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 = VPN_STATE_FAILURE;
110 enum connman_provider_error ret;
112 DBG("provider %p data %p", provider, data);
119 kill_tun(data->if_name);
120 connman_provider_set_data(provider, NULL);
121 connman_rtnl_remove_watch(data->watch);
124 if (state != VPN_STATE_READY && state != VPN_STATE_DISCONNECT) {
126 struct vpn_driver_data *vpn_data;
128 name = connman_provider_get_driver_name(provider);
129 vpn_data = g_hash_table_lookup(driver_hash, name);
130 if (vpn_data != NULL &&
131 vpn_data->vpn_driver->error_code != NULL)
132 ret = vpn_data->vpn_driver->error_code(exit_code);
134 ret = CONNMAN_PROVIDER_ERROR_UNKNOWN;
136 connman_provider_indicate_error(provider, ret);
138 connman_provider_set_state(provider,
139 CONNMAN_PROVIDER_STATE_IDLE);
141 connman_provider_set_index(provider, -1);
142 connman_provider_unref(data->provider);
145 connman_task_destroy(task);
148 static void vpn_newlink(unsigned flags, unsigned change, void *user_data)
150 struct connman_provider *provider = user_data;
151 struct vpn_data *data = connman_provider_get_data(provider);
153 if ((data->flags & IFF_UP) != (flags & IFF_UP)) {
154 if (flags & IFF_UP) {
155 data->state = VPN_STATE_READY;
156 connman_provider_set_state(provider,
157 CONNMAN_PROVIDER_STATE_READY);
163 static void vpn_notify(struct connman_task *task,
164 DBusMessage *msg, void *user_data)
166 struct connman_provider *provider = user_data;
167 struct vpn_data *data;
168 struct vpn_driver_data *vpn_driver_data;
172 data = connman_provider_get_data(provider);
174 name = connman_provider_get_driver_name(provider);
175 vpn_driver_data = g_hash_table_lookup(driver_hash, name);
176 if (vpn_driver_data == NULL)
179 state = vpn_driver_data->vpn_driver->notify(msg, provider);
181 case VPN_STATE_CONNECT:
182 case VPN_STATE_READY:
183 index = connman_provider_get_index(provider);
184 data->watch = connman_rtnl_add_newlink_watch(index,
185 vpn_newlink, provider);
186 connman_inet_ifup(index);
189 case VPN_STATE_UNKNOWN:
191 case VPN_STATE_DISCONNECT:
192 case VPN_STATE_FAILURE:
193 connman_provider_set_state(provider,
194 CONNMAN_PROVIDER_STATE_DISCONNECT);
197 case VPN_STATE_AUTH_FAILURE:
198 connman_provider_indicate_error(provider,
199 CONNMAN_PROVIDER_ERROR_AUTH_FAILED);
204 static int vpn_connect(struct connman_provider *provider)
206 struct vpn_data *data = connman_provider_get_data(provider);
207 struct vpn_driver_data *vpn_driver_data;
216 data = g_try_new0(struct vpn_data, 1);
220 data->provider = connman_provider_ref(provider);
224 data->state = VPN_STATE_IDLE;
226 connman_provider_set_data(provider, data);
228 name = connman_provider_get_driver_name(provider);
229 vpn_driver_data = g_hash_table_lookup(driver_hash, name);
231 fd = open("/dev/net/tun", O_RDWR);
234 connman_error("Failed to open /dev/net/tun: %s",
240 memset(&ifr, 0, sizeof(ifr));
241 ifr.ifr_flags = IFF_TUN | IFF_NO_PI;
243 for (i = 0; i < 256; i++) {
244 sprintf(ifr.ifr_name, "vpn%d", i);
246 if (!ioctl(fd, TUNSETIFF, (void *)&ifr))
251 connman_error("Failed to find available tun device");
257 data->if_name = (char *)g_strdup(ifr.ifr_name);
258 if (data->if_name == NULL) {
259 connman_error("Failed to allocate memory");
265 if (ioctl(fd, TUNSETPERSIST, 1)) {
267 connman_error("Failed to set tun persistent: %s",
276 index = connman_inet_ifindex(data->if_name);
278 connman_error("Failed to get tun ifindex");
279 kill_tun(data->if_name);
283 connman_provider_set_index(provider, index);
285 data->task = connman_task_create(vpn_driver_data->program);
287 if (data->task == NULL) {
289 kill_tun(data->if_name);
293 if (connman_task_set_notify(data->task, "notify",
294 vpn_notify, provider)) {
296 kill_tun(data->if_name);
297 connman_task_destroy(data->task);
302 ret = vpn_driver_data->vpn_driver->connect(provider, data->task,
305 kill_tun(data->if_name);
306 connman_task_destroy(data->task);
311 DBG("%s started with dev %s",
312 vpn_driver_data->provider_driver.name, data->if_name);
314 data->state = VPN_STATE_CONNECT;
319 connman_provider_set_index(provider, -1);
320 connman_provider_set_data(provider, NULL);
321 connman_provider_unref(data->provider);
327 static int vpn_probe(struct connman_provider *provider)
332 static int vpn_disconnect(struct connman_provider *provider)
334 struct vpn_data *data = connman_provider_get_data(provider);
335 struct vpn_driver_data *vpn_driver_data;
338 DBG("disconnect provider %p:", provider);
343 name = connman_provider_get_driver_name(provider);
344 vpn_driver_data = g_hash_table_lookup(driver_hash, name);
345 if (vpn_driver_data->vpn_driver->disconnect)
346 vpn_driver_data->vpn_driver->disconnect();
348 if (data->watch != 0)
349 connman_rtnl_remove_watch(data->watch);
352 data->state = VPN_STATE_DISCONNECT;
353 connman_task_stop(data->task);
358 static int vpn_remove(struct connman_provider *provider)
360 struct vpn_data *data;
362 data = connman_provider_get_data(provider);
363 connman_provider_set_data(provider, NULL);
367 if (data->watch != 0)
368 connman_rtnl_remove_watch(data->watch);
370 connman_task_stop(data->task);
372 g_usleep(G_USEC_PER_SEC);
373 kill_tun(data->if_name);
377 int vpn_register(const char *name, struct vpn_driver *vpn_driver,
380 struct vpn_driver_data *data;
382 data = g_try_new0(struct vpn_driver_data, 1);
387 data->program = program;
389 data->vpn_driver = vpn_driver;
391 data->provider_driver.name = name;
392 data->provider_driver.disconnect = vpn_disconnect;
393 data->provider_driver.connect = vpn_connect;
394 data->provider_driver.probe = vpn_probe;
395 data->provider_driver.remove = vpn_remove;
397 if (driver_hash == NULL) {
398 driver_hash = g_hash_table_new_full(g_str_hash,
403 g_hash_table_insert(driver_hash, (char *)name, data);
405 connman_provider_driver_register(&data->provider_driver);
410 void vpn_unregister(const char *name)
412 struct vpn_driver_data *data;
414 data = g_hash_table_lookup(driver_hash, name);
418 connman_provider_driver_unregister(&data->provider_driver);
420 g_hash_table_remove(driver_hash, name);
422 if (g_hash_table_size(driver_hash) == 0)
423 g_hash_table_destroy(driver_hash);