plugins/resolvconf.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 <unistd.h>
  27 #include <stdlib.h>
  28
  29 #include <connman/plugin.h>
  30 #include <connman/driver.h>
  31 #include <connman/log.h>
  32
  33 #define RESOLVCONF "/sbin/resolvconf"
  34
  35 static int resolvconf_probe(struct connman_element *element)
  36 {
  37         const char *nameserver = NULL;
  38         struct connman_element *internet;
  39         gchar *cmd;
  40         int err;
  41
  42         DBG("element %p name %s", element, element->name);
  43
  44         if (access(RESOLVCONF, X_OK) < 0)
  45                 return -errno;
  46
  47         connman_element_get_value(element,
  48                         CONNMAN_PROPERTY_TYPE_IPV4_NAMESERVER, &nameserver);
  49
  50         if (nameserver == NULL)
  51                 return -EINVAL;
  52
  53         cmd = g_strdup_printf("echo \"nameserver %s\" | %s -a %s",
  54                                                 RESOLVCONF, nameserver,
  55                                                         element->netdev.name);
  56
  57         DBG("%s", cmd);
  58
  59         err = system(cmd);
  60
  61         g_free(cmd);
  62
  63         internet = connman_element_create();
  64
  65         internet->type = CONNMAN_ELEMENT_TYPE_INTERNET;
  66
  67         connman_element_set_data(element, internet);
  68
  69         connman_element_register(internet, element);
  70
  71         return 0;
  72 }
  73
  74 static void resolvconf_remove(struct connman_element *element)
  75 {
  76         struct connman_element *internet = connman_element_get_data(element);
  77         gchar *cmd;
  78         int err;
  79
  80         DBG("element %p name %s", element, element->name);
  81
  82         connman_element_set_data(element, NULL);
  83
  84         connman_element_unregister(internet);
  85
  86         connman_element_unref(internet);
  87
  88         cmd = g_strdup_printf("%s -d %s", RESOLVCONF, element->netdev.name);
  89
  90         DBG("%s", cmd);
  91
  92         err = system(cmd);
  93
  94         g_free(cmd);
  95 }
  96
  97 static struct connman_driver resolvconf_driver = {
  98         .name           = "resolvconf",
  99         .type           = CONNMAN_ELEMENT_TYPE_RESOLVER,
 100         .priority       = CONNMAN_DRIVER_PRIORITY_HIGH,
 101         .probe          = resolvconf_probe,
 102         .remove         = resolvconf_remove,
 103 };
 104
 105 static int resolvconf_init(void)
 106 {
 107         return connman_driver_register(&resolvconf_driver);
 108 }
 109
 110 static void resolvconf_exit(void)
 111 {
 112         connman_driver_unregister(&resolvconf_driver);
 113 }
 114
 115 CONNMAN_PLUGIN_DEFINE("resolvconf", "Name resolver plugin", VERSION,
 116                                         resolvconf_init, resolvconf_exit)