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 "formsharemgr_fuzzer.h"
17
18 #include <cstddef>
19 #include <cstdint>
20
21 #define private public
22 #define protected public
23 #include "form_share_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 FormShareMgr formShareMgr;
41 int64_t formId = static_cast<int64_t>(GetU32Data(data));
42 std::string deviceId(data, size);
43 sptr<IRemoteObject> callerToken = nullptr;
44 int64_t requestCode = static_cast<int64_t>(GetU32Data(data));
45 formShareMgr.ShareForm(formId, deviceId, callerToken, requestCode);
46 FormShareInfo info;
47 formShareMgr.HandleRecvFormShareInfoFromRemoteTask(info);
48 formShareMgr.CheckFormShareInfo(info);
49 formShareMgr.MakeFormShareInfoKey(info);
50 Want want;
51 formShareMgr.MakeFormShareInfoKey(want);
52 formShareMgr.StartFormUser(info);
53 std::string bundleName(data, size);
54 std::string moduleName(data, size);
55 formShareMgr.IsExistFormPackage(bundleName, moduleName);
56 std::string formShareInfoKey(data, size);
57 formShareMgr.RemoveFormShareInfo(formShareInfoKey);
58 std::shared_ptr<FormFreeInstallOperator> freeInstallOperator = nullptr;
59 formShareMgr.FinishFreeInstallTask(freeInstallOperator);
60 int32_t resultCode = static_cast<int32_t>(GetU32Data(data));
61 formShareMgr.OnInstallFinished(freeInstallOperator, resultCode, formShareInfoKey);
62 int64_t eventId = static_cast<int64_t>(GetU32Data(data));
63 formShareMgr.HandleFormShareInfoTimeout(eventId);
64 formShareMgr.HandleFreeInstallTimeout(eventId);
65 WantParams wantParams;
66 formShareMgr.AddProviderData(want, wantParams);
67 formShareMgr.IsShareForm(want);
68 int64_t msg = static_cast<int64_t>(GetU32Data(data));
69 formShareMgr.OnEventTimeoutResponse(msg, eventId);
70 formShareMgr.RecvFormShareInfoFromRemote(info);
71 formShareMgr.CheckFormPackage(info, formShareInfoKey);
72 return true;
73 }
74 }
75
76 /* Fuzzer entry point */
LLVMFuzzerTestOneInput(const uint8_t * data,size_t size)77 extern "C" int LLVMFuzzerTestOneInput(const uint8_t* data, size_t size)
78 {
79 /* Run your code on data */
80 if (data == nullptr) {
81 return 0;
82 }
83
84 if (size < OHOS::U32_AT_SIZE) {
85 return 0;
86 }
87
88 /* Validate the length of size */
89 if (size == 0 || size > OHOS::FOO_MAX_LEN) {
90 return 0;
91 }
92
93 char* ch = static_cast<char*>(malloc(size + 1));
94 if (ch == nullptr) {
95 return 0;
96 }
97
98 (void)memset_s(ch, size + 1, 0x00, size + 1);
99 if (memcpy_s(ch, size + 1, data, size) != EOK) {
100 free(ch);
101 ch = nullptr;
102 return 0;
103 }
104
105 OHOS::DoSomethingInterestingWithMyAPI(ch, size);
106 free(ch);
107 ch = nullptr;
108 return 0;
109 }
110
111