diff options
author | Carlos Rica <jasampler@gmail.com> | 2007-09-09 04:39:29 +0400 |
---|---|---|
committer | Junio C Hamano <gitster@pobox.com> | 2007-09-10 08:30:54 +0400 |
commit | aba91192ae39cd1a2f79e7ed91e966df3cfe10b7 (patch) | |
tree | 6f68caf0e578b206528a5b9d627f98b3914f1937 /t/t7004-tag.sh | |
parent | 7b02b85a66fee6b357e02f9e70dd0baa0fd24308 (diff) |
git-tag -s must fail if gpg cannot sign the tag.
Most of this patch code and message was written by Shawn O. Pearce.
I made some tests to know what the problem was, and then I changed
the code related with the SIGPIPE signal.
If the user has misconfigured `user.signingkey` in their .git/config
or just doesn't have any secret keys on their keyring and they ask
for a signed tag with `git tag -s` we better make sure the resulting
tag was actually signed by gpg.
Prior versions of builtin git-tag allowed this failure to slip
by without error as they were not checking the return value of
the finish_command() so they did not notice when gpg exited with
an error exit status. They also did not fail if gpg produced an
empty output or if read_in_full received an error from the read
system call while trying to read the pipe back from gpg.
Finally, we did not actually honor any return value from the do_sign
function as it returns ssize_t but was being stored into an unsigned
long. This caused the compiler to optimize out the die condition,
allowing git-tag to continue along and create the tag object.
However, when gpg gets a wrong username, it exits before any read was done
and then the writing process receives SIGPIPE and program is terminated.
By ignoring this signal, anyway, the function write_or_die gets EPIPE from
write_in_full and exits returning 0 to the system without a message.
Here we better call to write_in_full directly so we can fail
printing a message and return safely to the caller.
With these issues fixed `git-tag -s` will now fail to create the
tag and will report a non-zero exit status to its caller, thereby
allowing automated helper scripts to detect (and recover from)
failure if gpg is not working properly.
Proposed-by: Shawn O. Pearce <spearce@spearce.org>
Signed-off-by: Carlos Rica <jasampler@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Diffstat (limited to 't/t7004-tag.sh')
-rwxr-xr-x | t/t7004-tag.sh | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/t/t7004-tag.sh b/t/t7004-tag.sh index 606d4f2a2c..0d07bc39c7 100755 --- a/t/t7004-tag.sh +++ b/t/t7004-tag.sh @@ -990,6 +990,13 @@ test_expect_success \ git diff expect actual ' +# try to sign with bad user.signingkey +git config user.signingkey BobTheMouse +test_expect_failure \ + 'git-tag -s fails if gpg is misconfigured' \ + 'git tag -s -m tail tag-gpg-failure' +git config --unset user.signingkey + # try to verify without gpg: rm -rf gpghome |