plugins/resolvconf.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 <unistd.h>
  28 #include <stdlib.h>
  29
  30 #define CONNMAN_API_SUBJECT_TO_CHANGE
  31 #include <connman/plugin.h>
  32 #include <connman/resolver.h>
  33 #include <connman/log.h>
  34
  35 #include <glib.h>
  36
  37 static int resolvconf_append(const char *interface, const char *domain,
  38                                                         const char *server)
  39 {
  40         char *cmd;
  41         int err;
  42
  43         DBG("interface %s server %s", interface, server);
  44
  45         if (access(RESOLVCONF, X_OK) < 0)
  46                 return -errno;
  47
  48         if (interface == NULL)
  49                 return 0;
  50
  51         cmd = g_strdup_printf("echo \"nameserver %s\" | %s -a %s",
  52                                                 server, RESOLVCONF, interface);
  53
  54         DBG("%s", cmd);
  55
  56         err = system(cmd);
  57
  58         g_free(cmd);
  59
  60         return err;
  61 }
  62
  63 static int resolvconf_remove(const char *interface, const char *domain,
  64                                                         const char *server)
  65 {
  66         char *cmd;
  67         int err;
  68
  69         DBG("interface %s server %s", interface, server);
  70
  71         if (interface == NULL)
  72                 return 0;
  73
  74         cmd = g_strdup_printf("%s -d %s", RESOLVCONF, interface);
  75
  76         DBG("%s", cmd);
  77
  78         err = system(cmd);
  79
  80         g_free(cmd);
  81
  82         return err;
  83 }
  84
  85 static struct connman_resolver resolvconf_resolver = {
  86         .name           = "resolvconf",
  87         .priority       = CONNMAN_RESOLVER_PRIORITY_DEFAULT,
  88         .append         = resolvconf_append,
  89         .remove         = resolvconf_remove,
  90 };
  91
  92 static int resolvconf_init(void)
  93 {
  94         return connman_resolver_register(&resolvconf_resolver);
  95 }
  96
  97 static void resolvconf_exit(void)
  98 {
  99         connman_resolver_unregister(&resolvconf_resolver);
 100 }
 101
 102 CONNMAN_PLUGIN_DEFINE(resolvconf, "Name resolver plugin", VERSION,
 103                 CONNMAN_PLUGIN_PRIORITY_DEFAULT, resolvconf_init, resolvconf_exit)