Andrew's git / gitweb.git / t/t1450-fsck.sh
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t / t1450-fsck.shon commit Merge branch 'rs/fsck-nul-header' (e2187fe)
   1#!/bin/sh
   2
   3test_description='git fsck random collection of tests
   4
   5* (HEAD) B
   6* (master) A
   7'
   8
   9. ./test-lib.sh
  10
  11test_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
  23test_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
  35test_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
  44test_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 "$file"
  53        }
  54'
  55
  56test_expect_success 'object with bad sha1' '
  57        sha=$(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
  77test_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
  85test_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
  95test_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
 105test_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 $new" out
 115'
 116
 117test_expect_success 'email with embedded > is not okay' '
 118        git cat-file commit HEAD >basis &&
 119        sed "s/@[a-z]/&>/" basis >bad-email &&
 120        new=$(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 $new" out
 127'
 128
 129test_expect_success 'missing < email delimiter is reported nicely' '
 130        git cat-file commit HEAD >basis &&
 131        sed "s/<//" basis >bad-email-2 &&
 132        new=$(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 $new.* - bad name" out
 139'
 140
 141test_expect_success 'missing email is reported nicely' '
 142        git cat-file commit HEAD >basis &&
 143        sed "s/[a-z]* <[^>]*>//" basis >bad-email-3 &&
 144        new=$(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 $new.* - missing email" out
 151'
 152
 153test_expect_success '> in name is reported' '
 154        git cat-file commit HEAD >basis &&
 155        sed "s/ </> </" basis >bad-email-4 &&
 156        new=$(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 $new" out
 163'
 164
 165# date is 2^64 + 1
 166test_expect_success 'integer overflow in timestamps is reported' '
 167        git cat-file commit HEAD >basis &&
 168        sed "s/^\\(author .*>\\) [0-9]*/\\1 18446744073709551617/" \
 169                <basis >bad-timestamp &&
 170        new=$(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 $new.*integer overflow" out
 177'
 178
 179test_expect_success 'commit with NUL in header' '
 180        git cat-file commit HEAD >basis &&
 181        sed "s/author ./author Q/" <basis | q_to_nul >commit-NUL-header &&
 182        new=$(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 $new.*unterminated header: NUL at offset" out
 189'
 190
 191test_expect_success 'malformatted tree object' '
 192        test_when_finished "git update-ref -d refs/tags/wrong" &&
 193        test_when_finished "remove_object \$T" &&
 194        T=$(
 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 $T
 204                ) |
 205                git hash-object -w -t tree --stdin
 206        ) &&
 207        test_must_fail git fsck 2>out &&
 208        grep "error in tree .*contains duplicate file entries" out
 209'
 210
 211test_expect_success 'tag pointing to nonexistent' '
 212        cat >invalid-tag <<-\EOF &&
 213        object ffffffffffffffffffffffffffffffffffffffff
 214        type commit
 215        tag invalid
 216        tagger T A Gger <tagger@example.com> 1234567890 -0000
 217
 218        This is an invalid tag.
 219        EOF
 220
 221        tag=$(git hash-object -t tag -w --stdin <invalid-tag) &&
 222        test_when_finished "remove_object $tag" &&
 223        echo $tag >.git/refs/tags/invalid &&
 224        test_when_finished "git update-ref -d refs/tags/invalid" &&
 225        test_must_fail git fsck --tags >out &&
 226        cat out &&
 227        grep "broken link" out
 228'
 229
 230test_expect_success 'tag pointing to something else than its type' '
 231        sha=$(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 $tag >.git/refs/tags/wrong &&
 245        test_when_finished "git update-ref -d refs/tags/wrong" &&
 246        test_must_fail git fsck --tags
 247'
 248
 249test_expect_success 'tag with incorrect tag name & missing tagger' '
 250        sha=$(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 $tag: missingTaggerEntry: invalid format - expected '\''tagger'\'' line
 268        EOF
 269        test_cmp expect out
 270'
 271
 272test_expect_success 'tag with bad tagger' '
 273        sha=$(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 $tag >.git/refs/tags/wrong &&
 286        test_when_finished "git update-ref -d refs/tags/wrong" &&
 287        test_must_fail git fsck --tags 2>out &&
 288        grep "error in tag .*: invalid author/committer" out
 289'
 290
 291test_expect_success 'tag with NUL in header' '
 292        sha=$(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 $tag.*unterminated header: NUL at offset" out
 309'
 310
 311test_expect_success 'cleaned up' '
 312        git fsck >actual 2>&1 &&
 313        test_cmp empty actual
 314'
 315
 316test_expect_success 'rev-list --verify-objects' '
 317        git rev-list --verify-objects --all >/dev/null 2>out &&
 318        test_cmp empty out
 319'
 320
 321test_expect_success 'rev-list --verify-objects with bad sha1' '
 322        sha=$(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 $cmt &&
 335        test_when_finished "git update-ref -d refs/heads/bogus" &&
 336
 337        test_might_fail git rev-list --verify-objects refs/heads/bogus >/dev/null 2>out &&
 338        cat out &&
 339        grep -q "error: sha1 mismatch 63ffffffffffffffffffffffffffffffffffffff" out
 340'
 341
 342test_expect_success 'force fsck to ignore double author' '
 343        git cat-file commit HEAD >basis &&
 344        sed "s/^author .*/&,&/" <basis | tr , \\n >multiple-authors &&
 345        new=$(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$_bz5"
 356
 357test_expect_success 'fsck notices blob entry pointing to null sha1' '
 358        (git init null-blob &&
 359         cd null-blob &&
 360         sha=$(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
 368test_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
 379while 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 $bad_tree" out
 397                )'
 398        done <<-\EOF
 399        100644 blob
 400        040000 tree
 401        EOF
 402done <<-EOF
 403dot .
