1#!/bin/sh 2 3test_description='signed commit tests' 4GIT_TEST_DEFAULT_INITIAL_BRANCH_NAME=main 5export GIT_TEST_DEFAULT_INITIAL_BRANCH_NAME 6 7. ./test-lib.sh 8GNUPGHOME_NOT_USED=$GNUPGHOME 9. "$TEST_DIRECTORY/lib-gpg.sh" 10 11test_expect_success GPG 'create signed commits' ' 12 test_oid_cache <<-\EOF && 13 header sha1:gpgsig 14 header sha256:gpgsig-sha256 15 EOF 16 17 test_when_finished "test_unconfig commit.gpgsign" && 18 19 echo 1 >file && git add file && 20 test_tick && git commit -S -m initial && 21 git tag initial && 22 git branch side && 23 24 echo 2 >file && test_tick && git commit -a -S -m second && 25 git tag second && 26 27 git checkout side && 28 echo 3 >elif && git add elif && 29 test_tick && git commit -m "third on side" && 30 31 git checkout main && 32 test_tick && git merge -S side && 33 git tag merge && 34 35 echo 4 >file && test_tick && git commit -a -m "fourth unsigned" && 36 git tag fourth-unsigned && 37 38 test_tick && git commit --amend -S -m "fourth signed" && 39 git tag fourth-signed && 40 41 git config commit.gpgsign true && 42 echo 5 >file && test_tick && git commit -a -m "fifth signed" && 43 git tag fifth-signed && 44 45 git config commit.gpgsign false && 46 echo 6 >file && test_tick && git commit -a -m "sixth" && 47 git tag sixth-unsigned && 48 49 git config commit.gpgsign true && 50 echo 7 >file && test_tick && git commit -a -m "seventh" --no-gpg-sign && 51 git tag seventh-unsigned && 52 53 test_tick && git rebase -f HEAD^^ && git tag sixth-signed HEAD^ && 54 git tag seventh-signed && 55 56 echo 8 >file && test_tick && git commit -a -m eighth -SB7227189 && 57 git tag eighth-signed-alt && 58 59 # commit.gpgsign is still on but this must not be signed 60 echo 9 | git commit-tree HEAD^{tree} >oid && 61 test_line_count = 1 oid && 62 git tag ninth-unsigned $(cat oid) && 63 # explicit -S of course must sign. 64 echo 10 | git commit-tree -S HEAD^{tree} >oid && 65 test_line_count = 1 oid && 66 git tag tenth-signed $(cat oid) && 67 68 # --gpg-sign[=<key-id>] must sign. 69 echo 11 | git commit-tree --gpg-sign HEAD^{tree} >oid && 70 test_line_count = 1 oid && 71 git tag eleventh-signed $(cat oid) && 72 echo 12 | git commit-tree --gpg-sign=B7227189 HEAD^{tree} >oid && 73 test_line_count = 1 oid && 74 git tag twelfth-signed-alt $(cat oid) && 75 76 cat >keydetails <<-\EOF && 77 Key-Type: RSA 78 Key-Length: 2048 79 Subkey-Type: RSA 80 Subkey-Length: 2048 81 Name-Real: Unknown User 82 Name-Email: unknown@git.com 83 Expire-Date: 0 84 %no-ask-passphrase 85 %no-protection 86 EOF 87 gpg --batch --gen-key keydetails && 88 echo 13 >file && git commit -a -S"unknown@git.com" -m thirteenth && 89 git tag thirteenth-signed && 90 DELETE_FINGERPRINT=$(gpg -K --with-colons --fingerprint --batch unknown@git.com | grep "^fpr" | head -n 1 | awk -F ":" "{print \$10;}") && 91 gpg --batch --yes --delete-secret-keys $DELETE_FINGERPRINT && 92 gpg --batch --yes --delete-keys unknown@git.com 93' 94 95test_expect_success GPG 'verify and show signatures' ' 96 ( 97 for commit in initial second merge fourth-signed \ 98 fifth-signed sixth-signed seventh-signed tenth-signed \ 99 eleventh-signed 100 do 101 git verify-commit $commit && 102 git show --pretty=short --show-signature $commit >actual && 103 grep "Good signature from" actual && 104 ! grep "BAD signature from" actual && 105 echo $commit OK || exit 1 106 done 107 ) && 108 ( 109 