools setuid and authenticate the callers. This requires --with-libpam.])],
+	[case "${enableval}" in
+	 yes) enable_acct_tools_setuid="yes" ;;
+	  no) enable_acct_tools_setuid="no" ;;
+	   *) AC_MSG_ERROR(bad value ${enableval} for --enable-account-tools-setuid)
+	   ;;
+	 esac],
+	[enable_acct_tools_setuid="no"]
+)
+
+AC_ARG_ENABLE(utmpx,
+	[AS_HELP_STRING([--enable-utmpx],
+	                [enable loggin in utmpx / wtmpx @<:@default=no@:>@])],
+	[case "${enableval}" in
+	 yes) enable_utmpx="yes" ;;
+	  no) enable_utmpx="no" ;;
+	   *) AC_MSG_ERROR(bad value ${enableval} for --enable-utmpx) ;;
+	 esac],
+	[enable_utmpx="no"]
+)
+
+AC_ARG_ENABLE(subordinate-ids,
+	[AS_HELP_STRING([--enable-subordinate-ids],
+		[support subordinate ids @<:@default=yes@:>@])],
+	[enable_subids="${enableval}"],
+	[enable_subids="maybe"]
+)
+
+AC_ARG_WITH(audit,
+	[AS_HELP_STRING([--with-audit], [use auditing support @<:@default=yes if found@:>@])],
+	[with_audit=$withval], [with_audit=maybe])
+AC_ARG_WITH(libpam,
+	[AS_HELP_STRING([--with-libpam], [use libpam for PAM support @<:@default=yes if found@:>@])],
+	[with_libpam=$withval], [with_libpam=maybe])
+AC_ARG_WITH(btrfs,
+	[AS_HELP_STRING([--with-btrfs], [add BtrFS support @<:@default=yes if found@:>@])],
+	[with_btrfs=$withval], [with_btrfs=maybe])
+AC_ARG_WITH(selinux,
+	[AS_HELP_STRING([--with-selinux], [use SELinux support @<:@default=yes if found@:>@])],
+	[with_selinux=$withval], [with_selinux=maybe])
+AC_ARG_WITH(acl,
+	[AS_HELP_STRING([--with-acl], [use ACL support @<:@default=yes if found@:>@])],
+	[with_acl=$withval], [with_acl=maybe])
+AC_ARG_WITH(attr,
+	[AS_HELP_STRING([--with-attr], [use Extended Attribute support @<:@default=yes if found@:>@])],
+	[with_attr=$withval], [with_attr=maybe])
+AC_ARG_WITH(skey,
+	[AS_HELP_STRING([--with-skey], [use S/Key support @<:@default=no@:>@])],
+	[with_skey=$withval], [with_skey=no])
+AC_ARG_WITH(tcb,
+	[AS_HELP_STRING([--with-tcb], [use tcb support (incomplete) @<:@default=yes if found@:>@])],
+	[with_tcb=$withval], [with_tcb=maybe])
+AC_ARG_WITH(libcrack,
+	[AS_HELP_STRING([--with-libcrack], [use libcrack @<:@default=no@:>@])],
+	[with_libcrack=$withval], [with_libcrack=no])
+AC_ARG_WITH(sha-crypt,
+	[AS_HELP_STRING([--with-sha-crypt], [allow the SHA256 and SHA512 password encryption algorithms @<:@default=yes@:>@])],
+	[with_sha_crypt=$withval], [with_sha_crypt=yes])
+AC_ARG_WITH(bcrypt,
+	[AS_HELP_STRING([--with-bcrypt], [allow the bcrypt password encryption algorithm @<:@default=no@:>@])],
+	[with_bcrypt=$withval], [with_bcrypt=no])
+AC_ARG_WITH(yescrypt,
+	[AS_HELP_STRING([--with-yescrypt], [allow the yescrypt password encryption algorithm @<:@default=no@:>@])],
+	[with_yescrypt=$withval], [with_yescrypt=no])
+AC_ARG_WITH(nscd,
+	[AS_HELP_STRING([--with-nscd], [enable support for nscd @<:@default=yes@:>@])],
+	[with_nscd=$withval], [with_nscd=yes])
+AC_ARG_WITH(sssd,
+	[AS_HELP_STRING([--with-sssd], [enable support for flushing sssd caches @<:@default=yes@:>@])],
+	[with_sssd=$withval], [with_sssd=yes])
+AC_ARG_WITH(group-name-max-length,
+	[AS_HELP_STRING([--with-group-name-max-length], [set max group name length @<:@default=32@:>@])],
+	[with_group_name_max_length=$withval], [with_group_name_max_length=yes])
+AC_ARG_WITH(su,
+	[AS_HELP_STRING([--with-su], [build and install su program and man page @<:@default=yes@:>@])],
+	[with_su=$withval], [with_su=yes])
+
+if test "$with_group_name_max_length" = "no" ; then
+	with_group_name_max_length=0
+elif test "$with_group_name_max_length" = "yes" ; then
+	with_group_name_max_length=32
+fi
+AC_DEFINE_UNQUOTED(GROUP_NAME_MAX_LENGTH, $with_group_name_max_length, [max group name length])
+AC_SUBST(GROUP_NAME_MAX_LENGTH)
+GROUP_NAME_MAX_LENGTH="$with_group_name_max_length"
+
+AM_CONDITIONAL(USE_SHA_CRYPT, test "x$with_sha_crypt" = "xyes")
+if test "$with_sha_crypt" = "yes"; then
+	AC_DEFINE(USE_SHA_CRYPT, 1, [Define to allow the SHA256 and SHA512 password encryption algorithms])
+fi
+
+AM_CONDITIONAL(USE_BCRYPT, test "x$with_bcrypt" = "xyes")
+if test "$with_bcrypt" = "yes"; then
+	AC_DEFINE(USE_BCRYPT, 1, [Define to allow the bcrypt password encryption algorithm])
+fi
+
+AM_CONDITIONAL(USE_YESCRYPT, test "x$with_yescrypt" = "xyes")
+if test "$with_yescrypt" = "yes"; then
+	AC_DEFINE(USE_YESCRYPT, 1, [Define to allow the yescrypt password encryption algorithm])
+fi
+
+if test "$with_nscd" = "yes"; then
+	AC_CHECK_FUNC(posix_spawn,
+	              [AC_DEFINE(USE_NSCD, 1, [Define to support flushing of nscd caches])],
+	              [AC_MSG_ERROR([posix_spawn is needed for nscd support])])
+fi
+
+if test "$with_sssd" = "yes"; then
+	AC_CHECK_FUNC(posix_spawn,
+	              [AC_DEFINE(USE_SSSD, 1, [Define to support flushing of sssd caches])],
+	              [AC_MSG_ERROR([posix_spawn is needed for sssd support])])
+fi
+
+AS_IF([test "$with_su" != "no"], AC_DEFINE(WITH_SU, 1, [Build with su]))
+AM_CONDITIONAL([WITH_SU], [test "x$with_su" != "xno"])
+
+dnl Check for some functions in libc first, only if not found check for
+dnl other libraries.  This should prevent linking libnsl if not really
+dnl needed (Linux glibc, Irix), but still link it if needed (Solaris).
+
+AC_SEARCH_LIBS(inet_ntoa, inet)
+AC_SEARCH_LIBS(socket, socket)
+AC_SEARCH_LIBS(gethostbyname, nsl)
+
+AC_CHECK_LIB([econf],[econf_readDirs],[LIBECONF="-leconf"],[LIBECONF=""])
+if test -n "$LIBECONF"; then
+	ECONF_CPPFLAGS="-DUSE_ECONF=1"
+	AC_ARG_ENABLE([vendordir],
+		AS_HELP_STRING([--enable-vendordir=DIR], [Directory for distribution provided configuration files]),,[])
+fi
+AC_SUBST(ECONF_CPPFLAGS)
+AC_SUBST(LIBECONF)
+AC_SUBST([VENDORDIR], [$enable_vendordir])
+AM_CONDITIONAL([HAVE_VENDORDIR], [test "x$enable_vendordir" != x])
+
+if test "$enable_shadowgrp" = "yes"; then
+	AC_DEFINE(SHADOWGRP, 1, [Define to support the shadow group file.])
+fi
+AM_CONDITIONAL(SHADOWGRP, test "x$enable_shadowgrp" = "xyes")
+
+if test "$enable_man" = "yes"; then
+	dnl
+	dnl Check for xsltproc
+	dnl
+	AC_PATH_PROG([XSLTPROC], [xsltproc])
+	if test -z "$XSLTPROC"; then
+		enable_man=no
+		AC_MSG_ERROR([xsltproc is missing.])
+	fi
+
+	dnl check for DocBook DTD and stylesheets in the local catalog.
+	JH_CHECK_XML_CATALOG([-//OASIS//DTD DocBook XML V4.5//EN],
+		[DocBook XML DTD V4.5], [], enable_man=no)
+	JH_CHECK_XML_CATALOG([http://docbook.sourceforge.net/release/xsl/current/manpages/docbook.xsl],
+		[DocBook XSL Stylesheets >= 1.70.1], [], enable_man=no)
+fi
+AM_CONDITIONAL(ENABLE_REGENERATE_MAN, test "x$enable_man" != "xno")
+
+if test "$enable_subids" != "no"; then
+	dnl
+	dnl FIXME: check if 32 bit UIDs/GIDs are supported by libc
+	dnl
+	AC_CHECK_SIZEOF([uid_t],, [#include "sys/types.h"])
+	AC_CHECK_SIZEOF([gid_t],, [#include "sys/types.h"])
+
+	if test "$ac_cv_sizeof_uid_t" -ge 4 && test "$ac_cv_sizeof_gid_t" -ge 4; then
+		AC_DEFINE(ENABLE_SUBIDS, 1, [Define to support the subordinate IDs.])
+		enable_subids="yes"
+	else
+		if test "x$enable_subids" = "xyes"; then
+			AC_MSG_ERROR([Cannot enable support the subordinate IDs on systems where gid_t or uid_t has less than 32 bits])
+		fi
+		enable_subids="no"
+	fi
+fi
+AM_CONDITIONAL(ENABLE_SUBIDS, test "x$enable_subids" != "xno")
+
+AC_SUBST(LIBCRYPT)
+AC_CHECK_LIB(crypt, crypt, [LIBCRYPT=-lcrypt],
+	[AC_MSG_ERROR([crypt() not found])])
+
+AC_SUBST(LIYESCRYPT)
+AC_CHECK_LIB(crypt, crypt, [LIYESCRYPT=-lcrypt],
+	[AC_MSG_ERROR([crypt() not found])])
+
+AC_SUBST(LIBACL)
+if test "$with_acl" != "no"; then
+	AC_CHECK_HEADERS(acl/libacl.h attr/error_context.h, [acl_header="yes"], [acl_header="no"])
+	if test "$acl_header$with_acl" = "noyes" ; then
+		AC_MSG_ERROR([acl/libacl.h or attr/error_context.h is missing])
+	elif test "$acl_header" = "yes" ; then
+		AC_CHECK_LIB(acl, perm_copy_file,
+		             [AC_CHECK_LIB(acl, perm_copy_fd,
+		                           [acl_lib="yes"],
+		                           [acl_lib="no"])],
+		             [acl_lib="no"])
+		if test "$acl_lib$with_acl" = "noyes" ; then
+			AC_MSG_ERROR([libacl not found])
+		elif test "$acl_lib" = "no" ; then
+			with_acl="no"
+		else
+			AC_DEFINE(WITH_ACL, 1,
+			          [Build shadow with ACL support])
+			LIBACL="-lacl"
+			with_acl="yes"
+		fi
+	else
+		with_acl="no"
+	fi
+fi
+
+AC_SUBST(LIBATTR)
+if test "$with_attr" != "no"; then
+	AC_CHECK_HEADERS(attr/libattr.h attr/error_context.h, [attr_header="yes"], [attr_header="no"])
+	if test "$attr_header$with_attr" = "noyes" ; then
+		AC_MSG_ERROR([attr/libattr.h or attr/error_context.h is missing])
+	elif test "$attr_header" = "yes" ; then
+		AC_CHECK_LIB(attr, attr_copy_file,
+		             [AC_CHECK_LIB(attr, attr_copy_fd,
+		                           [attr_lib="yes"],
+		                           [attr_lib="no"])],
+		             [attr_lib="no"])
+		if test "$attr_lib$with_attr" = "noyes" ; then
+			AC_MSG_ERROR([libattr not found])
+		elif test "$attr_lib" = "no" ; then
+			with_attr="no"
+		else
+			AC_DEFINE(WITH_ATTR, 1,
+			          [Build shadow with Extended Attributes support])
+			LIBATTR="-lattr"
+			with_attr="yes"
+		fi
+	else
+		with_attr="no"
+	fi
+fi
+
+AC_SUBST(LIBAUDIT)
+if test "$with_audit" != "no"; then
+	AC_CHECK_HEADER(libaudit.h, [audit_header="yes"], [audit_header="no"])
+	if test "$audit_header$with_audit" = "noyes" ; then
+		AC_MSG_ERROR([libaudit.h is missing])
+	elif test "$audit_header" = "yes"; then
+		AC_CHECK_DECL(AUDIT_ADD_USER,,[audit_header="no"],[#include <libaudit.h>])
+		AC_CHECK_DECL(AUDIT_DEL_USER,,[audit_header="no"],[#include <libaudit.h>])
+		AC_CHECK_DECL(AUDIT_ADD_GROUP,,[audit_header="no"],[#include <libaudit.h>])
+		AC_CHECK_DECL(AUDIT_DEL_GROUP,,[audit_header="no"],[#include <libaudit.h>])
+		if test "$audit_header$with_audit" = "noyes" ; then
+			AC_MSG_ERROR([AUDIT_ADD_USER AUDIT_DEL_USER AUDIT_ADD_GROUP or AUDIT_DEL_GROUP missing from libaudit.h])
+		fi
+	fi
+	if test "$audit_header" = "yes"; then
+		AC_CHECK_LIB(audit, audit_log_acct_message,
+		             [audit_lib="yes"], [audit_lib="no"])
+		if test "$audit_lib$with_audit" = "noyes" ; then
+			AC_MSG_ERROR([libaudit not found])
+		elif test "$audit_lib" = "no" ; then
+			with_audit="no"
+		else
+			AC_DEFINE(WITH_AUDIT, 1,
+			          [Define if you want to enable Audit messages])
+			LIBAUDIT="-laudit"
+			with_audit="yes"
+		fi
+	else
+		with_audit="no"
+	fi
+fi
+
+AC_SUBST(LIBCRACK)
+if test "$with_libcrack" = "yes"; then
+	echo "checking cracklib flavour, don't be surprised by the results"
+	AC_CHECK_LIB(crack, FascistCheck,
+		[LIBCRACK=-lcrack AC_DEFINE(HAVE_LIBCRACK, 1, [Defined if you have libcrack.])])
+	AC_CHECK_LIB(crack, FascistHistory,
+		AC_DEFINE(HAVE_LIBCRACK_HIST, 1, [Defined if you have the ts&szs cracklib.]))
+	AC_CHECK_LIB(crack, FascistHistoryPw,
+		AC_DEFINE(HAVE_LIBCRACK_PW, 1, [Defined if it includes *Pw functions.]))
+fi
+
+if test "$with_btrfs" != "no"; then
+	AC_CHECK_HEADERS([sys/statfs.h linux/magic.h linux/btrfs_tree.h], \
+		[btrfs_headers="yes"], [btrfs_headers="no"])
+	if test "$btrfs_headers$with_btrfs" = "noyes" ; then
+		AC_MSG_ERROR([One of sys/statfs.h linux/magic.h linux/btrfs_tree.h is missing])
+	fi
+
+	if test "$btrfs_headers" = "yes" ; then
+		AC_DEFINE(WITH_BTRFS, 1, [Build shadow with BtrFS support])
+		with_btrfs="yes"
+	fi
+fi
+AM_CONDITIONAL(WITH_BTRFS, test x$with_btrfs = xyes)
+
+AC_SUBST(LIBSELINUX)
+AC_SUBST(LIBSEMANAGE)
+if test "$with_selinux" != "no"; then
+	AC_CHECK_HEADERS(selinux/selinux.h, [selinux_header="yes"], [selinux_header="no"])
+	if test "$selinux_header$with_selinux" = "noyes" ; then
+		AC_MSG_ERROR([selinux/selinux.h is missing])
+	fi
+
+	AC_CHECK_HEADERS(semanage/semanage.h, [semanage_header="yes"], [semanage_header="no"])
+	if test "$semanage_header$with_selinux" = "noyes" ; then
+		AC_MSG_ERROR([semanage/semanage.h is missing])
+	fi
+
+	if test "$selinux_header$semanage_header" = "yesyes" ; then
+		AC_CHECK_LIB(selinux, is_selinux_enabled, [selinux_lib="yes"], [selinux_lib="no"])
+		if test "$selinux_lib$with_selinux" = "noyes" ; then
+			AC_MSG_ERROR([libselinux not found])
+		fi
+
+		AC_CHECK_LIB(semanage, semanage_connect, [semanage_lib="yes"], [semanage_lib="no"])
+		if test "$semanage_lib$with_selinux" = "noyes" ; then
+			AC_MSG_ERROR([libsemanage not found])
+		fi
+
+		if test "$selinux_lib$semanage_lib" = "yesyes" ; then
+			AC_DEFINE(WITH_SELINUX, 1,
+			          [Build shadow with SELinux support])
+			LIBSELINUX="-lselinux"
+			LIBSEMANAGE="-lsemanage"
+			with_selinux="yes"
+		else
+			with_selinux="no"
+		fi
+	else
+		with_selinux="no"
+	fi
+fi
+
+AC_SUBST(LIBTCB)
+if test "$with_tcb" != "no"; then
+	AC_CHECK_HEADERS(tcb.h, [tcb_header="yes"], [tcb_header="no"])
+	if test "$tcb_header$with_tcb" = "noyes" ; then
+		AC_MSG_ERROR([tcb.h is missing])
+	elif test "$tcb_header" = "yes" ; then
+		AC_CHECK_LIB(tcb, tcb_is_suspect, [tcb_lib="yes"], [tcb_lib="no"])
+		if test "$tcb_lib$with_tcb" = "noyes" ; then
+			AC_MSG_ERROR([libtcb not found])
+		elif test "$tcb_lib" = "no" ; then
+			with_tcb="no"
+		else
+			AC_DEFINE(WITH_TCB, 1, [Build shadow with tcb support (incomplete)])
+			LIBTCB="-ltcb"
+			with_tcb="yes"
+		fi
+	else
+		with_tcb="no"
+	fi
+fi
+AM_CONDITIONAL(WITH_TCB, test x$with_tcb = xyes)
+
+AC_SUBST(LIBPAM)
+if test "$with_libpam" != "no"; then
+	AC_CHECK_LIB(pam, pam_start,
+	             [pam_lib="yes"], [pam_lib="no"])
+	if test "$pam_lib$with_libpam" = "noyes" ; then
+		AC_MSG_ERROR(libpam not found)
+	fi
+
+	LIBPAM="-lpam"
+	pam_conv_function="no"
+
+	AC_CHECK_LIB(pam, openpam_ttyconv,
+	             [pam_conv_function="openpam_ttyconv"],
+	             AC_CHECK_LIB(pam_misc, misc_conv,
+	                          [pam_conv_function="misc_conv"; LIBPAM="$LIBPAM -lpam_misc"])
+	            )
+
+	if test "$pam_conv_function$with_libpam" = "noyes" ; then
+		AC_MSG_ERROR(PAM conversation function not found)
+	fi
+
+	pam_headers_found=no
+	AC_CHECK_HEADERS( [security/openpam.h security/pam_misc.h],
+	                 [ pam_headers_found=yes ; break ], [],
+	                 [ #include <security/pam_appl.h> ] )
+	if test "$pam_headers_found$with_libpam" = "noyes" ; then
+	                AC_MSG_ERROR(PAM headers not found)
+	fi
+
+
+	if test "$pam_lib$pam_headers_found" = "yesyes" -a "$pam_conv_function" != "no" ; then
+		with_libpam="yes"
+	else
+		with_libpam="no"
+		unset LIBPAM
+	fi
+fi
+dnl Now with_libpam is either yes or no
+if test "$with_libpam" = "yes"; then
+	AC_CHECK_DECLS([PAM_ESTABLISH_CRED,
+	                PAM_DELETE_CRED,
+	                PAM_NEW_AUTHTOK_REQD,
+	                PAM_DATA_SILENT],
+	               [], [], [#include <security/pam_appl.h>])
+
+
+	save_libs=$LIBS
+	LIBS="$LIBS $LIBPAM"
+	# We do not use AC_CHECK_FUNCS to avoid duplicated definition with
+	# Linux PAM.
+	AC_CHECK_FUNC(pam_fail_delay, [AC_DEFINE(HAS_PAM_FAIL_DELAY, 1, [Define to 1 if you have the declaration of 'pam_fail_delay'])])
+	LIBS=$save_libs
+
+	AC_DEFINE(USE_PAM, 1, [Define to support Pluggable Authentication Modules])
+	AC_DEFINE_UNQUOTED(SHADOW_PAM_CONVERSATION, [$pam_conv_function],[PAM conversation to use])
+	AM_CONDITIONAL(USE_PAM, [true])
+
+	AC_MSG_CHECKING(use login and su access checking if PAM not used)
+	AC_MSG_RESULT(no)
+else
+	AC_DEFINE(SU_ACCESS, 1, [Define to support /etc/suauth su access control.])
+	AM_CONDITIONAL(USE_PAM, [false])
+	AC_MSG_CHECKING(use login and su access checking if PAM not used)
+	AC_MSG_RESULT(yes)
+fi
+
+if test "$enable_acct_tools_setuid" != "no"; then
+	if test "$with_libpam" != "yes"; then
+		if test "$enable_acct_tools_setuid" = "yes"; then
+			AC_MSG_ERROR(PAM support is required for --enable-account-tools-setuid)
+		else
+			enable_acct_tools_setuid="no"
+		fi
+	else
+		enable_acct_tools_setuid="yes"
+	fi
+	if test "$enable_acct_tools_setuid" = "yes"; then
+		AC_DEFINE(ACCT_TOOLS_SETUID,
+		          1,
+		          [Define if account management tools should be installed setuid and authenticate the callers])
+	fi
+fi
+AM_CONDITIONAL(ACCT_TOOLS_SETUID, test "x$enable_acct_tools_setuid" = "xyes")
+
+
+AC_ARG_WITH(fcaps,
+	[AS_HELP_STRING([--with-fcaps], [use file capabilities instead of suid binaries for newuidmap/newgidmap @<:@default=no@:>@])],
+	[with_fcaps=$withval], [with_fcaps=no])
+AM_CONDITIONAL(FCAPS, test "x$with_fcaps" = "xyes")
+
+if test "x$with_fcaps" = "xyes"; then
+	AC_CHECK_PROGS(capcmd, "setcap")
+	if test "x$capcmd" = "x" ; then
+		AC_MSG_ERROR([setcap command not available])
+	fi
+fi
+
+AC_SUBST(LIBSKEY)
+AC_SUBST(LIBMD)
+if test "$with_skey" = "yes"; then
+	AC_CHECK_LIB(md, MD5Init, [LIBMD=-lmd])
+	AC_CHECK_LIB(skey, skeychallenge, [LIBSKEY=-lskey],
+		[AC_MSG_ERROR([liskey missing. You can download S/Key source code from http://rsync1.it.gentoo.org/gentoo/distfiles/skey-1.1.5.tar.bz2])])
+	AC_DEFINE(SKEY, 1, [Define to support S/Key logins.])
+	AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
+		#include <stdio.h>
+		#include <skey.h>
+	]], [[
+		skeychallenge((void*)0, (void*)0, (void*)0, 0);
+	]])],[AC_DEFINE(SKEY_BSD_STYLE, 1, [Define to support newer BSD S/Key API])],[])
+fi
+
+if test "$enable_utmpx" = "yes"; then
+	if test "$ac_cv_header_utmpx_h" != "yes"; then
+		AC_MSG_ERROR([The utmpx.h header file is required for utmpx support.])
+	fi
+	AC_DEFINE(USE_UTMPX,
+	          1,
+	          [Define if utmpx should be used])
+fi
+
+AC_DEFINE_UNQUOTED(SHELL, ["$SHELL"], [The default shell.])
+
+AM_GNU_GETTEXT_VERSION([0.19])
+AM_GNU_GETTEXT([external], [need-ngettext])
+AM_CONDITIONAL(USE_NLS, test "x$USE_NLS" = "xyes")
+
+AC_CONFIG_FILES([
+	Makefile
+	po/Makefile.in
+	doc/Makefile
+	man/Makefile
+	man/config.xml
+	man/po/Makefile
+	man/cs/Makefile
+	man/da/Makefile
+	man/de/Makefile
+	man/es/Makefile
+	man/fi/Makefile
+	man/fr/Makefile
+	man/hu/Makefile
+	man/id/Makefile
+	man/it/Makefile
+	man/ja/Makefile
+	man/ko/Makefile
+	man/pl/Makefile
+	man/pt_BR/Makefile
+	man/ru/Makefile
+	man/sv/Makefile
+	man/tr/Makefile
+	man/uk/Makefile
+	man/zh_CN/Makefile
+	man/zh_TW/Makefile
+	libmisc/Makefile
+	lib/Makefile
+	libsubid/Makefile
+	libsubid/subid.h
+	src/Makefile
+	contrib/Makefile
+	etc/Makefile
+	etc/pam.d/Makefile
+	shadow.spec
+])
+AC_OUTPUT
+
+echo
+echo "shadow will be compiled with the following features:"
+echo
+echo "	auditing support:		$with_audit"
+echo "	CrackLib support:		$with_libcrack"
+echo "	PAM support:			$with_libpam"
+if test "$with_libpam" = "yes"; then
+echo "	suid account management tools:	$enable_acct_tools_setuid"
+fi
+echo "	SELinux support:		$with_selinux"
+echo "	BtrFS support:			$with_btrfs"
+echo "	ACL support:			$with_acl"
+echo "	Extended Attributes support:	$with_attr"
+echo "	tcb support (incomplete):	$with_tcb"
+echo "	shadow group support:		$enable_shadowgrp"
+echo "	S/Key support:			$with_skey"
+echo "	SHA passwords encryption:	$with_sha_crypt"
+echo "	bcrypt passwords encryption:	$with_bcrypt"
+echo "	yescrypt passwords encryption:	$with_yescrypt"
+echo "	nscd support:			$with_nscd"
+echo "	sssd support:			$with_sssd"
+echo "	subordinate IDs support:	$enable_subids"
+echo "	use file caps:			$with_fcaps"
+echo "	install su:			$with_su"
+echo

configure.in

@@ -1,430 +0,0 @@
-dnl Process this file with autoconf to produce a configure script.
-AC_INIT
-AM_INIT_AUTOMAKE(shadow, 4.1.2)
-AC_CONFIG_HEADERS([config.h])
-
-dnl Some hacks...
-test "$prefix" = "NONE" && prefix="/usr"
-test "$prefix" = "/usr" && exec_prefix=""
-
-AC_GNU_SOURCE
-
-AM_DISABLE_SHARED
-AM_ENABLE_STATIC
-
-AM_MAINTAINER_MODE
-
-dnl Checks for programs.
-AC_PROG_CC
-AC_ISC_POSIX
-AC_PROG_LN_S
-AC_PROG_YACC
-AM_C_PROTOTYPES
-AM_PROG_LIBTOOL
-
-dnl Checks for libraries.
-
-dnl Checks for header files.
-AC_HEADER_DIRENT
-AC_HEADER_STDC
-AC_HEADER_SYS_WAIT
-
-AC_CHECK_HEADERS(errno.h fcntl.h limits.h unistd.h sys/time.h utmp.h \
-	utmpx.h termios.h termio.h sgtty.h sys/ioctl.h syslog.h paths.h \
-	utime.h ulimit.h sys/resource.h gshadow.h lastlog.h \
-	locale.h rpc/key_prot.h netdb.h)
-
-dnl shadow now uses the libc's shadow implementation
-AC_CHECK_HEADER([shadow.h],,[AC_MSG_ERROR([You need a libc with shadow.h])])
-
-AC_CHECK_FUNCS(l64a fchmod fchown fsync getgroups gethostname getspnam \
-	gettimeofday getusershell getutent initgroups lchown lckpwdf lstat \
-	memcpy memset setgroups sigaction strchr updwtmp updwtmpx innetgr \
-	getpwnam_r getpwuid_r getgrnam_r getgrgid_r getspnam_r)
-AC_SYS_LARGEFILE
-
-dnl Checks for typedefs, structures, and compiler characteristics.
-AC_C_CONST
-AC_TYPE_UID_T
-AC_TYPE_OFF_T
-AC_TYPE_PID_T
-AC_TYPE_MODE_T
-AC_HEADER_STAT
-AC_CHECK_MEMBERS([struct stat.st_rdev])
-AC_HEADER_TIME
-AC_STRUCT_TM
-
-if test "$ac_cv_header_utmp_h" = "yes"; then
-	AC_CACHE_CHECK(for ut_host in struct utmp,
-		ac_cv_struct_utmp_ut_host,
-		AC_COMPILE_IFELSE(
-			[AC_LANG_PROGRAM([#include <utmp.h>],
-				[struct utmp ut; char *cp = ut.ut_host;]
-			)],
-			[ac_cv_struct_utmp_ut_host=yes],
-			[ac_cv_struct_utmp_ut_host=no]
-		)
-	)
-
-	if test "$ac_cv_struct_utmp_ut_host" = "yes"; then
-		AC_DEFINE(UT_HOST, 1, [Define if you have ut_host in struct utmp.])
-	fi
-
-	AC_CACHE_CHECK(for ut_user in struct utmp,
-		ac_cv_struct_utmp_ut_user,
-		AC_COMPILE_IFELSE([AC_LANG_PROGRAM([#include <utmp.h>],
-				[struct utmp ut; char *cp = ut.ut_user;]
-			)],
-			[ac_cv_struct_utmp_ut_user=yes],
-			[ac_cv_struct_utmp_ut_user=no]
-		)
-	)
-
-	if test "$ac_cv_struct_utmp_ut_user" = "no"; then
-		AC_DEFINE(ut_user, ut_name,
-			[Define to ut_name if struct utmp has ut_name (not ut_user).])
-	fi
-fi
-
-if test "$ac_cv_header_lastlog_h" = "yes"; then
-	AC_CACHE_CHECK(for ll_host in struct lastlog,
-		ac_cv_struct_lastlog_ll_host,
-		AC_COMPILE_IFELSE([AC_LANG_PROGRAM([#include <lastlog.h>],
-					[struct lastlog ll; char *cp = ll.ll_host;]
-				)],
-			[ac_cv_struct_lastlog_ll_host=yes],
-			[ac_cv_struct_lastlog_ll_host=no]
-		)
-	)
-
-	if test "$ac_cv_struct_lastlog_ll_host" = "yes"; then
-		AC_DEFINE(HAVE_LL_HOST, 1,
-			[Define if struct lastlog has ll_host])
-	fi
-fi
-
-dnl Checks for library functions.
-AC_TYPE_GETGROUPS
-AC_TYPE_SIGNAL
-AC_FUNC_UTIME_NULL
-AC_FUNC_STRFTIME
-AC_REPLACE_FUNCS(mkdir putgrent putpwent putspent rename rmdir)
-AC_REPLACE_FUNCS(sgetgrent sgetpwent sgetspent)
-AC_REPLACE_FUNCS(snprintf strcasecmp strdup strerror strstr)
-
-AC_CHECK_FUNC(setpgrp)
-AC_FUNC_SETPGRP
-
-if test "$ac_cv_header_shadow_h" = "yes"; then
-	AC_CACHE_CHECK(for working shadow group support,
-		ac_cv_libc_shadowgrp,
-		AC_RUN_IFELSE([AC_LANG_SOURCE([
-				#include <shadow.h>
-				main()
-				{
-					struct sgrp *sg = sgetsgent("test:x::");
-					/* NYS libc on Red Hat 3.0.3 has broken shadow group support */
-					return !sg || !sg->sg_adm || !sg->sg_mem;
-				}]
-			)],
-			[ac_cv_libc_shadowgrp=yes],
-			[ac_cv_libc_shadowgrp=no],
-			[ac_cv_libc_shadowgrp=no]
-		)
-	)
-
-	if test "$ac_cv_libc_shadowgrp" = "yes"; then
-		AC_DEFINE(HAVE_SHADOWGRP, 1, [Have working shadow group support in libc])
-	fi
-fi
-
-AC_CACHE_CHECK([location of shared mail directory], shadow_cv_maildir,
-[for shadow_cv_maildir in /var/mail /var/spool/mail /usr/spool/mail /usr/mail none; do
-	if test -d $shadow_cv_maildir; then
-		break
-	fi
-done])
-if test $shadow_cv_maildir != none; then
-	AC_DEFINE_UNQUOTED(MAIL_SPOOL_DIR, "$shadow_cv_maildir",
-		[Location of system mail spool directory.])
-fi
-
-AC_CACHE_CHECK([location of user mail file], shadow_cv_mailfile,
-[for shadow_cv_mailfile in Mailbox mailbox Mail mail .mail none; do
-	if test -f $HOME/$shadow_cv_mailfile; then
-		break
-	fi
-done])
-if test $shadow_cv_mailfile != none; then
-	AC_DEFINE_UNQUOTED(MAIL_SPOOL_FILE, "$shadow_cv_mailfile",
-		[Name of user's mail spool file if stored in user's home directory.])
-fi
-
-AC_CACHE_CHECK([location of utmp], shadow_cv_utmpdir,
-[for shadow_cv_utmpdir in /var/run /var/adm /usr/adm /etc none; do
-	if test -f $shadow_cv_utmpdir/utmp; then
-		break
-	fi
-done])
-if test "$shadow_cv_utmpdir" = "none"; then
-	AC_MSG_WARN(utmp file not found)
-fi
-AC_DEFINE_UNQUOTED(_UTMP_FILE, "$shadow_cv_utmpdir/utmp",
-	[Path for utmp file.])
-
-AC_CACHE_CHECK([location of faillog/lastlog/wtmp], shadow_cv_logdir,
-[for shadow_cv_logdir in /var/log /var/adm /usr/adm /etc; do
-	if test -d $shadow_cv_logdir; then
-		break
-	fi
-done])
-AC_DEFINE_UNQUOTED(_WTMP_FILE, "$shadow_cv_logdir/wtmp",
-	[Path for wtmp file.])
-AC_DEFINE_UNQUOTED(LASTLOG_FILE, "$shadow_cv_logdir/lastlog",
-	[Path for lastlog file.])
-AC_DEFINE_UNQUOTED(FAILLOG_FILE, "$shadow_cv_logdir/faillog",
-	[Path for faillog file.])
-
-AC_CACHE_CHECK([location of the passwd program], shadow_cv_passwd_dir,
-[if test -f /usr/bin/passwd; then
-	shadow_cv_passwd_dir=/usr/bin
-else
-	shadow_cv_passwd_dir=/bin
-fi])
-AC_DEFINE_UNQUOTED(PASSWD_PROGRAM, "$shadow_cv_passwd_dir/passwd",
-	[Path to passwd program.])
-
-dnl XXX - quick hack, should disappear before anyone notices :).
-AC_DEFINE(USE_SYSLOG, 1, [Define to use syslog().])
-AC_DEFINE(RLOGIN, 1, [Define if login should support the -r flag for rlogind.])
-AC_DEFINE(RUSEROK, 0, [Define to the ruserok() "success" return value (0 or 1).])
-
-AC_ARG_ENABLE(shadowgrp,
-	[AC_HELP_STRING([--enable-shadowgrp], [enable shadow group support @<:@default=yes@:>@])],
-	[case "${enableval}" in
-	 yes) enable_shadowgrp="yes" ;;
-	  no) enable_shadowgrp="no" ;;
-	   *) AC_MSG_ERROR(bad value ${enableval} for --enable-shadowgrp) ;;
-	 esac],
-	[enable_shadowgrp="yes"]
-)
-
-AC_ARG_ENABLE(man,
-	[AC_HELP_STRING([--enable-man],
-		[regenerate roff man pages from Docbook @<:@default=no@:>@])],
-	[enable_man=yes],
-        [enable_man=no]
-)
-
-AC_ARG_WITH(audit, 
-	[AC_HELP_STRING([--with-audit], [use auditing support @<:@default=yes if found@:>@])],
-	[with_audit=$withval], [with_audit=maybe])
-AC_ARG_WITH(libpam,
-	[AC_HELP_STRING([--with-libpam], [use libpam for PAM support @<:@default=yes if found@:>@])],
-	[with_libpam=$withval], [with_libpam=maybe])
-AC_ARG_WITH(selinux,
-	[AC_HELP_STRING([--with-selinux], [use SELinux support @<:@default=yes if found@:>@])],
-	[with_selinux=$withval], [with_selinux=maybe])
-AC_ARG_WITH(skey,
-	[AC_HELP_STRING([--with-skey], [use S/Key support @<:@default=no@:>@])],
-	[with_skey=$withval], [with_skey=no])
-AC_ARG_WITH(libcrack,
-	[AC_HELP_STRING([--with-libcrack], [use libcrack @<:@default=yes if found and if PAM not enabled@:>@])],
-	[with_libcrack=$withval], [with_libcrack=no])
-AC_ARG_WITH(sha-crypt,
-	[AC_HELP_STRING([--with-sha-crypt], [allow the SHA256 and SHA512 password encryption algorithms @<:@default=yes@:>@])],
-	[with_sha_crypt=$withval], [with_sha_crypt=yes])
-
-AM_CONDITIONAL(USE_SHA_CRYPT, test "x$with_sha_crypt" = "xyes")
-if test "$with_sha_crypt" = "yes"; then
-		AC_DEFINE(USE_SHA_CRYPT, 1, [Define to allow the SHA256 and SHA512 password encryption algorithms])
-fi
-
-dnl Check for some functions in libc first, only if not found check for
-dnl other libraries.  This should prevent linking libnsl if not really
-dnl needed (Linux glibc, Irix), but still link it if needed (Solaris).
-
-AC_SEARCH_LIBS(inet_ntoa, inet)
-AC_SEARCH_LIBS(socket, socket)
-AC_SEARCH_LIBS(gethostbyname, nsl)
-
-if test "$enable_shadowgrp" = "yes"; then
-	AC_DEFINE(SHADOWGRP, 1, [Define to support the shadow group file.])
-fi
-AM_CONDITIONAL(SHADOWGRP, test "x$enable_shadowgrp" = "xyes")
-
-if test "$enable_man" = "yes"; then
-	dnl
-	dnl Check for xsltproc
-	dnl
-	AC_PATH_PROG([XSLTPROC], [xsltproc])
-	if test -z "$XSLTPROC"; then
-		enable_man=no
-	fi
-
-	dnl check for DocBook DTD and stylesheets in the local catalog.
-	JH_CHECK_XML_CATALOG([-//OASIS//DTD DocBook XML V4.1.2//EN],
-		[DocBook XML DTD V4.1.2], [], enable_man=no)
-	JH_CHECK_XML_CATALOG([http://docbook.sourceforge.net/release/xsl/current/manpages/docbook.xsl],
-		[DocBook XSL Stylesheets >= 1.70.1], [], enable_man=no)
-fi
-AM_CONDITIONAL(ENABLE_REGENERATE_MAN, test x$enable_man != xno)
-
-AC_SUBST(LIBCRYPT)
-AC_CHECK_LIB(crypt, crypt, [LIBCRYPT=-lcrypt],
-	[AC_MSG_ERROR([crypt() not found])])
-
-AC_SUBST(LIBAUDIT)
-if test "$with_audit" != "no"; then
-	AC_CHECK_HEADER(libaudit.h, [audit_header="yes"], [audit_header="no"])
-	if test "$audit_header$with_audit" = "noyes" ; then
-		AC_MSG_ERROR([libaudit.h is missing])
-	elif test "$audit_header" = "yes"; then
-		AC_CHECK_LIB(audit, audit_log_acct_message,
-		             [audit_lib="yes"], [audit_lib="no"])
-		if test "$audit_lib$with_audit" = "noyes" ; then
-			AC_MSG_ERROR([libaudit not found])
-		elif test "$audit_lib" = "no" ; then
-			with_audit="no"
-		else
-			AC_DEFINE(WITH_AUDIT, 1,
-			          [Define if you want to enable Audit messages])
-			LIBAUDIT="-laudit"
-			with_audit="yes"
-		fi
-	else
-		with_audit="no"
-	fi
-fi
-
-AC_SUBST(LIBCRACK)
-if test "$with_libcrack" = "yes"; then
-	echo "checking cracklib flavour, don't be surprised by the results"
-	AC_CHECK_LIB(crack, FascistCheck,
-		[LIBCRACK=-lcrack AC_DEFINE(HAVE_LIBCRACK, 1, [Defined if you have libcrack.])])
-	AC_CHECK_LIB(crack, FascistHistory,
-		AC_DEFINE(HAVE_LIBCRACK_HIST, 1, [Defined if you have the ts&szs cracklib.]))
-	AC_CHECK_LIB(crack, FascistHistoryPw,
-		AC_DEFINE(HAVE_LIBCRACK_PW, 1, [Defined if it includes *Pw functions.]))
-fi
-
-AC_SUBST(LIBSELINUX)
-if test "$with_selinux" != "no"; then
-	AC_CHECK_HEADERS(selinux/selinux.h, [selinux_header="yes"], [selinux_header="no"])
-	if test "$selinux_header$with_selinux" = "noyes" ; then
-		AC_MSG_ERROR([selinux/selinux.h is missing])
-	elif test "$selinux_header" = "yes" ; then
-		AC_CHECK_LIB(selinux, is_selinux_enabled,
-		             [selinux_lib="yes"], [selinux_lib="no"])
-		if test "$selinux_lib$with_selinux" = "noyes" ; then
-			AC_MSG_ERROR([libselinux not found])
-		elif test "$selinux_lib" = "no" ; then
-			with_selinux="no"
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-	if test "$pam_lib$with_libpam" = "noyes" ; then
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-
-	AC_CHECK_LIB(pam_misc, main,
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-		AC_MSG_ERROR(libpam_misc not found)
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-
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-		with_libpam="yes"
-	else
-		with_libpam="no"
-	fi
-fi
-dnl Now with_libpam is either yes or no
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-	AC_DEFINE(USE_PAM, 1, [Define to support Pluggable Authentication Modules])
-	AM_CONDITIONAL(USE_PAM, [true])
-	LIBPAM="-lpam -lpam_misc"
-	AC_MSG_CHECKING(use login and su access checking if PAM not used)
-	AC_MSG_RESULT(no)
-else
-	AC_DEFINE(SU_ACCESS, 1, [Define to support /etc/suauth su access control.])
-	AM_CONDITIONAL(USE_PAM, [false])
-	AC_MSG_CHECKING(use login and su access checking if PAM not used)
-	AC_MSG_RESULT(yes)
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-
-AC_SUBST(LIBSKEY)
-AC_SUBST(LIBMD)
-if test "$with_skey" = "yes"; then
-	AC_CHECK_LIB(md, MD5Init, [LIBMD=-lmd])
-	AC_CHECK_LIB(skey, skeychallenge, [LIBSKEY=-lskey],
-		[AC_MSG_ERROR([liskey missing. You can download S/Key source code from http://rsync1.it.gentoo.org/gentoo/distfiles/skey-1.1.5.tar.bz2])])
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-echo "	S/Key support:			$with_skey"
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-echo

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+	tags-am uninstall uninstall-am
+
+.PRECIOUS: Makefile
+
+
+# Tell versions [3.59,3.63) of GNU make to not export all variables.
+# Otherwise a system limit (for SysV at least) may be exceeded.
+.NOEXPORT:

contrib/adduser-old.c

@@ -4,14 +4,14 @@
 ** --marekm
 **
 ** 02/26/96
-** modified to call shadow utils (useradd,chage,passwd) on shadowed 
+** modified to call shadow utils (useradd,chage,passwd) on shadowed
 ** systems - Cristian Gafton, gafton@sorosis.ro
 **
 ** 6/27/95
 ** shadow-adduser 1.4:
 **
-** now it copies the /etc/skel dir into the person's dir, 
-** makes the mail folders, changed some defaults and made a 'make 
+** now it copies the /etc/skel dir into the person's dir,
+** makes the mail folders, changed some defaults and made a 'make
 ** install' just for the hell of it.
 **
 ** Greg Gallagher
@@ -19,20 +19,20 @@
 **
 ** 1/28/95
 ** shadow-adduser 1.3:
-** 
-** Basically a bug-fix on my additions in 1.2.  Thanx to Terry Stewart 
+**
+** Basically a bug-fix on my additions in 1.2.  Thanks to Terry Stewart
 ** (stew@texas.net) for pointing out one of the many idiotic bugs I introduced.
 ** It was such a stupid bug that I would have never seen it myself.
 **
 **                                Brandon
 *****
 ** 01/27/95
-** 
+**
 ** shadow-adduser 1.2:
 ** I took the C source from adduser-shadow (credits are below) and made
 ** it a little more worthwhile.  Many small changes... Here's
 ** the ones I can remember:
-** 
+**
 ** Removed support for non-shadowed systems (if you don't have shadow,
 **     use the original adduser, don't get this shadow version!)
 ** Added support for the correct /etc/shadow fields (Min days before
@@ -56,7 +56,7 @@
 **                               Brandon
 **                                  photon@usis.com
 **
-***** 
+*****
 ** adduser 1.0: add a new user account (For systems not using shadow)
 ** With a nice little interface and a will to do all the work for you.
 **
@@ -119,14 +119,14 @@
 
 void main()
 {
-	char foo[32];			
+	char foo[32];
 	char uname[9],person[32],dir[32],shell[32];
 	unsigned int group,min_pass,max_pass,warn_pass,user_die;
 	/* the group and uid of the new user */
 	int bad=0,done=0,correct=0,gets_warning=0;
 	char cmd[255];
 	struct group *grp;
-	
+
 	/* flags, in order:
 	* bad to see if the username is in /etc/passwd, or if strange stuff has
 	* been typed if the user might be put in group 0
@@ -137,24 +137,24 @@ void main()
 	*/
 
 	/* The real program starts HERE! */
-  
+
 	if(geteuid()!=0)
 	{
 		printf("It seems you don't have access to add a new user.  Try\n");
 		printf("logging in as root or su root to gain super-user access.\n");
 		exit(1);
 	}
-  
+
 	/* Sanity checks
 	*/
-	
+
 	if (!(grp=getgrgid(DEFAULT_GROUP))){
 		printf("Error: the default group %d does not exist on this system!\n",
 				DEFAULT_GROUP);
 		printf("adduser must be recompiled.\n");
 		exit(1);
-	}; 
- 
+	};
+
 	while(!correct) {		/* loop until a "good" uname is chosen */
 		while(!done) {
 			printf("\nLogin to add (^C to quit): ");
@@ -178,19 +178,19 @@ void main()
 			} else
 				done=1;
 		}; /* done, we have a valid new user name */
-		
+
 		/* all set, get the rest of the stuff */
 		printf("\nEditing information for new user [%s]\n",uname);
-  
+
 		printf("\nFull Name [%s]: ",uname);
 		gets(person);
 		if (!strlen(person)) {
 			bzero(person,sizeof(person));
 			strcpy(person,uname);
 		};
-      
+
 		do {
-			bad=0; 
+			bad=0;
 			printf("GID [%d]: ",DEFAULT_GROUP);
 			gets(foo);
 			if (!strlen(foo))
@@ -220,7 +220,7 @@ void main()
 
 
 		fflush(stdin);
-      
+
 		printf("\nIf home dir ends with a / then [%s] will be appended to it\n",uname);
 		printf("Home Directory [%s/%s]: ",DEFAULT_HOME,uname);
 		fflush(stdout);
@@ -230,37 +230,37 @@ void main()
 			fflush(stdin);
 		} else
 			if (dir[strlen(dir)-1]=='/')
-				sprintf(dir,"%s%s",dir,uname);
+				sprintf(dir+strlen(dir),"%s",uname);
 
 		printf("\nShell [%s]: ",DEFAULT_SHELL);
 		fflush(stdout);
 		gets(shell);
 		if (!strlen(shell))
 			sprintf(shell,"%s",DEFAULT_SHELL);
-      
+
 		printf("\nMin. Password Change Days [0]: ");
 		gets(foo);
 		min_pass=atoi(foo);
-            
+
 		printf("Max. Password Change Days [%d]: ",DEFAULT_MAX_PASS);
 		gets(foo);
 		if (strlen(foo) > 1)
 			max_pass = atoi(foo);
 		else
 			max_pass = DEFAULT_MAX_PASS;
-            
+
 		printf("Password Warning Days [%d]: ",DEFAULT_WARN_PASS);
 		gets(foo);
 		warn_pass = atoi(foo);
 		if (warn_pass==0)
 			warn_pass = DEFAULT_WARN_PASS;
-            
+
 		printf("Days after Password Expiry for Account Locking [%d]: ",DEFAULT_USER_DIE);
 		gets(foo);
 		user_die = atoi(foo);
 		if (user_die == 0)
 			user_die = DEFAULT_USER_DIE;
-      
+
 		printf("\nInformation for new user [%s] [%s]:\n",uname,person);
 		printf("Home directory: [%s] Shell: [%s]\n",dir,shell);
 		printf("GID: [%d]\n",group);
@@ -279,7 +279,7 @@ void main()
 	bzero(cmd,sizeof(cmd));
 	sprintf(cmd,"%s -g %d -d %s -s %s -c \"%s\" -m -k /etc/skel %s",
 			USERADD_PATH,group,dir,shell,person,uname);
-	printf("Calling useradd to add new user:\n%s\n",cmd);  
+	printf("Calling useradd to add new user:\n%s\n",cmd);
 	if(system(cmd)){
 		printf("User add failed!\n");
 		exit(errno);

contrib/adduser.c

@@ -34,7 +34,7 @@
 ** 1/28/95
 ** shadow-adduser 1.3:
 ** 
-** Basically a bug-fix on my additions in 1.2.  Thanx to Terry Stewart 
+** Basically a bug-fix on my additions in 1.2.  Thanks to Terry Stewart 
 ** (stew@texas.net) for pointing out one of the many idiotic bugs I introduced.
 ** It was such a stupid bug that I would have never seen it myself.
 **
@@ -296,7 +296,7 @@ main (void)
 	      sprintf (dir, "%s/%s", DEFAULT_HOME, usrname);
 	    }
 	  else if (dir[strlen (dir) - 1] == '/')
-	    sprintf (dir, "%s%s", dir, usrname);
+	    sprintf (dir+strlen(dir), "%s", usrname);
 	}
       else
 	{

contrib/adduser2.sh

@@ -32,7 +32,7 @@ def_home_dir=/home/users
 # default shell
 def_shell=/bin/tcsh
 
-# Defaul expiration date (mm/dd/yy)
+# Default expiration date (mm/dd/yy)
 def_expire=""
 
