--- /dev/null
+/*
+ *
+ * Connection Manager
+ *
+ * Copyright (C) 2010 BMW Car IT GmbH. All rights reserved.
+ * Copyright (C) 2011 Intel Corporation. All rights reserved.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
+ *
+ */
+
+#ifdef HAVE_CONFIG_H
+#include <config.h>
+#endif
+
+#include <string.h>
+#include <errno.h>
+#include <unistd.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <fcntl.h>
+
+#include <stdio.h>
+#include <net/if.h>
+
+#include <glib.h>
+
+#define CONNMAN_API_SUBJECT_TO_CHANGE
+#include <connman/plugin.h>
+#include <connman/provider.h>
+#include <connman/log.h>
+#include <connman/task.h>
+#include <connman/dbus.h>
+#include <connman/inet.h>
+
+#include "vpn.h"
+
+#define ARRAY_SIZE(a) (sizeof(a)/sizeof(a[0]))
+
+enum {
+ OPT_STRING = 1,
+ OPT_BOOL = 2,
+};
+
+enum {
+ OPT_ALL = 1,
+ OPT_L2G = 2,
+ OPT_L2 = 3,
+ OPT_PPPD = 4,
+};
+
+struct {
+ const char *cm_opt;
+ const char *pppd_opt;
+ int sub;
+ const char *vpn_default;
+ int type;
+} pppd_options[] = {
+ { "L2TP.User", "name", OPT_ALL, NULL, OPT_STRING },
+ { "L2TP.BPS", "bps", OPT_L2, NULL, OPT_STRING },
+ { "L2TP.LengthBit", "length bit", OPT_L2, NULL, OPT_STRING },
+ { "L2TP.Challenge", "challenge", OPT_L2, NULL, OPT_STRING },
+ { "L2TP.DefaultRoute", "defaultroute", OPT_L2, NULL, OPT_STRING },
+ { "L2TP.FlowBit", "flow bit", OPT_L2, NULL, OPT_STRING },
+ { "L2TP.TunnelRWS", "tunnel rws", OPT_L2, NULL, OPT_STRING },
+ { "L2TP.Exclusive", "exclusive", OPT_L2, NULL, OPT_STRING },
+ { "L2TP.Autodial", "autodial", OPT_L2, "yes", OPT_STRING },
+ { "L2TP.Redial", "redial", OPT_L2, "yes", OPT_STRING },
+ { "L2TP.RedialTimeout", "redial timeout", OPT_L2, "10", OPT_STRING },
+ { "L2TP.MaxRedials", "max redials", OPT_L2, NULL, OPT_STRING },
+ { "L2TP.RequirePAP", "require pap", OPT_L2, "no", OPT_STRING },
+ { "L2TP.RequireCHAP", "require chap", OPT_L2, "yes", OPT_STRING },
+ { "L2TP.ReqAuth", "require authentication", OPT_L2, "no", OPT_STRING },
+ { "L2TP.AccessControl", "access control", OPT_L2G, "yes", OPT_STRING },
+ { "L2TP.AuthFile", "auth file", OPT_L2G, NULL, OPT_STRING },
+ { "L2TP.ForceUserSpace", "force userspace", OPT_L2G, NULL, OPT_STRING },
+ { "L2TP.ListenAddr", "listen-addr", OPT_L2G, NULL, OPT_STRING },
+ { "L2TP.Rand Source", "rand source", OPT_L2G, NULL, OPT_STRING },
+ { "L2TP.IPsecSaref", "ipsec saref", OPT_L2G, NULL, OPT_STRING },
+ { "L2TP.Port", "port", OPT_L2G, NULL, OPT_STRING },
+ { "L2TP.EchoFailure", "lcp-echo-failure", OPT_PPPD, "0", OPT_STRING },
+ { "L2TP.EchoInterval", "lcp-echo-interval", OPT_PPPD, "0", OPT_STRING },
+ { "L2TP.Debug", "debug", OPT_PPPD, NULL, OPT_STRING },
+ { "L2TP.RefuseEAP", "refuse-eap", OPT_PPPD, NULL, OPT_BOOL },
+ { "L2TP.RefusePAP", "refuse-pap", OPT_PPPD, NULL, OPT_BOOL },
+ { "L2TP.RefuseCHAP", "refuse-chap", OPT_PPPD, NULL, OPT_BOOL },
+ { "L2TP.RefuseMSCHAP", "refuse-mschap", OPT_PPPD, NULL, OPT_BOOL },
+ { "L2TP.RefuseMSCHAP2", "refuse-mschapv2", OPT_PPPD, NULL, OPT_BOOL },
+ { "L2TP.NoBSDComp", "nobsdcomp", OPT_PPPD, NULL, OPT_BOOL },
+ { "L2TP.NoPcomp", "nopcomp", OPT_PPPD, NULL, OPT_BOOL },
+ { "L2TP.UseAccomp", "accomp", OPT_PPPD, NULL, OPT_BOOL },
+ { "L2TP.NoDeflate", "nodeflatey", OPT_PPPD, NULL, OPT_BOOL },
