/* * 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; import android.Manifest; import android.annotation.IntDef; import android.annotation.IntRange; import android.annotation.NonNull; import android.annotation.Nullable; import android.annotation.RequiresFeature; import android.annotation.RequiresPermission; import android.annotation.SystemApi; import android.content.Context; import android.content.pm.PackageManager; import android.os.RemoteException; import android.os.ServiceSpecificException; import android.telephony.BinderCacheManager; import android.telephony.ims.aidl.IImsRcsController; import android.telephony.ims.aidl.SipDelegateConnectionAidlWrapper; import android.telephony.ims.feature.ImsFeature; import android.telephony.ims.stub.DelegateConnectionMessageCallback; import android.telephony.ims.stub.DelegateConnectionStateCallback; import android.telephony.ims.stub.SipDelegate; import android.util.ArrayMap; import com.android.internal.annotations.VisibleForTesting; import com.android.internal.telephony.ITelephony; import java.lang.annotation.Retention; import java.lang.annotation.RetentionPolicy; import java.util.Objects; import java.util.concurrent.Executor; /** * Manages the creation and destruction of SipDelegates for the {@link ImsService} managing IMS * for the subscription ID that this SipDelegateManager has been created for. * * This allows multiple IMS applications to forward SIP messages to/from their application for the * purposes of providing a single IMS registration to the carrier's IMS network from potentially * many IMS stacks implementing a subset of the supported MMTEL/RCS features. *
* This API is only supported if the device supports the * {@link PackageManager#FEATURE_TELEPHONY_IMS_SINGLE_REGISTRATION} feature. * @hide */ @SystemApi @RequiresFeature(PackageManager.FEATURE_TELEPHONY_IMS_SINGLE_REGISTRATION) public class SipDelegateManager { /** * The SIP message has failed being sent or received for an unknown reason. *
* The caller should retry a message that failed with this response. */ public static final int MESSAGE_FAILURE_REASON_UNKNOWN = 0; /** * The remote service associated with this connection has died and the message was not * properly sent/received. *
* This is considered a permanent error and the system will automatically begin the teardown and * destruction of the SipDelegate. No further messages should be sent on this transport. */ public static final int MESSAGE_FAILURE_REASON_DELEGATE_DEAD = 1; /** * The message has not been sent/received because the delegate is in the process of closing and * has become unavailable. No further messages should be sent/received on this delegate. */ public static final int MESSAGE_FAILURE_REASON_DELEGATE_CLOSED = 2; /** * The SIP message has an invalid start line and the message can not be sent or the start line * failed validation due to the request containing a restricted SIP request method. * {@link SipDelegateConnection}s can not send SIP requests for the methods: REGISTER, PUBLISH, * or OPTIONS. */ public static final int MESSAGE_FAILURE_REASON_INVALID_START_LINE = 3; /** * One or more of the header fields in the header section of the outgoing SIP message is invalid * or contains a restricted header value and the SIP message can not be sent. * {@link SipDelegateConnection}s can not send SIP SUBSCRIBE requests for the "Event" header * value of "presence". */ public static final int MESSAGE_FAILURE_REASON_INVALID_HEADER_FIELDS = 4; /** * The body content of the SIP message is invalid and the message can not be sent. */ public static final int MESSAGE_FAILURE_REASON_INVALID_BODY_CONTENT = 5; /** * The feature tag associated with the outgoing message does not match any known feature tags * or it matches a denied tag and this message can not be sent. */ public static final int MESSAGE_FAILURE_REASON_INVALID_FEATURE_TAG = 6; /** * The feature tag associated with the outgoing message is not enabled for the associated * SipDelegateConnection and can not be sent. */ public static final int MESSAGE_FAILURE_REASON_TAG_NOT_ENABLED_FOR_DELEGATE = 7; /** * The link to the network has been lost and the outgoing message has failed to send. *
* This message should be retried when connectivity to the network is re-established. See * {@link android.net.ConnectivityManager.NetworkCallback} for how this can be determined. */ public static final int MESSAGE_FAILURE_REASON_NETWORK_NOT_AVAILABLE = 8; /** * The outgoing SIP message has not been sent due to the SipDelegate not being registered for * IMS at this time. *
* This is considered a temporary failure, the message should not be retried until an IMS * registration change callback is received via * {@link DelegateConnectionStateCallback#onFeatureTagStatusChanged} */ public static final int MESSAGE_FAILURE_REASON_NOT_REGISTERED = 9; /** * The outgoing SIP message has not been sent because the {@link SipDelegateConfiguration} * version associated with the outgoing {@link SipMessage} is now stale and has failed * validation checks. *
* The @link SipMessage} should be recreated using the newest * {@link SipDelegateConfiguration} and sent again. */ public static final int MESSAGE_FAILURE_REASON_STALE_IMS_CONFIGURATION = 10; /** * The outgoing SIP message has not been sent because the internal state of the associated * {@link SipDelegate} is changing and has temporarily brought the transport down. *
* This is considered a temporary error and the {@link SipDelegateConnection} should resend the
* message once {@link DelegateRegistrationState#DEREGISTERING_REASON_FEATURE_TAGS_CHANGING} is
* no longer reported.
