[thirdparty/git.git] / t / t5703-upload-pack-ref-in-want.sh

#!/bin/sh

test_description='upload-pack ref-in-want'

. ./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
Commit	Line	Data
516e2b76 BW	1	#!/bin/sh
	2
	3	test_description='upload-pack ref-in-want'
	4
	5	. ./test-lib.sh
	6
	7	get_actual_refs () {
	8	sed -n -e '/wanted-refs/,/0001/{
	9	/wanted-refs/d
	10	/0001/d
	11	p
8ea40cc5	12	}' <out \| test-tool pkt-line unpack >actual_refs
516e2b76 BW	13	}
	14
	15	get_actual_commits () {
84370e36	16	test-tool pkt-line unpack-sideband <out >o.pack &&
516e2b76	17	git index-pack o.pack &&
763b47ba	18	git verify-pack -v o.idx >objs &&
9aebc470 ÆAB	19	sed -n -e 's/\([0-9a-f][0-9a-f]\) commit ./\1/p' objs >objs.sed &&
9aebc470 ÆAB	20	sort >actual_commits <objs.sed
516e2b76 BW	21	}
	22
	23	check_output () {
	24	get_actual_refs &&
	25	test_cmp expected_refs actual_refs &&
	26	get_actual_commits &&
763b47ba DL	27	sort expected_commits >sorted_commits &&
763b47ba DL	28	test_cmp sorted_commits actual_commits
516e2b76 BW	29	}
516e2b76 BW	30
f7c6a3bf	31	write_command () {
	32	echo "command=$1"
	33
	34	if test "$(test_oid algo)" != sha1
	35	then
	36	echo "object-format=$(test_oid algo)"
	37	fi
	38	}
	39
bac01c64 KA	40	# Write a complete fetch command to stdout, suitable for use with `test-tool
	41	# pkt-line`. "want-ref", "want", and "have" lines are read from stdin.
	42	#
	43	# Examples:
	44	#
	45	# write_fetch_command <<-EOF
	46	# want-ref refs/heads/main
	47	# have $(git rev-parse a)
	48	# EOF
	49	#
	50	# write_fetch_command <<-EOF
	51	# want $(git rev-parse b)
	52	# have $(git rev-parse a)
	53	# EOF
	54	#
	55	write_fetch_command () {
	56	write_command fetch &&
	57	echo "0001" &&
	58	echo "no-progress" &&
	59	cat &&
	60	echo "done" &&
	61	echo "0000"
	62	}
	63
516e2b76 BW	64	# c(o/foo) d(o/bar)
516e2b76 BW	65	# \ /
72dc1728	66	# b e(baz) f(main)
516e2b76 BW	67	# \__ \| __/
	68	# \ \| /
	69	# a
	70	test_expect_success 'setup repository' '
	71	test_commit a &&
72dc1728	72	git branch -M main &&
516e2b76 BW	73	git checkout -b o/foo &&
	74	test_commit b &&
	75	test_commit c &&
	76	git checkout -b o/bar b &&
	77	test_commit d &&
	78	git checkout -b baz a &&
	79	test_commit e &&
72dc1728	80	git checkout main &&
516e2b76 BW	81	test_commit f
	82	'
	83
	84	test_expect_success 'config controls ref-in-want advertisement' '
b7ce24d0	85	test-tool serve-v2 --advertise-capabilities >out &&
1eb73712 ĐTCD	86	perl -ne "/ref-in-want/ and print" out >out.filter &&
1eb73712 ĐTCD	87	test_must_be_empty out.filter &&
516e2b76 BW	88
516e2b76 BW	89	git config uploadpack.allowRefInWant false &&
b7ce24d0	90	test-tool serve-v2 --advertise-capabilities >out &&
1eb73712 ĐTCD	91	perl -ne "/ref-in-want/ and print" out >out.filter &&
1eb73712 ĐTCD	92	test_must_be_empty out.filter &&
516e2b76 BW	93
516e2b76 BW	94	git config uploadpack.allowRefInWant true &&
b7ce24d0	95	test-tool serve-v2 --advertise-capabilities >out &&
1eb73712 ĐTCD	96	perl -ne "/ref-in-want/ and print" out >out.filter &&
1eb73712 ĐTCD	97	test_file_not_empty out.filter
