transport: propagate fsck configuration during bundle fetch

When fetching directly from a bundle, fsck message severity
configuration is not propagated to the underlying git-index-pack(1). It
is only capable of enabling or disabling fsck checks entirely. This does
not align with the fsck behavior for fetches through git-fetch-pack(1).

Use the fsck config parsing from fetch-pack to populate fsck message
severity configuration and wire it through to `unbundle()` to enable the
same fsck verification as done through fetch-pack.

Signed-off-by: Justin Tobler <[email protected]>
Signed-off-by: Junio C Hamano <[email protected]>

Author: jltobler

t/t5607-clone-bundle.sh

@@ -171,6 +171,13 @@ test_expect_success 'clone bundle with different fsckObjects configurations' '
 
 	test_must_fail git -c transfer.fsckObjects=true \
 		clone bundle-fsck/bad.bundle bundle-transfer-fsck 2>err &&
+	test_grep "missingEmail" err &&
+
+	git -c fetch.fsckObjects=true -c fetch.fsck.missingEmail=ignore \
+		clone bundle-fsck/bad.bundle bundle-fsck-ignore &&
+
+	test_must_fail git -c fetch.fsckObjects=true -c fetch.fsck.missingEmail=error \
+		clone bundle-fsck/bad.bundle bundle-fsck-error 2>err &&
 	test_grep "missingEmail" err
 '
 

transport.c

@@ -19,6 +19,7 @@
 #include "branch.h"
 #include "url.h"
 #include "submodule.h"
+#include "strbuf.h"
 #include "string-list.h"
 #include "oid-array.h"
 #include "sigchain.h"
@@ -172,6 +173,19 @@ static struct ref *get_refs_from_bundle(struct transport *transport,
 	return result;
 }
 
+static int fetch_fsck_config_cb(const char *var, const char *value,
+				const struct config_context *ctx UNUSED, void *cb)
+{
+	struct strbuf *msg_types = cb;
+	int ret;
+
+	ret = fetch_pack_fsck_config(var, value, msg_types);
+	if (ret > 0)
+		return 0;
+
+	return ret;
+}
+
 static int fetch_refs_from_bundle(struct transport *transport,
 				  int nr_heads UNUSED,
 				  struct ref **to_fetch UNUSED)
@@ -181,18 +195,24 @@ static int fetch_refs_from_bundle(struct transport *transport,
 	};
 	struct bundle_transport_data *data = transport->data;
 	struct strvec extra_index_pack_args = STRVEC_INIT;
+	struct strbuf msg_types = STRBUF_INIT;
 	int ret;
 
 	if (transport->progress)
 		strvec_push(&extra_index_pack_args, "-v");
 
 	if (!data->get_refs_from_bundle_called)
 		get_refs_from_bundle_inner(transport);
+
+	git_config(fetch_fsck_config_cb, &msg_types);
+	opts.fsck_msg_types = msg_types.buf;
+
 	ret = unbundle(the_repository, &data->header, data->fd,
 		       &extra_index_pack_args, &opts);
 	transport->hash_algo = data->header.hash_algo;
 
 	strvec_clear(&extra_index_pack_args);
+	strbuf_release(&msg_types);
 	return ret;
 }