[PATCH v5 4/4] unbundle: use VERIFY_BUNDLE_FSCK_FOLLOW_FETCH for fetches

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From: Xing Xin <xingxin.xx@xxxxxxxxxxxxx>

This commit passes `VERIFY_BUNDLE_FSCK_FOLLOW_FETCH` to `unbundle` in
the fetching process, including:

- `transport.c:fetch_refs_from_bundle` for direct bundle fetches.
- `bundle-uri.c:unbundle_from_file` for bundle-uri enabled fetches.

This addition ensures a consistent logic for object verification during
fetch operations. Tests have been added to confirm functionality in the
scenarios mentioned above.

Reviewed-by: Patrick Steinhardt <ps@xxxxxx>
Signed-off-by: Xing Xin <xingxin.xx@xxxxxxxxxxxxx>
---
 bundle-uri.c                |  2 +-
 t/t5558-clone-bundle-uri.sh | 35 ++++++++++++++++++++++++++++++++++-
 t/t5607-clone-bundle.sh     | 33 +++++++++++++++++++++++++++++++++
 transport.c                 |  2 +-
 4 files changed, 69 insertions(+), 3 deletions(-)

diff --git a/bundle-uri.c b/bundle-uri.c
index 65666a11d9c..e7ebac6ce57 100644
--- a/bundle-uri.c
+++ b/bundle-uri.c
@@ -373,7 +373,7 @@ static int unbundle_from_file(struct repository *r, const char *file)
 	 * the prerequisite commits.
 	 */
 	if ((result = unbundle(r, &header, bundle_fd, NULL,
-			       VERIFY_BUNDLE_QUIET)))
+			       VERIFY_BUNDLE_QUIET | VERIFY_BUNDLE_FSCK_FOLLOW_FETCH)))
 		return 1;
 
 	/*
diff --git a/t/t5558-clone-bundle-uri.sh b/t/t5558-clone-bundle-uri.sh
index 8f4f802e4f1..48be1b18802 100755
--- a/t/t5558-clone-bundle-uri.sh
+++ b/t/t5558-clone-bundle-uri.sh
@@ -30,7 +30,21 @@ test_expect_success 'create bundle' '
 		git bundle create B.bundle topic &&
 
 		# Create a bundle with reference pointing to non-existent object.
-		sed "s/$(git rev-parse A)/$(git rev-parse B)/" <A.bundle >bad-header.bundle
+		sed "s/$(git rev-parse A)/$(git rev-parse B)/" <A.bundle >bad-header.bundle &&
+
+		cat >data <<-EOF &&
+		tree $(git rev-parse HEAD^{tree})
+		parent $(git rev-parse HEAD)
+		author A U Thor
+		committer A U Thor
+
+		commit: this is a commit with bad emails
+
+		EOF
+		git hash-object --literally -t commit -w --stdin <data >commit &&
+		git branch bad $(cat commit) &&
+		git bundle create bad-object.bundle bad &&
+		git update-ref -d refs/heads/bad
 	)
 '
 
@@ -52,6 +66,25 @@ test_expect_success 'clone with bundle that has bad header' '
 	! grep "refs/bundles/" refs
 '
 
+test_expect_success 'clone with bundle that has bad object' '
+	# Unbundle succeeds if no fsckObjects confugured.
+	git clone --bundle-uri="clone-from/bad-object.bundle" \
+		clone-from clone-bad-object-no-fsck &&
+	git -C clone-bad-object-no-fsck for-each-ref --format="%(refname)" >refs &&
+	grep "refs/bundles/" refs >actual &&
+	cat >expect <<-\EOF &&
+	refs/bundles/bad
+	EOF
+	test_cmp expect actual &&
+
+	# Unbundle fails with fsckObjects set true, but clone can still proceed.
+	git -c fetch.fsckObjects=true clone --bundle-uri="clone-from/bad-object.bundle" \
+		clone-from clone-bad-object-fsck 2>err &&
+	test_grep "missingEmail" err &&
+	git -C clone-bad-object-fsck for-each-ref --format="%(refname)" >refs &&
+	! grep "refs/bundles/" refs
+'
+
 test_expect_success 'clone with path bundle and non-default hash' '
 	test_when_finished "rm -rf clone-path-non-default-hash" &&
 	GIT_DEFAULT_HASH=sha256 git clone --bundle-uri="clone-from/B.bundle" \
diff --git a/t/t5607-clone-bundle.sh b/t/t5607-clone-bundle.sh
index 0d1e92d9963..5182efc0b45 100755
--- a/t/t5607-clone-bundle.sh
+++ b/t/t5607-clone-bundle.sh
@@ -138,6 +138,39 @@ test_expect_success 'fetch SHA-1 from bundle' '
 	git fetch --no-tags foo/tip.bundle "$(cat hash)"
 '
 
+test_expect_success 'clone bundle with different fsckObjects configurations' '
+	test_create_repo bundle-fsck &&
+	(
+		cd bundle-fsck &&
+		test_commit first &&
+		cat >data <<-EOF &&
+		tree $(git rev-parse HEAD^{tree})
+		parent $(git rev-parse HEAD)
+		author A U Thor
+		committer A U Thor
+
+		commit: this is a commit with bad emails
+
+		EOF
+		git hash-object --literally -t commit -w --stdin <data >commit &&
+		git branch bad $(cat commit) &&
+		git bundle create bad.bundle bad
+	) &&
+
+	git clone bundle-fsck/bad.bundle bundle-no-fsck &&
+
+	git -c fetch.fsckObjects=false -c transfer.fsckObjects=true \
+		clone bundle-fsck/bad.bundle bundle-fetch-no-fsck &&
+
+	test_must_fail git -c fetch.fsckObjects=true \
+		clone bundle-fsck/bad.bundle bundle-fetch-fsck 2>err &&
+	test_grep "missingEmail" err &&
+
+	test_must_fail git -c transfer.fsckObjects=true \
+		clone bundle-fsck/bad.bundle bundle-transfer-fsck 2>err &&
+	test_grep "missingEmail" err
+'
+
 test_expect_success 'git bundle uses expected default format' '
 	git bundle create bundle HEAD^.. &&
 	cat >expect <<-EOF &&
diff --git a/transport.c b/transport.c
index 0ad04b77fd2..6cd5683bb45 100644
--- a/transport.c
+++ b/transport.c
@@ -184,7 +184,7 @@ static int fetch_refs_from_bundle(struct transport *transport,
 	if (!data->get_refs_from_bundle_called)
 		get_refs_from_bundle_inner(transport);
 	ret = unbundle(the_repository, &data->header, data->fd,
-		       &extra_index_pack_args, 0);
+		       &extra_index_pack_args, VERIFY_BUNDLE_FSCK_FOLLOW_FETCH);
 	transport->hash_algo = data->header.hash_algo;
 	return ret;
 }
-- 
gitgitgadget




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