code.delx.au - pymsnt/blob - src/tlib/msn/msnw.py

   1 # Copyright 2004-2005 James Bunton <james@delx.cjb.net>
   2 # Licensed for distribution under the GPL version 2, check COPYING for details
   3
   4 # Twisted imports
   5 from twisted.internet import reactor
   6 from twisted.internet.defer import Deferred
   7 from twisted.internet.protocol import ClientFactory
   8
   9 # System imports
  10 import math, base64, binascii
  11
  12 # Local imports
  13 from debug import LogEvent, INFO, WARN, ERROR
  14 from tlib.msn import msn
  15
  16
  17
  18 """
  19 All interaction should be with the MSNConnection and MultiSwitchboardSession classes.
  20 You should not directly instantiate any objects of other classes.
  21 """
  22
  23 class MSNConnection:
  24         """ Manages all the Twisted factories, etc """
  25         MAXMESSAGESIZE     = 1400
  26         SWITCHBOARDTIMEOUT = 30.0*60.0
  27         GETALLAVATARS      = False
  28
  29         def __init__(self, username, password, ident):
  30                 """ Connects to the MSN servers.
  31                 @param username: the MSN passport to connect with.
  32                 @param password: the password for this account.
  33                 @param ident: a unique identifier to use in logging.
  34                 """
  35                 self.username = username
  36                 self.password = password
  37                 self.ident = ident
  38                 self.timeout = None
  39                 self.notificationFactory = None
  40                 self.notificationClient = None
  41                 self.connect()
  42                 LogEvent(INFO, self.ident)
  43
  44         def connect(self):
  45                 """ Automatically called by the constructor """
  46                 self.connectors = []
  47                 self.switchboardSessions = {}
  48                 self.savedEvents = SavedEvents() # Save any events that occur before connect
  49                 self._getNotificationReferral()
  50
  51         def _getNotificationReferral(self):
  52                 def timeout():
  53                         self.timeout = None
  54                         if not d.called:
  55                                 d.errback(Exception("Timeout"))
  56                                 self.logOut() # Clean up everything
  57                 self.timeout = reactor.callLater(30, timeout)
  58                 dispatchFactory = msn.DispatchFactory()
  59                 dispatchFactory.userHandle = self.username
  60                 dispatchFactory.protocol = DispatchClient
  61                 d = Deferred()
  62                 dispatchFactory.d = d
  63                 d.addCallbacks(self._gotNotificationReferral, self.connectionFailed)
  64                 self.connectors.append(reactor.connectTCP("messenger.hotmail.com", 1863, dispatchFactory))
  65                 LogEvent(INFO, self.ident)
  66
  67         def _gotNotificationReferral(self, (host, port)):
  68                 self.timeout.cancel()
  69                 self.timeout = None
  70                 # Create the NotificationClient
  71                 self.notificationFactory = msn.NotificationFactory()
  72                 self.notificationFactory.userHandle = self.username
  73                 self.notificationFactory.password = self.password
  74                 self.notificationFactory.msncon = self
  75                 self.notificationFactory.protocol = NotificationClient
  76                 self.connectors.append(reactor.connectTCP(host, port, self.notificationFactory))
  77                 LogEvent(INFO, self.ident)
  78
  79         def _sendSavedEvents(self):
  80                 self.savedEvents.send(self)
  81
  82         def _notificationClientReady(self, notificationClient):
  83                 self.notificationClient = notificationClient
  84
  85         def _ensureSwitchboardSession(self, userHandle):
  86                 if not self.switchboardSessions.has_key(userHandle):
  87                         sb = OneSwitchboardSession(self, userHandle)
  88                         sb.connect()
  89                         self.switchboardSessions[userHandle] = sb
  90
  91
  92
  93         # API calls
  94         def getContacts(self):
  95                 """ Gets the contact list.
  96
  97                 @return an instance of MSNContactList (do not modify) if connected,
  98                                 or None if not.
  99                 """
 100                 if self.notificationFactory:
 101                         return self.notificationFactory.contacts
 102                 else:
 103                         return None
 104
 105         def sendMessage(self, userHandle, text, noerror=False):
 106                 """
 107                 Sends a message to a contact. Can only be called after listSynchronized().
 108
 109                 @param userHandle: the contact's MSN passport.
