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_died(struct connman_task *task, void *user_data)
 118 {
 119         struct dhclient_data *dhclient = user_data;
 120
 121         connman_dhcp_unref(dhclient->dhcp);
 122
 123         connman_task_destroy(dhclient->task);
 124         dhclient->task = NULL;
 125
 126         g_free(dhclient->ifname);
 127         g_free(dhclient);
 128 }
 129
 130 static void dhclient_setup(struct connman_task *task, const char *ifname)
 131 {
 132         const char *path, *intf = "org.moblin.connman.Task";
 133         const char *hostname;
 134
 135         path = connman_task_get_path(task);
 136
 137         connman_task_add_argument(task, "-d", NULL);
 138         connman_task_add_argument(task, "-q", NULL);
 139         connman_task_add_argument(task, "-e", "BUSNAME=org.moblin.connman");
 140         connman_task_add_argument(task, "-e", "BUSINTF=%s", intf);
 141         connman_task_add_argument(task, "-e", "BUSPATH=%s", path);
 142         connman_task_add_argument(task, "-pf", "%s/dhclient.%s.pid",
 143                                                         STATEDIR, ifname);
 144         connman_task_add_argument(task, "-lf", "%s/dhclient.%s.leases",
 145                                                         STATEDIR, ifname);
 146         connman_task_add_argument(task, "-cf", "%s/dhclient.conf", SCRIPTDIR);
 147         connman_task_add_argument(task, "-sf", "%s/dhclient-script", SCRIPTDIR);
 148
 149         hostname = connman_utsname_get_hostname();
 150         if (hostname != NULL)
 151                 connman_task_add_argument(task, "-H", hostname);
 152
 153         connman_task_add_argument(task, ifname, NULL);
 154         connman_task_add_argument(task, "-n", NULL);
 155 }
 156
 157 static void dhclient_unlink(const char *ifname)
 158 {
 159         char *pathname;
 160
 161         pathname = g_strdup_printf("%s/dhclient.%s.pid",
 162                                                 STATEDIR, ifname);
 163         unlink(pathname);
 164         g_free(pathname);
 165
 166         pathname = g_strdup_printf("%s/dhclient.%s.leases",
 167                                                 STATEDIR, ifname);
 168         unlink(pathname);
 169         g_free(pathname);
 170 }
 171
 172 static int dhclient_request(struct connman_dhcp *dhcp)
 173 {
 174         struct dhclient_data *dhclient;
 175
 176         DBG("dhcp %p", dhcp);
 177
 178         if (access(DHCLIENT, X_OK) < 0)
 179                 return -EIO;
 180
 181         dhclient = g_try_new0(struct dhclient_data, 1);
 182         if (dhclient == NULL)
 183                 return -ENOMEM;
 184
 185         dhclient->task = connman_task_create(DHCLIENT);
 186         if (dhclient->task == NULL) {
 187                 g_free(dhclient);
 188                 return -ENOMEM;
 189         }
 190
 191         dhclient->dhcp = connman_dhcp_ref(dhcp);
 192         dhclient->ifname = connman_dhcp_get_interface(dhcp);
 193
 194         dhclient_setup(dhclient->task, dhclient->ifname);
 195
 196         connman_dhcp_set_data(dhcp, dhclient);
 197
 198         connman_task_set_notify(dhclient->task, "Notify",
 199                                                 dhclient_notify, dhcp);
 200
 201         connman_task_run(dhclient->task, dhclient_died, dhclient,
 202                                                 NULL, NULL, NULL);
 203
 204         return 0;
 205 }
 206
 207 static int dhclient_release(struct connman_dhcp *dhcp)
 208 {
 209         struct dhclient_data *dhclient = connman_dhcp_get_data(dhcp);
 210
 211         DBG("dhcp %p", dhcp);
 212
 213         if (dhclient->task != NULL)
 214                 connman_task_stop(dhclient->task);
 215
 216         dhclient_unlink(dhclient->ifname);
 217
 218         return 0;
 219 }
 220
 221 static struct connman_dhcp_driver dhclient_driver = {
 222         .name           = "dhclient",
 223         .request        = dhclient_request,
 224         .release        = dhclient_release,
 225 };
 226
 227 static int dhclient_init(void)
 228 {
 229         return connman_dhcp_driver_register(&dhclient_driver);
 230 }
 231
 232 static void dhclient_exit(void)
 233 {
 234         connman_dhcp_driver_unregister(&dhclient_driver);
 235 }
 236
 237 CONNMAN_PLUGIN_DEFINE(dhclient, "ISC DHCP client plugin", VERSION,
 238                 CONNMAN_PLUGIN_PRIORITY_DEFAULT, dhclient_init, dhclient_exit)