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receive-pack: Send internal errors over side-band #2

If the client has requested side-band-64k capability, send any
of the internal error or warning messages in the muxed side-band
stream using the same band as our hook output, band #2.  By putting
everything in one stream we ensure all messages are processed by
the side-band demuxer, avoiding interleaving between our own stderr
and the side-band demuxer's stderr buffers.

Signed-off-by: Shawn O. Pearce <spearce@spearce.org>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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1 parent 6b3fa7e commit 466dbc42f58623d4341d6b1171b5cc13e2b700df @spearce spearce committed with gitster Feb 10, 2010
Showing with 52 additions and 15 deletions.
  1. +50 −14 builtin-receive-pack.c
  2. +2 −1 t/t5401-update-hooks.sh
@@ -139,6 +139,42 @@ static struct command *commands;
static const char pre_receive_hook[] = "hooks/pre-receive";
static const char post_receive_hook[] = "hooks/post-receive";
+static void rp_error(const char *err, ...) __attribute__((format (printf, 1, 2)));
+static void rp_warning(const char *err, ...) __attribute__((format (printf, 1, 2)));
+
+static void report_message(const char *prefix, const char *err, va_list params)
+{
+ int sz = strlen(prefix);
+ char msg[4096];
+
+ strncpy(msg, prefix, sz);
+ sz += vsnprintf(msg + sz, sizeof(msg) - sz, err, params);
+ if (sz > (sizeof(msg) - 1))
+ sz = sizeof(msg) - 1;
+ msg[sz++] = '\n';
+
+ if (use_sideband)
+ send_sideband(1, 2, msg, sz, use_sideband);
+ else
+ xwrite(2, msg, sz);
+}
+
+static void rp_warning(const char *err, ...)
+{
+ va_list params;
+ va_start(params, err);
+ report_message("warning: ", err, params);
+ va_end(params);
+}
+
+static void rp_error(const char *err, ...)
+{
+ va_list params;
+ va_start(params, err);
+ report_message("error: ", err, params);
+ va_end(params);
+}
+
static int copy_to_sideband(int in, int out, void *arg)
{
char data[128];
@@ -276,7 +312,7 @@ static void warn_unconfigured_deny(void)
{
int i;
for (i = 0; i < ARRAY_SIZE(warn_unconfigured_deny_msg); i++)
- warning("%s", warn_unconfigured_deny_msg[i]);
+ rp_warning("%s", warn_unconfigured_deny_msg[i]);
}
static char *warn_unconfigured_deny_delete_current_msg[] = {
@@ -302,7 +338,7 @@ static void warn_unconfigured_deny_delete_current(void)
for (i = 0;
i < ARRAY_SIZE(warn_unconfigured_deny_delete_current_msg);
i++)
- warning("%s", warn_unconfigured_deny_delete_current_msg[i]);
+ rp_warning("%s", warn_unconfigured_deny_delete_current_msg[i]);
}
static const char *update(struct command *cmd)
@@ -314,7 +350,7 @@ static const char *update(struct command *cmd)
/* only refs/... are allowed */
if (prefixcmp(name, "refs/") || check_ref_format(name + 5)) {
- error("refusing to create funny ref '%s' remotely", name);
+ rp_error("refusing to create funny ref '%s' remotely", name);
return "funny refname";
}
@@ -324,12 +360,12 @@ static const char *update(struct command *cmd)
break;
case DENY_UNCONFIGURED:
case DENY_WARN:
- warning("updating the current branch");
+ rp_warning("updating the current branch");
if (deny_current_branch == DENY_UNCONFIGURED)
warn_unconfigured_deny();
break;
case DENY_REFUSE:
- error("refusing to update checked out branch: %s", name);
+ rp_error("refusing to update checked out branch: %s", name);
return "branch is currently checked out";
}
}
@@ -342,7 +378,7 @@ static const char *update(struct command *cmd)
if (!is_null_sha1(old_sha1) && is_null_sha1(new_sha1)) {
if (deny_deletes && !prefixcmp(name, "refs/heads/")) {
- error("denying ref deletion for %s", name);
+ rp_error("denying ref deletion for %s", name);
return "deletion prohibited";
}
@@ -354,10 +390,10 @@ static const char *update(struct command *cmd)
case DENY_UNCONFIGURED:
if (deny_delete_current == DENY_UNCONFIGURED)
warn_unconfigured_deny_delete_current();
- warning("deleting the current branch");
+ rp_warning("deleting the current branch");
break;
case DENY_REFUSE:
- error("refusing to delete the current branch: %s", name);
+ rp_error("refusing to delete the current branch: %s", name);
return "deletion of the current branch prohibited";
}
}
@@ -387,31 +423,31 @@ static const char *update(struct command *cmd)
break;
free_commit_list(bases);
if (!ent) {
- error("denying non-fast-forward %s"
- " (you should pull first)", name);
+ rp_error("denying non-fast-forward %s"
+ " (you should pull first)", name);
return "non-fast-forward";
}
}
if (run_update_hook(cmd)) {
- error("hook declined to update %s", name);
+ rp_error("hook declined to update %s", name);
return "hook declined";
}
if (is_null_sha1(new_sha1)) {
if (!parse_object(old_sha1)) {
- warning ("Allowing deletion of corrupt ref.");
+ rp_warning("Allowing deletion of corrupt ref.");
old_sha1 = NULL;
}
if (delete_ref(name, old_sha1, 0)) {
- error("failed to delete %s", name);
+ rp_error("failed to delete %s", name);
return "failed to delete";
}
return NULL; /* good */
}
else {
lock = lock_any_ref_for_update(name, old_sha1, 0);
if (!lock) {
- error("failed to lock %s", name);
+ rp_error("failed to lock %s", name);
return "failed to lock";
}
if (write_ref_sha1(lock, new_sha1, "push")) {
@@ -124,14 +124,15 @@ remote: STDOUT update refs/heads/master
remote: STDERR update refs/heads/master
remote: STDOUT update refs/heads/tofail
remote: STDERR update refs/heads/tofail
+remote: error: hook declined to update refs/heads/tofail
remote: STDOUT post-receive
remote: STDERR post-receive
remote: STDOUT post-update
remote: STDERR post-update
EOF
test_expect_success 'send-pack stderr contains hook messages' '
grep ^remote: send.err | sed "s/ *\$//" >actual &&
- test_cmp - actual <expect
+ test_cmp expect actual
'
test_done

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