 110                 @param text: the text to send.
 111                 @param noerror: Set this to True if you don't want failed messages to bounce.
 112                 """
 113                 LogEvent(INFO, self.ident)
 114                 if self.notificationClient:
 115                         self._ensureSwitchboardSession(userHandle)
 116                         self.switchboardSessions[userHandle].sendMessage(text, noerror)
 117                 elif not noerror:
 118                         self.failedMessage(userHandle, text)
 119
 120         def sendAvatarRequest(self, userHandle):
 121                 """
 122                 Requests the avatar of a contact.
 123
 124                 @param userHandle: the contact to request an avatar from.
 125                 @return: a Deferred() if the avatar can be fetched at this time.
 126                          This will fire with an argument of a tuple with the PNG
 127                                  image data as the only element.
 128                                  Otherwise returns None
 129                 """
 130
 131                 LogEvent(INFO, self.ident)
 132                 if not self.notificationClient: return
 133                 if MSNConnection.GETALLAVATARS:
 134                         self._ensureSwitchboardSession(userHandle)
 135                 sb = self.switchboardSessions.get(userHandle)
 136                 if sb: return sb.sendAvatarRequest()
 137
 138         def sendFile(self, userHandle, filename, filesize):
 139                 """
 140                 Used to send a file to a contact.
 141
 142                 @param username: the passport of the contact to send a file to.
 143                 @param filename: the name of the file to send.
 144                 @param filesize: the size of the file to send.
 145
 146                 @return: A Deferred, which will fire with an argument of:
 147                          (fileSend, d) A FileSend object and a Deferred.
 148                          The new Deferred will pass one argument in a tuple,
 149                          whether or not the transfer is accepted. If you
 150                          receive a True, then you can call write() on the
 151                          fileSend object to send your file. Call close()
 152                          when the file is done.
 153                          NOTE: You MUST write() exactly as much as you
 154                          declare in filesize.
 155                 """
 156                 msnContact = self.getContacts().getContact(userHandle)
 157                 if not msnContact:
 158                         raise ValueError, "Contact not found"
 159                 self._ensureSwitchboardSession(userHandle)
 160                 return self.switchboardSessions[userHandle].sendFile(msnContact, filename, filesize)
 161
 162         def sendTypingToContact(self, userHandle):
 163                 """
 164                 Sends typing notification to a contact. Should send every 5secs.
 165                 @param userHandle: the contact to notify of our typing.
 166                 """
 167
 168                 sb = self.switchboardSessions.get(userHandle)
 169                 if sb: return sb.sendTypingNotification()
 170
 171         def changeAvatar(self, imageData):
 172                 """
 173                 Changes the user's avatar.
 174                 @param imageData: the new PNG avatar image data.
 175                 """
 176                 if self.notificationClient:
 177                         LogEvent(INFO, self.ident)
 178                         self.notificationClient.changeAvatar(imageData, push=True)
 179                 # Save the avatar for reuse on disconnection
 180                 self.savedEvents.avatarImageData = imageData
 181
 182         def changeStatus(self, statusCode, screenName, personal):
 183                 """
 184                 Changes your status details. All details must be given with
 185                 each call. This can be called before connection if you wish.
 186
 187                 @param statusCode: the user's new status (look in msn.statusCodes).
 188                 @param screenName: the user's new screenName (up to 127 characters).
 189                 @param personal: the user's new personal message.
