vcs.maemo.org Git - connman/blob - plugins/rtnllink.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 <stdio.h>
  27 #include <unistd.h>
  28 #include <string.h>
  29 #include <sys/stat.h>
  30 #include <sys/ioctl.h>
  31 #include <sys/socket.h>
  32 #include <linux/if_arp.h>
  33 #include <linux/wireless.h>
  34
  35 #include <connman/plugin.h>
  36 #include <connman/device.h>
  37 #include <connman/rtnl.h>
  38 #include <connman/log.h>
  39
  40 #include "inet.h"
  41
  42 static GSList *device_list = NULL;
  43
  44 static struct connman_device *find_device(int index)
  45 {
  46         GSList *list;
  47
  48         for (list = device_list; list; list = list->next) {
  49                 struct connman_device *device = list->data;
  50
  51                 if (connman_device_get_index(device) == index)
  52                         return device;
  53         }
  54
  55         return NULL;
  56 }
  57
  58 static void rtnllink_newlink(unsigned short type, int index,
  59                                         unsigned flags, unsigned change)
  60 {
  61         enum connman_device_type devtype = CONNMAN_DEVICE_TYPE_UNKNOWN;
  62         struct connman_device *device;
  63         gchar *name, *devname;
  64
  65         DBG("index %d", index);
  66
  67         device = find_device(index);
  68         if (device != NULL)
  69                 return;
  70
  71         devname = inet_index2name(index);
  72
  73         if (type == ARPHRD_ETHER) {
  74                 char bridge_path[PATH_MAX], wimax_path[PATH_MAX];
  75                 struct stat st;
  76                 struct iwreq iwr;
  77                 int sk;
  78
  79                 snprintf(bridge_path, PATH_MAX,
  80                                         "/sys/class/net/%s/bridge", devname);
  81                 snprintf(wimax_path, PATH_MAX,
  82                                         "/sys/class/net/%s/wimax", devname);
  83
  84                 memset(&iwr, 0, sizeof(iwr));
  85                 strncpy(iwr.ifr_ifrn.ifrn_name, devname, IFNAMSIZ);
  86
  87                 sk = socket(PF_INET, SOCK_DGRAM, 0);
  88
  89                 if (g_str_has_prefix(devname, "bnep") == TRUE)
  90                         devtype = CONNMAN_DEVICE_TYPE_UNKNOWN;
  91                 else if (stat(bridge_path, &st) == 0 && (st.st_mode & S_IFDIR))
  92                         devtype = CONNMAN_DEVICE_TYPE_UNKNOWN;
  93                 else if (stat(wimax_path, &st) == 0 && (st.st_mode & S_IFDIR))
  94                         devtype = CONNMAN_DEVICE_TYPE_WIMAX;
  95                 else if (ioctl(sk, SIOCGIWNAME, &iwr) == 0)
  96                         devtype = CONNMAN_DEVICE_TYPE_UNKNOWN;
  97                 else
  98                         devtype = CONNMAN_DEVICE_TYPE_ETHERNET;
  99
 100                 close(sk);
 101         }
 102
 103         if (devtype == CONNMAN_DEVICE_TYPE_UNKNOWN) {
 104                 g_free(devname);
 105                 return;
 106         }
 107
 108         name = inet_index2ident(index, "dev_");
 109
 110         device = connman_device_create(name, devtype);
 111         if (device == NULL) {
 112                 g_free(devname);
 113                 g_free(name);
 114                 return;
 115         }
 116
 117         connman_device_set_index(device, index);
 118         connman_device_set_interface(device, devname);
 119
 120         g_free(devname);
 121         g_free(name);
 122
 123         if (connman_device_register(device) < 0) {
 124                 connman_device_unref(device);
 125                 return;
 126         }
 127
 128         device_list = g_slist_append(device_list, device);
 129 }
 130
 131 static void rtnllink_dellink(unsigned short type, int index,
 132                                         unsigned flags, unsigned change)
 133 {
 134         struct connman_device *device;
 135
 136         DBG("index %d", index);
 137
 138         device = find_device(index);
 139         if (device == NULL)
 140                 return;
 141
 142         device_list = g_slist_remove(device_list, device);
 143
 144         connman_device_unregister(device);
 145         connman_device_unref(device);
 146 }
 147
 148 static struct connman_rtnl rtnllink_rtnl = {
 149         .name           = "rtnllink",
 150         .newlink        = rtnllink_newlink,
 151         .dellink        = rtnllink_dellink,
 152 };
 153
 154 static int rtnllink_init(void)
 155 {
 156         int err;
 157
 158         err = connman_rtnl_register(&rtnllink_rtnl);
 159         if (err < 0)
 160                 return err;
 161
 162         connman_rtnl_send_getlink();
 163
 164         return 0;
 165 }
 166
 167 static void rtnllink_exit(void)
 168 {
 169         GSList *list;
 170
 171         connman_rtnl_unregister(&rtnllink_rtnl);
 172
 173         for (list = device_list; list; list = list->next) {
 174                 struct connman_device *device = list->data;
 175
 176                 connman_device_unregister(device);
 177                 connman_device_unref(device);
 178         }
 179
 180         g_slist_free(device_list);
 181         device_list = NULL;
 182 }
 183
 184 CONNMAN_PLUGIN_DEFINE(rtnllink, "RTNL link detection plugin", VERSION,
 185                                                 rtnllink_init, rtnllink_exit)