5 * Copyright (C) 2007-2010 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
32 #include <sys/ioctl.h>
33 #include <sys/types.h>
34 #include <linux/if_tun.h>
37 #include <dbus/dbus.h>
39 #include <glib/ghash.h>
40 #include <glib/gprintf.h>
42 #include <connman/provider.h>
43 #include <connman/log.h>
44 #include <connman/rtnl.h>
45 #include <connman/task.h>
46 #include <connman/inet.h>
51 struct connman_provider *provider;
56 struct connman_task *task;
59 struct vpn_driver_data {
62 struct vpn_driver *vpn_driver;
63 struct connman_provider_driver provider_driver;
66 GHashTable *driver_hash = NULL;
68 static int kill_tun(char *tun_name)
73 memset(&ifr, 0, sizeof(ifr));
74 ifr.ifr_flags = IFF_TUN | IFF_NO_PI;
75 sprintf(ifr.ifr_name, "%s", tun_name);
77 fd = open("/dev/net/tun", O_RDWR);
80 connman_error("Failed to open /dev/net/tun to device %s: %s",
81 tun_name, strerror(errno));
85 if (ioctl(fd, TUNSETIFF, (void *)&ifr)) {
87 connman_error("Failed to TUNSETIFF for device %s to it: %s",
88 tun_name, strerror(errno));
93 if (ioctl(fd, TUNSETPERSIST, 0)) {
95 connman_error("Failed to set tun device %s nonpersistent: %s",
96 tun_name, strerror(errno));
101 DBG("Killed tun device %s", tun_name);
105 void vpn_died(struct connman_task *task, int exit_code, void *user_data)
107 struct connman_provider *provider = user_data;
108 struct vpn_data *data = connman_provider_get_data(provider);
109 int state = data->state;
110 enum connman_provider_error ret;
112 DBG("provider %p data %p", provider, data);
117 kill_tun(data->if_name);
118 connman_provider_set_data(provider, NULL);
119 connman_rtnl_remove_watch(data->watch);
122 if (state != VPN_STATE_READY && state != VPN_STATE_DISCONNECT) {
124 struct vpn_driver_data *vpn_data;
126 name = connman_provider_get_driver_name(provider);
127 vpn_data = g_hash_table_lookup(driver_hash, name);
128 if (vpn_data != NULL &&
129 vpn_data->vpn_driver->error_code != NULL)
130 ret = vpn_data->vpn_driver->error_code(exit_code);
132 ret = CONNMAN_PROVIDER_ERROR_UNKNOWN;
134 connman_provider_indicate_error(provider, ret);
136 connman_provider_set_state(provider,
137 CONNMAN_PROVIDER_STATE_IDLE);
139 connman_provider_set_index(provider, -1);
140 connman_provider_unref(data->provider);
143 connman_task_destroy(task);
146 static void vpn_newlink(unsigned flags, unsigned change, void *user_data)
148 struct connman_provider *provider = user_data;
149 struct vpn_data *data = connman_provider_get_data(provider);
151 if ((data->flags & IFF_UP) != (flags & IFF_UP)) {
152 if (flags & IFF_UP) {
153 data->state = VPN_STATE_READY;
154 connman_provider_set_state(provider,
155 CONNMAN_PROVIDER_STATE_READY);
161 static void vpn_notify(struct connman_task *task,
162 DBusMessage *msg, void *user_data)
164 struct connman_provider *provider = user_data;
165 struct vpn_data *data;
166 struct vpn_driver_data *vpn_driver_data;
170 data = connman_provider_get_data(provider);
172 name = connman_provider_get_driver_name(provider);
173 vpn_driver_data = g_hash_table_lookup(driver_hash, name);
174 if (vpn_driver_data == NULL)
177 state = vpn_driver_data->vpn_driver->notify(msg, provider);
179 case VPN_STATE_CONNECT:
180 case VPN_STATE_READY:
181 index = connman_provider_get_index(provider);
182 data->watch = connman_rtnl_add_newlink_watch(index,
183 vpn_newlink, provider);
184 connman_inet_ifup(index);
187 case VPN_STATE_UNKNOWN:
189 case VPN_STATE_DISCONNECT:
190 case VPN_STATE_FAILURE:
191 connman_provider_set_state(provider,
192 CONNMAN_PROVIDER_STATE_DISCONNECT);
197 static int vpn_connect(struct connman_provider *provider)
199 struct vpn_data *data = connman_provider_get_data(provider);
