[PATCH v7 8/9] ssh signing: tests for logs, tags & push certs
From: Fabian Stelzer <fs@gigacodes.de>
Signed-off-by: Fabian Stelzer <fs@gigacodes.de>
---
t/t4202-log.sh | 23 +++++
t/t5534-push-signed.sh | 101 +++++++++++++++++++
t/t7031-verify-tag-signed-ssh.sh | 161 +++++++++++++++++++++++++++++++
3 files changed, 285 insertions(+)
create mode 100755 t/t7031-verify-tag-signed-ssh.sh
diff --git a/t/t4202-log.sh b/t/t4202-log.sh
index 9dfead936b7..6a650dacd6e 100755
--- a/t/t4202-log.sh
+++ b/t/t4202-log.sh
@@ -1616,6 +1616,16 @@ test_expect_success GPGSM 'setup signed branch x509' '
git commit -S -m signed_commit
'
+test_expect_success GPGSSH 'setup sshkey signed branch' '
+ test_config gpg.format ssh &&
+ test_config user.signingkey "${GPGSSH_KEY_PRIMARY}" &&
+ test_when_finished "git reset --hard && git checkout main" &&
+ git checkout -b signed-ssh main &&
+ echo foo >foo &&
+ git add foo &&
+ git commit -S -m signed_commit
+'
+
test_expect_success GPGSM 'log x509 fingerprint' '
echo "F8BF62E0693D0694816377099909C779FA23FD65 | " >expect &&
git log -n1 --format="%GF | %GP" signed-x509 >actual &&
@@ -1628,6 +1638,13 @@ test_expect_success GPGSM 'log OpenPGP fingerprint' '
test_cmp expect actual
'
+test_expect_success GPGSSH 'log ssh key fingerprint' '
+ test_config gpg.ssh.allowedSignersFile "${GPGSSH_ALLOWED_SIGNERS}" &&
+ ssh-keygen -lf "${GPGSSH_KEY_PRIMARY}" | awk "{print \$2\" | \"}" >expect &&
+ git log -n1 --format="%GF | %GP" signed-ssh >actual &&
+ test_cmp expect actual
+'
+
test_expect_success GPG 'log --graph --show-signature' '
git log --graph --show-signature -n1 signed >actual &&
grep "^| gpg: Signature made" actual &&
@@ -1640,6 +1657,12 @@ test_expect_success GPGSM 'log --graph --show-signature x509' '
grep "^| gpgsm: Good signature" actual
'
+test_expect_success GPGSSH 'log --graph --show-signature ssh' '
+ test_config gpg.ssh.allowedSignersFile "${GPGSSH_ALLOWED_SIGNERS}" &&
+ git log --graph --show-signature -n1 signed-ssh >actual &&
+ grep "${GOOD_SIGNATURE_TRUSTED}" actual
+'
+
test_expect_success GPG 'log --graph --show-signature for merged tag' '
test_when_finished "git reset --hard && git checkout main" &&
git checkout -b plain main &&
diff --git a/t/t5534-push-signed.sh b/t/t5534-push-signed.sh
index bba768f5ded..24d374adbae 100755
--- a/t/t5534-push-signed.sh
+++ b/t/t5534-push-signed.sh
@@ -137,6 +137,53 @@ test_expect_success GPG 'signed push sends push certificate' '
test_cmp expect dst/push-cert-status
'
+test_expect_success GPGSSH 'ssh signed push sends push certificate' '
+ prepare_dst &&
+ mkdir -p dst/.git/hooks &&
+ git -C dst config gpg.ssh.allowedSignersFile "${GPGSSH_ALLOWED_SIGNERS}" &&
+ git -C dst config receive.certnonceseed sekrit &&
+ write_script dst/.git/hooks/post-receive <<-\EOF &&
+ # discard the update list
+ cat >/dev/null
+ # record the push certificate
+ if test -n "${GIT_PUSH_CERT-}"
