xref: /foundation/resourceschedule/soc_perf/test/fuzztest/loadconfigxmlfile_fuzzer/loadconfigxmlfile_fuzzer.cpp

/*
 * Copyright (c) 2022-2023 Huawei Device Co., Ltd.
 * 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 "loadconfigxmlfile_fuzzer.h"

#define private public
#include "socperf.h"

namespace OHOS {
namespace SOCPERF {
    const std::string fuzzedFile = "myFuzzed.xml";
    const int32_t FILE_RETURN_SUCCESS = 1;
    std::mutex mutexLock;
    std::unique_ptr<SocPerf> socPerf = nullptr;

    bool DoInit()
    {
        std::lock_guard<std::mutex> lock(mutexLock);
        if (socPerf) {
            return true;
        }
        socPerf = std::make_unique<SocPerf>();
        return socPerf != nullptr;
    }

    void DoSomethingInterestingWithMyAPI(const uint8_t* data, size_t size)
    {
        if (!DoInit()) {
            return;
        }

        // generate fuzzed xml
        FILE *pFile = fopen(fuzzedFile.c_str(), "wb");
        if (!pFile) {
            return;
        }

        int32_t retCode = fwrite(reinterpret_cast<const void*>(data), size, 1, pFile); // 1 means count=1
        if (retCode < FILE_RETURN_SUCCESS) {
            (void)fclose(pFile);
            pFile = nullptr;
            return;
        }

        (void)fclose(pFile);
        pFile = nullptr;
        socPerf->socPerfConfig_.LoadConfigXmlFile(fuzzedFile);
    }
} // namespace SOCPERF
} // namespace OHOS

/* Fuzzer entry point */
extern "C" int LLVMFuzzerTestOneInput(const uint8_t* data, size_t size)
{
    /* Run your code on data */
    OHOS::SOCPERF::DoSomethingInterestingWithMyAPI(data, size);
    return 0;
}