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59 commits

Author SHA1 Message Date
Junio C Hamano
f0b567898b Merge branch 'ab/mailmap-leakfix'
Leakfix.

* ab/mailmap-leakfix:
  mailmap.c: fix a memory leak in free_mailap_{info,entry}()
2021-09-10 11:46:28 -07:00
Ævar Arnfjörð Bjarmason
ccdd5d1eb1 mailmap.c: fix a memory leak in free_mailap_{info,entry}()
In the free_mailmap_entry() code added in 0925ce4d49 (Add map_user()
and clear_mailmap() to mailmap, 2009-02-08) the intent was clearly to
clear the "me" structure, but while we freed parts of the
mailmap_entry structure, we didn't free the structure itself. The same
goes for the "mailmap_info" structure.

This brings the number of SANITIZE=leak failures in t4203-mailmap.sh
down from 50 to 49. Not really progress as far as the number of
failures is concerned, but as far as I can tell this fixes all leaks
in mailmap.c itself. There's still users of it such as builtin/log.c
that call read_mailmap() without a clear_mailmap(), but that's on
them.

Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2021-08-31 12:38:09 -07:00
Ævar Arnfjörð Bjarmason
48ca53cac4 *.c static functions: add missing __attribute__((format))
Add missing __attribute__((format)) function attributes to various
"static" functions that take printf arguments.

Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2021-07-13 15:20:20 -07:00
Junio C Hamano
204333b015 Merge branch 'jk/open-dotgitx-with-nofollow'
It does not make sense to make ".gitattributes", ".gitignore" and
".mailmap" symlinks, as they are supposed to be usable from the
object store (think: bare repositories where HEAD:.mailmap etc. are
used).  When these files are symbolic links, we used to read the
contents of the files pointed by them by mistake, which has been
corrected.

* jk/open-dotgitx-with-nofollow:
  mailmap: do not respect symlinks for in-tree .mailmap
  exclude: do not respect symlinks for in-tree .gitignore
  attr: do not respect symlinks for in-tree .gitattributes
  exclude: add flags parameter to add_patterns()
  attr: convert "macro_ok" into a flags field
  add open_nofollow() helper
2021-03-22 14:00:22 -07:00
René Scharfe
ca56dadb4b use CALLOC_ARRAY
Add and apply a semantic patch for converting code that open-codes
CALLOC_ARRAY to use it instead.  It shortens the code and infers the
element size automatically.

Signed-off-by: René Scharfe <l.s.r@web.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2021-03-13 16:00:09 -08:00
Jeff King
adcd9f5472 mailmap: do not respect symlinks for in-tree .mailmap
As with .gitattributes and .gitignore, we would like to make sure that
.mailmap files are handled consistently whether read from the a blob (as
is the default behavior in a bare repo) or from the filesystem.
Likewise, we would like to avoid reading out-of-tree files pointed to by
a symlink, which could have security implications in certain setups.

We can cover both by using open_nofollow() when opening the in-tree
files. We'll continue to follow links for mailmap.file, as well as when
reading .mailmap from the current directory when outside of a repository
entirely.

Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2021-02-16 09:41:33 -08:00
Jeff King
a38cb9878a mailmap: only look for .mailmap in work tree
When trying to find a .mailmap file, we will always look for it in the
current directory. This makes sense in a repository with a working tree,
since we'd always go to the toplevel directory at startup. But for a
bare repository, it can be confusing. With an option like --git-dir (or
$GIT_DIR in the environment), we don't chdir at all, and we'd read
.mailmap from whatever directory you happened to be in before starting
Git.

(Note that --git-dir without specifying a working tree historically
means "the current directory is the root of the working tree", but most
bare repositories will have core.bare set these days, meaning they will
realize there is no working tree at all).

The documentation for gitmailmap(5) says:

  If the file `.mailmap` exists at the toplevel of the repository[...]

which likewise reinforces the notion that we are looking in the working
tree.

