libempathy/empathy-dispatcher.c

   1 /* * Copyright (C) 2007-2008 Collabora Ltd.
   2  *
   3  * This library is free software; you can redistribute it and/or
   4  * modify it under the terms of the GNU Lesser General Public
   5  * License as published by the Free Software Foundation; either
   6  * version 2.1 of the License, or (at your option) any later version.
   7  *
   8  * This library is distributed in the hope that it will be useful,
   9  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  10  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  11  * Lesser General Public License for more details.
  12  *
  13  * You should have received a copy of the GNU Lesser General Public
  14  * License along with this library; if not, write to the Free Software
  15  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
  16  *
  17  * Authors: Xavier Claessens <xclaesse@gmail.com>
  18  */
  19
  20 #include <config.h>
  21
  22 #include <string.h>
  23
  24 #include <glib/gi18n-lib.h>
  25
  26 #include <telepathy-glib/enums.h>
  27 #include <telepathy-glib/connection.h>
  28 #include <telepathy-glib/util.h>
  29 #include <telepathy-glib/dbus.h>
  30 #include <telepathy-glib/proxy-subclass.h>
  31 #include <telepathy-glib/gtypes.h>
  32
  33 #include <libmissioncontrol/mission-control.h>
  34
  35 #include <extensions/extensions.h>
  36
  37 #include "empathy-dispatcher.h"
  38 #include "empathy-utils.h"
  39 #include "empathy-tube-handler.h"
  40 #include "empathy-account-manager.h"
  41 #include "empathy-tp-contact-factory.h"
  42 #include "empathy-tp-file.h"
  43 #include "empathy-chatroom-manager.h"
  44 #include "empathy-utils.h"
  45
  46 #define DEBUG_FLAG EMPATHY_DEBUG_DISPATCHER
  47 #include <libempathy/empathy-debug.h>
  48
  49 #define GET_PRIV(obj) EMPATHY_GET_PRIV (obj, EmpathyDispatcher)
  50 typedef struct
  51 {
  52   EmpathyAccountManager *account_manager;
  53   MissionControl *mc;
  54   /* connection to connection data mapping */
  55   GHashTable *connections;
  56   gpointer token;
  57   GSList *tubes;
  58
  59   /* channels which the dispatcher is listening "invalidated" */
  60   GList *channels;
  61 } EmpathyDispatcherPriv;
  62
  63 G_DEFINE_TYPE (EmpathyDispatcher, empathy_dispatcher, G_TYPE_OBJECT);
  64
  65 enum
  66 {
  67   OBSERVE,
  68   APPROVE,
  69   DISPATCH,
  70   LAST_SIGNAL
  71 };
  72
  73 static guint signals[LAST_SIGNAL];
  74 static EmpathyDispatcher *dispatcher = NULL;
  75
  76 typedef struct
  77 {
  78   EmpathyDispatcher *dispatcher;
  79   EmpathyDispatchOperation *operation;
  80   TpConnection *connection;
  81   gchar *channel_type;
  82   guint handle_type;
  83   guint handle;
  84   EmpathyContact *contact;
  85
  86   /* Properties to pass to the channel when requesting it */
  87   GHashTable *request;
  88   EmpathyDispatcherRequestCb *cb;
  89   gpointer user_data;
  90   gpointer *request_data;
  91 } DispatcherRequestData;
  92
  93 typedef struct
  94 {
  95   TpChannel *channel;
  96   /* Channel type specific wrapper object */
  97   GObject *channel_wrapper;
  98 } DispatchData;
  99
 100 typedef struct
 101 {
 102   /* ObjectPath => DispatchData.. */
 103   GHashTable *dispatched_channels;
 104   /* ObjectPath -> EmpathyDispatchOperations */
 105   GHashTable *dispatching_channels;
 106   /* ObjectPath -> EmpathyDispatchOperations */
 107   GHashTable *outstanding_channels;
 108   /* List of DispatcherRequestData */
 109   GList *outstanding_requests;
 110   /* List of requestable channel classes */
 111   GPtrArray *requestable_channels;
 112 } ConnectionData;
 113
 114 static DispatchData *
 115 new_dispatch_data (TpChannel *channel,
 116                    GObject *channel_wrapper)
 117 {
 118   DispatchData *d = g_slice_new0 (DispatchData);
 119   d->channel = g_object_ref (channel);
 120   if (channel_wrapper != NULL)
 121     d->channel_wrapper = g_object_ref (channel_wrapper);
 122
 123   return d;
 124 }
 125
 126 static void
 127 free_dispatch_data (DispatchData *data)
 128 {
 129   g_object_unref (data->channel);
 130   if (data->channel_wrapper != NULL)
 131     g_object_unref (data->channel_wrapper);
 132
 133   g_slice_free (DispatchData, data);
 134 }
 135
 136 static DispatcherRequestData *
 137 new_dispatcher_request_data (EmpathyDispatcher *dispatcher,
 138                              TpConnection *connection,
 139                              const gchar *channel_type,
 140                              guint handle_type,
 141                              guint handle,
 142                              GHashTable *request,
 143                              EmpathyContact *contact,
 144                              EmpathyDispatcherRequestCb *cb,
 145                              gpointer user_data)
 146 {
 147   DispatcherRequestData *result = g_slice_new0 (DispatcherRequestData);
 148
 149   result->dispatcher = g_object_ref (dispatcher);
 150   result->connection = connection;
 151
 152   result->channel_type = g_strdup (channel_type);
 153   result->handle_type = handle_type;
 154   result->handle = handle;
 155   result->request = request;
 156
 157   if (contact != NULL)
 158     result->contact = g_object_ref (contact);
 159
 160   result->cb = cb;
 161   result->user_data = user_data;
 162
 163   return result;
 164 }
 165
 166 static void
 167 free_dispatcher_request_data (DispatcherRequestData *r)
 168 {
 169   g_free (r->channel_type);
 170
 171   if (r->dispatcher != NULL)
 172     g_object_unref (r->dispatcher);
 173
 174   if (r->contact != NULL)
 175     g_object_unref (r->contact);
 176
 177   if (r->request != NULL)
 178     g_hash_table_unref (r->request);
 179
 180   g_slice_free (DispatcherRequestData, r);
 181 }
 182
 183 static ConnectionData *
 184 new_connection_data (void)
 185 {
 186   ConnectionData *cd = g_slice_new0 (ConnectionData);
 187
 188   cd->dispatched_channels = g_hash_table_new_full (g_str_hash, g_str_equal,
 189       g_free, (GDestroyNotify) free_dispatch_data);
 190
 191   cd->dispatching_channels = g_hash_table_new_full (g_str_hash, g_str_equal,
 192       g_free, g_object_unref);
 193
 194   cd->outstanding_channels = g_hash_table_new_full (g_str_hash, g_str_equal,
 195       g_free, NULL);
 196
 197   return cd;
 198 }
 199
 200 static void
 201 free_connection_data (ConnectionData *cd)
 202 {
 203   GList *l;
 204
 205   g_hash_table_destroy (cd->dispatched_channels);
 206   g_hash_table_destroy (cd->dispatching_channels);
 207   int i;
 208
 209   for (l = cd->outstanding_requests ; l != NULL; l = g_list_delete_link (l,l))
 210     {
 211       free_dispatcher_request_data (l->data);
 212     }
 213
 214   if (cd->requestable_channels  != NULL)
 215     {
