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fetch-pack: parse and advertise the object-format capability

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Parse the server's object-format capability and respond accordingly,
dying if there is a mismatch.

Signed-off-by: brian m. carlson <sandals@crustytoothpaste.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
This commit is contained in:
brian m. carlson 2020-05-25 19:59:07 +00:00 committed by Junio C Hamano
parent 9dc78c20dc
commit 4b831208bb
1 changed files with 12 additions and 0 deletions
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12
fetch-pack.c
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@ -1179,6 +1179,7 @@ static int send_fetch_request(struct fetch_negotiator *negotiator, int fd_out,
int sideband_all, int seen_ack)
{
int ret = 0;
const char *hash_name;
struct strbuf req_buf = STRBUF_INIT;
if (server_supports_v2("fetch", 1))
@ -1193,6 +1194,17 @@ static int send_fetch_request(struct fetch_negotiator *negotiator, int fd_out,
args->server_options->items[i].string);
}
if (server_feature_v2("object-format", &hash_name)) {
int hash_algo = hash_algo_by_name(hash_name);
if (hash_algo_by_ptr(the_hash_algo) != hash_algo)
die(_("mismatched algorithms: client %s; server %s"),
the_hash_algo->name, hash_name);
packet_write_fmt(fd_out, "object-format=%s", the_hash_algo->name);
} else if (hash_algo_by_ptr(the_hash_algo) != GIT_HASH_SHA1) {
die(_("the server does not support algorithm '%s'"),
the_hash_algo->name);
}
packet_buf_delim(&req_buf);
if (args->use_thin_pack)
packet_buf_write(&req_buf, "thin-pack");