5 * Copyright (C) 2007-2009 Intel Corporation. All rights reserved.
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.
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.
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
28 #include <glib/gstdio.h>
30 #define CONNMAN_API_SUBJECT_TO_CHANGE
31 #include <connman/plugin.h>
32 #include <connman/driver.h>
33 #include <connman/dbus.h>
34 #include <connman/log.h>
38 #define DHCLIENT_INTF "org.isc.dhclient"
39 #define DHCLIENT_PATH "/org/isc/dhclient"
41 static const char *busname;
43 struct dhclient_task {
47 struct connman_element *element;
50 static GSList *task_list = NULL;
52 static struct dhclient_task *find_task_by_pid(GPid pid)
56 for (list = task_list; list; list = list->next) {
57 struct dhclient_task *task = list->data;
66 static struct dhclient_task *find_task_by_index(int index)
70 for (list = task_list; list; list = list->next) {
71 struct dhclient_task *task = list->data;
73 if (task->ifindex == index)
80 static void kill_task(struct dhclient_task *task)
82 DBG("task %p name %s pid %d", task, task->ifname, task->pid);
85 kill(task->pid, SIGTERM);
88 static void unlink_task(struct dhclient_task *task)
92 DBG("task %p name %s pid %d", task, task->ifname, task->pid);
94 pathname = g_strdup_printf("%s/dhclient.%s.pid",
95 STATEDIR, task->ifname);
99 pathname = g_strdup_printf("%s/dhclient.%s.leases",
100 STATEDIR, task->ifname);
105 static void task_died(GPid pid, gint status, gpointer data)
107 struct dhclient_task *task = data;
109 if (WIFEXITED(status))
110 DBG("exit status %d for %s", WEXITSTATUS(status), task->ifname);
112 DBG("signal %d killed %s", WTERMSIG(status), task->ifname);
114 g_spawn_close_pid(pid);
117 task_list = g_slist_remove(task_list, task);
121 g_free(task->ifname);
125 static void task_setup(gpointer data)
127 struct dhclient_task *task = data;
129 DBG("task %p name %s", task, task->ifname);
132 static int dhclient_probe(struct connman_element *element)
134 struct dhclient_task *task;
135 char *argv[16], *envp[1], address[128], pidfile[PATH_MAX];
136 char leases[PATH_MAX], config[PATH_MAX], script[PATH_MAX];
138 DBG("element %p name %s", element, element->name);
140 if (access(DHCLIENT, X_OK) < 0)
143 task = g_try_new0(struct dhclient_task, 1);
147 task->ifindex = element->index;
148 task->ifname = inet_index2name(element->index);
149 task->element = element;
151 if (task->ifname == NULL) {
156 DBG("request %s", task->ifname);
158 snprintf(address, sizeof(address) - 1, "BUSNAME=%s", busname);
159 snprintf(pidfile, sizeof(pidfile) - 1,
160 "%s/dhclient.%s.pid", STATEDIR, task->ifname);
161 snprintf(leases, sizeof(leases) - 1,
162 "%s/dhclient.%s.leases", STATEDIR, task->ifname);
163 snprintf(config, sizeof(config) - 1, "%s/dhclient.conf", SCRIPTDIR);
164 snprintf(script, sizeof(script) - 1, "%s/dhclient-script", SCRIPTDIR);
180 argv[14] = task->ifname;
185 if (g_spawn_async(NULL, argv, envp, G_SPAWN_DO_NOT_REAP_CHILD,
186 task_setup, task, &task->pid, NULL) == FALSE) {
187 connman_error("Failed to spawn dhclient");
191 task_list = g_slist_append(task_list, task);
193 g_child_watch_add(task->pid, task_died, task);
195 DBG("executed %s with pid %d", DHCLIENT, task->pid);
200 static void dhclient_remove(struct connman_element *element)
202 struct dhclient_task *task;
204 DBG("element %p name %s", element, element->name);
206 task = find_task_by_index(element->index);
208 task_list = g_slist_remove(task_list, task);
213 DBG("release %s", task->ifname);
218 static struct connman_driver dhclient_driver = {
220 .type = CONNMAN_ELEMENT_TYPE_DHCP,
221 .probe = dhclient_probe,
222 .remove = dhclient_remove,
