5 * Copyright (C) 2010,2013 BMW Car IT GmbH.
6 * Copyright (C) 2012-2013 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.TXBPS", "tx bps", OPT_L2, NULL, OPT_STRING },
80 { "L2TP.RXBPS", "rx bps", OPT_L2, NULL, OPT_STRING },
81 { "L2TP.LengthBit", "length bit", OPT_L2, NULL, OPT_STRING },
82 { "L2TP.Challenge", "challenge", OPT_L2, NULL, OPT_STRING },
83 { "L2TP.DefaultRoute", "defaultroute", OPT_L2, NULL, OPT_STRING },
84 { "L2TP.FlowBit", "flow bit", OPT_L2, NULL, OPT_STRING },
85 { "L2TP.TunnelRWS", "tunnel rws", OPT_L2, NULL, OPT_STRING },
86 { "L2TP.Exclusive", "exclusive", OPT_L2, NULL, OPT_STRING },
87 { "L2TP.Autodial", "autodial", OPT_L2, "yes", OPT_STRING },
88 { "L2TP.Redial", "redial", OPT_L2, "yes", OPT_STRING },
89 { "L2TP.RedialTimeout", "redial timeout", OPT_L2, "10", OPT_STRING },
90 { "L2TP.MaxRedials", "max redials", OPT_L2, NULL, OPT_STRING },
91 { "L2TP.RequirePAP", "require pap", OPT_L2, "no", OPT_STRING },
92 { "L2TP.RequireCHAP", "require chap", OPT_L2, "yes", OPT_STRING },
93 { "L2TP.ReqAuth", "require authentication", OPT_L2, "no", OPT_STRING },
94 { "L2TP.AccessControl", "access control", OPT_L2G, "yes", OPT_STRING },
95 { "L2TP.AuthFile", "auth file", OPT_L2G, NULL, OPT_STRING },
96 { "L2TP.ForceUserSpace", "force userspace", OPT_L2G, NULL, OPT_STRING },
97 { "L2TP.ListenAddr", "listen-addr", OPT_L2G, NULL, OPT_STRING },
98 { "L2TP.Rand Source", "rand source", OPT_L2G, NULL, OPT_STRING },
99 { "L2TP.IPsecSaref", "ipsec saref", OPT_L2G, NULL, OPT_STRING },
100 { "L2TP.Port", "port", OPT_L2G, NULL, OPT_STRING },
101 { "PPPD.EchoFailure", "lcp-echo-failure", OPT_PPPD, "0", OPT_STRING },
102 { "PPPD.EchoInterval", "lcp-echo-interval", OPT_PPPD, "0", OPT_STRING },
103 { "PPPD.Debug", "debug", OPT_PPPD, NULL, OPT_STRING },
104 { "PPPD.RefuseEAP", "refuse-eap", OPT_PPPD, NULL, OPT_BOOL },
105 { "PPPD.RefusePAP", "refuse-pap", OPT_PPPD, NULL, OPT_BOOL },
106 { "PPPD.RefuseCHAP", "refuse-chap", OPT_PPPD, NULL, OPT_BOOL },
107 { "PPPD.RefuseMSCHAP", "refuse-mschap", OPT_PPPD, NULL, OPT_BOOL },
108 { "PPPD.RefuseMSCHAP2", "refuse-mschapv2", OPT_PPPD, NULL, OPT_BOOL },
109 { "PPPD.NoBSDComp", "nobsdcomp", OPT_PPPD, NULL, OPT_BOOL },
110 { "PPPD.NoPcomp", "nopcomp", OPT_PPPD, NULL, OPT_BOOL },
111 { "PPPD.UseAccomp", "noaccomp", OPT_PPPD, NULL, OPT_BOOL },
112 { "PPPD.NoDeflate", "nodeflate", OPT_PPPD, NULL, OPT_BOOL },
113 { "PPPD.ReqMPPE", "require-mppe", OPT_PPPD, NULL, OPT_BOOL },
114 { "PPPD.ReqMPPE40", "require-mppe-40", OPT_PPPD, NULL, OPT_BOOL },
115 { "PPPD.ReqMPPE128", "require-mppe-128", OPT_PPPD, NULL, OPT_BOOL },
116 { "PPPD.ReqMPPEStateful", "mppe-stateful", OPT_PPPD, NULL, OPT_BOOL },
117 { "PPPD.NoVJ", "novj", OPT_PPPD, NULL, OPT_BOOL },
120 static DBusConnection *connection;
122 struct l2tp_private_data {
123 struct connman_task *task;
125 vpn_provider_connect_cb_t cb;
129 static DBusMessage *l2tp_get_sec(struct connman_task *task,
130 DBusMessage *msg, void *user_data)
132 const char *user, *passwd;
133 struct vpn_provider *provider = user_data;