for commit in merge^2 fourth-unsigned sixth-unsigned \ 110 seventh-unsigned ninth-unsigned 111 do 112 test_must_fail git verify-commit $commit && 113 git show --pretty=short --show-signature $commit >actual && 114 ! grep "Good signature from" actual && 115 ! grep "BAD signature from" actual && 116 echo $commit OK || exit 1 117 done 118 ) && 119 ( 120 for commit in eighth-signed-alt twelfth-signed-alt 121 do 122 git show --pretty=short --show-signature $commit >actual && 123 grep "Good signature from" actual && 124 ! grep "BAD signature from" actual && 125 grep "not certified" actual && 126 echo $commit OK || exit 1 127 done 128 ) 129' 130 131test_expect_success GPG 'verify-commit exits failure on unknown signature' ' 132 test_must_fail git verify-commit thirteenth-signed 2>actual && 133 ! grep "Good signature from" actual && 134 ! grep "BAD signature from" actual && 135 grep -q -F -e "No public key" -e "public key not found" actual 136' 137 138test_expect_success GPG 'verify-commit exits success on untrusted signature' ' 139 git verify-commit eighth-signed-alt 2>actual && 140 grep "Good signature from" actual && 141 ! grep "BAD signature from" actual && 142 grep "not certified" actual 143' 144 145test_expect_success GPG 'verify-commit exits success with matching minTrustLevel' ' 146 test_config gpg.minTrustLevel ultimate && 147 git verify-commit sixth-signed 148' 149 150test_expect_success GPG 'verify-commit exits success with low minTrustLevel' ' 151 test_config gpg.minTrustLevel fully && 152 git verify-commit sixth-signed 153' 154 155test_expect_success GPG 'verify-commit exits failure with high minTrustLevel' ' 156 test_config gpg.minTrustLevel ultimate && 157 test_must_fail git verify-commit eighth-signed-alt 158' 159 160test_expect_success GPG 'verify signatures with --raw' ' 161 ( 162 for commit in initial second merge fourth-signed fifth-signed sixth-signed seventh-signed 163 do 164 git verify-commit --raw $commit 2>actual && 165 grep "GOODSIG" actual && 166 ! grep "BADSIG" actual && 167 echo $commit OK || exit 1 168 done 169 ) && 170 ( 171 for commit in merge^2 fourth-unsigned sixth-unsigned seventh-unsigned 172 do 173 test_must_fail git verify-commit --raw $commit 2>actual && 174 ! grep "GOODSIG" actual && 175 ! grep "BADSIG" actual && 176 echo $commit OK || exit 1 177 done 178 ) && 179 ( 180 for commit in eighth-signed-alt 181 do 182 git verify-commit --raw $commit 2>actual && 183 grep "GOODSIG" actual && 184 ! grep "BADSIG" actual && 185 grep "TRUST_UNDEFINED" actual && 186 echo $commit OK || exit 1 187 done 188 ) 189' 190 191test_expect_success GPG 'proper header is used for hash algorithm' ' 192 git cat-file commit fourth-signed >output && 193 grep "^$(test_oid header) -----BEGIN PGP SIGNATURE-----" output 194' 195 196test_expect_success GPG 'show signed commit with signature' ' 197 git show -s initial >commit && 198 git show -s --show-signature initial >show && 199 git verify-commit -v initial >verify.1 2>verify.2 && 200 git cat-file commit initial >cat && 201 grep -v -e "gpg: " -e "Warning: " show >show.commit && 202 grep -e "gpg: " -e "Warning: " show >show.gpg && 203 grep -v "^ " cat | grep -v "^gpgsig.