 216       for (i = 0 ; i < cd->requestable_channels->len ; i++)
 217           g_value_array_free (
 218             g_ptr_array_index (cd->requestable_channels, i));
 219       g_ptr_array_free (cd->requestable_channels, TRUE);
 220     }
 221 }
 222
 223 static void
 224 dispatcher_connection_invalidated_cb (TpConnection *connection,
 225                                       guint domain,
 226                                       gint code,
 227                                       gchar *message,
 228                                       EmpathyDispatcher *dispatcher)
 229 {
 230   EmpathyDispatcherPriv *priv = GET_PRIV (dispatcher);
 231
 232   DEBUG ("Error: %s", message);
 233   g_hash_table_remove (priv->connections, connection);
 234 }
 235
 236 static gboolean
 237 dispatcher_operation_can_start (EmpathyDispatcher *self,
 238                                 EmpathyDispatchOperation *operation,
 239                                 ConnectionData *cd)
 240 {
 241   GList *l;
 242   const gchar *channel_type =
 243     empathy_dispatch_operation_get_channel_type (operation);
 244
 245   for (l = cd->outstanding_requests; l != NULL; l = g_list_next (l))
 246     {
 247       DispatcherRequestData *d = (DispatcherRequestData *) l->data;
 248
 249       if (d->operation == NULL && !tp_strdiff (d->channel_type, channel_type))
 250         {
 251           return FALSE;
 252         }
 253     }
 254
 255   return TRUE;
 256 }
 257
 258 static void
 259 dispatch_operation_flush_requests (EmpathyDispatcher *dispatcher,
 260                                    EmpathyDispatchOperation *operation,
 261                                    GError *error,
 262                                    ConnectionData *cd)
 263 {
 264   GList *l;
 265
 266   l = cd->outstanding_requests;
 267   while (l != NULL)
 268     {
 269       DispatcherRequestData *d = (DispatcherRequestData *) l->data;
 270       GList *lt = l;
 271
 272       l = g_list_next (l);
 273
 274       if (d->operation == operation)
 275         {
 276           if (d->cb != NULL)
 277             {
 278               if (error != NULL)
 279                 d->cb (NULL, error, d->user_data);
 280               else
 281                 d->cb (operation, NULL, d->user_data);
 282             }
 283
 284           cd->outstanding_requests = g_list_delete_link
 285             (cd->outstanding_requests, lt);
 286
 287           free_dispatcher_request_data (d);
 288         }
 289     }
 290 }
 291
 292 static void
 293 dispatcher_channel_invalidated_cb (TpProxy *proxy,
 294                                    guint domain,
 295                                    gint code,
 296                                    gchar *message,
 297                                    EmpathyDispatcher *dispatcher)
 298 {
 299   /* Channel went away... */
 300   EmpathyDispatcherPriv *priv = GET_PRIV (dispatcher);
 301   TpConnection *connection;
 302   EmpathyDispatchOperation *operation;
 303   ConnectionData *cd;
 304   const gchar *object_path;
 305
 306   connection = tp_channel_borrow_connection (TP_CHANNEL (proxy));
 307
 308   cd = g_hash_table_lookup (priv->connections, connection);
 309   /* Connection itself invalidated? */
 310   if (cd == NULL)
 311     return;
 312
 313   object_path = tp_proxy_get_object_path (proxy);
 314
 315   DEBUG ("Channel %s invalidated", object_path);
 316
 317   g_hash_table_remove (cd->dispatched_channels, object_path);
 318   g_hash_table_remove (cd->dispatching_channels, object_path);
 319
 320   priv->channels = g_list_remove (priv->channels, proxy);
 321
 322   operation = g_hash_table_lookup (cd->outstanding_channels, object_path);
 323   if (operation != NULL)
 324     {
 325       GError error = { domain, code, message };
 326       dispatch_operation_flush_requests (dispatcher, operation, &error, cd);
 327       g_hash_table_remove (cd->outstanding_channels, object_path);
 328       g_object_unref (operation);
 329     }
 330 }
 331
 332 static void
 333 dispatch_operation_approved_cb (EmpathyDispatchOperation *operation,
 334                                 EmpathyDispatcher *dispatcher)
 335 {
 336   g_assert (empathy_dispatch_operation_is_incoming (operation));
 337   DEBUG ("Send of for dispatching: %s",
 338     empathy_dispatch_operation_get_object_path (operation));
 339   g_signal_emit (dispatcher, signals[DISPATCH], 0, operation);
 340 }
 341
 342 static void
 343 dispatch_operation_claimed_cb (EmpathyDispatchOperation *operation,
 344                                EmpathyDispatcher *dispatcher)
 345 {
 346   /* Our job is done, remove the dispatch operation and mark the channel as
 347    * dispatched */
 348   EmpathyDispatcherPriv *priv = GET_PRIV (dispatcher);
 349   TpConnection *connection;
 350   ConnectionData *cd;
 351   const gchar *object_path;
 352
 353   connection = empathy_dispatch_operation_get_tp_connection (operation);
 354   cd = g_hash_table_lookup (priv->connections, connection);
 355   g_assert (cd != NULL);
 356
 357   object_path = empathy_dispatch_operation_get_object_path (operation);
 358
 359   if (g_hash_table_lookup (cd->dispatched_channels, object_path) == NULL)
 360     {
 361       DispatchData *d;
 362       d = new_dispatch_data (
 363         empathy_dispatch_operation_get_channel (operation),
 364         empathy_dispatch_operation_get_channel_wrapper (operation));
 365       g_hash_table_insert (cd->dispatched_channels,
 366         g_strdup (object_path), d);
 367     }
 368   g_hash_table_remove (cd->dispatching_channels, object_path);
 369
 370   DEBUG ("Channel claimed: %s", object_path);
 371 }
 372
 373 static void
 374 dispatch_operation_ready_cb (EmpathyDispatchOperation *operation,
 375                              EmpathyDispatcher *dispatcher)
 376 {
 377   EmpathyDispatcherPriv *priv = GET_PRIV (dispatcher);
 378   TpConnection *connection;
 379   ConnectionData *cd;
 380   EmpathyDispatchOperationState status;
 381
 382   g_signal_connect (operation, "approved",
 383     G_CALLBACK (dispatch_operation_approved_cb), dispatcher);
 384
 385   g_signal_connect (operation, "claimed",
 386     G_CALLBACK (dispatch_operation_claimed_cb), dispatcher);
 387
 388   /* Signal the observers */
 389   DEBUG ("Send to observers: %s",
 390     empathy_dispatch_operation_get_object_path (operation));
 391   g_signal_emit (dispatcher, signals[OBSERVE], 0, operation);
 392
 393   empathy_dispatch_operation_start (operation);
 394
 395   /* Signal potential requestors */
 396   connection =  empathy_dispatch_operation_get_tp_connection (operation);
 397   cd = g_hash_table_lookup (priv->connections, connection);
 398   g_assert (cd != NULL);
 399
 400   g_object_ref (operation);
 401   g_object_ref (dispatcher);
 402
