git/t/t5551-http-fetch.sh
Jeff King 02572c2e3a remote-curl: let users turn off smart http
Usually there is no need for users to specify whether an
http remote is smart or dumb; the protocol is designed so
that a single initial request is made, and the client can
determine the server's capability from the response.

However, some misconfigured dumb-only servers may not like
the initial request by a smart client, as it contains a
query string. Until recently, commit 703e6e7 worked around
this by making a second request. However, that commit was
recently reverted due to its side effect of masking the
initial request's error code.

Since git has had that workaround for several years, we
don't know exactly how many such misconfigured servers are
out there. The reversion of 703e6e7 assumes they are rare
enough not to worry about. Still, that reversion leaves
somebody who does run into such a server with no escape
hatch at all. Let's give them an environment variable they
can tweak to perform the "dumb" request.

This is intentionally not a documented interface. It's
overly simple and is really there for debugging in case
somebody does complain about git not working with their
server. A real user-facing interface would entail a
per-remote or per-URL config variable.

Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2012-09-21 10:33:11 -07:00

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#!/bin/sh
test_description='test smart fetching over http via http-backend'
. ./test-lib.sh
if test -n "$NO_CURL"; then
skip_all='skipping test, git built without http support'
test_done
fi
LIB_HTTPD_PORT=${LIB_HTTPD_PORT-'5551'}
. "$TEST_DIRECTORY"/lib-httpd.sh
start_httpd
test_expect_success 'setup repository' '
echo content >file &&
git add file &&
git commit -m one
'
test_expect_success 'create http-accessible bare repository' '
mkdir "$HTTPD_DOCUMENT_ROOT_PATH/repo.git" &&
(cd "$HTTPD_DOCUMENT_ROOT_PATH/repo.git" &&
git --bare init
) &&
git remote add public "$HTTPD_DOCUMENT_ROOT_PATH/repo.git" &&
git push public master:master
'
setup_askpass_helper
cat >exp <<EOF
> GET /smart/repo.git/info/refs?service=git-upload-pack HTTP/1.1
> Accept: */*
> Pragma: no-cache
< HTTP/1.1 200 OK
< Pragma: no-cache
< Cache-Control: no-cache, max-age=0, must-revalidate
< Content-Type: application/x-git-upload-pack-advertisement
> POST /smart/repo.git/git-upload-pack HTTP/1.1
> Accept-Encoding: deflate, gzip
> Content-Type: application/x-git-upload-pack-request
> Accept: application/x-git-upload-pack-result
> Content-Length: xxx
< HTTP/1.1 200 OK
< Pragma: no-cache
< Cache-Control: no-cache, max-age=0, must-revalidate
< Content-Type: application/x-git-upload-pack-result
EOF
test_expect_success 'clone http repository' '
GIT_CURL_VERBOSE=1 git clone --quiet $HTTPD_URL/smart/repo.git clone 2>err &&
test_cmp file clone/file &&
tr '\''\015'\'' Q <err |
sed -e "
s/Q\$//
/^[*] /d
/^$/d
/^< $/d
/^[^><]/{
s/^/> /
}
/^> User-Agent: /d
/^> Host: /d
/^> POST /,$ {
/^> Accept: [*]\\/[*]/d
}
s/^> Content-Length: .*/> Content-Length: xxx/
/^> 00..want /d
/^> 00.*done/d
/^< Server: /d
/^< Expires: /d
/^< Date: /d
/^< Content-Length: /d
/^< Transfer-Encoding: /d
" >act &&
test_cmp exp act
'
test_expect_success 'fetch changes via http' '
echo content >>file &&
git commit -a -m two &&
git push public
(cd clone && git pull) &&
test_cmp file clone/file
'
cat >exp <<EOF
GET /smart/repo.git/info/refs?service=git-upload-pack HTTP/1.1 200
POST /smart/repo.git/git-upload-pack HTTP/1.1 200
GET /smart/repo.git/info/refs?service=git-upload-pack HTTP/1.1 200
POST /smart/repo.git/git-upload-pack HTTP/1.1 200
EOF
test_expect_success 'used upload-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_expect_success 'follow redirects (301)' '
git clone $HTTPD_URL/smart-redir-perm/repo.git --quiet repo-p
'
test_expect_success 'follow redirects (302)' '
git clone $HTTPD_URL/smart-redir-temp/repo.git --quiet repo-t
'
test_expect_success 'clone from password-protected repository' '
echo two >expect &&
set_askpass user@host &&
git clone --bare "$HTTPD_URL/auth/smart/repo.git" smart-auth &&
expect_askpass both user@host &&
git --git-dir=smart-auth log -1 --format=%s >actual &&
test_cmp expect actual
'
test_expect_success 'clone from auth-only-for-push repository' '
echo two >expect &&
set_askpass wrong &&
git clone --bare "$HTTPD_URL/auth-push/smart/repo.git" smart-noauth &&
expect_askpass none &&
git --git-dir=smart-noauth log -1 --format=%s >actual &&
test_cmp expect actual
'
test_expect_success 'disable dumb http on server' '
git --git-dir="$HTTPD_DOCUMENT_ROOT_PATH/repo.git" \
config http.getanyfile false
'
test_expect_success 'GIT_SMART_HTTP can disable smart http' '
(GIT_SMART_HTTP=0 &&
export GIT_SMART_HTTP &&
cd clone &&
test_must_fail git fetch)
'
test -n "$GIT_TEST_LONG" && test_set_prereq EXPENSIVE
test_expect_success EXPENSIVE 'create 50,000 tags in the repo' '
(
cd "$HTTPD_DOCUMENT_ROOT_PATH/repo.git" &&
for i in `test_seq 50000`
do
echo "commit refs/heads/too-many-refs"
echo "mark :$i"
echo "committer git <git@example.com> $i +0000"
echo "data 0"
echo "M 644 inline bla.txt"
echo "data 4"
echo "bla"
# make every commit dangling by always
# rewinding the branch after each commit
echo "reset refs/heads/too-many-refs"
echo "from :1"
done | git fast-import --export-marks=marks &&
# now assign tags to all the dangling commits we created above
tag=$("$PERL_PATH" -e "print \"bla\" x 30") &&
sed -e "s/^:\(.\+\) \(.\+\)$/\2 refs\/tags\/$tag-\1/" <marks >>packed-refs
)
'
test_expect_success EXPENSIVE 'clone the 50,000 tag repo to check OS command line overflow' '
git clone $HTTPD_URL/smart/repo.git too-many-refs 2>err &&
test_line_count = 0 err
'
stop_httpd
test_done