src/service.c

   1 /*
   2  *
   3  *  Connection Manager
   4  *
   5  *  Copyright (C) 2007-2009  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 GSequence *service_list = NULL;
  33 static GHashTable *service_hash = NULL;
  34
  35 struct connman_service {
  36         gint refcount;
  37         char *identifier;
  38         char *path;
  39         enum connman_service_type type;
  40         enum connman_service_mode mode;
  41         enum connman_service_security security;
  42         enum connman_service_state state;
  43         connman_uint8_t strength;
  44         connman_bool_t favorite;
  45         unsigned int order;
  46         char *name;
  47         struct connman_device *device;
  48 };
  49
  50 static void append_path(gpointer value, gpointer user_data)
  51 {
  52         struct connman_service *service = value;
  53         DBusMessageIter *iter = user_data;
  54
  55         if (service->path == NULL)
  56                 return;
  57
  58         dbus_message_iter_append_basic(iter, DBUS_TYPE_OBJECT_PATH,
  59                                                         &service->path);
  60 }
  61
  62 void __connman_service_list(DBusMessageIter *iter)
  63 {
  64         DBG("");
  65
  66         g_sequence_foreach(service_list, append_path, iter);
  67 }
  68
  69 static const char *type2string(enum connman_service_type type)
  70 {
  71         switch (type) {
  72         case CONNMAN_SERVICE_TYPE_UNKNOWN:
  73                 break;
  74         case CONNMAN_SERVICE_TYPE_ETHERNET:
  75                 return "ethernet";
  76         case CONNMAN_SERVICE_TYPE_WIFI:
  77                 return "wifi";
  78         case CONNMAN_SERVICE_TYPE_WIMAX:
  79                 return "wimax";
  80         }
  81
  82         return NULL;
  83 }
  84
  85 static const char *mode2string(enum connman_service_mode mode)
  86 {
  87         switch (mode) {
  88         case CONNMAN_SERVICE_MODE_UNKNOWN:
  89                 break;
  90         case CONNMAN_SERVICE_MODE_MANAGED:
  91                 return "managed";
  92         case CONNMAN_SERVICE_MODE_ADHOC:
  93                 return "adhoc";
  94         }
  95
  96         return NULL;
  97 }
  98
  99 static const char *security2string(enum connman_service_security security)
 100 {
 101         switch (security) {
 102         case CONNMAN_SERVICE_SECURITY_UNKNOWN:
 103                 break;
 104         case CONNMAN_SERVICE_SECURITY_NONE:
 105                 return "none";
 106         case CONNMAN_SERVICE_SECURITY_WEP:
 107                 return "wep";
 108         case CONNMAN_SERVICE_SECURITY_WPA:
 109                 return "wpa";
 110         case CONNMAN_SERVICE_SECURITY_WPA2:
 111                 return "wpa2";
 112         }
 113
 114         return NULL;
 115 }
 116
 117 static const char *state2string(enum connman_service_state state)
 118 {
 119         switch (state) {
 120         case CONNMAN_SERVICE_STATE_UNKNOWN:
 121                 break;
 122         case CONNMAN_SERVICE_STATE_IDLE:
 123                 return "idle";
 124         case CONNMAN_SERVICE_STATE_CARRIER:
 125                 return "carrier";
 126         case CONNMAN_SERVICE_STATE_ASSOCIATION:
 127                 return "association";
 128         case CONNMAN_SERVICE_STATE_CONFIGURATION:
 129                 return "configuration";
 130         case CONNMAN_SERVICE_STATE_READY:
 131                 return "ready";
 132         case CONNMAN_SERVICE_STATE_DISCONNECT:
 133                 return "disconnect";
 134         case CONNMAN_SERVICE_STATE_FAILURE:
 135                 return "failure";
 136         }
 137
 138         return NULL;
 139 }
 140
 141 static void state_changed(struct connman_service *service)
 142 {
 143         DBusMessage *signal;
 144         DBusMessageIter entry;
 145         const char *str;
 146
 147         if (service->path == NULL)
 148                 return;
 149
 150         str = state2string(service->state);
