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
33 #include <sys/ioctl.h>
34 #include <sys/types.h>
35 #include <linux/if_tun.h>
38 #include <dbus/dbus.h>
40 #include <glib/ghash.h>
41 #include <glib/gprintf.h>
43 #include <connman/provider.h>
44 #include <connman/log.h>
45 #include <connman/rtnl.h>
46 #include <connman/task.h>
47 #include <connman/inet.h>
52 struct connman_provider *provider;
57 struct connman_task *task;
60 struct vpn_driver_data {
63 struct vpn_driver *vpn_driver;
64 struct connman_provider_driver provider_driver;
67 GHashTable *driver_hash = NULL;
69 static int stop_vpn(struct connman_provider *provider)
71 struct vpn_data *data = connman_provider_get_data(provider);
72 struct vpn_driver_data *vpn_driver_data;
80 name = connman_provider_get_driver_name(provider);
81 vpn_driver_data = g_hash_table_lookup(driver_hash, name);
83 if (vpn_driver_data != NULL && vpn_driver_data->vpn_driver != NULL &&
84 vpn_driver_data->vpn_driver->flags == VPN_FLAG_NO_TUN)
87 memset(&ifr, 0, sizeof(ifr));
88 ifr.ifr_flags = IFF_TUN | IFF_NO_PI;
89 sprintf(ifr.ifr_name, "%s", data->if_name);
91 fd = open("/dev/net/tun", O_RDWR | O_CLOEXEC);
94 connman_error("Failed to open /dev/net/tun to device %s: %s",
95 data->if_name, strerror(errno));
99 if (ioctl(fd, TUNSETIFF, (void *)&ifr)) {
101 connman_error("Failed to TUNSETIFF for device %s to it: %s",
102 data->if_name, strerror(errno));
107 if (ioctl(fd, TUNSETPERSIST, 0)) {
109 connman_error("Failed to set tun device %s nonpersistent: %s",
110 data->if_name, strerror(errno));
115 DBG("Killed tun device %s", data->if_name);
119 void vpn_died(struct connman_task *task, int exit_code, void *user_data)
121 struct connman_provider *provider = user_data;
122 struct vpn_data *data = connman_provider_get_data(provider);
123 int state = VPN_STATE_FAILURE;
124 enum connman_provider_error ret;
126 DBG("provider %p data %p", provider, data);
134 connman_provider_set_data(provider, NULL);
135 connman_rtnl_remove_watch(data->watch);
138 if (state != VPN_STATE_READY && state != VPN_STATE_DISCONNECT) {
140 struct vpn_driver_data *vpn_data;
142 name = connman_provider_get_driver_name(provider);
143 vpn_data = g_hash_table_lookup(driver_hash, name);
144 if (vpn_data != NULL &&
145 vpn_data->vpn_driver->error_code != NULL)
146 ret = vpn_data->vpn_driver->error_code(exit_code);
148 ret = CONNMAN_PROVIDER_ERROR_UNKNOWN;
150 connman_provider_indicate_error(provider, ret);
152 connman_provider_set_state(provider,
153 CONNMAN_PROVIDER_STATE_IDLE);
155 connman_provider_set_index(provider, -1);
156 connman_provider_unref(data->provider);
158 g_free(data->if_name);
161 connman_task_destroy(task);
164 int vpn_set_ifname(struct connman_provider *provider, const char *ifname)
166 struct vpn_data *data = connman_provider_get_data(provider);
169 if (ifname == NULL || data == NULL)
172 index = connman_inet_ifindex(ifname);
176 if (data->if_name != NULL)
177 g_free(data->if_name);
179 data->if_name = (char *)g_strdup(ifname);
180 connman_provider_set_index(provider, index);
185 static void vpn_newlink(unsigned flags, unsigned change, void *user_data)
187 struct connman_provider *provider = user_data;
188 struct vpn_data *data = connman_provider_get_data(provider);
190 if ((data->flags & IFF_UP) != (flags & IFF_UP)) {
191 if (flags & IFF_UP) {
192 data->state = VPN_STATE_READY;
193 connman_provider_set_state(provider,
194 CONNMAN_PROVIDER_STATE_READY);
200 static void vpn_notify(struct connman_task *task,
201 DBusMessage *msg, void *user_data)
203 struct connman_provider *provider = user_data;
204 struct vpn_data *data;
205 struct vpn_driver_data *vpn_driver_data;
209 data = connman_provider_get_data(provider);
211 name = connman_provider_get_driver_name(provider);
212 vpn_driver_data = g_hash_table_lookup(driver_hash, name);
213 if (vpn_driver_data == NULL)
216 state = vpn_driver_data->vpn_driver->notify(msg, provider);
218 case VPN_STATE_CONNECT:
219 case VPN_STATE_READY:
220 index = connman_provider_get_index(provider);
221 data->watch = connman_rtnl_add_newlink_watch(index,
222 vpn_newlink, provider);
223 connman_inet_ifup(index);
226 case VPN_STATE_UNKNOWN:
228 case VPN_STATE_DISCONNECT:
229 case VPN_STATE_FAILURE:
230 connman_provider_set_state(provider,
231 CONNMAN_PROVIDER_STATE_DISCONNECT);
234 case VPN_STATE_AUTH_FAILURE:
235 connman_provider_indicate_error(provider,
236 CONNMAN_PROVIDER_ERROR_AUTH_FAILED);
