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>
47 #include <connman/agent.h>
48 #include <connman/setting.h>
49 #include <connman/vpn-dbus.h>
51 #include "../vpn-provider.h"
52 #include "../vpn-agent.h"
56 #define ARRAY_SIZE(a) (sizeof(a)/sizeof(a[0]))
74 const char *vpn_default;
77 { "L2TP.User", "name", OPT_ALL, NULL, OPT_STRING },
78 { "L2TP.BPS", "bps", OPT_L2, NULL, OPT_STRING },
79 { "L2TP.LengthBit", "length bit", OPT_L2, NULL, OPT_STRING },
80 { "L2TP.Challenge", "challenge", OPT_L2, NULL, OPT_STRING },
81 { "L2TP.DefaultRoute", "defaultroute", OPT_L2, NULL, OPT_STRING },
82 { "L2TP.FlowBit", "flow bit", OPT_L2, NULL, OPT_STRING },
83 { "L2TP.TunnelRWS", "tunnel rws", OPT_L2, NULL, OPT_STRING },
84 { "L2TP.Exclusive", "exclusive", OPT_L2, NULL, OPT_STRING },
85 { "L2TP.Autodial", "autodial", OPT_L2, "yes", OPT_STRING },
86 { "L2TP.Redial", "redial", OPT_L2, "yes", OPT_STRING },
87 { "L2TP.RedialTimeout", "redial timeout", OPT_L2, "10", OPT_STRING },
88 { "L2TP.MaxRedials", "max redials", OPT_L2, NULL, OPT_STRING },
89 { "L2TP.RequirePAP", "require pap", OPT_L2, "no", OPT_STRING },
90 { "L2TP.RequireCHAP", "require chap", OPT_L2, "yes", OPT_STRING },
91 { "L2TP.ReqAuth", "require authentication", OPT_L2, "no", OPT_STRING },
92 { "L2TP.AccessControl", "access control", OPT_L2G, "yes", OPT_STRING },
93 { "L2TP.AuthFile", "auth file", OPT_L2G, NULL, OPT_STRING },
94 { "L2TP.ForceUserSpace", "force userspace", OPT_L2G, NULL, OPT_STRING },
95 { "L2TP.ListenAddr", "listen-addr", OPT_L2G, NULL, OPT_STRING },
96 { "L2TP.Rand Source", "rand source", OPT_L2G, NULL, OPT_STRING },
97 { "L2TP.IPsecSaref", "ipsec saref", OPT_L2G, NULL, OPT_STRING },
98 { "L2TP.Port", "port", OPT_L2G, NULL, OPT_STRING },
99 { "L2TP.EchoFailure", "lcp-echo-failure", OPT_PPPD, "0", OPT_STRING },
100 { "L2TP.EchoInterval", "lcp-echo-interval", OPT_PPPD, "0", OPT_STRING },
101 { "L2TP.Debug", "debug", OPT_PPPD, NULL, OPT_STRING },
102 { "L2TP.RefuseEAP", "refuse-eap", OPT_PPPD, NULL, OPT_BOOL },
103 { "L2TP.RefusePAP", "refuse-pap", OPT_PPPD, NULL, OPT_BOOL },
104 { "L2TP.RefuseCHAP", "refuse-chap", OPT_PPPD, NULL, OPT_BOOL },
105 { "L2TP.RefuseMSCHAP", "refuse-mschap", OPT_PPPD, NULL, OPT_BOOL },
106 { "L2TP.RefuseMSCHAP2", "refuse-mschapv2", OPT_PPPD, NULL, OPT_BOOL },
107 { "L2TP.NoBSDComp", "nobsdcomp", OPT_PPPD, NULL, OPT_BOOL },
108 { "L2TP.NoPcomp", "nopcomp", OPT_PPPD, NULL, OPT_BOOL },
109 { "L2TP.UseAccomp", "accomp", OPT_PPPD, NULL, OPT_BOOL },
110 { "L2TP.NoDeflate", "nodeflatey", OPT_PPPD, NULL, OPT_BOOL },
111 { "L2TP.ReqMPPE", "require-mppe", OPT_PPPD, NULL, OPT_BOOL },
112 { "L2TP.ReqMPPE40", "require-mppe-40", OPT_PPPD, NULL, OPT_BOOL },
113 { "L2TP.ReqMPPE128", "require-mppe-128", OPT_PPPD, NULL, OPT_BOOL },
114 { "L2TP.ReqMPPEStateful", "mppe-stateful", OPT_PPPD, NULL, OPT_BOOL },
115 { "L2TP.NoVJ", "no-vj-comp", OPT_PPPD, NULL, OPT_BOOL },
118 static DBusConnection *connection;
120 struct l2tp_private_data {
121 struct connman_task *task;
123 vpn_provider_connect_cb_t cb;
127 static DBusMessage *l2tp_get_sec(struct connman_task *task,
128 DBusMessage *msg, void *user_data)
130 const char *user, *passwd;
131 struct vpn_provider *provider = user_data;
