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 };
  40
  41 enum connman_technology_state {
  42         CONNMAN_TECHNOLOGY_STATE_UNKNOWN   = 0,
  43         CONNMAN_TECHNOLOGY_STATE_OFFLINE   = 1,
  44         CONNMAN_TECHNOLOGY_STATE_AVAILABLE = 2,
  45         CONNMAN_TECHNOLOGY_STATE_ENABLED   = 3,
  46         CONNMAN_TECHNOLOGY_STATE_CONNECTED = 4,
  47 };
  48
  49 struct connman_technology {
  50         gint refcount;
  51         enum connman_service_type type;
  52         enum connman_technology_state state;
  53         char *path;
  54         GHashTable *rfkill_list;
  55         GSList *device_list;
  56         gint enabled;
  57 };
  58
  59 static void free_rfkill(gpointer data)
  60 {
  61         struct connman_rfkill *rfkill = data;
  62
  63         g_free(rfkill);
  64 }
  65
  66 void __connman_technology_list(DBusMessageIter *iter, void *user_data)
  67 {
  68         GSList *list;
  69
  70         for (list = technology_list; list; list = list->next) {
  71                 struct connman_technology *technology = list->data;
  72
  73                 if (technology->path == NULL)
  74                         continue;
  75
  76                 dbus_message_iter_append_basic(iter, DBUS_TYPE_OBJECT_PATH,
  77                                                         &technology->path);
  78         }
  79 }
  80
  81 static void technologies_changed(void)
  82 {
  83         connman_dbus_property_changed_array(CONNMAN_MANAGER_PATH,
  84                         CONNMAN_MANAGER_INTERFACE, "Technologies",
  85                         DBUS_TYPE_OBJECT_PATH, __connman_technology_list, NULL);
  86 }
  87
  88 static void device_list(DBusMessageIter *iter, void *user_data)
  89 {
  90         struct connman_technology *technology = user_data;
  91         GSList *list;
  92
  93         for (list = technology->device_list; list; list = list->next) {
  94                 struct connman_device *device = list->data;
  95                 const char *path;
  96
  97                 path = connman_device_get_path(device);
  98                 if (path == NULL)
  99                         continue;
 100
 101                 dbus_message_iter_append_basic(iter, DBUS_TYPE_OBJECT_PATH,
 102                                                                         &path);
 103         }
 104 }
 105
 106 static void devices_changed(struct connman_technology *technology)
 107 {
 108         connman_dbus_property_changed_array(technology->path,
 109                         CONNMAN_TECHNOLOGY_INTERFACE, "Devices",
 110                         DBUS_TYPE_OBJECT_PATH, device_list, technology);
 111 }
 112
 113 static const char *state2string(enum connman_technology_state state)
 114 {
 115         switch (state) {
 116         case CONNMAN_TECHNOLOGY_STATE_UNKNOWN:
 117                 break;
 118         case CONNMAN_TECHNOLOGY_STATE_OFFLINE:
 119                 return "offline";
 120         case CONNMAN_TECHNOLOGY_STATE_AVAILABLE:
 121                 return "available";
 122         case CONNMAN_TECHNOLOGY_STATE_ENABLED:
 123                 return "enabled";
 124         case CONNMAN_TECHNOLOGY_STATE_CONNECTED:
 125                 return "connected";
 126         }
 127
 128         return NULL;
 129 }
 130
 131 static void state_changed(struct connman_technology *technology)
 132 {
 133         const char *str;
 134
 135         str = state2string(technology->state);
 136         if (str == NULL)
 137                 return;
 138
 139         connman_dbus_property_changed_basic(technology->path,
 140                                 CONNMAN_TECHNOLOGY_INTERFACE, "State",
 141                                                 DBUS_TYPE_STRING, &str);
 142 }
 143
 144 static const char *get_name(enum connman_service_type type)
 145 {
 146         switch (type) {
 147         case CONNMAN_SERVICE_TYPE_UNKNOWN:
 148         case CONNMAN_SERVICE_TYPE_SYSTEM:
 149         case CONNMAN_SERVICE_TYPE_GPS:
 150         case CONNMAN_SERVICE_TYPE_VPN:
 151                 break;
 152         case CONNMAN_SERVICE_TYPE_ETHERNET:
 153                 return "Wired";
 154         case CONNMAN_SERVICE_TYPE_WIFI:
 155                 return "WiFi";
 156         case CONNMAN_SERVICE_TYPE_WIMAX:
 157                 return "WiMAX";
 158         case CONNMAN_SERVICE_TYPE_BLUETOOTH:
 159                 return "Bluetooth";
 160         case CONNMAN_SERVICE_TYPE_CELLULAR:
 161                 return "3G";
 162         }
 163
 164         return NULL;
 165 }
 166
 167 static DBusMessage *get_properties(DBusConnection *conn,
 168                                         DBusMessage *message, void *user_data)
 169 {
 170         struct connman_technology *technology = user_data;
 171         DBusMessage *reply;
 172         DBusMessageIter array, dict;
 173         const char *str;
 174
 175         reply = dbus_message_new_method_return(message);
 176         if (reply == NULL)
 177                 return NULL;
 178
 179         dbus_message_iter_init_append(reply, &array);
 180
 181         connman_dbus_dict_open(&array, &dict);
 182
 183         str = state2string(technology->state);
 184         if (str != NULL)
 185                 connman_dbus_dict_append_basic(&dict, "State",
 186                                                 DBUS_TYPE_STRING, &str);
