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 "formcachemgr_fuzzer.h"
17
18 #include <cstddef>
19 #include <cstdint>
20
21 #define private public
22 #define protected public
23 #include "form_cache_mgr.h"
24 #include "form_event_handler.h"
25 #undef private
26 #undef protected
27 #include "securec.h"
28
29 using namespace OHOS::AppExecFwk;
30
31 namespace OHOS {
32 constexpr size_t FOO_MAX_LEN = 1024;
33 constexpr size_t U32_AT_SIZE = 4;
GetU32Data(const char * ptr)34 uint32_t GetU32Data(const char* ptr)
35 {
36 // convert fuzz input data to an integer
37 return (ptr[0] << 24) | (ptr[1] << 16) | (ptr[2] << 8) | ptr[3];
38 }
DoSomethingInterestingWithMyAPI(const char * data,size_t size)39 bool DoSomethingInterestingWithMyAPI(const char* data, size_t size)
40 {
41 FormCacheMgr formCacheMgr;
42 int64_t formId = static_cast<int64_t>(GetU32Data(data));
43 std::string datas(data, size);
44 formCacheMgr.GetData(formId, datas);
45 formCacheMgr.AddData(formId, datas);
46 formCacheMgr.DeleteData(formId);
47 formCacheMgr.UpdateData(formId, datas);
48 std::shared_ptr<AppExecFwk::EventRunner> runner = nullptr;
49 FormEventHandler formEventHandler(runner);
50 AppExecFwk::InnerEvent::Pointer event = AppExecFwk::InnerEvent::Get();
51 formEventHandler.ProcessEvent(event);
52 formEventHandler.GetEventId();
53 std::shared_ptr<FormEventTimeoutObserver> observer = nullptr;
54 formEventHandler.RegisterEventTimeoutObserver(observer);
55 formEventHandler.UnregisterEventTimeoutObserver(observer);
56 return formCacheMgr.IsExist(formId);
57 }
58 }
59
60 /* Fuzzer entry point */
LLVMFuzzerTestOneInput(const uint8_t * data,size_t size)61 extern "C" int LLVMFuzzerTestOneInput(const uint8_t* data, size_t size)
62 {
63 /* Run your code on data */
64 if (data == nullptr) {
65 return 0;
66 }
67
68 if (size < OHOS::U32_AT_SIZE) {
69 return 0;
70 }
71
72 /* Validate the length of size */
73 if (size == 0 || size > OHOS::FOO_MAX_LEN) {
74 return 0;
75 }
76
77 char* ch = (char *)malloc(size + 1);
78 if (ch == nullptr) {
79 return 0;
80 }
81
82 (void)memset_s(ch, size + 1, 0x00, size + 1);
83 if (memcpy_s(ch, size, data, size) != EOK) {
84 free(ch);
85 ch = nullptr;
86 return 0;
87 }
88
89 OHOS::DoSomethingInterestingWithMyAPI(ch, size);
90 free(ch);
91 ch = nullptr;
92 return 0;
93 }
94
95