t/t1450-fsck.sh

   1 #!/bin/sh
   2
   3 test_description='git fsck random collection of tests
   4
   5 * (HEAD) B
   6 * (master) A
   7 '
   8
   9 . ./test-lib.sh
  10
  11 test_expect_success setup '
  12         git config gc.auto 0 &&
  13         git config i18n.commitencoding ISO-8859-1 &&
  14         test_commit A fileA one &&
  15         git config --unset i18n.commitencoding &&
  16         git checkout HEAD^0 &&
  17         test_commit B fileB two &&
  18         git tag -d A B &&
  19         git reflog expire --expire=now --all &&
  20         >empty
  21 '
  22
  23 test_expect_success 'loose objects borrowed from alternate are not missing' '
  24         mkdir another &&
  25         (
  26                 cd another &&
  27                 git init &&
  28                 echo ../../../.git/objects >.git/objects/info/alternates &&
  29                 test_commit C fileC one &&
  30                 git fsck --no-dangling >../actual 2>&1
  31         ) &&
  32         test_cmp empty actual
  33 '
  34
  35 test_expect_success 'HEAD is part of refs, valid objects appear valid' '
  36         git fsck >actual 2>&1 &&
  37         test_cmp empty actual
  38 '
  39
  40 # Corruption tests follow.  Make sure to remove all traces of the
  41 # specific corruption you test afterwards, lest a later test trip over
  42 # it.
  43
  44 test_expect_success 'setup: helpers for corruption tests' '
  45         sha1_file() {
  46                 echo "$*" | sed "s#..#.git/objects/&/#"
  47         } &&
  48
  49         remove_object() {
  50                 file=$(sha1_file "$*") &&
  51                 test -e "$file" &&
  52                 rm -f "$file"
  53         }
  54 '
  55
  56 test_expect_success 'object with bad sha1' '
  57         sha=$(echo blob | git hash-object -w --stdin) &&
  58         old=$(echo $sha | sed "s+^..+&/+") &&
  59         new=$(dirname $old)/ffffffffffffffffffffffffffffffffffffff &&
  60         sha="$(dirname $new)$(basename $new)" &&
  61         mv .git/objects/$old .git/objects/$new &&
  62         test_when_finished "remove_object $sha" &&
  63         git update-index --add --cacheinfo 100644 $sha foo &&
  64         test_when_finished "git read-tree -u --reset HEAD" &&
  65         tree=$(git write-tree) &&
  66         test_when_finished "remove_object $tree" &&
  67         cmt=$(echo bogus | git commit-tree $tree) &&
  68         test_when_finished "remove_object $cmt" &&
  69         git update-ref refs/heads/bogus $cmt &&
  70         test_when_finished "git update-ref -d refs/heads/bogus" &&
  71
  72         test_must_fail git fsck 2>out &&
  73         cat out &&
  74         grep "$sha.*corrupt" out
  75 '
  76
  77 test_expect_success 'branch pointing to non-commit' '
  78         git rev-parse HEAD^{tree} >.git/refs/heads/invalid &&
  79         test_when_finished "git update-ref -d refs/heads/invalid" &&
  80         test_must_fail git fsck 2>out &&
  81         cat out &&
  82         grep "not a commit" out
  83 '
  84
  85 test_expect_success 'HEAD link pointing at a funny object' '
  86         test_when_finished "mv .git/SAVED_HEAD .git/HEAD" &&
  87         mv .git/HEAD .git/SAVED_HEAD &&
  88         echo 0000000000000000000000000000000000000000 >.git/HEAD &&
  89         # avoid corrupt/broken HEAD from interfering with repo discovery
  90         test_must_fail env GIT_DIR=.git git fsck 2>out &&
  91         cat out &&
  92         grep "detached HEAD points" out
  93 '
  94
  95 test_expect_success 'HEAD link pointing at a funny place' '
  96         test_when_finished "mv .git/SAVED_HEAD .git/HEAD" &&
  97         mv .git/HEAD .git/SAVED_HEAD &&
  98         echo "ref: refs/funny/place" >.git/HEAD &&
  99         # avoid corrupt/broken HEAD from interfering with repo discovery
 100         test_must_fail env GIT_DIR=.git git fsck 2>out &&
 101         cat out &&
 102         grep "HEAD points to something strange" out
 103 '
 104
 105 test_expect_success 'email without @ is okay' '
 106         git cat-file commit HEAD >basis &&
 107         sed "s/@/AT/" basis >okay &&
 108         new=$(git hash-object -t commit -w --stdin <okay) &&
 109         test_when_finished "remove_object $new" &&
 110         git update-ref refs/heads/bogus "$new" &&
 111         test_when_finished "git update-ref -d refs/heads/bogus" &&
 112         git fsck 2>out &&
