If CGit is killed while it holds a lock on a cache slot (for example
because it is taking too long to generate a page), the lock file will be
left in place. This prevents any future attempt to use the same slot
since it will fail to exclusively create the lock file.
Since CGit is the only program that should be manipulating lock files,
we can use advisory locking to detect whether another process is
actually using the lock file or if it is now stale.
I have confirmed that this works on Linux by setting a short TTL in a
custom cgitrc and running the following with CGit patched to print a
message to stderr if the fcntl(2) fails:
$ export CGIT_CONFIG=$PWD/cgitrc
$ export QUERY_STRING=url=cgit/tree/ui-shared.c
$ ./cgit |
grep -v -e '^<div class=.footer.>' \
-e '^Last-Modified: ' \
-e ^'Expires: ' >expect
$ seq 50000 | dd bs=8192 |
parallel -j200 "diff -u expect <(./cgit |
grep -v -e '^<div class=.footer.>' \
-e '^Last-Modified: ' \
-e ^'Expires: ') || echo BAD"
This printed the fail message several times without ever printing "BAD".
Signed-off-by: John Keeping <john@keeping.me.uk>
* Use skip_prefix to avoid magic numbers in the code.
* Use xcalloc() instead of xmalloc(), followed by manual initialization.
* Split out line splitting.
Signed-off-by: Lukas Fleischer <cgit@cryptocrack.de>
Ran optipng against cgit.png, which shrank file size by more than eight
percent. The image (including protocol overhead) should fit into a
single network packet now.
Optipng optimizes filters and compression. The actual pixel results are
not altered.
Signed-off-by: Christian Hesse <mail@eworm.de>
The starts_with() check was broken in two ways: For one thing, the
parameters were passed in the wrong order, for another thing,
starts_with() returns 1 if the string starts with the prefix (not 0).
Note that this bug existed since commit 02a545e (Add support for cloning
over http, 2008-08-06) but only pops in in corner cases.
Signed-off-by: Lukas Fleischer <cgit@cryptocrack.de>
* sort_string_list(): rename to string_list_sort() (upstream commit
3383e199)
* update read_tree_recursive callback to pass strbuf as base (upstream
commit 6a0b0b6d)
Signed-off-by: Christian Hesse <mail@eworm.de>
These options can be used to hide a repository from the index or
completely ignore a repository, respectively. They are particularly
useful when used in combination with scan-path.
Signed-off-by: Lukas Fleischer <cgit@cryptocrack.de>
When clicking on "log" from a tag we end up showing the log of whatever
branch we used to reach the tag. If the tag doesn't point onto a branch
then the tagged commit won't appear in this output.
By linking to tags with the head parameter instead of the "id" parameter
the log link will show the log of the tag. This is clearly desirable
when the tag has been reached from the refs UI and changing the
behaviour for tag decorations makes them match branch decorations where
log -> decoration -> log shows the log of the decoration.
Reported-by: Ferry Huberts <mailings@hupie.com>
Signed-off-by: John Keeping <john@keeping.me.uk>
Currently, when a user directly accesses the info command of a
repository, we exit cgit without printing anything to stdout, bringing
up error messages like "502 Bad Gateway" or "An error occurred while
reading CGI reply (no response received)". Instead of bailing out, at
least print the HTTP headers, including a reasonable error message.
Reported-by: Janus Troelsen
Signed-off-by: Lukas Fleischer <cgit@cryptocrack.de>
Seeing the diff stat for a single file is pretty useless, so reset the
diff type before generating the links to individual files in the diff
stat so that the links will show a useful diff.
Reported-by: Konstantin Ryabitsev <mricon@kernel.org>
Signed-off-by: John Keeping <john@keeping.me.uk>
Using (DIFF_FORMAT_DIFFSTAT | DIFF_FORMAT_PATCH) causes Git to emit a
"---" line between the commit message and the body of the patch, which
fixes a regression introduced in commit 455b598 (ui-patch.c: Use
log_tree_commit() to generate diffs, 2013-08-20), prior to which we
inserted the "---" line ourselves.
DIFF_FORMAT_SUMMARY is added so that we match the output of
git-format-patch(1) without the "-p" option.
Signed-off-by: John Keeping <john@keeping.me.uk>
* &&-chaining
* use test_cmp instead of cmp
* use strip_headers instead of knowing how many lines there will be
Signed-off-by: John Keeping <john@keeping.me.uk>
Use Git's built-in ident line splitting algorithm instead of
reimplementing it. This does not only simplify the code but also makes
sure that cgit is consistent with Git when it comes to author parsing.
Signed-off-by: Lukas Fleischer <cgit@cryptocrack.de>
This will allow us to reuse the same logic to add clone URL <link/>
elements to the header of all repo-specific pages in order to support
the rel-vcs microformat.
Signed-off-by: John Keeping <john@keeping.me.uk>
When removing the ".git" suffix of a non-bare repository, also remove
the trailing slash for compatibility with cgit_repobasename().
Signed-off-by: Lukas Fleischer <cgit@cryptocrack.de>
Serving cgit via https and getting avatar via http gives error messages
about untrusted content. This decides whether or not to use https link
by looking at the environment variable HTTPS, which is set in CGI.
