d/freebsd-skq
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity
6e855a313a
freebsd-skq/lib/libarchive/archive_check_magic.c

135 lines
3.5 KiB
C
Raw Normal View History

Initial import of libarchive. What it is: A library for reading and writing various streaming archive formats, especially tar and cpio. Being a library, it should be easy to incorporate into pkg_* tools, sysinstall, and any other place that needs to read or write such archives. Features: * Full automatic detection of both compression and archive format. * Extensible internal architecture to make it easy to add new formats. * Support for "pax interchange format," a new POSIX-standard tar format that eliminates essentially all of the restrictions of historic formats. * BSD license Thanks to: jkh for pushing me to start this work, gordon for encouraging me to commit it, bde for answering endless style questions, and many others for feedback and encouragement. Status: Pretty good overall, though there are still a few rough edges and the library could always use more testing. Feedback eagerly solicited.
2004-02-09 23:22:54 +00:00
/*-
Fix the copyright notice; it was always intended to be a vanilla 2-clause BSD license, but somehow some confusing extra verbage get copied from somewhere. Also, update the copyright dates to 2007 for all of the files. Prompted by: several questions about what those extra words really mean
2007-01-09 08:05:56 +00:00
* Copyright (c) 2003-2007 Tim Kientzle
Initial import of libarchive. What it is: A library for reading and writing various streaming archive formats, especially tar and cpio. Being a library, it should be easy to incorporate into pkg_* tools, sysinstall, and any other place that needs to read or write such archives. Features: * Full automatic detection of both compression and archive format. * Extensible internal architecture to make it easy to add new formats. * Support for "pax interchange format," a new POSIX-standard tar format that eliminates essentially all of the restrictions of historic formats. * BSD license Thanks to: jkh for pushing me to start this work, gordon for encouraging me to commit it, bde for answering endless style questions, and many others for feedback and encouragement. Status: Pretty good overall, though there are still a few rough edges and the library could always use more testing. Feedback eagerly solicited.
2004-02-09 23:22:54 +00:00
* 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
Fix the copyright notice; it was always intended to be a vanilla 2-clause BSD license, but somehow some confusing extra verbage get copied from somewhere. Also, update the copyright dates to 2007 for all of the files. Prompted by: several questions about what those extra words really mean
2007-01-09 08:05:56 +00:00
* notice, this list of conditions and the following disclaimer.
Initial import of libarchive. What it is: A library for reading and writing various streaming archive formats, especially tar and cpio. Being a library, it should be easy to incorporate into pkg_* tools, sysinstall, and any other place that needs to read or write such archives. Features: * Full automatic detection of both compression and archive format. * Extensible internal architecture to make it easy to add new formats. * Support for "pax interchange format," a new POSIX-standard tar format that eliminates essentially all of the restrictions of historic formats. * BSD license Thanks to: jkh for pushing me to start this work, gordon for encouraging me to commit it, bde for answering endless style questions, and many others for feedback and encouragement. Status: Pretty good overall, though there are still a few rough edges and the library could always use more testing. Feedback eagerly solicited.
2004-02-09 23:22:54 +00:00
* 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.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR(S) ``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 AUTHOR(S) 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.
*/
Many fixes. Portability: Thanks to Juergen Lock, libarchive now compiles cleanly on Linux. Along the way, I cleaned up a lot of error return codes and reorganized some code to simplify conditional compilation of certain sections. Bug fixes: * pax format now actually stores filenames that are 101-154 characters long. * pax format now allows newline characters in extended attributes (this fixes a long-standing bug in ACL handling) * mtime/atime are now restored for directories * directory list is now sorted prior to fix-up to permit correct restore of non-writable dir heirarchies
2004-03-09 19:50:41 +00:00
#include "archive_platform.h"
Initial import of libarchive. What it is: A library for reading and writing various streaming archive formats, especially tar and cpio. Being a library, it should be easy to incorporate into pkg_* tools, sysinstall, and any other place that needs to read or write such archives. Features: * Full automatic detection of both compression and archive format. * Extensible internal architecture to make it easy to add new formats. * Support for "pax interchange format," a new POSIX-standard tar format that eliminates essentially all of the restrictions of historic formats. * BSD license Thanks to: jkh for pushing me to start this work, gordon for encouraging me to commit it, bde for answering endless style questions, and many others for feedback and encouragement. Status: Pretty good overall, though there are still a few rough edges and the library could always use more testing. Feedback eagerly solicited.
