1 /* 2 * Copyright (C) 2014 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17 package android.telecom; 18 19 import android.net.Uri; 20 import android.os.IBinder; 21 import android.os.IBinder.DeathRecipient; 22 import android.os.RemoteException; 23 24 import com.android.internal.telecom.IConnectionService; 25 import com.android.internal.telecom.IConnectionServiceAdapter; 26 import com.android.internal.telecom.IVideoProvider; 27 import com.android.internal.telecom.RemoteServiceCallback; 28 29 import java.util.ArrayList; 30 import java.util.HashMap; 31 import java.util.HashSet; 32 import java.util.Map; 33 import java.util.Set; 34 import java.util.List; 35 import java.util.UUID; 36 37 /** 38 * Remote connection service which other connection services can use to place calls on their behalf. 39 * 40 * @hide 41 */ 42 final class RemoteConnectionService { 43 44 // Note: Casting null to avoid ambiguous constructor reference. 45 private static final RemoteConnection NULL_CONNECTION = 46 new RemoteConnection("NULL", null, (ConnectionRequest) null); 47 48 private static final RemoteConference NULL_CONFERENCE = 49 new RemoteConference("NULL", null); 50 51 private final IConnectionServiceAdapter mServantDelegate = new IConnectionServiceAdapter() { 52 @Override 53 public void handleCreateConnectionComplete( 54 String id, 55 ConnectionRequest request, 56 ParcelableConnection parcel) { 57 RemoteConnection connection = 58 findConnectionForAction(id, "handleCreateConnectionSuccessful"); 59 if (connection != NULL_CONNECTION && mPendingConnections.contains(connection)) { 60 mPendingConnections.remove(connection); 61 // Unconditionally initialize the connection ... 62 connection.setConnectionCapabilities(parcel.getConnectionCapabilities()); 63 connection.setAddress( 64 parcel.getHandle(), parcel.getHandlePresentation()); 65 connection.setCallerDisplayName( 66 parcel.getCallerDisplayName(), 67 parcel.getCallerDisplayNamePresentation()); 68 // Set state after handle so that the client can identify the connection. 69 if (parcel.getState() == Connection.STATE_DISCONNECTED) { 70 connection.setDisconnected(parcel.getDisconnectCause()); 71 } else { 72 connection.setState(parcel.getState()); 73 } 74 List<RemoteConnection> conferenceable = new ArrayList<>(); 75 for (String confId : parcel.getConferenceableConnectionIds()) { 76 if (mConnectionById.containsKey(confId)) { 77 conferenceable.add(mConnectionById.get(confId)); 78 } 79 } 80 connection.setConferenceableConnections(conferenceable); 81 connection.setVideoState(parcel.getVideoState()); 82 if (connection.getState() == Connection.STATE_DISCONNECTED) { 83 // ... then, if it was created in a disconnected state, that indicates 84 // failure on the providing end, so immediately mark it destroyed 85 connection.setDestroyed(); 86 } 87 } 88 } 89 90 @Override 91 public void setActive(String callId) { 92 if (mConnectionById.containsKey(callId)) { 93 findConnectionForAction(callId, "setActive") 94 .setState(Connection.STATE_ACTIVE); 95 } else { 96 findConferenceForAction(callId, "setActive") 97 .setState(Connection.STATE_ACTIVE); 98 } 99 } 100 101 @Override 102 public void setRinging(String callId) { 103 findConnectionForAction(callId, "setRinging") 104 .setState(Connection.STATE_RINGING); 105 } 106 107 @Override 108 public void setDialing(String callId) { 109 findConnectionForAction(callId, "setDialing") 110 .setState(Connection.STATE_DIALING); 111 } 112 113 @Override 114 public void setDisconnected(String callId, DisconnectCause disconnectCause) { 115 if (mConnectionById.containsKey(callId)) { 116 findConnectionForAction(callId, "setDisconnected") 117 .setDisconnected(disconnectCause); 118 } else { 119 findConferenceForAction(callId, "setDisconnected") 120 .setDisconnected(disconnectCause); 121 } 122 } 123 124 @Override 125 public void setOnHold(String callId) { 126 if (mConnectionById.containsKey(callId)) { 127 findConnectionForAction(callId, "setOnHold") 128 .setState(Connection.STATE_HOLDING); 129 } else { 130 findConferenceForAction(callId, "setOnHold") 131 .setState(Connection.STATE_HOLDING); 132 } 133 } 134 135 @Override 136 public void setRingbackRequested(String callId, boolean ringing) { 137 findConnectionForAction(callId, "setRingbackRequested") 138 .setRingbackRequested(ringing); 139 } 140 141 @Override 142 public void setConnectionCapabilities(String callId, int connectionCapabilities) { 143 if (mConnectionById.containsKey(callId)) { 144 findConnectionForAction(callId, "setConnectionCapabilities") 