Imported Upstream version 4.1.5.1
This commit is contained in:
Christian Perrier
+261
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/*
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* Copyright (c) 1990 - 1994, Julianne Frances Haugh
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* Copyright (c) 1996 - 2000, Marek Michałkiewicz
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* Copyright (c) 2001 , Michał Moskal
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* Copyright (c) 2005 , Tomasz Kłoczko
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* Copyright (c) 2007 - 2009, Nicolas François
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. The name of the copyright holders or contributors may not be used to
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* endorse or promote products derived from this software without
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* specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
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* PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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* HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#include <config.h>
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#ident "$Id: shadowio.c 3296 2011-02-16 20:32:16Z nekral-guest $"
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#include "prototypes.h"
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#include "defines.h"
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#include <shadow.h>
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#include <stdio.h>
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#include "commonio.h"
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#include "shadowio.h"
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#ifdef WITH_TCB
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#include <tcb.h>
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#include "tcbfuncs.h"
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#endif /* WITH_TCB */
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static /*@null@*/ /*@only@*/void *shadow_dup (const void *ent)
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{
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const struct spwd *sp = ent;
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return __spw_dup (sp);
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}
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static void shadow_free (/*@out@*//*@only@*/void *ent)
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{
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struct spwd *sp = ent;
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spw_free (sp);
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}
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static const char *shadow_getname (const void *ent)
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{
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const struct spwd *sp = ent;
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return sp->sp_namp;
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}
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static void *shadow_parse (const char *line)
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{
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return (void *) sgetspent (line);
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}
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static int shadow_put (const void *ent, FILE * file)
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{
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const struct spwd *sp = ent;
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if ( (NULL == sp)
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|| (valid_field (sp->sp_namp, ":\n") == -1)
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|| (valid_field (sp->sp_pwdp, ":\n") == -1)) {
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return -1;
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}
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return (putspent (sp, file) == -1) ? -1 : 0;
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}
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static struct commonio_ops shadow_ops = {
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shadow_dup,
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shadow_free,
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shadow_getname,
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shadow_parse,
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shadow_put,
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fgets,
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fputs,
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NULL, /* open_hook */
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NULL /* close_hook */
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};
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static struct commonio_db shadow_db = {
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SHADOW_FILE, /* filename */
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&shadow_ops, /* ops */
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NULL, /* fp */
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#ifdef WITH_SELINUX
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NULL, /* scontext */
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#endif /* WITH_SELINUX */
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NULL, /* head */
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NULL, /* tail */
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NULL, /* cursor */
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false, /* changed */
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false, /* isopen */
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false, /* locked */
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false /* readonly */
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};
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int spw_setdbname (const char *filename)
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{
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return commonio_setname (&shadow_db, filename);
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}
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/*@observer@*/const char *spw_dbname (void)
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{
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return shadow_db.filename;
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}
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bool spw_file_present (void)
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{
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return commonio_present (&shadow_db);
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}
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int spw_lock (void)
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{
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#ifdef WITH_TCB
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int retval = 0;
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if (!getdef_bool ("USE_TCB")) {
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#endif /* WITH_TCB */
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return commonio_lock (&shadow_db);
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#ifdef WITH_TCB
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}
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if (shadowtcb_drop_priv () == SHADOWTCB_FAILURE) {
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return 0;
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}
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if (lckpwdf_tcb (shadow_db.filename) == 0) {
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shadow_db.locked = 1;
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retval = 1;
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}
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if (shadowtcb_gain_priv () == SHADOWTCB_FAILURE) {
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return 0;
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}
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return retval;
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#endif /* WITH_TCB */
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}
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int spw_open (int mode)
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{
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int retval = 0;
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#ifdef WITH_TCB
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bool use_tcb = getdef_bool ("USE_TCB");
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if (use_tcb && (shadowtcb_drop_priv () == SHADOWTCB_FAILURE)) {
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return 0;
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}
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#endif /* WITH_TCB */
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retval = commonio_open (&shadow_db, mode);
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#ifdef WITH_TCB
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if (use_tcb && (shadowtcb_gain_priv () == SHADOWTCB_FAILURE)) {
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return 0;
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}
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#endif /* WITH_TCB */
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return retval;
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}
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/*@observer@*/ /*@null@*/const struct spwd *spw_locate (const char *name)
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{
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return commonio_locate (&shadow_db, name);
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}
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int spw_update (const struct spwd *sp)
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{
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return commonio_update (&shadow_db, (const void *) sp);
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}
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int spw_remove (const char *name)
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{
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return commonio_remove (&shadow_db, name);
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}
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int spw_rewind (void)
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{
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return commonio_rewind (&shadow_db);
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}
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/*@observer@*/ /*@null@*/const struct spwd *spw_next (void)
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{
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return commonio_next (&shadow_db);
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}
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int spw_close (void)
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{
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int retval = 0;
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#ifdef WITH_TCB
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bool use_tcb = getdef_bool ("USE_TCB");
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if (use_tcb && (shadowtcb_drop_priv () == SHADOWTCB_FAILURE)) {
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return 0;
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}
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#endif /* WITH_TCB */
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retval = commonio_close (&shadow_db);
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#ifdef WITH_TCB
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if (use_tcb && (shadowtcb_gain_priv () == SHADOWTCB_FAILURE)) {
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return 0;
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}
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#endif /* WITH_TCB */
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return retval;
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}
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int spw_unlock (void)
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{
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#ifdef WITH_TCB
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int retval = 0;
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if (!getdef_bool ("USE_TCB")) {
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#endif /* WITH_TCB */
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return commonio_unlock (&shadow_db);
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#ifdef WITH_TCB
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}
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if (shadowtcb_drop_priv () == SHADOWTCB_FAILURE) {
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return 0;
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}
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if (ulckpwdf_tcb () == 0) {
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shadow_db.locked = 0;
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retval = 1;
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}
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if (shadowtcb_gain_priv () == SHADOWTCB_FAILURE) {
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return 0;
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}
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return retval;
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#endif /* WITH_TCB */
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}
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struct commonio_entry *__spw_get_head (void)
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{
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return shadow_db.head;
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}
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void __spw_del_entry (const struct commonio_entry *ent)
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{
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commonio_del_entry (&shadow_db, ent);
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}
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/* Sort with respect to passwd ordering. */
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int spw_sort ()
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{
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#ifdef WITH_TCB
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if (getdef_bool ("USE_TCB")) {
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return 0;
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}
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#endif /* WITH_TCB */
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return commonio_sort_wrt (&shadow_db, __pw_get_db ());
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}
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