plugins/dhclient.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 <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/utsname.h>
  36 #include <connman/dhcp.h>
  37 #include <connman/task.h>
  38 #include <connman/log.h>
  39
  40 static void dhclient_notify(struct connman_task *task,
  41                                         DBusMessage *msg, void *user_data)
  42 {
  43         struct connman_dhcp *dhcp = user_data;
  44         DBusMessageIter iter, dict;
  45         dbus_uint32_t pid;
  46         const char *text, *key, *value;
  47
  48         dbus_message_iter_init(msg, &iter);
  49
  50         dbus_message_iter_get_basic(&iter, &pid);
  51         dbus_message_iter_next(&iter);
  52
  53         dbus_message_iter_get_basic(&iter, &text);
  54         dbus_message_iter_next(&iter);
  55
  56         DBG("change %d to %s", pid, text);
  57
  58         dbus_message_iter_recurse(&iter, &dict);
  59
  60         while (dbus_message_iter_get_arg_type(&dict) == DBUS_TYPE_DICT_ENTRY) {
  61                 DBusMessageIter entry;
  62
  63                 dbus_message_iter_recurse(&dict, &entry);
  64                 dbus_message_iter_get_basic(&entry, &key);
  65                 dbus_message_iter_next(&entry);
  66                 dbus_message_iter_get_basic(&entry, &value);
  67
  68                 DBG("%s = %s", key, value);
  69
  70                 if (g_strcmp0(key, "new_ip_address") == 0) {
  71                         connman_dhcp_set_value(dhcp, "Address", value);
  72                 } else if (g_strcmp0(key, "new_subnet_mask") == 0) {
  73                         connman_dhcp_set_value(dhcp, "Netmask", value);
  74                 } else if (g_strcmp0(key, "new_routers") == 0) {
  75                         connman_dhcp_set_value(dhcp, "Gateway", value);
  76                 } else if (g_strcmp0(key, "new_network_number") == 0) {
  77                         connman_dhcp_set_value(dhcp, "Network", value);
  78                 } else if (g_strcmp0(key, "new_broadcast_address") == 0) {
  79                         connman_dhcp_set_value(dhcp, "Broadcast", value);
  80                 } else if (g_strcmp0(key, "new_domain_name_servers") == 0) {
  81                         connman_dhcp_set_value(dhcp, "Nameserver", value);
  82                 } else if (g_ascii_strcasecmp(key, "new_domain_name") == 0) {
  83                         connman_dhcp_set_value(dhcp, "Domainname", value);
  84                 } else if (g_ascii_strcasecmp(key, "new_domain_search") == 0) {
  85                 } else if (g_ascii_strcasecmp(key, "new_host_name") == 0) {
  86                         connman_dhcp_set_value(dhcp, "Hostname", value);
  87                 } else if (g_ascii_strcasecmp(key, "new_ntp_servers") == 0) {
  88                         connman_dhcp_set_value(dhcp, "Timeserver", value);
  89                 } else if (g_ascii_strcasecmp(key, "new_interface_mtu") == 0) {
  90                         connman_dhcp_set_value(dhcp, "MTU", value);
  91                 } else if (g_ascii_strcasecmp(key, "new_proxy_auto_config") == 0) {
  92                         connman_dhcp_set_value(dhcp, "PAC", value);
  93                 }
  94
  95                 dbus_message_iter_next(&dict);
  96         }
  97
  98         if (g_strcmp0(text, "PREINIT") == 0) {
  99         } else if (g_strcmp0(text, "BOUND") == 0 ||
 100                                 g_strcmp0(text, "REBOOT") == 0) {
 101                 connman_dhcp_bound(dhcp);
 102         } else if (g_strcmp0(text, "RENEW") == 0 ||
 103                                 g_strcmp0(text, "REBIND") == 0) {
 104                 connman_dhcp_renew(dhcp);
 105         } else if (g_strcmp0(text, "FAIL") == 0) {
 106                 connman_dhcp_fail(dhcp);
 107         } else {
 108         }
 109 }
 110
 111 struct dhclient_data {
 112         struct connman_task *task;
 113         struct connman_dhcp *dhcp;
 114         char *ifname;
 115 };
 116
 117 static void dhclient_unlink(const char *ifname)
 118 {
 119         char *pathname;
 120
 121         pathname = g_strdup_printf("%s/dhclient.%s.pid",
 122                                                 STATEDIR, ifname);
 123         unlink(pathname);
 124         g_free(pathname);