 # default dates

contrib/atudel

@@ -1,85 +0,0 @@
-#!/usr/bin/perl
-#
-# Copyright (c) 1996 Brian R. Gaeke
-# All rights reserved.
-#
-# Redistribution and use in source and binary forms, with or without
-# modification, are permitted provided that the following conditions
-# are met:
-# 1. Redistributions of source code must retain the above copyright
-#    notice, this list of conditions and the following disclaimer.
-# 2. Redistributions in binary form must reproduce the above copyright
-#    notice, this list of conditions and the following disclaimer in the
-#    documentation and/or other materials provided with the distribution.
-# 3. All advertising materials mentioning features or use of this software
-#    must display the following acknowledgement:
-#    This product includes software developed by Brian R. Gaeke.
-# 4. The name of the author, Brian R. Gaeke, may not be used to endorse
-#    or promote products derived from this software without specific
-#    prior written permission.
-#
-# THIS SOFTWARE IS PROVIDED BY BRIAN R. GAEKE ``AS IS'' AND ANY EXPRESS
-# OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
-# WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
-# DISCLAIMED.  IN NO EVENT SHALL BRIAN R. GAEKE BE LIABLE FOR ANY DIRECT,
-# INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
-# (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
-# SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
-# HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
-# STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
-# IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
-# POSSIBILITY OF SUCH DAMAGE.
-#
-# Additionally:
-#
-# This software is provided without support and without any obligation
-# on the part of Brian R. Gaeke to assist in its use, correction,
-# modification or enhancement.
-#
-#######################################################################
-#
-# this is atudel, version 2, by Brian R. Gaeke <brg@dgate.org>
-#
-
-require "getopts.pl";
-&Getopts('v');
-$username = shift(@ARGV);
-&usage unless $username;
-
-sub usage
-{
-	print STDERR "atudel - remove all at jobs owned by a user\n";
-	print STDERR "usage: $0 [-v] username\n";
-	exit(1);
-}
-
-# odd. unless getpwnam($uname) doesn't seem to work for $uname eq "root" on
-# my linux system. but this does.
-die "user $username does not exist; stopping"
-	unless defined(getpwnam($username));
-
-print "searching for at jobs owned by user $username ..." if $opt_v;
-
-chdir "/var/spool/atjobs" ||
-	die "can't chdir to /var/spool/atjobs: $!\nstopping";
-opendir(DIR,".") || die "can't opendir(/var/spool/atjobs): $!\nstopping";
-@files = grep(!/^\./,grep(-f,readdir(DIR)));
-closedir DIR;
-
-foreach $x (@files)
-{
-	$owner = (getpwuid((stat($x))[4]))[0];
-	push(@nuke_bait,$x) if $owner eq $username;
-}
-
-if (@nuke_bait)
-{
-	print "removed jobIDs: @{nuke_bait}.\n" if $opt_v;
-	unlink @nuke_bait;
-}
-elsif ($opt_v)
-{
-	print "\n";
-}
-
-exit 0;

contrib/groupmems.shar

@@ -76,36 +76,9 @@ else
   $echo 'x -' extracting 'Makefile' '(text)'
   sed 's/^X//' << 'SHAR_EOF' > 'Makefile' &&
 /*
-# Copyright 2000, International Business Machines, Inc.
-# All rights reserved.
-#
-# original author: George Kraft IV, gk4@us.ibm.com
-#
-# Redistribution and use in source and binary forms, with or without
-# modification, are permitted provided that the following conditions
-# are met:
-#
-# 1. Redistributions of source code must retain the above copyright
-#    notice, this list of conditions and the following disclaimer.
-# 2. Redistributions in binary form must reproduce the above copyright
-#    notice, this list of conditions and the following disclaimer in the
-#    documentation and/or other materials provided with the distribution.
-# 3. Neither the name of International Business Machines, Inc., nor the 
-#    names of its contributors may be used to endorse or promote products 
-#    derived from this software without specific prior written permission.
-#
-# THIS SOFTWARE IS PROVIDED BY INTERNATIONAL BUSINESS MACHINES, INC. AND
-# CONTRIBUTORS ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, 
-# BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS 
-# FOR A PARTICULAR PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL 
-# INTERNATIONAL BUSINESS MACHINES, INC. OR CONTRIBUTORS BE LIABLE
-# FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
-# DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
-# OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
-# HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
-# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
-# OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
-# SUCH DAMAGE.
+# SPDX-FileCopyrightText: 2000, International Business Machines, Inc.
+# SPDX-FileCopyrightText: 2000, George Kraft IV, gk4@us.ibm.com
+# SPDX-License-Identifier: BSD-3-Clause
 # 
 X
 all: groupmems
@@ -143,36 +116,9 @@ else
   $echo 'x -' extracting 'groupmems.c' '(text)'
   sed 's/^X//' << 'SHAR_EOF' > 'groupmems.c' &&
 /*
-X * Copyright 2000, International Business Machines, Inc.
-X * All rights reserved.
-X *
-X * original author: George Kraft IV, gk4@us.ibm.com
-X *
-X * Redistribution and use in source and binary forms, with or without
-X * modification, are permitted provided that the following conditions
-X * are met:
-X *
-X * 1. Redistributions of source code must retain the above copyright
-X *    notice, this list of conditions and the following disclaimer.
-X * 2. Redistributions in binary form must reproduce the above copyright
-X *    notice, this list of conditions and the following disclaimer in the
-X *    documentation and/or other materials provided with the distribution.
-X * 3. Neither the name of International Business Machines, Inc., nor the 
-X *    names of its contributors may be used to endorse or promote products 
-X *    derived from this software without specific prior written permission.
-X *
-X * THIS SOFTWARE IS PROVIDED BY INTERNATIONAL BUSINESS MACHINES, INC. AND
-X * CONTRIBUTORS ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, 
-X * BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS 
-X * FOR A PARTICULAR PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL 
-X * INTERNATIONAL BUSINESS MACHINES, INC. OR CONTRIBUTORS BE LIABLE
-X * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
-X * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
-X * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
-X * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
-X * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
-X * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
-X * SUCH DAMAGE.
+X * SPDX-FileCopyrightText: 2000, International Business Machines, Inc.
+X * SPDX-FileCopyrightText: 2000, George Kraft IV, gk4@us.ibm.com
+X * SPDX-License-Identifier: BSD-3-Clause
 X */
 /*
 **
@@ -436,36 +382,9 @@ else
   $echo 'x -' extracting 'groupmems.8' '(text)'
   sed 's/^X//' << 'SHAR_EOF' > 'groupmems.8' &&
 X.\"
-X.\" Copyright 2000, International Business Machines, Inc.
-X.\" All rights reserved.
-X.\"
-X.\" original author: George Kraft IV, gk4@us.ibm.com
-X.\"
-X.\" Redistribution and use in source and binary forms, with or without
-X.\" modification, are permitted provided that the following conditions
-X.\" are met:
-X.\"
-X.\" 1. Redistributions of source code must retain the above copyright
-X.\"    notice, this list of conditions and the following disclaimer.
-X.\" 2. Redistributions in binary form must reproduce the above copyright
-X.\"    notice, this list of conditions and the following disclaimer in the
-X.\"    documentation and/or other materials provided with the distribution.
-X.\" 3. Neither the name of International Business Machines, Inc., nor the 
-X.\"    names of its contributors may be used to endorse or promote products 
-X.\"    derived from this software without specific prior written permission.
-X.\"
-X.\" THIS SOFTWARE IS PROVIDED BY INTERNATIONAL BUSINESS MACHINES, INC. AND
-X.\" CONTRIBUTORS ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, 
-X.\" BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS 
-X.\" FOR A PARTICULAR PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL 
-X.\" INTERNATIONAL BUSINESS MACHINES, INC. OR CONTRIBUTORS BE LIABLE
-X.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
-X.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
-X.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
-X.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
-X.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
-X.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
-X.\" SUCH DAMAGE.
+X.\" SPDX-FileCopyrightText: 2000, International Business Machines, Inc.
+X.\" SPDX-FileCopyrightText: 2000, George Kraft IV, gk4@us.ibm.com
+X.\" SPDX-License-Identifier: BSD-3-Clause
 X.\"
 X.\" $Id$
 X.\"
@@ -480,7 +399,7 @@ X.B groupmems
 \fB-D\fR |
 [\fB-g\fI group_name \fR]
 X.SH DESCRIPTION
-The \fBgroupmems\fR utility allows a user to administer his/her own
+The \fBgroupmems\fR utility allows a user to administer their own
 group membership list without the requirement of superuser privileges.
 The \fBgroupmems\fR utility is for systems that configure its users to
 be in their own name sake primary group (i.e., guest / guest).

contrib/shadow-anonftp.patch

@@ -2,7 +2,7 @@ Hello Marek,
 
 I have created a diffile against the 980403 release that adds
 functionality to newusers for automatic handling of users with only
-anonomous ftp login (using the guestgroup feature in ftpaccess, which
+anonymous ftp login (using the guestgroup feature in ftpaccess, which
 means that the users home directory looks like '/home/user/./'). It also
 adds a commandline argument to specify an initial directory structure
 for such users, with a tarball normally containing the bin,lib,etc

depcomp

@@ -0,0 +1,791 @@
+#! /bin/sh
+# depcomp - compile a program generating dependencies as side-effects
+
+scriptversion=2018-03-07.03; # UTC
+
+# Copyright (C) 1999-2021 Free Software Foundation, Inc.
+
+# This program is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 2, or (at your option)
+# any later version.
+
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+
+# You should have received a copy of the GNU General Public License
+# along with this program.  If not, see <https://www.gnu.org/licenses/>.
+
+# As a special exception to the GNU General Public License, if you
+# distribute this file as part of a program that contains a
+# configuration script generated by Autoconf, you may include it under
+# the same distribution terms that you use for the rest of that program.
+
+# Originally written by Alexandre Oliva <oliva@dcc.unicamp.br>.
+
+case $1 in
+  '')
+    echo "$0: No command.  Try '$0 --help' for more information." 1>&2
+    exit 1;
+    ;;
+  -h | --h*)
+    cat <<\EOF
+Usage: depcomp [--help] [--version] PROGRAM [ARGS]
+
+Run PROGRAMS ARGS to compile a file, generating dependencies
+as side-effects.
+
+Environment variables:
+  depmode     Dependency tracking mode.
+  source      Source file read by 'PROGRAMS ARGS'.
+  object      Object file output by 'PROGRAMS ARGS'.
+  DEPDIR      directory where to store dependencies.
+  depfile     Dependency file to output.
+  tmpdepfile  Temporary file to use when outputting dependencies.
+  libtool     Whether libtool is used (yes/no).
+
+Report bugs to <bug-automake@gnu.org>.
+EOF
+    exit $?
+    ;;
+  -v | --v*)
+    echo "depcomp $scriptversion"
+    exit $?
+    ;;
+esac
+
+# Get the directory component of the given path, and save it in the
+# global variables '$dir'.  Note that this directory component will
+# be either empty or ending with a '/' character.  This is deliberate.
+set_dir_from ()
+{
+  case $1 in
+    */*) dir=`echo "$1" | sed -e 's|/[^/]*$|/|'`;;
+      *) dir=;;
+  esac
+}
+
+# Get the suffix-stripped basename of the given path, and save it the
+# global variable '$base'.
+set_base_from ()
+{
+  base=`echo "$1" | sed -e 's|^.*/||' -e 's/\.[^.]*$//'`
+}
+
+# If no dependency file was actually created by the compiler invocation,
+# we still have to create a dummy depfile, to avoid errors with the
+# Makefile "include basename.Plo" scheme.
+make_dummy_depfile ()
+{
+  echo "#dummy" > "$depfile"
+}
+
+# Factor out some common post-processing of the generated depfile.
+# Requires the auxiliary global variable '$tmpdepfile' to be set.
+aix_post_process_depfile ()
+{
+  # If the compiler actually managed to produce a dependency file,
+  # post-process it.
+  if test -f "$tmpdepfile"; then
+    # Each line is of the form 'foo.o: dependency.h'.
+    # Do two passes, one to just change these to
+    #   $object: dependency.h
+    # and one to simply output
+    #   dependency.h:
+    # which is needed to avoid the deleted-header problem.
+    { sed -e "s,^.*\.[$lower]*:,$object:," < "$tmpdepfile"
+      sed -e "s,^.*\.[$lower]*:[$tab ]*,," -e 's,$,:,' < "$tmpdepfile"
+    } > "$depfile"
+    rm -f "$tmpdepfile"
+  else
+    make_dummy_depfile
+  fi
+}
+
+# A tabulation character.
+tab='	'
+# A newline character.
+nl='
+'
+# Character ranges might be problematic outside the C locale.
+# These definitions help.
+upper=ABCDEFGHIJKLMNOPQRSTUVWXYZ
+lower=abcdefghijklmnopqrstuvwxyz
+digits=0123456789
+alpha=${upper}${lower}
+
+if test -z "$depmode" || test -z "$source" || test -z "$object"; then
+  echo "depcomp: Variables source, object and depmode must be set" 1>&2
+  exit 1
+fi
+
+# Dependencies for sub/bar.o or sub/bar.obj go into sub/.deps/bar.Po.
+depfile=${depfile-`echo "$object" |
+  sed 's|[^\\/]*$|'${DEPDIR-.deps}'/&|;s|\.\([^.]*\)$|.P\1|;s|Pobj$|Po|'`}
+tmpdepfile=${tmpdepfile-`echo "$depfile" | sed 's/\.\([^.]*\)$/.T\1/'`}
+
+rm -f "$tmpdepfile"
+
+# Avoid interferences from the environment.
+gccflag= dashmflag=
+
+# Some modes work just like other modes, but use different flags.  We
+# parameterize here, but still list the modes in the big case below,
+# to make depend.m4 easier to write.  Note that we *cannot* use a case
+# here, because this file can only contain one case statement.
+if test "$depmode" = hp; then
+  # HP compiler uses -M and no extra arg.
+  gccflag=-M
+  depmode=gcc
+fi
+
+if test "$depmode" = dashXmstdout; then
+  # This is just like dashmstdout with a different argument.
+  dashmflag=-xM
+  depmode=dashmstdout
+fi
+
+cygpath_u="cygpath -u -f -"
+if test "$depmode" = msvcmsys; then
+  # This is just like msvisualcpp but w/o cygpath translation.
+  # Just convert the backslash-escaped backslashes to single forward
+  # slashes to satisfy depend.m4
+  cygpath_u='sed s,\\\\,/,g'
+  depmode=msvisualcpp
+fi
+
+if test "$depmode" = msvc7msys; then
+  # This is just like msvc7 but w/o cygpath translation.
+  # Just convert the backslash-escaped backslashes to single forward
+  # slashes to satisfy depend.m4
+  cygpath_u='sed s,\\\\,/,g'
+  depmode=msvc7
+fi
+
+if test "$depmode" = xlc; then
+  # IBM C/C++ Compilers xlc/xlC can output gcc-like dependency information.
+  gccflag=-qmakedep=gcc,-MF
+  depmode=gcc
+fi
+
+case "$depmode" in
+gcc3)
+## gcc 3 implements dependency tracking that does exactly what
+## we want.  Yay!  Note: for some reason libtool 1.4 doesn't like
+## it if -MD -MP comes after the -MF stuff.  Hmm.
+## Unfortunately, FreeBSD c89 acceptance of flags depends upon
+## the command line argument order; so add the flags where they
+## appear in depend2.am.  Note that the slowdown incurred here
+## affects only configure: in makefiles, %FASTDEP% shortcuts this.
+  for arg
+  do
+    case $arg in
+    -c) set fnord "$@" -MT "$object" -MD -MP -MF "$tmpdepfile" "$arg" ;;
+    *)  set fnord "$@" "$arg" ;;
+    esac
+    shift # fnord
+    shift # $arg
+  done
+  "$@"
+  stat=$?
+  if test $stat -ne 0; then
+    rm -f "$tmpdepfile"
+    exit $stat
+  fi
+  mv "$tmpdepfile" "$depfile"
+  ;;
+
+gcc)
+## Note that this doesn't just cater to obsosete pre-3.x GCC compilers.
+## but also to in-use compilers like IMB xlc/xlC and the HP C compiler.
+## (see the conditional assignment to $gccflag above).
+## There are various ways to get dependency output from gcc.  Here's
+## why we pick this rather obscure method:
+## - Don't want to use -MD because we'd like the dependencies to end
+##   up in a subdir.  Having to rename by hand is ugly.
+##   (We might end up doing this anyway to support other compilers.)
+## - The DEPENDENCIES_OUTPUT environment variable makes gcc act like
+##   -MM, not -M (despite what the docs say).  Also, it might not be
+##   supported by the other compilers which use the 'gcc' depmode.
+## - Using -M directly means running the compiler twice (even worse
+##   than renaming).
+  if test -z "$gccflag"; then
+    gccflag=-MD,
+  fi
+  "$@" -Wp,"$gccflag$tmpdepfile"
+  stat=$?
+  if test $stat -ne 0; then
+    rm -f "$tmpdepfile"
+    exit $stat
+  fi
+  rm -f "$depfile"
+  echo "$object : \\" > "$depfile"
+  # The second -e expression handles DOS-style file names with drive
+  # letters.
+  sed -e 's/^[^:]*: / /' \
+      -e 's/^['$alpha']:\/[^:]*: / /' < "$tmpdepfile" >> "$depfile"
+## This next piece of magic avoids the "deleted header file" problem.
+## The problem is that when a header file which appears in a .P file
+## is deleted, the dependency causes make to die (because there is
+## typically no way to rebuild the header).  We avoid this by adding
+## dummy dependencies for each header file.  Too bad gcc doesn't do
+## this for us directly.
+## Some versions of gcc put a space before the ':'.  On the theory
+## that the space means something, we add a space to the output as
+## well.  hp depmode also adds that space, but also prefixes the VPATH
+## to the object.  Take care to not repeat it in the output.
+## Some versions of the HPUX 10.20 sed can't process this invocation
+## correctly.  Breaking it into two sed invocations is a workaround.
+  tr ' ' "$nl" < "$tmpdepfile" \
+    | sed -e 's/^\\$//' -e '/^$/d' -e "s|.*$object$||" -e '/:$/d' \
+    | sed -e 's/$/ :/' >> "$depfile"
+  rm -f "$tmpdepfile"
+  ;;
+
+hp)
+  # This case exists only to let depend.m4 do its work.  It works by
+  # looking at the text of this script.  This case will never be run,
+  # since it is checked for above.
+  exit 1
+  ;;
+
+sgi)
+  if test "$libtool" = yes; then
+    "$@" "-Wp,-MDupdate,$tmpdepfile"
+  else
+    "$@" -MDupdate "$tmpdepfile"
+  fi
+  stat=$?
+  if test $stat -ne 0; then
+    rm -f "$tmpdepfile"
+    exit $stat
+  fi
+  rm -f "$depfile"
+
+  if test -f "$tmpdepfile"; then  # yes, the sourcefile depend on other files
+    echo "$object : \\" > "$depfile"
+    # Clip off the initial element (the dependent).  Don't try to be
+    # clever and replace this with sed code, as IRIX sed won't handle
+    # lines with more than a fixed number of characters (4096 in
+    # IRIX 6.2 sed, 8192 in IRIX 6.5).  We also remove comment lines;
+    # the IRIX cc adds comments like '#:fec' to the end of the
+    # dependency line.
+    tr ' ' "$nl" < "$tmpdepfile" \
+      | sed -e 's/^.*\.o://' -e 's/#.*$//' -e '/^$/ d' \
+      | tr "$nl" ' ' >> "$depfile"
+    echo >> "$depfile"
+    # The second pass generates a dummy entry for each header file.
+    tr ' ' "$nl" < "$tmpdepfile" \
+      | sed -e 's/^.*\.o://' -e 's/#.*$//' -e '/^$/ d' -e 's/$/:/' \
+      >> "$depfile"
+  else
+    make_dummy_depfile
+  fi
+  rm -f "$tmpdepfile"
+  ;;
+
+xlc)
+  # This case exists only to let depend.m4 do its work.  It works by
+  # looking at the text of this script.  This case will never be run,
+  # since it is checked for above.
+  exit 1
+  ;;
+
+aix)
+  # The C for AIX Compiler uses -M and outputs the dependencies
+  # in a .u file.  In older versions, this file always lives in the
+  # current directory.  Also, the AIX compiler puts '$object:' at the
+  # start of each line; $object doesn't have directory information.
+  # Version 6 uses the directory in both cases.
+  set_dir_from "$object"
+  set_base_from "$object"
+  if test "$libtool" = yes; then
+    tmpdepfile1=$dir$base.u
+    tmpdepfile2=$base.u
+    tmpdepfile3=$dir.libs/$base.u
+    "$@" -Wc,-M
+  else
+    tmpdepfile1=$dir$base.u
+    tmpdepfile2=$dir$base.u
+    tmpdepfile3=$dir$base.u
+    "$@" -M
+  fi
+  stat=$?
+  if test $stat -ne 0; then
+    rm -f "$tmpdepfile1" "$tmpdepfile2" "$tmpdepfile3"
+    exit $stat
+  fi
+
+  for tmpdepfile in "$tmpdepfile1" "$tmpdepfile2" "$tmpdepfile3"
+  do
+    test -f "$tmpdepfile" && break
+  done
+  aix_post_process_depfile
+  ;;
+
+tcc)
+  # tcc (Tiny C Compiler) understand '-MD -MF file' since version 0.9.26
+  # FIXME: That version still under development at the moment of writing.
+  #        Make that this statement remains true also for stable, released
+  #        versions.
+  # It will wrap lines (doesn't matter whether long or short) with a
+  # trailing '\', as in:
+  #
+  #   foo.o : \
+  #    foo.c \
+  #    foo.h \
+  #
+  # It will put a trailing '\' even on the last line, and will use leading
+  # spaces rather than leading tabs (at least since its commit 0394caf7
+  # "Emit spaces for -MD").
+  "$@" -MD -MF "$tmpdepfile"
+  stat=$?
+  if test $stat -ne 0; then
+    rm -f "$tmpdepfile"
+    exit $stat
+  fi
+  rm -f "$depfile"
+  # Each non-empty line is of the form 'foo.o : \' or ' dep.h \'.
+  # We have to change lines of the first kind to '$object: \'.
+  sed -e "s|.*:|$object :|" < "$tmpdepfile" > "$depfile"
+  # And for each line of the second kind, we have to emit a 'dep.h:'
+  # dummy dependency, to avoid the deleted-header problem.
+  sed -n -e 's|^  *\(.*\) *\\$|\1:|p' < "$tmpdepfile" >> "$depfile"
+  rm -f "$tmpdepfile"
+  ;;
+
+## The order of this option in the case statement is important, since the
+## shell code in configure will try each of these formats in the order
+## listed in this file.  A plain '-MD' option would be understood by many
+## compilers, so we must ensure this comes after the gcc and icc options.
+pgcc)
+  # Portland's C compiler understands '-MD'.
+  # Will always output deps to 'file.d' where file is the root name of the
+  # source file under compilation, even if file resides in a subdirectory.
+  # The object file name does not affect the name of the '.d' file.
+  # pgcc 10.2 will output
+  #    foo.o: sub/foo.c sub/foo.h
+  # and will wrap long lines using '\' :
+  #    foo.o: sub/foo.c ... \
+  #     sub/foo.h ... \
+  #     ...
+  set_dir_from "$object"
+  # Use the source, not the object, to determine the base name, since
+  # that's sadly what pgcc will do too.
+  set_base_from "$source"
+  tmpdepfile=$base.d
+
+  # For projects that build the same source file twice into different object
+  # files, the pgcc approach of using the *source* file root name can cause
+  # problems in parallel builds.  Use a locking strategy to avoid stomping on
+  # the same $tmpdepfile.
+  lockdir=$base.d-lock
+  trap "
+    echo '$0: caught signal, cleaning up...' >&2
+    rmdir '$lockdir'
+    exit 1
+  " 1 2 13 15
+  numtries=100
+  i=$numtries
+  while test $i -gt 0; do
+    # mkdir is a portable test-and-set.
+    if mkdir "$lockdir" 2>/dev/null; then
+      # This process acquired the lock.
+      "$@" -MD
+      stat=$?
+      # Release the lock.
+      rmdir "$lockdir"
+      break
+    else
+      # If the lock is being held by a different process, wait
+      # until the winning process is done or we timeout.
+      while test -d "$lockdir" && test $i -gt 0; do
+        sleep 1
+        i=`expr $i - 1`
+      done
+    fi
+    i=`expr $i - 1`
+  done
+  trap - 1 2 13 15
+  if test $i -le 0; then
+    echo "$0: failed to acquire lock after $numtries attempts" >&2
+    echo "$0: check lockdir '$lockdir'" >&2
+    exit 1
+  fi
+
+  if test $stat -ne 0; then
+    rm -f "$tmpdepfile"
+    exit $stat
+  fi
+  rm -f "$depfile"
+  # Each line is of the form `foo.o: dependent.h',
+  # or `foo.o: dep1.h dep2.h \', or ` dep3.h dep4.h \'.
+  # Do two passes, one to just change these to
+  # `$object: dependent.h' and one to simply `dependent.h:'.
+  sed "s,^[^:]*:,$object :," < "$tmpdepfile" > "$depfile"
+  # Some versions of the HPUX 10.20 sed can't process this invocation
+  # correctly.  Breaking it into two sed invocations is a workaround.
+  sed 's,^[^:]*: \(.*\)$,\1,;s/^\\$//;/^$/d;/:$/d' < "$tmpdepfile" \
+    | sed -e 's/$/ :/' >> "$depfile"
+  rm -f "$tmpdepfile"
+  ;;
+
+hp2)
+  # The "hp" stanza above does not work with aCC (C++) and HP's ia64
+  # compilers, which have integrated preprocessors.  The correct option
+  # to use with these is +Maked; it writes dependencies to a file named
+  # 'foo.d', which lands next to the object file, wherever that
+  # happens to be.
+  # Much of this is similar to the tru64 case; see comments there.
+  set_dir_from  "$object"
+  set_base_from "$object"
+  if test "$libtool" = yes; then
+    tmpdepfile1=$dir$base.d
+    tmpdepfile2=$dir.libs/$base.d
+    "$@" -Wc,+Maked
+  else
+    tmpdepfile1=$dir$base.d
+    tmpdepfile2=$dir$base.d
+    "$@" +Maked
+  fi
+  stat=$?
+  if test $stat -ne 0; then
+     rm -f "$tmpdepfile1" "$tmpdepfile2"
+     exit $stat
+  fi
+
+  for tmpdepfile in "$tmpdepfile1" "$tmpdepfile2"
+  do
+    test -f "$tmpdepfile" && break
+  done
+  if test -f "$tmpdepfile"; then
+    sed -e "s,^.*\.[$lower]*:,$object:," "$tmpdepfile" > "$depfile"
+    # Add 'dependent.h:' lines.
+    sed -ne '2,${
+               s/^ *//
+               s/ \\*$//
+               s/$/:/
+               p
+             }' "$tmpdepfile" >> "$depfile"
+  else
+    make_dummy_depfile
+  fi
+  rm -f "$tmpdepfile" "$tmpdepfile2"
+  ;;
+
+tru64)
+  # The Tru64 compiler uses -MD to generate dependencies as a side
+  # effect.  'cc -MD -o foo.o ...' puts the dependencies into 'foo.o.d'.
+  # At least on Alpha/Redhat 6.1, Compaq CCC V6.2-504 seems to put
+  # dependencies in 'foo.d' instead, so we check for that too.
+  # Subdirectories are respected.
+  set_dir_from  "$object"
+  set_base_from "$object"
+
+  if test "$libtool" = yes; then
+    # Libtool generates 2 separate objects for the 2 libraries.  These
+    # two compilations output dependencies in $dir.libs/$base.o.d and
+    # in $dir$base.o.d.  We have to check for both files, because
+    # one of the two compilations can be disabled.  We should prefer
+    # $dir$base.o.d over $dir.libs/$base.o.d because the latter is
+    # automatically cleaned when .libs/ is deleted, while ignoring
+    # the former would cause a distcleancheck panic.
+    tmpdepfile1=$dir$base.o.d          # libtool 1.5
+    tmpdepfile2=$dir.libs/$base.o.d    # Likewise.
+    tmpdepfile3=$dir.libs/$base.d      # Compaq CCC V6.2-504
+    "$@" -Wc,-MD
+  else
+    tmpdepfile1=$dir$base.d
+    tmpdepfile2=$dir$base.d
+    tmpdepfile3=$dir$base.d
+    "$@" -MD
+  fi
+
+  stat=$?
+  if test $stat -ne 0; then
+    rm -f "$tmpdepfile1" "$tmpdepfile2" "$tmpdepfile3"
+    exit $stat
+  fi
+
+  for tmpdepfile in "$tmpdepfile1" "$tmpdepfile2" "$tmpdepfile3"
+  do
+    test -f "$tmpdepfile" && break
+  done
+  # Same post-processing that is required for AIX mode.
+  aix_post_process_depfile
+  ;;
+
+msvc7)
+  if test "$libtool" = yes; then
+    showIncludes=-Wc,-showIncludes
+  else
+    showIncludes=-showIncludes
+  fi
+  "$@" $showIncludes > "$tmpdepfile"
+  stat=$?
+  grep -v '^Note: including file: ' "$tmpdepfile"
+  if test $stat -ne 0; then
+    rm -f "$tmpdepfile"
+    exit $stat
+  fi
+  rm -f "$depfile"
+  echo "$object : \\" > "$depfile"
+  # The first sed program below extracts the file names and escapes
+  # backslashes for cygpath.  The second sed program outputs the file
+  # name when reading, but also accumulates all include files in the
+  # hold buffer in order to output them again at the end.  This only
+  # works with sed implementations that can handle large buffers.
+  sed < "$tmpdepfile" -n '
+/^Note: including file:  *\(.*\)/ {
+  s//\1/
+  s/\\/\\\\/g
+  p
+}' | $cygpath_u | sort -u | sed -n '
+s/ /\\ /g
+s/\(.*\)/'"$tab"'\1 \\/p
+s/.\(.*\) \\/\1:/
+H
+$ {
+  s/.*/'"$tab"'/
+  G
+  p
+}' >> "$depfile"
+  echo >> "$depfile" # make sure the fragment doesn't end with a backslash
+  rm -f "$tmpdepfile"
+  ;;
+
+msvc7msys)
+  # This case exists only to let depend.m4 do its work.  It works by
+  # looking at the text of this script.  This case will never be run,
+  # since it is checked for above.
+  exit 1
+  ;;
+
+#nosideeffect)
+  # This comment above is used by automake to tell side-effect
+  # dependency tracking mechanisms from slower ones.
+
+dashmstdout)
+  # Important note: in order to support this mode, a compiler *must*
+  # always write the preprocessed file to stdout, regardless of -o.
+  "$@" || exit $?
+
+  # Remove the call to Libtool.
+  if test "$libtool" = yes; then
+    while test "X$1" != 'X--mode=compile'; do
+      shift
+    done
+    shift
+  fi
+
+  # Remove '-o $object'.
+  IFS=" "
+  for arg
+  do
+    case $arg in
+    -o)
+      shift
+      ;;
+    $object)
+      shift
+      ;;
+    *)
+      set fnord "$@" "$arg"
+      shift # fnord
+      shift # $arg
+      ;;
+    esac
+  done
+
+  test -z "$dashmflag" && dashmflag=-M
+  # Require at least two characters before searching for ':'
+  # in the target name.  This is to cope with DOS-style filenames:
+  # a dependency such as 'c:/foo/bar' could be seen as target 'c' otherwise.
+  "$@" $dashmflag |
+    sed "s|^[$tab ]*[^:$tab ][^:][^:]*:[$tab ]*|$object: |" > "$tmpdepfile"
+  rm -f "$depfile"
+  cat < "$tmpdepfile" > "$depfile"
+  # Some versions of the HPUX 10.20 sed can't process this sed invocation
+  # correctly.  Breaking it into two sed invocations is a workaround.
+  tr ' ' "$nl" < "$tmpdepfile" \
+    | sed -e 's/^\\$//' -e '/^$/d' -e '/:$/d' \
+    | sed -e 's/$/ :/' >> "$depfile"
+  rm -f "$tmpdepfile"
+  ;;
+
+dashXmstdout)
+  # This case only exists to satisfy depend.m4.  It is never actually
+  # run, as this mode is specially recognized in the preamble.
+  exit 1
+  ;;
+
+makedepend)
+  "$@" || exit $?
+  # Remove any Libtool call
+  if test "$libtool" = yes; then
+    while test "X$1" != 'X--mode=compile'; do
+      shift
+    done
+    shift
+  fi
+  # X makedepend
+  shift
+  cleared=no eat=no
+  for arg
+  do
+    case $cleared in
+    no)
+      set ""; shift
+      cleared=yes ;;
+    esac
+    if test $eat = yes; then
+      eat=no
+      continue
+    fi
+    case "$arg" in
+    -D*|-I*)
+      set fnord "$@" "$arg"; shift ;;
+    # Strip any option that makedepend may not understand.  Remove
+    # the object too, otherwise makedepend will parse it as a source file.
+    -arch)
+      eat=yes ;;
+    -*|$object)
+      ;;
+    *)
+      set fnord "$@" "$arg"; shift ;;
+    esac
+  done
+  obj_suffix=`echo "$object" | sed 's/^.*\././'`
+  touch "$tmpdepfile"
+  ${MAKEDEPEND-makedepend} -o"$obj_suffix" -f"$tmpdepfile" "$@"
+  rm -f "$depfile"
+  # makedepend may prepend the VPATH from the source file name to the object.
+  # No need to regex-escape $object, excess matching of '.' is harmless.
+  sed "s|^.*\($object *:\)|\1|" "$tmpdepfile" > "$depfile"
+  # Some versions of the HPUX 10.20 sed can't process the last invocation
+  # correctly.  Breaking it into two sed invocations is a workaround.
+  sed '1,2d' "$tmpdepfile" \
+    | tr ' ' "$nl" \
+    | sed -e 's/^\\$//' -e '/^$/d' -e '/:$/d' \
+    | sed -e 's/$/ :/' >> "$depfile"
+  rm -f "$tmpdepfile" "$tmpdepfile".bak
+  ;;
+
+cpp)
+  # Important note: in order to support this mode, a compiler *must*
+  # always write the preprocessed file to stdout.
+  "$@" || exit $?
+
+  # Remove the call to Libtool.
+  if test "$libtool" = yes; then
+    while test "X$1" != 'X--mode=compile'; do
+      shift
+    done
+    shift
+  fi
+
+  # Remove '-o $object'.
+  IFS=" "
+  for arg
+  do
+    case $arg in
+    -o)
+      shift
+      ;;
+    $object)
+      shift
+      ;;
+    *)
+      set fnord "$@" "$arg"
+      shift # fnord
+      shift # $arg
+      ;;
+    esac
+  done
+
+  "$@" -E \
+    | sed -n -e '/^# [0-9][0-9]* "\([^"]*\)".*/ s:: \1 \\:p' \
+             -e '/^#line [0-9][0-9]* "\([^"]*\)".*/ s:: \1 \\:p' \
+    | sed '$ s: \\$::' > "$tmpdepfile"
+  rm -f "$depfile"
+  echo "$object : \\" > "$depfile"
+  cat < "$tmpdepfile" >> "$depfile"
+  sed < "$tmpdepfile" '/^$/d;s/^ //;s/ \\$//;s/$/ :/' >> "$depfile"
+  rm -f "$tmpdepfile"
+  ;;
+
+msvisualcpp)
+  # Important note: in order to support this mode, a compiler *must*
+  # always write the preprocessed file to stdout.
+  "$@" || exit $?
+
+  # Remove the call to Libtool.
+  if test "$libtool" = yes; then
+    while test "X$1" != 'X--mode=compile'; do
+      shift
+    done
+    shift
+  fi
+
+  IFS=" "
+  for arg
+  do
+    case "$arg" in
+    -o)
+      shift
+      ;;
+    $object)
+      shift
+      ;;
+    "-Gm"|"/Gm"|"-Gi"|"/Gi"|"-ZI"|"/ZI")
+        set fnord "$@"
+        shift
+        shift
+        ;;
+    *)
+        set fnord "$@" "$arg"
+        shift
+        shift
+        ;;
+    esac
+  done
+  "$@" -E 2>/dev/null |
+  sed -n '/^#line [0-9][0-9]* "\([^"]*\)"/ s::\1:p' | $cygpath_u | sort -u > "$tmpdepfile"
+  rm -f "$depfile"
+  echo "$object : \\" > "$depfile"
+  sed < "$tmpdepfile" -n -e 's% %\\ %g' -e '/^\(.*\)$/ s::'"$tab"'\1 \\:p' >> "$depfile"
+  echo "$tab" >> "$depfile"
+  sed < "$tmpdepfile" -n -e 's% %\\ %g' -e '/^\(.*\)$/ s::\1\::p' >> "$depfile"
+  rm -f "$tmpdepfile"
+  ;;
+
+msvcmsys)
+  # This case exists only to let depend.m4 do its work.  It works by
+  # looking at the text of this script.  This case will never be run,
+  # since it is checked for above.
+  exit 1
+  ;;
+
+none)
+  exec "$@"
+  ;;
+
+*)
+  echo "Unknown depmode $depmode" 1>&2
+  exit 1
+  ;;
+esac
+
+exit 0
+
+# Local Variables:
+# mode: shell-script
+# sh-indentation: 2
+# eval: (add-hook 'before-save-hook 'time-stamp)
+# time-stamp-start: "scriptversion="
+# time-stamp-format: "%:y-%02m-%02d.%02H"
+# time-stamp-time-zone: "UTC0"
+# time-stamp-end: "; # UTC"
+# End:

doc/HOWTO

@@ -1311,7 +1311,7 @@
 
   This means that fred's password is valid, it was last changed on
   03/04/96, it can be changed at any time, it expires after 60 days,
-  fred will not be warned, and and the account won't be disabled when
+  fred will not be warned, and the account won't be disabled when
   the password expires.
 
   This simply means that if fred logs in after the password expires, he
@@ -1487,7 +1487,7 @@
 
   If a user logs into a line that is listed in /etc/dialups, and his
   shell is listed in the file /etc/d_passwd he will be allowed access
-  only by suppling the correct password.
+  only by supplying the correct password.
 
   Another useful purpose for using dial-up passwords might be to setup a
   line that only allows a certain type of connect (perhaps a PPP or UUCP

doc/Makefile.in

@@ -0,0 +1,495 @@
+# Makefile.in generated by automake 1.16.5 from Makefile.am.
+# @configure_input@
+
+# Copyright (C) 1994-2021 Free Software Foundation, Inc.
+
+# This Makefile.in is free software; the Free Software Foundation
+# gives unlimited permission to copy and/or distribute it,
+# with or without modifications, as long as this notice is preserved.
+
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY, to the extent permitted by law; without
+# even the implied warranty of MERCHANTABILITY or FITNESS FOR A
+# PARTICULAR PURPOSE.
+
+@SET_MAKE@
+
+# This is a dummy Makefile.am to get automake work flawlessly,
+# and also cooperate to make a distribution for `make dist'
+VPATH = @srcdir@
+am__is_gnu_make = { \
+  if test -z '$(MAKELEVEL)'; then \
+    false; \
+  elif test -n '$(MAKE_HOST)'; then \
+    true; \
+  elif test -n '$(MAKE_VERSION)' && test -n '$(CURDIR)'; then \
+    true; \
+  else \
+    false; \
+  fi; \
+}
+am__make_running_with_option = \
+  case $${target_option-} in \
+      ?) ;; \
+      *) echo "am__make_running_with_option: internal error: invalid" \
+              "target option '$${target_option-}' specified" >&2; \
+         exit 1;; \
+  esac; \
+  has_opt=no; \
+  sane_makeflags=$$MAKEFLAGS; \
+  if $(am__is_gnu_make); then \
+    sane_makeflags=$$MFLAGS; \
+  else \
+    case $$MAKEFLAGS in \
+      *\\[\ \	]*) \
+        bs=\\; \
+        sane_makeflags=`printf '%s\n' "$$MAKEFLAGS" \
+          | sed "s/$$bs$$bs[$$bs $$bs	]*//g"`;; \
+    esac; \
+  fi; \
+  skip_next=no; \
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doc/README.limits

@@ -15,7 +15,7 @@ Changes:
 		- code merged into lmain.c --cristiang
 
 TODO:	- support groups in the limits file
-	  (only usernames are supported at this momment :-( )
+	  (only usernames are supported at this moment :-( )
 
 Setting user limits for shadow login program
 
@@ -63,4 +63,3 @@ To completely disable limits for a user, a single dash (-) will do.
 Also, please note that all limit settings are set PER LOGIN.  They are
 not global, nor are they permanent.  Perhaps global limits will come, but
 for now this will have to do ;)
-

doc/README.platforms

@@ -3,7 +3,7 @@
 # This is the current (still incomplete) list of platforms this
 # package has been verified to work on.  Additions (preferably
 # in the format as described below) are welcome.  Thanks!
-# 
+#
 # V: last version reported to work
 # H: host type
 # L: Linux libc version

doc/WISHLIST

@@ -31,12 +31,9 @@ New ideas to add to this list are welcome, too.  --marekm
 - new option for /etc/suauth: don't load user's environment (force "su -")
   suggested by Ulisses Alonso Camaro
 - find out why recent releases won't compile on Solaris
-- newusers UID/GID selection algorithm should be the same as useradd
-  (and use UID_MIN, UID_MAX from login.defs)
 - newusers should be able to copy /etc/skel to the new home directory
   (like useradd)
 - add directories where other packages can add hooks for package-specific
   per-user configuration, to be executed with run-parts. Some hooks should
   be executed at package install time for existing users, likewise for
   package removal and possibly modification.  (Debian Bug#36019)
-

etc/Makefile.am

@@ -4,8 +4,7 @@
 sysconf_DATA = login.defs
 
 defaultdir = $(sysconfdir)/default
-default_DATA = \
-	useradd
+default_DATA =
 
 nonpam_files = \
 	limits \

etc/Makefile.in

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+	esac; \
+	for file in $$dist_files; do \
+	  if test -f $$file || test -d $$file; then d=.; else d=$(srcdir); fi; \
+	  if test -d $$d/$$file; then \
+	    dir=`echo "/$$file" | sed -e 's,/[^/]*$$,,'`; \
+	    if test -d "$(distdir)/$$file"; then \
+	      find "$(distdir)/$$file" -type d ! -perm -700 -exec chmod u+rwx {} \;; \
+	    fi; \
+	    if test -d $(srcdir)/$$file && test $$d != $(srcdir); then \
+	      cp -fpR $(srcdir)/$$file "$(distdir)$$dir" || exit 1; \
+	      find "$(distdir)/$$file" -type d ! -perm -700 -exec chmod u+rwx {} \;; \
+	    fi; \
+	    cp -fpR $$d/$$file "$(distdir)$$dir" || exit 1; \
+	  else \
+	    test -f "$(distdir)/$$file" \
+	    || cp -p $$d/$$file "$(distdir)/$$file" \
+	    || exit 1; \
+	  fi; \
+	done
+	@list='$(DIST_SUBDIRS)'; for subdir in $$list; do \
+	  if test "$$subdir" = .; then :; else \
+	    $(am__make_dryrun) \
+	      || test -d "$(distdir)/$$subdir" \
+	      || $(MKDIR_P) "$(distdir)/$$subdir" \
+	      || exit 1; \
+	    dir1=$$subdir; dir2="$(distdir)/$$subdir"; \
+	    $(am__relativize); \
+	    new_distdir=$$reldir; \
+	    dir1=$$subdir; dir2="$(top_distdir)"; \
+	    $(am__relativize); \
+	    new_top_distdir=$$reldir; \
+	    echo " (cd $$subdir && $(MAKE) $(AM_MAKEFLAGS) top_distdir="$$new_top_distdir" distdir="$$new_distdir" \\"; \
+	    echo "     am__remove_distdir=: am__skip_length_check=: am__skip_mode_fix=: distdir)"; \
+	    ($(am__cd) $$subdir && \
+	      $(MAKE) $(AM_MAKEFLAGS) \
+	        top_distdir="$$new_top_distdir" \
+	        distdir="$$new_distdir" \
+		am__remove_distdir=: \
+		am__skip_length_check=: \
+		am__skip_mode_fix=: \
+	        distdir) \
+	      || exit 1; \
+	  fi; \
+	done
+check-am: all-am
+check: check-recursive
+all-am: Makefile $(DATA)
+installdirs: installdirs-recursive
+installdirs-am:
+	for dir in "$(DESTDIR)$(defaultdir)" "$(DESTDIR)$(nonpamdir)" "$(DESTDIR)$(sysconfdir)"; do \
+	  test -z "$$dir" || $(MKDIR_P) "$$dir"; \
+	done
+install: install-recursive
+install-exec: install-exec-recursive
+install-data: install-data-recursive
+uninstall: uninstall-recursive
+
+install-am: all-am
+	@$(MAKE) $(AM_MAKEFLAGS) install-exec-am install-data-am
+
+installcheck: installcheck-recursive
+install-strip:
+	if test -z '$(STRIP)'; then \
+	  $(MAKE) $(AM_MAKEFLAGS) INSTALL_PROGRAM="$(INSTALL_STRIP_PROGRAM)" \
+	    install_sh_PROGRAM="$(INSTALL_STRIP_PROGRAM)" INSTALL_STRIP_FLAG=-s \
+	      install; \
+	else \
+	  $(MAKE) $(AM_MAKEFLAGS) INSTALL_PROGRAM="$(INSTALL_STRIP_PROGRAM)" \
+	    install_sh_PROGRAM="$(INSTALL_STRIP_PROGRAM)" INSTALL_STRIP_FLAG=-s \
+	    "INSTALL_PROGRAM_ENV=STRIPPROG='$(STRIP)'" install; \
+	fi
+mostlyclean-generic:
+
+clean-generic:
+
+distclean-generic:
+	-test -z "$(CONFIG_CLEAN_FILES)" || rm -f $(CONFIG_CLEAN_FILES)
+	-test . = "$(srcdir)" || test -z "$(CONFIG_CLEAN_VPATH_FILES)" || rm -f $(CONFIG_CLEAN_VPATH_FILES)
+
+maintainer-clean-generic:
+	@echo "This command is intended for maintainers to use"
+	@echo "it deletes files that may require special tools to rebuild."
+clean: clean-recursive
+
+clean-am: clean-generic clean-libtool mostlyclean-am
+
+distclean: distclean-recursive
+	-rm -f Makefile
+distclean-am: clean-am distclean-generic distclean-tags
+
+dvi: dvi-recursive
+
+dvi-am:
+
+html: html-recursive
+
+html-am:
+
+info: info-recursive
+
+info-am:
+
+install-data-am: install-defaultDATA install-nonpamDATA
+
+install-dvi: install-dvi-recursive
+
+install-dvi-am:
+
+install-exec-am: install-sysconfDATA
+
+install-html: install-html-recursive
+
+install-html-am:
+
+install-info: install-info-recursive
+
+install-info-am:
+
+install-man:
+
+install-pdf: install-pdf-recursive
+
+install-pdf-am:
+
+install-ps: install-ps-recursive
+
+install-ps-am:
+
+installcheck-am:
+
+maintainer-clean: maintainer-clean-recursive
+	-rm -f Makefile
+maintainer-clean-am: distclean-am maintainer-clean-generic
+
+mostlyclean: mostlyclean-recursive
+
+mostlyclean-am: mostlyclean-generic mostlyclean-libtool
+
+pdf: pdf-recursive
+
+pdf-am:
+
+ps: ps-recursive
+
+ps-am:
+
+uninstall-am: uninstall-defaultDATA uninstall-nonpamDATA \
+	uninstall-sysconfDATA
+
+.MAKE: $(am__recursive_targets) install-am install-strip
+
+.PHONY: $(am__recursive_targets) CTAGS GTAGS TAGS all all-am check \
+	check-am clean clean-generic clean-libtool cscopelist-am ctags \
+	ctags-am distclean distclean-generic distclean-libtool \
+	distclean-tags distdir dvi dvi-am html html-am info info-am \
+	install install-am install-data install-data-am \
+	install-defaultDATA install-dvi install-dvi-am install-exec \
+	install-exec-am install-html install-html-am install-info \
+	install-info-am install-man install-nonpamDATA install-pdf \
+	install-pdf-am install-ps install-ps-am install-strip \
+	install-sysconfDATA installcheck installcheck-am installdirs \
+	installdirs-am maintainer-clean maintainer-clean-generic \
+	mostlyclean mostlyclean-generic mostlyclean-libtool pdf pdf-am \
+	ps ps-am tags tags-am uninstall uninstall-am \
+	uninstall-defaultDATA uninstall-nonpamDATA \
+	uninstall-sysconfDATA
+
+.PRECIOUS: Makefile
+
+
+# Tell versions [3.59,3.63) of GNU make to not export all variables.
+# Otherwise a system limit (for SysV at least) may be exceeded.
+.NOEXPORT:

etc/login.access

@@ -1,20 +1,20 @@
 # $Id$
 #
 # Login access control table.
-# 
+#
 # When someone logs in, the table is scanned for the first entry that
 # matches the (user, host) combination, or, in case of non-networked
 # logins, the first entry that matches the (user, tty) combination.  The
-# permissions field of that table entry determines whether the login will 
+# permissions field of that table entry determines whether the login will
 # be accepted or refused.
-# 
+#
 # Format of the login access control table is three fields separated by a
 # ":" character:
-# 
+#
 # 	permission : users : origins
-# 
+#
 # The first field should be a "+" (access granted) or "-" (access denied)
-# character. 
+# character.
 #
 # The second field should be a list of one or more login names, group
 # names, or ALL (always matches). A pattern of the form user@host is
@@ -37,7 +37,7 @@
 # listed: the program does not look at a user's primary group id value.
 #
 ##############################################################################
-# 
+#
 # Disallow console logins to all but a few accounts.
 #
 #-:ALL EXCEPT wheel shutdown sync:console

etc/login.defs

@@ -6,16 +6,18 @@
 
 #
 # Delay in seconds before being allowed another attempt after a login failure
+# Note: When PAM is used, some modules may enforce a minimum delay (e.g.
+#       pam_unix(8) enforces a 2s delay)
 #
 FAIL_DELAY		3
 
 #
-# Enable logging and display of /var/log/faillog login failure info.
+# Enable logging and display of /var/log/faillog login(1) failure info.
 #
 FAILLOG_ENAB		yes
 
 #
-# Enable display of unknown usernames when login failures are recorded.
+# Enable display of unknown usernames when login(1) failures are recorded.
 #
 LOG_UNKFAIL_ENAB	no
 
@@ -25,10 +27,19 @@ LOG_UNKFAIL_ENAB	no
 LOG_OK_LOGINS		no
 
 #
-# Enable logging and display of /var/log/lastlog login time info.
+# Enable logging and display of /var/log/lastlog login(1) time info.
 #
 LASTLOG_ENAB		yes
 
+#
+# Limit the highest user ID number for which the lastlog entries should
+# be updated.
+#
+# No LASTLOG_UID_MAX means that there is no user ID limit for writing
+# lastlog entries.
+#
+#LASTLOG_UID_MAX
+
 #
 # Enable checking and display of mailbox status upon login.
 #
@@ -48,13 +59,13 @@ OBSCURE_CHECKS_ENAB	yes
 PORTTIME_CHECKS_ENAB	yes
 
 #
-# Enable setting of ulimit, umask, and niceness from passwd gecos field.
+# Enable setting of ulimit, umask, and niceness from passwd(5) gecos field.
 #
 QUOTAS_ENAB		yes
 
 #
-# Enable "syslog" logging of su activity - in addition to sulog file logging.
-# SYSLOG_SG_ENAB does the same for newgrp and sg.
+# Enable "syslog" logging of su(1) activity - in addition to sulog file logging.
+# SYSLOG_SG_ENAB does the same for newgrp(1) and sg(1).
 #
 SYSLOG_SU_ENAB		yes
 SYSLOG_SG_ENAB		yes
@@ -62,13 +73,13 @@ SYSLOG_SG_ENAB		yes
 #
 # If defined, either full pathname of a file containing device names or
 # a ":" delimited list of device names.  Root logins will be allowed only
-# upon these devices.
+# from these devices.
 #
 CONSOLE		/etc/securetty
 #CONSOLE	console:tty01:tty02:tty03:tty04
 
 #
-# If defined, all su activity is logged to this file.
+# If defined, all su(1) activity is logged to this file.
 #
 #SULOG_FILE	/var/log/sulog
 
@@ -80,33 +91,33 @@ MOTD_FILE	/etc/motd
 #MOTD_FILE	/etc/motd:/usr/lib/news/news-motd
 
 #
-# If defined, this file will be output before each login prompt.
+# If defined, this file will be output before each login(1) prompt.
 #
 #ISSUE_FILE	/etc/issue
 
