git/t/t5703-upload-pack-ref-in-want.sh
Kim Altintop 3955140653 upload-pack.c: treat want-ref relative to namespace
When 'upload-pack' runs within the context of a git namespace, treat any
'want-ref' lines the client sends as relative to that namespace.

Also check if the wanted ref is hidden via 'hideRefs'. If it is hidden,
respond with an error as if the ref didn't exist.

Helped-by: Jonathan Tan <jonathantanmy@google.com>
Signed-off-by: Kim Altintop <kim@eagain.st>
Reviewed-by: Jonathan Tan <jonathantanmy@google.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2021-09-01 07:54:18 -07:00

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#!/bin/sh
test_description='upload-pack ref-in-want'
GIT_TEST_DEFAULT_INITIAL_BRANCH_NAME=main
export GIT_TEST_DEFAULT_INITIAL_BRANCH_NAME
. ./test-lib.sh
get_actual_refs () {
sed -n -e '/wanted-refs/,/0001/{
/wanted-refs/d
/0001/d
p
}' <out | test-tool pkt-line unpack >actual_refs
}
get_actual_commits () {
test-tool pkt-line unpack-sideband <out >o.pack &&
git index-pack o.pack &&
git verify-pack -v o.idx >objs &&
sed -n -e 's/\([0-9a-f][0-9a-f]*\) commit .*/\1/p' objs >objs.sed &&
sort >actual_commits <objs.sed
}
check_output () {
get_actual_refs &&
test_cmp expected_refs actual_refs &&
get_actual_commits &&
sort expected_commits >sorted_commits &&
test_cmp sorted_commits actual_commits
}
write_command () {
echo "command=$1"
if test "$(test_oid algo)" != sha1
then
echo "object-format=$(test_oid algo)"
fi
}
# Write a complete fetch command to stdout, suitable for use with `test-tool
# pkt-line`. "want-ref", "want", and "have" lines are read from stdin.
#
# Examples:
#
# write_fetch_command <<-EOF
# want-ref refs/heads/main
# have $(git rev-parse a)
# EOF
#
# write_fetch_command <<-EOF
# want $(git rev-parse b)
# have $(git rev-parse a)
# EOF
#
write_fetch_command () {
write_command fetch &&
echo "0001" &&
echo "no-progress" &&
cat &&
echo "done" &&
echo "0000"
}
# c(o/foo) d(o/bar)
# \ /
# b e(baz) f(main)
# \__ | __/
# \ | /
# a
test_expect_success 'setup repository' '
test_commit a &&
git branch -M main &&
git checkout -b o/foo &&
test_commit b &&
test_commit c &&
git checkout -b o/bar b &&
test_commit d &&
git checkout -b baz a &&
test_commit e &&
git checkout main &&
test_commit f
'
test_expect_success 'config controls ref-in-want advertisement' '
test-tool serve-v2 --advertise-capabilities >out &&
perl -ne "/ref-in-want/ and print" out >out.filter &&
test_must_be_empty out.filter &&
git config uploadpack.allowRefInWant false &&
test-tool serve-v2 --advertise-capabilities >out &&
perl -ne "/ref-in-want/ and print" out >out.filter &&
test_must_be_empty out.filter &&
git config uploadpack.allowRefInWant true &&
test-tool serve-v2 --advertise-capabilities >out &&
perl -ne "/ref-in-want/ and print" out >out.filter &&
test_file_not_empty out.filter
'
test_expect_success 'invalid want-ref line' '
write_fetch_command >pkt <<-EOF &&
want-ref refs/heads/non-existent
EOF
test-tool pkt-line pack <pkt >in &&
test_must_fail test-tool serve-v2 --stateless-rpc 2>out <in &&
grep "unknown ref" out
'
test_expect_success 'basic want-ref' '
oid=$(git rev-parse f) &&
cat >expected_refs <<-EOF &&
$oid refs/heads/main
EOF
git rev-parse f >expected_commits &&
write_fetch_command >pkt <<-EOF &&
want-ref refs/heads/main
have $(git rev-parse a)
EOF
test-tool pkt-line pack <pkt >in &&
test-tool serve-v2 --stateless-rpc >out <in &&
check_output
'
test_expect_success 'multiple want-ref lines' '
oid_c=$(git rev-parse c) &&
oid_d=$(git rev-parse d) &&
