remove the impression of unexpectedness when access is denied

If a server accessed through ssh is denying access git will currently
issue the message

	"fatal: The remote end hung up unexpectedly"

as the last line. This sounds as if something really ugly just happened.
Since this is a quite typical situation in which users regularly get
we do not say that if it happens at the beginning when reading the
remote heads.

If its in the very first beginning of reading the remote heads it is
very likely an authentication error or a missing repository.

If it happens later during reading the remote heads we still indicate
that it happened during this initial contact phase.

Signed-off-by: Heiko Voigt <hvoigt@hvoigt.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

1 files changed, 17 insertions, 1 deletions

diff --git a/connect.c b/connect.c
index d2ce57f850..fe6e9214b2 100644
--- a/connect.c
+++ b/connect.c
@@ -49,6 +49,16 @@ static void add_extra_have(struct extra_have_objects *extra, unsigned char *sha1
 	extra->nr++;
 }
 
+static void die_initial_contact(int got_at_least_one_head)
+{
+	if (got_at_least_one_head)
+		die("The remote end hung up upon initial contact");
+	else
+		die("Could not read from remote repository.\n\n"
+		    "Please make sure you have the correct access rights\n"
+		    "and the repository exists.");
+}
+
 /*
  * Read all the refs from the other end
  */
@@ -57,6 +67,8 @@ struct ref **get_remote_heads(int in, struct ref **list,
 			      unsigned int flags,
 			      struct extra_have_objects *extra_have)
 {
+	int got_at_least_one_head = 0;
+
 	*list = NULL;
 	for (;;) {
 		struct ref *ref;
@@ -65,7 +77,10 @@ struct ref **get_remote_heads(int in, struct ref **list,
 		char *name;
 		int len, name_len;
 
-		len = packet_read_line(in, buffer, sizeof(buffer));
+		len = packet_read(in, buffer, sizeof(buffer));
+		if (len < 0)
+			die_initial_contact(got_at_least_one_head);
+
 		if (!len)
 			break;
 		if (buffer[len-1] == '\n')
@@ -98,6 +113,7 @@ struct ref **get_remote_heads(int in, struct ref **list,
 		hashcpy(ref->old_sha1, old_sha1);
 		*list = ref;
 		list = &ref->next;
+		got_at_least_one_head = 1;
 	}
 	return list;
 }