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 "formdatamgrone_fuzzer.h"
17
18 #include <cstddef>
19 #include <cstdint>
20
21 #define private public
22 #define protected public
23 #include "form_data_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 U32_AT_SIZE = 4;
32 constexpr uint8_t ENABLE = 2;
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 FormDataMgr formDataMgr;
41 int formUserUid = static_cast<int>(GetU32Data(data));
42 std::vector<int> formUserUids;
43 formUserUids.emplace_back(formUserUid);
44 formDataMgr.IsCallingUidValid(formUserUids);
45 int64_t formId = static_cast<int64_t>(GetU32Data(data));
46 bool formTempFlag = *data % ENABLE;
47 formDataMgr.ModifyFormTempFlag(formId, formTempFlag);
48 formDataMgr.AddFormUserUid(formId, formUserUid);
49 int uid = static_cast<int>(GetU32Data(data));
50 formDataMgr.DeleteFormUserUid(formId, uid);
51 FormRecord formRecord;
52 formDataMgr.UpdateFormRecord(formId, formRecord);
53 std::string bundleName(data, size);
54 std::vector<FormRecord> formInfos;
55 formInfos.emplace_back(formRecord);
56 formDataMgr.GetFormRecord(bundleName, formInfos);
57 formDataMgr.ExistFormRecord(formId);
58 formDataMgr.HasFormUserUids(formId);
59 FormHostRecord formHostRecord;
60 std::vector<FormHostRecord> formHostRecords;
61 formHostRecords.emplace_back(formHostRecord);
62 formDataMgr.GetFormHostRecord(formId, formHostRecords);
63 sptr<IRemoteObject> callerToken = nullptr;
64 formDataMgr.DeleteHostRecord(callerToken, formId);
65 std::vector<int64_t> removedFormIds;
66 removedFormIds.emplace_back(formId);
67 formDataMgr.CleanHostRemovedForms(removedFormIds);
68 sptr<IRemoteObject> remoteHost = nullptr;
69 formDataMgr.HandleHostDied(remoteHost);
70 return true;
71 }
72 }
73
74 /* Fuzzer entry point */
LLVMFuzzerTestOneInput(const uint8_t * data,size_t size)75 extern "C" int LLVMFuzzerTestOneInput(const uint8_t* data, size_t size)
76 {
77 /* Run your code on data */
78 if (data == nullptr) {
79 return 0;
80 }
81
82 if (size < OHOS::U32_AT_SIZE) {
83 return 0;
84 }
85
86 char* ch = static_cast<char*>(malloc(size + 1));
87 if (ch == nullptr) {
88 return 0;
89 }
90
91 (void)memset_s(ch, size + 1, 0x00, size + 1);
92 if (memcpy_s(ch, size + 1, data, size) != EOK) {
93 free(ch);
94 ch = nullptr;
95 return 0;
96 }
97
98 OHOS::DoSomethingInterestingWithMyAPI(ch, size);
99 free(ch);
100 ch = nullptr;
101 return 0;
102 }
103
104