516e2b76 BW	98	'
	99
	100	test_expect_success 'invalid want-ref line' '
bac01c64	101	write_fetch_command >pkt <<-EOF &&
516e2b76	102	want-ref refs/heads/non-existent
516e2b76 BW	103	EOF
516e2b76 BW	104
bac01c64	105	test-tool pkt-line pack <pkt >in &&
b7ce24d0	106	test_must_fail test-tool serve-v2 --stateless-rpc 2>out <in &&
516e2b76 BW	107	grep "unknown ref" out
	108	'
	109
	110	test_expect_success 'basic want-ref' '
763b47ba	111	oid=$(git rev-parse f) &&
516e2b76	112	cat >expected_refs <<-EOF &&
72dc1728	113	$oid refs/heads/main
516e2b76	114	EOF
763b47ba	115	git rev-parse f >expected_commits &&
516e2b76	116
bac01c64	117	write_fetch_command >pkt <<-EOF &&
72dc1728	118	want-ref refs/heads/main
bac01c64	119	have $(git rev-parse a)
516e2b76	120	EOF
bac01c64	121	test-tool pkt-line pack <pkt >in &&
516e2b76	122
b7ce24d0	123	test-tool serve-v2 --stateless-rpc >out <in &&
516e2b76 BW	124	check_output
	125	'
	126
	127	test_expect_success 'multiple want-ref lines' '
763b47ba DL	128	oid_c=$(git rev-parse c) &&
763b47ba DL	129	oid_d=$(git rev-parse d) &&
516e2b76	130	cat >expected_refs <<-EOF &&
763b47ba DL	131	$oid_c refs/heads/o/foo
763b47ba DL	132	$oid_d refs/heads/o/bar
516e2b76	133	EOF
763b47ba	134	git rev-parse c d >expected_commits &&
516e2b76	135
bac01c64	136	write_fetch_command >pkt <<-EOF &&
516e2b76 BW	137	want-ref refs/heads/o/foo
516e2b76 BW	138	want-ref refs/heads/o/bar
bac01c64	139	have $(git rev-parse b)
516e2b76	140	EOF
bac01c64	141	test-tool pkt-line pack <pkt >in &&
516e2b76	142
b7ce24d0	143	test-tool serve-v2 --stateless-rpc >out <in &&
516e2b76 BW	144	check_output
	145	'
	146
	147	test_expect_success 'mix want and want-ref' '
763b47ba	148	oid=$(git rev-parse f) &&
516e2b76	149	cat >expected_refs <<-EOF &&
72dc1728	150	$oid refs/heads/main
516e2b76	151	EOF
763b47ba	152	git rev-parse e f >expected_commits &&
516e2b76	153
bac01c64	154	write_fetch_command >pkt <<-EOF &&
72dc1728	155	want-ref refs/heads/main
516e2b76 BW	156	want $(git rev-parse e)
516e2b76 BW	157	have $(git rev-parse a)
516e2b76	158	EOF
bac01c64	159	test-tool pkt-line pack <pkt >in &&
516e2b76	160
b7ce24d0	161	test-tool serve-v2 --stateless-rpc >out <in &&
516e2b76 BW	162	check_output
	163	'
	164
	165	test_expect_success 'want-ref with ref we already have commit for' '
763b47ba	166	oid=$(git rev-parse c) &&
516e2b76	167	cat >expected_refs <<-EOF &&
763b47ba	168	$oid refs/heads/o/foo
516e2b76 BW	169	EOF
	170	>expected_commits &&
	171
bac01c64	172	write_fetch_command >pkt <<-EOF &&
516e2b76	173	want-ref refs/heads/o/foo
bac01c64	174	have $(git rev-parse c)
516e2b76	175	EOF
bac01c64	176	test-tool pkt-line pack <pkt >in &&
516e2b76	177
b7ce24d0	178	test-tool serve-v2 --stateless-rpc >out <in &&
516e2b76 BW	179	check_output
	180	'
	181
73302051 BW	182	REPO="$(pwd)/repo"
	183	LOCAL_PRISTINE="$(pwd)/local_pristine"
	184
	185	# $REPO
	186	# c(o/foo) d(o/bar)
	187	# \ /
72dc1728	188	# b e(baz) f(main)
73302051 BW	189	# \__ \| __/
	190	# \ \| /
	191	# a
	192	#
	193	# $LOCAL_PRISTINE
	194	# s32(side)
	195	# \|
	196	# .