 187
 188         str = get_name(technology->type);
 189         if (str != NULL)
 190                 connman_dbus_dict_append_basic(&dict, "Name",
 191                                                 DBUS_TYPE_STRING, &str);
 192
 193         str = __connman_service_type2string(technology->type);
 194         if (str != NULL)
 195                 connman_dbus_dict_append_basic(&dict, "Type",
 196                                                 DBUS_TYPE_STRING, &str);
 197
 198         connman_dbus_dict_append_array(&dict, "Devices",
 199                         DBUS_TYPE_OBJECT_PATH, device_list, technology);
 200
 201         connman_dbus_dict_close(&array, &dict);
 202
 203         return reply;
 204 }
 205
 206 static GDBusMethodTable technology_methods[] = {
 207         { "GetProperties", "", "a{sv}", get_properties },
 208         { },
 209 };
 210
 211 static GDBusSignalTable technology_signals[] = {
 212         { "PropertyChanged", "sv" },
 213         { },
 214 };
 215
 216 static struct connman_technology *technology_find(enum connman_service_type type)
 217 {
 218         GSList *list;
 219
 220         DBG("type %d", type);
 221
 222         for (list = technology_list; list; list = list->next) {
 223                 struct connman_technology *technology = list->data;
 224
 225                 if (technology->type == type)
 226                         return technology;
 227         }
 228
 229         return NULL;
 230 }
 231
 232 static struct connman_technology *technology_get(enum connman_service_type type)
 233 {
 234         struct connman_technology *technology;
 235         const char *str;
 236
 237         DBG("type %d", type);
 238
 239         technology = technology_find(type);
 240         if (technology != NULL) {
 241                 g_atomic_int_inc(&technology->refcount);
 242                 goto done;
 243         }
 244
 245         str = __connman_service_type2string(type);
 246         if (str == NULL)
 247                 return NULL;
 248
 249         technology = g_try_new0(struct connman_technology, 1);
 250         if (technology == NULL)
 251                 return NULL;
 252
 253         technology->refcount = 1;
 254
 255         technology->type = type;
 256         technology->path = g_strdup_printf("%s/technology/%s",
 257                                                         CONNMAN_PATH, str);
 258
 259         technology->rfkill_list = g_hash_table_new_full(g_int_hash, g_int_equal,
 260                                                         NULL, free_rfkill);
 261         technology->device_list = NULL;
 262
 263         technology->state = CONNMAN_TECHNOLOGY_STATE_OFFLINE;
 264
 265         if (g_dbus_register_interface(connection, technology->path,
 266                                         CONNMAN_TECHNOLOGY_INTERFACE,
 267                                         technology_methods, technology_signals,
 268                                         NULL, technology, NULL) == FALSE) {
 269                 connman_error("Failed to register %s", technology->path);
 270                 g_free(technology);
 271                 return NULL;
 272         }
 273
 274         technology_list = g_slist_append(technology_list, technology);
 275
 276         technologies_changed();
 277
 278 done:
 279         DBG("technology %p", technology);
 280
 281         return technology;
 282 }
 283
 284 static void technology_put(struct connman_technology *technology)
 285 {
 286         DBG("technology %p", technology);
 287
 288         if (g_atomic_int_dec_and_test(&technology->refcount) == FALSE)
 289                 return;
 290
 291         technology_list = g_slist_remove(technology_list, technology);
 292
 293         technologies_changed();
 294
 295         g_dbus_unregister_interface(connection, technology->path,
 296                                                 CONNMAN_TECHNOLOGY_INTERFACE);
 297
 298         g_slist_free(technology->device_list);
 299         g_hash_table_destroy(technology->rfkill_list);
 300
 301         g_free(technology->path);
 302         g_free(technology);
 303 }
 304
 305 static void unregister_technology(gpointer data)
 306 {
 307         struct connman_technology *technology = data;
 308
 309         technology_put(technology);
 310 }
 311
 312 int __connman_technology_add_device(struct connman_device *device)
 313 {
 314         struct connman_technology *technology;
 315         enum connman_service_type type;
 316
 317         DBG("device %p", device);
 318
 319         type = __connman_device_get_service_type(device);
 320         __connman_notifier_register(type);
 321
 322         technology = technology_get(type);
 323         if (technology == NULL)
 324                 return -ENXIO;
 325
 326         g_hash_table_insert(device_table, device, technology);
 327
 328         if (technology->device_list == NULL) {
 329                 technology->state = CONNMAN_TECHNOLOGY_STATE_AVAILABLE;
 330                 state_changed(technology);
 331         }
 332
 333         technology->device_list = g_slist_append(technology->device_list,
 334                                                                 device);
 335         devices_changed(technology);
 336
 337         return 0;
 338 }
 339
 340 int __connman_technology_remove_device(struct connman_device *device)