* " >cat.commit && 204 test_cmp show.commit commit && 205 test_cmp show.gpg verify.2 && 206 test_cmp cat.commit verify.1 207' 208 209test_expect_success GPG 'detect fudged signature' ' 210 git cat-file commit seventh-signed >raw && 211 sed -e "s/^seventh/7th forged/" raw >forged1 && 212 git hash-object -w -t commit forged1 >forged1.commit && 213 test_must_fail git verify-commit $(cat forged1.commit) && 214 git show --pretty=short --show-signature $(cat forged1.commit) >actual1 && 215 grep "BAD signature from" actual1 && 216 ! grep "Good signature from" actual1 217' 218 219test_expect_success GPG 'detect fudged signature with NUL' ' 220 git cat-file commit seventh-signed >raw && 221 cat raw >forged2 && 222 echo Qwik | tr "Q" "\000" >>forged2 && 223 git hash-object -w -t commit forged2 >forged2.commit && 224 test_must_fail git verify-commit $(cat forged2.commit) && 225 git show --pretty=short --show-signature $(cat forged2.commit) >actual2 && 226 grep "BAD signature from" actual2 && 227 ! grep "Good signature from" actual2 228' 229 230test_expect_success GPG 'amending already signed commit' ' 231 git checkout fourth-signed^0 && 232 git commit --amend -S --no-edit && 233 git verify-commit HEAD && 234 git show -s --show-signature HEAD >actual && 235 grep "Good signature from" actual && 236 ! grep "BAD signature from" actual 237' 238 239test_expect_success GPG 'show good signature with custom format' ' 240 cat >expect <<-\EOF && 241 G 242 13B6F51ECDDE430D 243 C O Mitter <committer@example.com> 244 73D758744BE721698EC54E8713B6F51ECDDE430D 245 73D758744BE721698EC54E8713B6F51ECDDE430D 246 EOF 247 git log -1 --format="%G?%n%GK%n%GS%n%GF%n%GP" sixth-signed >actual && 248 test_cmp expect actual 249' 250 251test_expect_success GPG 'show bad signature with custom format' ' 252 cat >expect <<-\EOF && 253 B 254 13B6F51ECDDE430D 255 C O Mitter <committer@example.com> 256 257 258 EOF 259 git log -1 --format="%G?%n%GK%n%GS%n%GF%n%GP" $(cat forged1.commit) >actual && 260 test_cmp expect actual 261' 262 263test_expect_success GPG 'show untrusted signature with custom format' ' 264 cat >expect <<-\EOF && 265 U 266 65A0EEA02E30CAD7 267 Eris Discordia <discord@example.net> 268 F8364A59E07FFE9F4D63005A65A0EEA02E30CAD7 269 D4BE22311AD3131E5EDA29A461092E85B7227189 270 EOF 271 git log -1 --format="%G?%n%GK%n%GS%n%GF%n%GP" eighth-signed-alt >actual && 272 test_cmp expect actual 273' 274 275test_expect_success GPG 'show untrusted signature with undefined trust level' ' 276 cat >expect <<-\EOF && 277 undefined 278 65A0EEA02E30CAD7 279 Eris Discordia <discord@example.net> 280 F8364A59E07FFE9F4D63005A65A0EEA02E30CAD7 281 D4BE22311AD3131E5EDA29A461092E85B7227189 282 EOF 283 git log -1 --format="%GT%n%GK%n%GS%n%GF%n%GP" eighth-signed-alt >actual && 284 test_cmp expect actual 285' 286 287test_expect_success GPG 'show untrusted signature with ultimate trust level' ' 288 cat >expect <<-\EOF && 289 ultimate 290 13B6F51ECDDE430D 291 C O Mitter <committer@example.com> 292 73D758744BE721698EC54E8713B6F51ECDDE430D 293 73D758744BE721698EC54E8713B6F51ECDDE430D 294 EOF 295 git log -1 --format="%GT%n%GK%n%GS%n%GF%n%GP" sixth-signed >actual && 296 test_cmp expect actual 297' 298 299test_expect_success GPG 'show unknown signature with custom format' ' 300 cat >expect <<-\EOF && 301 E 302 65A0EEA02E30CAD7 303 304 305 306 EOF 307 GNUPGHOME="$GNUPGHOME_NOT_USED" git log -1 --format="%G?%n%GK%n%GS%n%GF%n%GP" eighth-signed-alt >actual && 308 test_cmp expect actual 309' 310 311test_expect_success GPG 'show lack of signature with custom format' ' 312 cat >expect <<-\EOF && 313 N 314 315 316 317 318 EOF 319 git log -1 --format="%G?