135 if (!dbus_message_get_no_reply(msg)) {
138 user = vpn_provider_get_string(provider, "L2TP.User");
139 passwd = vpn_provider_get_string(provider, "L2TP.Password");
141 if (!user || strlen(user) == 0 ||
142 !passwd || strlen(passwd) == 0)
145 reply = dbus_message_new_method_return(msg);
149 dbus_message_append_args(reply, DBUS_TYPE_STRING, &user,
150 DBUS_TYPE_STRING, &passwd,
159 static int l2tp_notify(DBusMessage *msg, struct vpn_provider *provider)
161 DBusMessageIter iter, dict;
162 const char *reason, *key, *value;
163 char *addressv4 = NULL, *netmask = NULL, *gateway = NULL;
164 char *ifname = NULL, *nameservers = NULL;
165 struct connman_ipaddress *ipaddress = NULL;
167 dbus_message_iter_init(msg, &iter);
169 dbus_message_iter_get_basic(&iter, &reason);
170 dbus_message_iter_next(&iter);
173 connman_error("No provider found");
174 return VPN_STATE_FAILURE;
177 if (strcmp(reason, "auth failed") == 0) {
178 DBG("authentication failure");
180 vpn_provider_set_string(provider, "L2TP.User", NULL);
181 vpn_provider_set_string(provider, "L2TP.Password", NULL);
183 return VPN_STATE_AUTH_FAILURE;
186 if (strcmp(reason, "connect"))
187 return VPN_STATE_DISCONNECT;
189 dbus_message_iter_recurse(&iter, &dict);
191 while (dbus_message_iter_get_arg_type(&dict) == DBUS_TYPE_DICT_ENTRY) {
192 DBusMessageIter entry;
194 dbus_message_iter_recurse(&dict, &entry);
195 dbus_message_iter_get_basic(&entry, &key);
196 dbus_message_iter_next(&entry);
197 dbus_message_iter_get_basic(&entry, &value);
199 DBG("%s = %s", key, value);
201 if (!strcmp(key, "INTERNAL_IP4_ADDRESS"))
202 addressv4 = g_strdup(value);
204 if (!strcmp(key, "INTERNAL_IP4_NETMASK"))
205 netmask = g_strdup(value);
207 if (!strcmp(key, "INTERNAL_IP4_DNS"))
208 nameservers = g_strdup(value);
210 if (!strcmp(key, "INTERNAL_IFNAME"))
211 ifname = g_strdup(value);
213 dbus_message_iter_next(&dict);
216 if (vpn_set_ifname(provider, ifname) < 0) {
221 return VPN_STATE_FAILURE;
225 ipaddress = connman_ipaddress_alloc(AF_INET);
230 connman_error("No IP address for provider");
234 return VPN_STATE_FAILURE;
237 value = vpn_provider_get_string(provider, "HostIP");
239 vpn_provider_set_string(provider, "Gateway", value);
240 gateway = g_strdup(value);
244 connman_ipaddress_set_ipv4(ipaddress, addressv4, netmask,
247 vpn_provider_set_ipaddress(provider, ipaddress);
248 vpn_provider_set_nameservers(provider, nameservers);
254 connman_ipaddress_free(ipaddress);
256 return VPN_STATE_CONNECT;
259 static int l2tp_save(struct vpn_provider *provider, GKeyFile *keyfile)
262 bool l2tp_option, pppd_option;
265 for (i = 0; i < (int)ARRAY_SIZE(pppd_options); i++) {
266 l2tp_option = pppd_option = false;
268 if (strncmp(pppd_options[i].cm_opt, "L2TP.", 5) == 0)
271 if (strncmp(pppd_options[i].cm_opt, "PPPD.", 5) == 0)
274 if (l2tp_option || pppd_option) {
275 option = vpn_provider_get_string(provider,
276 pppd_options[i].cm_opt);
279 * Check if the option prefix is L2TP as the
280 * PPPD options were using L2TP prefix earlier.
