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"
55 #define ARRAY_SIZE(a) (sizeof(a)/sizeof(a[0]))
73 const char *vpn_default;
76 { "L2TP.User", "name", OPT_ALL, NULL, OPT_STRING },
77 { "L2TP.BPS", "bps", OPT_L2, NULL, OPT_STRING },
78 { "L2TP.LengthBit", "length bit", OPT_L2, NULL, OPT_STRING },
79 { "L2TP.Challenge", "challenge", OPT_L2, NULL, OPT_STRING },
80 { "L2TP.DefaultRoute", "defaultroute", OPT_L2, NULL, OPT_STRING },
81 { "L2TP.FlowBit", "flow bit", OPT_L2, NULL, OPT_STRING },
82 { "L2TP.TunnelRWS", "tunnel rws", OPT_L2, NULL, OPT_STRING },
83 { "L2TP.Exclusive", "exclusive", OPT_L2, NULL, OPT_STRING },
84 { "L2TP.Autodial", "autodial", OPT_L2, "yes", OPT_STRING },
85 { "L2TP.Redial", "redial", OPT_L2, "yes", OPT_STRING },
86 { "L2TP.RedialTimeout", "redial timeout", OPT_L2, "10", OPT_STRING },
87 { "L2TP.MaxRedials", "max redials", OPT_L2, NULL, OPT_STRING },
88 { "L2TP.RequirePAP", "require pap", OPT_L2, "no", OPT_STRING },
89 { "L2TP.RequireCHAP", "require chap", OPT_L2, "yes", OPT_STRING },
90 { "L2TP.ReqAuth", "require authentication", OPT_L2, "no", OPT_STRING },
91 { "L2TP.AccessControl", "access control", OPT_L2G, "yes", OPT_STRING },
92 { "L2TP.AuthFile", "auth file", OPT_L2G, NULL, OPT_STRING },
93 { "L2TP.ForceUserSpace", "force userspace", OPT_L2G, NULL, OPT_STRING },
94 { "L2TP.ListenAddr", "listen-addr", OPT_L2G, NULL, OPT_STRING },
95 { "L2TP.Rand Source", "rand source", OPT_L2G, NULL, OPT_STRING },
96 { "L2TP.IPsecSaref", "ipsec saref", OPT_L2G, NULL, OPT_STRING },
97 { "L2TP.Port", "port", OPT_L2G, NULL, OPT_STRING },
98 { "L2TP.EchoFailure", "lcp-echo-failure", OPT_PPPD, "0", OPT_STRING },
99 { "L2TP.EchoInterval", "lcp-echo-interval", OPT_PPPD, "0", OPT_STRING },
100 { "L2TP.Debug", "debug", OPT_PPPD, NULL, OPT_STRING },
101 { "L2TP.RefuseEAP", "refuse-eap", OPT_PPPD, NULL, OPT_BOOL },
102 { "L2TP.RefusePAP", "refuse-pap", OPT_PPPD, NULL, OPT_BOOL },
103 { "L2TP.RefuseCHAP", "refuse-chap", OPT_PPPD, NULL, OPT_BOOL },
104 { "L2TP.RefuseMSCHAP", "refuse-mschap", OPT_PPPD, NULL, OPT_BOOL },
105 { "L2TP.RefuseMSCHAP2", "refuse-mschapv2", OPT_PPPD, NULL, OPT_BOOL },
106 { "L2TP.NoBSDComp", "nobsdcomp", OPT_PPPD, NULL, OPT_BOOL },
107 { "L2TP.NoPcomp", "nopcomp", OPT_PPPD, NULL, OPT_BOOL },
108 { "L2TP.UseAccomp", "accomp", OPT_PPPD, NULL, OPT_BOOL },
109 { "L2TP.NoDeflate", "nodeflatey", OPT_PPPD, NULL, OPT_BOOL },
110 { "L2TP.ReqMPPE", "require-mppe", OPT_PPPD, NULL, OPT_BOOL },
111 { "L2TP.ReqMPPE40", "require-mppe-40", OPT_PPPD, NULL, OPT_BOOL },
112 { "L2TP.ReqMPPE128", "require-mppe-128", OPT_PPPD, NULL, OPT_BOOL },
113 { "L2TP.ReqMPPEStateful", "mppe-stateful", OPT_PPPD, NULL, OPT_BOOL },
114 { "L2TP.NoVJ", "no-vj-comp", OPT_PPPD, NULL, OPT_BOOL },
117 static DBusConnection *connection;
119 struct l2tp_private_data {
120 struct connman_task *task;
122 vpn_provider_connect_cb_t cb;
126 static DBusMessage *l2tp_get_sec(struct connman_task *task,
127 DBusMessage *msg, void *user_data)
129 const char *user, *passwd;
130 struct vpn_provider *provider = user_data;
132 if (dbus_message_get_no_reply(msg) == FALSE) {
135 user = vpn_provider_get_string(provider, "L2TP.User");
