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/*
* Copyright (C) 2023 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 <binder/RecordedTransaction.h>
#include <fuzzbinder/random_parcel.h>
#include <filesystem>
#include <string>
#include "fuzzer/FuzzedDataProvider.h"
using android::fillRandomParcel;
using android::binder::unique_fd;
extern "C" int LLVMFuzzerTestOneInput(const uint8_t* data, size_t size) {
FuzzedDataProvider provider = FuzzedDataProvider(data, size);
android::String16 interfaceName =
android::String16(provider.ConsumeRandomLengthString().c_str());
uint32_t code = provider.ConsumeIntegral<uint32_t>();
uint32_t flags = provider.ConsumeIntegral<uint32_t>();
time_t sec = provider.ConsumeIntegral<time_t>();
long nsec = provider.ConsumeIntegral<long>();
timespec timestamp = {.tv_sec = sec, .tv_nsec = nsec};
android::status_t transactionStatus = provider.ConsumeIntegral<android::status_t>();
std::vector<uint8_t> bytes = provider.ConsumeBytes<uint8_t>(
provider.ConsumeIntegralInRange<size_t>(0, provider.remaining_bytes()));
// same options so that FDs and binders could be shared in both Parcels
android::RandomParcelOptions options;
android::Parcel p0, p1;
fillRandomParcel(&p0, FuzzedDataProvider(bytes.data(), bytes.size()), &options);
fillRandomParcel(&p1, std::move(provider), &options);
auto transaction =
android::binder::debug::RecordedTransaction::fromDetails(interfaceName, code, flags,
timestamp, p0, p1,
transactionStatus);
if (transaction.has_value()) {
std::FILE* intermediateFile = std::tmpfile();
unique_fd fdForWriting(dup(fileno(intermediateFile)));
auto writeStatus [[maybe_unused]] = transaction.value().dumpToFile(fdForWriting);
std::fclose(intermediateFile);
}
return 0;
}
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