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 "connectionobserverclientimpl_fuzzer.h"
17
18 #include <cstddef>
19 #include <cstdint>
20
21 #define private public
22 #define protected public
23 #include "connection_observer_client_impl.h"
24 #include "service_proxy_adapter.h"
25 #undef protected
26 #undef private
27
28 #include "ability_record.h"
29 #include "continuous_task_callback_info.h"
30 #include "connection_observer.h"
31
32 using namespace OHOS::AAFwk;
33 using namespace OHOS::AppExecFwk;
34 using namespace OHOS::AbilityRuntime;
35
36 namespace OHOS {
37 namespace {
38 constexpr size_t FOO_MAX_LEN = 1024;
39 constexpr size_t U32_AT_SIZE = 4;
40
41 class MyConnectionObserver : public ConnectionObserver {
42 public:
43 MyConnectionObserver() = default;
44 virtual ~MyConnectionObserver() = default;
OnExtensionConnected(const ConnectionData & data)45 void OnExtensionConnected(const ConnectionData &data) override
46 {}
OnExtensionDisconnected(const ConnectionData & data)47 void OnExtensionDisconnected(const ConnectionData &data) override
48 {}
OnDlpAbilityOpened(const DlpStateData & data)49 void OnDlpAbilityOpened(const DlpStateData &data) override
50 {}
OnDlpAbilityClosed(const DlpStateData & data)51 void OnDlpAbilityClosed(const DlpStateData &data) override
52 {}
OnServiceDied()53 void OnServiceDied() override
54 {}
55 };
56 }
57
GetU32Data(const char * ptr)58 uint32_t GetU32Data(const char* ptr)
59 {
60 // convert fuzz input data to an integer
61 return (ptr[0] << 24) | (ptr[1] << 16) | (ptr[2] << 8) | ptr[3];
62 }
63
DoSomethingInterestingWithMyAPI(const char * data,size_t size)64 bool DoSomethingInterestingWithMyAPI(const char* data, size_t size)
65 {
66 std::shared_ptr<ConnectionObserver> observer = std::make_shared<MyConnectionObserver>();
67 // fuzz for connectionObserverClientImpl
68 auto connectionObserverClientImpl = std::make_shared<ConnectionObserverClientImpl>();
69 connectionObserverClientImpl->UnregisterObserver(observer);
70 AbilityRuntime::ConnectionData connectionData;
71 connectionObserverClientImpl->HandleExtensionConnected(connectionData);
72 connectionObserverClientImpl->HandleExtensionDisconnected(connectionData);
73 AbilityRuntime::DlpStateData dlpStateData;
74 connectionObserverClientImpl->HandleDlpAbilityOpened(dlpStateData);
75 connectionObserverClientImpl->HandleDlpAbilityClosed(dlpStateData);
76 sptr<IRemoteObject> remoteObj;
77 auto serviceProxyAdapter = std::make_shared<ServiceProxyAdapter>(remoteObj);
78 connectionObserverClientImpl->UnregisterFromServiceLocked(serviceProxyAdapter);
79 connectionObserverClientImpl->RemoveObserversLocked(observer);
80 wptr<IRemoteObject> remote;
81 connectionObserverClientImpl->HandleRemoteDied(remote);
82 connectionObserverClientImpl->ResetProxy(remote);
83 connectionObserverClientImpl->ResetStatus();
84 connectionObserverClientImpl->NotifyServiceDiedToObservers();
85 connectionObserverClientImpl->GetObservers();
86 return true;
87 }
88 }
89
90 /* Fuzzer entry point */
LLVMFuzzerTestOneInput(const uint8_t * data,size_t size)91 extern "C" int LLVMFuzzerTestOneInput(const uint8_t* data, size_t size)
92 {
93 /* Run your code on data */
94 if (data == nullptr) {
95 return 0;
96 }
97
98 /* Validate the length of size */
99 if (size < OHOS::U32_AT_SIZE || size > OHOS::FOO_MAX_LEN) {
100 return 0;
101 }
102
103 char* ch = (char *)malloc(size + 1);
104 if (ch == nullptr) {
105 std::cout << "malloc failed." << std::endl;
106 return 0;
107 }
108
109 (void)memset_s(ch, size + 1, 0x00, size + 1);
110 if (memcpy_s(ch, size, data, size) != EOK) {
111 std::cout << "copy failed." << std::endl;
112 free(ch);
113 ch = nullptr;
114 return 0;
115 }
116
117 OHOS::DoSomethingInterestingWithMyAPI(ch, size);
118 free(ch);
119 ch = nullptr;
120 return 0;
121 }
122
123