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 AppMgrDeathRecipient());
29
OnRemoteDied(const wptr<IRemoteObject> & remote)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 if (appStateAwareObserver_ == nullptr) {
60 ErrorLog("SubscribeAppState: appStateAwareObserver_ is nullptr");
61 return false;
62 }
63 auto err = appMgrProxy_->RegisterApplicationStateObserver(appStateAwareObserver_);
64 if (err != 0) {
65 ErrorLog("SubscribeAppState error, code = %{public}d", err);
66 appStateAwareObserver_ = nullptr;
67 return false;
68 }
69 DebugLog("SubscribeAppState success");
70 return true;
71 }
72
UnSubscribeAppState()73 bool AppStateObserver::UnSubscribeAppState()
74 {
75 InfoLog("UnSubscribeAppState start");
76 std::lock_guard<std::mutex> lock(mutex_);
77 if (!appStateAwareObserver_) {
78 ErrorLog("UnSubscribeAppState: appStateAwareObserver_ is nullptr");
79 return false;
80 }
81 if (appMgrProxy_) {
82 appMgrProxy_->UnregisterApplicationStateObserver(appStateAwareObserver_);
83 appMgrProxy_ = nullptr;
84 appStateAwareObserver_ = nullptr;
85 }
86 InfoLog("UnSubscribeAppState end");
87 return true;
88 }
89
Connect()90 bool AppStateObserver::Connect()
91 {
92 if (appMgrProxy_ != nullptr) {
93 InfoLog("already connect");
94 return true;
95 }
96
97 sptr<ISystemAbilityManager> systemAbilityManager =
98 SystemAbilityManagerClient::GetInstance().GetSystemAbilityManager();
99 if (systemAbilityManager == nullptr) {
100 ErrorLog("get SystemAbilityManager failed");
101 return false;
102 }
103
104 sptr<IRemoteObject> remoteObject = systemAbilityManager->GetSystemAbility(APP_MGR_SERVICE_ID);
105 if (remoteObject == nullptr) {
106 ErrorLog("get App Manager Service failed");
107 return false;
108 }
109
110 appMgrProxy_ = iface_cast<AppExecFwk::IAppMgr>(remoteObject);
111 if (!appMgrProxy_ || !appMgrProxy_->AsObject()) {
112 ErrorLog("get app mgr proxy failed!");
113 return false;
114 }
115 appMgrProxy_->AsObject()->AddDeathRecipient(appMgrDeathRecipient_);
116 return true;
117 }
118
RegisterAppStateChangeCallback(INfcAppStateObserver * nfcAppStateChangeCallback)119 bool AppStateObserver::RegisterAppStateChangeCallback(INfcAppStateObserver *nfcAppStateChangeCallback)
120 {
121 if (!appStateAwareObserver_) {
122 ErrorLog("UnSubscribeAppState: appStateAwareObserver_ is nullptr");
123 return false;
124 }
125 if (nfcAppStateChangeCallback == nullptr) {
126 ErrorLog("nfcAppStateChangeCallback_ is nullptr");
127 return false;
128 }
129 return appStateAwareObserver_->RegisterAppStateChangeCallback(nfcAppStateChangeCallback);
130 }
131
OnAbilityStateChanged(const AppExecFwk::AbilityStateData & abilityStateData)132 void AppStateObserver::AppStateAwareObserver::OnAbilityStateChanged(
133 const AppExecFwk::AbilityStateData &abilityStateData)
134 {
135 if (nfcAppStateChangeCallback_ == nullptr) {
136 ErrorLog("nfcAppStateChangeCallback_ is nullptr");
137 return;
138 }
139 nfcAppStateChangeCallback_->HandleAppStateChanged(abilityStateData.bundleName, abilityStateData.abilityName,
140 abilityStateData.abilityState);
141 }
142
OnForegroundApplicationChanged(const AppExecFwk::AppStateData & appStateData)143 void AppStateObserver::AppStateAwareObserver::OnForegroundApplicationChanged(
144 const AppExecFwk::AppStateData &appStateData)
145 {
146 }
147
RegisterAppStateChangeCallback(INfcAppStateObserver * nfcAppStateChangeCallback)148 bool AppStateObserver::AppStateAwareObserver::RegisterAppStateChangeCallback(
149 INfcAppStateObserver *nfcAppStateChangeCallback)
150 {
151 if (nfcAppStateChangeCallback == nullptr) {
152 ErrorLog("nfcAppStateChangeCallback_ is nullptr");
153 return false;
154 }
155 nfcAppStateChangeCallback_ = nfcAppStateChangeCallback;
156 return true;
157 }
158
OnProcessDied(const AppExecFwk::ProcessData & processData)159 void AppStateObserver::AppStateAwareObserver::OnProcessDied(const AppExecFwk::ProcessData &processData)
160 {
161 }
162
IsForegroundApp(const std::string & bundleName)163 bool AppStateObserver::IsForegroundApp(const std::string &bundleName)
164 {
165 std::lock_guard<std::mutex> lock(mutex_);
166 if (!Connect()) {
167 ErrorLog("IsForegroundApp connect failed");
168 return false;
169 }
170 std::vector<AppExecFwk::AppStateData> appList;
171 appMgrProxy_->GetForegroundApplications(appList);
172 for (AppExecFwk::AppStateData appData : appList) {
173 if (bundleName.compare(appData.bundleName) == 0) {
174 InfoLog("IsForegroundApp: %{public}s is foreground", bundleName.c_str());
175 return true;
176 }
177 }
178 ErrorLog("IsForegroundApp: %{public}s is not foreground", bundleName.c_str());
179 return false;
180 }
181 } // namespace NFC
182 } // namespace OHOS