*/
public static final int MESSAGE_FAILURE_REASON_INTERNAL_DELEGATE_STATE_TRANSITION = 11;
/** @hide */
@Retention(RetentionPolicy.SOURCE)
@IntDef(prefix = "MESSAGE_FAILURE_REASON_", value = {
MESSAGE_FAILURE_REASON_UNKNOWN,
MESSAGE_FAILURE_REASON_DELEGATE_DEAD,
MESSAGE_FAILURE_REASON_DELEGATE_CLOSED,
MESSAGE_FAILURE_REASON_INVALID_START_LINE,
MESSAGE_FAILURE_REASON_INVALID_HEADER_FIELDS,
MESSAGE_FAILURE_REASON_INVALID_BODY_CONTENT,
MESSAGE_FAILURE_REASON_INVALID_FEATURE_TAG,
MESSAGE_FAILURE_REASON_TAG_NOT_ENABLED_FOR_DELEGATE,
MESSAGE_FAILURE_REASON_NETWORK_NOT_AVAILABLE,
MESSAGE_FAILURE_REASON_NOT_REGISTERED,
MESSAGE_FAILURE_REASON_STALE_IMS_CONFIGURATION,
MESSAGE_FAILURE_REASON_INTERNAL_DELEGATE_STATE_TRANSITION
})
public @interface MessageFailureReason {}
/**@hide*/
public static final ArrayMap
* If SIP delegates are not supported on this device or the carrier associated with this
* subscription, creating a SIP delegate will always fail, as this feature is not supported.
* @return true if this device supports creating a SIP delegate and the carrier associated with
* this subscription supports single registration, false if creating SIP delegates is not
* supported.
* @throws ImsException If the remote ImsService is not available for any reason or the
* subscription associated with this instance is no longer active. See
* {@link ImsException#getCode()} for more information.
*
* @see CarrierConfigManager.Ims#KEY_IMS_SINGLE_REGISTRATION_REQUIRED_BOOL
* @see PackageManager#FEATURE_TELEPHONY_IMS_SINGLE_REGISTRATION
*/
@RequiresPermission(anyOf = {Manifest.permission.READ_PRIVILEGED_PHONE_STATE,
Manifest.permission.PERFORM_IMS_SINGLE_REGISTRATION})
public boolean isSupported() throws ImsException {
try {
IImsRcsController controller = mBinderCache.getBinder();
if (controller == null) {
throw new ImsException("Telephony server is down",
ImsException.CODE_ERROR_SERVICE_UNAVAILABLE);
}
return controller.isSipDelegateSupported(mSubId);
} catch (ServiceSpecificException e) {
throw new ImsException(e.getMessage(), e.errorCode);
} catch (RemoteException e) {
throw new ImsException(e.getMessage(),
ImsException.CODE_ERROR_SERVICE_UNAVAILABLE);
}
}
/**
* Request that the ImsService implementation create a SipDelegate, which will configure the
* ImsService to forward SIP traffic that matches the filtering criteria set in supplied
* {@link DelegateRequest} to the application that the supplied callbacks are registered for.
*
* This API requires that the caller is running as part of a long-running process and will
* always be available to handle incoming messages. One mechanism that can be used for this is
* the {@link android.service.carrier.CarrierMessagingClientService}, which the framework keeps
* a persistent binding to when the app is the default SMS application.
*
* Note: the ability to create SipDelegates is only available applications running as the
* primary user.
* @param request The parameters that are associated with the SipDelegate creation request that
* will be used to create the SipDelegate connection.
* @param executor The executor that will be used to call the callbacks associated with this
* SipDelegate.
* @param dc The callback that will be used to notify the listener of the creation/destruction
* of the remote SipDelegate as well as changes to the state of the remote SipDelegate
* connection.
* @param mc The callback that will be used to notify the listener of new incoming SIP messages
* as well as the status of messages that were sent by the associated
* SipDelegateConnection.
* @throws ImsException Thrown if there was a problem communicating with the ImsService
* associated with this SipDelegateManager. See {@link ImsException#getCode()}.