136 passwd = vpn_provider_get_string(provider, "L2TP.Password");
138 if (user == NULL || strlen(user) == 0 ||
139 passwd == NULL || strlen(passwd) == 0)
142 reply = dbus_message_new_method_return(msg);
146 dbus_message_append_args(reply, DBUS_TYPE_STRING, &user,
147 DBUS_TYPE_STRING, &passwd,
156 static int l2tp_notify(DBusMessage *msg, struct vpn_provider *provider)
158 DBusMessageIter iter, dict;
159 const char *reason, *key, *value;
160 char *addressv4 = NULL, *netmask = NULL, *gateway = NULL;
161 char *ifname = NULL, *nameservers = NULL;
162 struct connman_ipaddress *ipaddress = NULL;
164 dbus_message_iter_init(msg, &iter);
166 dbus_message_iter_get_basic(&iter, &reason);
167 dbus_message_iter_next(&iter);
170 connman_error("No provider found");
171 return VPN_STATE_FAILURE;
174 if (strcmp(reason, "auth failed") == 0)
175 return VPN_STATE_AUTH_FAILURE;
177 if (strcmp(reason, "connect"))
178 return VPN_STATE_DISCONNECT;
180 dbus_message_iter_recurse(&iter, &dict);
182 while (dbus_message_iter_get_arg_type(&dict) == DBUS_TYPE_DICT_ENTRY) {
183 DBusMessageIter entry;
185 dbus_message_iter_recurse(&dict, &entry);
186 dbus_message_iter_get_basic(&entry, &key);
187 dbus_message_iter_next(&entry);
188 dbus_message_iter_get_basic(&entry, &value);
190 DBG("%s = %s", key, value);
192 if (!strcmp(key, "INTERNAL_IP4_ADDRESS")) {
193 vpn_provider_set_string(provider, "Address", value);
194 addressv4 = g_strdup(value);
197 if (!strcmp(key, "INTERNAL_IP4_NETMASK")) {
198 vpn_provider_set_string(provider, "Netmask", value);
199 netmask = g_strdup(value);
202 if (!strcmp(key, "INTERNAL_IP4_DNS")) {
203 vpn_provider_set_string(provider, "DNS", value);
204 nameservers = g_strdup(value);
207 if (!strcmp(key, "INTERNAL_IFNAME"))
208 ifname = g_strdup(value);
210 dbus_message_iter_next(&dict);
213 if (vpn_set_ifname(provider, ifname) < 0) {
218 return VPN_STATE_FAILURE;
221 if (addressv4 != NULL)
222 ipaddress = connman_ipaddress_alloc(AF_INET);
226 if (ipaddress == NULL) {
227 connman_error("No IP address for provider");
231 return VPN_STATE_FAILURE;
234 value = vpn_provider_get_string(provider, "HostIP");
236 vpn_provider_set_string(provider, "Gateway", value);
237 gateway = g_strdup(value);
240 if (addressv4 != NULL)
241 connman_ipaddress_set_ipv4(ipaddress, addressv4, netmask,
244 vpn_provider_set_ipaddress(provider, ipaddress);
245 vpn_provider_set_nameservers(provider, nameservers);
251 connman_ipaddress_free(ipaddress);
253 return VPN_STATE_CONNECT;
256 static int l2tp_save(struct vpn_provider *provider, GKeyFile *keyfile)
261 for (i = 0; i < (int)ARRAY_SIZE(pppd_options); i++) {
262 if (strncmp(pppd_options[i].cm_opt, "L2TP.", 5) == 0) {
263 option = vpn_provider_get_string(provider,
264 pppd_options[i].cm_opt);
268 g_key_file_set_string(keyfile,
269 vpn_provider_get_save_group(provider),
270 pppd_options[i].cm_opt, option);
277 static ssize_t full_write(int fd, const void *buf, size_t len)
282 byte_write = write(fd, buf, len);
283 if (byte_write < 0) {
284 connman_error("failed to write config to l2tp: %s\n",
295 static ssize_t l2tp_write_bool_option(int fd,
296 const char *key, const char *value)
