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