libempathy-gtk/empathy-location-manager.c

   1 /*
   2  * Copyright (C) 2009 Collabora Ltd.
   3  *
   4  * This program is free software; you can redistribute it and/or
   5  * modify it under the terms of the GNU General Public License as
   6  * published by the Free Software Foundation; either version 2 of the
   7  * License, or (at your option) any later version.
   8  *
   9  * This program is distributed in the hope that it will be useful,
  10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  12  * General Public License for more details.
  13  *
  14  * You should have received a copy of the GNU General Public
  15  * License along with this program; if not, write to the
  16  * Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
  17  * Boston, MA  02110-1301  USA
  18  *
  19  * Authors: Pierre-Luc Beaudoin <pierre-luc.beaudoin@collabora.co.uk>
  20  */
  21
  22 #include "config.h"
  23 #include "empathy-location-manager.h"
  24
  25 #include <telepathy-glib/telepathy-glib-dbus.h>
  26
  27 #include <tp-account-widgets/tpaw-time.h>
  28
  29 #include "empathy-gsettings.h"
  30 #include "empathy-location.h"
  31 #include "empathy-geoclue-helper.h"
  32
  33 #define DEBUG_FLAG EMPATHY_DEBUG_LOCATION
  34 #include "empathy-debug.h"
  35
  36 /* Seconds before updating the location */
  37 #define TIMEOUT 10
  38 static EmpathyLocationManager *location_manager = NULL;
  39
  40 typedef enum
  41 {
  42   GEOCLUE_NONE = 0,
  43   GEOCLUE_STARTING,
  44   GEOCLUE_STARTED,
  45   GEOCLUE_FAILED,
  46 } GeoclueStatus;
  47
  48 struct _EmpathyLocationManagerPrivate {
  49     GeoclueStatus geoclue_status;
  50     /* Contains the location to be sent to accounts.  Geoclue is used
  51      * to populate it.  This HashTable uses Telepathy's style (string,
  52      * GValue). Keys are defined in empathy-location.h
  53      */
  54     GHashTable *location;
  55
  56     GSettings *gsettings_loc;
  57
  58     gboolean reduce_accuracy;
  59     TpAccountManager *account_manager;
  60     EmpathyGeoclueHelper *geoclue;
  61
  62     /* The idle id for publish_on_idle func */
  63     guint timeout_id;
  64 };
  65
  66 G_DEFINE_TYPE (EmpathyLocationManager, empathy_location_manager, G_TYPE_OBJECT);
  67
  68 static GObject *
  69 location_manager_constructor (GType type,
  70     guint n_construct_params,
  71     GObjectConstructParam *construct_params)
  72 {
  73   GObject *retval;
  74
  75   if (location_manager == NULL)
  76     {
  77       retval = G_OBJECT_CLASS (empathy_location_manager_parent_class)->constructor
  78           (type, n_construct_params, construct_params);
  79
  80       location_manager = EMPATHY_LOCATION_MANAGER (retval);
  81       g_object_add_weak_pointer (retval, (gpointer) &location_manager);
  82     }
  83   else
  84     {
  85       retval = g_object_ref (location_manager);
  86     }
  87
  88   return retval;
  89 }
  90
  91 static void
  92 location_manager_dispose (GObject *object)
  93 {
  94   EmpathyLocationManager *self = (EmpathyLocationManager *) object;
  95   void (*dispose) (GObject *) =
  96     G_OBJECT_CLASS (empathy_location_manager_parent_class)->dispose;
  97
  98   tp_clear_object (&self->priv->account_manager);
  99   tp_clear_object (&self->priv->gsettings_loc);
 100   tp_clear_pointer (&self->priv->location, g_hash_table_unref);
 101
 102   if (dispose != NULL)
 103     dispose (object);
 104 }
 105
 106 static void
 107 empathy_location_manager_class_init (EmpathyLocationManagerClass *class)
 108 {
 109   GObjectClass *object_class;
 110
