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Casting to Int32 or int could create negative values. Which isspace
and isdigit don't handle. SEI CERT C Coding Standard STR37-C.
Resolve by casting to UChar or unsigned char instead of Int32 or int.
https://sourceware.org/bugzilla/show_bug.cgi?id=28283
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We try to be smart in sendMTFValues by initializing just nGroups
number of elements instead of all BZ_N_GROUPS elements. But this means
the compiler doesn't know all elements are correctly initialized and
might warn. The arrays are really small, BZ_N_GROUPS, 6 elements. And
nGroups == BZ_N_GROUPS is the common case. So just initialize them all
always. Using a constant loop might also help the compiler to optimize
the initialization.
https://sourceware.org/bugzilla/show_bug.cgi?id=28904
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This makes sure all commands show up as bold in the man pages.
Suggested-by: Helge Kreutzmann <debian@helgefjell.de>
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STDERR_FILENO is *nix specific and is not defined under MSVC.
So define it using _fileno(stderr).
Suggested-by: Dmitry Tsarevich <dimhotepus@gmail.com>
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GCC10 -fanalyzer notices that we try to call functions that are not
signal safe from our fatal signal handler:
bzip2.c: In function ‘mySIGSEGVorSIGBUScatcher’:
bzip2.c:819:7: warning: call to ‘fprintf’ from within signal handler
[CWE-479] [-Wanalyzer-unsafe-call-within-signal-handler]
It also notices we then call showFileNames and cleanupAndFail which
also call possibly not signal safe functions.
Just write out the error message directly to STDERR and exit without
trying to clean up any files.
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BZ_SEQUENCE_ERROR can be returned if BZ2_bzDecompress is called after
an earlier call already returned BZ_STREAM_END.
Reported-by: Vanessa McHale <vamchale@gmail.com>
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And remove both pages from the repository since the will now be
generated by make dist. Also don't try to update them in
prepare-release.sh script.
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Bug-Debian: https://bugs.debian.org/517257
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Author: Bjarni Ingi Gislason
Bug-Debian: https://bugs.debian.org/675380
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Otherwise the generated HTML will have a different randomly generated
name id which generates spurious diffs.
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The bzgrep wrapper always returns 0 as exit code when working on
multiple archives, even when the pattern is not found.
Fix from openSUSE by Kristýna Streitová <kstreitova@suse.com>
https://bugzilla.suse.com/970260
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bzgrep uses ${var//} which is a bashism.
Replace by calling sed so other POSIX shells work.
Patch from openSUSE by Led <ledest@gmail.com>
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The bzdiff script doesn't contain enough quotes, so that it doesn't
work if the TMPDIR environment variable is defined and contains
spaces.
https://bugs.debian.org/493710
Author: Vincent Lefevre <vincent@vinc17.org>
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Keep Julian's email as author information, but redirect general
project feedback in the code and manual to the community mailinglist.
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But ignore any larger than the theoretical maximum, BZ_MAX_SELECTORS.
The theoretical maximum number of selectors depends on the maximum
blocksize (900000 bytes) and the number of symbols (50) that can be
encoded with a different Huffman tree. BZ_MAX_SELECTORS is 18002.
But the bzip2 file format allows the number of selectors to be encoded
with 15 bits (because 18002 isn't a factor of 2 and doesn't fit in
14 bits). So the file format maximum is 32767 selectors.
Some bzip2 encoders might actually have written out more selectors
than the theoretical maximum because they rounded up the number of
selectors to some convenient factor of 8.
The extra 14766 selectors can never be validly used by the decompression
algorithm. So we can read them, but then discard them.
This is effectively what was done (by accident) before we added a
check for nSelectors to be at most BZ_MAX_SELECTORS to mitigate
CVE-2019-12900.
The extra selectors were written out after the array inside the
EState struct. But the struct has extra space allocated after the
selector arrays of 18060 bytes (which is larger than 14766).
