trusty: Fuzzer for Gatekeeper TA
Test: /data/fuzz/arm64/trusty_gatekeeper_fuzzer/trusty_gatekeeper_fuzzer
Change-Id: If55b93b1a15c5bd9a1148ff54a859635a6e7290c
diff --git a/trusty/gatekeeper/fuzz/Android.bp b/trusty/gatekeeper/fuzz/Android.bp
new file mode 100644
index 0000000..27605aa
--- /dev/null
+++ b/trusty/gatekeeper/fuzz/Android.bp
@@ -0,0 +1,19 @@
+// Copyright (C) 2020 The Android Open Source Project
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+// http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+cc_fuzz {
+ name: "trusty_gatekeeper_fuzzer",
+ defaults: ["trusty_fuzzer_defaults"],
+ srcs: ["fuzz.cpp"],
+}
diff --git a/trusty/gatekeeper/fuzz/fuzz.cpp b/trusty/gatekeeper/fuzz/fuzz.cpp
new file mode 100644
index 0000000..b1f643f
--- /dev/null
+++ b/trusty/gatekeeper/fuzz/fuzz.cpp
@@ -0,0 +1,53 @@
+/*
+ * Copyright (C) 2020 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#undef NDEBUG
+
+#include <assert.h>
+#include <log/log.h>
+#include <stdlib.h>
+#include <trusty/fuzz/utils.h>
+#include <unistd.h>
+
+#define TIPC_DEV "/dev/trusty-ipc-dev0"
+#define GATEKEEPER_PORT "com.android.trusty.gatekeeper"
+
+extern "C" int LLVMFuzzerTestOneInput(const uint8_t* data, size_t size) {
+ static uint8_t buf[TIPC_MAX_MSG_SIZE];
+
+ android::trusty::fuzz::TrustyApp ta(TIPC_DEV, GATEKEEPER_PORT);
+
+ auto ret = ta.Connect();
+ /*
+ * If we can't connect, then assume TA crashed.
+ * TODO: Get some more info, e.g. stacks, to help Haiku dedup crashes.
+ */
+ assert(ret.ok());
+
+ /* Send message to test server */
+ ret = ta.Write(data, size);
+ if (!ret.ok()) {
+ return -1;
+ }
+
+ /* Read message from test server */
+ ret = ta.Read(&buf, sizeof(buf));
+ if (!ret.ok()) {
+ return -1;
+ }
+
+ return 0;
+}