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 registered[MAX_TECHNOLOGIES];
  77 static volatile int enabled[MAX_TECHNOLOGIES];
  78 static volatile int connected[MAX_TECHNOLOGIES];
  79
  80 void __connman_notifier_list_registered(DBusMessageIter *iter, void *user_data)
  81 {
  82         int i;
  83
  84         __sync_synchronize();
  85         for (i = 0; i < MAX_TECHNOLOGIES; i++) {
  86                 const char *type = __connman_service_type2string(i);
  87
  88                 if (type == NULL)
  89                         continue;
  90
  91                 if (registered[i] > 0)
  92                         dbus_message_iter_append_basic(iter,
  93                                                 DBUS_TYPE_STRING, &type);
  94         }
  95 }
  96
  97 void __connman_notifier_list_enabled(DBusMessageIter *iter, void *user_data)
  98 {
  99         int i;
 100
 101         __sync_synchronize();
 102         for (i = 0; i < MAX_TECHNOLOGIES; i++) {
 103                 const char *type = __connman_service_type2string(i);
 104
 105                 if (type == NULL)
 106                         continue;
 107
 108                 if (enabled[i] > 0)
 109                         dbus_message_iter_append_basic(iter,
 110                                                 DBUS_TYPE_STRING, &type);
 111         }
 112 }
 113
 114 void __connman_notifier_list_connected(DBusMessageIter *iter, void *user_data)
 115 {
 116         int i;
 117
 118         __sync_synchronize();
 119         for (i = 0; i < MAX_TECHNOLOGIES; i++) {
 120                 const char *type = __connman_service_type2string(i);
 121
 122                 if (type == NULL)
 123                         continue;
 124
 125                 if (connected[i] > 0)
 126                         dbus_message_iter_append_basic(iter,
 127                                                 DBUS_TYPE_STRING, &type);
 128         }
 129 }
 130
 131 static void technology_registered(enum connman_service_type type,
 132                                                 connman_bool_t registered)
 133 {
 134         DBG("type %d registered %d", type, registered);
 135
 136         connman_dbus_property_changed_array(CONNMAN_MANAGER_PATH,
 137                 CONNMAN_MANAGER_INTERFACE, "AvailableTechnologies",
 138                 DBUS_TYPE_STRING, __connman_notifier_list_registered, NULL);
 139 }
 140
 141 static void technology_enabled(enum connman_service_type type,
 142                                                 connman_bool_t enabled)
 143 {
 144         GSList *list;
 145
 146         DBG("type %d enabled %d", type, enabled);
 147
 148         connman_dbus_property_changed_array(CONNMAN_MANAGER_PATH,
 149                 CONNMAN_MANAGER_INTERFACE, "EnabledTechnologies",
 150                 DBUS_TYPE_STRING, __connman_notifier_list_enabled, NULL);
 151
 152         for (list = notifier_list; list; list = list->next) {
 153                 struct connman_notifier *notifier = list->data;
 154
 155                 if (notifier->service_enabled)
 156                         notifier->service_enabled(type, enabled);
 157         }
 158 }
 159
 160 unsigned int __connman_notifier_count_connected(void)
 161 {
 162         unsigned int i, count = 0;
 163
 164         __sync_synchronize();
 165         for (i = 0; i < MAX_TECHNOLOGIES; i++) {
 166                 if (connected[i] > 0)
 167                         count++;
 168         }
 169
 170         return count;
 171 }
 172
 173 const char *__connman_notifier_get_state(void)
 174 {
 175         unsigned int count = __connman_notifier_count_connected();
 176
 177         if (count > 0)
 178                 return "online";
 179
 180         return "offline";
 181 }
 182
 183 static void state_changed(connman_bool_t connected)
 184 {
 185         unsigned int count = __connman_notifier_count_connected();