287 l2tp_str = g_strdup_printf("L2TP.%s",
288 &pppd_options[i].cm_opt[5]);
289 option = vpn_provider_get_string(provider,
297 g_key_file_set_string(keyfile,
298 vpn_provider_get_save_group(provider),
299 pppd_options[i].cm_opt, option);
306 static ssize_t full_write(int fd, const void *buf, size_t len)
311 byte_write = write(fd, buf, len);
312 if (byte_write < 0) {
313 connman_error("failed to write config to l2tp: %s\n",
324 static ssize_t l2tp_write_bool_option(int fd,
325 const char *key, const char *value)
331 if (strcasecmp(value, "yes") == 0 ||
332 strcasecmp(value, "true") == 0 ||
333 strcmp(value, "1") == 0) {
334 buf = g_strdup_printf("%s\n", key);
335 ret = full_write(fd, buf, strlen(buf));
344 static int l2tp_write_option(int fd, const char *key, const char *value)
351 buf = g_strdup_printf("%s %s\n", key, value);
353 buf = g_strdup_printf("%s\n", key);
355 ret = full_write(fd, buf, strlen(buf));
363 static int l2tp_write_section(int fd, const char *key, const char *value)
369 buf = g_strdup_printf("%s = %s\n", key, value);
370 ret = full_write(fd, buf, strlen(buf));
378 static int write_pppd_option(struct vpn_provider *provider, int fd)
383 l2tp_write_option(fd, "nodetach", NULL);
384 l2tp_write_option(fd, "lock", NULL);
385 l2tp_write_option(fd, "logfd", "2");
386 l2tp_write_option(fd, "usepeerdns", NULL);
387 l2tp_write_option(fd, "noipdefault", NULL);
388 l2tp_write_option(fd, "noauth", NULL);
389 l2tp_write_option(fd, "nodefaultroute", NULL);
390 l2tp_write_option(fd, "ipparam", "l2tp_plugin");
392 for (i = 0; i < (int)ARRAY_SIZE(pppd_options); i++) {
393 if (pppd_options[i].sub != OPT_ALL &&
394 pppd_options[i].sub != OPT_PPPD)
397 opt_s = vpn_provider_get_string(provider,
398 pppd_options[i].cm_opt);
400 opt_s = pppd_options[i].vpn_default;
405 if (pppd_options[i].type == OPT_STRING)
406 l2tp_write_option(fd,
407 pppd_options[i].pppd_opt, opt_s);
408 else if (pppd_options[i].type == OPT_BOOL)
409 l2tp_write_bool_option(fd,
410 pppd_options[i].pppd_opt, opt_s);
413 l2tp_write_option(fd, "plugin",
414 SCRIPTDIR "/libppp-plugin.so");
420 static int l2tp_write_fields(struct vpn_provider *provider,
426 for (i = 0; i < (int)ARRAY_SIZE(pppd_options); i++) {
427 if (pppd_options[i].sub != sub)
430 opt_s = vpn_provider_get_string(provider,
431 pppd_options[i].cm_opt);
433 opt_s = pppd_options[i].vpn_default;
438 if (pppd_options[i].type == OPT_STRING)
439 l2tp_write_section(fd,
440 pppd_options[i].pppd_opt, opt_s);
441 else if (pppd_options[i].type == OPT_BOOL)
442 l2tp_write_bool_option(fd,
443 pppd_options[i].pppd_opt, opt_s);
449 static int l2tp_write_config(struct vpn_provider *provider,
450 const char *pppd_name, int fd)
454 l2tp_write_option(fd, "[global]", NULL);
455 l2tp_write_fields(provider, fd, OPT_L2G);
457 l2tp_write_option(fd, "[lac l2tp]", NULL);
459 option = vpn_provider_get_string(provider, "Host");
460 l2tp_write_option(fd, "lns =", option);
462 l2tp_write_fields(provider, fd, OPT_ALL);
463 l2tp_write_fields(provider, fd, OPT_L2);
465 l2tp_write_option(fd, "pppoptfile =", pppd_name);
470 static void l2tp_died(struct connman_task *task, int exit_code, void *user_data)
474 vpn_died(task, exit_code, user_data);
476 conf_file = g_strdup_printf(VPN_STATEDIR "/connman-xl2tpd.conf");
480 conf_file = g_strdup_printf(VPN_STATEDIR "/connman-ppp-option.conf");
485 struct request_input_reply {
