diff options
Diffstat (limited to 't/t7510-signed-commit.sh')
| -rwxr-xr-x | t/t7510-signed-commit.sh | 390 |
1 files changed, 390 insertions, 0 deletions
diff --git a/t/t7510-signed-commit.sh b/t/t7510-signed-commit.sh new file mode 100755 index 0000000..8593b7e --- /dev/null +++ b/t/t7510-signed-commit.sh @@ -0,0 +1,390 @@ +#!/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 -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 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" $(cat double-commit.commit) >actual && + test_cmp expect actual +' + + +# NEEDSWORK: This test relies on the test_tick commit/author dates from the first +# 'create signed commits' test even though it creates its own +test_expect_success GPG 'verify-commit verifies multiply signed commits' ' + git init multiply-signed && + cd multiply-signed && + test_commit first && + echo 1 >second && + git add second && + tree=$(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_done |