[thirdparty/git.git] / t / t7510-signed-commit.sh

#!/bin/sh

test_description='signed commit tests'
GIT_TEST_DEFAULT_INITIAL_BRANCH_NAME=main
export GIT_TEST_DEFAULT_INITIAL_BRANCH_NAME

. ./test-lib.sh
GNUPGHOME_NOT_USED=$GNUPGHOME
. "$TEST_DIRECTORY/lib-gpg.sh"

test_expect_success GPG 'create signed commits' '
	test_oid_cache <<-\EOF &&
	header sha1:gpgsig
	header sha256:gpgsig-sha256
	EOF

	test_when_finished "test_unconfig commit.gpgsign" &&

	echo 1 >file && git add file &&
	test_tick && git commit -S -m initial &&
	git tag initial &&
	git branch side &&

	echo 2 >file && test_tick && git commit -a -S -m second &&
	git tag second &&

	git checkout side &&
	echo 3 >elif && git add elif &&
	test_tick && git commit -m "third on side" &&

	git checkout main &&
	test_tick && git merge -S side &&
	git tag merge &&

	echo 4 >file && test_tick && git commit -a -m "fourth unsigned" &&
	git tag fourth-unsigned &&

	test_tick && git commit --amend -S -m "fourth signed" &&
	git tag fourth-signed &&

	git config commit.gpgsign true &&
	echo 5 >file && test_tick && git commit -a -m "fifth signed" &&
	git tag fifth-signed &&

	git config commit.gpgsign false &&
	echo 6 >file && test_tick && git commit -a -m "sixth" &&
	git tag sixth-unsigned &&

	git config commit.gpgsign true &&
	echo 7 >file && test_tick && git commit -a -m "seventh" --no-gpg-sign &&
	git tag seventh-unsigned &&

	test_tick && git rebase -f HEAD^^ && git tag sixth-signed HEAD^ &&
	git tag seventh-signed &&

	echo 8 >file && test_tick && git commit -a -m eighth -SB7227189 &&
	git tag eighth-signed-alt &&

	# commit.gpgsign is still on but this must not be signed
	echo 9 | git commit-tree HEAD^{tree} >oid &&
	test_line_count = 1 oid &&
	git tag ninth-unsigned $(cat oid) &&
	# explicit -S of course must sign.
	echo 10 | git commit-tree -S HEAD^{tree} >oid &&
	test_line_count = 1 oid &&
	git tag tenth-signed $(cat oid) &&

	# --gpg-sign[=<key-id>] must sign.
	echo 11 | git commit-tree --gpg-sign HEAD^{tree} >oid &&
	test_line_count = 1 oid &&
	git tag eleventh-signed $(cat oid) &&
	echo 12 | git commit-tree --gpg-sign=B7227189 HEAD^{tree} >oid &&
	test_line_count = 1 oid &&
	git tag twelfth-signed-alt $(cat oid)
'

test_expect_success GPG 'verify and show signatures' '
	(
		for commit in initial second merge fourth-signed \
			fifth-signed sixth-signed seventh-signed tenth-signed \
			eleventh-signed
		do
			git verify-commit $commit &&
			git show --pretty=short --show-signature $commit >actual &&
			grep "Good signature from" actual &&
			! grep "BAD signature from" actual &&
			echo $commit OK || exit 1
		done
	) &&
	(
		for commit in merge^2 fourth-unsigned sixth-unsigned \
			seventh-unsigned ninth-unsigned
		do
			test_must_fail git verify-commit $commit &&
			git show --pretty=short --show-signature $commit >actual &&
			! grep "Good signature from" actual &&
			! grep "BAD signature from" actual &&
			echo $commit OK || exit 1
		done
	) &&
	(
		for commit in eighth-signed-alt twelfth-signed-alt
		do
			git show --pretty=short --show-signature $commit >actual &&
			grep "Good signature from" actual &&
			! grep "BAD signature from" actual &&
			grep "not certified" actual &&
			echo $commit OK || exit 1
		done
	)
'

test_expect_success GPG 'verify-commit exits failure on unknown signature' '
	test_must_fail env GNUPGHOME="$GNUPGHOME_NOT_USED" git verify-commit initial 2>actual &&
	! grep "Good signature from" actual &&
	! grep "BAD signature from" actual &&
	grep -q -F -e "No public key" -e "public key not found" actual
'

test_expect_success GPG 'verify-commit exits success on untrusted signature' '
	git verify-commit eighth-signed-alt 2>actual &&
	grep "Good signature from" actual &&
	! grep "BAD signature from" actual &&
	grep "not certified" actual
'

test_expect_success GPG 'verify-commit exits success with matching minTrustLevel' '
	test_config gpg.minTrustLevel ultimate &&
	git verify-commit sixth-signed
'

test_expect_success GPG 'verify-commit exits success with low minTrustLevel' '
	test_config gpg.minTrustLevel fully &&
	git verify-commit sixth-signed
'