*/
@RequiresPermission(Manifest.permission.PERFORM_IMS_SINGLE_REGISTRATION)
public void createSipDelegate(@NonNull DelegateRequest request, @NonNull Executor executor,
@NonNull DelegateConnectionStateCallback dc,
@NonNull DelegateConnectionMessageCallback mc) throws ImsException {
Objects.requireNonNull(request, "The DelegateRequest must not be null.");
Objects.requireNonNull(executor, "The Executor must not be null.");
Objects.requireNonNull(dc, "The DelegateConnectionStateCallback must not be null.");
Objects.requireNonNull(mc, "The DelegateConnectionMessageCallback must not be null.");
try {
SipDelegateConnectionAidlWrapper wrapper =
new SipDelegateConnectionAidlWrapper(executor, dc, mc);
IImsRcsController controller = mBinderCache.listenOnBinder(wrapper,
wrapper::binderDied);
if (controller == null) {
throw new ImsException("Telephony server is down",
ImsException.CODE_ERROR_SERVICE_UNAVAILABLE);
}
controller.createSipDelegate(mSubId, request, mContext.getOpPackageName(),
wrapper.getStateCallbackBinder(), wrapper.getMessageCallbackBinder());
} catch (ServiceSpecificException e) {
throw new ImsException(e.getMessage(), e.errorCode);
} catch (RemoteException e) {
throw new ImsException(e.getMessage(),
ImsException.CODE_ERROR_SERVICE_UNAVAILABLE);
}
}
/**
* Destroy a previously created {@link SipDelegateConnection} that was created using
* {@link #createSipDelegate}.
*
* This will also clean up all related callbacks in the associated ImsService.
* @param delegateConnection The SipDelegateConnection to destroy.
* @param reason The reason for why this SipDelegateConnection was destroyed.
*/
@RequiresPermission(Manifest.permission.PERFORM_IMS_SINGLE_REGISTRATION)
public void destroySipDelegate(@NonNull SipDelegateConnection delegateConnection,
@SipDelegateDestroyReason int reason) {
Objects.requireNonNull(delegateConnection, "SipDelegateConnection can not be null.");
if (delegateConnection instanceof SipDelegateConnectionAidlWrapper) {
SipDelegateConnectionAidlWrapper w =
(SipDelegateConnectionAidlWrapper) delegateConnection;
try {
IImsRcsController c = mBinderCache.removeRunnable(w);
c.destroySipDelegate(mSubId, w.getSipDelegateBinder(), reason);
} catch (RemoteException e) {
// Connection to telephony died, but this will signal destruction of SipDelegate
// eventually anyway, so return normally.
try {
w.getStateCallbackBinder().onDestroyed(
SipDelegateManager.SIP_DELEGATE_DESTROY_REASON_REQUESTED_BY_APP);
} catch (RemoteException ignore) {
// Local to process.
}
}
} else {
throw new IllegalArgumentException("Unknown SipDelegateConnection implementation passed"
+ " into this method");
}
}
/**
* Trigger a full network registration as required by receiving a SIP message containing a
* permanent error from the network or never receiving a response to a SIP transaction request.
*
* @param connection The {@link SipDelegateConnection} that was being used when this error was
* received.
* @param sipCode The SIP code response associated with the SIP message request that
* triggered this condition.
* @param sipReason The SIP reason code associated with the SIP message request that triggered
* this condition. May be {@code null} if there was no reason String provided from the
* network.
*/
@RequiresPermission(Manifest.permission.PERFORM_IMS_SINGLE_REGISTRATION)
public void triggerFullNetworkRegistration(@NonNull SipDelegateConnection connection,
@IntRange(from = 100, to = 699) int sipCode, @Nullable String sipReason) {
Objects.requireNonNull(connection, "SipDelegateConnection can not be null.");
if (connection instanceof SipDelegateConnectionAidlWrapper) {
SipDelegateConnectionAidlWrapper w = (SipDelegateConnectionAidlWrapper) connection;
try {
IImsRcsController controller = mBinderCache.getBinder();
controller.triggerNetworkRegistration(mSubId, w.getSipDelegateBinder(), sipCode,
sipReason);
} catch (RemoteException e) {
// Connection to telephony died, but this will signal destruction of SipDelegate
// eventually anyway, so return.
}
} else {
throw new IllegalArgumentException("Unknown SipDelegateConnection implementation passed"
+ " into this method");
}
}
/**
* Register a new callback, which is used to notify the registrant of changes to
* the state of the underlying IMS service that is attached to telephony to
* implement IMS functionality. If the manager is created for
* the {@link android.telephony.SubscriptionManager#DEFAULT_SUBSCRIPTION_ID},
* this throws an {@link ImsException}.
*
* Requires Permission:
* {@link android.Manifest.permission#READ_PRECISE_PHONE_STATE READ_PRECISE_PHONE_STATE}
* or that the calling app has carrier privileges
* (see {@link android.telephony.TelephonyManager#hasCarrierPrivileges}).
*
* @param executor the Executor that will be used to call the {@link ImsStateCallback}.
* @param callback The callback instance being registered.
* @throws ImsException in the case that the callback can not be registered.
* See {@link ImsException#getCode} for more information on when this is called.
