From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.2 (2018-09-13) on dcvr.yhbt.net X-Spam-Level: X-Spam-ASN: AS53758 23.128.96.0/24 X-Spam-Status: No, score=-3.7 required=3.0 tests=AWL,BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,FREEMAIL_FORGED_FROMDOMAIN,FREEMAIL_FROM, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,RCVD_IN_DNSWL_NONE, SPF_HELO_PASS,SPF_PASS shortcircuit=no autolearn=ham autolearn_force=no version=3.4.2 Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by dcvr.yhbt.net (Postfix) with ESMTP id E829E1FA13 for ; Mon, 19 Jul 2021 13:35:56 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S238649AbhGSMwy (ORCPT ); Mon, 19 Jul 2021 08:52:54 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:38674 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S238598AbhGSMwr (ORCPT ); Mon, 19 Jul 2021 08:52:47 -0400 Received: from mail-wm1-x329.google.com (mail-wm1-x329.google.com [IPv6:2a00:1450:4864:20::329]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 63C5DC0613DB for ; Mon, 19 Jul 2021 05:55:08 -0700 (PDT) Received: by mail-wm1-x329.google.com with SMTP id m11-20020a05600c3b0bb0290228f19cb433so12888712wms.0 for ; Mon, 19 Jul 2021 06:33:25 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=message-id:in-reply-to:references:from:date:subject:fcc :content-transfer-encoding:mime-version:to:cc; bh=z+mO5JuBpGXWq0uRbvvD9QTbCBqEbt+K+p8CF+lyfoY=; b=MD/McHBSRskdPkBwrOHQGfhiu+iDryZkCA6PPx0UwSs7z6iduy4lOhnB+isW/L1pSN 49igUCJz3VPXi+i9waap3zpYwqCHmNMALQPYP3n9G9F4fU2H7EXkBkXwGpaX4JMjjVG9 sjJcPUhpuGWYoIubRcEm6UTa6cDddNxLAxvFzMh2kig6ZhcukOUSTaHBgdK73Xb6W0oE UgKqoarer5CLpGdNbWutt7TwPrcnLnDuRvWtKKYuQ/zr/795FSniE2OJB8G7Ctidf8Z/ +y6Q+FAzmZGkP+Vb4dfYB48XRyq2AJvgwTXmeGu25wbu1KDIc49fbt5QGgJGuQbOQfyy /IQg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:message-id:in-reply-to:references:from:date :subject:fcc:content-transfer-encoding:mime-version:to:cc; bh=z+mO5JuBpGXWq0uRbvvD9QTbCBqEbt+K+p8CF+lyfoY=; b=Wm8l6ZPWxm1ptEm4riPzSLEtvp2RBj6Rc7JZq3Id+LzQuVp2VKpMK28PDmPJKJv1pG 1WfxkfLR+69iMa6i3dpiGu9nHvhOamsPC4jmNkgqGWiSnxVif9dfog1spPBWDMCR8Y7x Q2yMsWAa4lHm7Vy8KE9vQQgebmQj+4VUAirpQjd8ofy/WlsrqIIyvawMwj3PZNY5660o GNsYDm/7/Bds0jfpMJOJYtN7Z5Gfa08FnOwti+Z7h9/6UTsqrvqO83Cz8u+ks32MSjr1 E0dg1FNRIJ3LfiQC6gLsoorMCrR9OcRIzAhfmnbOa4GNX4P1f++WB9w/SmEYUJbv0CWJ uajw== X-Gm-Message-State: AOAM531HVNfQCf/lAcoX5UTGbegdDl+d2988pOf0g5gzIAinTwkS8beQ 3WpWVGxx48qKZ7qWLF3etbpl+VPF2lU= X-Google-Smtp-Source: ABdhPJxJ3pYxeoAtcsV5bKjcoOmynvF/ZJMPk0gZL9+z0Z+ret4kkSGu0/pXDfFphst84PHa0hzMlQ== X-Received: by 2002:a7b:c193:: with SMTP id y19mr32609425wmi.86.1626701604224; Mon, 19 Jul 2021 06:33:24 -0700 (PDT) Received: from [127.0.0.1] ([13.74.141.28]) by smtp.gmail.com with ESMTPSA id g3sm20494308wru.95.2021.07.19.06.33.23 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 19 Jul 2021 06:33:23 -0700 (PDT) Message-Id: <4dc5572083b4e08f704f06af8ad4649335a96581.1626701596.git.gitgitgadget@gmail.com> In-Reply-To: References: From: "Fabian Stelzer via GitGitGadget" Date: Mon, 19 Jul 2021 13:33:14 +0000 Subject: [PATCH v4 7/9] ssh signing: duplicate t7510 tests for commits Fcc: Sent Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit MIME-Version: 1.0 To: git@vger.kernel.org Cc: Han-Wen Nienhuys , Fabian Stelzer , "brian m. carlson" , "Randall S. Becker" , Bagas Sanjaya , Hans Jerry Illikainen , =?UTF-8?Q?=C3=86var_Arnfj=C3=B6r=C3=B0?