 151         if (str == NULL)
 152                 return;
 153
 154         signal = dbus_message_new_signal(service->path,
 155                                 CONNMAN_SERVICE_INTERFACE, "PropertyChanged");
 156         if (signal == NULL)
 157                 return;
 158
 159         dbus_message_iter_init_append(signal, &entry);
 160         connman_dbus_dict_append_variant(&entry, "State",
 161                                                 DBUS_TYPE_STRING, &str);
 162         g_dbus_send_message(connection, signal);
 163 }
 164
 165 static DBusMessage *get_properties(DBusConnection *conn,
 166                                         DBusMessage *msg, void *data)
 167 {
 168         struct connman_service *service = data;
 169         DBusMessage *reply;
 170         DBusMessageIter array, dict;
 171         const char *str;
 172
 173         DBG("conn %p", conn);
 174
 175         reply = dbus_message_new_method_return(msg);
 176         if (reply == NULL)
 177                 return NULL;
 178
 179         dbus_message_iter_init_append(reply, &array);
 180
 181         dbus_message_iter_open_container(&array, DBUS_TYPE_ARRAY,
 182                         DBUS_DICT_ENTRY_BEGIN_CHAR_AS_STRING
 183                         DBUS_TYPE_STRING_AS_STRING DBUS_TYPE_VARIANT_AS_STRING
 184                         DBUS_DICT_ENTRY_END_CHAR_AS_STRING, &dict);
 185
 186         str = type2string(service->type);
 187         if (str != NULL)
 188                 connman_dbus_dict_append_variant(&dict, "Type",
 189                                                 DBUS_TYPE_STRING, &str);
 190
 191         str = mode2string(service->mode);
 192         if (str != NULL)
 193                 connman_dbus_dict_append_variant(&dict, "Mode",
 194                                                 DBUS_TYPE_STRING, &str);
 195
 196         str = security2string(service->security);
 197         if (str != NULL)
 198                 connman_dbus_dict_append_variant(&dict, "Security",
 199                                                 DBUS_TYPE_STRING, &str);
 200
 201         str = state2string(service->state);
 202         if (str != NULL)
 203                 connman_dbus_dict_append_variant(&dict, "State",
 204                                                 DBUS_TYPE_STRING, &str);
 205
 206         if (service->strength > 0)
 207                 connman_dbus_dict_append_variant(&dict, "Strength",
 208                                         DBUS_TYPE_BYTE, &service->strength);
 209
 210         connman_dbus_dict_append_variant(&dict, "Favorite",
 211                                         DBUS_TYPE_BOOLEAN, &service->favorite);
 212
 213         if (service->name != NULL)
 214                 connman_dbus_dict_append_variant(&dict, "Name",
 215                                         DBUS_TYPE_STRING, &service->name);
 216
 217         dbus_message_iter_close_container(&array, &dict);
 218
 219         return reply;
 220 }
 221
 222 static DBusMessage *connect_service(DBusConnection *conn,
 223                                         DBusMessage *msg, void *data)
 224 {
 225         struct connman_service *service = data;
 226
 227         if (service->device != NULL) {
 228                 if (__connman_device_connect(service->device) < 0)
 229                         return __connman_error_failed(msg);
 230
 231                 service->state = CONNMAN_SERVICE_STATE_READY;
 232
 233                 state_changed(service);
 234         }
 235
 236         return __connman_error_not_supported(msg);
 237 }
 238
 239 static DBusMessage *disconnect_service(DBusConnection *conn,
 240                                         DBusMessage *msg, void *data)
 241 {
 242         struct connman_service *service = data;
 243
 244         if (service->device != NULL) {
 245                 if (__connman_device_connect(service->device) < 0)
 246                         return __connman_error_failed(msg);
 247
 248                 service->state = CONNMAN_SERVICE_STATE_IDLE;
