From 4b831208bb365fedd0cce286e0c27627598d9393 Mon Sep 17 00:00:00 2001 From: "brian m. carlson" Date: Mon, 25 May 2020 19:59:07 +0000 Subject: [PATCH] fetch-pack: parse and advertise the object-format capability Parse the server's object-format capability and respond accordingly, dying if there is a mismatch. Signed-off-by: brian m. carlson Signed-off-by: Junio C Hamano --- fetch-pack.c | 12 ++++++++++++ 1 file changed, 12 insertions(+) diff --git a/fetch-pack.c b/fetch-pack.c index 1d277190e7..d5a919f2aa 100644 --- a/fetch-pack.c +++ b/fetch-pack.c @@ -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"); -- 2.39.2