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