src/notifier.c

   1 /*
   2  *
   3  *  Connection Manager
   4  *
   5  *  Copyright (C) 2007-2013  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 const char *notifier_state;
  36
  37 static gint compare_priority(gconstpointer a, gconstpointer b)
  38 {
  39         const struct connman_notifier *notifier1 = a;
  40         const struct connman_notifier *notifier2 = b;
  41
  42         return notifier2->priority - notifier1->priority;
  43 }
  44
  45 /**
  46  * connman_notifier_register:
  47  * @notifier: notifier module
  48  *
  49  * Register a new notifier module
  50  *
  51  * Returns: %0 on success
  52  */
  53 int connman_notifier_register(struct connman_notifier *notifier)
  54 {
  55         DBG("notifier %p name %s", notifier, notifier->name);
  56
  57         notifier_list = g_slist_insert_sorted(notifier_list, notifier,
  58                                                         compare_priority);
  59
  60         return 0;
  61 }
  62
  63 /**
  64  * connman_notifier_unregister:
  65  * @notifier: notifier module
  66  *
  67  * Remove a previously registered notifier module
  68  */
  69 void connman_notifier_unregister(struct connman_notifier *notifier)
  70 {
  71         DBG("notifier %p name %s", notifier, notifier->name);
  72
  73         notifier_list = g_slist_remove(notifier_list, notifier);
  74 }
  75
  76 static int connected[MAX_CONNMAN_SERVICE_TYPES];
  77 static int online[MAX_CONNMAN_SERVICE_TYPES];
  78
  79 static bool notifier_is_online(void)
  80 {
  81         unsigned int i;
  82
  83         __sync_synchronize();
  84         for (i = 0; i < MAX_CONNMAN_SERVICE_TYPES; i++) {
  85                 if (online[i] > 0)
  86                         return true;
  87         }
  88
  89         return false;
  90 }
  91
  92 bool __connman_notifier_is_connected(void)
  93 {
  94         unsigned int i;
  95
  96         __sync_synchronize();
  97         for (i = 0; i < MAX_CONNMAN_SERVICE_TYPES; i++) {
  98                 if (connected[i] > 0)
  99                         return true;
 100         }
 101
 102         return false;
 103 }
 104
 105 static const char *evaluate_notifier_state(void)
 106 {
 107         if (notifier_is_online())
 108                 return "online";
 109
 110         if (__connman_notifier_is_connected())
 111                 return "ready";
 112
 113         if (__connman_technology_get_offlinemode())
 114                 return "offline";
 115
 116         return "idle";
 117 }
 118
 119 const char *__connman_notifier_get_state(void)
 120 {
 121         return notifier_state;
 122 }
 123
 124 static void state_changed(void)
 125 {
 126         const char *state;
 127
 128         state = evaluate_notifier_state();
 129
 130         if (g_strcmp0(state, notifier_state) == 0)
 131                 return;
 132
 133         notifier_state = state;
 134
 135         connman_dbus_property_changed_basic(CONNMAN_MANAGER_PATH,
 136                                 CONNMAN_MANAGER_INTERFACE, "State",
 137                                         DBUS_TYPE_STRING, &notifier_state);
 138 }
 139
 140 void __connman_notifier_connect(enum connman_service_type type)
 141 {
 142         DBG("type %d", type);
 143
 144         switch (type) {
 145         case CONNMAN_SERVICE_TYPE_UNKNOWN:
 146         case CONNMAN_SERVICE_TYPE_SYSTEM:
 147         case CONNMAN_SERVICE_TYPE_GPS:
 148         case CONNMAN_SERVICE_TYPE_VPN:
 149                 return;
 150         case CONNMAN_SERVICE_TYPE_ETHERNET:
 151         case CONNMAN_SERVICE_TYPE_GADGET:
 152         case CONNMAN_SERVICE_TYPE_WIFI:
 153         case CONNMAN_SERVICE_TYPE_BLUETOOTH:
 154         case CONNMAN_SERVICE_TYPE_CELLULAR:
 155         case CONNMAN_SERVICE_TYPE_P2P:
 156 #if defined TIZEN_EXT_WIFI_MESH
 157         case CONNMAN_SERVICE_TYPE_MESH:
 158 #endif
 159                 break;
 160         }
 161
 162         if (__sync_fetch_and_add(&connected[type], 1) == 0) {
 163                 __connman_technology_set_connected(type, true);
 164                 state_changed();
 165         }
 166 }
 167
 168 void __connman_notifier_enter_online(enum connman_service_type type)
 169 {
 170         DBG("type %d", type);
 171
 172         if (__sync_fetch_and_add(&online[type], 1) == 0)
 173                 state_changed();
 174 }
 175
 176 void __connman_notifier_leave_online(enum connman_service_type type)
 177 {
 178         DBG("type %d", type);
 179
 180         if (__sync_fetch_and_sub(&online[type], 1) == 1)
 181                 state_changed();
 182 }
 183
 184 void __connman_notifier_disconnect(enum connman_service_type type)
 185 {
 186         DBG("type %d", type);
 187
 188         __sync_synchronize();
 189         if (connected[type] == 0) {
 190                 connman_error("notifier disconnect underflow");
 191                 return;
 192         }
 193
 194         switch (type) {
 195         case CONNMAN_SERVICE_TYPE_UNKNOWN:
 196         case CONNMAN_SERVICE_TYPE_SYSTEM:
 197         case CONNMAN_SERVICE_TYPE_GPS:
 198         case CONNMAN_SERVICE_TYPE_VPN:
 199                 return;
 200         case CONNMAN_SERVICE_TYPE_ETHERNET:
 201         case CONNMAN_SERVICE_TYPE_GADGET:
 202         case CONNMAN_SERVICE_TYPE_WIFI:
 203         case CONNMAN_SERVICE_TYPE_BLUETOOTH:
 204         case CONNMAN_SERVICE_TYPE_CELLULAR:
 205         case CONNMAN_SERVICE_TYPE_P2P:
 206 #if defined TIZEN_EXT_WIFI_MESH
 207         case CONNMAN_SERVICE_TYPE_MESH:
 208 #endif
 209                 break;
 210         }
 211
 212         if (__sync_fetch_and_sub(&connected[type], 1) != 1)
 213                 return;
 214
 215         __connman_technology_set_connected(type, false);
 216         state_changed();
 217 }
 218
 219 void __connman_notifier_default_changed(struct connman_service *service)
 220 {
 221         GSList *list;
 222
 223         for (list = notifier_list; list; list = list->next) {
 224                 struct connman_notifier *notifier = list->data;
 225
 226                 if (notifier->default_changed)
 227                         notifier->default_changed(service);
 228         }
 229 }
 230
 231 void __connman_notifier_service_add(struct connman_service *service,
 232                                         const char *name)
 233 {
 234         GSList *list;
 235
 236         for (list = notifier_list; list; list = list->next) {
 237                 struct connman_notifier *notifier = list->data;
 238
 239                 if (notifier->service_add)
 240                         notifier->service_add(service, name);
 241         }
 242 }
 243
 244 void __connman_notifier_service_remove(struct connman_service *service)
 245 {
 246         GSList *list;
 247
 248         if (g_hash_table_lookup(service_hash, service)) {
 249                 /*
 250                  * This is a tempory check for consistency. It can be
 251                  * removed when there are no reports for the following
 252                  * error message.