 111   object_class = G_OBJECT_CLASS (class);
 112
 113   object_class->constructor = location_manager_constructor;
 114   object_class->dispose = location_manager_dispose;
 115
 116   g_type_class_add_private (object_class, sizeof (EmpathyLocationManagerPrivate));
 117 }
 118
 119 static void
 120 publish_location_cb (TpConnection *connection,
 121                      const GError *error,
 122                      gpointer user_data,
 123                      GObject *weak_object)
 124 {
 125   if (error != NULL)
 126       DEBUG ("Error setting location: %s", error->message);
 127 }
 128
 129 static void
 130 publish_location (EmpathyLocationManager *self,
 131     TpConnection *conn,
 132     gboolean force_publication)
 133 {
 134   guint connection_status = -1;
 135
 136   if (!conn)
 137     return;
 138
 139   if (!force_publication)
 140     {
 141       if (!g_settings_get_boolean (self->priv->gsettings_loc,
 142             EMPATHY_PREFS_LOCATION_PUBLISH))
 143         return;
 144     }
 145
 146   connection_status = tp_connection_get_status (conn, NULL);
 147
 148   if (connection_status != TP_CONNECTION_STATUS_CONNECTED)
 149     return;
 150
 151   DEBUG ("Publishing %s location to connection %p",
 152       (g_hash_table_size (self->priv->location) == 0 ? "empty" : ""),
 153       conn);
 154
 155   tp_cli_connection_interface_location_call_set_location (conn, -1,
 156       self->priv->location, publish_location_cb, NULL, NULL, G_OBJECT (self));
 157 }
 158
 159 typedef struct
 160 {
 161   EmpathyLocationManager *self;
 162   gboolean force_publication;
 163 } PublishToAllData;
 164
 165 static void
 166 publish_to_all_am_prepared_cb (GObject *source_object,
 167     GAsyncResult *result,
 168     gpointer user_data)
 169 {
 170   TpAccountManager *manager = TP_ACCOUNT_MANAGER (source_object);
 171   PublishToAllData *data = user_data;
 172   GList *accounts, *l;
 173   GError *error = NULL;
 174
 175   if (!tp_proxy_prepare_finish (manager, result, &error))
 176     {
 177       DEBUG ("Failed to prepare account manager: %s", error->message);
 178       g_error_free (error);
 179       goto out;
 180     }
 181
 182   accounts = tp_account_manager_dup_valid_accounts (manager);
 183   for (l = accounts; l; l = l->next)
 184     {
 185       TpConnection *conn = tp_account_get_connection (TP_ACCOUNT (l->data));
 186
 187       if (conn != NULL)
 188         publish_location (data->self, conn, data->force_publication);
 189     }
 190   g_list_free_full (accounts, g_object_unref);
 191
 192 out:
 193   g_object_unref (data->self);
 194   g_slice_free (PublishToAllData, data);
 195 }
 196
 197 static void
 198 publish_to_all_connections (EmpathyLocationManager *self,
 199     gboolean force_publication)
 200 {
 201   PublishToAllData *data;
 202
 203   data = g_slice_new0 (PublishToAllData);
 204   data->self = g_object_ref (self);
 205   data->force_publication = force_publication;
 206
 207   tp_proxy_prepare_async (self->priv->account_manager, NULL,
 208       publish_to_all_am_prepared_cb, data);
 209 }
 210
 211 static gboolean
 212 publish_on_idle (gpointer user_data)
 213 {
 214   EmpathyLocationManager *manager = EMPATHY_LOCATION_MANAGER (user_data);
 215
 216   manager->priv->timeout_id = 0;
 217   publish_to_all_connections (manager, TRUE);
 218   return FALSE;
 219 }
 220
 221 static void
 222 new_connection_cb (TpAccount *account,
 223     guint old_status,
 224     guint new_status,
 225     guint reason,
 226     gchar *dbus_error_name,
 227     GHashTable *details,
 228     gpointer user_data)
 229 {