test_expect_success GPG 'verify-commit exits failure with high minTrustLevel' '
	test_config gpg.minTrustLevel ultimate &&
	test_must_fail git verify-commit eighth-signed-alt
'

test_expect_success GPG 'verify signatures with --raw' '
	(
		for commit in initial second merge fourth-signed fifth-signed sixth-signed seventh-signed
		do
			git verify-commit --raw $commit 2>actual &&
			grep "GOODSIG" actual &&
			! grep "BADSIG" actual &&
			echo $commit OK || exit 1
		done
	) &&
	(
		for commit in merge^2 fourth-unsigned sixth-unsigned seventh-unsigned
		do
			test_must_fail git verify-commit --raw $commit 2>actual &&
			! grep "GOODSIG" actual &&
			! grep "BADSIG" actual &&
			echo $commit OK || exit 1
		done
	) &&
	(
		for commit in eighth-signed-alt
		do
			git verify-commit --raw $commit 2>actual &&
			grep "GOODSIG" actual &&
			! grep "BADSIG" actual &&
			grep "TRUST_UNDEFINED" actual &&
			echo $commit OK || exit 1
		done
	)
'

test_expect_success GPG 'proper header is used for hash algorithm' '
	git cat-file commit fourth-signed >output &&
	grep "^$(test_oid header) -----BEGIN PGP SIGNATURE-----" output
'

test_expect_success GPG 'show signed commit with signature' '
	git show -s initial >commit &&
	git show -s --show-signature initial >show &&
	git verify-commit -v initial >verify.1 2>verify.2 &&
	git cat-file commit initial >cat &&
	grep -v -e "gpg: " -e "Warning: " show >show.commit &&
	grep -e "gpg: " -e "Warning: " show >show.gpg &&
	grep -v "^ " cat | grep -v "^gpgsig.* " >cat.commit &&
	test_cmp show.commit commit &&
	test_cmp show.gpg verify.2 &&
	test_cmp cat.commit verify.1
'

test_expect_success GPG 'detect fudged signature' '
	git cat-file commit seventh-signed >raw &&
	sed -e "s/^seventh/7th forged/" raw >forged1 &&
	git hash-object -w -t commit forged1 >forged1.commit &&
	test_must_fail git verify-commit $(cat forged1.commit) &&
	git show --pretty=short --show-signature $(cat forged1.commit) >actual1 &&
	grep "BAD signature from" actual1 &&
	! grep "Good signature from" actual1
'

test_expect_success GPG 'detect fudged signature with NUL' '
	git cat-file commit seventh-signed >raw &&
	cat raw >forged2 &&
	echo Qwik | tr "Q" "\000" >>forged2 &&
	git hash-object --literally -w -t commit forged2 >forged2.commit &&
	test_must_fail git verify-commit $(cat forged2.commit) &&
	git show --pretty=short --show-signature $(cat forged2.commit) >actual2 &&
	grep "BAD signature from" actual2 &&
	! grep "Good signature from" actual2
'

test_expect_success GPG 'amending already signed commit' '
	git checkout -f fourth-signed^0 &&
	git commit --amend -S --no-edit &&
	git verify-commit HEAD &&
	git show -s --show-signature HEAD >actual &&
	grep "Good signature from" actual &&
	! grep "BAD signature from" actual
'

test_expect_success GPG2 'bare signature' '
	git verify-commit fifth-signed 2>expect &&
	echo >>expect &&
	git log -1 --format="%GG" fifth-signed >actual &&
	test_cmp expect actual
'

test_expect_success GPG 'show good signature with custom format' '
	cat >expect <<-\EOF &&
	G
	ultimate
	13B6F51ECDDE430D
	C O Mitter <committer@example.com>
	73D758744BE721698EC54E8713B6F51ECDDE430D
	73D758744BE721698EC54E8713B6F51ECDDE430D
	EOF
	git log -1 --format="%G?%n%GT%n%GK%n%GS%n%GF%n%GP" sixth-signed >actual &&
	test_cmp expect actual
'

test_expect_success GPG 'show bad signature with custom format' '
	cat >expect <<-\EOF &&
	B
	undefined
	13B6F51ECDDE430D
	C O Mitter <committer@example.com>