cat >expected_refs <<-EOF &&
$oid_c refs/heads/o/foo
$oid_d refs/heads/o/bar
EOF
git rev-parse c d >expected_commits &&
write_fetch_command >pkt <<-EOF &&
want-ref refs/heads/o/foo
want-ref refs/heads/o/bar
have $(git rev-parse b)
EOF
test-tool pkt-line pack <pkt >in &&
test-tool serve-v2 --stateless-rpc >out <in &&
check_output
'
test_expect_success 'mix want and want-ref' '
oid=$(git rev-parse f) &&
cat >expected_refs <<-EOF &&
$oid refs/heads/main
EOF
git rev-parse e f >expected_commits &&
write_fetch_command >pkt <<-EOF &&
want-ref refs/heads/main
want $(git rev-parse e)
have $(git rev-parse a)
EOF
test-tool pkt-line pack <pkt >in &&
test-tool serve-v2 --stateless-rpc >out <in &&
check_output
'
test_expect_success 'want-ref with ref we already have commit for' '
oid=$(git rev-parse c) &&
cat >expected_refs <<-EOF &&
$oid refs/heads/o/foo
EOF
>expected_commits &&
write_fetch_command >pkt <<-EOF &&
want-ref refs/heads/o/foo
have $(git rev-parse c)
EOF
test-tool pkt-line pack <pkt >in &&
test-tool serve-v2 --stateless-rpc >out <in &&
check_output
'
REPO="$(pwd)/repo"
LOCAL_PRISTINE="$(pwd)/local_pristine"
# $REPO
# c(o/foo) d(o/bar)
# \ /
# b e(baz) f(main)
# \__ | __/
# \ | /
# a
#
# $LOCAL_PRISTINE
# s32(side)
# |
# .
# .
# |
# a(main)
test_expect_success 'setup repos for fetching with ref-in-want tests' '
(
git init -b main "$REPO" &&
cd "$REPO" &&
test_commit a &&
# Local repo with many commits (so that negotiation will take
# more than 1 request/response pair)
rm -rf "$LOCAL_PRISTINE" &&
git clone "file://$REPO" "$LOCAL_PRISTINE" &&
cd "$LOCAL_PRISTINE" &&
git checkout -b side &&
test_commit_bulk --id=s 33 &&
# Add novel commits to upstream
git checkout main &&
cd "$REPO" &&
git checkout -b o/foo &&
test_commit b &&
test_commit c &&
git checkout -b o/bar b &&
test_commit d &&
git checkout -b baz a &&
test_commit e &&
git checkout main &&
test_commit f
) &&
git -C "$REPO" config uploadpack.allowRefInWant true &&
git -C "$LOCAL_PRISTINE" config protocol.version 2
'
test_expect_success 'fetching with exact OID' '
test_when_finished "rm -f log" &&
rm -rf local &&
cp -r "$LOCAL_PRISTINE" local &&
oid=$(git -C "$REPO" rev-parse d) &&
GIT_TRACE_PACKET="$(pwd)/log" git -C local fetch origin \
"$oid":refs/heads/actual &&
git -C "$REPO" rev-parse "d" >expected &&
git -C local rev-parse refs/heads/actual >actual &&
test_cmp expected actual &&
grep "want $oid" log
'
test_expect_success 'fetching multiple refs' '
test_when_finished "rm -f log" &&
rm -rf local &&
cp -r "$LOCAL_PRISTINE" local &&
GIT_TRACE_PACKET="$(pwd)/log" git -C local fetch origin main baz &&
git -C "$REPO" rev-parse "main" "baz" >expected &&
git -C local rev-parse refs/remotes/origin/main refs/remotes/origin/baz >actual &&
test_cmp expected actual &&
grep "want-ref refs/heads/main" log &&
grep "want-ref refs/heads/baz" log
'
test_expect_success 'fetching ref and exact OID' '
test_when_finished "rm -f log" &&
rm -rf local &&
cp -r "$LOCAL_PRISTINE" local &&
oid=$(git -C "$REPO" rev-parse b) &&
GIT_TRACE_PACKET="$(pwd)/log" git -C local fetch origin \
main "$oid":refs/heads/actual &&
git -C "$REPO" rev-parse "main" "b" >expected &&
git -C local rev-parse refs/remotes/origin/main refs/heads/actual >actual &&
test_cmp expected actual &&
grep "want $oid" log &&
grep "want-ref refs/heads/main" log
'
test_expect_success 'fetching with wildcard that does not match any refs' '
test_when_finished "rm -f log" &&
rm -rf local &&
cp -r "$LOCAL_PRISTINE" local &&
git -C local fetch origin refs/heads/none*:refs/heads/* >out &&