	197	# .
	198	# \|
72dc1728	199	# a(main)
73302051 BW	200	test_expect_success 'setup repos for fetching with ref-in-want tests' '
73302051 BW	201	(
72dc1728	202	git init -b main "$REPO" &&
73302051 BW	203	cd "$REPO" &&
	204	test_commit a &&
	205
	206	# Local repo with many commits (so that negotiation will take
	207	# more than 1 request/response pair)
	208	rm -rf "$LOCAL_PRISTINE" &&
	209	git clone "file://$REPO" "$LOCAL_PRISTINE" &&
	210	cd "$LOCAL_PRISTINE" &&
	211	git checkout -b side &&
ac093d55	212	test_commit_bulk --id=s 33 &&
73302051 BW	213
73302051 BW	214	# Add novel commits to upstream
72dc1728	215	git checkout main &&
73302051 BW	216	cd "$REPO" &&
	217	git checkout -b o/foo &&
	218	test_commit b &&
	219	test_commit c &&
	220	git checkout -b o/bar b &&
	221	test_commit d &&
	222	git checkout -b baz a &&
	223	test_commit e &&
72dc1728	224	git checkout main &&
73302051 BW	225	test_commit f
	226	) &&
	227	git -C "$REPO" config uploadpack.allowRefInWant true &&
	228	git -C "$LOCAL_PRISTINE" config protocol.version 2
	229	'
	230
	231	test_expect_success 'fetching with exact OID' '
	232	test_when_finished "rm -f log" &&
	233
	234	rm -rf local &&
	235	cp -r "$LOCAL_PRISTINE" local &&
763b47ba	236	oid=$(git -C "$REPO" rev-parse d) &&
73302051	237	GIT_TRACE_PACKET="$(pwd)/log" git -C local fetch origin \
763b47ba	238	"$oid":refs/heads/actual &&
73302051 BW	239
	240	git -C "$REPO" rev-parse "d" >expected &&
	241	git -C local rev-parse refs/heads/actual >actual &&
	242	test_cmp expected actual &&
763b47ba	243	grep "want $oid" log
73302051 BW	244	'
	245
	246	test_expect_success 'fetching multiple refs' '
	247	test_when_finished "rm -f log" &&
	248
	249	rm -rf local &&
	250	cp -r "$LOCAL_PRISTINE" local &&
72dc1728	251	GIT_TRACE_PACKET="$(pwd)/log" git -C local fetch origin main baz &&
73302051	252
72dc1728 JS	253	git -C "$REPO" rev-parse "main" "baz" >expected &&
72dc1728 JS	254	git -C local rev-parse refs/remotes/origin/main refs/remotes/origin/baz >actual &&
73302051	255	test_cmp expected actual &&
72dc1728	256	grep "want-ref refs/heads/main" log &&
73302051 BW	257	grep "want-ref refs/heads/baz" log
	258	'
	259
	260	test_expect_success 'fetching ref and exact OID' '
	261	test_when_finished "rm -f log" &&
	262
	263	rm -rf local &&
	264	cp -r "$LOCAL_PRISTINE" local &&
763b47ba	265	oid=$(git -C "$REPO" rev-parse b) &&
73302051	266	GIT_TRACE_PACKET="$(pwd)/log" git -C local fetch origin \
72dc1728	267	main "$oid":refs/heads/actual &&
73302051	268
72dc1728 JS	269	git -C "$REPO" rev-parse "main" "b" >expected &&
72dc1728 JS	270	git -C local rev-parse refs/remotes/origin/main refs/heads/actual >actual &&
73302051	271	test_cmp expected actual &&
763b47ba	272	grep "want $oid" log &&
72dc1728	273	grep "want-ref refs/heads/main" log
73302051 BW	274	'
	275
	276	test_expect_success 'fetching with wildcard that does not match any refs' '
	277	test_when_finished "rm -f log" &&
	278
	279	rm -rf local &&
	280	cp -r "$LOCAL_PRISTINE" local &&
