5 * Copyright (C) 2010 BMW Car IT GmbH. All rights reserved.
6 * Copyright (C) 2012 Intel Corporation. All rights reserved.
8 * This program is free software; you can redistribute it and/or modify
9 * it under the terms of the GNU General Public License version 2 as
10 * published by the Free Software Foundation.
12 * This program is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 * GNU General Public License for more details.
17 * You should have received a copy of the GNU General Public License
18 * along with this program; if not, write to the Free Software
19 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
30 #include <sys/types.h>
37 #include <dbus/dbus.h>
40 #define CONNMAN_API_SUBJECT_TO_CHANGE
41 #include <connman/plugin.h>
42 #include <connman/provider.h>
43 #include <connman/log.h>
44 #include <connman/task.h>
45 #include <connman/dbus.h>
46 #include <connman/inet.h>
50 #define ARRAY_SIZE(a) (sizeof(a)/sizeof(a[0]))
68 const char *vpn_default;
71 { "L2TP.User", "name", OPT_ALL, NULL, OPT_STRING },
72 { "L2TP.BPS", "bps", OPT_L2, NULL, OPT_STRING },
73 { "L2TP.LengthBit", "length bit", OPT_L2, NULL, OPT_STRING },
74 { "L2TP.Challenge", "challenge", OPT_L2, NULL, OPT_STRING },
75 { "L2TP.DefaultRoute", "defaultroute", OPT_L2, NULL, OPT_STRING },
76 { "L2TP.FlowBit", "flow bit", OPT_L2, NULL, OPT_STRING },
77 { "L2TP.TunnelRWS", "tunnel rws", OPT_L2, NULL, OPT_STRING },
78 { "L2TP.Exclusive", "exclusive", OPT_L2, NULL, OPT_STRING },
79 { "L2TP.Autodial", "autodial", OPT_L2, "yes", OPT_STRING },
80 { "L2TP.Redial", "redial", OPT_L2, "yes", OPT_STRING },
81 { "L2TP.RedialTimeout", "redial timeout", OPT_L2, "10", OPT_STRING },
82 { "L2TP.MaxRedials", "max redials", OPT_L2, NULL, OPT_STRING },
83 { "L2TP.RequirePAP", "require pap", OPT_L2, "no", OPT_STRING },
84 { "L2TP.RequireCHAP", "require chap", OPT_L2, "yes", OPT_STRING },
85 { "L2TP.ReqAuth", "require authentication", OPT_L2, "no", OPT_STRING },
86 { "L2TP.AccessControl", "access control", OPT_L2G, "yes", OPT_STRING },
87 { "L2TP.AuthFile", "auth file", OPT_L2G, NULL, OPT_STRING },
88 { "L2TP.ForceUserSpace", "force userspace", OPT_L2G, NULL, OPT_STRING },
89 { "L2TP.ListenAddr", "listen-addr", OPT_L2G, NULL, OPT_STRING },
90 { "L2TP.Rand Source", "rand source", OPT_L2G, NULL, OPT_STRING },
91 { "L2TP.IPsecSaref", "ipsec saref", OPT_L2G, NULL, OPT_STRING },
92 { "L2TP.Port", "port", OPT_L2G, NULL, OPT_STRING },
93 { "L2TP.EchoFailure", "lcp-echo-failure", OPT_PPPD, "0", OPT_STRING },
94 { "L2TP.EchoInterval", "lcp-echo-interval", OPT_PPPD, "0", OPT_STRING },
95 { "L2TP.Debug", "debug", OPT_PPPD, NULL, OPT_STRING },
96 { "L2TP.RefuseEAP", "refuse-eap", OPT_PPPD, NULL, OPT_BOOL },
97 { "L2TP.RefusePAP", "refuse-pap", OPT_PPPD, NULL, OPT_BOOL },
98 { "L2TP.RefuseCHAP", "refuse-chap", OPT_PPPD, NULL, OPT_BOOL },
99 { "L2TP.RefuseMSCHAP", "refuse-mschap", OPT_PPPD, NULL, OPT_BOOL },