 113         cat out &&
 114         ! grep "commit $new" out
 115 '
 116
 117 test_expect_success 'email with embedded > is not okay' '
 118         git cat-file commit HEAD >basis &&
 119         sed "s/@[a-z]/&>/" basis >bad-email &&
 120         new=$(git hash-object -t commit -w --stdin <bad-email) &&
 121         test_when_finished "remove_object $new" &&
 122         git update-ref refs/heads/bogus "$new" &&
 123         test_when_finished "git update-ref -d refs/heads/bogus" &&
 124         test_must_fail git fsck 2>out &&
 125         cat out &&
 126         grep "error in commit $new" out
 127 '
 128
 129 test_expect_success 'missing < email delimiter is reported nicely' '
 130         git cat-file commit HEAD >basis &&
 131         sed "s/<//" basis >bad-email-2 &&
 132         new=$(git hash-object -t commit -w --stdin <bad-email-2) &&
 133         test_when_finished "remove_object $new" &&
 134         git update-ref refs/heads/bogus "$new" &&
 135         test_when_finished "git update-ref -d refs/heads/bogus" &&
 136         test_must_fail git fsck 2>out &&
 137         cat out &&
 138         grep "error in commit $new.* - bad name" out
 139 '
 140
 141 test_expect_success 'missing email is reported nicely' '
 142         git cat-file commit HEAD >basis &&
 143         sed "s/[a-z]* <[^>]*>//" basis >bad-email-3 &&
 144         new=$(git hash-object -t commit -w --stdin <bad-email-3) &&
 145         test_when_finished "remove_object $new" &&
 146         git update-ref refs/heads/bogus "$new" &&
 147         test_when_finished "git update-ref -d refs/heads/bogus" &&
 148         test_must_fail git fsck 2>out &&
 149         cat out &&
 150         grep "error in commit $new.* - missing email" out
 151 '
 152
 153 test_expect_success '> in name is reported' '
 154         git cat-file commit HEAD >basis &&
 155         sed "s/ </> </" basis >bad-email-4 &&
 156         new=$(git hash-object -t commit -w --stdin <bad-email-4) &&
 157         test_when_finished "remove_object $new" &&
 158         git update-ref refs/heads/bogus "$new" &&
 159         test_when_finished "git update-ref -d refs/heads/bogus" &&
 160         test_must_fail git fsck 2>out &&
 161         cat out &&
 162         grep "error in commit $new" out
 163 '
 164
 165 # date is 2^64 + 1
 166 test_expect_success 'integer overflow in timestamps is reported' '
 167         git cat-file commit HEAD >basis &&
 168         sed "s/^\\(author .*>\\) [0-9]*/\\1 18446744073709551617/" \
 169                 <basis >bad-timestamp &&
 170         new=$(git hash-object -t commit -w --stdin <bad-timestamp) &&
 171         test_when_finished "remove_object $new" &&
 172         git update-ref refs/heads/bogus "$new" &&
 173         test_when_finished "git update-ref -d refs/heads/bogus" &&
 174         test_must_fail git fsck 2>out &&
 175         cat out &&
 176         grep "error in commit $new.*integer overflow" out
 177 '
 178
 179 test_expect_success 'commit with NUL in header' '
 180         git cat-file commit HEAD >basis &&
 181         sed "s/author ./author Q/" <basis | q_to_nul >commit-NUL-header &&
 182         new=$(git hash-object -t commit -w --stdin <commit-NUL-header) &&
 183         test_when_finished "remove_object $new" &&
 184         git update-ref refs/heads/bogus "$new" &&
 185         test_when_finished "git update-ref -d refs/heads/bogus" &&
 186         test_must_fail git fsck 2>out &&
 187         cat out &&
 188         grep "error in commit $new.*unterminated header: NUL at offset" out
 189 '
 190
 191 test_expect_success 'malformatted tree object' '
 192         test_when_finished "git update-ref -d refs/tags/wrong" &&
 193         test_when_finished "remove_object \$T" &&
 194         T=$(
 195                 GIT_INDEX_FILE=test-index &&
 196                 export GIT_INDEX_FILE &&
 197                 rm -f test-index &&
 198                 >x &&
 199                 git add x &&
 200                 T=$(git write-tree) &&
 201                 (
 202                         git cat-file tree $T &&
 203                         git cat-file tree $T
 204                 ) |
 205                 git hash-object -w -t tree --stdin
 206         ) &&
 207         test_must_fail git fsck 2>out &&
 208         grep "error in tree .*contains duplicate file entries" out
 209 '
 210
 211 test_expect_success 'tag pointing to nonexistent' '