 #
 # If defined, file which maps tty line to TERM environment parameter.
-# Each line of the file is in a format something like "vt100  tty01".
+# Each line of the file is in a format similar to "vt100  tty01".
 #
 #TTYTYPE_FILE	/etc/ttytype
 
 #
-# If defined, login failures will be logged here in a utmp format.
-# last, when invoked as lastb, will read /var/log/btmp, so...
+# If defined, login(1) failures will be logged here in a utmp format.
+# last(1), when invoked as lastb(1), will read /var/log/btmp, so...
 #
 FTMP_FILE	/var/log/btmp
 
 #
-# If defined, name of file whose presence which will inhibit non-root
-# logins.  The contents of this file should be a message indicating
+# If defined, name of file whose presence will inhibit non-root
+# logins.  The content of this file should be a message indicating
 # why logins are inhibited.
 #
 NOLOGINS_FILE	/etc/nologin
 
 #
 # If defined, the command name to display when running "su -".  For
-# example, if this is defined as "su" then a "ps" will display the
-# command is "-su".  If not defined, then "ps" would display the
+# example, if this is defined as "su" then ps(1) will display the
+# command as "-su".  If not defined, then ps(1) will display the
 # name of the shell actually being run, e.g. something like "-sh".
 #
 SU_NAME		su
@@ -156,10 +167,10 @@ ENV_PATH	PATH=/bin:/usr/bin
 #	TTYGROUP	Login tty will be assigned this group ownership.
 #	TTYPERM		Login tty will be set to this permission.
 #
-# If you have a "write" program which is "setgid" to a special group
-# which owns the terminals, define TTYGROUP to the group number and
-# TTYPERM to 0620.  Otherwise leave TTYGROUP commented out and assign
-# TTYPERM to either 622 or 600.
+# If you have a write(1) program which is "setgid" to a special group
+# which owns the terminals, define TTYGROUP as the number of such group
+# and TTYPERM as 0620.  Otherwise leave TTYGROUP commented out and
+# set TTYPERM to either 622 or 600.
 #
 TTYGROUP	tty
 TTYPERM		0600
@@ -169,7 +180,6 @@ TTYPERM		0600
 #
 #	ERASECHAR	Terminal ERASE character ('\010' = backspace).
 #	KILLCHAR	Terminal KILL character ('\025' = CTRL/U).
-#	UMASK		Default "umask" value.
 #	ULIMIT		Default "ulimit" value.
 #
 # The ERASECHAR and KILLCHAR are used only on System V machines.
@@ -180,9 +190,22 @@ TTYPERM		0600
 #
 ERASECHAR	0177
 KILLCHAR	025
-UMASK		022
 #ULIMIT		2097152
 
+# Default initial "umask" value used by login(1) on non-PAM enabled systems.
+# Default "umask" value for pam_umask(8) on PAM enabled systems.
+# UMASK is also used by useradd(8) and newusers(8) to set the mode for new
+# home directories if HOME_MODE is not set.
+# 022 is the default value, but 027, or even 077, could be considered
+# for increased privacy. There is no One True Answer here: each sysadmin
+# must make up their mind.
+UMASK		022
+
+# HOME_MODE is used by useradd(8) and newusers(8) to set the mode for new
+# home directories.
+# If HOME_MODE is not set, the value of UMASK is used to create the mode.
+#HOME_MODE	0700
+
 #
 # Password aging controls:
 #
@@ -205,35 +228,43 @@ PASS_WARN_AGE	7
 SU_WHEEL_ONLY	no
 
 #
-# If compiled with cracklib support, where are the dictionaries
+# If compiled with cracklib support, sets the path to the dictionaries
 #
 CRACKLIB_DICTPATH	/var/cache/cracklib/cracklib_dict
 
 #
-# Min/max values for automatic uid selection in useradd
+# Min/max values for automatic uid selection in useradd(8)
 #
 UID_MIN			 1000
 UID_MAX			60000
 # System accounts
-SYS_UID_MIN		  100
+SYS_UID_MIN		  101
 SYS_UID_MAX		  999
+# Extra per user uids
+SUB_UID_MIN		   100000
+SUB_UID_MAX		600100000
+SUB_UID_COUNT		    65536
 
 #
-# Min/max values for automatic gid selection in groupadd
+# Min/max values for automatic gid selection in groupadd(8)
 #
 GID_MIN			 1000
 GID_MAX			60000
 # System accounts
-SYS_GID_MIN		  100
+SYS_GID_MIN		  101
 SYS_GID_MAX		  999
+# Extra per user group ids
+SUB_GID_MIN		   100000
+SUB_GID_MAX		600100000
+SUB_GID_COUNT		    65536
 
 #
-# Max number of login retries if password is bad
+# Max number of login(1) retries if password is bad
 #
 LOGIN_RETRIES		5
 
 #
-# Max time in seconds for login
+# Max time in seconds for login(1)
 #
 LOGIN_TIMEOUT		60
 
@@ -255,16 +286,16 @@ PASS_ALWAYS_WARN	yes
 #PASS_MAX_LEN		8
 
 #
-# Require password before chfn/chsh can make any changes.
+# Require password before chfn(1)/chsh(1) can make any changes.
 #
 CHFN_AUTH		yes
 
 #
-# Which fields may be changed by regular users using chfn - use
+# Which fields may be changed by regular users using chfn(1) - use
 # any combination of letters "frwh" (full name, room number, work
 # phone, home phone).  If not defined, no changes are allowed.
 # For backward compatibility, "yes" = "rwh" and "no" = "frwh".
-# 
+#
 CHFN_RESTRICT		rwh
 
 #
@@ -285,16 +316,19 @@ CHFN_RESTRICT		rwh
 # Note: If you use PAM, it is recommended to use a value consistent with
 # the PAM modules configuration.
 #
-# This variable is deprecated. You should use ENCRYPT_METHOD.
+# This variable is deprecated. You should use ENCRYPT_METHOD instead.
 #
 #MD5_CRYPT_ENAB	no
 
 #
 # Only works if compiled with ENCRYPTMETHOD_SELECT defined:
-# If set to MD5 , MD5-based algorithm will be used for encrypting password
+# If set to MD5, MD5-based algorithm will be used for encrypting password
 # If set to SHA256, SHA256-based algorithm will be used for encrypting password
 # If set to SHA512, SHA512-based algorithm will be used for encrypting password
+# If set to BCRYPT, BCRYPT-based algorithm will be used for encrypting password
+# If set to YESCRYPT, YESCRYPT-based algorithm will be used for encrypting password
 # If set to DES, DES-based algorithm will be used for encrypting password (default)
+# MD5 and DES should not be used for new hashes, see crypt(5) for recommendations.
 # Overrides the MD5_CRYPT_ENAB option
 #
 # Note: If you use PAM, it is recommended to use a value consistent with
@@ -306,35 +340,72 @@ CHFN_RESTRICT		rwh
 # Only works if ENCRYPT_METHOD is set to SHA256 or SHA512.
 #
 # Define the number of SHA rounds.
-# With a lot of rounds, it is more difficult to brute forcing the password.
-# But note also that it more CPU resources will be needed to authenticate
-# users.
+# With a lot of rounds, it is more difficult to brute-force the password.
+# However, more CPU resources will be needed to authenticate users if
+# this value is increased.
 #
-# If not specified, the libc will choose the default number of rounds (5000).
-# The values must be inside the 1000-999999999 range.
+# If not specified, the libc will choose the default number of rounds (5000),
+# which is orders of magnitude too low for modern hardware.
+# The values must be within the 1000-999999999 range.
 # If only one of the MIN or MAX values is set, then this value will be used.
 # If MIN > MAX, the highest value will be used.
 #
-# SHA_CRYPT_MIN_ROUNDS 5000
-# SHA_CRYPT_MAX_ROUNDS 5000
+#SHA_CRYPT_MIN_ROUNDS 5000
+#SHA_CRYPT_MAX_ROUNDS 5000
+
+#
+# Only works if ENCRYPT_METHOD is set to BCRYPT.
+#
+# Define the number of BCRYPT rounds.
+# With a lot of rounds, it is more difficult to brute-force the password.
+# However, more CPU resources will be needed to authenticate users if
+# this value is increased.
+#
+# If not specified, 13 rounds will be attempted.
+# If only one of the MIN or MAX values is set, then this value will be used.
+# If MIN > MAX, the highest value will be used.
+#
+#BCRYPT_MIN_ROUNDS 13
+#BCRYPT_MAX_ROUNDS 13
+
+#
+# Only works if ENCRYPT_METHOD is set to YESCRYPT.
+#
+# Define the YESCRYPT cost factor.
+# With a higher cost factor, it is more difficult to brute-force the password.
+# However, more CPU time and more memory will be needed to authenticate users
+# if this value is increased.
+#
+# If not specified, a cost factor of 5 will be used.
+# The value must be within the 1-11 range.
+#
+#YESCRYPT_COST_FACTOR 5
 
 #
 # List of groups to add to the user's supplementary group set
-# when logging in on the console (as determined by the CONSOLE
+# when logging in from the console (as determined by the CONSOLE
 # setting).  Default is none.
 #
 # Use with caution - it is possible for users to gain permanent
-# access to these groups, even when not logged in on the console.
+# access to these groups, even when not logged in from the console.
 # How to do it is left as an exercise for the reader...
 #
 #CONSOLE_GROUPS		floppy:audio:cdrom
 
 #
 # Should login be allowed if we can't cd to the home directory?
-# Default in no.
+# Default is no.
 #
 DEFAULT_HOME	yes
 
+#
+# The pwck(8) utility emits a warning for any system account with a home
+# directory that does not exist.  Some system accounts intentionally do
+# not have a home directory.  Such accounts may have this string as
+# their home directory in /etc/passwd to avoid a spurious warning.
+#
+NONEXISTENT	/nonexistent
+
 #
 # If this file exists and is readable, login environment will be
 # read from it.  Every line should be in the form name=value.
@@ -353,17 +424,55 @@ ENVIRON_FILE	/etc/environment
 # (examples: 022 -> 002, 077 -> 007) for non-root users, if the uid is
 # the same as gid, and username is the same as the primary group name.
 #
-# This also enables userdel to remove user groups if no members exist.
+# This also enables userdel(8) to remove user groups if no members exist.
 #
 USERGROUPS_ENAB yes
 
 #
-# If set to a non-nul number, the shadow utilities will make sure that
+# If set to a non-zero number, the shadow utilities will make sure that
 # groups never have more than this number of users on one line.
-# This permit to support split groups (groups split into multiple lines,
+# This permits to support split groups (groups split into multiple lines,
 # with the same group ID, to avoid limitation of the line length in the
 # group file).
 #
 # 0 is the default value and disables this feature.
 #
 #MAX_MEMBERS_PER_GROUP	0
+
+#
+# If useradd(8) should create home directories for users by default (non
+# system users only).
+# This option is overridden with the -M or -m flags on the useradd(8)
+# command-line.
+#
+#CREATE_HOME     yes
+
+#
+# Force use shadow, even if shadow passwd & shadow group files are
+# missing.
+#
+#FORCE_SHADOW    yes
+
+#
+# Allow newuidmap and newgidmap when running under an alternative
+# primary group.
+#
+#GRANT_AUX_GROUP_SUBIDS yes
+
+#
+# Prevents an empty password field to be interpreted as "no authentication
+# required".
+# Set to "yes" to prevent for all accounts
+# Set to "superuser" to prevent for UID 0 / root (default)
+# Set to "no" to not prevent for any account (dangerous, historical default)
+PREVENT_NO_AUTH superuser
+
+#
+# Select the HMAC cryptography algorithm.
+# Used in pam_timestamp module to calculate the keyed-hash message
+# authentication code.
+#
+# Note: It is recommended to check hmac(3) to see the possible algorithms
+# that are available in your system.
+#
+#HMAC_CRYPTO_ALGO SHA512

etc/pam.d/Makefile.am

@@ -2,19 +2,20 @@
 # and also cooperate to make a distribution for `make dist'
 
 pamd_files = \
-	chage \
 	chfn \
+	chsh \
+	groupmems \
+	login \
+	passwd
+
+pamd_acct_tools_files = \
+	chage \
 	chgpasswd \
 	chpasswd \
-	chsh \
 	groupadd \
 	groupdel \
-	groupmems \
 	groupmod \
-	login \
 	newusers \
-	passwd \
-	su \
 	useradd \
 	userdel \
 	usermod
@@ -22,6 +23,13 @@ pamd_files = \
 if USE_PAM
 pamddir = $(sysconfdir)/pam.d
 pamd_DATA = $(pamd_files)
+if ACCT_TOOLS_SETUID
+pamd_DATA += $(pamd_acct_tools_files)
+endif
 endif
 
-EXTRA_DIST = $(pamd_files)
+if WITH_SU
+pamd_files += su
+endif
+
+EXTRA_DIST = $(pamd_files) $(pamd_acct_tools_files)

etc/pam.d/Makefile.in

@@ -0,0 +1,564 @@
+# Makefile.in generated by automake 1.16.5 from Makefile.am.
+# @configure_input@
+
+# Copyright (C) 1994-2021 Free Software Foundation, Inc.
+
+# This Makefile.in is free software; the Free Software Foundation
+# gives unlimited permission to copy and/or distribute it,
+# with or without modifications, as long as this notice is preserved.
+
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY, to the extent permitted by law; without
+# even the implied warranty of MERCHANTABILITY or FITNESS FOR A
+# PARTICULAR PURPOSE.
+
+@SET_MAKE@
+
+# This is a dummy Makefile.am to get automake work flawlessly,
+# and also cooperate to make a distribution for `make dist'
+
+VPATH = @srcdir@
+am__is_gnu_make = { \
+  if test -z '$(MAKELEVEL)'; then \
+    false; \
+  elif test -n '$(MAKE_HOST)'; then \
+    true; \
+  elif test -n '$(MAKE_VERSION)' && test -n '$(CURDIR)'; then \
+    true; \
+  else \
+    false; \
+  fi; \
+}
+am__make_running_with_option = \
+  case $${target_option-} in \
+      ?) ;; \
+      *) echo "am__make_running_with_option: internal error: invalid" \
+              "target option '$${target_option-}' specified" >&2; \
+         exit 1;; \
+  esac; \
+  has_opt=no; \
+  sane_makeflags=$$MAKEFLAGS; \
+  if $(am__is_gnu_make); then \
+    sane_makeflags=$$MFLAGS; \
+  else \
+    case $$MAKEFLAGS in \
+      *\\[\ \	]*) \
+        bs=\\; \
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+	chage \
+	chgpasswd \
+	chpasswd \
+	groupadd \
+	groupdel \
+	groupmod \
+	newusers \
+	useradd \
+	userdel \
+	usermod
+
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+
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+	      exit 1;; \
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+	$(am__cd) $(top_srcdir) && \
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+	  *config.status*) \
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+	cd $(top_builddir) && $(MAKE) $(AM_MAKEFLAGS) am--refresh
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+	@$(NORMAL_INSTALL)
+	@list='$(pamd_DATA)'; test -n "$(pamddir)" || list=; \
+	if test -n "$$list"; then \
+	  echo " $(MKDIR_P) '$(DESTDIR)$(pamddir)'"; \
+	  $(MKDIR_P) "$(DESTDIR)$(pamddir)" || exit 1; \
+	fi; \
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+	done
+
+uninstall-pamdDATA:
+	@$(NORMAL_UNINSTALL)
+	@list='$(pamd_DATA)'; test -n "$(pamddir)" || list=; \
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+	case $$dist_files in \
+	  */*) $(MKDIR_P) `echo "$$dist_files" | \
+			   sed '/\//!d;s|^|$(distdir)/|;s,/[^/]*$$,,' | \
+			   sort -u` ;; \
+	esac; \
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+	    cp -fpR $$d/$$file "$(distdir)$$dir" || exit 1; \
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+	    test -f "$(distdir)/$$file" \
+	    || cp -p $$d/$$file "$(distdir)/$$file" \
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+	      install; \
+	else \
+	  $(MAKE) $(AM_MAKEFLAGS) INSTALL_PROGRAM="$(INSTALL_STRIP_PROGRAM)" \
+	    install_sh_PROGRAM="$(INSTALL_STRIP_PROGRAM)" INSTALL_STRIP_FLAG=-s \
+	    "INSTALL_PROGRAM_ENV=STRIPPROG='$(STRIP)'" install; \
+	fi
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+distclean-generic:
+	-test -z "$(CONFIG_CLEAN_FILES)" || rm -f $(CONFIG_CLEAN_FILES)
+	-test . = "$(srcdir)" || test -z "$(CONFIG_CLEAN_VPATH_FILES)" || rm -f $(CONFIG_CLEAN_VPATH_FILES)
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+	@echo "This command is intended for maintainers to use"
+	@echo "it deletes files that may require special tools to rebuild."
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+	cscopelist-am ctags-am distclean distclean-generic \
+	distclean-libtool distdir dvi dvi-am html html-am info info-am \
+	install install-am install-data install-data-am install-dvi \
+	install-dvi-am install-exec install-exec-am install-html \
+	install-html-am install-info install-info-am install-man \
+	install-pamdDATA install-pdf install-pdf-am install-ps \
+	install-ps-am install-strip installcheck installcheck-am \
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+	mostlyclean mostlyclean-generic mostlyclean-libtool pdf pdf-am \
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+
+
+# Tell versions [3.59,3.63) of GNU make to not export all variables.
+# Otherwise a system limit (for SysV at least) may be exceeded.
+.NOEXPORT:

etc/pam.d/login

@@ -4,8 +4,8 @@ auth		include		system-auth
 account		required	pam_nologin.so
 account		include		system-auth
 password	include		system-auth
-session		required	pam_selinux.so close
+session [success=ok ignore=ignore module_unknown=ignore default=bad] pam_selinux.so close
 session		include		system-auth
 session		required	pam_loginuid.so
 session		optional	pam_console.so
-session		required	pam_selinux.so open
+session [success=ok ignore=ignore module_unknown=ignore default=bad] pam_selinux.so open

etc/pam.d/su

@@ -7,7 +7,7 @@ auth		required	pam_wheel.so use_uid
 auth		include		system-auth
 account		include		system-auth
 password	include		system-auth
-session		required	pam_selinux.so close
+session [success=ok ignore=ignore module_unknown=ignore default=bad] pam_selinux.so close
 session		include		system-auth
-session		required	pam_selinux.so open multiple
+session [success=ok ignore=ignore module_unknown=ignore default=bad] pam_selinux.so open
 session		optional	pam_xauth.so

etc/useradd

@@ -1,8 +0,0 @@
-# useradd defaults file
-GROUP=1000
-HOME=/home
-INACTIVE=-1
-EXPIRE=
-SHELL=/bin/bash
-SKEL=/etc/skel
-CREATE_MAIL_SPOOL=yes

install-sh

@@ -0,0 +1,541 @@
+#!/bin/sh
+# install - install a program, script, or datafile
+
+scriptversion=2020-11-14.01; # UTC
+
+# This originates from X11R5 (mit/util/scripts/install.sh), which was
+# later released in X11R6 (xc/config/util/install.sh) with the
+# following copyright and license.
+#
+# Copyright (C) 1994 X Consortium
+#
+# Permission is hereby granted, free of charge, to any person obtaining a copy
+# of this software and associated documentation files (the "Software"), to
+# deal in the Software without restriction, including without limitation the
+# rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
+# sell copies of the Software, and to permit persons to whom the Software is
+# furnished to do so, subject to the following conditions:
+#
+# The above copyright notice and this permission notice shall be included in
+# all copies or substantial portions of the Software.
+#
+# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL THE
+# X CONSORTIUM BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
+# AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNEC-
+# TION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+#
+# Except as contained in this notice, the name of the X Consortium shall not
+# be used in advertising or otherwise to promote the sale, use or other deal-
+# ings in this Software without prior written authorization from the X Consor-
+# tium.
+#
+#
+# FSF changes to this file are in the public domain.
+#
+# Calling this script install-sh is preferred over install.sh, to prevent
+# 'make' implicit rules from creating a file called install from it
+# when there is no Makefile.
+#
+# This script is compatible with the BSD install script, but was written
+# from scratch.
+
+tab='	'
+nl='
+'
+IFS=" $tab$nl"
+
+# Set DOITPROG to "echo" to test this script.
+
+doit=${DOITPROG-}
+doit_exec=${doit:-exec}
+
+# Put in absolute file names if you don't have them in your path;
+# or use environment vars.
+
+chgrpprog=${CHGRPPROG-chgrp}
+chmodprog=${CHMODPROG-chmod}
+chownprog=${CHOWNPROG-chown}
+cmpprog=${CMPPROG-cmp}
+cpprog=${CPPROG-cp}
+mkdirprog=${MKDIRPROG-mkdir}
+mvprog=${MVPROG-mv}
+rmprog=${RMPROG-rm}
+stripprog=${STRIPPROG-strip}
+
+posix_mkdir=
+
+# Desired mode of installed file.
+mode=0755
+
+# Create dirs (including intermediate dirs) using mode 755.
+# This is like GNU 'install' as of coreutils 8.32 (2020).
+mkdir_umask=22
+
+backupsuffix=
+chgrpcmd=
+chmodcmd=$chmodprog
+chowncmd=
+mvcmd=$mvprog
+rmcmd="$rmprog -f"
+stripcmd=
+
+src=
+dst=
+dir_arg=
+dst_arg=
+
+copy_on_change=false
+is_target_a_directory=possibly
+
+usage="\
+Usage: $0 [OPTION]... [-T] SRCFILE DSTFILE
+   or: $0 [OPTION]... SRCFILES... DIRECTORY
+   or: $0 [OPTION]... -t DIRECTORY SRCFILES...
+   or: $0 [OPTION]... -d DIRECTORIES...
+
+In the 1st form, copy SRCFILE to DSTFILE.
+In the 2nd and 3rd, copy all SRCFILES to DIRECTORY.
+In the 4th, create DIRECTORIES.
+
+Options:
+     --help     display this help and exit.
+     --version  display version info and exit.
+
+  -c            (ignored)
+  -C            install only if different (preserve data modification time)
+  -d            create directories instead of installing files.
+  -g GROUP      $chgrpprog installed files to GROUP.
+  -m MODE       $chmodprog installed files to MODE.
+  -o USER       $chownprog installed files to USER.
+  -p            pass -p to $cpprog.
+  -s            $stripprog installed files.
+  -S SUFFIX     attempt to back up existing files, with suffix SUFFIX.
+  -t DIRECTORY  install into DIRECTORY.
+  -T            report an error if DSTFILE is a directory.
+
+Environment variables override the default commands:
+  CHGRPPROG CHMODPROG CHOWNPROG CMPPROG CPPROG MKDIRPROG MVPROG
+  RMPROG STRIPPROG
+
+By default, rm is invoked with -f; when overridden with RMPROG,
+it's up to you to specify -f if you want it.
+
+If -S is not specified, no backups are attempted.
+
+Email bug reports to bug-automake@gnu.org.
+Automake home page: https://www.gnu.org/software/automake/
+"
+
+while test $# -ne 0; do
+  case $1 in
+    -c) ;;
+
+    -C) copy_on_change=true;;
+
+    -d) dir_arg=true;;
+
+    -g) chgrpcmd="$chgrpprog $2"
+        shift;;
+
+    --help) echo "$usage"; exit $?;;
+
+    -m) mode=$2
+        case $mode in
+          *' '* | *"$tab"* | *"$nl"* | *'*'* | *'?'* | *'['*)
+            echo "$0: invalid mode: $mode" >&2
+            exit 1;;
+        esac
+        shift;;
+
+    -o) chowncmd="$chownprog $2"
+        shift;;
+
+    -p) cpprog="$cpprog -p";;
+
+    -s) stripcmd=$stripprog;;
+
+    -S) backupsuffix="$2"
+        shift;;
+
+    -t)
+        is_target_a_directory=always
+        dst_arg=$2
+        # Protect names problematic for 'test' and other utilities.
+        case $dst_arg in
+          -* | [=\(\)!]) dst_arg=./$dst_arg;;
+        esac
+        shift;;
+
+    -T) is_target_a_directory=never;;
+
+    --version) echo "$0 $scriptversion"; exit $?;;
+
+    --) shift
+        break;;
+
+    -*) echo "$0: invalid option: $1" >&2
+        exit 1;;
+
+    *)  break;;
+  esac
+  shift
+done
+
+# We allow the use of options -d and -T together, by making -d
+# take the precedence; this is for compatibility with GNU install.
+
+if test -n "$dir_arg"; then
+  if test -n "$dst_arg"; then
+    echo "$0: target directory not allowed when installing a directory." >&2
+    exit 1
+  fi
+fi
+
+if test $# -ne 0 && test -z "$dir_arg$dst_arg"; then
+  # When -d is used, all remaining arguments are directories to create.
+  # When -t is used, the destination is already specified.
+  # Otherwise, the last argument is the destination.  Remove it from $@.
+  for arg
+  do
+    if test -n "$dst_arg"; then
+      # $@ is not empty: it contains at least $arg.
+      set fnord "$@" "$dst_arg"
+      shift # fnord
+    fi
+    shift # arg
+    dst_arg=$arg
+    # Protect names problematic for 'test' and other utilities.
+    case $dst_arg in
+      -* | [=\(\)!]) dst_arg=./$dst_arg;;
+    esac
+  done
+fi
+
+if test $# -eq 0; then
+  if test -z "$dir_arg"; then
+    echo "$0: no input file specified." >&2
+    exit 1
+  fi
+  # It's OK to call 'install-sh -d' without argument.
+  # This can happen when creating conditional directories.
+  exit 0
+fi
+
+if test -z "$dir_arg"; then
+  if test $# -gt 1 || test "$is_target_a_directory" = always; then
+    if test ! -d "$dst_arg"; then
+      echo "$0: $dst_arg: Is not a directory." >&2
+      exit 1
+    fi
+  fi
+fi
+
+if test -z "$dir_arg"; then
+  do_exit='(exit $ret); exit $ret'
+  trap "ret=129; $do_exit" 1
+  trap "ret=130; $do_exit" 2
+  trap "ret=141; $do_exit" 13
+  trap "ret=143; $do_exit" 15
+
+  # Set umask so as not to create temps with too-generous modes.
+  # However, 'strip' requires both read and write access to temps.
+  case $mode in
+    # Optimize common cases.
+    *644) cp_umask=133;;
+    *755) cp_umask=22;;
+
+    *[0-7])
+      if test -z "$stripcmd"; then
+        u_plus_rw=
+      else
+        u_plus_rw='% 200'
+      fi
+      cp_umask=`expr '(' 777 - $mode % 1000 ')' $u_plus_rw`;;
+    *)
+      if test -z "$stripcmd"; then
+        u_plus_rw=
+      else
+        u_plus_rw=,u+rw
+      fi
+      cp_umask=$mode$u_plus_rw;;
+  esac
+fi
+
+for src
+do
+  # Protect names problematic for 'test' and other utilities.
+  case $src in
+    -* | [=\(\)!]) src=./$src;;
+  esac
+
+  if test -n "$dir_arg"; then
+    dst=$src
+    dstdir=$dst
+    test -d "$dstdir"
+    dstdir_status=$?
+    # Don't chown directories that already exist.
+    if test $dstdir_status = 0; then
+      chowncmd=""
+    fi
+  else
+
+    # Waiting for this to be detected by the "$cpprog $src $dsttmp" command
+    # might cause directories to be created, which would be especially bad
+    # if $src (and thus $dsttmp) contains '*'.
+    if test ! -f "$src" && test ! -d "$src"; then
+      echo "$0: $src does not exist." >&2
+      exit 1
+    fi
+
+    if test -z "$dst_arg"; then
+      echo "$0: no destination specified." >&2
+      exit 1
+    fi
+    dst=$dst_arg
+
+    # If destination is a directory, append the input filename.
+    if test -d "$dst"; then
+      if test "$is_target_a_directory" = never; then
+        echo "$0: $dst_arg: Is a directory" >&2
+        exit 1
+      fi
+      dstdir=$dst
+      dstbase=`basename "$src"`
+      case $dst in
+	*/) dst=$dst$dstbase;;
+	*)  dst=$dst/$dstbase;;
+      esac
+      dstdir_status=0
+    else
+      dstdir=`dirname "$dst"`
+      test -d "$dstdir"
+      dstdir_status=$?
+    fi
+  fi
+
+  case $dstdir in
+    */) dstdirslash=$dstdir;;
+    *)  dstdirslash=$dstdir/;;
+  esac
+
+  obsolete_mkdir_used=false
+
+  if test $dstdir_status != 0; then
+    case $posix_mkdir in
+      '')
+        # With -d, create the new directory with the user-specified mode.
+        # Otherwise, rely on $mkdir_umask.
+        if test -n "$dir_arg"; then
+          mkdir_mode=-m$mode
+        else
+          mkdir_mode=
+        fi
+
+        posix_mkdir=false
+	# The $RANDOM variable is not portable (e.g., dash).  Use it
+	# here however when possible just to lower collision chance.
+	tmpdir=${TMPDIR-/tmp}/ins$RANDOM-$$
+
+	trap '
+	  ret=$?
+	  rmdir "$tmpdir/a/b" "$tmpdir/a" "$tmpdir" 2>/dev/null
+	  exit $ret
+	' 0
+
+	# Because "mkdir -p" follows existing symlinks and we likely work
+	# directly in world-writeable /tmp, make sure that the '$tmpdir'
+	# directory is successfully created first before we actually test
+	# 'mkdir -p'.
+	if (umask $mkdir_umask &&
+	    $mkdirprog $mkdir_mode "$tmpdir" &&
+	    exec $mkdirprog $mkdir_mode -p -- "$tmpdir/a/b") >/dev/null 2>&1
+	then
+	  if test -z "$dir_arg" || {
+	       # Check for POSIX incompatibilities with -m.
+	       # HP-UX 11.23 and IRIX 6.5 mkdir -m -p sets group- or
+	       # other-writable bit of parent directory when it shouldn't.
+	       # FreeBSD 6.1 mkdir -m -p sets mode of existing directory.
+	       test_tmpdir="$tmpdir/a"
+	       ls_ld_tmpdir=`ls -ld "$test_tmpdir"`
+	       case $ls_ld_tmpdir in
+		 d????-?r-*) different_mode=700;;
+		 d????-?--*) different_mode=755;;
+		 *) false;;
+	       esac &&
+	       $mkdirprog -m$different_mode -p -- "$test_tmpdir" && {
+		 ls_ld_tmpdir_1=`ls -ld "$test_tmpdir"`
+		 test "$ls_ld_tmpdir" = "$ls_ld_tmpdir_1"
+	       }
+	     }
+	  then posix_mkdir=:
+	  fi
+	  rmdir "$tmpdir/a/b" "$tmpdir/a" "$tmpdir"
+	else
+	  # Remove any dirs left behind by ancient mkdir implementations.
+	  rmdir ./$mkdir_mode ./-p ./-- "$tmpdir" 2>/dev/null
+	fi
+	trap '' 0;;
+    esac
+
+    if
+      $posix_mkdir && (
+        umask $mkdir_umask &&
+        $doit_exec $mkdirprog $mkdir_mode -p -- "$dstdir"
+      )
+    then :
+    else
+
+      # mkdir does not conform to POSIX,
+      # or it failed possibly due to a race condition.  Create the
+      # directory the slow way, step by step, checking for races as we go.
+
+      case $dstdir in
+        /*) prefix='/';;
+        [-=\(\)!]*) prefix='./';;
+        *)  prefix='';;
+      esac
+
+      oIFS=$IFS
+      IFS=/
+      set -f
+      set fnord $dstdir
+      shift
+      set +f
+      IFS=$oIFS
+
+      prefixes=
+
+      for d
+      do
+        test X"$d" = X && continue
+
+        prefix=$prefix$d
+        if test -d "$prefix"; then
+          prefixes=
+        else
+          if $posix_mkdir; then
+            (umask $mkdir_umask &&
+             $doit_exec $mkdirprog $mkdir_mode -p -- "$dstdir") && break
+            # Don't fail if two instances are running concurrently.
+            test -d "$prefix" || exit 1
+          else
+            case $prefix in
+              *\'*) qprefix=`echo "$prefix" | sed "s/'/'\\\\\\\\''/g"`;;
+              *) qprefix=$prefix;;
+            esac
+            prefixes="$prefixes '$qprefix'"
+          fi
+        fi
+        prefix=$prefix/
+      done
+
+      if test -n "$prefixes"; then
+        # Don't fail if two instances are running concurrently.
+        (umask $mkdir_umask &&
+         eval "\$doit_exec \$mkdirprog $prefixes") ||
+          test -d "$dstdir" || exit 1
+        obsolete_mkdir_used=true
+      fi
+    fi
+  fi
+
+  if test -n "$dir_arg"; then
+    { test -z "$chowncmd" || $doit $chowncmd "$dst"; } &&
+    { test -z "$chgrpcmd" || $doit $chgrpcmd "$dst"; } &&
+    { test "$obsolete_mkdir_used$chowncmd$chgrpcmd" = false ||
+      test -z "$chmodcmd" || $doit $chmodcmd $mode "$dst"; } || exit 1
+  else
+
+    # Make a couple of temp file names in the proper directory.
+    dsttmp=${dstdirslash}_inst.$$_
+    rmtmp=${dstdirslash}_rm.$$_
+
+    # Trap to clean up those temp files at exit.
+    trap 'ret=$?; rm -f "$dsttmp" "$rmtmp" && exit $ret' 0
+
+    # Copy the file name to the temp name.
+    (umask $cp_umask &&
+     { test -z "$stripcmd" || {
+	 # Create $dsttmp read-write so that cp doesn't create it read-only,
+	 # which would cause strip to fail.
+	 if test -z "$doit"; then
+	   : >"$dsttmp" # No need to fork-exec 'touch'.
+	 else
+	   $doit touch "$dsttmp"
+	 fi
+       }
+     } &&
+     $doit_exec $cpprog "$src" "$dsttmp") &&
+
+    # and set any options; do chmod last to preserve setuid bits.
+    #
+    # If any of these fail, we abort the whole thing.  If we want to
+    # ignore errors from any of these, just make sure not to ignore
+    # errors from the above "$doit $cpprog $src $dsttmp" command.
+    #
+    { test -z "$chowncmd" || $doit $chowncmd "$dsttmp"; } &&
+    { test -z "$chgrpcmd" || $doit $chgrpcmd "$dsttmp"; } &&
+    { test -z "$stripcmd" || $doit $stripcmd "$dsttmp"; } &&
+    { test -z "$chmodcmd" || $doit $chmodcmd $mode "$dsttmp"; } &&
+
+    # If -C, don't bother to copy if it wouldn't change the file.
+    if $copy_on_change &&
+       old=`LC_ALL=C ls -dlL "$dst"     2>/dev/null` &&
+       new=`LC_ALL=C ls -dlL "$dsttmp"  2>/dev/null` &&
+       set -f &&
+       set X $old && old=:$2:$4:$5:$6 &&
+       set X $new && new=:$2:$4:$5:$6 &&
+       set +f &&
+       test "$old" = "$new" &&
+       $cmpprog "$dst" "$dsttmp" >/dev/null 2>&1
+    then
+      rm -f "$dsttmp"
+    else
+      # If $backupsuffix is set, and the file being installed
+      # already exists, attempt a backup.  Don't worry if it fails,
+      # e.g., if mv doesn't support -f.
+      if test -n "$backupsuffix" && test -f "$dst"; then
+        $doit $mvcmd -f "$dst" "$dst$backupsuffix" 2>/dev/null
+      fi
+
+      # Rename the file to the real destination.
+      $doit $mvcmd -f "$dsttmp" "$dst" 2>/dev/null ||
+
+      # The rename failed, perhaps because mv can't rename something else
+      # to itself, or perhaps because mv is so ancient that it does not
+      # support -f.
+      {
+        # Now remove or move aside any old file at destination location.
+        # We try this two ways since rm can't unlink itself on some
+        # systems and the destination file might be busy for other
+        # reasons.  In this case, the final cleanup might fail but the new
+        # file should still install successfully.
+        {
+          test ! -f "$dst" ||
+          $doit $rmcmd "$dst" 2>/dev/null ||
+          { $doit $mvcmd -f "$dst" "$rmtmp" 2>/dev/null &&
+            { $doit $rmcmd "$rmtmp" 2>/dev/null; :; }
+          } ||
+          { echo "$0: cannot unlink or rename $dst" >&2
+            (exit 1); exit 1
+          }
+        } &&
+
+        # Now rename the file to the real destination.
+        $doit $mvcmd "$dsttmp" "$dst"
+      }
+    fi || exit 1
+
+    trap '' 0
+  fi
+done
+
+# Local variables:
+# eval: (add-hook 'before-save-hook 'time-stamp)
+# time-stamp-start: "scriptversion="
+# time-stamp-format: "%:y-%02m-%02d.%02H"
+# time-stamp-time-zone: "UTC0"
+# time-stamp-end: "; # UTC"
+# End:

lib/Makefile.am

@@ -1,11 +1,16 @@
 
 AUTOMAKE_OPTIONS = 1.0 foreign
 
-DEFS = 
+DEFS =
 
 noinst_LTLIBRARIES = libshadow.la
 
-libshadow_la_LDFLAGS = -version-info 0:0:0
+libshadow_la_CPPFLAGS = $(ECONF_CPPFLAGS)
+if HAVE_VENDORDIR
+libshadow_la_CPPFLAGS += -DVENDORDIR=\"$(VENDORDIR)\"
+endif
+
+libshadow_la_CPPFLAGS += -I$(top_srcdir)
 
 libshadow_la_SOURCES = \
 	commonio.c \
@@ -14,16 +19,28 @@ libshadow_la_SOURCES = \
 	encrypt.c \
 	exitcodes.h \
 	faillog.h \
+	fields.c \
 	fputsx.c \
 	getdef.c \
 	getdef.h \
+	get_gid.c \
+	getlong.c \
+	get_pid.c \
+	get_uid.c \
+	getulong.c \
 	groupio.c \
 	groupmem.c \
 	groupio.h \
 	gshadow.c \
 	lockpw.c \
+	nss.c \
 	nscd.c \
 	nscd.h \
+	shadowlog.c \
+	shadowlog.h \
+	shadowlog_internal.h \
+	sssd.c \
+	sssd.h \
 	pam_defs.h \
 	port.c \
 	port.h \
@@ -33,16 +50,28 @@ libshadow_la_SOURCES = \
 	pwio.c \
 	pwio.h \
 	pwmem.c \
+	run_part.h \
+	run_part.c \
+	subordinateio.h \
+	subordinateio.c \
+	selinux.c \
+	semanage.c \
 	sgetgrent.c \
 	sgetpwent.c \
+	sgetspent.c \
 	sgroupio.c \
 	sgroupio.h\
 	shadow.c \
 	shadowio.c \
 	shadowio.h \
 	shadowmem.c \
+	spawn.c \
 	utent.c
 
+if WITH_TCB
+libshadow_la_SOURCES += tcbfuncs.c tcbfuncs.h
+endif
+
 # These files are unneeded for some reason, listed in
 # order of appearance:
 #

lib/commonio.h

@@ -1,50 +1,27 @@
 /*
- * Copyright (c) 1990 - 1994, Julianne Frances Haugh
- * Copyright (c) 1996 - 2000, Marek Michałkiewicz
- * Copyright (c) 2001 - 2005, Tomasz Kłoczko
- * Copyright (c) 2007 - 2008, Nicolas François
- * All rights reserved.
+ * SPDX-FileCopyrightText: 1990 - 1994, Julianne Frances Haugh
+ * SPDX-FileCopyrightText: 1996 - 2000, Marek Michałkiewicz
+ * SPDX-FileCopyrightText: 2001 - 2005, Tomasz Kłoczko
+ * SPDX-FileCopyrightText: 2007 - 2010, Nicolas François
  *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- * 1. Redistributions of source code must retain the above copyright
- *    notice, this list of conditions and the following disclaimer.
- * 2. Redistributions in binary form must reproduce the above copyright
- *    notice, this list of conditions and the following disclaimer in the
- *    documentation and/or other materials provided with the distribution.
- * 3. The name of the copyright holders or contributors may not be used to
- *    endorse or promote products derived from this software without
- *    specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
- * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
- * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
- * PARTICULAR PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE COPYRIGHT
- * HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
- * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
- * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
- * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
- * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
- * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
- * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ * SPDX-License-Identifier: BSD-3-Clause
  */
 
 /* $Id$ */
-#ifndef _COMMONIO_H
-#define _COMMONIO_H
+#ifndef COMMONIO_H
+#define COMMONIO_H
+
+#include "defines.h" /* bool */
 
-#ifdef WITH_SELINUX
-#include <selinux/selinux.h>
-#endif
 /*
  * Linked list entry.
  */
 struct commonio_entry {
-	char *line;
-	void *eptr;		/* struct passwd, struct spwd, ... */
-	struct commonio_entry *prev, *next;
-	unsigned int changed:1;
+	/*@null@*/char *line;
+	/*@null@*/void *eptr;		/* struct passwd, struct spwd, ... */
+	/*@dependent@*/ /*@null@*/struct commonio_entry *prev;
+	/*@owned@*/ /*@null@*/struct commonio_entry *next;
+	bool changed:1;
 };
 
 /*
@@ -55,12 +32,12 @@ struct commonio_ops {
 	 * Make a copy of the object (for example, struct passwd)
 	 * and all strings pointed by it, in malloced memory.
 	 */
-	void *(*dup) (const void *);
+	/*@null@*/ /*@only@*/void *(*dup) (const void *);
 
 	/*
 	 * free() the object including any strings pointed by it.
 	 */
-	void (*free) (void *);
+	void (*free) (/*@out@*/ /*@only@*/void *);
 
 	/*
 	 * Return the name of the object (for example, pw_name
@@ -84,7 +61,7 @@ struct commonio_ops {
 	 * fgets and fputs (can be replaced by versions that
 	 * understand line continuation conventions).
 	 */
-	char *(*fgets) (char *, int, FILE *);
+	/*@null@*/char *(*fgets) (/*@returned@*/ /*@out@*/char *s, int n, FILE *stream);
 	int (*fputs) (const char *, FILE *);
 
 	/*
@@ -93,8 +70,8 @@ struct commonio_ops {
 	 * is open or before it is closed.
 	 * They return 0 on failure and 1 on success.
 	 */
-	int (*open_hook) (void);
-	int (*close_hook) (void);
+	/*@null@*/int (*open_hook) (void);
+	/*@null@*/int (*close_hook) (void);
 };
 
 /*
@@ -109,47 +86,59 @@ struct commonio_db {
 	/*
 	 * Operations from above.
 	 */
-	struct commonio_ops *ops;
+	/*@observer@*/const struct commonio_ops *ops;
 
 	/*
 	 * Currently open file stream.
 	 */
-	FILE *fp;
+	/*@dependent@*/ /*@null@*/FILE *fp;
 
 #ifdef WITH_SELINUX
-	security_context_t scontext;
+	/*@null@*/char *scontext;
 #endif
+	/*
+	 * Default permissions and owner for newly created data file.
+         */
+	mode_t st_mode;
+	uid_t st_uid;
+	gid_t st_gid;
 	/*
 	 * Head, tail, current position in linked list.
 	 */
-	struct commonio_entry *head, *tail, *cursor;
+	/*@owned@*/ /*@null@*/struct commonio_entry *head;
+	/*@dependent@*/ /*@null@*/struct commonio_entry *tail;
+	/*@dependent@*/ /*@null@*/struct commonio_entry *cursor;
 
 	/*
 	 * Various flags.
 	 */
-	unsigned int changed:1;
-	unsigned int isopen:1;
-	unsigned int locked:1;
-	unsigned int readonly:1;
+	bool changed:1;
+	bool isopen:1;
+	bool locked:1;
+	bool readonly:1;
+	bool setname:1;
 };
 
 extern int commonio_setname (struct commonio_db *, const char *);
-extern int commonio_present (const struct commonio_db *);
+extern bool commonio_present (const struct commonio_db *db);
 extern int commonio_lock (struct commonio_db *);
-extern int commonio_lock_nowait (struct commonio_db *);
+extern int commonio_lock_nowait (struct commonio_db *, bool log);
 extern int commonio_open (struct commonio_db *, int);
-extern const void *commonio_locate (struct commonio_db *, const char *);
+extern /*@observer@*/ /*@null@*/const void *commonio_locate (struct commonio_db *, const char *);
 extern int commonio_update (struct commonio_db *, const void *);
+#ifdef ENABLE_SUBIDS
+extern int commonio_append (struct commonio_db *, const void *);
+#endif				/* ENABLE_SUBIDS */
 extern int commonio_remove (struct commonio_db *, const char *);
 extern int commonio_rewind (struct commonio_db *);
-extern const void *commonio_next (struct commonio_db *);
+extern /*@observer@*/ /*@null@*/const void *commonio_next (struct commonio_db *);
 extern int commonio_close (struct commonio_db *);
 extern int commonio_unlock (struct commonio_db *);
 extern void commonio_del_entry (struct commonio_db *,
-				const struct commonio_entry *);
+                                const struct commonio_entry *);
 extern int commonio_sort_wrt (struct commonio_db *shadow,
-			      struct commonio_db *passwd);
+                              const struct commonio_db *passwd);
 extern int commonio_sort (struct commonio_db *db,
-			  int (*cmp) (const void *, const void *));
+                          int (*cmp) (const void *, const void *));
 
 #endif

lib/defines.h

@@ -4,44 +4,63 @@
 #ifndef _DEFINES_H_
 #define _DEFINES_H_
 
-#define ISDIGIT_LOCALE(c) (IN_CTYPE_DOMAIN (c) && isdigit (c))
+#include "config.h"
+
+#if HAVE_STDBOOL_H
+# include <stdbool.h>
+#else
+# if ! HAVE__BOOL
+#  ifdef __cplusplus
+typedef bool _Bool;
+#  else
+typedef unsigned char _Bool;
+#  endif
+# endif
+# define bool _Bool
+# define false (0)
+# define true  (1)
+# define __bool_true_false_are_defined 1
+#endif
 
 /* Take care of NLS matters.  */
-
-#if HAVE_LOCALE_H
+#ifdef S_SPLINT_S
+extern char *setlocale(int categories, const char *locale);
+# define LC_ALL		(6)
+extern char * bindtextdomain (const char * domainname, const char * dirname);
+extern char * textdomain (const char * domainname);
+# define _(Text) Text
+# define ngettext(Msgid1, Msgid2, N) \
+    ((N) == 1 ? (const char *) (Msgid1) : (const char *) (Msgid2))
+#else
+#ifdef HAVE_LOCALE_H
 # include <locale.h>
+#else
+# undef setlocale
+# define setlocale(category, locale)	(NULL)
+# ifndef LC_ALL
+#  define LC_ALL	6
+# endif
 #endif
 
 #define gettext_noop(String) (String)
 /* #define gettext_def(String) "#define String" */
 
-#if ENABLE_NLS
+#ifdef ENABLE_NLS
 # include <libintl.h>
 # define _(Text) gettext (Text)
 #else
 # undef bindtextdomain
-# define bindtextdomain(Domain, Directory)	/* empty */
+# define bindtextdomain(Domain, Directory)	(NULL)
 # undef textdomain
-# define textdomain(Domain)	/* empty */
+# define textdomain(Domain)	(NULL)
 # define _(Text) Text
 # define ngettext(Msgid1, Msgid2, N) \
     ((N) == 1 ? (const char *) (Msgid1) : (const char *) (Msgid2))
 #endif
+#endif
 
-#if STDC_HEADERS
-# include <stdlib.h>
-# include <string.h>
-#else				/* not STDC_HEADERS */
-# ifndef HAVE_STRCHR
-#  define strchr index
-#  define strrchr rindex
-# endif
-char *strchr (), *strrchr (), *strtok ();
-
-# ifndef HAVE_MEMCPY
-#  define memcpy(d, s, n) bcopy((s), (d), (n))
-# endif
-#endif				/* not STDC_HEADERS */
+#include <stdlib.h>
+#include <string.h>
 
 #if HAVE_ERRNO_H
 # include <errno.h>
@@ -49,53 +68,40 @@ char *strchr (), *strrchr (), *strtok ();
 
 #include <sys/stat.h>
 #include <sys/types.h>
-#if HAVE_SYS_WAIT_H
-# include <sys/wait.h>
-#endif
-#ifndef WEXITSTATUS
-# define WEXITSTATUS(stat_val) ((unsigned)(stat_val) >> 8)
-#endif
-#ifndef WIFEXITED
-# define WIFEXITED(stat_val) (((stat_val) & 255) == 0)
-#endif
+#include <sys/wait.h>
 
 #if HAVE_UNISTD_H
 # include <unistd.h>
 #endif
 
-#if TIME_WITH_SYS_TIME
-# include <sys/time.h>
-# include <time.h>
-#else				/* not TIME_WITH_SYS_TIME */
-# if HAVE_SYS_TIME_H
-#  include <sys/time.h>
-# else
-#  include <time.h>
-# endif
-#endif				/* not TIME_WITH_SYS_TIME */
-
-#ifdef HAVE_MEMSET
-# define memzero(ptr, size) memset((void *)(ptr), 0, (size))
-#else
-# define memzero(ptr, size) bzero((char *)(ptr), (size))
+/*
+ * crypt(3), crypt_gensalt(3), and their
+ * feature test macros may be defined in here.
+ */
+#if HAVE_CRYPT_H
+# include <crypt.h>
 #endif
+
+#include <sys/time.h>
+#include <time.h>
+
+#ifdef HAVE_MEMSET_S
+# define memzero(ptr, size) memset_s((ptr), 0, (size))
+#elif defined HAVE_EXPLICIT_BZERO	/* !HAVE_MEMSET_S */
+# define memzero(ptr, size) explicit_bzero((ptr), (size))
+#else					/* !HAVE_MEMSET_S && HAVE_EXPLICIT_BZERO */
+static inline void memzero(void *ptr, size_t size)
+{
+	volatile unsigned char * volatile p = ptr;
+	while (size--) {
+		*p++ = '\0';
+	}
+}
+#endif					/* !HAVE_MEMSET_S && !HAVE_EXPLICIT_BZERO */
+
 #define strzero(s) memzero(s, strlen(s))	/* warning: evaluates twice */
 
-#ifdef HAVE_DIRENT_H		/* DIR_SYSV */
-# include <dirent.h>
-# define DIRECT dirent
-#else
-# ifdef HAVE_SYS_NDIR_H		/* DIR_XENIX */
-#  include <sys/ndir.h>
-# endif
-# ifdef HAVE_SYS_DIR_H		/* DIR_??? */
-#  include <sys/dir.h>
-# endif
-# ifdef HAVE_NDIR_H		/* DIR_BSD */
-#  include <ndir.h>
-# endif
-# define DIRECT direct
-#endif
+#include <dirent.h>
 
 /*
  * Possible cases:
@@ -136,7 +142,7 @@ char *strchr (), *strrchr (), *strtok ();
 
 /* cleaner than lots of #ifdefs everywhere - use this as follows:
    SYSLOG((LOG_CRIT, "user %s cracked root", user)); */
-#if ENABLE_NLS
+#ifdef ENABLE_NLS
 /* Temporarily set LC_TIME to "C" to avoid strange dates in syslog.
    This is a workaround for a more general syslog(d) design problem -
    syslogd should log the current system time for each event, and not
@@ -146,17 +152,20 @@ char *strchr (), *strrchr (), *strtok ();
  * --Nekral */
 #define SYSLOG(x)							\
 	do {								\
-		char *saved_locale = setlocale(LC_ALL, NULL);		\
-		if (saved_locale)					\
-			saved_locale = strdup(saved_locale);		\
-		if (saved_locale)					\
-			setlocale(LC_ALL, "C");			\
-		syslog x ;						\
-		if (saved_locale) {					\
-			setlocale(LC_ALL, saved_locale);		\
-			free(saved_locale);				\
+		char *old_locale = setlocale (LC_ALL, NULL);		\
+		char *saved_locale = NULL;				\
+		if (NULL != old_locale) {				\
+			saved_locale = strdup (old_locale);		\
 		}							\
-	} while (0)
+		if (NULL != saved_locale) {				\
+			(void) setlocale (LC_ALL, "C");			\
+		}							\
+		syslog x ;						\
+		if (NULL != saved_locale) {				\
+			(void) setlocale (LC_ALL, saved_locale);	\
+			free (saved_locale);				\
+		}							\
+	} while (false)
 #else				/* !ENABLE_NLS */
 #define SYSLOG(x) syslog x
 #endif				/* !ENABLE_NLS */
@@ -196,30 +205,6 @@ char *strchr (), *strrchr (), *strtok ();
 # define SEEK_END 2
 #endif
 
