src/iface-inet.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 <errno.h>
  28 #include <unistd.h>
  29 #include <string.h>
  30 #include <sys/ioctl.h>
  31 #include <sys/socket.h>
  32 #include <net/if.h>
  33 #include <net/ethernet.h>
  34
  35 #include "connman.h"
  36
  37 int __connman_iface_create_identifier(struct connman_iface *iface)
  38 {
  39         struct ifreq ifr;
  40         struct ether_addr *eth;
  41         int sk, err;
  42
  43         DBG("iface %p", iface);
  44
  45         sk = socket(PF_INET, SOCK_DGRAM, 0);
  46         if (sk < 0)
  47                 return -EIO;
  48
  49         memset(&ifr, 0, sizeof(ifr));
  50         ifr.ifr_ifindex = iface->index;
  51
  52         err = ioctl(sk, SIOCGIFNAME, &ifr);
  53
  54         if (err == 0)
  55                 err = ioctl(sk, SIOCGIFHWADDR, &ifr);
  56
  57         close(sk);
  58
  59         if (err < 0)
  60                 return -EIO;
  61
  62         iface->identifier = malloc(18);
  63         if (iface->identifier == NULL)
  64                 return -ENOMEM;
  65
  66         eth = (void *) &ifr.ifr_hwaddr.sa_data;
  67         sprintf(iface->identifier, "%02X-%02X-%02X-%02X-%02X-%02X",
  68                                                 eth->ether_addr_octet[0],
  69                                                 eth->ether_addr_octet[1],
  70                                                 eth->ether_addr_octet[2],
  71                                                 eth->ether_addr_octet[3],
  72                                                 eth->ether_addr_octet[4],
  73                                                 eth->ether_addr_octet[5]);
  74
  75         return 0;
  76 }
  77
  78 int __connman_iface_init_via_inet(struct connman_iface *iface)
  79 {
  80         struct ifreq ifr;
  81         int sk, err;
  82
  83         DBG("iface %p", iface);
  84
  85         sk = socket(PF_INET, SOCK_DGRAM, 0);
  86         if (sk < 0)
  87                 return -EIO;
  88
  89         memset(&ifr, 0, sizeof(ifr));
  90         ifr.ifr_ifindex = iface->index;
  91
  92         err = ioctl(sk, SIOCGIFNAME, &ifr);
  93
  94         if (err == 0)
  95                 err = ioctl(sk, SIOCGIFFLAGS, &ifr);
  96
  97         close(sk);
  98
  99         if (err < 0)
 100                 return -EIO;
 101
 102         if (ifr.ifr_flags & IFF_UP)
 103                 iface->state = CONNMAN_IFACE_STATE_ENABLED;
 104         else
 105                 iface->state = CONNMAN_IFACE_STATE_OFF;
 106
 107         if (ifr.ifr_flags & IFF_RUNNING) {
 108                 if (!(iface->flags & CONNMAN_IFACE_FLAG_NOCARRIER))
 109                         iface->state = CONNMAN_IFACE_STATE_CARRIER;
 110         }
 111
 112         return 0;
 113 }
 114
 115 static int __connman_iface_up(struct connman_iface *iface)
 116 {
 117         struct ifreq ifr;
 118         int sk, err;
 119
 120         DBG("iface %p", iface);
 121
 122         sk = socket(PF_INET, SOCK_DGRAM, 0);
 123         if (sk < 0)
 124                 return -errno;
 125
 126         memset(&ifr, 0, sizeof(ifr));
 127         ifr.ifr_ifindex = iface->index;
 128
 129         if (ioctl(sk, SIOCGIFNAME, &ifr) < 0) {
 130                 err = -errno;
 131                 goto done;
 132         }
 133
 134         if (ioctl(sk, SIOCGIFFLAGS, &ifr) < 0) {
 135                 err = -errno;
 136                 goto done;
 137         }
 138
 139         if (ifr.ifr_flags & IFF_UP) {
 140                 err = -EALREADY;
 141                 goto done;
 142         }
 143
 144         ifr.ifr_flags |= IFF_UP;
 145
 146         if (ioctl(sk, SIOCSIFFLAGS, &ifr) < 0) {
 147                 err = -errno;
 148                 goto done;
 149         }
 150
 151         err = 0;
 152
 153 done:
 154         close(sk);
 155
 156         return err;
 157 }
 158
 159 static int __connman_iface_down(struct connman_iface *iface)
 160 {
