libempathy/empathy-dispatcher.c

   1 /* * Copyright (C) 2007-2009 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  *          Sjoerd Simons <sjoerd.simons@collabora.co.uk>
  19  *          Cosimo Cecchi <cosimo.cecchi@collabora.co.uk>
  20  */
  21
  22 #define DISPATCHER_BUS_NAME TP_CLIENT_BUS_NAME_BASE "Empathy"
  23 #define DISPATCHER_OBJECT_PATH TP_CLIENT_OBJECT_PATH_BASE "Empathy"
  24
  25 #include <config.h>
  26
  27 #include <string.h>
  28
  29 #include <glib/gi18n-lib.h>
  30
  31 #include <telepathy-glib/enums.h>
  32 #include <telepathy-glib/connection.h>
  33 #include <telepathy-glib/util.h>
  34 #include <telepathy-glib/dbus.h>
  35 #include <telepathy-glib/proxy-subclass.h>
  36 #include <telepathy-glib/gtypes.h>
  37 #include <telepathy-glib/defs.h>
  38 #include <telepathy-glib/svc-client.h>
  39 #include <telepathy-glib/svc-generic.h>
  40 #include <telepathy-glib/interfaces.h>
  41
  42 #include <extensions/extensions.h>
  43
  44 #include "empathy-dispatcher.h"
  45 #include "empathy-handler.h"
  46 #include "empathy-utils.h"
  47 #include "empathy-tube-handler.h"
  48 #include "empathy-account-manager.h"
  49 #include "empathy-tp-contact-factory.h"
  50 #include "empathy-chatroom-manager.h"
  51 #include "empathy-utils.h"
  52
  53 #define DEBUG_FLAG EMPATHY_DEBUG_DISPATCHER
  54 #include <libempathy/empathy-debug.h>
  55
  56 #define GET_PRIV(obj) EMPATHY_GET_PRIV (obj, EmpathyDispatcher)
  57 typedef struct
  58 {
  59   gboolean dispose_has_run;
  60
  61   EmpathyAccountManager *account_manager;
  62   /* connection to connection data mapping */
  63   GHashTable *connections;
  64   GHashTable *outstanding_classes_requests;
  65   gpointer token;
  66   GSList *tubes;
  67
  68   /* channels which the dispatcher is listening "invalidated" */
  69   GList *channels;
  70   GPtrArray *array;
  71
  72   /* main handler */
  73   EmpathyHandler *handler;
  74
  75   /* extra handlers */
  76   GList *handlers;
  77
  78   GHashTable *request_channel_class_async_ids;
  79 } EmpathyDispatcherPriv;
  80
  81 static GList *
  82 empathy_dispatcher_get_channels (EmpathyHandler *handler,
  83     gpointer user_data);
  84
  85 static gboolean
  86 empathy_dispatcher_handle_channels (EmpathyHandler *handler,
  87     const gchar *account_path,
  88     const gchar *connection_path,
  89     const GPtrArray *channels,
  90     const GPtrArray *requests_satisfied,
  91     guint64 timestamp,
  92     GHashTable *handler_info,
  93     gpointer user_data,
  94     GError **error);
  95
  96 G_DEFINE_TYPE (EmpathyDispatcher, empathy_dispatcher, G_TYPE_OBJECT);
  97
  98 enum
  99 {
 100   PROP_INTERFACES = 1,
 101   PROP_HANDLER,
 102 };
 103
 104 enum
 105 {
 106   OBSERVE,
 107   APPROVE,
 108   DISPATCH,
 109   LAST_SIGNAL
 110 };
 111
 112 static guint signals[LAST_SIGNAL];
 113 static EmpathyDispatcher *dispatcher = NULL;
 114
 115 static void dispatcher_init_connection_if_needed (
 116     EmpathyDispatcher *dispatcher,
 117     TpConnection *connection);
 118
 119 static GList * empathy_dispatcher_find_channel_classes
 120   (EmpathyDispatcher *dispatcher, TpConnection *connection,
 121    const gchar *channel_type, guint handle_type, GArray *fixed_properties);
 122
 123
 124 typedef struct
 125 {
 126   EmpathyDispatcher *dispatcher;
 127   EmpathyDispatchOperation *operation;
 128   TpConnection *connection;
 129   gboolean should_ensure;
 130   gchar *channel_type;
 131   guint handle_type;
 132   guint handle;
 133   EmpathyContact *contact;
 134   TpProxyPendingCall *pending_call;
 135
 136   /* Properties to pass to the channel when requesting it */
 137   GHashTable *request;
 138   EmpathyDispatcherRequestCb *cb;
 139   gpointer user_data;
 140   gpointer *request_data;
 141 } DispatcherRequestData;
 142
 143 typedef struct
 144 {
 145   TpChannel *channel;
 146   /* Channel type specific wrapper object */
 147   GObject *channel_wrapper;
 148 } DispatchData;
 149
 150 typedef struct
 151 {
 152   /* ObjectPath => DispatchData.. */
 153   GHashTable *dispatched_channels;
 154   /* ObjectPath -> EmpathyDispatchOperations */
 155   GHashTable *dispatching_channels;
 156
 157   /* ObjectPath -> EmpathyDispatchOperations
 158    *
 159    * This holds channels which were announced with NewChannel while we have an
 160    * outstanding channel request for a channel of this type. On the Requests
 161    * interface, CreateChannel and EnsureChannel are guaranteed by the spec to
 162    * return before NewChannels is emitted, but there was no guarantee of the
 163    * ordering of RequestChannel vs. NewChannel. So if necessary, channels are
 164    * held in limbo here until we know whether they were requested.
 165    */
 166   GHashTable *outstanding_channels;
 167   /* List of DispatcherRequestData */
 168   GList *outstanding_requests;
 169   /* List of requestable channel classes */
 170   GPtrArray *requestable_channels;
 171 } ConnectionData;
 172
 173 typedef struct
 174 {
 175   EmpathyDispatcher *dispatcher;
 176   TpConnection *connection;
 177   char *channel_type;
 178   guint handle_type;
 179   GArray *properties;
 180   EmpathyDispatcherFindChannelClassCb *callback;
 181   gpointer user_data;
 182 } FindChannelRequest;
 183
 184 static void
 185 empathy_dispatcher_call_create_or_ensure_channel (
 186     EmpathyDispatcher *dispatcher,
 187     DispatcherRequestData *request_data);
 188
 189 static DispatchData *
 190 new_dispatch_data (TpChannel *channel,
 191                    GObject *channel_wrapper)
 192 {
 193   DispatchData *d = g_slice_new0 (DispatchData);
 194   d->channel = g_object_ref (channel);
 195   if (channel_wrapper != NULL)
 196     d->channel_wrapper = g_object_ref (channel_wrapper);
 197
 198   return d;
 199 }
 200
 201 static void
 202 free_dispatch_data (DispatchData *data)
 203 {
 204   g_object_unref (data->channel);
 205   if (data->channel_wrapper != NULL)
 206     g_object_unref (data->channel_wrapper);
 207
 208   g_slice_free (DispatchData, data);
 209 }
 210
 211 static DispatcherRequestData *
 212 new_dispatcher_request_data (EmpathyDispatcher *self,
 213                              TpConnection *connection,
 214                              const gchar *channel_type,
 215                              guint handle_type,
 216                              guint handle,
 217                              GHashTable *request,
 218                              EmpathyContact *contact,
 219                              EmpathyDispatcherRequestCb *cb,
 220                              gpointer user_data)
 221 {
 222   DispatcherRequestData *result = g_slice_new0 (DispatcherRequestData);
 223
 224   result->dispatcher = g_object_ref (self);
 225   result->connection = connection;
 226
 227   result->should_ensure = FALSE;
 228
 229   result->channel_type = g_strdup (channel_type);
 230   result->handle_type = handle_type;
 231   result->handle = handle;
 232   result->request = request;
 233
 234   if (contact != NULL)
 235     result->contact = g_object_ref (contact);
 236
 237   result->cb = cb;
 238   result->user_data = user_data;
 239
 240   return result;
 241 }
 242
 243 static void
 244 free_dispatcher_request_data (DispatcherRequestData *r)
 245 {
 246   g_free (r->channel_type);
 247
 248   if (r->dispatcher != NULL)
 249     g_object_unref (r->dispatcher);
 250
 251   if (r->contact != NULL)
 252     g_object_unref (r->contact);
 253
 254   if (r->request != NULL)
 255     g_hash_table_unref (r->request);
 256
 257   if (r->pending_call != NULL)
 258     tp_proxy_pending_call_cancel (r->pending_call);
 259
 260   g_slice_free (DispatcherRequestData, r);
 261 }
 262
 263 static ConnectionData *
 264 new_connection_data (void)
 265 {
 266   ConnectionData *cd = g_slice_new0 (ConnectionData);
 267
 268   cd->dispatched_channels = g_hash_table_new_full (g_str_hash, g_str_equal,
 269       g_free, (GDestroyNotify) free_dispatch_data);
 270
 271   cd->dispatching_channels = g_hash_table_new_full (g_str_hash, g_str_equal,
 272       g_free, g_object_unref);
 273
 274   cd->outstanding_channels = g_hash_table_new_full (g_str_hash, g_str_equal,
 275       g_free, NULL);
 276
 277   return cd;
 278 }
 279
 280 static void
 281 free_connection_data (ConnectionData *cd)
 282 {
 283   GList *l;
 284   guint i;
 285
 286   g_hash_table_destroy (cd->dispatched_channels);
 287   g_hash_table_destroy (cd->dispatching_channels);
 288
 289   for (l = cd->outstanding_requests ; l != NULL; l = g_list_delete_link (l,l))
 290     {
 291       free_dispatcher_request_data (l->data);
 292     }
 293
 294   if (cd->requestable_channels  != NULL)
 295     {
 296       for (i = 0 ; i < cd->requestable_channels->len ; i++)
 297           g_value_array_free (
 298             g_ptr_array_index (cd->requestable_channels, i));
 299       g_ptr_array_free (cd->requestable_channels, TRUE);
 300     }
 301 }
 302
 303 static void
 304 free_find_channel_request (FindChannelRequest *r)
 305 {
 306   guint idx;
 307   char *str;
 308
 309   g_object_unref (r->dispatcher);
 310   g_free (r->channel_type);
 311
 312   if (r->properties != NULL)