200 struct vpn_driver_data *vpn_driver_data;
209 data = g_try_new0(struct vpn_data, 1);
213 data->provider = connman_provider_ref(provider);
217 data->state = VPN_STATE_IDLE;
219 connman_provider_set_data(provider, data);
221 name = connman_provider_get_driver_name(provider);
222 vpn_driver_data = g_hash_table_lookup(driver_hash, name);
224 fd = open("/dev/net/tun", O_RDWR);
227 connman_error("Failed to open /dev/net/tun: %s",
233 memset(&ifr, 0, sizeof(ifr));
234 ifr.ifr_flags = IFF_TUN | IFF_NO_PI;
236 for (i = 0; i < 256; i++) {
237 sprintf(ifr.ifr_name, "vpn%d", i);
239 if (!ioctl(fd, TUNSETIFF, (void *)&ifr))
244 connman_error("Failed to find available tun device");
250 data->if_name = (char *)g_strdup(ifr.ifr_name);
251 if (!data->if_name) {
256 if (ioctl(fd, TUNSETPERSIST, 1)) {
258 connman_error("Failed to set tun persistent: %s",
267 index = connman_inet_ifindex(data->if_name);
269 connman_error("Failed to get tun ifindex");
270 kill_tun(data->if_name);
274 connman_provider_set_index(provider, index);
276 data->task = connman_task_create(vpn_driver_data->program);
278 if (data->task == NULL) {
280 kill_tun(data->if_name);
284 if (connman_task_set_notify(data->task, "notify",
285 vpn_notify, provider)) {
287 kill_tun(data->if_name);
288 connman_task_destroy(data->task);
293 ret = vpn_driver_data->vpn_driver->connect(provider, data->task,
296 kill_tun(data->if_name);
297 connman_task_destroy(data->task);
302 DBG("%s started with dev %s",
303 vpn_driver_data->provider_driver.name, data->if_name);
305 data->state = VPN_STATE_CONNECT;
310 connman_provider_set_index(provider, -1);
311 connman_provider_set_data(provider, NULL);
312 connman_provider_unref(data->provider);
318 static int vpn_probe(struct connman_provider *provider)
323 static int vpn_disconnect(struct connman_provider *provider)
325 struct vpn_data *data = connman_provider_get_data(provider);
326 struct vpn_driver_data *vpn_driver_data;
329 DBG("disconnect provider %p:", provider);
334 name = connman_provider_get_driver_name(provider);
335 vpn_driver_data = g_hash_table_lookup(driver_hash, name);
336 if (vpn_driver_data->vpn_driver->disconnect)
337 vpn_driver_data->vpn_driver->disconnect();
339 if (data->watch != 0)
340 connman_rtnl_remove_watch(data->watch);
343 data->state = VPN_STATE_DISCONNECT;
344 connman_task_stop(data->task);
349 static int vpn_remove(struct connman_provider *provider)
351 struct vpn_data *data;
353 data = connman_provider_get_data(provider);
354 connman_provider_set_data(provider, NULL);
358 if (data->watch != 0)
359 connman_rtnl_remove_watch(data->watch);
361 connman_task_stop(data->task);
363 g_usleep(G_USEC_PER_SEC);
364 kill_tun(data->if_name);
368 int vpn_register(const char *name, struct vpn_driver *vpn_driver,
371 struct vpn_driver_data *data;
373 data = g_try_new0(struct vpn_driver_data, 1);
378 data->program = program;
380 data->vpn_driver = vpn_driver;
382 data->provider_driver.name = name;
383 data->provider_driver.disconnect = vpn_disconnect;
384 data->provider_driver.connect = vpn_connect;
385 data->provider_driver.probe = vpn_probe;
386 data->provider_driver.remove = vpn_remove;
388 if (driver_hash == NULL) {
389 driver_hash = g_hash_table_new_full(g_str_hash,
394 g_hash_table_insert(driver_hash, (char *)name, data);
396 connman_provider_driver_register(&data->provider_driver);
401 void vpn_unregister(const char *name)
403 struct vpn_driver_data *data;
405 data = g_hash_table_lookup(driver_hash, name);
409 connman_provider_driver_unregister(&data->provider_driver);
411 g_hash_table_remove(driver_hash, name);
413 if (g_hash_table_size(driver_hash) == 0)
414 g_hash_table_destroy(driver_hash);