133 if (dbus_message_get_no_reply(msg) == FALSE) {
136 user = vpn_provider_get_string(provider, "L2TP.User");
137 passwd = vpn_provider_get_string(provider, "L2TP.Password");
139 if (user == NULL || strlen(user) == 0 ||
140 passwd == NULL || strlen(passwd) == 0)
143 reply = dbus_message_new_method_return(msg);
147 dbus_message_append_args(reply, DBUS_TYPE_STRING, &user,
148 DBUS_TYPE_STRING, &passwd,
157 static int l2tp_notify(DBusMessage *msg, struct vpn_provider *provider)
159 DBusMessageIter iter, dict;
160 const char *reason, *key, *value;
161 char *addressv4 = NULL, *netmask = NULL, *gateway = NULL;
162 char *ifname = NULL, *nameservers = NULL;
163 struct connman_ipaddress *ipaddress = NULL;
165 dbus_message_iter_init(msg, &iter);
167 dbus_message_iter_get_basic(&iter, &reason);
168 dbus_message_iter_next(&iter);
171 connman_error("No provider found");
172 return VPN_STATE_FAILURE;
175 if (strcmp(reason, "auth failed") == 0)
176 return VPN_STATE_AUTH_FAILURE;
178 if (strcmp(reason, "connect"))
179 return VPN_STATE_DISCONNECT;
181 dbus_message_iter_recurse(&iter, &dict);
183 while (dbus_message_iter_get_arg_type(&dict) == DBUS_TYPE_DICT_ENTRY) {
184 DBusMessageIter entry;
186 dbus_message_iter_recurse(&dict, &entry);
187 dbus_message_iter_get_basic(&entry, &key);
188 dbus_message_iter_next(&entry);
189 dbus_message_iter_get_basic(&entry, &value);
191 DBG("%s = %s", key, value);
193 if (!strcmp(key, "INTERNAL_IP4_ADDRESS")) {
194 vpn_provider_set_string(provider, "Address", value);
195 addressv4 = g_strdup(value);
198 if (!strcmp(key, "INTERNAL_IP4_NETMASK")) {
199 vpn_provider_set_string(provider, "Netmask", value);
200 netmask = g_strdup(value);
203 if (!strcmp(key, "INTERNAL_IP4_DNS")) {
204 vpn_provider_set_string(provider, "DNS", value);
205 nameservers = g_strdup(value);
208 if (!strcmp(key, "INTERNAL_IFNAME"))
209 ifname = g_strdup(value);
211 dbus_message_iter_next(&dict);
214 if (vpn_set_ifname(provider, ifname) < 0) {
219 return VPN_STATE_FAILURE;
222 if (addressv4 != NULL)
223 ipaddress = connman_ipaddress_alloc(AF_INET);
227 if (ipaddress == NULL) {
228 connman_error("No IP address for provider");
232 return VPN_STATE_FAILURE;
235 value = vpn_provider_get_string(provider, "HostIP");
237 vpn_provider_set_string(provider, "Gateway", value);
238 gateway = g_strdup(value);
241 if (addressv4 != NULL)
242 connman_ipaddress_set_ipv4(ipaddress, addressv4, netmask,
245 vpn_provider_set_ipaddress(provider, ipaddress);
246 vpn_provider_set_nameservers(provider, nameservers);
252 connman_ipaddress_free(ipaddress);
254 return VPN_STATE_CONNECT;
257 static int l2tp_save(struct vpn_provider *provider, GKeyFile *keyfile)
262 for (i = 0; i < (int)ARRAY_SIZE(pppd_options); i++) {
263 if (strncmp(pppd_options[i].cm_opt, "L2TP.", 5) == 0) {
264 option = vpn_provider_get_string(provider,
265 pppd_options[i].cm_opt);
269 g_key_file_set_string(keyfile,
270 vpn_provider_get_save_group(provider),
271 pppd_options[i].cm_opt, option);
278 static ssize_t full_write(int fd, const void *buf, size_t len)
283 byte_write = write(fd, buf, len);
284 if (byte_write < 0) {
285 connman_error("failed to write config to l2tp: %s\n",
296 static ssize_t l2tp_write_bool_option(int fd,