 249
 250                 state_changed(service);
 251         }
 252
 253         return __connman_error_not_supported(msg);
 254 }
 255
 256 static DBusMessage *remove_service(DBusConnection *conn,
 257                                         DBusMessage *msg, void *data)
 258 {
 259         struct connman_service *service = data;
 260
 261         if (service->type == CONNMAN_SERVICE_TYPE_ETHERNET)
 262                 return __connman_error_not_supported(msg);
 263
 264         connman_service_set_favorite(service, FALSE);
 265
 266         return g_dbus_create_reply(msg, DBUS_TYPE_INVALID);
 267 }
 268
 269 static DBusMessage *move_before(DBusConnection *conn,
 270                                         DBusMessage *msg, void *data)
 271 {
 272         struct connman_service *service = data;
 273
 274         if (service->favorite == FALSE)
 275                 return __connman_error_not_supported(msg);
 276
 277         return __connman_error_not_implemented(msg);
 278 }
 279
 280 static DBusMessage *move_after(DBusConnection *conn,
 281                                         DBusMessage *msg, void *data)
 282 {
 283         struct connman_service *service = data;
 284
 285         if (service->favorite == FALSE)
 286                 return __connman_error_not_supported(msg);
 287
 288         return __connman_error_not_implemented(msg);
 289 }
 290
 291 static GDBusMethodTable service_methods[] = {
 292         { "GetProperties", "",  "a{sv}", get_properties     },
 293         { "Connect",       "",  "",      connect_service    },
 294         { "Disconnect",    "",  "",      disconnect_service },
 295         { "Remove",        "",  "",      remove_service     },
 296         { "MoveBefore",    "o", "",      move_before        },
 297         { "MoveAfter",     "o", "",      move_after         },
 298         { },
 299 };
 300
 301 static GDBusSignalTable service_signals[] = {
 302         { "PropertyChanged", "sv" },
 303         { },
 304 };
 305
 306 static void service_free(gpointer data)
 307 {
 308         struct connman_service *service = data;
 309         char *path = service->path;
 310
 311         DBG("service %p", service);
 312
 313         g_hash_table_remove(service_hash, service->identifier);
 314
 315         service->path = NULL;
 316
 317         if (path != NULL) {
 318                 __connman_profile_changed();
 319
 320                 g_dbus_unregister_interface(connection, path,
 321                                                 CONNMAN_SERVICE_INTERFACE);
 322                 g_free(path);
 323         }
 324
 325         g_free(service->name);
 326         g_free(service->identifier);
 327         g_free(service);
 328 }
 329
 330 /**
 331  * connman_service_put:
 332  * @service: service structure
 333  *
 334  * Release service if no longer needed
 335  */
 336 void connman_service_put(struct connman_service *service)
 337 {
 338         DBG("service %p", service);
 339
 340         if (g_atomic_int_dec_and_test(&service->refcount) == TRUE) {
 341                 GSequenceIter *iter;
 342
 343                 iter = g_hash_table_lookup(service_hash, service->identifier);
 344                 if (iter != NULL)
 345                         g_sequence_remove(iter);
 346                 else
 347                         service_free(service);
 348         }
 349 }
 350
 351 static void __connman_service_initialize(struct connman_service *service)
 352 {
 353         DBG("service %p", service);
 354
 355         service->refcount = 1;
 356
 357         service->type     = CONNMAN_SERVICE_TYPE_UNKNOWN;
 358         service->mode     = CONNMAN_SERVICE_MODE_UNKNOWN;
 359         service->security = CONNMAN_SERVICE_SECURITY_UNKNOWN;
 360         service->state    = CONNMAN_SERVICE_STATE_UNKNOWN;
 361
 362         service->favorite = FALSE;
 363
 364         service->order = 0;
 365 }
 366
 367 /**
 368  * connman_service_create:
 369  *
 370  * Allocate a new service.
