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/*
* Copyright (C) 2024 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 <record_file.h>
#include "command.h"
#include "fuzzer/FuzzedDataProvider.h"
#include "test_util.h"
using namespace simpleperf;
using namespace std;
using namespace android;
class SimplePerfReportFuzzer {
public:
SimplePerfReportFuzzer(const uint8_t* data, size_t size) : mFdp(data, size) {
/**
* Use maximum of 80% of buffer to write in FD and save at least 20% for fuzzing other APIs
*/
const int32_t dataSize = mFdp.ConsumeIntegralInRange<int32_t>(0, (size * 80) / 100);
std::vector<uint8_t> dataPointer = mFdp.ConsumeBytes<uint8_t>(dataSize);
android::base::WriteFully(mTempfile.fd, dataPointer.data(), dataPointer.size());
RegisterDumpRecordCommand();
}
void process();
private:
FuzzedDataProvider mFdp;
TemporaryFile mTempfile;
void TestDumpCmd();
};
void SimplePerfReportFuzzer::TestDumpCmd() {
std::unique_ptr<Command> dump_cmd = CreateCommandInstance("dump");
CaptureStdout capture;
capture.Start();
dump_cmd->Run({"-i", mTempfile.path, "--dump-etm", "raw,packet,element"});
}
void SimplePerfReportFuzzer::process() {
std::unique_ptr<RecordFileReader> reader = RecordFileReader::CreateInstance(mTempfile.path);
if (!reader.get()) {
return;
}
while (mFdp.remaining_bytes()) {
auto InvokeReader = mFdp.PickValueInArray<const std::function<void()>>({
[&]() { reader->ReadCmdlineFeature(); },
[&]() { reader->ReadBuildIdFeature(); },
[&]() { reader->ReadFeatureString(mFdp.ConsumeIntegral<int32_t>() /* feature */); },
[&]() {
vector<uint8_t> buf;
bool error;
reader->ReadAuxData(mFdp.ConsumeIntegral<uint32_t>() /* cpu */,
mFdp.ConsumeIntegral<uint64_t>() /* aux_offset */,
mFdp.ConsumeIntegral<size_t>() /* size */, buf, error);
},
[&]() { reader->ReadDebugUnwindFeature(); },
[&]() { reader->DataSection(); },
[&]() {
ThreadTree thread_tree;
reader->LoadBuildIdAndFileFeatures(thread_tree);
},
});
InvokeReader();
}
TestDumpCmd();
reader->Close();
}
extern "C" int LLVMFuzzerTestOneInput(const uint8_t* data, size_t size) {
SimplePerfReportFuzzer simplePerfReportFuzzer(data, size);
simplePerfReportFuzzer.process();
return 0;
}
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