*/
@RequiresPermission(anyOf = {Manifest.permission.READ_PRIVILEGED_PHONE_STATE,
Manifest.permission.PERFORM_IMS_SINGLE_REGISTRATION})
public void registerImsStateCallback(@NonNull Executor executor,
@NonNull ImsStateCallback callback) throws ImsException {
Objects.requireNonNull(callback, "Must include a non-null ImsStateCallback.");
Objects.requireNonNull(executor, "Must include a non-null Executor.");
callback.init(executor);
ITelephony telephony = mTelephonyBinderCache.listenOnBinder(callback, callback::binderDied);
if (telephony == null) {
throw new ImsException("Telephony server is down",
ImsException.CODE_ERROR_SERVICE_UNAVAILABLE);
}
try {
telephony.registerImsStateCallback(
mSubId, ImsFeature.FEATURE_RCS,
callback.getCallbackBinder(), mContext.getOpPackageName());
} catch (ServiceSpecificException e) {
throw new ImsException(e.getMessage(), e.errorCode);
} catch (RemoteException | IllegalStateException e) {
throw new ImsException(e.getMessage(), ImsException.CODE_ERROR_SERVICE_UNAVAILABLE);
}
}
/**
* Unregisters a previously registered callback.
*
* @param callback The callback instance to be unregistered.
*/
public void unregisterImsStateCallback(@NonNull ImsStateCallback callback) {
Objects.requireNonNull(callback, "Must include a non-null ImsStateCallback.");
ITelephony telephony = mTelephonyBinderCache.removeRunnable(callback);
try {
if (telephony != null) {
telephony.unregisterImsStateCallback(callback.getCallbackBinder());
}
} catch (RemoteException ignore) {
// ignore it
}
}
/**
* Register a new callback, which is used to notify the registrant of changes
* to the state of the Sip Sessions managed remotely by the IMS stack.
*
* Requires Permission:
* {@link android.Manifest.permission#READ_PRIVILEGED_PHONE_STATE}
*
* @param executor the Executor that will be used to call the {@link SipDialogStateCallback}.
* @param callback The callback instance being registered.
* @throws ImsException in the case that the callback can not be registered.
* See {@link ImsException#getCode} for more information on when this is called.
* @throws UnsupportedOperationException If the device does not have
* {@link PackageManager#FEATURE_TELEPHONY_IMS_SINGLE_REGISTRATION}.
*/
@RequiresPermission(Manifest.permission.READ_PRIVILEGED_PHONE_STATE)
public void registerSipDialogStateCallback(@NonNull Executor executor,
@NonNull SipDialogStateCallback callback) throws ImsException {
Objects.requireNonNull(callback, "Must include a non-null SipDialogStateCallback.");
Objects.requireNonNull(executor, "Must include a non-null Executor.");
callback.attachExecutor(executor);
try {
IImsRcsController controller = mBinderCache.listenOnBinder(
callback, callback::binderDied);
if (controller == null) {
throw new ImsException("Telephony server is down",
ImsException.CODE_ERROR_SERVICE_UNAVAILABLE);
}
controller.registerSipDialogStateCallback(mSubId, callback.getCallbackBinder());
} catch (ServiceSpecificException e) {
throw new ImsException(e.getMessage(), e.errorCode);
} catch (RemoteException e) {
throw new ImsException(e.getMessage(), ImsException.CODE_ERROR_SERVICE_UNAVAILABLE);
} catch (IllegalStateException e) {
throw new IllegalStateException(e.getMessage());
}
}
/**
* Unregisters a previously registered callback.
*
* Requires Permission:
* {@link android.Manifest.permission#READ_PRIVILEGED_PHONE_STATE}
*
* @param callback The callback instance to be unregistered.
*
* @throws UnsupportedOperationException If the device does not have
* {@link PackageManager#FEATURE_TELEPHONY_IMS_SINGLE_REGISTRATION}.
*/
@RequiresPermission(Manifest.permission.READ_PRIVILEGED_PHONE_STATE)
public void unregisterSipDialogStateCallback(@NonNull SipDialogStateCallback callback)
throws ImsException {
Objects.requireNonNull(callback, "Must include a non-null SipDialogStateCallback.");
IImsRcsController controller = mBinderCache.removeRunnable(callback);
try {
if (controller == null) {
throw new ImsException("Telephony server is down",
ImsException.CODE_ERROR_SERVICE_UNAVAILABLE);
}
controller.unregisterSipDialogStateCallback(mSubId, callback.getCallbackBinder());
} catch (ServiceSpecificException e) {
throw new ImsException(e.getMessage(), e.errorCode);
} catch (RemoteException e) {
throw new ImsException(e.getMessage(), ImsException.CODE_ERROR_SERVICE_UNAVAILABLE);
} catch (IllegalStateException e) {
throw new IllegalStateException(e.getMessage());
}
}
}