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/inet.h>
34 #include <connman/dbus.h>
35 #include <connman/log.h>
37 #define DHCLIENT_INTF "org.isc.dhclient"
38 #define DHCLIENT_PATH "/org/isc/dhclient"
40 static const char *busname;
42 struct dhclient_task {
46 struct connman_element *element;
49 static GSList *task_list = NULL;
51 static struct dhclient_task *find_task_by_pid(GPid pid)
55 for (list = task_list; list; list = list->next) {
56 struct dhclient_task *task = list->data;
65 static struct dhclient_task *find_task_by_index(int index)
69 for (list = task_list; list; list = list->next) {
70 struct dhclient_task *task = list->data;
72 if (task->ifindex == index)
79 static void kill_task(struct dhclient_task *task)
81 DBG("task %p name %s pid %d", task, task->ifname, task->pid);
84 kill(task->pid, SIGTERM);
87 static void unlink_task(struct dhclient_task *task)
91 DBG("task %p name %s pid %d", task, task->ifname, task->pid);
93 pathname = g_strdup_printf("%s/dhclient.%s.pid",
94 STATEDIR, task->ifname);
98 pathname = g_strdup_printf("%s/dhclient.%s.leases",
99 STATEDIR, task->ifname);
104 static void task_died(GPid pid, gint status, gpointer data)
106 struct dhclient_task *task = data;
108 if (WIFEXITED(status))
109 DBG("exit status %d for %s", WEXITSTATUS(status), task->ifname);
111 DBG("signal %d killed %s", WTERMSIG(status), task->ifname);
113 g_spawn_close_pid(pid);
116 task_list = g_slist_remove(task_list, task);
120 g_free(task->ifname);
124 static void task_setup(gpointer data)
126 struct dhclient_task *task = data;
128 DBG("task %p name %s", task, task->ifname);
131 static int dhclient_probe(struct connman_element *element)
133 struct dhclient_task *task;
134 char *argv[16], *envp[1], address[128], pidfile[PATH_MAX];
135 char leases[PATH_MAX], config[PATH_MAX], script[PATH_MAX];
137 DBG("element %p name %s", element, element->name);
139 if (access(DHCLIENT, X_OK) < 0)
142 task = g_try_new0(struct dhclient_task, 1);
146 task->ifindex = element->index;
147 task->ifname = connman_inet_ifname(element->index);
148 task->element = element;
150 if (task->ifname == NULL) {
155 DBG("request %s", task->ifname);
157 snprintf(address, sizeof(address) - 1, "BUSNAME=%s", busname);
158 snprintf(pidfile, sizeof(pidfile) - 1,
159 "%s/dhclient.%s.pid", STATEDIR, task->ifname);
160 snprintf(leases, sizeof(leases) - 1,
161 "%s/dhclient.%s.leases", STATEDIR, task->ifname);
162 snprintf(config, sizeof(config) - 1, "%s/dhclient.conf", SCRIPTDIR);
163 snprintf(script, sizeof(script) - 1, "%s/dhclient-script", SCRIPTDIR);
178 argv[13] = task->ifname;
184 if (g_spawn_async(NULL, argv, envp, G_SPAWN_DO_NOT_REAP_CHILD,
185 task_setup, task, &task->pid, NULL) == FALSE) {
186 connman_error("Failed to spawn dhclient");
190 task_list = g_slist_append(task_list, task);
192 g_child_watch_add(task->pid, task_died, task);
194 DBG("executed %s with pid %d", DHCLIENT, task->pid);
199 static void dhclient_remove(struct connman_element *element)
201 struct dhclient_task *task;
203 DBG("element %p name %s", element, element->name);
205 task = find_task_by_index(element->index);
207 task_list = g_slist_remove(task_list, task);
212 DBG("release %s", task->ifname);
217 static void dhclient_change(struct connman_element *element)
219 DBG("element %p name %s", element, element->name);
221 if (element->state == CONNMAN_ELEMENT_STATE_ERROR)
222 connman_element_set_error(element->parent,
223 CONNMAN_ELEMENT_ERROR_DHCP_FAILED);
226 static struct connman_driver dhclient_driver = {
228 .type = CONNMAN_ELEMENT_TYPE_DHCP,
229 .probe = dhclient_probe,
230 .remove = dhclient_remove,
231 .change = dhclient_change,
234 static DBusHandlerResult dhclient_filter(DBusConnection *conn,
235 DBusMessage *msg, void *data)
237 DBusMessageIter iter, dict;
239 struct dhclient_task *task;
240 const char *text, *key, *value;
