src/notifier.c

   1 /*
   2  *
   3  *  Connection Manager
   4  *
   5  *  Copyright (C) 2007-2010  Intel Corporation. All rights reserved.
   6  *
   7  *  This program is free software; you can redistribute it and/or modify
   8  *  it under the terms of the GNU General Public License version 2 as
   9  *  published by the Free Software Foundation.
  10  *
  11  *  This program is distributed in the hope that it will be useful,
  12  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14  *  GNU General Public License for more details.
  15  *
  16  *  You should have received a copy of the GNU General Public License
  17  *  along with this program; if not, write to the Free Software
  18  *  Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
  19  *
  20  */
  21
  22 #ifdef HAVE_CONFIG_H
  23 #include <config.h>
  24 #endif
  25
  26 #include <gdbus.h>
  27
  28 #include "connman.h"
  29
  30 static DBusConnection *connection = NULL;
  31
  32 static GSList *notifier_list = NULL;
  33 static GHashTable *service_hash = NULL;
  34
  35 static gint compare_priority(gconstpointer a, gconstpointer b)
  36 {
  37         const struct connman_notifier *notifier1 = a;
  38         const struct connman_notifier *notifier2 = b;
  39
  40         return notifier2->priority - notifier1->priority;
  41 }
  42
  43 /**
  44  * connman_notifier_register:
  45  * @notifier: notifier module
  46  *
  47  * Register a new notifier module
  48  *
  49  * Returns: %0 on success
  50  */
  51 int connman_notifier_register(struct connman_notifier *notifier)
  52 {
  53         DBG("notifier %p name %s", notifier, notifier->name);
  54
  55         notifier_list = g_slist_insert_sorted(notifier_list, notifier,
  56                                                         compare_priority);
  57
  58         return 0;
  59 }
  60
  61 /**
  62  * connman_notifier_unregister:
  63  * @notifier: notifier module
  64  *
  65  * Remove a previously registered notifier module
  66  */
  67 void connman_notifier_unregister(struct connman_notifier *notifier)
  68 {
  69         DBG("notifier %p name %s", notifier, notifier->name);
  70
  71         notifier_list = g_slist_remove(notifier_list, notifier);
  72 }
  73
  74 #define MAX_TECHNOLOGIES 10
  75
  76 static volatile int connected[MAX_TECHNOLOGIES];
  77
  78 unsigned int __connman_notifier_count_connected(void)
  79 {
  80         unsigned int i, count = 0;
  81
  82         __sync_synchronize();
  83         for (i = 0; i < MAX_TECHNOLOGIES; i++) {
  84                 if (connected[i] > 0)
  85                         count++;
  86         }
  87
  88         return count;
  89 }
  90
  91 const char *__connman_notifier_get_state(void)
  92 {
  93         unsigned int count = __connman_notifier_count_connected();
  94
  95         if (count > 0)
  96                 return "online";
  97
  98         return "offline";
  99 }
 100
 101 static void state_changed(connman_bool_t connected)
 102 {
 103         unsigned int count = __connman_notifier_count_connected();
 104         char *state = "offline";
 105
 106         if (count > 1)
 107                 return;
 108
 109         if (count == 1) {
 110                 if (connected == FALSE)
 111                         return;
 112
 113                 state = "online";
 114         }
 115
 116         connman_dbus_property_changed_basic(CONNMAN_MANAGER_PATH,
 117                                 CONNMAN_MANAGER_INTERFACE, "State",
 118                                                 DBUS_TYPE_STRING, &state);
 119 }
 120
 121 static void technology_connected(enum connman_service_type type,
 122                                                 connman_bool_t connected)
 123 {
 124         DBG("type %d connected %d", type, connected);
 125