= Bjarmason , Felipe Contreras , Eric Sunshine , Gwyneth Morgan , Fabian Stelzer , Fabian Stelzer Precedence: bulk List-ID: X-Mailing-List: git@vger.kernel.org From: Fabian Stelzer Signed-off-by: Fabian Stelzer --- t/t7527-signed-commit-ssh.sh | 398 +++++++++++++++++++++++++++++++++++ 1 file changed, 398 insertions(+) create mode 100755 t/t7527-signed-commit-ssh.sh diff --git a/t/t7527-signed-commit-ssh.sh b/t/t7527-signed-commit-ssh.sh new file mode 100755 index 00000000000..e2c48f69e6d --- /dev/null +++ b/t/t7527-signed-commit-ssh.sh @@ -0,0 +1,398 @@ +#!/bin/sh + +test_description='ssh 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 GPGSSH 'create signed commits' ' + test_oid_cache <<-\EOF && + header sha1:gpgsig + header sha256:gpgsig-sha256 + EOF + + test_when_finished "test_unconfig commit.gpgsign" && + test_config gpg.format ssh && + test_config user.signingkey "${SIGNING_KEY_PRIMARY}" && + + echo 1 >file && git add file && + test_tick && git commit -S -m initial && + git tag initial && + git branch side && + + echo 2 >file && test_tick && git commit -a -S -m second && + git tag second && + + git checkout side && + echo 3 >elif && git add elif && + test_tick && git commit -m "third on side" && + + git checkout main && + test_tick && git merge -S side && + git tag merge && + + echo 4 >file && test_tick && git commit -a -m "fourth unsigned" && + git tag fourth-unsigned && + + test_tick && git commit --amend -S -m "fourth signed" && + git tag fourth-signed && + + git config commit.gpgsign true && + echo 5 >file && test_tick && git commit -a -m "fifth signed" && + git tag fifth-signed && + + git config commit.gpgsign false && + echo 6 >file && test_tick && git commit -a -m "sixth" && + git tag sixth-unsigned && + + git config commit.gpgsign true && + echo 7 >file && test_tick && git commit -a -m "seventh" --no-gpg-sign && + git tag seventh-unsigned && + + test_tick && git rebase -f HEAD^^ && git tag sixth-signed HEAD^ && + git tag seventh-signed && + + echo 8 >file && test_tick && git commit -a -m eighth -S"${SIGNING_KEY_UNTRUSTED}" && + 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[=] must sign. + echo 11 | git commit-tree --gpg-sign HEAD^{tree} >oid && + test_line_count = 1 oid && + git tag eleventh-signed $(cat oid) && + echo 12 | git commit-tree --gpg-sign="${SIGNING_KEY_UNTRUSTED}" HEAD^{tree} >oid && + test_line_count = 1 oid && + git tag twelfth-signed-alt $(cat oid) +' + +test_expect_success GPGSSH 'verify and show signatures' ' + test_config gpg.ssh.allowedSignersFile "${SIGNING_ALLOWED_SIGNERS}" && + test_config gpg.mintrustlevel UNDEFINED && + ( + 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_TRUSTED}" actual && + ! grep "${BAD_SIGNATURE}" 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_TRUSTED}" actual && + ! grep "${BAD_SIGNATURE}" 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_UNTRUSTED}" actual && + ! grep "${BAD_SIGNATURE}" actual && + grep "${KEY_NOT_TRUSTED}" actual && + echo $commit OK || exit 1 + done + ) +' + +test_expect_success GPGSSH 'verify-commit exits success on untrusted signature' ' + test_config gpg.ssh.allowedSignersFile "${SIGNING_ALLOWED_SIGNERS}" && + git verify-commit eighth-signed-alt 2>actual && + grep "${GOOD_SIGNATURE_UNTRUSTED}" actual && + ! grep "${BAD_SIGNATURE}" actual && + grep "${KEY_NOT_TRUSTED}" actual +' + +test_expect_success GPGSSH 'verify-commit exits success with matching minTrustLevel' ' + test_config gpg.ssh.allowedSignersFile "${SIGNING_ALLOWED_SIGNERS}" && + test_config gpg.minTrustLevel fully && + git verify-commit sixth-signed +' + +test_expect_success GPGSSH 'verify-commit exits success with low minTrustLevel' ' + test_config gpg.ssh.allowedSignersFile "${SIGNING_ALLOWED_SIGNERS}" && + test_config gpg.minTrustLevel marginal && + git verify-commit