241 static int vpn_create_tun(struct connman_provider *provider)
243 struct vpn_data *data = connman_provider_get_data(provider);
251 fd = open("/dev/net/tun", O_RDWR | O_CLOEXEC);
254 connman_error("Failed to open /dev/net/tun: %s",
260 memset(&ifr, 0, sizeof(ifr));
261 ifr.ifr_flags = IFF_TUN | IFF_NO_PI;
263 for (i = 0; i < 256; i++) {
264 sprintf(ifr.ifr_name, "vpn%d", i);
266 if (!ioctl(fd, TUNSETIFF, (void *)&ifr))
271 connman_error("Failed to find available tun device");
277 data->if_name = (char *)g_strdup(ifr.ifr_name);
278 if (data->if_name == NULL) {
279 connman_error("Failed to allocate memory");
285 if (ioctl(fd, TUNSETPERSIST, 1)) {
287 connman_error("Failed to set tun persistent: %s",
296 index = connman_inet_ifindex(data->if_name);
298 connman_error("Failed to get tun ifindex");
303 connman_provider_set_index(provider, index);
311 static int vpn_connect(struct connman_provider *provider)
313 struct vpn_data *data = connman_provider_get_data(provider);
314 struct vpn_driver_data *vpn_driver_data;
321 data = g_try_new0(struct vpn_data, 1);
325 data->provider = connman_provider_ref(provider);
329 data->state = VPN_STATE_IDLE;
331 connman_provider_set_data(provider, data);
333 name = connman_provider_get_driver_name(provider);
334 vpn_driver_data = g_hash_table_lookup(driver_hash, name);
336 if (vpn_driver_data != NULL && vpn_driver_data->vpn_driver != NULL &&
337 vpn_driver_data->vpn_driver->flags != VPN_FLAG_NO_TUN) {
339 ret = vpn_create_tun(provider);
344 data->task = connman_task_create(vpn_driver_data->program);
346 if (data->task == NULL) {
352 if (connman_task_set_notify(data->task, "notify",
353 vpn_notify, provider)) {
356 connman_task_destroy(data->task);
361 ret = vpn_driver_data->vpn_driver->connect(provider, data->task,
365 connman_task_destroy(data->task);
370 DBG("%s started with dev %s",
371 vpn_driver_data->provider_driver.name, data->if_name);
373 data->state = VPN_STATE_CONNECT;
378 connman_provider_set_index(provider, -1);
379 connman_provider_set_data(provider, NULL);
380 connman_provider_unref(data->provider);
381 g_free(data->if_name);
387 static int vpn_probe(struct connman_provider *provider)
392 static int vpn_disconnect(struct connman_provider *provider)
394 struct vpn_data *data = connman_provider_get_data(provider);
395 struct vpn_driver_data *vpn_driver_data;
398 DBG("disconnect provider %p:", provider);
403 name = connman_provider_get_driver_name(provider);
404 vpn_driver_data = g_hash_table_lookup(driver_hash, name);
405 if (vpn_driver_data->vpn_driver->disconnect)
406 vpn_driver_data->vpn_driver->disconnect();
408 if (data->watch != 0)
409 connman_rtnl_remove_watch(data->watch);
412 data->state = VPN_STATE_DISCONNECT;
413 connman_task_stop(data->task);
418 static int vpn_remove(struct connman_provider *provider)
420 struct vpn_data *data;
422 data = connman_provider_get_data(provider);
426 if (data->watch != 0)
427 connman_rtnl_remove_watch(data->watch);
429 connman_task_stop(data->task);
431 g_usleep(G_USEC_PER_SEC);
436 static int vpn_save (struct connman_provider *provider, GKeyFile *keyfile)
438 struct vpn_driver_data *vpn_driver_data;
441 name = connman_provider_get_driver_name(provider);
442 vpn_driver_data = g_hash_table_lookup(driver_hash, name);
443 if (vpn_driver_data != NULL &&
444 vpn_driver_data->vpn_driver->save != NULL)
445 return vpn_driver_data->vpn_driver->save(provider, keyfile);
450 int vpn_register(const char *name, struct vpn_driver *vpn_driver,
453 struct vpn_driver_data *data;
455 data = g_try_new0(struct vpn_driver_data, 1);
460 data->program = program;
462 data->vpn_driver = vpn_driver;
464 data->provider_driver.name = name;
465 data->provider_driver.disconnect = vpn_disconnect;
466 data->provider_driver.connect = vpn_connect;
467 data->provider_driver.probe = vpn_probe;
468 data->provider_driver.remove = vpn_remove;
469 data->provider_driver.save = vpn_save;
471 if (driver_hash == NULL) {
472 driver_hash = g_hash_table_new_full(g_str_hash,
477 g_hash_table_insert(driver_hash, (char *)name, data);
479 connman_provider_driver_register(&data->provider_driver);
484 void vpn_unregister(const char *name)
486 struct vpn_driver_data *data;
488 data = g_hash_table_lookup(driver_hash, name);
492 connman_provider_driver_unregister(&data->provider_driver);
494 g_hash_table_remove(driver_hash, name);
496 if (g_hash_table_size(driver_hash) == 0)
497 g_hash_table_destroy(driver_hash);