	EOF
	git log -1 --format="%G?%n%GT%n%GK%n%GS%n%GF%n%GP" $(cat forged1.commit) >actual &&
	test_cmp expect actual
'

test_expect_success GPG 'show untrusted signature with custom format' '
	cat >expect <<-\EOF &&
	U
	undefined
	65A0EEA02E30CAD7
	Eris Discordia <discord@example.net>
	F8364A59E07FFE9F4D63005A65A0EEA02E30CAD7
	D4BE22311AD3131E5EDA29A461092E85B7227189
	EOF
	git log -1 --format="%G?%n%GT%n%GK%n%GS%n%GF%n%GP" eighth-signed-alt >actual &&
	test_cmp expect actual
'

test_expect_success GPG 'show untrusted signature with undefined trust level' '
	cat >expect <<-\EOF &&
	U
	undefined
	65A0EEA02E30CAD7
	Eris Discordia <discord@example.net>
	F8364A59E07FFE9F4D63005A65A0EEA02E30CAD7
	D4BE22311AD3131E5EDA29A461092E85B7227189
	EOF
	git log -1 --format="%G?%n%GT%n%GK%n%GS%n%GF%n%GP" eighth-signed-alt >actual &&
	test_cmp expect actual
'

test_expect_success GPG 'show untrusted signature with ultimate trust level' '
	cat >expect <<-\EOF &&
	G
	ultimate
	13B6F51ECDDE430D
	C O Mitter <committer@example.com>
	73D758744BE721698EC54E8713B6F51ECDDE430D
	73D758744BE721698EC54E8713B6F51ECDDE430D
	EOF
	git log -1 --format="%G?%n%GT%n%GK%n%GS%n%GF%n%GP" sixth-signed >actual &&
	test_cmp expect actual
'

test_expect_success GPG 'show unknown signature with custom format' '
	cat >expect <<-\EOF &&
	E
	undefined
	65A0EEA02E30CAD7


	EOF
	GNUPGHOME="$GNUPGHOME_NOT_USED" git log -1 --format="%G?%n%GT%n%GK%n%GS%n%GF%n%GP" eighth-signed-alt >actual &&
	test_cmp expect actual
'

test_expect_success GPG 'show lack of signature with custom format' '
	cat >expect <<-\EOF &&
	N
	undefined


	EOF
	git log -1 --format="%G?%n%GT%n%GK%n%GS%n%GF%n%GP" seventh-unsigned >actual &&
	test_cmp expect actual
'

test_expect_success GPG 'log.showsignature behaves like --show-signature' '
	test_config log.showsignature true &&
	git show initial >actual &&
	grep "gpg: Signature made" actual &&
	grep "gpg: Good signature" actual
'

test_expect_success GPG 'check config gpg.format values' '
	test_config gpg.format openpgp &&
	git commit -S --amend -m "success" &&
	test_config gpg.format OpEnPgP &&
	test_must_fail git commit -S --amend -m "fail"
'

test_expect_success GPG 'detect fudged commit with double signature' '
	sed -e "/gpgsig/,/END PGP/d" forged1 >double-base &&
	sed -n -e "/gpgsig/,/END PGP/p" forged1 | \
		sed -e "s/^$(test_oid header)//;s/^ //" | gpg --dearmor >double-sig1.sig &&
	gpg -o double-sig2.sig -u 29472784 --detach-sign double-base &&
	cat double-sig1.sig double-sig2.sig | gpg --enarmor >double-combined.asc &&
	sed -e "s/^\(-.*\)ARMORED FILE/\1SIGNATURE/;1s/^/$(test_oid header) /;2,\$s/^/ /" \
		double-combined.asc > double-gpgsig &&
	sed -e "/committer/r double-gpgsig" double-base >double-commit &&
	git hash-object -w -t commit double-commit >double-commit.commit &&
	test_must_fail git verify-commit $(cat double-commit.commit) &&
	git show --pretty=short --show-signature $(cat double-commit.commit) >double-actual &&
	grep "BAD signature from" double-actual &&
	grep "Good signature from" double-actual
'

test_expect_success GPG 'show double signature with custom format' '
	cat >expect <<-\EOF &&
	E


	EOF
	git log -1 --format="%G?%n%GK%n%GS%n%GF%n%GP" $(cat double-commit.commit) >actual &&
	test_cmp expect actual
'


# NEEDSWORK: This test relies on the test_tick commit/author dates from the first
# 'create signed commits' test even though it creates its own
test_expect_success GPG 'verify-commit verifies multiply signed commits' '
	git init multiply-signed &&
	cd multiply-signed &&
	test_commit first &&
	echo 1 >second &&
	git add second &&
	tree=$(git write-tree) &&
	parent=$(git rev-parse HEAD^{commit}) &&
	git commit --gpg-sign -m second &&
	git cat-file commit HEAD &&
	# Avoid trailing whitespace.
	sed -e "s/^Q//" -e "s/^Z/ /" >commit <<-EOF &&
	Qtree $tree
	Qparent $parent
	Qauthor A U Thor <author@example.com> 1112912653 -0700
	Qcommitter C O Mitter <committer@example.com> 1112912653 -0700
	Qgpgsig -----BEGIN PGP SIGNATURE-----
	QZ
	Q iHQEABECADQWIQRz11h0S+chaY7FTocTtvUezd5DDQUCX/uBDRYcY29tbWl0dGVy
	Q QGV4YW1wbGUuY29tAAoJEBO29R7N3kMNd+8AoK1I8mhLHviPH+q2I5fIVgPsEtYC
	Q AKCTqBh+VabJceXcGIZuF0Ry+udbBQ==
	Q =tQ0N
	Q -----END PGP SIGNATURE-----
	Qgpgsig-sha256 -----BEGIN PGP SIGNATURE-----
	QZ
	Q iHQEABECADQWIQRz11h0S+chaY7FTocTtvUezd5DDQUCX/uBIBYcY29tbWl0dGVy
	Q QGV4YW1wbGUuY29tAAoJEBO29R7N3kMN/NEAn0XO9RYSBj2dFyozi0JKSbssYMtO
	Q AJwKCQ1BQOtuwz//IjU8TiS+6S4iUw==
	Q =pIwP
	Q -----END PGP SIGNATURE-----
	Q
	Qsecond
	EOF
	head=$(git hash-object -t commit -w commit) &&
	git reset --hard $head &&
	git verify-commit $head 2>actual &&
	grep "Good signature from" actual &&
	! grep "BAD signature from" actual
'

