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_rtnl_remove_watch(data->watch);
141 if (state != VPN_STATE_READY && state != VPN_STATE_DISCONNECT) {
143 struct vpn_driver_data *vpn_data = NULL;
145 name = connman_provider_get_driver_name(provider);
147 vpn_data = g_hash_table_lookup(driver_hash, name);
149 if (vpn_data != NULL &&
150 vpn_data->vpn_driver->error_code != NULL)
151 ret = vpn_data->vpn_driver->error_code(exit_code);
153 ret = CONNMAN_PROVIDER_ERROR_UNKNOWN;
155 connman_provider_indicate_error(provider, ret);
157 connman_provider_set_state(provider,
158 CONNMAN_PROVIDER_STATE_IDLE);
160 connman_provider_set_index(provider, -1);
161 connman_provider_unref(data->provider);
163 g_free(data->if_name);
166 connman_task_destroy(task);
169 int vpn_set_ifname(struct connman_provider *provider, const char *ifname)
171 struct vpn_data *data = connman_provider_get_data(provider);
174 if (ifname == NULL || data == NULL)
177 index = connman_inet_ifindex(ifname);
181 if (data->if_name != NULL)
182 g_free(data->if_name);
184 data->if_name = (char *)g_strdup(ifname);
185 connman_provider_set_index(provider, index);
190 static void vpn_newlink(unsigned flags, unsigned change, void *user_data)
192 struct connman_provider *provider = user_data;
193 struct vpn_data *data = connman_provider_get_data(provider);
195 if ((data->flags & IFF_UP) != (flags & IFF_UP)) {
196 if (flags & IFF_UP) {
197 data->state = VPN_STATE_READY;
198 connman_provider_set_state(provider,
199 CONNMAN_PROVIDER_STATE_READY);
205 static void vpn_notify(struct connman_task *task,
206 DBusMessage *msg, void *user_data)
208 struct connman_provider *provider = user_data;
209 struct vpn_data *data;
210 struct vpn_driver_data *vpn_driver_data;
214 data = connman_provider_get_data(provider);
216 name = connman_provider_get_driver_name(provider);
220 vpn_driver_data = g_hash_table_lookup(driver_hash, name);
221 if (vpn_driver_data == NULL)
224 state = vpn_driver_data->vpn_driver->notify(msg, provider);
226 case VPN_STATE_CONNECT:
227 case VPN_STATE_READY:
228 index = connman_provider_get_index(provider);
229 data->watch = connman_rtnl_add_newlink_watch(index,
230 vpn_newlink, provider);
231 connman_inet_ifup(index);
234 case VPN_STATE_UNKNOWN:
236 case VPN_STATE_DISCONNECT:
237 case VPN_STATE_FAILURE:
238 connman_provider_set_state(provider,
239 CONNMAN_PROVIDER_STATE_DISCONNECT);
242 case VPN_STATE_AUTH_FAILURE:
243 connman_provider_indicate_error(provider,
244 CONNMAN_PROVIDER_ERROR_AUTH_FAILED);
249 static int vpn_create_tun(struct connman_provider *provider)
251 struct vpn_data *data = connman_provider_get_data(provider);
259 fd = open("/dev/net/tun", O_RDWR | O_CLOEXEC);
262 connman_error("Failed to open /dev/net/tun: %s",
268 memset(&ifr, 0, sizeof(ifr));
269 ifr.ifr_flags = IFF_TUN | IFF_NO_PI;
271 for (i = 0; i < 256; i++) {
272 sprintf(ifr.ifr_name, "vpn%d", i);
274 if (!ioctl(fd, TUNSETIFF, (void *)&ifr))
279 connman_error("Failed to find available tun device");
285 data->if_name = (char *)g_strdup(ifr.ifr_name);
286 if (data->if_name == NULL) {
287 connman_error("Failed to allocate memory");
293 if (ioctl(fd, TUNSETPERSIST, 1)) {
295 connman_error("Failed to set tun persistent: %s",
304 index = connman_inet_ifindex(data->if_name);
306 connman_error("Failed to get tun ifindex");
311 connman_provider_set_index(provider, index);
319 static int vpn_connect(struct connman_provider *provider)
321 struct vpn_data *data = connman_provider_get_data(provider);
