plugins/wifi.c

   1 /*
   2  *
   3  *  Connection Manager
   4  *
   5  *  Copyright (C) 2007-2008  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 <string.h>
  27 #include <dbus/dbus.h>
  28
  29 #include <connman/plugin.h>
  30 #include <connman/driver.h>
  31 #include <connman/log.h>
  32
  33 #include "supplicant.h"
  34
  35 struct wifi_data {
  36         GStaticMutex mutex;
  37         GSList *list;
  38         gchar *identifier;
  39 };
  40
  41 static int network_probe(struct connman_element *element)
  42 {
  43         DBG("element %p name %s", element, element->name);
  44
  45         return 0;
  46 }
  47
  48 static void network_remove(struct connman_element *element)
  49 {
  50         DBG("element %p name %s", element, element->name);
  51 }
  52
  53 static int network_enable(struct connman_element *element)
  54 {
  55         char *identifier, *passphrase = NULL;
  56         unsigned char *ssid;
  57         int ssid_len;
  58
  59         DBG("element %p name %s", element, element->name);
  60
  61         if (connman_element_get_static_property(element,
  62                                         "Identifier", &identifier) == FALSE)
  63                 return -EIO;
  64
  65         if (connman_element_get_static_array_property(element,
  66                                         "SSID", &ssid, &ssid_len) == FALSE)
  67                 return -EIO;
  68
  69         if (element->parent != NULL) {
  70                 struct wifi_data *data = connman_element_get_data(element->parent);
  71
  72                 if (data != NULL) {
  73                         g_free(data->identifier);
  74                         data->identifier = g_strdup(identifier);
  75                 }
  76         }
  77
  78         DBG("identifier %s passhprase %s", identifier, passphrase);
  79
  80         if (__supplicant_connect(element, ssid, ssid_len, passphrase) < 0)
  81                 connman_error("Failed to initiate connect");
  82
  83         return 0;
  84 }
  85
  86 static int network_disable(struct connman_element *element)
  87 {
  88         DBG("element %p name %s", element, element->name);
  89
  90         connman_element_unregister_children(element);
  91
  92         __supplicant_disconnect(element);
  93
  94         return 0;
  95 }
  96
  97 static struct connman_driver network_driver = {
  98         .name           = "wifi-network",
  99         .type           = CONNMAN_ELEMENT_TYPE_NETWORK,
 100         .subtype        = CONNMAN_ELEMENT_SUBTYPE_WIFI,
 101         .probe          = network_probe,
 102         .remove         = network_remove,
 103         .enable         = network_enable,
 104         .disable        = network_disable,
 105 };
 106
 107 static struct connman_element *find_element(struct wifi_data *data,
 108                                                 const char *identifier)
 109 {
 110         GSList *list;
 111
 112         for (list = data->list; list; list = list->next) {
 113                 struct connman_element *element = list->data;
 114
 115                 if (connman_element_match_static_property(element,
 116                                         "Identifier", &identifier) == TRUE)
 117                         return element;
 118         }
 119
 120         return NULL;
 121 }
 122
 123 static void state_change(struct connman_element *parent,
 124                                                 enum supplicant_state state)
 125 {
 126         struct wifi_data *data = connman_element_get_data(parent);
 127         struct connman_element *element;
 128
 129         DBG("state %d", state);
 130
 131         if (data->identifier == NULL)
 132                 return;
 133
 134         element = find_element(data, data->identifier);
 135         if (element == NULL)
 136                 return;
 137
 138         if (state == STATE_COMPLETED) {
 139                 struct connman_element *dhcp;
 140
 141                 dhcp = connman_element_create(NULL);
 142
 143                 dhcp->type = CONNMAN_ELEMENT_TYPE_DHCP;
 144                 dhcp->index = element->index;
 145
 146                 connman_element_register(dhcp, element);
 147         }
 148 }
 149
 150 static void scan_result(struct connman_element *parent,
 151                                         struct supplicant_network *network)
 152 {
 153         struct wifi_data *data = connman_element_get_data(parent);
 154         struct connman_element *element;
 155         gchar *temp;
 156         int i;
 157
 158         DBG("network %p identifier %s", network, network->identifier);
 159
 160         if (data == NULL)
 161                 return;
 162
 163         if (network->identifier == NULL)
 164                 return;
 165
 166         if (network->identifier[0] == '\0')
 167                 return;
 168
 169         temp = g_strdup(network->identifier);
 170
 171         for (i = 0; i < strlen(temp); i++) {
 172                 if (temp[i] == ' ' || temp[i] == '.' || temp[i] == '-')
