From 8b85ee4f47aadc23c8806bff5540baf819bbde95 Mon Sep 17 00:00:00 2001 From: "brian m. carlson" Date: Mon, 25 May 2020 19:59:03 +0000 Subject: transport-helper: implement object-format extensions Implement the object-format extensions that let us determine the hash algorithm in use when pushing or pulling data. Signed-off-by: brian m. carlson Signed-off-by: Junio C Hamano --- transport-helper.c | 24 ++++++++++++++++++++++-- 1 file changed, 22 insertions(+), 2 deletions(-) (limited to 'transport-helper.c') diff --git a/transport-helper.c b/transport-helper.c index a46afcb69d..ae33b0eea7 100644 --- a/transport-helper.c +++ b/transport-helper.c @@ -32,7 +32,8 @@ struct helper_data { signed_tags : 1, check_connectivity : 1, no_disconnect_req : 1, - no_private_update : 1; + no_private_update : 1, + object_format : 1; /* * As an optimization, the transport code may invoke fetch before @@ -207,6 +208,8 @@ static struct child_process *get_helper(struct transport *transport) data->import_marks = xstrdup(arg); } else if (starts_with(capname, "no-private-update")) { data->no_private_update = 1; + } else if (starts_with(capname, "object-format")) { + data->object_format = 1; } else if (mandatory) { die(_("unknown mandatory capability %s; this remote " "helper probably needs newer version of Git"), @@ -1103,6 +1106,12 @@ static struct ref *get_refs_list_using_list(struct transport *transport, data->get_refs_list_called = 1; helper = get_helper(transport); + if (data->object_format) { + write_str_in_full(helper->in, "option object-format\n"); + if (recvline(data, &buf) || strcmp(buf.buf, "ok")) + exit(128); + } + if (data->push && for_push) write_str_in_full(helper->in, "list for-push\n"); else @@ -1115,6 +1124,17 @@ static struct ref *get_refs_list_using_list(struct transport *transport, if (!*buf.buf) break; + else if (buf.buf[0] == ':') { + const char *value; + if (skip_prefix(buf.buf, ":object-format ", &value)) { + int algo = hash_algo_by_name(value); + if (algo == GIT_HASH_UNKNOWN) + die(_("unsupported object format '%s'"), + value); + transport->hash_algo = &hash_algos[algo]; + } + continue; + } eov = strchr(buf.buf, ' '); if (!eov) @@ -1127,7 +1147,7 @@ static struct ref *get_refs_list_using_list(struct transport *transport, if (buf.buf[0] == '@') (*tail)->symref = xstrdup(buf.buf + 1); else if (buf.buf[0] != '?') - get_oid_hex(buf.buf, &(*tail)->old_oid); + get_oid_hex_algop(buf.buf, &(*tail)->old_oid, transport->hash_algo); if (eon) { if (has_attribute(eon + 1, "unchanged")) { (*tail)->status |= REF_STATUS_UPTODATE; -- cgit v1.2.3