 313     {
 314       for (idx = 0; idx < r->properties->len ; idx++)
 315         {
 316           str = g_array_index (r->properties, char *, idx);
 317           g_free (str);
 318         }
 319
 320       g_array_free (r->properties, TRUE);
 321     }
 322
 323   g_slice_free (FindChannelRequest, r);
 324 }
 325
 326 static void
 327 dispatcher_connection_invalidated_cb (TpConnection *connection,
 328                                       guint domain,
 329                                       gint code,
 330                                       gchar *message,
 331                                       EmpathyDispatcher *self)
 332 {
 333   EmpathyDispatcherPriv *priv = GET_PRIV (self);
 334
 335   DEBUG ("Error: %s", message);
 336   g_hash_table_remove (priv->connections, connection);
 337 }
 338
 339 static gboolean
 340 dispatcher_operation_can_start (EmpathyDispatcher *self,
 341                                 EmpathyDispatchOperation *operation,
 342                                 ConnectionData *cd)
 343 {
 344   GList *l;
 345   const gchar *channel_type =
 346     empathy_dispatch_operation_get_channel_type (operation);
 347
 348   for (l = cd->outstanding_requests; l != NULL; l = g_list_next (l))
 349     {
 350       DispatcherRequestData *d = (DispatcherRequestData *) l->data;
 351
 352       if (d->operation == NULL && !tp_strdiff (d->channel_type, channel_type))
 353         {
 354           return FALSE;
 355         }
 356     }
 357
 358   return TRUE;
 359 }
 360
 361 static void
 362 dispatch_operation_flush_requests (EmpathyDispatcher *self,
 363                                    EmpathyDispatchOperation *operation,
 364                                    GError *error,
 365                                    ConnectionData *cd)
 366 {
 367   GList *l;
 368
 369   l = cd->outstanding_requests;
 370   while (l != NULL)
 371     {
 372       DispatcherRequestData *d = (DispatcherRequestData *) l->data;
 373       GList *lt = l;
 374
 375       l = g_list_next (l);
 376
 377       if (d->operation == operation)
 378         {
 379           if (d->cb != NULL)
 380             {
 381               if (error != NULL)
 382                 d->cb (NULL, error, d->user_data);
 383               else
 384                 d->cb (operation, NULL, d->user_data);
 385             }
 386
 387           cd->outstanding_requests = g_list_delete_link
 388             (cd->outstanding_requests, lt);
 389
 390           free_dispatcher_request_data (d);
 391         }
 392     }
 393 }
 394
 395 static void
 396 dispatcher_channel_invalidated_cb (TpProxy *proxy,
 397                                    guint domain,
 398                                    gint code,
 399                                    gchar *message,
 400                                    EmpathyDispatcher *self)
 401 {
 402   /* Channel went away... */
 403   EmpathyDispatcherPriv *priv = GET_PRIV (self);
 404   TpConnection *connection;
 405   EmpathyDispatchOperation *operation;
 406   ConnectionData *cd;
 407   const gchar *object_path;
 408
 409   connection = tp_channel_borrow_connection (TP_CHANNEL (proxy));
 410
 411   cd = g_hash_table_lookup (priv->connections, connection);
 412   /* Connection itself invalidated? */
 413   if (cd == NULL)
 414     return;
 415
 416   object_path = tp_proxy_get_object_path (proxy);
 417
 418   DEBUG ("Channel %s invalidated", object_path);
 419
 420   g_hash_table_remove (cd->dispatched_channels, object_path);
 421   g_hash_table_remove (cd->dispatching_channels, object_path);
 422
 423   priv->channels = g_list_remove (priv->channels, proxy);
 424
 425   operation = g_hash_table_lookup (cd->outstanding_channels, object_path);
 426   if (operation != NULL)
 427     {
 428       GError error = { domain, code, message };
 429       dispatch_operation_flush_requests (self, operation, &error, cd);
 430       g_hash_table_remove (cd->outstanding_channels, object_path);
 431       g_object_unref (operation);
 432     }
 433 }
 434
 435 static void
 436 dispatch_operation_approved_cb (EmpathyDispatchOperation *operation,
 437                                 EmpathyDispatcher *self)
 438 {
 439   g_assert (empathy_dispatch_operation_is_incoming (operation));
 440   DEBUG ("Send of for dispatching: %s",
 441     empathy_dispatch_operation_get_object_path (operation));
 442   g_signal_emit (self, signals[DISPATCH], 0, operation);
 443 }
 444
 445 static void
 446 dispatch_operation_claimed_cb (EmpathyDispatchOperation *operation,
 447                                EmpathyDispatcher *self)
 448 {
 449   /* Our job is done, remove the dispatch operation and mark the channel as
 450    * dispatched */
 451   EmpathyDispatcherPriv *priv = GET_PRIV (self);
 452   TpConnection *connection;
 453   ConnectionData *cd;
 454   const gchar *object_path;
 455
 456   connection = empathy_dispatch_operation_get_tp_connection (operation);
 457   cd = g_hash_table_lookup (priv->connections, connection);
 458   g_assert (cd != NULL);
 459
 460   object_path = empathy_dispatch_operation_get_object_path (operation);
 461
 462   if (g_hash_table_lookup (cd->dispatched_channels, object_path) == NULL)
 463     {
 464       DispatchData *d;
 465       d = new_dispatch_data (
 466         empathy_dispatch_operation_get_channel (operation),
 467         empathy_dispatch_operation_get_channel_wrapper (operation));
 468       g_hash_table_insert (cd->dispatched_channels,
 469         g_strdup (object_path), d);
 470     }
 471   g_hash_table_remove (cd->dispatching_channels, object_path);
 472
 473   DEBUG ("Channel claimed: %s", object_path);
 474 }
 475
 476 static void
 477 dispatch_operation_ready_cb (EmpathyDispatchOperation *operation,
 478                              EmpathyDispatcher *self)
 479 {
 480   EmpathyDispatcherPriv *priv = GET_PRIV (self);
 481   TpConnection *connection;
 482   ConnectionData *cd;
 483   EmpathyDispatchOperationState status;
 484
 485   g_signal_connect (operation, "approved",
 486     G_CALLBACK (dispatch_operation_approved_cb), self);
 487
 488   g_signal_connect (operation, "claimed",
 489     G_CALLBACK (dispatch_operation_claimed_cb), self);
 490
 491   /* Signal the observers */
 492   DEBUG ("Send to observers: %s",
 493     empathy_dispatch_operation_get_object_path (operation));
 494   g_signal_emit (self, signals[OBSERVE], 0, operation);
 495
 496   empathy_dispatch_operation_start (operation);
 497
 498   /* Signal potential requestors */
 499   connection =  empathy_dispatch_operation_get_tp_connection (operation);
 500   cd = g_hash_table_lookup (priv->connections, connection);
 501   g_assert (cd != NULL);
 502
 503   g_object_ref (operation);
 504   g_object_ref (self);
 505
 506   dispatch_operation_flush_requests (self, operation, NULL, cd);
 507   status = empathy_dispatch_operation_get_status (operation);
 508   g_object_unref (operation);
 509
 510   if (status == EMPATHY_DISPATCHER_OPERATION_STATE_CLAIMED)
 511     return;
 512
 513   if (status == EMPATHY_DISPATCHER_OPERATION_STATE_APPROVING)
 514     {
 515       DEBUG ("Send to approvers: %s",
 516         empathy_dispatch_operation_get_object_path (operation));
 517       g_signal_emit (self, signals[APPROVE], 0, operation);
 518     }
 519   else
 520     {
 521       g_assert (status == EMPATHY_DISPATCHER_OPERATION_STATE_DISPATCHING);
 522       DEBUG ("Send of for dispatching: %s",
 523         empathy_dispatch_operation_get_object_path (operation));
 524       g_signal_emit (self, signals[DISPATCH], 0, operation);
 525     }
 526
 527   g_object_unref (self);
 528 }
 529
 530 static void
 531 dispatcher_start_dispatching (EmpathyDispatcher *self,
 532                               EmpathyDispatchOperation *operation,
 533                               ConnectionData *cd)
 534 {
 535   const gchar *object_path =
 536     empathy_dispatch_operation_get_object_path (operation);
 537
 538   DEBUG ("Dispatching process started for %s", object_path);
 539
 540   if (g_hash_table_lookup (cd->dispatching_channels, object_path) == NULL)
 541     {
 542       g_assert (g_hash_table_lookup (cd->outstanding_channels,
 543         object_path) == NULL);
 544
 545       g_hash_table_insert (cd->dispatching_channels,
 546         g_strdup (object_path), operation);
 547
 548       switch (empathy_dispatch_operation_get_status (operation))
 549         {
 550           case EMPATHY_DISPATCHER_OPERATION_STATE_PREPARING:
 551             g_signal_connect (operation, "ready",
 552               G_CALLBACK (dispatch_operation_ready_cb), self);
 553             break;
 554           case EMPATHY_DISPATCHER_OPERATION_STATE_PENDING:
 555             dispatch_operation_ready_cb (operation, self);
 556             break;
 557           default:
 558             g_assert_not_reached ();
 559         }
 560
 561     }
 562   else if (empathy_dispatch_operation_get_status (operation) >=
 563       EMPATHY_DISPATCHER_OPERATION_STATE_PENDING)
 564     {
 565       /* Already dispatching and the operation is pending, thus the observers
 566        * have seen it (if applicable), so we can flush the request right away.