 230   EmpathyLocationManager *self = user_data;
 231   TpConnection *conn;
 232
 233   conn = tp_account_get_connection (account);
 234
 235   DEBUG ("New connection %p", conn);
 236
 237   /* Don't publish if it is already planned (ie startup) */
 238   if (self->priv->timeout_id == 0)
 239     {
 240       publish_location (EMPATHY_LOCATION_MANAGER (self), conn,
 241           FALSE);
 242     }
 243 }
 244
 245 static void
 246 update_location (EmpathyLocationManager *self,
 247     GClueLocation *proxy)
 248 {
 249   gdouble latitude, longitude, accuracy;
 250   const gchar *desc;
 251   gint64 timestamp;
 252
 253   latitude = gclue_location_get_latitude (proxy);
 254   longitude = gclue_location_get_longitude (proxy);
 255   accuracy = gclue_location_get_accuracy (proxy);
 256   desc = gclue_location_get_description (proxy);
 257
 258   DEBUG ("Location updated: (%f %f) accuracy: %f (%s)",
 259       latitude, longitude, accuracy, desc);
 260
 261   if (self->priv->reduce_accuracy)
 262     {
 263       /* Truncate at 1 decimal place */
 264       latitude = ((int) (latitude * 10)) / 10.0;
 265       longitude = ((int) (longitude * 10)) / 10.0;
 266     }
 267   else
 268     {
 269       /* Include the description only if we are not asked to reduce the
 270        * accuracy as it can contains a pretty specific description of the
 271        * location. */
 272       tp_asv_set_string (self->priv->location, EMPATHY_LOCATION_DESCRIPTION,
 273           desc);
 274     }
 275
 276   tp_asv_set_double (self->priv->location, EMPATHY_LOCATION_LAT, latitude);
 277   tp_asv_set_double (self->priv->location, EMPATHY_LOCATION_LON, longitude);
 278   tp_asv_set_double (self->priv->location, EMPATHY_LOCATION_ACCURACY, accuracy);
 279
 280   timestamp = tpaw_time_get_current ();
 281   tp_asv_set_int64 (self->priv->location, EMPATHY_LOCATION_TIMESTAMP,
 282       timestamp);
 283
 284   if (self->priv->timeout_id == 0)
 285     self->priv->timeout_id = g_timeout_add_seconds (TIMEOUT, publish_on_idle,
 286         self);
 287 }
 288
 289 static void
 290 location_changed_cb (EmpathyGeoclueHelper *geoclue,
 291     GClueLocation *location,
 292     EmpathyLocationManager *self)
 293 {
 294   update_location (self, location);
 295 }
 296
 297 static void
 298 geoclue_new_cb (GObject *source,
 299     GAsyncResult *result,
 300     gpointer user_data)
 301 {
 302   EmpathyLocationManager *self = EMPATHY_LOCATION_MANAGER (user_data);
 303   GError *error = NULL;
 304   GClueLocation *location;
 305
 306   self->priv->geoclue = empathy_geoclue_helper_new_started_finish (result,
 307       &error);
 308
 309   if (self->priv->geoclue == NULL)
 310     {
 311       DEBUG ("Failed to create Geoclue client: %s", error->message);
 312       g_error_free (error);
 313       self->priv->geoclue_status = GEOCLUE_FAILED;
 314       return;
 315     }
 316
 317   self->priv->geoclue_status = GEOCLUE_STARTED;
 318
 319   g_signal_connect_object (self->priv->geoclue, "location-changed",
 320       G_CALLBACK (location_changed_cb), self, 0);
 321
 322   location = empathy_geoclue_helper_get_location (self->priv->geoclue);
 323   if (location != NULL)
 324     update_location (self, location);
 325 }
 326
 327 static void
 328 setup_geoclue (EmpathyLocationManager *self)
 329 {
 330   switch (self->priv->geoclue_status)
 331     {
 332       case GEOCLUE_NONE:
 333         g_assert (self->priv->geoclue == NULL);
 334         self->priv->geoclue_status = GEOCLUE_STARTING;
 335         empathy_geoclue_helper_new_started_async (0, geoclue_new_cb, self);
