Commit Graph

70001 Commits

Author SHA1 Message Date
Junio C Hamano
0807e57807 Merge branch 'en/header-split-cache-h'
Header clean-up.

* en/header-split-cache-h: (24 commits)
  protocol.h: move definition of DEFAULT_GIT_PORT from cache.h
  mailmap, quote: move declarations of global vars to correct unit
  treewide: reduce includes of cache.h in other headers
  treewide: remove double forward declaration of read_in_full
  cache.h: remove unnecessary includes
  treewide: remove cache.h inclusion due to pager.h changes
  pager.h: move declarations for pager.c functions from cache.h
  treewide: remove cache.h inclusion due to editor.h changes
  editor: move editor-related functions and declarations into common file
  treewide: remove cache.h inclusion due to object.h changes
  object.h: move some inline functions and defines from cache.h
  treewide: remove cache.h inclusion due to object-file.h changes
  object-file.h: move declarations for object-file.c functions from cache.h
  treewide: remove cache.h inclusion due to git-zlib changes
  git-zlib: move declarations for git-zlib functions from cache.h
  treewide: remove cache.h inclusion due to object-name.h changes
  object-name.h: move declarations for object-name.c functions from cache.h
  treewide: remove unnecessary cache.h inclusion
  treewide: be explicit about dependence on mem-pool.h
  treewide: be explicit about dependence on oid-array.h
  ...
2023-04-25 13:56:20 -07:00
Junio C Hamano
9ce9dea4e1 Sync with Git 2.40.1 2023-04-24 22:31:32 -07:00
Junio C Hamano
7580f92ffa The twelfth batch
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2023-04-21 15:35:09 -07:00
Junio C Hamano
b64894c206 Merge branch 'ow/ref-filter-omit-empty'
"git branch --format=..." and "git format-patch --format=..."
learns "--omit-empty" to hide refs that whose formatting result
becomes an empty string from the output.

* ow/ref-filter-omit-empty:
  branch, for-each-ref, tag: add option to omit empty lines
2023-04-21 15:35:05 -07:00
Junio C Hamano
9e0d1aa495 Merge branch 'ah/format-patch-thread-doc'
Doc update.

* ah/format-patch-thread-doc:
  format-patch: correct documentation of --thread without an argument
2023-04-21 15:35:05 -07:00
Junio C Hamano
7ac228c994 Merge branch 'rn/sparse-describe'
"git describe --dirty" learns to work better with sparse-index.

* rn/sparse-describe:
  describe: enable sparse index for describe
2023-04-21 15:35:04 -07:00
Junio C Hamano
de73a20756 Merge branch 'rs/archive-from-subdirectory-fixes'
"git archive" run from a subdirectory mishandled attributes and
paths outside the current directory.

* rs/archive-from-subdirectory-fixes:
  archive: improve support for running in subdirectory
2023-04-21 15:35:04 -07:00
Junio C Hamano
09a7b61c1d Merge branch 'fc/doc-stop-using-manversion'
Doc build simplification.

* fc/doc-stop-using-manversion:
  doc: simplify man version
2023-04-21 15:35:04 -07:00
Junio C Hamano
9c6990cca2 The eleventh batch
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2023-04-20 14:33:36 -07:00
Junio C Hamano
a4a4db8cf7 Merge branch 'gc/better-error-when-local-clone-fails-with-symlink'
"git clone --local" stops copying from an original repository that
has symbolic links inside its $GIT_DIR; an error message when that
happens has been updated.

* gc/better-error-when-local-clone-fails-with-symlink:
  clone: error specifically with --local and symlinked objects
2023-04-20 14:33:36 -07:00
Junio C Hamano
98c496fcd0 Merge branch 'ar/t2024-checkout-output-fix'
Test fix.

* ar/t2024-checkout-output-fix:
  t2024: fix loose/strict local base branch DWIM test
2023-04-20 14:33:36 -07:00
Junio C Hamano
08bd076ce4 Merge branch 'rs/get-tar-commit-id-use-defined-const'
Code clean-up to replace a hardcoded constant with a CPP macro.