 567        */
 568       dispatch_operation_flush_requests (self, operation, NULL, cd);
 569     }
 570 }
 571
 572 static void
 573 dispatcher_flush_outstanding_operations (EmpathyDispatcher *self,
 574                                          ConnectionData *cd)
 575 {
 576   GHashTableIter iter;
 577   gpointer value;
 578
 579   g_hash_table_iter_init (&iter, cd->outstanding_channels);
 580   while (g_hash_table_iter_next (&iter, NULL, &value))
 581     {
 582       EmpathyDispatchOperation *operation = EMPATHY_DISPATCH_OPERATION (value);
 583
 584       if (dispatcher_operation_can_start (self, operation, cd))
 585         {
 586           g_hash_table_iter_remove (&iter);
 587           dispatcher_start_dispatching (self, operation, cd);
 588         }
 589     }
 590 }
 591
 592 static void
 593 dispatcher_connection_new_channel (EmpathyDispatcher *self,
 594                                    TpConnection *connection,
 595                                    const gchar *object_path,
 596                                    const gchar *channel_type,
 597                                    guint handle_type,
 598                                    guint handle,
 599                                    GHashTable *properties,
 600                                    gboolean incoming)
 601 {
 602   EmpathyDispatcherPriv *priv = GET_PRIV (self);
 603   TpChannel         *channel;
 604   ConnectionData *cd;
 605   EmpathyDispatchOperation *operation;
 606   int i;
 607   /* Channel types we never want to dispatch because they're either deprecated
 608    * or can't sensibly be dispatch (e.g. channels that should always be
 609    * requested) */
 610   const char *blacklist[] = {
 611     TP_IFACE_CHANNEL_TYPE_CONTACT_LIST,
 612     TP_IFACE_CHANNEL_TYPE_TUBES,
 613     TP_IFACE_CHANNEL_TYPE_ROOM_LIST,
 614     NULL
 615   };
 616
 617   dispatcher_init_connection_if_needed (self, connection);
 618
 619   cd = g_hash_table_lookup (priv->connections, connection);
 620
 621   /* Don't bother with channels we have already dispatched or are dispatching
 622    * currently. This can happen when NewChannel(s) is fired after
 623    * RequestChannel/CreateChannel/EnsureChannel */
 624   if (g_hash_table_lookup (cd->dispatched_channels, object_path) != NULL)
 625     return;
 626
 627   if (g_hash_table_lookup (cd->dispatching_channels, object_path) != NULL)
 628     return;
 629
 630   /* Should never occur, but just in case a CM fires spurious NewChannel(s)
 631    * signals */
 632   if (g_hash_table_lookup (cd->outstanding_channels, object_path) != NULL)
 633     return;
 634
 635   /* Only pick up non-requested text and file channels. For all other it
 636    * doesn't make sense to handle it if we didn't request it. The same goes
 637    * for channels we discovered by the Channels property or ListChannels */
 638   if (!incoming && tp_strdiff (channel_type, TP_IFACE_CHANNEL_TYPE_TEXT)
 639         && tp_strdiff (channel_type, TP_IFACE_CHANNEL_TYPE_FILE_TRANSFER))
 640     {
 641       DEBUG ("Ignoring incoming channel of type %s on %s",
 642         channel_type, object_path);
 643       return;
 644     }
 645
 646   for (i = 0 ; blacklist[i] != NULL; i++)
 647     {
 648       if (!tp_strdiff (channel_type, blacklist[i]))
 649         {
 650           DEBUG ("Ignoring blacklisted channel type %s on %s",
 651             channel_type, object_path);
 652           return;
 653         }
 654     }
 655
 656   DEBUG ("New channel of type %s on %s", channel_type, object_path);
 657
 658   if (properties == NULL)
 659     channel = tp_channel_new (connection, object_path, channel_type,
 660       handle_type, handle, NULL);
 661   else
 662     channel = tp_channel_new_from_properties (connection, object_path,
 663       properties, NULL);
 664
 665   g_signal_connect (channel, "invalidated",
 666     G_CALLBACK (dispatcher_channel_invalidated_cb),
 667     self);
 668
 669   priv->channels = g_list_prepend (priv->channels, channel);
 670
 671   operation = empathy_dispatch_operation_new (connection, channel, NULL,
 672     incoming);
 673
 674   g_object_unref (channel);
 675
 676   if (incoming)
 677     {
 678       /* Request could either be by us or by a remote party. If there are no
 679        * outstanding requests for this channel type we can assume it's remote.
 680        * Otherwise we wait untill they are all satisfied */
 681       if (dispatcher_operation_can_start (self, operation, cd))
 682         dispatcher_start_dispatching (self, operation, cd);
 683       else
 684         g_hash_table_insert (cd->outstanding_channels,
 685           g_strdup (object_path), operation);
 686     }
 687   else
 688     {
 689       dispatcher_start_dispatching (self, operation, cd);
 690     }
 691 }
 692
 693 static void
 694 dispatcher_connection_new_channel_with_properties (
 695     EmpathyDispatcher *self,
 696     TpConnection *connection,
 697     const gchar *object_path,
 698     GHashTable *properties)
 699 {
 700   const gchar *channel_type;
 701   guint handle_type;
 702   guint handle;
 703   gboolean requested;
 704   gboolean valid;
 705
 706
 707   channel_type = tp_asv_get_string (properties,
 708     TP_IFACE_CHANNEL ".ChannelType");
 709   if (channel_type == NULL)
 710     {
 711       g_message ("%s had an invalid ChannelType property", object_path);
 712       return;
 713     }
 714
 715   handle_type = tp_asv_get_uint32 (properties,
 716     TP_IFACE_CHANNEL ".TargetHandleType", &valid);
 717   if (!valid)
 718     {
 719       g_message ("%s had an invalid TargetHandleType property", object_path);
 720       return;
 721     }
 722
 723   handle = tp_asv_get_uint32 (properties,
 724     TP_IFACE_CHANNEL ".TargetHandle", &valid);
 725   if (!valid)
 726     {
 727       g_message ("%s had an invalid TargetHandle property", object_path);
 728       return;
 729     }
 730
 731   /* We assume there is no channel dispather, so we're the only one dispatching
 732    * it. Which means that a requested channel it is outgoing one */
 733   requested = tp_asv_get_boolean (properties,
 734     TP_IFACE_CHANNEL ".Requested", &valid);
 735   if (!valid)
 736     {
 737       g_message ("%s had an invalid Requested property", object_path);
 738       requested = FALSE;
 739     }
 740
 741   dispatcher_connection_new_channel (self, connection,
 742     object_path, channel_type, handle_type, handle, properties, !requested);
 743 }
 744
 745 static void
 746 dispatcher_connection_got_all (TpProxy *proxy,
 747                                GHashTable *properties,
 748                                const GError *error,
 749                                gpointer user_data,
 750                                GObject *object)
 751 {
 752   EmpathyDispatcher *self = EMPATHY_DISPATCHER (object);
 753   EmpathyDispatcherPriv *priv = GET_PRIV (self);
 754   GPtrArray *requestable_channels;
 755   GPtrArray *existing_channels;
 756
 757   if (error) {
 758     DEBUG ("Error: %s", error->message);
 759     return;
 760   }
 761
 762   requestable_channels = tp_asv_get_boxed (properties,
 763     "RequestableChannelClasses", TP_ARRAY_TYPE_REQUESTABLE_CHANNEL_CLASS_LIST);
 764
 765   if (requestable_channels == NULL)
 766     DEBUG ("No RequestableChannelClasses property !?! on connection");
 767   else
 768     {
 769       ConnectionData *cd;
 770       GList *requests, *l;
 771       FindChannelRequest *request;
 772       GList *retval;
 773
 774       cd = g_hash_table_lookup (priv->connections, proxy);
 775       g_assert (cd != NULL);
 776
 777       cd->requestable_channels = g_boxed_copy (
 778         TP_ARRAY_TYPE_REQUESTABLE_CHANNEL_CLASS_LIST, requestable_channels);
 779
 780       requests = g_hash_table_lookup (priv->outstanding_classes_requests,
 781           proxy);
 782
 783       for (l = requests; l != NULL; l = l->next)
 784         {
 785           request = l->data;
 786
 787           retval = empathy_dispatcher_find_channel_classes (self,
 788               TP_CONNECTION (proxy), request->channel_type,
 789               request->handle_type, request->properties);
 790           request->callback (retval, request->user_data);
 791
 792           free_find_channel_request (request);
 793           g_list_free (retval);
 794         }
 795
 796       g_list_free (requests);
 797
 798       g_hash_table_remove (priv->outstanding_classes_requests, proxy);
 799     }
 800
 801   existing_channels = tp_asv_get_boxed (properties,
 802       "Channels", TP_ARRAY_TYPE_CHANNEL_DETAILS_LIST);
 803
 804   if (existing_channels != NULL)
 805     {