 371  *
 372  * Returns: a newly-allocated #connman_service structure
 373  */
 374 struct connman_service *connman_service_create(void)
 375 {
 376         struct connman_service *service;
 377
 378         service = g_try_new0(struct connman_service, 1);
 379         if (service == NULL)
 380                 return NULL;
 381
 382         DBG("service %p", service);
 383
 384         __connman_service_initialize(service);
 385
 386         return service;
 387 }
 388
 389 /**
 390  * connman_service_ref:
 391  * @service: service structure
 392  *
 393  * Increase reference counter of service
 394  */
 395 struct connman_service *connman_service_ref(struct connman_service *service)
 396 {
 397         g_atomic_int_inc(&service->refcount);
 398
 399         return service;
 400 }
 401
 402 /**
 403  * connman_service_unref:
 404  * @service: service structure
 405  *
 406  * Decrease reference counter of service
 407  */
 408 void connman_service_unref(struct connman_service *service)
 409 {
 410         connman_service_put(service);
 411 }
 412
 413 static gint service_compare(gconstpointer a, gconstpointer b,
 414                                                         gpointer user_data)
 415 {
 416         struct connman_service *service_a = (void *) a;
 417         struct connman_service *service_b = (void *) b;
 418
 419         if (service_a->order > service_b->order)
 420                 return -1;
 421
 422         if (service_a->order < service_b->order)
 423                 return 1;
 424
 425         if (service_a->favorite == TRUE && service_b->favorite == FALSE)
 426                 return -1;
 427
 428         if (service_a->favorite == FALSE && service_b->favorite == TRUE)
 429                 return 1;
 430
 431         return (gint) service_b->strength - (gint) service_a->strength;
 432 }
 433
 434 /**
 435  * connman_service_set_favorite:
 436  * @service: service structure
 437  * @favorite: favorite value
 438  *
 439  * Change the favorite setting of service
 440  */
 441 int connman_service_set_favorite(struct connman_service *service,
 442                                                 connman_bool_t favorite)
 443 {
 444         GSequenceIter *iter;
 445
 446         iter = g_hash_table_lookup(service_hash, service->identifier);
 447         if (iter == NULL)
 448                 return -ENOENT;
 449
 450         if (service->favorite)
 451                 return -EALREADY;
 452
 453         service->favorite = favorite;
 454
 455         g_sequence_sort_changed(iter, service_compare, NULL);
 456
 457         __connman_profile_changed();
 458
 459         return 0;
 460 }
 461
 462 int __connman_service_set_carrier(struct connman_service *service,
 463                                                 connman_bool_t carrier)
 464 {
 465         if (service == NULL)
 466                 return -EINVAL;
 467
 468         switch (service->type) {
 469         case CONNMAN_SERVICE_TYPE_UNKNOWN:
 470         case CONNMAN_SERVICE_TYPE_WIFI:
 471         case CONNMAN_SERVICE_TYPE_WIMAX:
 472                 return -EINVAL;
 473         case CONNMAN_SERVICE_TYPE_ETHERNET:
 474                 break;
 475         }
 476
 477         if (carrier == TRUE)
 478                 service->state = CONNMAN_SERVICE_STATE_CARRIER;
 479         else
 480                 service->state = CONNMAN_SERVICE_STATE_IDLE;
 481
 482         state_changed(service);
 483
 484         return connman_service_set_favorite(service, carrier);
 485 }
 486
 487 int __connman_service_indicate_configuration(struct connman_service *service)
 488 {
 489         if (service == NULL)
 490                 return -EINVAL;
 491
 492         service->state = CONNMAN_SERVICE_STATE_CONFIGURATION;
 493
 494         state_changed(service);
 495
 496         return 0;
 497 }
 498
 499 int __connman_service_ready(struct connman_service *service)
 500 {
 501         if (service == NULL)
 502                 return -EINVAL;
 503
 504         service->state = CONNMAN_SERVICE_STATE_READY;
 505
 506         state_changed(service);
 507
 508         return 0;
 509 }
 510
 511 int __connman_service_disconnect(struct connman_service *service)
 512 {
