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);
84 vpn_driver_data = g_hash_table_lookup(driver_hash, name);
86 if (vpn_driver_data != NULL && vpn_driver_data->vpn_driver != NULL &&
87 vpn_driver_data->vpn_driver->flags == VPN_FLAG_NO_TUN)
90 memset(&ifr, 0, sizeof(ifr));
91 ifr.ifr_flags = IFF_TUN | IFF_NO_PI;
92 sprintf(ifr.ifr_name, "%s", data->if_name);
94 fd = open("/dev/net/tun", O_RDWR | O_CLOEXEC);
97 connman_error("Failed to open /dev/net/tun to device %s: %s",
98 data->if_name, strerror(errno));
102 if (ioctl(fd, TUNSETIFF, (void *)&ifr)) {
104 connman_error("Failed to TUNSETIFF for device %s to it: %s",
105 data->if_name, strerror(errno));
110 if (ioctl(fd, TUNSETPERSIST, 0)) {
112 connman_error("Failed to set tun device %s nonpersistent: %s",
113 data->if_name, strerror(errno));
118 DBG("Killed tun device %s", data->if_name);
122 void vpn_died(struct connman_task *task, int exit_code, void *user_data)
124 struct connman_provider *provider = user_data;
125 struct vpn_data *data = connman_provider_get_data(provider);
126 int state = VPN_STATE_FAILURE;
127 enum connman_provider_error ret;
129 DBG("provider %p data %p", provider, data);
137 connman_provider_set_data(provider, NULL);
138 connman_provider_unref(provider);
139 connman_rtnl_remove_watch(data->watch);
142 if (state != VPN_STATE_READY && state != VPN_STATE_DISCONNECT) {
144 struct vpn_driver_data *vpn_data = NULL;
146 name = connman_provider_get_driver_name(provider);
148 vpn_data = g_hash_table_lookup(driver_hash, name);
150 if (vpn_data != NULL &&
151 vpn_data->vpn_driver->error_code != NULL)
152 ret = vpn_data->vpn_driver->error_code(exit_code);
154 ret = CONNMAN_PROVIDER_ERROR_UNKNOWN;
156 connman_provider_indicate_error(provider, ret);
158 connman_provider_set_state(provider,
159 CONNMAN_PROVIDER_STATE_IDLE);
161 connman_provider_set_index(provider, -1);
162 connman_provider_unref(data->provider);
164 g_free(data->if_name);
167 connman_task_destroy(task);
170 int vpn_set_ifname(struct connman_provider *provider, const char *ifname)
172 struct vpn_data *data = connman_provider_get_data(provider);
175 if (ifname == NULL || data == NULL)
178 index = connman_inet_ifindex(ifname);
182 if (data->if_name != NULL)
183 g_free(data->if_name);
185 data->if_name = (char *)g_strdup(ifname);
186 connman_provider_set_index(provider, index);
191 static void vpn_newlink(unsigned flags, unsigned change, void *user_data)
193 struct connman_provider *provider = user_data;
194 struct vpn_data *data = connman_provider_get_data(provider);
196 if ((data->flags & IFF_UP) != (flags & IFF_UP)) {
197 if (flags & IFF_UP) {
198 data->state = VPN_STATE_READY;
199 connman_provider_set_state(provider,
200 CONNMAN_PROVIDER_STATE_READY);
206 static DBusMessage *vpn_notify(struct connman_task *task,
207 DBusMessage *msg, void *user_data)
209 struct connman_provider *provider = user_data;
210 struct vpn_data *data;
211 struct vpn_driver_data *vpn_driver_data;
215 data = connman_provider_get_data(provider);
217 name = connman_provider_get_driver_name(provider);
221 vpn_driver_data = g_hash_table_lookup(driver_hash, name);
222 if (vpn_driver_data == NULL)
225 state = vpn_driver_data->vpn_driver->notify(msg, provider);
227 case VPN_STATE_CONNECT:
228 case VPN_STATE_READY:
229 index = connman_provider_get_index(provider);
230 connman_provider_ref(provider);
231 data->watch = connman_rtnl_add_newlink_watch(index,
232 vpn_newlink, provider);
233 connman_inet_ifup(index);
236 case VPN_STATE_UNKNOWN:
238 case VPN_STATE_DISCONNECT:
239 case VPN_STATE_FAILURE:
240 connman_provider_set_state(provider,
241 CONNMAN_PROVIDER_STATE_DISCONNECT);
244 case VPN_STATE_AUTH_FAILURE:
245 connman_provider_indicate_error(provider,
246 CONNMAN_PROVIDER_ERROR_AUTH_FAILED);
253 static int vpn_create_tun(struct connman_provider *provider)
255 struct vpn_data *data = connman_provider_get_data(provider);
263 fd = open("/dev/net/tun", O_RDWR | O_CLOEXEC);
266 connman_error("Failed to open /dev/net/tun: %s",
272 memset(&ifr, 0, sizeof(ifr));
273 ifr.ifr_flags = IFF_TUN | IFF_NO_PI;
275 for (i = 0; i < 256; i++) {
276 sprintf(ifr.ifr_name, "vpn%d", i);
278 if (!ioctl(fd, TUNSETIFF, (void *)&ifr))