322 struct vpn_driver_data *vpn_driver_data;
329 data = g_try_new0(struct vpn_data, 1);
333 data->provider = connman_provider_ref(provider);
337 data->state = VPN_STATE_IDLE;
339 connman_provider_set_data(provider, data);
341 name = connman_provider_get_driver_name(provider);
345 vpn_driver_data = g_hash_table_lookup(driver_hash, name);
347 if (vpn_driver_data != NULL && vpn_driver_data->vpn_driver != NULL &&
348 vpn_driver_data->vpn_driver->flags != VPN_FLAG_NO_TUN) {
350 ret = vpn_create_tun(provider);
355 data->task = connman_task_create(vpn_driver_data->program);
357 if (data->task == NULL) {
363 if (connman_task_set_notify(data->task, "notify",
364 vpn_notify, provider)) {
367 connman_task_destroy(data->task);
372 ret = vpn_driver_data->vpn_driver->connect(provider, data->task,
376 connman_task_destroy(data->task);
381 DBG("%s started with dev %s",
382 vpn_driver_data->provider_driver.name, data->if_name);
384 data->state = VPN_STATE_CONNECT;
389 connman_provider_set_index(provider, -1);
390 connman_provider_set_data(provider, NULL);
391 connman_provider_unref(data->provider);
392 g_free(data->if_name);
398 static int vpn_probe(struct connman_provider *provider)
403 static int vpn_disconnect(struct connman_provider *provider)
405 struct vpn_data *data = connman_provider_get_data(provider);
406 struct vpn_driver_data *vpn_driver_data;
409 DBG("disconnect provider %p:", provider);
414 name = connman_provider_get_driver_name(provider);
418 vpn_driver_data = g_hash_table_lookup(driver_hash, name);
419 if (vpn_driver_data->vpn_driver->disconnect)
420 vpn_driver_data->vpn_driver->disconnect();
422 if (data->watch != 0)
423 connman_rtnl_remove_watch(data->watch);
426 data->state = VPN_STATE_DISCONNECT;
427 connman_task_stop(data->task);
432 static int vpn_remove(struct connman_provider *provider)
434 struct vpn_data *data;
436 data = connman_provider_get_data(provider);
440 if (data->watch != 0)
441 connman_rtnl_remove_watch(data->watch);
443 connman_task_stop(data->task);
445 g_usleep(G_USEC_PER_SEC);
450 static int vpn_save (struct connman_provider *provider, GKeyFile *keyfile)
452 struct vpn_driver_data *vpn_driver_data;
455 name = connman_provider_get_driver_name(provider);
456 vpn_driver_data = g_hash_table_lookup(driver_hash, name);
457 if (vpn_driver_data != NULL &&
458 vpn_driver_data->vpn_driver->save != NULL)
459 return vpn_driver_data->vpn_driver->save(provider, keyfile);
464 int vpn_register(const char *name, struct vpn_driver *vpn_driver,
467 struct vpn_driver_data *data;
469 data = g_try_new0(struct vpn_driver_data, 1);
474 data->program = program;
476 data->vpn_driver = vpn_driver;
478 data->provider_driver.name = name;
479 data->provider_driver.disconnect = vpn_disconnect;
480 data->provider_driver.connect = vpn_connect;
481 data->provider_driver.probe = vpn_probe;
482 data->provider_driver.remove = vpn_remove;
483 data->provider_driver.save = vpn_save;
485 if (driver_hash == NULL) {
486 driver_hash = g_hash_table_new_full(g_str_hash,
491 g_hash_table_insert(driver_hash, (char *)name, data);
493 connman_provider_driver_register(&data->provider_driver);
498 void vpn_unregister(const char *name)
500 struct vpn_driver_data *data;
502 data = g_hash_table_lookup(driver_hash, name);
506 connman_provider_driver_unregister(&data->provider_driver);
508 g_hash_table_remove(driver_hash, name);
510 if (g_hash_table_size(driver_hash) == 0)
511 g_hash_table_destroy(driver_hash);