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