All of which will be initialized later (so the overwrite of that
space with extra selector values would have been harmless).
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The bzip2 command line would report 'not a normal file' for files of
size larger than 2^32 - 1 bytes.
Patch bzip2.c to use _stati64 instead of _stat so that a successful
result is returned for large files.
Resolves https://github.com/philr/bzip2-windows/issues/3.
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Also update the version number in the Makefile comments.
And update any date ranges to include the current year.
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Changes the include path separator for Windows builds to use "/" instead
of "\". Windows has no problems with using a forward slash as a path
separator, but using a backslash causes problems when attempting to
cross compile for other platforms (for example, when trying to cross
compile for MinGW from Linux).
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.ref files should always be treated as binary files so that git does not
attempt to convert the line endings if core.autocrlf is set.
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Updates the .gitignore file to ignore many build artifacts
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Script to run to prepare a new release.
It will update the release number and tell you to update the
CHANGES file and to double check everything looks before doing
the release commit and tagging.
Afterwards you probably want to run release-update.sh to upload
the release and update the website at https://sourceware.org/bzip2/
There are embedded version strings and dates in a couple of places.
To keep the script simple remove some that aren't absolutely necessary.
README now just points to CHANGES.
README.COMPILATION.PROBLEMS only mentions the version once at the top.
bzip2.c only mentions the version once when doing --version.
manual.xml now doesn't have any embedded versions, just uses &bz-version;
everywhere.
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decompress.c (BZ2_decompress): Check nGroups against BZ_N_GROUPS.
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nSelectors is used in a loop from 0 to nSelectors to access selectorMtf
which is
UChar selectorMtf[BZ_MAX_SELECTORS];
so if nSelectors is bigger than BZ_MAX_SELECTORS it'll do an invalid memory
access
Fixes out of bounds access discovered while fuzzying karchive
This was reported as CVE-2019-12900
BZ2_decompress in decompress.c in bzip2 through 1.0.6 has an
out-of-bounds write when there are many selectors.
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These macros contain this pattern:
1 << ((Int32_value) & 31
This causes the undefined behavior sanitizers in clang and gcc to
complain because the shift, while ultimately stored to an unsigned
variable, is done as a signed value. Adding a cast to unsigned for
the int32 value resolves this issue.
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When passing -q to get quiet output --test would not display an error
message, but would also suppress the exit 2 code to indicate the file
was corrupt. Only suppress the error message with -q, not the exit value.
This patch comes from Debian.
"bunzip2 -qt returns 0 for corrupt archives"
https://bugs.debian.org/279025
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bzip2recover.c (main): Make sure to set outFile to NULL when done.
This was reported as CVE-2016-3189 and found in multiple distributions.
https://seclists.org/oss-sec/2016/q2/568
Some more analysis can be found in:
https://bugzilla.redhat.com/show_bug.cgi?id=1319648
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bzip2recover.c (main) copies argv[0] to a statically sized buffer
without checking whether argv[0] might be too big (> 2000 chars).
This patch comes from Fedora and was originally reported at
https://bugzilla.redhat.com/show_bug.cgi?id=226979
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Modern GCC warns:
bzip2.c: In function ‘testStream’:
bzip2.c:557:37: warning: variable ‘nread’ set but not used
[-Wunused-but-set-variable]
Int32 bzerr, bzerr_dummy, ret, nread, streamNo, i;
^~~~~
GCC is correct. In testStream we don't care about the number of bytes
read by BZ2_bzRead. So just remove the variable and the assignment.
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Script to run after a release has been tagged, signed and pushed
to git. Will do a fresh checkout, verify the git tag, do fresh
build/dist, sign the dist with gpg, create a backup copy in HOME,
upload the tar.gz and sig to sourceware, checkout bzip2-htdocs,
copy over the new changes, manual, etc. and git push that to update
https://sourceware.org/bzip2/
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