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 "formcallermgr_fuzzer.h"
17
18 #include <cstddef>
19 #include <cstdint>
20
21 #define private public
22 #define protected public
23 #include "form_caller_mgr.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 FormCallerMgr formCallerMgr;
41 int64_t formId = 1;
42 formCallerMgr.RemoveFormHostCaller(formId);
43 sptr<IRemoteObject> callerToken = nullptr;
44 formCallerMgr.RemoveFormHostCaller(callerToken);
45 wptr<IRemoteObject> remote = nullptr;
46 formCallerMgr.OnHostCallBackDied(remote);
47 sptr<IRemoteObject> remotes = nullptr;
48 formCallerMgr.HandleHostCallBackDiedTask(remotes);
49 std::vector<std::shared_ptr<FormProviderCaller>> formProviderCallers;
50 std::shared_ptr<FormProviderCaller> formProviderCaller = nullptr;
51 formProviderCallers.emplace_back(formProviderCaller);
52 formCallerMgr.GetFormProviderCaller(formId, formProviderCallers);
53 formCallerMgr.RemoveFormProviderCaller(formId, callerToken);
54 formCallerMgr.RemoveFormProviderCaller(callerToken);
55 formCallerMgr.OnProviderCallBackDied(remote);
56 formCallerMgr.HandleProviderCallBackDiedTask(remotes);
57 formCallerMgr.GetEventHandler();
58 return formCallerMgr.GetFormHostCaller(formId) == nullptr;
59 }
60 }
61
62 /* Fuzzer entry point */
LLVMFuzzerTestOneInput(const uint8_t * data,size_t size)63 extern "C" int LLVMFuzzerTestOneInput(const uint8_t* data, size_t size)
64 {
65 /* Run your code on data */
66 if (data == nullptr) {
67 return 0;
68 }
69
70 if (size < OHOS::U32_AT_SIZE) {
71 return 0;
72 }
73
74 /* Validate the length of size */
75 if (size == 0 || size > OHOS::FOO_MAX_LEN) {
76 return 0;
77 }
78
79 char* ch = (char *)malloc(size + 1);
80 if (ch == nullptr) {
81 return 0;
82 }
83
84 (void)memset_s(ch, size + 1, 0x00, size + 1);
85 if (memcpy_s(ch, size, data, size) != EOK) {
86 free(ch);
87 ch = nullptr;
88 return 0;
89 }
90
91 OHOS::DoSomethingInterestingWithMyAPI(ch, size);
92 free(ch);
93 ch = nullptr;
94 return 0;
95 }
96
97