	281	git -C local fetch origin refs/heads/none:refs/heads/ >out &&
	282	test_must_be_empty out
	283	'
	284
	285	test_expect_success 'fetching with wildcard that matches multiple refs' '
	286	test_when_finished "rm -f log" &&
	287
	288	rm -rf local &&
	289	cp -r "$LOCAL_PRISTINE" local &&
	290	GIT_TRACE_PACKET="$(pwd)/log" git -C local fetch origin refs/heads/o:refs/heads/o &&
	291
	292	git -C "$REPO" rev-parse "o/foo" "o/bar" >expected &&
	293	git -C local rev-parse "o/foo" "o/bar" >actual &&
	294	test_cmp expected actual &&
	295	grep "want-ref refs/heads/o/foo" log &&
	296	grep "want-ref refs/heads/o/bar" log
	297	'
	298
39551406 KA	299	REPO="$(pwd)/repo-ns"
	300
	301	test_expect_success 'setup namespaced repo' '
	302	(
	303	git init -b main "$REPO" &&
	304	cd "$REPO" &&
	305	test_commit a &&
	306	test_commit b &&
	307	git checkout a &&
	308	test_commit c &&
	309	git checkout a &&
	310	test_commit d &&
	311	git update-ref refs/heads/ns-no b &&
	312	git update-ref refs/namespaces/ns/refs/heads/ns-yes c &&
	313	git update-ref refs/namespaces/ns/refs/heads/hidden d
	314	) &&
	315	git -C "$REPO" config uploadpack.allowRefInWant true
	316	'
	317
	318	test_expect_success 'with namespace: want-ref is considered relative to namespace' '
	319	wanted_ref=refs/heads/ns-yes &&
	320
	321	oid=$(git -C "$REPO" rev-parse "refs/namespaces/ns/$wanted_ref") &&
	322	cat >expected_refs <<-EOF &&
	323	$oid $wanted_ref
	324	EOF
	325	cat >expected_commits <<-EOF &&
	326	$oid
	327	$(git -C "$REPO" rev-parse a)
	328	EOF
	329
	330	write_fetch_command >pkt <<-EOF &&
	331	want-ref $wanted_ref
	332	EOF
	333	test-tool pkt-line pack <pkt >in &&
	334
	335	GIT_NAMESPACE=ns test-tool -C "$REPO" serve-v2 --stateless-rpc >out <in &&
	336	check_output
	337	'
	338
	339	test_expect_success 'with namespace: want-ref outside namespace is unknown' '
	340	wanted_ref=refs/heads/ns-no &&
	341
	342	write_fetch_command >pkt <<-EOF &&
	343	want-ref $wanted_ref
	344	EOF
	345	test-tool pkt-line pack <pkt >in &&
	346
	347	test_must_fail env GIT_NAMESPACE=ns \
	348	test-tool -C "$REPO" serve-v2 --stateless-rpc >out <in &&
	349	grep "unknown ref" out
	350	'
	351
	352	# Cross-check refs/heads/ns-no indeed exists
	353	test_expect_success 'without namespace: want-ref outside namespace succeeds' '
	354	wanted_ref=refs/heads/ns-no &&
	355
	356	oid=$(git -C "$REPO" rev-parse $wanted_ref) &&
	357	cat >expected_refs <<-EOF &&
	358	$oid $wanted_ref
	359	EOF
	360	cat >expected_commits <<-EOF &&
	361	$oid
	362	$(git -C "$REPO" rev-parse a)
363	EOF
364
365	write_fetch_command >pkt <<-EOF &&
366	want-ref $wanted_ref
367	EOF
368	test-tool pkt-line pack <pkt >in &&
369
370	test-tool -C "$REPO" serve-v2 --stateless-rpc >out <in &&
371	check_output
372	'
373
374	test_expect_success 'with namespace: hideRefs is matched, relative to namespace' '
375	wanted_ref=refs/heads/hidden &&
376	git -C "$REPO" config transfer.hideRefs $wanted_ref &&
377
378	write_fetch_command >pkt <<-EOF &&
379	want-ref $wanted_ref
380	EOF
