src/technology.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;
  31
  32 static GHashTable *rfkill_table;
  33 static GHashTable *device_table;
  34 static GSList *technology_list = NULL;
  35
  36 struct connman_rfkill {
  37         unsigned int index;
  38         enum connman_service_type type;
  39         connman_bool_t softblock;
  40         connman_bool_t hardblock;
  41 };
  42
  43 enum connman_technology_state {
  44         CONNMAN_TECHNOLOGY_STATE_UNKNOWN   = 0,
  45         CONNMAN_TECHNOLOGY_STATE_OFFLINE   = 1,
  46         CONNMAN_TECHNOLOGY_STATE_AVAILABLE = 2,
  47         CONNMAN_TECHNOLOGY_STATE_BLOCKED   = 3,
  48         CONNMAN_TECHNOLOGY_STATE_ENABLED   = 4,
  49         CONNMAN_TECHNOLOGY_STATE_CONNECTED = 5,
  50 };
  51
  52 struct connman_technology {
  53         gint refcount;
  54         enum connman_service_type type;
  55         enum connman_technology_state state;
  56         char *path;
  57         GHashTable *rfkill_list;
  58         GSList *device_list;
  59         gint enabled;
  60
  61         struct connman_technology_driver *driver;
  62         void *driver_data;
  63 };
  64
  65 static GSList *driver_list = NULL;
  66
  67 static gint compare_priority(gconstpointer a, gconstpointer b)
  68 {
  69         const struct connman_technology_driver *driver1 = a;
  70         const struct connman_technology_driver *driver2 = b;
  71
  72         return driver2->priority - driver1->priority;
  73 }
  74
  75 /**
  76  * connman_technology_driver_register:
  77  * @driver: Technology driver definition
  78  *
  79  * Register a new technology driver
  80  *
  81  * Returns: %0 on success
  82  */
  83 int connman_technology_driver_register(struct connman_technology_driver *driver)
  84 {
  85         DBG("driver %p name %s", driver, driver->name);
  86
  87         driver_list = g_slist_insert_sorted(driver_list, driver,
  88                                                         compare_priority);
  89
  90         return 0;
  91 }
  92
  93 /**
  94  * connman_technology_driver_unregister:
  95  * @driver: Technology driver definition
  96  *
  97  * Remove a previously registered technology driver
  98  */
  99 void connman_technology_driver_unregister(struct connman_technology_driver *driver)
 100 {
 101         DBG("driver %p name %s", driver, driver->name);
 102
 103         driver_list = g_slist_remove(driver_list, driver);
 104 }
 105
 106 void __connman_technology_add_interface(enum connman_service_type type,
 107                                 int index, const char *name, const char *ident)
 108 {
 109         GSList *list;
 110
 111         switch (type) {
 112         case CONNMAN_SERVICE_TYPE_UNKNOWN:
 113         case CONNMAN_SERVICE_TYPE_SYSTEM:
 114                 return;
 115         case CONNMAN_SERVICE_TYPE_ETHERNET:
 116         case CONNMAN_SERVICE_TYPE_WIFI:
 117         case CONNMAN_SERVICE_TYPE_WIMAX:
 118         case CONNMAN_SERVICE_TYPE_BLUETOOTH:
 119         case CONNMAN_SERVICE_TYPE_CELLULAR:
 120         case CONNMAN_SERVICE_TYPE_GPS:
 121         case CONNMAN_SERVICE_TYPE_VPN:
 122                 break;
 123         }
 124
 125         connman_info("Create interface %s [ %s ]", name,
 126                                 __connman_service_type2string(type));
 127
 128         for (list = technology_list; list; list = list->next) {
 129                 struct connman_technology *technology = list->data;
 130
 131                 if (technology->type != type)
 132                         continue;
 133
 134                 if (technology->driver == NULL)
 135                         continue;
 136
 137                 if (technology->driver->add_interface)
 138                         technology->driver->add_interface(technology,
 139                                                         index, name, ident);
 140         }
 141 }
 142
 143 void __connman_technology_remove_interface(enum connman_service_type type,
 144                                 int index, const char *name, const char *ident)
 145 {
 146         GSList *list;
 147
 148         switch (type) {
 149         case CONNMAN_SERVICE_TYPE_UNKNOWN:
 150         case CONNMAN_SERVICE_TYPE_SYSTEM:
 151                 return;
 152         case CONNMAN_SERVICE_TYPE_ETHERNET:
 153         case CONNMAN_SERVICE_TYPE_WIFI:
 154         case CONNMAN_SERVICE_TYPE_WIMAX:
 155         case CONNMAN_SERVICE_TYPE_BLUETOOTH:
 156         case CONNMAN_SERVICE_TYPE_CELLULAR:
 157         case CONNMAN_SERVICE_TYPE_GPS:
 158         case CONNMAN_SERVICE_TYPE_VPN:
 159                 break;
 160         }
 161
 162         connman_info("Remove interface %s [ %s ]", name,