297 const char *key, const char *value)
302 if (key != NULL && value != NULL) {
303 if (strcasecmp(value, "yes") == 0 ||
304 strcasecmp(value, "true") == 0 ||
305 strcmp(value, "1") == 0) {
306 buf = g_strdup_printf("%s\n", key);
307 ret = full_write(fd, buf, strlen(buf));
316 static int l2tp_write_option(int fd, const char *key, const char *value)
323 buf = g_strdup_printf("%s %s\n", key, value);
325 buf = g_strdup_printf("%s\n", key);
327 ret = full_write(fd, buf, strlen(buf));
335 static int l2tp_write_section(int fd, const char *key, const char *value)
340 if (key != NULL && value != NULL) {
341 buf = g_strdup_printf("%s = %s\n", key, value);
342 ret = full_write(fd, buf, strlen(buf));
350 static int write_pppd_option(struct vpn_provider *provider, int fd)
355 l2tp_write_option(fd, "nodetach", NULL);
356 l2tp_write_option(fd, "lock", NULL);
357 l2tp_write_option(fd, "usepeerdns", NULL);
358 l2tp_write_option(fd, "noipdefault", NULL);
359 l2tp_write_option(fd, "noauth", NULL);
360 l2tp_write_option(fd, "nodefaultroute", NULL);
361 l2tp_write_option(fd, "ipparam", "l2tp_plugin");
363 for (i = 0; i < (int)ARRAY_SIZE(pppd_options); i++) {
364 if (pppd_options[i].sub != OPT_ALL &&
365 pppd_options[i].sub != OPT_PPPD)
368 opt_s = vpn_provider_get_string(provider,
369 pppd_options[i].cm_opt);
371 opt_s = pppd_options[i].vpn_default;
376 if (pppd_options[i].type == OPT_STRING)
377 l2tp_write_option(fd,
378 pppd_options[i].pppd_opt, opt_s);
379 else if (pppd_options[i].type == OPT_BOOL)
380 l2tp_write_bool_option(fd,
381 pppd_options[i].pppd_opt, opt_s);
384 l2tp_write_option(fd, "plugin",
385 SCRIPTDIR "/libppp-plugin.so");
391 static int l2tp_write_fields(struct vpn_provider *provider,
397 for (i = 0; i < (int)ARRAY_SIZE(pppd_options); i++) {
398 if (pppd_options[i].sub != sub)
401 opt_s = vpn_provider_get_string(provider,
402 pppd_options[i].cm_opt);
404 opt_s = pppd_options[i].vpn_default;
409 if (pppd_options[i].type == OPT_STRING)
410 l2tp_write_section(fd,
411 pppd_options[i].pppd_opt, opt_s);
412 else if (pppd_options[i].type == OPT_BOOL)
413 l2tp_write_bool_option(fd,
414 pppd_options[i].pppd_opt, opt_s);
420 static int l2tp_write_config(struct vpn_provider *provider,
421 const char *pppd_name, int fd)
425 l2tp_write_option(fd, "[global]", NULL);
426 l2tp_write_fields(provider, fd, OPT_L2G);
428 l2tp_write_option(fd, "[lac l2tp]", NULL);
430 option = vpn_provider_get_string(provider, "Host");
431 l2tp_write_option(fd, "lns =", option);
433 l2tp_write_fields(provider, fd, OPT_ALL);
434 l2tp_write_fields(provider, fd, OPT_L2);
436 l2tp_write_option(fd, "pppoptfile =", pppd_name);
441 static void l2tp_died(struct connman_task *task, int exit_code, void *user_data)
445 vpn_died(task, exit_code, user_data);
447 conf_file = g_strdup_printf("/var/run/connman/connman-xl2tpd.conf");
451 conf_file = g_strdup_printf("/var/run/connman/connman-ppp-option.conf");
456 struct request_input_reply {
457 struct vpn_provider *provider;
458 vpn_provider_password_cb_t callback;
462 static void request_input_reply(DBusMessage *reply, void *user_data)
464 struct request_input_reply *l2tp_reply = user_data;
465 const char *error = NULL;
466 char *username = NULL, *password = NULL;
468 DBusMessageIter iter, dict;