381	test-tool pkt-line pack <pkt >in &&
382
383	test_must_fail env GIT_NAMESPACE=ns \
384	test-tool -C "$REPO" serve-v2 --stateless-rpc >out <in &&
385	grep "unknown ref" out
386	'
387
388	# Cross-check refs/heads/hidden indeed exists
389	test_expect_success 'with namespace: want-ref succeeds if hideRefs is removed' '
390	wanted_ref=refs/heads/hidden &&
391	git -C "$REPO" config --unset transfer.hideRefs $wanted_ref &&
392
393	oid=$(git -C "$REPO" rev-parse "refs/namespaces/ns/$wanted_ref") &&
394	cat >expected_refs <<-EOF &&
395	$oid $wanted_ref
396	EOF
397	cat >expected_commits <<-EOF &&
398	$oid
399	$(git -C "$REPO" rev-parse a)
400	EOF
401
402	write_fetch_command >pkt <<-EOF &&
403	want-ref $wanted_ref
404	EOF
405	test-tool pkt-line pack <pkt >in &&
406
407	GIT_NAMESPACE=ns test-tool -C "$REPO" serve-v2 --stateless-rpc >out <in &&
408	check_output
409	'
410
411	test_expect_success 'without namespace: relative hideRefs does not match' '
412	wanted_ref=refs/namespaces/ns/refs/heads/hidden &&
413	git -C "$REPO" config transfer.hideRefs refs/heads/hidden &&
414
415	oid=$(git -C "$REPO" rev-parse $wanted_ref) &&
416	cat >expected_refs <<-EOF &&
417	$oid $wanted_ref
418	EOF
419	cat >expected_commits <<-EOF &&
420	$oid
421	$(git -C "$REPO" rev-parse a)
422	EOF
423
424	write_fetch_command >pkt <<-EOF &&
425	want-ref $wanted_ref
426	EOF
427	test-tool pkt-line pack <pkt >in &&
428
429	test-tool -C "$REPO" serve-v2 --stateless-rpc >out <in &&
430	check_output
431	'
432
433
7f005b0f SG	434	. "$TEST_DIRECTORY"/lib-httpd.sh
	435	start_httpd
	436
	437	REPO="$HTTPD_DOCUMENT_ROOT_PATH/repo"
	438	LOCAL_PRISTINE="$(pwd)/local_pristine"
	439
	440	test_expect_success 'setup repos for change-while-negotiating test' '
	441	(
72dc1728	442	git init -b main "$REPO" &&
7f005b0f SG	443	cd "$REPO" &&
	444	>.git/git-daemon-export-ok &&
	445	test_commit m1 &&
	446	git tag -d m1 &&
	447
	448	# Local repo with many commits (so that negotiation will take
	449	# more than 1 request/response pair)
	450	rm -rf "$LOCAL_PRISTINE" &&
	451	git clone "http://127.0.0.1:$LIB_HTTPD_PORT/smart/repo" "$LOCAL_PRISTINE" &&
	452	cd "$LOCAL_PRISTINE" &&
	453	git checkout -b side &&
	454	test_commit_bulk --id=s 33 &&
	455
	456	# Add novel commits to upstream
72dc1728	457	git checkout main &&
7f005b0f SG	458	cd "$REPO" &&
	459	test_commit m2 &&
	460	test_commit m3 &&
	461	git tag -d m2 m3
	462	) &&
eafff6e4	463	git -C "$LOCAL_PRISTINE" remote set-url origin "http://127.0.0.1:$LIB_HTTPD_PORT/one_time_perl/repo" &&
7f005b0f SG	464	git -C "$LOCAL_PRISTINE" config protocol.version 2
	465	'
	466
	467	inconsistency () {
	468	# Simulate that the server initially reports $2 as the ref
	469	# corresponding to $1, and after that, $1 as the ref corresponding to
	470	# $1. This corresponds to the real-life situation where the server's
	471	# repository appears to change during negotiation, for example, when
	472	# different servers in a load-balancing arrangement serve (stateless)
	473	# RPCs during a single negotiation.