This patch prevents us from looking for such a file when we're in a bare
repository. This does break something that used to work:

  cd bare.git
  git cat-file blob HEAD:.mailmap >.mailmap
  git shortlog

But that was never advertised in the documentation. And these days we
have mailmap.blob (which defaults to HEAD:.mailmap) to do the same thing
in a much cleaner way.

However, there's one more interesting case: we might not have a
repository at all! The git-shortlog command can be run with git-log
output fed on its stdin, and it will apply the mailmap. In that case, it
probably does make sense to read .mailmap from the current directory.
This patch will continue to do so.

That leads to one even weirder case: if you run git-shortlog to process
stdin, the input _could_ be from a different repository entirely. Should
we respect the in-tree .mailmap then? Probably yes. Whatever the source
of the input, if shortlog is running in a repository, the documentation
claims that we'd read the .mailmap from its top-level (and of course
it's reasonably likely that it _is_ from the same repo, and the user
just preferred to run git-log and git-shortlog separately for whatever
reason).

The included test covers these cases, and we now document the "no repo"
case explicitly.

We also add a test that confirms we find a top-level ".mailmap" even
when we start in a subdirectory of the working tree. This worked both
before and after this commit, but we never tested it explicitly (it
works because we always chdir to the top-level of the working tree if
there is one).

Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2021-02-10 13:34:51 -08:00
Ævar Arnfjörð Bjarmason
4e168333a8 shortlog: remove unused(?) "repo-abbrev" feature
Remove support for the magical "repo-abbrev" comment in .mailmap
files. This was added to .mailmap parsing in [1], as a generalized
feature of the git-shortlog Perl script added earlier in [2].

There was no documentation or tests for this feature, and I don't
think it's used in practice anymore.

What it did was to allow you to specify a single string to be
search-replaced with "/.../" in the .mailmap file. E.g. for
linux.git's current .mailmap:

    git archive --remote=git@gitlab.com:linux-kernel/linux.git \
        HEAD -- .mailmap | grep -a repo-abbrev
    # repo-abbrev: /pub/scm/linux/kernel/git/

Then when running e.g.:

    git shortlog --merges --author=Linus -1 v5.10-rc7..v5.10 | grep Merge

We'd emit (the [...] is mine):

      Merge tag [...]git://git.kernel.org/.../tip/tip

But will now emit:

      Merge tag [...]git.kernel.org/pub/scm/linux/kernel/git/tip/tip

I think at this point this is just a historical artifact we can get
rid of. It was initially meant for Linus's own use when we integrated
the Perl script[2], but since then it seems he's stopped using it.

Digging through Linus's release announcements on the LKML[3] the last
release I can find that made use of this output is Linux 2.6.25-rc6
back in March 2008[4]. Later on Linus started using --no-merges[5],
and nowadays seems to prefer some custom not-quite-shortlog format of
merges from lieutenants[6].

You will still see it on linux.git if you run "git shortlog" manually
yourself with --merges, with this removed you can still get the same
output with:

    git log --pretty=fuller v5.10-rc7..v5.10 |
    sed 's!/pub/scm/linux/kernel/git/!/.../!g' |
    git shortlog

Arguably we should do the same for the search-replacing of "[PATCH]"
at the beginning with "". That seems to be another relic of a bygone
era when linux.git patches would have their E-Mail subject lines
applied as-is by "git am" or whatever. But we documented that feature
in "git-shortlog(1)", and it seems more widely applicable than
something purely kernel-specific.

1. 7595e2ee6e (git-shortlog: make common repository prefix
   configurable with .mailmap, 2006-11-25)
2. fa375c7f1b (Add git-shortlog perl script, 2005-06-04)
3. https://lore.kernel.org/lkml/
4. https://lore.kernel.org/lkml/alpine.LFD.1.00.0803161651350.3020@woody.linux-foundation.org/
5. https://lore.kernel.org/lkml/BANLkTinrbh7Xi27an3uY7pDWrNKhJRYmEA@mail.gmail.com/
6. https://lore.kernel.org/lkml/CAHk-=wg1+kf1AVzXA-RQX0zjM6t9J2Kay9xyuNqcFHWV-y5ZYw@mail.gmail.com/

Acked-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2021-01-12 14:04:42 -08:00
Stefan Beller
cbd53a2193 object-store: move object access functions to object-store.h
This should make these functions easier to find and cache.h less
overwhelming to read.

