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ref: check the full refname instead of basename

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In "files-backend.c::files_fsck_refs_name", we validate the refname
format by using "check_refname_format" to check the basename of the
iterator with "REFNAME_ALLOW_ONELEVEL" flag.

However, this is a bad implementation. Although we doesn't allow a
single "@" in ".git" directory, we do allow "refs/heads/@". So, we will
report an error wrongly when there is a "refs/heads/@" ref by using one
level refname "@".

Because we just check one level refname, we either cannot check the
other parts of the full refname. And we will ignore the following
errors:

  "refs/heads/ new-feature/test"
  "refs/heads/~new-feature/test"

In order to fix the above problem, enhance "files_fsck_refs_name" to use
the full name for "check_refname_format". Then, replace the tests which
are related to "@" and add tests to exercise the above situations using
for loop to avoid repetition.

Mentored-by: Patrick Steinhardt <ps@pks.im>
Mentored-by: Karthik Nayak <karthik.188@gmail.com>
Signed-off-by: shejialuo <shejialuo@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
This commit is contained in:
shejialuo
2024-11-20 19:51:16 +08:00
committed by Junio C Hamano
parent 38cd6eead1
commit 32dc1c7ec3
2 changed files with 60 additions and 39 deletions
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7
refs/files-backend.c
View File

@ -3519,10 +3519,13 @@ static int files_fsck_refs_name(struct ref_store *ref_store UNUSED,
if (iter->basename[0] != '.' && ends_with(iter->basename, ".lock"))
goto cleanup;
if (check_refname_format(iter->basename, REFNAME_ALLOW_ONELEVEL)) {
/*
* This works right now because we never check the root refs.
*/
strbuf_addf(&sb, "%s/%s", refs_check_dir, iter->relative_path);
if (check_refname_format(sb.buf, 0)) {
struct fsck_ref_report report = { 0 };
strbuf_addf(&sb, "%s/%s", refs_check_dir, iter->relative_path);
report.path = sb.buf;
ret = fsck_report_ref(o, &report,
FSCK_MSG_BAD_REF_NAME,

92
t/t0602-reffiles-fsck.sh
View File

@ -18,63 +18,81 @@ test_expect_success 'ref name should be checked' '
cd repo &&
git commit --allow-empty -m initial &&
git checkout -b branch-1 &&
git tag tag-1 &&
git commit --allow-empty -m second &&
git checkout -b branch-2 &&
git tag tag-2 &&
git tag multi_hierarchy/tag-2 &&
git checkout -b default-branch &&
git tag default-tag &&
git tag multi_hierarchy/default-tag &&
cp $branch_dir_prefix/branch-1 $branch_dir_prefix/.branch-1 &&
test_must_fail git refs verify 2>err &&
cat >expect <<-EOF &&
error: refs/heads/.branch-1: badRefName: invalid refname format
EOF
rm $branch_dir_prefix/.branch-1 &&
test_cmp expect err &&
cp $branch_dir_prefix/branch-1 $branch_dir_prefix/@ &&
test_must_fail git refs verify 2>err &&
cat >expect <<-EOF &&
error: refs/heads/@: badRefName: invalid refname format
EOF
cp $branch_dir_prefix/default-branch $branch_dir_prefix/@ &&
git refs verify 2>err &&
test_must_be_empty err &&
rm $branch_dir_prefix/@ &&
test_cmp expect err &&
cp $tag_dir_prefix/multi_hierarchy/tag-2 $tag_dir_prefix/multi_hierarchy/@ &&
test_must_fail git refs verify 2>err &&
cat >expect <<-EOF &&
error: refs/tags/multi_hierarchy/@: badRefName: invalid refname format
EOF
rm $tag_dir_prefix/multi_hierarchy/@ &&
test_cmp expect err &&
cp $tag_dir_prefix/tag-1 $tag_dir_prefix/tag-1.lock &&
cp $tag_dir_prefix/default-tag $tag_dir_prefix/tag-1.lock &&
git refs verify 2>err &&
rm $tag_dir_prefix/tag-1.lock &&
test_must_be_empty err &&
cp $tag_dir_prefix/tag-1 $tag_dir_prefix/.lock &&
cp $tag_dir_prefix/default-tag $tag_dir_prefix/.lock &&
test_must_fail git refs verify 2>err &&
cat >expect <<-EOF &&
error: refs/tags/.lock: badRefName: invalid refname format
EOF
rm $tag_dir_prefix/.lock &&
test_cmp expect err
test_cmp expect err &&
for refname in ".refname-starts-with-dot" "~refname-has-stride"
do
cp $branch_dir_prefix/default-branch "$branch_dir_prefix/$refname" &&
test_must_fail git refs verify 2>err &&
cat >expect <<-EOF &&
error: refs/heads/$refname: badRefName: invalid refname format
EOF
rm "$branch_dir_prefix/$refname" &&
test_cmp expect err || return 1
done &&
for refname in ".refname-starts-with-dot" "~refname-has-stride"
do
cp $tag_dir_prefix/default-tag "$tag_dir_prefix/$refname" &&
test_must_fail git refs verify 2>err &&
cat >expect <<-EOF &&
error: refs/tags/$refname: badRefName: invalid refname format
EOF
rm "$tag_dir_prefix/$refname" &&
test_cmp expect err || return 1
done &&
for refname in ".refname-starts-with-dot" "~refname-has-stride"
do
cp $tag_dir_prefix/multi_hierarchy/default-tag "$tag_dir_prefix/multi_hierarchy/$refname" &&
test_must_fail git refs verify 2>err &&
cat >expect <<-EOF &&
error: refs/tags/multi_hierarchy/$refname: badRefName: invalid refname format
EOF
rm "$tag_dir_prefix/multi_hierarchy/$refname" &&
test_cmp expect err || return 1
done &&
for refname in ".refname-starts-with-dot" "~refname-has-stride"
do
mkdir "$branch_dir_prefix/$refname" &&
cp $branch_dir_prefix/default-branch "$branch_dir_prefix/$refname/default-branch" &&
test_must_fail git refs verify 2>err &&
cat >expect <<-EOF &&
error: refs/heads/$refname/default-branch: badRefName: invalid refname format
EOF
rm -r "$branch_dir_prefix/$refname" &&
test_cmp expect err || return 1
done
'
test_expect_success 'ref name check should be adapted into fsck messages' '
test_when_finished "rm -rf repo" &&
git init repo &&
branch_dir_prefix=.git/refs/heads &&
tag_dir_prefix=.git/refs/tags &&
cd repo &&
git commit --allow-empty -m initial &&
git checkout -b branch-1 &&
git tag tag-1 &&
git commit --allow-empty -m second &&
git checkout -b branch-2 &&
git tag tag-2 &&
cp $branch_dir_prefix/branch-1 $branch_dir_prefix/.branch-1 &&
git -c fsck.badRefName=warn refs verify 2>err &&
@ -84,7 +102,7 @@ test_expect_success 'ref name check should be adapted into fsck messages' '
rm $branch_dir_prefix/.branch-1 &&
test_cmp expect err &&
cp $branch_dir_prefix/branch-1 $branch_dir_prefix/@ &&
cp $branch_dir_prefix/branch-1 $branch_dir_prefix/.branch-1 &&
git -c fsck.badRefName=ignore refs verify 2>err &&
test_must_be_empty err
'