 404dotdot ..
 405dotgit .git
 406dotgit-case .GIT
 407dotgit-unicode .gI${u200c}T .gI{u200c}T
 408dotgit-case2 .Git
 409git-tilde1 git~1
 410dotgitdot .git.
 411dot-backslash-case .\\\\.GIT\\\\foobar
 412dotgit-case-backslash .git\\\\foobar
 413EOF
 414
 415test_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# create a static test repo which is broken by omitting
 431# one particular object ($1, which is looked up via rev-parse
 432# in the new repository).
 433create_repo_missing () {
 434        rm -rf missing &&
 435        git init missing &&
 436        (
 437                cd missing &&
 438                git commit -m one --allow-empty &&
 439                mkdir subdir &&
 440                echo content >subdir/file &&
 441                git add subdir/file &&
 442                git commit -m two &&
 443                unrelated=$(echo unrelated | git hash-object --stdin -w) &&
 444                git tag -m foo tag $unrelated &&
 445                sha1=$(git rev-parse --verify "$1") &&
 446                path=$(echo $sha1 | sed 's|..|&/|') &&
 447                rm .git/objects/$path
 448        )
 449}
 450
 451test_expect_success 'fsck notices missing blob' '
 452        create_repo_missing HEAD:subdir/file &&
 453        test_must_fail git -C missing fsck
 454'
 455
 456test_expect_success 'fsck notices missing subtree' '
 457        create_repo_missing HEAD:subdir &&
 458        test_must_fail git -C missing fsck
 459'
 460
 461test_expect_success 'fsck notices missing root tree' '
 462        create_repo_missing HEAD^{tree} &&
 463        test_must_fail git -C missing fsck
 464'
 465
 466test_expect_success 'fsck notices missing parent' '
 467        create_repo_missing HEAD^ &&
 468        test_must_fail git -C missing fsck
 469'
 470
 471test_expect_success 'fsck notices missing tagged object' '
 472        create_repo_missing tag^{blob} &&
 473        test_must_fail git -C missing fsck
 474'
 475
 476test_expect_success 'fsck notices ref pointing to missing commit' '
 477        create_repo_missing HEAD &&
 478        test_must_fail git -C missing fsck
 479'
 480
 481test_expect_success 'fsck notices ref pointing to missing tag' '
 482        create_repo_missing tag &&
 483        test_must_fail git -C missing fsck
 484'
 485
 486test_expect_success 'fsck --connectivity-only' '
 487        rm -rf connectivity-only &&
 488        git init connectivity-only &&
 489        (
 490                cd connectivity-only &&
 491                touch empty &&
 492                git add empty &&
 493                test_commit empty &&
 494                empty=.git/objects/e6/9de29bb2d1d6434b8b29ae775ad8c2e48c5391 &&
 495                rm -f $empty &&
 496                echo invalid >$empty &&
 497                test_must_fail git fsck --strict &&
 498                git fsck --strict --connectivity-only &&
 499                tree=$(git rev-parse HEAD:) &&
 500                suffix=${tree#??} &&
 501                tree=.git/objects/${tree%$suffix}/$suffix &&
 502                rm -f $tree &&
 503                echo invalid >$tree &&
 504                test_must_fail git fsck --strict --connectivity-only
 505        )
 506'
 507
 508test_done