 173                         temp[i] = '_';
 174                 if (temp[i] == '(' || temp[i] == ')')
 175                         temp[i] = '_';
 176                 if (g_ascii_isprint(temp[i]) == FALSE)
 177                         temp[i] = '_';
 178                 temp[i] = g_ascii_tolower(temp[i]);
 179         }
 180
 181         g_static_mutex_lock(&data->mutex);
 182
 183         element = find_element(data, network->identifier);
 184         if (element == NULL) {
 185                 element = connman_element_create(temp);
 186
 187                 element->type = CONNMAN_ELEMENT_TYPE_NETWORK;
 188                 element->index = parent->index;
 189
 190                 data->list = g_slist_append(data->list, element);
 191
 192                 connman_element_add_static_property(element, "Identifier",
 193                                 DBUS_TYPE_STRING, &network->identifier);
 194
 195                 connman_element_add_static_array_property(element, "SSID",
 196                         DBUS_TYPE_BYTE, &network->ssid, network->ssid_len);
 197
 198                 connman_element_register(element, parent);
 199         }
 200
 201         g_static_mutex_unlock(&data->mutex);
 202
 203         g_free(temp);
 204 }
 205
 206 static struct supplicant_callback wifi_callback = {
 207         .state_change   = state_change,
 208         .scan_result    = scan_result,
 209 };
 210
 211 static int wifi_probe(struct connman_element *element)
 212 {
 213         struct wifi_data *data;
 214
 215         DBG("element %p name %s", element, element->name);
 216
 217         data = g_try_new0(struct wifi_data, 1);
 218         if (data == NULL)
 219                 return -ENOMEM;
 220
 221         g_static_mutex_init(&data->mutex);
 222
 223         connman_element_set_data(element, data);
 224
 225         return 0;
 226 }
 227
 228 static void wifi_remove(struct connman_element *element)
 229 {
 230         struct wifi_data *data = connman_element_get_data(element);
 231
 232         DBG("element %p name %s", element, element->name);
 233
 234         connman_element_set_data(element, NULL);
 235
 236         g_free(data->identifier);
 237         g_free(data);
 238 }
 239
 240 static int wifi_update(struct connman_element *element)
 241 {
 242         DBG("element %p name %s", element, element->name);
 243
 244         __supplicant_scan(element);
 245
 246         return 0;
 247 }
 248
 249 static int wifi_enable(struct connman_element *element)
 250 {
 251         int err;
 252
 253         DBG("element %p name %s", element, element->name);
 254
 255         err = __supplicant_start(element, &wifi_callback);
 256         if (err < 0)
 257                 return err;
 258
 259         __supplicant_scan(element);
 260
 261         return 0;
 262 }
 263
 264 static int wifi_disable(struct connman_element *element)
 265 {
 266         struct wifi_data *data = connman_element_get_data(element);
 267         GSList *list;
 268
 269         DBG("element %p name %s", element, element->name);
 270
 271         __supplicant_disconnect(element);
 272
 273         g_static_mutex_lock(&data->mutex);
 274
 275         for (list = data->list; list; list = list->next) {
 276                 struct connman_element *network = list->data;
 277
 278                 connman_element_unref(network);
 279         }
 280
 281         g_slist_free(data->list);
 282         data->list = NULL;
 283
 284         g_static_mutex_unlock(&data->mutex);
 285
 286         connman_element_unregister_children(element);
 287
 288         return 0;
 289 }
 290
 291 static struct connman_driver wifi_driver = {
 292         .name           = "wifi-device",
 293         .type           = CONNMAN_ELEMENT_TYPE_DEVICE,
 294         .subtype        = CONNMAN_ELEMENT_SUBTYPE_WIFI,
 295         .probe          = wifi_probe,
 296         .remove         = wifi_remove,
 297         .update         = wifi_update,
 298         .enable         = wifi_enable,
 299         .disable        = wifi_disable,
 300 };
 301
 302 static int wifi_init(void)
 303 {
 304         int err;
 305
 306         err = __supplicant_init();
 307         if (err < 0)
 308                 return err;
 309
 310         err = connman_driver_register(&network_driver);
 311         if (err < 0) {
 312                 __supplicant_exit();
 313                 return err;
 314         }
 315
 316         err = connman_driver_register(&wifi_driver);
 317         if (err < 0) {
 318                 connman_driver_unregister(&network_driver);
 319                 __supplicant_exit();
 320                 return err;
 321         }
 322
 323         return 0;
 324 }
 325
 326 static void wifi_exit(void)
 327 {
 328         connman_driver_unregister(&network_driver);
 329         connman_driver_unregister(&wifi_driver);
 330
 331         __supplicant_exit();
 332 }
 333
 334 CONNMAN_PLUGIN_DEFINE("wifi", "WiFi interface plugin", VERSION,
 335                                                         wifi_init, wifi_exit)