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send-pack: tighten checks for remote names

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"git push $URL HEAD~6" created a bogus ref HEAD~6 immediately
under $GIT_DIR of the remote repository.  While we should keep
refspecs that have arbitrary extended SHA-1 expression on the
source side working (e.g. "HEAD~6:refs/tags/yesterday"), we
should not create bogus ref on the other end.

Signed-off-by: Junio C Hamano <junkio@cox.net>
This commit is contained in:
Junio C Hamano 2006-12-13 10:30:11 -08:00
parent 411fb8baa6
commit 37adac765a
2 changed files with 22 additions and 1 deletions
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2
refs.c
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@ -534,7 +534,7 @@ int check_ref_format(const char *ref)
level++;
if (!ch) {
if (level < 2)
return -1; /* at least of form "heads/blah" */
return -2; /* at least of form "heads/blah" */
return 0;
}
}

21
send-pack.c
View File

@ -406,6 +406,25 @@ static int send_pack(int in, int out, int nr_refspec, char **refspec)
return ret;
}
static void verify_remote_names(int nr_heads, char **heads)
{
int i;
for (i = 0; i < nr_heads; i++) {
const char *remote = strchr(heads[i], ':');
remote = remote ? (remote + 1) : heads[i];
switch (check_ref_format(remote)) {
case 0: /* ok */
case -2: /* ok but a single level -- that is fine for
* a match pattern.
*/
continue;
}
die("remote part of refspec is not a valid name in %s",
heads[i]);
}
}
int main(int argc, char **argv)
{
@ -457,6 +476,8 @@ int main(int argc, char **argv)
usage(send_pack_usage);
if (heads && send_all)
usage(send_pack_usage);
verify_remote_names(nr_heads, heads);
pid = git_connect(fd, dest, exec);
if (pid < 0)
return 1;