301 if (key != NULL && value != NULL) {
302 if (strcasecmp(value, "yes") == 0 ||
303 strcasecmp(value, "true") == 0 ||
304 strcmp(value, "1") == 0) {
305 buf = g_strdup_printf("%s\n", key);
306 ret = full_write(fd, buf, strlen(buf));
315 static int l2tp_write_option(int fd, const char *key, const char *value)
322 buf = g_strdup_printf("%s %s\n", key, value);
324 buf = g_strdup_printf("%s\n", key);
326 ret = full_write(fd, buf, strlen(buf));
334 static int l2tp_write_section(int fd, const char *key, const char *value)
339 if (key != NULL && value != NULL) {
340 buf = g_strdup_printf("%s = %s\n", key, value);
341 ret = full_write(fd, buf, strlen(buf));
349 static int write_pppd_option(struct vpn_provider *provider, int fd)
354 l2tp_write_option(fd, "nodetach", NULL);
355 l2tp_write_option(fd, "lock", NULL);
356 l2tp_write_option(fd, "usepeerdns", NULL);
357 l2tp_write_option(fd, "noipdefault", NULL);
358 l2tp_write_option(fd, "noauth", NULL);
359 l2tp_write_option(fd, "nodefaultroute", NULL);
360 l2tp_write_option(fd, "ipparam", "l2tp_plugin");
362 for (i = 0; i < (int)ARRAY_SIZE(pppd_options); i++) {
363 if (pppd_options[i].sub != OPT_ALL &&
364 pppd_options[i].sub != OPT_PPPD)
367 opt_s = vpn_provider_get_string(provider,
368 pppd_options[i].cm_opt);
370 opt_s = pppd_options[i].vpn_default;
375 if (pppd_options[i].type == OPT_STRING)
376 l2tp_write_option(fd,
377 pppd_options[i].pppd_opt, opt_s);
378 else if (pppd_options[i].type == OPT_BOOL)
379 l2tp_write_bool_option(fd,
380 pppd_options[i].pppd_opt, opt_s);
383 l2tp_write_option(fd, "plugin",
384 SCRIPTDIR "/libppp-plugin.so");
390 static int l2tp_write_fields(struct vpn_provider *provider,
396 for (i = 0; i < (int)ARRAY_SIZE(pppd_options); i++) {
397 if (pppd_options[i].sub != sub)
400 opt_s = vpn_provider_get_string(provider,
401 pppd_options[i].cm_opt);
403 opt_s = pppd_options[i].vpn_default;
408 if (pppd_options[i].type == OPT_STRING)
409 l2tp_write_section(fd,
410 pppd_options[i].pppd_opt, opt_s);
411 else if (pppd_options[i].type == OPT_BOOL)
412 l2tp_write_bool_option(fd,
413 pppd_options[i].pppd_opt, opt_s);
419 static int l2tp_write_config(struct vpn_provider *provider,
420 const char *pppd_name, int fd)
424 l2tp_write_option(fd, "[global]", NULL);
425 l2tp_write_fields(provider, fd, OPT_L2G);
427 l2tp_write_option(fd, "[lac l2tp]", NULL);
429 option = vpn_provider_get_string(provider, "Host");
430 l2tp_write_option(fd, "lns =", option);
432 l2tp_write_fields(provider, fd, OPT_ALL);
433 l2tp_write_fields(provider, fd, OPT_L2);
435 l2tp_write_option(fd, "pppoptfile =", pppd_name);
440 static void l2tp_died(struct connman_task *task, int exit_code, void *user_data)
444 vpn_died(task, exit_code, user_data);
446 conf_file = g_strdup_printf("/var/run/connman/connman-xl2tpd.conf");
450 conf_file = g_strdup_printf("/var/run/connman/connman-ppp-option.conf");
455 struct request_input_reply {
456 struct vpn_provider *provider;
457 vpn_provider_password_cb_t callback;
461 static void request_input_reply(DBusMessage *reply, void *user_data)
463 struct request_input_reply *l2tp_reply = user_data;
464 const char *error = NULL;
465 char *username = NULL, *password = NULL;
