plugins/dhclient.c

   1 /*
   2  *
   3  *  Connection Manager
   4  *
   5  *  Copyright (C) 2007-2009  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 <arpa/inet.h>
  30
  31 #include <glib.h>
  32
  33 #define CONNMAN_API_SUBJECT_TO_CHANGE
  34 #include <connman/plugin.h>
  35 #include <connman/dhcp.h>
  36 #include <connman/task.h>
  37 #include <connman/log.h>
  38
  39 static void dhclient_notify(struct connman_task *task,
  40                                         DBusMessage *msg, void *user_data)
  41 {
  42         struct connman_dhcp *dhcp = user_data;
  43         DBusMessageIter iter, dict;
  44         dbus_uint32_t pid;
  45         const char *text, *key, *value;
  46
  47         dbus_message_iter_init(msg, &iter);
  48
  49         dbus_message_iter_get_basic(&iter, &pid);
  50         dbus_message_iter_next(&iter);
  51
  52         dbus_message_iter_get_basic(&iter, &text);
  53         dbus_message_iter_next(&iter);
  54
  55         DBG("change %d to %s", pid, text);
  56
  57         dbus_message_iter_recurse(&iter, &dict);
  58
  59         while (dbus_message_iter_get_arg_type(&dict) == DBUS_TYPE_DICT_ENTRY) {
  60                 DBusMessageIter entry;
  61
  62                 dbus_message_iter_recurse(&dict, &entry);
  63                 dbus_message_iter_get_basic(&entry, &key);
  64                 dbus_message_iter_next(&entry);
  65                 dbus_message_iter_get_basic(&entry, &value);
  66
  67                 DBG("%s = %s", key, value);
  68
  69                 if (g_strcmp0(key, "new_ip_address") == 0) {
  70                         connman_dhcp_set_value(dhcp, "Address", value);
  71                 } else if (g_strcmp0(key, "new_subnet_mask") == 0) {
  72                         connman_dhcp_set_value(dhcp, "Netmask", value);
  73                 } else if (g_strcmp0(key, "new_routers") == 0) {
  74                         connman_dhcp_set_value(dhcp, "Gateway", value);
  75                 } else if (g_strcmp0(key, "new_network_number") == 0) {
  76                         connman_dhcp_set_value(dhcp, "Network", value);
  77                 } else if (g_strcmp0(key, "new_broadcast_address") == 0) {
  78                         connman_dhcp_set_value(dhcp, "Broadcast", value);
  79                 } else if (g_strcmp0(key, "new_domain_name_servers") == 0) {
  80                         connman_dhcp_set_value(dhcp, "Nameserver", value);
  81                 } else if (g_ascii_strcasecmp(key, "new_domain_name") == 0) {
  82                         connman_dhcp_set_value(dhcp, "Domainname", value);
  83                 } else if (g_ascii_strcasecmp(key, "new_domain_search") == 0) {
  84                 } else if (g_ascii_strcasecmp(key, "new_host_name") == 0) {
  85                         connman_dhcp_set_value(dhcp, "Hostname", value);
  86                 } else if (g_ascii_strcasecmp(key, "new_ntp_servers") == 0) {
  87                         connman_dhcp_set_value(dhcp, "Timeserver", value);
  88                 } else if (g_ascii_strcasecmp(key, "new_interface_mtu") == 0) {
  89                         connman_dhcp_set_value(dhcp, "MTU", value);
  90                 }
  91
  92                 dbus_message_iter_next(&dict);
  93         }
  94
  95         if (g_strcmp0(text, "PREINIT") == 0) {
  96         } else if (g_strcmp0(text, "BOUND") == 0 ||
  97                                 g_strcmp0(text, "REBOOT") == 0) {
  98                 connman_dhcp_bound(dhcp);
  99         } else if (g_strcmp0(text, "RENEW") == 0 ||
 100                                 g_strcmp0(text, "REBIND") == 0) {
 101                 connman_dhcp_renew(dhcp);
 102         } else if (g_strcmp0(text, "FAIL") == 0) {
 103                 connman_dhcp_fail(dhcp);
 104         } else {
 105         }
 106 }
 107
 108 struct dhclient_data {
 109         struct connman_task *task;
 110         struct connman_dhcp *dhcp;
 111         char *ifname;
 112 };
 113
 114 static void dhclient_died(struct connman_task *task, void *user_data)
 115 {
 116         struct dhclient_data *dhclient = user_data;