test_expect_success 'custom `gpg.program`' '
	write_script fake-gpg <<-\EOF &&
	args="$*"

	# skip uninteresting options
	while case "$1" in
	--status-fd=*|--keyid-format=*) ;; # skip
	*) break;;
	esac; do shift; done

	case "$1" in
	-bsau)
		test -z "$LET_GPG_PROGRAM_FAIL" || {
			echo "zOMG signing failed!" >&2
			exit 1
		}
		cat >sign.file
		echo "[GNUPG:] SIG_CREATED $args" >&2
		echo "-----BEGIN PGP MESSAGE-----"
		echo "$args"
		echo "-----END PGP MESSAGE-----"
		;;
	--verify)
		cat "$2" >verify.file
		exit 0
		;;
	*)
		echo "Unhandled args: $*" >&2
		exit 1
		;;
	esac
	EOF

	test_config gpg.program "$(pwd)/fake-gpg" &&
	git commit -S --allow-empty -m signed-commit &&
	test_path_exists sign.file &&
	git show --show-signature &&
	test_path_exists verify.file &&

	test_must_fail env LET_GPG_PROGRAM_FAIL=1 \
	git commit -S --allow-empty -m must-fail 2>err &&
	grep zOMG err
'

test_done
Commit	Line	Data
247503f2 JH	1	#!/bin/sh
	2
	3	test_description='signed commit tests'
1e2ae142	4	GIT_TEST_DEFAULT_INITIAL_BRANCH_NAME=main
334afbc7 JS	5	export GIT_TEST_DEFAULT_INITIAL_BRANCH_NAME
334afbc7 JS	6
247503f2	7	. ./test-lib.sh
661a1806	8	GNUPGHOME_NOT_USED=$GNUPGHOME
247503f2 JH	9	. "$TEST_DIRECTORY/lib-gpg.sh"
	10
	11	test_expect_success GPG 'create signed commits' '
42d4e1d1	12	test_oid_cache <<-\EOF &&
	13	header sha1:gpgsig
	14	header sha256:gpgsig-sha256
	15	EOF
	16
4b8d14b4 NV	17	test_when_finished "test_unconfig commit.gpgsign" &&
4b8d14b4 NV	18
247503f2 JH	19	echo 1 >file && git add file &&
	20	test_tick && git commit -S -m initial &&
	21	git tag initial &&
	22	git branch side &&
	23
	24	echo 2 >file && test_tick && git commit -a -S -m second &&
	25	git tag second &&
	26
	27	git checkout side &&
	28	echo 3 >elif && git add elif &&
	29	test_tick && git commit -m "third on side" &&
	30
1e2ae142	31	git checkout main &&
247503f2 JH	32	test_tick && git merge -S side &&
	33	git tag merge &&
	34
	35	echo 4 >file && test_tick && git commit -a -m "fourth unsigned" &&
	36	git tag fourth-unsigned &&
	37
c871a1d1	38	test_tick && git commit --amend -S -m "fourth signed" &&
4b8d14b4 NV	39	git tag fourth-signed &&
	40
	41	git config commit.gpgsign true &&
	42	echo 5 >file && test_tick && git commit -a -m "fifth signed" &&
	43	git tag fifth-signed &&
	44
	45	git config commit.gpgsign false &&
	46	echo 6 >file && test_tick && git commit -a -m "sixth" &&
	47	git tag sixth-unsigned &&
	48
	49	git config commit.gpgsign true &&
	50	echo 7 >file && test_tick && git commit -a -m "seventh" --no-gpg-sign &&
	51	git tag seventh-unsigned &&
	52
	53	test_tick && git rebase -f HEAD^^ && git tag sixth-signed HEAD^ &&
99094a7a	54	git tag seventh-signed &&
4baf839f JK	55
4baf839f JK	56	echo 8 >file && test_tick && git commit -a -m eighth -SB7227189 &&
66948561 JH	57	git tag eighth-signed-alt &&
	58
	59	# commit.gpgsign is still on but this must not be signed
41a74bd0 MÅ	60	echo 9 \| git commit-tree HEAD^{tree} >oid &&
	61	test_line_count = 1 oid &&
	62	git tag ninth-unsigned $(cat oid) &&
66948561	63	# explicit -S of course must sign.
41a74bd0 MÅ	64	echo 10 \| git commit-tree -S HEAD^{tree} >oid &&
41a74bd0 MÅ	65	test_line_count = 1 oid &&
70ddbd77 BR	66	git tag tenth-signed $(cat oid) &&
	67
	68	# --gpg-sign[=<key-id>] must sign.
	69	echo 11 \| git commit-tree --gpg-sign HEAD^{tree} >oid &&
	70	test_line_count = 1 oid &&
	71	git tag eleventh-signed $(cat oid) &&
	72	echo 12 \| git commit-tree --gpg-sign=B7227189 HEAD^{tree} >oid &&