 212         cat >invalid-tag <<-\EOF &&
 213         object ffffffffffffffffffffffffffffffffffffffff
 214         type commit
 215         tag invalid
 216         tagger T A Gger <tagger@example.com> 1234567890 -0000
 217
 218         This is an invalid tag.
 219         EOF
 220
 221         tag=$(git hash-object -t tag -w --stdin <invalid-tag) &&
 222         test_when_finished "remove_object $tag" &&
 223         echo $tag >.git/refs/tags/invalid &&
 224         test_when_finished "git update-ref -d refs/tags/invalid" &&
 225         test_must_fail git fsck --tags >out &&
 226         cat out &&
 227         grep "broken link" out
 228 '
 229
 230 test_expect_success 'tag pointing to something else than its type' '
 231         sha=$(echo blob | git hash-object -w --stdin) &&
 232         test_when_finished "remove_object $sha" &&
 233         cat >wrong-tag <<-EOF &&
 234         object $sha
 235         type commit
 236         tag wrong
 237         tagger T A Gger <tagger@example.com> 1234567890 -0000
 238
 239         This is an invalid tag.
 240         EOF
 241
 242         tag=$(git hash-object -t tag -w --stdin <wrong-tag) &&
 243         test_when_finished "remove_object $tag" &&
 244         echo $tag >.git/refs/tags/wrong &&
 245         test_when_finished "git update-ref -d refs/tags/wrong" &&
 246         test_must_fail git fsck --tags
 247 '
 248
 249 test_expect_success 'tag with incorrect tag name & missing tagger' '
 250         sha=$(git rev-parse HEAD) &&
 251         cat >wrong-tag <<-EOF &&
 252         object $sha
 253         type commit
 254         tag wrong name format
 255
 256         This is an invalid tag.
 257         EOF
 258
 259         tag=$(git hash-object -t tag -w --stdin <wrong-tag) &&
 260         test_when_finished "remove_object $tag" &&
 261         echo $tag >.git/refs/tags/wrong &&
 262         test_when_finished "git update-ref -d refs/tags/wrong" &&
 263         git fsck --tags 2>out &&
 264
 265         cat >expect <<-EOF &&
 266         warning in tag $tag: badTagName: invalid '\''tag'\'' name: wrong name format
 267         warning in tag $tag: missingTaggerEntry: invalid format - expected '\''tagger'\'' line
 268         EOF
 269         test_cmp expect out
 270 '
 271
 272 test_expect_success 'tag with bad tagger' '
 273         sha=$(git rev-parse HEAD) &&
 274         cat >wrong-tag <<-EOF &&
 275         object $sha
 276         type commit
 277         tag not-quite-wrong
 278         tagger Bad Tagger Name
 279
 280         This is an invalid tag.
 281         EOF
 282
 283         tag=$(git hash-object --literally -t tag -w --stdin <wrong-tag) &&
 284         test_when_finished "remove_object $tag" &&
 285         echo $tag >.git/refs/tags/wrong &&
 286         test_when_finished "git update-ref -d refs/tags/wrong" &&
 287         test_must_fail git fsck --tags 2>out &&
 288         grep "error in tag .*: invalid author/committer" out
 289 '
 290
 291 test_expect_success 'tag with NUL in header' '
