| /* |
| * Copyright (C) 2020 The Android Open Source Project |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| package android.telephony.ims.aidl; |
| |
| import android.os.Binder; |
| import android.os.IBinder; |
| import android.os.RemoteException; |
| import android.telephony.ims.DelegateRegistrationState; |
| import android.telephony.ims.FeatureTagState; |
| import android.telephony.ims.SipDelegateConnection; |
| import android.telephony.ims.SipDelegateImsConfiguration; |
| import android.telephony.ims.SipDelegateManager; |
| import android.telephony.ims.SipMessage; |
| import android.telephony.ims.stub.DelegateConnectionMessageCallback; |
| import android.telephony.ims.stub.DelegateConnectionStateCallback; |
| import android.telephony.ims.stub.SipDelegate; |
| import android.util.ArraySet; |
| import android.util.Log; |
| |
| import java.util.List; |
| import java.util.NoSuchElementException; |
| import java.util.concurrent.Executor; |
| import java.util.concurrent.atomic.AtomicReference; |
| |
| /** |
| * Wrapper class implementing {@link SipDelegateConnection} using AIDL, which is returned to the |
| * local process. Also holds a reference to incoming connection message and state AIDL impl to |
| * trampoline events to callbacks as well as notify the local process in the event that the remote |
| * process becomes unavailable. |
| * <p> |
| * When the remote {@link SipDelegate} is created, this instance tracks the |
| * {@link ISipDelegate} associated with it and implements the |
| * {@link SipDelegateConnection} sent back to the local callback. |
| * @hide |
| */ |
| public class SipDelegateConnectionAidlWrapper implements SipDelegateConnection, |
| IBinder.DeathRecipient { |
| private static final String LOG_TAG = "SipDelegateCAW"; |
| |
| private final ISipDelegateConnectionStateCallback.Stub mStateBinder = |
| new ISipDelegateConnectionStateCallback.Stub() { |
| @Override |
| public void onCreated(ISipDelegate c) { |
| associateSipDelegate(c); |
| final long token = Binder.clearCallingIdentity(); |
| try { |
| mExecutor.execute(() -> |
| mStateCallback.onCreated(SipDelegateConnectionAidlWrapper.this)); |
| } finally { |
| Binder.restoreCallingIdentity(token); |
| } |
| } |
| |
| @Override |
| public void onFeatureTagStatusChanged(DelegateRegistrationState registrationState, |
| List<FeatureTagState> deniedFeatureTags) { |
| final long token = Binder.clearCallingIdentity(); |
| try { |
| mExecutor.execute(() -> |
| mStateCallback.onFeatureTagStatusChanged(registrationState, |
| new ArraySet<>(deniedFeatureTags))); |
| } finally { |
| Binder.restoreCallingIdentity(token); |
| } |
| } |
| |
| @Override |
| public void onImsConfigurationChanged(SipDelegateImsConfiguration registeredSipConfig) { |
| final long token = Binder.clearCallingIdentity(); |
| try { |
| mExecutor.execute(() -> |
| mStateCallback.onImsConfigurationChanged(registeredSipConfig)); |
| } finally { |
| Binder.restoreCallingIdentity(token); |
| } |
| } |
| |
| @Override |
| public void onDestroyed(int reason) { |
| invalidateSipDelegateBinder(); |
| final long token = Binder.clearCallingIdentity(); |
| try { |
| mExecutor.execute(() -> |
| mStateCallback.onDestroyed(reason)); |
| } finally { |
| Binder.restoreCallingIdentity(token); |
| } |
| } |
| }; |
| |
| private final ISipDelegateMessageCallback.Stub mMessageBinder = |
| new ISipDelegateMessageCallback.Stub() { |
| @Override |
| public void onMessageReceived(SipMessage message) { |
| final long token = Binder.clearCallingIdentity(); |
| try { |
| mExecutor.execute(() -> |
| mMessageCallback.onMessageReceived(message)); |
| } finally { |
| Binder.restoreCallingIdentity(token); |
| } |
| } |
| |
| @Override |
| public void onMessageSent(String viaTransactionId) { |
| final long token = Binder.clearCallingIdentity(); |
| try { |
| mExecutor.execute(() -> |
| mMessageCallback.onMessageSent(viaTransactionId)); |
| } finally { |
| Binder.restoreCallingIdentity(token); |
| } |
| } |
| |
| @Override |
| public void onMessageSendFailure(String viaTransactionId, int reason) { |
| final long token = Binder.clearCallingIdentity(); |
| try { |
