git/t/t5534-push-signed.sh
Jonathan Tan cbaf82cc6b receive-pack: verify push options in cert
In commit f6a4e61 ("push: accept push options", 2016-07-14), send-pack
was taught to include push options both within the signed cert (if the
push is a signed push) and outside the signed cert; however,
receive-pack ignores push options within the cert, only handling push
options outside the cert.

Teach receive-pack, in the case that push options are provided for a
signed push, to verify that the push options both within the cert and
outside the cert are consistent.

This sets in stone the requirement that send-pack redundantly send its
push options in 2 places, but I think that this is better than the
alternatives. Sending push options only within the cert is
backwards-incompatible with existing Git servers (which read push
options only from outside the cert), and sending push options only
outside the cert means that the push options are not signed for.

Signed-off-by: Jonathan Tan <jonathantanmy@google.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2017-05-10 13:18:28 +09:00

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#!/bin/sh
test_description='signed push'
. ./test-lib.sh
. "$TEST_DIRECTORY"/lib-gpg.sh
prepare_dst () {
rm -fr dst &&
test_create_repo dst &&
git push dst master:noop master:ff master:noff
}
test_expect_success setup '
# master, ff and noff branches pointing at the same commit
test_tick &&
git commit --allow-empty -m initial &&
git checkout -b noop &&
git checkout -b ff &&
git checkout -b noff &&
# noop stays the same, ff advances, noff rewrites
test_tick &&
git commit --allow-empty --amend -m rewritten &&
git checkout ff &&
test_tick &&
git commit --allow-empty -m second
'
test_expect_success 'unsigned push does not send push certificate' '
prepare_dst &&
mkdir -p dst/.git/hooks &&
write_script dst/.git/hooks/post-receive <<-\EOF &&
# discard the update list
cat >/dev/null
# record the push certificate
if test -n "${GIT_PUSH_CERT-}"
then
git cat-file blob $GIT_PUSH_CERT >../push-cert
fi
EOF
git push dst noop ff +noff &&
! test -f dst/push-cert
'
test_expect_success 'talking with a receiver without push certificate support' '
prepare_dst &&
mkdir -p dst/.git/hooks &&
write_script dst/.git/hooks/post-receive <<-\EOF &&
# discard the update list
cat >/dev/null
# record the push certificate
if test -n "${GIT_PUSH_CERT-}"
then
git cat-file blob $GIT_PUSH_CERT >../push-cert
fi
EOF
git push dst noop ff +noff &&
! test -f dst/push-cert
'
test_expect_success 'push --signed fails with a receiver without push certificate support' '
prepare_dst &&
mkdir -p dst/.git/hooks &&
test_must_fail git push --signed dst noop ff +noff 2>err &&
test_i18ngrep "the receiving end does not support" err
'
test_expect_success GPG 'no certificate for a signed push with no update' '
prepare_dst &&
mkdir -p dst/.git/hooks &&
write_script dst/.git/hooks/post-receive <<-\EOF &&
if test -n "${GIT_PUSH_CERT-}"
then
git cat-file blob $GIT_PUSH_CERT >../push-cert
fi
EOF
git push dst noop &&
! test -f dst/push-cert
'
test_expect_success GPG 'signed push sends push certificate' '
prepare_dst &&
mkdir -p dst/.git/hooks &&
git -C dst config receive.certnonceseed sekrit &&
write_script dst/.git/hooks/post-receive <<-\EOF &&
# discard the update list
cat >/dev/null
# record the push certificate
if test -n "${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
git push --signed dst noop ff +noff &&
(
cat <<-\EOF &&
SIGNER=C O Mitter <committer@example.com>
KEY=13B6F51ECDDE430D
STATUS=G
NONCE_STATUS=OK
EOF
sed -n -e "s/^nonce /NONCE=/p" -e "/^$/q" dst/push-cert
) >expect &&
grep "$(git rev-parse noop ff) refs/heads/ff" dst/push-cert &&
grep "$(git rev-parse noop noff) refs/heads/noff" dst/push-cert &&
test_cmp expect dst/push-cert-status
'
test_expect_success GPG 'inconsistent push options in signed push not allowed' '
# First, invoke receive-pack with dummy input to obtain its preamble.
prepare_dst &&
git -C dst config receive.certnonceseed sekrit &&
git -C dst config receive.advertisepushoptions 1 &&
printf xxxx | test_might_fail git receive-pack dst >preamble &&
# Then, invoke push. Simulate a receive-pack that sends the preamble we
# obtained, followed by a dummy packet.
write_script myscript <<-\EOF &&
cat preamble &&
printf xxxx &&
cat >push
EOF
test_might_fail git push --push-option="foo" --push-option="bar" \
--receive-pack="\"$(pwd)/myscript\"" --signed dst --delete ff &&
# Replay the push output on a fresh dst, checking that ff is truly
# deleted.
prepare_dst &&
git -C dst config receive.certnonceseed sekrit &&
git -C dst config receive.advertisepushoptions 1 &&
git receive-pack dst <push &&
test_must_fail git -C dst rev-parse ff &&
# Tweak the push output to make the push option outside the cert
# different, then replay it on a fresh dst, checking that ff is not
# deleted.
perl -pe "s/([^ ])bar/\$1baz/" push >push.tweak &&
prepare_dst &&
git -C dst config receive.certnonceseed sekrit &&
git -C dst config receive.advertisepushoptions 1 &&
git receive-pack dst <push.tweak >out &&
git -C dst rev-parse ff &&
grep "inconsistent push options" out
'
test_expect_success GPG 'fail without key and heed user.signingkey' '
prepare_dst &&
mkdir -p dst/.git/hooks &&
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
unset GIT_COMMITTER_EMAIL &&
git config user.email hasnokey@nowhere.com &&
test_must_fail git push --signed dst noop ff +noff &&
git config user.signingkey committer@example.com &&
git push --signed dst noop ff +noff &&
(
cat <<-\EOF &&
SIGNER=C O Mitter <committer@example.com>
KEY=13B6F51ECDDE430D
STATUS=G
NONCE_STATUS=OK
EOF
sed -n -e "s/^nonce /NONCE=/p" -e "/^$/q" dst/push-cert
) >expect &&
grep "$(git rev-parse noop ff) refs/heads/ff" dst/push-cert &&
grep "$(git rev-parse noop noff) refs/heads/noff" dst/push-cert &&
test_cmp expect dst/push-cert-status
'
test_done