2004-02-09 23:22:54 +00:00
__FBSDID("$FreeBSD$");
Portability and style fixes: * Actually use the HAVE_<header>_H macros to conditionally include system headers. They've been defined for a long time, but only used in a few places. Now they're used pretty consistently throughout. * Fill in a lot of missing casts for conversions from void*. Although Standard C doesn't require this, some people have been trying to use C++ compilers with this code, and they do require it. Bit-for-bit, the compiled object files are identical, except for one assert() whose line number changed, so I'm pretty confident I didn't break anything. ;-)
2006-11-10 06:39:46 +00:00
#ifdef HAVE_SYS_TYPES_H
Many fixes. Portability: Thanks to Juergen Lock, libarchive now compiles cleanly on Linux. Along the way, I cleaned up a lot of error return codes and reorganized some code to simplify conditional compilation of certain sections. Bug fixes: * pax format now actually stores filenames that are 101-154 characters long. * pax format now allows newline characters in extended attributes (this fixes a long-standing bug in ACL handling) * mtime/atime are now restored for directories * directory list is now sorted prior to fix-up to permit correct restore of non-writable dir heirarchies
2004-03-09 19:50:41 +00:00
#include <sys/types.h>
Portability and style fixes: * Actually use the HAVE_<header>_H macros to conditionally include system headers. They've been defined for a long time, but only used in a few places. Now they're used pretty consistently throughout. * Fill in a lot of missing casts for conversions from void*. Although Standard C doesn't require this, some people have been trying to use C++ compilers with this code, and they do require it. Bit-for-bit, the compiled object files are identical, except for one assert() whose line number changed, so I'm pretty confident I didn't break anything. ;-)
2006-11-10 06:39:46 +00:00
#endif
Many fixes. Portability: Thanks to Juergen Lock, libarchive now compiles cleanly on Linux. Along the way, I cleaned up a lot of error return codes and reorganized some code to simplify conditional compilation of certain sections. Bug fixes: * pax format now actually stores filenames that are 101-154 characters long. * pax format now allows newline characters in extended attributes (this fixes a long-standing bug in ACL handling) * mtime/atime are now restored for directories * directory list is now sorted prior to fix-up to permit correct restore of non-writable dir heirarchies
2004-03-09 19:50:41 +00:00
Initial import of libarchive. What it is: A library for reading and writing various streaming archive formats, especially tar and cpio. Being a library, it should be easy to incorporate into pkg_* tools, sysinstall, and any other place that needs to read or write such archives. Features: * Full automatic detection of both compression and archive format. * Extensible internal architecture to make it easy to add new formats. * Support for "pax interchange format," a new POSIX-standard tar format that eliminates essentially all of the restrictions of historic formats. * BSD license Thanks to: jkh for pushing me to start this work, gordon for encouraging me to commit it, bde for answering endless style questions, and many others for feedback and encouragement. Status: Pretty good overall, though there are still a few rough edges and the library could always use more testing. Feedback eagerly solicited.