In particular, this moves:
- read_object_file
- oid_object_info
- write_object_file

As a result, most of the codebase needs to #include object-store.h.
In this patch the #include is only added to files that would fail to
compile otherwise.  It would be better to #include wherever
identifiers from the header are used.  That can happen later
when we have better tooling for it.

Signed-off-by: Stefan Beller <sbeller@google.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2018-05-16 11:42:03 +09:00
brian m. carlson
b4f5aca40e sha1_file: convert read_sha1_file to struct object_id
Convert read_sha1_file to take a pointer to struct object_id and rename
it read_object_file.  Do the same for read_sha1_file_extended.

Convert one use in grep.c to use the new function without any other code
change, since the pointer being passed is a void pointer that is already
initialized with a pointer to struct object_id.  Update the declaration
and definitions of the modified functions, and apply the following
semantic patch to convert the remaining callers:

@@
expression E1, E2, E3;
@@
- read_sha1_file(E1.hash, E2, E3)
+ read_object_file(&E1, E2, E3)

@@
expression E1, E2, E3;
@@
- read_sha1_file(E1->hash, E2, E3)
+ read_object_file(E1, E2, E3)

@@
expression E1, E2, E3, E4;
@@
- read_sha1_file_extended(E1.hash, E2, E3, E4)
+ read_object_file_extended(&E1, E2, E3, E4)

@@
expression E1, E2, E3, E4;
@@
- read_sha1_file_extended(E1->hash, E2, E3, E4)
+ read_object_file_extended(E1, E2, E3, E4)

Signed-off-by: brian m. carlson <sandals@crustytoothpaste.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2018-03-14 09:23:50 -07:00
brian m. carlson
15be4a5d38 Convert remaining callers of get_sha1 to get_oid.
Signed-off-by: brian m. carlson <sandals@crustytoothpaste.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2017-07-17 13:54:51 -07:00
Junio C Hamano
13092a916d cocci: refactor common patterns to use xstrdup_or_null()
d64ea0f83b ("git-compat-util: add xstrdup_or_null helper",
2015-01-12) added a handy wrapper that allows us to get a duplicate
of a string or NULL if the original is NULL, but a handful of
codepath predate its introduction or just weren't aware of it.

Signed-off-by: Junio C Hamano <gitster@pobox.com>
2016-10-12 11:22:10 -07:00
Junio C Hamano
40cfc95856 Merge branch 'nd/error-errno'
The code for warning_errno/die_errno has been refactored and a new
error_errno() reporting helper is introduced.

* nd/error-errno: (41 commits)
  wrapper.c: use warning_errno()
  vcs-svn: use error_errno()
  upload-pack.c: use error_errno()
  unpack-trees.c: use error_errno()
  transport-helper.c: use error_errno()
  sha1_file.c: use {error,die,warning}_errno()
  server-info.c: use error_errno()
  sequencer.c: use error_errno()
  run-command.c: use error_errno()
  rerere.c: use error_errno() and warning_errno()
  reachable.c: use error_errno()
  mailmap.c: use error_errno()
  ident.c: use warning_errno()
  http.c: use error_errno() and warning_errno()
  grep.c: use error_errno()
  gpg-interface.c: use error_errno()
  fast-import.c: use error_errno()
  entry.c: use error_errno()
  editor.c: use error_errno()
  diff-no-index.c: use error_errno()
  ...
2016-05-17 14:38:28 -07:00
Nguyễn Thái Ngọc Duy
60901e4c22 mailmap.c: use error_errno()
Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2016-05-09 12:29:08 -07:00
Jeff King
5735dc5a0d mailmap: do not resolve blobs in a non-repository
The mailmap code may be triggered outside of a repository by
git-shortlog. There is no point in looking up a name like
"HEAD:.mailmap" there; without a repository, we have no
refs.

