Commit Graph

15 Commits

Author SHA1 Message Date
Tim Kientzle
0f412b97da Remove the C99-specific __func__ that is one of the few barrier to
compiling on IRIX and Solaris.  Remove the "archive_check_magic" macro
that existed only to provide __func__ to the underlying __archive_check_magic
function.

Thanks to: Darin Broady
MFC after: 14 days
2005-06-01 15:52:39 +00:00
Tim Kientzle
81a4ac6ddb A number of improvements to ZIP support.
* Handles entries with compressed size >2GB (signed/unsigned cleanup)
  * Handles entries with compressed size >4GB ("ZIP64" extension)
  * Handles Unix extensions (ctime, atime, mtime, mode, uid, etc)
  * Format-specific "skip data" override allows ZIP reader to skip
    entries without decompressing them, which makes "tar -t"
    a lot faster.
  * Handles "length-at-end" entries generated by, e.g., "zip -r - foo"

Many thanks to: Dan Nelson, who contributed the code and test files for
   the first three items above and suggested the fourth.
2005-04-06 04:19:30 +00:00
Tim Kientzle
49f9f01a7f Clear the error buffer on entry
to archive_read_next_header so the
next error doesn't just get appended.

MFC after: 7 days
2005-01-08 18:28:11 +00:00
Tim Kientzle
57b665990a Eliminate reliance on non-portable <err.h> by implementing a very
simple errx() function.
Improve behavior when bzlib/zlib are missing by detecting and
issuing an error message on attempts to read gzip/bzip2 compressed
archives.
2004-08-14 03:45:45 +00:00
Tim Kientzle
91ce8f27d8 Split archive_{read,write}_finish into separate "close" (finish the archive
and close it) and "finish" (destroy the object) functions.   For backwards
compat and simplicity, have "finish" invoke "close" transparently if needed.
This allows clients to close the archive and check end-of-operation
statistics before destroying the object.
2004-08-07 19:22:50 +00:00
Tim Kientzle
2b68caa0f2 Correctly reset archive_read_data state everytime a header is read. 2004-06-04 23:25:20 +00:00
Tim Kientzle
1a74b99db7 Be more careful about the initial read (used for "tasting" the compression):
* Check for and return input errors
  * Treat empty file (zero-length read) as a fatal error
2004-06-04 01:36:10 +00:00
Tim Kientzle
a8659f8468 Refactor the extraction code somewhat. In particular,
push extract data down into archive_read_extract.c and out
of the library-global archive_private.h; push dir-specific
mode/time fixup down into dir restore function; now that the
fixup list is file-local, I can use somewhat more natural
naming.

Oh, yeah, update a bunch of comments to match current reality.
2004-06-03 23:29:47 +00:00
Tim Kientzle
e250dd4fad Refactor read_data:
* New read_data_block is both sparse-file aware and uses zero-copy semantics
 * Push read_data_block down into specific formats (opens door to
   various encoded entry bodies, such as zip or gtar -S)
 * Reimplement read_data, read_data_skip, read_data_into_fd in terms
   of new read_data_block.
 * Update documentation
It's unfortunate that I couldn't just call the new interface
archive_read_data, but didn't want to upset the API that much.
2004-06-02 08:14:43 +00:00
Tim Kientzle
d911e48507 * Plug a buffer overrun in ACL parsing. (archive_entry.c)
* Re-use a single buffer for shar output formatting rather
   than hammering the heap. (archive_write_set_format_shar.c)
 * Fix a handful of minor memory leaks and clean up some of the
   memory-management code.
2004-04-13 23:45:37 +00:00
Tim Kientzle
aee47dd7c8 More work on ACLs: fix error in archive_entry's ACL parsing code,
try to set ACLs even if fflag restore fails, first cut at reading
  Solaris tar ACLs

Code improvement: merge gnu tar read support into main tar reader;
  this eliminates a lot of duplicate code and generalizes the tar
  reader to handle formats with GNU-like extensions.

Style: Makefile cleanup, eliminate 'dmalloc' references, remove 'tartype'
  from archive_entry (this makes archive_entry more format-agnostic)

Thanks to: David Magda for providing Solaris tar test files
2004-04-12 01:16:16 +00:00
Tim Kientzle
71b44796d9 Overhauled ACL support. This makes us compatible
with 'star' ACL handling, though there's still a
bit more work needed in this area.

Added 'write_open_fd' and 'read_open_fd' to simplify, e.g.,
tar's u and r modes.  Eliminated old 'write_open_file_position'
as a bad idea.  (It required closing/reopening files to
do updates, which led to unpleasant implications.)

Various other minor fixes, API tweaks, etc.
2004-04-05 21:12:29 +00:00
Tim Kientzle
44a3d34206 Many fixes:
* Disabled shared-library building, as some API breakage is
  still likely.  (I didn't realize it was turned on by default.)  If
  you have an existing /usr/lib/libarchive.so.2, I recommend deleting it.
* Pax interchange format now correctly stores and reads UTF8
  for extended attributes.  In particular, pax format can portably
  handle arbitrarily long pathnames containing arbitrary characters.
* Library compiles cleanly at -O2, -O3, and WARNS=6 on all
  FreeBSD-CURRENT platforms.
* Minor portability improvements inspired by Juergen Lock
  and Greg Lewis.  (Less reliance on stdint.h, isolating of
  various portability-challenged constructs.)
* archive_entry transparently converts multi-byte <-> wide character
  strings, allowing clients and format handlers to deal with either
  one, as appropriate.
* Support for reading 'L' and 'K' entries in standard tar archives
  for star compatibility.
* Recognize (but don't yet handle) ACL entries from Solaris tar.
* Pushed format-specific data for format readers down into
  format-specific storage and out of library-global storage.  This
  should make it easier to maintain individual formats without mucking
  with the core library management.
* Documentation updates to track the above changes.
* Updates to tar.5 to correct a few mistakes and add some additional
  information about GNU tar and Solaris tar formats.

Notes:
* The basic 'tar' reader is getting more general; there's not much
  point in keeping the 'gnutar' reader separate.  Merging the two
  would lose a bunch of duplicate code.
* The libc ACL support is looking increasingly inadequate for my needs
  here.  I might need to assemble some fairly significant code for
  parsing and building ACLs. <sigh>
2004-03-19 22:37:06 +00:00
Tim Kientzle
df3c1316b0 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
Tim Kientzle
2710e4d1ef 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