* rs/get-tar-commit-id-use-defined-const:
  get-tar-commit-id: use TYPEFLAG_GLOBAL_HEADER instead of magic value
2023-04-20 14:33:36 -07:00
Junio C Hamano
fa9172c70a Merge branch 'rs/remove-approxidate-relative'
The approxidate() API has been simplified by losing an extra
function that did the same thing as another one.

* rs/remove-approxidate-relative:
  date: remove approxidate_relative()
2023-04-20 14:33:35 -07:00
Junio C Hamano
cbfe844aa1 Merge branch 'rs/userdiff-multibyte-regex'
The userdiff regexp patterns for various filetypes that are built
into the system have been updated to avoid triggering regexp errors
from UTF-8 aware regex engines.

* rs/userdiff-multibyte-regex:
  userdiff: support regexec(3) with multi-byte support
2023-04-20 14:33:35 -07:00
Elijah Newren
331b094eec protocol.h: move definition of DEFAULT_GIT_PORT from cache.h
Michael J Gruber noticed that connection via the git:// protocol no
longer worked after a recent header clean-up.  This was caused by
funny interaction of few gotchas.  First, a necessary definition

	#define DEFAULT_GIT_PORT 9418

was made invisible to a place where

	const char *port = STR(DEFAULT_GIT_PORT);

was expecting to turn the integer into "9418" with a clever STR()
macro, and ended up stringifying it to

	const char *port = "DEFAULT_GIT_PORT";

without giving any chance to compilers to notice such a mistake.

Signed-off-by: Elijah Newren <newren@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2023-04-18 14:01:04 -07:00
Junio C Hamano
667fcf4e15 The tenth batch
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2023-04-17 18:05:13 -07:00
Junio C Hamano
3c957e6d39 Merge branch 'pw/rebase-cleanup-merge-strategy-option-handling'
Clean-up of the code path that deals with merge strategy option
handling in "git rebase".

* pw/rebase-cleanup-merge-strategy-option-handling:
  rebase: remove a couple of redundant strategy tests
  rebase -m: fix serialization of strategy options
  rebase -m: cleanup --strategy-option handling
  sequencer: use struct strvec to store merge strategy options
  rebase: stop reading and writing unnecessary strategy state
2023-04-17 18:05:13 -07:00
Junio C Hamano
66bf8f1943 Merge branch 'cm/branch-delete-error-message-update'
"git branch -d origin/master" would say "no such branch", but it is
likely a missed "-r" if refs/remotes/origin/master exists.  The
command has been taught to give such a hint in its error message.

* cm/branch-delete-error-message-update:
  branch: improve error log on branch not found by checking remotes refs
2023-04-17 18:05:12 -07:00
Junio C Hamano
c232ebacb2 Merge branch 'fc/remove-header-workarounds-for-asciidoc'
Doc toolchain update to remove old workaround for AsciiDoc.

* fc/remove-header-workarounds-for-asciidoc:
  doc: asciidoc: remove custom header macro
2023-04-17 18:05:12 -07:00
Junio C Hamano
953823fcbf Merge branch 'la/mfc-markup-fix'
Documentation mark-up fix.

* la/mfc-markup-fix:
  MyFirstContribution: render literal *
2023-04-17 18:05:12 -07:00
Junio C Hamano
9d8370d445 Merge branch 'tk/mergetool-gui-default-config'
"git mergetool" and "git difftool" learns a new configuration
guiDefault to optionally favor configured guitool over non-gui-tool
automatically when $DISPLAY is set.

* tk/mergetool-gui-default-config:
  mergetool: new config guiDefault supports auto-toggling gui by DISPLAY
2023-04-17 18:05:11 -07:00
Junio C Hamano
d47ee0a565 Merge branch 'sl/sparse-write-tree'
"git write-tree" learns to work better with sparse-index.

