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                                         enum connman_service_state old_state)
 155 {
 156         DBG("type %d", type);
 157
 158         __sync_synchronize();
 159         if (connected[type] == 0) {
 160                 connman_error("notifier disconnect underflow");
 161                 return;
 162         }
 163
 164         switch (type) {
 165         case CONNMAN_SERVICE_TYPE_UNKNOWN:
 166         case CONNMAN_SERVICE_TYPE_SYSTEM:
 167         case CONNMAN_SERVICE_TYPE_GPS:
 168         case CONNMAN_SERVICE_TYPE_VPN:
 169         case CONNMAN_SERVICE_TYPE_GADGET:
 170                 return;
 171         case CONNMAN_SERVICE_TYPE_ETHERNET:
 172         case CONNMAN_SERVICE_TYPE_WIFI:
 173         case CONNMAN_SERVICE_TYPE_WIMAX:
 174         case CONNMAN_SERVICE_TYPE_BLUETOOTH:
 175         case CONNMAN_SERVICE_TYPE_CELLULAR:
 176                 break;
 177         }
 178
 179         if (__sync_fetch_and_sub(&connected[type], 1) != 1)
 180                 return;
 181
 182         technology_connected(type, FALSE);
 183 }
 184
 185 static void technology_default(enum connman_service_type type)
 186 {
 187         const char *str;
 188
 189         str = __connman_service_type2string(type);
 190         if (str == NULL)
 191                 str = "";
 192
 193         connman_dbus_property_changed_basic(CONNMAN_MANAGER_PATH,
 194                         CONNMAN_MANAGER_INTERFACE, "DefaultTechnology",
 195                                                 DBUS_TYPE_STRING, &str);
 196 }
 197
 198 void __connman_notifier_default_changed(struct connman_service *service)
 199 {
 200         enum connman_service_type type = connman_service_get_type(service);
 201         GSList *list;
 202
 203         technology_default(type);
 204
 205         for (list = notifier_list; list; list = list->next) {
 206                 struct connman_notifier *notifier = list->data;
 207
 208                 if (notifier->default_changed)
 209                         notifier->default_changed(service);
 210         }
 211 }
 212
 213 void __connman_notifier_service_add(struct connman_service *service,
 214                                         const char *name)
 215 {
 216         GSList *list;
 217
 218         for (list = notifier_list; list; list = list->next) {
 219                 struct connman_notifier *notifier = list->data;
 220
 221                 if (notifier->service_add)
 222                         notifier->service_add(service, name);
 223         }
 224 }
 225
 226 void __connman_notifier_service_remove(struct connman_service *service)
 227 {
 228         GSList *list;
 229
 230         if (g_hash_table_lookup(service_hash, service) != NULL) {
 231                 /*
 232                  * This is a tempory check for consistency. It can be
 233                  * removed when there are no reports for the following
 234                  * error message.
 235                  */
 236                 connman_error("Service state machine inconsistency detected.");
 237
 238                 g_hash_table_remove(service_hash, service);
 239         }
 240
 241         for (list = notifier_list; list; list = list->next) {
 242                 struct connman_notifier *notifier = list->data;
 243
 244                 if (notifier->service_remove)
 245                         notifier->service_remove(service);
 246         }
 247 }
 248
 249 void __connman_notifier_proxy_changed(struct connman_service *service)
 250 {
 251         GSList *list;
 252
 253         for (list = notifier_list; list; list = list->next) {
 254                 struct connman_notifier *notifier = list->data;
 255
 256                 if (notifier->proxy_changed)
 257                         notifier->proxy_changed(service);
 258         }
 259 }
 260
 261 static void offlinemode_changed(dbus_bool_t enabled)
 262 {
 263         DBG("enabled %d", enabled);
 264
 265         connman_dbus_property_changed_basic(CONNMAN_MANAGER_PATH,
 266                                 CONNMAN_MANAGER_INTERFACE, "OfflineMode",
 267                                                 DBUS_TYPE_BOOLEAN, &enabled);
 268 }
 269
 270 void __connman_notifier_offlinemode(connman_bool_t enabled)
 271 {
 272         GSList *list;
 273
 274         DBG("enabled %d", enabled);
 275
 276         offlinemode_changed(enabled);
 277
 278         for (list = notifier_list; list; list = list->next) {
 279                 struct connman_notifier *notifier = list->data;
 280
 281                 if (notifier->offline_mode)
 282                         notifier->offline_mode(enabled);
 283         }
 284 }
 285
 286 static void notify_idle_state(connman_bool_t idle)
 287 {
 288         GSList *list;
 289
 290         DBG("idle %d", idle);
 291
 292         for (list = notifier_list; list; list = list->next) {
 293                 struct connman_notifier *notifier = list->data;
 294
 295                 if (notifier->idle_state)
 296                         notifier->idle_state(idle);
 297         }
 298 }
 299
 300 void __connman_notifier_service_state_changed(struct connman_service *service,
 301                                         enum connman_service_state state)
 302 {
 303         GSList *list;
 304         unsigned int old_size;
 305         connman_bool_t found;
 306
 307         for (list = notifier_list; list; list = list->next) {
 308                 struct connman_notifier *notifier = list->data;
 309
 310                 if (notifier->service_state_changed)
 311                         notifier->service_state_changed(service, state);
 312         }
 313
 314         old_size = g_hash_table_size(service_hash);
 315         found = g_hash_table_lookup(service_hash, service) != NULL;
 316
 317         switch (state) {
 318         case CONNMAN_SERVICE_STATE_UNKNOWN:
 319         case CONNMAN_SERVICE_STATE_FAILURE:
 320         case CONNMAN_SERVICE_STATE_DISCONNECT:
 321         case CONNMAN_SERVICE_STATE_IDLE:
 322                 if (found == FALSE)
 323                         break;
 324
 325                 g_hash_table_remove(service_hash, service);
 326                 if (old_size == 1)
 327                         notify_idle_state(TRUE);
 328
 329                 break;
 330         case CONNMAN_SERVICE_STATE_ASSOCIATION:
 331         case CONNMAN_SERVICE_STATE_CONFIGURATION:
 332         case CONNMAN_SERVICE_STATE_READY:
 333         case CONNMAN_SERVICE_STATE_ONLINE:
 334                 if (found == TRUE)
 335                         break;
 336
 337                 g_hash_table_insert(service_hash, service, service);
 338                 if (old_size == 0)
 339                         notify_idle_state(FALSE);
 340
 341                 break;
 342         }
 343 }
 344
 345 void __connman_notifier_ipconfig_changed(struct connman_service *service,
 346                                         struct connman_ipconfig *ipconfig)
 347 {
 348         GSList *list;
 349
 350         for (list = notifier_list; list; list = list->next) {
 351                 struct connman_notifier *notifier = list->data;
 352
 353                 if (notifier->ipconfig_changed)
 354                         notifier->ipconfig_changed(service, ipconfig);
 355         }
 356 }
 357
 358 int __connman_notifier_init(void)
 359 {
 360         DBG("");
 361
 362         connection = connman_dbus_get_connection();
 363
 364         service_hash = g_hash_table_new_full(g_direct_hash, g_direct_equal,
 365                                                 NULL, NULL);
 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 }