From: "Shawn O. Pearce" <spearce@xxxxxxxxxxx>
The protocol between transport-helper.c and remote-curl requires
remote-curl to always print a blank line after the push command
has run. If the blank line is ommitted, transport-helper kills its
container process (the git push the user started) with exit(128)
and no message indicating a problem, assuming the helper already
printed reasonable error text to the console.
However if the remote rejects all branches with "ng" commands in the
report-status reply, send-pack terminates with non-zero status, and
in turn remote-curl exited with non-zero status before outputting
the blank line after the helper status printed by send-pack. No
error messages reach the user.
This caused users to see the following from git push over HTTP
when the remote side's update hook rejected the branch:
$ git push http://... master
Counting objects: 4, done.
Delta compression using up to 6 threads.
Compressing objects: 100% (2/2), done.
Writing objects: 100% (3/3), 301 bytes, done.
Total 3 (delta 0), reused 0 (delta 0)
$
Always print a blank line after the send-pack process terminates,
ensuring the helper status report (if it was output) will be
correctly parsed by the calling transport-helper.c. This ensures
the helper doesn't abort before the status report can be shown to
the user.
Signed-off-by: Shawn O. Pearce <spearce@xxxxxxxxxxx>
---
remote-curl.c | 9 ++++-----
1 files changed, 4 insertions(+), 5 deletions(-)
diff --git a/remote-curl.c b/remote-curl.c
index 48c20b8..d6054e2 100644
--- a/remote-curl.c
+++ b/remote-curl.c
@@ -805,7 +805,7 @@ static int push(int nr_spec, char **specs)
static void parse_push(struct strbuf *buf)
{
char **specs = NULL;
- int alloc_spec = 0, nr_spec = 0, i;
+ int alloc_spec = 0, nr_spec = 0, i, ret;
do {
if (!prefixcmp(buf->buf, "push ")) {
@@ -822,12 +822,11 @@ static void parse_push(struct strbuf *buf)
break;
} while (1);
- if (push(nr_spec, specs))
+ ret = push(nr_spec, specs);
+ xwrite(1, "\n", 1);
+ if (ret)
exit(128); /* error already reported */
- printf("\n");
- fflush(stdout);
-
free_specs:
for (i = 0; i < nr_spec; i++)
free(specs[i]);
--
1.7.8.4.dirty
--
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