	73	test_line_count = 1 oid &&
0517f591	74	git tag twelfth-signed-alt $(cat oid)
247503f2 JH	75	'
247503f2 JH	76
8e92c2cf	77	test_expect_success GPG 'verify and show signatures' '
247503f2	78	(
66948561	79	for commit in initial second merge fourth-signed \
70ddbd77 BR	80	fifth-signed sixth-signed seventh-signed tenth-signed \
70ddbd77 BR	81	eleventh-signed
247503f2	82	do
8e92c2cf	83	git verify-commit $commit &&
247503f2	84	git show --pretty=short --show-signature $commit >actual &&
7b1732c1 MG	85	grep "Good signature from" actual &&
	86	! grep "BAD signature from" actual &&
	87	echo $commit OK \|\| exit 1
247503f2 JH	88	done
	89	) &&
	90	(
66948561 JH	91	for commit in merge^2 fourth-unsigned sixth-unsigned \
66948561 JH	92	seventh-unsigned ninth-unsigned
247503f2	93	do
8e92c2cf	94	test_must_fail git verify-commit $commit &&
247503f2	95	git show --pretty=short --show-signature $commit >actual &&
7b1732c1 MG	96	! grep "Good signature from" actual &&
	97	! grep "BAD signature from" actual &&
	98	echo $commit OK \|\| exit 1
4baf839f JK	99	done
	100	) &&
	101	(
70ddbd77	102	for commit in eighth-signed-alt twelfth-signed-alt
4baf839f JK	103	do
	104	git show --pretty=short --show-signature $commit >actual &&
	105	grep "Good signature from" actual &&
	106	! grep "BAD signature from" actual &&
	107	grep "not certified" actual &&
	108	echo $commit OK \|\| exit 1
247503f2 JH	109	done
	110	)
	111	'
	112
1bfb57f6	113	test_expect_success GPG 'verify-commit exits failure on unknown signature' '
0517f591	114	test_must_fail env GNUPGHOME="$GNUPGHOME_NOT_USED" git verify-commit initial 2>actual &&
1bfb57f6 FS	115	! grep "Good signature from" actual &&
	116	! grep "BAD signature from" actual &&
	117	grep -q -F -e "No public key" -e "public key not found" actual
	118	'
	119
434060ec	120	test_expect_success GPG 'verify-commit exits success on untrusted signature' '
8e98e5f2	121	git verify-commit eighth-signed-alt 2>actual &&
	122	grep "Good signature from" actual &&
	123	! grep "BAD signature from" actual &&
	124	grep "not certified" actual
	125	'
	126
54887b46 HJI	127	test_expect_success GPG 'verify-commit exits success with matching minTrustLevel' '
	128	test_config gpg.minTrustLevel ultimate &&
	129	git verify-commit sixth-signed
	130	'
	131
	132	test_expect_success GPG 'verify-commit exits success with low minTrustLevel' '
	133	test_config gpg.minTrustLevel fully &&
	134	git verify-commit sixth-signed
	135	'
	136
	137	test_expect_success GPG 'verify-commit exits failure with high minTrustLevel' '
	138	test_config gpg.minTrustLevel ultimate &&
	139	test_must_fail git verify-commit eighth-signed-alt
	140	'
	141
aeff29dd	142	test_expect_success GPG 'verify signatures with --raw' '
	143	(
	144	for commit in initial second merge fourth-signed fifth-signed sixth-signed seventh-signed
	145	do
	146	git verify-commit --raw $commit 2>actual &&
	147	grep "GOODSIG" actual &&
	148	! grep "BADSIG" actual &&
	149	echo $commit OK \|\| exit 1
	150	done
	151	) &&
	152	(
	153	for commit in merge^2 fourth-unsigned sixth-unsigned seventh-unsigned
	154	do
	155	test_must_fail git verify-commit --raw $commit 2>actual &&
	156	! grep "GOODSIG" actual &&
	157	! grep "BADSIG" actual &&
	158	echo $commit OK \|\| exit 1
	159	done
	160	) &&
	161	(
	162	for commit in eighth-signed-alt
	163	do
	164	git verify-commit --raw $commit 2>actual &&
	165	grep "GOODSIG" actual &&
	166	! grep "BADSIG" actual &&
