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d0f810f0bc
We currently do not handle badly named refs well:
$ cp .git/refs/heads/master .git/refs/heads/master.....@\*@\\.
$ git branch
fatal: Reference has invalid format: 'refs/heads/master.....@*@\.'
$ git branch -D master.....@\*@\\.
error: branch 'master.....@*@\.' not found.
Users cannot recover from a badly named ref without manually finding
and deleting the loose ref file or appropriate line in packed-refs.
Making that easier will make it easier to tweak the ref naming rules
in the future, for example to forbid shell metacharacters like '`'
and '"', without putting people in a state that is hard to get out of.
So allow "branch --list" to show these refs and allow "branch -d/-D"
and "update-ref -d" to delete them. Other commands (for example to
rename refs) will continue to not handle these refs but can be changed
in later patches.
Details:
In resolving functions, refuse to resolve refs that don't pass the
git-check-ref-format(1) check unless the new RESOLVE_REF_ALLOW_BAD_NAME
flag is passed. Even with RESOLVE_REF_ALLOW_BAD_NAME, refuse to
resolve refs that escape the refs/ directory and do not match the
pattern [A-Z_]* (think "HEAD" and "MERGE_HEAD").
In locking functions, refuse to act on badly named refs unless they
are being deleted and either are in the refs/ directory or match [A-Z_]*.
Just like other invalid refs, flag resolved, badly named refs with the
REF_ISBROKEN flag, treat them as resolving to null_sha1, and skip them
in all iteration functions except for for_each_rawref.
Flag badly named refs (but not symrefs pointing to badly named refs)
with a REF_BAD_NAME flag to make it easier for future callers to
notice and handle them specially. For example, in a later patch
for-each-ref will use this flag to detect refs whose names can confuse
callers parsing for-each-ref output.
In the transaction API, refuse to create or update badly named refs,
but allow deleting them (unless they try to escape refs/ and don't match
[A-Z_]*).
Signed-off-by: Ronnie Sahlberg <sahlberg@google.com>
Signed-off-by: Jonathan Nieder <jrnieder@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
207 lines
6.4 KiB
Bash
Executable file
207 lines
6.4 KiB
Bash
Executable file
#!/bin/sh
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test_description='Test handling of ref names that check-ref-format rejects'
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. ./test-lib.sh
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test_expect_success setup '
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test_commit one &&
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test_commit two
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'
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test_expect_success 'fast-import: fail on invalid branch name ".badbranchname"' '
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test_when_finished "rm -f .git/objects/pack_* .git/objects/index_*" &&
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cat >input <<-INPUT_END &&
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commit .badbranchname
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committer $GIT_COMMITTER_NAME <$GIT_COMMITTER_EMAIL> $GIT_COMMITTER_DATE
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data <<COMMIT
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corrupt
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COMMIT
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from refs/heads/master
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INPUT_END
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test_must_fail git fast-import <input
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'
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test_expect_success 'fast-import: fail on invalid branch name "bad[branch]name"' '
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test_when_finished "rm -f .git/objects/pack_* .git/objects/index_*" &&
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cat >input <<-INPUT_END &&
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commit bad[branch]name
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committer $GIT_COMMITTER_NAME <$GIT_COMMITTER_EMAIL> $GIT_COMMITTER_DATE
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data <<COMMIT
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corrupt
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COMMIT
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from refs/heads/master
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INPUT_END
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test_must_fail git fast-import <input
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'
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test_expect_success 'git branch shows badly named ref' '
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cp .git/refs/heads/master .git/refs/heads/broken...ref &&
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test_when_finished "rm -f .git/refs/heads/broken...ref" &&
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git branch >output &&
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grep -e "broken\.\.\.ref" output
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'
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test_expect_success 'branch -d can delete badly named ref' '
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cp .git/refs/heads/master .git/refs/heads/broken...ref &&
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test_when_finished "rm -f .git/refs/heads/broken...ref" &&
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git branch -d broken...ref &&
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git branch >output &&
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! grep -e "broken\.\.\.ref" output
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'
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test_expect_success 'branch -D can delete badly named ref' '
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cp .git/refs/heads/master .git/refs/heads/broken...ref &&
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test_when_finished "rm -f .git/refs/heads/broken...ref" &&
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git branch -D broken...ref &&
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git branch >output &&
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! grep -e "broken\.\.\.ref" output
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'
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test_expect_success 'branch -D cannot delete non-ref in .git dir' '
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echo precious >.git/my-private-file &&
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echo precious >expect &&
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test_must_fail git branch -D ../../my-private-file &&
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test_cmp expect .git/my-private-file
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'
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test_expect_success 'branch -D cannot delete absolute path' '
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git branch -f extra &&
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test_must_fail git branch -D "$(pwd)/.git/refs/heads/extra" &&
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test_cmp_rev HEAD extra
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'
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test_expect_success 'git branch cannot create a badly named ref' '
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test_when_finished "rm -f .git/refs/heads/broken...ref" &&
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test_must_fail git branch broken...ref &&
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git branch >output &&
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! grep -e "broken\.\.\.ref" output
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'
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test_expect_success 'branch -m cannot rename to a bad ref name' '
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test_when_finished "rm -f .git/refs/heads/broken...ref" &&
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test_might_fail git branch -D goodref &&
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git branch goodref &&
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test_must_fail git branch -m goodref broken...ref &&
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test_cmp_rev master goodref &&
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git branch >output &&
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! grep -e "broken\.\.\.ref" output
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'