486 struct vpn_provider *provider;
487 vpn_provider_password_cb_t callback;
491 static void request_input_reply(DBusMessage *reply, void *user_data)
493 struct request_input_reply *l2tp_reply = user_data;
494 const char *error = NULL;
495 char *username = NULL, *password = NULL;
497 DBusMessageIter iter, dict;
499 DBG("provider %p", l2tp_reply->provider);
501 if (!reply || dbus_message_get_type(reply) == DBUS_MESSAGE_TYPE_ERROR) {
503 error = dbus_message_get_error_name(reply);
507 if (!vpn_agent_check_reply_has_dict(reply))
510 dbus_message_iter_init(reply, &iter);
511 dbus_message_iter_recurse(&iter, &dict);
512 while (dbus_message_iter_get_arg_type(&dict) == DBUS_TYPE_DICT_ENTRY) {
513 DBusMessageIter entry, value;
516 dbus_message_iter_recurse(&dict, &entry);
517 if (dbus_message_iter_get_arg_type(&entry) != DBUS_TYPE_STRING)
520 dbus_message_iter_get_basic(&entry, &key);
522 if (g_str_equal(key, "Username")) {
523 dbus_message_iter_next(&entry);
524 if (dbus_message_iter_get_arg_type(&entry)
525 != DBUS_TYPE_VARIANT)
527 dbus_message_iter_recurse(&entry, &value);
528 if (dbus_message_iter_get_arg_type(&value)
531 dbus_message_iter_get_basic(&value, &str);
532 username = g_strdup(str);
535 if (g_str_equal(key, "Password")) {
536 dbus_message_iter_next(&entry);
537 if (dbus_message_iter_get_arg_type(&entry)
538 != DBUS_TYPE_VARIANT)
540 dbus_message_iter_recurse(&entry, &value);
541 if (dbus_message_iter_get_arg_type(&value)
544 dbus_message_iter_get_basic(&value, &str);
545 password = g_strdup(str);
548 dbus_message_iter_next(&dict);
552 l2tp_reply->callback(l2tp_reply->provider, username, password, error,
553 l2tp_reply->user_data);
561 typedef void (* request_cb_t)(struct vpn_provider *provider,
562 const char *username, const char *password,
563 const char *error, void *user_data);
565 static int request_input(struct vpn_provider *provider,
566 request_cb_t callback, const char *dbus_sender,
569 DBusMessage *message;
570 const char *path, *agent_sender, *agent_path;
571 DBusMessageIter iter;
572 DBusMessageIter dict;
573 struct request_input_reply *l2tp_reply;
577 agent = connman_agent_get_info(dbus_sender, &agent_sender,
579 if (!provider || !agent || !agent_path || !callback)
582 message = dbus_message_new_method_call(agent_sender, agent_path,
588 dbus_message_iter_init_append(message, &iter);
590 path = vpn_provider_get_path(provider);
591 dbus_message_iter_append_basic(&iter,
592 DBUS_TYPE_OBJECT_PATH, &path);
594 connman_dbus_dict_open(&iter, &dict);
596 vpn_agent_append_user_info(&dict, provider, "L2TP.User");
598 vpn_agent_append_host_and_name(&dict, provider);
600 connman_dbus_dict_close(&iter, &dict);
602 l2tp_reply = g_try_new0(struct request_input_reply, 1);
604 dbus_message_unref(message);
608 l2tp_reply->provider = provider;
609 l2tp_reply->callback = callback;
610 l2tp_reply->user_data = user_data;
612 err = connman_agent_queue_message(provider, message,
613 connman_timeout_input_request(),
614 request_input_reply, l2tp_reply, agent);
615 if (err < 0 && err != -EBUSY) {
616 DBG("error %d sending agent request", err);
617 dbus_message_unref(message);
622 dbus_message_unref(message);
627 static int run_connect(struct vpn_provider *provider,
628 struct connman_task *task, const char *if_name,
629 vpn_provider_connect_cb_t cb, void *user_data,