 403   dispatch_operation_flush_requests (dispatcher, operation, NULL, cd);
 404   status = empathy_dispatch_operation_get_status (operation);
 405   g_object_unref (operation);
 406
 407   if (status == EMPATHY_DISPATCHER_OPERATION_STATE_CLAIMED)
 408     return;
 409
 410   if (status == EMPATHY_DISPATCHER_OPERATION_STATE_APPROVING)
 411     {
 412       DEBUG ("Send to approvers: %s",
 413         empathy_dispatch_operation_get_object_path (operation));
 414       g_signal_emit (dispatcher, signals[APPROVE], 0, operation);
 415     }
 416   else
 417     {
 418       g_assert (status == EMPATHY_DISPATCHER_OPERATION_STATE_DISPATCHING);
 419       DEBUG ("Send of for dispatching: %s",
 420         empathy_dispatch_operation_get_object_path (operation));
 421       g_signal_emit (dispatcher, signals[DISPATCH], 0, operation);
 422     }
 423
 424   g_object_unref (dispatcher);
 425 }
 426
 427 static void
 428 dispatcher_start_dispatching (EmpathyDispatcher *self,
 429                               EmpathyDispatchOperation *operation,
 430                               ConnectionData *cd)
 431 {
 432   const gchar *object_path =
 433     empathy_dispatch_operation_get_object_path (operation);
 434
 435   DEBUG ("Dispatching process started for %s", object_path);
 436
 437   if (g_hash_table_lookup (cd->dispatching_channels, object_path) == NULL)
 438     {
 439       g_assert (g_hash_table_lookup (cd->outstanding_channels,
 440         object_path) == NULL);
 441
 442       g_hash_table_insert (cd->dispatching_channels,
 443         g_strdup (object_path), operation);
 444
 445       switch (empathy_dispatch_operation_get_status (operation))
 446         {
 447           case EMPATHY_DISPATCHER_OPERATION_STATE_PREPARING:
 448             g_signal_connect (operation, "ready",
 449               G_CALLBACK (dispatch_operation_ready_cb), dispatcher);
 450             break;
 451           case EMPATHY_DISPATCHER_OPERATION_STATE_PENDING:
 452             dispatch_operation_ready_cb (operation, dispatcher);
 453             break;
 454           default:
 455             g_assert_not_reached();
 456         }
 457
 458     }
 459   else if (empathy_dispatch_operation_get_status (operation) >=
 460       EMPATHY_DISPATCHER_OPERATION_STATE_PENDING)
 461     {
 462       /* Already dispatching and the operation is pending, thus the observers
 463        * have seen it (if applicable), so we can flush the request right away.
 464        */
 465       dispatch_operation_flush_requests (self, operation, NULL, cd);
 466     }
 467 }
 468
 469 static void
 470 dispatcher_flush_outstanding_operations (EmpathyDispatcher *self,
 471                                          ConnectionData *cd)
 472 {
 473   GHashTableIter iter;
 474   gpointer value;
 475
 476   g_hash_table_iter_init (&iter, cd->outstanding_channels);
 477   while (g_hash_table_iter_next (&iter, NULL, &value))
 478     {
 479       EmpathyDispatchOperation *operation = EMPATHY_DISPATCH_OPERATION (value);
 480
 481       if (dispatcher_operation_can_start (self, operation, cd))
 482         {
 483           dispatcher_start_dispatching (dispatcher, operation, cd);
 484           g_hash_table_iter_remove (&iter);
 485         }
 486     }
 487 }
 488
 489 static void
 490 dispatcher_connection_new_channel (EmpathyDispatcher *dispatcher,
 491                                    TpConnection *connection,
 492                                    const gchar *object_path,
 493                                    const gchar *channel_type,
 494                                    guint handle_type,
 495                                    guint handle,
 496                                    GHashTable *properties,
 497                                    gboolean incoming)
 498 {
 499   EmpathyDispatcherPriv *priv = GET_PRIV (dispatcher);
 500   TpChannel         *channel;
 501   ConnectionData *cd;
 502   EmpathyDispatchOperation *operation;
 503   int i;
 504   /* Channel types we never want to dispatch because they're either deprecated
 505    * or can't sensibly be dispatch (e.g. channels that should always be
 506    * requested) */
 507   const char *blacklist[] = {
 508     TP_IFACE_CHANNEL_TYPE_CONTACT_LIST,
 509     TP_IFACE_CHANNEL_TYPE_TUBES,
 510     TP_IFACE_CHANNEL_TYPE_ROOM_LIST,
 511     NULL
 512   };
 513
 514   cd = g_hash_table_lookup (priv->connections, connection);
 515
 516   /* Don't bother with channels we have already dispatched or are dispatching
 517    * currently. This can happen when NewChannel(s) is fired after
 518    * RequestChannel/CreateChannel/EnsureChannel */
 519   if (g_hash_table_lookup (cd->dispatched_channels, object_path) != NULL)
 520     return;
 521
 522   if (g_hash_table_lookup (cd->dispatching_channels, object_path) != NULL)
 523     return;
 524
 525   /* Should never occur, but just in case a CM fires spurious NewChannel(s)
 526    * signals */
 527   if (g_hash_table_lookup (cd->outstanding_channels, object_path) != NULL)
 528     return;
 529
 530   /* Only pick up non-requested text and file channels. For all other it
 531    * doesn't make sense to handle it if we didn't request it. The same goes
 532    * for channels we discovered by the Channels property or ListChannels */
 533   if (!incoming && tp_strdiff (channel_type, TP_IFACE_CHANNEL_TYPE_TEXT)
 534         && tp_strdiff (channel_type, TP_IFACE_CHANNEL_TYPE_FILE_TRANSFER))
 535     {
 536       DEBUG ("Ignoring incoming channel of type %s on %s",
 537         channel_type, object_path);
 538       return;
 539     }
 540
 541   for (i = 0 ; blacklist[i] != NULL; i++)
 542     {
 543       if (!tp_strdiff (channel_type, blacklist[i]))
 544         {
 545           DEBUG ("Ignoring blacklisted channel type %s on %s",
 546             channel_type, object_path);
 547           return;
 548         }
 549     }
 550
 551   DEBUG ("New channel of type %s on %s", channel_type, object_path);
 552
 553   if (properties == NULL)
 554     channel = tp_channel_new (connection, object_path, channel_type,
 555       handle_type, handle, NULL);
 556   else
 557     channel = tp_channel_new_from_properties (connection, object_path,
 558       properties, NULL);
 559
 560   g_signal_connect (channel, "invalidated",
 561     G_CALLBACK (dispatcher_channel_invalidated_cb),
 562     dispatcher);
 563
 564   priv->channels = g_list_prepend (priv->channels, channel);
 565
 566   operation = empathy_dispatch_operation_new (connection, channel, NULL,
 567     incoming);
 568
 569   g_object_unref (channel);
 570
 571   if (incoming)
 572     {
 573       /* Request could either be by us or by a remote party. If there are no
 574        * outstanding requests for this channel type we can assume it's remote.
