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author | Junio C Hamano <gitster@pobox.com> | 2021-10-25 16:06:56 -0700 |
---|---|---|
committer | Junio C Hamano <gitster@pobox.com> | 2021-10-25 16:06:56 -0700 |
commit | 061a21d36d807bdcf996f388d5e487d5e1993bbc (patch) | |
tree | 60c0032485577875d1dbbb0a121617c833c374b8 /t | |
parent | The fourteenth batch (diff) | |
parent | fsck: report invalid object type-path combinations (diff) | |
download | tgif-061a21d36d807bdcf996f388d5e487d5e1993bbc.tar.xz |
Merge branch 'ab/fsck-unexpected-type'
"git fsck" has been taught to report mismatch between expected and
actual types of an object better.
* ab/fsck-unexpected-type:
fsck: report invalid object type-path combinations
fsck: don't hard die on invalid object types
object-file.c: stop dying in parse_loose_header()
object-file.c: return ULHR_TOO_LONG on "header too long"
object-file.c: use "enum" return type for unpack_loose_header()
object-file.c: simplify unpack_loose_short_header()
object-file.c: make parse_loose_header_extended() public
object-file.c: return -1, not "status" from unpack_loose_header()
object-file.c: don't set "typep" when returning non-zero
cat-file tests: test for current --allow-unknown-type behavior
cat-file tests: add corrupt loose object test
cat-file tests: test for missing/bogus object with -t, -s and -p
cat-file tests: move bogus_* variable declarations earlier
fsck tests: test for garbage appended to a loose object
fsck tests: test current hash/type mismatch behavior
fsck tests: refactor one test to use a sub-repo
fsck tests: add test for fsck-ing an unknown type
Diffstat (limited to 't')
-rw-r--r-- | t/oid-info/oid | 2 | ||||
-rwxr-xr-x | t/t1006-cat-file.sh | 228 | ||||
-rwxr-xr-x | t/t1450-fsck.sh | 97 |
3 files changed, 291 insertions, 36 deletions
diff --git a/t/oid-info/oid b/t/oid-info/oid index a754970523..7547d2c790 100644 --- a/t/oid-info/oid +++ b/t/oid-info/oid @@ -27,3 +27,5 @@ numeric sha1:0123456789012345678901234567890123456789 numeric sha256:0123456789012345678901234567890123456789012345678901234567890123 deadbeef sha1:deadbeefdeadbeefdeadbeefdeadbeefdeadbeef deadbeef sha256:deadbeefdeadbeefdeadbeefdeadbeefdeadbeefdeadbeefdeadbeefdeadbeef +deadbeef_short sha1:deadbeefdeadbeefdeadbeefdeadbeefdeadbee +deadbeef_short sha256:deadbeefdeadbeefdeadbeefdeadbeefdeadbeefdeadbeefdeadbeefdeadbee diff --git a/t/t1006-cat-file.sh b/t/t1006-cat-file.sh index 4a753705ec..658628375c 100755 --- a/t/t1006-cat-file.sh +++ b/t/t1006-cat-file.sh @@ -315,46 +315,236 @@ test_expect_success '%(deltabase) reports packed delta bases' ' } ' -bogus_type="bogus" -bogus_content="bogus" -bogus_size=$(strlen "$bogus_content") -bogus_sha1=$(echo_without_newline "$bogus_content" | git hash-object -t $bogus_type --literally -w --stdin) +test_expect_success 'setup bogus data' ' + bogus_short_type="bogus" && + bogus_short_content="bogus" && + bogus_short_size=$(strlen "$bogus_short_content") && + bogus_short_sha1=$(echo_without_newline "$bogus_short_content" | git hash-object -t $bogus_short_type --literally -w --stdin) && + + bogus_long_type="abcdefghijklmnopqrstuvwxyz1234679" && + bogus_long_content="bogus" && + bogus_long_size=$(strlen "$bogus_long_content") && + bogus_long_sha1=$(echo_without_newline "$bogus_long_content" | git hash-object -t $bogus_long_type --literally -w --stdin) +' + +for arg1 in '' --allow-unknown-type +do + for arg2 in -s -t -p + do + if test "$arg1" = "--allow-unknown-type" && test "$arg2" = "-p" + then + continue + fi + + + test_expect_success "cat-file $arg1 $arg2 