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 "formprovidercaller_fuzzer.h"
17
18 #include <cstddef>
19 #include <cstdint>
20
21 #define private public
22 #define protected public
23 #include "form_provider_caller.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 FOO_MAX_LEN = 1024;
32 constexpr size_t U32_AT_SIZE = 4;
GetU32Data(const char * ptr)33 uint32_t GetU32Data(const char* ptr)
34 {
35 // convert fuzz input data to an integer
36 return (ptr[0] << 24) | (ptr[1] << 16) | (ptr[2] << 8) | ptr[3];
37 }
DoSomethingInterestingWithMyAPI(const char * data,size_t size)38 bool DoSomethingInterestingWithMyAPI(const char* data, size_t size)
39 {
40 sptr<IRemoteObject> callerToken = nullptr;
41 FormProviderCaller formProviderCaller(callerToken);
42 formProviderCaller.IsSameToken(callerToken);
43 FormJsInfo formJsInfo;
44 int64_t formId = 1;
45 formProviderCaller.GetFormJsInfo(formId, formJsInfo);
46 formProviderCaller.IsFormEmpty();
47 sptr<IRemoteObject> token = nullptr;
48 formProviderCaller.OnAcquire(formJsInfo, token);
49 FormProviderData formProviderData;
50 formProviderCaller.UpdateForm(formId, formProviderData);
51 formProviderCaller.UpdateForm(formJsInfo);
52 formProviderCaller.AddForm(formJsInfo);
53 formProviderCaller.DeleteForm(formId);
54 return formProviderCaller.HasForm(formId);
55 }
56 }
57
58 /* Fuzzer entry point */
LLVMFuzzerTestOneInput(const uint8_t * data,size_t size)59 extern "C" int LLVMFuzzerTestOneInput(const uint8_t* data, size_t size)
60 {
61 /* Run your code on data */
62 if (data == nullptr) {
63 return 0;
64 }
65
66 if (size < OHOS::U32_AT_SIZE) {
67 return 0;
68 }
69
70 /* Validate the length of size */
71 if (size == 0 || size > OHOS::FOO_MAX_LEN) {
72 return 0;
73 }
74
75 char* ch = static_cast<char*>(malloc(size + 1));
76 if (ch == nullptr) {
77 return 0;
78 }
79
80 (void)memset_s(ch, size + 1, 0x00, size + 1);
81 if (memcpy_s(ch, size + 1, data, size) != EOK) {
82 free(ch);
83 ch = nullptr;
84 return 0;
85 }
86
87 OHOS::DoSomethingInterestingWithMyAPI(ch, size);
88 free(ch);
89 ch = nullptr;
90 return 0;
91 }
92
93