+ then
+ git cat-file blob $GIT_PUSH_CERT >../push-cert
+ fi &&
+
+ cat >../push-cert-status <<E_O_F
+ SIGNER=${GIT_PUSH_CERT_SIGNER-nobody}
+ KEY=${GIT_PUSH_CERT_KEY-nokey}
+ STATUS=${GIT_PUSH_CERT_STATUS-nostatus}
+ NONCE_STATUS=${GIT_PUSH_CERT_NONCE_STATUS-nononcestatus}
+ NONCE=${GIT_PUSH_CERT_NONCE-nononce}
+ E_O_F
+
+ EOF
+
+ test_config gpg.format ssh &&
+ test_config user.signingkey "${GPGSSH_KEY_PRIMARY}" &&
+ FINGERPRINT=$(ssh-keygen -lf "${GPGSSH_KEY_PRIMARY}" | awk "{print \$2;}") &&
+ git push --signed dst noop ff +noff &&
+
+ (
+ cat <<-\EOF &&
+ SIGNER=principal with number 1
+ KEY=FINGERPRINT
+ STATUS=G
+ NONCE_STATUS=OK
+ EOF
+ sed -n -e "s/^nonce /NONCE=/p" -e "/^$/q" dst/push-cert
+ ) | sed -e "s|FINGERPRINT|$FINGERPRINT|" >expect &&
+
+ noop=$(git rev-parse noop) &&
+ ff=$(git rev-parse ff) &&
+ noff=$(git rev-parse noff) &&
+ grep "$noop $ff refs/heads/ff" dst/push-cert &&
+ grep "$noop $noff refs/heads/noff" dst/push-cert &&
+ test_cmp expect dst/push-cert-status
+'
+
test_expect_success GPG 'inconsistent push options in signed push not allowed' '
# First, invoke receive-pack with dummy input to obtain its preamble.
prepare_dst &&
@@ -276,6 +323,60 @@ test_expect_success GPGSM 'fail without key and heed user.signingkey x509' '
test_cmp expect dst/push-cert-status
'
+test_expect_success GPGSSH 'fail without key and heed user.signingkey ssh' '
+ test_config gpg.format ssh &&
+ prepare_dst &&
+ mkdir -p dst/.git/hooks &&
+ git -C dst config gpg.ssh.allowedSignersFile "${GPGSSH_ALLOWED_SIGNERS}" &&
+ git -C dst config receive.certnonceseed sekrit &&
+ write_script dst/.git/hooks/post-receive <<-\EOF &&
+ # discard the update list
+ cat >/dev/null
+ # record the push certificate
+ if test -n "${GIT_PUSH_CERT-}"
+ then
+ git cat-file blob $GIT_PUSH_CERT >../push-cert
+ fi &&
+
+ cat >../push-cert-status <<E_O_F
+ SIGNER=${GIT_PUSH_CERT_SIGNER-nobody}
+ KEY=${GIT_PUSH_CERT_KEY-nokey}
+ STATUS=${GIT_PUSH_CERT_STATUS-nostatus}
+ NONCE_STATUS=${GIT_PUSH_CERT_NONCE_STATUS-nononcestatus}
+ NONCE=${GIT_PUSH_CERT_NONCE-nononce}
+ E_O_F
+
+ EOF
+
+ test_config user.email hasnokey@nowhere.com &&
+ test_config gpg.format ssh &&
+ test_config user.signingkey "" &&
+ (
+ sane_unset GIT_COMMITTER_EMAIL &&
+ test_must_fail git push --signed dst noop ff +noff
+ ) &&
+ test_config user.signingkey "${GPGSSH_KEY_PRIMARY}" &&
+ FINGERPRINT=$(ssh-keygen -lf "${GPGSSH_KEY_PRIMARY}" | awk "{print \$2;}") &&
+ git push --signed dst noop ff +noff &&
+
+ (
+ cat <<-\EOF &&
+ SIGNER=principal with number 1
+ KEY=FINGERPRINT
+ STATUS=G
+ NONCE_STATUS=OK
+ EOF
+ sed -n -e "s/^nonce /NONCE=/p" -e "/^$/q" dst/push-cert
+ ) | sed -e "s|FINGERPRINT|$FINGERPRINT|" >expect &&
+
+ noop=$(git rev-parse noop) &&
+ ff=$(git rev-parse ff) &&
+ noff=$(git rev-parse noff) &&
+ grep "$noop $ff refs/heads/ff" dst/push-cert &&