 186         char *state = "offline";
 187         DBusMessage *signal;
 188
 189         if (count > 1)
 190                 return;
 191
 192         if (count == 1) {
 193                 if (connected == FALSE)
 194                         return;
 195
 196                 state = "online";
 197         }
 198
 199         connman_dbus_property_changed_basic(CONNMAN_MANAGER_PATH,
 200                                 CONNMAN_MANAGER_INTERFACE, "State",
 201                                                 DBUS_TYPE_STRING, &state);
 202
 203         signal = dbus_message_new_signal(CONNMAN_MANAGER_PATH,
 204                                 CONNMAN_MANAGER_INTERFACE, "StateChanged");
 205         if (signal == NULL)
 206                 return;
 207
 208         dbus_message_append_args(signal, DBUS_TYPE_STRING, &state,
 209                                                         DBUS_TYPE_INVALID);
 210
 211         g_dbus_send_message(connection, signal);
 212 }
 213
 214 static void technology_connected(enum connman_service_type type,
 215                                                 connman_bool_t connected)
 216 {
 217         DBG("type %d connected %d", type, connected);
 218
 219         connman_dbus_property_changed_array(CONNMAN_MANAGER_PATH,
 220                 CONNMAN_MANAGER_INTERFACE, "ConnectedTechnologies",
 221                 DBUS_TYPE_STRING, __connman_notifier_list_connected, NULL);
 222
 223         state_changed(connected);
 224 }
 225
 226 void __connman_notifier_register(enum connman_service_type type)
 227 {
 228         DBG("type %d", type);
 229
 230         switch (type) {
 231         case CONNMAN_SERVICE_TYPE_UNKNOWN:
 232         case CONNMAN_SERVICE_TYPE_SYSTEM:
 233         case CONNMAN_SERVICE_TYPE_GPS:
 234         case CONNMAN_SERVICE_TYPE_VPN:
 235         case CONNMAN_SERVICE_TYPE_GADGET:
 236                 return;
 237         case CONNMAN_SERVICE_TYPE_ETHERNET:
 238         case CONNMAN_SERVICE_TYPE_WIFI:
 239         case CONNMAN_SERVICE_TYPE_WIMAX:
 240         case CONNMAN_SERVICE_TYPE_BLUETOOTH:
 241         case CONNMAN_SERVICE_TYPE_CELLULAR:
 242                 break;
 243         }
 244
 245         if (__sync_fetch_and_add(&registered[type], 1) == 0)
 246                 technology_registered(type, TRUE);
 247 }
 248
 249 void __connman_notifier_unregister(enum connman_service_type type)
 250 {
 251         DBG("type %d", type);
 252
 253         __sync_synchronize();
 254         if (registered[type] == 0) {
 255                 connman_error("notifier unregister underflow");
 256                 return;
 257         }
 258
 259         switch (type) {
 260         case CONNMAN_SERVICE_TYPE_UNKNOWN:
 261         case CONNMAN_SERVICE_TYPE_SYSTEM:
 262         case CONNMAN_SERVICE_TYPE_GPS:
 263         case CONNMAN_SERVICE_TYPE_VPN:
 264         case CONNMAN_SERVICE_TYPE_GADGET:
 265                 return;
 266         case CONNMAN_SERVICE_TYPE_ETHERNET:
 267         case CONNMAN_SERVICE_TYPE_WIFI:
 268         case CONNMAN_SERVICE_TYPE_WIMAX:
 269         case CONNMAN_SERVICE_TYPE_BLUETOOTH:
 270         case CONNMAN_SERVICE_TYPE_CELLULAR:
 271                 break;
 272         }
 273
 274         if (__sync_fetch_and_sub(&registered[type], 1) != 1)
 275                 return;
 276
 277         technology_registered(type, FALSE);
 278 }
 279
 280 void __connman_notifier_enable(enum connman_service_type type)
 281 {
 282         DBG("type %d", type);
 283
 284         switch (type) {
 285         case CONNMAN_SERVICE_TYPE_UNKNOWN:
 286         case CONNMAN_SERVICE_TYPE_SYSTEM:
 287         case CONNMAN_SERVICE_TYPE_GPS:
 288         case CONNMAN_SERVICE_TYPE_VPN:
 289         case CONNMAN_SERVICE_TYPE_GADGET:
 290                 return;
 291         case CONNMAN_SERVICE_TYPE_ETHERNET:
 292         case CONNMAN_SERVICE_TYPE_WIFI:
 293         case CONNMAN_SERVICE_TYPE_WIMAX:
 294         case CONNMAN_SERVICE_TYPE_BLUETOOTH:
 295         case CONNMAN_SERVICE_TYPE_CELLULAR:
 296                 break;
 297         }
 298
 299         if (__sync_fetch_and_add(&enabled[type], 1) == 0)
 300                 technology_enabled(type, TRUE);
 301 }
 302
 303 void __connman_notifier_disable(enum connman_service_type type)
 304 {
 305         DBG("type %d", type);
 306
 307         __sync_synchronize();
 308         if (enabled[type] == 0) {
 309                 connman_error("notifier disable underflow");
 310                 return;
 311         }
 312
 313         switch (type) {
 314         case CONNMAN_SERVICE_TYPE_UNKNOWN:
 315         case CONNMAN_SERVICE_TYPE_SYSTEM:
 316         case CONNMAN_SERVICE_TYPE_GPS:
 317         case CONNMAN_SERVICE_TYPE_VPN:
 318         case CONNMAN_SERVICE_TYPE_GADGET:
 319                 return;
 320         case CONNMAN_SERVICE_TYPE_ETHERNET:
 321         case CONNMAN_SERVICE_TYPE_WIFI:
 322         case CONNMAN_SERVICE_TYPE_WIMAX:
 323         case CONNMAN_SERVICE_TYPE_BLUETOOTH:
 324         case CONNMAN_SERVICE_TYPE_CELLULAR:
 325                 break;
 326         }
 327
 328         if (__sync_fetch_and_sub(&enabled[type], 1) != 1)
 329                 return;
 330
 331         technology_enabled(type, FALSE);
 332 }
 333
 334 void __connman_notifier_connect(enum connman_service_type type)
 335 {
 336         DBG("type %d", type);
 337
 338         switch (type) {
 339         case CONNMAN_SERVICE_TYPE_UNKNOWN:
 340         case CONNMAN_SERVICE_TYPE_SYSTEM:
 341         case CONNMAN_SERVICE_TYPE_GPS:
 342         case CONNMAN_SERVICE_TYPE_VPN:
 343         case CONNMAN_SERVICE_TYPE_GADGET:
 344                 return;
 345         case CONNMAN_SERVICE_TYPE_ETHERNET:
 346         case CONNMAN_SERVICE_TYPE_WIFI:
 347         case CONNMAN_SERVICE_TYPE_WIMAX:
 348         case CONNMAN_SERVICE_TYPE_BLUETOOTH:
 349         case CONNMAN_SERVICE_TYPE_CELLULAR:
 350                 break;
 351         }
 352
 353         if (__sync_fetch_and_add(&connected[type], 1) == 0)
 354                 technology_connected(type, TRUE);
 355 }
 356
 357 void __connman_notifier_disconnect(enum connman_service_type type)
 358 {
 359         DBG("type %d", type);
 360
 361         __sync_synchronize();
 362         if (connected[type] == 0) {
 363                 connman_error("notifier disconnect underflow");
 364                 return;
 365         }
 366
 367         switch (type) {
 368         case CONNMAN_SERVICE_TYPE_UNKNOWN:
 369         case CONNMAN_SERVICE_TYPE_SYSTEM:
 370         case CONNMAN_SERVICE_TYPE_GPS:
 371         case CONNMAN_SERVICE_TYPE_VPN:
 372         case CONNMAN_SERVICE_TYPE_GADGET:
 373                 return;
 374         case CONNMAN_SERVICE_TYPE_ETHERNET:
 375         case CONNMAN_SERVICE_TYPE_WIFI:
 376         case CONNMAN_SERVICE_TYPE_WIMAX:
 377         case CONNMAN_SERVICE_TYPE_BLUETOOTH:
 378         case CONNMAN_SERVICE_TYPE_CELLULAR:
 379                 break;
 380         }
 381
 382         if (__sync_fetch_and_sub(&connected[type], 1) != 1)
 383                 return;
 384
 385         technology_connected(type, FALSE);
 386 }
 387
 388 static void technology_default(enum connman_service_type type)
 389 {
 390         const char *str;
 391
 392         str = __connman_service_type2string(type);
 393         if (str == NULL)
 394                 str = "";
 395
 396         connman_dbus_property_changed_basic(CONNMAN_MANAGER_PATH,
 397                         CONNMAN_MANAGER_INTERFACE, "DefaultTechnology",
 398                                                 DBUS_TYPE_STRING, &str);
 399 }
 400
 401 void __connman_notifier_default_changed(struct connman_service *service)
 402 {
 403         enum connman_service_type type = connman_service_get_type(service);