 253                  */
 254                 connman_error("Service state machine inconsistency detected.");
 255
 256                 g_hash_table_remove(service_hash, service);
 257         }
 258
 259         for (list = notifier_list; list; list = list->next) {
 260                 struct connman_notifier *notifier = list->data;
 261
 262                 if (notifier->service_remove)
 263                         notifier->service_remove(service);
 264         }
 265 }
 266
 267 void __connman_notifier_proxy_changed(struct connman_service *service)
 268 {
 269         GSList *list;
 270
 271         for (list = notifier_list; list; list = list->next) {
 272                 struct connman_notifier *notifier = list->data;
 273
 274                 if (notifier->proxy_changed)
 275                         notifier->proxy_changed(service);
 276         }
 277 }
 278
 279 static void offlinemode_changed(dbus_bool_t enabled)
 280 {
 281         DBG("enabled %d", enabled);
 282
 283         connman_dbus_property_changed_basic(CONNMAN_MANAGER_PATH,
 284                                 CONNMAN_MANAGER_INTERFACE, "OfflineMode",
 285                                                 DBUS_TYPE_BOOLEAN, &enabled);
 286 }
 287
 288 void __connman_notifier_offlinemode(bool enabled)
 289 {
 290         GSList *list;
 291
 292         DBG("enabled %d", enabled);
 293
 294         offlinemode_changed(enabled);
 295         state_changed();
 296
 297         for (list = notifier_list; list; list = list->next) {
 298                 struct connman_notifier *notifier = list->data;
 299
 300                 if (notifier->offline_mode)
 301                         notifier->offline_mode(enabled);
 302         }
 303 }
 304
 305 static void notify_idle_state(bool idle)
 306 {
 307         GSList *list;
 308
 309         DBG("idle %d", idle);
 310
 311         for (list = notifier_list; list; list = list->next) {
 312                 struct connman_notifier *notifier = list->data;
 313
 314                 if (notifier->idle_state)
 315                         notifier->idle_state(idle);
 316         }
 317 }
 318
 319 void __connman_notifier_service_state_changed(struct connman_service *service,
 320                                         enum connman_service_state state)
 321 {
 322         GSList *list;
 323         unsigned int old_size;
 324         bool found;
 325
 326         for (list = notifier_list; list; list = list->next) {
 327                 struct connman_notifier *notifier = list->data;
 328
 329                 if (notifier->service_state_changed)
 330                         notifier->service_state_changed(service, state);
 331         }
 332
 333         old_size = g_hash_table_size(service_hash);
 334         found = g_hash_table_lookup(service_hash, service);
 335
 336         switch (state) {
 337         case CONNMAN_SERVICE_STATE_UNKNOWN:
 338         case CONNMAN_SERVICE_STATE_FAILURE:
 339         case CONNMAN_SERVICE_STATE_DISCONNECT:
 340         case CONNMAN_SERVICE_STATE_IDLE:
 341                 if (!found)
 342                         break;
 343
 344                 g_hash_table_remove(service_hash, service);
 345                 if (old_size == 1)
 346                         notify_idle_state(true);
 347
 348                 break;
 349         case CONNMAN_SERVICE_STATE_ASSOCIATION:
 350         case CONNMAN_SERVICE_STATE_CONFIGURATION:
 351         case CONNMAN_SERVICE_STATE_READY:
 352         case CONNMAN_SERVICE_STATE_ONLINE:
 353                 if (found)
 354                         break;
 355
 356                 g_hash_table_insert(service_hash, service, service);
 357                 if (old_size == 0)
 358                         notify_idle_state(false);
 359
 360                 break;
 361         }
 362 }
 363
 364 void __connman_notifier_ipconfig_changed(struct connman_service *service,
 365                                         struct connman_ipconfig *ipconfig)
 366 {
 367         GSList *list;
 368
 369         for (list = notifier_list; list; list = list->next) {
 370                 struct connman_notifier *notifier = list->data;
 371
 372                 if (notifier->ipconfig_changed)
 373                         notifier->ipconfig_changed(service, ipconfig);
 374         }
 375 }
 376
 377 int __connman_notifier_init(void)
 378 {
 379         DBG("");
 380
 381         connection = connman_dbus_get_connection();
 382
 383         service_hash = g_hash_table_new_full(g_direct_hash, g_direct_equal,
 384                                                 NULL, NULL);
 385
 386         notifier_state = evaluate_notifier_state();
 387
 388         return 0;
 389 }
 390
 391 void __connman_notifier_cleanup(void)
 392 {
 393         DBG("");
 394
 395         g_hash_table_destroy(service_hash);
 396         service_hash = NULL;
 397
 398         dbus_connection_unref(connection);
 399 }