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/*
* 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.annotation.NonNull;
import android.annotation.Nullable;
import android.os.Binder;
import android.os.RemoteException;
import android.telephony.ims.DelegateMessageCallback;
import android.telephony.ims.DelegateRegistrationState;
import android.telephony.ims.DelegateStateCallback;
import android.telephony.ims.FeatureTagState;
import android.telephony.ims.SipDelegateConfiguration;
import android.telephony.ims.SipDelegateImsConfiguration;
import android.telephony.ims.SipDelegateManager;
import android.telephony.ims.SipMessage;
import android.telephony.ims.stub.SipDelegate;
import java.util.ArrayList;
import java.util.Set;
import java.util.concurrent.Executor;
/**
* Implementation of callbacks by wrapping the internal AIDL from telephony. Also implements
* ISipDelegate internally when {@link DelegateStateCallback#onCreated(SipDelegate, Set)} is called
* in order to trampoline events back to telephony.
* @hide
*/
public class SipDelegateAidlWrapper implements DelegateStateCallback, DelegateMessageCallback {
private static final String LOG_TAG = "SipDelegateAW";
private final ISipDelegate.Stub mDelegateBinder = new ISipDelegate.Stub() {
@Override
public void sendMessage(SipMessage sipMessage, long configVersion) {
SipDelegate d = mDelegate;
final long token = Binder.clearCallingIdentity();
try {
mExecutor.execute(() -> d.sendMessage(sipMessage, configVersion));
} finally {
Binder.restoreCallingIdentity(token);
}
}
@Override
public void notifyMessageReceived(String viaTransactionId) {
SipDelegate d = mDelegate;
final long token = Binder.clearCallingIdentity();
try {
mExecutor.execute(() -> d.notifyMessageReceived(viaTransactionId));
} finally {
Binder.restoreCallingIdentity(token);
}
}
@Override
public void notifyMessageReceiveError(String viaTransactionId, int reason) {
SipDelegate d = mDelegate;
final long token = Binder.clearCallingIdentity();
try {
mExecutor.execute(() -> d.notifyMessageReceiveError(viaTransactionId, reason));
} finally {
Binder.restoreCallingIdentity(token);
}
}
@Override
public void cleanupSession(String callId) {
SipDelegate d = mDelegate;
final long token = Binder.clearCallingIdentity();
try {
mExecutor.execute(() -> d.cleanupSession(callId));
} finally {
Binder.restoreCallingIdentity(token);
}
}
};
private final ISipDelegateMessageCallback mMessageBinder;
private final ISipDelegateStateCallback mStateBinder;
private final Executor mExecutor;
private volatile SipDelegate mDelegate;
public SipDelegateAidlWrapper(Executor executor, ISipDelegateStateCallback stateBinder,
ISipDelegateMessageCallback messageBinder) {
mExecutor = executor;
mStateBinder = stateBinder;
mMessageBinder = messageBinder;
}
@Override
public void onMessageReceived(SipMessage message) {
try {
mMessageBinder.onMessageReceived(message);
} catch (RemoteException e) {
// BinderDied will be called on SipTransport instance to trigger destruction. Notify
// failure message failure locally for now.
SipDelegate d = mDelegate;
if (d != null) {
notifyLocalMessageFailedToBeReceived(message,
SipDelegateManager.MESSAGE_FAILURE_REASON_DELEGATE_DEAD);
}
}
}
@Override
public void onMessageSent(String viaTransactionId) {
try {
mMessageBinder.onMessageSent(viaTransactionId);
} catch (RemoteException e) {
// BinderDied will trigger destroySipDelegate, so just ignore this locally.
}
}
@Override
public void onMessageSendFailure(String viaTransactionId, int reason) {
try {
mMessageBinder.onMessageSendFailure(viaTransactionId, reason);
} catch (RemoteException e) {
// BinderDied will trigger destroySipDelegate, so just ignore this locally.
}
}
@Override
public void onCreated(@NonNull SipDelegate delegate,
@Nullable Set<FeatureTagState> deniedTags) {
mDelegate = delegate;
try {
mStateBinder.onCreated(mDelegateBinder, new ArrayList<>(deniedTags));
} catch (RemoteException e) {
// BinderDied will trigger destroySipDelegate, so just ignore this locally.
}
}
@Override
public void onFeatureTagRegistrationChanged(DelegateRegistrationState registrationState) {
try {
mStateBinder.onFeatureTagRegistrationChanged(registrationState);
} catch (RemoteException e) {
// BinderDied will trigger destroySipDelegate, so just ignore this locally.
}
}
@Override
public void onImsConfigurationChanged(@NonNull SipDelegateImsConfiguration config) {
try {
mStateBinder.onImsConfigurationChanged(config);
} catch (RemoteException e) {
// BinderDied will trigger destroySipDelegate, so just ignore this locally.
}
}
@Override
public void onConfigurationChanged(@NonNull SipDelegateConfiguration config) {
try {
mStateBinder.onConfigurationChanged(config);
} catch (RemoteException e) {
// BinderDied will trigger destroySipDelegate, so just ignore this locally.
}
}
@Override
public void onDestroyed(int reasonCode) {
mDelegate = null;
try {
mStateBinder.onDestroyed(reasonCode);
} catch (RemoteException e) {
// Do not worry about this if the remote side is already dead.
}
}
public SipDelegate getDelegate() {
return mDelegate;
}
public ISipDelegate getDelegateBinder() {
return mDelegateBinder;
}
private void notifyLocalMessageFailedToBeReceived(SipMessage m, int reason) {
String transactionId = m.getViaBranchParameter();
SipDelegate d = mDelegate;
if (d != null) {
mExecutor.execute(() -> d.notifyMessageReceiveError(transactionId, reason));
}
}
}
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