	167	grep "TRUST_UNDEFINED" actual &&
	168	echo $commit OK \|\| exit 1
	169	done
	170	)
	171	'
	172
42d4e1d1	173	test_expect_success GPG 'proper header is used for hash algorithm' '
	174	git cat-file commit fourth-signed >output &&
	175	grep "^$(test_oid header) -----BEGIN PGP SIGNATURE-----" output
	176	'
	177
8e92c2cf MG	178	test_expect_success GPG 'show signed commit with signature' '
	179	git show -s initial >commit &&
	180	git show -s --show-signature initial >show &&
	181	git verify-commit -v initial >verify.1 2>verify.2 &&
	182	git cat-file commit initial >cat &&
3f88c1b5 KM	183	grep -v -e "gpg: " -e "Warning: " show >show.commit &&
3f88c1b5 KM	184	grep -e "gpg: " -e "Warning: " show >show.gpg &&
1fb5cf0d	185	grep -v "^ " cat \| grep -v "^gpgsig.* " >cat.commit &&
8e92c2cf MG	186	test_cmp show.commit commit &&
	187	test_cmp show.gpg verify.2 &&
	188	test_cmp cat.commit verify.1
	189	'
	190
247503f2	191	test_expect_success GPG 'detect fudged signature' '
526d56e0	192	git cat-file commit seventh-signed >raw &&
2f3cbcd8	193	sed -e "s/^seventh/7th forged/" raw >forged1 &&
247503f2	194	git hash-object -w -t commit forged1 >forged1.commit &&
9dd39821	195	test_must_fail git verify-commit $(cat forged1.commit) &&
247503f2 JH	196	git show --pretty=short --show-signature $(cat forged1.commit) >actual1 &&
	197	grep "BAD signature from" actual1 &&
	198	! grep "Good signature from" actual1
	199	'
	200
	201	test_expect_success GPG 'detect fudged signature with NUL' '
526d56e0	202	git cat-file commit seventh-signed >raw &&
247503f2 JH	203	cat raw >forged2 &&
247503f2 JH	204	echo Qwik \| tr "Q" "\000" >>forged2 &&
34959d80	205	git hash-object --literally -w -t commit forged2 >forged2.commit &&
9dd39821	206	test_must_fail git verify-commit $(cat forged2.commit) &&
247503f2 JH	207	git show --pretty=short --show-signature $(cat forged2.commit) >actual2 &&
	208	grep "BAD signature from" actual2 &&
	209	! grep "Good signature from" actual2
	210	'
	211
c871a1d1	212	test_expect_success GPG 'amending already signed commit' '
3b4b5a79	213	git checkout -f fourth-signed^0 &&
c871a1d1	214	git commit --amend -S --no-edit &&
8e92c2cf	215	git verify-commit HEAD &&
c871a1d1 JH	216	git show -s --show-signature HEAD >actual &&
	217	grep "Good signature from" actual &&
	218	! grep "BAD signature from" actual
	219	'
	220
2f36339f KS	221	test_expect_success GPG2 'bare signature' '
	222	git verify-commit fifth-signed 2>expect &&
	223	echo >>expect &&
	224	git log -1 --format="%GG" fifth-signed >actual &&
	225	test_cmp expect actual
	226	'
	227
06ca0f45 JK	228	test_expect_success GPG 'show good signature with custom format' '
	229	cat >expect <<-\EOF &&
	230	G
7891e465	231	ultimate
06ca0f45 JK	232	13B6F51ECDDE430D
06ca0f45 JK	233	C O Mitter <committer@example.com>
3daaaabe	234	73D758744BE721698EC54E8713B6F51ECDDE430D
1a550529	235	73D758744BE721698EC54E8713B6F51ECDDE430D
06ca0f45	236	EOF
7891e465	237	git log -1 --format="%G?%n%GT%n%GK%n%GS%n%GF%n%GP" sixth-signed >actual &&
06ca0f45 JK	238	test_cmp expect actual
	239	'
	240
	241	test_expect_success GPG 'show bad signature with custom format' '
	242	cat >expect <<-\EOF &&
	243	B
7891e465	244	undefined
06ca0f45 JK	245	13B6F51ECDDE430D
06ca0f45 JK	246	C O Mitter <committer@example.com>
3daaaabe	247
1a550529	248
06ca0f45	249	EOF
7891e465	250	git log -1 --format="%G?%n%GT%n%GK%n%GS%n%GF%n%GP" $(cat forged1.commit) >actual &&
06ca0f45 JK	251	test_cmp expect actual