sixth-signed +' + +test_expect_success GPGSSH 'verify-commit exits failure with high minTrustLevel' ' + test_config gpg.minTrustLevel ultimate && + test_must_fail git verify-commit eighth-signed-alt +' + +test_expect_success GPGSSH 'verify signatures with --raw' ' + test_config gpg.ssh.allowedSignersFile "${SIGNING_ALLOWED_SIGNERS}" && + ( + for commit in initial second merge fourth-signed fifth-signed sixth-signed seventh-signed + do + git verify-commit --raw $commit 2>actual && + grep "${GOOD_SIGNATURE_TRUSTED}" actual && + ! grep "${BAD_SIGNATURE}" 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 $commit 2>actual && + ! grep "${GOOD_SIGNATURE_TRUSTED}" actual && + ! grep "${BAD_SIGNATURE}" actual && + echo $commit OK || exit 1 + done + ) && + ( + for commit in eighth-signed-alt + do + git verify-commit --raw $commit 2>actual && + grep "${GOOD_SIGNATURE_UNTRUSTED}" actual && + ! grep "${BAD_SIGNATURE}" actual && + echo $commit OK || exit 1 + done + ) +' + +test_expect_success GPGSSH 'proper header is used for hash algorithm' ' + git cat-file commit fourth-signed >output && + grep "^$(test_oid header) -----BEGIN SSH SIGNATURE-----" output +' + +test_expect_success GPGSSH 'show signed commit with signature' ' + test_config gpg.ssh.allowedSignersFile "${SIGNING_ALLOWED_SIGNERS}" && + git show -s initial >commit && + git show -s --show-signature initial >show && + git verify-commit -v initial >verify.1 2>verify.2 && + git cat-file commit initial >cat && + grep -v -e "${GOOD_SIGNATURE_TRUSTED}" -e "Warning: " show >show.commit && + grep -e "${GOOD_SIGNATURE_TRUSTED}" -e "Warning: " show >show.gpg && + grep -v "^ " cat | grep -v "^gpgsig.* " >cat.commit && + test_cmp show.commit commit && + test_cmp show.gpg verify.2 && + test_cmp cat.commit verify.1 +' + +test_expect_success GPGSSH 'detect fudged signature' ' + test_config gpg.ssh.allowedSignersFile "${SIGNING_ALLOWED_SIGNERS}" && + 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}" actual1 && + ! grep "${GOOD_SIGNATURE_TRUSTED}" actual1 && + ! grep "${GOOD_SIGNATURE_UNTRUSTED}" actual1 +' + +test_expect_success GPGSSH 'detect fudged signature with NUL' ' + test_config gpg.ssh.allowedSignersFile "${SIGNING_ALLOWED_SIGNERS}" && + 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}" actual2 && + ! grep "${GOOD_SIGNATURE_TRUSTED}" actual2 +' + +test_expect_success GPGSSH 'amending already signed commit' ' + test_config gpg.format ssh && + test_config user.signingkey "${SIGNING_KEY_PRIMARY}" && + test_config gpg.ssh.allowedSignersFile "${SIGNING_ALLOWED_SIGNERS}" && + git checkout fourth-signed^0 && + git commit --amend -S --no-edit && + git verify-commit HEAD && + git show -s --show-signature HEAD >actual && + grep "${GOOD_SIGNATURE_TRUSTED}" actual && + ! grep "${BAD_SIGNATURE}" actual +' + +test_expect_success GPGSSH 'show good signature with custom format' ' + test_config gpg.ssh.allowedSignersFile "${SIGNING_ALLOWED_SIGNERS}" && + FINGERPRINT=$(ssh-keygen -lf "${SIGNING_KEY_PRIMARY}" | awk "{print \$2;}") && + cat >expect.tmpl <<-\EOF && + G + FINGERPRINT + principal with number 1 + FINGERPRINT + + EOF + sed "s|FINGERPRINT|$FINGERPRINT|g" expect.tmpl >expect && + git log -1 --format="%G?%n%GK%n%GS%n%GF%n%GP" sixth-signed >actual && + test_cmp expect actual +' + +test_expect_success GPGSSH 'show bad signature with custom format' ' + test_config gpg.ssh.allowedSignersFile "${SIGNING_ALLOWED_SIGNERS}" && + cat >expect <<-\EOF && + B + + + + + EOF + git log -1 --format="%G?