 126         __connman_technology_set_connected(type, connected);
 127         state_changed(connected);
 128 }
 129
 130 void __connman_notifier_connect(enum connman_service_type type)
 131 {
 132         DBG("type %d", type);
 133
 134         switch (type) {
 135         case CONNMAN_SERVICE_TYPE_UNKNOWN:
 136         case CONNMAN_SERVICE_TYPE_SYSTEM:
 137         case CONNMAN_SERVICE_TYPE_GPS:
 138         case CONNMAN_SERVICE_TYPE_VPN:
 139         case CONNMAN_SERVICE_TYPE_GADGET:
 140                 return;
 141         case CONNMAN_SERVICE_TYPE_ETHERNET:
 142         case CONNMAN_SERVICE_TYPE_WIFI:
 143         case CONNMAN_SERVICE_TYPE_WIMAX:
 144         case CONNMAN_SERVICE_TYPE_BLUETOOTH:
 145         case CONNMAN_SERVICE_TYPE_CELLULAR:
 146                 break;
 147         }
 148
 149         if (__sync_fetch_and_add(&connected[type], 1) == 0)
 150                 technology_connected(type, TRUE);
 151 }
 152
 153 void __connman_notifier_disconnect(enum connman_service_type type)
 154 {
 155         DBG("type %d", type);
 156
 157         __sync_synchronize();
 158         if (connected[type] == 0) {
 159                 connman_error("notifier disconnect underflow");
 160                 return;
 161         }
 162
 163         switch (type) {
 164         case CONNMAN_SERVICE_TYPE_UNKNOWN:
 165         case CONNMAN_SERVICE_TYPE_SYSTEM:
 166         case CONNMAN_SERVICE_TYPE_GPS:
 167         case CONNMAN_SERVICE_TYPE_VPN:
 168         case CONNMAN_SERVICE_TYPE_GADGET:
 169                 return;
 170         case CONNMAN_SERVICE_TYPE_ETHERNET:
 171         case CONNMAN_SERVICE_TYPE_WIFI:
 172         case CONNMAN_SERVICE_TYPE_WIMAX:
 173         case CONNMAN_SERVICE_TYPE_BLUETOOTH:
 174         case CONNMAN_SERVICE_TYPE_CELLULAR:
 175                 break;
 176         }
 177
 178         if (__sync_fetch_and_sub(&connected[type], 1) != 1)
 179                 return;
 180
 181         technology_connected(type, FALSE);
 182 }
 183
 184 static void technology_default(enum connman_service_type type)
 185 {
 186         const char *str;
 187
 188         str = __connman_service_type2string(type);
 189         if (str == NULL)
 190                 str = "";
 191
 192         connman_dbus_property_changed_basic(CONNMAN_MANAGER_PATH,
 193                         CONNMAN_MANAGER_INTERFACE, "DefaultTechnology",
 194                                                 DBUS_TYPE_STRING, &str);
 195 }
 196
 197 void __connman_notifier_default_changed(struct connman_service *service)
 198 {
 199         enum connman_service_type type = connman_service_get_type(service);
 200         GSList *list;
 201
 202         technology_default(type);
 203
 204         for (list = notifier_list; list; list = list->next) {
 205                 struct connman_notifier *notifier = list->data;
 206
 207                 if (notifier->default_changed)
 208                         notifier->default_changed(service);
 209         }
 210 }
 211
 212 void __connman_notifier_service_add(struct connman_service *service,
 213                                         const char *name)
 214 {
 215         GSList *list;
 216
 217         for (list = notifier_list; list; list = list->next) {
 218                 struct connman_notifier *notifier = list->data;
 219
 220                 if (notifier->service_add)
 221                         notifier->service_add(service, name);
 222         }
 223 }
 224
 225 void __connman_notifier_service_remove(struct connman_service *service)
 226 {
 227         GSList *list;
 228
 229         if (g_hash_table_lookup(service_hash, service) != NULL) {
 230                 /*
 231                  * This is a tempory check for consistency. It can be
 232                  * removed when there are no reports for the following
 233                  * error message.
