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