 404         char *interface;
 405         GSList *list;
 406
 407         technology_default(type);
 408
 409         interface = connman_service_get_interface(service);
 410         __connman_tethering_update_interface(interface);
 411         g_free(interface);
 412
 413         for (list = notifier_list; list; list = list->next) {
 414                 struct connman_notifier *notifier = list->data;
 415
 416                 if (notifier->default_changed)
 417                         notifier->default_changed(service);
 418         }
 419 }
 420
 421 void __connman_notifier_service_add(struct connman_service *service,
 422                                         const char *name)
 423 {
 424         GSList *list;
 425
 426         for (list = notifier_list; list; list = list->next) {
 427                 struct connman_notifier *notifier = list->data;
 428
 429                 if (notifier->service_add)
 430                         notifier->service_add(service, name);
 431         }
 432 }
 433
 434 void __connman_notifier_service_remove(struct connman_service *service)
 435 {
 436         GSList *list;
 437
 438         if (g_hash_table_lookup(service_hash, service) != NULL) {
 439                 /*
 440                  * This is a tempory check for consistency. It can be
 441                  * removed when there are no reports for the following
 442                  * error message.
 443                  */
 444                 connman_error("Service state machine inconsistency detected.");
 445
 446                 g_hash_table_remove(service_hash, service);
 447         }
 448
 449         for (list = notifier_list; list; list = list->next) {
 450                 struct connman_notifier *notifier = list->data;
 451
 452                 if (notifier->service_remove)
 453                         notifier->service_remove(service);
 454         }
 455 }
 456
 457 void __connman_notifier_proxy_changed(struct connman_service *service)
 458 {
 459         GSList *list;
 460
 461         for (list = notifier_list; list; list = list->next) {
 462                 struct connman_notifier *notifier = list->data;
 463
 464                 if (notifier->proxy_changed)
 465                         notifier->proxy_changed(service);
 466         }
 467 }
 468
 469 static void offlinemode_changed(dbus_bool_t enabled)
 470 {
 471         DBG("enabled %d", enabled);
 472
 473         connman_dbus_property_changed_basic(CONNMAN_MANAGER_PATH,
 474                                 CONNMAN_MANAGER_INTERFACE, "OfflineMode",
 475                                                 DBUS_TYPE_BOOLEAN, &enabled);
 476 }
 477
 478 void __connman_notifier_offlinemode(connman_bool_t enabled)
 479 {
 480         GSList *list;
 481
 482         DBG("enabled %d", enabled);
 483
 484         offlinemode_changed(enabled);
 485
 486         for (list = notifier_list; list; list = list->next) {
 487                 struct connman_notifier *notifier = list->data;
 488
 489                 if (notifier->offline_mode)
 490                         notifier->offline_mode(enabled);
 491         }
 492 }
 493
 494 static void notify_idle_state(connman_bool_t idle)
 495 {
 496         GSList *list;
 497
 498         DBG("idle %d", idle);
 499
 500         for (list = notifier_list; list; list = list->next) {
 501                 struct connman_notifier *notifier = list->data;
 502
 503                 if (notifier->idle_state)
 504                         notifier->idle_state(idle);
 505         }
 506 }
 507
 508 void __connman_notifier_service_state_changed(struct connman_service *service,
 509                                         enum connman_service_state state)
 510 {
 511         GSList *list;
 512         unsigned int old_size;
 513         connman_bool_t found;
 514
 515         for (list = notifier_list; list; list = list->next) {
