plugins/wifi.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 <errno.h>
  27 #include <net/if.h>
  28
  29 #ifndef IFF_LOWER_UP
  30 #define IFF_LOWER_UP    0x10000
  31 #endif
  32
  33 #include <dbus/dbus.h>
  34 #include <glib.h>
  35
  36 #define CONNMAN_API_SUBJECT_TO_CHANGE
  37 #include <connman/plugin.h>
  38 #include <connman/device.h>
  39 #include <connman/rtnl.h>
  40 #include <connman/log.h>
  41
  42 #include "supplicant.h"
  43
  44 #define CLEANUP_TIMEOUT   8     /* in seconds */
  45 #define INACTIVE_TIMEOUT  12    /* in seconds */
  46
  47 struct wifi_data {
  48         char *identifier;
  49         connman_bool_t connected;
  50         int index;
  51         unsigned flags;
  52         unsigned int watch;
  53 };
  54
  55 static int network_probe(struct connman_network *network)
  56 {
  57         DBG("network %p", network);
  58
  59         return 0;
  60 }
  61
  62 static void network_remove(struct connman_network *network)
  63 {
  64         DBG("network %p", network);
  65 }
  66
  67 static int network_connect(struct connman_network *network)
  68 {
  69         DBG("network %p", network);
  70
  71         return supplicant_connect(network);
  72 }
  73
  74 static int network_disconnect(struct connman_network *network)
  75 {
  76         DBG("network %p", network);
  77
  78         return supplicant_disconnect(network);
  79 }
  80
  81 static struct connman_network_driver network_driver = {
  82         .name           = "wifi",
  83         .type           = CONNMAN_NETWORK_TYPE_WIFI,
  84         .probe          = network_probe,
  85         .remove         = network_remove,
  86         .connect        = network_connect,
  87         .disconnect     = network_disconnect,
  88 };
  89
  90 static void wifi_newlink(unsigned flags, unsigned change, void *user_data)
  91 {
  92         struct connman_device *device = user_data;
  93         struct wifi_data *wifi = connman_device_get_data(device);
  94
  95         DBG("index %d flags %d change %d", wifi->index, flags, change);
  96
  97         if (!change)
  98                 return;
  99
 100         if ((wifi->flags & IFF_UP) != (flags & IFF_UP)) {
 101                 if (flags & IFF_UP) {
 102                         DBG("power on");
 103                         connman_device_set_powered(device, TRUE);
 104                         supplicant_scan(device);
 105                 } else {
 106                         connman_device_set_powered(device, FALSE);
 107                         DBG("power off");
 108                 }
 109         }
 110
 111         if ((wifi->flags & IFF_LOWER_UP) != (flags & IFF_LOWER_UP)) {
 112                 if (flags & IFF_LOWER_UP) {
 113                         DBG("carrier on");
 114                 } else {
 115                         DBG("carrier off");
 116                 }
 117         }
 118
 119         wifi->flags = flags;
 120 }
 121
 122 static int wifi_probe(struct connman_device *device)
 123 {
 124         struct wifi_data *wifi;
 125
 126         DBG("device %p", device);
 127
 128         wifi = g_try_new0(struct wifi_data, 1);
 129         if (wifi == NULL)
 130                 return -ENOMEM;
 131
 132         wifi->connected = FALSE;
 133
 134         connman_device_set_data(device, wifi);
 135
 136         wifi->index = connman_device_get_index(device);
 137         wifi->flags = 0;
 138
 139         wifi->watch = connman_rtnl_add_newlink_watch(wifi->index,
 140                                                         wifi_newlink, device);
 141
 142         return 0;
 143 }
 144
 145 static void wifi_remove(struct connman_device *device)
 146 {
 147         struct wifi_data *wifi = connman_device_get_data(device);
 148
 149         DBG("device %p", device);
 150
 151         connman_device_set_data(device, NULL);
 152
 153         connman_rtnl_remove_watch(wifi->watch);
 154
 155         g_free(wifi->identifier);
 156         g_free(wifi);
 157 }
 158
 159 static int wifi_enable(struct connman_device *device)
 160 {
 161         DBG("device %p", device);
 162
 163         return supplicant_start(device);
 164 }
 165
 166 static int wifi_disable(struct connman_device *device)
 167 {
 168         struct wifi_data *wifi = connman_device_get_data(device);
 169
 170         DBG("device %p", device);
 171
 172         wifi->connected = FALSE;
 173
 174         return supplicant_stop(device);
 175 }
 176
 177 static int wifi_scan(struct connman_device *device)
 178 {
 179         DBG("device %p", device);
 180
 181         return supplicant_scan(device);
 182 }
 183
 184 static struct connman_device_driver wifi_driver = {
 185         .name           = "wifi",
 186         .type           = CONNMAN_DEVICE_TYPE_WIFI,
 187         .probe          = wifi_probe,
 188         .remove         = wifi_remove,
 189         .enable         = wifi_enable,
 190         .disable        = wifi_disable,
 191         .scan           = wifi_scan,
 192 };
 193
 194 static void wifi_register(void)
 195 {
 196         DBG("");
 197
 198         if (connman_device_driver_register(&wifi_driver) < 0)
 199                 connman_error("Failed to register WiFi driver");
 200 }
 201
 202 static void wifi_unregister(void)
 203 {
 204         DBG("");
 205
 206         connman_device_driver_unregister(&wifi_driver);
 207 }
 208
 209 static struct supplicant_driver supplicant = {
 210         .name           = "wifi",
 211         .probe          = wifi_register,
 212         .remove         = wifi_unregister,
 213 };
 214
 215 static int wifi_init(void)
 216 {
 217         int err;
 218
 219         err = connman_network_driver_register(&network_driver);
 220         if (err < 0)
 221                 return err;
 222
 223         err = supplicant_register(&supplicant);
 224         if (err < 0) {
 225                 connman_network_driver_unregister(&network_driver);
 226                 return err;
 227         }
 228
 229         return 0;
 230 }
 231
 232 static void wifi_exit(void)
 233 {
 234         supplicant_unregister(&supplicant);
 235
 236         connman_network_driver_unregister(&network_driver);
 237 }
 238
 239 CONNMAN_PLUGIN_DEFINE(wifi, "WiFi interface plugin", VERSION,
 240                 CONNMAN_PLUGIN_PRIORITY_DEFAULT, wifi_init, wifi_exit)