	252	'
	253
661a1806	254	test_expect_success GPG 'show untrusted signature with custom format' '
06ca0f45 JK	255	cat >expect <<-\EOF &&
06ca0f45 JK	256	U
7891e465	257	undefined
1e690847	258	65A0EEA02E30CAD7
06ca0f45	259	Eris Discordia <discord@example.net>
1e690847	260	F8364A59E07FFE9F4D63005A65A0EEA02E30CAD7
1a550529	261	D4BE22311AD3131E5EDA29A461092E85B7227189
06ca0f45	262	EOF
7891e465	263	git log -1 --format="%G?%n%GT%n%GK%n%GS%n%GF%n%GP" eighth-signed-alt >actual &&
06ca0f45 JK	264	test_cmp expect actual
	265	'
	266
54887b46 HJI	267	test_expect_success GPG 'show untrusted signature with undefined trust level' '
54887b46 HJI	268	cat >expect <<-\EOF &&
7891e465	269	U
54887b46 HJI	270	undefined
	271	65A0EEA02E30CAD7
	272	Eris Discordia <discord@example.net>
	273	F8364A59E07FFE9F4D63005A65A0EEA02E30CAD7
	274	D4BE22311AD3131E5EDA29A461092E85B7227189
	275	EOF
7891e465	276	git log -1 --format="%G?%n%GT%n%GK%n%GS%n%GF%n%GP" eighth-signed-alt >actual &&
54887b46 HJI	277	test_cmp expect actual
	278	'
	279
	280	test_expect_success GPG 'show untrusted signature with ultimate trust level' '
	281	cat >expect <<-\EOF &&
7891e465	282	G
54887b46 HJI	283	ultimate
	284	13B6F51ECDDE430D
	285	C O Mitter <committer@example.com>
	286	73D758744BE721698EC54E8713B6F51ECDDE430D
	287	73D758744BE721698EC54E8713B6F51ECDDE430D
	288	EOF
7891e465	289	git log -1 --format="%G?%n%GT%n%GK%n%GS%n%GF%n%GP" sixth-signed >actual &&
54887b46 HJI	290	test_cmp expect actual
	291	'
	292
661a1806 MG	293	test_expect_success GPG 'show unknown signature with custom format' '
	294	cat >expect <<-\EOF &&
	295	E
7891e465	296	undefined
1e690847	297	65A0EEA02E30CAD7
661a1806	298
3daaaabe	299
1a550529	300
661a1806	301	EOF
7891e465	302	GNUPGHOME="$GNUPGHOME_NOT_USED" git log -1 --format="%G?%n%GT%n%GK%n%GS%n%GF%n%GP" eighth-signed-alt >actual &&
661a1806 MG	303	test_cmp expect actual
	304	'
	305
06ca0f45 JK	306	test_expect_success GPG 'show lack of signature with custom format' '
	307	cat >expect <<-\EOF &&
	308	N
7891e465	309	undefined
06ca0f45 JK	310
06ca0f45 JK	311
3daaaabe	312
1a550529	313
06ca0f45	314	EOF
7891e465	315	git log -1 --format="%G?%n%GT%n%GK%n%GS%n%GF%n%GP" seventh-unsigned >actual &&
06ca0f45 JK	316	test_cmp expect actual
	317	'
	318
fce04c3c MJ	319	test_expect_success GPG 'log.showsignature behaves like --show-signature' '
	320	test_config log.showsignature true &&
	321	git show initial >actual &&
	322	grep "gpg: Signature made" actual &&
	323	grep "gpg: Good signature" actual
	324	'
	325
1865a647 HS	326	test_expect_success GPG 'check config gpg.format values' '
	327	test_config gpg.format openpgp &&
	328	git commit -S --amend -m "success" &&
	329	test_config gpg.format OpEnPgP &&
	330	test_must_fail git commit -S --amend -m "fail"
	331	'
	332
da6cf1b3 MG	333	test_expect_success GPG 'detect fudged commit with double signature' '
	334	sed -e "/gpgsig/,/END PGP/d" forged1 >double-base &&
	335	sed -n -e "/gpgsig/,/END PGP/p" forged1 \| \
42d4e1d1	336	sed -e "s/^$(test_oid header)//;s/^ //" \| gpg --dearmor >double-sig1.sig &&
da6cf1b3 MG	337	gpg -o double-sig2.sig -u 29472784 --detach-sign double-base &&
da6cf1b3 MG	338	cat double-sig1.sig double-sig2.sig \| gpg --enarmor >double-combined.asc &&
42d4e1d1	339	sed -e "s/^\(-.*\)ARMORED FILE/\1SIGNATURE/;1s/^/$(test_oid header) /;2,\$s/^/ /" \
da6cf1b3 MG	340	double-combined.asc > double-gpgsig &&
	341	sed -e "/committer/r double-gpgsig" double-base >double-commit &&