470 DBG("provider %p", l2tp_reply->provider);
472 if (dbus_message_get_type(reply) == DBUS_MESSAGE_TYPE_ERROR) {
473 error = dbus_message_get_error_name(reply);
477 if (vpn_agent_check_reply_has_dict(reply) == FALSE)
480 dbus_message_iter_init(reply, &iter);
481 dbus_message_iter_recurse(&iter, &dict);
482 while (dbus_message_iter_get_arg_type(&dict) == DBUS_TYPE_DICT_ENTRY) {
483 DBusMessageIter entry, value;
486 dbus_message_iter_recurse(&dict, &entry);
487 if (dbus_message_iter_get_arg_type(&entry) != DBUS_TYPE_STRING)
490 dbus_message_iter_get_basic(&entry, &key);
492 if (g_str_equal(key, "Username")) {
493 dbus_message_iter_next(&entry);
494 if (dbus_message_iter_get_arg_type(&entry)
495 != DBUS_TYPE_VARIANT)
497 dbus_message_iter_recurse(&entry, &value);
498 if (dbus_message_iter_get_arg_type(&value)
501 dbus_message_iter_get_basic(&value, &str);
502 username = g_strdup(str);
505 if (g_str_equal(key, "Password")) {
506 dbus_message_iter_next(&entry);
507 if (dbus_message_iter_get_arg_type(&entry)
508 != DBUS_TYPE_VARIANT)
510 dbus_message_iter_recurse(&entry, &value);
511 if (dbus_message_iter_get_arg_type(&value)
514 dbus_message_iter_get_basic(&value, &str);
515 password = g_strdup(str);
518 dbus_message_iter_next(&dict);
522 l2tp_reply->callback(l2tp_reply->provider, username, password, error,
523 l2tp_reply->user_data);
531 typedef void (* request_cb_t)(struct vpn_provider *provider,
532 const char *username, const char *password,
533 const char *error, void *user_data);
535 static int request_input(struct vpn_provider *provider,
536 request_cb_t callback, void *user_data)
538 DBusMessage *message;
539 const char *path, *agent_sender, *agent_path;
540 DBusMessageIter iter;
541 DBusMessageIter dict;
542 struct request_input_reply *l2tp_reply;
545 connman_agent_get_info(&agent_sender, &agent_path);
547 if (provider == NULL || agent_path == NULL || callback == NULL)
550 message = dbus_message_new_method_call(agent_sender, agent_path,
556 dbus_message_iter_init_append(message, &iter);
558 path = vpn_provider_get_path(provider);
559 dbus_message_iter_append_basic(&iter,
560 DBUS_TYPE_OBJECT_PATH, &path);
562 connman_dbus_dict_open(&iter, &dict);
564 vpn_agent_append_user_info(&dict, provider, "L2TP.User");
566 vpn_agent_append_host_and_name(&dict, provider);
568 connman_dbus_dict_close(&iter, &dict);
570 l2tp_reply = g_try_new0(struct request_input_reply, 1);
571 if (l2tp_reply == NULL) {
572 dbus_message_unref(message);
576 l2tp_reply->provider = provider;
577 l2tp_reply->callback = callback;
578 l2tp_reply->user_data = user_data;
580 err = connman_agent_queue_message(provider, message,
581 connman_timeout_input_request(),
582 request_input_reply, l2tp_reply);
583 if (err < 0 && err != -EBUSY) {
584 DBG("error %d sending agent request", err);
585 dbus_message_unref(message);
590 dbus_message_unref(message);
595 static int run_connect(struct vpn_provider *provider,
596 struct connman_task *task, const char *if_name,
597 vpn_provider_connect_cb_t cb, void *user_data,
598 const char *username, const char *password)
600 char *l2tp_name, *pppd_name;
601 int l2tp_fd, pppd_fd;
604 if (username == NULL || password == NULL) {
605 DBG("Cannot connect username %s password %p",