+ grep "$noop $noff refs/heads/noff" dst/push-cert &&
+ test_cmp expect dst/push-cert-status
+'
+
test_expect_success GPG 'failed atomic push does not execute GPG' '
prepare_dst &&
git -C dst config receive.certnonceseed sekrit &&
diff --git a/t/t7031-verify-tag-signed-ssh.sh b/t/t7031-verify-tag-signed-ssh.sh
new file mode 100755
index 00000000000..06c9dd6c933
--- /dev/null
+++ b/t/t7031-verify-tag-signed-ssh.sh
@@ -0,0 +1,161 @@
+#!/bin/sh
+
+test_description='signed tag tests'
+GIT_TEST_DEFAULT_INITIAL_BRANCH_NAME=main
+export GIT_TEST_DEFAULT_INITIAL_BRANCH_NAME
+
+. ./test-lib.sh
+. "$TEST_DIRECTORY/lib-gpg.sh"
+
+test_expect_success GPGSSH 'create signed tags ssh' '
+ test_when_finished "test_unconfig commit.gpgsign" &&
+ test_config gpg.format ssh &&
+ test_config user.signingkey "${GPGSSH_KEY_PRIMARY}" &&
+
+ echo 1 >file && git add file &&
+ test_tick && git commit -m initial &&
+ git tag -s -m initial initial &&
+ git branch side &&
+
+ echo 2 >file && test_tick && git commit -a -m second &&
+ git tag -s -m second second &&
+
+ git checkout side &&
+ echo 3 >elif && git add elif &&
+ test_tick && git commit -m "third on side" &&
+
+ git checkout main &&
+ test_tick && git merge -S side &&
+ git tag -s -m merge merge &&
+
+ echo 4 >file && test_tick && git commit -a -S -m "fourth unsigned" &&
+ git tag -a -m fourth-unsigned fourth-unsigned &&
+
+ test_tick && git commit --amend -S -m "fourth signed" &&
+ git tag -s -m fourth fourth-signed &&
+
+ echo 5 >file && test_tick && git commit -a -m "fifth" &&
+ git tag fifth-unsigned &&
+
+ git config commit.gpgsign true &&
+ echo 6 >file && test_tick && git commit -a -m "sixth" &&
+ git tag -a -m sixth sixth-unsigned &&
+
+ test_tick && git rebase -f HEAD^^ && git tag -s -m 6th sixth-signed HEAD^ &&
+ git tag -m seventh -s seventh-signed &&
+
+ echo 8 >file && test_tick && git commit -a -m eighth &&
+ git tag -u"${GPGSSH_KEY_UNTRUSTED}" -m eighth eighth-signed-alt
+'
+
+test_expect_success GPGSSH 'verify and show ssh signatures' '
+ test_config gpg.ssh.allowedSignersFile "${GPGSSH_ALLOWED_SIGNERS}" &&
+ (
+ for tag in initial second merge fourth-signed sixth-signed seventh-signed
+ do
+ git verify-tag $tag 2>actual &&
+ grep "${GPGSSH_GOOD_SIGNATURE_TRUSTED}" actual &&
+ ! grep "${GPGSSH_BAD_SIGNATURE}" actual &&
+ echo $tag OK || exit 1
+ done
+ ) &&
+ (
+ for tag in fourth-unsigned fifth-unsigned sixth-unsigned
+ do
+ test_must_fail git verify-tag $tag 2>actual &&
+ ! grep "${GPGSSH_GOOD_SIGNATURE_TRUSTED}" actual &&
+ ! grep "${GPGSSH_BAD_SIGNATURE}" actual &&
+ echo $tag OK || exit 1
+ done
+ ) &&
+ (
+ for tag in eighth-signed-alt
+ do
+ test_must_fail git verify-tag $tag 2>actual &&
+ grep "${GPGSSH_GOOD_SIGNATURE_UNTRUSTED}" actual &&
+ ! grep "${GPGSSH_BAD_SIGNATURE}" actual &&
+ grep "${GPGSSH_KEY_NOT_TRUSTED}" actual &&
+ echo $tag OK || exit 1
+ done
+ )
+'
+
