85 lines
3.4 KiB
C++
85 lines
3.4 KiB
C++
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/*
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* Copyright 2020 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 <sys/select.h>
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#include <iostream>
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#include <utils/Looper.h>
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#include "Looper_test_pipe.h"
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#include "fuzzer/FuzzedDataProvider.h"
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using android::Looper;
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using android::sp;
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// We don't want this to bog down fuzzing
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static constexpr int MAX_POLL_DELAY = 50;
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static constexpr int MAX_OPERATIONS = 500;
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void doNothing() {}
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void* doNothingPointer = reinterpret_cast<void*>(doNothing);
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static int noopCallback(int, int, void*) {
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return 0;
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}
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std::vector<std::function<void(FuzzedDataProvider*, sp<Looper>, Pipe)>> operations = {
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[](FuzzedDataProvider* dataProvider, sp<Looper> looper, Pipe) -> void {
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looper->pollOnce(dataProvider->ConsumeIntegralInRange<int>(0, MAX_POLL_DELAY));
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},
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[](FuzzedDataProvider* dataProvider, sp<Looper> looper, Pipe) -> void {
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looper->pollAll(dataProvider->ConsumeIntegralInRange<int>(0, MAX_POLL_DELAY));
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},
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// events and callback are nullptr
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[](FuzzedDataProvider* dataProvider, sp<Looper> looper, Pipe pipeObj) -> void {
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looper->addFd(pipeObj.receiveFd, dataProvider->ConsumeIntegral<int>(),
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dataProvider->ConsumeIntegral<int>(), nullptr, nullptr);
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},
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// Events is nullptr
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[](FuzzedDataProvider* dataProvider, sp<Looper> looper, Pipe pipeObj) -> void {
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looper->addFd(pipeObj.receiveFd, dataProvider->ConsumeIntegral<int>(),
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dataProvider->ConsumeIntegral<int>(), noopCallback, nullptr);
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},
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// callback is nullptr
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[](FuzzedDataProvider* dataProvider, sp<Looper> looper, Pipe pipeObj) -> void {
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looper->addFd(pipeObj.receiveFd, dataProvider->ConsumeIntegral<int>(),
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dataProvider->ConsumeIntegral<int>(), nullptr, doNothingPointer);
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},
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// callback and events both set
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[](FuzzedDataProvider* dataProvider, sp<Looper> looper, Pipe pipeObj) -> void {
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looper->addFd(pipeObj.receiveFd, dataProvider->ConsumeIntegral<int>(),
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dataProvider->ConsumeIntegral<int>(), noopCallback, doNothingPointer);
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},
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[](FuzzedDataProvider*, sp<Looper> looper, Pipe) -> void { looper->wake(); },
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[](FuzzedDataProvider*, sp<Looper>, Pipe pipeObj) -> void { pipeObj.writeSignal(); }};
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extern "C" int LLVMFuzzerTestOneInput(const uint8_t* data, size_t size) {
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Pipe pipeObj;
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FuzzedDataProvider dataProvider(data, size);
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sp<Looper> looper = new Looper(dataProvider.ConsumeBool());
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size_t opsRun = 0;
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while (dataProvider.remaining_bytes() > 0 && opsRun++ < MAX_OPERATIONS) {
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uint8_t op = dataProvider.ConsumeIntegralInRange<uint8_t>(0, operations.size() - 1);
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operations[op](&dataProvider, looper, pipeObj);
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}
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// Clear our pointer
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looper.clear();
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return 0;
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}
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