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 *device_table;
  33 static GSList *technology_list = NULL;
  34
  35 struct connman_technology {
  36         gint refcount;
  37         enum connman_service_type type;
  38         char *path;
  39         GSList *device_list;
  40 };
  41
  42 void __connman_technology_list(DBusMessageIter *iter, void *user_data)
  43 {
  44         GSList *list;
  45
  46         for (list = technology_list; list; list = list->next) {
  47                 struct connman_technology *technology = list->data;
  48
  49                 if (technology->path == NULL)
  50                         continue;
  51
  52                 dbus_message_iter_append_basic(iter, DBUS_TYPE_OBJECT_PATH,
  53                                                         &technology->path);
  54         }
  55 }
  56
  57 static void technologies_changed(void)
  58 {
  59         connman_dbus_property_changed_array(CONNMAN_MANAGER_PATH,
  60                         CONNMAN_MANAGER_INTERFACE, "Technologies",
  61                         DBUS_TYPE_OBJECT_PATH, __connman_technology_list, NULL);
  62 }
  63
  64 static void device_list(DBusMessageIter *iter, void *user_data)
  65 {
  66         struct connman_technology *technology = user_data;
  67         GSList *list;
  68
  69         for (list = technology->device_list; list; list = list->next) {
  70                 struct connman_device *device = list->data;
  71                 const char *path;
  72
  73                 path = connman_device_get_path(device);
  74                 if (path == NULL)
  75                         continue;
  76
  77                 dbus_message_iter_append_basic(iter, DBUS_TYPE_OBJECT_PATH,
  78                                                                         &path);
  79         }
  80 }
  81
  82 static void devices_changed(struct connman_technology *technology)
  83 {
  84         connman_dbus_property_changed_array(technology->path,
  85                         CONNMAN_TECHNOLOGY_INTERFACE, "Devices",
  86                         DBUS_TYPE_OBJECT_PATH, device_list, technology);
  87 }
  88
  89 static const char *get_name(enum connman_service_type type)
  90 {
  91         switch (type) {
  92         case CONNMAN_SERVICE_TYPE_UNKNOWN:
  93         case CONNMAN_SERVICE_TYPE_SYSTEM:
  94         case CONNMAN_SERVICE_TYPE_GPS:
  95         case CONNMAN_SERVICE_TYPE_VPN:
  96                 break;
  97         case CONNMAN_SERVICE_TYPE_ETHERNET:
  98                 return "Wired";
  99         case CONNMAN_SERVICE_TYPE_WIFI:
 100                 return "WiFi";
 101         case CONNMAN_SERVICE_TYPE_WIMAX:
 102                 return "WiMAX";
 103         case CONNMAN_SERVICE_TYPE_BLUETOOTH:
 104                 return "Bluetooth";
 105         case CONNMAN_SERVICE_TYPE_CELLULAR:
 106                 return "3G";
 107         }
 108
 109         return NULL;
 110 }
 111
 112 static DBusMessage *get_properties(DBusConnection *conn,
 113                                         DBusMessage *message, void *user_data)
 114 {
 115         struct connman_technology *technology = user_data;
 116         DBusMessage *reply;
 117         DBusMessageIter array, dict;
 118         const char *str;
 119
 120         reply = dbus_message_new_method_return(message);
 121         if (reply == NULL)
 122                 return NULL;
 123
 124         dbus_message_iter_init_append(reply, &array);
 125
 126         connman_dbus_dict_open(&array, &dict);
 127
 128         str = get_name(technology->type);
 129         if (str != NULL)
 130                 connman_dbus_dict_append_basic(&dict, "Name",
 131                                                 DBUS_TYPE_STRING, &str);
 132
 133         str = __connman_service_type2string(technology->type);
 134         if (str != NULL)
 135                 connman_dbus_dict_append_basic(&dict, "Type",
 136                                                 DBUS_TYPE_STRING, &str);
 137
 138         connman_dbus_dict_append_array(&dict, "Devices",
 139                         DBUS_TYPE_OBJECT_PATH, device_list, technology);
 140
 141         connman_dbus_dict_close(&array, &dict);
 142
 143         return reply;
 144 }
 145
 146 static GDBusMethodTable technology_methods[] = {
 147         { "GetProperties", "", "a{sv}", get_properties },
 148         { },
 149 };
 150
 151 static GDBusSignalTable technology_signals[] = {
 152         { "PropertyChanged", "sv" },
 153         { },
 154 };
 155
 156 static struct connman_technology *technology_find(enum connman_service_type type)
 157 {
 158         GSList *list;
