From: Tom Preston-Werner <tom@github.com>
Date: Sat, 1 Nov 2008 18:44:45 +0000 (-0700)
Subject: connect.c: add a way for git-daemon to pass an error back to client
X-Git-Tag: v1.6.1-rc1~101
X-Git-Url: http://git.tremily.us/?a=commitdiff_plain;h=a807328;p=git.git

connect.c: add a way for git-daemon to pass an error back to client

The current behavior of git-daemon is to simply close the connection on
any error condition. This leaves the client without any information as
to the cause of the failed fetch/push/etc.

This patch allows get_remote_heads to accept a line prefixed with "ERR"
that it can display to the user in an informative fashion. Once clients
can understand this ERR line, git-daemon can be made to properly report
"repository not found", "permission denied", or other errors.

Example

S: ERR No matching repository.
C: fatal: remote error: No matching repository.

Signed-off-by: Tom Preston-Werner <tom@github.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
---

diff --git a/connect.c b/connect.c
index 0c50d0a26..584e04c21 100644
--- a/connect.c
+++ b/connect.c
@@ -70,6 +70,9 @@ struct ref **get_remote_heads(int in, struct ref **list,
 		if (buffer[len-1] == '\n')
 			buffer[--len] = 0;
 
+		if (len > 4 && !prefixcmp(buffer, "ERR "))
+			die("remote error: %s", buffer + 4);
+
 		if (len < 42 || get_sha1_hex(buffer, old_sha1) || buffer[40] != ' ')
 			die("protocol error: expected sha/ref, got '%s'", buffer);
 		name = buffer + 41;