 190                 """
 191
 192                 if not screenName: screenName = self.username
 193                 if not statusCode: statusCode = msn.STATUS_ONLINE
 194                 if not personal: personal = ""
 195                 if self.notificationClient:
 196                         changeCount = [0] # Hack
 197                         def cb(ignored=None):
 198                                 changeCount[0] += 1
 199                                 if changeCount[0] == 3:
 200                                         self.ourStatusChanged(statusCode, screenName, personal)
 201                         LogEvent(INFO, self.ident)
 202                         self.notificationClient.changeStatus(statusCode.encode("utf-8")).addCallback(cb)
 203                         self.notificationClient.changeScreenName(screenName.encode("utf-8")).addCallback(cb)
 204                         self.notificationClient.changePersonalMessage(personal.encode("utf-8")).addCallback(cb)
 205                 # Remember the saved status
 206                 self.savedEvents.statusCode = statusCode
 207                 self.savedEvents.screenName = screenName
 208                 self.savedEvents.personal = personal
 209
 210         def addContact(self, listType, userHandle):
 211                 """ See msn.NotificationClient.addContact """
 212                 if self.notificationClient:
 213                         return self.notificationClient.addContact(listType, str(userHandle))
 214                 else:
 215                         self.savedEvents.addContacts.append((listType, str(userHandle)))
 216
 217         def remContact(self, listType, userHandle):
 218                 """ See msn.NotificationClient.remContact """
 219                 if self.notificationClient:
 220                         return self.notificationClient.remContact(listType, str(userHandle))
 221                 else:
 222                         self.savedEvents.remContacts.append((listType, str(userHandle)))
 223
 224         def logOut(self):
 225                 """ Shuts down the whole connection. Don't try to call any
 226                 other methods after this one. Except maybe connect() """
 227                 if self.notificationClient:
 228                         self.notificationClient.logOut()
 229                 for c in self.connectors:
 230                         c.disconnect()
 231                 if self.notificationFactory:
 232                         self.notificationFactory.msncon = None
 233                 self.connectors = []
 234                 for sbs in self.switchboardSessions.values():
 235                         if hasattr(sbs, "transport") and sbs.transport:
 236                                 sbs.transport.loseConnection()
 237                 self.switchboardSessions = {}
 238                 if self.timeout:
 239                         self.timeout.cancel()
 240                         self.timeout = None
 241                 LogEvent(INFO, self.ident)
 242
 243
 244         # Reimplement these!
 245         def connectionFailed(self, reason=''):
 246                 """ Called when the connection to the server failed. """
 247
 248         def loginFailed(self, reason=''):
 249                 """ Called when the account could not be logged in. """
 250
 251         def connectionLost(self, reason=''):
 252                 """ Called when we are disconnected. """
 253
 254         def multipleLogin(self):
 255                 """ Called when the server says there has been another login
 256                 for this account. """
 257
 258         def serverGoingDown(self):
 259                 """ Called when the server says that it will be going down. """
 260
 261         def accountNotVerified(self):
 262                 """ Called if this passport has not been verified. Certain
 263                 functions are not available. """
 264
 265         def userMapping(self, passport, jid):
 266                 """ Called when it is brought to our attention that one of the
 267                 MSN contacts has a Jabber ID. You should communicate with Jabber. """
 268
 269         def loggedIn(self):
 270                 """ Called when we have authenticated, but before we receive
 271                 the contact list. """
 272
 273         def listSynchronized(self):
 274                 """ Called when we have received the contact list. All methods
 275                 in this class are now valid. """
 276
 277         def ourStatusChanged(self, statusCode, screenName, personal):
 278                 """ Called when the user's status has changed. """
 279
 280         def gotMessage(self, userHandle, text):
 281                 """ Called when a contact sends us a message """
 282
 283         def gotGroupchat(self, msnGroupchat, userHandle):
 284                 """ Called when a conversation with more than one contact begins.
 285                 userHandle is the person who invited us.
 286                 The overriding method is expected to set msnGroupchat.groupchat to an object
 287                 that implements the following methods:
 288                         contactJoined(userHandle)
 289                         contactLeft(userHandle)
 290                         gotMessage(userHandle, text)
 291
 292                 The object received as 'msnGroupchat' is an instance of MultiSwitchboardSession.
 293                 """
 294
 295         def gotContactTyping(self, userHandle):
 296                 """ Called when a contact sends typing notification.
 297                     Will be called once every 5 seconds. """
 298
 299         def failedMessage(self, userHandle, text):
 300                 """ Called when a message we sent has been bounced back. """
 301
 302         def contactAvatarChanged(self, userHandle, hash):
 303                 """ Called when we receive a changed avatar hash for a contact.
 304                 You should call sendAvatarRequest(). """
 305
 306         def contactStatusChanged(self, userHandle):
 307                 """ Called when we receive status information for a contact. """
 308
 309         def gotFileReceive(self, fileReceive):
 310                 """ Called when a contact sends the user a file.
