git-commit-vandalism/t/t5541-http-push.sh
Jeff King 02f7914734 remote-curl: don't pass back fake refs
When receive-pack advertises its list of refs, it generally hides the
capabilities information after a NUL at the end of the first ref.

However, when we have an empty repository, there are no refs, and
therefore receive-pack writes a fake ref "capabilities^{}" with the
capabilities afterwards.

On the client side, git reads the result with get_remote_heads(). We pick
the capabilities from the end of the line, and then call check_ref() to
make sure the ref name is valid. We see that it isn't, and don't bother
adding it to our list of refs.

However, the call to check_ref() is enabled by passing the REF_NORMAL flag
to get_remote_heads. For the regular git transport, we pass REF_NORMAL in
get_refs_via_connect() if we are doing a push (since only receive-pack
uses this fake ref).  But in remote-curl, we never use this flag, and we
accept the fake ref as a real one, passing it back from the helper to the
parent git-push.

Most of the time this bug goes unnoticed, as the fake ref won't match our
refspecs. However, if "--mirror" is used, then we see it as remote cruft
to be pruned, and try to pass along a deletion refspec for it. Of course
this refspec has bogus syntax (because of the ^{}), and the helper
complains, aborting the push.

Let's have remote-curl mirror what the builtin get_refs_via_connect() does
(at least for the case of using git protocol; we can leave the dumb
info/refs reader as it is).

This also fixes pushing with --mirror to a smart-http remote that uses
alternates. The fake ".have" refs the server gives to avoid unnecessary
network transfer has a similar bad interactions with the machinery.

Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2011-12-19 11:21:29 -08:00

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#!/bin/sh
#
# Copyright (c) 2008 Clemens Buchacher <drizzd@aon.at>
#
test_description='test smart pushing over http via http-backend'
. ./test-lib.sh
if test -n "$NO_CURL"; then
skip_all='skipping test, git built without http support'
test_done
fi
ROOT_PATH="$PWD"
LIB_HTTPD_PORT=${LIB_HTTPD_PORT-'5541'}
. "$TEST_DIRECTORY"/lib-httpd.sh
start_httpd
test_expect_success 'setup remote repository' '
cd "$ROOT_PATH" &&
mkdir test_repo &&
cd test_repo &&
git init &&
: >path1 &&
git add path1 &&
test_tick &&
git commit -m initial &&
cd - &&
git clone --bare test_repo test_repo.git &&
cd test_repo.git &&
git config http.receivepack true &&
ORIG_HEAD=$(git rev-parse --verify HEAD) &&
cd - &&
mv test_repo.git "$HTTPD_DOCUMENT_ROOT_PATH"
'
cat >exp <<EOF
GET /smart/test_repo.git/info/refs?service=git-upload-pack HTTP/1.1 200
POST /smart/test_repo.git/git-upload-pack HTTP/1.1 200
EOF
test_expect_success 'no empty path components' '
# In the URL, add a trailing slash, and see if git appends yet another
# slash.
cd "$ROOT_PATH" &&
git clone $HTTPD_URL/smart/test_repo.git/ test_repo_clone &&
sed -e "
s/^.* \"//
s/\"//
s/ [1-9][0-9]*\$//
s/^GET /GET /
" >act <"$HTTPD_ROOT_PATH"/access.log &&
# Clear the log, so that it does not affect the "used receive-pack
# service" test which reads the log too.
#
# We do this before the actual comparison to ensure the log is cleared.
echo > "$HTTPD_ROOT_PATH"/access.log &&
test_cmp exp act
'
test_expect_success 'clone remote repository' '
rm -rf test_repo_clone &&
git clone $HTTPD_URL/smart/test_repo.git test_repo_clone
'
test_expect_success 'push to remote repository (standard)' '
cd "$ROOT_PATH"/test_repo_clone &&
: >path2 &&
git add path2 &&
test_tick &&
git commit -m path2 &&
HEAD=$(git rev-parse --verify HEAD) &&
GIT_CURL_VERBOSE=1 git push -v -v 2>err &&
! grep "Expect: 100-continue" err &&
grep "POST git-receive-pack ([0-9]* bytes)" err &&
(cd "$HTTPD_DOCUMENT_ROOT_PATH"/test_repo.git &&
test $HEAD = $(git rev-parse --verify HEAD))
'
test_expect_success 'push already up-to-date' '
git push
'
test_expect_success 'create and delete remote branch' '
cd "$ROOT_PATH"/test_repo_clone &&
git checkout -b dev &&
: >path3 &&
git add path3 &&
test_tick &&
git commit -m dev &&
git push origin dev &&
git push origin :dev &&
test_must_fail git show-ref --verify refs/remotes/origin/dev
'
cat >exp <<EOF
GET /smart/test_repo.git/info/refs?service=git-upload-pack HTTP/1.1 200
POST /smart/test_repo.git/git-upload-pack HTTP/1.1 200
GET /smart/test_repo.git/info/refs?service=git-receive-pack HTTP/1.1 200
POST /smart/test_repo.git/git-receive-pack HTTP/1.1 200
GET /smart/test_repo.git/info/refs?service=git-receive-pack HTTP/1.1 200
GET /smart/test_repo.git/info/refs?service=git-receive-pack HTTP/1.1 200
POST /smart/test_repo.git/git-receive-pack HTTP/1.1 200
GET /smart/test_repo.git/info/refs?service=git-receive-pack HTTP/1.1 200
POST /smart/test_repo.git/git-receive-pack HTTP/1.1 200
EOF
test_expect_success 'used receive-pack service' '
sed -e "
s/^.* \"//
s/\"//
s/ [1-9][0-9]*\$//
s/^GET /GET /
" >act <"$HTTPD_ROOT_PATH"/access.log &&
test_cmp exp act
'
test_http_push_nonff "$HTTPD_DOCUMENT_ROOT_PATH"/test_repo.git \
"$ROOT_PATH"/test_repo_clone master
test_expect_success 'push fails for non-fast-forward refs unmatched by remote helper' '
# create a dissimilarly-named remote ref so that git is unable to match the
# two refs (viz. local, remote) unless an explicit refspec is provided.
git push origin master:retsam
echo "change changed" > path2 &&
git commit -a -m path2 --amend &&
# push master too; this ensures there is at least one '"'push'"' command to
# the remote helper and triggers interaction with the helper.
test_must_fail git push -v origin +master master:retsam >output 2>&1'
test_expect_success 'push fails for non-fast-forward refs unmatched by remote helper: remote output' '
grep "^ + [a-f0-9]*\.\.\.[a-f0-9]* *master -> master (forced update)$" output &&
grep "^ ! \[rejected\] *master -> retsam (non-fast-forward)$" output
'
test_expect_success 'push fails for non-fast-forward refs unmatched by remote helper: our output' '
test_i18ngrep "To prevent you from losing history, non-fast-forward updates were rejected" \
output
'
test_expect_success 'push (chunked)' '
git checkout master &&
test_commit commit path3 &&
HEAD=$(git rev-parse --verify HEAD) &&
git config http.postbuffer 4 &&
test_when_finished "git config --unset http.postbuffer" &&
git push -v -v origin $BRANCH 2>err &&
grep "POST git-receive-pack (chunked)" err &&
(cd "$HTTPD_DOCUMENT_ROOT_PATH"/test_repo.git &&
test $HEAD = $(git rev-parse --verify HEAD))
'
test_expect_success 'push --all can push to empty repo' '
d=$HTTPD_DOCUMENT_ROOT_PATH/empty-all.git &&
git init --bare "$d" &&
git --git-dir="$d" config http.receivepack true &&
git push --all "$HTTPD_URL"/smart/empty-all.git
'
test_expect_success 'push --mirror can push to empty repo' '
d=$HTTPD_DOCUMENT_ROOT_PATH/empty-mirror.git &&
git init --bare "$d" &&
git --git-dir="$d" config http.receivepack true &&
git push --mirror "$HTTPD_URL"/smart/empty-mirror.git
'
test_expect_success 'push --all to repo with alternates' '
s=$HTTPD_DOCUMENT_ROOT_PATH/test_repo.git &&
d=$HTTPD_DOCUMENT_ROOT_PATH/alternates-all.git &&
git clone --bare --shared "$s" "$d" &&
git --git-dir="$d" config http.receivepack true &&
git --git-dir="$d" repack -adl &&
git push --all "$HTTPD_URL"/smart/alternates-all.git
'
test_expect_success 'push --mirror to repo with alternates' '
s=$HTTPD_DOCUMENT_ROOT_PATH/test_repo.git &&
d=$HTTPD_DOCUMENT_ROOT_PATH/alternates-mirror.git &&
git clone --bare --shared "$s" "$d" &&
git --git-dir="$d" config http.receivepack true &&
git --git-dir="$d" repack -adl &&
git push --mirror "$HTTPD_URL"/smart/alternates-mirror.git
'
stop_httpd
test_done