 575        * Otherwise we wait untill they are all satisfied */
 576       if (dispatcher_operation_can_start (dispatcher, operation, cd))
 577         dispatcher_start_dispatching (dispatcher, operation, cd);
 578       else
 579         g_hash_table_insert (cd->outstanding_channels,
 580           g_strdup (object_path), operation);
 581     }
 582   else
 583     {
 584       dispatcher_start_dispatching (dispatcher, operation, cd);
 585     }
 586 }
 587
 588 static void
 589 dispatcher_connection_new_channel_cb (TpConnection *connection,
 590                                       const gchar *object_path,
 591                                       const gchar  *channel_type,
 592                                       guint handle_type,
 593                                       guint handle,
 594                                       gboolean suppress_handler,
 595                                       gpointer user_data,
 596                                       GObject *object)
 597 {
 598   EmpathyDispatcher *dispatcher = EMPATHY_DISPATCHER (object);
 599
 600   /* Empathy heavily abuses surpress handler (don't try this at home), if
 601    * surpress handler is true then it is an outgoing channel, which is
 602    * requested either by us or some other party (like the megaphone applet).
 603    * Otherwise it's an incoming channel */
 604   dispatcher_connection_new_channel (dispatcher, connection,
 605     object_path, channel_type, handle_type, handle, NULL, !suppress_handler);
 606 }
 607
 608 static void
 609 dispatcher_connection_new_channel_with_properties (EmpathyDispatcher *dispatcher,
 610                                                    TpConnection *connection,
 611                                                    const gchar *object_path,
 612                                                    GHashTable *properties)
 613 {
 614   const gchar *channel_type;
 615   guint handle_type;
 616   guint handle;
 617   gboolean requested;
 618   gboolean valid;
 619
 620
 621   channel_type = tp_asv_get_string (properties,
 622     TP_IFACE_CHANNEL ".ChannelType");
 623   if (channel_type == NULL)
 624     {
 625       g_message ("%s had an invalid ChannelType property", object_path);
 626       return;
 627     }
 628
 629   handle_type = tp_asv_get_uint32 (properties,
 630     TP_IFACE_CHANNEL ".TargetHandleType", &valid);
 631   if (!valid)
 632     {
 633       g_message ("%s had an invalid TargetHandleType property", object_path);
 634       return;
 635     }
 636
 637   handle = tp_asv_get_uint32 (properties,
 638     TP_IFACE_CHANNEL ".TargetHandle", &valid);
 639   if (!valid)
 640     {
 641       g_message ("%s had an invalid TargetHandle property", object_path);
 642       return;
 643     }
 644
 645   /* We assume there is no channel dispather, so we're the only one dispatching
 646    * it. Which means that a requested channel it is outgoing one */
 647   requested = tp_asv_get_boolean (properties,
 648     TP_IFACE_CHANNEL ".Requested", &valid);
 649   if (!valid)
 650     {
 651       g_message ("%s had an invalid Requested property", object_path);
 652       return;
 653     }
 654
 655   dispatcher_connection_new_channel (dispatcher, connection,
 656     object_path, channel_type, handle_type, handle, properties, !requested);
 657 }
 658
 659 static void
 660 dispatcher_connection_new_channels_cb (TpConnection *connection,
 661                                        const GPtrArray *channels,
 662                                        gpointer user_data,
 663                                        GObject *object)
 664 {
 665   EmpathyDispatcher *dispatcher = EMPATHY_DISPATCHER (object);
 666   int i;
 667
 668   for (i = 0; i < channels->len ; i++)
 669     {
 670       GValueArray *arr = g_ptr_array_index (channels, i);
 671       const gchar *object_path;
 672       GHashTable *properties;
 673
 674       object_path = g_value_get_boxed (g_value_array_get_nth (arr, 0));
 675       properties = g_value_get_boxed (g_value_array_get_nth (arr, 1));
 676
 677       dispatcher_connection_new_channel_with_properties (dispatcher,
 678         connection, object_path, properties);
 679     }
 680 }
 681
 682 static void
 683 dispatcher_connection_got_all (TpProxy *proxy,
 684                                GHashTable *properties,
 685                                const GError *error,
 686                                gpointer user_data,
 687                                GObject *object)
 688 {
 689   EmpathyDispatcher *dispatcher = EMPATHY_DISPATCHER (object);
 690   EmpathyDispatcherPriv *priv = GET_PRIV (dispatcher);
 691   GPtrArray *channels;
 692   GPtrArray *requestable_channels;
 693
 694   if (error) {
 695     DEBUG ("Error: %s", error->message);
 696     return;
 697   }
 698
 699   channels = tp_asv_get_boxed (properties, "Channels",
 700     TP_ARRAY_TYPE_CHANNEL_DETAILS_LIST);
 701
 702   if (channels == NULL)
 703     DEBUG ("No Channels property !?! on connection");
 704   else
 705     dispatcher_connection_new_channels_cb (TP_CONNECTION (proxy),
 706       channels, NULL, object);
 707
 708   requestable_channels = tp_asv_get_boxed (properties,
 709     "RequestableChannelClasses", TP_ARRAY_TYPE_REQUESTABLE_CHANNEL_CLASS_LIST);
 710
 711   if (requestable_channels == NULL)
 712     DEBUG ("No RequestableChannelClasses property !?! on connection");
 713   else
 714     {
 715       ConnectionData *cd;
 716
 717       cd = g_hash_table_lookup (priv->connections, proxy);
 718       g_assert (cd != NULL);
 719
 720       cd->requestable_channels = g_boxed_copy (
 721         TP_ARRAY_TYPE_REQUESTABLE_CHANNEL_CLASS_LIST, requestable_channels);
 722     }
 723 }
 724
 725 static void
 726 dispatcher_connection_list_channels_cb (TpConnection    *connection,
 727                                         const GPtrArray *channels,
 728                                         const GError    *error,
 729                                         gpointer         user_data,
 730                                         GObject         *dispatcher)
 731 {
 732   int i;
 733
 734   if (error)
 735     {
 736       DEBUG ("Error: %s", error->message);
 737       return;
 738     }
 739
 740   for (i = 0; i < channels->len; i++)
 741     {
 742       GValueArray *values;
 743
 744       values = g_ptr_array_index (channels, i);
 745       /* We don't have any extra info, so assume already existing channels are
 746        * incoming... */
 747       dispatcher_connection_new_channel (EMPATHY_DISPATCHER (dispatcher),
 748         connection,
 749         g_value_get_boxed (g_value_array_get_nth (values, 0)),