467 DBusMessageIter iter, dict;
469 DBG("provider %p", l2tp_reply->provider);
471 if (dbus_message_get_type(reply) == DBUS_MESSAGE_TYPE_ERROR) {
472 error = dbus_message_get_error_name(reply);
476 if (vpn_agent_check_reply_has_dict(reply) == FALSE)
479 dbus_message_iter_init(reply, &iter);
480 dbus_message_iter_recurse(&iter, &dict);
481 while (dbus_message_iter_get_arg_type(&dict) == DBUS_TYPE_DICT_ENTRY) {
482 DBusMessageIter entry, value;
485 dbus_message_iter_recurse(&dict, &entry);
486 if (dbus_message_iter_get_arg_type(&entry) != DBUS_TYPE_STRING)
489 dbus_message_iter_get_basic(&entry, &key);
491 if (g_str_equal(key, "Username")) {
492 dbus_message_iter_next(&entry);
493 if (dbus_message_iter_get_arg_type(&entry)
494 != DBUS_TYPE_VARIANT)
496 dbus_message_iter_recurse(&entry, &value);
497 if (dbus_message_iter_get_arg_type(&value)
500 dbus_message_iter_get_basic(&value, &str);
501 username = g_strdup(str);
504 if (g_str_equal(key, "Password")) {
505 dbus_message_iter_next(&entry);
506 if (dbus_message_iter_get_arg_type(&entry)
507 != DBUS_TYPE_VARIANT)
509 dbus_message_iter_recurse(&entry, &value);
510 if (dbus_message_iter_get_arg_type(&value)
513 dbus_message_iter_get_basic(&value, &str);
514 password = g_strdup(str);
517 dbus_message_iter_next(&dict);
521 l2tp_reply->callback(l2tp_reply->provider, username, password, error,
522 l2tp_reply->user_data);
530 typedef void (* request_cb_t)(struct vpn_provider *provider,
531 const char *username, const char *password,
532 const char *error, void *user_data);
534 static int request_input(struct vpn_provider *provider,
535 request_cb_t callback, void *user_data)
537 DBusMessage *message;
538 const char *path, *agent_sender, *agent_path;
539 DBusMessageIter iter;
540 DBusMessageIter dict;
541 struct request_input_reply *l2tp_reply;
544 connman_agent_get_info(&agent_sender, &agent_path);
546 if (provider == NULL || agent_path == NULL || callback == NULL)
549 message = dbus_message_new_method_call(agent_sender, agent_path,
555 dbus_message_iter_init_append(message, &iter);
557 path = vpn_provider_get_path(provider);
558 dbus_message_iter_append_basic(&iter,
559 DBUS_TYPE_OBJECT_PATH, &path);
561 connman_dbus_dict_open(&iter, &dict);
563 vpn_agent_append_user_info(&dict, provider, "L2TP.User");
565 vpn_agent_append_host_and_name(&dict, provider);
567 connman_dbus_dict_close(&iter, &dict);
569 l2tp_reply = g_try_new0(struct request_input_reply, 1);
570 if (l2tp_reply == NULL) {
571 dbus_message_unref(message);
575 l2tp_reply->provider = provider;
576 l2tp_reply->callback = callback;
577 l2tp_reply->user_data = user_data;
579 err = connman_agent_queue_message(provider, message,
580 connman_timeout_input_request(),
581 request_input_reply, l2tp_reply);
582 if (err < 0 && err != -EBUSY) {
583 DBG("error %d sending agent request", err);
584 dbus_message_unref(message);
589 dbus_message_unref(message);
594 static int run_connect(struct vpn_provider *provider,
595 struct connman_task *task, const char *if_name,
596 vpn_provider_connect_cb_t cb, void *user_data,
597 const char *username, const char *password)
599 char *l2tp_name, *pppd_name;
