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
FakeShowParam(ParamHandle handle,void * cookie)25 static 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
37 namespace OHOS {
FuzzSystemTraversalParameter(const uint8_t * data,size_t size)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 */
LLVMFuzzerTestOneInput(const uint8_t * data,size_t size)71 extern "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