630 const char *username, const char *password)
632 char *l2tp_name, *pppd_name;
633 int l2tp_fd, pppd_fd;
636 if (!username || !password) {
637 DBG("Cannot connect username %s password %p",
643 DBG("username %s password %p", username, password);
645 l2tp_name = g_strdup_printf(VPN_STATEDIR "/connman-xl2tpd.conf");
647 l2tp_fd = open(l2tp_name, O_RDWR|O_CREAT|O_TRUNC, S_IRUSR|S_IWUSR);
650 connman_error("Error writing l2tp config");
655 pppd_name = g_strdup_printf(VPN_STATEDIR "/connman-ppp-option.conf");
657 pppd_fd = open(pppd_name, O_RDWR|O_CREAT|O_TRUNC, S_IRUSR|S_IWUSR);
659 connman_error("Error writing pppd config");
667 l2tp_write_config(provider, pppd_name, l2tp_fd);
669 write_pppd_option(provider, pppd_fd);
671 connman_task_add_argument(task, "-D", NULL);
672 connman_task_add_argument(task, "-c", l2tp_name);
679 err = connman_task_run(task, l2tp_died, provider,
682 connman_error("l2tp failed to start");
689 cb(provider, user_data, err);
694 static void free_private_data(struct l2tp_private_data *data)
696 g_free(data->if_name);
700 static void request_input_cb(struct vpn_provider *provider,
701 const char *username,
702 const char *password,
703 const char *error, void *user_data)
705 struct l2tp_private_data *data = user_data;
707 if (!username || !password)
708 DBG("Requesting username %s or password failed, error %s",
711 DBG("error %s", error);
713 vpn_provider_set_string(provider, "L2TP.User", username);
714 vpn_provider_set_string_hide_value(provider, "L2TP.Password",
717 run_connect(provider, data->task, data->if_name, data->cb,
718 data->user_data, username, password);
720 free_private_data(data);
723 static int l2tp_connect(struct vpn_provider *provider,
724 struct connman_task *task, const char *if_name,
725 vpn_provider_connect_cb_t cb, const char *dbus_sender,
728 const char *username, *password;
731 if (connman_task_set_notify(task, "getsec",
732 l2tp_get_sec, provider) != 0) {
737 username = vpn_provider_get_string(provider, "L2TP.User");
738 password = vpn_provider_get_string(provider, "L2TP.Password");
740 DBG("user %s password %p", username, password);
742 if (!username || !password) {
743 struct l2tp_private_data *data;
745 data = g_try_new0(struct l2tp_private_data, 1);
750 data->if_name = g_strdup(if_name);
752 data->user_data = user_data;
754 err = request_input(provider, request_input_cb, dbus_sender,
756 if (err != -EINPROGRESS) {
757 free_private_data(data);
764 return run_connect(provider, task, if_name, cb, user_data,
769 cb(provider, user_data, err);
774 static int l2tp_error_code(struct vpn_provider *provider, int exit_code)
778 return CONNMAN_PROVIDER_ERROR_CONNECT_FAILED;
780 return CONNMAN_PROVIDER_ERROR_UNKNOWN;
784 static void l2tp_disconnect(struct vpn_provider *provider)
786 vpn_provider_set_string(provider, "L2TP.Password", NULL);
789 static struct vpn_driver vpn_driver = {
790 .flags = VPN_FLAG_NO_TUN,
791 .notify = l2tp_notify,
792 .connect = l2tp_connect,
793 .error_code = l2tp_error_code,
795 .disconnect = l2tp_disconnect,
798 static int l2tp_init(void)
800 connection = connman_dbus_get_connection();
802 return vpn_register("l2tp", &vpn_driver, L2TP);
805 static void l2tp_exit(void)
807 vpn_unregister("l2tp");
809 dbus_connection_unref(connection);
812 CONNMAN_PLUGIN_DEFINE(l2tp, "l2tp plugin", VERSION,
813 CONNMAN_PLUGIN_PRIORITY_DEFAULT, l2tp_init, l2tp_exit)