 234                  */
 235                 connman_error("Service state machine inconsistency detected.");
 236
 237                 g_hash_table_remove(service_hash, service);
 238         }
 239
 240         for (list = notifier_list; list; list = list->next) {
 241                 struct connman_notifier *notifier = list->data;
 242
 243                 if (notifier->service_remove)
 244                         notifier->service_remove(service);
 245         }
 246 }
 247
 248 void __connman_notifier_proxy_changed(struct connman_service *service)
 249 {
 250         GSList *list;
 251
 252         for (list = notifier_list; list; list = list->next) {
 253                 struct connman_notifier *notifier = list->data;
 254
 255                 if (notifier->proxy_changed)
 256                         notifier->proxy_changed(service);
 257         }
 258 }
 259
 260 static void offlinemode_changed(dbus_bool_t enabled)
 261 {
 262         DBG("enabled %d", enabled);
 263
 264         connman_dbus_property_changed_basic(CONNMAN_MANAGER_PATH,
 265                                 CONNMAN_MANAGER_INTERFACE, "OfflineMode",
 266                                                 DBUS_TYPE_BOOLEAN, &enabled);
 267 }
 268
 269 void __connman_notifier_offlinemode(connman_bool_t enabled)
 270 {
 271         GSList *list;
 272
 273         DBG("enabled %d", enabled);
 274
 275         offlinemode_changed(enabled);
 276
 277         for (list = notifier_list; list; list = list->next) {
 278                 struct connman_notifier *notifier = list->data;
 279
 280                 if (notifier->offline_mode)
 281                         notifier->offline_mode(enabled);
 282         }
 283 }
 284
 285 static void notify_idle_state(connman_bool_t idle)
 286 {
 287         GSList *list;
 288
 289         DBG("idle %d", idle);
 290
 291         for (list = notifier_list; list; list = list->next) {
 292                 struct connman_notifier *notifier = list->data;
 293
 294                 if (notifier->idle_state)
 295                         notifier->idle_state(idle);
 296         }
 297 }
 298
 299 void __connman_notifier_service_state_changed(struct connman_service *service,
 300                                         enum connman_service_state state)
 301 {
 302         GSList *list;
 303         unsigned int old_size;
 304         connman_bool_t found;
 305
 306         for (list = notifier_list; list; list = list->next) {
 307                 struct connman_notifier *notifier = list->data;
 308
 309                 if (notifier->service_state_changed)
 310                         notifier->service_state_changed(service, state);
 311         }
 312
 313         old_size = g_hash_table_size(service_hash);
 314         found = g_hash_table_lookup(service_hash, service) != NULL;
 315
 316         switch (state) {
 317         case CONNMAN_SERVICE_STATE_UNKNOWN:
 318         case CONNMAN_SERVICE_STATE_FAILURE:
 319         case CONNMAN_SERVICE_STATE_DISCONNECT:
 320         case CONNMAN_SERVICE_STATE_IDLE:
 321                 if (found == FALSE)
 322                         break;
 323
 324                 g_hash_table_remove(service_hash, service);
 325                 if (old_size == 1)
 326                         notify_idle_state(TRUE);
 327
 328                 break;
 329         case CONNMAN_SERVICE_STATE_ASSOCIATION:
 330         case CONNMAN_SERVICE_STATE_CONFIGURATION:
 331         case CONNMAN_SERVICE_STATE_READY:
 332         case CONNMAN_SERVICE_STATE_ONLINE:
 333                 if (found == TRUE)
 334                         break;
 335
 336                 g_hash_table_insert(service_hash, service, service);
 337                 if (old_size == 0)
 338                         notify_idle_state(FALSE);
 339
 340                 break;
 341         }
 342 }
 343
 344 void __connman_notifier_ipconfig_changed(struct connman_service *service,
 345                                         struct connman_ipconfig *ipconfig)
 346 {
 347         GSList *list;
 348
 349         for (list = notifier_list; list; list = list->next) {
 350                 struct connman_notifier *notifier = list->data;
 351
 352                 if (notifier->ipconfig_changed)
 353                         notifier->ipconfig_changed(service, ipconfig);
 354         }
 355 }
 356
 357 int __connman_notifier_init(void)
 358 {
 359         DBG("");
 360
 361         connection = connman_dbus_get_connection();
 362
 363         service_hash = g_hash_table_new_full(g_direct_hash, g_direct_equal,
 364                                                 NULL, NULL);
 365
 366
 367         return 0;
 368 }
 369
 370 void __connman_notifier_cleanup(void)
 371 {
 372         DBG("");
 373
 374         g_hash_table_destroy(service_hash);
 375         service_hash = NULL;
 376
 377         dbus_connection_unref(connection);
 378 }