 750         g_value_get_string (g_value_array_get_nth (values, 1)),
 751         g_value_get_uint (g_value_array_get_nth (values, 2)),
 752         g_value_get_uint (g_value_array_get_nth (values, 3)),
 753         NULL, TRUE);
 754     }
 755 }
 756
 757 static void
 758 dispatcher_connection_advertise_capabilities_cb (TpConnection    *connection,
 759                                                  const GPtrArray *capabilities,
 760                                                  const GError    *error,
 761                                                  gpointer         user_data,
 762                                                  GObject         *dispatcher)
 763 {
 764   if (error)
 765     DEBUG ("Error: %s", error->message);
 766 }
 767
 768 static void
 769 dispatcher_new_connection_cb (EmpathyAccountManager *manager,
 770                               TpConnection *connection,
 771                               EmpathyDispatcher *dispatcher)
 772 {
 773   EmpathyDispatcherPriv *priv = GET_PRIV (dispatcher);
 774   GPtrArray   *capabilities;
 775   GType        cap_type;
 776   GValue       cap = {0, };
 777   const gchar *remove = NULL;
 778
 779   if (g_hash_table_lookup (priv->connections, connection) != NULL)
 780     return;
 781
 782   g_hash_table_insert (priv->connections, g_object_ref (connection),
 783     new_connection_data ());
 784
 785   g_signal_connect (connection, "invalidated",
 786     G_CALLBACK (dispatcher_connection_invalidated_cb), dispatcher);
 787
 788   if (tp_proxy_has_interface_by_id (TP_PROXY (connection),
 789       TP_IFACE_QUARK_CONNECTION_INTERFACE_REQUESTS))
 790     {
 791       tp_cli_connection_interface_requests_connect_to_new_channels (connection,
 792         dispatcher_connection_new_channels_cb,
 793         NULL, NULL, G_OBJECT (dispatcher), NULL);
 794
 795       tp_cli_dbus_properties_call_get_all (connection, -1,
 796         TP_IFACE_CONNECTION_INTERFACE_REQUESTS,
 797         dispatcher_connection_got_all,
 798         NULL, NULL, G_OBJECT (dispatcher));
 799     }
 800   else
 801     {
 802       tp_cli_connection_connect_to_new_channel (connection,
 803         dispatcher_connection_new_channel_cb,
 804         NULL, NULL, G_OBJECT (dispatcher), NULL);
 805
 806       tp_cli_connection_call_list_channels (connection, -1,
 807         dispatcher_connection_list_channels_cb, NULL, NULL,
 808         G_OBJECT (dispatcher));
 809
 810     }
 811
 812   /* Advertise VoIP capabilities */
 813   capabilities = g_ptr_array_sized_new (1);
 814   cap_type = dbus_g_type_get_struct ("GValueArray", G_TYPE_STRING,
 815     G_TYPE_UINT, G_TYPE_INVALID);
 816   g_value_init (&cap, cap_type);
 817   g_value_take_boxed (&cap, dbus_g_type_specialized_construct (cap_type));
 818   dbus_g_type_struct_set (&cap,
 819         0, TP_IFACE_CHANNEL_TYPE_STREAMED_MEDIA,
 820         1, TP_CHANNEL_MEDIA_CAPABILITY_AUDIO |
 821            TP_CHANNEL_MEDIA_CAPABILITY_VIDEO |
 822            TP_CHANNEL_MEDIA_CAPABILITY_NAT_TRAVERSAL_STUN  |
 823            TP_CHANNEL_MEDIA_CAPABILITY_NAT_TRAVERSAL_GTALK_P2P, G_MAXUINT);
 824   g_ptr_array_add (capabilities, g_value_get_boxed (&cap));
 825
 826   tp_cli_connection_interface_capabilities_call_advertise_capabilities (
 827     connection, -1, capabilities, &remove,
 828     dispatcher_connection_advertise_capabilities_cb,
 829     NULL, NULL, G_OBJECT (dispatcher));
 830
 831   g_value_unset (&cap);
 832   g_ptr_array_free (capabilities, TRUE);
 833 }
 834
 835 static GObject*
 836 dispatcher_constructor (GType type,
 837                         guint n_construct_params,
 838                         GObjectConstructParam *construct_params)
 839 {
 840   GObject *retval;
 841
 842   if (dispatcher == NULL)
 843     {
 844       retval = G_OBJECT_CLASS (empathy_dispatcher_parent_class)->constructor
 845           (type, n_construct_params, construct_params);
 846
 847       dispatcher = EMPATHY_DISPATCHER (retval);
 848       g_object_add_weak_pointer (retval, (gpointer) &dispatcher);
 849     }
 850   else
 851     {
 852       retval = g_object_ref (dispatcher);
 853     }
 854
 855   return retval;
 856 }
 857
 858 static void
 859 dispatcher_finalize (GObject *object)
 860 {
 861   EmpathyDispatcherPriv *priv = GET_PRIV (object);
 862   GList *l;
 863   GHashTableIter iter;
 864   gpointer connection;
 865
 866   g_signal_handlers_disconnect_by_func (priv->account_manager,
 867       dispatcher_new_connection_cb, object);
 868
 869   for (l = priv->channels; l; l = l->next)
 870     {
 871       g_signal_handlers_disconnect_by_func (l->data,
 872           dispatcher_channel_invalidated_cb, object);
 873     }
 874
 875   g_list_free (priv->channels);
 876
 877   g_hash_table_iter_init (&iter, priv->connections);
 878   while (g_hash_table_iter_next (&iter, &connection, NULL))
 879     {
 880       g_signal_handlers_disconnect_by_func (connection,
 881           dispatcher_connection_invalidated_cb, object);
 882     }
 883
 884   g_object_unref (priv->account_manager);
 885   g_object_unref (priv->mc);
 886
 887   g_hash_table_destroy (priv->connections);
 888 }
 889
 890 static void
 891 empathy_dispatcher_class_init (EmpathyDispatcherClass *klass)
 892 {
 893   GObjectClass *object_class = G_OBJECT_CLASS (klass);
 894
 895   object_class->finalize = dispatcher_finalize;
 896   object_class->constructor = dispatcher_constructor;
 897
 898   signals[OBSERVE] =
 899     g_signal_new ("observe",
 900       G_TYPE_FROM_CLASS (klass),
 901       G_SIGNAL_RUN_LAST,
 902       0,
 903       NULL, NULL,
 904       g_cclosure_marshal_VOID__OBJECT,
 905       G_TYPE_NONE,
 906       1, EMPATHY_TYPE_DISPATCH_OPERATION);
 907
 908   signals[APPROVE] =
 909     g_signal_new ("approve",
 910       G_TYPE_FROM_CLASS (klass),
 911       G_SIGNAL_RUN_LAST,
 912       0,
 913       NULL, NULL,
 914       g_cclosure_marshal_VOID__OBJECT,
 915       G_TYPE_NONE,
 916       1, EMPATHY_TYPE_DISPATCH_OPERATION);
 917
 918   signals[DISPATCH] =
 919     g_signal_new ("dispatch",
 920       G_TYPE_FROM_CLASS (klass),
 921       G_SIGNAL_RUN_LAST,
 922       0,
 923       NULL, NULL,
 924       g_cclosure_marshal_VOID__OBJECT,
 925       G_TYPE_NONE,
 926       1, EMPATHY_TYPE_DISPATCH_OPERATION);
 927
 928   g_type_class_add_private (object_class, sizeof (EmpathyDispatcherPriv));
 929
 930 }
 931
 932 static void
 933 empathy_dispatcher_init (EmpathyDispatcher *dispatcher)
 934 {
 935   GList *connections, *l;
 936   EmpathyDispatcherPriv *priv = G_TYPE_INSTANCE_GET_PRIVATE (dispatcher,
 937     EMPATHY_TYPE_DISPATCHER, EmpathyDispatcherPriv);
 938
 939   dispatcher->priv = priv;