2004-02-09 23:22:54 +00:00
#include <stdio.h>
Portability and style fixes: * Actually use the HAVE_<header>_H macros to conditionally include system headers. They've been defined for a long time, but only used in a few places. Now they're used pretty consistently throughout. * Fill in a lot of missing casts for conversions from void*. Although Standard C doesn't require this, some people have been trying to use C++ compilers with this code, and they do require it. Bit-for-bit, the compiled object files are identical, except for one assert() whose line number changed, so I'm pretty confident I didn't break anything. ;-)
2006-11-10 06:39:46 +00:00
#ifdef HAVE_STDLIB_H
#include <stdlib.h>
#endif
#ifdef HAVE_STRING_H
Initial import of libarchive. What it is: A library for reading and writing various streaming archive formats, especially tar and cpio. Being a library, it should be easy to incorporate into pkg_* tools, sysinstall, and any other place that needs to read or write such archives. Features: * Full automatic detection of both compression and archive format. * Extensible internal architecture to make it easy to add new formats. * Support for "pax interchange format," a new POSIX-standard tar format that eliminates essentially all of the restrictions of historic formats. * BSD license Thanks to: jkh for pushing me to start this work, gordon for encouraging me to commit it, bde for answering endless style questions, and many others for feedback and encouragement. Status: Pretty good overall, though there are still a few rough edges and the library could always use more testing. Feedback eagerly solicited.
2004-02-09 23:22:54 +00:00
#include <string.h>
Portability and style fixes: * Actually use the HAVE_<header>_H macros to conditionally include system headers. They've been defined for a long time, but only used in a few places. Now they're used pretty consistently throughout. * Fill in a lot of missing casts for conversions from void*. Although Standard C doesn't require this, some people have been trying to use C++ compilers with this code, and they do require it. Bit-for-bit, the compiled object files are identical, except for one assert() whose line number changed, so I'm pretty confident I didn't break anything. ;-)
2006-11-10 06:39:46 +00:00
#endif
#ifdef HAVE_UNISTD_H
Initial import of libarchive. What it is: A library for reading and writing various streaming archive formats, especially tar and cpio. Being a library, it should be easy to incorporate into pkg_* tools, sysinstall, and any other place that needs to read or write such archives. Features: * Full automatic detection of both compression and archive format. * Extensible internal architecture to make it easy to add new formats. * Support for "pax interchange format," a new POSIX-standard tar format that eliminates essentially all of the restrictions of historic formats. * BSD license Thanks to: jkh for pushing me to start this work, gordon for encouraging me to commit it, bde for answering endless style questions, and many others for feedback and encouragement. Status: Pretty good overall, though there are still a few rough edges and the library could always use more testing. Feedback eagerly solicited.
2004-02-09 23:22:54 +00:00
#include <unistd.h>
Portability and style fixes: * Actually use the HAVE_<header>_H macros to conditionally include system headers. They've been defined for a long time, but only used in a few places. Now they're used pretty consistently throughout. * Fill in a lot of missing casts for conversions from void*. Although Standard C doesn't require this, some people have been trying to use C++ compilers with this code, and they do require it. Bit-for-bit, the compiled object files are identical, except for one assert() whose line number changed, so I'm pretty confident I didn't break anything. ;-)
2006-11-10 06:39:46 +00:00
#endif
Merge from libarchive.googlecode.com: Mostly a bunch of corrections to the Windows support to reconcile differences between Visual Studio and Cygwin. Includes parts of revisions 757, 774, 787, 815, 817, 819, 820, 844, and 886. Of particular note, r886 overhauled the UTF-8/Unicode conversions to work correctly regardless of whether the local system uses 16-bit or 32-bit wchar_t. (I assume that systems with 16-bit wchar_t use UTF-16 and those with 32-bit wchar_t use UCS-4.) This revision also added a preference for wcrtomb() (which is thread-safe) on platforms that support it.
2009-04-12 05:33:34 +00:00
#if defined(_WIN32) && !defined(__CYGWIN__)
Merge r356 and r358 from libarchive.googlecode.com: Remove a Windows special case from archive_entry.c, add one to archive_check_magic.c.
