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 "geterrormsg_fuzzer.h"
17
18 #include <cstddef>
19 #include <cstdint>
20
21 #include "form_mgr.h"
22 #include "securec.h"
23
24 using namespace OHOS::AppExecFwk;
25
26 namespace OHOS {
27 constexpr size_t U32_AT_SIZE = 4;
GetU32Data(const char * ptr)28 uint32_t GetU32Data(const char* ptr)
29 {
30 // convert fuzz input data to an integer
31 return (ptr[0] << 24) | (ptr[1] << 16) | (ptr[2] << 8) | ptr[3];
32 }
DoSomethingInterestingWithMyAPI(const char * data,size_t size)33 bool DoSomethingInterestingWithMyAPI(const char* data, size_t size)
34 {
35 int errorCode = static_cast<int>(GetU32Data(data));
36 if (FormMgr::GetInstance().GetErrorMsg(errorCode).empty()) {
37 std::cout << "GetErrorMsg failed" << std::endl;
38 return false;
39 }
40
41 return true;
42 }
43 }
44
45 /* Fuzzer entry point */
LLVMFuzzerTestOneInput(const uint8_t * data,size_t size)46 extern "C" int LLVMFuzzerTestOneInput(const uint8_t* data, size_t size)
47 {
48 /* Run your code on data */
49 if (data == nullptr) {
50 std::cout << "invalid data" << std::endl;
51 return 0;
52 }
53
54 if (size < OHOS::U32_AT_SIZE) {
55 return 0;
56 }
57
58 char* ch = new char[size + 1];
59 if (ch == nullptr) {
60 std::cout << "new failed." << std::endl;
61 return 0;
62 }
63
64 (void)memset_s(ch, size + 1, 0x00, size + 1);
65 if (memcpy_s(ch, size + 1, data, size) != EOK) {
66 std::cout << "copy failed." << std::endl;
67 delete[] ch;
68 ch = nullptr;
69 return 0;
70 }
71
72 OHOS::DoSomethingInterestingWithMyAPI(ch, size);
73 delete[] ch;
74 ch = nullptr;
75 return 0;
76 }
77
78