+ { "L2TP.ReqMPPE", "require-mppe", OPT_PPPD, NULL, OPT_BOOL },
+ { "L2TP.ReqMPPE40", "require-mppe-40", OPT_PPPD, NULL, OPT_BOOL },
+ { "L2TP.ReqMPPE128", "require-mppe-128", OPT_PPPD, NULL, OPT_BOOL },
+ { "L2TP.ReqMPPEStateful", "mppe-stateful", OPT_PPPD, NULL, OPT_BOOL },
+ { "L2TP.NoVJ", "no-vj-comp", OPT_PPPD, NULL, OPT_BOOL },
+};
+
+static DBusConnection *connection;
+
+static DBusMessage *l2tp_get_sec(struct connman_task *task,
+ DBusMessage *msg, void *user_data)
+{
+ const char *user, *passwd;
+ struct connman_provider *provider = user_data;
+
+ if (dbus_message_get_no_reply(msg) == FALSE) {
+ DBusMessage *reply;
+
+ user = connman_provider_get_string(provider, "L2TP.User");
+ passwd = connman_provider_get_string(provider, "L2TP.Password");
+
+ if (user == NULL || strlen(user) == 0 ||
+ passwd == NULL || strlen(passwd) == 0)
+ return NULL;
+
+ reply = dbus_message_new_method_return(msg);
+ if (reply == NULL)
+ return NULL;
+
+ dbus_message_append_args(reply, DBUS_TYPE_STRING, &user,
+ DBUS_TYPE_STRING, &passwd,
+ DBUS_TYPE_INVALID);
+
+ return reply;
+ }
+
+ return NULL;
+}
+
+static int l2tp_notify(DBusMessage *msg, struct connman_provider *provider)
+{
+ DBusMessageIter iter, dict;
+ const char *reason, *key, *value;
+ char *addressv4 = NULL, *netmask = NULL, *gateway = NULL;
+ char *ifname = NULL, *nameservers = NULL;
+ struct connman_ipaddress *ipaddress = NULL;
+
+ dbus_message_iter_init(msg, &iter);
+
+ dbus_message_iter_get_basic(&iter, &reason);
+ dbus_message_iter_next(&iter);
+
+ if (!provider) {
+ connman_error("No provider found");
+ return VPN_STATE_FAILURE;
+ }
+
+ if (strcmp(reason, "connect"))
+ return VPN_STATE_DISCONNECT;
+
+ dbus_message_iter_recurse(&iter, &dict);
+
+ while (dbus_message_iter_get_arg_type(&dict) == DBUS_TYPE_DICT_ENTRY) {
+ DBusMessageIter entry;
+
+ dbus_message_iter_recurse(&dict, &entry);
+ dbus_message_iter_get_basic(&entry, &key);
+ dbus_message_iter_next(&entry);
+ dbus_message_iter_get_basic(&entry, &value);
+
+ DBG("%s = %s", key, value);
+
+ if (!strcmp(key, "INTERNAL_IP4_ADDRESS")) {
+ connman_provider_set_string(provider, "Address", value);
+ addressv4 = g_strdup(value);
+ }
+
+ if (!strcmp(key, "INTERNAL_IP4_NETMASK")) {
+ connman_provider_set_string(provider, "Netmask", value);
+ netmask = g_strdup(value);
+ }
+
+ if (!strcmp(key, "INTERNAL_IP4_DNS")) {
+ connman_provider_set_string(provider, "DNS", value);
+ nameservers = g_strdup(value);
+ }
+
+ if (!strcmp(key, "INTERNAL_IFNAME"))
+ ifname = g_strdup(value);
+
+ dbus_message_iter_next(&dict);
+ }
+
+ if (vpn_set_ifname(provider, ifname) < 0) {
+ g_free(ifname);
+ g_free(addressv4);
+ g_free(netmask);
+ g_free(nameservers);
+ return VPN_STATE_FAILURE;
+ }
+
+ if (addressv4 != NULL)
+ ipaddress = connman_ipaddress_alloc(AF_INET);
+
+ g_free(ifname);
+
+ if (ipaddress == NULL) {
+ connman_error("No IP address for provider");
+ g_free(addressv4);
+ g_free(netmask);
+ g_free(nameservers);
+ return VPN_STATE_FAILURE;
+ }
+
+ value = connman_provider_get_string(provider, "Host");
+ if (value != NULL) {
+ connman_provider_set_string(provider, "Gateway", value);
+ gateway = g_strdup(value);
+ }
+
+ if (addressv4 != NULL)