 806       guint idx;
 807
 808       for (idx = 0; idx < existing_channels->len; idx++)
 809         {
 810           GValueArray *values = g_ptr_array_index (existing_channels, idx);
 811           const gchar *object_path;
 812           GHashTable *props;
 813
 814           object_path = g_value_get_boxed (g_value_array_get_nth (values, 0));
 815           props = g_value_get_boxed (g_value_array_get_nth (values, 1));
 816
 817           if (tp_strdiff (tp_asv_get_string (props,
 818                       TP_IFACE_CHANNEL ".ChannelType"),
 819                   TP_IFACE_CHANNEL_TYPE_TEXT))
 820             continue;
 821
 822           dispatcher_connection_new_channel_with_properties (self,
 823               TP_CONNECTION (proxy), object_path, props);
 824         }
 825     }
 826 }
 827
 828 static void
 829 dispatcher_connection_advertise_capabilities_cb (TpConnection    *connection,
 830                                                  const GPtrArray *capabilities,
 831                                                  const GError    *error,
 832                                                  gpointer         user_data,
 833                                                  GObject         *self)
 834 {
 835   if (error)
 836     DEBUG ("Error: %s", error->message);
 837 }
 838
 839 static void
 840 dispatcher_init_connection_if_needed (EmpathyDispatcher *self,
 841     TpConnection *connection)
 842 {
 843   EmpathyDispatcherPriv *priv = GET_PRIV (self);
 844   GPtrArray   *capabilities;
 845   GType        cap_type;
 846   GValue       cap = {0, };
 847   const gchar *remove_ = NULL;
 848
 849   if (g_hash_table_lookup (priv->connections, connection) != NULL)
 850     return;
 851
 852   g_hash_table_insert (priv->connections, g_object_ref (connection),
 853     new_connection_data ());
 854
 855   g_signal_connect (connection, "invalidated",
 856     G_CALLBACK (dispatcher_connection_invalidated_cb), self);
 857
 858   if (tp_proxy_has_interface_by_id (TP_PROXY (connection),
 859       TP_IFACE_QUARK_CONNECTION_INTERFACE_REQUESTS))
 860     {
 861       tp_cli_dbus_properties_call_get_all (connection, -1,
 862         TP_IFACE_CONNECTION_INTERFACE_REQUESTS,
 863         dispatcher_connection_got_all,
 864         NULL, NULL, G_OBJECT (self));
 865     }
 866
 867   /* Advertise VoIP capabilities */
 868   capabilities = g_ptr_array_sized_new (1);
 869   cap_type = dbus_g_type_get_struct ("GValueArray", G_TYPE_STRING,
 870     G_TYPE_UINT, G_TYPE_INVALID);
 871   g_value_init (&cap, cap_type);
 872   g_value_take_boxed (&cap, dbus_g_type_specialized_construct (cap_type));
 873   dbus_g_type_struct_set (&cap,
 874         0, TP_IFACE_CHANNEL_TYPE_STREAMED_MEDIA,
 875         1, TP_CHANNEL_MEDIA_CAPABILITY_AUDIO |
 876            TP_CHANNEL_MEDIA_CAPABILITY_VIDEO |
 877            TP_CHANNEL_MEDIA_CAPABILITY_NAT_TRAVERSAL_STUN  |
 878            TP_CHANNEL_MEDIA_CAPABILITY_NAT_TRAVERSAL_GTALK_P2P |
 879            TP_CHANNEL_MEDIA_CAPABILITY_NAT_TRAVERSAL_ICE_UDP,
 880            G_MAXUINT);
 881   g_ptr_array_add (capabilities, g_value_get_boxed (&cap));
 882
 883   tp_cli_connection_interface_capabilities_call_advertise_capabilities (
 884     connection, -1, capabilities, &remove_,
 885     dispatcher_connection_advertise_capabilities_cb,
 886     NULL, NULL, G_OBJECT (self));
 887
 888   g_value_unset (&cap);
 889   g_ptr_array_free (capabilities, TRUE);
 890 }
 891
 892 static void
 893 dispatcher_new_connection_cb (EmpathyAccountManager *manager,
 894                               TpConnection *connection,
 895                               EmpathyDispatcher *self)
 896 {
 897   dispatcher_init_connection_if_needed (self, connection);
 898 }
 899
 900 static void
 901 remove_idle_handlers (gpointer key,
 902                       gpointer value,
 903                       gpointer user_data)
 904 {
 905   guint source_id;
 906
 907   source_id = GPOINTER_TO_UINT (value);
 908   g_source_remove (source_id);
 909 }
 910
 911 static GObject *
 912 dispatcher_constructor (GType type,
 913                         guint n_construct_params,
 914                         GObjectConstructParam *construct_params)
 915 {
 916   GObject *retval;
 917   EmpathyDispatcherPriv *priv;
 918
 919   if (dispatcher != NULL)
 920     return g_object_ref (dispatcher);
 921
 922   retval = G_OBJECT_CLASS (empathy_dispatcher_parent_class)->constructor
 923     (type, n_construct_params, construct_params);
 924
 925   dispatcher = EMPATHY_DISPATCHER (retval);
 926   g_object_add_weak_pointer (retval, (gpointer) &dispatcher);
 927
 928   priv = GET_PRIV (dispatcher);
 929
 930   if (priv->handler == NULL)
 931     priv->handler = empathy_handler_new (NULL, NULL, NULL);
 932
 933   empathy_handler_set_handle_channels_func (priv->handler,
 934     empathy_dispatcher_handle_channels,
 935     dispatcher);
 936
 937   empathy_handler_set_channels_func (priv->handler,
 938     empathy_dispatcher_get_channels,
 939     dispatcher);
 940
 941   return retval;
 942 }
 943
 944 static void
 945 dispatcher_dispose (GObject *object)
 946 {
 947   EmpathyDispatcherPriv *priv = GET_PRIV (object);
 948   GHashTableIter iter;
 949   gpointer connection;
 950   GList *l;
 951
 952   if (priv->dispose_has_run)
 953     return;
 954
 955   priv->dispose_has_run = TRUE;
 956
 957   for (l = priv->handlers ; l != NULL; l = g_list_next (l))
 958     g_object_unref (G_OBJECT (l->data));
 959
 960   g_list_free (priv->handlers);
 961   priv->handlers = NULL;
 962
 963   if (priv->handler != NULL)
 964     g_object_unref (priv->handler);
 965   priv->handler = NULL;
 966
 967   g_hash_table_iter_init (&iter, priv->connections);
 968   while (g_hash_table_iter_next (&iter, &connection, NULL))
 969     {
 970       g_signal_handlers_disconnect_by_func (connection,
 971           dispatcher_connection_invalidated_cb, object);
 972     }
 973
 974   g_hash_table_destroy (priv->connections);
 975   priv->connections = NULL;
 976
 977   G_OBJECT_CLASS (empathy_dispatcher_parent_class)->dispose (object);
 978 }
 979
 980 static void
 981 dispatcher_finalize (GObject *object)
 982 {
 983   EmpathyDispatcherPriv *priv = GET_PRIV (object);
 984   GList *l;
 985   GHashTableIter iter;
 986   gpointer connection;
 987   GList *list;
 988
 989   if (priv->request_channel_class_async_ids != NULL)
 990     {
 991       g_hash_table_foreach (priv->request_channel_class_async_ids,
 992         remove_idle_handlers, NULL);
 993       g_hash_table_destroy (priv->request_channel_class_async_ids);
 994     }
 995
 996   g_signal_handlers_disconnect_by_func (priv->account_manager,
 997       dispatcher_new_connection_cb, object);
 998
 999   for (l = priv->channels; l; l = l->next)
1000     {
1001       g_signal_handlers_disconnect_by_func (l->data,
1002           dispatcher_channel_invalidated_cb, object);
1003     }
1004
1005   g_list_free (priv->channels);
1006
1007   g_hash_table_iter_init (&iter, priv->outstanding_classes_requests);
1008   while (g_hash_table_iter_next (&iter, &connection, (gpointer *) &list))
1009     {
1010       g_list_foreach (list, (GFunc) free_find_channel_request, NULL);
1011       g_list_free (list);
1012     }
1013
1014   g_object_unref (priv->account_manager);
1015
1016   g_hash_table_destroy (priv->outstanding_classes_requests);
1017 }
1018
1019 static void
1020 dispatcher_set_property (GObject *object,
1021   guint property_id,
1022   const GValue *value,
1023   GParamSpec *pspec)
1024 {
1025   EmpathyDispatcher *self = EMPATHY_DISPATCHER (object);
1026   EmpathyDispatcherPriv *priv = GET_PRIV (self);
1027
1028   switch (property_id)
1029     {
1030       case PROP_HANDLER:
1031         priv->handler = g_value_dup_object (value);
1032         break;
1033       default:
1034         G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
1035         break;
1036     }
1037 }
1038
1039 static void
1040 dispatcher_get_property (GObject *object,
1041   guint property_id,
1042   GValue *value,
1043   GParamSpec *pspec)
1044 {
1045   EmpathyDispatcher *self = EMPATHY_DISPATCHER (object);
1046   EmpathyDispatcherPriv *priv = GET_PRIV (self);
1047
1048   switch (property_id)
1049     {
1050       case PROP_HANDLER:
1051         g_value_set_object (value, priv->handler);
1052         break;
1053       default:
1054         G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
1055         break;
1056     }
1057 }
1058
1059 static void
1060 empathy_dispatcher_class_init (EmpathyDispatcherClass *klass)
1061 {
1062   GObjectClass *object_class = G_OBJECT_CLASS (klass);
1063   GParamSpec *param_spec;
