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 FOO_MAX_LEN = 1024;
32 constexpr size_t U32_AT_SIZE = 4;
33 constexpr uint8_t ENABLE = 2;
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 FormDataMgr formDataMgr;
42 int formUserUid = static_cast<int>(GetU32Data(data));
43 std::vector<int> formUserUids;
44 formUserUids.emplace_back(formUserUid);
45 formDataMgr.IsCallingUidValid(formUserUids);
46 int64_t formId = static_cast<int64_t>(GetU32Data(data));
47 bool formTempFlag = *data % ENABLE;
48 formDataMgr.ModifyFormTempFlag(formId, formTempFlag);
49 formDataMgr.AddFormUserUid(formId, formUserUid);
50 int uid = static_cast<int>(GetU32Data(data));
51 formDataMgr.DeleteFormUserUid(formId, uid);
52 FormRecord formRecord;
53 formDataMgr.UpdateFormRecord(formId, formRecord);
54 std::string bundleName(data, size);
55 std::vector<FormRecord> formInfos;
56 formInfos.emplace_back(formRecord);
57 formDataMgr.GetFormRecord(bundleName, formInfos);
58 formDataMgr.ExistFormRecord(formId);
59 formDataMgr.HasFormUserUids(formId);
60 FormHostRecord formHostRecord;
61 std::vector<FormHostRecord> formHostRecords;
62 formHostRecords.emplace_back(formHostRecord);
63 formDataMgr.GetFormHostRecord(formId, formHostRecords);
64 sptr<IRemoteObject> callerToken = nullptr;
65 formDataMgr.DeleteHostRecord(callerToken, formId);
66 std::vector<int64_t> removedFormIds;
67 removedFormIds.emplace_back(formId);
68 formDataMgr.CleanHostRemovedForms(removedFormIds);
69 sptr<IRemoteObject> remoteHost = nullptr;
70 formDataMgr.HandleHostDied(remoteHost);
71 return true;
72 }
73 }
74
75 /* Fuzzer entry point */
LLVMFuzzerTestOneInput(const uint8_t * data,size_t size)76 extern "C" int LLVMFuzzerTestOneInput(const uint8_t* data, size_t size)
77 {
78 /* Run your code on data */
79 if (data == nullptr) {
80 return 0;
81 }
82
83 if (size < OHOS::U32_AT_SIZE) {
84 return 0;
85 }
86
87 /* Validate the length of size */
88 if (size == 0 || size > OHOS::FOO_MAX_LEN) {
89 return 0;
90 }
91
92 char* ch = static_cast<char*>(malloc(size + 1));
93 if (ch == nullptr) {
94 return 0;
95 }
96
97 (void)memset_s(ch, size + 1, 0x00, size + 1);
98 if (memcpy_s(ch, size + 1, data, size) != EOK) {
99 free(ch);
100 ch = nullptr;
101 return 0;
102 }
103
104 OHOS::DoSomethingInterestingWithMyAPI(ch, size);
105 free(ch);
106 ch = nullptr;
107 return 0;
108 }
109
110