This is unlikely to matter much in practice for the current
code, as we would simply fail to find the ref. But as the
refs code learns about new backends, this is more important;
without a repository, we do not even know which backend to
look at.

Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2016-03-06 17:19:11 -08:00
Jeff King
c978610dc8 mailmap: replace strcpy with xstrdup
We want to make a copy of a string without any leading
whitespace. To do so, we allocate a buffer large enough to
hold the original, skip past the whitespace, then copy that.
It's much simpler to just allocate after we've skipped, in
which case we can just copy the remainder of the string,
leaving no question of whether "len" is large enough.

Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2015-09-25 10:18:18 -07:00
Stefan Beller
63226218ba mailmap: use higher level string list functions
No functional changes intended. This commit makes use of higher level
and better documented functions of the string list API, so the code is
more understandable.

Note that also the required computational amount should not change
in principal as we need to look up the item no matter if it is already
part of the list or not. Once looked up, insertion comes for free.

Signed-off-by: Stefan Beller <sbeller@google.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2014-12-04 15:10:21 -08:00
Jonathan Nieder
a301889980 Merge branch 'jc/strcasecmp-pure-inline'
* jc/strcasecmp-pure-inline:
  mailmap: work around implementations with pure inline strcasecmp
2013-09-24 23:28:13 -07:00
Junio C Hamano
de2f95ebed mailmap: work around implementations with pure inline strcasecmp
On some systems (e.g. MinGW 4.0), string.h has only inline
definition of strcasecmp and no non-inline implementation is
supplied anywhere, which is, eh, "unusual".  We cannot take an
address of such a function to store it in namemap.cmp.

Work it around by introducing our own level of indirection.

Signed-off-by: Junio C Hamano <gitster@pobox.com>
2013-09-12 12:05:48 -07:00
Junio C Hamano
e5229b6a61 Merge branch 'sb/mailmap-freeing-NULL-is-ok'
* sb/mailmap-freeing-NULL-is-ok:
  mailmap: remove redundant check for freeing memory
2013-09-11 15:00:43 -07:00
Junio C Hamano
af226bf01e Merge branch 'jk/mailmap-incomplete-line'
* jk/mailmap-incomplete-line:
  mailmap: handle mailmap blobs without trailing newlines
2013-09-09 14:50:41 -07:00
Jeff King
f972a1658a mailmap: handle mailmap blobs without trailing newlines
The read_mailmap_buf function reads each line of the mailmap
using strchrnul, like:

    const char *end = strchrnul(buf, '\n');
    unsigned long linelen = end - buf + 1;

But that's off-by-one when we actually hit the NUL byte; our
line does not have a terminator, and so is only "end - buf"
bytes long. As a result, when we subtract the linelen from
the total len, we end up with (unsigned long)-1 bytes left
in the buffer, and we start reading random junk from memory.

We could fix it with:

    unsigned long linelen = end - buf + !!*end;

but let's take a step back for a moment. It's questionable
in the first place for a function that takes a buffer and
length to be using strchrnul. But it works because we only
have one caller (and are only likely to ever have this one),
which is handing us data from read_sha1_file. Which means
that it's always NUL-terminated.

Instead of tightening the assumptions to make the
buffer/length pair work for a caller that doesn't actually
exist, let's let loosen the assumptions to what the real
caller has: a modifiable, NUL-terminated string.

This makes the code simpler and shorter (because we don't
have to correlate strchrnul with the length calculation),
correct (because the code with the off-by-one just goes
away), and more efficient (we can drop the extra allocation
we needed to create NUL-terminated strings for each line,
and just terminate in place).

Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2013-08-28 12:33:32 -07:00
Stefan Beller
c9ba31f592 mailmap: remove redundant check for freeing memory
The condition as it is written in that line has already been checked
in the beginning of the function, which was introduced in
8503ee4 (2007-05-01, Fix read_mailmap to handle a caller uninterested
in repo abbreviation)

Helped-by: Jeff King <peff@peff.net>
Helped-by: Thomas Rast <trast@inf.ethz.ch>
Signed-off-by: Stefan Beller <stefanbeller@googlemail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2013-08-20 10:10:37 -07:00
Junio C Hamano
bd23794552 mailmap: style fixes
Wrap overlong lines and format the multi-line comments to match our
coding style.