 940   priv->mc = empathy_mission_control_dup_singleton ();
 941   priv->account_manager = empathy_account_manager_dup_singleton ();
 942
 943   g_signal_connect (priv->account_manager, "new-connection",
 944     G_CALLBACK (dispatcher_new_connection_cb),
 945     dispatcher);
 946
 947   priv->connections = g_hash_table_new_full (g_direct_hash, g_direct_equal,
 948     g_object_unref, (GDestroyNotify) free_connection_data);
 949
 950   priv->channels = NULL;
 951
 952   connections = empathy_account_manager_dup_connections (priv->account_manager);
 953   for (l = connections; l; l = l->next)
 954     {
 955       dispatcher_new_connection_cb (priv->account_manager, l->data, dispatcher);
 956       g_object_unref (l->data);
 957     }
 958   g_list_free (connections);
 959 }
 960
 961 EmpathyDispatcher *
 962 empathy_dispatcher_dup_singleton (void)
 963 {
 964   return EMPATHY_DISPATCHER (g_object_new (EMPATHY_TYPE_DISPATCHER, NULL));
 965 }
 966
 967 static void
 968 dispatcher_request_failed (EmpathyDispatcher *dispatcher,
 969                            DispatcherRequestData *request_data,
 970                            const GError *error)
 971 {
 972   EmpathyDispatcherPriv *priv = GET_PRIV (dispatcher);
 973   ConnectionData *conn_data;
 974
 975   conn_data = g_hash_table_lookup (priv->connections, request_data->connection);
 976   if (request_data->cb != NULL)
 977     request_data->cb (NULL, error, request_data->user_data);
 978
 979   conn_data->outstanding_requests =
 980       g_list_remove (conn_data->outstanding_requests, request_data);
 981   free_dispatcher_request_data (request_data);
 982 }
 983
 984 static void
 985 dispatcher_connection_new_requested_channel (EmpathyDispatcher *dispatcher,
 986                                              DispatcherRequestData *request_data,
 987                                              const gchar *object_path,
 988                                              GHashTable *properties,
 989                                              const GError *error)
 990 {
 991   EmpathyDispatcherPriv *priv = GET_PRIV (dispatcher);
 992   EmpathyDispatchOperation *operation = NULL;
 993   ConnectionData *conn_data;
 994
 995   conn_data = g_hash_table_lookup (priv->connections,
 996     request_data->connection);
 997
 998   if (error)
 999     {
1000       DEBUG ("Channel request failed: %s", error->message);
1001
1002       dispatcher_request_failed (dispatcher, request_data, error);
1003
1004       goto out;
1005     }
1006
1007   operation = g_hash_table_lookup (conn_data->outstanding_channels,
1008     object_path);
1009
1010   if (operation != NULL)
1011     g_hash_table_remove (conn_data->outstanding_channels, object_path);
1012   else
1013     operation = g_hash_table_lookup (conn_data->dispatching_channels,
1014         object_path);
1015
1016   if (operation == NULL)
1017     {
1018       DispatchData *data = g_hash_table_lookup (conn_data->dispatched_channels,
1019         object_path);
1020
1021       if (data != NULL)
1022         {
1023           operation = empathy_dispatch_operation_new_with_wrapper (
1024             request_data->connection,
1025             data->channel, request_data->contact, FALSE,
1026             data->channel_wrapper);
1027         }
1028       else
1029         {
1030           TpChannel *channel;
1031
1032           if (properties != NULL)
1033             channel = tp_channel_new_from_properties (request_data->connection,
1034               object_path, properties, NULL);
1035           else
1036             channel = tp_channel_new (request_data->connection, object_path,
1037               request_data->channel_type, request_data->handle_type,
1038               request_data->handle, NULL);
1039
1040           g_signal_connect (channel, "invalidated",
1041             G_CALLBACK (dispatcher_channel_invalidated_cb),
1042             request_data->dispatcher);
1043
1044           priv->channels = g_list_prepend (priv->channels, channel);
1045
1046           operation = empathy_dispatch_operation_new (request_data->connection,
1047              channel, request_data->contact, FALSE);
1048           g_object_unref (channel);
1049         }
1050     }
1051   else
1052     {
1053       /* Already existed set potential extra information */
1054       g_object_set (G_OBJECT (operation),
1055         "contact", request_data->contact,
1056         NULL);
1057     }
1058
1059   request_data->operation = operation;
1060
1061   /* (pre)-approve this right away as we requested it
1062    * This might cause the channel to be claimed, in which case the operation
1063    * will disappear. So ref it, and check the status before starting the
1064    * dispatching */
1065
1066   g_object_ref (operation);
1067   empathy_dispatch_operation_approve (operation);
1068
1069    if (empathy_dispatch_operation_get_status (operation) <
1070      EMPATHY_DISPATCHER_OPERATION_STATE_APPROVING)
1071       dispatcher_start_dispatching (request_data->dispatcher, operation,
1072           conn_data);
1073
1074   g_object_unref (operation);
1075
1076 out:
1077   dispatcher_flush_outstanding_operations (request_data->dispatcher,
1078     conn_data);
1079 }
1080
1081 static void
1082 dispatcher_request_channel_cb (TpConnection *connection,
1083                                const gchar  *object_path,
1084                                const GError *error,
1085                                gpointer user_data,
1086                                GObject *weak_object)
1087 {
1088   EmpathyDispatcher *dispatcher = EMPATHY_DISPATCHER (weak_object);
1089   DispatcherRequestData *request_data = (DispatcherRequestData*) user_data;
1090
1091   dispatcher_connection_new_requested_channel (dispatcher,
1092     request_data, object_path, NULL, error);
1093 }
1094
1095 static void
1096 dispatcher_request_channel (DispatcherRequestData *request_data)
1097 {
1098   tp_cli_connection_call_request_channel (request_data->connection, -1,
1099     request_data->channel_type,
1100     request_data->handle_type,
1101     request_data->handle,
1102     TRUE, dispatcher_request_channel_cb,
1103     request_data, NULL, G_OBJECT (request_data->dispatcher));
1104 }
1105
1106 void
1107 empathy_dispatcher_chat_with_contact (EmpathyContact *contact,
1108                                       EmpathyDispatcherRequestCb *callback,
1109                                       gpointer user_data)
1110 {
1111   EmpathyDispatcher *dispatcher;
1112   EmpathyDispatcherPriv *priv;
1113   TpConnection *connection;
1114   ConnectionData *connection_data;
1115   DispatcherRequestData *request_data;
1116