 117
 118         connman_dhcp_unref(dhclient->dhcp);
 119
 120         connman_task_destroy(dhclient->task);
 121         dhclient->task = NULL;
 122
 123         g_free(dhclient->ifname);
 124         g_free(dhclient);
 125 }
 126
 127 static void dhclient_setup(struct connman_task *task, const char *ifname)
 128 {
 129         const char *path, *intf = "org.moblin.connman.Task";
 130
 131         path = connman_task_get_path(task);
 132
 133         connman_task_add_argument(task, "-d", NULL);
 134         connman_task_add_argument(task, "-q", NULL);
 135         connman_task_add_argument(task, "-e", "BUSNAME=org.moblin.connman");
 136         connman_task_add_argument(task, "-e", "BUSINTF=%s", intf);
 137         connman_task_add_argument(task, "-e", "BUSPATH=%s", path);
 138         connman_task_add_argument(task, "-pf", "%s/dhclient.%s.pid",
 139                                                         STATEDIR, ifname);
 140         connman_task_add_argument(task, "-lf", "%s/dhclient.%s.leases",
 141                                                         STATEDIR, ifname);
 142         connman_task_add_argument(task, "-cf", "%s/dhclient.conf", SCRIPTDIR);
 143         connman_task_add_argument(task, "-sf", "%s/dhclient-script", SCRIPTDIR);
 144         connman_task_add_argument(task, ifname, NULL);
 145         connman_task_add_argument(task, "-n", NULL);
 146 }
 147
 148 static void dhclient_unlink(const char *ifname)
 149 {
 150         char *pathname;
 151
 152         pathname = g_strdup_printf("%s/dhclient.%s.pid",
 153                                                 STATEDIR, ifname);
 154         unlink(pathname);
 155         g_free(pathname);
 156
 157         pathname = g_strdup_printf("%s/dhclient.%s.leases",
 158                                                 STATEDIR, ifname);
 159         unlink(pathname);
 160         g_free(pathname);
 161 }
 162
 163 static int dhclient_request(struct connman_dhcp *dhcp)
 164 {
 165         struct dhclient_data *dhclient;
 166
 167         DBG("dhcp %p", dhcp);
 168
 169         if (access(DHCLIENT, X_OK) < 0)
 170                 return -EIO;
 171
 172         dhclient = g_try_new0(struct dhclient_data, 1);
 173         if (dhclient == NULL)
 174                 return -ENOMEM;
 175
 176         dhclient->task = connman_task_create(DHCLIENT);
 177         if (dhclient->task == NULL) {
 178                 g_free(dhclient);
 179                 return -ENOMEM;
 180         }
 181
 182         dhclient->dhcp = connman_dhcp_ref(dhcp);
 183         dhclient->ifname = connman_dhcp_get_interface(dhcp);
 184
 185         dhclient_setup(dhclient->task, dhclient->ifname);
 186
 187         connman_dhcp_set_data(dhcp, dhclient);
 188
 189         connman_task_set_notify(dhclient->task, "Notify",
 190                                                 dhclient_notify, dhcp);
 191
 192         connman_task_run(dhclient->task, dhclient_died, dhclient,
 193                                                 NULL, NULL, NULL);
 194
 195         return 0;
 196 }
 197
 198 static int dhclient_release(struct connman_dhcp *dhcp)
 199 {
 200         struct dhclient_data *dhclient = connman_dhcp_get_data(dhcp);
 201
 202         DBG("dhcp %p", dhcp);
 203
 204         if (dhclient->task != NULL)
 205                 connman_task_stop(dhclient->task);
 206
 207         dhclient_unlink(dhclient->ifname);
 208
 209         return 0;
 210 }
 211
 212 static struct connman_dhcp_driver dhclient_driver = {
 213         .name           = "dhclient",
 214         .request        = dhclient_request,
 215         .release        = dhclient_release,
 216 };
 217
 218 static int dhclient_init(void)
 219 {
 220         return connman_dhcp_driver_register(&dhclient_driver);
 221 }
 222
 223 static void dhclient_exit(void)
 224 {
 225         connman_dhcp_driver_unregister(&dhclient_driver);
 226 }
 227
 228 CONNMAN_PLUGIN_DEFINE(dhclient, "ISC DHCP client plugin", VERSION,
 229                 CONNMAN_PLUGIN_PRIORITY_DEFAULT, dhclient_init, dhclient_exit)