test_must_be_empty out
'
test_expect_success 'fetching with wildcard that matches multiple refs' '
test_when_finished "rm -f log" &&
rm -rf local &&
cp -r "$LOCAL_PRISTINE" local &&
GIT_TRACE_PACKET="$(pwd)/log" git -C local fetch origin refs/heads/o*:refs/heads/o* &&
git -C "$REPO" rev-parse "o/foo" "o/bar" >expected &&
git -C local rev-parse "o/foo" "o/bar" >actual &&
test_cmp expected actual &&
grep "want-ref refs/heads/o/foo" log &&
grep "want-ref refs/heads/o/bar" log
'
REPO="$(pwd)/repo-ns"
test_expect_success 'setup namespaced repo' '
(
git init -b main "$REPO" &&
cd "$REPO" &&
test_commit a &&
test_commit b &&
git checkout a &&
test_commit c &&
git checkout a &&
test_commit d &&
git update-ref refs/heads/ns-no b &&
git update-ref refs/namespaces/ns/refs/heads/ns-yes c &&
git update-ref refs/namespaces/ns/refs/heads/hidden d
) &&
git -C "$REPO" config uploadpack.allowRefInWant true
'
test_expect_success 'with namespace: want-ref is considered relative to namespace' '
wanted_ref=refs/heads/ns-yes &&
oid=$(git -C "$REPO" rev-parse "refs/namespaces/ns/$wanted_ref") &&
cat >expected_refs <<-EOF &&
$oid $wanted_ref
EOF
cat >expected_commits <<-EOF &&
$oid
$(git -C "$REPO" rev-parse a)
EOF
write_fetch_command >pkt <<-EOF &&
want-ref $wanted_ref
EOF
test-tool pkt-line pack <pkt >in &&
GIT_NAMESPACE=ns test-tool -C "$REPO" serve-v2 --stateless-rpc >out <in &&
check_output
'
test_expect_success 'with namespace: want-ref outside namespace is unknown' '
wanted_ref=refs/heads/ns-no &&
write_fetch_command >pkt <<-EOF &&
want-ref $wanted_ref
EOF
test-tool pkt-line pack <pkt >in &&
test_must_fail env GIT_NAMESPACE=ns \
test-tool -C "$REPO" serve-v2 --stateless-rpc >out <in &&
grep "unknown ref" out
'
# Cross-check refs/heads/ns-no indeed exists
test_expect_success 'without namespace: want-ref outside namespace succeeds' '
wanted_ref=refs/heads/ns-no &&
oid=$(git -C "$REPO" rev-parse $wanted_ref) &&
cat >expected_refs <<-EOF &&
$oid $wanted_ref
EOF
cat >expected_commits <<-EOF &&
$oid
$(git -C "$REPO" rev-parse a)
EOF
write_fetch_command >pkt <<-EOF &&
want-ref $wanted_ref
EOF
test-tool pkt-line pack <pkt >in &&
test-tool -C "$REPO" serve-v2 --stateless-rpc >out <in &&
check_output
'
test_expect_success 'with namespace: hideRefs is matched, relative to namespace' '
wanted_ref=refs/heads/hidden &&
git -C "$REPO" config transfer.hideRefs $wanted_ref &&
write_fetch_command >pkt <<-EOF &&
want-ref $wanted_ref
EOF
test-tool pkt-line pack <pkt >in &&
test_must_fail env GIT_NAMESPACE=ns \
test-tool -C "$REPO" serve-v2 --stateless-rpc >out <in &&
grep "unknown ref" out
'
# Cross-check refs/heads/hidden indeed exists
test_expect_success 'with namespace: want-ref succeeds if hideRefs is removed' '
wanted_ref=refs/heads/hidden &&
git -C "$REPO" config --unset transfer.hideRefs $wanted_ref &&
oid=$(git -C "$REPO" rev-parse "refs/namespaces/ns/$wanted_ref") &&
cat >expected_refs <<-EOF &&
$oid $wanted_ref
EOF
cat >expected_commits <<-EOF &&
$oid
$(git -C "$REPO" rev-parse a)
EOF
write_fetch_command >pkt <<-EOF &&
want-ref $wanted_ref
EOF
test-tool pkt-line pack <pkt >in &&
GIT_NAMESPACE=ns test-tool -C "$REPO" serve-v2 --stateless-rpc >out <in &&
check_output
'
test_expect_success 'without namespace: relative hideRefs does not match' '
wanted_ref=refs/namespaces/ns/refs/heads/hidden &&
git -C "$REPO" config transfer.hideRefs refs/heads/hidden &&
oid=$(git -C "$REPO" rev-parse $wanted_ref) &&
cat >expected_refs <<-EOF &&
$oid $wanted_ref
EOF
cat >expected_commits <<-EOF &&
$oid