-#ifdef STAT_MACROS_BROKEN
-# define S_ISDIR(x) ((x) & S_IFMT) == S_IFDIR)
-# define S_ISREG(x) ((x) & S_IFMT) == S_IFREG)
-# ifdef S_IFLNK
-#  define S_ISLNK(x) ((x) & S_IFMT) == S_IFLNK)
-# endif
-#endif
-
-#ifndef S_ISLNK
-#define S_ISLNK(x) (0)
-#endif
-
-#if HAVE_LCHOWN
-#define LCHOWN lchown
-#else
-#define LCHOWN chown
-#endif
-
-#if HAVE_LSTAT
-#define LSTAT lstat
-#else
-#define LSTAT stat
-#endif
-
 #if HAVE_TERMIOS_H
 # include <termios.h>
 # define STTY(fd, termio) tcsetattr(fd, TCSANOW, termio)
@@ -303,6 +288,8 @@ extern char *strerror ();
 #define SHADOW_PASSWD_STRING "x"
 #endif
 
+#define SHADOW_SP_FLAG_UNSET ((unsigned long int)-1)
+
 #ifdef WITH_AUDIT
 #ifdef __u8			/* in case we use pam < 0.80 */
 #undef __u8
@@ -317,8 +304,41 @@ extern char *strerror ();
 /* To be used for verified unused parameters */
 #if defined(__GNUC__) && !defined(__STRICT_ANSI__)
 # define unused __attribute__((unused))
+# define format_attr(type, index, check) __attribute__((format (type, index, check)))
 #else
 # define unused
+# define format_attr(type, index, check)
+#endif
+
+/* ! Arguments evaluated twice ! */
+#ifndef MIN
+#define MIN(a,b) (((a) < (b)) ? (a) : (b))
+#endif
+#ifndef MAX
+#define MAX(x,y) (((x) > (y)) ? (x) : (y))
+#endif
+
+/* Maximum length of usernames */
+#ifdef HAVE_UTMPX_H
+# include <utmpx.h>
+# define USER_NAME_MAX_LENGTH (sizeof (((struct utmpx *)NULL)->ut_user))
+#else
+# include <utmp.h>
+# ifdef HAVE_STRUCT_UTMP_UT_USER
+#  define USER_NAME_MAX_LENGTH (sizeof (((struct utmp *)NULL)->ut_user))
+# else
+#  ifdef HAVE_STRUCT_UTMP_UT_NAME
+#   define USER_NAME_MAX_LENGTH (sizeof (((struct utmp *)NULL)->ut_name))
+#  else
+#   define USER_NAME_MAX_LENGTH 32
+#  endif
+# endif
+#endif
+
+#ifdef HAVE_SECURE_GETENV
+#  define shadow_getenv(name) secure_getenv(name)
+# else
+#  define shadow_getenv(name) getenv(name)
 #endif
 
 #endif				/* _DEFINES_H_ */

lib/encrypt.c

@@ -1,33 +1,10 @@
 /*
- * Copyright (c) 1990 - 1993, Julianne Frances Haugh
- * Copyright (c) 1996 - 2000, Marek Michałkiewicz
- * Copyright (c) 2005       , Tomasz Kłoczko
- * Copyright (c) 2007 - 2008, Nicolas François
- * All rights reserved.
+ * SPDX-FileCopyrightText: 1990 - 1993, Julianne Frances Haugh
+ * SPDX-FileCopyrightText: 1996 - 2000, Marek Michałkiewicz
+ * SPDX-FileCopyrightText: 2005       , Tomasz Kłoczko
+ * SPDX-FileCopyrightText: 2007 - 2010, Nicolas François
  *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- * 1. Redistributions of source code must retain the above copyright
- *    notice, this list of conditions and the following disclaimer.
- * 2. Redistributions in binary form must reproduce the above copyright
- *    notice, this list of conditions and the following disclaimer in the
- *    documentation and/or other materials provided with the distribution.
- * 3. The name of the copyright holders or contributors may not be used to
- *    endorse or promote products derived from this software without
- *    specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
- * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
- * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
- * PARTICULAR PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE COPYRIGHT
- * HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
- * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
- * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
- * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
- * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
- * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
- * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ * SPDX-License-Identifier: BSD-3-Clause
  */
 
 #include <config.h>
@@ -39,39 +16,45 @@
 
 #include "prototypes.h"
 #include "defines.h"
+#include "shadowlog_internal.h"
 
-char *pw_encrypt (const char *clear, const char *salt)
+/*@exposed@*//*@null@*/char *pw_encrypt (const char *clear, const char *salt)
 {
 	static char cipher[128];
 	char *cp;
 
 	cp = crypt (clear, salt);
-	if (!cp) {
+	if (NULL == cp) {
 		/*
 		 * Single Unix Spec: crypt() may return a null pointer,
-		 * and set errno to indicate an error.  The caller doesn't
-		 * expect us to return NULL, so...
+		 * and set errno to indicate an error. In this case return
+		 * the NULL so the caller can handle appropriately.
 		 */
-		perror ("crypt");
-		exit (1);
+		return NULL;
 	}
 
-	/* The GNU crypt does not return NULL if the algorithm is not
+	/* Some crypt() do not return NULL if the algorithm is not
 	 * supported, and return a DES encrypted password. */
-	if (salt && salt[0] == '$' && strlen (cp) <= 13)
+	if ((NULL != salt) && (salt[0] == '$') && (strlen (cp) <= 13))
 	{
-		const char *method;
+		/*@observer@*/const char *method;
 		switch (salt[1])
 		{
 			case '1':
 				method = "MD5";
 				break;
+			case '2':
+				method = "BCRYPT";
+				break;
 			case '5':
 				method = "SHA256";
 				break;
 			case '6':
 				method = "SHA512";
 				break;
+			case 'y':
+				method = "YESCRYPT";
+				break;
 			default:
 			{
 				static char nummethod[4] = "$x$";
@@ -79,15 +62,18 @@ char *pw_encrypt (const char *clear, const char *salt)
 				method = &nummethod[0];
 			}
 		}
-		fprintf (stderr,
-			 _("crypt method not supported by libcrypt? (%s)\n"),
-			  method);
-		exit (1);
+		(void) fprintf (shadow_logfd,
+		                _("crypt method not supported by libcrypt? (%s)\n"),
+		                method);
+		exit (EXIT_FAILURE);
 	}
 
-	if (strlen (cp) != 13)
+	if (strlen (cp) != 13) {
 		return cp;	/* nonstandard crypt() in libc, better bail out */
+	}
+
 	strcpy (cipher, cp);
 
 	return cipher;
 }
+

lib/exitcodes.h

@@ -1,30 +1,7 @@
 /*
- * Copyright (c) 2005 - 2006, Tomasz Kłoczko
- * All rights reserved.
+ * SPDX-FileCopyrightText: 2005 - 2006, Tomasz Kłoczko
  *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- * 1. Redistributions of source code must retain the above copyright
- *    notice, this list of conditions and the following disclaimer.
- * 2. Redistributions in binary form must reproduce the above copyright
- *    notice, this list of conditions and the following disclaimer in the
- *    documentation and/or other materials provided with the distribution.
- * 3. The name of the copyright holders or contributors may not be used to
- *    endorse or promote products derived from this software without
- *    specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
- * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
- * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
- * PARTICULAR PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE COPYRIGHT
- * HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
- * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
- * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
- * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
- * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
- * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
- * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ * SPDX-License-Identifier: BSD-3-Clause
  */
 
 /* $Id$ */
@@ -32,7 +9,12 @@
 /*
  * Exit codes used by shadow programs
  */
-#define E_SUCCESS       	0	/* success */
+#define E_SUCCESS       	EXIT_SUCCESS	/* success */
+/*
+ * FIXME: other values should differ from EXIT_FAILURE (and EXIT_SUCCESS).
+ *
+ * FIXME: reserve EXIT_FAILURE for internal failures.
+ */
 #define E_NOPERM        	1	/* permission denied */
 #define E_USAGE         	2	/* invalid command syntax */
 #define E_BAD_ARG       	3	/* invalid argument to option */

lib/faillog.h

@@ -1,32 +1,9 @@
 /*
- * Copyright (c) 1989 - 1994, Julianne Frances Haugh
- * Copyright (c) 1996 - 1997, Marek Michałkiewicz
- * Copyright (c) 2005       , Tomasz Kłoczko
- * All rights reserved.
+ * SPDX-FileCopyrightText: 1989 - 1994, Julianne Frances Haugh
+ * SPDX-FileCopyrightText: 1996 - 1997, Marek Michałkiewicz
+ * SPDX-FileCopyrightText: 2005       , Tomasz Kłoczko
  *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- * 1. Redistributions of source code must retain the above copyright
- *    notice, this list of conditions and the following disclaimer.
- * 2. Redistributions in binary form must reproduce the above copyright
- *    notice, this list of conditions and the following disclaimer in the
- *    documentation and/or other materials provided with the distribution.
- * 3. The name of the copyright holders or contributors may not be used to
- *    endorse or promote products derived from this software without
- *    specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
- * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
- * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
- * PARTICULAR PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE COPYRIGHT
- * HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
- * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
- * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
- * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
- * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
- * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
- * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ * SPDX-License-Identifier: BSD-3-Clause
  */
 
 /*
@@ -45,8 +22,8 @@
 struct faillog {
 	short fail_cnt;		/* failures since last success */
 	short fail_max;		/* failures before turning account off */
-	char fail_line[12];	/* last failure occured here */
-	time_t fail_time;	/* last failure occured then */
+	char fail_line[12];	/* last failure occurred here */
+	time_t fail_time;	/* last failure occurred then */
 	/*
 	 * If nonzero, the account will be re-enabled if there are no
 	 * failures for fail_locktime seconds since last failure.

lib/fields.c

@@ -1,33 +1,10 @@
 /*
- * Copyright (c) 1990       , Julianne Frances Haugh
- * Copyright (c) 1996 - 1997, Marek Michałkiewicz
- * Copyright (c) 2003 - 2005, Tomasz Kłoczko
- * Copyright (c) 2007       , Nicolas François
- * All rights reserved.
+ * SPDX-FileCopyrightText: 1990       , Julianne Frances Haugh
+ * SPDX-FileCopyrightText: 1996 - 1997, Marek Michałkiewicz
+ * SPDX-FileCopyrightText: 2003 - 2005, Tomasz Kłoczko
+ * SPDX-FileCopyrightText: 2007       , Nicolas François
  *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- * 1. Redistributions of source code must retain the above copyright
- *    notice, this list of conditions and the following disclaimer.
- * 2. Redistributions in binary form must reproduce the above copyright
- *    notice, this list of conditions and the following disclaimer in the
- *    documentation and/or other materials provided with the distribution.
- * 3. The name of the copyright holders or contributors may not be used to
- *    endorse or promote products derived from this software without
- *    specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
- * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
- * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
- * PARTICULAR PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE COPYRIGHT
- * HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
- * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
- * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
- * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
- * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
- * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
- * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ * SPDX-License-Identifier: BSD-3-Clause
  */
 
 #include <config.h>
@@ -54,6 +31,10 @@ int valid_field (const char *field, const char *illegal)
 	const char *cp;
 	int err = 0;
 
+	if (NULL == field) {
+		return -1;
+	}
+
 	/* For each character of field, search if it appears in the list
 	 * of illegal characters. */
 	for (cp = field; '\0' != *cp; cp++) {

lib/fputsx.c

@@ -1,33 +1,10 @@
 /*
- * Copyright (c) 1990 - 1994, Julianne Frances Haugh
- * Copyright (c) 1996 - 1999, Marek Michałkiewicz
- * Copyright (c) 2005       , Tomasz Kłoczko
- * Copyright (c) 2008       , Nicolas François
- * All rights reserved.
+ * SPDX-FileCopyrightText: 1990 - 1994, Julianne Frances Haugh
+ * SPDX-FileCopyrightText: 1996 - 1999, Marek Michałkiewicz
+ * SPDX-FileCopyrightText: 2005       , Tomasz Kłoczko
+ * SPDX-FileCopyrightText: 2008       , Nicolas François
  *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- * 1. Redistributions of source code must retain the above copyright
- *    notice, this list of conditions and the following disclaimer.
- * 2. Redistributions in binary form must reproduce the above copyright
- *    notice, this list of conditions and the following disclaimer in the
- *    documentation and/or other materials provided with the distribution.
- * 3. The name of the copyright holders or contributors may not be used to
- *    endorse or promote products derived from this software without
- *    specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
- * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
- * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
- * PARTICULAR PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE COPYRIGHT
- * HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
- * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
- * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
- * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
- * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
- * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
- * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ * SPDX-License-Identifier: BSD-3-Clause
  */
 
 #include <config.h>
@@ -39,23 +16,29 @@
 #ident "$Id$"
 
 
-char *fgetsx (char *buf, int cnt, FILE * f)
+/*@null@*/char *fgetsx (/*@returned@*/ /*@out@*/char *buf, int cnt, FILE * f)
 {
 	char *cp = buf;
 	char *ep;
 
 	while (cnt > 0) {
-		if (fgets (cp, cnt, f) == 0) {
-			if (cp == buf)
+		if (fgets (cp, cnt, f) != cp) {
+			if (cp == buf) {
 				return 0;
-			else
+			} else {
 				break;
+			}
 		}
-		if ((ep = strrchr (cp, '\\')) && *(ep + 1) == '\n') {
-			if ((cnt -= ep - cp) > 0)
-				*(cp = ep) = '\0';
-		} else
+		ep = strrchr (cp, '\\');
+		if ((NULL != ep) && (*(ep + 1) == '\n')) {
+			cnt -= ep - cp;
+			if (cnt > 0) {
+				cp = ep;
+				*cp = '\0';
+			}
+		} else {
 			break;
+		}
 	}
 	return buf;
 }
@@ -64,9 +47,10 @@ int fputsx (const char *s, FILE * stream)
 {
 	int i;
 
-	for (i = 0; *s; i++, s++) {
-		if (putc (*s, stream) == EOF)
+	for (i = 0; '\0' != *s; i++, s++) {
+		if (putc (*s, stream) == EOF) {
 			return EOF;
+		}
 
 #if 0				/* The standard getgr*() can't handle that.  --marekm */
 		if (i > (BUFSIZ / 2)) {
@@ -80,3 +64,4 @@ int fputsx (const char *s, FILE * stream)
 	}
 	return 0;
 }
+

lib/get_gid.c

@@ -0,0 +1,31 @@
+/*
+ * SPDX-FileCopyrightText: 2009       , Nicolas François
+ *
+ * SPDX-License-Identifier: BSD-3-Clause
+ */
+
+#include <config.h>
+
+#ident "$Id$"
+
+#include "prototypes.h"
+#include "defines.h"
+
+int get_gid (const char *gidstr, gid_t *gid)
+{
+	long long int val;
+	char *endptr;
+
+	errno = 0;
+	val = strtoll (gidstr, &endptr, 10);
+	if (   ('\0' == *gidstr)
+	    || ('\0' != *endptr)
+	    || (ERANGE == errno)
+	    || (/*@+longintegral@*/val != (gid_t)val)/*@=longintegral@*/) {
+		return 0;
+	}
+
+	*gid = (gid_t)val;
+	return 1;
+}
+

lib/get_pid.c

@@ -0,0 +1,31 @@
+/*
+ * SPDX-FileCopyrightText: 2009       , Nicolas François
+ *
+ * SPDX-License-Identifier: BSD-3-Clause
+ */
+
+#include <config.h>
+
+#ident "$Id$"
+
+#include "prototypes.h"
+#include "defines.h"
+
+int get_pid (const char *pidstr, pid_t *pid)
+{
+	long long int val;
+	char *endptr;
+
+	errno = 0;
+	val = strtoll (pidstr, &endptr, 10);
+	if (   ('\0' == *pidstr)
+	    || ('\0' != *endptr)
+	    || (ERANGE == errno)
+	    || (/*@+longintegral@*/val != (pid_t)val)/*@=longintegral@*/) {
+		return 0;
+	}
+
+	*pid = (pid_t)val;
+	return 1;
+}
+

lib/get_uid.c

@@ -0,0 +1,31 @@
+/*
+ * SPDX-FileCopyrightText: 2009       , Nicolas François
+ *
+ * SPDX-License-Identifier: BSD-3-Clause
+ */
+
+#include <config.h>
+
+#ident "$Id$"
+
+#include "prototypes.h"
+#include "defines.h"
+
+int get_uid (const char *uidstr, uid_t *uid)
+{
+	long long int val;
+	char *endptr;
+
+	errno = 0;
+	val = strtoll (uidstr, &endptr, 10);
+	if (   ('\0' == *uidstr)
+	    || ('\0' != *endptr)
+	    || (ERANGE == errno)
+	    || (/*@+longintegral@*/val != (uid_t)val)/*@=longintegral@*/) {
+		return 0;
+	}
+
+	*uid = (uid_t)val;
+	return 1;
+}
+

lib/getdef.c

@@ -1,33 +1,10 @@
 /*
- * Copyright (c) 1991 - 1994, Julianne Frances Haugh
- * Copyright (c) 1996 - 2000, Marek Michałkiewicz
- * Copyright (c) 2002 - 2006, Tomasz Kłoczko
- * Copyright (c) 2007 - 2008, Nicolas François
- * All rights reserved.
+ * SPDX-FileCopyrightText: 1991 - 1994, Julianne Frances Haugh
+ * SPDX-FileCopyrightText: 1996 - 2000, Marek Michałkiewicz
+ * SPDX-FileCopyrightText: 2002 - 2006, Tomasz Kłoczko
+ * SPDX-FileCopyrightText: 2007 - 2008, Nicolas François
  *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- * 1. Redistributions of source code must retain the above copyright
- *    notice, this list of conditions and the following disclaimer.
- * 2. Redistributions in binary form must reproduce the above copyright
- *    notice, this list of conditions and the following disclaimer in the
- *    documentation and/or other materials provided with the distribution.
- * 3. The name of the copyright holders or contributors may not be used to
- *    endorse or promote products derived from this software without
- *    specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
- * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
- * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
- * PARTICULAR PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE COPYRIGHT
- * HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
- * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
- * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
- * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
- * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
- * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
- * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ * SPDX-License-Identifier: BSD-3-Clause
  */
 
 #include <config.h>
@@ -39,15 +16,57 @@
 #include <stdio.h>
 #include <stdlib.h>
 #include <ctype.h>
+#include <errno.h>
+#ifdef USE_ECONF
+#include <libeconf.h>
+#endif
 #include "getdef.h"
+#include "shadowlog_internal.h"
 /*
  * A configuration item definition.
  */
 struct itemdef {
-	const char *name;	/* name of the item                     */
-	char *value;		/* value given, or NULL if no value     */
+	/*@null@*/const char *name;	/* name of the item                     */
+	/*@null@*/char *value;		/* value given, or NULL if no value     */
 };
 
+#define PAMDEFS					\
+	{"CHFN_AUTH", NULL},			\
+	{"CHSH_AUTH", NULL},			\
+	{"CRACKLIB_DICTPATH", NULL},		\
+	{"ENV_HZ", NULL},			\
+	{"ENVIRON_FILE", NULL},			\
+	{"ENV_TZ", NULL},			\
+	{"FAILLOG_ENAB", NULL},			\
+	{"FTMP_FILE", NULL},			\
+	{"HMAC_CRYPTO_ALGO", NULL},		\
+	{"ISSUE_FILE", NULL},			\
+	{"LASTLOG_ENAB", NULL},			\
+	{"LOGIN_STRING", NULL},			\
+	{"MAIL_CHECK_ENAB", NULL},		\
+	{"MOTD_FILE", NULL},			\
+	{"NOLOGINS_FILE", NULL},		\
+	{"OBSCURE_CHECKS_ENAB", NULL},		\
+	{"PASS_ALWAYS_WARN", NULL},		\
+	{"PASS_CHANGE_TRIES", NULL},		\
+	{"PASS_MAX_LEN", NULL},			\
+	{"PASS_MIN_LEN", NULL},			\
+	{"PORTTIME_CHECKS_ENAB", NULL},		\
+	{"QUOTAS_ENAB", NULL},			\
+	{"SU_WHEEL_ONLY", NULL},		\
+	{"ULIMIT", NULL},
+
+/*
+ * Items used in other tools (util-linux, etc.)
+ */
+#define FOREIGNDEFS				\
+	{"ALWAYS_SET_PATH", NULL},		\
+	{"ENV_ROOTPATH", NULL},			\
+	{"LOGIN_KEEP_USERNAME", NULL},		\
+	{"LOGIN_PLAIN_PROMPT", NULL},		\
+	{"MOTD_FIRSTONLY", NULL},		\
+
+
 #define NUMDEFS	(sizeof(def_table)/sizeof(def_table[0]))
 static struct itemdef def_table[] = {
 	{"CHFN_RESTRICT", NULL},
@@ -63,8 +82,10 @@ static struct itemdef def_table[] = {
 	{"FAKE_SHELL", NULL},
 	{"GID_MAX", NULL},
 	{"GID_MIN", NULL},
+	{"HOME_MODE", NULL},
 	{"HUSHLOGIN_FILE", NULL},
 	{"KILLCHAR", NULL},
+	{"LASTLOG_UID_MAX", NULL},
 	{"LOGIN_RETRIES", NULL},
 	{"LOGIN_TIMEOUT", NULL},
 	{"LOG_OK_LOGINS", NULL},
@@ -73,6 +94,7 @@ static struct itemdef def_table[] = {
 	{"MAIL_FILE", NULL},
 	{"MAX_MEMBERS_PER_GROUP", NULL},
 	{"MD5_CRYPT_ENAB", NULL},
+	{"NONEXISTENT", NULL},
 	{"PASS_MAX_DAYS", NULL},
 	{"PASS_MIN_DAYS", NULL},
 	{"PASS_WARN_AGE", NULL},
@@ -80,6 +102,19 @@ static struct itemdef def_table[] = {
 	{"SHA_CRYPT_MAX_ROUNDS", NULL},
 	{"SHA_CRYPT_MIN_ROUNDS", NULL},
 #endif
+#ifdef USE_BCRYPT
+	{"BCRYPT_MAX_ROUNDS", NULL},
+	{"BCRYPT_MIN_ROUNDS", NULL},
+#endif
+#ifdef USE_YESCRYPT
+	{"YESCRYPT_COST_FACTOR", NULL},
+#endif
+	{"SUB_GID_COUNT", NULL},
+	{"SUB_GID_MAX", NULL},
+	{"SUB_GID_MIN", NULL},
+	{"SUB_UID_COUNT", NULL},
+	{"SUB_UID_MAX", NULL},
+	{"SUB_UID_MIN", NULL},
 	{"SULOG_FILE", NULL},
 	{"SU_NAME", NULL},
 	{"SYS_GID_MAX", NULL},
@@ -95,46 +130,50 @@ static struct itemdef def_table[] = {
 	{"USERDEL_CMD", NULL},
 	{"USERGROUPS_ENAB", NULL},
 #ifndef USE_PAM
-	{"CHFN_AUTH", NULL},
-	{"CHSH_AUTH", NULL},
-	{"CRACKLIB_DICTPATH", NULL},
-	{"ENV_HZ", NULL},
-	{"ENVIRON_FILE", NULL},
-	{"ENV_TZ", NULL},
-	{"FAILLOG_ENAB", NULL},
-	{"FTMP_FILE", NULL},
-	{"ISSUE_FILE", NULL},
-	{"LASTLOG_ENAB", NULL},
-	{"LOGIN_STRING", NULL},
-	{"MAIL_CHECK_ENAB", NULL},
-	{"MOTD_FILE", NULL},
-	{"NOLOGINS_FILE", NULL},
-	{"OBSCURE_CHECKS_ENAB", NULL},
-	{"PASS_ALWAYS_WARN", NULL},
-	{"PASS_CHANGE_TRIES", NULL},
-	{"PASS_MAX_LEN", NULL},
-	{"PASS_MIN_LEN", NULL},
-	{"PORTTIME_CHECKS_ENAB", NULL},
-	{"QUOTAS_ENAB", NULL},
-	{"SU_WHEEL_ONLY", NULL},
-	{"ULIMIT", NULL},
+	PAMDEFS
 #endif
 #ifdef USE_SYSLOG
 	{"SYSLOG_SG_ENAB", NULL},
 	{"SYSLOG_SU_ENAB", NULL},
 #endif
+#ifdef WITH_TCB
+	{"TCB_AUTH_GROUP", NULL},
+	{"TCB_SYMLINKS", NULL},
+	{"USE_TCB", NULL},
+#endif
+	{"FORCE_SHADOW", NULL},
+	{"GRANT_AUX_GROUP_SUBIDS", NULL},
+	{"PREVENT_NO_AUTH", NULL},
 	{NULL, NULL}
 };
 
+#define NUMKNOWNDEFS	(sizeof(knowndef_table)/sizeof(knowndef_table[0]))
+static struct itemdef knowndef_table[] = {
+#ifdef USE_PAM
+	PAMDEFS
+#endif
+	FOREIGNDEFS
+	{NULL, NULL}
+};
+
+#ifdef USE_ECONF
+#ifdef VENDORDIR
+static const char* vendordir = VENDORDIR;
+#else
+static const char* vendordir = NULL;
+#endif
+static const char* sysconfdir = "/etc";
+#else
 #ifndef LOGINDEFS
 #define LOGINDEFS "/etc/login.defs"
 #endif
 
-static char def_fname[] = LOGINDEFS;	/* login config defs file       */
-static int def_loaded = 0;	/* are defs already loaded?     */
+static const char* def_fname = LOGINDEFS;	/* login config defs file       */
+#endif
+static bool def_loaded = false;		/* are defs already loaded?     */
 
 /* local function prototypes */
-static struct itemdef *def_find (const char *);
+static /*@observer@*/ /*@null@*/struct itemdef *def_find (const char *);
 static void def_load (void);
 
 
@@ -145,14 +184,16 @@ static void def_load (void);
  * defined.  First time invoked, will load definitions from the file.
  */
 
-char *getdef_str (const char *item)
+/*@observer@*/ /*@null@*/const char *getdef_str (const char *item)
 {
 	struct itemdef *d;
 
-	if (!def_loaded)
+	if (!def_loaded) {
 		def_load ();
+	}
 
-	return ((d = def_find (item)) == NULL ? (char *) NULL : d->value);
+	d = def_find (item);
+	return ((NULL == d)? (const char *) NULL : d->value);
 }
 
 
@@ -162,15 +203,18 @@ char *getdef_str (const char *item)
  * Return TRUE if specified item is defined as "yes", else FALSE.
  */
 
-int getdef_bool (const char *item)
+bool getdef_bool (const char *item)
 {
 	struct itemdef *d;
 
-	if (!def_loaded)
+	if (!def_loaded) {
 		def_load ();
+	}
 
-	if ((d = def_find (item)) == NULL || d->value == NULL)
-		return 0;
+	d = def_find (item);
+	if ((NULL == d) || (NULL == d->value)) {
+		return false;
+	}
 
 	return (strcasecmp (d->value, "yes") == 0);
 }
@@ -187,14 +231,27 @@ int getdef_bool (const char *item)
 int getdef_num (const char *item, int dflt)
 {
 	struct itemdef *d;
+	long val;
 
-	if (!def_loaded)
+	if (!def_loaded) {
 		def_load ();
+	}
 
-	if ((d = def_find (item)) == NULL || d->value == NULL)
+	d = def_find (item);
+	if ((NULL == d) || (NULL == d->value)) {
 		return dflt;
+	}
 
-	return (int) strtol (d->value, (char **) NULL, 0);
+	if (   (getlong (d->value, &val) == 0)
+	    || (val > INT_MAX)
+	    || (val < INT_MIN)) {
+		fprintf (shadow_logfd,
+		         _("configuration error - cannot parse %s value: '%s'"),
+		         item, d->value);
+		return dflt;
+	}
+
+	return (int) val;
 }
 
 
@@ -209,14 +266,27 @@ int getdef_num (const char *item, int dflt)
 unsigned int getdef_unum (const char *item, unsigned int dflt)
 {
 	struct itemdef *d;
+	long val;
 
-	if (!def_loaded)
+	if (!def_loaded) {
 		def_load ();
+	}
 
-	if ((d = def_find (item)) == NULL || d->value == NULL)
+	d = def_find (item);
+	if ((NULL == d) || (NULL == d->value)) {
 		return dflt;
+	}
 
-	return (unsigned int) strtoul (d->value, (char **) NULL, 0);
+	if (   (getlong (d->value, &val) == 0)
+	    || (val < 0)
+	    || (val > INT_MAX)) {
+		fprintf (shadow_logfd,
+		         _("configuration error - cannot parse %s value: '%s'"),
+		         item, d->value);
+		return dflt;
+	}
+
+	return (unsigned int) val;
 }
 
 
@@ -231,16 +301,58 @@ unsigned int getdef_unum (const char *item, unsigned int dflt)
 long getdef_long (const char *item, long dflt)
 {
 	struct itemdef *d;
+	long val;
 
-	if (!def_loaded)
+	if (!def_loaded) {
 		def_load ();
+	}
 
-	if ((d = def_find (item)) == NULL || d->value == NULL)
+	d = def_find (item);
+	if ((NULL == d) || (NULL == d->value)) {
 		return dflt;
+	}
 
-	return strtol (d->value, (char **) NULL, 0);
+	if (getlong (d->value, &val) == 0) {
+		fprintf (shadow_logfd,
+		         _("configuration error - cannot parse %s value: '%s'"),
+		         item, d->value);
+		return dflt;
+	}
+
+	return val;
 }
 
+/*
+ * getdef_ulong - get unsigned long numerical value from table of definitions
+ *
+ * Returns numeric value of specified item, else the "dflt" value if
+ * the item is not defined.  Octal (leading "0") and hex (leading "0x")
+ * values are handled.
+ */
+
+unsigned long getdef_ulong (const char *item, unsigned long dflt)
+{
+	struct itemdef *d;
+	unsigned long val;
+
+	if (!def_loaded) {
+		def_load ();
+	}
+
+	d = def_find (item);
+	if ((NULL == d) || (NULL == d->value)) {
+		return dflt;
+	}
+
+	if (getulong (d->value, &val) == 0) {
+		fprintf (shadow_logfd,
+		         _("configuration error - cannot parse %s value: '%s'"),
+		         item, d->value);
+		return dflt;
+	}
+
+	return val;
+}
 
 /*
  * putdef_str - override the value read from /etc/login.defs
@@ -252,28 +364,33 @@ int putdef_str (const char *name, const char *value)
 	struct itemdef *d;
 	char *cp;
 
-	if (!def_loaded)
+	if (!def_loaded) {
 		def_load ();
+	}
 
 	/*
 	 * Locate the slot to save the value.  If this parameter
 	 * is unknown then "def_find" will print an err message.
 	 */
-	if ((d = def_find (name)) == NULL)
+	d = def_find (name);
+	if (NULL == d) {
 		return -1;
+	}
 
 	/*
 	 * Save off the value.
 	 */
-	if ((cp = strdup (value)) == NULL) {
-		fputs (_("Could not allocate space for config info.\n"),
-		       stderr);
+	cp = strdup (value);
+	if (NULL == cp) {
+		(void) fputs (_("Could not allocate space for config info.\n"),
+		              shadow_logfd);
 		SYSLOG ((LOG_ERR, "could not allocate space for config info"));
 		return -1;
 	}
 
-	if (d->value)
+	if (NULL != d->value) {
 		free (d->value);
+	}
 
 	d->value = cp;
 	return 0;
@@ -287,33 +404,69 @@ int putdef_str (const char *name, const char *value)
  * specified configuration option.
  */
 
-static struct itemdef *def_find (const char *name)
+static /*@observer@*/ /*@null@*/struct itemdef *def_find (const char *name)
 {
-	int n;
 	struct itemdef *ptr;
 
-
 	/*
 	 * Search into the table.
 	 */
 
-	for (ptr = def_table; ptr->name; ptr++) {
-		if (!(n = strcmp (ptr->name, name)))
+	for (ptr = def_table; NULL != ptr->name; ptr++) {
+		if (strcmp (ptr->name, name) == 0) {
 			return ptr;
+		}
 	}
 
 	/*
 	 * Item was never found.
 	 */
 
-	fprintf (stderr,
-		 _
-		 ("configuration error - unknown item '%s' (notify administrator)\n"),
-		 name);
+	for (ptr = knowndef_table; NULL != ptr->name; ptr++) {
+		if (strcmp (ptr->name, name) == 0) {
+			goto out;
+		}
+	}
+	fprintf (shadow_logfd,
+	         _("configuration error - unknown item '%s' (notify administrator)\n"),
+	         name);
 	SYSLOG ((LOG_CRIT, "unknown configuration item `%s'", name));
+
+out:
 	return (struct itemdef *) NULL;
 }
 
+/*
+ * setdef_config_file - set the default configuration file path
+ *
+ * must be called prior to any def* calls.
+ */
+
+void setdef_config_file (const char* file)
+{
+#ifdef USE_ECONF
+	size_t len;
+	char* cp;
+
+	len = strlen(file) + strlen(sysconfdir) + 2;
+	cp = malloc(len);
+	if (cp == NULL)
+		exit (13);
+	snprintf(cp, len, "%s/%s", file, sysconfdir);
+	sysconfdir = cp;
+#ifdef VENDORDIR
+	len = strlen(file) + strlen(vendordir) + 2;
+	cp = malloc(len);
+	if (cp == NULL)
+		exit (13);
+	snprintf(cp, len, "%s/%s", file, vendordir);
+	vendordir = cp;
+#endif
+#else
+	def_fname = file;
+#endif
+}
+
 /*
  * def_load - load configuration table
  *
@@ -322,38 +475,88 @@ static struct itemdef *def_find (const char *name)
 
 static void def_load (void)
 {
+#ifdef USE_ECONF
+	econf_file *defs_file = NULL;
+	econf_err error;
+	char **keys;
+	size_t key_number;
+#else
 	int i;
 	FILE *fp;
 	char buf[1024], *name, *value, *s;
-
-	/*
-	 * Open the configuration definitions file.
-	 */
-	if ((fp = fopen (def_fname, "r")) == NULL) {
-		SYSLOG ((LOG_CRIT, "cannot open login definitions %s [%m]",
-			 def_fname));
-		exit (1);
-	}
+#endif
 
 	/*
 	 * Set the initialized flag.
 	 * (do it early to prevent recursion in putdef_str())
 	 */
-	++def_loaded;
+	def_loaded = true;
+
+#ifdef USE_ECONF
+
+	error = econf_readDirs (&defs_file, vendordir, sysconfdir, "login", "defs", " \t", "#");
+	if (error) {
+		if (error == ECONF_NOFILE)
+			return;
+
+		SYSLOG ((LOG_CRIT, "cannot open login definitions [%s]",
+			econf_errString(error)));
+		exit (EXIT_FAILURE);
+	}
+
+	if ((error = econf_getKeys(defs_file, NULL, &key_number, &keys))) {
+		SYSLOG ((LOG_CRIT, "cannot read login definitions [%s]",
+			econf_errString(error)));
+		exit (EXIT_FAILURE);
+	}
+
+	for (size_t i = 0; i < key_number; i++) {
+		char *value;
+
+		econf_getStringValue(defs_file, NULL, keys[i], &value);
+
+		/*
+		 * Store the value in def_table.
+		 *
+		 * Ignore failures to load the login.defs file.
+		 * The error was already reported to the user and to
+		 * syslog. The tools will just use their default values.
+		 */
+		(void)putdef_str (keys[i], value);
+	}
+
+	econf_free (keys);
+	econf_free (defs_file);
+#else
+	/*
+	 * Open the configuration definitions file.
+	 */
+	fp = fopen (def_fname, "r");
+	if (NULL == fp) {
+		if (errno == ENOENT)
+			return;
+
+		int err = errno;
+		SYSLOG ((LOG_CRIT, "cannot open login definitions %s [%s]",
+		         def_fname, strerror (err)));
+		exit (EXIT_FAILURE);
+	}
 
 	/*
 	 * Go through all of the lines in the file.
 	 */
-	while (fgets (buf, sizeof (buf), fp) != NULL) {
+	while (fgets (buf, (int) sizeof (buf), fp) != NULL) {
 
 		/*
 		 * Trim trailing whitespace.
 		 */
-		for (i = strlen (buf) - 1; i >= 0; --i) {
-			if (!isspace (buf[i]))
+		for (i = (int) strlen (buf) - 1; i >= 0; --i) {
+			if (!isspace (buf[i])) {
 				break;
+			}
 		}
-		buf[++i] = '\0';
+		i++;
+		buf[i] = '\0';
 
 		/*
 		 * Break the line into two fields.
@@ -372,17 +575,23 @@ static void def_load (void)
 
 		/*
 		 * Store the value in def_table.
+		 *
+		 * Ignore failures to load the login.defs file.
+		 * The error was already reported to the user and to
+		 * syslog. The tools will just use their default values.
 		 */
-		putdef_str (name, value);
+		(void)putdef_str (name, value);
 	}
 
-	if (ferror (fp)) {
-		SYSLOG ((LOG_CRIT, "cannot read login definitions %s [%m]",
-			 def_fname));
-		exit (1);
+	if (ferror (fp) != 0) {
+		int err = errno;
+		SYSLOG ((LOG_CRIT, "cannot read login definitions %s [%s]",
+		         def_fname, strerror (err)));
+		exit (EXIT_FAILURE);
 	}
 
 	(void) fclose (fp);
+#endif
 }
 
 
@@ -396,18 +605,22 @@ int main (int argc, char **argv)
 	def_load ();
 
 	for (i = 0; i < NUMDEFS; ++i) {
-		if ((d = def_find (def_table[i].name)) == NULL)
+		d = def_find (def_table[i].name);
+		if (NULL == d) {
 			printf ("error - lookup '%s' failed\n",
-				def_table[i].name);
-		else
+			        def_table[i].name);
+		} else {
 			printf ("%4d %-24s %s\n", i + 1, d->name, d->value);
+		}
 	}
 	for (i = 1; i < argc; i++) {
-		if ((cp = getdef_str (argv[1])) != NULL)
+		cp = getdef_str (argv[1]);
+		if (NULL != cp) {
 			printf ("%s `%s'\n", argv[1], cp);
-		else
+		} else {
 			printf ("%s not found\n", argv[1]);
+		}
 	}
-	exit (0);
+	exit (EXIT_SUCCESS);
 }
 #endif

lib/getdef.h

@@ -1,43 +1,23 @@
 /*
- * Copyright (c) 1991 - 1994, Julianne Frances Haugh
- * Copyright (c) 1996 - 2000, Marek Michałkiewicz
- * Copyright (c) 2002 - 2006, Tomasz Kłoczko
- * All rights reserved.
+ * SPDX-FileCopyrightText: 1991 - 1994, Julianne Frances Haugh
+ * SPDX-FileCopyrightText: 1996 - 2000, Marek Michałkiewicz
+ * SPDX-FileCopyrightText: 2002 - 2006, Tomasz Kłoczko
+ * SPDX-FileCopyrightText: 2008       , Nicolas François
  *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- * 1. Redistributions of source code must retain the above copyright
- *    notice, this list of conditions and the following disclaimer.
- * 2. Redistributions in binary form must reproduce the above copyright
- *    notice, this list of conditions and the following disclaimer in the
- *    documentation and/or other materials provided with the distribution.
- * 3. The name of the copyright holders or contributors may not be used to
- *    endorse or promote products derived from this software without
- *    specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
- * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
- * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
- * PARTICULAR PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE COPYRIGHT
- * HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
- * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
- * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
- * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
- * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
- * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
- * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ * SPDX-License-Identifier: BSD-3-Clause
  */
 #ifndef _GETDEF_H
 #define _GETDEF_H
 
 /* getdef.c */
-extern int getdef_bool (const char *);
+extern bool getdef_bool (const char *);
 extern long getdef_long (const char *, long);
 extern int getdef_num (const char *, int);
+extern unsigned long getdef_ulong (const char *, unsigned long);
 extern unsigned int getdef_unum (const char *, unsigned int);
-extern char *getdef_str (const char *);
+extern /*@observer@*/ /*@null@*/const char *getdef_str (const char *);
 extern int putdef_str (const char *, const char *);
+extern void setdef_config_file (const char* file);
 
 /* default UMASK value if not specified in /etc/login.defs */
 #define		GETDEF_DEFAULT_UMASK	022

lib/getlong.c

@@ -0,0 +1,36 @@
+/*
+ * SPDX-FileCopyrightText: 2007 - 2009, Nicolas François
+ *
+ * SPDX-License-Identifier: BSD-3-Clause
+ */
+
+#include <config.h>
+
+#ident "$Id$"
+
+#include <stdlib.h>
+#include <errno.h>
+#include "prototypes.h"
+
+/*
+ * getlong - extract a long integer provided by the numstr string in *result
+ *
+ * It supports decimal, hexadecimal or octal representations.
+ *
+ * Returns 0 on failure, 1 on success.
+ */
+int getlong (const char *numstr, /*@out@*/long int *result)
+{
+	long val;
+	char *endptr;
+
+	errno = 0;
+	val = strtol (numstr, &endptr, 0);
+	if (('\0' == *numstr) || ('\0' != *endptr) || (ERANGE == errno)) {
+		return 0;
+	}
+
+	*result = val;
+	return 1;
+}
+

lib/getulong.c

@@ -0,0 +1,39 @@
+/*
+ * SPDX-FileCopyrightText: 2007 - 2009, Nicolas François
+ *
+ * SPDX-License-Identifier: BSD-3-Clause
+ */
+
+#include <config.h>
+
+#ident "$Id: getlong.c 2763 2009-04-23 09:57:03Z nekral-guest $"
+
+#include <stdlib.h>
+#include <errno.h>
+#include "prototypes.h"
+
+/*
+ * getulong - extract an unsigned long integer provided by the numstr string in *result
+ *
+ * It supports decimal, hexadecimal or octal representations.
+ *
+ * Returns 0 on failure, 1 on success.
+ */
+int getulong (const char *numstr, /*@out@*/unsigned long int *result)
+{
+	unsigned long int val;
+	char *endptr;
+
+	errno = 0;
+	val = strtoul (numstr, &endptr, 0);
+	if (    ('\0' == *numstr)
+	     || ('\0' != *endptr)
+	     || (ERANGE == errno)
+	   ) {
+		return 0;
+	}
+
+	*result = val;
+	return 1;
+}
+

lib/groupio.c

@@ -1,40 +1,18 @@
 /*
- * Copyright (c) 1990 - 1994, Julianne Frances Haugh
- * Copyright (c) 1996 - 2000, Marek Michałkiewicz
- * Copyright (c) 2001       , Michał Moskal
- * Copyright (c) 2005       , Tomasz Kłoczko
- * Copyright (c) 2007 - 2008, Nicolas François
- * All rights reserved.
+ * SPDX-FileCopyrightText: 1990 - 1994, Julianne Frances Haugh
+ * SPDX-FileCopyrightText: 1996 - 2000, Marek Michałkiewicz
+ * SPDX-FileCopyrightText: 2001       , Michał Moskal
+ * SPDX-FileCopyrightText: 2005       , Tomasz Kłoczko
+ * SPDX-FileCopyrightText: 2007 - 2010, Nicolas François
  *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- * 1. Redistributions of source code must retain the above copyright
- *    notice, this list of conditions and the following disclaimer.
- * 2. Redistributions in binary form must reproduce the above copyright
- *    notice, this list of conditions and the following disclaimer in the
- *    documentation and/or other materials provided with the distribution.
- * 3. The name of the copyright holders or contributors may not be used to
- *    endorse or promote products derived from this software without
- *    specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
- * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
- * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
- * PARTICULAR PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE COPYRIGHT
- * HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
- * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
- * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
- * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
- * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
- * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
- * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ * SPDX-License-Identifier: BSD-3-Clause
  */
 
 #include <config.h>
 
 #ident "$Id$"
 
+#include <assert.h>
 #include <stdio.h>
 
 #include "prototypes.h"
@@ -43,29 +21,24 @@
 #include "getdef.h"
 #include "groupio.h"
 
-static struct commonio_entry *merge_group_entries (struct commonio_entry *gr1,
-                                                   struct commonio_entry *gr2);
+static /*@null@*/struct commonio_entry *merge_group_entries (
+	/*@null@*/ /*@returned@*/struct commonio_entry *gr1,
+	/*@null@*/struct commonio_entry *gr2);
 static int split_groups (unsigned int max_members);
 static int group_open_hook (void);
 
-static void *group_dup (const void *ent)
+static /*@null@*/ /*@only@*/void *group_dup (const void *ent)
 {
 	const struct group *gr = ent;
 
 	return __gr_dup (gr);
 }
 
-static void group_free (void *ent)
+static void group_free (/*@out@*/ /*@only@*/void *ent)
 {
 	struct group *gr = ent;
 
-	free (gr->gr_name);
-	free (gr->gr_passwd);
-	while (*(gr->gr_mem)) {
-		free (*(gr->gr_mem));
-		gr->gr_mem++;
-	}
-	free (gr);
+	gr_free (gr);
 }
 
 static const char *group_getname (const void *ent)
@@ -84,6 +57,23 @@ static int group_put (const void *ent, FILE * file)
 {
 	const struct group *gr = ent;
 
+	if (   (NULL == gr)
+	    || (valid_field (gr->gr_name, ":\n") == -1)
+	    || (valid_field (gr->gr_passwd, ":\n") == -1)
+	    || (gr->gr_gid == (gid_t)-1)) {
+		return -1;
+	}
+
+	/* FIXME: fail also if gr->gr_mem == NULL ?*/
+	if (NULL != gr->gr_mem) {
+		size_t i;
+		for (i = 0; NULL != gr->gr_mem[i]; i++) {
+			if (valid_field (gr->gr_mem[i], ",:\n") == -1) {
+				return -1;
+			}
+		}
+	}
+
 	return (putgrent (gr, file) == -1) ? -1 : 0;
 }
 
@@ -91,8 +81,9 @@ static int group_close_hook (void)
 {
 	unsigned int max_members = getdef_unum("MAX_MEMBERS_PER_GROUP", 0);
 
-	if (0 == max_members)
+	if (0 == max_members) {
 		return 1;
+	}
 
 	return split_groups (max_members);
 }
@@ -109,27 +100,36 @@ static struct commonio_ops group_ops = {
 	group_close_hook
 };
 
-static struct commonio_db group_db = {
+static /*@owned@*/struct commonio_db group_db = {
 	GROUP_FILE,		/* filename */
 	&group_ops,		/* ops */
 	NULL,			/* fp */
 #ifdef WITH_SELINUX
 	NULL,			/* scontext */
 #endif
+	0644,                   /* st_mode */
+	0,                      /* st_uid */
+	0,                      /* st_gid */
 	NULL,			/* head */
 	NULL,			/* tail */
 	NULL,			/* cursor */
-	0,			/* changed */
-	0,			/* isopen */
-	0,			/* locked */
-	0			/* readonly */
+	false,			/* changed */
+	false,			/* isopen */
+	false,			/* locked */
+	false,			/* readonly */
+	false			/* setname */
 };
 
-int gr_name (const char *filename)
+int gr_setdbname (const char *filename)
 {
 	return commonio_setname (&group_db, filename);
 }
 
+/*@observer@*/const char *gr_dbname (void)
+{
+	return group_db.filename;
+}
+
 int gr_lock (void)
 {
 	return commonio_lock (&group_db);
@@ -140,12 +140,12 @@ int gr_open (int mode)
 	return commonio_open (&group_db, mode);
 }
 
-const struct group *gr_locate (const char *name)
+/*@observer@*/ /*@null@*/const struct group *gr_locate (const char *name)
 {
 	return commonio_locate (&group_db, name);
 }
 
-const struct group *gr_locate_gid (gid_t gid)
+/*@observer@*/ /*@null@*/const struct group *gr_locate_gid (gid_t gid)
 {
 	const struct group *grp;
 
@@ -172,7 +172,7 @@ int gr_rewind (void)
 	return commonio_rewind (&group_db);
 }
 
-const struct group *gr_next (void)
+/*@observer@*/ /*@null@*/const struct group *gr_next (void)
 {
 	return commonio_next (&group_db);
 }
@@ -189,15 +189,15 @@ int gr_unlock (void)
 
 void __gr_set_changed (void)
 {
-	group_db.changed = 1;
+	group_db.changed = true;
 }
 
-struct commonio_entry *__gr_get_head (void)
+/*@dependent@*/ /*@null@*/struct commonio_entry *__gr_get_head (void)
 {
 	return group_db.head;
 }
 
-struct commonio_db *__gr_get_db (void)
+/*@observer@*/const struct commonio_db *__gr_get_db (void)
 {
 	return &group_db;
 }
@@ -211,20 +211,23 @@ static int gr_cmp (const void *p1, const void *p2)
 {
 	gid_t u1, u2;
 
-	if ((*(struct commonio_entry **) p1)->eptr == NULL)
+	if ((*(struct commonio_entry **) p1)->eptr == NULL) {
 		return 1;
-	if ((*(struct commonio_entry **) p2)->eptr == NULL)
+	}
+	if ((*(struct commonio_entry **) p2)->eptr == NULL) {
 		return -1;
+	}
 
 	u1 = ((struct group *) (*(struct commonio_entry **) p1)->eptr)->gr_gid;
 	u2 = ((struct group *) (*(struct commonio_entry **) p2)->eptr)->gr_gid;
 
-	if (u1 < u2)
+	if (u1 < u2) {
 		return -1;
-	else if (u1 > u2)
+	} else if (u1 > u2) {
 		return 1;
-	else
+	} else {
 		return 0;
+	}
 }
 
 /* Sort entries by GID */
@@ -238,11 +241,12 @@ static int group_open_hook (void)
 	unsigned int max_members = getdef_unum("MAX_MEMBERS_PER_GROUP", 0);
 	struct commonio_entry *gr1, *gr2;
 
-	if (0 == max_members)
+	if (0 == max_members) {
 		return 1;
+	}
 
-	for (gr1 = group_db.head; gr1; gr1 = gr1->next) {
-		for (gr2 = gr1->next; gr2; gr2 = gr2->next) {
+	for (gr1 = group_db.head; NULL != gr1; gr1 = gr1->next) {
+		for (gr2 = gr1->next; NULL != gr2; gr2 = gr2->next) {
 			struct group *g1 = (struct group *)gr1->eptr;
 			struct group *g2 = (struct group *)gr2->eptr;
 			if (NULL != g1 &&
@@ -257,11 +261,15 @@ static int group_open_hook (void)
 				if (NULL == gr1)
 					return 0;
 				/* Unlink gr2 */
-				if (NULL != gr2->next)
+				if (NULL != gr2->next) {
 					gr2->next->prev = gr2->prev;
+				}
+				/* gr2 does not start with head */
+				assert (NULL != gr2->prev);
 				gr2->prev->next = gr2->next;
 			}
 		}
+		assert (NULL != gr1);
 	}
 
 	return 1;
@@ -279,15 +287,16 @@ static int group_open_hook (void)
  * the modified first entry on success, or NULL on failure (with errno
  * set).
  */
-static struct commonio_entry *merge_group_entries (struct commonio_entry *gr1,
-                                                   struct commonio_entry *gr2)
+static /*@null@*/struct commonio_entry *merge_group_entries (
+	/*@null@*/ /*@returned@*/struct commonio_entry *gr1,
+	/*@null@*/struct commonio_entry *gr2)
 {
 	struct group *gptr1;
 	struct group *gptr2;
 	char **new_members;
-	int members = 0;
+	size_t members = 0;
 	char *new_line;
-	int new_line_len, i;
+	size_t new_line_len, i;
 	if (NULL == gr2 || NULL == gr1) {
 		errno = EINVAL;
 		return NULL;
@@ -302,13 +311,12 @@ static struct commonio_entry *merge_group_entries (struct commonio_entry *gr1,
 