1064
1065   object_class->dispose = dispatcher_dispose;
1066   object_class->finalize = dispatcher_finalize;
1067   object_class->constructor = dispatcher_constructor;
1068
1069   object_class->get_property = dispatcher_get_property;
1070   object_class->set_property = dispatcher_set_property;
1071
1072   param_spec = g_param_spec_object ("handler", "handler",
1073     "The main Telepathy Client Hander object",
1074     EMPATHY_TYPE_HANDLER,
1075     G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS | G_PARAM_CONSTRUCT_ONLY);
1076   g_object_class_install_property (object_class,
1077     PROP_HANDLER, param_spec);
1078
1079   signals[OBSERVE] =
1080     g_signal_new ("observe",
1081       G_TYPE_FROM_CLASS (klass),
1082       G_SIGNAL_RUN_LAST,
1083       0,
1084       NULL, NULL,
1085       g_cclosure_marshal_VOID__OBJECT,
1086       G_TYPE_NONE,
1087       1, EMPATHY_TYPE_DISPATCH_OPERATION);
1088
1089   signals[APPROVE] =
1090     g_signal_new ("approve",
1091       G_TYPE_FROM_CLASS (klass),
1092       G_SIGNAL_RUN_LAST,
1093       0,
1094       NULL, NULL,
1095       g_cclosure_marshal_VOID__OBJECT,
1096       G_TYPE_NONE,
1097       1, EMPATHY_TYPE_DISPATCH_OPERATION);
1098
1099   signals[DISPATCH] =
1100     g_signal_new ("dispatch",
1101       G_TYPE_FROM_CLASS (klass),
1102       G_SIGNAL_RUN_LAST,
1103       0,
1104       NULL, NULL,
1105       g_cclosure_marshal_VOID__OBJECT,
1106       G_TYPE_NONE,
1107       1, EMPATHY_TYPE_DISPATCH_OPERATION);
1108
1109
1110   g_type_class_add_private (object_class, sizeof (EmpathyDispatcherPriv));
1111 }
1112
1113 static void
1114 empathy_dispatcher_init (EmpathyDispatcher *self)
1115 {
1116   GList *connections, *l;
1117   EmpathyDispatcherPriv *priv = G_TYPE_INSTANCE_GET_PRIVATE (self,
1118     EMPATHY_TYPE_DISPATCHER, EmpathyDispatcherPriv);
1119
1120   self->priv = priv;
1121   priv->account_manager = empathy_account_manager_dup_singleton ();
1122
1123   g_signal_connect (priv->account_manager, "new-connection",
1124     G_CALLBACK (dispatcher_new_connection_cb),
1125     self);
1126
1127   priv->connections = g_hash_table_new_full (g_direct_hash, g_direct_equal,
1128     g_object_unref, (GDestroyNotify) free_connection_data);
1129
1130   priv->outstanding_classes_requests = g_hash_table_new_full (g_direct_hash,
1131     g_direct_equal, g_object_unref, NULL);
1132
1133   priv->channels = NULL;
1134
1135   connections = empathy_account_manager_dup_connections (
1136       priv->account_manager);
1137   for (l = connections; l; l = l->next)
1138     {
1139       dispatcher_new_connection_cb (priv->account_manager, l->data,
1140           self);
1141       g_object_unref (l->data);
1142     }
1143   g_list_free (connections);
1144
1145   priv->request_channel_class_async_ids = g_hash_table_new (g_direct_hash,
1146     g_direct_equal);
1147 }
1148
1149 EmpathyDispatcher *
1150 empathy_dispatcher_new (const gchar *name,
1151   GPtrArray *filters,
1152   GStrv capabilities)
1153 {
1154   EmpathyHandler *handler;
1155   EmpathyDispatcher *ret;
1156
1157   g_assert (dispatcher == NULL);
1158   handler = empathy_handler_new (name, filters, capabilities);
1159
1160   ret = EMPATHY_DISPATCHER (
1161     g_object_new (EMPATHY_TYPE_DISPATCHER,
1162       "handler", handler,
1163       NULL));
1164   g_object_unref (handler);
1165
1166   return ret;
1167 }
1168
1169 EmpathyDispatcher *
1170 empathy_dispatcher_dup_singleton (void)
1171 {
1172   return EMPATHY_DISPATCHER (g_object_new (EMPATHY_TYPE_DISPATCHER, NULL));
1173 }
1174
1175 static void
1176 dispatcher_request_failed (EmpathyDispatcher *self,
1177                            DispatcherRequestData *request_data,
1178                            const GError *error)
1179 {
1180   EmpathyDispatcherPriv *priv = GET_PRIV (self);
1181   ConnectionData *conn_data;
1182
1183   conn_data = g_hash_table_lookup (priv->connections,
1184       request_data->connection);
1185   if (request_data->cb != NULL)
1186     request_data->cb (NULL, error, request_data->user_data);
1187
1188   if (conn_data != NULL)
1189     {
1190       conn_data->outstanding_requests =
1191           g_list_remove (conn_data->outstanding_requests, request_data);
1192     }
1193   /* else Connection has been invalidated */
1194
1195   free_dispatcher_request_data (request_data);
1196 }
1197
1198 static void
1199 dispatcher_connection_new_requested_channel (EmpathyDispatcher *self,
1200   DispatcherRequestData *request_data,
1201   const gchar *object_path,
1202   GHashTable *properties,
1203   const GError *error)
1204 {
1205   EmpathyDispatcherPriv *priv = GET_PRIV (self);
1206   EmpathyDispatchOperation *operation = NULL;
1207   ConnectionData *conn_data;
1208
1209   conn_data = g_hash_table_lookup (priv->connections,
1210     request_data->connection);
1211
1212   if (error)
1213     {
1214       DEBUG ("Channel request failed: %s", error->message);
1215
1216       dispatcher_request_failed (self, request_data, error);
1217
1218       goto out;
1219     }
1220
1221   operation = g_hash_table_lookup (conn_data->outstanding_channels,
1222     object_path);
1223
1224   if (operation != NULL)
1225     g_hash_table_remove (conn_data->outstanding_channels, object_path);
1226   else
1227     operation = g_hash_table_lookup (conn_data->dispatching_channels,
1228         object_path);
1229
1230   if (operation == NULL)
1231     {
1232       DispatchData *data = g_hash_table_lookup (conn_data->dispatched_channels,
1233         object_path);
1234
1235       if (data != NULL)
1236         {
1237           operation = empathy_dispatch_operation_new_with_wrapper (
1238             request_data->connection,
1239             data->channel, request_data->contact, FALSE,
1240             data->channel_wrapper);
1241         }
1242       else
1243         {
1244           TpChannel *channel;
1245
1246           if (properties != NULL)
1247             channel = tp_channel_new_from_properties (request_data->connection,
1248               object_path, properties, NULL);
1249           else
1250             channel = tp_channel_new (request_data->connection, object_path,
1251               request_data->channel_type, request_data->handle_type,
1252               request_data->handle, NULL);
1253
1254           g_signal_connect (channel, "invalidated",
1255             G_CALLBACK (dispatcher_channel_invalidated_cb),
1256             request_data->dispatcher);
1257
1258           priv->channels = g_list_prepend (priv->channels, channel);
1259
1260           operation = empathy_dispatch_operation_new (request_data->connection,
1261              channel, request_data->contact, FALSE);
1262           g_object_unref (channel);
1263         }
1264     }
1265   else
1266     {
1267       /* Already existed set potential extra information */
1268       g_object_set (G_OBJECT (operation),
1269         "contact", request_data->contact,
1270         NULL);
1271     }
1272
1273   request_data->operation = operation;
1274
1275   /* (pre)-approve this right away as we requested it
1276    * This might cause the channel to be claimed, in which case the operation
1277    * will disappear. So ref it, and check the status before starting the
1278    * dispatching */
1279
1280   g_object_ref (operation);
1281   empathy_dispatch_operation_approve (operation);
1282
1283    if (empathy_dispatch_operation_get_status (operation) <
1284      EMPATHY_DISPATCHER_OPERATION_STATE_APPROVING)
1285       dispatcher_start_dispatching (request_data->dispatcher, operation,
1286           conn_data);
1287
1288   g_object_unref (operation);
1289
1290 out:
1291   dispatcher_flush_outstanding_operations (request_data->dispatcher,
1292     conn_data);
1293 }
1294
1295 static void
1296 dispatcher_request_channel_cb (TpConnection *connection,
1297                                const gchar  *object_path,
1298                                const GError *error,
1299                                gpointer user_data,
1300                                GObject *weak_object)
1301 {
1302   DispatcherRequestData *request_data = (DispatcherRequestData *) user_data;
1303   EmpathyDispatcher *self =
1304       EMPATHY_DISPATCHER (request_data->dispatcher);
1305
1306   request_data->pending_call = NULL;
1307
1308   dispatcher_connection_new_requested_channel (self,
1309     request_data, object_path, NULL, error);
1310 }
1311
1312 static void
1313 dispatcher_request_channel (DispatcherRequestData *request_data)
1314 {
1315   if (tp_proxy_has_interface_by_id (TP_PROXY (request_data->connection),
1316       TP_IFACE_QUARK_CONNECTION_INTERFACE_REQUESTS))
