/*
 * Copyright (c) 2022 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 "blob_fuzzer.h"

#include <cstdint>
#include <vector>

#include "securec.h"
#include "types.h"
#include "blob.h"

using namespace OHOS::DistributedKv;
namespace OHOS {
void BlobSelfOption(const Blob &blob)
{
    blob.Empty();
    blob.Size();
    blob.Data();
    blob.ToString();
    blob.RawSize();
}

void BlobEachOtherOption(const Blob &blob1, const Blob &blob2)
{
    blob1.Compare(blob2);
    Blob blobOut;
    blob1.Compare(blobOut);
    blob1.StartsWith(blob2);
}

void BlobOption(const Blob &blob)
{
    BlobSelfOption(blob);
    Blob blobTmp(blob);
    BlobEachOtherOption(blob, blobTmp);

    Blob blobPrefix = { "fuzz" };
    blobTmp = blobPrefix.ToString() + blob.ToString();
    if (blobPrefix[0] == blobTmp[0] && (!(blobPrefix == blobTmp))) {
        BlobEachOtherOption(blobTmp, blobPrefix);
    }
}
} // namespace OHOS

/* Fuzzer entry point */
extern "C" int LLVMFuzzerTestOneInput(const uint8_t *data, size_t size)
{
    /* Run your code on data */
    std::string fuzzStr(reinterpret_cast<const char *>(data), size);
    std::vector<uint8_t> fuzzVec(fuzzStr.begin(), fuzzStr.end());

    int count = 10;
    char str[count + 1];
    auto ret = memcpy_s(str, count + 1, data, std::min(static_cast<size_t>(count + 1), size));
    if (ret != EOK) {
        return 0;
    }
    str[count] = '\0';
    Blob blob1(str);
    blob1 = str;
    Blob blob2(fuzzStr);
    blob2 = fuzzStr;
    Blob blob3(fuzzVec);
    Blob blob4(str, count + 1);
    Blob blob5(blob4);
    Blob blob6(std::move(blob5));
    Blob blob7 = blob6;
    blob7 = Blob(blob6);
    auto buffer = std::make_unique<uint8_t[]>(count);
    uint8_t *writePtr = buffer.get();
    Blob blob8(fuzzStr);
    blob8.WriteToBuffer(writePtr, count);
    OHOS::BlobOption(blob8);

    return 0;
}