* sl/sparse-write-tree:
  write-tree: integrate with sparse index
2023-04-17 18:05:11 -07:00
Johannes Schindelin
0d1bd1dfb3 Git 2.40.1
Signed-off-by: Taylor Blau <me@ttaylorr.com>
Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
2023-04-17 21:16:10 +02:00
Johannes Schindelin
3d3c11852c Sync with 2.39.3
* maint-2.39: (34 commits)
  Git 2.39.3
  Git 2.38.5
  Git 2.37.7
  Git 2.36.6
  Git 2.35.8
  Makefile: force -O0 when compiling with SANITIZE=leak
  Git 2.34.8
  Git 2.33.8
  Git 2.32.7
  Git 2.31.8
  tests: avoid using `test_i18ncmp`
  Git 2.30.9
  gettext: avoid using gettext if the locale dir is not present
  apply --reject: overwrite existing `.rej` symlink if it exists
  http.c: clear the 'finished' member once we are done with it
  clone.c: avoid "exceeds maximum object size" error with GCC v12.x
  t5604: GETTEXT_POISON fix, conclusion
  t5604: GETTEXT_POISON fix, part 1
  t5619: GETTEXT_POISON fix
  range-diff: use ssize_t for parsed "len" in read_patches()
  ...
2023-04-17 21:16:10 +02:00
Johannes Schindelin
9bbde12fee Git 2.39.3
Signed-off-by: Taylor Blau <me@ttaylorr.com>
Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
2023-04-17 21:16:08 +02:00
Johannes Schindelin
15628975cf Sync with 2.38.5
* maint-2.38: (32 commits)
  Git 2.38.5
  Git 2.37.7
  Git 2.36.6
  Git 2.35.8
  Git 2.34.8
  Git 2.33.8
  Git 2.32.7
  Git 2.31.8
  tests: avoid using `test_i18ncmp`
  Git 2.30.9
  gettext: avoid using gettext if the locale dir is not present
  apply --reject: overwrite existing `.rej` symlink if it exists
  http.c: clear the 'finished' member once we are done with it
  clone.c: avoid "exceeds maximum object size" error with GCC v12.x
  range-diff: use ssize_t for parsed "len" in read_patches()
  range-diff: handle unterminated lines in read_patches()
  range-diff: drop useless "offset" variable from read_patches()
  t5604: GETTEXT_POISON fix, conclusion
  t5604: GETTEXT_POISON fix, part 1
  t5619: GETTEXT_POISON fix
  t0003: GETTEXT_POISON fix, conclusion
  ...
2023-04-17 21:16:08 +02:00
Johannes Schindelin
ec58344906 Git 2.38.5
Signed-off-by: Taylor Blau <me@ttaylorr.com>
Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
2023-04-17 21:16:07 +02:00
Johannes Schindelin
c96ecfe6a5 Sync with 2.37.7
* maint-2.37: (31 commits)
  Git 2.37.7
  Git 2.36.6
  Git 2.35.8
  Git 2.34.8
  Git 2.33.8
  Git 2.32.7
  Git 2.31.8
  tests: avoid using `test_i18ncmp`
  Git 2.30.9
  gettext: avoid using gettext if the locale dir is not present
  apply --reject: overwrite existing `.rej` symlink if it exists
  http.c: clear the 'finished' member once we are done with it
  clone.c: avoid "exceeds maximum object size" error with GCC v12.x
  range-diff: use ssize_t for parsed "len" in read_patches()
  range-diff: handle unterminated lines in read_patches()
  range-diff: drop useless "offset" variable from read_patches()
  t5604: GETTEXT_POISON fix, conclusion
  t5604: GETTEXT_POISON fix, part 1
  t5619: GETTEXT_POISON fix
  t0003: GETTEXT_POISON fix, conclusion
  t0003: GETTEXT_POISON fix, part 1
  ...
2023-04-17 21:16:06 +02:00
Johannes Schindelin
d27ae36bbb Git 2.37.7
Signed-off-by: Taylor Blau <me@ttaylorr.com>
Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
2023-04-17 21:16:05 +02:00
Johannes Schindelin
1df551ce5c Sync with 2.36.6
* maint-2.36: (30 commits)
  Git 2.36.6
  Git 2.35.8
  Git 2.34.8
  Git 2.33.8
  Git 2.32.7
  Git 2.31.8
  tests: avoid using `test_i18ncmp`