 311                 Call accept(fileHandle) or reject() on the object. """
 312
 313         def contactAddedMe(self, userHandle):
 314                 """ Called when a contact adds the user to their list. """
 315
 316         def contactRemovedMe(self, userHandle):
 317                 """ Called when a contact removes the user from their list. """
 318
 319         def gotInitialEmailNotification(self, inboxunread, foldersunread):
 320                 """ Received at login to tell about the user's Hotmail status """
 321
 322         def gotRealtimeEmailNotification(self, mailfrom, fromaddr, subject):
 323                 """ Received in realtime whenever an email comes into the hotmail account """
 324
 325         def gotMSNAlert(self, body, action, subscr):
 326                 """ An MSN Alert (http://alerts.msn.com) was received. Body is the
 327                 text of the alert. 'action' is a url for more information,
 328                 'subscr' is a url to modify your your alerts subscriptions. """
 329
 330         def gotAvatarImageData(self, userHandle, imageData):
 331                 """ An contact's avatar has been received because a switchboard
 332                 session with them was started. """
 333
 334
 335 class SavedEvents:
 336         def __init__(self):
 337                 self.screenName = ""
 338                 self.statusCode = ""
 339                 self.personal = ""
 340                 self.avatarImageData = ""
 341                 self.addContacts = []
 342                 self.remContacts = []
 343
 344         def send(self, msncon):
 345                 if self.avatarImageData:
 346                         msncon.notificationClient.changeAvatar(self.avatarImageData, push=False)
 347                 if self.screenName or self.statusCode or self.personal:
 348                         msncon.changeStatus(self.statusCode, self.screenName, self.personal)
 349                 for listType, userHandle in self.addContacts:
 350                         msncon.addContact(listType, userHandle)
 351                 for listType, userHandle in self.remContacts:
 352                         msncon.remContact(listType, userHandle)
 353
 354
 355
 356 class DispatchClient(msn.DispatchClient):
 357         def gotNotificationReferral(self, host, port):
 358                 if self.factory.d.called: return # Too slow! We've already timed out
 359                 self.factory.d.callback((host, port))
 360
 361
 362 class NotificationClient(msn.NotificationClient):
 363         def doDisconnect(self, *args):
 364                 if hasattr(self, "transport") and self.transport:
 365                         self.transport.loseConnection()
 366
 367         def loginFailure(self, message):
 368                 self.factory.msncon.loginFailed(message)
 369
 370         def loggedIn(self, userHandle, verified):
 371                 LogEvent(INFO, self.factory.msncon.ident)
 372                 msn.NotificationClient.loggedIn(self, userHandle, verified)
 373                 self.factory.msncon._notificationClientReady(self)
 374                 self.factory.msncon.loggedIn()
 375                 if not verified:
 376                         self.factory.msncon.accountNotVerified()
 377
 378         def logOut(self):
 379                 msn.NotificationClient.logOut(self)
 380                 # If we explicitly log out, then all of these events
 381                 # are now redundant
 382                 self.loginFailure = self.doDisconnect
 383                 self.loggedIn = self.doDisconnect
 384                 self.connectionLost = self.doDisconnect
 385
 386         def connectionLost(self, reason):
 387                 if not self.ready: return
 388                 def wait():
 389                         LogEvent(INFO, self.factory.msncon.ident)
 390                         msn.NotificationClient.connectionLost(self, reason)
 391                         if self.factory.maxRetries >= self.factory.retries:
 392                                 self.factory.msncon.connectionLost(reason)
 393                 # Make sure this event is handled after any others
 394                 reactor.callLater(0, wait)
 395
 396         def gotMSNAlert(self, body, action, subscr):