 159
 160         DBG("type %d", type);
 161
 162         for (list = technology_list; list; list = list->next) {
 163                 struct connman_technology *technology = list->data;
 164
 165                 if (technology->type == type)
 166                         return technology;
 167         }
 168
 169         return NULL;
 170 }
 171
 172 static struct connman_technology *technology_get(enum connman_service_type type)
 173 {
 174         static unsigned int counter = 0;
 175         struct connman_technology *technology;
 176
 177         DBG("type %d", type);
 178
 179         technology = technology_find(type);
 180         if (technology != NULL) {
 181                 g_atomic_int_inc(&technology->refcount);
 182                 goto done;
 183         }
 184
 185         technology = g_try_new0(struct connman_technology, 1);
 186         if (technology == NULL)
 187                 return NULL;
 188
 189         technology->refcount = 1;
 190
 191         technology->type = type;
 192         technology->path = g_strdup_printf("%s/technology%d",
 193                                                 CONNMAN_PATH, counter++);
 194
 195         if (g_dbus_register_interface(connection, technology->path,
 196                                         CONNMAN_TECHNOLOGY_INTERFACE,
 197                                         technology_methods, technology_signals,
 198                                         NULL, technology, NULL) == FALSE) {
 199                 connman_error("Failed to register %s", technology->path);
 200                 g_free(technology);
 201                 return NULL;
 202         }
 203
 204         technology_list = g_slist_append(technology_list, technology);
 205
 206         technologies_changed();
 207
 208 done:
 209         DBG("technology %p", technology);
 210
 211         return technology;
 212 }
 213
 214 static void technology_put(struct connman_technology *technology)
 215 {
 216         DBG("technology %p", technology);
 217
 218         if (g_atomic_int_dec_and_test(&technology->refcount) == FALSE)
 219                 return;
 220
 221         technology_list = g_slist_remove(technology_list, technology);
 222
 223         technologies_changed();
 224
 225         g_dbus_unregister_interface(connection, technology->path,
 226                                                 CONNMAN_TECHNOLOGY_INTERFACE);
 227
 228         g_free(technology->path);
 229         g_free(technology);
 230 }
 231
 232 static void unregister_device(gpointer data)
 233 {
 234         struct connman_technology *technology = data;
 235
 236         DBG("technology %p", technology);
 237
 238         technology_put(technology);
 239 }
 240
 241 int __connman_technology_add_device(struct connman_device *device)
 242 {
 243         struct connman_technology *technology;
 244         enum connman_service_type type;
 245
 246         DBG("device %p", device);
 247
 248         type = __connman_device_get_service_type(device);
 249
 250         technology = technology_get(type);
 251         if (technology == NULL)
 252                 return -ENXIO;
 253
 254         g_hash_table_insert(device_table, device, technology);
 255
 256         technology->device_list = g_slist_append(technology->device_list,
 257                                                                 device);
 258
 259         devices_changed(technology);
 260
 261         return 0;
 262 }
 263
 264 int __connman_technology_remove_device(struct connman_device *device)
 265 {
 266         struct connman_technology *technology;
 267
 268         DBG("device %p", device);
 269
 270         technology = g_hash_table_lookup(device_table, device);
 271         if (technology == NULL)
 272                 return -ENXIO;
 273
 274         technology->device_list = g_slist_remove(technology->device_list,
 275                                                                 device);
 276
 277         devices_changed(technology);
 278
 279         g_hash_table_remove(device_table, device);
 280
 281         return 0;
 282 }
 283
 284 int __connman_technology_init(void)
 285 {
 286         DBG("");
 287
 288         connection = connman_dbus_get_connection();
 289
 290         device_table = g_hash_table_new_full(g_direct_hash, g_direct_equal,
 291                                                 NULL, unregister_device);
 292
 293         return 0;
 294 }
 295
 296 void __connman_technology_cleanup(void)
 297 {
 298         DBG("");
 299
 300         g_hash_table_destroy(device_table);
 301
 302         dbus_connection_unref(connection);
 303 }