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