 163                                 __connman_service_type2string(type));
 164
 165         for (list = technology_list; list; list = list->next) {
 166                 struct connman_technology *technology = list->data;
 167
 168                 if (technology->type != type)
 169                         continue;
 170
 171                 if (technology->driver == NULL)
 172                         continue;
 173
 174                 if (technology->driver->remove_interface)
 175                         technology->driver->remove_interface(technology, index);
 176         }
 177 }
 178
 179 static int set_tethering(connman_bool_t enabled)
 180 {
 181         GSList *list;
 182
 183         for (list = technology_list; list; list = list->next) {
 184                 struct connman_technology *technology = list->data;
 185
 186                 if (technology->driver == NULL)
 187                         continue;
 188
 189                 if (technology->driver->set_tethering)
 190                         technology->driver->set_tethering(technology, enabled);
 191         }
 192
 193         return 0;
 194 }
 195
 196 int __connman_technology_enable_tethering(void)
 197 {
 198         return set_tethering(TRUE);
 199 }
 200
 201 int __connman_technology_disable_tethering(void)
 202 {
 203         return set_tethering(FALSE);
 204 }
 205
 206 static void free_rfkill(gpointer data)
 207 {
 208         struct connman_rfkill *rfkill = data;
 209
 210         g_free(rfkill);
 211 }
 212
 213 void __connman_technology_list(DBusMessageIter *iter, void *user_data)
 214 {
 215         GSList *list;
 216
 217         for (list = technology_list; list; list = list->next) {
 218                 struct connman_technology *technology = list->data;
 219
 220                 if (technology->path == NULL)
 221                         continue;
 222
 223                 dbus_message_iter_append_basic(iter, DBUS_TYPE_OBJECT_PATH,
 224                                                         &technology->path);
 225         }
 226 }
 227
 228 static void technologies_changed(void)
 229 {
 230         connman_dbus_property_changed_array(CONNMAN_MANAGER_PATH,
 231                         CONNMAN_MANAGER_INTERFACE, "Technologies",
 232                         DBUS_TYPE_OBJECT_PATH, __connman_technology_list, NULL);
 233 }
 234
 235 static void device_list(DBusMessageIter *iter, void *user_data)
 236 {
 237         struct connman_technology *technology = user_data;
 238         GSList *list;
 239
 240         for (list = technology->device_list; list; list = list->next) {
 241                 struct connman_device *device = list->data;
 242                 const char *path;
 243
 244                 path = connman_device_get_path(device);
 245                 if (path == NULL)
 246                         continue;
 247
 248                 dbus_message_iter_append_basic(iter, DBUS_TYPE_OBJECT_PATH,
 249                                                                         &path);
 250         }
 251 }
 252
 253 static void devices_changed(struct connman_technology *technology)
 254 {
 255         connman_dbus_property_changed_array(technology->path,
 256                         CONNMAN_TECHNOLOGY_INTERFACE, "Devices",
 257                         DBUS_TYPE_OBJECT_PATH, device_list, technology);
 258 }
 259
 260 static const char *state2string(enum connman_technology_state state)
 261 {
 262         switch (state) {
 263         case CONNMAN_TECHNOLOGY_STATE_UNKNOWN:
 264                 break;
 265         case CONNMAN_TECHNOLOGY_STATE_OFFLINE:
 266                 return "offline";
 267         case CONNMAN_TECHNOLOGY_STATE_AVAILABLE:
 268                 return "available";
 269         case CONNMAN_TECHNOLOGY_STATE_BLOCKED:
 270                 return "blocked";
 271         case CONNMAN_TECHNOLOGY_STATE_ENABLED:
 272                 return "enabled";
 273         case CONNMAN_TECHNOLOGY_STATE_CONNECTED:
 274                 return "connected";
 275         }
 276
 277         return NULL;
 278 }
 279
 280 static void state_changed(struct connman_technology *technology)
 281 {
 282         const char *str;
 283
 284         str = state2string(technology->state);
 285         if (str == NULL)
 286                 return;
 287
 288         connman_dbus_property_changed_basic(technology->path,
 289                                 CONNMAN_TECHNOLOGY_INTERFACE, "State",
 290                                                 DBUS_TYPE_STRING, &str);
 291 }
 292
 293 static const char *get_name(enum connman_service_type type)
 294 {
 295         switch (type) {
 296         case CONNMAN_SERVICE_TYPE_UNKNOWN:
 297         case CONNMAN_SERVICE_TYPE_SYSTEM:
 298         case CONNMAN_SERVICE_TYPE_GPS:
 299         case CONNMAN_SERVICE_TYPE_VPN:
 300                 break;
 301         case CONNMAN_SERVICE_TYPE_ETHERNET:
 302                 return "Wired";
 303         case CONNMAN_SERVICE_TYPE_WIFI:
 304                 return "WiFi";
 305         case CONNMAN_SERVICE_TYPE_WIMAX:
 306                 return "WiMAX";
 307         case CONNMAN_SERVICE_TYPE_BLUETOOTH:
 308                 return "Bluetooth";
 309         case CONNMAN_SERVICE_TYPE_CELLULAR:
 310                 return "3G";
 311         }
 312
 313         return NULL;
 314 }
 315
 316 static DBusMessage *get_properties(DBusConnection *conn,
 317                                         DBusMessage *message, void *user_data)
 318 {
 319         struct connman_technology *technology = user_data;
 320         DBusMessage *reply;
 321         DBusMessageIter array, dict;
 322         const char *str;
 323
 324         reply = dbus_message_new_method_return(message);
 325         if (reply == NULL)
 326                 return NULL;
 327
 328         dbus_message_iter_init_append(reply, &array);
 329
 330         connman_dbus_dict_open(&array, &dict);
 331
 332         str = state2string(technology->state);
 333         if (str != NULL)
 334                 connman_dbus_dict_append_basic(&dict, "State",
 335                                                 DBUS_TYPE_STRING, &str);
 336
 337         str = get_name(technology->type);
 338         if (str != NULL)
 339                 connman_dbus_dict_append_basic(&dict, "Name",
 340                                                 DBUS_TYPE_STRING, &str);
 341
 342         str = __connman_service_type2string(technology->type);
 343         if (str != NULL)
 344                 connman_dbus_dict_append_basic(&dict, "Type",
 345                                                 DBUS_TYPE_STRING, &str);
 346
 347         connman_dbus_dict_append_array(&dict, "Devices",
 348                         DBUS_TYPE_OBJECT_PATH, device_list, technology);
 349
 350         connman_dbus_dict_close(&array, &dict);
 351
 352         return reply;
 353 }
 354
 355 static GDBusMethodTable technology_methods[] = {
 356         { "GetProperties", "", "a{sv}", get_properties },
 357         { },
 358 };
 359
 360 static GDBusSignalTable technology_signals[] = {
 361         { "PropertyChanged", "sv" },
 362         { },
 363 };
 364
 365 static struct connman_technology *technology_find(enum connman_service_type type)
 366 {
 367         GSList *list;
 368
 369         DBG("type %d", type);
 370
 371         for (list = technology_list; list; list = list->next) {
 372                 struct connman_technology *technology = list->data;
 373
 374                 if (technology->type == type)
 375                         return technology;
 376         }
 377
 378         return NULL;
 379 }
 380
 381 static struct connman_technology *technology_get(enum connman_service_type type)
 382 {
 383         struct connman_technology *technology;
 384         const char *str;
 385         GSList *list;
 386
 387         DBG("type %d", type);
 388
 389         technology = technology_find(type);
 390         if (technology != NULL) {
 391                 g_atomic_int_inc(&technology->refcount);
 392                 goto done;
 393         }
 394
 395         str = __connman_service_type2string(type);
 396         if (str == NULL)
 397                 return NULL;
 398
 399         technology = g_try_new0(struct connman_technology, 1);
 400         if (technology == NULL)
 401                 return NULL;
 402
 403         technology->refcount = 1;
 404
 405         technology->type = type;
 406         technology->path = g_strdup_printf("%s/technology/%s",
 407                                                         CONNMAN_PATH, str);
 408
 409         technology->rfkill_list = g_hash_table_new_full(g_int_hash, g_int_equal,
 410                                                         NULL, free_rfkill);
 411         technology->device_list = NULL;
 412
 413         technology->state = CONNMAN_TECHNOLOGY_STATE_OFFLINE;
 414
 415         if (g_dbus_register_interface(connection, technology->path,
 416                                         CONNMAN_TECHNOLOGY_INTERFACE,
 417                                         technology_methods, technology_signals,
 418                                         NULL, technology, NULL) == FALSE) {
 419                 connman_error("Failed to register %s", technology->path);
 420                 g_free(technology);
 421                 return NULL;
 422         }
 423
 424         technology_list = g_slist_append(technology_list, technology);
 425
 426         technologies_changed();
 427