  Git 2.30.9
  gettext: avoid using gettext if the locale dir is not present
  apply --reject: overwrite existing `.rej` symlink if it exists
  http.c: clear the 'finished' member once we are done with it
  clone.c: avoid "exceeds maximum object size" error with GCC v12.x
  range-diff: use ssize_t for parsed "len" in read_patches()
  range-diff: handle unterminated lines in read_patches()
  range-diff: drop useless "offset" variable from read_patches()
  t5604: GETTEXT_POISON fix, conclusion
  t5604: GETTEXT_POISON fix, part 1
  t5619: GETTEXT_POISON fix
  t0003: GETTEXT_POISON fix, conclusion
  t0003: GETTEXT_POISON fix, part 1
  t0033: GETTEXT_POISON fix
  ...
2023-04-17 21:16:04 +02:00
Johannes Schindelin
ecaa3db171 Git 2.36.6
Signed-off-by: Taylor Blau <me@ttaylorr.com>
Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
2023-04-17 21:16:03 +02:00
Johannes Schindelin
62298def14 Sync with 2.35.8
* maint-2.35: (29 commits)
  Git 2.35.8
  Git 2.34.8
  Git 2.33.8
  Git 2.32.7
  Git 2.31.8
  tests: avoid using `test_i18ncmp`
  Git 2.30.9
  gettext: avoid using gettext if the locale dir is not present
  apply --reject: overwrite existing `.rej` symlink if it exists
  http.c: clear the 'finished' member once we are done with it
  clone.c: avoid "exceeds maximum object size" error with GCC v12.x
  range-diff: use ssize_t for parsed "len" in read_patches()
  range-diff: handle unterminated lines in read_patches()
  range-diff: drop useless "offset" variable from read_patches()
  t5604: GETTEXT_POISON fix, conclusion
  t5604: GETTEXT_POISON fix, part 1
  t5619: GETTEXT_POISON fix
  t0003: GETTEXT_POISON fix, conclusion
  t0003: GETTEXT_POISON fix, part 1
  t0033: GETTEXT_POISON fix
  http: support CURLOPT_PROTOCOLS_STR
  ...
2023-04-17 21:16:02 +02:00
Johannes Schindelin
7380a72f6b Git 2.35.8
Signed-off-by: Taylor Blau <me@ttaylorr.com>
Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
2023-04-17 21:16:00 +02:00
Johannes Schindelin
8cd052ea53 Sync with 2.34.8
* maint-2.34: (28 commits)
  Git 2.34.8
  Git 2.33.8
  Git 2.32.7
  Git 2.31.8
  tests: avoid using `test_i18ncmp`
  Git 2.30.9
  gettext: avoid using gettext if the locale dir is not present
  apply --reject: overwrite existing `.rej` symlink if it exists
  http.c: clear the 'finished' member once we are done with it
  clone.c: avoid "exceeds maximum object size" error with GCC v12.x
  range-diff: use ssize_t for parsed "len" in read_patches()
  range-diff: handle unterminated lines in read_patches()
  range-diff: drop useless "offset" variable from read_patches()
  t5604: GETTEXT_POISON fix, conclusion
  t5604: GETTEXT_POISON fix, part 1
  t5619: GETTEXT_POISON fix
  t0003: GETTEXT_POISON fix, conclusion
  t0003: GETTEXT_POISON fix, part 1
  t0033: GETTEXT_POISON fix
  http: support CURLOPT_PROTOCOLS_STR
  http: prefer CURLOPT_SEEKFUNCTION to CURLOPT_IOCTLFUNCTION
  ...
2023-04-17 21:15:59 +02:00
Johannes Schindelin
abcb63fb70 Git 2.34.8
Signed-off-by: Taylor Blau <me@ttaylorr.com>
Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
2023-04-17 21:15:57 +02:00
Johannes Schindelin
d6e9f67a8e Sync with 2.33.8
* maint-2.33: (27 commits)
  Git 2.33.8
  Git 2.32.7
  Git 2.31.8
  tests: avoid using `test_i18ncmp`
  Git 2.30.9
  gettext: avoid using gettext if the locale dir is not present
  apply --reject: overwrite existing `.rej` symlink if it exists
  http.c: clear the 'finished' member once we are done with it