 397                 LogEvent(INFO, self.factory.msncon.ident)
 398                 self.factory.msncon.gotMSNAlert(body, action, subscr)
 399
 400         def gotInitialEmailNotification(self, inboxunread, foldersunread):
 401                 LogEvent(INFO, self.factory.msncon.ident)
 402                 self.factory.msncon.gotInitialEmailNotification(inboxunread, foldersunread)
 403
 404         def gotRealtimeEmailNotification(self, mailfrom, fromaddr, subject):
 405                 LogEvent(INFO, self.factory.msncon.ident)
 406                 self.factory.msncon.gotRealtimeEmailNotification(mailfrom, fromaddr, subject)
 407
 408         def userAddedMe(self, userGuid, userHandle, screenName):
 409                 LogEvent(INFO, self.factory.msncon.ident)
 410                 self.factory.msncon.contactAddedMe(userHandle)
 411
 412         def userRemovedMe(self, userHandle):
 413                 LogEvent(INFO, self.factory.msncon.ident)
 414                 self.factory.msncon.contactRemovedMe(userHandle)
 415
 416         def listSynchronized(self, *args):
 417                 LogEvent(INFO, self.factory.msncon.ident)
 418                 self.factory.msncon._sendSavedEvents()
 419                 self.factory.msncon.listSynchronized()
 420
 421         def contactAvatarChanged(self, userHandle, hash):
 422                 LogEvent(INFO, self.factory.msncon.ident)
 423                 self.factory.msncon.contactAvatarChanged(userHandle, hash)
 424
 425         def gotContactStatus(self, userHandle, statusCode, screenName):
 426                 LogEvent(INFO, self.factory.msncon.ident)
 427                 self.factory.msncon.contactStatusChanged(userHandle)
 428
 429         def contactStatusChanged(self, userHandle, statusCode, screenName):
 430                 LogEvent(INFO, self.factory.msncon.ident)
 431                 self.factory.msncon.contactStatusChanged(userHandle)
 432
 433         def contactPersonalChanged(self, userHandle, personal):
 434                 LogEvent(INFO, self.factory.msncon.ident)
 435                 self.factory.msncon.contactStatusChanged(userHandle)
 436
 437         def contactOffline(self, userHandle):
 438                 LogEvent(INFO, self.factory.msncon.ident)
 439                 self.factory.msncon.contactStatusChanged(userHandle)
 440
 441         def gotSwitchboardInvitation(self, sessionID, host, port, key, userHandle, screenName):
 442                 LogEvent(INFO, self.factory.msncon.ident)
 443                 sb = self.factory.msncon.switchboardSessions.get(userHandle)
 444                 if sb and sb.transport:
 445                         sb.transport.loseConnection()
 446                 else:
 447                         sb = OneSwitchboardSession(self.factory.msncon, userHandle)
 448                         self.factory.msncon.switchboardSessions[userHandle] = sb
 449                 sb.connectReply(host, port, key, sessionID)
 450
 451         def multipleLogin(self):
 452                 LogEvent(INFO, self.factory.msncon.ident)
 453                 self.factory.msncon.multipleLogin()
 454
 455         def serverGoingDown(self):
 456                 LogEvent(INFO, self.factory.msncon.ident)
 457                 self.factory.msncon.serverGoingDown()
 458
 459
 460
 461 class SwitchboardSessionBase(msn.SwitchboardClient):
 462         def __init__(self, msncon):
 463                 msn.SwitchboardClient.__init__(self)
 464                 self.msncon = msncon
 465                 self.msnobj = msncon.notificationClient.msnobj
 466                 self.userHandle = msncon.username
 467                 self.ident = (msncon.ident, "INVALID!!")
 468                 self.messageBuffer = []
 469                 self.funcBuffer = []
 470                 self.ready = False
 471
 472         def __del__(self):
 473                 self.ready = False
 474                 LogEvent(INFO, self.ident)
 475                 del self.msncon
 476                 self.transport.disconnect()
 477
 478         def connectionLost(self, reason):
 479                 self.ready = False
 480                 self.msncon = None
 481                 self.msnobj = None
 482                 self.ident = (self.ident[0], self.ident[1], "Disconnected!")