 513         if (service == NULL)
 514                 return -EINVAL;
 515
 516         service->state = CONNMAN_SERVICE_STATE_DISCONNECT;
 517
 518         state_changed(service);
 519
 520         return 0;
 521 }
 522
 523 /**
 524  * connman_service_lookup:
 525  * @identifier: service identifier
 526  *
 527  * Look up a service by identifier (reference count will not be increased)
 528  */
 529 struct connman_service *connman_service_lookup(const char *identifier)
 530 {
 531         GSequenceIter *iter;
 532
 533         iter = g_hash_table_lookup(service_hash, identifier);
 534         if (iter != NULL)
 535                 return g_sequence_get(iter);
 536
 537         return NULL;
 538 }
 539
 540 /**
 541  * connman_service_get:
 542  * @identifier: service identifier
 543  *
 544  * Look up a service by identifier or create a new one if not found
 545  */
 546 struct connman_service *connman_service_get(const char *identifier)
 547 {
 548         struct connman_service *service;
 549         GSequenceIter *iter;
 550
 551         iter = g_hash_table_lookup(service_hash, identifier);
 552         if (iter != NULL) {
 553                 service = g_sequence_get(iter);
 554                 if (service != NULL)
 555                         g_atomic_int_inc(&service->refcount);
 556                 return service;
 557         }
 558
 559         service = g_try_new0(struct connman_service, 1);
 560         if (service == NULL)
 561                 return NULL;
 562
 563         DBG("service %p", service);
 564
 565         __connman_service_initialize(service);
 566
 567         service->identifier = g_strdup(identifier);
 568
 569         iter = g_sequence_insert_sorted(service_list, service,
 570                                                 service_compare, NULL);
 571
 572         g_hash_table_insert(service_hash, service->identifier, iter);
 573
 574         return service;
 575 }
 576
 577 static int service_register(struct connman_service *service)
 578 {
 579         const char *path = __connman_profile_active();
 580
 581         if (service->path != NULL)
 582                 return -EALREADY;
 583
 584         service->path = g_strdup_printf("%s/%s", path, service->identifier);
 585
 586         g_dbus_register_interface(connection, service->path,
 587                                         CONNMAN_SERVICE_INTERFACE,
 588                                         service_methods, service_signals,
 589                                                         NULL, service, NULL);
 590
 591         __connman_profile_changed();
 592
 593         return 0;
 594 }
 595
 596 /**
 597  * connman_service_lookup_from_device:
 598  * @device: device structure
 599  *
 600  * Look up a service by device (reference count will not be increased)
 601  */
 602 struct connman_service *__connman_service_lookup_from_device(struct connman_device *device)
 603 {
 604         struct connman_service *service;
 605         char *name;
 606
 607         name = g_strdup_printf("%s_%d", __connman_device_get_type(device),
 608                                         connman_device_get_index(device));
 609
 610         service = connman_service_lookup(name);
 611
 612         g_free(name);
 613
 614         return service;
 615 }
 616
 617 static enum connman_service_type convert_device_type(struct connman_device *device)
 618 {
 619         enum connman_device_type type = connman_device_get_type(device);
 620
 621         switch (type) {
 622         case CONNMAN_DEVICE_TYPE_UNKNOWN:
 623         case CONNMAN_DEVICE_TYPE_VENDOR:
 624         case CONNMAN_DEVICE_TYPE_WIFI:
 625         case CONNMAN_DEVICE_TYPE_WIMAX:
 626         case CONNMAN_DEVICE_TYPE_BLUETOOTH:
 627         case CONNMAN_DEVICE_TYPE_GPS:
 628         case CONNMAN_DEVICE_TYPE_HSO:
 629         case CONNMAN_DEVICE_TYPE_NOZOMI:
 630         case CONNMAN_DEVICE_TYPE_HUAWEI:
 631         case CONNMAN_DEVICE_TYPE_NOVATEL:
 632                 break;
 633         case CONNMAN_DEVICE_TYPE_ETHERNET:
 634                 return CONNMAN_SERVICE_TYPE_ETHERNET;
 635         }
 636
 637         return CONNMAN_SERVICE_TYPE_UNKNOWN;
 638 }
 639
 640 /**
