git/ident.c, branch v2.0.2

Merge branch 'jk/split-broken-ident'

2013-10-28T17:43:32Z

Make the fall-back parsing of commit objects with broken author or committer lines more robust to pick up the timestamps. * jk/split-broken-ident: split_ident: parse timestamp from end of line

split_ident: parse timestamp from end of line

2013-10-15T17:41:49Z

Split_ident currently parses left to right. Given this input: Your Name 123456789 -0500\n We assume the name starts the line and runs until the first "<". That starts the email address, which runs until the first ">". Everything after that is assumed to be the timestamp. This works fine in the normal case, but is easily broken by corrupted ident lines that contain an extra ">". Some examples seen in the wild are: 1. Name -<> 123456789 -0500\n 2. Name > 123456789 -0500\n 3. Name1 , Name2 123456789 -0500\n Currently each of these produces some email address (which is not necessarily the one the user intended) and end up with a NULL date (which is generally interpreted as the epoch by "git log" and friends). But in each case we could get the correct timestamp simply by parsing from the right-hand side, looking backwards for the final ">", and then reading the timestamp from there. In general, it's a losing battle to try to automatically guess what the user meant with their broken crud. But this particular workaround is probably worth doing. One, it's dirt simple, and can't impact non-broken cases. Two, it doesn't catch a single breakage we've seen, but rather a large class of errors (i.e., any breakage inside the email angle brackets may affect the email, but won't spill over into the timestamp parsing). And three, the timestamp is arguably more valuable to get right, because it can affect correctness (e.g., in --until cutoffs). This patch implements the right-to-left scheme described above. We adjust the tests in t4212, which generate a commit with such a broken ident, and now gets the timestamp right. We also add a test that fsck continues to detect the breakage. For reference, here are pointers to the breakages seen (as numbered above): [1] http://article.gmane.org/gmane.comp.version-control.git/221441 [2] http://article.gmane.org/gmane.comp.version-control.git/222362 [3] http://perl5.git.perl.org/perl.git/commit/13b79730adea97e660de84bbe67f9d7cbe344302 Signed-off-by: Jeff King Signed-off-by: Junio C Hamano

format-patch: print in-body "From" only when needed

2013-09-20T18:09:51Z

Commit a908047 taught format-patch the "--from" option, which places the author ident into an in-body from header, and uses the committer ident in the rfc822 from header. The documentation claims that it will omit the in-body header when it is the same as the rfc822 header, but the code never implemented that behavior. This patch completes the feature by comparing the two idents and doing nothing when they are the same (this is the same as simply omitting the in-body header, as the two are by definition indistinguishable in this case). This makes it reasonable to turn on "--from" all the time (if it matches your particular workflow), rather than only using it when exporting other people's patches. Signed-off-by: Jeff King Signed-off-by: Junio C Hamano

Merge branch 'jn/do-not-drop-username-when-reading-from-etc-mailname'

2013-02-01T20:40:05Z

We used to stuff "user@" and then append what we read from /etc/mailname to come up with a default e-mail ident, but a bug lost the "user@" part. This is to fix it. * jn/do-not-drop-username-when-reading-from-etc-mailname: ident: do not drop username when reading from /etc/mailname

ident: do not drop username when reading from /etc/mailname

2013-01-25T18:41:49Z

An earlier conversion from fgets() to strbuf_getline() in the codepath to read from /etc/mailname to learn the default host-part of the ident e-mail address forgot that strbuf_getline() stores the line at the beginning of the buffer just like fgets(). The "username@" the caller has prepared in the strbuf, expecting the function to append the host-part to it, was lost because of this. Reported-by: Mihai Rusu Signed-off-by: Jonathan Nieder Acked-by: Jeff King Signed-off-by: Junio C Hamano

ident: keep separate "explicit" flags for author and committer

2012-11-16T01:47:24Z

We keep track of whether the user ident was given to us explicitly, or if we guessed at it from system parameters like username and hostname. However, we kept only a single variable. This covers the common cases (because the author and committer will usually come from the same explicit source), but can miss two cases: 1. GIT_COMMITTER_* is set explicitly, but we fallback for GIT_AUTHOR. We claim the ident is explicit, even though the author is not. 2. GIT_AUTHOR_* is set and we ask for author ident, but not committer ident. We will claim the ident is implicit, even though it is explicit. This patch uses two variables instead of one, updates both when we set the "fallback" values, and updates them individually when we read from the environment. Rather than keep user_ident_sufficiently_given as a compatibility wrapper, we update the only two callers to check the committer_ident, which matches their intent and what was happening already. Signed-off-by: Jeff King Signed-off-by: Junio C Hamano

ident: make user_ident_explicitly_given static

2012-11-16T01:47:24Z

In v1.5.6-rc0~56^2 (2008-05-04) "user_ident_explicitly_given" was introduced as a global for communication between config, ident, and builtin-commit. In v1.7.0-rc0~72^2 (2010-01-07) readers switched to using the common wrapper user_ident_sufficiently_given(). After v1.7.11-rc1~15^2~18 (2012-05-21), the var is only written in ident.c. Now we can make it static, which will enable further refactoring without worrying about upsetting other code. Signed-off-by: Jeff King Reviewed-by: Jonathan Nieder Signed-off-by: Junio C Hamano

ident.c: mark private file-scope symbols as static

2012-09-16T05:58:21Z

Signed-off-by: Junio C Hamano

split_ident_line(): make best effort when parsing author/committer line

2012-08-31T21:54:18Z

Commits made by ancient version of Git allowed committer without human readable name, like this (00213b17c in the kernel history): tree 6947dba41f8b0e7fe7bccd41a4840d6de6a27079 parent 352dd1df32e672be4cff71132eb9c06a257872fe author Petr Baudis 1135223044 +0100 committer 1136151043 +0100 kconfig: Remove support for lxdialog --checklist ... Signed-off-by: Petr Baudis Signed-off-by: Sam Ravnborg When fed such a commit, --format='%ci' fails to parse it, and gives back an empty string. Update the split_ident_line() to be a bit more lenient when parsing, but make sure the caller that wants to pick up sane value from its return value does its own validation. Signed-off-by: Junio C Hamano

Merge branch 'jk/ident-gecos-strbuf'

2012-05-29T20:09:13Z

Fixes quite a lot of brokenness when ident information needs to be taken from the system and cleans up the code. By Jeff King * jk/ident-gecos-strbuf: (22 commits) format-patch: do not use bogus email addresses in message ids ident: reject bogus email addresses with IDENT_STRICT ident: rename IDENT_ERROR_ON_NO_NAME to IDENT_STRICT format-patch: use GIT_COMMITTER_EMAIL in message ids ident: let callers omit name with fmt_indent ident: refactor NO_DATE flag in fmt_ident ident: reword empty ident error message format-patch: refactor get_patch_filename ident: trim whitespace from default name/email ident: use a dynamic strbuf in fmt_ident ident: use full dns names to generate email addresses ident: report passwd errors with a more friendly message drop length limitations on gecos-derived names and emails ident: don't write fallback username into git_default_name fmt_ident: drop IDENT_WARN_ON_NO_NAME code format-patch: use default email for generating message ids ident: trim trailing newline from /etc/mailname move git_default_* variables to ident.c move identity config parsing to ident.c fmt-merge-msg: don't use static buffer in record_person ...