1317     {
1318       /* Extend the request_data to be a valid request */
1319       g_assert (request_data->request == NULL);
1320       request_data->request = tp_asv_new (
1321         TP_IFACE_CHANNEL ".ChannelType",
1322           G_TYPE_STRING, request_data->channel_type,
1323         TP_IFACE_CHANNEL ".TargetHandleType",
1324           G_TYPE_UINT, request_data->handle_type,
1325         NULL);
1326
1327       if (request_data->handle_type != TP_HANDLE_TYPE_NONE)
1328         tp_asv_set_uint32 (request_data->request,
1329           TP_IFACE_CHANNEL ".TargetHandle", request_data->handle);
1330
1331       empathy_dispatcher_call_create_or_ensure_channel (
1332         request_data->dispatcher, request_data);
1333     }
1334   else
1335     {
1336       request_data->pending_call = tp_cli_connection_call_request_channel (
1337         request_data->connection, -1,
1338         request_data->channel_type,
1339         request_data->handle_type,
1340         request_data->handle,
1341         TRUE, dispatcher_request_channel_cb,
1342         request_data, NULL, NULL);
1343     }
1344 }
1345
1346 void
1347 empathy_dispatcher_chat_with_contact (EmpathyContact *contact,
1348                                       EmpathyDispatcherRequestCb *callback,
1349                                       gpointer user_data)
1350 {
1351   EmpathyDispatcher *self;
1352   EmpathyDispatcherPriv *priv;
1353   TpConnection *connection;
1354   ConnectionData *connection_data;
1355   DispatcherRequestData *request_data;
1356
1357   g_return_if_fail (EMPATHY_IS_CONTACT (contact));
1358
1359   self = empathy_dispatcher_dup_singleton ();
1360   priv = GET_PRIV (self);
1361
1362   connection = empathy_contact_get_connection (contact);
1363   connection_data = g_hash_table_lookup (priv->connections, connection);
1364
1365   /* The contact handle might not be known yet */
1366   request_data = new_dispatcher_request_data (self, connection,
1367     TP_IFACE_CHANNEL_TYPE_TEXT, TP_HANDLE_TYPE_CONTACT,
1368     empathy_contact_get_handle (contact), NULL, contact, callback, user_data);
1369   request_data->should_ensure = TRUE;
1370
1371   connection_data->outstanding_requests = g_list_prepend
1372     (connection_data->outstanding_requests, request_data);
1373
1374   dispatcher_request_channel (request_data);
1375
1376   g_object_unref (self);
1377 }
1378
1379 typedef struct
1380 {
1381   EmpathyDispatcher *dispatcher;
1382   EmpathyDispatcherRequestCb *callback;
1383   gpointer user_data;
1384 } ChatWithContactIdData;
1385
1386 static void
1387 dispatcher_chat_with_contact_id_cb (EmpathyTpContactFactory *factory,
1388                                     EmpathyContact          *contact,
1389                                     const GError            *error,
1390                                     gpointer                 user_data,
1391                                     GObject                 *weak_object)
1392 {
1393   ChatWithContactIdData *data = user_data;
1394
1395   if (error)
1396     {
1397       /* FIXME: Should call data->callback with the error */
1398       DEBUG ("Error: %s", error->message);
1399     }
1400   else
1401     {
1402       empathy_dispatcher_chat_with_contact (contact, data->callback,
1403           data->user_data);
1404     }
1405
1406   g_object_unref (data->dispatcher);
1407   g_slice_free (ChatWithContactIdData, data);
1408 }
1409
1410 void
1411 empathy_dispatcher_chat_with_contact_id (TpConnection *connection,
1412                                          const gchar *contact_id,
1413                                          EmpathyDispatcherRequestCb *callback,
1414                                          gpointer user_data)
1415 {
1416   EmpathyDispatcher *self;
1417   EmpathyTpContactFactory *factory;
1418   ChatWithContactIdData *data;
1419
1420   g_return_if_fail (TP_IS_CONNECTION (connection));
1421   g_return_if_fail (!EMP_STR_EMPTY (contact_id));
1422
1423   self = empathy_dispatcher_dup_singleton ();
1424   factory = empathy_tp_contact_factory_dup_singleton (connection);
1425   data = g_slice_new0 (ChatWithContactIdData);
1426   data->dispatcher = self;
1427   data->callback = callback;
1428   data->user_data = user_data;
1429   empathy_tp_contact_factory_get_from_id (factory, contact_id,
1430       dispatcher_chat_with_contact_id_cb, data, NULL, NULL);
1431
1432   g_object_unref (factory);
1433 }
1434
1435 static void
1436 dispatcher_request_handles_cb (TpConnection *connection,
1437                                const GArray *handles,
1438                                const GError *error,
1439                                gpointer user_data,
1440                                GObject *object)
1441 {
1442   DispatcherRequestData *request_data = (DispatcherRequestData *) user_data;
1443
1444   request_data->pending_call = NULL;
1445
1446   if (error != NULL)
1447     {
1448       EmpathyDispatcher *self = EMPATHY_DISPATCHER (object);
1449       EmpathyDispatcherPriv *priv = GET_PRIV (self);
1450       ConnectionData *cd;
1451
1452       cd = g_hash_table_lookup (priv->connections, request_data->connection);
1453
1454       if (request_data->cb)
1455         request_data->cb (NULL, error, request_data->user_data);
1456
1457       cd->outstanding_requests = g_list_remove (cd->outstanding_requests,
1458         request_data);
1459
1460       free_dispatcher_request_data (request_data);
1461
1462       dispatcher_flush_outstanding_operations (self, cd);
1463       return;
1464     }
1465
1466   request_data->handle = g_array_index (handles, guint, 0);
1467   dispatcher_request_channel (request_data);
1468 }
1469
1470 void
1471 empathy_dispatcher_join_muc (TpConnection *connection,
1472                              const gchar *roomname,
1473                              EmpathyDispatcherRequestCb *callback,
1474                              gpointer user_data)
1475 {
1476   EmpathyDispatcher *self;
1477   EmpathyDispatcherPriv *priv;
1478   DispatcherRequestData *request_data;
1479   ConnectionData *connection_data;
1480   const gchar *names[] = { roomname, NULL };
1481
1482   g_return_if_fail (TP_IS_CONNECTION (connection));
1483   g_return_if_fail (!EMP_STR_EMPTY (roomname));
1484
1485   self = empathy_dispatcher_dup_singleton ();
1486   priv = GET_PRIV (self);
1487
1488   connection_data = g_hash_table_lookup (priv->connections, connection);
1489
1490   /* Don't know the room handle yet */
1491   request_data  = new_dispatcher_request_data (self, connection,
1492     TP_IFACE_CHANNEL_TYPE_TEXT, TP_HANDLE_TYPE_ROOM, 0, NULL,
1493     NULL, callback, user_data);
1494
1495   connection_data->outstanding_requests = g_list_prepend
1496     (connection_data->outstanding_requests, request_data);
1497
1498   request_data->pending_call = tp_cli_connection_call_request_handles (
1499     connection, -1,
1500     TP_HANDLE_TYPE_ROOM, names,
1501     dispatcher_request_handles_cb, request_data, NULL, NULL);
1502
1503   g_object_unref (self);
1504 }
1505
1506 static void
1507 dispatcher_create_channel_cb (TpConnection *connect,
1508                               const gchar *object_path,
1509                               GHashTable *properties,
1510                               const GError *error,
1511                               gpointer user_data,
1512                               GObject *weak_object)
1513 {
1514   DispatcherRequestData *request_data = (DispatcherRequestData *) user_data;
1515   EmpathyDispatcher *self =
1516       EMPATHY_DISPATCHER (request_data->dispatcher);
1517
1518   request_data->pending_call = NULL;
1519
1520   dispatcher_connection_new_requested_channel (self,
1521     request_data, object_path, properties, error);
1522 }
1523
1524 static void
1525 dispatcher_ensure_channel_cb (TpConnection *connect,
1526                               gboolean is_ours,
1527                               const gchar *object_path,
1528                               GHashTable *properties,
1529                               const GError *error,
1530                               gpointer user_data,
1531                               GObject *weak_object)
1532 {
1533   DispatcherRequestData *request_data = (DispatcherRequestData *) user_data;
1534   EmpathyDispatcher *self =
1535       EMPATHY_DISPATCHER (request_data->dispatcher);
1536
1537   request_data->pending_call = NULL;
1538
1539   dispatcher_connection_new_requested_channel (self,
1540     request_data, object_path, properties, error);
1541 }
1542
1543 static void
1544 empathy_dispatcher_call_create_or_ensure_channel (
1545     EmpathyDispatcher *self,
1546     DispatcherRequestData *request_data)
