#!/bin/sh
test_description='signed commit tests'
. ./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 master &&
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 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 "^$(test_oid header) " >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 -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 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 GPG 'show good signature with custom format' '
cat >expect <<-\EOF &&
G
13B6F51ECDDE430D
C O Mitter <committer@example.com>
73D758744BE721698EC54E8713B6F51ECDDE430D
73D758744BE721698EC54E8713B6F51ECDDE430D
EOF
git log -1 --format="%G?%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
13B6F51ECDDE430D
C O Mitter <committer@example.com>
EOF
git log -1 --format="%G?%n%GK%n%GS%n%GF%n%GP" $(cat forged1.commit) >actual &&
test_cmp expect actual
'
test_expect_success GPG 'show untrusted signature with custom format' '
cat >expect <<-\EOF &&
U
65A0EEA02E30CAD7
Eris Discordia <discord@example.net>
F8364A59E07FFE9F4D63005A65A0EEA02E30CAD7
D4BE22311AD3131E5EDA29A461092E85B7227189
EOF
git log -1 --format="%G?%n%GK%n%GS%n%GF%n%GP" eighth-signed-alt >actual &&
test_cmp expect actual
'
test_expect_success GPG 'show untrusted signature with undefined trust level' '
cat >expect <<-\EOF &&
undefined
65A0EEA02E30CAD7
Eris Discordia <discord@example.net>
F8364A59E07FFE9F4D63005A65A0EEA02E30CAD7
D4BE22311AD3131E5EDA29A461092E85B7227189
EOF
git log -1 --format="%GT%n%GK%n%GS%n%GF%n%GP" eighth-signed-alt >actual &&
test_cmp expect actual
'
test_expect_success GPG 'show untrusted signature with ultimate trust level' '
cat >expect <<-\EOF &&
ultimate
13B6F51ECDDE430D
C O Mitter <committer@example.com>
73D758744BE721698EC54E8713B6F51ECDDE430D
73D758744BE721698EC54E8713B6F51ECDDE430D
EOF
git log -1 --format="%GT%n%GK%n%GS%n%GF%n%GP" sixth-signed >actual &&
test_cmp expect actual
'
test_expect_success GPG 'show unknown signature with custom format' '
cat >expect <<-\EOF &&
E
65A0EEA02E30CAD7
EOF
GNUPGHOME="$GNUPGHOME_NOT_USED" git log -1 --format="%G?%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
EOF
git log -1 --format="%G?%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
'
test_done