145 .setConnectionCapabilities(connectionCapabilities); 146 } else { 147 findConferenceForAction(callId, "setConnectionCapabilities") 148 .setConnectionCapabilities(connectionCapabilities); 149 } 150 } 151 152 @Override 153 public void setIsConferenced(String callId, String conferenceCallId) { 154 // Note: callId should not be null; conferenceCallId may be null 155 RemoteConnection connection = 156 findConnectionForAction(callId, "setIsConferenced"); 157 if (connection != NULL_CONNECTION) { 158 if (conferenceCallId == null) { 159 // 'connection' is being split from its conference 160 if (connection.getConference() != null) { 161 connection.getConference().removeConnection(connection); 162 } 163 } else { 164 RemoteConference conference = 165 findConferenceForAction(conferenceCallId, "setIsConferenced"); 166 if (conference != NULL_CONFERENCE) { 167 conference.addConnection(connection); 168 } 169 } 170 } 171 } 172 173 @Override 174 public void addConferenceCall( 175 final String callId, 176 ParcelableConference parcel) { 177 RemoteConference conference = new RemoteConference(callId, 178 mOutgoingConnectionServiceRpc); 179 180 for (String id : parcel.getConnectionIds()) { 181 RemoteConnection c = mConnectionById.get(id); 182 if (c != null) { 183 conference.addConnection(c); 184 } 185 } 186 187 if (conference.getConnections().size() == 0) { 188 // A conference was created, but none of its connections are ones that have been 189 // created by, and therefore being tracked by, this remote connection service. It 190 // is of no interest to us. 191 return; 192 } 193 194 conference.setState(parcel.getState()); 195 conference.setConnectionCapabilities(parcel.getConnectionCapabilities()); 196 mConferenceById.put(callId, conference); 197 conference.registerCallback(new RemoteConference.Callback() { 198 @Override 199 public void onDestroyed(RemoteConference c) { 200 mConferenceById.remove(callId); 201 maybeDisconnectAdapter(); 202 } 203 }); 204 205 mOurConnectionServiceImpl.addRemoteConference(conference); 206 } 207 208 @Override 209 public void removeCall(String callId) { 210 if (mConnectionById.containsKey(callId)) { 211 findConnectionForAction(callId, "removeCall") 212 .setDestroyed(); 213 } else { 214 findConferenceForAction(callId, "removeCall") 215 .setDestroyed(); 216 } 217 } 218 219 @Override 220 public void onPostDialWait(String callId, String remaining) { 221 findConnectionForAction(callId, "onPostDialWait") 222 .setPostDialWait(remaining); 223 } 224 225 @Override 226 public void onPostDialChar(String callId, char nextChar) { 227 findConnectionForAction(callId, "onPostDialChar") 228 .onPostDialChar(nextChar); 229 } 230 231 @Override 232 public void queryRemoteConnectionServices(RemoteServiceCallback callback) { 233 // Not supported from remote connection service. 234 } 235 236 @Override 237 public void setVideoProvider(String callId, IVideoProvider videoProvider) { 238 RemoteConnection.VideoProvider remoteVideoProvider = null; 239 if (videoProvider != null) { 240 remoteVideoProvider = new RemoteConnection.VideoProvider(videoProvider); 241 } 242 findConnectionForAction(callId, "setVideoProvider") 243 .setVideoProvider(remoteVideoProvider); 244 } 245 246 @Override 247 public void setVideoState(String callId, int videoState) { 248 findConnectionForAction(callId, "setVideoState") 249 .setVideoState(videoState); 250 } 251 252 @Override 253 public void setIsVoipAudioMode(String callId, boolean isVoip) { 254 findConnectionForAction(callId, "setIsVoipAudioMode") 255 .setIsVoipAudioMode(isVoip); 256 } 257 258 @Override 259 public void setStatusHints(String callId, StatusHints statusHints) { 260 findConnectionForAction(callId, "setStatusHints") 261 .setStatusHints(statusHints); 262 } 263 264 @Override 265 public void setAddress(String callId, Uri address, int presentation) { 266 findConnectionForAction(callId, "setAddress") 267 .setAddress(address, presentation); 268 } 269 270 @Override 271 public void setCallerDisplayName(String callId, String callerDisplayName, 272 int presentation) { 273 findConnectionForAction(callId, "setCallerDisplayName") 274 .setCallerDisplayName(callerDisplayName, presentation); 275 } 276 277 @Override 278 public IBinder asBinder() { 279 throw new UnsupportedOperationException(); 280 } 281 282 @Override 283 public final void setConferenceableConnections( 284 String callId, List<String> conferenceableConnectionIds) { 285 List<RemoteConnection> conferenceable = new ArrayList<>(); 286 for (String id : conferenceableConnectionIds) { 287 if (mConnectionById.containsKey(id)) { 288 conferenceable.add(mConnectionById.get(id)); 289 } 290 } 291 292 if (hasConnection(callId)) { 293 findConnectionForAction(callId, "setConferenceableConnections") 294 .setConferenceableConnections(conferenceable); 295 } else { 296 findConferenceForAction(callId, "setConferenceableConnections") 297 .setConferenceableConnections(conferenceable); 298 } 299 } 300 301 @Override 302 public void addExistingConnection(String callId, ParcelableConnection connection) { 303 // TODO: add contents of this method 304 RemoteConnection remoteConnction = new RemoteConnection(callId, 305 mOutgoingConnectionServiceRpc, connection); 306 307 mOurConnectionServiceImpl.addRemoteExistingConnection(remoteConnction); 308 } 309 }; 310 311 private final ConnectionServiceAdapterServant mServant = 312 new ConnectionServiceAdapterServant(mServantDelegate); 313 314 private final DeathRecipient mDeathRecipient = new DeathRecipient() { 315 @Override 316 public void binderDied() { 317 for (RemoteConnection c : mConnectionById.values()) { 318 c.setDestroyed(); 319 } 320 for (RemoteConference c : mConferenceById.values()) { 321 c.setDestroyed(); 322 } 323 mConnectionById.clear(); 324 mConferenceById.clear(); 325 mPendingConnections.clear(); 326 mOutgoingConnectionServiceRpc.asBinder().unlinkToDeath(mDeathRecipient, 0); 327 } 328 }; 329 330 private final IConnectionService mOutgoingConnectionServiceRpc; 331 private final ConnectionService mOurConnectionServiceImpl; 332 private final Map<String, RemoteConnection> mConnectionById = new HashMap<>(); 333 private final Map<String, RemoteConference> mConferenceById = new HashMap<>(); 334 private final Set<RemoteConnection> mPendingConnections = new HashSet<>(); 335 336 RemoteConnectionService( 337 IConnectionService outgoingConnectionServiceRpc, 338 ConnectionService ourConnectionServiceImpl) throws RemoteException { 339 mOutgoingConnectionServiceRpc = outgoingConnectionServiceRpc; 340 mOutgoingConnectionServiceRpc.asBinder().linkToDeath(mDeathRecipient, 0); 341 mOurConnectionServiceImpl = ourConnectionServiceImpl; 342 } 343 344 @Override 345 public String toString() { 346 return "[RemoteCS - " + mOutgoingConnectionServiceRpc.asBinder().toString() + "]"; 347 } 348 349 final RemoteConnection createRemoteConnection( 350 PhoneAccountHandle connectionManagerPhoneAccount, 351 ConnectionRequest request, 352 boolean isIncoming) { 353 final String id = UUID.randomUUID().toString(); 354 final ConnectionRequest newRequest = new ConnectionRequest( 355 request.getAccountHandle(), 356 request.getAddress(), 357 request.getExtras(), 358 request.getVideoState()); 359 try { 360 if (mConnectionById.isEmpty()) { 361 mOutgoingConnectionServiceRpc.addConnectionServiceAdapter(mServant.getStub()); 362 } 363 RemoteConnection connection = 364 new RemoteConnection(id, mOutgoingConnectionServiceRpc, newRequest); 365 mPendingConnections.add(connection); 366 mConnectionById.put(id, connection); 367 mOutgoingConnectionServiceRpc.createConnection( 368 connectionManagerPhoneAccount, 369 id, 370 newRequest, 371 isIncoming, 372 false /* isUnknownCall */); 373 connection.registerCallback(new RemoteConnection.Callback() { 374 @Override 375 public void onDestroyed(RemoteConnection connection) { 376 mConnectionById.remove(id); 377 maybeDisconnectAdapter(); 378 } 379 }); 380 return connection; 381 } catch (RemoteException e) { 382 return RemoteConnection.failure( 383 new DisconnectCause(DisconnectCause.ERROR, e.toString())); 384 } 385 } 386 387 private boolean hasConnection(String callId) { 388 return mConnectionById.containsKey(callId); 389 } 390 391 private RemoteConnection findConnectionForAction( 392 String callId, String action) { 393 if (mConnectionById.containsKey(callId)) { 394 return mConnectionById.get(callId); 395 } 396 Log.w(this, "%s - Cannot find Connection %s", action, callId); 397 return NULL_CONNECTION; 398 } 399 400 private RemoteConference findConferenceForAction( 401 String callId, String action) { 402 if (mConferenceById.containsKey(callId)) { 403 return mConferenceById.get(callId); 404 } 405 Log.w(this, "%s - Cannot find Conference %s", action, callId); 406 return NULL_CONFERENCE; 407 } 408 409 private void maybeDisconnectAdapter() { 410 if (mConnectionById.isEmpty() && mConferenceById.isEmpty()) { 411 try { 412 mOutgoingConnectionServiceRpc.removeConnectionServiceAdapter(mServant.getStub()); 413 } catch (RemoteException e) { 414 } 415 } 416 } 417 } 418