1547 {
1548   if (request_data->should_ensure)
1549     {
1550       request_data->pending_call =
1551           tp_cli_connection_interface_requests_call_ensure_channel (
1552           request_data->connection, -1,
1553           request_data->request, dispatcher_ensure_channel_cb,
1554           request_data, NULL, NULL);
1555     }
1556   else
1557     {
1558       request_data->pending_call =
1559           tp_cli_connection_interface_requests_call_create_channel (
1560           request_data->connection, -1,
1561           request_data->request, dispatcher_create_channel_cb,
1562           request_data, NULL, NULL);
1563     }
1564 }
1565
1566 void
1567 empathy_dispatcher_create_channel (EmpathyDispatcher *self,
1568                                    TpConnection *connection,
1569                                    GHashTable *request,
1570                                    EmpathyDispatcherRequestCb *callback,
1571                                    gpointer user_data)
1572 {
1573   EmpathyDispatcherPriv *priv = GET_PRIV (self);
1574   ConnectionData *connection_data;
1575   DispatcherRequestData *request_data;
1576   const gchar *channel_type;
1577   guint handle_type;
1578   guint handle;
1579   gboolean valid;
1580
1581   g_return_if_fail (EMPATHY_IS_DISPATCHER (self));
1582   g_return_if_fail (TP_IS_CONNECTION (connection));
1583   g_return_if_fail (request != NULL);
1584
1585   connection_data = g_hash_table_lookup (priv->connections, connection);
1586   g_assert (connection_data != NULL);
1587
1588   channel_type = tp_asv_get_string (request, TP_IFACE_CHANNEL ".ChannelType");
1589
1590   handle_type = tp_asv_get_uint32 (request,
1591     TP_IFACE_CHANNEL ".TargetHandleType", &valid);
1592   if (!valid)
1593     handle_type = TP_UNKNOWN_HANDLE_TYPE;
1594
1595   handle = tp_asv_get_uint32 (request, TP_IFACE_CHANNEL ".TargetHandle", NULL);
1596
1597   request_data  = new_dispatcher_request_data (self, connection,
1598     channel_type, handle_type, handle, request,
1599     NULL, callback, user_data);
1600
1601   connection_data->outstanding_requests = g_list_prepend
1602     (connection_data->outstanding_requests, request_data);
1603
1604   empathy_dispatcher_call_create_or_ensure_channel (self, request_data);
1605 }
1606
1607 static gboolean
1608 channel_class_matches (GValueArray *class,
1609                        const char *channel_type,
1610                        guint handle_type,
1611                        GArray *fixed_properties)
1612 {
1613   GHashTable *fprops;
1614   GValue *v;
1615   const char *c_type;
1616   guint h_type;
1617   gboolean valid;
1618
1619   v = g_value_array_get_nth (class, 0);
1620
1621   /* if the class doesn't match channel type discard it. */
1622   fprops = g_value_get_boxed (v);
1623   c_type = tp_asv_get_string (fprops, TP_IFACE_CHANNEL ".ChannelType");
1624
1625   if (tp_strdiff (channel_type, c_type))
1626     return FALSE;
1627
1628   /* we have the right channel type, see if the handle type matches */
1629   h_type = tp_asv_get_uint32 (fprops,
1630                               TP_IFACE_CHANNEL ".TargetHandleType", &valid);
1631
1632   if (!valid || handle_type != h_type)
1633     return FALSE;
1634
1635   if (fixed_properties != NULL)
1636     {
1637       gpointer h_key, h_val;
1638       guint idx;
1639       GHashTableIter iter;
1640       gboolean found;
1641
1642       g_hash_table_iter_init (&iter, fprops);
1643
1644       while (g_hash_table_iter_next (&iter, &h_key, &h_val))
1645         {
1646           /* discard ChannelType and TargetHandleType, as we already
1647            * checked them.
1648            */
1649           if (!tp_strdiff ((char *) h_key, TP_IFACE_CHANNEL ".ChannelType") ||
1650               !tp_strdiff
1651                 ((char *) h_key, TP_IFACE_CHANNEL ".TargetHandleType"))
1652             continue;
1653
1654           found = FALSE;
1655
1656           for (idx = 0; idx < fixed_properties->len; idx++)
1657             {
1658               /* if |key| doesn't exist in |fixed_properties|, discard
1659                * the class.
1660                */
1661               if (!tp_strdiff
1662                     ((char *) h_key,
1663                      g_array_index (fixed_properties, char *, idx)))
1664                 {
1665                   found = TRUE;
1666                   /* exit the for() loop */
1667                   break;
1668                 }
1669             }
1670
1671           if (!found)
1672             return FALSE;
1673         }
1674     }
1675   else
1676     {
1677       /* if no fixed_properties are specified, discard the classes
1678        * with some fixed properties other than the two we already
1679        * checked.
1680        */
1681       if (g_hash_table_size (fprops) > 2)
1682         return FALSE;
1683     }
1684
1685   return TRUE;
1686 }
1687
1688 static GList *
1689 empathy_dispatcher_find_channel_classes (EmpathyDispatcher *self,
1690                                          TpConnection *connection,
1691                                          const gchar *channel_type,
1692                                          guint handle_type,
1693                                          GArray *fixed_properties)
1694 {
1695   EmpathyDispatcherPriv *priv = GET_PRIV (self);
1696   GValueArray *class;
1697   GPtrArray *classes;
1698   GList *matching_classes;
1699   guint i;
1700   ConnectionData *cd;
1701
1702   g_return_val_if_fail (channel_type != NULL, NULL);
1703   g_return_val_if_fail (handle_type != 0, NULL);
1704
1705   cd = g_hash_table_lookup (priv->connections, connection);
1706
1707   if (cd == NULL)
1708     return NULL;
1709
1710   classes = cd->requestable_channels;
1711   if (classes == NULL)
1712     return NULL;
1713
1714   matching_classes = NULL;
1715
1716   for (i = 0; i < classes->len; i++)
1717     {
1718       class = g_ptr_array_index (classes, i);
1719
1720       if (!channel_class_matches
1721           (class, channel_type, handle_type, fixed_properties))
1722         continue;
1723
1724       matching_classes = g_list_prepend (matching_classes, class);
1725     }
1726
1727   return matching_classes;
1728 }
1729
1730 static gboolean
1731 find_channel_class_idle_cb (gpointer user_data)
1732 {
1733   GList *retval;
1734   GList *requests;
1735   FindChannelRequest *request = user_data;
1736   ConnectionData *cd;
1737   gboolean is_ready = TRUE;
1738   EmpathyDispatcherPriv *priv = GET_PRIV (request->dispatcher);
1739
1740   g_hash_table_remove (priv->request_channel_class_async_ids, request);
1741
1742   cd = g_hash_table_lookup (priv->connections, request->connection);
1743
1744   if (cd == NULL)
1745     is_ready = FALSE;
1746   else if (cd->requestable_channels == NULL)
1747     is_ready = FALSE;
1748
1749   if (is_ready)
1750     {
1751       retval = empathy_dispatcher_find_channel_classes (request->dispatcher,
1752           request->connection, request->channel_type, request->handle_type,
1753           request->properties);
1754
1755       request->callback (retval, request->user_data);
1756       free_find_channel_request (request);
1757       g_list_free (retval);
1758
1759       return FALSE;
1760     }
1761
1762   requests = g_hash_table_lookup (priv->outstanding_classes_requests,
1763       request->connection);
1764   requests = g_list_prepend (requests, request);
1765
1766   g_hash_table_insert (priv->outstanding_classes_requests,
1767       request->connection, requests);
1768
1769   return FALSE;
1770 }
1771
1772 static GArray *
1773 setup_varargs (va_list var_args,
1774                const char *channel_namespace,
1775                const char *first_property_name)
1776 {
1777   const char *name;
1778   char *name_full;
1779   GArray *properties;
1780
1781   if (first_property_name == NULL)
1782     return NULL;
1783
1784   name = first_property_name;
1785   properties = g_array_new (TRUE, TRUE, sizeof (char *));
1786
1787   while (name != NULL)
1788     {
1789       name_full = g_strdup (name);
1790       properties = g_array_append_val (properties, name_full);
1791       name = va_arg (var_args, char *);
1792     }
1793
1794   return properties;
1795 }
1796
1797 /**
1798  * empathy_dispatcher_find_requestable_channel_classes:
1799  * @dispatcher: an #EmpathyDispatcher
1800  * @connection: a #TpConnection
1801  * @channel_type: a string identifying the type of the channel to lookup
1802  * @handle_type: the handle type for the channel
1803  * @first_property_name: %NULL, or the name of the first fixed property,
1804  * followed optionally by more names, followed by %NULL.