Signed-off-by: Junio C Hamano <gitster@pobox.com>
Signed-off-by: Eric Sunshine <sunshine@sunshineco.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2013-07-15 08:23:39 -07:00
Eric Sunshine
fbfba7ade0 mailmap: debug: avoid passing NULL to fprintf() '%s' conversion specification
POSIX does not state the behavior of '%s' conversion when passed a
NULL pointer. Some implementations interpolate literal "(null)";
others may crash.

Callers of debug_mm() often pass NULL as indication of either a
missing name or email address.  Instead, let's always supply a
proper string pointer, and make it a bit more descriptive: "(none)"

Signed-off-by: Eric Sunshine <sunshine@sunshineco.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2013-07-15 08:20:32 -07:00
Eric Sunshine
a8002a5f0e mailmap: debug: eliminate -Wformat field precision type warning
The compiler complains that '*' in fprintf() format "%.*s" should
have type int, but we pass size_t. Fix this.

Signed-off-by: Eric Sunshine <sunshine@sunshineco.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2013-07-15 08:20:11 -07:00
Eric Sunshine
0939a242fe mailmap: debug: fix malformed fprintf() format conversion specification
Resolve segmentation fault due to size_t variable being consumed by
'%s'.

Signed-off-by: Eric Sunshine <sunshine@sunshineco.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2013-07-15 08:19:56 -07:00
Eric Sunshine
c10be0c6ac mailmap: debug: fix out-of-order fprintf() arguments
Resolve segmentation fault due to arguments passed in wrong order.

Signed-off-by: Eric Sunshine <sunshine@sunshineco.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2013-07-15 08:18:04 -07:00
Junio C Hamano
97e751be79 mailmap: do not downcase mailmap entries
The email addresses in the records read from the .mailmap file are
downcased very early, and then used to match against e-mail
addresses in the input.  Because we do use case insensitive version
of string list to manage these entries, there is no need to do this,
and worse yet, downcasing the rewritten/canonical e-mail read from
the .mailmap file loses information.

Stop doing that, and also make the string list used to keep multiple
names for an mailmap entry case insensitive (the code that uses the
list, lookup_prefix(), expects a case insensitive match).

Signed-off-by: Junio C Hamano <gitster@pobox.com>
Signed-off-by: Eric Sunshine <sunshine@sunshineco.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2013-07-15 08:17:20 -07:00
Junio C Hamano
8c3811510e mailmap: do not lose single-letter names
In parse_name_and_email() function, there is this line:

	*name = (nstart < nend ? nstart : NULL);

When the function is given a buffer "A <A@example.org> <old@x.z>",
nstart scans from the beginning of the buffer, skipping whitespaces
(there isn't any, so nstart points at the buffer), while nend starts
from one byte before the first '<' and skips whitespaces backwards
and stops at the first non-whitespace (i.e. it hits "A" at the
beginning of the buffer).  nstart == nend in this case for a
single-letter name, and an off-by-one error makes it fail to pick up
the name, which makes the entry equivalent to

	<A@example.org> <old@x.z>

without the name.

Signed-off-by: Junio C Hamano <gitster@pobox.com>
Signed-off-by: Eric Sunshine <sunshine@sunshineco.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2013-07-15 08:16:00 -07:00
Junio C Hamano
577f63e781 Merge branch 'ap/log-mailmap'
Teach commands in the "log" family to optionally pay attention to
the mailmap.

* ap/log-mailmap:
  log --use-mailmap: optimize for cases without --author/--committer search
  log: add log.mailmap configuration option
  log: grep author/committer using mailmap
  test: add test for --use-mailmap option
  log: add --use-mailmap option
  pretty: use mailmap to display username and email
  mailmap: add mailmap structure to rev_info and pp
  mailmap: simplify map_user() interface
  mailmap: remove email copy and length limitation
  Use split_ident_line to parse author and committer
  string-list: allow case-insensitive string list
2013-01-20 17:06:53 -08:00
Antoine Pelisse
ea02ffa385 mailmap: simplify map_user() interface
Simplify map_user(), mostly to avoid copies of string buffers. It
also simplifies caller functions.

map_user() directly receive pointers and length from the commit buffer
as mail and name. If mapping of the user and mail can be done, the
pointer is updated to a new location. Lengths are also updated if
necessary.