 292         sha=$(git rev-parse HEAD) &&
 293         q_to_nul >tag-NUL-header <<-EOF &&
 294         object $sha
 295         type commit
 296         tag contains-Q-in-header
 297         tagger T A Gger <tagger@example.com> 1234567890 -0000
 298
 299         This is an invalid tag.
 300         EOF
 301
 302         tag=$(git hash-object --literally -t tag -w --stdin <tag-NUL-header) &&
 303         test_when_finished "remove_object $tag" &&
 304         echo $tag >.git/refs/tags/wrong &&
 305         test_when_finished "git update-ref -d refs/tags/wrong" &&
 306         test_must_fail git fsck --tags 2>out &&
 307         cat out &&
 308         grep "error in tag $tag.*unterminated header: NUL at offset" out
 309 '
 310
 311 test_expect_success 'cleaned up' '
 312         git fsck >actual 2>&1 &&
 313         test_cmp empty actual
 314 '
 315
 316 test_expect_success 'rev-list --verify-objects' '
 317         git rev-list --verify-objects --all >/dev/null 2>out &&
 318         test_cmp empty out
 319 '
 320
 321 test_expect_success 'rev-list --verify-objects with bad sha1' '
 322         sha=$(echo blob | git hash-object -w --stdin) &&
 323         old=$(echo $sha | sed "s+^..+&/+") &&
 324         new=$(dirname $old)/ffffffffffffffffffffffffffffffffffffff &&
 325         sha="$(dirname $new)$(basename $new)" &&
 326         mv .git/objects/$old .git/objects/$new &&
 327         test_when_finished "remove_object $sha" &&
 328         git update-index --add --cacheinfo 100644 $sha foo &&
 329         test_when_finished "git read-tree -u --reset HEAD" &&
 330         tree=$(git write-tree) &&
 331         test_when_finished "remove_object $tree" &&
 332         cmt=$(echo bogus | git commit-tree $tree) &&
 333         test_when_finished "remove_object $cmt" &&
 334         git update-ref refs/heads/bogus $cmt &&
 335         test_when_finished "git update-ref -d refs/heads/bogus" &&
 336
 337         test_might_fail git rev-list --verify-objects refs/heads/bogus >/dev/null 2>out &&
 338         cat out &&
 339         grep -q "error: sha1 mismatch 63ffffffffffffffffffffffffffffffffffffff" out
 340 '
 341
 342 test_expect_success 'force fsck to ignore double author' '
 343         git cat-file commit HEAD >basis &&
 344         sed "s/^author .*/&,&/" <basis | tr , \\n >multiple-authors &&
 345         new=$(git hash-object -t commit -w --stdin <multiple-authors) &&
 346         test_when_finished "remove_object $new" &&
 347         git update-ref refs/heads/bogus "$new" &&
 348         test_when_finished "git update-ref -d refs/heads/bogus" &&
 349         test_must_fail git fsck &&
 350         git -c fsck.multipleAuthors=ignore fsck
 351 '
 352
 353 _bz='\0'
 354 _bz5="$_bz$_bz$_bz$_bz$_bz"
 355 _bz20="$_bz5$_bz5$_bz5$_bz5"
 356
 357 test_expect_success 'fsck notices blob entry pointing to null sha1' '
 358         (git init null-blob &&
 359          cd null-blob &&
 360          sha=$(printf "100644 file$_bz$_bz20" |
 361                git hash-object -w --stdin -t tree) &&
 362           git fsck 2>out &&
 363           cat out &&
 364           grep "warning.*null sha1" out
 365         )
 366 '
 367
 368 test_expect_success 'fsck notices submodule entry pointing to null sha1' '
 369         (git init null-commit &&
 370          cd null-commit &&
 371          sha=$(printf "160000 submodule$_bz$_bz20" |
 372                git hash-object -w --stdin -t tree) &&
 373           git fsck 2>out &&
 374           cat out &&
 375           grep "warning.*null sha1" out
 376         )
 377 '
 378
 379 while read name path pretty; do
 380         while read mode type; do
 381                 : ${pretty:=$path}
 382                 test_expect_success "fsck notices $pretty as $type" '
 383                 (
 384                         git init $name-$type &&
 385                         cd $name-$type &&
 386                         echo content >file &&
 387                         git add file &&
 388                         git commit -m base &&
 389                         blob=$(git rev-parse :file) &&
 390                         tree=$(git rev-parse HEAD^{tree}) &&
 391                         value=$(eval "echo \$$type") &&
 392                         printf "$mode $type %s\t%s" "$value" "$path" >bad &&
 393                         bad_tree=$(git mktree <bad) &&
 394                         git fsck 2>out &&
 395                         cat out &&
 396                         grep "warning.*tree $bad_tree" out
 397                 )'
 398         done <<-\EOF
 399         100644 blob
 400         040000 tree
 401         EOF
 402 done <<-EOF
 403 dot .
 404 dotdot ..
 405 dotgit .git
 406 dotgit-case .GIT
 407 dotgit-unicode .gI${u200c}T .gI{u200c}T
 408 dotgit-case2 .Git
 409 git-tilde1 git~1
 410 dotgitdot .git.