1805  *
1806  * Returns all the channel classes that a client can request for the connection
1807  * @connection, of the type identified by @channel_type, @handle_type and the
1808  * fixed properties list.
1809  * The classes which are compatible with a fixed properties list (i.e. those
1810  * that will be returned by this function) are intended as those that do not
1811  * contain any fixed property other than those in the list; note that this
1812  * doesn't guarantee that all the classes compatible with the list will contain
1813  * all the requested fixed properties, so the clients will have to filter
1814  * the returned list themselves.
1815  * If @first_property_name is %NULL, only the classes with no other fixed
1816  * properties than ChannelType and TargetHandleType will be returned.
1817  * Note that this function may return %NULL without performing any lookup if
1818  * @connection is not ready. To ensure that @connection is always ready,
1819  * use the empathy_dispatcher_find_requestable_channel_classes_async() variant.
1820  *
1821  * Return value: a #GList of #GValueArray objects, where the first element in
1822  * the array is a #GHashTable of the fixed properties, and the second is
1823  * a #GStrv of the allowed properties for the class. The list should be free'd
1824  * with g_list_free() when done, but the objects inside the list are owned
1825  * by the #EmpathyDispatcher and must not be modified.
1826  */
1827 GList *
1828 empathy_dispatcher_find_requestable_channel_classes
1829                                  (EmpathyDispatcher *self,
1830                                   TpConnection *connection,
1831                                   const gchar *channel_type,
1832                                   guint handle_type,
1833                                   const char *first_property_name,
1834                                   ...)
1835 {
1836   va_list var_args;
1837   GArray *properties;
1838   EmpathyDispatcherPriv *priv;
1839   GList *retval;
1840   guint idx;
1841   char *str;
1842
1843   g_return_val_if_fail (EMPATHY_IS_DISPATCHER (self), NULL);
1844   g_return_val_if_fail (TP_IS_CONNECTION (connection), NULL);
1845   g_return_val_if_fail (channel_type != NULL, NULL);
1846   g_return_val_if_fail (handle_type != 0, NULL);
1847
1848   priv = GET_PRIV (self);
1849
1850   va_start (var_args, first_property_name);
1851
1852   properties = setup_varargs (var_args, channel_type, first_property_name);
1853
1854   va_end (var_args);
1855
1856   retval = empathy_dispatcher_find_channel_classes (self, connection,
1857     channel_type, handle_type, properties);
1858
1859   if (properties != NULL)
1860     {
1861       /* free the properties array */
1862       for (idx = 0; idx < properties->len ; idx++)
1863         {
1864           str = g_array_index (properties, char *, idx);
1865           g_free (str);
1866         }
1867
1868       g_array_free (properties, TRUE);
1869     }
1870
1871   return retval;
1872 }
1873
1874 /**
1875  * empathy_dispatcher_find_requestable_channel_classes_async:
1876  * @dispatcher: an #EmpathyDispatcher
1877  * @connection: a #TpConnection
1878  * @channel_type: a string identifying the type of the channel to lookup
1879  * @handle_type: the handle type for the channel
1880  * @callback: the callback to call when @connection is ready
1881  * @user_data: the user data to pass to @callback
1882  * @first_property_name: %NULL, or the name of the first fixed property,
1883  * followed optionally by more names, followed by %NULL.
1884  *
1885  * Please see the documentation of
1886  * empathy_dispatcher_find_requestable_channel_classes() for a detailed
1887  * description of this function.
1888  */
1889 void
1890 empathy_dispatcher_find_requestable_channel_classes_async
1891                                  (EmpathyDispatcher *self,
1892                                   TpConnection *connection,
1893                                   const gchar *channel_type,
1894                                   guint handle_type,
1895                                   EmpathyDispatcherFindChannelClassCb callback,
1896                                   gpointer user_data,
1897                                   const char *first_property_name,
1898                                   ...)
1899 {
1900   va_list var_args;
1901   GArray *properties;
1902   FindChannelRequest *request;
1903   EmpathyDispatcherPriv *priv;
1904   guint source_id;
1905
1906   g_return_if_fail (EMPATHY_IS_DISPATCHER (self));
1907   g_return_if_fail (TP_IS_CONNECTION (connection));
1908   g_return_if_fail (channel_type != NULL);
1909   g_return_if_fail (handle_type != 0);
1910
1911   priv = GET_PRIV (self);
1912
1913   va_start (var_args, first_property_name);
1914
1915   properties = setup_varargs (var_args, channel_type, first_property_name);
1916
1917   va_end (var_args);
1918
1919   /* append another request for this connection */
1920   request = g_slice_new0 (FindChannelRequest);
1921   request->dispatcher = g_object_ref (self);
1922   request->channel_type = g_strdup (channel_type);
1923   request->handle_type = handle_type;
1924   request->connection = connection;
1925   request->callback = callback;
1926   request->user_data = user_data;
1927   request->properties = properties;
1928
1929   source_id = g_idle_add (find_channel_class_idle_cb, request);
1930
1931   g_hash_table_insert (priv->request_channel_class_async_ids,
1932     request, GUINT_TO_POINTER (source_id));
1933 }
1934
1935 static GList *
1936 empathy_dispatcher_get_channels (EmpathyHandler *handler,
1937   gpointer user_data)
1938 {
1939   EmpathyDispatcher *self = EMPATHY_DISPATCHER (user_data);
1940   EmpathyDispatcherPriv *priv = GET_PRIV (self);
1941
1942   return priv->channels;
1943 }
1944
1945 static gboolean
1946 empathy_dispatcher_handle_channels (EmpathyHandler *handler,
1947     const gchar *account_path,
1948     const gchar *connection_path,
1949     const GPtrArray *channels,
1950     const GPtrArray *requests_satisfied,
1951     guint64 timestamp,
1952     GHashTable *handler_info,
1953     gpointer user_data,
1954     GError **error)
1955 {
1956   EmpathyDispatcher *self = EMPATHY_DISPATCHER (user_data);
1957   EmpathyDispatcherPriv *priv = GET_PRIV (self);
1958   guint i;
1959   EmpathyAccount *account;
1960   TpConnection *connection;
1961
1962   account = empathy_account_manager_ensure_account (priv->account_manager,
1963     account_path);
1964   g_assert (account != NULL);
1965
1966   connection = empathy_account_get_connection_for_path (account,
1967       connection_path);
1968   if (connection == NULL)
1969     {
1970       g_set_error_literal (error, TP_ERRORS, TP_ERROR_INVALID_ARGUMENT,
1971         "Invalid connection argument");
1972       return FALSE;
1973     }
1974
1975   for (i = 0; i < channels->len ; i++)
1976     {
1977       GValueArray *arr = g_ptr_array_index (channels, i);
1978       const gchar *object_path;
1979       GHashTable *properties;
1980
1981       object_path = g_value_get_boxed (g_value_array_get_nth (arr, 0));
1982       properties = g_value_get_boxed (g_value_array_get_nth (arr, 1));
1983
1984       dispatcher_connection_new_channel_with_properties (self,
1985         connection, object_path, properties);
1986     }
1987
1988   return TRUE;
1989 }
1990
1991
1992 EmpathyHandler *
1993 empathy_dispatcher_add_handler (EmpathyDispatcher *self,
1994     const gchar *name,
1995     GPtrArray *filters,
1996     GStrv capabilities)
1997 {
1998   EmpathyDispatcherPriv *priv = GET_PRIV (self);
1999   EmpathyHandler *handler;
2000
2001   handler = empathy_handler_new (name, filters, capabilities);
2002   priv->handlers = g_list_prepend (priv->handlers, handler);
2003
2004   /* Only set the handle_channels function, the Channel property on the main
2005    * handler will always report all dispatched channels even if they came from
2006    * a different Handler */
2007   empathy_handler_set_handle_channels_func (handler,
2008     empathy_dispatcher_handle_channels, self);
2009
2010   return handler;
2011 }
2012
2013 void
2014 empathy_dispatcher_remove_handler (EmpathyDispatcher *self,
2015   EmpathyHandler *handler)
2016 {
2017   EmpathyDispatcherPriv *priv = GET_PRIV (self);
2018   GList *h;
2019
2020   h = g_list_find (priv->handlers, handler);
2021   g_return_if_fail (h != NULL);
2022
2023   priv->handlers = g_list_delete_link (priv->handlers, h);
2024
2025   g_object_unref (handler);
2026 }