 125
 126         pathname = g_strdup_printf("%s/dhclient.%s.leases",
 127                                                 STATEDIR, ifname);
 128         unlink(pathname);
 129         g_free(pathname);
 130 }
 131
 132 static void dhclient_died(struct connman_task *task, void *user_data)
 133 {
 134         struct dhclient_data *dhclient = user_data;
 135
 136         connman_dhcp_set_data(dhclient->dhcp, NULL);
 137
 138         connman_dhcp_unref(dhclient->dhcp);
 139
 140         connman_task_destroy(dhclient->task);
 141         dhclient->task = NULL;
 142
 143         dhclient_unlink(dhclient->ifname);
 144
 145         g_free(dhclient->ifname);
 146         g_free(dhclient);
 147 }
 148
 149 static void dhclient_setup(struct connman_task *task, const char *ifname)
 150 {
 151         const char *path, *intf = "org.moblin.connman.Task";
 152         const char *hostname;
 153
 154         path = connman_task_get_path(task);
 155
 156         connman_task_add_argument(task, "-d", NULL);
 157         connman_task_add_argument(task, "-q", NULL);
 158         connman_task_add_argument(task, "-e", "BUSNAME=org.moblin.connman");
 159         connman_task_add_argument(task, "-e", "BUSINTF=%s", intf);
 160         connman_task_add_argument(task, "-e", "BUSPATH=%s", path);
 161         connman_task_add_argument(task, "-pf", "%s/dhclient.%s.pid",
 162                                                         STATEDIR, ifname);
 163         connman_task_add_argument(task, "-lf", "%s/dhclient.%s.leases",
 164                                                         STATEDIR, ifname);
 165         connman_task_add_argument(task, "-cf", "%s/dhclient.conf", SCRIPTDIR);
 166         connman_task_add_argument(task, "-sf", "%s/dhclient-script", SCRIPTDIR);
 167
 168         hostname = connman_utsname_get_hostname();
 169 #ifdef HAVE_DHCLIENT_HOSTNAME
 170         if (hostname != NULL)
 171                 connman_task_add_argument(task, "-H", hostname);
 172 #endif
 173
 174         connman_task_add_argument(task, ifname, NULL);
 175         connman_task_add_argument(task, "-n", NULL);
 176 }
 177
 178 static int dhclient_request(struct connman_dhcp *dhcp)
 179 {
 180         struct dhclient_data *dhclient;
 181
 182         DBG("dhcp %p", dhcp);
 183
 184         if (access(DHCLIENT, X_OK) < 0)
 185                 return -EIO;
 186
 187         dhclient = g_try_new0(struct dhclient_data, 1);
 188         if (dhclient == NULL)
 189                 return -ENOMEM;
 190
 191         dhclient->task = connman_task_create(DHCLIENT);
 192         if (dhclient->task == NULL) {
 193                 g_free(dhclient);
 194                 return -ENOMEM;
 195         }
 196
 197         dhclient->dhcp = connman_dhcp_ref(dhcp);
 198         dhclient->ifname = connman_dhcp_get_interface(dhcp);
 199
 200         dhclient_setup(dhclient->task, dhclient->ifname);
 201
 202         connman_dhcp_set_data(dhcp, dhclient);
 203
 204         connman_task_set_notify(dhclient->task, "Notify",
 205                                                 dhclient_notify, dhcp);
 206
 207         connman_task_run(dhclient->task, dhclient_died, dhclient,
 208                                                 NULL, NULL, NULL);
 209
 210         return 0;
 211 }
 212
 213 static int dhclient_release(struct connman_dhcp *dhcp)
 214 {
 215         struct dhclient_data *dhclient = connman_dhcp_get_data(dhcp);
 216
 217         DBG("dhcp %p", dhcp);
 218
 219         if (dhclient == NULL)
 220                 return -ESRCH;
 221
 222         connman_task_stop(dhclient->task);
 223
 224         return 0;
 225 }
 226
 227 static struct connman_dhcp_driver dhclient_driver = {
 228         .name           = "dhclient",
 229         .request        = dhclient_request,
 230         .release        = dhclient_release,
 231 };
 232
 233 static int dhclient_init(void)
 234 {
 235         return connman_dhcp_driver_register(&dhclient_driver);
 236 }
 237
 238 static void dhclient_exit(void)
 239 {
 240         connman_dhcp_driver_unregister(&dhclient_driver);
 241 }
 242
 243 CONNMAN_PLUGIN_DEFINE(dhclient, "ISC DHCP client plugin", VERSION,
 244                 CONNMAN_PLUGIN_PRIORITY_DEFAULT, dhclient_init, dhclient_exit)