1117   g_return_if_fail (EMPATHY_IS_CONTACT (contact));
1118
1119   dispatcher = empathy_dispatcher_dup_singleton();
1120   priv = GET_PRIV (dispatcher);
1121
1122   connection = empathy_contact_get_connection (contact);
1123   connection_data = g_hash_table_lookup (priv->connections, connection);
1124
1125   /* The contact handle might not be known yet */
1126   request_data  = new_dispatcher_request_data (dispatcher, connection,
1127     TP_IFACE_CHANNEL_TYPE_TEXT, TP_HANDLE_TYPE_CONTACT,
1128     empathy_contact_get_handle (contact), NULL, contact, callback, user_data);
1129
1130   connection_data->outstanding_requests = g_list_prepend
1131     (connection_data->outstanding_requests, request_data);
1132
1133   dispatcher_request_channel (request_data);
1134
1135   g_object_unref (dispatcher);
1136 }
1137
1138 typedef struct
1139 {
1140   EmpathyDispatcher *dispatcher;
1141   EmpathyDispatcherRequestCb *callback;
1142   gpointer user_data;
1143 } ChatWithContactIdData;
1144
1145 static void
1146 dispatcher_chat_with_contact_id_cb (EmpathyTpContactFactory *factory,
1147                                     EmpathyContact          *contact,
1148                                     const GError            *error,
1149                                     gpointer                 user_data,
1150                                     GObject                 *weak_object)
1151 {
1152   ChatWithContactIdData *data = user_data;
1153
1154   if (error)
1155     {
1156       /* FIXME: Should call data->callback with the error */
1157       DEBUG ("Error: %s", error->message);
1158     }
1159   else
1160     {
1161       empathy_dispatcher_chat_with_contact (contact, data->callback, data->user_data);
1162     }
1163
1164   g_object_unref (data->dispatcher);
1165   g_slice_free (ChatWithContactIdData, data);
1166 }
1167
1168 void
1169 empathy_dispatcher_chat_with_contact_id (TpConnection *connection,
1170                                          const gchar *contact_id,
1171                                          EmpathyDispatcherRequestCb *callback,
1172                                          gpointer user_data)
1173 {
1174   EmpathyDispatcher *dispatcher;
1175   EmpathyTpContactFactory *factory;
1176   ChatWithContactIdData *data;
1177
1178   g_return_if_fail (TP_IS_CONNECTION (connection));
1179   g_return_if_fail (!EMP_STR_EMPTY (contact_id));
1180
1181   dispatcher = empathy_dispatcher_dup_singleton ();
1182   factory = empathy_tp_contact_factory_dup_singleton (connection);
1183   data = g_slice_new0 (ChatWithContactIdData);
1184   data->dispatcher = dispatcher;
1185   data->callback = callback;
1186   data->user_data = user_data;
1187   empathy_tp_contact_factory_get_from_id (factory, contact_id,
1188       dispatcher_chat_with_contact_id_cb, data, NULL, NULL);
1189
1190   g_object_unref (factory);
1191 }
1192
1193 static void
1194 dispatcher_request_handles_cb (TpConnection *connection,
1195                                const GArray *handles,
1196                                const GError *error,
1197                                gpointer user_data,
1198                                GObject *object)
1199 {
1200   DispatcherRequestData *request_data = (DispatcherRequestData *) user_data;
1201
1202   if (error != NULL)
1203     {
1204       EmpathyDispatcher *dispatcher = EMPATHY_DISPATCHER (object);
1205       EmpathyDispatcherPriv *priv = GET_PRIV (dispatcher);
1206       ConnectionData *cd;
1207
1208       cd = g_hash_table_lookup (priv->connections, request_data->connection);
1209
1210       if (request_data->cb)
1211         request_data->cb (NULL, error, request_data->user_data);
1212
1213       cd->outstanding_requests = g_list_remove (cd->outstanding_requests,
1214         request_data);
1215
1216       free_dispatcher_request_data (request_data);
1217
1218       dispatcher_flush_outstanding_operations (dispatcher, cd);
1219       return;
1220     }
1221
1222   request_data->handle = g_array_index (handles, guint, 0);
1223   dispatcher_request_channel (request_data);
1224 }
1225
1226 void
1227 empathy_dispatcher_join_muc (TpConnection *connection,
1228                              const gchar *roomname,
1229                              EmpathyDispatcherRequestCb *callback,
1230                              gpointer user_data)
1231 {
1232   EmpathyDispatcher *dispatcher;
1233   EmpathyDispatcherPriv *priv;
1234   DispatcherRequestData *request_data;
1235   ConnectionData *connection_data;
1236   const gchar *names[] = { roomname, NULL };
1237
1238   g_return_if_fail (TP_IS_CONNECTION (connection));
1239   g_return_if_fail (!EMP_STR_EMPTY (roomname));
1240
1241   dispatcher = empathy_dispatcher_dup_singleton();
1242   priv = GET_PRIV (dispatcher);
1243
1244   connection_data = g_hash_table_lookup (priv->connections, connection);
1245
1246   /* Don't know the room handle yet */
1247   request_data  = new_dispatcher_request_data (dispatcher, connection,
1248     TP_IFACE_CHANNEL_TYPE_TEXT, TP_HANDLE_TYPE_ROOM, 0, NULL,
1249     NULL, callback, user_data);
1250
1251   connection_data->outstanding_requests = g_list_prepend
1252     (connection_data->outstanding_requests, request_data);
1253
1254   tp_cli_connection_call_request_handles (connection, -1,
1255     TP_HANDLE_TYPE_ROOM, names,
1256     dispatcher_request_handles_cb, request_data, NULL,
1257     G_OBJECT (dispatcher));
1258
1259   g_object_unref (dispatcher);
1260 }
1261
1262 static void
1263 dispatcher_create_channel_cb (TpConnection *connect,
1264                               const gchar *object_path,
1265                               GHashTable *properties,
1266                               const GError *error,
1267                               gpointer user_data,
1268                               GObject *weak_object)
1269 {
1270   EmpathyDispatcher *dispatcher = EMPATHY_DISPATCHER (weak_object);
1271   DispatcherRequestData *request_data = (DispatcherRequestData*) user_data;
1272
1273   dispatcher_connection_new_requested_channel (dispatcher,
1274     request_data, object_path, properties, error);
1275 }
1276
1277 void
1278 empathy_dispatcher_create_channel (EmpathyDispatcher *dispatcher,
1279                                    TpConnection *connection,
1280                                    GHashTable *request,
1281                                    EmpathyDispatcherRequestCb *callback,
1282                                    gpointer user_data)
1283 {
1284   EmpathyDispatcherPriv *priv = GET_PRIV (dispatcher);
1285   ConnectionData *connection_data;
1286   DispatcherRequestData *request_data;
1287   const gchar *channel_type;
1288   guint handle_type;
1289   guint handle;