 411 dot-backslash-case .\\\\.GIT\\\\foobar
 412 dotgit-case-backslash .git\\\\foobar
 413 EOF
 414
 415 test_expect_success 'fsck allows .Ňit' '
 416         (
 417                 git init not-dotgit &&
 418                 cd not-dotgit &&
 419                 echo content >file &&
 420                 git add file &&
 421                 git commit -m base &&
 422                 blob=$(git rev-parse :file) &&
 423                 printf "100644 blob $blob\t.\\305\\207it" >tree &&
 424                 tree=$(git mktree <tree) &&
 425                 git fsck 2>err &&
 426                 test_line_count = 0 err
 427         )
 428 '
 429
 430 test_expect_success 'NUL in commit' '
 431         rm -fr nul-in-commit &&
 432         git init nul-in-commit &&
 433         (
 434                 cd nul-in-commit &&
 435                 git commit --allow-empty -m "initial commitQNUL after message" &&
 436                 git cat-file commit HEAD >original &&
 437                 q_to_nul <original >munged &&
 438                 git hash-object -w -t commit --stdin <munged >name &&
 439                 git branch bad $(cat name) &&
 440
 441                 test_must_fail git -c fsck.nulInCommit=error fsck 2>warn.1 &&
 442                 grep nulInCommit warn.1 &&
 443                 git fsck 2>warn.2 &&
 444                 grep nulInCommit warn.2
 445         )
 446 '
 447
 448 # create a static test repo which is broken by omitting
 449 # one particular object ($1, which is looked up via rev-parse
 450 # in the new repository).
 451 create_repo_missing () {
 452         rm -rf missing &&
 453         git init missing &&
 454         (
 455                 cd missing &&
 456                 git commit -m one --allow-empty &&
 457                 mkdir subdir &&
 458                 echo content >subdir/file &&
 459                 git add subdir/file &&
 460                 git commit -m two &&
 461                 unrelated=$(echo unrelated | git hash-object --stdin -w) &&
 462                 git tag -m foo tag $unrelated &&
 463                 sha1=$(git rev-parse --verify "$1") &&
 464                 path=$(echo $sha1 | sed 's|..|&/|') &&
 465                 rm .git/objects/$path
 466         )
 467 }
 468
 469 test_expect_success 'fsck notices missing blob' '
 470         create_repo_missing HEAD:subdir/file &&
 471         test_must_fail git -C missing fsck
 472 '
 473
 474 test_expect_success 'fsck notices missing subtree' '
 475         create_repo_missing HEAD:subdir &&
 476         test_must_fail git -C missing fsck
 477 '
 478
 479 test_expect_success 'fsck notices missing root tree' '
 480         create_repo_missing HEAD^{tree} &&
 481         test_must_fail git -C missing fsck
 482 '
 483
 484 test_expect_success 'fsck notices missing parent' '
 485         create_repo_missing HEAD^ &&
 486         test_must_fail git -C missing fsck
 487 '
 488
 489 test_expect_success 'fsck notices missing tagged object' '
 490         create_repo_missing tag^{blob} &&
 491         test_must_fail git -C missing fsck
 492 '
 493
 494 test_expect_success 'fsck notices ref pointing to missing commit' '
 495         create_repo_missing HEAD &&
 496         test_must_fail git -C missing fsck
 497 '
 498
 499 test_expect_success 'fsck notices ref pointing to missing tag' '
 500         create_repo_missing tag &&
 501         test_must_fail git -C missing fsck
 502 '
 503
 504 test_expect_success 'fsck --connectivity-only' '
 505         rm -rf connectivity-only &&
 506         git init connectivity-only &&
 507         (
 508                 cd connectivity-only &&
 509                 touch empty &&
 510                 git add empty &&
 511                 test_commit empty &&
 512                 empty=.git/objects/e6/9de29bb2d1d6434b8b29ae775ad8c2e48c5391 &&
 513                 rm -f $empty &&
 514                 echo invalid >$empty &&
 515                 test_must_fail git fsck --strict &&
 516                 git fsck --strict --connectivity-only &&
 517                 tree=$(git rev-parse HEAD:) &&
 518                 suffix=${tree#??} &&
 519                 tree=.git/objects/${tree%$suffix}/$suffix &&
 520                 rm -f $tree &&
 521                 echo invalid >$tree &&
 522                 test_must_fail git fsck --strict --connectivity-only
 523         )
 524 '
 525
 526 test_done