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ls-remote: do not send ref prefixes for patterns 

Since b4be74105f (ls-remote: pass ref prefixes when requesting a
remote's refs, 2018-03-15), "ls-remote foo" will pass "refs/heads/foo",
"refs/tags/foo", etc to the transport code in an attempt to let the
other side reduce the size of its advertisement.

Unfortunately this is not correct, as ls-remote patterns do not follow
the usual ref lookup rules, and are in fact tail-matched. So we could
find "refs/heads/foo" or "refs/heads/a/much/deeper/foo" or even
"refs/another/hierarchy/foo".

Since we can't pass a prefix and there's not yet a v2 extension for
matching wildcards, we must disable this feature to keep the same
behavior as v1.

Reported-by: Jon Simons <jon@jonsimons.org>
Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
This commit is contained in:
Jeff King 2018-10-31 00:24:05 -04:00 committed by Junio C Hamano
parent 268fbcd172
commit 631f0f8c4b
2 changed files with 9 additions and 8 deletions
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8
builtin/ls-remote.c
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@ -88,15 +88,7 @@ int cmd_ls_remote(int argc, const char **argv, const char *prefix)
int i;
pattern = xcalloc(argc, sizeof(const char *));
for (i = 1; i < argc; i++) {
const char *glob;
pattern[i - 1] = xstrfmt("*/%s", argv[i]);
glob = strchr(argv[i], '*');
if (glob)
argv_array_pushf(&ref_prefixes, "%.*s",
(int)(glob - argv[i]), argv[i]);
else
expand_ref_prefix(&ref_prefixes, argv[i]);
}
}

9
t/t5512-ls-remote.sh
View File

@ -304,4 +304,13 @@ test_expect_success 'ls-remote works outside repository' '
nongit git ls-remote dst.git
'
test_expect_success 'ls-remote patterns work with all protocol versions' '
git for-each-ref --format="%(objectname) %(refname)" \
refs/heads/master refs/remotes/origin/master >expect &&
git -c protocol.version=1 ls-remote . master >actual.v1 &&
test_cmp expect actual.v1 &&
git -c protocol.version=2 ls-remote . master >actual.v2 &&
test_cmp expect actual.v2
'
test_done