2009-03-05 00:44:12 +00:00
#include <windows.h>
#include <winbase.h>
#endif
Initial import of libarchive. What it is: A library for reading and writing various streaming archive formats, especially tar and cpio. Being a library, it should be easy to incorporate into pkg_* tools, sysinstall, and any other place that needs to read or write such archives. Features: * Full automatic detection of both compression and archive format. * Extensible internal architecture to make it easy to add new formats. * Support for "pax interchange format," a new POSIX-standard tar format that eliminates essentially all of the restrictions of historic formats. * BSD license Thanks to: jkh for pushing me to start this work, gordon for encouraging me to commit it, bde for answering endless style questions, and many others for feedback and encouragement. Status: Pretty good overall, though there are still a few rough edges and the library could always use more testing. Feedback eagerly solicited.
2004-02-09 23:22:54 +00:00
#include "archive_private.h"
Don't rely on stdio here.
2004-10-17 23:35:16 +00:00
static void
errmsg(const char *m)
{
Portability: terminate abnormally via abort() instead of segfault, watch the return value from write(), and avoid signed arithmetic on unsigned values.
2009-12-28 02:20:23 +00:00
size_t s = strlen(m);
ssize_t written;
while (s > 0) {
written = write(2, m, strlen(m));
if (written <= 0)
return;
m += written;
s -= written;
}
Don't rely on stdio here.
2004-10-17 23:35:16 +00:00
}
Initial import of libarchive. What it is: A library for reading and writing various streaming archive formats, especially tar and cpio. Being a library, it should be easy to incorporate into pkg_* tools, sysinstall, and any other place that needs to read or write such archives. Features: * Full automatic detection of both compression and archive format. * Extensible internal architecture to make it easy to add new formats. * Support for "pax interchange format," a new POSIX-standard tar format that eliminates essentially all of the restrictions of historic formats. * BSD license Thanks to: jkh for pushing me to start this work, gordon for encouraging me to commit it, bde for answering endless style questions, and many others for feedback and encouragement. Status: Pretty good overall, though there are still a few rough edges and the library could always use more testing. Feedback eagerly solicited.
2004-02-09 23:22:54 +00:00
static void
diediedie(void)
{
Merge from libarchive.googlecode.com: Mostly a bunch of corrections to the Windows support to reconcile differences between Visual Studio and Cygwin. Includes parts of revisions 757, 774, 787, 815, 817, 819, 820, 844, and 886. Of particular note, r886 overhauled the UTF-8/Unicode conversions to work correctly regardless of whether the local system uses 16-bit or 32-bit wchar_t. (I assume that systems with 16-bit wchar_t use UTF-16 and those with 32-bit wchar_t use UCS-4.) This revision also added a preference for wcrtomb() (which is thread-safe) on platforms that support it.
2009-04-12 05:33:34 +00:00
#if defined(_WIN32) && !defined(__CYGWIN__) && defined(_DEBUG)
Merge r356 and r358 from libarchive.googlecode.com: Remove a Windows special case from archive_entry.c, add one to archive_check_magic.c.
2009-03-05 00:44:12 +00:00
/* Cause a breakpoint exception */
DebugBreak();
#endif
Portability: terminate abnormally via abort() instead of segfault, watch the return value from write(), and avoid signed arithmetic on unsigned values.
2009-12-28 02:20:23 +00:00
abort(); /* Terminate the program abnormally. */
Initial import of libarchive. What it is: A library for reading and writing various streaming archive formats, especially tar and cpio. Being a library, it should be easy to incorporate into pkg_* tools, sysinstall, and any other place that needs to read or write such archives. Features: * Full automatic detection of both compression and archive format. * Extensible internal architecture to make it easy to add new formats. * Support for "pax interchange format," a new POSIX-standard tar format that eliminates essentially all of the restrictions of historic formats. * BSD license Thanks to: jkh for pushing me to start this work, gordon for encouraging me to commit it, bde for answering endless style questions, and many others for feedback and encouragement. Status: Pretty good overall, though there are still a few rough edges and the library could always use more testing. Feedback eagerly solicited.
