1 /*
2 * Copyright (C) 2021 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 "telephony_observer_client.h"
17
18 #include "if_system_ability_manager.h"
19 #include "iservice_registry.h"
20 #include "system_ability_definition.h"
21
22 #include "telephony_log_wrapper.h"
23 #include "state_registry_errors.h"
24
25 namespace OHOS {
26 namespace Telephony {
27 TelephonyObserverClient::TelephonyObserverClient() = default;
28 TelephonyObserverClient::~TelephonyObserverClient() = default;
29
GetProxy()30 sptr<ITelephonyStateNotify> TelephonyObserverClient::GetProxy()
31 {
32 std::lock_guard<std::mutex> lock(mutexProxy_);
33 if (proxy_ != nullptr) {
34 return proxy_;
35 }
36
37 sptr<ISystemAbilityManager> sam = SystemAbilityManagerClient::GetInstance().GetSystemAbilityManager();
38 if (sam == nullptr) {
39 TELEPHONY_LOGE("Failed to get system ability manager");
40 return nullptr;
41 }
42 sptr<IRemoteObject> obj = sam->CheckSystemAbility(TELEPHONY_STATE_REGISTRY_SYS_ABILITY_ID);
43 if (obj == nullptr) {
44 TELEPHONY_LOGE("Failed to get state registry service");
45 return nullptr;
46 }
47 std::unique_ptr<StateRegistryDeathRecipient> recipient = std::make_unique<StateRegistryDeathRecipient>(*this);
48 if (recipient == nullptr) {
49 TELEPHONY_LOGE("recipient is null");
50 return nullptr;
51 }
52 sptr<IRemoteObject::DeathRecipient> dr(recipient.release());
53 if ((obj->IsProxyObject()) && (!obj->AddDeathRecipient(dr))) {
54 TELEPHONY_LOGE("Failed to add death recipient");
55 return nullptr;
56 }
57 proxy_ = iface_cast<ITelephonyStateNotify>(obj);
58 deathRecipient_ = dr;
59 TELEPHONY_LOGI("Succeed to connect state registry service %{public}d", proxy_ == nullptr);
60 return proxy_;
61 }
62
OnRemoteDied(const wptr<IRemoteObject> & remote)63 void TelephonyObserverClient::OnRemoteDied(const wptr<IRemoteObject> &remote)
64 {
65 if (remote == nullptr) {
66 TELEPHONY_LOGE("OnRemoteDied failed, remote is nullptr");
67 return;
68 }
69 std::lock_guard<std::mutex> lock(mutexProxy_);
70 if (proxy_ == nullptr) {
71 TELEPHONY_LOGE("OnRemoteDied proxy_ is nullptr");
72 return;
73 }
74 auto serviceRemote = proxy_->AsObject();
75 if ((serviceRemote != nullptr) && (serviceRemote == remote.promote())) {
76 serviceRemote->RemoveDeathRecipient(deathRecipient_);
77 proxy_ = nullptr;
78 TELEPHONY_LOGE("on remote died");
79 }
80 }
81
AddStateObserver(const sptr<TelephonyObserverBroker> & telephonyObserver,int32_t slotId,uint32_t mask,bool isUpdate)82 int32_t TelephonyObserverClient::AddStateObserver(const sptr<TelephonyObserverBroker> &telephonyObserver,
83 int32_t slotId, uint32_t mask, bool isUpdate)
84 {
85 auto proxy = GetProxy();
86 if (proxy == nullptr) {
87 TELEPHONY_LOGE("proxy is null!");
88 return TELEPHONY_ERR_IPC_CONNECT_STUB_FAIL;
89 }
90 return proxy->RegisterStateChange(telephonyObserver, slotId, mask, isUpdate);
91 }
92
RemoveStateObserver(int32_t slotId,uint32_t mask)93 int32_t TelephonyObserverClient::RemoveStateObserver(int32_t slotId, uint32_t mask)
94 {
95 auto proxy = GetProxy();
96 if (proxy == nullptr) {
97 TELEPHONY_LOGE("proxy is null!");
98 return TELEPHONY_ERR_IPC_CONNECT_STUB_FAIL;
99 }
100 return proxy->UnregisterStateChange(slotId, mask);
101 }
102 }
103 }
104
105