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