1290   gboolean valid;
1291
1292   g_return_if_fail (EMPATHY_IS_DISPATCHER (dispatcher));
1293   g_return_if_fail (TP_IS_CONNECTION (connection));
1294   g_return_if_fail (request != NULL);
1295
1296   connection_data = g_hash_table_lookup (priv->connections, connection);
1297   g_assert (connection_data != NULL);
1298
1299   channel_type = tp_asv_get_string (request, TP_IFACE_CHANNEL ".ChannelType");
1300
1301   handle_type = tp_asv_get_uint32 (request,
1302     TP_IFACE_CHANNEL ".TargetHandleType", &valid);
1303   if (!valid)
1304     handle_type = TP_UNKNOWN_HANDLE_TYPE;
1305
1306   handle = tp_asv_get_uint32 (request, TP_IFACE_CHANNEL ".TargetHandle", NULL);
1307
1308   request_data  = new_dispatcher_request_data (dispatcher, connection,
1309     channel_type, handle_type, handle, request,
1310     NULL, callback, user_data);
1311
1312   connection_data->outstanding_requests = g_list_prepend
1313     (connection_data->outstanding_requests, request_data);
1314
1315   tp_cli_connection_interface_requests_call_create_channel (
1316     request_data->connection, -1,
1317     request_data->request, dispatcher_create_channel_cb, request_data, NULL,
1318     G_OBJECT (request_data->dispatcher));
1319 }
1320
1321 void
1322 empathy_dispatcher_send_file_to_contact (EmpathyContact *contact,
1323                                          const gchar *filename,
1324                                          guint64 size,
1325                                          guint64 date,
1326                                          const gchar *content_type,
1327                                          EmpathyDispatcherRequestCb *callback,
1328                                          gpointer user_data)
1329 {
1330   EmpathyDispatcher *dispatcher = empathy_dispatcher_dup_singleton();
1331   EmpathyDispatcherPriv *priv = GET_PRIV (dispatcher);
1332   TpConnection *connection = empathy_contact_get_connection (contact);
1333   ConnectionData *connection_data =
1334     g_hash_table_lookup (priv->connections, connection);
1335   DispatcherRequestData *request_data;
1336   GValue *value;
1337   GHashTable *request = g_hash_table_new_full (g_str_hash, g_str_equal, NULL,
1338       (GDestroyNotify) tp_g_value_slice_free);
1339
1340   g_return_if_fail (EMPATHY_IS_CONTACT (contact));
1341   g_return_if_fail (!EMP_STR_EMPTY (filename));
1342   g_return_if_fail (!EMP_STR_EMPTY (content_type));
1343
1344   /* org.freedesktop.Telepathy.Channel.ChannelType */
1345   value = tp_g_value_slice_new (G_TYPE_STRING);
1346   g_value_set_string (value, TP_IFACE_CHANNEL_TYPE_FILE_TRANSFER);
1347   g_hash_table_insert (request, TP_IFACE_CHANNEL ".ChannelType", value);
1348
1349   /* org.freedesktop.Telepathy.Channel.TargetHandleType */
1350   value = tp_g_value_slice_new (G_TYPE_UINT);
1351   g_value_set_uint (value, TP_HANDLE_TYPE_CONTACT);
1352   g_hash_table_insert (request, TP_IFACE_CHANNEL ".TargetHandleType", value);
1353
1354   /* org.freedesktop.Telepathy.Channel.TargetHandle */
1355   value = tp_g_value_slice_new (G_TYPE_UINT);
1356   g_value_set_uint (value, empathy_contact_get_handle (contact));
1357   g_hash_table_insert (request, TP_IFACE_CHANNEL ".TargetHandle", value);
1358
1359   /* org.freedesktop.Telepathy.Channel.Type.FileTransfer.ContentType */
1360   value = tp_g_value_slice_new (G_TYPE_STRING);
1361   g_value_set_string (value, content_type);
1362   g_hash_table_insert (request,
1363     TP_IFACE_CHANNEL_TYPE_FILE_TRANSFER ".ContentType", value);
1364
1365   /* org.freedesktop.Telepathy.Channel.Type.FileTransfer.Filename */
1366   value = tp_g_value_slice_new (G_TYPE_STRING);
1367   g_value_set_string (value, filename);
1368   g_hash_table_insert (request,
1369     TP_IFACE_CHANNEL_TYPE_FILE_TRANSFER ".Filename", value);
1370
1371   /* org.freedesktop.Telepathy.Channel.Type.FileTransfer.Size */
1372   value = tp_g_value_slice_new (G_TYPE_UINT64);
1373   g_value_set_uint64 (value, size);
1374   g_hash_table_insert (request,
1375     TP_IFACE_CHANNEL_TYPE_FILE_TRANSFER ".Size", value);
1376
1377   /* org.freedesktop.Telepathy.Channel.Type.FileTransfer.Date */
1378   value = tp_g_value_slice_new (G_TYPE_UINT64);
1379   g_value_set_uint64 (value, date);
1380   g_hash_table_insert (request,
1381     TP_IFACE_CHANNEL_TYPE_FILE_TRANSFER ".Date", value);
1382
1383   request_data = new_dispatcher_request_data (dispatcher, connection,
1384     TP_IFACE_CHANNEL_TYPE_FILE_TRANSFER, TP_HANDLE_TYPE_CONTACT,
1385     empathy_contact_get_handle (contact), request, contact, callback,
1386     user_data);
1387   connection_data->outstanding_requests = g_list_prepend
1388     (connection_data->outstanding_requests, request_data);
1389
1390   tp_cli_connection_interface_requests_call_create_channel (
1391     request_data->connection, -1,
1392     request_data->request, dispatcher_create_channel_cb, request_data, NULL,
1393     G_OBJECT (request_data->dispatcher));
1394
1395   g_object_unref (dispatcher);
1396 }
1397
1398 GStrv
1399 empathy_dispatcher_find_channel_class (EmpathyDispatcher *dispatcher,
1400                                        TpConnection *connection,
1401                                        const gchar *channel_type,
1402                                        guint handle_type)
1403 {
1404   EmpathyDispatcherPriv *priv = GET_PRIV (dispatcher);
1405   ConnectionData *cd;
1406   int i;
1407   GPtrArray *classes;
1408
1409   g_return_val_if_fail (channel_type != NULL, NULL);
1410   g_return_val_if_fail (handle_type != 0, NULL);
1411
1412   cd = g_hash_table_lookup (priv->connections, connection);
1413
1414   if (cd == NULL)
1415     return NULL;
1416
1417   classes = cd->requestable_channels;
1418   if (classes == NULL)
1419     return NULL;
1420
1421   for (i = 0; i < classes->len; i++)
1422     {
1423       GValueArray *class;
1424       GValue *fixed;
1425       GValue *allowed;
1426       GHashTable *fprops;
1427       const gchar *c_type;
1428       guint32 h_type;
1429       gboolean valid;
1430
1431       class = g_ptr_array_index (classes, i);
1432       fixed = g_value_array_get_nth (class, 0);
1433
1434       fprops = g_value_get_boxed (fixed);
1435       c_type = tp_asv_get_string (fprops, TP_IFACE_CHANNEL ".ChannelType");
1436
1437       if (tp_strdiff (channel_type, c_type))
1438         continue;
1439
1440       h_type = tp_asv_get_uint32 (fprops,
1441         TP_IFACE_CHANNEL ".TargetHandleType", &valid);
1442
1443       if (!valid || handle_type != h_type)
1444         continue;
1445
1446       allowed = g_value_array_get_nth (class, 1);
1447
1448       return g_value_get_boxed (allowed);
1449     }
1450
1451   return NULL;
1452 }
1453