This prints the diffstat but stops before printing (or generating) any
of the body of the diff.
No cgitrc option is added here so that we can wait to see how useful
this is before letting people set it as the default.
Suggested-by: Konstantin Ryabitsev <mricon@kernel.org>
Signed-off-by: John Keeping <john@keeping.me.uk>
This will allow us to introduce a new "stat only" diff mode without
needing an explosion of mutually incompatible flags.
The old "ss" query parameter is still accepted in order to avoid
breaking saved links, but we no longer generate any URIs using it;
instead the new "dt" (diff type) parameter is used.
Signed-off-by: John Keeping <john@keeping.me.uk>
Specifying a nonexistent README file via the readme option is sometimes
useful, e.g. when using scan-path and setting a global default.
Currently, we check whether there is only one option in the readme
option and, if so, we choose that file without checking whether it
exists. As a consequence, all repositories are equipped with an about
link in the aforementioned scenario, even if there is no about file.
Remove the early check for the number of keys and always check whether
the file exists instead.
Signed-off-by: Lukas Fleischer <cgit@cryptocrack.de>
This is slightly more involved than just bumping the version number
because it pulls in a change to convert the commit buffer to a slab,
removing the "buffer" field from "struct commit". All sites that access
"commit->buffer" have been changed to use the new functions provided for
this purpose.
Signed-off-by: John Keeping <john@keeping.me.uk>
It looks like cached patches are truncated to the nearest 1024-byte
boundary in the patch body. E.g.:
> mricon@nikko:[/tmp]$ wget -O no-cache
> "http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/patch/?id=6e1b4fdad5157bb9e88777d525704aba24389bee"
...
> 2014-06-11 15:34:51 (80.4 MB/s) - ‘no-cache’ saved [4767]
Patch is complete, without truncation. Next hit, with cache in place:
> mricon@nikko:[/tmp]$ wget -O yes-cache
> "http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/patch/?id=6e1b4
> fdad5157bb9e88777d525704aba24389bee"
...
> 2014-06-11 15:35:01 (17.0 MB/s) - ‘yes-cache’ saved [4096/4096]
Length truncated to 4096. The cache on disk looks truncated as well, so
the bug must me during the process of saving cache. The same is true for
larger patches:
> mricon@nikko:[/tmp]$ wget -O no-cache
> "http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/patch/?id=2840c566e95599cd60c7143762ca8b49d9395050"
...
> 2014-06-11 15:41:33 (1.07 MB/s) - ‘no-cache’ saved [979644]
979644 bytes with a cache-miss
> mricon@nikko:[/tmp]$ wget -O yes-cache
> "http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/patch/?id=2840c
> 566e95599cd60c7143762ca8b49d9395050"
...
> 2014-06-11 15:41:46 (1.05 MB/s) - ‘yes-cache’ saved [978944]
978944 (956KB exactly) with a cache-hit
Since the "html" functions use raw write(2) to STDIO_FILENO, we don't
notice problems with most pages, but raw patches write using printf(3).
This is fine if we're outputting straight to stdout since the buffers
are flushed on exit, but we close the cache output before this, so the
cached output ends up being truncated.
Make sure the buffers are flushed when we finish outputting a patch so
that we avoid this.
No other UIs use printf(3) so we do not need to worry about them.
Actually, it's slightly more interesting than this... since we don't set
GIT_FLUSH, Git decides whether or not it will flush stdout after writing
each commit based on whether or not stdout points to a regular file (in
maybe_flush_or_die()).
Which means that when writing directly to the webserver, Git flushes
stdout for us, but when we redirect stdout to the cache it points to a
regular file so Git no longer flushes the output for us.
The patch is still correct, but perhaps the full explanation is
interesting!
Reported-by: Konstantin Ryabitsev <mricon@kernel.org>
If you search for a bogus range string here:
http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/log/
Using something like "range" and "qwerty123456", it returns an "Internal
Server Error" and the following in the logs:
> [Tue Jun 10 17:45:32 2014] [error] [client 172.21.1.6] fatal:
> ambiguous argument 'qwerty123456': unknown revision or path not in the
> working tree., referer:
> http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/
> [Tue Jun 10 17:45:32 2014] [error] [client 172.21.1.6] Use '--' to
> separate paths from revisions, like this:, referer:
> http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/
> [Tue Jun 10 17:45:32 2014] [error] [client 172.21.1.6] 'git <command>
> [<revision>...] -- [<file>...]', referer:
> http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/
> [Tue Jun 10 17:45:32 2014] [error] [client 172.21.1.6] Premature end
> of script headers: cgit, referer:
> http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/
The cache will kick in, so if you search for the same string again,
it'll show an empty range, so you have to change the bogus strings each
time.
This is because we just pass the arguments straight to Git's revision
parsing machinery which die()s if it cannot parse an argument, printing
the above to stderr and exiting.
The patch below makes it a bit friendlier by just ignoring unhandled
arguments, but I can't see an easy way to report errors when we can't
parse revision arguments without losing the flexibility of supporting
all of the revision specifiers supported by Git.
Reported-by: Konstantin Ryabitsev <mricon@kernel.org>