+ connman_ipaddress_set_ipv4(ipaddress, addressv4, netmask,
+ gateway);
+
+ connman_provider_set_ipaddress(provider, ipaddress);
+ connman_provider_set_nameservers(provider, nameservers);
+
+ g_free(addressv4);
+ g_free(netmask);
+ g_free(gateway);
+ g_free(nameservers);
+ connman_ipaddress_free(ipaddress);
+
+ return VPN_STATE_CONNECT;
+}
+
+static ssize_t full_write(int fd, const void *buf, size_t len)
+{
+ ssize_t byte_write;
+
+ while (len) {
+ byte_write = write(fd, buf, len);
+ if (byte_write < 0) {
+ connman_error("failed to write config to l2tp: %s\n",
+ strerror(errno));
+ return byte_write;
+ }
+ len -= byte_write;
+ buf += byte_write;
+ }
+
+ return 0;
+}
+
+static ssize_t l2tp_write_bool_option(int fd,
+ const char *key, const char *value)
+{
+ gchar *buf;
+ ssize_t ret = 0;
+
+ if (key != NULL && value != NULL) {
+ if (strcmp(value, "yes") == 0) {
+ buf = g_strdup_printf("%s\n", key);
+ ret = full_write(fd, buf, strlen(buf));
+
+ g_free(buf);
+ }
+ }
+
+ return ret;
+}
+
+static int l2tp_write_option(int fd, const char *key, const char *value)
+{
+ gchar *buf;
+ ssize_t ret = 0;
+
+ if (key != NULL) {
+ if (value != NULL)
+ buf = g_strdup_printf("%s %s\n", key, value);
+ else
+ buf = g_strdup_printf("%s\n", key);
+
+ ret = full_write(fd, buf, strlen(buf));
+
+ g_free(buf);
+ }
+
+ return ret;
+}
+
+static int l2tp_write_section(int fd, const char *key, const char *value)
+{
+ gchar *buf;
+ ssize_t ret = 0;
+
+ if (key != NULL && value != NULL) {
+ buf = g_strdup_printf("%s = %s\n", key, value);
+ ret = full_write(fd, buf, strlen(buf));
+
+ g_free(buf);
+ }
+
+ return ret;
+}
+
+static int write_pppd_option(struct connman_provider *provider, int fd)
+{
+ int i;
+ const char *opt_s;
+
+ l2tp_write_option(fd, "nodetach", NULL);
+ l2tp_write_option(fd, "lock", NULL);
+ l2tp_write_option(fd, "usepeerdns", NULL);
+ l2tp_write_option(fd, "noipdefault", NULL);
+ l2tp_write_option(fd, "noauth", NULL);
+ l2tp_write_option(fd, "nodefaultroute", NULL);
+ l2tp_write_option(fd, "ipparam", "l2tp_plugin");
+
+ for (i = 0; i < (int)ARRAY_SIZE(pppd_options); i++) {
+ if (pppd_options[i].sub != OPT_ALL &&
+ pppd_options[i].sub != OPT_PPPD)
+ continue;
+
+ opt_s = connman_provider_get_string(provider,
+ pppd_options[i].cm_opt);
+ if (!opt_s)
+ opt_s = pppd_options[i].vpn_default;
+
+ if (!opt_s)
+ continue;
+
+ if (pppd_options[i].type == OPT_STRING)
+ l2tp_write_option(fd,
+ pppd_options[i].pppd_opt, opt_s);
+ else if (pppd_options[i].type == OPT_BOOL)
+ l2tp_write_bool_option(fd,
+ pppd_options[i].pppd_opt, opt_s);
+ }
+
+ l2tp_write_option(fd, "plugin",
+ SCRIPTDIR "/libppp-plugin.so");
+
+ return 0;
+}
+
+
+static int l2tp_write_fields(struct connman_provider *provider,
+ int fd, int sub)
+{
+ int i;
+ const char *opt_s;
+
+ for (i = 0; i < (int)ARRAY_SIZE(pppd_options); i++) {
+ if (pppd_options[i].sub != sub)
+ continue;
+
+ opt_s = connman_provider_get_string(provider,
+ pppd_options[i].cm_opt);
+ if (!opt_s)
+ opt_s = pppd_options[i].vpn_default;
+
+ if (!opt_s)
+ continue;
+
+ if (pppd_options[i].type == OPT_STRING)
+ l2tp_write_section(fd,
+ pppd_options[i].pppd_opt, opt_s);
+ else if (pppd_options[i].type == OPT_BOOL)
