1/*
2 * Copyright (c) 2022 Huawei Device Co., Ltd.
3 * Licensed under the Apache License, Version 2.0 (the "License");
4 * you may not use this file except in compliance with the License.
5 * You may obtain a copy of the License at
6 *
7 * http://www.apache.org/licenses/LICENSE-2.0
8 *
9 * Unless required by applicable law or agreed to in writing, software
10 * distributed under the License is distributed on an "AS IS" BASIS,
11 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
12 * See the License for the specific language governing permissions and
13 * limitations under the License.
14 */
15
16#include "systemtraversalparameter_fuzzer.h"
17
18#include <string>
19#include "fuzz_utils.h"
20#include "init.h"
21#include "securec.h"
22#include "init_param.h"
23#include "param_init.h"
24
25static void FakeShowParam(ParamHandle handle, void *cookie)
26{
27    Cookie *nameAndValue = reinterpret_cast<Cookie*>(cookie);
28    char *name = nameAndValue->data;
29    unsigned int nameLen = nameAndValue->size;
30    char value[PARAM_CONST_VALUE_LEN_MAX] = {0};
31    SystemGetParameterName(handle, name, nameLen);
32    uint32_t size = PARAM_CONST_VALUE_LEN_MAX;
33    SystemGetParameterValue(handle, value, &size);
34    printf("\t%s = %s \n", name, value);
35}
36
37namespace OHOS {
38    bool FuzzSystemTraversalParameter(const uint8_t* data, size_t size)
39    {
40        bool result = false;
41        CloseStdout();
42        Cookie instance = {0, nullptr};
43        Cookie *cookie = &instance;
44        if (size == 0) {
45            return false;
46        }
47        if (size > PARAM_CONST_VALUE_LEN_MAX + PARAM_NAME_LEN_MAX) {
48            return true;
49        }
50        cookie->data = static_cast<char *>(calloc(1, size));
51        if (cookie->data == nullptr) {
52            return true;
53        }
54        cookie->size = size;
55        std::string str(reinterpret_cast<const char*>(data), size - 1);
56        int ret = memcpy_s(cookie->data, size, str.c_str(), size);
57        if (ret != EOK) {
58            return false;
59        }
60        if (!SystemTraversalParameter(nullptr, FakeShowParam, reinterpret_cast<void*>(cookie))) {
61            result = true;
62        }
63        free(cookie->data);
64        cookie->data = nullptr;
65        cookie->size = 0;
66        return result;
67    }
68}
69
70/* Fuzzer entry point */
71extern "C" int LLVMFuzzerTestOneInput(const uint8_t* data, size_t size)
72{
73    /* Run your code on data */
74    OHOS::FuzzSystemTraversalParameter(data, size);
75    return 0;
76}
77