%n%GK%n%GS%n%GF%n%GP" seventh-unsigned >actual && 320 test_cmp expect actual 321' 322 323test_expect_success GPG 'log.showsignature behaves like --show-signature' ' 324 test_config log.showsignature true && 325 git show initial >actual && 326 grep "gpg: Signature made" actual && 327 grep "gpg: Good signature" actual 328' 329 330test_expect_success GPG 'check config gpg.format values' ' 331 test_config gpg.format openpgp && 332 git commit -S --amend -m "success" && 333 test_config gpg.format OpEnPgP && 334 test_must_fail git commit -S --amend -m "fail" 335' 336 337test_expect_success GPG 'detect fudged commit with double signature' ' 338 sed -e "/gpgsig/,/END PGP/d" forged1 >double-base && 339 sed -n -e "/gpgsig/,/END PGP/p" forged1 | \ 340 sed -e "s/^$(test_oid header)//;s/^ //" | gpg --dearmor >double-sig1.sig && 341 gpg -o double-sig2.sig -u 29472784 --detach-sign double-base && 342 cat double-sig1.sig double-sig2.sig | gpg --enarmor >double-combined.asc && 343 sed -e "s/^\(-.*\)ARMORED FILE/\1SIGNATURE/;1s/^/$(test_oid header) /;2,\$s/^/ /" \ 344 double-combined.asc > double-gpgsig && 345 sed -e "/committer/r double-gpgsig" double-base >double-commit && 346 git hash-object -w -t commit double-commit >double-commit.commit && 347 test_must_fail git verify-commit $(cat double-commit.commit) && 348 git show --pretty=short --show-signature $(cat double-commit.commit) >double-actual && 349 grep "BAD signature from" double-actual && 350 grep "Good signature from" double-actual 351' 352 353test_expect_success GPG 'show double signature with custom format' ' 354 cat >expect <<-\EOF && 355 E 356 357 358 359 360 EOF 361 git log -1 --format="%G?%n%GK%n%GS%n%GF%n%GP" $(cat double-commit.commit) >actual && 362 test_cmp expect actual 363' 364 365 366# NEEDSWORK: This test relies on the test_tick commit/author dates from the first 367# 'create signed commits' test even though it creates its own 368test_expect_success GPG 'verify-commit verifies multiply signed commits' ' 369 git init multiply-signed && 370 cd multiply-signed && 371 test_commit first && 372 echo 1 >second && 373 git add second && 374 tree=$(git write-tree) && 375 parent=$(git rev-parse HEAD^{commit}) && 376 git commit --gpg-sign -m second && 377 git cat-file commit HEAD && 378 # Avoid trailing whitespace. 379 sed -e "s/^Q//" -e "s/^Z/ /" >commit <<-EOF && 380 Qtree $tree 381 Qparent $parent 382 Qauthor A U Thor <author@example.com> 1112912653 -0700 383 Qcommitter C O Mitter <committer@example.com> 1112912653 -0700 384 Qgpgsig -----BEGIN PGP SIGNATURE----- 385 QZ 386 Q iHQEABECADQWIQRz11h0S+chaY7FTocTtvUezd5DDQUCX/uBDRYcY29tbWl0dGVy 387 Q QGV4YW1wbGUuY29tAAoJEBO29R7N3kMNd+8AoK1I8mhLHviPH+q2I5fIVgPsEtYC 388 Q AKCTqBh+VabJceXcGIZuF0Ry+udbBQ== 389 Q =tQ0N 390 Q -----END PGP SIGNATURE----- 391 Qgpgsig-sha256 -----BEGIN PGP SIGNATURE----- 392 QZ 393 Q iHQEABECADQWIQRz11h0S+chaY7FTocTtvUezd5DDQUCX/uBIBYcY29tbWl0dGVy 394 Q QGV4YW1wbGUuY29tAAoJEBO29R7N3kMN/NEAn0XO9RYSBj2dFyozi0JKSbssYMtO 395 Q AJwKCQ1BQOtuwz//IjU8TiS+6S4iUw== 396 Q =pIwP 397 Q -----END PGP SIGNATURE----- 398 Q 399 Qsecond 400 EOF 401 head=$(git hash-object -t commit -w commit) && 402 git reset --hard $head && 403 git verify-commit $head 2>actual && 404 grep "Good signature from" actual && 405 ! grep "BAD signature from" actual 406' 407 408test_done 409