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/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                 } else if (g_ascii_strcasecmp(key, "new_proxy_auto_config") == 0) {
  91                         connman_dhcp_set_value(dhcp, "PAC", value);
  92                 }
  93
  94                 dbus_message_iter_next(&dict);
  95         }
  96
  97         if (g_strcmp0(text, "PREINIT") == 0) {
  98         } else if (g_strcmp0(text, "BOUND") == 0 ||
  99                                 g_strcmp0(text, "REBOOT") == 0) {
 100                 connman_dhcp_bound(dhcp);
 101         } else if (g_strcmp0(text, "RENEW") == 0 ||
 102                                 g_strcmp0(text, "REBIND") == 0) {
 103                 connman_dhcp_renew(dhcp);
 104         } else if (g_strcmp0(text, "FAIL") == 0) {
 105                 connman_dhcp_fail(dhcp);
 106         } else {
 107         }
 108 }
 109
 110 struct dhclient_data {
 111         struct connman_task *task;
 112         struct connman_dhcp *dhcp;
 113         char *ifname;
 114 };
 115
 116 static void dhclient_died(struct connman_task *task, void *user_data)
 117 {
 118         struct dhclient_data *dhclient = user_data;
 119
 120         connman_dhcp_unref(dhclient->dhcp);
 121
 122         connman_task_destroy(dhclient->task);
 123         dhclient->task = NULL;
 124
 125         g_free(dhclient->ifname);
 126         g_free(dhclient);
 127 }
 128
 129 static void dhclient_setup(struct connman_task *task, const char *ifname)
 130 {
 131         const char *path, *intf = "org.moblin.connman.Task";
 132
 133         path = connman_task_get_path(task);
 134
 135         connman_task_add_argument(task, "-d", NULL);
 136         connman_task_add_argument(task, "-q", NULL);
 137         connman_task_add_argument(task, "-e", "BUSNAME=org.moblin.connman");
 138         connman_task_add_argument(task, "-e", "BUSINTF=%s", intf);
 139         connman_task_add_argument(task, "-e", "BUSPATH=%s", path);
 140         connman_task_add_argument(task, "-pf", "%s/dhclient.%s.pid",
 141                                                         STATEDIR, ifname);
 142         connman_task_add_argument(task, "-lf", "%s/dhclient.%s.leases",
 143                                                         STATEDIR, ifname);
 144         connman_task_add_argument(task, "-cf", "%s/dhclient.conf", SCRIPTDIR);
 145         connman_task_add_argument(task, "-sf", "%s/dhclient-script", SCRIPTDIR);
 146         connman_task_add_argument(task, ifname, NULL);
 147         connman_task_add_argument(task, "-n", NULL);
 148 }
 149
 150 static void dhclient_unlink(const char *ifname)
 151 {
 152         char *pathname;
 153
 154         pathname = g_strdup_printf("%s/dhclient.%s.pid",
 155                                                 STATEDIR, ifname);
 156         unlink(pathname);
 157         g_free(pathname);
 158
 159         pathname = g_strdup_printf("%s/dhclient.%s.leases",
 160                                                 STATEDIR, ifname);
 161         unlink(pathname);
 162         g_free(pathname);
 163 }
 164
 165 static int dhclient_request(struct connman_dhcp *dhcp)
 166 {
 167         struct dhclient_data *dhclient;
 168
 169         DBG("dhcp %p", dhcp);
 170
 171         if (access(DHCLIENT, X_OK) < 0)
 172                 return -EIO;
 173
 174         dhclient = g_try_new0(struct dhclient_data, 1);
 175         if (dhclient == NULL)
 176                 return -ENOMEM;
 177
 178         dhclient->task = connman_task_create(DHCLIENT);
 179         if (dhclient->task == NULL) {
 180                 g_free(dhclient);
 181                 return -ENOMEM;
 182         }
 183
 184         dhclient->dhcp = connman_dhcp_ref(dhcp);
 185         dhclient->ifname = connman_dhcp_get_interface(dhcp);
 186
 187         dhclient_setup(dhclient->task, dhclient->ifname);
 188
 189         connman_dhcp_set_data(dhcp, dhclient);
 190
 191         connman_task_set_notify(dhclient->task, "Notify",
 192                                                 dhclient_notify, dhcp);
 193
 194         connman_task_run(dhclient->task, dhclient_died, dhclient,
 195                                                 NULL, NULL, NULL);
 196
 197         return 0;
 198 }
 199
 200 static int dhclient_release(struct connman_dhcp *dhcp)
 201 {
 202         struct dhclient_data *dhclient = connman_dhcp_get_data(dhcp);
 203
 204         DBG("dhcp %p", dhcp);
 205
 206         if (dhclient->task != NULL)
 207                 connman_task_stop(dhclient->task);
 208
 209         dhclient_unlink(dhclient->ifname);
 210
 211         return 0;
 212 }
 213
 214 static struct connman_dhcp_driver dhclient_driver = {
 215         .name           = "dhclient",
 216         .request        = dhclient_request,
 217         .release        = dhclient_release,
 218 };
 219
 220 static int dhclient_init(void)
 221 {
 222         return connman_dhcp_driver_register(&dhclient_driver);
 223 }
 224
 225 static void dhclient_exit(void)
 226 {
 227         connman_dhcp_driver_unregister(&dhclient_driver);
 228 }
 229
 230 CONNMAN_PLUGIN_DEFINE(dhclient, "ISC DHCP client plugin", VERSION,
 231                 CONNMAN_PLUGIN_PRIORITY_DEFAULT, dhclient_init, dhclient_exit)