283 connman_error("Failed to find available tun device");
289 data->if_name = (char *)g_strdup(ifr.ifr_name);
290 if (data->if_name == NULL) {
291 connman_error("Failed to allocate memory");
297 if (ioctl(fd, TUNSETPERSIST, 1)) {
299 connman_error("Failed to set tun persistent: %s",
308 index = connman_inet_ifindex(data->if_name);
310 connman_error("Failed to get tun ifindex");
315 connman_provider_set_index(provider, index);
323 static int vpn_connect(struct connman_provider *provider)
325 struct vpn_data *data = connman_provider_get_data(provider);
326 struct vpn_driver_data *vpn_driver_data;
333 data = g_try_new0(struct vpn_data, 1);
337 data->provider = connman_provider_ref(provider);
341 data->state = VPN_STATE_IDLE;
343 connman_provider_set_data(provider, data);
345 name = connman_provider_get_driver_name(provider);
349 vpn_driver_data = g_hash_table_lookup(driver_hash, name);
351 if (vpn_driver_data != NULL && vpn_driver_data->vpn_driver != NULL &&
352 vpn_driver_data->vpn_driver->flags != VPN_FLAG_NO_TUN) {
354 ret = vpn_create_tun(provider);
359 data->task = connman_task_create(vpn_driver_data->program);
361 if (data->task == NULL) {
367 if (connman_task_set_notify(data->task, "notify",
368 vpn_notify, provider)) {
371 connman_task_destroy(data->task);
376 ret = vpn_driver_data->vpn_driver->connect(provider, data->task,
380 connman_task_destroy(data->task);
385 DBG("%s started with dev %s",
386 vpn_driver_data->provider_driver.name, data->if_name);
388 data->state = VPN_STATE_CONNECT;
393 connman_provider_set_index(provider, -1);
394 connman_provider_set_data(provider, NULL);
395 connman_provider_unref(data->provider);
396 g_free(data->if_name);
402 static int vpn_probe(struct connman_provider *provider)
407 static int vpn_disconnect(struct connman_provider *provider)
409 struct vpn_data *data = connman_provider_get_data(provider);
410 struct vpn_driver_data *vpn_driver_data;
413 DBG("disconnect provider %p:", provider);
418 name = connman_provider_get_driver_name(provider);
422 vpn_driver_data = g_hash_table_lookup(driver_hash, name);
423 if (vpn_driver_data->vpn_driver->disconnect)
424 vpn_driver_data->vpn_driver->disconnect();
426 if (data->watch != 0) {
427 connman_provider_unref(provider);
428 connman_rtnl_remove_watch(data->watch);
432 data->state = VPN_STATE_DISCONNECT;
433 connman_task_stop(data->task);
438 static int vpn_remove(struct connman_provider *provider)
440 struct vpn_data *data;
442 data = connman_provider_get_data(provider);
446 if (data->watch != 0) {
447 connman_provider_unref(provider);
448 connman_rtnl_remove_watch(data->watch);
452 connman_task_stop(data->task);
454 g_usleep(G_USEC_PER_SEC);
459 static int vpn_save (struct connman_provider *provider, GKeyFile *keyfile)
461 struct vpn_driver_data *vpn_driver_data;
464 name = connman_provider_get_driver_name(provider);
465 vpn_driver_data = g_hash_table_lookup(driver_hash, name);
466 if (vpn_driver_data != NULL &&
467 vpn_driver_data->vpn_driver->save != NULL)
468 return vpn_driver_data->vpn_driver->save(provider, keyfile);
473 int vpn_register(const char *name, struct vpn_driver *vpn_driver,
476 struct vpn_driver_data *data;
478 data = g_try_new0(struct vpn_driver_data, 1);
483 data->program = program;
485 data->vpn_driver = vpn_driver;
487 data->provider_driver.name = name;
488 data->provider_driver.disconnect = vpn_disconnect;
489 data->provider_driver.connect = vpn_connect;
490 data->provider_driver.probe = vpn_probe;
491 data->provider_driver.remove = vpn_remove;
492 data->provider_driver.save = vpn_save;
494 if (driver_hash == NULL)
495 driver_hash = g_hash_table_new_full(g_str_hash,
499 if (driver_hash == NULL) {
500 connman_error("driver_hash not initialized for %s", name);
505 g_hash_table_insert(driver_hash, (char *)name, data);
507 connman_provider_driver_register(&data->provider_driver);
512 void vpn_unregister(const char *name)
514 struct vpn_driver_data *data;
516 data = g_hash_table_lookup(driver_hash, name);
520 connman_provider_driver_unregister(&data->provider_driver);
522 g_hash_table_remove(driver_hash, name);
524 if (g_hash_table_size(driver_hash) == 0)
525 g_hash_table_destroy(driver_hash);