 336         break;
 337       case GEOCLUE_STARTED:
 338       case GEOCLUE_STARTING:
 339       case GEOCLUE_FAILED:
 340       return;
 341     }
 342 }
 343
 344 static void
 345 publish_cb (GSettings *gsettings_loc,
 346     const gchar *key,
 347     gpointer user_data)
 348 {
 349   EmpathyLocationManager *self = EMPATHY_LOCATION_MANAGER (user_data);
 350
 351   DEBUG ("Publish Conf changed");
 352
 353   if (g_settings_get_boolean (gsettings_loc, key))
 354     {
 355       setup_geoclue (self);
 356     }
 357   else
 358     {
 359       /* As per XEP-0080: send an empty location to have remove current
 360        * location from the servers
 361        */
 362       g_hash_table_remove_all (self->priv->location);
 363       publish_to_all_connections (self, TRUE);
 364
 365       g_clear_object (&self->priv->geoclue);
 366       self->priv->geoclue_status = GEOCLUE_NONE;
 367     }
 368 }
 369
 370 static void
 371 reduce_accuracy_cb (GSettings *gsettings_loc,
 372     const gchar *key,
 373     gpointer user_data)
 374 {
 375   EmpathyLocationManager *self = EMPATHY_LOCATION_MANAGER (user_data);
 376
 377   DEBUG ("Reduce Accuracy changed");
 378
 379   self->priv->reduce_accuracy = g_settings_get_boolean (gsettings_loc, key);
 380 }
 381
 382 static void
 383 account_manager_prepared_cb (GObject *source_object,
 384     GAsyncResult *result,
 385     gpointer user_data)
 386 {
 387   GList *accounts, *l;
 388   TpAccountManager *account_manager = TP_ACCOUNT_MANAGER (source_object);
 389   EmpathyLocationManager *self = user_data;
 390   GError *error = NULL;
 391
 392   if (!tp_proxy_prepare_finish (account_manager, result, &error))
 393     {
 394       DEBUG ("Failed to prepare account manager: %s", error->message);
 395       g_error_free (error);
 396       return;
 397     }
 398
 399   accounts = tp_account_manager_dup_valid_accounts (account_manager);
 400   for (l = accounts; l != NULL; l = l->next)
 401     {
 402       TpAccount *account = TP_ACCOUNT (l->data);
 403
 404       tp_g_signal_connect_object (account, "status-changed",
 405           G_CALLBACK (new_connection_cb), self, 0);
 406     }
 407   g_list_free_full (accounts, g_object_unref);
 408 }
 409
 410 static void
 411 empathy_location_manager_init (EmpathyLocationManager *self)
 412 {
 413   EmpathyLocationManagerPrivate *priv = G_TYPE_INSTANCE_GET_PRIVATE (self,
 414       EMPATHY_TYPE_LOCATION_MANAGER, EmpathyLocationManagerPrivate);
 415
 416   self->priv = priv;
 417   priv->location = tp_asv_new (NULL, NULL);
 418   priv->gsettings_loc = g_settings_new (EMPATHY_PREFS_LOCATION_SCHEMA);
 419
 420   /* Setup account status callbacks */
 421   priv->account_manager = tp_account_manager_dup ();
 422
 423   tp_proxy_prepare_async (priv->account_manager, NULL,
 424       account_manager_prepared_cb, self);
 425
 426   /* Setup settings status callbacks */
 427   g_signal_connect (priv->gsettings_loc,
 428       "changed::" EMPATHY_PREFS_LOCATION_PUBLISH,
 429       G_CALLBACK (publish_cb), self);
 430
 431   g_signal_connect (priv->gsettings_loc,
 432       "changed::" EMPATHY_PREFS_LOCATION_REDUCE_ACCURACY,
 433       G_CALLBACK (reduce_accuracy_cb), self);
 434
 435   publish_cb (priv->gsettings_loc, EMPATHY_PREFS_LOCATION_PUBLISH, self);
 436   reduce_accuracy_cb (priv->gsettings_loc, EMPATHY_PREFS_LOCATION_REDUCE_ACCURACY, self);
 437 }
 438
 439 EmpathyLocationManager *
 440 empathy_location_manager_dup_singleton (void)
 441 {
 442   return EMPATHY_LOCATION_MANAGER (g_object_new (EMPATHY_TYPE_LOCATION_MANAGER,
 443       NULL));
 444 }