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 "formerrors_fuzzer.h"
17
18 #include <cstddef>
19 #include <cstdint>
20
21 #define private public
22 #define protected public
23 #include "form_errors.h"
24 #undef private
25 #undef protected
26 #include "securec.h"
27
28 using namespace OHOS::AppExecFwk;
29
30 namespace OHOS {
31 constexpr size_t U32_AT_SIZE = 4;
GetU32Data(const char * ptr)32 uint32_t GetU32Data(const char* ptr)
33 {
34 // convert fuzz input data to an integer
35 return (ptr[0] << 24) | (ptr[1] << 16) | (ptr[2] << 8) | ptr[3];
36 }
DoSomethingInterestingWithMyAPI(const char * data,size_t size)37 bool DoSomethingInterestingWithMyAPI(const char* data, size_t size)
38 {
39 FormErrors formErrors;
40 int errorCode = static_cast<int>(GetU32Data(data));
41 formErrors.InitErrorMessageMap();
42 int32_t internalErrorCode = static_cast<int32_t>(GetU32Data(data));
43 formErrors.QueryExternalErrorCode(internalErrorCode);
44 int32_t externalErrorCode = static_cast<int32_t>(GetU32Data(data));
45 formErrors.QueryExternalErrorMessage(internalErrorCode, externalErrorCode);
46 formErrors.GetErrorMsgByExternalErrorCode(externalErrorCode);
47 return formErrors.GetErrorMessage(errorCode) == "aa";
48 }
49 }
50
51 /* Fuzzer entry point */
LLVMFuzzerTestOneInput(const uint8_t * data,size_t size)52 extern "C" int LLVMFuzzerTestOneInput(const uint8_t* data, size_t size)
53 {
54 /* Run your code on data */
55 if (data == nullptr) {
56 return 0;
57 }
58
59 if (size < OHOS::U32_AT_SIZE) {
60 return 0;
61 }
62
63 char* ch = static_cast<char*>(malloc(size + 1));
64 if (ch == nullptr) {
65 return 0;
66 }
67
68 (void)memset_s(ch, size + 1, 0x00, size + 1);
69 if (memcpy_s(ch, size + 1, data, size) != EOK) {
70 free(ch);
71 ch = nullptr;
72 return 0;
73 }
74
75 OHOS::DoSomethingInterestingWithMyAPI(ch, size);
76 free(ch);
77 ch = nullptr;
78 return 0;
79 }
80
81