1 /*
2 * Copyright (c) 2021-2022 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
FakeShowParam(ParamHandle handle,void * cookie)24 static void FakeShowParam(ParamHandle handle, void *cookie)
25 {
26 Cookie *nameAndValue = reinterpret_cast<Cookie*>(cookie);
27 char *name = nameAndValue->data;
28 unsigned int nameLen = nameAndValue->size;
29 char value[PARAM_CONST_VALUE_LEN_MAX] = {0};
30 SystemGetParameterName(handle, name, nameLen);
31 uint32_t size = PARAM_CONST_VALUE_LEN_MAX;
32 SystemGetParameterValue(handle, value, &size);
33 printf("\t%s = %s \n", name, value);
34 }
35
36 namespace OHOS {
FuzzSystemTraversalParameter(const uint8_t * data,size_t size)37 bool FuzzSystemTraversalParameter(const uint8_t* data, size_t size)
38 {
39 bool result = false;
40 CloseStdout();
41 Cookie instance = {0, nullptr};
42 Cookie *cookie = &instance;
43 if (size == 0) {
44 return false;
45 }
46 if (size > PARAM_CONST_VALUE_LEN_MAX + PARAM_NAME_LEN_MAX) {
47 return true;
48 }
49 cookie->data = static_cast<char *>(malloc(size));
50 if (cookie->data == nullptr) {
51 return true;
52 }
53 cookie->size = size;
54 std::string str(reinterpret_cast<const char*>(data), size - 1);
55 int ret = memcpy_s(cookie->data, size, str.c_str(), size);
56 if (ret != EOK) {
57 return false;
58 }
59 if (!SystemTraversalParameter(nullptr, FakeShowParam, reinterpret_cast<void*>(cookie))) {
60 result = true;
61 }
62 free(cookie->data);
63 cookie->data = nullptr;
64 cookie->size = 0;
65 return result;
66 }
67 }
68
69 /* Fuzzer entry point */
LLVMFuzzerTestOneInput(const uint8_t * data,size_t size)70 extern "C" int LLVMFuzzerTestOneInput(const uint8_t* data, size_t size)
71 {
72 /* Run your code on data */
73 OHOS::FuzzSystemTraversalParameter(data, size);
74 return 0;
75 }
76