 341 {
 342         struct connman_technology *technology;
 343         enum connman_service_type type;
 344
 345         DBG("device %p", device);
 346
 347         type = __connman_device_get_service_type(device);
 348         __connman_notifier_unregister(type);
 349
 350         technology = g_hash_table_lookup(device_table, device);
 351         if (technology == NULL)
 352                 return -ENXIO;
 353
 354         technology->device_list = g_slist_remove(technology->device_list,
 355                                                                 device);
 356         devices_changed(technology);
 357
 358         if (technology->device_list == NULL) {
 359                 technology->state = CONNMAN_TECHNOLOGY_STATE_OFFLINE;
 360                 state_changed(technology);
 361         }
 362
 363         g_hash_table_remove(device_table, device);
 364
 365         return 0;
 366 }
 367
 368 int __connman_technology_enable_device(struct connman_device *device)
 369 {
 370         struct connman_technology *technology;
 371         enum connman_service_type type;
 372
 373         DBG("device %p", device);
 374
 375         type = __connman_device_get_service_type(device);
 376         __connman_notifier_enable(type);
 377
 378         technology = g_hash_table_lookup(device_table, device);
 379         if (technology == NULL)
 380                 return -ENXIO;
 381
 382         if (g_atomic_int_exchange_and_add(&technology->enabled, 1) == 0) {
 383                 technology->state = CONNMAN_TECHNOLOGY_STATE_ENABLED;
 384                 state_changed(technology);
 385         }
 386
 387         return 0;
 388 }
 389
 390 int __connman_technology_disable_device(struct connman_device *device)
 391 {
 392         struct connman_technology *technology;
 393         enum connman_service_type type;
 394
 395         DBG("device %p", device);
 396
 397         type = __connman_device_get_service_type(device);
 398         __connman_notifier_disable(type);
 399
 400         technology = g_hash_table_lookup(device_table, device);
 401         if (technology == NULL)
 402                 return -ENXIO;
 403
 404         if (g_atomic_int_dec_and_test(&technology->enabled) == TRUE) {
 405                 technology->state = CONNMAN_TECHNOLOGY_STATE_AVAILABLE;
 406                 state_changed(technology);
 407         }
 408
 409         return 0;
 410 }
 411
 412 int __connman_technology_add_rfkill(unsigned int index,
 413                                         enum connman_service_type type,
 414                                                 connman_bool_t softblock,
 415                                                 connman_bool_t hardblock)
 416 {
 417         struct connman_technology *technology;
 418         struct connman_rfkill *rfkill;
 419
 420         DBG("index %u type %d soft %u hard %u", index, type,
 421                                                         softblock, hardblock);
 422
 423         rfkill = g_try_new0(struct connman_rfkill, 1);
 424         if (rfkill == NULL)
 425                 return -ENOMEM;
 426
 427         rfkill->index = index;
 428         rfkill->type = type;
 429
 430         technology = technology_get(type);
 431         if (technology == NULL) {
 432                 g_free(rfkill);
 433                 return -ENXIO;
 434         }
 435
 436         g_hash_table_replace(rfkill_table, &index, technology);
 437
 438         g_hash_table_replace(technology->rfkill_list, &index, rfkill);
 439
 440         return 0;
 441 }
 442
 443 int __connman_technology_update_rfkill(unsigned int index,
 444                                                 connman_bool_t softblock,
 445                                                 connman_bool_t hardblock)
 446 {
 447         struct connman_technology *technology;
 448
 449         DBG("index %u soft %u hard %u", index, softblock, hardblock);
 450
 451         technology = g_hash_table_lookup(rfkill_table, &index);
 452         if (technology == NULL)
 453                 return -ENXIO;
 454
 455         return 0;
 456 }
 457
 458 int __connman_technology_remove_rfkill(unsigned int index)
 459 {
 460         struct connman_technology *technology;
 461
 462         DBG("index %u", index);
 463
 464         technology = g_hash_table_lookup(rfkill_table, &index);
 465         if (technology == NULL)
 466                 return -ENXIO;
 467
 468         g_hash_table_remove(technology->rfkill_list, &index);
 469
 470         g_hash_table_remove(rfkill_table, &index);
 471
 472         return 0;
 473 }
 474
 475 int __connman_technology_init(void)
 476 {
 477         DBG("");
 478
 479         connection = connman_dbus_get_connection();
 480
 481         rfkill_table = g_hash_table_new_full(g_int_hash, g_int_equal,
 482                                                 NULL, unregister_technology);
 483         device_table = g_hash_table_new_full(g_direct_hash, g_direct_equal,
 484                                                 NULL, unregister_technology);
 485
 486         return 0;
 487 }
 488
 489 void __connman_technology_cleanup(void)
 490 {
 491         DBG("");
 492
 493         g_hash_table_destroy(device_table);
 494         g_hash_table_destroy(rfkill_table);
 495
 496         dbus_connection_unref(connection);
 497 }