 641  * connman_service_create_from_device:
 642  * @device: device structure
 643  *
 644  * Look up service by device and if not found, create one
 645  */
 646 struct connman_service *__connman_service_create_from_device(struct connman_device *device)
 647 {
 648         struct connman_service *service;
 649         char *name;
 650
 651         name = g_strdup_printf("%s_%d", __connman_device_get_type(device),
 652                                         connman_device_get_index(device));
 653
 654         service = connman_service_get(name);
 655         if (service == NULL)
 656                 goto done;
 657
 658         if (service->path != NULL) {
 659                 connman_service_put(service);
 660                 service = NULL;
 661                 goto done;
 662         }
 663
 664         service->type = convert_device_type(device);
 665
 666         service->device = device;
 667
 668         service_register(service);
 669
 670 done:
 671         g_free(name);
 672
 673         return service;
 674 }
 675
 676 /**
 677  * connman_service_lookup_from_network:
 678  * @device: device structure
 679  *
 680  * Look up a service by network (reference count will not be increased)
 681  */
 682 struct connman_service *__connman_service_lookup_from_network(struct connman_network *network)
 683 {
 684         struct connman_service *service;
 685         char *name;
 686
 687         name = g_strdup_printf("%s_%s", __connman_network_get_type(network),
 688                                         __connman_network_get_group(network));
 689
 690         service = connman_service_lookup(name);
 691
 692         g_free(name);
 693
 694         return service;
 695 }
 696
 697 static enum connman_service_type convert_network_type(struct connman_network *network)
 698 {
 699         enum connman_network_type type = connman_network_get_type(network);
 700
 701         switch (type) {
 702         case CONNMAN_NETWORK_TYPE_UNKNOWN:
 703         case CONNMAN_NETWORK_TYPE_VENDOR:
 704         case CONNMAN_NETWORK_TYPE_BLUETOOTH_PAN:
 705         case CONNMAN_NETWORK_TYPE_BLUETOOTH_DUN:
 706         case CONNMAN_NETWORK_TYPE_HSO:
 707                 break;
 708         case CONNMAN_NETWORK_TYPE_WIFI:
 709                 return CONNMAN_SERVICE_TYPE_WIFI;
 710         case CONNMAN_NETWORK_TYPE_WIMAX:
 711                 return CONNMAN_SERVICE_TYPE_WIMAX;
 712         }
 713
 714         return CONNMAN_SERVICE_TYPE_UNKNOWN;
 715 }
 716
 717 /**
 718  * connman_service_create_from_network:
 719  * @device: device structure
 720  *
 721  * Look up service by network and if not found, create one
 722  */
 723 struct connman_service *__connman_service_create_from_network(struct connman_network *network)
 724 {
 725         struct connman_service *service;
 726         char *name;
 727
 728         name = g_strdup_printf("%s_%s", __connman_network_get_type(network),
 729                                         __connman_network_get_group(network));
 730
 731         service = connman_service_get(name);
 732         if (service == NULL)
 733                 goto done;
 734
 735         if (service->path != NULL) {
 736                 connman_service_put(service);
 737                 service = NULL;
 738                 goto done;
 739         }
 740
 741         service->type = convert_network_type(network);
 742
 743         service_register(service);
 744
 745 done:
 746         g_free(name);
 747
 748         return service;
 749 }
 750
 751 int __connman_service_init(void)
 752 {
 753         DBG("");
 754
 755         connection = connman_dbus_get_connection();
 756
 757         service_hash = g_hash_table_new_full(g_str_hash, g_str_equal,
 758                                                                 NULL, NULL);
 759
 760         service_list = g_sequence_new(service_free);
 761
 762         return 0;
 763 }
 764
 765 void __connman_service_cleanup(void)
 766 {
 767         DBG("");
 768
 769         g_sequence_free(service_list);
 770         service_list = NULL;
 771
 772         g_hash_table_destroy(service_hash);
 773         service_hash = NULL;
 774
 775         dbus_connection_unref(connection);
 776 }