  clone.c: avoid "exceeds maximum object size" error with GCC v12.x
  range-diff: use ssize_t for parsed "len" in read_patches()
  range-diff: handle unterminated lines in read_patches()
  range-diff: drop useless "offset" variable from read_patches()
  t5604: GETTEXT_POISON fix, conclusion
  t5604: GETTEXT_POISON fix, part 1
  t5619: GETTEXT_POISON fix
  t0003: GETTEXT_POISON fix, conclusion
  t0003: GETTEXT_POISON fix, part 1
  t0033: GETTEXT_POISON fix
  http: support CURLOPT_PROTOCOLS_STR
  http: prefer CURLOPT_SEEKFUNCTION to CURLOPT_IOCTLFUNCTION
  http-push: prefer CURLOPT_UPLOAD to CURLOPT_PUT
  ...
2023-04-17 21:15:56 +02:00
Johannes Schindelin
3a19048ce4 Git 2.33.8
Signed-off-by: Taylor Blau <me@ttaylorr.com>
Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
2023-04-17 21:15:54 +02:00
Johannes Schindelin
bcd874d50f Sync with 2.32.7
* maint-2.32: (26 commits)
  Git 2.32.7
  Git 2.31.8
  tests: avoid using `test_i18ncmp`
  Git 2.30.9
  gettext: avoid using gettext if the locale dir is not present
  apply --reject: overwrite existing `.rej` symlink if it exists
  http.c: clear the 'finished' member once we are done with it
  clone.c: avoid "exceeds maximum object size" error with GCC v12.x
  range-diff: use ssize_t for parsed "len" in read_patches()
  range-diff: handle unterminated lines in read_patches()
  range-diff: drop useless "offset" variable from read_patches()
  t5604: GETTEXT_POISON fix, conclusion
  t5604: GETTEXT_POISON fix, part 1
  t5619: GETTEXT_POISON fix
  t0003: GETTEXT_POISON fix, conclusion
  t0003: GETTEXT_POISON fix, part 1
  t0033: GETTEXT_POISON fix
  http: support CURLOPT_PROTOCOLS_STR
  http: prefer CURLOPT_SEEKFUNCTION to CURLOPT_IOCTLFUNCTION
  http-push: prefer CURLOPT_UPLOAD to CURLOPT_PUT
  ci: install python on ubuntu
  ...
2023-04-17 21:15:52 +02:00
Johannes Schindelin
b8787a98db Git 2.32.7
Signed-off-by: Taylor Blau <me@ttaylorr.com>
Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
2023-04-17 21:15:51 +02:00
Johannes Schindelin
31f7fe5e34 Sync with 2.31.8
* maint-2.31: (25 commits)
  Git 2.31.8
  tests: avoid using `test_i18ncmp`
  Git 2.30.9
  gettext: avoid using gettext if the locale dir is not present
  apply --reject: overwrite existing `.rej` symlink if it exists
  http.c: clear the 'finished' member once we are done with it
  clone.c: avoid "exceeds maximum object size" error with GCC v12.x
  range-diff: use ssize_t for parsed "len" in read_patches()
  range-diff: handle unterminated lines in read_patches()
  range-diff: drop useless "offset" variable from read_patches()
  t5604: GETTEXT_POISON fix, conclusion
  t5604: GETTEXT_POISON fix, part 1
  t5619: GETTEXT_POISON fix
  t0003: GETTEXT_POISON fix, conclusion
  t0003: GETTEXT_POISON fix, part 1
  t0033: GETTEXT_POISON fix
  http: support CURLOPT_PROTOCOLS_STR
  http: prefer CURLOPT_SEEKFUNCTION to CURLOPT_IOCTLFUNCTION
  http-push: prefer CURLOPT_UPLOAD to CURLOPT_PUT
  ci: install python on ubuntu
  ci: use the same version of p4 on both Linux and macOS
  ...
2023-04-17 21:15:49 +02:00
Johannes Schindelin
ea56f91275 Git 2.31.8
Signed-off-by: Taylor Blau <me@ttaylorr.com>
Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
2023-04-17 21:15:47 +02:00
Johannes Schindelin
92957d8427 tests: avoid using test_i18ncmp
Since `test_i18ncmp` was deprecated in v2.31.*, the instances added in
v2.30.9 needed to be converted to `test_cmp` calls.

Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
2023-04-17 21:15:45 +02:00
Johannes Schindelin
b524e896b6 Sync with 2.30.9
* maint-2.30: (23 commits)
  Git 2.30.9
  gettext: avoid using gettext if the locale dir is not present
  apply --reject: overwrite existing `.rej` symlink if it exists
  http.c: clear the 'finished' member once we are done with it
  clone.c: avoid "exceeds maximum object size" error with GCC v12.x
  range-diff: use ssize_t for parsed "len" in read_patches()
  range-diff: handle unterminated lines in read_patches()
  range-diff: drop useless "offset" variable from read_patches()
  t5604: GETTEXT_POISON fix, conclusion
  t5604: GETTEXT_POISON fix, part 1
  t5619: GETTEXT_POISON fix
  t0003: GETTEXT_POISON fix, conclusion
  t0003: GETTEXT_POISON fix, part 1
  t0033: GETTEXT_POISON fix
  http: support CURLOPT_PROTOCOLS_STR
  http: prefer CURLOPT_SEEKFUNCTION to CURLOPT_IOCTLFUNCTION
  http-push: prefer CURLOPT_UPLOAD to CURLOPT_PUT
  ci: install python on ubuntu
  ci: use the same version of p4 on both Linux and macOS
  ci: remove the pipe after "p4 -V" to catch errors
  github-actions: run gcc-8 on ubuntu-20.04 image
  ...
2023-04-17 21:15:44 +02:00
Taylor Blau
668f2d5361 Git 2.30.9
Signed-off-by: Taylor Blau <me@ttaylorr.com>
Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
2023-04-17 21:15:43 +02:00
Taylor Blau
528290f8c6 Merge branch 'tb/config-copy-or-rename-in-file-injection'
Avoids issues with renaming or deleting sections with long lines, where
configuration values may be interpreted as sections, leading to
configuration injection. Addresses CVE-2023-29007.

