96 lines
3.7 KiB
C++
96 lines
3.7 KiB
C++
/*
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* Copyright 2021 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#include <fuzzer/FuzzedDataProvider.h>
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#include "dispatcher/LatencyTracker.h"
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namespace android {
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namespace inputdispatcher {
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/**
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* A processor of InputEventTimelines that does nothing with the provided data.
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*/
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class EmptyProcessor : public InputEventTimelineProcessor {
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public:
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/**
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* Just ignore the provided timeline
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*/
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void processTimeline(const InputEventTimeline& timeline) override {
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for (const auto& [token, connectionTimeline] : timeline.connectionTimelines) {
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connectionTimeline.isComplete();
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}
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};
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};
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static sp<IBinder> getConnectionToken(FuzzedDataProvider& fdp,
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std::array<sp<IBinder>, 10>& tokens) {
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const bool useExistingToken = fdp.ConsumeBool();
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if (useExistingToken) {
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return tokens[fdp.ConsumeIntegralInRange<size_t>(0ul, tokens.size() - 1)];
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}
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return new BBinder();
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}
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extern "C" int LLVMFuzzerTestOneInput(uint8_t* data, size_t size) {
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FuzzedDataProvider fdp(data, size);
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EmptyProcessor emptyProcessor;
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LatencyTracker tracker(&emptyProcessor);
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// Make some pre-defined tokens to ensure that some timelines are complete.
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std::array<sp<IBinder> /*token*/, 10> predefinedTokens;
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for (size_t i = 0; i < predefinedTokens.size(); i++) {
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predefinedTokens[i] = new BBinder();
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}
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// Randomly invoke LatencyTracker api's until randomness is exhausted.
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while (fdp.remaining_bytes() > 0) {
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fdp.PickValueInArray<std::function<void()>>({
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[&]() -> void {
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int32_t inputEventId = fdp.ConsumeIntegral<int32_t>();
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int32_t isDown = fdp.ConsumeBool();
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nsecs_t eventTime = fdp.ConsumeIntegral<nsecs_t>();
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nsecs_t readTime = fdp.ConsumeIntegral<nsecs_t>();
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tracker.trackListener(inputEventId, isDown, eventTime, readTime);
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},
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[&]() -> void {
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int32_t inputEventId = fdp.ConsumeIntegral<int32_t>();
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sp<IBinder> connectionToken = getConnectionToken(fdp, predefinedTokens);
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nsecs_t deliveryTime = fdp.ConsumeIntegral<nsecs_t>();
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nsecs_t consumeTime = fdp.ConsumeIntegral<nsecs_t>();
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nsecs_t finishTime = fdp.ConsumeIntegral<nsecs_t>();
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tracker.trackFinishedEvent(inputEventId, connectionToken, deliveryTime,
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consumeTime, finishTime);
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},
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[&]() -> void {
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int32_t inputEventId = fdp.ConsumeIntegral<int32_t>();
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sp<IBinder> connectionToken = getConnectionToken(fdp, predefinedTokens);
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std::array<nsecs_t, GraphicsTimeline::SIZE> graphicsTimeline;
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for (size_t i = 0; i < graphicsTimeline.size(); i++) {
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graphicsTimeline[i] = fdp.ConsumeIntegral<nsecs_t>();
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}
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tracker.trackGraphicsLatency(inputEventId, connectionToken, graphicsTimeline);
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},
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})();
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}
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return 0;
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}
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} // namespace inputdispatcher
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} // namespace android
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