The caller of map_user() can then copy the new email and name if
necessary.

Signed-off-by: Antoine Pelisse <apelisse@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2013-01-10 12:33:08 -08:00
Junio C Hamano
388c7f8a27 mailmap: remove email copy and length limitation
In map_user(), we have email pointer that points at the beginning of
an e-mail address, but the buffer is not terminated with a NUL after
the e-mail address.  It typically has ">" after the address, and it
could have even more if it comes from author/committer line in a
commit object.  Or it may not have ">" after it.

We used to copy the e-mail address proper into a temporary buffer
before asking the string-list API to find the e-mail address in the
mailmap, because string_list_lookup() function only takes a NUL
terminated full string.

Introduce a helper function lookup_prefix that takes the email
pointer and the length, and finds a matching entry in the string
list used for the mailmap, by doing the following:

 - First ask string_list_find_insert_index() where in its sorted
   list the e-mail address we have (including the possible trailing
   junk ">...") would be inserted.

 - It could find an exact match (e.g. we had a clean e-mail address
   without any trailing junk).  We can return the item in that case.

 - Or it could return the index of an item that sorts after the
   e-mail address we have.

 - If we did not find an exact match against a clean e-mail address,
   then the record we are looking for in the mailmap has to exist
   before the index returned by the function (i.e. "email>junk"
   always sorts later than "email").  Iterate, starting from that
   index, down the map->items[] array until we find the exact record
   we are looking for, or we see a record with a key that definitely
   sorts earlier than the e-mail we are looking for (i.e. when we
   are looking for "email" in "email>junk", a record in the mailmap
   that begins with "emaik" strictly sorts before "email", if such a
   key existed in the mailmap).

This, together with the earlier enhancement to support
case-insensitive sorting, allow us to remove an extra copy of email
buffer to downcase it.

A part of this is based on Antoine Pelisse's previous work.

Signed-off-by: Junio C Hamano <gitster@pobox.com>
2013-01-10 12:32:35 -08:00
Jeff King
8c473cecfd mailmap: default mailmap.blob in bare repositories
The motivation for mailmap.blob is to let users of bare
repositories use the mailmap feature, as they would not have
a checkout containing the .mailmap file. We can make it even
easier for them by just looking in HEAD:.mailmap by default.

We can't know for sure that this is where they would keep a
mailmap, of course, but it is the best guess (and it matches
the non-bare behavior, which reads from HEAD:.mailmap in the
working tree). If it's missing, git will silently ignore the
setting.

We do not do the same magic in the non-bare case, because:

  1. In the common case, HEAD:.mailmap will be the same as
     the .mailmap in the working tree, which is a no-op.

  2. In the uncommon case, the user has modified .mailmap
     but not yet committed it, and would expect the working
     tree version to take precedence.

Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2012-12-13 10:22:13 -08:00
Jeff King
938a60d64f mailmap: clean up read_mailmap error handling
The error handling for the read_mailmap function is odd. It
returns 1 on error, rather than -1. And it treats a
non-existent mailmap as an error, even though there is no
reason that one needs to exist. Unless some other mailmap
source loads successfully, in which case the original error
is completely masked.

This does not cause any bugs, however, because no caller
bothers to check the return value, anyway. Let's make this a
little more robust to real errors and less surprising for
future callers that do check the error code:

  1. Return -1 on errors.

  2. Treat a missing entry (e.g., no mailmap.file given),
     ENOENT, or a non-existent blob (for mailmap.blob) as
     "no error".

  3. Complain loudly when a real error (e.g., a transient
     I/O error, no permission to open the mailmap file,
     missing or corrupted blob object, etc) occurs.

Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2012-12-12 11:14:09 -08:00
Jeff King
086109006f mailmap: support reading mailmap from blobs
In a bare repository, there isn't a simple way to respect an
in-tree mailmap without extracting it to a temporary file.
This patch provides a config variable, similar to
mailmap.file, which reads the mailmap from a blob in the
repository.

Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2012-12-12 11:12:35 -08:00
Jeff King
7c8ce308d3 mailmap: refactor mailmap parsing for non-file sources
The read_single_mailmap function opens a mailmap file and
parses each line. In preparation for having non-file
mailmaps, let's pull out the line-parsing logic into its own
function (read_mailmap_line), and rename the file-parsing
function to match (read_mailmap_file).

Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2012-12-12 11:09:37 -08:00
Romain Francoise
3174bc5ccf mailmap: avoid out-of-bounds memory access
AddressSanitizer (http://clang.llvm.org/docs/AddressSanitizer.html)
complains of a one-byte buffer underflow in parse_name_and_email() while
running the test suite. And indeed, if one of the lines in the mailmap
begins with '<', we dereference the address just before the beginning of
the buffer when looking for whitespace to remove, before checking that
we aren't going too far.

So reverse the order of the tests to make sure that we don't read
outside the buffer.

Signed-off-by: Romain Francoise <romain@orebokech.com>
Signed-off-by: Jeff King <peff@peff.net>
2012-10-28 07:50:18 -04:00
Junio C Hamano
f026358ef2 mailmap: always return a plain mail address from map_user()
The callers of map_user() give email and name to it, and expect to get the
up-to-date email and/or name to be used in their output. The function
rewrites the given buffers in place. To optimize the majority of cases,
the function returns 0 when it did not do anything, and it returns 1 when
the caller should use the updated contents.

The 'email' input to the function is terminated by '>' or a NUL (whichever
comes first) for historical reasons, but when a rewrite happens, the value
is replaced with the mailbox inside the <> pair.  However, it failed to
meet this expectation when it only rewrote the name part without rewriting
the email part, and the email in the input was terminated by '>'.

This causes an extra '>' to appear in the output of "blame -e", because the
caller does send in '>'-terminated email, and when the function returned 1
to tell it that rewriting happened, it appends '>' that is necessary when
the email part was rewritten.

The patch looks bigger than it actually is, because this change makes a
variable that points at the end of the email part in the input 'p' live
much longer than it used to, deserving a more descriptive name.

Noticed and diagnosed by Felipe Contreras and Jeff King.

Signed-off-by: Junio C Hamano <gitster@pobox.com>
2012-02-06 14:00:06 -08:00
Junio C Hamano
6d1cdadbee Merge branch 'ml/mailmap' into maint-1.7.6
* ml/mailmap:
  mailmap: xcalloc mailmap_info

Conflicts:
	mailmap.c
2011-12-13 21:12:14 -08:00
Marc-André Lureau
74b531f65f mailmap: xcalloc mailmap_info
This is to avoid reaching free of uninitialized members.

With an invalid .mailmap (and perhaps in other cases), it can reach
free(mi->name) with garbage for example.

Signed-off-by: Marc-André Lureau <marcandre.lureau@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2011-11-16 18:00:56 -08:00
Jim Meyering
d8d2eb7d6b mailmap: fix use of freed memory
On an x86_64 system (F13-based), I ran these commands in an empty directory:

    git init
    printf '%s\n' \
      '<jdoe@example.com> <jdoe@example.COM>' \
      'John <jdoe@example.com>' > .mailmap
    git shortlog < /dev/null

Here's the result:

    (reading log message from standard input)
    *** glibc detected *** git: free(): invalid pointer: 0x0000000000f53730 ***
    ======= Backtrace: =========
    /lib64/libc.so.6[0x31ba875676]
    git[0x48c2a5]
    git[0x4b9858]
    ...
    zsh: abort (core dumped)  git shortlog

What happened?

Some .mailmap entry is of the <email1> <email2> form,
while a subsequent one looks like "User Name <Email2>,
and the two email addresses on the right are not identical
but are "equal" when using a case-insensitive comparator.