eacaa1c1 DL	474	oid1=$(git -C "$REPO" rev-parse $1) &&
eacaa1c1 DL	475	oid2=$(git -C "$REPO" rev-parse $2) &&
eafff6e4	476	echo "s/$oid1/$oid2/" >"$HTTPD_ROOT_PATH/one-time-perl"
7f005b0f SG	477	}
	478
	479	test_expect_success 'server is initially ahead - no ref in want' '
	480	git -C "$REPO" config uploadpack.allowRefInWant false &&
	481	rm -rf local &&
	482	cp -r "$LOCAL_PRISTINE" local &&
72dc1728	483	inconsistency main $(test_oid numeric) &&
7f005b0f SG	484	test_must_fail git -C local fetch 2>err &&
	485	test_i18ngrep "fatal: remote error: upload-pack: not our ref" err
	486	'
	487
	488	test_expect_success 'server is initially ahead - ref in want' '
	489	git -C "$REPO" config uploadpack.allowRefInWant true &&
	490	rm -rf local &&
	491	cp -r "$LOCAL_PRISTINE" local &&
72dc1728	492	inconsistency main $(test_oid numeric) &&
7f005b0f SG	493	git -C local fetch &&
7f005b0f SG	494
72dc1728 JS	495	git -C "$REPO" rev-parse --verify main >expected &&
72dc1728 JS	496	git -C local rev-parse --verify refs/remotes/origin/main >actual &&
7f005b0f SG	497	test_cmp expected actual
	498	'
	499
	500	test_expect_success 'server is initially behind - no ref in want' '
	501	git -C "$REPO" config uploadpack.allowRefInWant false &&
	502	rm -rf local &&
	503	cp -r "$LOCAL_PRISTINE" local &&
72dc1728	504	inconsistency main "main^" &&
7f005b0f SG	505	git -C local fetch &&
7f005b0f SG	506
72dc1728 JS	507	git -C "$REPO" rev-parse --verify "main^" >expected &&
72dc1728 JS	508	git -C local rev-parse --verify refs/remotes/origin/main >actual &&
7f005b0f SG	509	test_cmp expected actual
	510	'
	511
	512	test_expect_success 'server is initially behind - ref in want' '
	513	git -C "$REPO" config uploadpack.allowRefInWant true &&
	514	rm -rf local &&
	515	cp -r "$LOCAL_PRISTINE" local &&
72dc1728	516	inconsistency main "main^" &&
7f005b0f SG	517	git -C local fetch &&
7f005b0f SG	518
72dc1728 JS	519	git -C "$REPO" rev-parse --verify "main" >expected &&
72dc1728 JS	520	git -C local rev-parse --verify refs/remotes/origin/main >actual &&
7f005b0f SG	521	test_cmp expected actual
	522	'
	523
72dc1728	524	test_expect_success 'server loses a ref - ref in want' '
7f005b0f SG	525	git -C "$REPO" config uploadpack.allowRefInWant true &&
	526	rm -rf local &&
	527	cp -r "$LOCAL_PRISTINE" local &&
97cf8d50	528	echo "s/main/rain/" >"$HTTPD_ROOT_PATH/one-time-perl" &&
7f005b0f SG	529	test_must_fail git -C local fetch 2>err &&
7f005b0f SG	530
97cf8d50	531	test_i18ngrep "fatal: remote error: unknown ref refs/heads/rain" err
7f005b0f SG	532	'
	533
	534	# DO NOT add non-httpd-specific tests here, because the last part of this
	535	# test script is only executed when httpd is available and enabled.
	536
516e2b76	537	test_done