5 * Copyright (C) 2007-2008 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
27 #include <glib/gstdio.h>
29 #include <connman/plugin.h>
30 #include <connman/driver.h>
31 #include <connman/dbus.h>
32 #include <connman/log.h>
36 #define DHCLIENT_INTF "org.isc.dhclient"
37 #define DHCLIENT_PATH "/org/isc/dhclient"
39 static const char *busname;
41 struct dhclient_task {
45 struct connman_element *element;
48 static GSList *task_list = NULL;
50 static struct dhclient_task *find_task_by_pid(GPid pid)
54 for (list = task_list; list; list = list->next) {
55 struct dhclient_task *task = list->data;
64 static struct dhclient_task *find_task_by_index(int index)
68 for (list = task_list; list; list = list->next) {
69 struct dhclient_task *task = list->data;
71 if (task->ifindex == index)
78 static void kill_task(struct dhclient_task *task)
80 DBG("task %p name %s pid %d", task, task->ifname, task->pid);
83 kill(task->pid, SIGTERM);
86 static void unlink_task(struct dhclient_task *task)
90 DBG("task %p name %s pid %d", task, task->ifname, task->pid);
92 pathname = g_strdup_printf("%s/dhclient.%s.pid",
93 STATEDIR, task->ifname);
97 pathname = g_strdup_printf("%s/dhclient.%s.leases",
98 STATEDIR, task->ifname);
103 static void task_died(GPid pid, gint status, gpointer data)
105 struct dhclient_task *task = data;
107 if (WIFEXITED(status))
108 DBG("exit status %d for %s", WEXITSTATUS(status), task->ifname);
110 DBG("signal %d killed %s", WTERMSIG(status), task->ifname);
112 g_spawn_close_pid(pid);
115 task_list = g_slist_remove(task_list, task);
119 g_free(task->ifname);
123 static void task_setup(gpointer data)
125 struct dhclient_task *task = data;
127 DBG("task %p name %s", task, task->ifname);
130 static int dhclient_probe(struct connman_element *element)
132 struct dhclient_task *task;
133 char *argv[16], *envp[1], address[128], pidfile[PATH_MAX];
134 char leases[PATH_MAX], config[PATH_MAX], script[PATH_MAX];
136 DBG("element %p name %s", element, element->name);
138 task = g_try_new0(struct dhclient_task, 1);
142 task->ifindex = element->index;
143 task->ifname = inet_index2name(element->index);
144 task->element = element;
146 if (task->ifname == NULL) {
151 DBG("request %s", task->ifname);
153 snprintf(address, sizeof(address) - 1, "BUSNAME=%s", busname);
154 snprintf(pidfile, sizeof(pidfile) - 1,
155 "%s/dhclient.%s.pid", STATEDIR, task->ifname);
156 snprintf(leases, sizeof(leases) - 1,
157 "%s/dhclient.%s.leases", STATEDIR, task->ifname);
158 snprintf(config, sizeof(config) - 1, "%s/dhclient.conf", SCRIPTDIR);
159 snprintf(script, sizeof(script) - 1, "%s/dhclient-script", SCRIPTDIR);
175 argv[14] = task->ifname;
180 if (g_spawn_async(NULL, argv, envp, G_SPAWN_DO_NOT_REAP_CHILD,
181 task_setup, task, &task->pid, NULL) == FALSE) {
182 connman_error("Failed to spawn dhclient");
186 task_list = g_slist_append(task_list, task);
188 g_child_watch_add(task->pid, task_died, task);
190 DBG("executed %s with pid %d", DHCLIENT, task->pid);
195 static void dhclient_remove(struct connman_element *element)
197 struct dhclient_task *task;
199 DBG("element %p name %s", element, element->name);
201 task = find_task_by_index(element->index);
203 task_list = g_slist_remove(task_list, task);
208 DBG("release %s", task->ifname);
213 static struct connman_driver dhclient_driver = {
215 .type = CONNMAN_ELEMENT_TYPE_DHCP,
216 .probe = dhclient_probe,
217 .remove = dhclient_remove,