 	/* Concatenate the 2 lines */
 	new_line_len = strlen (gr1->line) + strlen (gr2->line) +1;
-	new_line = (char *)malloc ((new_line_len + 1) * sizeof(char*));
+	new_line = (char *)malloc (new_line_len + 1);
 	if (NULL == new_line) {
 		errno = ENOMEM;
 		return NULL;
 	}
-	snprintf(new_line, new_line_len, "%s\n%s", gr1->line, gr2->line);
-	new_line[new_line_len] = '\0';
+	snprintf(new_line, new_line_len + 1, "%s\n%s", gr1->line, gr2->line);
 
 	/* Concatenate the 2 list of members */
 	for (i=0; NULL != gptr1->gr_mem[i]; i++);
@@ -316,30 +324,38 @@ static struct commonio_entry *merge_group_entries (struct commonio_entry *gr1,
 	for (i=0; NULL != gptr2->gr_mem[i]; i++) {
 		char **pmember = gptr1->gr_mem;
 		while (NULL != *pmember) {
-			if (0 == strcmp(*pmember, gptr2->gr_mem[i]))
+			if (0 == strcmp(*pmember, gptr2->gr_mem[i])) {
 				break;
+			}
 			pmember++;
 		}
-		if (NULL == *pmember)
+		if (NULL == *pmember) {
 			members++;
+		}
 	}
-	new_members = (char **)malloc ( (members+1) * sizeof(char*) );
+	new_members = (char **)calloc ( (members+1), sizeof(char*) );
 	if (NULL == new_members) {
+		free (new_line);
 		errno = ENOMEM;
 		return NULL;
 	}
-	for (i=0; NULL != gptr1->gr_mem[i]; i++)
+	for (i=0; NULL != gptr1->gr_mem[i]; i++) {
 		new_members[i] = gptr1->gr_mem[i];
+	}
+	/* NULL termination enforced by above calloc */
+
 	members = i;
 	for (i=0; NULL != gptr2->gr_mem[i]; i++) {
 		char **pmember = new_members;
 		while (NULL != *pmember) {
-			if (0 == strcmp(*pmember, gptr2->gr_mem[i]))
+			if (0 == strcmp(*pmember, gptr2->gr_mem[i])) {
 				break;
+			}
 			pmember++;
 		}
 		if (NULL == *pmember) {
-			new_members[members++] = gptr2->gr_mem[i];
+			new_members[members] = gptr2->gr_mem[i];
+			members++;
 			new_members[members] = NULL;
 		}
 	}
@@ -360,20 +376,24 @@ static int split_groups (unsigned int max_members)
 {
 	struct commonio_entry *gr;
 
-	for (gr = group_db.head; gr; gr = gr->next) {
+	for (gr = group_db.head; NULL != gr; gr = gr->next) {
 		struct group *gptr = (struct group *)gr->eptr;
 		struct commonio_entry *new;
 		struct group *new_gptr;
 		unsigned int members = 0;
+		unsigned int i;
 
 		/* Check if this group must be split */
-		if (!gr->changed)
+		if (!gr->changed) {
 			continue;
-		if (NULL == gptr)
+		}
+		if (NULL == gptr) {
 			continue;
+		}
 		for (members = 0; NULL != gptr->gr_mem[members]; members++);
-		if (members <= max_members)
+		if (members <= max_members) {
 			continue;
+		}
 
 		new = (struct commonio_entry *) malloc (sizeof *new);
 		if (NULL == new) {
@@ -382,17 +402,32 @@ static int split_groups (unsigned int max_members)
 		}
 		new->eptr = group_dup(gr->eptr);
 		if (NULL == new->eptr) {
+			free (new);
 			errno = ENOMEM;
 			return 0;
 		}
 		new_gptr = (struct group *)new->eptr;
 		new->line = NULL;
-		new->changed = 1;
+		new->changed = true;
 
 		/* Enforce the maximum number of members on gptr */
-		gptr->gr_mem[max_members] = NULL;
+		for (i = max_members; NULL != gptr->gr_mem[i]; i++) {
+			free (gptr->gr_mem[i]);
+			gptr->gr_mem[i] = NULL;
+		}
+		/* Shift all the members */
 		/* The number of members in new_gptr will be check later */
-		new_gptr->gr_mem = &new_gptr->gr_mem[max_members];
+		for (i = 0; NULL != new_gptr->gr_mem[i + max_members]; i++) {
+			if (NULL != new_gptr->gr_mem[i]) {
+				free (new_gptr->gr_mem[i]);
+			}
+			new_gptr->gr_mem[i] = new_gptr->gr_mem[i + max_members];
+			new_gptr->gr_mem[i + max_members] = NULL;
+		}
+		for (; NULL != new_gptr->gr_mem[i]; i++) {
+			free (new_gptr->gr_mem[i]);
+			new_gptr->gr_mem[i] = NULL;
+		}
 
 		/* insert the new entry in the list */
 		new->prev = gr;

lib/groupio.h

@@ -1,47 +1,32 @@
 /*
- * Copyright (c) 1990 - 1994, Julianne Frances Haugh
- * Copyright (c) 1996 - 2000, Marek Michałkiewicz
- * Copyright (c) 2001       , Michał Moskal
- * Copyright (c) 2005       , Tomasz Kłoczko
- * Copyright (c) 2008       , Nicolas François
- * All rights reserved.
+ * SPDX-FileCopyrightText: 1990 - 1994, Julianne Frances Haugh
+ * SPDX-FileCopyrightText: 1996 - 2000, Marek Michałkiewicz
+ * SPDX-FileCopyrightText: 2001       , Michał Moskal
+ * SPDX-FileCopyrightText: 2005       , Tomasz Kłoczko
+ * SPDX-FileCopyrightText: 2008       , Nicolas François
  *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- * 1. Redistributions of source code must retain the above copyright
- *    notice, this list of conditions and the following disclaimer.
- * 2. Redistributions in binary form must reproduce the above copyright
- *    notice, this list of conditions and the following disclaimer in the
- *    documentation and/or other materials provided with the distribution.
- * 3. The name of the copyright holders or contributors may not be used to
- *    endorse or promote products derived from this software without
- *    specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
- * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
- * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
- * PARTICULAR PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE COPYRIGHT
- * HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
- * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
- * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
- * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
- * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
- * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
- * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ * SPDX-License-Identifier: BSD-3-Clause
  */
 
+/* $Id$ */
+#ifndef _GROUPIO_H
+#define _GROUPIO_H
+
+#include <sys/types.h>
 #include <grp.h>
+
 extern int gr_close (void);
-extern const struct group *gr_locate (const char *);
-extern const struct group *gr_locate_gid (gid_t gid);
+extern /*@observer@*/ /*@null@*/const struct group *gr_locate (const char *name);
+extern /*@observer@*/ /*@null@*/const struct group *gr_locate_gid (gid_t gid);
 extern int gr_lock (void);
-extern int gr_name (const char *);
-extern const struct group *gr_next (void);
-extern int gr_open (int);
-extern int gr_remove (const char *);
+extern int gr_setdbname (const char *filename);
+extern /*@observer@*/const char *gr_dbname (void);
+extern /*@observer@*/ /*@null@*/const struct group *gr_next (void);
+extern int gr_open (int mode);
+extern int gr_remove (const char *name);
 extern int gr_rewind (void);
 extern int gr_unlock (void);
-extern int gr_update (const struct group *);
+extern int gr_update (const struct group *gr);
 extern int gr_sort (void);
 
+#endif

lib/groupmem.c

@@ -1,34 +1,11 @@
 /*
- * Copyright (c) 1990 - 1994, Julianne Frances Haugh
- * Copyright (c) 1996 - 2000, Marek Michałkiewicz
- * Copyright (c) 2001       , Michał Moskal
- * Copyright (c) 2005       , Tomasz Kłoczko
- * Copyright (c) 2007       , Nicolas François
- * All rights reserved.
+ * SPDX-FileCopyrightText: 1990 - 1994, Julianne Frances Haugh
+ * SPDX-FileCopyrightText: 1996 - 2000, Marek Michałkiewicz
+ * SPDX-FileCopyrightText: 2001       , Michał Moskal
+ * SPDX-FileCopyrightText: 2005       , Tomasz Kłoczko
+ * SPDX-FileCopyrightText: 2007 - 2013, Nicolas François
  *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- * 1. Redistributions of source code must retain the above copyright
- *    notice, this list of conditions and the following disclaimer.
- * 2. Redistributions in binary form must reproduce the above copyright
- *    notice, this list of conditions and the following disclaimer in the
- *    documentation and/or other materials provided with the distribution.
- * 3. The name of the copyright holders or contributors may not be used to
- *    endorse or promote products derived from this software without
- *    specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
- * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
- * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
- * PARTICULAR PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE COPYRIGHT
- * HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
- * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
- * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
- * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
- * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
- * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
- * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ * SPDX-License-Identifier: BSD-3-Clause
  */
 
 #include <config.h>
@@ -39,29 +16,103 @@
 #include "defines.h"
 #include "groupio.h"
 
-struct group *__gr_dup (const struct group *grent)
+/*@null@*/ /*@only@*/struct group *__gr_dup (const struct group *grent)
 {
 	struct group *gr;
 	int i;
 
-	if (!(gr = (struct group *) malloc (sizeof *gr)))
+	gr = (struct group *) malloc (sizeof *gr);
+	if (NULL == gr) {
 		return NULL;
-	*gr = *grent;
-	if (!(gr->gr_name = strdup (grent->gr_name)))
+	}
+	/* The libc might define other fields. They won't be copied. */
+	memset (gr, 0, sizeof *gr);
+	gr->gr_gid = grent->gr_gid;
+	/*@-mustfreeonly@*/
+	gr->gr_name = strdup (grent->gr_name);
+	/*@=mustfreeonly@*/
+	if (NULL == gr->gr_name) {
+		gr_free(gr);
 		return NULL;
-	if (!(gr->gr_passwd = strdup (grent->gr_passwd)))
+	}
+	/*@-mustfreeonly@*/
+	gr->gr_passwd = strdup (grent->gr_passwd);
+	/*@=mustfreeonly@*/
+	if (NULL == gr->gr_passwd) {
+		gr_free(gr);
 		return NULL;
+	}
 
 	for (i = 0; grent->gr_mem[i]; i++);
+
+	/*@-mustfreeonly@*/
 	gr->gr_mem = (char **) malloc ((i + 1) * sizeof (char *));
-	if (!gr->gr_mem)
+	/*@=mustfreeonly@*/
+	if (NULL == gr->gr_mem) {
+		gr_free(gr);
 		return NULL;
+	}
 	for (i = 0; grent->gr_mem[i]; i++) {
 		gr->gr_mem[i] = strdup (grent->gr_mem[i]);
-		if (!gr->gr_mem[i])
+		if (NULL == gr->gr_mem[i]) {
+			gr_free(gr);
 			return NULL;
+		}
 	}
 	gr->gr_mem[i] = NULL;
+
 	return gr;
 }
 
+void gr_free_members (struct group *grent)
+{
+	if (NULL != grent->gr_mem) {
+		size_t i;
+		for (i = 0; NULL != grent->gr_mem[i]; i++) {
+			free (grent->gr_mem[i]);
+		}
+		free (grent->gr_mem);
+		grent->gr_mem = NULL;
+	}
+}
+
+void gr_free (/*@out@*/ /*@only@*/struct group *grent)
+{
+	free (grent->gr_name);
+	if (NULL != grent->gr_passwd) {
+		memzero (grent->gr_passwd, strlen (grent->gr_passwd));
+		free (grent->gr_passwd);
+	}
+	gr_free_members(grent);
+	free (grent);
+}
+
+bool gr_append_member(struct group *grp, char *member)
+{
+	int i;
+
+	if (NULL == grp->gr_mem || grp->gr_mem[0] == NULL) {
+		grp->gr_mem = (char **)malloc(2 * sizeof(char *));
+		if (!grp->gr_mem) {
+			return false;
+		}
+		grp->gr_mem[0] = strdup(member);
+		if (!grp->gr_mem[0]) {
+			return false;
+		}
+		grp->gr_mem[1] = NULL;
+		return true;
+	}
+
+	for (i = 0; grp->gr_mem[i]; i++) ;
+	grp->gr_mem = realloc(grp->gr_mem, (i + 2) * sizeof(char *));
+	if (NULL == grp->gr_mem) {
+		return false;
+	}
+	grp->gr_mem[i] = strdup(member);
+	if (NULL == grp->gr_mem[i]) {
+		return false;
+	}
+	grp->gr_mem[i + 1] = NULL;
+	return true;
+}

lib/gshadow.c

@@ -1,33 +1,10 @@
 /*
- * Copyright (c) 1990 - 1994, Julianne Frances Haugh
- * Copyright (c) 1996 - 1998, Marek Michałkiewicz
- * Copyright (c) 2005       , Tomasz Kłoczko
- * Copyright (c) 2008       , Nicolas François
- * All rights reserved.
+ * SPDX-FileCopyrightText: 1990 - 1994, Julianne Frances Haugh
+ * SPDX-FileCopyrightText: 1996 - 1998, Marek Michałkiewicz
+ * SPDX-FileCopyrightText: 2005       , Tomasz Kłoczko
+ * SPDX-FileCopyrightText: 2008 - 2009, Nicolas François
  *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- * 1. Redistributions of source code must retain the above copyright
- *    notice, this list of conditions and the following disclaimer.
- * 2. Redistributions in binary form must reproduce the above copyright
- *    notice, this list of conditions and the following disclaimer in the
- *    documentation and/or other materials provided with the distribution.
- * 3. The name of the copyright holders or contributors may not be used to
- *    endorse or promote products derived from this software without
- *    specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
- * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
- * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
- * PARTICULAR PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE COPYRIGHT
- * HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
- * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
- * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
- * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
- * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
- * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
- * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ * SPDX-License-Identifier: BSD-3-Clause
  */
 
 #include <config.h>
@@ -40,21 +17,20 @@
 #include <stdio.h>
 #include "prototypes.h"
 #include "defines.h"
-static FILE *shadow;
-static char sgrbuf[BUFSIZ * 4];
-static char **members = NULL;
+static /*@null@*/FILE *shadow;
+static /*@null@*//*@only@*/char **members = NULL;
 static size_t nmembers = 0;
-static char **admins = NULL;
+static /*@null@*//*@only@*/char **admins = NULL;
 static size_t nadmins = 0;
 static struct sgrp sgroup;
 
 #define	FIELDS	4
 
 #ifdef	USE_NIS
-static int nis_used;
-static int nis_ignore;
+static bool nis_used;
+static bool nis_ignore;
 static enum { native, start, middle, native2 } nis_state;
-static int nis_bound;
+static bool nis_bound;
 static char *nis_domain;
 static char *nis_key;
 static int nis_keylen;
@@ -65,19 +41,6 @@ static int nis_vallen;
 #endif
 
 #ifdef	USE_NIS
-
-/*
- * __setsgNIS - turn on or off NIS searches
- */
-
-void __setsgNIS (int flag)
-{
-	nis_ignore = !flag;
-
-	if (nis_ignore)
-		nis_used = 0;
-}
-
 /*
  * bind_nis - bind to NIS server
  */
@@ -87,29 +50,35 @@ static int bind_nis (void)
 	if (yp_get_default_domain (&nis_domain))
 		return -1;
 
-	nis_bound = 1;
+	nis_bound = true;
 	return 0;
 }
 #endif
 
-static char **build_list (char *s, char **list[], size_t * nlist)
+static /*@null@*/char **build_list (char *s, char **list[], size_t * nlist)
 {
 	char **ptr = *list;
 	size_t nelem = *nlist, size;
 
 	while (s != NULL && *s != '\0') {
 		size = (nelem + 1) * sizeof (ptr);
-		if ((ptr = realloc (*list, size)) != NULL) {
-			ptr[nelem++] = s;
+		ptr = realloc (*list, size);
+		if (NULL != ptr) {
+			ptr[nelem] = s;
+			nelem++;
 			*list = ptr;
 			*nlist = nelem;
-			if ((s = strchr (s, ',')))
-				*s++ = '\0';
+			s = strchr (s, ',');
+			if (NULL != s) {
+				*s = '\0';
+				s++;
+			}
 		}
 	}
 	size = (nelem + 1) * sizeof (ptr);
-	if ((ptr = realloc (*list, size)) != NULL) {
-		ptr[nelem] = '\0';
+	ptr = realloc (*list, size);
+	if (NULL != ptr) {
+		ptr[nelem] = NULL;
 		*list = ptr;
 	}
 	return ptr;
@@ -120,41 +89,60 @@ void setsgent (void)
 #ifdef	USE_NIS
 	nis_state = native;
 #endif
-	if (shadow)
+	if (NULL != shadow) {
 		rewind (shadow);
-	else
+	} else {
 		shadow = fopen (SGROUP_FILE, "r");
+	}
 }
 
 void endsgent (void)
 {
-	if (shadow)
+	if (NULL != shadow) {
 		(void) fclose (shadow);
+	}
 
 	shadow = (FILE *) 0;
 }
 
-struct sgrp *sgetsgent (const char *string)
+/*@observer@*//*@null@*/struct sgrp *sgetsgent (const char *string)
 {
+	static char *sgrbuf = NULL;
+	static size_t sgrbuflen = 0;
+
 	char *fields[FIELDS];
 	char *cp;
 	int i;
+	size_t len = strlen (string) + 1;
 
-	strncpy (sgrbuf, string, (int) sizeof sgrbuf - 1);
-	sgrbuf[sizeof sgrbuf - 1] = '\0';
+	if (len > sgrbuflen) {
+		char *buf = (char *) realloc (sgrbuf, sizeof (char) * len);
+		if (NULL == buf) {
+			return NULL;
+		}
+		sgrbuf = buf;
+		sgrbuflen = len;
+	}
 
-	if ((cp = strrchr (sgrbuf, '\n')))
+	strncpy (sgrbuf, string, len);
+	sgrbuf[len-1] = '\0';
+
+	cp = strrchr (sgrbuf, '\n');
+	if (NULL != cp) {
 		*cp = '\0';
+	}
 
 	/*
 	 * There should be exactly 4 colon separated fields.  Find
 	 * all 4 of them and save the starting addresses in fields[].
 	 */
 
-	for (cp = sgrbuf, i = 0; i < FIELDS && cp; i++) {
+	for (cp = sgrbuf, i = 0; (i < FIELDS) && (NULL != cp); i++) {
 		fields[i] = cp;
-		if ((cp = strchr (cp, ':')))
+		cp = strchr (cp, ':');
+		if (NULL != cp) {
 			*cp++ = '\0';
+		}
 	}
 
 	/*
@@ -162,24 +150,26 @@ struct sgrp *sgetsgent (const char *string)
 	 * the line is invalid.
 	 */
 
-	if (cp || i != FIELDS)
+	if ((NULL != cp) || (i != FIELDS)) {
 #ifdef	USE_NIS
-		if (!IS_NISCHAR (fields[0][0]))
+		if (!IS_NISCHAR (fields[0][0])) {
 			return 0;
-		else
-			nis_used = 1;
+		} else {
+			nis_used = true;
+		}
 #else
 		return 0;
 #endif
+	}
 
 	sgroup.sg_name = fields[0];
 	sgroup.sg_passwd = fields[1];
-	if (nadmins) {
+	if (0 != nadmins) {
 		nadmins = 0;
 		free (admins);
 		admins = NULL;
 	}
-	if (nmembers) {
+	if (0 != nmembers) {
 		nmembers = 0;
 		free (members);
 		members = NULL;
@@ -197,44 +187,76 @@ struct sgrp *sgetsgent (const char *string)
  * converts it to a (struct sgrp).  NULL is returned on EOF.
  */
 
-struct sgrp *fgetsgent (FILE * fp)
+/*@observer@*//*@null@*/struct sgrp *fgetsgent (/*@null@*/FILE * fp)
 {
-	char buf[sizeof sgrbuf];
+	static size_t buflen = 0;
+	static char *buf = NULL;
+
 	char *cp;
 
-	if (!fp)
-		return (0);
+	if (0 == buflen) {
+		buf = (char *) malloc (BUFSIZ);
+		if (NULL == buf) {
+			return NULL;
+		}
+		buflen = BUFSIZ;
+	}
+
+	if (NULL == fp) {
+		return NULL;
+	}
 
 #ifdef	USE_NIS
-	while (fgetsx (buf, sizeof buf, fp) != (char *) 0)
+	while (fgetsx (buf, (int) buflen, fp) == buf)
 #else
-	if (fgetsx (buf, sizeof buf, fp) != (char *) 0)
+	if (fgetsx (buf, (int) buflen, fp) == buf)
 #endif
 	{
-		if ((cp = strchr (buf, '\n')))
+		while (   ((cp = strrchr (buf, '\n')) == NULL)
+		       && (feof (fp) == 0)) {
+			size_t len;
+
+			cp = (char *) realloc (buf, buflen*2);
+			if (NULL == cp) {
+				return NULL;
+			}
+			buf = cp;
+			buflen *= 2;
+
+			len = strlen (buf);
+			if (fgetsx (&buf[len],
+			            (int) (buflen - len),
+			            fp) != &buf[len]) {
+				return NULL;
+			}
+		}
+		cp = strrchr (buf, '\n');
+		if (NULL != cp) {
 			*cp = '\0';
+		}
 #ifdef	USE_NIS
-		if (nis_ignore && IS_NISCHAR (buf[0]))
+		if (nis_ignore && IS_NISCHAR (buf[0])) {
 			continue;
+		}
 #endif
 		return (sgetsgent (buf));
 	}
-	return 0;
+	return NULL;
 }
 
 /*
  * getsgent - get a single shadow group entry
  */
 
-struct sgrp *getsgent (void)
+/*@observer@*//*@null@*/struct sgrp *getsgent (void)
 {
 #ifdef	USE_NIS
-	int nis_1_group = 0;
+	bool nis_1_group = false;
 	struct sgrp *val;
-	char buf[BUFSIZ];
 #endif
-	if (!shadow)
+	if (NULL == shadow) {
 		setsgent ();
+	}
 
 #ifdef	USE_NIS
       again:
@@ -249,8 +271,10 @@ struct sgrp *getsgent (void)
 		 * NULL right away if there is none.
 		 */
 
-		if (!(val = fgetsgent (shadow)))
+		val = fgetsgent (shadow);
+		if (NULL == val) {
 			return 0;
+		}
 
 		/*
 		 * If this entry began with a NIS escape character, we have
@@ -259,10 +283,11 @@ struct sgrp *getsgent (void)
 		 */
 
 		if (IS_NISCHAR (val->sg_name[0])) {
-			if (val->sg_name[1])
-				nis_1_group = 1;
-			else
+			if ('\0' != val->sg_name[1]) {
+				nis_1_group = true;
+			} else {
 				nis_state = start;
+			}
 		}
 
 		/*
@@ -270,16 +295,18 @@ struct sgrp *getsgent (void)
 		 * use a NIS map, it must be a regular local group.
 		 */
 
-		if (nis_1_group == 0 && nis_state != start)
+		if (!nis_1_group && (nis_state != start)) {
 			return val;
+		}
 
 		/*
 		 * If this is an escape to use an NIS map, switch over to
 		 * that bunch of code.
 		 */
 
-		if (nis_state == start)
+		if (nis_state == start) {
 			goto again;
+		}
 
 		/*
 		 * NEEDSWORK.  Here we substitute pieces-parts of this entry.
@@ -287,7 +314,7 @@ struct sgrp *getsgent (void)
 
 		return 0;
 	} else {
-		if (nis_bound == 0) {
+		if (!nis_bound) {
 			if (bind_nis ()) {
 				nis_state = native2;
 				goto again;
@@ -319,12 +346,11 @@ struct sgrp *getsgent (void)
  * getsgnam - get a shadow group entry by name
  */
 
-struct sgrp *getsgnam (const char *name)
+/*@observer@*//*@null@*/struct sgrp *getsgnam (const char *name)
 {
 	struct sgrp *sgrp;
 
 #ifdef	USE_NIS
-	char buf[BUFSIZ];
 	static char save_name[16];
 	int nis_disabled = 0;
 #endif
@@ -339,8 +365,9 @@ struct sgrp *getsgnam (const char *name)
 		 * Search the gshadow.byname map for this group.
 		 */
 
-		if (!nis_bound)
+		if (!nis_bound) {
 			bind_nis ();
+		}
 
 		if (nis_bound) {
 			char *cp;
@@ -348,11 +375,14 @@ struct sgrp *getsgnam (const char *name)
 			if (yp_match (nis_domain, "gshadow.byname", name,
 				      strlen (name), &nis_val,
 				      &nis_vallen) == 0) {
-				if (cp = strchr (nis_val, '\n'))
+				cp = strchr (nis_val, '\n');
+				if (NULL != cp) {
 					*cp = '\0';
+				}
 
 				nis_state = middle;
-				if (sgrp = sgetsgent (nis_val)) {
+				sgrp = sgetsgent (nis_val);
+				if (NULL != sgrp) {
 					strcpy (save_name, sgrp->sg_name);
 					nis_key = save_name;
 					nis_keylen = strlen (save_name);
@@ -365,20 +395,19 @@ struct sgrp *getsgnam (const char *name)
 #endif
 #ifdef	USE_NIS
 	if (nis_used) {
-		nis_ignore++;
-		nis_disabled++;
+		nis_ignore = true;
+		nis_disabled = true;
 	}
 #endif
 	while ((sgrp = getsgent ()) != (struct sgrp *) 0) {
-		if (strcmp (name, sgrp->sg_name) == 0)
+		if (strcmp (name, sgrp->sg_name) == 0) {
 			break;
+		}
 	}
 #ifdef	USE_NIS
-	nis_ignore--;
+	nis_ignore = false;
 #endif
-	if (sgrp)
-		return sgrp;
-	return (0);
+	return sgrp;
 }
 
 /*
@@ -395,19 +424,23 @@ int putsgent (const struct sgrp *sgrp, FILE * fp)
 	int i;
 	size_t size;
 
-	if (!fp || !sgrp)
+	if ((NULL == fp) || (NULL == sgrp)) {
 		return -1;
+	}
 
 	/* calculate the required buffer size */
 	size = strlen (sgrp->sg_name) + strlen (sgrp->sg_passwd) + 10;
-	for (i = 0; sgrp->sg_adm && sgrp->sg_adm[i]; i++)
+	for (i = 0; (NULL != sgrp->sg_adm) && (NULL != sgrp->sg_adm[i]); i++) {
 		size += strlen (sgrp->sg_adm[i]) + 1;
-	for (i = 0; sgrp->sg_mem && sgrp->sg_mem[i]; i++)
+	}
+	for (i = 0; (NULL != sgrp->sg_mem) && (NULL != sgrp->sg_mem[i]); i++) {
 		size += strlen (sgrp->sg_mem[i]) + 1;
+	}
 
 	buf = malloc (size);
-	if (!buf)
+	if (NULL == buf) {
 		return -1;
+	}
 	cp = buf;
 
 	/*
@@ -427,27 +460,32 @@ int putsgent (const struct sgrp *sgrp, FILE * fp)
 	 * with a ",".
 	 */
 
-	for (i = 0; sgrp->sg_adm[i]; i++) {
-		if (i > 0)
+	for (i = 0; NULL != sgrp->sg_adm[i]; i++) {
+		if (i > 0) {
 			*cp++ = ',';
+		}
 
 		strcpy (cp, sgrp->sg_adm[i]);
 		cp += strlen (cp);
 	}
-	*cp++ = ':';
+	*cp = ':';
+	cp++;
 
 	/*
 	 * Now do likewise with the group members.
 	 */
 
-	for (i = 0; sgrp->sg_mem[i]; i++) {
-		if (i > 0)
-			*cp++ = ',';
+	for (i = 0; NULL != sgrp->sg_mem[i]; i++) {
+		if (i > 0) {
+			*cp = ',';
+			cp++;
+		}
 
 		strcpy (cp, sgrp->sg_mem[i]);
 		cp += strlen (cp);
 	}
-	*cp++ = '\n';
+	*cp = '\n';
+	cp++;
 	*cp = '\0';
 
 	/*

lib/gshadow_.h

@@ -1,32 +1,9 @@
 /*
- * Copyright (c) 1988 - 1994, Julianne Frances Haugh
- * Copyright (c) 1996 - 1997, Marek Michałkiewicz
- * Copyright (c) 2003 - 2005, Tomasz Kłoczko
- * All rights reserved.
+ * SPDX-FileCopyrightText: 1988 - 1994, Julianne Frances Haugh
+ * SPDX-FileCopyrightText: 1996 - 1997, Marek Michałkiewicz
+ * SPDX-FileCopyrightText: 2003 - 2005, Tomasz Kłoczko
  *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- * 1. Redistributions of source code must retain the above copyright
- *    notice, this list of conditions and the following disclaimer.
- * 2. Redistributions in binary form must reproduce the above copyright
- *    notice, this list of conditions and the following disclaimer in the
- *    documentation and/or other materials provided with the distribution.
- * 3. The name of the copyright holders or contributors may not be used to
- *    endorse or promote products derived from this software without
- *    specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
- * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
- * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
- * PARTICULAR PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE COPYRIGHT
- * HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
- * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
- * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
- * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
- * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
- * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
- * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ * SPDX-License-Identifier: BSD-3-Clause
  */
 
 /*
@@ -43,7 +20,7 @@
 struct sgrp {
 	char *sg_name;		/* group name */
 	char *sg_passwd;	/* group password */
-	char **sg_adm;		/* group administator list */
+	char **sg_adm;		/* group administrator list */
 	char **sg_mem;		/* group membership list */
 };
 
@@ -54,18 +31,18 @@ struct sgrp {
 #include <stdio.h>		/* for FILE */
 
 #if __STDC__
-struct sgrp *getsgent (void);
-struct sgrp *getsgnam (const char *);
-struct sgrp *sgetsgent (const char *);
-struct sgrp *fgetsgent (FILE *);
+/*@observer@*//*@null@*/struct sgrp *getsgent (void);
+/*@observer@*//*@null@*/struct sgrp *getsgnam (const char *);
+/*@observer@*//*@null@*/struct sgrp *sgetsgent (const char *);
+/*@observer@*//*@null@*/struct sgrp *fgetsgent (/*@null@*/FILE *);
 void setsgent (void);
 void endsgent (void);
 int putsgent (const struct sgrp *, FILE *);
 #else
-struct sgrp *getsgent ();
-struct sgrp *getsgnam ();
-struct sgrp *sgetsgent ();
-struct sgrp *fgetsgent ();
+/*@observer@*//*@null@*/struct sgrp *getsgent ();
+/*@observer@*//*@null@*/struct sgrp *getsgnam ();
+/*@observer@*//*@null@*/struct sgrp *sgetsgent ();
+/*@observer@*//*@null@*/struct sgrp *fgetsgent ();
 void setsgent ();
 void endsgent ();
 int putsgent ();

lib/lockpw.c

@@ -1,32 +1,9 @@
 /*
- * Copyright (c) 1992       , Julianne Frances Haugh
- * Copyright (c) 1996 - 1998, Marek Michałkiewicz
- * Copyright (c) 2005       , Tomasz Kłoczko
- * All rights reserved.
+ * SPDX-FileCopyrightText: 1992       , Julianne Frances Haugh
+ * SPDX-FileCopyrightText: 1996 - 1998, Marek Michałkiewicz
+ * SPDX-FileCopyrightText: 2005       , Tomasz Kłoczko
  *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- * 1. Redistributions of source code must retain the above copyright
- *    notice, this list of conditions and the following disclaimer.
- * 2. Redistributions in binary form must reproduce the above copyright
- *    notice, this list of conditions and the following disclaimer in the
- *    documentation and/or other materials provided with the distribution.
- * 3. The name of the copyright holders or contributors may not be used to
- *    endorse or promote products derived from this software without
- *    specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
- * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
- * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
- * PARTICULAR PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE COPYRIGHT
- * HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
- * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
- * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
- * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
- * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
- * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
- * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ * SPDX-License-Identifier: BSD-3-Clause
  */
 
 #include <config.h>

lib/nscd.c

@@ -1,50 +1,58 @@
 /* Author: Peter Vrabec <pvrabec@redhat.com> */
 
-/* because of TEMP_FAILURE_RETRY */
-#define _GNU_SOURCE
+#include <config.h>
+#ifdef USE_NSCD
 
-#include <features.h>
 #include <stdio.h>
-#include <stdlib.h>
-#include <unistd.h>
-#include <spawn.h>
-#include <errno.h>
 #include <sys/wait.h>
 #include <sys/types.h>
+#include "exitcodes.h"
+#include "defines.h"
+#include "prototypes.h"
 #include "nscd.h"
+#include "shadowlog_internal.h"
+
+#define MSG_NSCD_FLUSH_CACHE_FAILED "%s: Failed to flush the nscd cache.\n"
 
 /*
  * nscd_flush_cache - flush specified service buffer in nscd cache
  */
 int nscd_flush_cache (const char *service)
 {
-	pid_t pid, termpid;
-	int err, status;
-	char *spawnedArgs[] = {"/usr/sbin/nscd", "nscd", "-i", service, NULL};
-	char *spawnedEnv[] = {NULL};
+	int status, code;
+	const char *cmd = "/usr/sbin/nscd";
+	const char *spawnedArgs[] = {"nscd", "-i", service, NULL};
+	const char *spawnedEnv[] = {NULL};
 
-	/* spawn process */
-	if( (err=posix_spawn(&pid, spawnedArgs[0], NULL, NULL,
-			     spawnedArgs, spawnedEnv)) !=0 ) 
-	{
-		fprintf(stderr, "posix_spawn() error=%d\n", err);
+	if (run_command (cmd, spawnedArgs, spawnedEnv, &status) != 0) {
+		/* run_command writes its own more detailed message. */
+		(void) fprintf (shadow_logfd, _(MSG_NSCD_FLUSH_CACHE_FAILED), shadow_progname);
 		return -1;
 	}
 
-	/* Wait for the spawned process to exit */	
-	termpid = TEMP_FAILURE_RETRY (waitpid (pid, &status, 0));
-	if (termpid == -1)
-	{
-		perror("waitpid");
+	code = WEXITSTATUS (status);
+	if (!WIFEXITED (status)) {
+		(void) fprintf (shadow_logfd,
+		                _("%s: nscd did not terminate normally (signal %d)\n"),
+		                shadow_progname, WTERMSIG (status));
 		return -1;
-	}
-	else if (termpid != pid)
-	{
-		fprintf(stderr, "waitpid returned %ld != %ld\n",
-			 (long int) termpid, (long int) pid);
+	} else if (code == E_CMD_NOTFOUND) {
+		/* nscd is not installed, or it is installed but uses an
+		   interpreter that is missing.  Probably the former. */
+		return 0;
+	} else if (code == 1) {
+		/* nscd is installed, but it isn't active. */
+		return 0;
+	} else if (code != 0) {
+		(void) fprintf (shadow_logfd, _("%s: nscd exited with status %d\n"),
+		                shadow_progname, code);
+		(void) fprintf (shadow_logfd, _(MSG_NSCD_FLUSH_CACHE_FAILED), shadow_progname);
 		return -1;
 	}
 
 	return 0;
 }
+#else				/* USE_NSCD */
+extern int errno;		/* warning: ANSI C forbids an empty source file */
+#endif				/* USE_NSCD */
 

lib/nscd.h

@@ -4,6 +4,10 @@
 /*
  * nscd_flush_cache - flush specified service buffer in nscd cache
  */
+#ifdef	USE_NSCD
 extern int nscd_flush_cache (const char *service);
+#else
+#define nscd_flush_cache(service) (0)
+#endif
 
 #endif

lib/nss.c

@@ -0,0 +1,152 @@
+#include <stdio.h>
+#include <stdlib.h>
+#include <dlfcn.h>
+#include <stdbool.h>
+#include <string.h>
+#include <strings.h>
+#include <ctype.h>
+#include <stdatomic.h>
+#include "prototypes.h"
+#include "../libsubid/subid.h"
+#include "shadowlog_internal.h"
+#include "shadowlog.h"
+
+#define NSSWITCH "/etc/nsswitch.conf"
+
+// NSS plugin handling for subids
+// If nsswitch has a line like
+//    subid: sssd
+// then sssd will be consulted for subids.  Unlike normal NSS dbs,
+// only one db is supported at a time.  That's open to debate, but
+// the subids are a pretty limited resource, and local files seem
+// bound to step on any other allocations leading to insecure
+// conditions.
+static atomic_flag nss_init_started;
+static atomic_bool nss_init_completed;
+
+static struct subid_nss_ops *subid_nss;
+
+bool nss_is_initialized() {
+	return atomic_load(&nss_init_completed);
+}
+
+static void nss_exit(void) {
+	if (nss_is_initialized() && subid_nss) {
+		dlclose(subid_nss->handle);
+		free(subid_nss);
+		subid_nss = NULL;
+	}
+}
+
+// nsswitch_path is an argument only to support testing.
+void nss_init(const char *nsswitch_path) {
+	FILE *nssfp = NULL;
+	char *line = NULL, *p, *token, *saveptr;
+	size_t len = 0;
+	FILE *shadow_logfd = log_get_logfd();
+
+	if (atomic_flag_test_and_set(&nss_init_started)) {
+		// Another thread has started nss_init, wait for it to complete
+		while (!atomic_load(&nss_init_completed))
+			usleep(100);
+		return;
+	}
+
+	if (!nsswitch_path)
+		nsswitch_path = NSSWITCH;
+
+	// read nsswitch.conf to check for a line like:
+	//   subid:	files
+	nssfp = fopen(nsswitch_path, "r");
+	if (!nssfp) {
+		fprintf(shadow_logfd, "Failed opening %s: %m\n", nsswitch_path);
+		atomic_store(&nss_init_completed, true);
+		return;
+	}
+	while ((getline(&line, &len, nssfp)) != -1) {
+		if (line[0] == '\0' || line[0] == '#')
+			continue;
+		if (strlen(line) < 8)
+			continue;
+		if (strncasecmp(line, "subid:", 6) != 0)
+			continue;
+		p = &line[6];
+		while ((*p) && isspace(*p))
+			p++;
+		if (!*p)
+			continue;
+		for (token = strtok_r(p, " \n\t", &saveptr);
+		     token;
+		     token = strtok_r(NULL, " \n\t", &saveptr)) {
+			char libname[65];
+			void *h;
+			if (strcmp(token, "files") == 0) {
+				subid_nss = NULL;
+				goto done;
+			}
+			if (strlen(token) > 50) {
+				fprintf(shadow_logfd, "Subid NSS module name too long (longer than 50 characters): %s\n", token);
+				fprintf(shadow_logfd, "Using files\n");
+				subid_nss = NULL;
+				goto done;
+			}
+			snprintf(libname, 64,  "libsubid_%s.so", token);
+			h = dlopen(libname, RTLD_LAZY);
+			if (!h) {
+				fprintf(shadow_logfd, "Error opening %s: %s\n", libname, dlerror());
+				fprintf(shadow_logfd, "Using files\n");
+				subid_nss = NULL;
+				goto done;
+			}
+			subid_nss = malloc(sizeof(*subid_nss));
+			if (!subid_nss) {
+				dlclose(h);
+				goto done;
+			}
+			subid_nss->has_range = dlsym(h, "shadow_subid_has_range");
+			if (!subid_nss->has_range) {
+				fprintf(shadow_logfd, "%s did not provide @has_range@\n", libname);
+				dlclose(h);
+				free(subid_nss);
+				subid_nss = NULL;
+				goto done;
+			}
+			subid_nss->list_owner_ranges = dlsym(h, "shadow_subid_list_owner_ranges");
+			if (!subid_nss->list_owner_ranges) {
+				fprintf(shadow_logfd, "%s did not provide @list_owner_ranges@\n", libname);
+				dlclose(h);
+				free(subid_nss);
+				subid_nss = NULL;
+				goto done;
+			}
+			subid_nss->find_subid_owners = dlsym(h, "shadow_subid_find_subid_owners");
+			if (!subid_nss->find_subid_owners) {
+				fprintf(shadow_logfd, "%s did not provide @find_subid_owners@\n", libname);
+				dlclose(h);
+				free(subid_nss);
+				subid_nss = NULL;
+				goto done;
+			}
+			subid_nss->handle = h;
+			goto done;
+		}
+		fprintf(shadow_logfd, "No usable subid NSS module found, using files\n");
+		// subid_nss has to be null here, but to ease reviews:
+		free(subid_nss);
+		subid_nss = NULL;
+		goto done;
+	}
+
+done:
+	atomic_store(&nss_init_completed, true);
+	free(line);
+	if (nssfp) {
+		atexit(nss_exit);
+		fclose(nssfp);
+	}
+}
+
+struct subid_nss_ops *get_subid_nss_handle() {
+	nss_init(NULL);
+	return subid_nss;
+}

lib/pam_defs.h

@@ -1,51 +1,35 @@
 /*
- * Copyright (c) 1999       , Marek Michałkiewicz
- * Copyright (c) 2001 - 2005, Tomasz Kłoczko
- * All rights reserved.
+ * SPDX-FileCopyrightText: 1999       , Marek Michałkiewicz
+ * SPDX-FileCopyrightText: 2001 - 2005, Tomasz Kłoczko
  *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- * 1. Redistributions of source code must retain the above copyright
- *    notice, this list of conditions and the following disclaimer.
- * 2. Redistributions in binary form must reproduce the above copyright
- *    notice, this list of conditions and the following disclaimer in the
- *    documentation and/or other materials provided with the distribution.
- * 3. The name of the copyright holders or contributors may not be used to
- *    endorse or promote products derived from this software without
- *    specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
- * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
- * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
- * PARTICULAR PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE COPYRIGHT
- * HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
- * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
- * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
- * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
- * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
- * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
- * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ * SPDX-License-Identifier: BSD-3-Clause
  */
 
+#include <config.h>
 #include <security/pam_appl.h>
-#include <security/pam_misc.h>
+#ifdef HAVE_SECURITY_PAM_MISC_H
+# include <security/pam_misc.h>
+#endif
+#ifdef HAVE_SECURITY_OPENPAM_H
+# include <security/openpam.h>
+#endif
+
 
 static struct pam_conv conv = {
-	misc_conv,
+	SHADOW_PAM_CONVERSATION,
 	NULL
 };
 
 /* compatibility with different versions of Linux-PAM */
-#ifndef PAM_ESTABLISH_CRED
+#if !HAVE_DECL_PAM_ESTABLISH_CRED
 #define PAM_ESTABLISH_CRED PAM_CRED_ESTABLISH
 #endif
-#ifndef PAM_DELETE_CRED
+#if !HAVE_DECL_PAM_DELETE_CRED
 #define PAM_DELETE_CRED PAM_CRED_DELETE
 #endif
-#ifndef PAM_NEW_AUTHTOK_REQD
+#if !HAVE_DECL_PAM_NEW_AUTHTOK_REQD
 #define PAM_NEW_AUTHTOK_REQD PAM_AUTHTOKEN_REQD
 #endif
-#ifndef PAM_DATA_SILENT
+#if !HAVE_DECL_PAM_DATA_SILENT
 #define PAM_DATA_SILENT 0
 #endif

lib/port.c

@@ -1,33 +1,10 @@
 /*
- * Copyright (c) 1989 - 1994, Julianne Frances Haugh
- * Copyright (c) 1996 - 1997, Marek Michałkiewicz
- * Copyright (c) 2005       , Tomasz Kłoczko
- * Copyright (c) 2008       , Nicolas François
- * All rights reserved.
+ * SPDX-FileCopyrightText: 1989 - 1994, Julianne Frances Haugh
+ * SPDX-FileCopyrightText: 1996 - 1997, Marek Michałkiewicz
+ * SPDX-FileCopyrightText: 2005       , Tomasz Kłoczko
+ * SPDX-FileCopyrightText: 2008       , Nicolas François
  *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- * 1. Redistributions of source code must retain the above copyright
- *    notice, this list of conditions and the following disclaimer.
- * 2. Redistributions in binary form must reproduce the above copyright
- *    notice, this list of conditions and the following disclaimer in the
- *    documentation and/or other materials provided with the distribution.
- * 3. The name of the copyright holders or contributors may not be used to
- *    endorse or promote products derived from this software without
- *    specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
- * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
- * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
- * PARTICULAR PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE COPYRIGHT
- * HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
- * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
- * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
- * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
- * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
- * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
- * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ * SPDX-License-Identifier: BSD-3-Clause
  */
 
 #include <config.h>
@@ -57,15 +34,19 @@ static int portcmp (const char *pattern, const char *port)
 {
 	const char *orig = port;
 
-	while (*pattern && *pattern == *port)
-		pattern++, port++;
+	while (('\0' != *pattern) && (*pattern == *port)) {
+		pattern++;
+		port++;
+	}
 
-	if (*pattern == 0 && *port == 0)
+	if (('\0' == *pattern) && ('\0' == *port)) {
 		return 0;
-	if (orig[0] == 'S' && orig[1] == 'U' && orig[2] == '\0')
+	}
+	if (('S' == orig[0]) && ('U' == orig[1]) && ('\0' == orig[2])) {
 		return 1;
+	}
 
-	return *pattern == '*' ? 0 : 1;
+	return (*pattern == '*') ? 0 : 1;
 }
 
 /*
@@ -77,10 +58,11 @@ static int portcmp (const char *pattern, const char *port)
 
 static void setportent (void)
 {
-	if (ports)
+	if (NULL != ports) {
 		rewind (ports);
-	else
+	} else {
 		ports = fopen (PORTS, "r");
+	}
 }
 
 /*
@@ -93,8 +75,9 @@ static void setportent (void)
 
 static void endportent (void)
 {
-	if (ports)
-		fclose (ports);
+	if (NULL != ports) {
+		(void) fclose (ports);
+	}
 
 	ports = (FILE *) 0;
 }
@@ -125,10 +108,11 @@ static struct port *getportent (void)
 	 * since we want to search from the beginning each time.
 	 */
 
-	if (!ports)
+	if (NULL == ports) {
 		setportent ();
+	}
 
-	if (!ports) {
+	if (NULL == ports) {
 		errno = saveerr;
 		return 0;
 	}
@@ -150,12 +134,13 @@ static struct port *getportent (void)
 	 * is a '\n'.  Lines which begin with '#' are all ignored.
 	 */
 
-	if (fgets (buf, sizeof buf, ports) == 0) {
+	if (fgets (buf, (int) sizeof buf, ports) == 0) {
 		errno = saveerr;
 		return 0;
 	}
-	if (buf[0] == '#')
+	if ('#' == buf[0]) {
 		goto again;
+	}
 
 	/*
 	 * Get the name of the TTY device.  It is the first colon
@@ -169,19 +154,24 @@ static struct port *getportent (void)
 	port.pt_names = ttys;
 	for (cp = buf, j = 0; j < PORT_TTY; j++) {
 		port.pt_names[j] = cp;
-		while (*cp && *cp != ':' && *cp != ',')
+		while (('\0' != *cp) && (':' != *cp) && (',' != *cp)) {
 			cp++;
+		}
 
-		if (!*cp)
+		if ('\0' == *cp) {
 			goto again;	/* line format error */
+		}
 
-		if (*cp == ':')	/* end of tty name list */
+		if (':' == *cp) {	/* end of tty name list */
 			break;
+		}
 
-		if (*cp == ',')	/* end of current tty name */
+		if (',' == *cp) {	/* end of current tty name */
 			*cp++ = '\0';
+		}
 	}
-	*cp++ = 0;
+	*cp = '\0';
+	cp++;
 	port.pt_names[j + 1] = (char *) 0;
 
 	/*
@@ -191,24 +181,29 @@ static struct port *getportent (void)
 	 * The last entry in the list is a (char *) 0 pointer.
 	 */
 
-	if (*cp != ':') {
+	if (':' != *cp) {
 		port.pt_users = users;
 		port.pt_users[0] = cp;
 
-		for (j = 1; *cp != ':'; cp++) {
-			if (*cp == ',' && j < PORT_IDS) {
-				*cp++ = 0;
-				port.pt_users[j++] = cp;
+		for (j = 1; ':' != *cp; cp++) {
+			if ((',' == *cp) && (j < PORT_IDS)) {
+				*cp = '\0';
+				cp++;
+				port.pt_users[j] = cp;
+				j++;
 			}
 		}
 		port.pt_users[j] = 0;
-	} else
+	} else {
 		port.pt_users = 0;
+	}
 
-	if (*cp != ':')
+	if (':' != *cp) {
 		goto again;
+	}
 
-	*cp++ = 0;
+	*cp = '\0';
+	cp++;
 
 	/*
 	 * Get the list of valid times.  The times field is the third
@@ -223,7 +218,7 @@ static struct port *getportent (void)
 	 * the starting time.  Days are presumed to wrap at 0000.
 	 */
 
-	if (*cp == '\0') {
+	if ('\0' == *cp) {
 		port.pt_times = 0;
 		return &port;
 	}
@@ -234,7 +229,7 @@ static struct port *getportent (void)
 	 * Get the next comma separated entry
 	 */
 
-	for (j = 0; *cp && j < PORT_TIMES; j++) {
+	for (j = 0; ('\0' != *cp) && (j < PORT_TIMES); j++) {
 
 		/*
 		 * Start off with no days of the week
@@ -248,7 +243,9 @@ static struct port *getportent (void)
 		 * week or the other two values.
 		 */
 
-		for (i = 0; cp[i] && cp[i + 1] && isalpha (cp[i]); i += 2) {
+		for (i = 0;
+		     ('\0' != cp[i]) && ('\0' != cp[i + 1]) && isalpha (cp[i]);
+		     i += 2) {
 			switch ((cp[i] << 8) | (cp[i + 1])) {
 			case ('S' << 8) | 'u':
 				port.pt_times[j].t_days |= 01;
@@ -287,8 +284,9 @@ static struct port *getportent (void)
 		 * The default is 'Al' if no days were seen.
 		 */
 
-		if (i == 0)
+		if (0 == i) {
 			port.pt_times[j].t_days = 0177;
+		}
 
 		/*
 		 * The start and end times are separated from each
@@ -296,19 +294,27 @@ static struct port *getportent (void)
 		 * representing the times of day.
 		 */
 
-		for (dtime = 0; cp[i] && isdigit (cp[i]); i++)
+		for (dtime = 0; ('\0' != cp[i]) && isdigit (cp[i]); i++) {
 			dtime = dtime * 10 + cp[i] - '0';
+		}
 
-		if (cp[i] != '-' || dtime > 2400 || dtime % 100 > 59)
+		if (('-' != cp[i]) || (dtime > 2400) || ((dtime % 100) > 59)) {
 			goto again;
+		}
 		port.pt_times[j].t_start = dtime;
 		cp = cp + i + 1;
 
-		for (dtime = i = 0; cp[i] && isdigit (cp[i]); i++)
+		for (dtime = 0, i = 0;
+		     ('\0' != cp[i]) && isdigit (cp[i]);
+		     i++) {
 			dtime = dtime * 10 + cp[i] - '0';
+		}
 
-		if ((cp[i] != ',' && cp[i]) || dtime > 2400 || dtime % 100 > 59)
+		if (   ((',' != cp[i]) && ('\0' != cp[i]))
+		    || (dtime > 2400)
+		    || ((dtime % 100) > 59)) {
 			goto again;
+		}
 
 		port.pt_times[j].t_end = dtime;
 		cp = cp + i + 1;
@@ -340,24 +346,32 @@ static struct port *getttyuser (const char *tty, const char *user)
 
 	setportent ();
 