+test_expect_success GPGSSH 'detect fudged ssh signature' '
+ test_config gpg.ssh.allowedSignersFile "${GPGSSH_ALLOWED_SIGNERS}" &&
+ git cat-file tag seventh-signed >raw &&
+ sed -e "/^tag / s/seventh/7th forged/" raw >forged1 &&
+ git hash-object -w -t tag forged1 >forged1.tag &&
+ test_must_fail git verify-tag $(cat forged1.tag) 2>actual1 &&
+ grep "${GPGSSH_BAD_SIGNATURE}" actual1 &&
+ ! grep "${GPGSSH_GOOD_SIGNATURE_TRUSTED}" actual1 &&
+ ! grep "${GPGSSH_GOOD_SIGNATURE_UNTRUSTED}" actual1
+'
+
+test_expect_success GPGSSH 'verify ssh signatures with --raw' '
+ test_config gpg.ssh.allowedSignersFile "${GPGSSH_ALLOWED_SIGNERS}" &&
+ (
+ for tag in initial second merge fourth-signed sixth-signed seventh-signed
+ do
+ git verify-tag --raw $tag 2>actual &&
+ grep "${GPGSSH_GOOD_SIGNATURE_TRUSTED}" actual &&
+ ! grep "${GPGSSH_BAD_SIGNATURE}" actual &&
+ echo $tag OK || exit 1
+ done
+ ) &&
+ (
+ for tag in fourth-unsigned fifth-unsigned sixth-unsigned
+ do
+ test_must_fail git verify-tag --raw $tag 2>actual &&
+ ! grep "${GPGSSH_GOOD_SIGNATURE_TRUSTED}" actual &&
+ ! grep "${GPGSSH_BAD_SIGNATURE}" actual &&
+ echo $tag OK || exit 1
+ done
+ ) &&
+ (
+ for tag in eighth-signed-alt
+ do
+ test_must_fail git verify-tag --raw $tag 2>actual &&
+ grep "${GPGSSH_GOOD_SIGNATURE_UNTRUSTED}" actual &&
+ ! grep "${GPGSSH_BAD_SIGNATURE}" actual &&
+ echo $tag OK || exit 1
+ done
+ )
+'
+
+test_expect_success GPGSSH 'verify signatures with --raw ssh' '
+ test_config gpg.ssh.allowedSignersFile "${GPGSSH_ALLOWED_SIGNERS}" &&
+ git verify-tag --raw sixth-signed 2>actual &&
+ grep "${GPGSSH_GOOD_SIGNATURE_TRUSTED}" actual &&
+ ! grep "${GPGSSH_BAD_SIGNATURE}" actual &&
+ echo sixth-signed OK
+'
+
+test_expect_success GPGSSH 'verify multiple tags ssh' '
+ test_config gpg.ssh.allowedSignersFile "${GPGSSH_ALLOWED_SIGNERS}" &&
+ tags="seventh-signed sixth-signed" &&
+ for i in $tags
+ do
+ git verify-tag -v --raw $i || return 1
+ done >expect.stdout 2>expect.stderr.1 &&
+ grep "^${GPGSSH_GOOD_SIGNATURE_TRUSTED}" <expect.stderr.1 >expect.stderr &&
+ git verify-tag -v --raw $tags >actual.stdout 2>actual.stderr.1 &&
+ grep "^${GPGSSH_GOOD_SIGNATURE_TRUSTED}" <actual.stderr.1 >actual.stderr &&
+ test_cmp expect.stdout actual.stdout &&
+ test_cmp expect.stderr actual.stderr
+'
+
+test_expect_success GPGSSH 'verifying tag with --format - ssh' '
+ test_config gpg.ssh.allowedSignersFile "${GPGSSH_ALLOWED_SIGNERS}" &&
+ cat >expect <<-\EOF &&
+ tagname : fourth-signed
+ EOF
+ git verify-tag --format="tagname : %(tag)" "fourth-signed" >actual &&
+ test_cmp expect actual
+'
+
+test_expect_success GPGSSH 'verifying a forged tag with --format should fail silently - ssh' '
+ test_must_fail git verify-tag --format="tagname : %(tag)" $(cat forged1.tag) >actual-forged &&
+ test_must_be_empty actual-forged
+'
+
+test_done
--
gitgitgadget
Fabian Stelzer via GitGitGadget <gitgitgadget@gmail.com>