 428         if (technology->driver != NULL)
 429                 goto done;
 430
 431         for (list = driver_list; list; list = list->next) {
 432                 struct connman_technology_driver *driver = list->data;
 433
 434                 DBG("driver %p name %s", driver, driver->name);
 435
 436                 if (driver->type != technology->type)
 437                         continue;
 438
 439                 if (driver->probe(technology) == 0) {
 440                         technology->driver = driver;
 441                         break;
 442                 }
 443         }
 444
 445 done:
 446         DBG("technology %p", technology);
 447
 448         return technology;
 449 }
 450
 451 static void technology_put(struct connman_technology *technology)
 452 {
 453         DBG("technology %p", technology);
 454
 455         if (g_atomic_int_dec_and_test(&technology->refcount) == FALSE)
 456                 return;
 457
 458         if (technology->driver) {
 459                 technology->driver->remove(technology);
 460                 technology->driver = NULL;
 461         }
 462
 463         technology_list = g_slist_remove(technology_list, technology);
 464
 465         technologies_changed();
 466
 467         g_dbus_unregister_interface(connection, technology->path,
 468                                                 CONNMAN_TECHNOLOGY_INTERFACE);
 469
 470         g_slist_free(technology->device_list);
 471         g_hash_table_destroy(technology->rfkill_list);
 472
 473         g_free(technology->path);
 474         g_free(technology);
 475 }
 476
 477 static void unregister_technology(gpointer data)
 478 {
 479         struct connman_technology *technology = data;
 480
 481         technology_put(technology);
 482 }
 483
 484 int __connman_technology_add_device(struct connman_device *device)
 485 {
 486         struct connman_technology *technology;
 487         enum connman_service_type type;
 488
 489         DBG("device %p", device);
 490
 491         type = __connman_device_get_service_type(device);
 492         __connman_notifier_register(type);
 493
 494         technology = technology_get(type);
 495         if (technology == NULL)
 496                 return -ENXIO;
 497
 498         g_hash_table_insert(device_table, device, technology);
 499
 500         if (technology->device_list == NULL) {
 501                 if (__connman_device_get_blocked(device) == TRUE)
 502                         technology->state = CONNMAN_TECHNOLOGY_STATE_BLOCKED;
 503                 else
 504                         technology->state = CONNMAN_TECHNOLOGY_STATE_AVAILABLE;
 505
 506                 state_changed(technology);
 507         } else {
 508                 if (technology->state == CONNMAN_TECHNOLOGY_STATE_BLOCKED &&
 509                                 __connman_device_get_blocked(device) == FALSE) {
 510                         technology->state = CONNMAN_TECHNOLOGY_STATE_AVAILABLE;
 511                         state_changed(technology);
 512                 }
 513         }
 514
 515         technology->device_list = g_slist_append(technology->device_list,
 516                                                                 device);
 517         devices_changed(technology);
 518
 519         return 0;
 520 }
 521
 522 int __connman_technology_remove_device(struct connman_device *device)
 523 {
 524         struct connman_technology *technology;
 525         enum connman_service_type type;
 526
 527         DBG("device %p", device);
 528
 529         type = __connman_device_get_service_type(device);
 530         __connman_notifier_unregister(type);
 531
 532         technology = g_hash_table_lookup(device_table, device);
 533         if (technology == NULL)
 534                 return -ENXIO;
 535
 536         technology->device_list = g_slist_remove(technology->device_list,
 537                                                                 device);
 538         devices_changed(technology);
 539
 540         if (technology->device_list == NULL) {
 541                 technology->state = CONNMAN_TECHNOLOGY_STATE_OFFLINE;
 542                 state_changed(technology);
 543         }
 544
 545         g_hash_table_remove(device_table, device);
 546
 547         return 0;
 548 }
 549
 550 int __connman_technology_enable_device(struct connman_device *device)
 551 {
 552         struct connman_technology *technology;
 553         enum connman_service_type type;
 554
 555         DBG("device %p", device);
 556
 557         type = __connman_device_get_service_type(device);
 558         __connman_notifier_enable(type);
 559
 560         technology = g_hash_table_lookup(device_table, device);