100 { "L2TP.RefuseMSCHAP2", "refuse-mschapv2", OPT_PPPD, NULL, OPT_BOOL },
101 { "L2TP.NoBSDComp", "nobsdcomp", OPT_PPPD, NULL, OPT_BOOL },
102 { "L2TP.NoPcomp", "nopcomp", OPT_PPPD, NULL, OPT_BOOL },
103 { "L2TP.UseAccomp", "accomp", OPT_PPPD, NULL, OPT_BOOL },
104 { "L2TP.NoDeflate", "nodeflatey", OPT_PPPD, NULL, OPT_BOOL },
105 { "L2TP.ReqMPPE", "require-mppe", OPT_PPPD, NULL, OPT_BOOL },
106 { "L2TP.ReqMPPE40", "require-mppe-40", OPT_PPPD, NULL, OPT_BOOL },
107 { "L2TP.ReqMPPE128", "require-mppe-128", OPT_PPPD, NULL, OPT_BOOL },
108 { "L2TP.ReqMPPEStateful", "mppe-stateful", OPT_PPPD, NULL, OPT_BOOL },
109 { "L2TP.NoVJ", "no-vj-comp", OPT_PPPD, NULL, OPT_BOOL },
112 static DBusConnection *connection;
114 static DBusMessage *l2tp_get_sec(struct connman_task *task,
115 DBusMessage *msg, void *user_data)
117 const char *user, *passwd;
118 struct vpn_provider *provider = user_data;
120 if (dbus_message_get_no_reply(msg) == FALSE) {
123 user = vpn_provider_get_string(provider, "L2TP.User");
124 passwd = vpn_provider_get_string(provider, "L2TP.Password");
126 if (user == NULL || strlen(user) == 0 ||
127 passwd == NULL || strlen(passwd) == 0)
130 reply = dbus_message_new_method_return(msg);
134 dbus_message_append_args(reply, DBUS_TYPE_STRING, &user,
135 DBUS_TYPE_STRING, &passwd,
144 static int l2tp_notify(DBusMessage *msg, struct vpn_provider *provider)
146 DBusMessageIter iter, dict;
147 const char *reason, *key, *value;
148 char *addressv4 = NULL, *netmask = NULL, *gateway = NULL;
149 char *ifname = NULL, *nameservers = NULL;
150 struct connman_ipaddress *ipaddress = NULL;
152 dbus_message_iter_init(msg, &iter);
154 dbus_message_iter_get_basic(&iter, &reason);
155 dbus_message_iter_next(&iter);
158 connman_error("No provider found");
159 return VPN_STATE_FAILURE;
162 if (strcmp(reason, "auth failed") == 0)
163 return VPN_STATE_AUTH_FAILURE;
165 if (strcmp(reason, "connect"))
166 return VPN_STATE_DISCONNECT;
168 dbus_message_iter_recurse(&iter, &dict);
170 while (dbus_message_iter_get_arg_type(&dict) == DBUS_TYPE_DICT_ENTRY) {
171 DBusMessageIter entry;
173 dbus_message_iter_recurse(&dict, &entry);
174 dbus_message_iter_get_basic(&entry, &key);
175 dbus_message_iter_next(&entry);
176 dbus_message_iter_get_basic(&entry, &value);
178 DBG("%s = %s", key, value);
180 if (!strcmp(key, "INTERNAL_IP4_ADDRESS")) {
181 vpn_provider_set_string(provider, "Address", value);
182 addressv4 = g_strdup(value);
185 if (!strcmp(key, "INTERNAL_IP4_NETMASK")) {
186 vpn_provider_set_string(provider, "Netmask", value);
187 netmask = g_strdup(value);
190 if (!strcmp(key, "INTERNAL_IP4_DNS")) {
191 vpn_provider_set_string(provider, "DNS", value);
192 nameservers = g_strdup(value);
195 if (!strcmp(key, "INTERNAL_IFNAME"))
196 ifname = g_strdup(value);
198 dbus_message_iter_next(&dict);
201 if (vpn_set_ifname(provider, ifname) < 0) {
206 return VPN_STATE_FAILURE;
