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 "formdatamgr_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;
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 FormItemInfo formInfo;
42 int callingUid = static_cast<int>(GetU32Data(data));
43 int32_t userId = static_cast<int32_t>(GetU32Data(data));
44 formDataMgr.AllotFormRecord(formInfo, callingUid, userId);
45 int64_t formId = static_cast<int64_t>(GetU32Data(data));
46 formDataMgr.DeleteFormRecord(formId);
47 sptr<IRemoteObject> callerToken = nullptr;
48 formDataMgr.AllotFormHostRecord(formInfo, callerToken, formId, callingUid);
49 FormHostRecord record;
50 formDataMgr.CreateHostRecord(formInfo, callerToken, callingUid, record);
51 formDataMgr.CreateFormRecord(formInfo, callingUid, userId);
52 FormRecord records;
53 FormJsInfo formInfos;
54 formDataMgr.CreateFormJsInfo(formId, records, formInfos);
55 formDataMgr.CheckTempEnoughForm();
56 int32_t currentUserId = static_cast<int32_t>(GetU32Data(data));
57 formDataMgr.CheckEnoughForm(callingUid, currentUserId);
58 formDataMgr.DeleteTempForm(formId);
59 formDataMgr.ExistTempForm(formId);
60 return true;
61 }
62 }
63
64 /* Fuzzer entry point */
LLVMFuzzerTestOneInput(const uint8_t * data,size_t size)65 extern "C" int LLVMFuzzerTestOneInput(const uint8_t* data, size_t size)
66 {
67 /* Run your code on data */
68 if (data == nullptr) {
69 return 0;
70 }
71
72 if (size < OHOS::U32_AT_SIZE) {
73 return 0;
74 }
75
76 /* Validate the length of size */
77 if (size == 0 || size > OHOS::FOO_MAX_LEN) {
78 return 0;
79 }
80
81 char* ch = static_cast<char*>(malloc(size + 1));
82 if (ch == nullptr) {
83 return 0;
84 }
85
86 (void)memset_s(ch, size + 1, 0x00, size + 1);
87 if (memcpy_s(ch, size + 1, data, size) != EOK) {
88 free(ch);
89 ch = nullptr;
90 return 0;
91 }
92
93 OHOS::DoSomethingInterestingWithMyAPI(ch, size);
94 free(ch);
95 ch = nullptr;
96 return 0;
97 }
98
99