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 "formdbcacheannex_fuzzer.h"
17
18 #include <cstddef>
19 #include <cstdint>
20
21 #define private public
22 #define protected public
23 #include "form_db_cache.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 FormDbCache formDbCache;
41 int64_t formId = static_cast<int64_t>(GetU32Data(data));
42 FormRecord record;
43 formDbCache.GetDBRecord(formId, record);
44 FormDBInfo records;
45 formDbCache.GetDBRecord(formId, records);
46 formDbCache.UpdateDBRecord(formId, record);
47 int uid = static_cast<int>(GetU32Data(data));
48 std::set<int64_t> formNums;
49 formNums.insert(formId);
50 std::string bundleName(data, size);
51 std::string abilityName(data, size);
52 FormIdKey formIdKey(bundleName, abilityName);
53 std::map<FormIdKey, std::set<int64_t>> noHostFormDBList;
54 noHostFormDBList.emplace(formIdKey, formNums);
55 std::map<int64_t, bool> foundFormsMap;
56 bool flag = *data % ENABLE;
57 foundFormsMap.emplace(formId, flag);
58 formDbCache.GetNoHostDBForms(uid, noHostFormDBList, foundFormsMap);
59 std::string moduleName(data, size);
60 formDbCache.GetMatchCount(bundleName, moduleName);
61 int32_t userId = static_cast<int32_t>(GetU32Data(data));
62 formDbCache.DeleteDBFormsByUserId(userId);
63 int32_t callingUid = static_cast<int32_t>(GetU32Data(data));
64 std::set<int64_t> matchedFormIds;
65 matchedFormIds.insert(formId);
66 formDbCache.GetNoHostInvalidDBForms(userId, callingUid, matchedFormIds, noHostFormDBList, foundFormsMap);
67 formDbCache.BatchDeleteNoHostDBForms(callingUid, noHostFormDBList, foundFormsMap);
68 formDbCache.DeleteInvalidDBForms(userId, callingUid, matchedFormIds, foundFormsMap);
69 return true;
70 }
71 }
72
73 /* Fuzzer entry point */
LLVMFuzzerTestOneInput(const uint8_t * data,size_t size)74 extern "C" int LLVMFuzzerTestOneInput(const uint8_t* data, size_t size)
75 {
76 /* Run your code on data */
77 if (data == nullptr) {
78 return 0;
79 }
80
81 if (size < OHOS::U32_AT_SIZE) {
82 return 0;
83 }
84
85 char* ch = static_cast<char*>(malloc(size + 1));
86 if (ch == nullptr) {
87 return 0;
88 }
89
90 (void)memset_s(ch, size + 1, 0x00, size + 1);
91 if (memcpy_s(ch, size + 1, data, size) != EOK) {
92 free(ch);
93 ch = nullptr;
94 return 0;
95 }
96
97 OHOS::DoSomethingInterestingWithMyAPI(ch, size);
98 free(ch);
99 ch = nullptr;
100 return 0;
101 }
102
103