#!/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 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 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" $(cat double-commit.commit) >actual && test_cmp expect actual ' test_expect_success GPG 'verify-commit verifies multiply signed commits' ' git init multiply-signed && cd multiply-signed && test_commit first && echo 1 >second && git add second && tree=$(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