2004-02-09 23:22:54 +00:00
}
static const char *
state_name(unsigned s)
{
switch (s) {
case ARCHIVE_STATE_NEW: return ("new");
case ARCHIVE_STATE_HEADER: return ("header");
case ARCHIVE_STATE_DATA: return ("data");
case ARCHIVE_STATE_EOF: return ("eof");
case ARCHIVE_STATE_CLOSED: return ("closed");
case ARCHIVE_STATE_FATAL: return ("fatal");
default: return ("??");
}
}
static void
Style: bare "unsigned" is deprecated, use "unsigned int" instead. Thanks to: Joerg Sonnenberger
2007-04-02 00:15:45 +00:00
write_all_states(unsigned int states)
Initial import of libarchive. What it is: A library for reading and writing various streaming archive formats, especially tar and cpio. Being a library, it should be easy to incorporate into pkg_* tools, sysinstall, and any other place that needs to read or write such archives. Features: * Full automatic detection of both compression and archive format. * Extensible internal architecture to make it easy to add new formats. * Support for "pax interchange format," a new POSIX-standard tar format that eliminates essentially all of the restrictions of historic formats. * BSD license Thanks to: jkh for pushing me to start this work, gordon for encouraging me to commit it, bde for answering endless style questions, and many others for feedback and encouragement. Status: Pretty good overall, though there are still a few rough edges and the library could always use more testing. Feedback eagerly solicited.
2004-02-09 23:22:54 +00:00
{
Style: bare "unsigned" is deprecated, use "unsigned int" instead. Thanks to: Joerg Sonnenberger
2007-04-02 00:15:45 +00:00
unsigned int lowbit;
Initial import of libarchive. What it is: A library for reading and writing various streaming archive formats, especially tar and cpio. Being a library, it should be easy to incorporate into pkg_* tools, sysinstall, and any other place that needs to read or write such archives. Features: * Full automatic detection of both compression and archive format. * Extensible internal architecture to make it easy to add new formats. * Support for "pax interchange format," a new POSIX-standard tar format that eliminates essentially all of the restrictions of historic formats. * BSD license Thanks to: jkh for pushing me to start this work, gordon for encouraging me to commit it, bde for answering endless style questions, and many others for feedback and encouragement. Status: Pretty good overall, though there are still a few rough edges and the library could always use more testing. Feedback eagerly solicited.
2004-02-09 23:22:54 +00:00
/* A trick for computing the lowest set bit. */
Portability: terminate abnormally via abort() instead of segfault, watch the return value from write(), and avoid signed arithmetic on unsigned values.
2009-12-28 02:20:23 +00:00
while ((lowbit = states & (1 + ~states)) != 0) {
Initial import of libarchive. What it is: A library for reading and writing various streaming archive formats, especially tar and cpio. Being a library, it should be easy to incorporate into pkg_* tools, sysinstall, and any other place that needs to read or write such archives. Features: * Full automatic detection of both compression and archive format. * Extensible internal architecture to make it easy to add new formats. * Support for "pax interchange format," a new POSIX-standard tar format that eliminates essentially all of the restrictions of historic formats. * BSD license Thanks to: jkh for pushing me to start this work, gordon for encouraging me to commit it, bde for answering endless style questions, and many others for feedback and encouragement. Status: Pretty good overall, though there are still a few rough edges and the library could always use more testing. Feedback eagerly solicited.
2004-02-09 23:22:54 +00:00
states &= ~lowbit; /* Clear the low bit. */
Don't rely on stdio here.
