Detect when the server doesn't support our hash algorithm and abort.
Signed-off-by: brian m. carlson <sandals@xxxxxxxxxxxxxxxxxxxx>
---
builtin/receive-pack.c | 9 +++++++++
1 file changed, 9 insertions(+)
diff --git a/builtin/receive-pack.c b/builtin/receive-pack.c
index a4159b559e..8755fa2463 100644
--- a/builtin/receive-pack.c
+++ b/builtin/receive-pack.c
@@ -1624,6 +1624,8 @@ static struct command *read_head_info(struct packet_reader *reader,
linelen = strlen(reader->line);
if (linelen < reader->pktlen) {
const char *feature_list = reader->line + linelen + 1;
+ const char *hash;
+ int len = 0;
if (parse_feature_request(feature_list, "report-status"))
report_status = 1;
if (parse_feature_request(feature_list, "side-band-64k"))
@@ -1636,6 +1638,13 @@ static struct command *read_head_info(struct packet_reader *reader,
if (advertise_push_options
&& parse_feature_request(feature_list, "push-options"))
use_push_options = 1;
+ hash = parse_feature_value(feature_list, "object-format", &len, NULL);
+ if (!hash) {
+ hash = hash_algos[GIT_HASH_SHA1].name;
+ len = strlen(hash);
+ }
+ if (xstrncmpz(the_hash_algo->name, hash, len))
+ die("error: unsupported object format '%s'", hash);
}
if (!strcmp(reader->line, "push-cert")) {