220 static DBusHandlerResult dhclient_filter(DBusConnection *conn,
221 DBusMessage *msg, void *data)
223 DBusMessageIter iter, dict;
225 struct dhclient_task *task;
226 const char *text, *key, *value;
228 if (dbus_message_is_method_call(msg, DHCLIENT_INTF, "notify") == FALSE)
229 return DBUS_HANDLER_RESULT_NOT_YET_HANDLED;
231 dbus_message_iter_init(msg, &iter);
233 dbus_message_iter_get_basic(&iter, &pid);
234 dbus_message_iter_next(&iter);
236 dbus_message_iter_get_basic(&iter, &text);
237 dbus_message_iter_next(&iter);
239 DBG("change %d to %s", pid, text);
241 task = find_task_by_pid(pid);
244 return DBUS_HANDLER_RESULT_NOT_YET_HANDLED;
246 dbus_message_iter_recurse(&iter, &dict);
248 while (dbus_message_iter_get_arg_type(&dict) == DBUS_TYPE_DICT_ENTRY) {
249 DBusMessageIter entry;
251 dbus_message_iter_recurse(&dict, &entry);
252 dbus_message_iter_get_basic(&entry, &key);
253 dbus_message_iter_next(&entry);
254 dbus_message_iter_get_basic(&entry, &value);
256 DBG("%s = %s", key, value);
258 if (g_ascii_strcasecmp(key, "new_ip_address") == 0) {
259 g_free(task->element->ipv4.address);
260 task->element->ipv4.address = g_strdup(value);
263 if (g_ascii_strcasecmp(key, "new_subnet_mask") == 0) {
264 g_free(task->element->ipv4.netmask);
265 task->element->ipv4.netmask = g_strdup(value);
268 if (g_ascii_strcasecmp(key, "new_routers") == 0) {
269 g_free(task->element->ipv4.gateway);
270 task->element->ipv4.gateway = g_strdup(value);
273 if (g_ascii_strcasecmp(key, "new_network_number") == 0) {
274 g_free(task->element->ipv4.network);
275 task->element->ipv4.network = g_strdup(value);
278 if (g_ascii_strcasecmp(key, "new_broadcast_address") == 0) {
279 g_free(task->element->ipv4.broadcast);
280 task->element->ipv4.broadcast = g_strdup(value);
283 if (g_ascii_strcasecmp(key, "new_domain_name_servers") == 0) {
284 g_free(task->element->ipv4.nameserver);
285 task->element->ipv4.nameserver = g_strdup(value);
288 dbus_message_iter_next(&dict);
291 if (g_ascii_strcasecmp(text, "PREINIT") == 0) {
292 } else if (g_ascii_strcasecmp(text, "BOUND") == 0 ||
293 g_ascii_strcasecmp(text, "REBOOT") == 0) {
294 struct connman_element *element;
295 element = connman_element_create(NULL);
296 element->type = CONNMAN_ELEMENT_TYPE_IPV4;
297 element->index = task->ifindex;
298 connman_element_update(task->element);
299 connman_element_register(element, task->element);
300 } else if (g_ascii_strcasecmp(text, "RENEW") == 0 ||
301 g_ascii_strcasecmp(text, "REBIND") == 0) {
302 connman_element_update(task->element);
306 return DBUS_HANDLER_RESULT_HANDLED;
309 static DBusConnection *connection;
311 static int dhclient_init(void)
316 connection = dbus_bus_get(DBUS_BUS_SYSTEM, NULL);
318 busname = dbus_bus_get_unique_name(connection);
319 busname = CONNMAN_SERVICE;
321 dbus_connection_add_filter(connection, dhclient_filter, NULL, NULL);
323 filter = g_strdup_printf("interface=%s,path=%s",
324 DHCLIENT_INTF, DHCLIENT_PATH);
326 dbus_bus_add_match(connection, filter, NULL);
330 err = connman_driver_register(&dhclient_driver);
332 dbus_connection_unref(connection);
339 static void dhclient_exit(void)
343 for (list = task_list; list; list = list->next) {
344 struct dhclient_task *task = list->data;
346 DBG("killing process %d", task->pid);
352 g_slist_free(task_list);
354 connman_driver_unregister(&dhclient_driver);
356 dbus_connection_unref(connection);
359 CONNMAN_PLUGIN_DEFINE("dhclient", "ISC DHCP client plugin", VERSION,
360 dhclient_init, dhclient_exit)