DO NOT MERGE Add initial batch of inputFlinger fuzzers
This batch of fuzzers is focused on the input Mappers. These fuzzers are
not host_supported, and must be run on-device. Followup CLs containing
additional inputflinger fuzzers will rely on the FuzzContainer.h and
MapperHelpers.h header files.
Fuzzers included:
- CursorInputFuzzer
- KeyboardInputFuzzer
- MultiTouchInputFuzzer
- SwitchInputFuzzer
Test: Tested on a pixel 3a with HWASAN. Accurate % coverage information is
not available due to the large number of shared libraries included
in runs built with hwasan interfering with PC Count information
(increasing the total PC count to ~682,000).
Signed-off-by: Michael Ensing <michael.ensing@leviathansecurity.com>
Change-Id: Id39205c691f54c516f8a452293cb098382019335
diff --git a/services/inputflinger/tests/fuzzers/FuzzContainer.h b/services/inputflinger/tests/fuzzers/FuzzContainer.h
new file mode 100644
index 0000000..84f0566
--- /dev/null
+++ b/services/inputflinger/tests/fuzzers/FuzzContainer.h
@@ -0,0 +1,84 @@
+/*
+ * Copyright 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.
+ */
+
+#pragma once
+
+#include <InputDevice.h>
+#include <InputMapper.h>
+#include <InputReader.h>
+#include <MapperHelpers.h>
+#include <fuzzer/FuzzedDataProvider.h>
+
+namespace android {
+
+class FuzzContainer {
+ int32_t meventID;
+ std::shared_ptr<FuzzEventHub> mFuzzEventHub;
+ sp<FuzzInputReaderPolicy> mFuzzPolicy;
+ sp<FuzzInputListener> mFuzzListener;
+ std::unique_ptr<FuzzInputReaderContext> mFuzzContext;
+ std::unique_ptr<InputDevice> mFuzzDevice;
+ InputReaderConfiguration mPolicyConfig;
+ std::shared_ptr<FuzzedDataProvider> fdp;
+
+public:
+ FuzzContainer(std::shared_ptr<FuzzedDataProvider> fdp) : fdp(fdp) {
+ // Setup parameters.
+ std::string deviceName = fdp->ConsumeRandomLengthString(16);
+ std::string deviceLocation = fdp->ConsumeRandomLengthString(12);
+ int32_t deviceID = fdp->ConsumeIntegralInRange<int32_t>(0, 5);
+ int32_t deviceGeneration = fdp->ConsumeIntegralInRange<int32_t>(0, 5);
+ meventID = fdp->ConsumeIntegral<int32_t>();
+
+ // Create mocked objects.
+ mFuzzEventHub = std::make_shared<FuzzEventHub>(fdp);
+ mFuzzPolicy = new FuzzInputReaderPolicy(fdp);
+ mFuzzListener = new FuzzInputListener();
+ mFuzzContext = std::make_unique<FuzzInputReaderContext>(mFuzzEventHub, mFuzzPolicy,
+ mFuzzListener, fdp);
+
+ InputDeviceIdentifier identifier;
+ identifier.name = deviceName;
+ identifier.location = deviceLocation;
+ mFuzzDevice = std::make_unique<InputDevice>(mFuzzContext.get(), deviceID, deviceGeneration,
+ identifier);
+ mFuzzPolicy->getReaderConfiguration(&mPolicyConfig);
+ }
+
+ ~FuzzContainer() {}
+
+ void configureDevice() {
+ nsecs_t arbitraryTime = fdp->ConsumeIntegral<nsecs_t>();
+ mFuzzDevice->configure(arbitraryTime, &mPolicyConfig, 0);
+ mFuzzDevice->reset(arbitraryTime);
+ }
+
+ void addProperty(const String8& key, const String8& value) {
+ mFuzzEventHub->addProperty(key, value);
+ configureDevice();
+ }
+
+ InputReaderConfiguration& getPolicyConfig() { return mPolicyConfig; }
+
+ template <class T, typename... Args>
+ T& getMapper(Args... args) {
+ T& mapper = mFuzzDevice->addMapper<T>(fdp->ConsumeIntegral<int32_t>(), args...);
+ configureDevice();
+ return mapper;
+ }
+};
+
+} // namespace android