-	while ((port = getportent ())) {
-		if (port->pt_names == 0 || port->pt_users == 0)
+	while ((port = getportent ()) != NULL) {
+		if (   (0 == port->pt_names)
+		    || (0 == port->pt_users)) {
 			continue;
+		}
 
-		for (i = 0; port->pt_names[i]; i++)
-			if (portcmp (port->pt_names[i], tty) == 0)
+		for (i = 0; NULL != port->pt_names[i]; i++) {
+			if (portcmp (port->pt_names[i], tty) == 0) {
 				break;
+			}
+		}
 
-		if (port->pt_names[i] == 0)
+		if (port->pt_names[i] == 0) {
 			continue;
+		}
 
-		for (j = 0; port->pt_users[j]; j++)
-			if (strcmp (user, port->pt_users[j]) == 0 ||
-			    strcmp (port->pt_users[j], "*") == 0)
+		for (j = 0; NULL != port->pt_users[j]; j++) {
+			if (   (strcmp (user, port->pt_users[j]) == 0)
+			    || (strcmp (port->pt_users[j], "*") == 0)) {
 				break;
+			}
+		}
 
-		if (port->pt_users[j] != 0)
+		if (port->pt_users[j] != 0) {
 			break;
+		}
 	}
 	endportent ();
 	return port;
@@ -370,7 +384,7 @@ static struct port *getttyuser (const char *tty, const char *user)
  *	the user name and TTY given.
  */
 
-int isttytime (const char *id, const char *port, time_t when)
+bool isttytime (const char *id, const char *port, time_t when)
 {
 	int i;
 	int dtime;
@@ -379,24 +393,27 @@ int isttytime (const char *id, const char *port, time_t when)
 
 	/*
 	 * Try to find a matching entry for this user.  Default to
-	 * letting the user in - there are pleny of ways to have an
+	 * letting the user in - there are plenty of ways to have an
 	 * entry to match all users.
 	 */
 
-	if (!(pp = getttyuser (port, id)))
-		return 1;
+	pp = getttyuser (port, id);
+	if (NULL == pp) {
+		return true;
+	}
 
 	/*
 	 * The entry is there, but has no time entries - don't
 	 * ever let them login.
 	 */
 
-	if (pp->pt_times == 0)
-		return 0;
+	if (0 == pp->pt_times) {
+		return false;
+	}
 
 	/*
 	 * The current time is converted to HHMM format for
-	 * comparision against the time values in the TTY entry.
+	 * comparison against the time values in the TTY entry.
 	 */
 
 	tm = localtime (&when);
@@ -405,22 +422,25 @@ int isttytime (const char *id, const char *port, time_t when)
 	/*
 	 * Each time entry is compared against the current
 	 * time.  For entries with the start after the end time,
-	 * the comparision is made so that the time is between
+	 * the comparison is made so that the time is between
 	 * midnight and either the start or end time.
 	 */
 
 	for (i = 0; pp->pt_times[i].t_start != -1; i++) {
-		if (!(pp->pt_times[i].t_days & PORT_DAY (tm->tm_wday)))
+		if (!(pp->pt_times[i].t_days & PORT_DAY (tm->tm_wday))) {
 			continue;
+		}
 
 		if (pp->pt_times[i].t_start <= pp->pt_times[i].t_end) {
-			if (dtime >= pp->pt_times[i].t_start &&
-			    dtime <= pp->pt_times[i].t_end)
-				return 1;
+			if (   (dtime >= pp->pt_times[i].t_start)
+			    && (dtime <= pp->pt_times[i].t_end)) {
+				return true;
+			}
 		} else {
-			if (dtime >= pp->pt_times[i].t_start ||
-			    dtime <= pp->pt_times[i].t_end)
-				return 1;
+			if (   (dtime >= pp->pt_times[i].t_start)
+			    || (dtime <= pp->pt_times[i].t_end)) {
+				return true;
+			}
 		}
 	}
 
@@ -429,5 +449,6 @@ int isttytime (const char *id, const char *port, time_t when)
 	 * be let in right now.
 	 */
 
-	return 0;
+	return false;
 }
+

lib/port.h

@@ -1,32 +1,9 @@
 /*
- * Copyright (c) 1989 - 1991, Julianne Frances Haugh
- * Copyright (c) 1996 - 1997, Marek Michałkiewicz
- * Copyright (c) 2005       , Tomasz Kłoczko
- * All rights reserved.
+ * SPDX-FileCopyrightText: 1989 - 1991, Julianne Frances Haugh
+ * SPDX-FileCopyrightText: 1996 - 1997, Marek Michałkiewicz
+ * SPDX-FileCopyrightText: 2005       , Tomasz Kłoczko
  *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- * 1. Redistributions of source code must retain the above copyright
- *    notice, this list of conditions and the following disclaimer.
- * 2. Redistributions in binary form must reproduce the above copyright
- *    notice, this list of conditions and the following disclaimer in the
- *    documentation and/or other materials provided with the distribution.
- * 3. The name of the copyright holders or contributors may not be used to
- *    endorse or promote products derived from this software without
- *    specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
- * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
- * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
- * PARTICULAR PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE COPYRIGHT
- * HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
- * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
- * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
- * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
- * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
- * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
- * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ * SPDX-License-Identifier: BSD-3-Clause
  */
 
 /*

lib/prototypes.h

@@ -1,33 +1,10 @@
 /*
- * Copyright (c) 1990 - 1994, Julianne Frances Haugh
- * Copyright (c) 1996 - 2000, Marek Michałkiewicz
- * Copyright (c) 2003 - 2006, Tomasz Kłoczko
- * Copyright (c) 2007 - 2008, Nicolas François
- * All rights reserved.
+ * SPDX-FileCopyrightText: 1990 - 1994, Julianne Frances Haugh
+ * SPDX-FileCopyrightText: 1996 - 2000, Marek Michałkiewicz
+ * SPDX-FileCopyrightText: 2003 - 2006, Tomasz Kłoczko
+ * SPDX-FileCopyrightText: 2007 - 2010, Nicolas François
  *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- * 1. Redistributions of source code must retain the above copyright
- *    notice, this list of conditions and the following disclaimer.
- * 2. Redistributions in binary form must reproduce the above copyright
- *    notice, this list of conditions and the following disclaimer in the
- *    documentation and/or other materials provided with the distribution.
- * 3. The name of the copyright holders or contributors may not be used to
- *    endorse or promote products derived from this software without
- *    specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
- * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
- * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
- * PARTICULAR PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE COPYRIGHT
- * HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
- * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
- * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
- * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
- * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
- * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
- * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ * SPDX-License-Identifier: BSD-3-Clause
  */
 
 /*
@@ -42,12 +19,15 @@
 #ifndef _PROTOTYPES_H
 #define _PROTOTYPES_H
 
+#include <config.h>
+
 #include <sys/stat.h>
-#if HAVE_UTMPX_H
+#ifdef USE_UTMPX
 #include <utmpx.h>
 #else
 #include <utmp.h>
 #endif
+#include <sys/types.h>
 #include <pwd.h>
 #include <grp.h>
 #include <shadow.h>
@@ -57,40 +37,88 @@
 #include "commonio.h"
 
 /* addgrps.c */
+#if defined (HAVE_SETGROUPS) && ! defined (USE_PAM)
 extern int add_groups (const char *);
-extern void add_cons_grps (void);
+#endif
 
 /* age.c */
-extern void agecheck (const struct passwd *, const struct spwd *);
-extern int expire (const struct passwd *, const struct spwd *);
-extern int isexpired (const struct passwd *, const struct spwd *);
+extern void agecheck (/*@null@*/const struct spwd *);
+extern int expire (const struct passwd *, /*@null@*/const struct spwd *);
+/* isexpired.c */
+extern int isexpired (const struct passwd *, /*@null@*/const struct spwd *);
+
+/* btrfs.c */
+#ifdef WITH_BTRFS
+extern int btrfs_create_subvolume(const char *path);
+extern int btrfs_remove_subvolume(const char *path);
+extern int btrfs_is_subvolume(const char *path);
+extern int is_btrfs(const char *path);
+#endif
 
 /* basename() renamed to Basename() to avoid libc name space confusion */
 /* basename.c */
-extern char *Basename (char *str);
+extern /*@observer@*/const char *Basename (const char *str);
 
 /* chowndir.c */
-extern int chown_tree (const char *, uid_t, uid_t, gid_t, gid_t);
+extern int chown_tree (const char *root,
+                       uid_t old_uid, uid_t new_uid,
+                       gid_t old_gid, gid_t new_gid);
 
 /* chowntty.c */
-extern void chown_tty (const char *, const struct passwd *);
+extern void chown_tty (const struct passwd *);
+
+/* cleanup.c */
+typedef /*@null@*/void (*cleanup_function) (/*@null@*/void *arg);
+void add_cleanup (/*@notnull@*/cleanup_function pcf, /*@null@*/void *arg);
+void del_cleanup (/*@notnull@*/cleanup_function pcf);
+void do_cleanups (void);
+
+/* cleanup_group.c */
+struct cleanup_info_mod {
+	char *audit_msg;
+	char *action;
+	/*@observer@*/const char *name;
+};
+void cleanup_report_add_group (void *group_name);
+void cleanup_report_add_group_group (void *group_name);
+#ifdef SHADOWGRP
+void cleanup_report_add_group_gshadow (void *group_name);
+#endif
+void cleanup_report_del_group (void *group_name);
+void cleanup_report_del_group_group (void *group_name);
+#ifdef SHADOWGRP
+void cleanup_report_del_group_gshadow (void *group_name);
+#endif
+void cleanup_report_mod_passwd (void *cleanup_info);
+void cleanup_report_mod_group (void *cleanup_info);
+void cleanup_report_mod_gshadow (void *cleanup_info);
+void cleanup_unlock_group (/*@null@*/void *unused);
+#ifdef SHADOWGRP
+void cleanup_unlock_gshadow (/*@null@*/void *unused);
+#endif
+void cleanup_unlock_passwd (/*@null@*/void *unused);
 
 /* console.c */
-extern int console (const char *);
+extern bool console (const char *);
 
 /* copydir.c */
 extern int copy_tree (const char *src_root, const char *dst_root,
-                      long int uid, long int gid);
-extern int remove_tree (const char *root);
+                      bool copy_root,
+                      bool reset_selinux,
+                      uid_t old_uid, uid_t new_uid,
+                      gid_t old_gid, gid_t new_gid);
+
+/* date_to_str.c */
+extern void date_to_str (size_t size, char buf[size], long date);
 
 /* encrypt.c */
-extern char *pw_encrypt (const char *, const char *);
+extern /*@exposed@*//*@null@*/char *pw_encrypt (const char *, const char *);
 
 /* entry.c */
 extern void pw_entry (const char *, struct passwd *);
 
 /* env.c */
-extern void addenv (const char *, const char *);
+extern void addenv (const char *, /*@null@*/const char *);
 extern void initenv (void);
 extern void set_env (int, char *const *);
 extern void sanitize_env (void);
@@ -99,52 +127,103 @@ extern void sanitize_env (void);
 extern void change_field (char *, size_t, const char *);
 extern int valid_field (const char *, const char *);
 
-/* find_new_ids.c */
-extern int find_new_uid (int sys_user, uid_t *uid, uid_t const *preferred_uid);
-extern int find_new_gid (int sys_group, gid_t *gid, gid_t const *preferred_gid);
+/* find_new_gid.c */
+extern int find_new_gid (bool sys_group,
+                         gid_t *gid,
+                         /*@null@*/gid_t const *preferred_gid);
+
+/* find_new_uid.c */
+extern int find_new_uid (bool sys_user,
+                         uid_t *uid,
+                         /*@null@*/uid_t const *preferred_uid);
+
+#ifdef ENABLE_SUBIDS
+/* find_new_sub_gids.c */
+extern int find_new_sub_gids (gid_t *range_start, unsigned long *range_count);
+
+/* find_new_sub_uids.c */
+extern int find_new_sub_uids (uid_t *range_start, unsigned long *range_count);
+#endif				/* ENABLE_SUBIDS */
+
+
+/* get_gid.c */
+extern int get_gid (const char *gidstr, gid_t *gid);
+
+/* getgr_nam_gid.c */
+extern /*@only@*//*@null@*/struct group *getgr_nam_gid (/*@null@*/const char *grname);
 
 /* getlong.c */
-extern int getlong(const char *numstr, long int *result);
+extern int getlong (const char *numstr, /*@out@*/long int *result);
+
+/* get_pid.c */
+extern int get_pid (const char *pidstr, pid_t *pid);
+
+/* getrange */
+extern int getrange (const char *range,
+                     unsigned long *min, bool *has_min,
+                     unsigned long *max, bool *has_max);
+
+/* gettime.c */
+extern time_t gettime (void);
+
+/* get_uid.c */
+extern int get_uid (const char *uidstr, uid_t *uid);
+
+/* getulong.c */
+extern int getulong (const char *numstr, /*@out@*/unsigned long int *result);
 
 /* fputsx.c */
-extern char *fgetsx (char *, int, FILE *);
+extern /*@null@*/char *fgetsx (/*@returned@*/ /*@out@*/char *, int, FILE *);
 extern int fputsx (const char *, FILE *);
 
 /* groupio.c */
 extern void __gr_del_entry (const struct commonio_entry *ent);
-extern struct commonio_db *__gr_get_db (void);
-extern struct commonio_entry *__gr_get_head (void);
+extern /*@observer@*/const struct commonio_db *__gr_get_db (void);
+extern /*@dependent@*/ /*@null@*/struct commonio_entry *__gr_get_head (void);
 extern void __gr_set_changed (void);
 
 /* groupmem.c */
-extern struct group *__gr_dup (const struct group *grent);
+extern /*@null@*/ /*@only@*/struct group *__gr_dup (const struct group *grent);
+extern void gr_free_members (struct group *grent);
+extern void gr_free (/*@out@*/ /*@only@*/struct group *grent);
+extern bool gr_append_member (struct group *grp, char *member);
 
 /* hushed.c */
-extern int hushed (const struct passwd *);
+extern bool hushed (const char *username);
 
 /* audit_help.c */
 #ifdef WITH_AUDIT
 extern int audit_fd;
 extern void audit_help_open (void);
+/* Use AUDIT_NO_ID when a name is provided to audit_logger instead of an ID */
+#define AUDIT_NO_ID	((unsigned int) -1)
+typedef enum {
+	SHADOW_AUDIT_FAILURE = 0,
+	SHADOW_AUDIT_SUCCESS = 1} shadow_audit_result;
 extern void audit_logger (int type, const char *pgname, const char *op,
-			  const char *name, unsigned int id, int result);
+                          const char *name, unsigned int id,
+                          shadow_audit_result result);
+void audit_logger_message (const char *message, shadow_audit_result result);
 #endif
 
 /* limits.c */
+#ifndef USE_PAM
 extern void setup_limits (const struct passwd *);
+#endif
 
 /* list.c */
-extern char **add_list (char **, const char *);
-extern char **del_list (char **, const char *);
-extern char **dup_list (char *const *);
-extern int is_on_list (char *const *, const char *);
-extern char **comma_to_list (const char *);
+extern /*@only@*/ /*@out@*/char **add_list (/*@returned@*/ /*@only@*/char **, const char *);
+extern /*@only@*/ /*@out@*/char **del_list (/*@returned@*/ /*@only@*/char **, const char *);
+extern /*@only@*/ /*@out@*/char **dup_list (char *const *);
+extern bool is_on_list (char *const *list, const char *member);
+extern /*@only@*/char **comma_to_list (const char *);
 
 /* log.c */
-extern void dolastlog (struct lastlog *ll,
-                       const struct passwd *pw,
-                       const char *line,
-                       const char *host);
+extern void dolastlog (
+	struct lastlog *ll,
+	const struct passwd *pw,
+	/*@unique@*/const char *line,
+	/*@unique@*/const char *host);
 
 /* login_nopam.c */
 extern int login_access (const char *user, const char *from);
@@ -159,22 +238,108 @@ extern void mailcheck (void);
 extern void motd (void);
 
 /* myname.c */
-extern struct passwd *get_my_pwent (void);
+extern /*@null@*//*@only@*/struct passwd *get_my_pwent (void);
+
+/* nss.c */
+#include <libsubid/subid.h>
+extern void nss_init(const char *nsswitch_path);
+extern bool nss_is_initialized(void);
+
+struct subid_nss_ops {
+	/*
+	 * nss_has_range: does a user own a given subid range
+	 *
+	 * @owner: username
+	 * @start: first subid in queried range
+	 * @count: number of subids in queried range
+	 * @idtype: subuid or subgid
+	 * @result: true if @owner has been allocated the subid range.
+	 *
+	 * returns success if the module was able to determine an answer (true or false),
+	 * else an error status.
+	 */
+	enum subid_status (*has_range)(const char *owner, unsigned long start, unsigned long count, enum subid_type idtype, bool *result);
+
+	/*
+	 * nss_list_owner_ranges: list the subid ranges delegated to a user.
+	 *
+	 * @owner - string representing username being queried
+	 * @id_type - subuid or subgid
+	 * @ranges - pointer to an array of struct subid_range, or NULL.  The
+	 *           returned array must be freed by the caller.
+	 * @count - pointer to an integer into which the number of returned ranges
+	 *          is written.
+
+	 * returns success if the module was able to determine an answer,
+	 * else an error status.
+	 */
+	enum subid_status (*list_owner_ranges)(const char *owner, enum subid_type id_type, struct subid_range **ranges, int *count);
+
+	/*
+	 * nss_find_subid_owners: find uids who own a given subuid or subgid.
+	 *
+	 * @id - the delegated id (subuid or subgid) being queried
+	 * @id_type - subuid or subgid
+	 * @uids - pointer to an array of uids which will be allocated by
+	 *         nss_find_subid_owners()
+	 * @count - number of uids found
+	 *
+	 * returns success if the module was able to determine an answer,
+	 * else an error status.
+	 */
+	enum subid_status (*find_subid_owners)(unsigned long id, enum subid_type id_type, uid_t **uids, int *count);
+
+	/* The dlsym handle to close */
+	void *handle;
+};
+
+extern struct subid_nss_ops *get_subid_nss_handle(void);
+
+
+/* pam_pass_non_interactive.c */
+#ifdef USE_PAM
+extern int do_pam_passwd_non_interactive (const char *pam_service,
+                                           const char *username,
+                                           const char* password);
+#endif				/* USE_PAM */
 
 /* obscure.c */
-extern int obscure (const char *, const char *, const struct passwd *);
+#ifndef USE_PAM
+extern bool obscure (const char *, const char *, const struct passwd *);
+#endif
 
 /* pam_pass.c */
-extern void do_pam_passwd (const char *, int, int);
+#ifdef USE_PAM
+extern void do_pam_passwd (const char *user, bool silent, bool change_expired);
+#endif
 
 /* port.c */
-extern int isttytime (const char *, const char *, time_t);
+extern bool isttytime (const char *, const char *, time_t);
+
+/* prefix_flag.c */
+extern const char* process_prefix_flag (const char* short_opt, int argc, char **argv);
+extern struct group *prefix_getgrnam(const char *name);
+extern struct group *prefix_getgrgid(gid_t gid);
+extern struct passwd *prefix_getpwuid(uid_t uid);
+extern struct passwd *prefix_getpwnam(const char* name);
+extern struct spwd *prefix_getspnam(const char* name);
+extern struct group *prefix_getgr_nam_gid(const char *grname);
+extern void prefix_setpwent(void);
+extern struct passwd* prefix_getpwent(void);
+extern void prefix_endpwent(void);
+extern void prefix_setgrent(void);
+extern struct group* prefix_getgrent(void);
+extern void prefix_endgrent(void);
 
 /* pwd2spwd.c */
+#ifndef USE_PAM
 extern struct spwd *pwd_to_spwd (const struct passwd *);
+#endif
 
 /* pwdcheck.c */
+#ifndef USE_PAM
 extern void passwd_check (const char *, const char *, const char *);
+#endif
 
 /* pwd_init.c */
 extern void pwd_init (void);
@@ -182,21 +347,47 @@ extern void pwd_init (void);
 /* pwio.c */
 extern void __pw_del_entry (const struct commonio_entry *ent);
 extern struct commonio_db *__pw_get_db (void);
-extern struct commonio_entry *__pw_get_head (void);
+extern /*@dependent@*/ /*@null@*/struct commonio_entry *__pw_get_head (void);
 
 /* pwmem.c */
-extern struct passwd *__pw_dup (const struct passwd *pwent);
+extern /*@null@*/ /*@only@*/struct passwd *__pw_dup (const struct passwd *pwent);
+extern void pw_free (/*@out@*/ /*@only@*/struct passwd *pwent);
+
+/* remove_tree.c */
+extern int remove_tree (const char *root, bool remove_root);
 
 /* rlogin.c */
-extern int do_rlogin (const char *, char *, int, char *, int);
+extern int do_rlogin (const char *remote_host, char *name, size_t namelen,
+                      char *term, size_t termlen);
+
+/* root_flag.c */
+extern void process_root_flag (const char* short_opt, int argc, char **argv);
 
 /* salt.c */
-extern char *crypt_make_salt (const char *meth, void *arg);
+extern /*@observer@*/const char *crypt_make_salt (/*@null@*//*@observer@*/const char *meth, /*@null@*/void *arg);
+
+/* selinux.c */
+#ifdef WITH_SELINUX
+extern int set_selinux_file_context (const char *dst_name, mode_t mode);
+extern void reset_selinux_handle (void);
+extern int reset_selinux_file_context (void);
+extern int check_selinux_permit (const char *perm_name);
+#endif
+
+/* semanage.c */
+#ifdef WITH_SELINUX
+extern int set_seuser(const char *login_name, const char *seuser_name);
+extern int del_seuser(const char *login_name);
+#endif
 
 /* setugid.c */
-extern int setup_groups (const struct passwd *);
-extern int change_uid (const struct passwd *);
-extern int setup_uid_gid (const struct passwd *, int);
+extern int setup_groups (const struct passwd *info);
+extern int change_uid (const struct passwd *info);
+#if (defined HAVE_INITGROUPS) && (! defined USE_PAM)
+extern int setup_uid_gid (const struct passwd *info, bool is_console);
+#else
+extern int setup_uid_gid (const struct passwd *info);
+#endif
 
 /* setup.c */
 extern void setup (struct passwd *);
@@ -210,30 +401,46 @@ extern struct group *sgetgrent (const char *buf);
 /* sgetpwent.c */
 extern struct passwd *sgetpwent (const char *buf);
 
+/* sgetspent.c */
+#ifndef HAVE_SGETSPENT
+extern struct spwd *sgetspent (const char *string);
+#endif
+
 /* sgroupio.c */
 extern void __sgr_del_entry (const struct commonio_entry *ent);
-extern struct sgrp *__sgr_dup (const struct sgrp *sgent);
-extern struct commonio_entry *__sgr_get_head (void);
+extern /*@null@*/ /*@only@*/struct sgrp *__sgr_dup (const struct sgrp *sgent);
+extern void sgr_free (/*@out@*/ /*@only@*/struct sgrp *sgent);
+extern /*@dependent@*/ /*@null@*/struct commonio_entry *__sgr_get_head (void);
 extern void __sgr_set_changed (void);
 
 /* shadowio.c */
-extern struct commonio_entry *__spw_get_head (void);
+extern /*@dependent@*/ /*@null@*/struct commonio_entry *__spw_get_head (void);
 extern void __spw_del_entry (const struct commonio_entry *ent);
 
 /* shadowmem.c */
-extern struct spwd *__spw_dup (const struct spwd *spent);
+extern /*@null@*/ /*@only@*/struct spwd *__spw_dup (const struct spwd *spent);
+extern void spw_free (/*@out@*/ /*@only@*/struct spwd *spent);
 
 /* shell.c */
-extern int shell (const char *, const char *, char *const *);
+extern int shell (const char *file, /*@null@*/const char *arg, char *const envp[]);
+
+/* spawn.c */
+extern int run_command (const char *cmd, const char *argv[],
+                        /*@null@*/const char *envp[], /*@out@*/int *status);
 
 /* strtoday.c */
 extern long strtoday (const char *);
 
 /* suauth.c */
-extern int check_su_auth (const char *actual_id, const char *wanted_id);
+extern int check_su_auth (const char *actual_id,
+                          const char *wanted_id,
+                          bool su_to_root);
 
 /* sulog.c */
-extern void sulog (const char *, int, const char *, const char *);
+extern void sulog (const char *tty,
+                   bool success,
+                   const char *oldname,
+                   const char *name);
 
 /* sub.c */
 extern void subsystem (const struct passwd *);
@@ -242,34 +449,54 @@ extern void subsystem (const struct passwd *);
 extern void ttytype (const char *);
 
 /* tz.c */
-extern char *tz (const char *);
+#ifndef USE_PAM
+extern /*@observer@*/const char *tz (const char *);
+#endif
 
 /* ulimit.c */
-extern void set_filesize_limit (int);
+extern int set_filesize_limit (int blocks);
+
+/* user_busy.c */
+extern int user_busy (const char *name, uid_t uid);
 
 /* utmp.c */
-extern void checkutmp (int);
-extern void setutmp (const char *, const char *, const char *);
+#ifndef USE_UTMPX
+extern /*@null@*/struct utmp *get_current_utmp (void);
+extern struct utmp *prepare_utmp (const char *name,
+                                  const char *line,
+                                  const char *host,
+                                  /*@null@*/const struct utmp *ut);
+extern int setutmp (struct utmp *ut);
+#else
+extern /*@null@*/struct utmpx *get_current_utmp (void);
+extern struct utmpx *prepare_utmpx (const char *name,
+                                    const char *line,
+                                    const char *host,
+                                    /*@null@*/const struct utmpx *ut);
+extern int setutmpx (struct utmpx *utx);
+#endif				/* USE_UTMPX */
 
 /* valid.c */
-extern int valid (const char *, const struct passwd *);
+extern bool valid (const char *, const struct passwd *);
 
 /* xmalloc.c */
-extern char *xmalloc (size_t);
-extern char *xstrdup (const char *);
+extern /*@maynotreturn@*/ /*@only@*//*@out@*//*@notnull@*/void *xmalloc (size_t size)
+  /*@ensures MaxSet(result) == (size - 1); @*/;
+extern /*@maynotreturn@*/ /*@only@*//*@notnull@*/char *xstrdup (const char *);
+extern void xfree(void *ap);
 
 /* xgetpwnam.c */
-extern struct passwd *xgetpwnam (const char *);
+extern /*@null@*/ /*@only@*/struct passwd *xgetpwnam (const char *);
 /* xgetpwuid.c */
-extern struct passwd *xgetpwuid (uid_t);
+extern /*@null@*/ /*@only@*/struct passwd *xgetpwuid (uid_t);
 /* xgetgrnam.c */
-extern struct group *xgetgrnam (const char *);
+extern /*@null@*/ /*@only@*/struct group *xgetgrnam (const char *);
 /* xgetgrgid.c */
-extern struct group *xgetgrgid (gid_t);
+extern /*@null@*/ /*@only@*/struct group *xgetgrgid (gid_t);
 /* xgetspnam.c */
-extern struct spwd *xgetspnam(const char *);
+extern /*@null@*/ /*@only@*/struct spwd *xgetspnam(const char *);
 
 /* yesno.c */
-extern int yes_or_no (int read_only);
+extern bool yes_or_no (bool read_only);
 
 #endif				/* _PROTOTYPES_H */

lib/pwauth.c

@@ -1,33 +1,10 @@
 /*
- * Copyright (c) 1992 - 1994, Julianne Frances Haugh
- * Copyright (c) 1996 - 2000, Marek Michałkiewicz
- * Copyright (c) 2003 - 2006, Tomasz Kłoczko
- * Copyright (c) 2008       , Nicolas François
- * All rights reserved.
+ * SPDX-FileCopyrightText: 1992 - 1994, Julianne Frances Haugh
+ * SPDX-FileCopyrightText: 1996 - 2000, Marek Michałkiewicz
+ * SPDX-FileCopyrightText: 2003 - 2006, Tomasz Kłoczko
+ * SPDX-FileCopyrightText: 2008 - 2009, Nicolas François
  *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- * 1. Redistributions of source code must retain the above copyright
- *    notice, this list of conditions and the following disclaimer.
- * 2. Redistributions in binary form must reproduce the above copyright
- *    notice, this list of conditions and the following disclaimer in the
- *    documentation and/or other materials provided with the distribution.
- * 3. The name of the copyright holders or contributors may not be used to
- *    endorse or promote products derived from this software without
- *    specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
- * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
- * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
- * PARTICULAR PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE COPYRIGHT
- * HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
- * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
- * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
- * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
- * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
- * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
- * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ * SPDX-License-Identifier: BSD-3-Clause
  */
 
 #include <config.h>
@@ -54,8 +31,8 @@ static const char *PROMPT = gettext_noop ("Password: ");
 static const char *PROMPT = gettext_noop ("%s's Password: ");
 #endif
 
-int wipe_clear_pass = 1;
-char *clear_pass = NULL;
+bool wipe_clear_pass = true;
+/*@null@*/char *clear_pass = NULL;
 
 /*
  * pw_auth - perform getpass/crypt authentication
@@ -65,16 +42,19 @@ char *clear_pass = NULL;
  *	compared.
  */
 
-int
-pw_auth (const char *cipher, const char *user, int reason, const char *input)
+int pw_auth (const char *cipher,
+             const char *user,
+             int reason,
+             /*@null@*/const char *input)
 {
 	char prompt[1024];
 	char *clear = NULL;
 	const char *cp;
+	const char *encrypted;
 	int retval;
 
 #ifdef	SKEY
-	int use_skey = 0;
+	bool use_skey = false;
 	char challenge_info[40];
 	struct skey skey;
 #endif
@@ -83,15 +63,17 @@ pw_auth (const char *cipher, const char *user, int reason, const char *input)
 	 * There are programs for adding and deleting authentication data.
 	 */
 
-	if (reason == PW_ADD || reason == PW_DELETE)
+	if ((PW_ADD == reason) || (PW_DELETE == reason)) {
 		return 0;
+	}
 
 	/*
 	 * There are even programs for changing the user name ...
 	 */
 
-	if (reason == PW_CHANGE && input != (char *) 0)
+	if ((PW_CHANGE == reason) && (NULL != input)) {
 		return 0;
+	}
 
 	/*
 	 * WARNING:
@@ -102,8 +84,9 @@ pw_auth (const char *cipher, const char *user, int reason, const char *input)
 	 * revisited.
 	 */
 
-	if (reason == PW_CHANGE && getuid () == 0)
+	if ((PW_CHANGE == reason) && (getuid () == 0)) {
 		return 0;
+	}
 
 	/*
 	 * WARNING:
@@ -114,13 +97,14 @@ pw_auth (const char *cipher, const char *user, int reason, const char *input)
 	 * matter.
 	 */
 
-	if (cipher == (char *) 0 || *cipher == '\0')
+	if ((NULL == cipher) || ('\0' == *cipher)) {
 		return 0;
+	}
 
 #ifdef	SKEY
 	/*
 	 * If the user has an S/KEY entry show them the pertinent info
-	 * and then we can try validating the created cyphertext and the SKEY.
+	 * and then we can try validating the created ciphertext and the SKEY.
 	 * If there is no SKEY information we default to not using SKEY.
 	 */
 
@@ -132,8 +116,9 @@ pw_auth (const char *cipher, const char *user, int reason, const char *input)
 #  define skeychallenge(s,u,c) skeychallenge(s,u,c,sizeof(c))
 # endif
 
-	if (skeychallenge (&skey, user, challenge_info) == 0)
-		use_skey = 1;
+	if (skeychallenge (&skey, user, challenge_info) == 0) {
+		use_skey = true;
+	}
 #endif
 
 	/*
@@ -141,17 +126,20 @@ pw_auth (const char *cipher, const char *user, int reason, const char *input)
 	 * get the cleartext password for us.
 	 */
 
-	if (reason != PW_FTP && reason != PW_REXEC && !input) {
-		if (!(cp = getdef_str ("LOGIN_STRING")))
+	if ((PW_FTP != reason) && (PW_REXEC != reason) && (NULL == input)) {
+		cp = getdef_str ("LOGIN_STRING");
+		if (NULL == cp) {
 			cp = _(PROMPT);
+		}
 #ifdef	SKEY
-		if (use_skey)
+		if (use_skey) {
 			printf ("[%s]\n", challenge_info);
+		}
 #endif
 
 		snprintf (prompt, sizeof prompt, cp, user);
 		clear = getpass (prompt);
-		if (!clear) {
+		if (NULL == clear) {
 			static char c[1];
 
 			c[0] = '\0';
@@ -167,7 +155,12 @@ pw_auth (const char *cipher, const char *user, int reason, const char *input)
 	 * the results there as well.
 	 */
 
-	retval = strcmp (pw_encrypt (input, cipher), cipher);
+	encrypted = pw_encrypt (input, cipher);
+	if (NULL != encrypted) {
+		retval = strcmp (encrypted, cipher);
+	} else {
+		retval = -1;
+	}
 
 #ifdef  SKEY
 	/*
@@ -177,9 +170,9 @@ pw_auth (const char *cipher, const char *user, int reason, const char *input)
 	 * ...Re-prompt, with echo on.
 	 * -- AR 8/22/1999
 	 */
-	if (retval && !input[0] && (use_skey)) {
+	if ((0 != retval) && ('\0' == input[0]) && use_skey) {
 		clear = getpass (prompt);
-		if (!clear) {
+		if (NULL == clear) {
 			static char c[1];
 
 			c[0] = '\0';
@@ -188,13 +181,15 @@ pw_auth (const char *cipher, const char *user, int reason, const char *input)
 		input = clear;
 	}
 
-	if (retval && use_skey) {
+	if ((0 != retval) && use_skey) {
 		int passcheck = -1;
 
-		if (skeyverify (&skey, input) == 0)
+		if (skeyverify (&skey, input) == 0) {
 			passcheck = skey.n;
-		if (passcheck > 0)
+		}
+		if (passcheck > 0) {
 			retval = 0;
+		}
 	}
 #endif
 
@@ -206,8 +201,9 @@ pw_auth (const char *cipher, const char *user, int reason, const char *input)
 	 */
 
 	clear_pass = clear;
-	if (wipe_clear_pass && clear && *clear)
+	if (wipe_clear_pass && (NULL != clear) && ('\0' != *clear)) {
 		strzero (clear);
+	}
 	return retval;
 }
 #else				/* !USE_PAM */

lib/pwauth.h

@@ -1,40 +1,24 @@
 /*
- * Copyright (c) 1992 - 1993, Julianne Frances Haugh
- * Copyright (c) 1996 - 1997, Marek Michałkiewicz
- * Copyright (c) 2003 - 2005, Tomasz Kłoczko
- * All rights reserved.
+ * SPDX-FileCopyrightText: 1992 - 1993, Julianne Frances Haugh
+ * SPDX-FileCopyrightText: 1996 - 1997, Marek Michałkiewicz
+ * SPDX-FileCopyrightText: 2003 - 2005, Tomasz Kłoczko
+ * SPDX-FileCopyrightText: 2009       , Nicolas François
  *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- * 1. Redistributions of source code must retain the above copyright
- *    notice, this list of conditions and the following disclaimer.
- * 2. Redistributions in binary form must reproduce the above copyright
- *    notice, this list of conditions and the following disclaimer in the
- *    documentation and/or other materials provided with the distribution.
- * 3. The name of the copyright holders or contributors may not be used to
- *    endorse or promote products derived from this software without
- *    specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
- * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
- * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
- * PARTICULAR PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE COPYRIGHT
- * HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
- * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
- * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
- * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
- * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
- * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
- * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ * SPDX-License-Identifier: BSD-3-Clause
  */
 
 /*
  *	$Id$
  */
 
+#ifndef _PWAUTH_H
+#define _PWAUTH_H
+
 #ifndef USE_PAM
-int pw_auth (const char *cipher, const char *user, int flag, const char *input);
+int pw_auth (const char *cipher,
+             const char *user,
+             int flag,
+             /*@null@*/const char *input);
 #endif				/* !USE_PAM */
 
 /*
@@ -60,3 +44,5 @@ int pw_auth (const char *cipher, const char *user, int flag, const char *input);
 #define	PW_RLOGIN	202
 #define	PW_FTP		203
 #define	PW_REXEC	204
+
+#endif /* _PWAUTH_H */

lib/pwio.c

@@ -1,34 +1,11 @@
 /*
- * Copyright (c) 1990 - 1994, Julianne Frances Haugh
- * Copyright (c) 1996 - 2000, Marek Michałkiewicz
- * Copyright (c) 2001       , Michał Moskal
- * Copyright (c) 2003 - 2005, Tomasz Kłoczko
- * Copyright (c) 2007 - 2008, Nicolas François
- * All rights reserved.
+ * SPDX-FileCopyrightText: 1990 - 1994, Julianne Frances Haugh
+ * SPDX-FileCopyrightText: 1996 - 2000, Marek Michałkiewicz
+ * SPDX-FileCopyrightText: 2001       , Michał Moskal
+ * SPDX-FileCopyrightText: 2003 - 2005, Tomasz Kłoczko
+ * SPDX-FileCopyrightText: 2007 - 2009, Nicolas François
  *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- * 1. Redistributions of source code must retain the above copyright
- *    notice, this list of conditions and the following disclaimer.
- * 2. Redistributions in binary form must reproduce the above copyright
- *    notice, this list of conditions and the following disclaimer in the
- *    documentation and/or other materials provided with the distribution.
- * 3. The name of the copyright holders or contributors may not be used to
- *    endorse or promote products derived from this software without
- *    specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
- * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
- * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
- * PARTICULAR PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE COPYRIGHT
- * HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
- * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
- * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
- * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
- * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
- * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
- * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ * SPDX-License-Identifier: BSD-3-Clause
  */
 
 #include <config.h>
@@ -42,23 +19,18 @@
 #include "commonio.h"
 #include "pwio.h"
 
-static void *passwd_dup (const void *ent)
+static /*@null@*/ /*@only@*/void *passwd_dup (const void *ent)
 {
 	const struct passwd *pw = ent;
 
 	return __pw_dup (pw);
 }
 
-static void passwd_free (void *ent)
+static void passwd_free (/*@out@*/ /*@only@*/void *ent)
 {
 	struct passwd *pw = ent;
 
-	free (pw->pw_name);
-	free (pw->pw_passwd);
-	free (pw->pw_gecos);
-	free (pw->pw_dir);
-	free (pw->pw_shell);
-	free (pw);
+	pw_free (pw);
 }
 
 static const char *passwd_getname (const void *ent)
@@ -77,6 +49,17 @@ static int passwd_put (const void *ent, FILE * file)
 {
 	const struct passwd *pw = ent;
 
+	if (   (NULL == pw)
+	    || (valid_field (pw->pw_name, ":\n") == -1)
+	    || (valid_field (pw->pw_passwd, ":\n") == -1)
+	    || (pw->pw_uid == (uid_t)-1)
+	    || (pw->pw_gid == (gid_t)-1)
+	    || (valid_field (pw->pw_gecos, ":\n") == -1)
+	    || (valid_field (pw->pw_dir, ":\n") == -1)
+	    || (valid_field (pw->pw_shell, ":\n") == -1)) {
+		return -1;
+	}
+
 	return (putpwent (pw, file) == -1) ? -1 : 0;
 }
 
@@ -99,20 +82,29 @@ static struct commonio_db passwd_db = {
 #ifdef WITH_SELINUX
 	NULL,			/* scontext */
 #endif
+	0644,                   /* st_mode */
+	0,                      /* st_uid */
+	0,                      /* st_gid */
 	NULL,			/* head */
 	NULL,			/* tail */
 	NULL,			/* cursor */
-	0,			/* changed */
-	0,			/* isopen */
-	0,			/* locked */
-	0			/* readonly */
+	false,			/* changed */
+	false,			/* isopen */
+	false,			/* locked */
+	false,			/* readonly */
+	false			/* setname */
 };
 
-int pw_name (const char *filename)
+int pw_setdbname (const char *filename)
 {
 	return commonio_setname (&passwd_db, filename);
 }
 
+/*@observer@*/const char *pw_dbname (void)
+{
+	return passwd_db.filename;
+}
+
 int pw_lock (void)
 {
 	return commonio_lock (&passwd_db);
@@ -123,12 +115,12 @@ int pw_open (int mode)
 	return commonio_open (&passwd_db, mode);
 }
 
-const struct passwd *pw_locate (const char *name)
+/*@observer@*/ /*@null@*/const struct passwd *pw_locate (const char *name)
 {
 	return commonio_locate (&passwd_db, name);
 }
 
-const struct passwd *pw_locate_uid (uid_t uid)
+/*@observer@*/ /*@null@*/const struct passwd *pw_locate_uid (uid_t uid)
 {
 	const struct passwd *pwd;
 
@@ -155,7 +147,7 @@ int pw_rewind (void)
 	return commonio_rewind (&passwd_db);
 }
 
-const struct passwd *pw_next (void)
+/*@observer@*/ /*@null@*/const struct passwd *pw_next (void)
 {
 	return commonio_next (&passwd_db);
 }
@@ -170,7 +162,7 @@ int pw_unlock (void)
 	return commonio_unlock (&passwd_db);
 }
 
-struct commonio_entry *__pw_get_head (void)
+/*@null@*/struct commonio_entry *__pw_get_head (void)
 {
 	return passwd_db.head;
 }

lib/pwio.h

@@ -1,47 +1,32 @@
 /*
- * Copyright (c) 1990 - 1994, Julianne Frances Haugh
- * Copyright (c) 1996 - 2000, Marek Michałkiewicz
- * Copyright (c) 2005       , Michał Moskal
- * Copyright (c) 2005       , Tomasz Kłoczko
- * Copyright (c) 2008       , Nicolas François
- * All rights reserved.
+ * SPDX-FileCopyrightText: 1990 - 1994, Julianne Frances Haugh
+ * SPDX-FileCopyrightText: 1996 - 2000, Marek Michałkiewicz
+ * SPDX-FileCopyrightText: 2005       , Michał Moskal
+ * SPDX-FileCopyrightText: 2005       , Tomasz Kłoczko
+ * SPDX-FileCopyrightText: 2008       , Nicolas François
  *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- * 1. Redistributions of source code must retain the above copyright
- *    notice, this list of conditions and the following disclaimer.
- * 2. Redistributions in binary form must reproduce the above copyright
- *    notice, this list of conditions and the following disclaimer in the
- *    documentation and/or other materials provided with the distribution.
- * 3. The name of the copyright holders or contributors may not be used to
- *    endorse or promote products derived from this software without
- *    specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
- * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
- * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
- * PARTICULAR PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE COPYRIGHT
- * HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
- * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
- * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
- * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
- * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
- * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
- * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ * SPDX-License-Identifier: BSD-3-Clause
  */
 
+/* $Id$ */
+#ifndef _PWIO_H
+#define _PWIO_H
+
+#include <sys/types.h>
 #include <pwd.h>
+
 extern int pw_close (void);
-extern const struct passwd *pw_locate (const char *);
-extern const struct passwd *pw_locate_uid (uid_t uid);
+extern /*@observer@*/ /*@null@*/const struct passwd *pw_locate (const char *name);
+extern /*@observer@*/ /*@null@*/const struct passwd *pw_locate_uid (uid_t uid);
 extern int pw_lock (void);
-extern int pw_name (const char *);
-extern const struct passwd *pw_next (void);
-extern int pw_open (int);
-extern int pw_remove (const char *);
+extern int pw_setdbname (const char *filename);
+extern /*@observer@*/const char *pw_dbname (void);
+extern /*@observer@*/ /*@null@*/const struct passwd *pw_next (void);
+extern int pw_open (int mode);
+extern int pw_remove (const char *name);
 extern int pw_rewind (void);
 extern int pw_unlock (void);
-extern int pw_update (const struct passwd *);
+extern int pw_update (const struct passwd *pw);
 extern int pw_sort (void);
 
+#endif

lib/pwmem.c

@@ -1,63 +1,85 @@
 /*
- * Copyright (c) 1990 - 1994, Julianne Frances Haugh
- * Copyright (c) 1996 - 2000, Marek Michałkiewicz
- * Copyright (c) 2001       , Michał Moskal
- * Copyright (c) 2003 - 2005, Tomasz Kłoczko
- * Copyright (c) 2007       , Nicolas François
- * All rights reserved.
+ * SPDX-FileCopyrightText: 1990 - 1994, Julianne Frances Haugh
+ * SPDX-FileCopyrightText: 1996 - 2000, Marek Michałkiewicz
+ * SPDX-FileCopyrightText: 2001       , Michał Moskal
+ * SPDX-FileCopyrightText: 2003 - 2005, Tomasz Kłoczko
+ * SPDX-FileCopyrightText: 2007 - 2013, Nicolas François
  *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- * 1. Redistributions of source code must retain the above copyright
- *    notice, this list of conditions and the following disclaimer.
- * 2. Redistributions in binary form must reproduce the above copyright
- *    notice, this list of conditions and the following disclaimer in the
- *    documentation and/or other materials provided with the distribution.
- * 3. The name of the copyright holders or contributors may not be used to
- *    endorse or promote products derived from this software without
- *    specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
- * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
- * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
- * PARTICULAR PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE COPYRIGHT
- * HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
- * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
- * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
- * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
- * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
- * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
- * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ * SPDX-License-Identifier: BSD-3-Clause
  */
 
 #include <config.h>
 
 #ident "$Id$"
 
-#include "prototypes.h"
-#include "defines.h"
-#include <pwd.h>
 #include <stdio.h>
+#include "defines.h"
+#include "prototypes.h"
 #include "pwio.h"
 
-struct passwd *__pw_dup (const struct passwd *pwent)
+/*@null@*/ /*@only@*/struct passwd *__pw_dup (const struct passwd *pwent)
 {
 	struct passwd *pw;
 
-	if (!(pw = (struct passwd *) malloc (sizeof *pw)))
+	pw = (struct passwd *) malloc (sizeof *pw);
+	if (NULL == pw) {
 		return NULL;
-	*pw = *pwent;
-	if (!(pw->pw_name = strdup (pwent->pw_name)))
+	}
+	/* The libc might define other fields. They won't be copied. */
+	memset (pw, 0, sizeof *pw);
+	pw->pw_uid = pwent->pw_uid;
+	pw->pw_gid = pwent->pw_gid;
+	/*@-mustfreeonly@*/
+	pw->pw_name = strdup (pwent->pw_name);
+	/*@=mustfreeonly@*/
+	if (NULL == pw->pw_name) {
+		pw_free(pw);
 		return NULL;
-	if (!(pw->pw_passwd = strdup (pwent->pw_passwd)))
+	}
+	/*@-mustfreeonly@*/
+	pw->pw_passwd = strdup (pwent->pw_passwd);
+	/*@=mustfreeonly@*/
+	if (NULL == pw->pw_passwd) {
+		pw_free(pw);
 		return NULL;
-	if (!(pw->pw_gecos = strdup (pwent->pw_gecos)))
+	}
+	/*@-mustfreeonly@*/
+	pw->pw_gecos = strdup (pwent->pw_gecos);
+	/*@=mustfreeonly@*/
+	if (NULL == pw->pw_gecos) {
+		pw_free(pw);
 		return NULL;
-	if (!(pw->pw_dir = strdup (pwent->pw_dir)))
+	}
+	/*@-mustfreeonly@*/
+	pw->pw_dir = strdup (pwent->pw_dir);
+	/*@=mustfreeonly@*/
+	if (NULL == pw->pw_dir) {
+		pw_free(pw);
 		return NULL;
-	if (!(pw->pw_shell = strdup (pwent->pw_shell)))
+	}
+	/*@-mustfreeonly@*/
+	pw->pw_shell = strdup (pwent->pw_shell);
+	/*@=mustfreeonly@*/
+	if (NULL == pw->pw_shell) {
+		pw_free(pw);
 		return NULL;
+	}
+
 	return pw;
 }
 