%n%GK%n%GS%n%GF%n%GP" $(cat forged1.commit) >actual && + test_cmp expect actual +' + +test_expect_success GPGSSH 'show untrusted signature with custom format' ' + test_config gpg.ssh.allowedSignersFile "${SIGNING_ALLOWED_SIGNERS}" && + cat >expect.tmpl <<-\EOF && + U + FINGERPRINT + + FINGERPRINT + + EOF + git log -1 --format="%G?%n%GK%n%GS%n%GF%n%GP" eighth-signed-alt >actual && + FINGERPRINT=$(ssh-keygen -lf "${SIGNING_KEY_UNTRUSTED}" | awk "{print \$2;}") && + sed "s|FINGERPRINT|$FINGERPRINT|g" expect.tmpl >expect && + test_cmp expect actual +' + +test_expect_success GPGSSH 'show untrusted signature with undefined trust level' ' + test_config gpg.ssh.allowedSignersFile "${SIGNING_ALLOWED_SIGNERS}" && + cat >expect.tmpl <<-\EOF && + undefined + FINGERPRINT + + FINGERPRINT + + EOF + git log -1 --format="%GT%n%GK%n%GS%n%GF%n%GP" eighth-signed-alt >actual && + FINGERPRINT=$(ssh-keygen -lf "${SIGNING_KEY_UNTRUSTED}" | awk "{print \$2;}") && + sed "s|FINGERPRINT|$FINGERPRINT|g" expect.tmpl >expect && + test_cmp expect actual +' + +test_expect_success GPGSSH 'show untrusted signature with ultimate trust level' ' + test_config gpg.ssh.allowedSignersFile "${SIGNING_ALLOWED_SIGNERS}" && + cat >expect.tmpl <<-\EOF && + fully + FINGERPRINT + principal with number 1 + FINGERPRINT + + EOF + git log -1 --format="%GT%n%GK%n%GS%n%GF%n%GP" sixth-signed >actual && + FINGERPRINT=$(ssh-keygen -lf "${SIGNING_KEY_PRIMARY}" | awk "{print \$2;}") && + sed "s|FINGERPRINT|$FINGERPRINT|g" expect.tmpl >expect && + test_cmp expect actual +' + +test_expect_success GPGSSH 'show lack of signature with custom format' ' + cat >expect <<-\EOF && + N + + + + + EOF + git log -1 --format="%G?%n%GK%n%GS%n%GF%n%GP" seventh-unsigned >actual && + test_cmp expect actual +' + +test_expect_success GPGSSH 'log.showsignature behaves like --show-signature' ' + test_config gpg.ssh.allowedSignersFile "${SIGNING_ALLOWED_SIGNERS}" && + test_config log.showsignature true && + git show initial >actual && + grep "${GOOD_SIGNATURE_TRUSTED}" actual +' + +test_expect_success GPGSSH 'check config gpg.format values' ' + test_config gpg.format ssh && + test_config user.signingkey "${SIGNING_KEY_PRIMARY}" && + test_config gpg.format ssh && + git commit -S --amend -m "success" && + test_config gpg.format OpEnPgP && + test_must_fail git commit -S --amend -m "fail" +' + +test_expect_failure GPGSSH 'detect fudged commit with double signature (TODO)' ' + 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_failure GPGSSH 'show double signature with custom format (TODO)' ' + cat >expect <<-\EOF && + E + + + + + EOF + git log -1 --format="%G?%n%GK%n%GS%n%GF%n%GP" $(cat double-commit.commit) >actual && + test_cmp expect actual +' + + +test_expect_failure GPGSSH 'verify-commit verifies multiply signed commits (TODO)' ' + git init multiply-signed && + cd multiply-signed && + test_commit first && + echo 1 >second && + git add second && + tree=$(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 $parent + Qauthor A U Thor 1112912653 -0700 + Qcommitter C O Mitter 1112912653 -0700 + Qgpgsig -----BEGIN PGP SIGNATURE----- + QZ + Q iHQEABECADQWIQRz11h0S+chaY7FTocTtvUezd5DDQUCX/uBDRYcY29tbWl0dGVy + Q QGV4YW1wbGUuY29tAAoJEBO29R7N3kMNd+8AoK1I8mhLHviPH+q2I5fIVgPsEtYC + Q AKCTqBh+VabJceXcGIZuF0Ry+udbBQ== + Q =tQ0N + Q -----END PGP SIGNATURE----- + Qgpgsig-sha256 -----BEGIN PGP SIGNATURE----- + QZ + Q iHQEABECADQWIQRz11h0S+chaY7FTocTtvUezd5DDQUCX/uBIBYcY29tbWl0dGVy + Q QGV4YW1wbGUuY29tAAoJEBO29R7N3kMN/NEAn0XO9RYSBj2dFyozi0JKSbssYMtO + Q AJwKCQ1BQOtuwz//IjU8TiS+6S4iUw== + Q =pIwP + Q -----END PGP SIGNATURE----- + Q + Qsecond + EOF + head=$(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 -- gitgitgadget