209 if (addressv4 != NULL)
210 ipaddress = connman_ipaddress_alloc(AF_INET);
214 if (ipaddress == NULL) {
215 connman_error("No IP address for provider");
219 return VPN_STATE_FAILURE;
222 value = vpn_provider_get_string(provider, "HostIP");
224 vpn_provider_set_string(provider, "Gateway", value);
225 gateway = g_strdup(value);
228 if (addressv4 != NULL)
229 connman_ipaddress_set_ipv4(ipaddress, addressv4, netmask,
232 vpn_provider_set_ipaddress(provider, ipaddress);
233 vpn_provider_set_nameservers(provider, nameservers);
239 connman_ipaddress_free(ipaddress);
241 return VPN_STATE_CONNECT;
244 static int l2tp_save(struct vpn_provider *provider, GKeyFile *keyfile)
249 for (i = 0; i < (int)ARRAY_SIZE(pppd_options); i++) {
250 if (strncmp(pppd_options[i].cm_opt, "L2TP.", 5) == 0) {
251 option = vpn_provider_get_string(provider,
252 pppd_options[i].cm_opt);
256 g_key_file_set_string(keyfile,
257 vpn_provider_get_save_group(provider),
258 pppd_options[i].cm_opt, option);
264 static ssize_t full_write(int fd, const void *buf, size_t len)
269 byte_write = write(fd, buf, len);
270 if (byte_write < 0) {
271 connman_error("failed to write config to l2tp: %s\n",
282 static ssize_t l2tp_write_bool_option(int fd,
283 const char *key, const char *value)
288 if (key != NULL && value != NULL) {
289 if (strcasecmp(value, "yes") == 0 ||
290 strcasecmp(value, "true") == 0 ||
291 strcmp(value, "1") == 0) {
292 buf = g_strdup_printf("%s\n", key);
293 ret = full_write(fd, buf, strlen(buf));
302 static int l2tp_write_option(int fd, const char *key, const char *value)
309 buf = g_strdup_printf("%s %s\n", key, value);
311 buf = g_strdup_printf("%s\n", key);
313 ret = full_write(fd, buf, strlen(buf));
321 static int l2tp_write_section(int fd, const char *key, const char *value)
326 if (key != NULL && value != NULL) {
327 buf = g_strdup_printf("%s = %s\n", key, value);
328 ret = full_write(fd, buf, strlen(buf));
336 static int write_pppd_option(struct vpn_provider *provider, int fd)
341 l2tp_write_option(fd, "nodetach", NULL);
342 l2tp_write_option(fd, "lock", NULL);
343 l2tp_write_option(fd, "usepeerdns", NULL);
344 l2tp_write_option(fd, "noipdefault", NULL);
345 l2tp_write_option(fd, "noauth", NULL);
346 l2tp_write_option(fd, "nodefaultroute", NULL);
347 l2tp_write_option(fd, "ipparam", "l2tp_plugin");
349 for (i = 0; i < (int)ARRAY_SIZE(pppd_options); i++) {
350 if (pppd_options[i].sub != OPT_ALL &&
351 pppd_options[i].sub != OPT_PPPD)
354 opt_s = vpn_provider_get_string(provider,
355 pppd_options[i].cm_opt);
357 opt_s = pppd_options[i].vpn_default;
362 if (pppd_options[i].type == OPT_STRING)
363 l2tp_write_option(fd,
364 pppd_options[i].pppd_opt, opt_s);
365 else if (pppd_options[i].type == OPT_BOOL)
366 l2tp_write_bool_option(fd,
367 pppd_options[i].pppd_opt, opt_s);
370 l2tp_write_option(fd, "plugin",
371 SCRIPTDIR "/libppp-plugin.so");
377 static int l2tp_write_fields(struct vpn_provider *provider,