2004-10-17 23:35:16 +00:00
errmsg(state_name(lowbit));
if (states != 0)
errmsg("/");
Initial import of libarchive. What it is: A library for reading and writing various streaming archive formats, especially tar and cpio. Being a library, it should be easy to incorporate into pkg_* tools, sysinstall, and any other place that needs to read or write such archives. Features: * Full automatic detection of both compression and archive format. * Extensible internal architecture to make it easy to add new formats. * Support for "pax interchange format," a new POSIX-standard tar format that eliminates essentially all of the restrictions of historic formats. * BSD license Thanks to: jkh for pushing me to start this work, gordon for encouraging me to commit it, bde for answering endless style questions, and many others for feedback and encouragement. Status: Pretty good overall, though there are still a few rough edges and the library could always use more testing. Feedback eagerly solicited.
2004-02-09 23:22:54 +00:00
}
}
/*
* Check magic value and current state; bail if it isn't valid.
*
* This is designed to catch serious programming errors that violate
* the libarchive API.
*/
void
Style: bare "unsigned" is deprecated, use "unsigned int" instead. Thanks to: Joerg Sonnenberger
2007-04-02 00:15:45 +00:00
__archive_check_magic(struct archive *a, unsigned int magic,
unsigned int state, const char *function)
Initial import of libarchive. What it is: A library for reading and writing various streaming archive formats, especially tar and cpio. Being a library, it should be easy to incorporate into pkg_* tools, sysinstall, and any other place that needs to read or write such archives. Features: * Full automatic detection of both compression and archive format. * Extensible internal architecture to make it easy to add new formats. * Support for "pax interchange format," a new POSIX-standard tar format that eliminates essentially all of the restrictions of historic formats. * BSD license Thanks to: jkh for pushing me to start this work, gordon for encouraging me to commit it, bde for answering endless style questions, and many others for feedback and encouragement. Status: Pretty good overall, though there are still a few rough edges and the library could always use more testing. Feedback eagerly solicited.
2004-02-09 23:22:54 +00:00
{
if (a->magic != magic) {
Don't rely on stdio here.
2004-10-17 23:35:16 +00:00
errmsg("INTERNAL ERROR: Function ");
errmsg(function);
errmsg(" invoked with invalid struct archive structure.\n");
Initial import of libarchive. What it is: A library for reading and writing various streaming archive formats, especially tar and cpio. Being a library, it should be easy to incorporate into pkg_* tools, sysinstall, and any other place that needs to read or write such archives. Features: * Full automatic detection of both compression and archive format. * Extensible internal architecture to make it easy to add new formats. * Support for "pax interchange format," a new POSIX-standard tar format that eliminates essentially all of the restrictions of historic formats. * BSD license Thanks to: jkh for pushing me to start this work, gordon for encouraging me to commit it, bde for answering endless style questions, and many others for feedback and encouragement. Status: Pretty good overall, though there are still a few rough edges and the library could always use more testing. Feedback eagerly solicited.
2004-02-09 23:22:54 +00:00
diediedie();
}
if (state == ARCHIVE_STATE_ANY)
return;
if ((a->state & state) == 0) {
Don't rely on stdio here.
2004-10-17 23:35:16 +00:00
errmsg("INTERNAL ERROR: Function '");
errmsg(function);
errmsg("' invoked with archive structure in state '");
write_all_states(a->state);
errmsg("', should be in state '");
write_all_states(state);
errmsg("'\n");
Initial import of libarchive. What it is: A library for reading and writing various streaming archive formats, especially tar and cpio. Being a library, it should be easy to incorporate into pkg_* tools, sysinstall, and any other place that needs to read or write such archives. Features: * Full automatic detection of both compression and archive format. * Extensible internal architecture to make it easy to add new formats. * Support for "pax interchange format," a new POSIX-standard tar format that eliminates essentially all of the restrictions of historic formats. * BSD license Thanks to: jkh for pushing me to start this work, gordon for encouraging me to commit it, bde for answering endless style questions, and many others for feedback and encouragement. Status: Pretty good overall, though there are still a few rough edges and the library could always use more testing. Feedback eagerly solicited.
2004-02-09 23:22:54 +00:00
diediedie();
}
}
Reference in New Issue Copy Permalink