* tb/config-copy-or-rename-in-file-injection:
  config.c: disallow overly-long lines in `copy_or_rename_section_in_file()`
  config.c: avoid integer truncation in `copy_or_rename_section_in_file()`
  config: avoid fixed-sized buffer when renaming/deleting a section
  t1300: demonstrate failure when renaming sections with long lines

Signed-off-by: Taylor Blau <me@ttaylorr.com>
2023-04-17 21:15:42 +02:00
Johannes Schindelin
4fe5d0b10a Merge branch 'avoid-using-uninitialized-gettext'
Avoids the overhead of calling `gettext` when initialization of the
translated messages was skipped. Addresses CVE-2023-25815.

* avoid-using-uninitialized-gettext: (1 commit)
  gettext: avoid using gettext if the locale dir is not present
2023-04-17 21:15:42 +02:00
Junio C Hamano
18e2b1cfc8 Merge branch 'js/apply-overwrite-rej-symlink-if-exists' into maint-2.30
Address CVE-2023-25652 by deleting any existing `.rej` symbolic links
instead of following them.

* js/apply-overwrite-rej-symlink-if-exists:
  apply --reject: overwrite existing `.rej` symlink if it exists

Signed-off-by: Johannes Schindelin <Johannes.Schindelin@gmx.de>
2023-04-17 21:15:41 +02:00
Taylor Blau
3bb3d6bac5 config.c: disallow overly-long lines in copy_or_rename_section_in_file()
As a defense-in-depth measure to guard against any potentially-unknown
buffer overflows in `copy_or_rename_section_in_file()`, refuse to work
with overly-long lines in a gitconfig.

Signed-off-by: Taylor Blau <me@ttaylorr.com>
Signed-off-by: Johannes Schindelin <Johannes.Schindelin@gmx.de>
2023-04-17 21:15:40 +02:00
Taylor Blau
e91cfe6085 config.c: avoid integer truncation in copy_or_rename_section_in_file()
There are a couple of spots within `copy_or_rename_section_in_file()`
that incorrectly use an `int` to track an offset within a string, which
may truncate or wrap around to a negative value.

Historically it was impossible to have a line longer than 1024 bytes
anyway, since we used fgets() with a fixed-size buffer of exactly that
length. But the recent change to use a strbuf permits us to read lines
of arbitrary length, so it's possible for a malicious input to cause us
to overflow past INT_MAX and do an out-of-bounds array read.

Practically speaking, however, this should never happen, since it
requires 2GB section names or values, which are unrealistic in
non-malicious circumstances.

Co-authored-by: Jeff King <peff@peff.net>
Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Taylor Blau <me@ttaylorr.com>
2023-04-17 21:15:40 +02:00
Taylor Blau
a5bb10fd5e config: avoid fixed-sized buffer when renaming/deleting a section
When renaming (or deleting) a section of configuration, Git uses the
function `git_config_copy_or_rename_section_in_file()` to rewrite the
configuration file after applying the rename or deletion to the given
section.

To do this, Git repeatedly calls `fgets()` to read the existing
configuration data into a fixed size buffer.

When the configuration value under `old_name` exceeds the size of the
buffer, we will call `fgets()` an additional time even if there is no
newline in the configuration file, since our read length is capped at
`sizeof(buf)`.

If the first character of the buffer (after zero or more characters
satisfying `isspace()`) is a '[', Git will incorrectly treat it as
beginning a new section when the original section is being removed. In
other words, a configuration value satisfying this criteria can
incorrectly be considered as a new secftion instead of a variable in the
original section.

Avoid this issue by using a variable-width buffer in the form of a
strbuf rather than a fixed-with region on the stack. A couple of small
points worth noting:

  - Using a strbuf will cause us to allocate arbitrary sizes to match
    the length of each line.  In practice, we don't expect any
    reasonable configuration files to have lines that long, and a
    bandaid will be introduced in a later patch to ensure that this is
    the case.

  - We are using strbuf_getwholeline() here instead of strbuf_getline()
    in order to match `fgets()`'s behavior of leaving the trailing LF
    character on the buffer (as well as a trailing NUL).

    This could be changed later, but using strbuf_getwholeline() changes
    the least about this function's implementation, so it is picked as
    the safest path.

  - It is temping to want to replace the loop to skip over characters
    matching isspace() at the beginning of the buffer with a convenience
    function like `strbuf_ltrim()`. But this is the wrong approach for a
    couple of reasons:

    First, it involves a potentially large and expensive `memmove()`
    which we would like to avoid. Second, and more importantly, we also
    *do* want to preserve those spaces to avoid changing the output of
    other sections.

In all, this patch is a minimal replacement of the fixed-width buffer in
`git_config_copy_or_rename_section_in_file()` to instead use a `struct
strbuf`.

Reported-by: André Baptista <andre@ethiack.com>
Reported-by: Vítor Pinho <vitor@ethiack.com>
Helped-by: Patrick Steinhardt <ps@pks.im>
Co-authored-by: Johannes Schindelin <Johannes.Schindelin@gmx.de>
Signed-off-by: Johannes Schindelin <Johannes.Schindelin@gmx.de>
Signed-off-by: Taylor Blau <me@ttaylorr.com>
2023-04-17 21:15:40 +02:00