383 for (i = 0; i < (int)ARRAY_SIZE(pppd_options); i++) {
384 if (pppd_options[i].sub != sub)
387 opt_s = vpn_provider_get_string(provider,
388 pppd_options[i].cm_opt);
390 opt_s = pppd_options[i].vpn_default;
395 if (pppd_options[i].type == OPT_STRING)
396 l2tp_write_section(fd,
397 pppd_options[i].pppd_opt, opt_s);
398 else if (pppd_options[i].type == OPT_BOOL)
399 l2tp_write_bool_option(fd,
400 pppd_options[i].pppd_opt, opt_s);
406 static int l2tp_write_config(struct vpn_provider *provider,
407 const char *pppd_name, int fd)
411 l2tp_write_option(fd, "[global]", NULL);
412 l2tp_write_fields(provider, fd, OPT_L2G);
414 l2tp_write_option(fd, "[lac l2tp]", NULL);
416 option = vpn_provider_get_string(provider, "Host");
417 l2tp_write_option(fd, "lns =", option);
419 l2tp_write_fields(provider, fd, OPT_ALL);
420 l2tp_write_fields(provider, fd, OPT_L2);
422 l2tp_write_option(fd, "pppoptfile =", pppd_name);
427 static void l2tp_died(struct connman_task *task, int exit_code, void *user_data)
431 vpn_died(task, exit_code, user_data);
433 conf_file = g_strdup_printf("/var/run/connman/connman-xl2tpd.conf");
437 conf_file = g_strdup_printf("/var/run/connman/connman-ppp-option.conf");
442 static int l2tp_connect(struct vpn_provider *provider,
443 struct connman_task *task, const char *if_name)
446 char *l2tp_name, *pppd_name;
447 int l2tp_fd, pppd_fd;
450 if (connman_task_set_notify(task, "getsec",
451 l2tp_get_sec, provider))
454 host = vpn_provider_get_string(provider, "Host");
456 connman_error("Host not set; cannot enable VPN");
460 l2tp_name = g_strdup_printf("/var/run/connman/connman-xl2tpd.conf");
462 l2tp_fd = open(l2tp_name, O_RDWR|O_CREAT|O_TRUNC, S_IRUSR|S_IWUSR);
465 connman_error("Error writing l2tp config");
469 pppd_name = g_strdup_printf("/var/run/connman/connman-ppp-option.conf");
471 pppd_fd = open(pppd_name, O_RDWR|O_CREAT|O_TRUNC, S_IRUSR|S_IWUSR);
473 connman_error("Error writing pppd config");
480 l2tp_write_config(provider, pppd_name, l2tp_fd);
482 write_pppd_option(provider, pppd_fd);
484 connman_task_add_argument(task, "-D", NULL);
485 connman_task_add_argument(task, "-c", l2tp_name);
490 err = connman_task_run(task, l2tp_died, provider,
493 connman_error("l2tp failed to start");
500 static int l2tp_error_code(int exit_code)
504 return CONNMAN_PROVIDER_ERROR_CONNECT_FAILED;
506 return CONNMAN_PROVIDER_ERROR_UNKNOWN;
510 static struct vpn_driver vpn_driver = {
511 .flags = VPN_FLAG_NO_TUN,
512 .notify = l2tp_notify,
513 .connect = l2tp_connect,
514 .error_code = l2tp_error_code,
518 static int l2tp_init(void)
520 connection = connman_dbus_get_connection();
522 return vpn_register("l2tp", &vpn_driver, L2TP);
525 static void l2tp_exit(void)
527 vpn_unregister("l2tp");
529 dbus_connection_unref(connection);
532 CONNMAN_PLUGIN_DEFINE(l2tp, "l2tp plugin", VERSION,
533 CONNMAN_PLUGIN_PRIORITY_DEFAULT, l2tp_init, l2tp_exit)