 483
 484         def loggedIn(self):
 485                 LogEvent(INFO, self.ident)
 486                 self.ready = True
 487                 self.flushBuffer()
 488
 489         def connect(self):
 490                 LogEvent(INFO, self.ident)
 491                 self.ready = False
 492                 def sbRequestAccepted((host, port, key)):
 493                         LogEvent(INFO, self.ident)
 494                         self.key = key
 495                         self.reply = 0
 496                         factory = ClientFactory()
 497                         factory.buildProtocol = lambda addr: self
 498                         reactor.connectTCP(host, port, factory)
 499                 def sbRequestFailed(ignored=None):
 500                         LogEvent(INFO, self.ident)
 501                         del self.msncon.switchboardSessions[self.remoteUser]
 502                 d = self.msncon.notificationClient.requestSwitchboardServer()
 503                 d.addCallbacks(sbRequestAccepted, sbRequestFailed)
 504
 505         def connectReply(self, host, port, key, sessionID):
 506                 LogEvent(INFO, self.ident)
 507                 self.ready = False
 508                 self.key = key
 509                 self.sessionID = sessionID
 510                 self.reply = 1
 511                 factory = ClientFactory()
 512                 factory.buildProtocol = lambda addr: self
 513                 reactor.connectTCP(host, port, factory)
 514
 515         def flushBuffer(self):
 516                 for message, noerror in self.messageBuffer[:]:
 517                         self.messageBuffer.remove((message, noerror))
 518                         self.sendMessage(message, noerror)
 519                 for f in self.funcBuffer[:]:
 520                         self.funcBuffer.remove(f)
 521                         f()
 522
 523         def failedMessage(self, *ignored):
 524                 raise NotImplementedError
 525
 526         def sendClientCaps(self):
 527                 message = msn.MSNMessage()
 528                 message.setHeader("Content-Type", "text/x-clientcaps")
 529                 message.setHeader("Client-Name", "PyMSNt")
 530                 if hasattr(self.msncon, "jabberID"):
 531                         message.setHeader("JabberID", str(self.msncon.jabberID))
 532                 self.sendMessage(message)
 533
 534         def sendMessage(self, message, noerror=False):
 535                 # Check to make sure that clientcaps only gets sent after
 536                 # the first text type message.
 537                 if isinstance(message, msn.MSNMessage) and message.getHeader("Content-Type").startswith("text"):
 538                         self.sendMessage = self.sendMessageReal
 539                         self.sendClientCaps()
 540                         return self.sendMessage(message, noerror)
 541                 else:
 542                         return self.sendMessageReal(message, noerror)
 543
 544         def sendMessageReal(self, text, noerror=False):
 545                 if not isinstance(text, basestring):
 546                         msn.SwitchboardClient.sendMessage(self, text)
 547                         return
 548                 if not self.ready:
 549                         self.messageBuffer.append((text, noerror))
 550                 else:
 551                         LogEvent(INFO, self.ident)
 552                         text = str(text.replace("\n", "\r\n").encode("utf-8"))
 553                         def failedMessage(ignored):
 554                                 if not noerror:
 555                                         self.failedMessage(text)
 556
 557                         if len(text) < MSNConnection.MAXMESSAGESIZE:
 558                                 message = msn.MSNMessage(message=text)
 559                                 message.ack = msn.MSNMessage.MESSAGE_NACK
 560
 561                                 d = msn.SwitchboardClient.sendMessage(self, message)
 562                                 if not noerror:
 563                                         d.addCallback(failedMessage)
 564
 565                         else:
 566                                 chunks = int(math.ceil(len(text) / float(MSNConnection.MAXMESSAGESIZE)))
 567                                 chunk = 0
 568                                 guid = msn.random_guid()
 569                                 while chunk < chunks:
 570                                         offset = chunk * MSNConnection.MAXMESSAGESIZE
 571                                         message = msn.MSNMessage(message=text[offset : offset + MSNConnection.MAXMESSAGESIZE])
 572                                         message.ack = msn.MSNMessage.MESSAGE_NACK
 573                                         message.setHeader("Message-ID", guid)
 574                                         if chunk == 0:
 575                                                 message.setHeader("Chunks", str(chunks))
 576                                         else:
 577                                                 message.delHeader("MIME-Version")
 578                                                 message.delHeader("Content-Type")
 579                                                 message.setHeader("Chunk", str(chunk))
 580
 581                                         d = msn.SwitchboardClient.sendMessage(self, message)
 582                                         if not noerror:
 583                                                 d.addCallback(failedMessage)
 584
 585                                         chunk += 1
 586
 587
 588 class MultiSwitchboardSession(SwitchboardSessionBase):
 589         """ Create one of me to chat to multiple contacts """
 590
 591         def __init__(self, msncon):
 592                 """ Automatically creates a new switchboard connection to the server """
 593                 SwitchboardSessionBase.__init__(self, msncon)
 594                 self.ident = (self.msncon.ident, self)
 595                 self.contactCount = 0
 596                 self.groupchat = None
 597                 self.connect()
 598
 599         def failedMessage(self, text):
 600                 self.groupchat.gotMessage("BOUNCE", text)
 601
 602         def sendMessage(self, text, noerror=False):
 603                 """ Used to send a mesage to the groupchat. Can be called immediately
 604                 after instantiation. """
 605                 if self.contactCount > 0:
 606                         SwitchboardSessionBase.sendMessage(self, text, noerror)
 607                 else:
 608                         #self.messageBuffer.append((message, noerror))
 609                         pass # They're sending messages to an empty room. Ignore.