$(git -C "$REPO" rev-parse a)
EOF
write_fetch_command >pkt <<-EOF &&
want-ref $wanted_ref
EOF
test-tool pkt-line pack <pkt >in &&
test-tool -C "$REPO" serve-v2 --stateless-rpc >out <in &&
check_output
'
. "$TEST_DIRECTORY"/lib-httpd.sh
start_httpd
REPO="$HTTPD_DOCUMENT_ROOT_PATH/repo"
LOCAL_PRISTINE="$(pwd)/local_pristine"
test_expect_success 'setup repos for change-while-negotiating test' '
(
git init -b main "$REPO" &&
cd "$REPO" &&
>.git/git-daemon-export-ok &&
test_commit m1 &&
git tag -d m1 &&
# Local repo with many commits (so that negotiation will take
# more than 1 request/response pair)
rm -rf "$LOCAL_PRISTINE" &&
git clone "http://127.0.0.1:$LIB_HTTPD_PORT/smart/repo" "$LOCAL_PRISTINE" &&
cd "$LOCAL_PRISTINE" &&
git checkout -b side &&
test_commit_bulk --id=s 33 &&
# Add novel commits to upstream
git checkout main &&
cd "$REPO" &&
test_commit m2 &&
test_commit m3 &&
git tag -d m2 m3
) &&
git -C "$LOCAL_PRISTINE" remote set-url origin "http://127.0.0.1:$LIB_HTTPD_PORT/one_time_perl/repo" &&
git -C "$LOCAL_PRISTINE" config protocol.version 2
'
inconsistency () {
# Simulate that the server initially reports $2 as the ref
# corresponding to $1, and after that, $1 as the ref corresponding to
# $1. This corresponds to the real-life situation where the server's
# repository appears to change during negotiation, for example, when
# different servers in a load-balancing arrangement serve (stateless)
# RPCs during a single negotiation.
oid1=$(git -C "$REPO" rev-parse $1) &&
oid2=$(git -C "$REPO" rev-parse $2) &&
echo "s/$oid1/$oid2/" >"$HTTPD_ROOT_PATH/one-time-perl"
}
test_expect_success 'server is initially ahead - no ref in want' '
git -C "$REPO" config uploadpack.allowRefInWant false &&
rm -rf local &&
cp -r "$LOCAL_PRISTINE" local &&
inconsistency main $(test_oid numeric) &&
test_must_fail git -C local fetch 2>err &&
test_i18ngrep "fatal: remote error: upload-pack: not our ref" err
'
test_expect_success 'server is initially ahead - ref in want' '
git -C "$REPO" config uploadpack.allowRefInWant true &&
rm -rf local &&
cp -r "$LOCAL_PRISTINE" local &&
inconsistency main $(test_oid numeric) &&
git -C local fetch &&
git -C "$REPO" rev-parse --verify main >expected &&
git -C local rev-parse --verify refs/remotes/origin/main >actual &&
test_cmp expected actual
'
test_expect_success 'server is initially behind - no ref in want' '
git -C "$REPO" config uploadpack.allowRefInWant false &&
rm -rf local &&
cp -r "$LOCAL_PRISTINE" local &&
inconsistency main "main^" &&
git -C local fetch &&
git -C "$REPO" rev-parse --verify "main^" >expected &&
git -C local rev-parse --verify refs/remotes/origin/main >actual &&
test_cmp expected actual
'
test_expect_success 'server is initially behind - ref in want' '
git -C "$REPO" config uploadpack.allowRefInWant true &&
rm -rf local &&
cp -r "$LOCAL_PRISTINE" local &&
inconsistency main "main^" &&
git -C local fetch &&
git -C "$REPO" rev-parse --verify "main" >expected &&
git -C local rev-parse --verify refs/remotes/origin/main >actual &&
test_cmp expected actual
'
test_expect_success 'server loses a ref - ref in want' '
git -C "$REPO" config uploadpack.allowRefInWant true &&
rm -rf local &&
cp -r "$LOCAL_PRISTINE" local &&
echo "s/main/rain/" >"$HTTPD_ROOT_PATH/one-time-perl" &&
test_must_fail git -C local fetch 2>err &&
test_i18ngrep "fatal: remote error: unknown ref refs/heads/rain" err
'
# DO NOT add non-httpd-specific tests here, because the last part of this
# test script is only executed when httpd is available and enabled.
test_done