6f57f7c601
All updates and fixes applied from upstream libtar as of March 1, 2016. Debug flag is disabled, however non-debug output now provides 1 line of useful output per object extracted. I've also merged some fixes from CyanogenMod's fork of libtar: From: Tom Marshall <tdm@cyngn.com> Date: Thu, 11 Feb 2016 16:24:40 -0800 Subject: libtar: Cleanup, secure, and extend numeric fields Commit: e18b457ea1cbf6be1adc3b75450ed1c737cd82ea From: Tom Marshall <tdm@cyngn.com> Date: Thu, 11 Feb 2016 12:49:30 -0800 Subject: libtar: Make file sizes 64-bit clean Commit: e628c2025549a24018bc568351465130a05daafb From: Tom Marshall <tdm@cyngn.com> Date: Thu, 17 Apr 2014 09:39:25 -0700 Subject: libtar: Add methods for in-memory files Commit: 8ec5627a8ff0a91724c6d5b344f0e887da922527 From: Tom Marshall <tdm@cyngn.com> Date: Wed, 2 Jul 2014 09:34:40 -0700 Subject: libtar: Fix hardlink extract Commit: 166d83a51e0c51abcea37694dbd7df92d03c1f56 From: philz-cwm6 <phytowardt@gmail.com> Date: Sat, 26 Apr 2014 01:11:35 +0200 Subject: libtar: Various bug fixes and enhancements Commit: a271d763e94235ccee9ecaabdb52bf4b9b2f8c06 (Some of this was not merged in, as better solutions were available from upstream libtar) From: Tom Marshall <tdm@cyngn.com> Date: Wed, 9 Apr 2014 09:35:54 -0700 Subject: libtar: Add const qualifiers to reduce compile warnings Commit: 0600afa19fe827d06d3fcf24a7aabd52dbf487b4 Change-Id: I6d008cb6fdf950f835bbed63aeb8727cc5c86083
136 lines
2.3 KiB
C
136 lines
2.3 KiB
C
/*
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** Copyright 1998-2003 University of Illinois Board of Trustees
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** Copyright 1998-2003 Mark D. Roth
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** All rights reserved.
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**
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** decode.c - libtar code to decode tar header blocks
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**
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** Mark D. Roth <roth@uiuc.edu>
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** Campus Information Technologies and Educational Services
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** University of Illinois at Urbana-Champaign
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*/
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#include <internal.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <sys/param.h>
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#include <pwd.h>
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#include <grp.h>
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#ifdef STDC_HEADERS
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# include <string.h>
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#endif
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/* determine full path name */
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char *
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th_get_pathname(TAR *t)
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{
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if (t->th_buf.gnu_longname)
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return t->th_buf.gnu_longname;
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/* allocate the th_pathname buffer if not already */
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if (t->th_pathname == NULL)
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{
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t->th_pathname = malloc(MAXPATHLEN * sizeof(char));
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if (t->th_pathname == NULL)
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/* out of memory */
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return NULL;
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}
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if (t->th_buf.prefix[0] == '\0')
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{
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snprintf(t->th_pathname, MAXPATHLEN, "%.100s", t->th_buf.name);
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}
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else
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{
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snprintf(t->th_pathname, MAXPATHLEN, "%.155s/%.100s",
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t->th_buf.prefix, t->th_buf.name);
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}
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/* will be deallocated in tar_close() */
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return t->th_pathname;
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}
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uid_t
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th_get_uid(TAR *t)
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{
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int uid;
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struct passwd *pw;
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if (!(t->options & TAR_USE_NUMERIC_ID)) {
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pw = getpwnam(t->th_buf.uname);
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if (pw != NULL)
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return pw->pw_uid;
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}
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/* if the password entry doesn't exist */
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sscanf(t->th_buf.uid, "%o", &uid);
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return uid;
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}
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gid_t
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th_get_gid(TAR *t)
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{
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int gid;
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struct group *gr;
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if (!(t->options & TAR_USE_NUMERIC_ID)) {
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gr = getgrnam(t->th_buf.gname);
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if (gr != NULL)
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return gr->gr_gid;
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}
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/* if the group entry doesn't exist */
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sscanf(t->th_buf.gid, "%o", &gid);
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return gid;
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}
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mode_t
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th_get_mode(TAR *t)
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{
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mode_t mode;
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mode = (mode_t)oct_to_int(t->th_buf.mode, sizeof(t->th_buf.mode));
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if (! (mode & S_IFMT))
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{
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switch (t->th_buf.typeflag)
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{
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case SYMTYPE:
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mode |= S_IFLNK;
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break;
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case CHRTYPE:
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mode |= S_IFCHR;
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break;
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case BLKTYPE:
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mode |= S_IFBLK;
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break;
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case DIRTYPE:
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mode |= S_IFDIR;
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break;
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case FIFOTYPE:
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mode |= S_IFIFO;
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break;
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case AREGTYPE:
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if (t->th_buf.name[strnlen(t->th_buf.name, T_NAMELEN) - 1] == '/')
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{
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mode |= S_IFDIR;
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break;
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}
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/* FALLTHROUGH */
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case LNKTYPE:
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case REGTYPE:
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default:
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mode |= S_IFREG;
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}
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}
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return mode;
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}
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