242 if (dbus_message_is_method_call(msg, DHCLIENT_INTF, "notify") == FALSE)
243 return DBUS_HANDLER_RESULT_NOT_YET_HANDLED;
245 dbus_message_iter_init(msg, &iter);
247 dbus_message_iter_get_basic(&iter, &pid);
248 dbus_message_iter_next(&iter);
250 dbus_message_iter_get_basic(&iter, &text);
251 dbus_message_iter_next(&iter);
253 DBG("change %d to %s", pid, text);
255 task = find_task_by_pid(pid);
258 return DBUS_HANDLER_RESULT_NOT_YET_HANDLED;
260 dbus_message_iter_recurse(&iter, &dict);
262 while (dbus_message_iter_get_arg_type(&dict) == DBUS_TYPE_DICT_ENTRY) {
263 DBusMessageIter entry;
265 dbus_message_iter_recurse(&dict, &entry);
266 dbus_message_iter_get_basic(&entry, &key);
267 dbus_message_iter_next(&entry);
268 dbus_message_iter_get_basic(&entry, &value);
270 DBG("%s = %s", key, value);
272 if (g_ascii_strcasecmp(key, "new_ip_address") == 0) {
273 g_free(task->element->ipv4.address);
274 task->element->ipv4.address = g_strdup(value);
277 if (g_ascii_strcasecmp(key, "new_subnet_mask") == 0) {
278 g_free(task->element->ipv4.netmask);
279 task->element->ipv4.netmask = g_strdup(value);
282 if (g_ascii_strcasecmp(key, "new_routers") == 0) {
283 g_free(task->element->ipv4.gateway);
284 task->element->ipv4.gateway = g_strdup(value);
287 if (g_ascii_strcasecmp(key, "new_network_number") == 0) {
288 g_free(task->element->ipv4.network);
289 task->element->ipv4.network = g_strdup(value);
292 if (g_ascii_strcasecmp(key, "new_broadcast_address") == 0) {
293 g_free(task->element->ipv4.broadcast);
294 task->element->ipv4.broadcast = g_strdup(value);
297 if (g_ascii_strcasecmp(key, "new_domain_name_servers") == 0) {
298 g_free(task->element->ipv4.nameserver);
299 task->element->ipv4.nameserver = g_strdup(value);
302 if (g_ascii_strcasecmp(key, "new_domain_name") == 0) {
305 if (g_ascii_strcasecmp(key, "new_domain_search") == 0) {
308 if (g_ascii_strcasecmp(key, "new_host_name") == 0) {
311 dbus_message_iter_next(&dict);
314 if (g_ascii_strcasecmp(text, "PREINIT") == 0) {
315 } else if (g_ascii_strcasecmp(text, "BOUND") == 0 ||
316 g_ascii_strcasecmp(text, "REBOOT") == 0) {
317 struct connman_element *element;
318 element = connman_element_create(NULL);
319 element->type = CONNMAN_ELEMENT_TYPE_IPV4;
320 element->index = task->ifindex;
321 connman_element_update(task->element);
322 if (connman_element_register(element, task->element) < 0)
323 connman_element_unref(element);
324 } else if (g_ascii_strcasecmp(text, "RENEW") == 0 ||
325 g_ascii_strcasecmp(text, "REBIND") == 0) {
326 connman_element_update(task->element);
327 } else if (g_ascii_strcasecmp(text, "FAIL") == 0) {
328 connman_element_set_error(task->element,
329 CONNMAN_ELEMENT_ERROR_FAILED);
333 return DBUS_HANDLER_RESULT_HANDLED;
336 static DBusConnection *connection;
338 static const char *dhclient_rule = "path=" DHCLIENT_PATH
339 ",interface=" DHCLIENT_INTF;
341 static int dhclient_init(void)
345 connection = connman_dbus_get_connection();
347 busname = dbus_bus_get_unique_name(connection);
348 busname = CONNMAN_SERVICE;
350 dbus_connection_add_filter(connection, dhclient_filter, NULL, NULL);
352 dbus_bus_add_match(connection, dhclient_rule, NULL);
354 err = connman_driver_register(&dhclient_driver);
356 dbus_connection_unref(connection);
363 static void dhclient_exit(void)
367 for (list = task_list; list; list = list->next) {
368 struct dhclient_task *task = list->data;
370 DBG("killing process %d", task->pid);
376 g_slist_free(task_list);
378 connman_driver_unregister(&dhclient_driver);
380 dbus_bus_remove_match(connection, dhclient_rule, NULL);
382 dbus_connection_remove_filter(connection, dhclient_filter, NULL);
384 dbus_connection_unref(connection);
387 CONNMAN_PLUGIN_DEFINE(dhclient, "ISC DHCP client plugin", VERSION,
388 CONNMAN_PLUGIN_PRIORITY_DEFAULT, dhclient_init, dhclient_exit)