611 vpn_provider_set_string(provider, "L2TP.User", username);
612 vpn_provider_set_string(provider, "L2TP.Password", password);
614 DBG("username %s password %p", username, password);
616 l2tp_name = g_strdup_printf("/var/run/connman/connman-xl2tpd.conf");
618 l2tp_fd = open(l2tp_name, O_RDWR|O_CREAT|O_TRUNC, S_IRUSR|S_IWUSR);
621 connman_error("Error writing l2tp config");
626 pppd_name = g_strdup_printf("/var/run/connman/connman-ppp-option.conf");
628 pppd_fd = open(pppd_name, O_RDWR|O_CREAT|O_TRUNC, S_IRUSR|S_IWUSR);
630 connman_error("Error writing pppd config");
638 l2tp_write_config(provider, pppd_name, l2tp_fd);
640 write_pppd_option(provider, pppd_fd);
642 connman_task_add_argument(task, "-D", NULL);
643 connman_task_add_argument(task, "-c", l2tp_name);
648 err = connman_task_run(task, l2tp_died, provider,
651 connman_error("l2tp failed to start");
658 cb(provider, user_data, err);
663 static void free_private_data(struct l2tp_private_data *data)
665 g_free(data->if_name);
669 static void request_input_cb(struct vpn_provider *provider,
670 const char *username,
671 const char *password,
672 const char *error, void *user_data)
674 struct l2tp_private_data *data = user_data;
676 if (username == NULL || password == NULL)
677 DBG("Requesting username %s or password failed, error %s",
679 else if (error != NULL)
680 DBG("error %s", error);
682 run_connect(provider, data->task, data->if_name, data->cb,
683 data->user_data, username, password);
685 free_private_data(data);
688 static int l2tp_connect(struct vpn_provider *provider,
689 struct connman_task *task, const char *if_name,
690 vpn_provider_connect_cb_t cb, void *user_data)
692 const char *username, *password;
695 if (connman_task_set_notify(task, "getsec",
696 l2tp_get_sec, provider) != 0) {
701 username = vpn_provider_get_string(provider, "L2TP.User");
702 password = vpn_provider_get_string(provider, "L2TP.Password");
704 DBG("user %s password %p", username, password);
706 if (username == NULL || password == NULL) {
707 struct l2tp_private_data *data;
709 data = g_try_new0(struct l2tp_private_data, 1);
714 data->if_name = g_strdup(if_name);
716 data->user_data = user_data;
718 err = request_input(provider, request_input_cb, data);
719 if (err != -EINPROGRESS) {
720 free_private_data(data);
727 return run_connect(provider, task, if_name, cb, user_data,
732 cb(provider, user_data, err);
737 static int l2tp_error_code(int exit_code)
741 return CONNMAN_PROVIDER_ERROR_CONNECT_FAILED;
743 return CONNMAN_PROVIDER_ERROR_UNKNOWN;
747 static void l2tp_disconnect(struct vpn_provider *provider)
749 vpn_provider_set_string(provider, "L2TP.Password", NULL);
752 static struct vpn_driver vpn_driver = {
753 .flags = VPN_FLAG_NO_TUN,
754 .notify = l2tp_notify,
755 .connect = l2tp_connect,
756 .error_code = l2tp_error_code,
758 .disconnect = l2tp_disconnect,
761 static int l2tp_init(void)
763 connection = connman_dbus_get_connection();
765 return vpn_register("l2tp", &vpn_driver, L2TP);
768 static void l2tp_exit(void)
770 vpn_unregister("l2tp");
772 dbus_connection_unref(connection);
775 CONNMAN_PLUGIN_DEFINE(l2tp, "l2tp plugin", VERSION,
776 CONNMAN_PLUGIN_PRIORITY_DEFAULT, l2tp_init, l2tp_exit)