Then, when add_mapping is processing the latter line, new_email is NULL
and we free me->email, yet do not replace it with a new strdup'd string.
Thus, when later we attempt to use the buffer behind that ->email pointer,
we reference freed memory.

The solution is to free ->email and ->name only if we're about to replace them.

[jc: squashed in the tests from Jonathan]

Signed-off-by: Jim Meyering <meyering@redhat.com>
Signed-off-by: Jonathan Nieder <jrnieder@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2010-10-13 19:11:26 -07:00
Julian Phillips
e8c8b7139c string_list: Fix argument order for string_list_lookup
Update the definition and callers of string_list_lookup to use the
string_list as the first argument.  This helps make the string_list
API easier to use by being more consistent.

Signed-off-by: Julian Phillips <julian@quantumfyre.co.uk>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2010-06-27 10:06:51 -07:00
Julian Phillips
aadceea641 string_list: Fix argument order for string_list_insert_at_index
Update the definition and callers of string_list_insert_at_index to
use the string_list as the first argument.  This helps make the
string_list API easier to use by being more consistent.

Signed-off-by: Julian Phillips <julian@quantumfyre.co.uk>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2010-06-27 10:06:51 -07:00
Julian Phillips
78a395d371 string_list: Fix argument order for string_list_insert
Update the definition and callers of string_list_insert to use the
string_list as the first argument.  This helps make the string_list
API easier to use by being more consistent.

Signed-off-by: Julian Phillips <julian@quantumfyre.co.uk>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2010-06-27 10:06:51 -07:00
Junio C Hamano
42b3b00614 mailmap.c: remove unused function
map_email() is not used anywhere.

Signed-off-by: Junio C Hamano <gitster@pobox.com>
2010-01-12 01:06:09 -08:00
Linus Torvalds
2af202be3d Fix various sparse warnings in the git source code
There are a few remaining ones, but this fixes the trivial ones. It boils
down to two main issues that sparse complains about:

 - warning: Using plain integer as NULL pointer

   Sparse doesn't like you using '0' instead of 'NULL'. For various good
   reasons, not the least of which is just the visual confusion. A NULL
   pointer is not an integer, and that whole "0 works as NULL" is a
   historical accident and not very pretty.

   A few of these remain: zlib is a total mess, and Z_NULL is just a 0.
   I didn't touch those.

 - warning: symbol 'xyz' was not declared. Should it be static?

   Sparse wants to see declarations for any functions you export. A lack
   of a declaration tends to mean that you should either add one, or you
   should mark the function 'static' to show that it's in file scope.

   A few of these remain: I only did the ones that should obviously just
   be made static.

That 'wt_status_submodule_summary' one is debatable. It has a few related
flags (like 'wt_status_use_color') which _are_ declared, and are used by
builtin-commit.c. So maybe we'd like to export it at some point, but it's
not declared now, and not used outside of that file, so 'static' it is in
this patch.

Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2009-06-20 21:52:55 -07:00
Junio C Hamano
02c62b10de Merge branch 'maint'
* maint:
  Documentation: Remove an odd "instead"
  fix portability problem with IS_RUN_COMMAND_ERR
  mailmap: resurrect lower-casing of email addresses
2009-04-01 22:46:31 -07:00
Björn Steinbrink
5288dd5835 Mailmap: Allow empty email addresses to be mapped
While it makes no sense to map some email address to an empty one, doing
things the other way around can be useful. For example when using
filter-branch with an env-filter that employs a mailmap to fix up an
import that created such broken commits with empty email addresses.

Signed-off-by: Björn Steinbrink <B.Steinbrink@gmx.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2009-04-01 15:53:36 -07:00
Johannes Schindelin
bf637803a7 mailmap: resurrect lower-casing of email addresses
Commit 0925ce4(Add map_user() and clear_mailmap() to mailmap) broke the
lower-casing of email addresses.  This mostly did not matter if your
.mailmap has only lower-case email addresses;  However, we did not
require .mailmap to contain lowercase-only email addresses.

Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2009-04-01 11:00:54 -07:00