| mExecutor.execute(() -> |
| mMessageCallback.onMessageSendFailure(viaTransactionId, reason)); |
| } finally { |
| Binder.restoreCallingIdentity(token); |
| } |
| } |
| }; |
| |
| |
| private final Executor mExecutor; |
| private final DelegateConnectionStateCallback mStateCallback; |
| private final DelegateConnectionMessageCallback mMessageCallback; |
| private final AtomicReference<ISipDelegate> mDelegateBinder = |
| new AtomicReference<>(); |
| |
| /** |
| * Wrap the local state and message callbacks, calling the implementation of these interfaces |
| * when the remote process calls these methods. |
| */ |
| public SipDelegateConnectionAidlWrapper(Executor executor, |
| DelegateConnectionStateCallback stateCallback, |
| DelegateConnectionMessageCallback messageCallback) { |
| mExecutor = executor; |
| mStateCallback = stateCallback; |
| mMessageCallback = messageCallback; |
| } |
| |
| @Override |
| public void sendMessage(SipMessage sipMessage, long configVersion) { |
| try { |
| ISipDelegate conn = getSipDelegateBinder(); |
| if (conn == null) { |
| notifyLocalMessageFailedToSend(sipMessage, |
| SipDelegateManager.MESSAGE_FAILURE_REASON_DELEGATE_CLOSED); |
| return; |
| } |
| conn.sendMessage(sipMessage, configVersion); |
| } catch (RemoteException e) { |
| notifyLocalMessageFailedToSend(sipMessage, |
| SipDelegateManager.MESSAGE_FAILURE_REASON_DELEGATE_DEAD); |
| } |
| } |
| |
| @Override |
| public void notifyMessageReceived(String viaTransactionId) { |
| try { |
| ISipDelegate conn = getSipDelegateBinder(); |
| if (conn == null) { |
| return; |
| } |
| conn.notifyMessageReceived(viaTransactionId); |
| } catch (RemoteException e) { |
| // Nothing to do here, app will eventually get remote death callback. |
| } |
| } |
| |
| @Override |
| public void notifyMessageReceiveError(String viaTransactionId, int reason) { |
| try { |
| ISipDelegate conn = getSipDelegateBinder(); |
| if (conn == null) { |
| return; |
| } |
| conn.notifyMessageReceiveError(viaTransactionId, reason); |
| } catch (RemoteException e) { |
| // Nothing to do here, app will eventually get remote death callback. |
| } |
| } |
| |
| @Override |
| public void closeDialog(String callId) { |
| try { |
| ISipDelegate conn = getSipDelegateBinder(); |
| if (conn == null) { |
| return; |
| } |
| conn.closeDialog(callId); |
| } catch (RemoteException e) { |
| // Nothing to do here, app will eventually get remote death callback. |
| } |
| } |
| |
| // Also called upon IImsRcsController death (telephony process dies). |
| @Override |
| public void binderDied() { |
| invalidateSipDelegateBinder(); |
| mExecutor.execute(() -> mStateCallback.onDestroyed( |
| SipDelegateManager.SIP_DELEGATE_DESTROY_REASON_SERVICE_DEAD)); |
| } |
| |
| /** |
| * @return Implementation of state binder. |
| */ |
| public ISipDelegateConnectionStateCallback getStateCallbackBinder() { |
| return mStateBinder; |
| } |
| |
| /** |
| * @return Implementation of message binder. |
| */ |
| public ISipDelegateMessageCallback getMessageCallbackBinder() { |
| return mMessageBinder; |
| } |
| |
| /** |
| * @return The ISipDelegateConnection associated with this wrapper. |
| */ |
| public ISipDelegate getSipDelegateBinder() { |
| return mDelegateBinder.get(); |
| } |
| |
| private void associateSipDelegate(ISipDelegate c) { |
| if (c != null) { |
| try { |
| c.asBinder().linkToDeath(this, 0 /*flags*/); |
| } catch (RemoteException e) { |
| // already dead. |
| c = null; |
| } |
| } |
| mDelegateBinder.set(c); |
| } |
| |
| private void invalidateSipDelegateBinder() { |
| ISipDelegate oldVal = mDelegateBinder.getAndUpdate((unused) -> null); |
| if (oldVal != null) { |
| try { |
| oldVal.asBinder().unlinkToDeath(this, 0 /*flags*/); |
| } catch (NoSuchElementException e) { |
| Log.i(LOG_TAG, "invalidateSipDelegateBinder: " + e); |
| } |
| } |
| } |
| |
| private void notifyLocalMessageFailedToSend(SipMessage m, int reason) { |
| //TODO: parse transaction ID or throw IllegalArgumentException if the SipMessage |
| // transaction ID can not be parsed. |
| mExecutor.execute(() -> |
| mMessageCallback.onMessageSendFailure(null, reason)); |
| } |
| } |