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 #include "form_serial_queue.h"
26 #undef private
27 #undef protected
28 #include "securec.h"
29
30 using namespace OHOS::AppExecFwk;
31
32 namespace OHOS {
33 constexpr size_t U32_AT_SIZE = 4;
34 constexpr int64_t EVENT_MSG = 1;
35 constexpr int64_t EVENT_ID = 2;
GetU32Data(const char * ptr)36 uint32_t GetU32Data(const char* ptr)
37 {
38 // convert fuzz input data to an integer
39 return (ptr[0] << 24) | (ptr[1] << 16) | (ptr[2] << 8) | ptr[3];
40 }
DoSomethingInterestingWithMyAPI(const char * data,size_t size)41 bool DoSomethingInterestingWithMyAPI(const char* data, size_t size)
42 {
43 FormCacheMgr formCacheMgr;
44 int64_t formId = static_cast<int64_t>(GetU32Data(data));
45 std::string datas(data, size);
46 std::map<std::string, std::pair<sptr<FormAshmem>, int32_t>> imageDataMap;
47 formCacheMgr.GetData(formId, datas, imageDataMap);
48
49 FormProviderData formProviderData;
50 formProviderData.SetDataString(datas);
51 formCacheMgr.AddData(formId, formProviderData);
52
53 formCacheMgr.DeleteData(formId);
54 FormEventHandler formEventHandler(nullptr);
55 AppExecFwk::InnerEvent::Pointer event = AppExecFwk::InnerEvent::Get();
56 formEventHandler.ProcessEvent(EVENT_MSG, EVENT_ID);
57 formEventHandler.GetEventId();
58 std::shared_ptr<FormEventTimeoutObserver> observer = nullptr;
59 formEventHandler.RegisterEventTimeoutObserver(observer);
60 formEventHandler.UnregisterEventTimeoutObserver(observer);
61 return formCacheMgr.NeedAcquireProviderData(formId);
62 }
63 }
64
65 /* Fuzzer entry point */
LLVMFuzzerTestOneInput(const uint8_t * data,size_t size)66 extern "C" int LLVMFuzzerTestOneInput(const uint8_t* data, size_t size)
67 {
68 /* Run your code on data */
69 if (data == nullptr) {
70 return 0;
71 }
72
73 if (size < OHOS::U32_AT_SIZE) {
74 return 0;
75 }
76
77 char* ch = static_cast<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 + 1, 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