Adding java lib for fuzzService
Created a JNI interface for fuzzService and added java wrapper.
Test: m librandom_parcel_jni
Bug: 258075558
Change-Id: I5d5d35f462f902f0c2aab97963236c4b6de08639
diff --git a/core/tests/fuzzers/FuzzService/Android.bp b/core/tests/fuzzers/FuzzService/Android.bp
new file mode 100644
index 0000000..5093185
--- /dev/null
+++ b/core/tests/fuzzers/FuzzService/Android.bp
@@ -0,0 +1,28 @@
+package {
+ default_applicable_licenses: ["frameworks_base_license"],
+}
+
+java_library {
+ name: "random_parcel_lib",
+ srcs: ["FuzzBinder.java"],
+}
+
+cc_library_shared {
+ name: "librandom_parcel_jni",
+ defaults: ["service_fuzzer_defaults"],
+ srcs: [
+ "random_parcel_jni.cpp",
+ ],
+ shared_libs: [
+ "libandroid_runtime",
+ "libbase",
+ "liblog",
+ ],
+ static_libs: [
+ "libnativehelper_lazy",
+ "libbinder_random_parcel",
+ ],
+ cflags: [
+ "-Wno-unused-parameter",
+ ],
+}
diff --git a/core/tests/fuzzers/FuzzService/FuzzBinder.java b/core/tests/fuzzers/FuzzService/FuzzBinder.java
new file mode 100644
index 0000000..7c09831
--- /dev/null
+++ b/core/tests/fuzzers/FuzzService/FuzzBinder.java
@@ -0,0 +1,38 @@
+/*
+ * Copyright (C) 2022 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.
+ */
+package randomparcel;
+import android.os.IBinder;
+
+public class FuzzBinder {
+ static {
+ System.loadLibrary("random_parcel_jni");
+ }
+
+ // DO NOT REUSE: This API should be called from fuzzer to setup JNI dependencies from
+ // libandroid_runtime. THIS IS WORKAROUND. Please file a bug if you need to use this
+ public static void init() {
+ System.loadLibrary("android_runtime");
+ registerNatives();
+ }
+
+ // This API automatically fuzzes provided service
+ public static void fuzzService(IBinder binder, byte[] data) {
+ fuzzServiceInternal(binder, data);
+ }
+
+ private static native void fuzzServiceInternal(IBinder binder, byte[] data);
+ private static native int registerNatives();
+}
diff --git a/core/tests/fuzzers/FuzzService/random_parcel_jni.cpp b/core/tests/fuzzers/FuzzService/random_parcel_jni.cpp
new file mode 100644
index 0000000..c0528d5
--- /dev/null
+++ b/core/tests/fuzzers/FuzzService/random_parcel_jni.cpp
@@ -0,0 +1,37 @@
+/*
+ * Copyright (C) 2022 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.
+ */
+
+#include "random_parcel_jni.h"
+#include <android_util_Binder.h>
+#include <fuzzbinder/libbinder_driver.h>
+#include <fuzzer/FuzzedDataProvider.h>
+using namespace android;
+
+// JNI interface for fuzzService
+JNIEXPORT void JNICALL Java_randomparcel_FuzzBinder_fuzzServiceInternal(JNIEnv *env, jobject thiz, jobject javaBinder, jbyteArray fuzzData) {
+ size_t len = static_cast<size_t>(env->GetArrayLength(fuzzData));
+ uint8_t data[len];
+ env->GetByteArrayRegion(fuzzData, 0, len, reinterpret_cast<jbyte*>(data));
+
+ FuzzedDataProvider provider(data, len);
+ sp<IBinder> binder = android::ibinderForJavaObject(env, javaBinder);
+ fuzzService(binder, std::move(provider));
+}
+
+// API used by AIDL fuzzers to access JNI functions from libandroid_runtime.
+JNIEXPORT jint JNICALL Java_randomparcel_FuzzBinder_registerNatives(JNIEnv* env) {
+ return registerFrameworkNatives(env);
+}
diff --git a/core/tests/fuzzers/FuzzService/random_parcel_jni.h b/core/tests/fuzzers/FuzzService/random_parcel_jni.h
new file mode 100644
index 0000000..20a4c9d
--- /dev/null
+++ b/core/tests/fuzzers/FuzzService/random_parcel_jni.h
@@ -0,0 +1,26 @@
+/*
+ * Copyright (C) 2022 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.
+ */
+#include <jni.h>
+
+extern "C" {
+ JNIEXPORT void JNICALL Java_randomparcel_FuzzBinder_fuzzServiceInternal(JNIEnv *env, jobject thiz, jobject javaBinder, jbyteArray fuzzData);
+
+ // Function to register libandroid_runtime JNI functions with java env.
+ JNIEXPORT jint JNICALL Java_randomparcel_FuzzBinder_registerNatives(JNIEnv* env);
+
+ // Function from AndroidRuntime
+ jint registerFrameworkNatives(JNIEnv* env);
+}
diff --git a/core/tests/fuzzers/OWNERS b/core/tests/fuzzers/OWNERS
new file mode 100644
index 0000000..b972ac0
--- /dev/null
+++ b/core/tests/fuzzers/OWNERS
@@ -0,0 +1,2 @@
+smoreland@google.com
+waghpawan@google.com