 516                 struct connman_notifier *notifier = list->data;
 517
 518                 if (notifier->service_state_changed)
 519                         notifier->service_state_changed(service, state);
 520         }
 521
 522         old_size = g_hash_table_size(service_hash);
 523         found = g_hash_table_lookup(service_hash, service) != NULL;
 524
 525         switch (state) {
 526         case CONNMAN_SERVICE_STATE_UNKNOWN:
 527         case CONNMAN_SERVICE_STATE_DISCONNECT:
 528         case CONNMAN_SERVICE_STATE_IDLE:
 529                 if (found == FALSE)
 530                         break;
 531
 532                 g_hash_table_remove(service_hash, service);
 533                 if (old_size == 1)
 534                         notify_idle_state(TRUE);
 535
 536                 break;
 537         case CONNMAN_SERVICE_STATE_ASSOCIATION:
 538         case CONNMAN_SERVICE_STATE_CONFIGURATION:
 539         case CONNMAN_SERVICE_STATE_READY:
 540         case CONNMAN_SERVICE_STATE_ONLINE:
 541         case CONNMAN_SERVICE_STATE_FAILURE:
 542                 if (found == TRUE)
 543                         break;
 544
 545                 g_hash_table_insert(service_hash, service, service);
 546                 if (old_size == 0)
 547                         notify_idle_state(FALSE);
 548
 549                 break;
 550         }
 551 }
 552
 553 void __connman_notifier_ipconfig_changed(struct connman_service *service,
 554                                         struct connman_ipconfig *ipconfig)
 555 {
 556         GSList *list;
 557
 558         for (list = notifier_list; list; list = list->next) {
 559                 struct connman_notifier *notifier = list->data;
 560
 561                 if (notifier->ipconfig_changed)
 562                         notifier->ipconfig_changed(service, ipconfig);
 563         }
 564 }
 565
 566 static connman_bool_t technology_supported(enum connman_service_type type)
 567 {
 568         switch (type) {
 569         case CONNMAN_SERVICE_TYPE_UNKNOWN:
 570         case CONNMAN_SERVICE_TYPE_SYSTEM:
 571         case CONNMAN_SERVICE_TYPE_GPS:
 572         case CONNMAN_SERVICE_TYPE_VPN:
 573         case CONNMAN_SERVICE_TYPE_GADGET:
 574                 return FALSE;
 575         case CONNMAN_SERVICE_TYPE_ETHERNET:
 576         case CONNMAN_SERVICE_TYPE_WIFI:
 577         case CONNMAN_SERVICE_TYPE_WIMAX:
 578         case CONNMAN_SERVICE_TYPE_BLUETOOTH:
 579         case CONNMAN_SERVICE_TYPE_CELLULAR:
 580                 break;
 581         }
 582
 583         return TRUE;
 584 }
 585
 586 connman_bool_t __connman_notifier_is_registered(enum connman_service_type type)
 587 {
 588         DBG("type %d", type);
 589
 590         if (technology_supported(type) == FALSE)
 591                 return FALSE;
 592
 593         __sync_synchronize();
 594         if (registered[type] > 0)
 595                 return TRUE;
 596
 597         return FALSE;
 598 }
 599
 600 connman_bool_t __connman_notifier_is_enabled(enum connman_service_type type)
 601 {
 602         DBG("type %d", type);
 603
 604         if (technology_supported(type) == FALSE)
 605                 return FALSE;
 606
 607         __sync_synchronize();
 608         if (enabled[type] > 0)
 609                 return TRUE;
 610
 611         return FALSE;
 612 }
 613
 614 int __connman_notifier_init(void)
 615 {
 616         DBG("");
 617
 618         connection = connman_dbus_get_connection();
 619
 620         service_hash = g_hash_table_new_full(g_direct_hash, g_direct_equal,
 621                                                 NULL, NULL);
 622
 623
 624         return 0;
 625 }
 626
 627 void __connman_notifier_cleanup(void)
 628 {
 629         DBG("");
 630
 631         g_hash_table_destroy(service_hash);
 632         service_hash = NULL;
 633
 634         dbus_connection_unref(connection);
 635 }