+void pw_free (/*@out@*/ /*@only@*/struct passwd *pwent)
+{
+	if (pwent != NULL) {
+		free (pwent->pw_name);
+		if (pwent->pw_passwd) {
+			memzero (pwent->pw_passwd, strlen (pwent->pw_passwd));
+			free (pwent->pw_passwd);
+		}
+		free (pwent->pw_gecos);
+		free (pwent->pw_dir);
+		free (pwent->pw_shell);
+		free (pwent);
+	}
+}
+

lib/run_part.c

@@ -0,0 +1,104 @@
+#include <dirent.h>
+#include <errno.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <sys/stat.h>
+#include <sys/types.h>
+#include <sys/wait.h>
+#include <unistd.h>
+#include <lib/prototypes.h>
+#include "run_part.h"
+#include "shadowlog_internal.h"
+
+int run_part (char *script_path, const char *name, const char *action)
+{
+	int pid;
+	int wait_status;
+	int pid_status;
+	char *args[] = { script_path, NULL };
+
+	pid=fork();
+	if (pid==-1) {
+		perror ("Could not fork");
+		return 1;
+	}
+	if (pid==0) {
+		setenv ("ACTION",action,1);
+		setenv ("SUBJECT",name,1);
+		execv (script_path,args);
+		perror ("execv");
+		exit(1);
+	}
+
+	pid_status = wait (&wait_status);
+	if (pid_status == pid) {
+		return (wait_status);
+	}
+
+	perror ("waitpid");
+	return (1);
+}
+
+int run_parts (const char *directory, const char *name, const char *action)
+{
+	struct dirent **namelist;
+	int scanlist;
+	int n;
+	int execute_result = 0;
+
+	scanlist = scandir (directory, &namelist, 0, alphasort);
+	if (scanlist<=0) {
+		return (0);
+	}
+
+	for (n=0; n<scanlist; n++) {
+		int path_length;
+		struct stat sb;
+
+		path_length=strlen(directory) + strlen(namelist[n]->d_name) + 2;
+		char *s = (char*)malloc(path_length);
+		if (!s) {
+			printf ("could not allocate memory\n");
+			for (; n<scanlist; n++) {
+				free (namelist[n]);
+			}
+			free (namelist);
+			return (1);
+		}
+		snprintf (s, path_length, "%s/%s", directory, namelist[n]->d_name);
+
+		execute_result = 0;
+		if (stat (s, &sb) == -1) {
+			perror ("stat");
+			free (s);
+			for (; n<scanlist; n++) {
+				free (namelist[n]);
+			}
+			free (namelist);
+			return (1);
+		}
+
+		if (S_ISREG (sb.st_mode) || S_ISLNK (sb.st_mode)) {
+			execute_result = run_part (s, name, action);
+		}
+
+		free (s);
+
+		if (execute_result!=0) {
+			fprintf (shadow_logfd,
+				"%s: did not exit cleanly.\n",
+			    namelist[n]->d_name);
+			for (; n<scanlist; n++) {
+				free (namelist[n]);
+			}
+			break;
+		}
+
+		free (namelist[n]);
+	}
+	free (namelist);
+
+	return (execute_result);
+}
+

lib/run_part.h

@@ -0,0 +1,7 @@
+#ifndef _RUN_PART_H
+#define _RUN_PART_H
+
+int run_part (char *script_path, const char *name, const char *action);
+int run_parts (const char *directory, const char *name, const char *action);
+
+#endif /* _RUN_PART_H */

lib/selinux.c

@@ -0,0 +1,210 @@
+/*
+ * SPDX-FileCopyrightText: 2011       , Peter Vrabec <pvrabec@redhat.com>
+ *
+ * SPDX-License-Identifier: BSD-3-Clause
+ */
+
+#include <config.h>
+
+#ifdef WITH_SELINUX
+
+#include <stdio.h>
+#include "defines.h"
+
+#include <selinux/selinux.h>
+#include <selinux/label.h>
+#include "prototypes.h"
+
+#include "shadowlog_internal.h"
+
+static bool selinux_checked = false;
+static bool selinux_enabled;
+static /*@null@*/struct selabel_handle *selabel_hnd = NULL;
+
+static void cleanup(void)
+{
+	if (selabel_hnd) {
+		selabel_close(selabel_hnd);
+		selabel_hnd = NULL;
+	}
+}
+
+void reset_selinux_handle (void)
+{
+    cleanup();
+}
+
+/*
+ * set_selinux_file_context - Set the security context before any file or
+ *                            directory creation.
+ *
+ *	set_selinux_file_context () should be called before any creation
+ *	of file, symlink, directory, ...
+ *
+ *	Callers may have to Reset SELinux to create files with default
+ *	contexts with reset_selinux_file_context
+ */
+int set_selinux_file_context (const char *dst_name, mode_t mode)
+{
+	if (!selinux_checked) {
+		selinux_enabled = is_selinux_enabled () > 0;
+		selinux_checked = true;
+	}
+
+	if (selinux_enabled) {
+		/* Get the default security context for this file */
+
+		/*@null@*/char *fcontext_raw = NULL;
+		int r;
+
+		if (selabel_hnd == NULL) {
+			selabel_hnd = selabel_open(SELABEL_CTX_FILE, NULL, 0);
+			if (selabel_hnd == NULL) {
+				return security_getenforce () != 0;
+			}
+			(void) atexit(cleanup);
+		}
+
+		r = selabel_lookup_raw(selabel_hnd, &fcontext_raw, dst_name, mode);
+		if (r < 0) {
+			/* No context specified for the searched path */
+			if (errno == ENOENT) {
+				return 0;
+			}
+
+			return security_getenforce () != 0;
+		}
+
+		/* Set the security context for the next created file */
+		r = setfscreatecon_raw (fcontext_raw);
+		freecon (fcontext_raw);
+		if (r < 0) {
+			return security_getenforce () != 0;
+		}
+	}
+	return 0;
+}
+
+/*
+ * reset_selinux_file_context - Reset the security context to the default
+ *                              policy behavior
+ *
+ *	reset_selinux_file_context () should be called after the context
+ *	was changed with set_selinux_file_context ()
+ */
+int reset_selinux_file_context (void)
+{
+	if (!selinux_checked) {
+		selinux_enabled = is_selinux_enabled () > 0;
+		selinux_checked = true;
+	}
+	if (selinux_enabled) {
+		if (setfscreatecon_raw (NULL) != 0) {
+			return security_getenforce () != 0;
+		}
+	}
+	return 0;
+}
+
+/*
+ *  Log callback for libselinux internal error reporting.
+ */
+format_attr(printf, 2, 3)
+static int selinux_log_cb (int type, const char *fmt, ...) {
+	va_list ap;
+	char *buf;
+	int r;
+#ifdef WITH_AUDIT
+	static int selinux_audit_fd = -2;
+#endif
+
+	va_start (ap, fmt);
+	r = vasprintf (&buf, fmt, ap);
+	va_end (ap);
+
+	if (r < 0) {
+		return 0;
+	}
+
+#ifdef WITH_AUDIT
+	if (-2 == selinux_audit_fd) {
+		selinux_audit_fd = audit_open ();
+
+		if (-1 == selinux_audit_fd) {
+			/* You get these only when the kernel doesn't have
+			 * audit compiled in. */
+			if (   (errno != EINVAL)
+			    && (errno != EPROTONOSUPPORT)
+			    && (errno != EAFNOSUPPORT)) {
+
+			    (void) fputs (_("Cannot open audit interface.\n"),
+			              shadow_logfd);
+			    SYSLOG ((LOG_WARN, "Cannot open audit interface."));
+			}
+		}
+	}
+
+	if (-1 != selinux_audit_fd) {
+		if (SELINUX_AVC == type) {
+			if (audit_log_user_avc_message (selinux_audit_fd,
+			    AUDIT_USER_AVC, buf, NULL, NULL,
+			    NULL, 0) > 0) {
+				goto skip_syslog;
+			}
+		} else if (SELINUX_ERROR == type) {
+			if (audit_log_user_avc_message (selinux_audit_fd,
+			    AUDIT_USER_SELINUX_ERR, buf, NULL, NULL,
+			    NULL, 0) > 0) {
+				goto skip_syslog;
+			}
+		}
+	}
+#endif
+
+	SYSLOG ((LOG_WARN, "libselinux: %s", buf));
+
+skip_syslog:
+	free (buf);
+
+	return 0;
+}
+
+/*
+ * check_selinux_permit - Check whether SELinux grants the given
+ *                        operation
+ *
+ *   Parameter is the SELinux permission name, e.g. rootok
+ *
+ *   Returns 0 when permission is granted
+ *                  or something failed but running in
+ *                  permissive mode
+ */
+int check_selinux_permit (const char *perm_name)
+{
+	char *user_context_raw;
+	int r;
+
+	if (0 == is_selinux_enabled ()) {
+		return 0;
+	}
+
+	selinux_set_callback (SELINUX_CB_LOG, (union selinux_callback) selinux_log_cb);
+
+	if (getprevcon_raw (&user_context_raw) != 0) {
+		fprintf (shadow_logfd,
+		    _("%s: can not get previous SELinux process context: %s\n"),
+		    shadow_progname, strerror (errno));
+		SYSLOG ((LOG_WARN,
+		    "can not get previous SELinux process context: %s",
+		    strerror (errno)));
+		return (security_getenforce () != 0);
+	}
+
+	r = selinux_check_access (user_context_raw, user_context_raw, "passwd", perm_name, NULL);
+	freecon (user_context_raw);
+	return r;
+}
+
+#else				/* !WITH_SELINUX */
+extern int errno;		/* warning: ANSI C forbids an empty source file */
+#endif				/* !WITH_SELINUX */

lib/semanage.c

@@ -0,0 +1,358 @@
+/*
+ * SPDX-FileCopyrightText: 2010       , Jakub Hrozek <jhrozek@redhat.com>
+ * SPDX-FileCopyrightText: 2011       , Peter Vrabec <pvrabec@redhat.com>
+ *
+ * SPDX-License-Identifier: BSD-3-Clause
+ */
+
+#include <config.h>
+
+#ifdef WITH_SELINUX
+
+#include "defines.h"
+
+#ifndef _GNU_SOURCE
+#define _GNU_SOURCE
+#endif
+#include <stdio.h>
+#include <stdarg.h>
+#include <selinux/selinux.h>
+#include <semanage/semanage.h>
+#include "prototypes.h"
+
+#include "shadowlog_internal.h"
+
+#ifndef DEFAULT_SERANGE
+#define DEFAULT_SERANGE "s0"
+#endif
+
+
+format_attr(printf, 3, 4)
+static void semanage_error_callback (unused void *varg,
+                                     semanage_handle_t *handle,
+                                     const char *fmt, ...)
+{
+	int ret;
+	char * message = NULL;
+	va_list ap;
+
+
+	va_start (ap, fmt);
+	ret = vasprintf (&message, fmt, ap);
+	va_end (ap);
+	if (ret < 0) {
+		/* ENOMEM */
+		return;
+	}
+
+	switch (semanage_msg_get_level (handle)) {
+	case SEMANAGE_MSG_ERR:
+	case SEMANAGE_MSG_WARN:
+		fprintf (shadow_logfd, _("[libsemanage]: %s\n"), message);
+		break;
+	case SEMANAGE_MSG_INFO:
+		/* nop */
+		break;
+	}
+
+	free (message);
+}
+
+
+static semanage_handle_t *semanage_init (void)
+{
+	int ret;
+	semanage_handle_t *handle = NULL;
+
+	handle = semanage_handle_create ();
+	if (NULL == handle) {
+		fprintf (shadow_logfd,
+		         _("Cannot create SELinux management handle\n"));
+		return NULL;
+	}
+
+	semanage_msg_set_callback (handle, semanage_error_callback, NULL);
+
+	ret = semanage_is_managed (handle);
+	if (ret != 1) {
+		fprintf (shadow_logfd, _("SELinux policy not managed\n"));
+		goto fail;
+	}
+
+	ret = semanage_access_check (handle);
+	if (ret < SEMANAGE_CAN_READ) {
+		fprintf (shadow_logfd, _("Cannot read SELinux policy store\n"));
+		goto fail;
+	}
+
+	ret = semanage_connect (handle);
+	if (ret != 0) {
+		fprintf (shadow_logfd,
+		         _("Cannot establish SELinux management connection\n"));
+		goto fail;
+	}
+
+	ret = semanage_begin_transaction (handle);
+	if (ret != 0) {
+		fprintf (shadow_logfd, _("Cannot begin SELinux transaction\n"));
+		goto fail;
+	}
+
+	return handle;
+
+fail:
+	semanage_handle_destroy (handle);
+	return NULL;
+}
+
+
+static int semanage_user_mod (semanage_handle_t *handle,
+                              semanage_seuser_key_t *key,
+                              const char *login_name,
+                              const char *seuser_name)
+{
+	int ret;
+	semanage_seuser_t *seuser = NULL;
+
+	semanage_seuser_query (handle, key, &seuser);
+	if (NULL == seuser) {
+		fprintf (shadow_logfd,
+		         _("Could not query seuser for %s\n"), login_name);
+		ret = 1;
+		goto done;
+	}
+
+	ret = semanage_seuser_set_mlsrange (handle, seuser, DEFAULT_SERANGE);
+	if (ret != 0) {
+		fprintf (shadow_logfd,
+		         _("Could not set serange for %s\n"), login_name);
+		ret = 1;
+		goto done;
+	}
+
+	ret = semanage_seuser_set_sename (handle, seuser, seuser_name);
+	if (ret != 0) {
+		fprintf (shadow_logfd,
+		         _("Could not set sename for %s\n"),
+		         login_name);
+		ret = 1;
+		goto done;
+	}
+
+	ret = semanage_seuser_modify_local (handle, key, seuser);
+	if (ret != 0) {
+		fprintf (shadow_logfd,
+		         _("Could not modify login mapping for %s\n"),
+		         login_name);
+		ret = 1;
+		goto done;
+	}
+
+	ret = 0;
+done:
+	semanage_seuser_free (seuser);
+	return ret;
+}
+
+
+static int semanage_user_add (semanage_handle_t *handle,
+                             semanage_seuser_key_t *key,
+                             const char *login_name,
+                             const char *seuser_name)
+{
+	int ret;
+	semanage_seuser_t *seuser = NULL;
+
+	ret = semanage_seuser_create (handle, &seuser);
+	if (ret != 0) {
+		fprintf (shadow_logfd,
+		         _("Cannot create SELinux login mapping for %s\n"),
+		         login_name);
+		ret = 1;
+		goto done;
+	}
+
+	ret = semanage_seuser_set_name (handle, seuser, login_name);
+	if (ret != 0) {
+		fprintf (shadow_logfd, _("Could not set name for %s\n"), login_name);
+		ret = 1;
+		goto done;
+	}
+
+	ret = semanage_seuser_set_mlsrange (handle, seuser, DEFAULT_SERANGE);
+	if (ret != 0) {
+		fprintf (shadow_logfd,
+		         _("Could not set serange for %s\n"),
+		         login_name);
+		ret = 1;
+		goto done;
+	}
+
+	ret = semanage_seuser_set_sename (handle, seuser, seuser_name);
+	if (ret != 0) {
+		fprintf (shadow_logfd,
+		         _("Could not set SELinux user for %s\n"),
+		         login_name);
+		ret = 1;
+		goto done;
+	}
+
+	ret = semanage_seuser_modify_local (handle, key, seuser);
+	if (ret != 0) {
+		fprintf (shadow_logfd,
+		         _("Could not add login mapping for %s\n"),
+		         login_name);
+		ret = 1;
+		goto done;
+	}
+
+	ret = 0;
+done:
+	semanage_seuser_free (seuser);
+	return ret;
+}
+
+
+int set_seuser (const char *login_name, const char *seuser_name)
+{
+	semanage_handle_t *handle = NULL;
+	semanage_seuser_key_t *key = NULL;
+	int ret;
+	int seuser_exists = 0;
+
+	if (NULL == seuser_name) {
+		/* don't care, just let system pick the defaults */
+		return 0;
+	}
+
+	handle = semanage_init ();
+	if (NULL == handle) {
+		fprintf (shadow_logfd, _("Cannot init SELinux management\n"));
+		ret = 1;
+		goto done;
+	}
+
+	ret = semanage_seuser_key_create (handle, login_name, &key);
+	if (ret != 0) {
+		fprintf (shadow_logfd, _("Cannot create SELinux user key\n"));
+		ret = 1;
+		goto done;
+	}
+
+	ret = semanage_seuser_exists (handle, key, &seuser_exists);
+	if (ret < 0) {
+		fprintf (shadow_logfd, _("Cannot verify the SELinux user\n"));
+		ret = 1;
+		goto done;
+	}
+
+	if (0 != seuser_exists) {
+		ret = semanage_user_mod (handle, key, login_name, seuser_name);
+		if (ret != 0) {
+			fprintf (shadow_logfd,
+			         _("Cannot modify SELinux user mapping\n"));
+			ret = 1;
+			goto done;
+		}
+	} else {
+		ret = semanage_user_add (handle, key, login_name, seuser_name);
+		if (ret != 0) {
+			fprintf (shadow_logfd,
+			         _("Cannot add SELinux user mapping\n"));
+			ret = 1;
+			goto done;
+		}
+	}
+
+	ret = semanage_commit (handle);
+	if (ret < 0) {
+		fprintf (shadow_logfd, _("Cannot commit SELinux transaction\n"));
+		ret = 1;
+		goto done;
+	}
+
+	ret = 0;
+	reset_selinux_handle();
+
+done:
+	semanage_seuser_key_free (key);
+	semanage_handle_destroy (handle);
+	return ret;
+}
+
+
+int del_seuser (const char *login_name)
+{
+	semanage_handle_t *handle = NULL;
+	semanage_seuser_key_t *key = NULL;
+	int ret;
+	int exists = 0;
+
+	handle = semanage_init ();
+	if (NULL == handle) {
+		fprintf (shadow_logfd, _("Cannot init SELinux management\n"));
+		ret = 1;
+		goto done;
+	}
+
+	ret = semanage_seuser_key_create (handle, login_name, &key);
+	if (ret != 0) {
+		fprintf (shadow_logfd, _("Cannot create SELinux user key\n"));
+		ret = 1;
+		goto done;
+	}
+
+	ret = semanage_seuser_exists (handle, key, &exists);
+	if (ret < 0) {
+		fprintf (shadow_logfd, _("Cannot verify the SELinux user\n"));
+		ret = 1;
+		goto done;
+	}
+
+	if (0 == exists) {
+		fprintf (shadow_logfd,
+		         _("Login mapping for %s is not defined, OK if default mapping was used\n"),
+		         login_name);
+		ret = 0;  /* probably default mapping */
+		goto done;
+	}
+
+	ret = semanage_seuser_exists_local (handle, key, &exists);
+	if (ret < 0) {
+		fprintf (shadow_logfd, _("Cannot verify the SELinux user\n"));
+		ret = 1;
+		goto done;
+	}
+
+	if (0 == exists) {
+		fprintf (shadow_logfd,
+		         _("Login mapping for %s is defined in policy, cannot be deleted\n"),
+		         login_name);
+		ret = 0; /* Login mapping defined in policy can't be deleted */
+		goto done;
+	}
+
+	ret = semanage_seuser_del_local (handle, key);
+	if (ret != 0) {
+		fprintf (shadow_logfd,
+		         _("Could not delete login mapping for %s"),
+		         login_name);
+		ret = 1;
+		goto done;
+	}
+
+	ret = semanage_commit (handle);
+	if (ret < 0) {
+		fprintf (shadow_logfd, _("Cannot commit SELinux transaction\n"));
+		ret = 1;
+		goto done;
+	}
+
+	ret = 0;
+done:
+	semanage_handle_destroy (handle);
+	return ret;
+}
+#else				/* !WITH_SELINUX */
+extern int errno;		/* warning: ANSI C forbids an empty source file */
+#endif				/* !WITH_SELINUX */

lib/sgetgrent.c

@@ -1,33 +1,10 @@
 /*
- * Copyright (c) 1990 - 1994, Julianne Frances Haugh
- * Copyright (c) 1996 - 1998, Marek Michałkiewicz
- * Copyright (c) 2005       , Tomasz Kłoczko
- * Copyright (c) 2008       , Nicolas François
- * All rights reserved.
+ * SPDX-FileCopyrightText: 1990 - 1994, Julianne Frances Haugh
+ * SPDX-FileCopyrightText: 1996 - 1998, Marek Michałkiewicz
+ * SPDX-FileCopyrightText: 2005       , Tomasz Kłoczko
+ * SPDX-FileCopyrightText: 2008       , Nicolas François
  *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- * 1. Redistributions of source code must retain the above copyright
- *    notice, this list of conditions and the following disclaimer.
- * 2. Redistributions in binary form must reproduce the above copyright
- *    notice, this list of conditions and the following disclaimer in the
- *    documentation and/or other materials provided with the distribution.
- * 3. The name of the copyright holders or contributors may not be used to
- *    endorse or promote products derived from this software without
- *    specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
- * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
- * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
- * PARTICULAR PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE COPYRIGHT
- * HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
- * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
- * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
- * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
- * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
- * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
- * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ * SPDX-License-Identifier: BSD-3-Clause
  */
 
 #include <config.h>
@@ -35,6 +12,7 @@
 #ident "$Id$"
 
 #include <stdio.h>
+#include <sys/types.h>
 #include <grp.h>
 #include "defines.h"
 #include "prototypes.h"
@@ -87,10 +65,12 @@ static char **list (char *s)
 		if (!s || s[0] == '\0')
 			break;
 		members[i++] = s;
-		while (*s && *s != ',')
+		while (('\0' != *s) && (',' != *s)) {
 			s++;
-		if (*s)
+		}
+		if ('\0' != *s) {
 			*s++ = '\0';
+		}
 	}
 	members[i] = (char *) 0;
 	return members;
@@ -120,22 +100,32 @@ struct group *sgetgrent (const char *buf)
 	}
 	strcpy (grpbuf, buf);
 
-	if ((cp = strrchr (grpbuf, '\n')))
+	cp = strrchr (grpbuf, '\n');
+	if (NULL != cp) {
 		*cp = '\0';
-
-	for (cp = grpbuf, i = 0; i < NFIELDS && cp; i++) {
-		grpfields[i] = cp;
-		if ((cp = strchr (cp, ':')))
-			*cp++ = 0;
 	}
-	if (i < (NFIELDS - 1) || *grpfields[2] == '\0')
-		return 0;
+
+	for (cp = grpbuf, i = 0; (i < NFIELDS) && (NULL != cp); i++) {
+		grpfields[i] = cp;
+		cp = strchr (cp, ':');
+		if (NULL != cp) {
+			*cp = '\0';
+			cp++;
+		}
+	}
+	if (i < (NFIELDS - 1) || *grpfields[2] == '\0' || cp != NULL) {
+		return (struct group *) 0;
+	}
 	grent.gr_name = grpfields[0];
 	grent.gr_passwd = grpfields[1];
-	grent.gr_gid = atoi (grpfields[2]);
+	if (get_gid (grpfields[2], &grent.gr_gid) == 0) {
+		return (struct group *) 0;
+	}
 	grent.gr_mem = list (grpfields[3]);
-	if (!grent.gr_mem)
+	if (NULL == grent.gr_mem) {
 		return (struct group *) 0;	/* out of memory */
+	}
 
 	return &grent;
 }
+

lib/sgetpwent.c

@@ -1,33 +1,10 @@
 /*
- * Copyright (c) 1989 - 1994, Julianne Frances Haugh
- * Copyright (c) 1996 - 1998, Marek Michałkiewicz
- * Copyright (c) 2003 - 2005, Tomasz Kłoczko
- * Copyright (c) 2008       , Nicolas François
- * All rights reserved.
+ * SPDX-FileCopyrightText: 1989 - 1994, Julianne Frances Haugh
+ * SPDX-FileCopyrightText: 1996 - 1998, Marek Michałkiewicz
+ * SPDX-FileCopyrightText: 2003 - 2005, Tomasz Kłoczko
+ * SPDX-FileCopyrightText: 2008       , Nicolas François
  *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- * 1. Redistributions of source code must retain the above copyright
- *    notice, this list of conditions and the following disclaimer.
- * 2. Redistributions in binary form must reproduce the above copyright
- *    notice, this list of conditions and the following disclaimer in the
- *    documentation and/or other materials provided with the distribution.
- * 3. The name of the copyright holders or contributors may not be used to
- *    endorse or promote products derived from this software without
- *    specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
- * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
- * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
- * PARTICULAR PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE COPYRIGHT
- * HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
- * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
- * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
- * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
- * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
- * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
- * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ * SPDX-License-Identifier: BSD-3-Clause
  */
 
 #include <config.h>
@@ -58,9 +35,8 @@ struct passwd *sgetpwent (const char *buf)
 {
 	static struct passwd pwent;
 	static char pwdbuf[1024];
-	register int i;
-	register char *cp;
-	char *ep;
+	int i;
+	char *cp;
 	char *fields[NFIELDS];
 
 	/*
@@ -77,15 +53,23 @@ struct passwd *sgetpwent (const char *buf)
 	 * field.  The fields are converted into NUL terminated strings.
 	 */
 
-	for (cp = pwdbuf, i = 0; i < NFIELDS && cp; i++) {
+	for (cp = pwdbuf, i = 0; (i < NFIELDS) && (NULL != cp); i++) {
 		fields[i] = cp;
-		while (*cp && *cp != ':')
-			++cp;
+		while (('\0' != *cp) && (':' != *cp)) {
+			cp++;
+		}
 
-		if (*cp)
-			*cp++ = '\0';
-		else
-			cp = 0;
+		if ('\0' != *cp) {
+			*cp = '\0';
+			cp++;
+		} else {
+			cp = NULL;
+		}
+	}
+
+	/* something at the end, columns over shot */
+	if ( cp != NULL ) {
+		return( NULL );
 	}
 
 	/*
@@ -94,7 +78,7 @@ struct passwd *sgetpwent (const char *buf)
 	 */
 
 	if (i != NFIELDS || *fields[2] == '\0' || *fields[3] == '\0')
-		return 0;
+		return NULL;
 
 	/*
 	 * Each of the fields is converted the appropriate data type
@@ -105,13 +89,11 @@ struct passwd *sgetpwent (const char *buf)
 
 	pwent.pw_name = fields[0];
 	pwent.pw_passwd = fields[1];
-	if (fields[2][0] == '\0' ||
-	    ((pwent.pw_uid = strtol (fields[2], &ep, 10)) == 0 && *ep)) {
-		return 0;
+	if (get_uid (fields[2], &pwent.pw_uid) == 0) {
+		return NULL;
 	}
-	if (fields[3][0] == '\0' ||
-	    ((pwent.pw_gid = strtol (fields[3], &ep, 10)) == 0 && *ep)) {
-		return 0;
+	if (get_gid (fields[3], &pwent.pw_gid) == 0) {
+		return NULL;
 	}
 	pwent.pw_gecos = fields[4];
 	pwent.pw_dir = fields[5];
@@ -119,3 +101,4 @@ struct passwd *sgetpwent (const char *buf)
 
 	return &pwent;
 }
+

lib/sgetspent.c

@@ -1,36 +1,17 @@
 /*
- * Copyright (c) 1989 - 1994, Julianne Frances Haugh
- * Copyright (c) 1996 - 1998, Marek Michałkiewicz
- * Copyright (c) 2003 - 2005, Tomasz Kłoczko
- * All rights reserved.
+ * SPDX-FileCopyrightText: 1989 - 1994, Julianne Frances Haugh
+ * SPDX-FileCopyrightText: 1996 - 1998, Marek Michałkiewicz
+ * SPDX-FileCopyrightText: 2003 - 2005, Tomasz Kłoczko
+ * SPDX-FileCopyrightText: 2009       , Nicolas François
  *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- * 1. Redistributions of source code must retain the above copyright
- *    notice, this list of conditions and the following disclaimer.
- * 2. Redistributions in binary form must reproduce the above copyright
- *    notice, this list of conditions and the following disclaimer in the
- *    documentation and/or other materials provided with the distribution.
- * 3. The name of the copyright holders or contributors may not be used to
- *    endorse or promote products derived from this software without
- *    specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
- * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
- * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
- * PARTICULAR PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE COPYRIGHT
- * HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
- * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
- * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
- * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
- * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
- * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
- * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ * SPDX-License-Identifier: BSD-3-Clause
  */
 
 #include <config.h>
 
+/* Newer versions of Linux libc already have shadow support.  */
+#ifndef HAVE_SGETSPENT
+
 #ident "$Id$"
 
 #include <sys/types.h>
@@ -48,7 +29,6 @@ struct spwd *sgetspent (const char *string)
 	static struct spwd spwd;
 	char *fields[FIELDS];
 	char *cp;
-	char *cpp;
 	int i;
 
 	/*
@@ -56,32 +36,41 @@ struct spwd *sgetspent (const char *string)
 	 * have to do that to our private copy.
 	 */
 
-	if (strlen (string) >= sizeof spwbuf)
+	if (strlen (string) >= sizeof spwbuf) {
 		return 0;	/* fail if too long */
+	}
 	strcpy (spwbuf, string);
 
-	if ((cp = strrchr (spwbuf, '\n')))
+	cp = strrchr (spwbuf, '\n');
+	if (NULL != cp) {
 		*cp = '\0';
+	}
 
 	/*
 	 * Tokenize the string into colon separated fields.  Allow up to
 	 * FIELDS different fields.
 	 */
 
-	for (cp = spwbuf, i = 0; *cp && i < FIELDS; i++) {
+	for (cp = spwbuf, i = 0; ('\0' != *cp) && (i < FIELDS); i++) {
 		fields[i] = cp;
-		while (*cp && *cp != ':')
+		while (('\0' != *cp) && (':' != *cp)) {
 			cp++;
+		}
 
-		if (*cp)
-			*cp++ = '\0';
+		if ('\0' != *cp) {
+			*cp = '\0';
+			cp++;
+		}
 	}
 
-	if (i == (FIELDS - 1))
+	if (i == (FIELDS - 1)) {
 		fields[i++] = cp;
+	}
 
-	if ((cp && *cp) || (i != FIELDS && i != OFIELDS))
+	if ( ((NULL != cp) && ('\0' != *cp)) ||
+	     ((i != FIELDS) && (i != OFIELDS)) ) {
 		return 0;
+	}
 
 	/*
 	 * Start populating the structure.  The fields are all in
@@ -97,28 +86,34 @@ struct spwd *sgetspent (const char *string)
 	 * incorrectly formatted number.
 	 */
 
-	if ((spwd.sp_lstchg = strtol (fields[2], &cpp, 10)) == 0 && *cpp) {
-		return 0;
-	} else if (fields[2][0] == '\0')
+	if (fields[2][0] == '\0') {
 		spwd.sp_lstchg = -1;
+	} else if (   (getlong (fields[2], &spwd.sp_lstchg) == 0)
+	           || (spwd.sp_lstchg < 0)) {
+		return 0;
+	}
 
 	/*
 	 * Get the minimum period between password changes.
 	 */
 
-	if ((spwd.sp_min = strtol (fields[3], &cpp, 10)) == 0 && *cpp) {
-		return 0;
-	} else if (fields[3][0] == '\0')
+	if (fields[3][0] == '\0') {
 		spwd.sp_min = -1;
+	} else if (   (getlong (fields[3], &spwd.sp_min) == 0)
+	           || (spwd.sp_min < 0)) {
+		return 0;
+	}
 
 	/*
 	 * Get the maximum number of days a password is valid.
 	 */
 
-	if ((spwd.sp_max = strtol (fields[4], &cpp, 10)) == 0 && *cpp) {
-		return 0;
-	} else if (fields[4][0] == '\0')
+	if (fields[4][0] == '\0') {
 		spwd.sp_max = -1;
+	} else if (   (getlong (fields[4], &spwd.sp_max) == 0)
+	           || (spwd.sp_max < 0)) {
+		return 0;
+	}
 
 	/*
 	 * If there are only OFIELDS fields (this is a SVR3.2 /etc/shadow
@@ -126,8 +121,10 @@ struct spwd *sgetspent (const char *string)
 	 */
 
 	if (i == OFIELDS) {
-		spwd.sp_warn = spwd.sp_inact = spwd.sp_expire =
-		    spwd.sp_flag = -1;
+		spwd.sp_warn   = -1;
+		spwd.sp_inact  = -1;
+		spwd.sp_expire = -1;
+		spwd.sp_flag   = SHADOW_SP_FLAG_UNSET;
 
 		return &spwd;
 	}
@@ -136,40 +133,51 @@ struct spwd *sgetspent (const char *string)
 	 * Get the number of days of password expiry warning.
 	 */
 
-	if ((spwd.sp_warn = strtol (fields[5], &cpp, 10)) == 0 && *cpp) {
-		return 0;
-	} else if (fields[5][0] == '\0')
+	if (fields[5][0] == '\0') {
 		spwd.sp_warn = -1;
+	} else if (   (getlong (fields[5], &spwd.sp_warn) == 0)
+	           || (spwd.sp_warn < 0)) {
+		return 0;
+	}
 
 	/*
 	 * Get the number of days of inactivity before an account is
 	 * disabled.
 	 */
 
-	if ((spwd.sp_inact = strtol (fields[6], &cpp, 10)) == 0 && *cpp) {
-		return 0;
-	} else if (fields[6][0] == '\0')
+	if (fields[6][0] == '\0') {
 		spwd.sp_inact = -1;
+	} else if (   (getlong (fields[6], &spwd.sp_inact) == 0)
+	           || (spwd.sp_inact < 0)) {
+		return 0;
+	}
 
 	/*
 	 * Get the number of days after the epoch before the account is
 	 * set to expire.
 	 */
 
-	if ((spwd.sp_expire = strtol (fields[7], &cpp, 10)) == 0 && *cpp) {
-		return 0;
-	} else if (fields[7][0] == '\0')
+	if (fields[7][0] == '\0') {
 		spwd.sp_expire = -1;
+	} else if (   (getlong (fields[7], &spwd.sp_expire) == 0)
+	           || (spwd.sp_expire < 0)) {
+		return 0;
+	}
 
 	/*
 	 * This field is reserved for future use.  But it isn't supposed
 	 * to have anything other than a valid integer in it.
 	 */
 
-	if ((spwd.sp_flag = strtol (fields[8], &cpp, 10)) == 0 && *cpp) {
+	if (fields[8][0] == '\0') {
+		spwd.sp_flag = SHADOW_SP_FLAG_UNSET;
+	} else if (getulong (fields[8], &spwd.sp_flag) == 0) {
 		return 0;
-	} else if (fields[8][0] == '\0')
-		spwd.sp_flag = -1;
+	}
 
 	return (&spwd);
 }
+#else
+extern int errno;		/* warning: ANSI C forbids an empty source file */
+#endif
+

lib/sgroupio.c

@@ -1,34 +1,11 @@
 /*
- * Copyright (c) 1990 - 1994, Julianne Frances Haugh
- * Copyright (c) 1996 - 2000, Marek Michałkiewicz
- * Copyright (c) 2001       , Michał Moskal
- * Copyright (c) 2005       , Tomasz Kłoczko
- * Copyright (c) 2007 - 2008, Nicolas François
- * All rights reserved.
+ * SPDX-FileCopyrightText: 1990 - 1994, Julianne Frances Haugh
+ * SPDX-FileCopyrightText: 1996 - 2000, Marek Michałkiewicz
+ * SPDX-FileCopyrightText: 2001       , Michał Moskal
+ * SPDX-FileCopyrightText: 2005       , Tomasz Kłoczko
+ * SPDX-FileCopyrightText: 2007 - 2013, Nicolas François
  *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- * 1. Redistributions of source code must retain the above copyright
- *    notice, this list of conditions and the following disclaimer.
- * 2. Redistributions in binary form must reproduce the above copyright
- *    notice, this list of conditions and the following disclaimer in the
- *    documentation and/or other materials provided with the distribution.
- * 3. The name of the copyright holders or contributors may not be used to
- *    endorse or promote products derived from this software without
- *    specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
- * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
- * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
- * PARTICULAR PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE COPYRIGHT
- * HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
- * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
- * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
- * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
- * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
- * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
- * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ * SPDX-License-Identifier: BSD-3-Clause
  */
 
 #include <config.h>
@@ -40,68 +17,129 @@
 #include "prototypes.h"
 #include "defines.h"
 #include "commonio.h"
+#include "getdef.h"
 #include "sgroupio.h"
 
-struct sgrp *__sgr_dup (const struct sgrp *sgent)
+/*@null@*/ /*@only@*/struct sgrp *__sgr_dup (const struct sgrp *sgent)
 {
 	struct sgrp *sg;
 	int i;
 
-	if (!(sg = (struct sgrp *) malloc (sizeof *sg)))
+	sg = (struct sgrp *) malloc (sizeof *sg);
+	if (NULL == sg) {
 		return NULL;
-	*sg = *sgent;
-	if (!(sg->sg_name = strdup (sgent->sg_name)))
+	}
+	/* Do the same as the other _dup function, even if we know the
+	 * structure. */
+	memset (sg, 0, sizeof *sg);
+	/*@-mustfreeonly@*/
+	sg->sg_name = strdup (sgent->sg_name);
+	/*@=mustfreeonly@*/
+	if (NULL == sg->sg_name) {
+		free (sg);
 		return NULL;
-	if (!(sg->sg_passwd = strdup (sgent->sg_passwd)))
+	}
+	/*@-mustfreeonly@*/
+	sg->sg_passwd = strdup (sgent->sg_passwd);
+	/*@=mustfreeonly@*/
+	if (NULL == sg->sg_passwd) {
+		free (sg->sg_name);
+		free (sg);
 		return NULL;
+	}
 
-	for (i = 0; sgent->sg_adm[i]; i++);
+	for (i = 0; NULL != sgent->sg_adm[i]; i++);
+	/*@-mustfreeonly@*/
 	sg->sg_adm = (char **) malloc ((i + 1) * sizeof (char *));
-	if (!sg->sg_adm)
+	/*@=mustfreeonly@*/
+	if (NULL == sg->sg_adm) {
+		free (sg->sg_passwd);
+		free (sg->sg_name);
+		free (sg);
 		return NULL;
-	for (i = 0; sgent->sg_adm[i]; i++) {
+	}
+	for (i = 0; NULL != sgent->sg_adm[i]; i++) {
 		sg->sg_adm[i] = strdup (sgent->sg_adm[i]);
-		if (!sg->sg_adm[i])
+		if (NULL == sg->sg_adm[i]) {
+			for (i = 0; NULL != sg->sg_adm[i]; i++) {
+				free (sg->sg_adm[i]);
+			}
+			free (sg->sg_adm);
+			free (sg->sg_passwd);
+			free (sg->sg_name);
+			free (sg);
 			return NULL;
+		}
 	}
 	sg->sg_adm[i] = NULL;
 
-	for (i = 0; sgent->sg_mem[i]; i++);
+	for (i = 0; NULL != sgent->sg_mem[i]; i++);
+	/*@-mustfreeonly@*/
 	sg->sg_mem = (char **) malloc ((i + 1) * sizeof (char *));
-	if (!sg->sg_mem)
+	/*@=mustfreeonly@*/
+	if (NULL == sg->sg_mem) {
+		for (i = 0; NULL != sg->sg_adm[i]; i++) {
+			free (sg->sg_adm[i]);
+		}
+		free (sg->sg_adm);
+		free (sg->sg_passwd);
+		free (sg->sg_name);
+		free (sg);
 		return NULL;
-	for (i = 0; sgent->sg_mem[i]; i++) {
+	}
+	for (i = 0; NULL != sgent->sg_mem[i]; i++) {
 		sg->sg_mem[i] = strdup (sgent->sg_mem[i]);
-		if (!sg->sg_mem[i])
+		if (NULL == sg->sg_mem[i]) {
+			for (i = 0; NULL != sg->sg_mem[i]; i++) {
+				free (sg->sg_mem[i]);
+			}
+			free (sg->sg_mem);
+			for (i = 0; NULL != sg->sg_adm[i]; i++) {
+				free (sg->sg_adm[i]);
+			}
+			free (sg->sg_adm);
+			free (sg->sg_passwd);
+			free (sg->sg_name);
+			free (sg);
 			return NULL;
+		}
 	}
 	sg->sg_mem[i] = NULL;
 
 	return sg;
 }
 
-static void *gshadow_dup (const void *ent)
+static /*@null@*/ /*@only@*/void *gshadow_dup (const void *ent)
 {
 	const struct sgrp *sg = ent;
 
 	return __sgr_dup (sg);
 }
 
-static void gshadow_free (void *ent)
+static void gshadow_free (/*@out@*/ /*@only@*/void *ent)
 {
 	struct sgrp *sg = ent;
 
-	free (sg->sg_name);
-	free (sg->sg_passwd);
-	while (*(sg->sg_adm)) {
-		free (*(sg->sg_adm));
-		sg->sg_adm++;
+	sgr_free (sg);
+}
+
+void sgr_free (/*@out@*/ /*@only@*/struct sgrp *sgent)
+{
+	size_t i;
+	free (sgent->sg_name);
+	if (NULL != sgent->sg_passwd) {
+		memzero (sgent->sg_passwd, strlen (sgent->sg_passwd));
+		free (sgent->sg_passwd);
 	}
-	while (*(sg->sg_mem)) {
-		free (*(sg->sg_mem));
-		sg->sg_mem++;
+	for (i = 0; NULL != sgent->sg_adm[i]; i++) {
+		free (sgent->sg_adm[i]);
 	}
-	free (sg);
+	free (sgent->sg_adm);
+	for (i = 0; NULL != sgent->sg_mem[i]; i++) {
+		free (sgent->sg_mem[i]);
+	}
+	free (sgent->sg_mem);
+	free (sgent);
 }
 
 static const char *gshadow_getname (const void *ent)
@@ -120,6 +158,32 @@ static int gshadow_put (const void *ent, FILE * file)
 {
 	const struct sgrp *sg = ent;
 
+	if (   (NULL == sg)
+	    || (valid_field (sg->sg_name, ":\n") == -1)
+	    || (valid_field (sg->sg_passwd, ":\n") == -1)) {
+		return -1;
+	}
+
+	/* FIXME: fail also if sg->sg_adm == NULL ?*/
+	if (NULL != sg->sg_adm) {
+		size_t i;
+		for (i = 0; NULL != sg->sg_adm[i]; i++) {
+			if (valid_field (sg->sg_adm[i], ",:\n") == -1) {
+				return -1;
+			}
+		}
+	}
+
+	/* FIXME: fail also if sg->sg_mem == NULL ?*/
+	if (NULL != sg->sg_mem) {
+		size_t i;
+		for (i = 0; NULL != sg->sg_mem[i]; i++) {
+			if (valid_field (sg->sg_mem[i], ",:\n") == -1) {
+				return -1;
+			}
+		}
+	}
+
 	return (putsgent (sg, file) == -1) ? -1 : 0;
 }
 
@@ -142,22 +206,33 @@ static struct commonio_db gshadow_db = {
 #ifdef WITH_SELINUX
 	NULL,			/* scontext */
 #endif
+	0400,                   /* st_mode */
+	0,                      /* st_uid */
+	0,                      /* st_gid */
 	NULL,			/* head */
 	NULL,			/* tail */
 	NULL,			/* cursor */
-	0,			/* changed */
-	0,			/* isopen */
-	0,			/* locked */
-	0			/* readonly */
+	false,			/* changed */
+	false,			/* isopen */
+	false,			/* locked */
+	false,			/* readonly */
+	false			/* setname */
 };
 
-int sgr_name (const char *filename)
+int sgr_setdbname (const char *filename)
 {
 	return commonio_setname (&gshadow_db, filename);
 }
 
-int sgr_file_present (void)
+/*@observer@*/const char *sgr_dbname (void)
 {
+	return gshadow_db.filename;
+}
+
+bool sgr_file_present (void)
+{
+	if (getdef_bool ("FORCE_SHADOW"))
+		return true;
 	return commonio_present (&gshadow_db);
 }
 
@@ -171,7 +246,7 @@ int sgr_open (int mode)
 	return commonio_open (&gshadow_db, mode);
 }
 
-const struct sgrp *sgr_locate (const char *name)
+/*@observer@*/ /*@null@*/const struct sgrp *sgr_locate (const char *name)
 {
 	return commonio_locate (&gshadow_db, name);
 }
@@ -191,7 +266,7 @@ int sgr_rewind (void)
 	return commonio_rewind (&gshadow_db);
 }
 
-const struct sgrp *sgr_next (void)
+/*@null@*/const struct sgrp *sgr_next (void)
 {
 	return commonio_next (&gshadow_db);
 }
@@ -208,10 +283,10 @@ int sgr_unlock (void)
 
 void __sgr_set_changed (void)
 {
-	gshadow_db.changed = 1;
+	gshadow_db.changed = true;
 }
 
-struct commonio_entry *__sgr_get_head (void)
+/*@dependent@*/ /*@null@*/struct commonio_entry *__sgr_get_head (void)
 {
 	return gshadow_db.head;
 }

lib/sgroupio.h

@@ -1,46 +1,29 @@
 /*
- * Copyright (c) 1990 - 1994, Julianne Frances Haugh
- * Copyright (c) 1996 - 2000, Marek Michałkiewicz
- * Copyright (c) 2001       , Michał Moskal
- * Copyright (c) 2005       , Tomasz Kłoczko
- * Copyright (c) 2008       , Nicolas François
- * All rights reserved.
+ * SPDX-FileCopyrightText: 1990 - 1994, Julianne Frances Haugh
+ * SPDX-FileCopyrightText: 1996 - 2000, Marek Michałkiewicz
+ * SPDX-FileCopyrightText: 2001       , Michał Moskal
+ * SPDX-FileCopyrightText: 2005       , Tomasz Kłoczko
+ * SPDX-FileCopyrightText: 2008       , Nicolas François
  *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- * 1. Redistributions of source code must retain the above copyright
- *    notice, this list of conditions and the following disclaimer.
- * 2. Redistributions in binary form must reproduce the above copyright
- *    notice, this list of conditions and the following disclaimer in the
- *    documentation and/or other materials provided with the distribution.
- * 3. The name of the copyright holders or contributors may not be used to
- *    endorse or promote products derived from this software without
- *    specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
- * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
- * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
- * PARTICULAR PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE COPYRIGHT
- * HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
- * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
- * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
- * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
- * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
- * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
- * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ * SPDX-License-Identifier: BSD-3-Clause
  */
 
+/* $Id$ */
+#ifndef _SGROUPIO_H
+#define _SGROUPIO_H
+
 extern int sgr_close (void);
-extern int sgr_file_present (void);
-extern const struct sgrp *sgr_locate (const char *);
+extern bool sgr_file_present (void);
+extern /*@observer@*/ /*@null@*/const struct sgrp *sgr_locate (const char *name);
 extern int sgr_lock (void);
-extern int sgr_name (const char *);
-extern const struct sgrp *sgr_next (void);
-extern int sgr_open (int);
-extern int sgr_remove (const char *);
+extern int sgr_setdbname (const char *filename);
+extern /*@observer@*/const char *sgr_dbname (void);
+extern /*@null@*/const struct sgrp *sgr_next (void);
+extern int sgr_open (int mode);
+extern int sgr_remove (const char *name);
 extern int sgr_rewind (void);
 extern int sgr_unlock (void);
-extern int sgr_update (const struct sgrp *);
+extern int sgr_update (const struct sgrp *sg);
 extern int sgr_sort (void);
 
+#endif

lib/shadow.c

@@ -1,33 +1,10 @@
 /*
- * Copyright (c) 1989 - 1994, Julianne Frances Haugh
- * Copyright (c) 1996 - 1998, Marek Michałkiewicz
- * Copyright (c) 2003 - 2005, Tomasz Kłoczko
- * Copyright (c) 2008       , Nicolas François
- * All rights reserved.
+ * SPDX-FileCopyrightText: 1989 - 1994, Julianne Frances Haugh
+ * SPDX-FileCopyrightText: 1996 - 1998, Marek Michałkiewicz
+ * SPDX-FileCopyrightText: 2003 - 2005, Tomasz Kłoczko
+ * SPDX-FileCopyrightText: 2009       , Nicolas François
  *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- * 1. Redistributions of source code must retain the above copyright
- *    notice, this list of conditions and the following disclaimer.
- * 2. Redistributions in binary form must reproduce the above copyright
- *    notice, this list of conditions and the following disclaimer in the
- *    documentation and/or other materials provided with the distribution.
- * 3. The name of the copyright holders or contributors may not be used to
- *    endorse or promote products derived from this software without
- *    specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
- * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
- * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
- * PARTICULAR PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE COPYRIGHT
- * HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
- * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
- * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
- * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
- * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
- * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
- * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ * SPDX-License-Identifier: BSD-3-Clause
  */
 
 #include <config.h>
@@ -42,10 +19,10 @@
 #include "defines.h"
 #include <stdio.h>
 #ifdef	USE_NIS
-static int nis_used;
-static int nis_ignore;
+static bool nis_used;
+static bool nis_ignore;
 static enum { native, start, middle, native2 } nis_state;
-static int nis_bound;
+static bool nis_bound;
 static char *nis_domain;
 static char *nis_key;
 static int nis_keylen;
@@ -56,8 +33,6 @@ static int nis_vallen;
 #endif
 
 static FILE *shadow;
-static char spwbuf[BUFSIZ];
-static struct spwd spwd;
 
 #define	FIELDS	9
 #define	OFIELDS	5
@@ -68,12 +43,13 @@ static struct spwd spwd;
  * __setspNIS - turn on or off NIS searches
  */
 
-void __setspNIS (int flag)
+void __setspNIS (bool flag)
 {
 	nis_ignore = !flag;
 
-	if (nis_ignore)
-		nis_used = 0;
+	if (nis_ignore) {
+		nis_used = false;
+	}
 }
 
 /*
@@ -82,10 +58,11 @@ void __setspNIS (int flag)
 
 static int bind_nis (void)
 {
-	if (yp_get_default_domain (&nis_domain))
+	if (yp_get_default_domain (&nis_domain)) {
 		return -1;
+	}
 
-	nis_bound = 1;
+	nis_bound = true;
 	return 0;
 }
 #endif
@@ -96,10 +73,11 @@ static int bind_nis (void)
 
 void setspent (void)
 {
-	if (shadow)
+	if (NULL != shadow) {
 		rewind (shadow);
-	else
+	}else {
 		shadow = fopen (SHADOW_FILE, "r");
+	}
 
 #ifdef	USE_NIS
 	nis_state = native;
@@ -112,8 +90,9 @@ void setspent (void)
 
 void endspent (void)
 {
-	if (shadow)
+	if (NULL != shadow) {
 		(void) fclose (shadow);
+	}
 
 	shadow = (FILE *) 0;
 }
@@ -124,9 +103,10 @@ void endspent (void)
 
 static struct spwd *my_sgetspent (const char *string)
 {
+	static char spwbuf[BUFSIZ];
+	static struct spwd spwd;
 	char *fields[FIELDS];
 	char *cp;
-	char *cpp;
 	int i;
 
 	/*
@@ -171,8 +151,9 @@ static struct spwd *my_sgetspent (const char *string)
 
 	spwd.sp_namp = fields[0];
 #ifdef	USE_NIS
-	if (IS_NISCHAR (fields[0][0]))
-		nis_used = 1;
+	if (IS_NISCHAR (fields[0][0])) {
+		nis_used = true;
+	}
 #endif
 	spwd.sp_pwdp = fields[1];
 
@@ -182,52 +163,60 @@ static struct spwd *my_sgetspent (const char *string)
 	 * incorrectly formatted number, unless we are using NIS.
 	 */
 
-	spwd.sp_lstchg = strtol (fields[2], &cpp, 10);
-	if ((spwd.sp_lstchg == 0) && *cpp) {
-#ifdef	USE_NIS
-		if (!nis_used)
-			return 0;
-		else
-			spwd.sp_lstchg = -1;
-#else
-		return 0;
-#endif
-	} else if (fields[2][0] == '\0')
+	if (fields[2][0] == '\0') {
 		spwd.sp_lstchg = -1;
+	} else {
+		if (getlong (fields[2], &spwd.sp_lstchg) == 0) {
+#ifdef	USE_NIS
+			if (nis_used) {
+				spwd.sp_lstchg = -1;
+			} else
+#endif
+				return 0;
+		} else if (spwd.sp_lstchg < 0) {
+			return 0;
+		}
+	}
 
 	/*
 	 * Get the minimum period between password changes.
 	 */
 
-	spwd.sp_min = strtol (fields[3], &cpp, 10);
-	if ((spwd.sp_min == 0) && *cpp) {
-#ifdef	USE_NIS
-		if (!nis_used)
-			return 0;
-		else
-			spwd.sp_min = -1;
-#else
-		return 0;
-#endif
-	} else if (fields[3][0] == '\0')
+	if (fields[3][0] == '\0') {
 		spwd.sp_min = -1;
+	} else {
+		if (getlong (fields[3], &spwd.sp_min) == 0) {
+#ifdef	USE_NIS
+			if (nis_used) {
+				spwd.sp_min = -1;
+			} else
+#endif
+			{
+				return 0;
+			}
+		} else if (spwd.sp_min < 0) {
+			return 0;
+		}
+	}
 
 	/*
 	 * Get the maximum number of days a password is valid.
 	 */
 
-	spwd.sp_max = strtol (fields[4], &cpp, 10);
-	if ((spwd.sp_max == 0) && *cpp) {
-#ifdef	USE_NIS
-		if (!nis_used)
-			return 0;
-		else
-			spwd.sp_max = -1;
-#else
-		return 0;
-#endif
-	} else if (fields[4][0] == '\0')
+	if (fields[4][0] == '\0') {
 		spwd.sp_max = -1;
+	} else {
+		if (getlong (fields[4], &spwd.sp_max) == 0) {
+#ifdef	USE_NIS
+			if (nis_used) {
+				spwd.sp_max = -1;
+			} else
+#endif
+				return 0;
+		} else if (spwd.sp_max < 0) {
+			return 0;
+		}
+	}
 
 	/*
 	 * If there are only OFIELDS fields (this is a SVR3.2 /etc/shadow
@@ -235,8 +224,10 @@ static struct spwd *my_sgetspent (const char *string)
 	 */
 
 	if (i == OFIELDS) {
-		spwd.sp_warn = spwd.sp_inact = spwd.sp_expire =
-		    spwd.sp_flag = -1;
+		spwd.sp_warn   = -1;
+		spwd.sp_inact  = -1;
+		spwd.sp_expire = -1;
+		spwd.sp_flag   = SHADOW_SP_FLAG_UNSET;
 
 		return &spwd;
 	}
@@ -245,72 +236,88 @@ static struct spwd *my_sgetspent (const char *string)
 	 * Get the number of days of password expiry warning.
 	 */
 
-	spwd.sp_warn = strtol (fields[5], &cpp, 10);
-	if ((spwd.sp_warn == 0) && *cpp) {
-#ifdef	USE_NIS
-		if (!nis_used)
-			return 0;
-		else
-			spwd.sp_warn = -1;
-#else
-		return 0;
-#endif
-	} else if (fields[5][0] == '\0')
+	if (fields[5][0] == '\0') {
 		spwd.sp_warn = -1;
+	} else {
+		if (getlong (fields[5], &spwd.sp_warn) == 0) {
+#ifdef	USE_NIS
+			if (nis_used) {
+				spwd.sp_warn = -1;
+			} else
+#endif
+			{
+				return 0;
+			}
+		} else if (spwd.sp_warn < 0) {
+			return 0;
+		}
+	}
 
 	/*
 	 * Get the number of days of inactivity before an account is
 	 * disabled.
 	 */
 