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test_expect_failure 'branch -m can rename from a bad ref name' '
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cp .git/refs/heads/master .git/refs/heads/broken...ref &&
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test_when_finished "rm -f .git/refs/heads/broken...ref" &&
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git branch -m broken...ref renamed &&
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test_cmp_rev master renamed &&
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git branch >output &&
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! grep -e "broken\.\.\.ref" output
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'
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test_expect_success 'push cannot create a badly named ref' '
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test_when_finished "rm -f .git/refs/heads/broken...ref" &&
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test_must_fail git push "file://$(pwd)" HEAD:refs/heads/broken...ref &&
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git branch >output &&
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! grep -e "broken\.\.\.ref" output
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'
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test_expect_failure 'push --mirror can delete badly named ref' '
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top=$(pwd) &&
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git init src &&
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git init dest &&
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(
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cd src &&
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test_commit one
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) &&
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(
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cd dest &&
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test_commit two &&
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git checkout --detach &&
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cp .git/refs/heads/master .git/refs/heads/broken...ref
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) &&
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git -C src push --mirror "file://$top/dest" &&
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git -C dest branch >output &&
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! grep -e "broken\.\.\.ref" output
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'
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test_expect_success 'rev-parse skips symref pointing to broken name' '
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test_when_finished "rm -f .git/refs/heads/broken...ref" &&
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git branch shadow one &&
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cp .git/refs/heads/master .git/refs/heads/broken...ref &&
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git symbolic-ref refs/tags/shadow refs/heads/broken...ref &&
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git rev-parse --verify one >expect &&
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git rev-parse --verify shadow >actual 2>err &&
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test_cmp expect actual &&
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test_i18ngrep "ignoring.*refs/tags/shadow" err
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'
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test_expect_success 'update-ref --no-deref -d can delete reference to broken name' '
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git symbolic-ref refs/heads/badname refs/heads/broken...ref &&
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test_when_finished "rm -f .git/refs/heads/badname" &&
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test_path_is_file .git/refs/heads/badname &&
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git update-ref --no-deref -d refs/heads/badname &&
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test_path_is_missing .git/refs/heads/badname
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'
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test_expect_success 'update-ref -d can delete broken name' '
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cp .git/refs/heads/master .git/refs/heads/broken...ref &&
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test_when_finished "rm -f .git/refs/heads/broken...ref" &&
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git update-ref -d refs/heads/broken...ref &&
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git branch >output &&
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! grep -e "broken\.\.\.ref" output
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'
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test_expect_success 'update-ref -d cannot delete non-ref in .git dir' '
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echo precious >.git/my-private-file &&
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echo precious >expect &&
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test_must_fail git update-ref -d my-private-file &&
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test_cmp expect .git/my-private-file
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'
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test_expect_success 'update-ref -d cannot delete absolute path' '
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git branch -f extra &&
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test_must_fail git update-ref -d "$(pwd)/.git/refs/heads/extra" &&
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test_cmp_rev HEAD extra
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'
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test_expect_success 'update-ref --stdin fails create with bad ref name' '
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echo "create ~a refs/heads/master" >stdin &&
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test_must_fail git update-ref --stdin <stdin 2>err &&
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grep "fatal: invalid ref format: ~a" err
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'
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test_expect_success 'update-ref --stdin fails update with bad ref name' '
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echo "update ~a refs/heads/master" >stdin &&
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test_must_fail git update-ref --stdin <stdin 2>err &&
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grep "fatal: invalid ref format: ~a" err
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'
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test_expect_success 'update-ref --stdin fails delete with bad ref name' '
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echo "delete ~a refs/heads/master" >stdin &&
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test_must_fail git update-ref --stdin <stdin 2>err &&
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grep "fatal: invalid ref format: ~a" err
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'
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test_expect_success 'update-ref --stdin -z fails create with bad ref name' '
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printf "%s\0" "create ~a " refs/heads/master >stdin &&
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test_must_fail git update-ref -z --stdin <stdin 2>err &&
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grep "fatal: invalid ref format: ~a " err
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'
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test_expect_success 'update-ref --stdin -z fails update with bad ref name' '
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printf "%s\0" "update ~a" refs/heads/master "" >stdin &&
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test_must_fail git update-ref -z --stdin <stdin 2>err &&
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grep "fatal: invalid ref format: ~a" err
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'
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test_expect_success 'update-ref --stdin -z fails delete with bad ref name' '
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printf "%s\0" "delete ~a" refs/heads/master >stdin &&
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test_must_fail git update-ref -z --stdin <stdin 2>err &&
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grep "fatal: invalid ref format: ~a" err
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'
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test_done
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