error on bogus short OID" ' + cat >expect <<-\EOF && + fatal: invalid object type + EOF + + if test "$arg1" = "--allow-unknown-type" + then + git cat-file $arg1 $arg2 $bogus_short_sha1 + else + test_must_fail git cat-file $arg1 $arg2 $bogus_short_sha1 >out 2>actual && + test_must_be_empty out && + test_cmp expect actual + fi + ' + + test_expect_success "cat-file $arg1 $arg2 error on bogus full OID" ' + if test "$arg2" = "-p" + then + cat >expect <<-EOF + error: header for $bogus_long_sha1 too long, exceeds 32 bytes + fatal: Not a valid object name $bogus_long_sha1 + EOF + else + cat >expect <<-EOF + error: header for $bogus_long_sha1 too long, exceeds 32 bytes + fatal: git cat-file: could not get object info + EOF + fi && + + if test "$arg1" = "--allow-unknown-type" + then + git cat-file $arg1 $arg2 $bogus_short_sha1 + else + test_must_fail git cat-file $arg1 $arg2 $bogus_long_sha1 >out 2>actual && + test_must_be_empty out && + test_cmp expect actual + fi + ' + + test_expect_success "cat-file $arg1 $arg2 error on missing short OID" ' + cat >expect.err <<-EOF && + fatal: Not a valid object name $(test_oid deadbeef_short) + EOF + test_must_fail git cat-file $arg1 $arg2 $(test_oid deadbeef_short) >out 2>err.actual && + test_must_be_empty out + ' + + test_expect_success "cat-file $arg1 $arg2 error on missing full OID" ' + if test "$arg2" = "-p" + then + cat >expect.err <<-EOF + fatal: Not a valid object name $(test_oid deadbeef) + EOF + else + cat >expect.err <<-\EOF + fatal: git cat-file: could not get object info + EOF + fi && + test_must_fail git cat-file $arg1 $arg2 $(test_oid deadbeef) >out 2>err.actual && + test_must_be_empty out && + test_cmp expect.err err.actual + ' + done +done + +test_expect_success '-e is OK with a broken object without --allow-unknown-type' ' + git cat-file -e $bogus_short_sha1 +' + +test_expect_success '-e can not be combined with --allow-unknown-type' ' + test_expect_code 128 git cat-file -e --allow-unknown-type $bogus_short_sha1 +' + +test_expect_success '-p cannot print a broken object even with --allow-unknown-type' ' + test_must_fail git cat-file -p $bogus_short_sha1 && + test_expect_code 128 git cat-file -p --allow-unknown-type $bogus_short_sha1 +' + +test_expect_success '<type> <hash> does not work with objects of broken types' ' + cat >err.expect <<-\EOF && + fatal: invalid object type "bogus" + EOF + test_must_fail git cat-file $bogus_short_type $bogus_short_sha1 2>err.actual && + test_cmp err.expect err.actual +' + +test_expect_success 'broken types combined with --batch and --batch-check' ' + echo $bogus_short_sha1 >bogus-oid && + + cat >err.expect <<-\EOF && + fatal: invalid object type + EOF + + test_must_fail git cat-file --batch <bogus-oid 2>err.actual && + test_cmp err.expect err.actual && + + test_must_fail git cat-file --batch-check <bogus-oid 2>err.actual && + test_cmp err.expect err.actual +' + +test_expect_success 'the --batch and --batch-check options do not combine with --allow-unknown-type' ' + test_expect_code 128 git cat-file --batch --allow-unknown-type <bogus-oid && + test_expect_code 128 git cat-file --batch-check --allow-unknown-type <bogus-oid +' + +test_expect_success 'the --allow-unknown-type option does not consider replacement refs' ' + cat >expect <<-EOF && + $bogus_short_type + EOF + git cat-file -t --allow-unknown-type $bogus_short_sha1 >actual && + test_cmp expect actual && + + # Create it manually, as "git replace" will die on bogus + # types. + head=$(git rev-parse --verify HEAD) && + test_when_finished "rm -rf .git/refs/replace" && + mkdir -p .git/refs/replace && + echo $head >.git/refs/replace/$bogus_short_sha1 && + + cat >expect <<-EOF && + commit + EOF + git cat-file -t --allow-unknown-type $bogus_short_sha1 >actual && + test_cmp expect actual +' test_expect_success "Type of broken object is correct" ' - echo $bogus_type >expect && - git cat-file -t --allow-unknown-type $bogus_sha1 >actual && + echo $bogus_short_type >expect && + git cat-file -t --allow-unknown-type $bogus_short_sha1 >actual && test_cmp expect actual ' test_expect_success "Size of broken object is correct" ' - echo $bogus_size >expect && - git cat-file -s --allow-unknown-type $bogus_sha1 >actual && + echo $bogus_short_size >expect && + git cat-file -s --allow-unknown-type $bogus_short_sha1 >actual && test_cmp expect actual ' test_expect_success 'clean up broken object' ' - rm .git/objects/$(test_oid_to_path $bogus_sha1) + rm .git/objects/$(test_oid_to_path $bogus_short_sha1) ' -bogus_type="abcdefghijklmnopqrstuvwxyz1234679" -bogus_content="bogus" -bogus_size=$(strlen "$bogus_content") -bogus_sha1=$(echo_without_newline "$bogus_content" | git hash-object -t $bogus_type --literally -w --stdin) - test_expect_success "Type of broken object is correct when type is large" ' - echo $bogus_type >expect && - git cat-file -t --allow-unknown-type $bogus_sha1 >actual && + echo $bogus_long_type >expect && + git cat-file -t --allow-unknown-type $bogus_long_sha1 >actual && test_cmp expect actual ' test_expect_success "Size of large broken object is correct when type is large" ' - echo $bogus_size >expect && - git cat-file -s --allow-unknown-type $bogus_sha1 >actual && + echo $bogus_long_size >expect && + git cat-file -s --allow-unknown-type $bogus_long_sha1 >actual && test_cmp expect actual ' test_expect_success 'clean up broken object' ' - rm .git/objects/$(test_oid_to_path $bogus_sha1) + rm .git/objects/$(test_oid_to_path $bogus_long_sha1) +' + +test_expect_success 'cat-file -t and -s on corrupt loose object' ' + git init --bare corrupt-loose.git && + ( + cd corrupt-loose.git && + + # Setup and create the empty blob and its path + empty_path=$(git rev-parse --git-path objects/$(test_oid_to_path "$EMPTY_BLOB")) && + git hash-object -w --stdin </dev/null && + + # Create another blob and its path + echo other >other.blob && + other_blob=$(git hash-object -w --stdin <other.blob) && + other_path=$(git rev-parse --git-path objects/$(test_oid_to_path "$other_blob")) && + + # Before the swap the size is 0 + cat >out.expect <<-EOF && + 0 + EOF + git cat-file -s "$EMPTY_BLOB" >out.actual 2>err.actual && + test_must_be_empty err.actual && + test_cmp out.expect out.actual && + + # Swap the two to corrupt the repository + mv -f "$other_path" "$empty_path" && + test_must_fail git fsck 2>err.fsck && + grep "hash-path mismatch" err.fsck && + + # confirm that cat-file is reading the new swapped-in + # blob... + cat >out.expect <<-EOF && + blob + EOF + git cat-file -t "$EMPTY_BLOB" >out.actual 2>err.actual && + test_must_be_empty err.actual && + test_cmp out.expect out.actual && + + # ... since it has a different size now. + cat >out.expect <<-EOF && + 6 + EOF + git cat-file -s "$EMPTY_BLOB" >out.actual 2>err.actual && + test_must_be_empty err.actual && + test_cmp out.expect out.actual && + + # So far "cat-file" has been happy to spew the found + # content out as-is. Try to make it zlib-invalid. + mv -f other.blob "$empty_path" && + test_must_fail git fsck 2>err.fsck && + grep "^error: inflate: data stream error (" err.fsck + ) ' # Tests for git cat-file --follow-symlinks diff --git