-	spwd.sp_inact = strtol (fields[6], &cpp, 10);
-	if ((spwd.sp_inact == 0) && *cpp) {
-#ifdef	USE_NIS
-		if (!nis_used)
-			return 0;
-		else
-			spwd.sp_inact = -1;
-#else
-		return 0;
-#endif
-	} else if (fields[6][0] == '\0')
+	if (fields[6][0] == '\0') {
 		spwd.sp_inact = -1;
+	} else {
+		if (getlong (fields[6], &spwd.sp_inact) == 0) {
+#ifdef	USE_NIS
+			if (nis_used) {
+				spwd.sp_inact = -1;
+			} else
+#endif
+			{
+				return 0;
+			}
+		} else if (spwd.sp_inact < 0) {
+			return 0;
+		}
+	}
 
 	/*
 	 * Get the number of days after the epoch before the account is
 	 * set to expire.
 	 */
 
-	spwd.sp_expire = strtol (fields[7], &cpp, 10);
-	if ((spwd.sp_expire == 0) && *cpp) {
-#ifdef	USE_NIS
-		if (!nis_used)
-			return 0;
-		else
-			spwd.sp_expire = -1;
-#else
-		return 0;
-#endif
-	} else if (fields[7][0] == '\0')
+	if (fields[7][0] == '\0') {
 		spwd.sp_expire = -1;
+	} else {
+		if (getlong (fields[7], &spwd.sp_expire) == 0) {
+#ifdef	USE_NIS
+			if (nis_used) {
+				spwd.sp_expire = -1;
+			} else
+#endif
+			{
+				return 0;
+			}
+		} else if (spwd.sp_expire < 0) {
+			return 0;
+		}
+	}
 
 	/*
 	 * This field is reserved for future use.  But it isn't supposed
 	 * to have anything other than a valid integer in it.
 	 */
 
-	spwd.sp_flag = strtol (fields[8], &cpp, 10);
-	if ((spwd.sp_flag == 0) && *cpp) {
+	if (fields[8][0] == '\0') {
+		spwd.sp_flag = SHADOW_SP_FLAG_UNSET;
+	} else {
+		if (getulong (fields[8], &spwd.sp_flag) == 0) {
 #ifdef	USE_NIS
-		if (!nis_used)
-			return 0;
-		else
-			spwd.sp_flag = -1;
-#else
-		return 0;
+			if (nis_used) {
+				spwd.sp_flag = SHADOW_SP_FLAG_UNSET;
+			} else
 #endif
-	} else if (fields[8][0] == '\0')
-		spwd.sp_flag = -1;
+			{
+				return 0;
+			}
+		} else if (spwd.sp_flag < 0) {
+			return 0;
+		}
+	}
 
 	return (&spwd);
 }
@@ -324,21 +331,24 @@ struct spwd *fgetspent (FILE * fp)
 	char buf[BUFSIZ];
 	char *cp;
 
-	if (!fp)
+	if (NULL == fp) {
 		return (0);
+	}
 
 #ifdef	USE_NIS
-	while (fgets (buf, sizeof buf, fp) != (char *) 0)
+	while (fgets (buf, (int) sizeof buf, fp) != (char *) 0)
 #else
-	if (fgets (buf, sizeof buf, fp) != (char *) 0)
+	if (fgets (buf, (int) sizeof buf, fp) != (char *) 0)
 #endif
 	{
 		cp = strchr (buf, '\n');
-		if (NULL != cp)
+		if (NULL != cp) {
 			*cp = '\0';
+		}
 #ifdef	USE_NIS
-		if (nis_ignore && IS_NISCHAR (buf[0]))
+		if (nis_ignore && IS_NISCHAR (buf[0])) {
 			continue;
+		}
 #endif
 		return my_sgetspent (buf);
 	}
@@ -354,10 +364,10 @@ struct spwd *getspent (void)
 #ifdef	USE_NIS
 	int nis_1_user = 0;
 	struct spwd *val;
-	char buf[BUFSIZ];
 #endif
-	if (!shadow)
+	if (NULL == shadow) {
 		setspent ();
+	}
 
 #ifdef	USE_NIS
       again:
@@ -411,7 +421,7 @@ struct spwd *getspent (void)
 
 		return 0;
 	} else {
-		if (nis_bound == 0) {
+		if (!nis_bound) {
 			if (bind_nis ()) {
 				nis_state = native2;
 				goto again;
@@ -419,15 +429,15 @@ struct spwd *getspent (void)
 		}
 		if (nis_state == start) {
 			if (yp_first (nis_domain, "shadow.bynam", &nis_key,
-				      &nis_keylen, &nis_val, &nis_vallen)) {
+			              &nis_keylen, &nis_val, &nis_vallen)) {
 				nis_state = native2;
 				goto again;
 			}
 			nis_state = middle;
 		} else if (nis_state == middle) {
 			if (yp_next (nis_domain, "shadow.bynam", nis_key,
-				     nis_keylen, &nis_key, &nis_keylen,
-				     &nis_val, &nis_vallen)) {
+			             nis_keylen, &nis_key, &nis_keylen,
+			             &nis_val, &nis_vallen)) {
 				nis_state = native2;
 				goto again;
 			}
@@ -448,9 +458,8 @@ struct spwd *getspnam (const char *name)
 	struct spwd *sp;
 
 #ifdef	USE_NIS
-	char buf[BUFSIZ];
 	static char save_name[16];
-	int nis_disabled = 0;
+	bool nis_disabled = false;
 #endif
 
 	setspent ();
@@ -460,18 +469,20 @@ struct spwd *getspnam (const char *name)
 	 * Search the shadow.byname map for this user.
 	 */
 
-	if (!nis_ignore && !nis_bound)
+	if (!nis_ignore && !nis_bound) {
 		bind_nis ();
+	}
 
 	if (!nis_ignore && nis_bound) {
 		char *cp;
 
 		if (yp_match (nis_domain, "shadow.byname", name,
-			      strlen (name), &nis_val, &nis_vallen) == 0) {
+		              strlen (name), &nis_val, &nis_vallen) == 0) {
 
 			cp = strchr (nis_val, '\n');
-			if (NULL != cp)
+			if (NULL != cp) {
 				*cp = '\0';
+			}
 
 			nis_state = middle;
 			sp = my_sgetspent (nis_val);
@@ -482,8 +493,9 @@ struct spwd *getspnam (const char *name)
 			}
 			endspent ();
 			return sp;
-		} else
+		} else {
 			nis_state = native2;
+		}
 	}
 #endif
 #ifdef	USE_NIS
@@ -495,17 +507,19 @@ struct spwd *getspnam (const char *name)
 	 */
 
 	if (nis_used) {
-		nis_ignore++;
-		nis_disabled++;
+		nis_ignore = true;
+		nis_disabled = true;
 	}
 #endif
 	while ((sp = getspent ()) != (struct spwd *) 0) {
-		if (strcmp (name, sp->sp_namp) == 0)
+		if (strcmp (name, sp->sp_namp) == 0) {
 			break;
+		}
 	}
 #ifdef	USE_NIS
-	if (nis_disabled)
-		nis_ignore--;
+	if (nis_disabled) {
+		nis_ignore = false;
+	}
 #endif
 	endspent ();
 	return (sp);
@@ -513,3 +527,4 @@ struct spwd *getspnam (const char *name)
 #else
 extern int errno;		/* warning: ANSI C forbids an empty source file */
 #endif
+

lib/shadowio.c

@@ -1,34 +1,11 @@
 /*
- * Copyright (c) 1990 - 1994, Julianne Frances Haugh
- * Copyright (c) 1996 - 2000, Marek Michałkiewicz
- * Copyright (c) 2001       , Michał Moskal
- * Copyright (c) 2005       , Tomasz Kłoczko
- * Copyright (c) 2007 - 2008, Nicolas François
- * All rights reserved.
+ * SPDX-FileCopyrightText: 1990 - 1994, Julianne Frances Haugh
+ * SPDX-FileCopyrightText: 1996 - 2000, Marek Michałkiewicz
+ * SPDX-FileCopyrightText: 2001       , Michał Moskal
+ * SPDX-FileCopyrightText: 2005       , Tomasz Kłoczko
+ * SPDX-FileCopyrightText: 2007 - 2009, Nicolas François
  *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- * 1. Redistributions of source code must retain the above copyright
- *    notice, this list of conditions and the following disclaimer.
- * 2. Redistributions in binary form must reproduce the above copyright
- *    notice, this list of conditions and the following disclaimer in the
- *    documentation and/or other materials provided with the distribution.
- * 3. The name of the copyright holders or contributors may not be used to
- *    endorse or promote products derived from this software without
- *    specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
- * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
- * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
- * PARTICULAR PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE COPYRIGHT
- * HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
- * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
- * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
- * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
- * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
- * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
- * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ * SPDX-License-Identifier: BSD-3-Clause
  */
 
 #include <config.h>
@@ -40,22 +17,25 @@
 #include <shadow.h>
 #include <stdio.h>
 #include "commonio.h"
+#include "getdef.h"
 #include "shadowio.h"
+#ifdef WITH_TCB
+#include <tcb.h>
+#include "tcbfuncs.h"
+#endif				/* WITH_TCB */
 
-static void *shadow_dup (const void *ent)
+static /*@null@*/ /*@only@*/void *shadow_dup (const void *ent)
 {
 	const struct spwd *sp = ent;
 
 	return __spw_dup (sp);
 }
 
-static void shadow_free (void *ent)
+static void shadow_free (/*@out@*//*@only@*/void *ent)
 {
 	struct spwd *sp = ent;
 
-	free (sp->sp_namp);
-	free (sp->sp_pwdp);
-	free (sp);
+	spw_free (sp);
 }
 
 static const char *shadow_getname (const void *ent)
@@ -74,6 +54,12 @@ static int shadow_put (const void *ent, FILE * file)
 {
 	const struct spwd *sp = ent;
 
+	if (   (NULL == sp)
+	    || (valid_field (sp->sp_namp, ":\n") == -1)
+	    || (valid_field (sp->sp_pwdp, ":\n") == -1)) {
+		return -1;
+	}
+
 	return (putspent (sp, file) == -1) ? -1 : 0;
 }
 
@@ -95,37 +81,81 @@ static struct commonio_db shadow_db = {
 	NULL,			/* fp */
 #ifdef WITH_SELINUX
 	NULL,			/* scontext */
-#endif
+#endif				/* WITH_SELINUX */
+	0400,                   /* st_mode */
+	0,                      /* st_uid */
+	0,                      /* st_gid */
 	NULL,			/* head */
 	NULL,			/* tail */
 	NULL,			/* cursor */
-	0,			/* changed */
-	0,			/* isopen */
-	0,			/* locked */
-	0			/* readonly */
+	false,			/* changed */
+	false,			/* isopen */
+	false,			/* locked */
+	false,			/* readonly */
+	false			/* setname */
 };
 
-int spw_name (const char *filename)
+int spw_setdbname (const char *filename)
 {
 	return commonio_setname (&shadow_db, filename);
 }
 
-int spw_file_present (void)
+/*@observer@*/const char *spw_dbname (void)
 {
+	return shadow_db.filename;
+}
+
+bool spw_file_present (void)
+{
+	if (getdef_bool ("FORCE_SHADOW"))
+		return true;
 	return commonio_present (&shadow_db);
 }
 
 int spw_lock (void)
 {
-	return commonio_lock (&shadow_db);
+#ifdef WITH_TCB
+	int retval = 0;
+
+	if (!getdef_bool ("USE_TCB")) {
+#endif				/* WITH_TCB */
+		return commonio_lock (&shadow_db);
+#ifdef WITH_TCB
+	}
+	if (shadowtcb_drop_priv () == SHADOWTCB_FAILURE) {
+		return 0;
+	}
+	if (lckpwdf_tcb (shadow_db.filename) == 0) {
+		shadow_db.locked = 1;
+		retval = 1;
+	}
+	if (shadowtcb_gain_priv () == SHADOWTCB_FAILURE) {
+		return 0;
+	}
+	return retval;
+#endif				/* WITH_TCB */
 }
 
 int spw_open (int mode)
 {
-	return commonio_open (&shadow_db, mode);
+	int retval = 0;
+#ifdef WITH_TCB
+	bool use_tcb = getdef_bool ("USE_TCB");
+
+	if (use_tcb && (shadowtcb_drop_priv () == SHADOWTCB_FAILURE)) {
+		return 0;
+	}
+#endif				/* WITH_TCB */
+	retval = commonio_open (&shadow_db, mode);
+#ifdef WITH_TCB
+	if (use_tcb && (shadowtcb_gain_priv () == SHADOWTCB_FAILURE)) {
+		return 0;
+	}
+#endif				/* WITH_TCB */
+	return retval;
 }
 
-const struct spwd *spw_locate (const char *name)
+/*@observer@*/ /*@null@*/const struct spwd *spw_locate (const char *name)
 {
 	return commonio_locate (&shadow_db, name);
 }
@@ -145,19 +175,52 @@ int spw_rewind (void)
 	return commonio_rewind (&shadow_db);
 }
 
-const struct spwd *spw_next (void)
+/*@observer@*/ /*@null@*/const struct spwd *spw_next (void)
 {
 	return commonio_next (&shadow_db);
 }
 
 int spw_close (void)
 {
-	return commonio_close (&shadow_db);
+	int retval = 0;
+#ifdef WITH_TCB
+	bool use_tcb = getdef_bool ("USE_TCB");
+
+	if (use_tcb && (shadowtcb_drop_priv () == SHADOWTCB_FAILURE)) {
+		return 0;
+	}
+#endif				/* WITH_TCB */
+	retval = commonio_close (&shadow_db);
+#ifdef WITH_TCB
+	if (use_tcb && (shadowtcb_gain_priv () == SHADOWTCB_FAILURE)) {
+		return 0;
+	}
+#endif				/* WITH_TCB */
+	return retval;
 }
 
 int spw_unlock (void)
 {
-	return commonio_unlock (&shadow_db);
+#ifdef WITH_TCB
+	int retval = 0;
+
+	if (!getdef_bool ("USE_TCB")) {
+#endif				/* WITH_TCB */
+		return commonio_unlock (&shadow_db);
+#ifdef WITH_TCB
+	}
+	if (shadowtcb_drop_priv () == SHADOWTCB_FAILURE) {
+		return 0;
+	}
+	if (ulckpwdf_tcb () == 0) {
+		shadow_db.locked = 0;
+		retval = 1;
+	}
+	if (shadowtcb_gain_priv () == SHADOWTCB_FAILURE) {
+		return 0;
+	}
+	return retval;
+#endif				/* WITH_TCB */
 }
 
 struct commonio_entry *__spw_get_head (void)
@@ -173,5 +236,10 @@ void __spw_del_entry (const struct commonio_entry *ent)
 /* Sort with respect to passwd ordering. */
 int spw_sort ()
 {
+#ifdef WITH_TCB
+	if (getdef_bool ("USE_TCB")) {
+		return 0;
+	}
+#endif				/* WITH_TCB */
 	return commonio_sort_wrt (&shadow_db, __pw_get_db ());
 }

lib/shadowio.h

@@ -1,45 +1,30 @@
 /*
- * Copyright (c) 1990 - 1994, Julianne Frances Haugh
- * Copyright (c) 1996 - 2000, Marek Michałkiewicz
- * Copyright (c) 2001 - 2005, Tomasz Kłoczko
- * Copyright (c) 2008       , Nicolas François
- * All rights reserved.
+ * SPDX-FileCopyrightText: 1990 - 1994, Julianne Frances Haugh
+ * SPDX-FileCopyrightText: 1996 - 2000, Marek Michałkiewicz
+ * SPDX-FileCopyrightText: 2001 - 2005, Tomasz Kłoczko
+ * SPDX-FileCopyrightText: 2008       , Nicolas François
  *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- * 1. Redistributions of source code must retain the above copyright
- *    notice, this list of conditions and the following disclaimer.
- * 2. Redistributions in binary form must reproduce the above copyright
- *    notice, this list of conditions and the following disclaimer in the
- *    documentation and/or other materials provided with the distribution.
- * 3. The name of the copyright holders or contributors may not be used to
- *    endorse or promote products derived from this software without
- *    specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
- * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
- * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
- * PARTICULAR PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE COPYRIGHT
- * HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
- * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
- * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
- * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
- * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
- * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
- * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ * SPDX-License-Identifier: BSD-3-Clause
  */
 
+/* $Id$ */
+#ifndef SHADOWIO_H
+#define SHADOWIO_H
+
+#include "defines.h"
+
 extern int spw_close (void);
-extern int spw_file_present (void);
-extern const struct spwd *spw_locate (const char *);
+extern bool spw_file_present (void);
+extern /*@observer@*/ /*@null@*/const struct spwd *spw_locate (const char *name);
 extern int spw_lock (void);
-extern int spw_name (const char *);
-extern const struct spwd *spw_next (void);
-extern int spw_open (int);
-extern int spw_remove (const char *);
+extern int spw_setdbname (const char *filename);
+extern /*@observer@*/const char *spw_dbname (void);
+extern /*@observer@*/ /*@null@*/const struct spwd *spw_next (void);
+extern int spw_open (int mode);
+extern int spw_remove (const char *name);
 extern int spw_rewind (void);
 extern int spw_unlock (void);
-extern int spw_update (const struct spwd *);
+extern int spw_update (const struct spwd *sp);
 extern int spw_sort (void);
 
+#endif

lib/shadowlog.c

@@ -0,0 +1,31 @@
+#include "shadowlog.h"
+
+#include "lib/shadowlog_internal.h"
+
+const char *shadow_progname = "libshadow";
+FILE *shadow_logfd = NULL;
+
+void log_set_progname(const char *progname)
+{
+	shadow_progname = progname;
+}
+
+const char *log_get_progname(void)
+{
+	return shadow_progname;
+}
+
+void log_set_logfd(FILE *fd)
+{
+	if (NULL != fd)
+		shadow_logfd = fd;
+	else
+		shadow_logfd = stderr;
+}
+
+FILE *log_get_logfd(void)
+{
+	if (shadow_logfd != NULL)
+		return shadow_logfd;
+	return stderr;
+}

lib/shadowlog.h

@@ -0,0 +1,40 @@
+/*
+ * Copyright (c) 2021       , Serge Hallyn
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. The name of the copyright holders or contributors may not be used to
+ *    endorse or promote products derived from this software without
+ *    specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
+ * PARTICULAR PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE COPYRIGHT
+ * HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+/* $Id$ */
+#ifndef _LOG_H
+#define _LOG_H
+#include <stdio.h>
+
+extern void log_set_progname(const char *);
+extern const char *log_get_progname(void);
+extern void log_set_logfd(FILE *fd);
+extern FILE *log_get_logfd(void);
+
+#endif

lib/shadowlog_internal.h

@@ -0,0 +1,7 @@
+#ifndef _SHADOWLOG_INTERNAL_H
+#define _SHADOWLOG_INTERNAL_H
+
+extern const char *shadow_progname; /* Program name showed in error messages */
+extern FILE *shadow_logfd;  /* file descripter to which error messages are printed */
+
+#endif /* _SHADOWLOG_INTERNAL_H */

lib/shadowmem.c

@@ -1,34 +1,11 @@
 /*
- * Copyright (c) 1990 - 1994, Julianne Frances Haugh
- * Copyright (c) 1996 - 2000, Marek Michałkiewicz
- * Copyright (c) 2001       , Michał Moskal
- * Copyright (c) 2005       , Tomasz Kłoczko
- * Copyright (c) 2007 - 2008, Nicolas François
- * All rights reserved.
+ * SPDX-FileCopyrightText: 1990 - 1994, Julianne Frances Haugh
+ * SPDX-FileCopyrightText: 1996 - 2000, Marek Michałkiewicz
+ * SPDX-FileCopyrightText: 2001       , Michał Moskal
+ * SPDX-FileCopyrightText: 2005       , Tomasz Kłoczko
+ * SPDX-FileCopyrightText: 2007 - 2013, Nicolas François
  *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- * 1. Redistributions of source code must retain the above copyright
- *    notice, this list of conditions and the following disclaimer.
- * 2. Redistributions in binary form must reproduce the above copyright
- *    notice, this list of conditions and the following disclaimer in the
- *    documentation and/or other materials provided with the distribution.
- * 3. The name of the copyright holders or contributors may not be used to
- *    endorse or promote products derived from this software without
- *    specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
- * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
- * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
- * PARTICULAR PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE COPYRIGHT
- * HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
- * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
- * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
- * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
- * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
- * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
- * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ * SPDX-License-Identifier: BSD-3-Clause
  */
 
 #include <config.h>
@@ -41,17 +18,51 @@
 #include <stdio.h>
 #include "shadowio.h"
 
-struct spwd *__spw_dup (const struct spwd *spent)
+/*@null@*/ /*@only@*/struct spwd *__spw_dup (const struct spwd *spent)
 {
 	struct spwd *sp;
 
-	if (!(sp = (struct spwd *) malloc (sizeof *sp)))
+	sp = (struct spwd *) malloc (sizeof *sp);
+	if (NULL == sp) {
 		return NULL;
-	*sp = *spent;
-	if (!(sp->sp_namp = strdup (spent->sp_namp)))
+	}
+	/* The libc might define other fields. They won't be copied. */
+	memset (sp, 0, sizeof *sp);
+	sp->sp_lstchg = spent->sp_lstchg;
+	sp->sp_min    = spent->sp_min;
+	sp->sp_max    = spent->sp_max;
+	sp->sp_warn   = spent->sp_warn;
+	sp->sp_inact  = spent->sp_inact;
+	sp->sp_expire = spent->sp_expire;
+	sp->sp_flag   = spent->sp_flag;
+	/*@-mustfreeonly@*/
+	sp->sp_namp   = strdup (spent->sp_namp);
+	/*@=mustfreeonly@*/
+	if (NULL == sp->sp_namp) {
+		free(sp);
 		return NULL;
-	if (!(sp->sp_pwdp = strdup (spent->sp_pwdp)))
+	}
+	/*@-mustfreeonly@*/
+	sp->sp_pwdp = strdup (spent->sp_pwdp);
+	/*@=mustfreeonly@*/
+	if (NULL == sp->sp_pwdp) {
+		free(sp->sp_namp);
+		free(sp);
 		return NULL;
+	}
+
 	return sp;
 }
 
+void spw_free (/*@out@*/ /*@only@*/struct spwd *spent)
+{
+	if (spent != NULL) {
+		free (spent->sp_namp);
+		if (NULL != spent->sp_pwdp) {
+			memzero (spent->sp_pwdp, strlen (spent->sp_pwdp));
+			free (spent->sp_pwdp);
+		}
+		free (spent);
+	}
+}
+

lib/spawn.c

@@ -0,0 +1,63 @@
+/*
+ * SPDX-FileCopyrightText: 2011       , Jonathan Nieder
+ *
+ * SPDX-License-Identifier: BSD-3-Clause
+ */
+
+#include <config.h>
+
+#include <stdio.h>
+#include <sys/types.h>
+#include <sys/wait.h>
+#include <unistd.h>
+#include <errno.h>
+#include <string.h>
+#include "exitcodes.h"
+#include "prototypes.h"
+
+#include "shadowlog_internal.h"
+
+int run_command (const char *cmd, const char *argv[],
+                 /*@null@*/const char *envp[], /*@out@*/int *status)
+{
+	pid_t pid, wpid;
+
+	if (NULL == envp) {
+		envp = (const char **)environ;
+	}
+
+	(void) fflush (stdout);
+	(void) fflush (shadow_logfd);
+
+	pid = fork ();
+	if (0 == pid) {
+		(void) execve (cmd, (char * const *) argv,
+		               (char * const *) envp);
+		if (ENOENT == errno) {
+			exit (E_CMD_NOTFOUND);
+		}
+		fprintf (shadow_logfd, "%s: cannot execute %s: %s\n",
+		         shadow_progname, cmd, strerror (errno));
+		exit (E_CMD_NOEXEC);
+	} else if ((pid_t)-1 == pid) {
+		fprintf (shadow_logfd, "%s: cannot execute %s: %s\n",
+		         shadow_progname, cmd, strerror (errno));
+		return -1;
+	}
+
+	do {
+		wpid = waitpid (pid, status, 0);
+		if ((pid_t)-1 == wpid && errno == ECHILD)
+			break;
+	} while (   ((pid_t)-1 == wpid && errno == EINTR)
+	         || ((pid_t)-1 != wpid && wpid != pid));
+
+	if ((pid_t)-1 == wpid) {
+		fprintf (shadow_logfd, "%s: waitpid (status: %d): %s\n",
+		         shadow_progname, *status, strerror (errno));
+		return -1;
+	}
+
+	return 0;
+}
+

lib/sssd.c

@@ -0,0 +1,75 @@
+/* Author: Peter Vrabec <pvrabec@redhat.com> */
+
+#include <config.h>
+#ifdef USE_SSSD
+
+#include <stdio.h>
+#include <sys/wait.h>
+#include <sys/types.h>
+#include "exitcodes.h"
+#include "defines.h"
+#include "prototypes.h"
+#include "sssd.h"
+
+#include "shadowlog_internal.h"
+
+#define MSG_SSSD_FLUSH_CACHE_FAILED "%s: Failed to flush the sssd cache."
+
+int sssd_flush_cache (int dbflags)
+{
+	int status, code, rv;
+	const char *cmd = "/usr/sbin/sss_cache";
+	char *sss_cache_args = NULL;
+	const char *spawnedArgs[] = {"sss_cache", NULL, NULL};
+	const char *spawnedEnv[] = {NULL};
+	int i = 0;
+
+	sss_cache_args = malloc(4);
+	if (sss_cache_args == NULL) {
+	    return -1;
+	}
+
+	sss_cache_args[i++] = '-';
+	if (dbflags & SSSD_DB_PASSWD) {
+		sss_cache_args[i++] = 'U';
+	}
+	if (dbflags & SSSD_DB_GROUP) {
+		sss_cache_args[i++] = 'G';
+	}
+	sss_cache_args[i++] = '\0';
+	if (i == 2) {
+		/* Neither passwd nor group, nothing to do */
+		free(sss_cache_args);
+		return 0;
+	}
+	spawnedArgs[1] = sss_cache_args;
+
+	rv = run_command (cmd, spawnedArgs, spawnedEnv, &status);
+	free(sss_cache_args);
+	if (rv != 0) {
+		/* run_command writes its own more detailed message. */
+		SYSLOG ((LOG_WARN, MSG_SSSD_FLUSH_CACHE_FAILED, shadow_progname));
+		return -1;
+	}
+
+	code = WEXITSTATUS (status);
+	if (!WIFEXITED (status)) {
+		SYSLOG ((LOG_WARN, "%s: sss_cache did not terminate normally (signal %d)",
+			shadow_progname, WTERMSIG (status)));
+		return -1;
+	} else if (code == E_CMD_NOTFOUND) {
+		/* sss_cache is not installed, or it is installed but uses an
+		   interpreter that is missing.  Probably the former. */
+		return 0;
+	} else if (code != 0) {
+		SYSLOG ((LOG_WARN, "%s: sss_cache exited with status %d", shadow_progname, code));
+		SYSLOG ((LOG_WARN, MSG_SSSD_FLUSH_CACHE_FAILED, shadow_progname));
+		return -1;
+	}
+
+	return 0;
+}
+#else				/* USE_SSSD */
+extern int errno;		/* warning: ANSI C forbids an empty source file */
+#endif				/* USE_SSSD */
+

lib/sssd.h

@@ -0,0 +1,17 @@
+#ifndef _SSSD_H_
+#define _SSSD_H_
+
+#define SSSD_DB_PASSWD	0x001
+#define SSSD_DB_GROUP	0x002
+
+/*
+ * sssd_flush_cache - flush specified service buffer in sssd cache
+ */
+#ifdef	USE_SSSD
+extern int sssd_flush_cache (int dbflags);
+#else
+#define sssd_flush_cache(service) (0)
+#endif
+
+#endif
+

lib/subordinateio.h

@@ -0,0 +1,48 @@
+/*
+ * Copyright (c) 2012- Eric W. Biederman
+ */
+
+#ifndef _SUBORDINATEIO_H
+#define _SUBORDINATEIO_H
+
+#include <config.h>
+
+#ifdef ENABLE_SUBIDS
+
+#include <sys/types.h>
+
+#include "../libsubid/subid.h"
+
+extern int sub_uid_close(void);
+extern bool have_sub_uids(const char *owner, uid_t start, unsigned long count);
+extern bool sub_uid_file_present (void);
+extern bool local_sub_uid_assigned(const char *owner);
+extern int sub_uid_lock (void);
+extern int sub_uid_setdbname (const char *filename);
+extern /*@observer@*/const char *sub_uid_dbname (void);
+extern int sub_uid_open (int mode);
+extern int sub_uid_unlock (void);
+extern int sub_uid_add (const char *owner, uid_t start, unsigned long count);
+extern int sub_uid_remove (const char *owner, uid_t start, unsigned long count);
+extern uid_t sub_uid_find_free_range(uid_t min, uid_t max, unsigned long count);
+extern int list_owner_ranges(const char *owner, enum subid_type id_type, struct subid_range **ranges);
+extern bool new_subid_range(struct subordinate_range *range, enum subid_type id_type, bool reuse);
+extern bool release_subid_range(struct subordinate_range *range, enum subid_type id_type);
+extern int find_subid_owners(unsigned long id, enum subid_type id_type, uid_t **uids);
+extern void free_subordinate_ranges(struct subordinate_range **ranges, int count);
+
+extern int sub_gid_close(void);
+extern bool have_sub_gids(const char *owner, gid_t start, unsigned long count);
+extern bool sub_gid_file_present (void);
+extern bool local_sub_gid_assigned(const char *owner);
+extern int sub_gid_lock (void);
+extern int sub_gid_setdbname (const char *filename);
+extern /*@observer@*/const char *sub_gid_dbname (void);
+extern int sub_gid_open (int mode);
+extern int sub_gid_unlock (void);
+extern int sub_gid_add (const char *owner, gid_t start, unsigned long count);
+extern int sub_gid_remove (const char *owner, gid_t start, unsigned long count);
+extern uid_t sub_gid_find_free_range(gid_t min, gid_t max, unsigned long count);
+#endif				/* ENABLE_SUBIDS */
+
+#endif

lib/tcbfuncs.c

@@ -0,0 +1,606 @@
+/*
+ * SPDX-FileCopyrightText: 2001 Rafal Wojtczuk, Solar Designer
+ * SPDX-License-Identifier: 0BSD
+ */
+
+#define _GNU_SOURCE
+
+#include <errno.h>
+#include <fcntl.h>
+#include <grp.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <sys/stat.h>
+#include <tcb.h>
+#include <unistd.h>
+
+#include "config.h"
+
+#include "defines.h"
+#include "prototypes.h"
+#include "getdef.h"
+#include "shadowio.h"
+#include "tcbfuncs.h"
+
+#include "shadowlog_internal.h"
+
+#define SHADOWTCB_HASH_BY 1000
+#define SHADOWTCB_LOCK_SUFFIX ".lock"
+
+static /*@null@*//*@only@*/char *stored_tcb_user = NULL;
+
+shadowtcb_status shadowtcb_drop_priv (void)
+{
+	if (!getdef_bool ("USE_TCB")) {
+		return SHADOWTCB_SUCCESS;
+	}
+
+	if (NULL != stored_tcb_user) {
+		if (tcb_drop_priv (stored_tcb_user) == 0) {
+			return SHADOWTCB_SUCCESS;
+		}
+	}
+
+	return SHADOWTCB_FAILURE;
+}
+
+shadowtcb_status shadowtcb_gain_priv (void)
+{
+	if (!getdef_bool ("USE_TCB")) {
+		return SHADOWTCB_SUCCESS;
+	}
+
+	return (tcb_gain_priv () == 0) ? SHADOWTCB_SUCCESS : SHADOWTCB_FAILURE;
+}
+
+/* In case something goes wrong, we return immediately, not polluting the
+ * code with free(). All errors are fatal, so the application is expected
+ * to exit soon.
+ */
+#define OUT_OF_MEMORY do { \
+	fprintf (shadow_logfd, _("%s: out of memory\n"), shadow_progname); \
+	(void) fflush (shadow_logfd); \
+} while (false)
+
+/* Returns user's tcb directory path relative to TCB_DIR. */
+static /*@null@*/ char *shadowtcb_path_rel (const char *name, uid_t uid)
+{
+	char *ret;
+
+	if (!getdef_bool ("TCB_SYMLINKS") || uid < SHADOWTCB_HASH_BY) {
+		if (asprintf (&ret, "%s", name) == -1) {
+			OUT_OF_MEMORY;
+			return NULL;
+		}
+	} else if (uid < SHADOWTCB_HASH_BY * SHADOWTCB_HASH_BY) {
+		if (asprintf (&ret, ":%dK/%s",
+		              uid / SHADOWTCB_HASH_BY, name) == -1) {
+			OUT_OF_MEMORY;
+			return NULL;
+		}
+	} else {
+		if (asprintf (&ret, ":%dM/:%dK/%s",
+		              uid / (SHADOWTCB_HASH_BY * SHADOWTCB_HASH_BY),
+		              (uid % (SHADOWTCB_HASH_BY * SHADOWTCB_HASH_BY)) / SHADOWTCB_HASH_BY,
+			name) == -1) {
+			OUT_OF_MEMORY;
+			return NULL;
+		}
+	}
+	return ret;
+}
+
+static /*@null@*/ char *shadowtcb_path_rel_existing (const char *name)
+{
+	char *path, *rval;
+	struct stat st;
+	char link[8192];
+	ssize_t ret;
+
+	if (asprintf (&path, TCB_DIR "/%s", name) == -1) {
+		OUT_OF_MEMORY;
+		return NULL;
+	}
+	if (lstat (path, &st) != 0) {
+		fprintf (shadow_logfd,
+		         _("%s: Cannot stat %s: %s\n"),
+		         shadow_progname, path, strerror (errno));
+		free (path);
+		return NULL;
+	}
+	if (S_ISDIR (st.st_mode)) {
+		free (path);
+		rval = strdup (name);
+		if (NULL == rval) {
+			OUT_OF_MEMORY;
+			return NULL;
+		}
+		return rval;
+	}
+	if (!S_ISLNK (st.st_mode)) {
+		fprintf (shadow_logfd,
+		         _("%s: %s is neither a directory, nor a symlink.\n"),
+		         shadow_progname, path);
+		free (path);
+		return NULL;
+	}
+	ret = readlink (path, link, sizeof (link) - 1);
+	if (-1 == ret) {
+		fprintf (shadow_logfd,
+		         _("%s: Cannot read symbolic link %s: %s\n"),
+		         shadow_progname, path, strerror (errno));
+		free (path);
+		return NULL;
+	}
+	free (path);
+	if ((size_t)ret >= sizeof(link) - 1) {
+		link[sizeof(link) - 1] = '\0';
+		fprintf (shadow_logfd,
+		         _("%s: Suspiciously long symlink: %s\n"),
+		         shadow_progname, link);
+		return NULL;
+	}
+	link[(size_t)ret] = '\0';
+	rval = strdup (link);
+	if (NULL == rval) {
+		OUT_OF_MEMORY;
+		return NULL;
+	}
+	return rval;
+}
+
+static /*@null@*/ char *shadowtcb_path (const char *name, uid_t uid)
+{
+	char *ret, *rel;
+
+	rel = shadowtcb_path_rel (name, uid);
+	if (NULL == rel) {
+		return NULL;
+	}
+	if (asprintf (&ret, TCB_DIR "/%s", rel) == -1) {
+		OUT_OF_MEMORY;
+		free (rel);
+		return NULL;
+	}
+	free (rel);
+	return ret;
+}
+
+static /*@null@*/ char *shadowtcb_path_existing (const char *name)
+{
+	char *ret, *rel;
+
+	rel = shadowtcb_path_rel_existing (name);
+	if (NULL == rel) {
+		return NULL;
+	}
+	if (asprintf (&ret, TCB_DIR "/%s", rel) == -1) {
+		OUT_OF_MEMORY;
+		free (rel);
+		return NULL;
+	}
+	free (rel);
+	return ret;
+}
+
+static shadowtcb_status mkdir_leading (const char *name, uid_t uid)
+{
+	char *ind, *dir, *ptr, *path = shadowtcb_path_rel (name, uid);
+	struct stat st;
+
+	if (NULL == path) {
+		return SHADOWTCB_FAILURE;
+	}
+	ptr = path;
+	if (stat (TCB_DIR, &st) != 0) {
+		fprintf (shadow_logfd,
+		         _("%s: Cannot stat %s: %s\n"),
+		         shadow_progname, TCB_DIR, strerror (errno));
+		goto out_free_path;
+	}
+	while ((ind = strchr (ptr, '/'))) {
+		*ind = '\0';
+		if (asprintf (&dir, TCB_DIR "/%s", path) == -1) {
+			OUT_OF_MEMORY;
+			return SHADOWTCB_FAILURE;
+		}
+		if ((mkdir (dir, 0700) != 0) && (errno != EEXIST)) {
+			fprintf (shadow_logfd,
+			         _("%s: Cannot create directory %s: %s\n"),
+			         shadow_progname, dir, strerror (errno));
+			goto out_free_dir;
+		}
+		if (chown (dir, 0, st.st_gid) != 0) {
+			fprintf (shadow_logfd,
+			         _("%s: Cannot change owner of %s: %s\n"),
+			         shadow_progname, dir, strerror (errno));
+			goto out_free_dir;
+		}
+		if (chmod (dir, 0711) != 0) {
+			fprintf (shadow_logfd,
+			         _("%s: Cannot change mode of %s: %s\n"),
+			         shadow_progname, dir, strerror (errno));
+			goto out_free_dir;
+		}
+		free (dir);
+		*ind = '/';
+		ptr = ind + 1;
+	}
+	free (path);
+	return SHADOWTCB_SUCCESS;
+out_free_dir:
+	free (dir);
+out_free_path:
+	free (path);
+	return SHADOWTCB_FAILURE;
+}
+
+static shadowtcb_status unlink_suffs (const char *user)
+{
+	static char *suffs[] = { "+", "-", SHADOWTCB_LOCK_SUFFIX };
+	char *tmp;
+	int i;
+
+	for (i = 0; i < 3; i++) {
+		if (asprintf (&tmp, TCB_FMT "%s", user, suffs[i]) == -1) {
+			OUT_OF_MEMORY;
+			return SHADOWTCB_FAILURE;
+		}
+		if ((unlink (tmp) != 0) && (errno != ENOENT)) {
+			fprintf (shadow_logfd,
+			         _("%s: unlink: %s: %s\n"),
+			         shadow_progname, tmp, strerror (errno));
+			free (tmp);
+			return SHADOWTCB_FAILURE;
+		}
+		free (tmp);
+	}
+
+	return SHADOWTCB_SUCCESS;
+}
+
+/* path should be a relative existing tcb directory */
+static shadowtcb_status rmdir_leading (char *path)
+{
+	char *ind, *dir;
+	shadowtcb_status ret = SHADOWTCB_SUCCESS;
+	while ((ind = strrchr (path, '/'))) {
+		*ind = '\0';
+		if (asprintf (&dir, TCB_DIR "/%s", path) == -1) {
+			OUT_OF_MEMORY;
+			return SHADOWTCB_FAILURE;
+		}
+		if (rmdir (dir) != 0) {
+			if (errno != ENOTEMPTY) {
+				fprintf (shadow_logfd,
+				         _("%s: Cannot remove directory %s: %s\n"),
+				         shadow_progname, dir, strerror (errno));
+				ret = SHADOWTCB_FAILURE;
+			}
+			free (dir);
+			break;
+		}
+		free (dir);
+	}
+	return ret;
+}
+
+static shadowtcb_status move_dir (const char *user_newname, uid_t user_newid)
+{
+	char *olddir = NULL, *newdir = NULL;
+	char *real_old_dir = NULL, *real_new_dir = NULL;
+	char *real_old_dir_rel = NULL, *real_new_dir_rel = NULL;
+	uid_t old_uid, the_newid;
+	struct stat oldmode;
+	shadowtcb_status ret = SHADOWTCB_FAILURE;
+
+	if (NULL == stored_tcb_user) {
+		return SHADOWTCB_FAILURE;
+	}
+	if (asprintf (&olddir, TCB_DIR "/%s", stored_tcb_user) == -1) {
+		goto out_free_nomem;
+	}
+	if (stat (olddir, &oldmode) != 0) {
+		fprintf (shadow_logfd,
+		         _("%s: Cannot stat %s: %s\n"),
+		         shadow_progname, olddir, strerror (errno));
+		goto out_free;
+	}
+	old_uid = oldmode.st_uid;
+	the_newid = (user_newid == -1) ? old_uid : user_newid;
+	real_old_dir = shadowtcb_path_existing (stored_tcb_user);
+	if (NULL == real_old_dir) {
+		goto out_free;
+	}
+	real_new_dir = shadowtcb_path (user_newname, the_newid);
+	if (NULL == real_new_dir) {
+		goto out_free;
+	}
+	if (strcmp (real_old_dir, real_new_dir) == 0) {
+		ret = SHADOWTCB_SUCCESS;
+		goto out_free;
+	}
+	real_old_dir_rel = shadowtcb_path_rel_existing (stored_tcb_user);
+	if (NULL == real_old_dir_rel) {
+		goto out_free;
+	}
+	if (mkdir_leading (user_newname, the_newid) == SHADOWTCB_FAILURE) {
+		goto out_free;
+	}
+	if (rename (real_old_dir, real_new_dir) != 0) {
+		fprintf (shadow_logfd,
+		         _("%s: Cannot rename %s to %s: %s\n"),
+		         shadow_progname, real_old_dir, real_new_dir, strerror (errno));
+		goto out_free;
+	}
+	if (rmdir_leading (real_old_dir_rel) == SHADOWTCB_FAILURE) {
+		goto out_free;
+	}
+	if ((unlink (olddir) != 0) && (errno != ENOENT)) {
+		fprintf (shadow_logfd,
+		         _("%s: Cannot remove %s: %s\n"),
+		         shadow_progname, olddir, strerror (errno));
+		goto out_free;
+	}
+	if (asprintf (&newdir, TCB_DIR "/%s", user_newname) == -1) {
+		goto out_free_nomem;
+	}
+	real_new_dir_rel = shadowtcb_path_rel (user_newname, the_newid);
+	if (NULL == real_new_dir_rel) {
+		goto out_free;
+	}
+	if (   (strcmp (real_new_dir, newdir) != 0)
+	    && (symlink (real_new_dir_rel, newdir) != 0)) {
+		fprintf (shadow_logfd,
+		         _("%s: Cannot create symbolic link %s: %s\n"),
+		         shadow_progname, real_new_dir_rel, strerror (errno));
+		goto out_free;
+	}
+	ret = SHADOWTCB_SUCCESS;
+	goto out_free;
+out_free_nomem:
+	OUT_OF_MEMORY;
+out_free:
+	free (olddir);
+	free (newdir);
+	free (real_old_dir);
+	free (real_new_dir);
+	free (real_old_dir_rel);
+	free (real_new_dir_rel);
+	return ret;
+}
+
+shadowtcb_status shadowtcb_set_user (const char* name)
+{
+	char *buf;
+	shadowtcb_status retval;
+
+	if (!getdef_bool ("USE_TCB")) {
+		return SHADOWTCB_SUCCESS;
+	}
+
+	if (NULL != stored_tcb_user) {
+		free (stored_tcb_user);
+	}
+
+	stored_tcb_user = strdup (name);
+	if (NULL == stored_tcb_user) {
+		OUT_OF_MEMORY;
+		return SHADOWTCB_FAILURE;
+	}
+	if (asprintf (&buf, TCB_FMT, name) == -1) {
+		OUT_OF_MEMORY;
+		return SHADOWTCB_FAILURE;
+	}
+
+	retval = (spw_setdbname (buf) != 0) ? SHADOWTCB_SUCCESS : SHADOWTCB_FAILURE;
+	free (buf);
+	return retval;
+}
+
+/* tcb directory must be empty before shadowtcb_remove is called. */
+shadowtcb_status shadowtcb_remove (const char *name)
+{
+	shadowtcb_status ret = SHADOWTCB_SUCCESS;
+	char *path = shadowtcb_path_existing (name);
+	char *rel = shadowtcb_path_rel_existing (name);
+	if ((NULL == path) || (NULL == rel) || (rmdir (path) != 0)) {
+		return SHADOWTCB_FAILURE;
+	}
+	if (rmdir_leading (rel) == SHADOWTCB_FAILURE) {
+		return SHADOWTCB_FAILURE;
+	}
+	free (path);
+	free (rel);
+	if (asprintf (&path, TCB_DIR "/%s", name) == -1) {
+		OUT_OF_MEMORY;
+		return SHADOWTCB_FAILURE;
+	}
+	if ((unlink (path) != 0) && (errno != ENOENT)) {
+		ret = SHADOWTCB_FAILURE;
+	}
+	free (path);
+	return ret;
+}
+
+shadowtcb_status shadowtcb_move (/*@NULL@*/const char *user_newname, uid_t user_newid)
+{
+	struct stat dirmode, filemode;
+	char *tcbdir, *shadow;
+	shadowtcb_status ret = SHADOWTCB_FAILURE;
+
+	if (!getdef_bool ("USE_TCB")) {
+		return SHADOWTCB_SUCCESS;
+	}
+	if (NULL == stored_tcb_user) {
+		return SHADOWTCB_FAILURE;
+	}
+	if (NULL == user_newname) {
+		user_newname = stored_tcb_user;
+	}
+	if (move_dir (user_newname, user_newid) == SHADOWTCB_FAILURE) {
+		return SHADOWTCB_FAILURE;
+	}
+	if (-1 == user_newid) {
+		return SHADOWTCB_SUCCESS;
+	}
+	if (   (asprintf (&tcbdir, TCB_DIR "/%s", user_newname) == -1)
+	    || (asprintf (&shadow, TCB_FMT, user_newname) == -1)) {
+		OUT_OF_MEMORY;
+		return SHADOWTCB_FAILURE;
+	}
+	if (stat (tcbdir, &dirmode) != 0) {
+		fprintf (shadow_logfd,
+		         _("%s: Cannot stat %s: %s\n"),
+		         shadow_progname, tcbdir, strerror (errno));
+		goto out_free;
+	}
+	if (chown (tcbdir, 0, 0) != 0) {
+		fprintf (shadow_logfd,
+		         _("%s: Cannot change owners of %s: %s\n"),
+		         shadow_progname, tcbdir, strerror (errno));
+		goto out_free;
+	}
+	if (chmod (tcbdir, 0700) != 0) {
+		fprintf (shadow_logfd,
+		         _("%s: Cannot change mode of %s: %s\n"),
+		         shadow_progname, tcbdir, strerror (errno));
+		goto out_free;
+	}
+	if (lstat (shadow, &filemode) != 0) {
+		if (errno != ENOENT) {
+			fprintf (shadow_logfd,
+			         _("%s: Cannot lstat %s: %s\n"),
+			         shadow_progname, shadow, strerror (errno));
+			goto out_free;
+		}
+		fprintf (shadow_logfd,
+		         _("%s: Warning, user %s has no tcb shadow file.\n"),
+		         shadow_progname, user_newname);
+	} else {
+		if (!S_ISREG (filemode.st_mode) ||
+			filemode.st_nlink != 1) {
+			fprintf (shadow_logfd,
+			         _("%s: Emergency: %s's tcb shadow is not a "
+			           "regular file with st_nlink=1.\n"
+			           "The account is left locked.\n"),
+			         shadow_progname, user_newname);
+			goto out_free;
+		}
+		if (chown (shadow, user_newid, filemode.st_gid) != 0) {
+			fprintf (shadow_logfd,
+			         _("%s: Cannot change owner of %s: %s\n"),
+			         shadow_progname, shadow, strerror (errno));
+			goto out_free;
+		}
+		if (chmod (shadow, filemode.st_mode & 07777) != 0) {
+			fprintf (shadow_logfd,
+			         _("%s: Cannot change mode of %s: %s\n"),
+			         shadow_progname, shadow, strerror (errno));
+			goto out_free;
+		}
+	}
+	if (unlink_suffs (user_newname) == SHADOWTCB_FAILURE) {
+		goto out_free;
+	}
+	if (chown (tcbdir, user_newid, dirmode.st_gid) != 0) {
+		fprintf (shadow_logfd,
+		         _("%s: Cannot change owner of %s: %s\n"),
+		         shadow_progname, tcbdir, strerror (errno));
+		goto out_free;
+	}
+	if (chmod (tcbdir, dirmode.st_mode & 07777) != 0) {
+		fprintf (shadow_logfd,
+		         _("%s: Cannot change mode of %s: %s\n"),
+		         shadow_progname, tcbdir, strerror (errno));
+		goto out_free;
+	}
+	ret = SHADOWTCB_SUCCESS;
+out_free:
+	free (tcbdir);
+	free (shadow);
+	return ret;
+}
+
+shadowtcb_status shadowtcb_create (const char *name, uid_t uid)
+{
+	char *dir, *shadow;
+	struct stat tcbdir_stat;
+	gid_t shadowgid, authgid;
+	struct group *gr;
+	int fd;
+	shadowtcb_status ret = SHADOWTCB_FAILURE;
+
+	if (!getdef_bool ("USE_TCB")) {
+		return SHADOWTCB_SUCCESS;
+	}
+	if (stat (TCB_DIR, &tcbdir_stat) != 0) {
+		fprintf (shadow_logfd,
+		         _("%s: Cannot stat %s: %s\n"),
+		         shadow_progname, TCB_DIR, strerror (errno));
+		return SHADOWTCB_FAILURE;
+	}
+	shadowgid = tcbdir_stat.st_gid;
+	authgid = shadowgid;
+	if (getdef_bool ("TCB_AUTH_GROUP")) {
+		gr = getgrnam ("auth");
+		if (NULL != gr) {
+			authgid = gr->gr_gid;
+		}
+	}
+
+	if (   (asprintf (&dir, TCB_DIR "/%s", name) == -1)
+	    || (asprintf (&shadow, TCB_FMT, name) == -1)) {
+		OUT_OF_MEMORY;
+		return SHADOWTCB_FAILURE;
+	}
+	if (mkdir (dir, 0700) != 0) {
+		fprintf (shadow_logfd,
+		         _("%s: mkdir: %s: %s\n"),
+		         shadow_progname, dir, strerror (errno));
+		goto out_free;
+	}
+	fd = open (shadow, O_RDWR | O_CREAT | O_TRUNC, 0600);
+	if (fd < 0) {
+		fprintf (shadow_logfd,
+		         _("%s: Cannot open %s: %s\n"),
+		         shadow_progname, shadow, strerror (errno));
+		goto out_free;
+	}
+	close (fd);
+	if (chown (shadow, 0, authgid) != 0) {
+		fprintf (shadow_logfd,
+		         _("%s: Cannot change owner of %s: %s\n"),
+		         shadow_progname, shadow, strerror (errno));
+		goto out_free;
+	}
+	if (chmod (shadow, (mode_t) ((authgid == shadowgid) ? 0600 : 0640)) != 0) {
+		fprintf (shadow_logfd,
+		         _("%s: Cannot change mode of %s: %s\n"),
+		         shadow_progname, shadow, strerror (errno));
+		goto out_free;
+	}
+	if (chown (dir, 0, authgid) != 0) {
+		fprintf (shadow_logfd,
+		         _("%s: Cannot change owner of %s: %s\n"),
+		         shadow_progname, dir, strerror (errno));
+		goto out_free;
+	}
+	if (chmod (dir, (mode_t) ((authgid == shadowgid) ? 02700 : 02710)) != 0) {
+		fprintf (shadow_logfd,
+		         _("%s: Cannot change mode of %s: %s\n"),
+		         shadow_progname, dir, strerror (errno));
+		goto out_free;
+	}
+	if (   (shadowtcb_set_user (name) == SHADOWTCB_FAILURE)
+	    || (shadowtcb_move (NULL, uid) == SHADOWTCB_FAILURE)) {
+		goto out_free;
+	}
+	ret = SHADOWTCB_SUCCESS;
+out_free:
+	free (dir);
+	free (shadow);
+	return ret;
+}
+