 561         if (technology == NULL)
 562                 return -ENXIO;
 563
 564         if (g_atomic_int_exchange_and_add(&technology->enabled, 1) == 0) {
 565                 technology->state = CONNMAN_TECHNOLOGY_STATE_ENABLED;
 566                 state_changed(technology);
 567         }
 568
 569         return 0;
 570 }
 571
 572 int __connman_technology_disable_device(struct connman_device *device)
 573 {
 574         struct connman_technology *technology;
 575         enum connman_service_type type;
 576         GSList *list;
 577
 578         DBG("device %p", device);
 579
 580         type = __connman_device_get_service_type(device);
 581         __connman_notifier_disable(type);
 582
 583         technology = g_hash_table_lookup(device_table, device);
 584         if (technology == NULL)
 585                 return -ENXIO;
 586
 587         if (g_atomic_int_dec_and_test(&technology->enabled) == TRUE) {
 588                 technology->state = CONNMAN_TECHNOLOGY_STATE_AVAILABLE;
 589                 state_changed(technology);
 590         }
 591
 592         for (list = technology->device_list; list; list = list->next) {
 593                 struct connman_device *device = list->data;
 594
 595                 if (__connman_device_get_blocked(device) == FALSE)
 596                         return 0;
 597         }
 598
 599         technology->state = CONNMAN_TECHNOLOGY_STATE_BLOCKED;
 600         state_changed(technology);
 601
 602         return 0;
 603 }
 604
 605 int __connman_technology_add_rfkill(unsigned int index,
 606                                         enum connman_service_type type,
 607                                                 connman_bool_t softblock,
 608                                                 connman_bool_t hardblock)
 609 {
 610         struct connman_technology *technology;
 611         struct connman_rfkill *rfkill;
 612
 613         DBG("index %u type %d soft %u hard %u", index, type,
 614                                                         softblock, hardblock);
 615
 616         technology = technology_get(type);
 617         if (technology == NULL)
 618                 return -ENXIO;
 619
 620         rfkill = g_try_new0(struct connman_rfkill, 1);
 621         if (rfkill == NULL)
 622                 return -ENOMEM;
 623
 624         rfkill->index = index;
 625         rfkill->type = type;
 626         rfkill->softblock = softblock;
 627         rfkill->hardblock = hardblock;
 628
 629         g_hash_table_replace(rfkill_table, &index, technology);
 630
 631         g_hash_table_replace(technology->rfkill_list, &index, rfkill);
 632
 633         return 0;
 634 }
 635
 636 int __connman_technology_update_rfkill(unsigned int index,
 637                                                 connman_bool_t softblock,
 638                                                 connman_bool_t hardblock)
 639 {
 640         struct connman_technology *technology;
 641         struct connman_rfkill *rfkill;
 642
 643         DBG("index %u soft %u hard %u", index, softblock, hardblock);
 644
 645         technology = g_hash_table_lookup(rfkill_table, &index);
 646         if (technology == NULL)
 647                 return -ENXIO;
 648
 649         rfkill = g_hash_table_lookup(technology->rfkill_list, &index);
 650         if (rfkill == NULL)
 651                 return -ENXIO;
 652
 653         rfkill->softblock = softblock;
 654         rfkill->hardblock = hardblock;
 655
 656         return 0;
 657 }
 658
 659 int __connman_technology_remove_rfkill(unsigned int index)
 660 {
 661         struct connman_technology *technology;
 662
 663         DBG("index %u", index);
 664
 665         technology = g_hash_table_lookup(rfkill_table, &index);
 666         if (technology == NULL)
 667                 return -ENXIO;
 668
 669         g_hash_table_remove(technology->rfkill_list, &index);
 670
 671         g_hash_table_remove(rfkill_table, &index);
 672
 673         return 0;
 674 }
 675
 676 int __connman_technology_init(void)
 677 {
 678         DBG("");
 679
 680         connection = connman_dbus_get_connection();
 681
 682         rfkill_table = g_hash_table_new_full(g_int_hash, g_int_equal,
 683                                                 NULL, unregister_technology);
 684         device_table = g_hash_table_new_full(g_direct_hash, g_direct_equal,
 685                                                 NULL, unregister_technology);
 686
 687         return 0;
 688 }
 689
 690 void __connman_technology_cleanup(void)
 691 {
 692         DBG("");
 693
 694         g_hash_table_destroy(device_table);
 695         g_hash_table_destroy(rfkill_table);
 696
 697         dbus_connection_unref(connection);
 698 }