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 "formsyseventreceiver_fuzzer.h"
17
18 #include <cstddef>
19 #include <cstdint>
20
21 #define private public
22 #define protected public
23 #include "common/event/system_event/form_sys_event_receiver.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 EventFwk::CommonEventSubscribeInfo subscriberInfo;
41 FormSysEventReceiver formSysEventReceiver(subscriberInfo);
42 EventFwk::CommonEventData eventData;
43 formSysEventReceiver.OnReceiveEvent(eventData);
44 int64_t formId = static_cast<int64_t>(GetU32Data(data));
45 FormRecord formRecord;
46 FormInfo formInfo;
47 std::vector<FormInfo> targetForms;
48 targetForms.emplace_back(formInfo);
49 std::string bundleName(data, size);
50 int userId = static_cast<int>(GetU32Data(data));
51 FormEventUtil::HandleProviderUpdated(bundleName, userId);
52 int32_t userIds = static_cast<int32_t>(GetU32Data(data));
53 FormEventUtil::HandleProviderRemoved(bundleName, userIds);
54 BundlePackInfo bundlePackInfo;
55 BundleInfo bundleInfo;
56 FormEventUtil::ProviderFormUpdated(formId, formRecord, bundlePackInfo, bundleInfo);
57 FormEventUtil::HandleBundleFormInfoChanged(bundleName, userIds);
58 FormEventUtil::HandleUpdateFormCloud(bundleName);
59 FormEventUtil::HandleBundleFormInfoRemoved(bundleName, userIds);
60 FormEventUtil::HandleBundleDataCleared(bundleName, userIds);
61 int uid = static_cast<int>(GetU32Data(data));
62 FormEventUtil::HandleFormHostDataCleared(uid);
63 AAFwk::Want want;
64 formSysEventReceiver.HandleAbilityUpdate(want, bundleName);
65 formSysEventReceiver.HandlePackageDataCleared(bundleName, userId);
66 formSysEventReceiver.HandleUserUnlocked(uid);
67 formSysEventReceiver.HandleUserSwitched(eventData);
68 bool flag = *data % ENABLE;
69 std::map<int64_t, bool> removedFormsMap;
70 removedFormsMap.emplace(formId, flag);
71 FormEventUtil::ClearFormDBRecordData(uid, removedFormsMap);
72 FormEventUtil::ClearTempFormRecordData(uid, removedFormsMap);
73 std::string abilityName;
74 FormIdKey formIdKey(bundleName, abilityName);
75 std::set<int64_t> formNums;
76 formNums.insert(formId);
77 std::map<FormIdKey, std::set<int64_t>> noHostFormDbMap;
78 noHostFormDbMap.emplace(formIdKey, formNums);
79 FormEventUtil::BatchDeleteNoHostDBForms(uid, noHostFormDbMap, removedFormsMap);
80 FormEventUtil::BatchDeleteNoHostTempForms(uid, noHostFormDbMap, removedFormsMap);
81 FormEventUtil::ReCreateForm(formId);
82 FormTimerCfg cfg;
83 FormEventUtil::HandleTimerUpdate(formId, formRecord, cfg);
84 formSysEventReceiver.HandleUserIdRemoved(userIds);
85 formSysEventReceiver.HandleBundleScanFinished();
86 eventData.SetCode(userIds);
87 return FormEventUtil::ProviderFormUpdated(formId, formRecord, targetForms, bundleInfo);
88 }
89 }
90
91 /* Fuzzer entry point */
LLVMFuzzerTestOneInput(const uint8_t * data,size_t size)92 extern "C" int LLVMFuzzerTestOneInput(const uint8_t* data, size_t size)
93 {
94 /* Run your code on data */
95 if (data == nullptr) {
96 return 0;
97 }
98
99 if (size < OHOS::U32_AT_SIZE) {
100 return 0;
101 }
102
103 char* ch = static_cast<char*>(malloc(size + 1));
104 if (ch == nullptr) {
105 return 0;
106 }
107
108 (void)memset_s(ch, size + 1, 0x00, size + 1);
109 if (memcpy_s(ch, size + 1, data, size) != EOK) {
110 free(ch);
111 ch = nullptr;
112 return 0;
113 }
114
115 OHOS::DoSomethingInterestingWithMyAPI(ch, size);
116 free(ch);
117 ch = nullptr;
118 return 0;
119 }
120
121