git-commit-vandalism/t/t5551-http-fetch-smart.sh
Johannes Schindelin 8cb01e2fd3 http: support sending custom HTTP headers
We introduce a way to send custom HTTP headers with all requests.

This allows us, for example, to send an extra token from build agents
for temporary access to private repositories. (This is the use case that
triggered this patch.)

This feature can be used like this:

	git -c http.extraheader='Secret: sssh!' fetch $URL $REF

Note that `curl_easy_setopt(..., CURLOPT_HTTPHEADER, ...)` takes only
a single list, overriding any previous call. This means we have to
collect _all_ of the headers we want to use into a single list, and
feed it to cURL in one shot. Since we already unconditionally set a
"pragma" header when initializing the curl handles, we can add our new
headers to that list.

For callers which override the default header list (like probe_rpc),
we provide `http_copy_default_headers()` so they can do the same
trick.

Big thanks to Jeff King and Junio Hamano for their outstanding help and
patient reviews.

Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
Reviewed-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2016-04-27 14:02:33 -07:00

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Executable File

#!/bin/sh
test_description='test smart fetching over http via http-backend'
. ./test-lib.sh
. "$TEST_DIRECTORY"/lib-httpd.sh
start_httpd
test_expect_success 'setup repository' '
git config push.default matching &&
echo content >file &&
git add file &&
git commit -m one
'
test_expect_success 'create http-accessible bare repository' '
mkdir "$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: */*
> Accept-Encoding: gzip
> 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: 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 'redirects re-root further requests' '
git clone $HTTPD_URL/smart-redir-limited/repo.git repo-redir-limited
'
test_expect_success 'clone from password-protected repository' '
echo two >expect &&
set_askpass user@host pass@host &&
git clone --bare "$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 "$HTTPD_URL/auth-push/smart/repo.git" smart-noauth &&
expect_askpass none &&
git --git-dir=smart-noauth log -1 --format=%s >actual &&
test_cmp expect actual
'
test_expect_success 'clone from auth-only-for-objects repository' '
echo two >expect &&
set_askpass user@host pass@host &&
git clone --bare "$HTTPD_URL/auth-fetch/smart/repo.git" half-auth &&
expect_askpass both user@host &&
git --git-dir=half-auth log -1 --format=%s >actual &&
test_cmp expect actual
'
test_expect_success 'no-op half-auth fetch does not require a password' '
set_askpass wrong &&
git --git-dir=half-auth fetch &&
expect_askpass none
'
test_expect_success 'redirects send auth to new location' '
set_askpass user@host pass@host &&
git -c credential.useHttpPath=true \
clone $HTTPD_URL/smart-redir-auth/repo.git repo-redir-auth &&
expect_askpass both user@host auth/smart/repo.git
'
test_expect_success 'disable dumb http on server' '
git --git-dir="$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_expect_success 'invalid Content-Type rejected' '
test_must_fail git clone $HTTPD_URL/broken_smart/repo.git 2>actual &&
grep "not valid:" actual
'
test_expect_success 'create namespaced refs' '
test_commit namespaced &&
git push public HEAD:refs/namespaces/ns/refs/heads/master &&
git --git-dir="$HTTPD_DOCUMENT_ROOT_PATH/repo.git" \
symbolic-ref refs/namespaces/ns/HEAD refs/namespaces/ns/refs/heads/master
'
test_expect_success 'smart clone respects namespace' '
git clone "$HTTPD_URL/smart_namespace/repo.git" ns-smart &&
echo namespaced >expect &&
git --git-dir=ns-smart/.git log -1 --format=%s >actual &&
test_cmp expect actual
'
test_expect_success 'dumb clone via http-backend respects namespace' '
git --git-dir="$HTTPD_DOCUMENT_ROOT_PATH/repo.git" \
config http.getanyfile true &&
GIT_SMART_HTTP=0 git clone \
"$HTTPD_URL/smart_namespace/repo.git" ns-dumb &&
echo namespaced >expect &&
git --git-dir=ns-dumb/.git log -1 --format=%s >actual &&
test_cmp expect actual
'
cat >cookies.txt <<EOF
127.0.0.1 FALSE /smart_cookies/ FALSE 0 othername othervalue
EOF
cat >expect_cookies.txt <<EOF
127.0.0.1 FALSE /smart_cookies/ FALSE 0 othername othervalue
127.0.0.1 FALSE /smart_cookies/repo.git/info/ FALSE 0 name value
EOF
test_expect_success 'cookies stored in http.cookiefile when http.savecookies set' '
git config http.cookiefile cookies.txt &&
git config http.savecookies true &&
git ls-remote $HTTPD_URL/smart_cookies/repo.git master &&
tail -3 cookies.txt >cookies_tail.txt &&
test_cmp expect_cookies.txt cookies_tail.txt
'
test_expect_success 'transfer.hiderefs works over smart-http' '
test_commit hidden &&
test_commit visible &&
git push public HEAD^:refs/heads/a HEAD:refs/heads/b &&
git --git-dir="$HTTPD_DOCUMENT_ROOT_PATH/repo.git" \
config transfer.hiderefs refs/heads/a &&
git clone --bare "$HTTPD_URL/smart/repo.git" hidden.git &&
test_must_fail git -C hidden.git rev-parse --verify a &&
git -C hidden.git rev-parse --verify b
'
# create an arbitrary number of tags, numbered from tag-$1 to tag-$2
create_tags () {
rm -f marks &&
for i in $(test_seq "$1" "$2")
do
# don't use here-doc, because it requires a process
# per loop iteration
echo "commit refs/heads/too-many-refs-$1" &&
echo "mark :$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-$1" &&
echo "from :$1"
done | git fast-import --export-marks=marks &&
# now assign tags to all the dangling commits we created above
tag=$(perl -e "print \"bla\" x 30") &&
sed -e "s|^:\([^ ]*\) \(.*\)$|\2 refs/tags/$tag-\1|" <marks >>packed-refs
}
test_expect_success 'create 2,000 tags in the repo' '
(
cd "$HTTPD_DOCUMENT_ROOT_PATH/repo.git" &&
create_tags 1 2000
)
'
test_expect_success CMDLINE_LIMIT \
'clone the 2,000 tag repo to check OS command line overflow' '
run_with_limited_cmdline git clone $HTTPD_URL/smart/repo.git too-many-refs &&
(
cd too-many-refs &&
git for-each-ref refs/tags >actual &&
test_line_count = 2000 actual
)
'
test_expect_success 'large fetch-pack requests can be split across POSTs' '
GIT_CURL_VERBOSE=1 git -c http.postbuffer=65536 \
clone --bare "$HTTPD_URL/smart/repo.git" split.git 2>err &&
grep "^> POST" err >posts &&
test_line_count = 2 posts
'
test_expect_success EXPENSIVE 'http can handle enormous ref negotiation' '
(
cd "$HTTPD_DOCUMENT_ROOT_PATH/repo.git" &&
create_tags 2001 50000
) &&
git -C too-many-refs fetch -q --tags &&
(
cd "$HTTPD_DOCUMENT_ROOT_PATH/repo.git" &&
create_tags 50001 100000
) &&
git -C too-many-refs fetch -q --tags &&
git -C too-many-refs for-each-ref refs/tags >tags &&
test_line_count = 100000 tags
'
test_expect_success 'custom http headers' '
test_must_fail git fetch "$HTTPD_URL/smart_headers/repo.git" &&
git -c http.extraheader="x-magic-one: abra" \
-c http.extraheader="x-magic-two: cadabra" \
fetch "$HTTPD_URL/smart_headers/repo.git"
'
stop_httpd
test_done