 610
 611         def inviteUser(self, userHandle):
 612                 """ Used to invite a contact to the groupchat. Can be called immediately
 613                 after instantiation. """
 614                 userHandle = str(userHandle)
 615                 if self.ready:
 616                         LogEvent(INFO, self.ident, "immediate")
 617                         msn.SwitchboardClient.inviteUser(self, userHandle)
 618                 else:
 619                         LogEvent(INFO, self.ident, "pending")
 620                         self.funcBuffer.append(lambda: msn.SwitchboardClient.inviteUser(self, userHandle))
 621
 622         def gotMessage(self, message):
 623                 self.groupchat.gotMessage(message.userHandle, message.getMessage())
 624
 625         def userJoined(self, userHandle, screenName=''):
 626                 LogEvent(INFO, self.ident)
 627                 self.contactCount += 1
 628                 self.groupchat.contactJoined(userHandle)
 629
 630         def userLeft(self, userHandle):
 631                 LogEvent(INFO, self.ident)
 632                 self.contactCount -= 1
 633                 self.groupchat.contactLeft(userHandle)
 634
 635
 636
 637 class OneSwitchboardSession(SwitchboardSessionBase):
 638         def __init__(self, msncon, remoteUser):
 639                 SwitchboardSessionBase.__init__(self, msncon)
 640                 self.remoteUser = str(remoteUser)
 641                 self.ident = (self.msncon.ident, self.remoteUser)
 642                 self.chattingUsers = []
 643                 self.timeout = None
 644
 645         def __del__(self):
 646                 if self.timeout:
 647                         self.timeout.cancel()
 648                 self.timeout = None
 649                 for message, noerror in self.messageBuffer:
 650                         if not noerror:
 651                                 self.failedMessage(message)
 652
 653         def _ready(self):
 654                 LogEvent(INFO, self.ident)
 655                 self.ready = True
 656                 for user in self.chattingUsers:
 657                         self.userJoined(user)
 658                 if self.timeout:
 659                         self.timeout.cancel()
 660                 self.timeout = None
 661                 self.flushBuffer()
 662
 663         def _switchToMulti(self, userHandle):
 664                 LogEvent(INFO, self.ident)
 665                 del self.msncon.switchboardSessions[self.remoteUser]
 666                 self.__class__ = MultiSwitchboardSession
 667                 del self.remoteUser
 668                 self.contactCount = 0
 669                 self.msncon.gotGroupchat(self, userHandle)
 670                 assert self.groupchat
 671
 672         def failedMessage(self, text):
 673                 self.msncon.failedMessage(self.remoteUser, text)
 674
 675         # Callbacks
 676         def loggedIn(self):
 677                 LogEvent(INFO, self.ident)
 678                 if not self.reply:
 679                         def failCB(arg=None):
 680                                 if not (self.msncon and self.msncon.switchboardSessions.has_key(self.remoteUser)):
 681                                         return
 682                                 LogEvent(INFO, self.ident, "User has not joined after 30 seconds.")
 683                                 del self.msncon.switchboardSessions[self.remoteUser]
 684                                 self.timeout = None
 685                         d = self.inviteUser(self.remoteUser)
 686                         d.addErrback(failCB)
 687                         self.timeout = reactor.callLater(30.0, failCB)
 688                 else:
 689                         self._ready()
 690
 691         def gotChattingUsers(self, users):
 692                 for userHandle in users.keys():
 693                         self.chattingUsers.append(userHandle)
 694
 695         def userJoined(self, userHandle, screenName=''):
 696                 LogEvent(INFO, self.ident)
 697                 if not self.reply:
 698                         self._ready()
 699                 if userHandle != self.remoteUser:
 700                         # Another user has joined, so we now have three participants.
