1 /*
2 * Copyright (C) 2023 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 "app_state_observer.h"
17
18 #include "app_mgr_constants.h"
19 #include "iservice_registry.h"
20 #include "ability_manager_client.h"
21 #include "system_ability_definition.h"
22 #include "loghelper.h"
23
24 namespace OHOS {
25 namespace NFC {
26 std::mutex mutex_ {};
27 sptr<AppExecFwk::IAppMgr> appMgrProxy_ {nullptr};
28 sptr<AppMgrDeathRecipient> appMgrDeathRecipient_(new (std::nothrow) AppMgrDeathRecipient());
29
30 void AppMgrDeathRecipient::OnRemoteDied([[maybe_unused]] const wptr<IRemoteObject> &remote)
31 {
32 ErrorLog("On AppMgr died");
33 std::lock_guard<std::mutex> guard(mutex_);
34 appMgrProxy_ = nullptr;
35 };
36
AppStateObserver(INfcAppStateObserver * nfcAppStateChangeCallback)37 AppStateObserver::AppStateObserver(INfcAppStateObserver *nfcAppStateChangeCallback)
38 {
39 SubscribeAppState();
40 RegisterAppStateChangeCallback(nfcAppStateChangeCallback);
41 }
42
~AppStateObserver()43 AppStateObserver::~AppStateObserver()
44 {
45 UnSubscribeAppState();
46 }
47
SubscribeAppState()48 bool AppStateObserver::SubscribeAppState()
49 {
50 std::lock_guard<std::mutex> lock(mutex_);
51 if (appStateAwareObserver_) {
52 ErrorLog("SubscribeAppState: appStateAwareObserver_ has register");
53 return false;
54 }
55 if (!Connect()) {
56 return false;
57 }
58 appStateAwareObserver_ = new (std::nothrow)AppStateAwareObserver();
59 auto err = appMgrProxy_->RegisterApplicationStateObserver(appStateAwareObserver_);
60 if (err != 0) {
61 ErrorLog("SubscribeAppState error, code = %{public}d", err);
62 appStateAwareObserver_ = nullptr;
63 return false;
64 }
65 DebugLog("SubscribeAppState success");
66 return true;
67 }
68
UnSubscribeAppState()69 bool AppStateObserver::UnSubscribeAppState()
70 {
71 InfoLog("UnSubscribeAppState start");
72 std::lock_guard<std::mutex> lock(mutex_);
73 if (!appStateAwareObserver_) {
74 ErrorLog("UnSubscribeAppState: appStateAwareObserver_ is nullptr");
75 return false;
76 }
77 if (appMgrProxy_) {
78 appMgrProxy_->UnregisterApplicationStateObserver(appStateAwareObserver_);
79 appMgrProxy_ = nullptr;
80 appStateAwareObserver_ = nullptr;
81 }
82 InfoLog("UnSubscribeAppState end");
83 return true;
84 }
85
Connect()86 bool AppStateObserver::Connect()
87 {
88 if (appMgrProxy_ != nullptr) {
89 InfoLog("already connect");
90 return true;
91 }
92
93 sptr<ISystemAbilityManager> systemAbilityManager =
94 SystemAbilityManagerClient::GetInstance().GetSystemAbilityManager();
95 if (systemAbilityManager == nullptr) {
96 ErrorLog("get SystemAbilityManager failed");
97 return false;
98 }
99
100 sptr<IRemoteObject> remoteObject = systemAbilityManager->GetSystemAbility(APP_MGR_SERVICE_ID);
101 if (remoteObject == nullptr) {
102 ErrorLog("get App Manager Service failed");
103 return false;
104 }
105
106 appMgrProxy_ = iface_cast<AppExecFwk::IAppMgr>(remoteObject);
107 if (!appMgrProxy_ || !appMgrProxy_->AsObject()) {
108 ErrorLog("get app mgr proxy failed!");
109 return false;
110 }
111 appMgrProxy_->AsObject()->AddDeathRecipient(appMgrDeathRecipient_);
112 return true;
113 }
114
RegisterAppStateChangeCallback(INfcAppStateObserver * nfcAppStateChangeCallback)115 bool AppStateObserver::RegisterAppStateChangeCallback(INfcAppStateObserver *nfcAppStateChangeCallback)
116 {
117 if (!appStateAwareObserver_) {
118 ErrorLog("UnSubscribeAppState: appStateAwareObserver_ is nullptr");
119 return false;
120 }
121 if (nfcAppStateChangeCallback == nullptr) {
122 ErrorLog("nfcAppStateChangeCallback_ is nullptr");
123 return false;
124 }
125 return appStateAwareObserver_->RegisterAppStateChangeCallback(nfcAppStateChangeCallback);
126 }
127
OnAbilityStateChanged(const AppExecFwk::AbilityStateData & abilityStateData)128 void AppStateObserver::AppStateAwareObserver::OnAbilityStateChanged(
129 const AppExecFwk::AbilityStateData &abilityStateData)
130 {
131 if (nfcAppStateChangeCallback_ == nullptr) {
132 ErrorLog("nfcAppStateChangeCallback_ is nullptr");
133 return;
134 }
135 nfcAppStateChangeCallback_->HandleAppStateChanged(abilityStateData.bundleName, abilityStateData.abilityName,
136 abilityStateData.abilityState);
137 }
138
OnForegroundApplicationChanged(const AppExecFwk::AppStateData & appStateData)139 void AppStateObserver::AppStateAwareObserver::OnForegroundApplicationChanged(
140 const AppExecFwk::AppStateData &appStateData)
141 {
142 }
143
RegisterAppStateChangeCallback(INfcAppStateObserver * nfcAppStateChangeCallback)144 bool AppStateObserver::AppStateAwareObserver::RegisterAppStateChangeCallback(
145 INfcAppStateObserver *nfcAppStateChangeCallback)
146 {
147 if (nfcAppStateChangeCallback == nullptr) {
148 ErrorLog("nfcAppStateChangeCallback_ is nullptr");
149 return false;
150 }
151 nfcAppStateChangeCallback_ = nfcAppStateChangeCallback;
152 return true;
153 }
154
OnProcessDied(const AppExecFwk::ProcessData & processData)155 void AppStateObserver::AppStateAwareObserver::OnProcessDied(const AppExecFwk::ProcessData &processData)
156 {
157 }
158
IsForegroundApp(const std::string & bundleName)159 bool AppStateObserver::IsForegroundApp(const std::string &bundleName)
160 {
161 if (!Connect()) {
162 ErrorLog("IsForegroundApp connect failed");
163 return false;
164 }
165 std::vector<AppExecFwk::AppStateData> appList;
166 appMgrProxy_->GetForegroundApplications(appList);
167 for (AppExecFwk::AppStateData appData : appList) {
168 if (bundleName.compare(appData.bundleName) == 0) {
169 InfoLog("IsForegroundApp: %{public}s is foreground", bundleName.c_str());
170 return true;
171 }
172 }
173 ErrorLog("IsForegroundApp: %{public}s is not foreground", bundleName.c_str());
174 return false;
175 }
176 } // namespace NFC
177 } // namespace OHOS