225 static DBusHandlerResult dhclient_filter(DBusConnection *conn,
226 DBusMessage *msg, void *data)
228 DBusMessageIter iter, dict;
230 struct dhclient_task *task;
231 const char *text, *key, *value;
233 if (dbus_message_is_method_call(msg, DHCLIENT_INTF, "notify") == FALSE)
234 return DBUS_HANDLER_RESULT_NOT_YET_HANDLED;
236 dbus_message_iter_init(msg, &iter);
238 dbus_message_iter_get_basic(&iter, &pid);
239 dbus_message_iter_next(&iter);
241 dbus_message_iter_get_basic(&iter, &text);
242 dbus_message_iter_next(&iter);
244 DBG("change %d to %s", pid, text);
246 task = find_task_by_pid(pid);
249 return DBUS_HANDLER_RESULT_NOT_YET_HANDLED;
251 dbus_message_iter_recurse(&iter, &dict);
253 while (dbus_message_iter_get_arg_type(&dict) == DBUS_TYPE_DICT_ENTRY) {
254 DBusMessageIter entry;
256 dbus_message_iter_recurse(&dict, &entry);
257 dbus_message_iter_get_basic(&entry, &key);
258 dbus_message_iter_next(&entry);
259 dbus_message_iter_get_basic(&entry, &value);
261 DBG("%s = %s", key, value);
263 if (g_ascii_strcasecmp(key, "new_ip_address") == 0) {
264 g_free(task->element->ipv4.address);
265 task->element->ipv4.address = g_strdup(value);
268 if (g_ascii_strcasecmp(key, "new_subnet_mask") == 0) {
269 g_free(task->element->ipv4.netmask);
270 task->element->ipv4.netmask = g_strdup(value);
273 if (g_ascii_strcasecmp(key, "new_routers") == 0) {
274 g_free(task->element->ipv4.gateway);
275 task->element->ipv4.gateway = g_strdup(value);
278 if (g_ascii_strcasecmp(key, "new_network_number") == 0) {
279 g_free(task->element->ipv4.network);
280 task->element->ipv4.network = g_strdup(value);
283 if (g_ascii_strcasecmp(key, "new_broadcast_address") == 0) {
284 g_free(task->element->ipv4.broadcast);
285 task->element->ipv4.broadcast = g_strdup(value);
288 if (g_ascii_strcasecmp(key, "new_domain_name_servers") == 0) {
289 g_free(task->element->ipv4.nameserver);
290 task->element->ipv4.nameserver = g_strdup(value);
293 dbus_message_iter_next(&dict);
296 if (g_ascii_strcasecmp(text, "PREINIT") == 0) {
297 } else if (g_ascii_strcasecmp(text, "BOUND") == 0 ||
298 g_ascii_strcasecmp(text, "REBOOT") == 0) {
299 struct connman_element *element;
300 element = connman_element_create(NULL);
301 element->type = CONNMAN_ELEMENT_TYPE_IPV4;
302 element->index = task->ifindex;
303 connman_element_update(task->element);
304 if (connman_element_register(element, task->element) < 0)
305 connman_element_unref(element);
306 } else if (g_ascii_strcasecmp(text, "RENEW") == 0 ||
307 g_ascii_strcasecmp(text, "REBIND") == 0) {
308 connman_element_update(task->element);
312 return DBUS_HANDLER_RESULT_HANDLED;
315 static DBusConnection *connection;
317 static const char *dhclient_rule = "path=" DHCLIENT_PATH
318 ",interface=" DHCLIENT_INTF;
320 static int dhclient_init(void)
324 connection = connman_dbus_get_connection();
326 busname = dbus_bus_get_unique_name(connection);
327 busname = CONNMAN_SERVICE;
329 dbus_connection_add_filter(connection, dhclient_filter, NULL, NULL);
331 dbus_bus_add_match(connection, dhclient_rule, NULL);
333 err = connman_driver_register(&dhclient_driver);
335 dbus_connection_unref(connection);
342 static void dhclient_exit(void)
346 for (list = task_list; list; list = list->next) {
347 struct dhclient_task *task = list->data;
349 DBG("killing process %d", task->pid);
355 g_slist_free(task_list);
357 connman_driver_unregister(&dhclient_driver);
359 dbus_bus_remove_match(connection, dhclient_rule, NULL);
361 dbus_connection_remove_filter(connection, dhclient_filter, NULL);
363 dbus_connection_unref(connection);
366 CONNMAN_PLUGIN_DEFINE(dhclient, "ISC DHCP client plugin", VERSION,
367 dhclient_init, dhclient_exit)