 701                         remoteUser = self.remoteUser
 702                         self._switchToMulti(remoteUser)
 703                         self.userJoined(remoteUser)
 704                         self.userJoined(userHandle)
 705                 else:
 706                         def updateAvatarCB((imageData, )):
 707                                 if self.msncon:
 708                                         self.msncon.gotAvatarImageData(self.remoteUser, imageData)
 709                         d = self.sendAvatarRequest()
 710                         if d:
 711                                 d.addCallback(updateAvatarCB)
 712
 713         def userLeft(self, userHandle):
 714                 def wait():
 715                         if userHandle == self.remoteUser:
 716                                 if self.msncon and self.msncon.switchboardSessions.has_key(self.remoteUser):
 717                                         del self.msncon.switchboardSessions[self.remoteUser]
 718                 reactor.callLater(0, wait) # Make sure this is handled after everything else
 719
 720         def gotMessage(self, message):
 721                 LogEvent(INFO, self.ident)
 722                 cTypes = [s.strip() for s in message.getHeader("Content-Type").split(';')]
 723                 if "text/plain" == cTypes[0]:
 724                         try:
 725                                 if len(cTypes) > 1 and cTypes[1].lower().find("utf-8") >= 0:
 726                                         text = message.getMessage().decode("utf-8")
 727                                 else:
 728                                         text = message.getMessage()
 729                                 self.msncon.gotMessage(self.remoteUser, text)
 730                         except:
 731                                 self.msncon.gotMessage(self.remoteUser, "A message was lost.")
 732                                 raise
 733                 elif "text/x-clientcaps" == cTypes[0]:
 734                         if message.hasHeader("JabberID"):
 735                                 jid = message.getHeader("JabberID")
 736                                 self.msncon.userMapping(message.userHandle, jid)
 737                 else:
 738                         LogEvent(INFO, self.ident, "Discarding unknown message type.")
 739
 740         def gotFileReceive(self, fileReceive):
 741                 LogEvent(INFO, self.ident)
 742                 self.msncon.gotFileReceive(fileReceive)
 743
 744         def gotContactTyping(self, message):
 745                 LogEvent(INFO, self.ident)
 746                 self.msncon.gotContactTyping(message.userHandle)
 747
 748         def sendTypingNotification(self):
 749                 LogEvent(INFO, self.ident)
 750                 if self.ready:
 751                         msn.SwitchboardClient.sendTypingNotification(self)
 752
 753         CAPS = msn.MSNContact.MSNC1 | msn.MSNContact.MSNC2 | msn.MSNContact.MSNC3 | msn.MSNContact.MSNC4
 754         def sendAvatarRequest(self):
 755                 if not self.ready: return
 756                 msnContacts = self.msncon.getContacts()
 757                 if not msnContacts: return
 758                 msnContact = msnContacts.getContact(self.remoteUser)
 759                 if not (msnContact and msnContact.caps & self.CAPS and msnContact.msnobj): return
 760                 if msnContact.msnobjGot: return
 761                 msnContact.msnobjGot = True # This is deliberately set before we get the avatar. So that we don't try to reget failed avatars over & over
 762                 return msn.SwitchboardClient.sendAvatarRequest(self, msnContact)
 763
 764         def sendFile(self, msnContact, filename, filesize):
 765                 def doSendFile(ignored=None):
 766                         d.callback(msn.SwitchboardClient.sendFile(self, msnContact, filename, filesize))
 767                 d = Deferred()
 768                 if self.ready:
 769                         reactor.callLater(0, doSendFile)
 770                 else:
 771                         self.funcBuffer.append(doSendFile)
 772                 return d
 773