 161         struct ifreq ifr;
 162         int sk, err;
 163
 164         DBG("iface %p", iface);
 165
 166         sk = socket(PF_INET, SOCK_DGRAM, 0);
 167         if (sk < 0)
 168                 return -errno;
 169
 170         memset(&ifr, 0, sizeof(ifr));
 171         ifr.ifr_ifindex = iface->index;
 172
 173         if (ioctl(sk, SIOCGIFNAME, &ifr) < 0) {
 174                 err = -errno;
 175                 goto done;
 176         }
 177
 178         if (ioctl(sk, SIOCGIFFLAGS, &ifr) < 0) {
 179                 err = -errno;
 180                 goto done;
 181         }
 182
 183         if (!(ifr.ifr_flags & IFF_UP)) {
 184                 err = -EALREADY;
 185                 goto done;
 186         }
 187
 188         ifr.ifr_flags &= ~IFF_UP;
 189
 190         if (ioctl(sk, SIOCSIFFLAGS, &ifr) < 0)
 191                 err = -errno;
 192         else
 193                 err = 0;
 194
 195 done:
 196         close(sk);
 197
 198         return err;
 199 }
 200
 201 int __connman_iface_start(struct connman_iface *iface)
 202 {
 203         int err;
 204
 205         DBG("iface %p", iface);
 206
 207         if (iface->flags & CONNMAN_IFACE_FLAG_STARTED)
 208                 return -EALREADY;
 209
 210         err = __connman_iface_up(iface);
 211
 212         if (iface->driver->start) {
 213                 err = iface->driver->start(iface);
 214                 if (err < 0)
 215                         return err;
 216         }
 217
 218         iface->flags |= CONNMAN_IFACE_FLAG_STARTED;
 219
 220         return 0;
 221 }
 222
 223 int __connman_iface_stop(struct connman_iface *iface)
 224 {
 225         int err;
 226
 227         DBG("iface %p", iface);
 228
 229         __connman_dhcp_release(iface);
 230
 231         connman_iface_clear_ipv4(iface);
 232
 233         if (iface->flags & CONNMAN_IFACE_FLAG_RUNNING) {
 234                 if (iface->driver->disconnect)
 235                         iface->driver->disconnect(iface);
 236                 iface->flags &= ~CONNMAN_IFACE_FLAG_RUNNING;
 237         }
 238
 239         if (!(iface->flags & CONNMAN_IFACE_FLAG_STARTED))
 240                 return -EINVAL;
 241
 242         if (iface->driver->stop) {
 243                 err = iface->driver->stop(iface);
 244                 if (err < 0)
 245                         return err;
 246         }
 247
 248         iface->flags &= ~CONNMAN_IFACE_FLAG_STARTED;
 249
 250         err = __connman_iface_down(iface);
 251         if (err < 0)
 252                 return err;
 253
 254         return 0;
 255 }
 256
 257 int __connman_iface_connect(struct connman_iface *iface,
 258                                         struct connman_network *network)
 259 {
 260         DBG("iface %p name %s passphrase %s", iface,
 261                                 network->identifier, network->passphrase);
 262
 263         if (iface->flags & CONNMAN_IFACE_FLAG_RUNNING) {
 264                 __connman_dhcp_release(iface);
 265
 266                 connman_iface_clear_ipv4(iface);
 267
 268                 if (iface->driver->disconnect)
 269                         iface->driver->disconnect(iface);
 270
 271                 iface->flags &= ~CONNMAN_IFACE_FLAG_RUNNING;
 272         }
 273
 274         if (iface->driver->connect)
 275                 iface->driver->connect(iface, network);
 276
 277         iface->flags |= CONNMAN_IFACE_FLAG_RUNNING;
 278
 279         return 0;
 280 }
 281
 282 int __connman_iface_disconnect(struct connman_iface *iface)
 283 {
 284         DBG("iface %p", iface);
 285
 286         __connman_dhcp_release(iface);
 287
 288         connman_iface_clear_ipv4(iface);
 289
 290         if (!(iface->flags & CONNMAN_IFACE_FLAG_RUNNING))
 291                 return -EINVAL;
 292
 293         if (iface->driver->disconnect)
 294                 iface->driver->disconnect(iface);
 295
 296         iface->flags &= ~CONNMAN_IFACE_FLAG_RUNNING;
 297
 298         return 0;
 299 }