Adding multiple fuzzers for libbinder.
Adding fuzzers in libbinder for Binder, BpBinder, MemoryHeapBase, ParcelBlob, PersistableBundle, Stability, Status, and TextOutput. These follow the same framework style.
Test: Tested on a Pixel3a device for 500k iterations each.
Signed-off-by: Corbin Souffrant <corbin.souffrant@leviathansecurity.com>
Change-Id: I53b85570a3abde854b01ffefc2739b79b39af7e2
diff --git a/libs/binder/tests/fuzzers/TextOutputFuzz.cpp b/libs/binder/tests/fuzzers/TextOutputFuzz.cpp
new file mode 100644
index 0000000..c950020
--- /dev/null
+++ b/libs/binder/tests/fuzzers/TextOutputFuzz.cpp
@@ -0,0 +1,60 @@
+/*
+ * 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.
+ */
+
+#include <fuzzer/FuzzedDataProvider.h>
+
+#include <binder/Debug.h>
+#include <binder/Parcel.h>
+#include <binder/TextOutput.h>
+#include "android-base/file.h"
+#include "android-base/test_utils.h"
+
+#include <fcntl.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <cstddef>
+#include <limits>
+
+// Fuzzer for the TextOutput class. These were lifted from the existing
+// test suite.
+extern "C" int LLVMFuzzerTestOneInput(const uint8_t *data, size_t size) {
+ FuzzedDataProvider fdp(data, size);
+ CapturedStderr cap;
+
+ while (fdp.remaining_bytes() > 1) {
+ switch (fdp.ConsumeIntegral<uint8_t>() % 3) {
+ case 0: {
+ std::string input = fdp.ConsumeBytesAsString(
+ fdp.ConsumeIntegralInRange<size_t>(0, fdp.remaining_bytes()));
+ android::aerr << input << android::endl;
+ break;
+ }
+ case 1: {
+ std::string str = fdp.ConsumeRandomLengthString(fdp.remaining_bytes());
+ android::HexDump input(str.c_str(), sizeof(str.c_str()));
+ android::aerr << input << android::endl;
+ break;
+ }
+ case 2: {
+ android::TypeCode input(fdp.ConsumeIntegral<uint32_t>());
+ android::aerr << input << android::endl;
+ }
+ }
+ }
+ cap.Stop();
+
+ return 0;
+}