+ l2tp_write_bool_option(fd,
+ pppd_options[i].pppd_opt, opt_s);
+ }
+
+ return 0;
+}
+
+static int l2tp_write_config(struct connman_provider *provider,
+ const char *pppd_name, int fd)
+{
+ const char *option;
+
+ l2tp_write_option(fd, "[global]", NULL);
+ l2tp_write_fields(provider, fd, OPT_L2G);
+
+ l2tp_write_option(fd, "[lac l2tp]", NULL);
+
+ option = connman_provider_get_string(provider, "Host");
+ l2tp_write_option(fd, "lns =", option);
+
+ l2tp_write_fields(provider, fd, OPT_ALL);
+ l2tp_write_fields(provider, fd, OPT_L2);
+
+ l2tp_write_option(fd, "pppoptfile =", pppd_name);
+
+ return 0;
+}
+
+static void l2tp_died(struct connman_task *task, int exit_code, void *user_data)
+{
+ char *conf_file;
+
+ vpn_died(task, exit_code, user_data);
+
+ conf_file = g_strdup_printf("/var/run/connman/connman-xl2tpd.conf");
+ unlink(conf_file);
+ g_free(conf_file);
+
+ conf_file = g_strdup_printf("/var/run/connman/connman-ppp-option.conf");
+ unlink(conf_file);
+ g_free(conf_file);
+}
+
+static int l2tp_connect(struct connman_provider *provider,
+ struct connman_task *task, const char *if_name)
+{
+ const char *host;
+ char *l2tp_name, *pppd_name;
+ int l2tp_fd, pppd_fd;
+ int err;
+
+ if (connman_task_set_notify(task, "getsec",
+ l2tp_get_sec, provider))
+ return -ENOMEM;
+
+ host = connman_provider_get_string(provider, "Host");
+ if (host == NULL) {
+ connman_error("Host not set; cannot enable VPN");
+ return -EINVAL;
+ }
+
+ l2tp_name = g_strdup_printf("/var/run/connman/connman-xl2tpd.conf");
+
+ l2tp_fd = open(l2tp_name, O_RDWR|O_CREAT|O_TRUNC, S_IRUSR|S_IWUSR);
+ if (l2tp_fd < 0) {
+ g_free(l2tp_name);
+ connman_error("Error writing l2tp config");
+ return -EIO;
+ }
+
+ pppd_name = g_strdup_printf("/var/run/connman/connman-ppp-option.conf");
+
+ pppd_fd = open(pppd_name, O_RDWR|O_CREAT|O_TRUNC, S_IRUSR|S_IWUSR);
+ if (pppd_fd < 0) {
+ connman_error("Error writing pppd config");
+ g_free(l2tp_name);
+ g_free(pppd_name);
+ close(l2tp_fd);
+ return -EIO;
+ }
+
+ l2tp_write_config(provider, pppd_name, l2tp_fd);
+
+ write_pppd_option(provider, pppd_fd);
+
+ connman_task_add_argument(task, "-D", NULL);
+ connman_task_add_argument(task, "-c", l2tp_name);
+
+ g_free(l2tp_name);
+ g_free(pppd_name);
+
+ err = connman_task_run(task, l2tp_died, provider,
+ NULL, NULL, NULL);
+ if (err < 0) {
+ connman_error("l2tp failed to start");
+ return -EIO;
+ }
+
+ return 0;
+}
+
+static int l2tp_error_code(int exit_code)
+{
+
+ switch (exit_code) {
+ case 1:
+ return CONNMAN_PROVIDER_ERROR_CONNECT_FAILED;
+ case 2:
+ return CONNMAN_PROVIDER_ERROR_LOGIN_FAILED;
+ default:
+ return CONNMAN_PROVIDER_ERROR_UNKNOWN;
+ }
+}
+
+static struct vpn_driver vpn_driver = {
+ .flags = VPN_FLAG_NO_TUN,
+ .notify = l2tp_notify,
+ .connect = l2tp_connect,
+ .error_code = l2tp_error_code,
+};
+
+static int l2tp_init(void)
+{
+ connection = connman_dbus_get_connection();
+
+ return vpn_register("l2tp", &vpn_driver, L2TP);
+}
+
+static void l2tp_exit(void)
+{
+ vpn_unregister("l2tp");
+
+ dbus_connection_unref(connection);
+}
+
+CONNMAN_PLUGIN_DEFINE(l2tp, "l2tp plugin", VERSION,
+ CONNMAN_PLUGIN_PRIORITY_DEFAULT, l2tp_init, l2tp_exit)
projects / platform / upstream / connman.git / commitdiff