600 int l2tp_fd, pppd_fd;
603 if (username == NULL || password == NULL) {
604 DBG("Cannot connect username %s password %p",
610 vpn_provider_set_string(provider, "L2TP.User", username);
611 vpn_provider_set_string(provider, "L2TP.Password", password);
613 DBG("username %s password %p", username, password);
615 l2tp_name = g_strdup_printf("/var/run/connman/connman-xl2tpd.conf");
617 l2tp_fd = open(l2tp_name, O_RDWR|O_CREAT|O_TRUNC, S_IRUSR|S_IWUSR);
620 connman_error("Error writing l2tp config");
625 pppd_name = g_strdup_printf("/var/run/connman/connman-ppp-option.conf");
627 pppd_fd = open(pppd_name, O_RDWR|O_CREAT|O_TRUNC, S_IRUSR|S_IWUSR);
629 connman_error("Error writing pppd config");
637 l2tp_write_config(provider, pppd_name, l2tp_fd);
639 write_pppd_option(provider, pppd_fd);
641 connman_task_add_argument(task, "-D", NULL);
642 connman_task_add_argument(task, "-c", l2tp_name);
647 err = connman_task_run(task, l2tp_died, provider,
650 connman_error("l2tp failed to start");
657 cb(provider, user_data, err);
662 static void free_private_data(struct l2tp_private_data *data)
664 g_free(data->if_name);
668 static void request_input_cb(struct vpn_provider *provider,
669 const char *username,
670 const char *password,
671 const char *error, void *user_data)
673 struct l2tp_private_data *data = user_data;
675 if (username == NULL || password == NULL)
676 DBG("Requesting username %s or password failed, error %s",
678 else if (error != NULL)
679 DBG("error %s", error);
681 run_connect(provider, data->task, data->if_name, data->cb,
682 data->user_data, username, password);
684 free_private_data(data);
687 static int l2tp_connect(struct vpn_provider *provider,
688 struct connman_task *task, const char *if_name,
689 vpn_provider_connect_cb_t cb, void *user_data)
691 const char *username, *password;
694 if (connman_task_set_notify(task, "getsec",
695 l2tp_get_sec, provider) != 0) {
700 username = vpn_provider_get_string(provider, "L2TP.User");
701 password = vpn_provider_get_string(provider, "L2TP.Password");
703 DBG("user %s password %p", username, password);
705 if (username == NULL || password == NULL) {
706 struct l2tp_private_data *data;
708 data = g_try_new0(struct l2tp_private_data, 1);
713 data->if_name = g_strdup(if_name);
715 data->user_data = user_data;
717 err = request_input(provider, request_input_cb, data);
718 if (err != -EINPROGRESS) {
719 free_private_data(data);
726 return run_connect(provider, task, if_name, cb, user_data,
731 cb(provider, user_data, err);
736 static int l2tp_error_code(int exit_code)
740 return CONNMAN_PROVIDER_ERROR_CONNECT_FAILED;
742 return CONNMAN_PROVIDER_ERROR_UNKNOWN;
746 static struct vpn_driver vpn_driver = {
747 .flags = VPN_FLAG_NO_TUN,
748 .notify = l2tp_notify,
749 .connect = l2tp_connect,
750 .error_code = l2tp_error_code,
754 static int l2tp_init(void)
756 connection = connman_dbus_get_connection();
758 return vpn_register("l2tp", &vpn_driver, L2TP);
761 static void l2tp_exit(void)
763 vpn_unregister("l2tp");
765 dbus_connection_unref(connection);
768 CONNMAN_PLUGIN_DEFINE(l2tp, "l2tp plugin", VERSION,
769 CONNMAN_PLUGIN_PRIORITY_DEFAULT, l2tp_init, l2tp_exit)