	342	git hash-object -w -t commit double-commit >double-commit.commit &&
	343	test_must_fail git verify-commit $(cat double-commit.commit) &&
	344	git show --pretty=short --show-signature $(cat double-commit.commit) >double-actual &&
	345	grep "BAD signature from" double-actual &&
	346	grep "Good signature from" double-actual
	347	'
	348
	349	test_expect_success GPG 'show double signature with custom format' '
	350	cat >expect <<-\EOF &&
	351	E
	352
	353
3daaaabe	354
1a550529	355
da6cf1b3	356	EOF
1a550529	357	git log -1 --format="%G?%n%GK%n%GS%n%GF%n%GP" $(cat double-commit.commit) >actual &&
da6cf1b3 MG	358	test_cmp expect actual
	359	'
	360
1fb5cf0d	361
1bfb57f6 FS	362	# NEEDSWORK: This test relies on the test_tick commit/author dates from the first
1bfb57f6 FS	363	# 'create signed commits' test even though it creates its own
1fb5cf0d	364	test_expect_success GPG 'verify-commit verifies multiply signed commits' '
	365	git init multiply-signed &&
	366	cd multiply-signed &&
	367	test_commit first &&
	368	echo 1 >second &&
	369	git add second &&
	370	tree=$(git write-tree) &&
	371	parent=$(git rev-parse HEAD^{commit}) &&
	372	git commit --gpg-sign -m second &&
	373	git cat-file commit HEAD &&
	374	# Avoid trailing whitespace.
	375	sed -e "s/^Q//" -e "s/^Z/ /" >commit <<-EOF &&
	376	Qtree $tree
	377	Qparent $parent
	378	Qauthor A U Thor <author@example.com> 1112912653 -0700
	379	Qcommitter C O Mitter <committer@example.com> 1112912653 -0700
	380	Qgpgsig -----BEGIN PGP SIGNATURE-----
	381	QZ
	382	Q iHQEABECADQWIQRz11h0S+chaY7FTocTtvUezd5DDQUCX/uBDRYcY29tbWl0dGVy
	383	Q QGV4YW1wbGUuY29tAAoJEBO29R7N3kMNd+8AoK1I8mhLHviPH+q2I5fIVgPsEtYC
	384	Q AKCTqBh+VabJceXcGIZuF0Ry+udbBQ==
	385	Q =tQ0N
	386	Q -----END PGP SIGNATURE-----
	387	Qgpgsig-sha256 -----BEGIN PGP SIGNATURE-----
	388	QZ
	389	Q iHQEABECADQWIQRz11h0S+chaY7FTocTtvUezd5DDQUCX/uBIBYcY29tbWl0dGVy
	390	Q QGV4YW1wbGUuY29tAAoJEBO29R7N3kMN/NEAn0XO9RYSBj2dFyozi0JKSbssYMtO
	391	Q AJwKCQ1BQOtuwz//IjU8TiS+6S4iUw==
	392	Q =pIwP
	393	Q -----END PGP SIGNATURE-----
	394	Q
	395	Qsecond
	396	EOF
	397	head=$(git hash-object -t commit -w commit) &&
	398	git reset --hard $head &&
	399	git verify-commit $head 2>actual &&
	400	grep "Good signature from" actual &&
	401	! grep "BAD signature from" actual
	402	'
	403
8300d15d JS	404	test_expect_success 'custom `gpg.program`' '
	405	write_script fake-gpg <<-\EOF &&
	406	args="$*"
	407
	408	# skip uninteresting options
	409	while case "$1" in
	410	--status-fd=\|--keyid-format=) ;; # skip
	411	*) break;;
	412	esac; do shift; done
	413
	414	case "$1" in
	415	-bsau)
ad6b3207 JS	416	test -z "$LET_GPG_PROGRAM_FAIL" \|\| {
	417	echo "zOMG signing failed!" >&2
	418	exit 1
	419	}
8300d15d JS	420	cat >sign.file
	421	echo "[GNUPG:] SIG_CREATED $args" >&2
	422	echo "-----BEGIN PGP MESSAGE-----"
	423	echo "$args"
	424	echo "-----END PGP MESSAGE-----"
	425	;;
	426	--verify)
	427	cat "$2" >verify.file
	428	exit 0
	429	;;
	430	*)
	431	echo "Unhandled args: $*" >&2
	432	exit 1
	433	;;
	434	esac
	435	EOF
	436
	437	test_config gpg.program "$(pwd)/fake-gpg" &&
	438	git commit -S --allow-empty -m signed-commit &&
	439	test_path_exists sign.file &&
	440	git show --show-signature &&
ad6b3207 JS	441	test_path_exists verify.file &&
	442
	443	test_must_fail env LET_GPG_PROGRAM_FAIL=1 \
	444	git commit -S --allow-empty -m must-fail 2>err &&
	445	grep zOMG err
8300d15d JS	446	'
8300d15d JS	447
247503f2	448	test_done