/*
 * Copyright (c) 2024 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.
 */

#ifndef TEST_FUZZTEST_COMMON_DATA_GENERATE_H
#define TEST_FUZZTEST_COMMON_DATA_GENERATE_H

#include <string>
#include <securec.h>
#include "ibuffer_consumer_listener.h"

namespace g_fuzzCommon {
constexpr size_t STR_LEN = 10;
const uint8_t* g_data = nullptr;
size_t g_size = 0;
size_t g_pos;


/*
* describe: get data from outside untrusted data(g_data) which size is according to sizeof(T)
* tips: only support basic type
*/
template<class T>
T GetData()
{
    T object {};
    size_t objectSize = sizeof(object);
    if (g_data == nullptr || objectSize > g_size - g_pos) {
        return object;
    }
    auto ret = memcpy_s(&object, objectSize, g_data + g_pos, objectSize);
    if (ret != EOK) {
        return {};
    }
    g_pos += objectSize;
    return object;
}

/*
* get a string from g_data
*/
[[maybe_unused]] std::string GetStringFromData(int strlen)
{
    char cstr[strlen];
    cstr[strlen - 1] = '\0';
    for (int i = 0; i < strlen - 1; i++) {
        cstr[i] = GetData<char>();
    }
    std::string str(cstr);
    return str;
}
}
namespace OHOS {
class BufferConsumerListener : public IBufferConsumerListener {
public:
    void OnBufferAvailable() override
    {
    }
};
}
#endif