a/t/t1450-fsck.sh b/t/t1450-fsck.sh index 5071ac63a5..6337236fd8 100755 --- a/t/t1450-fsck.sh +++ b/t/t1450-fsck.sh @@ -48,24 +48,70 @@ remove_object () { rm "$(sha1_file "$1")" } -test_expect_success 'object with bad sha1' ' - sha=$(echo blob | git hash-object -w --stdin) && - old=$(test_oid_to_path "$sha") && - new=$(dirname $old)/$(test_oid ff_2) && - sha="$(dirname $new)$(basename $new)" && - mv .git/objects/$old .git/objects/$new && - test_when_finished "remove_object $sha" && - git update-index --add --cacheinfo 100644 $sha foo && - test_when_finished "git read-tree -u --reset HEAD" && - tree=$(git write-tree) && - test_when_finished "remove_object $tree" && - cmt=$(echo bogus | git commit-tree $tree) && - test_when_finished "remove_object $cmt" && - git update-ref refs/heads/bogus $cmt && - test_when_finished "git update-ref -d refs/heads/bogus" && +test_expect_success 'object with hash mismatch' ' + git init --bare hash-mismatch && + ( + cd hash-mismatch && - test_must_fail git fsck 2>out && - test_i18ngrep "$sha.*corrupt" out + oid=$(echo blob | git hash-object -w --stdin) && + oldoid=$oid && + old=$(test_oid_to_path "$oid") && + new=$(dirname $old)/$(test_oid ff_2) && + oid="$(dirname $new)$(basename $new)" && + + mv objects/$old objects/$new && + git update-index --add --cacheinfo 100644 $oid foo && + tree=$(git write-tree) && + cmt=$(echo bogus | git commit-tree $tree) && + git update-ref refs/heads/bogus $cmt && + + test_must_fail git fsck 2>out && + grep "$oldoid: hash-path mismatch, found at: .*$new" out + ) +' + +test_expect_success 'object with hash and type mismatch' ' + git init --bare hash-type-mismatch && + ( + cd hash-type-mismatch && + + oid=$(echo blob | git hash-object -w --stdin -t garbage --literally) && + oldoid=$oid && + old=$(test_oid_to_path "$oid") && + new=$(dirname $old)/$(test_oid ff_2) && + oid="$(dirname $new)$(basename $new)" && + + mv objects/$old objects/$new && + git update-index --add --cacheinfo 100644 $oid foo && + tree=$(git write-tree) && + cmt=$(echo bogus | git commit-tree $tree) && + git update-ref refs/heads/bogus $cmt && + + + test_must_fail git fsck 2>out && + grep "^error: $oldoid: hash-path mismatch, found at: .*$new" out && + grep "^error: $oldoid: object is of unknown type '"'"'garbage'"'"'" out + ) +' + +test_expect_success POSIXPERM 'zlib corrupt loose object output ' ' + git init --bare corrupt-loose-output && + ( + cd corrupt-loose-output && + oid=$(git hash-object -w --stdin --literally </dev/null) && + oidf=objects/$(test_oid_to_path "$oid") && + chmod 755 $oidf && + echo extra garbage >>$oidf && + + cat >expect.error <<-EOF && + error: garbage at end of loose object '\''$oid'\'' + error: unable to unpack contents of ./$oidf + error: $oid: object corrupt or missing: ./$oidf + EOF + test_must_fail git fsck 2>actual && + grep ^error: actual >error && + test_cmp expect.error error + ) ' test_expect_success 'branch pointing to non-commit' ' @@ -865,4 +911,21 @@ test_expect_success 'detect corrupt index file in fsck' ' test_i18ngrep "bad index file" errors ' +test_expect_success 'fsck error and recovery on invalid object type' ' + git init --bare garbage-type && + ( + cd garbage-type && + + garbage_blob=$(git hash-object --stdin -w -t garbage --literally </dev/null) && + + cat >err.expect <<-\EOF && + fatal: invalid object type + EOF + test_must_fail git fsck >out 2>err && + grep -e "^error" -e "^fatal" err >errors && + test_line_count = 1 errors && + grep "$garbage_blob: object is of unknown type '"'"'garbage'"'"':" err + ) +' + test_done |