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| author | Jeff King <peff@peff.net> | 2015-01-27 15:02:27 -0500 |
|---|---|---|
| committer | Junio C Hamano <gitster@pobox.com> | 2015-01-27 12:41:45 -0800 |
| commit | 8b9c2dd4dee01b5a0a9c5cfdd5a107f78edaceb7 (patch) | |
| tree | de84a902180787109e9a66c6f7df0f36c0342ad0 | |
| parent | 282616c72d1d08a77ca4fe1186cb708c38408d87 (diff) | |
| download | git-jk/dumb-http-idx-fetch-fix.tar.gz | |
dumb-http: do not pass NULL path to parse_pack_indexjk/dumb-http-idx-fetch-fix
Once upon a time, dumb http always fetched .idx files
directly into their final location, and then checked their
validity with parse_pack_index. This was refactored in
commit 750ef42 (http-fetch: Use temporary files for
pack-*.idx until verified, 2010-04-19), which uses the
following logic:
1. If we have the idx already in place, see if it's
valid (using parse_pack_index). If so, use it.
2. Otherwise, fetch the .idx to a tempfile, check
that, and if so move it into place.
3. Either way, fetch the pack itself if necessary.
However, it got step 1 wrong. We pass a NULL path parameter
to parse_pack_index, so an existing .idx file always looks
broken. Worse, we do not treat this broken .idx as an
opportunity to re-fetch, but instead return an error,
ignoring the pack entirely. This can lead to a dumb-http
fetch failing to retrieve the necessary objects.
This doesn't come up much in practice, because it must be a
packfile that we found out about (and whose .idx we stored)
during an earlier dumb-http fetch, but whose packfile we
_didn't_ fetch. I.e., we did a partial clone of a
repository, didn't need some packfiles, and now a followup
fetch needs them.
Discovery and tests by Charles Bailey <charles@hashpling.org>.
Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
| -rw-r--r-- | http.c | 2 | ||||
| -rwxr-xr-x | t/t5550-http-fetch-dumb.sh | 18 |
2 files changed, 19 insertions, 1 deletions
@@ -1157,7 +1157,7 @@ static int fetch_and_setup_pack_index(struct packed_git **packs_head, int ret; if (has_pack_index(sha1)) { - new_pack = parse_pack_index(sha1, NULL); + new_pack = parse_pack_index(sha1, sha1_pack_index_name(sha1)); if (!new_pack) return -1; /* parse_pack_index() already issued error message */ goto add_pack; diff --git a/t/t5550-http-fetch-dumb.sh b/t/t5550-http-fetch-dumb.sh index 1a3a2b6c1a..c3ba7ed0fe 100755 --- a/t/t5550-http-fetch-dumb.sh +++ b/t/t5550-http-fetch-dumb.sh @@ -165,6 +165,24 @@ test_expect_success 'fetch notices corrupt idx' ' ) ' +test_expect_success 'fetch can handle previously-fetched .idx files' ' + git checkout --orphan branch1 && + echo base >file && + git add file && + git commit -m base && + git --bare init "$HTTPD_DOCUMENT_ROOT_PATH"/repo_packed_branches.git && + git push "$HTTPD_DOCUMENT_ROOT_PATH"/repo_packed_branches.git branch1 && + git --git-dir="$HTTPD_DOCUMENT_ROOT_PATH"/repo_packed_branches.git repack -d && + git checkout -b branch2 branch1 && + echo b2 >>file && + git commit -a -m b2 && + git push "$HTTPD_DOCUMENT_ROOT_PATH"/repo_packed_branches.git branch2 && + git --git-dir="$HTTPD_DOCUMENT_ROOT_PATH"/repo_packed_branches.git repack -d && + git --bare init clone_packed_branches.git && + git --git-dir=clone_packed_branches.git fetch "$HTTPD_URL"/dumb/repo_packed_branches.git branch1:branch1 && + git --git-dir=clone_packed_branches.git fetch "$HTTPD_URL"/dumb/repo_packed_branches.git branch2:branch2 +' + test_expect_success 'did not use upload-pack service' ' grep '/git-upload-pack' <"$HTTPD_ROOT_PATH"/access.log >act : >exp |