blob: 09674bd8e73b2eecfd3ea3318a8d4ce4844d8b41 [file] [log] [blame] [edit]
/*
*
* ConnMan VPN daemon
*
* Copyright (C) 2010,2013 BMW Car IT GmbH.
* Copyright (C) 2010,2012-2013 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 <stdio.h>
#include <net/if.h>
#include <glib.h>
#define CONNMAN_API_SUBJECT_TO_CHANGE
#include <connman/plugin.h>
#include <connman/log.h>
#include <connman/task.h>
#include <connman/ipconfig.h>
#include <connman/dbus.h>
#include "../vpn-provider.h"
#include "vpn.h"
#define ARRAY_SIZE(a) (sizeof(a)/sizeof(a[0]))
static DBusConnection *connection;
enum {
OPT_STRING = 1,
OPT_BOOLEAN = 2,
};
struct {
const char *cm_opt;
const char *vpnc_opt;
const char *vpnc_default;
int type;
bool cm_save;
} vpnc_options[] = {
{ "Host", "IPSec gateway", NULL, OPT_STRING, true },
{ "VPNC.IPSec.ID", "IPSec ID", NULL, OPT_STRING, true },
{ "VPNC.IPSec.Secret", "IPSec secret", NULL, OPT_STRING, false },
{ "VPNC.Xauth.Username", "Xauth username", NULL, OPT_STRING, false },
{ "VPNC.Xauth.Password", "Xauth password", NULL, OPT_STRING, false },
{ "VPNC.IKE.Authmode", "IKE Authmode", NULL, OPT_STRING, true },
{ "VPNC.IKE.DHGroup", "IKE DH Group", NULL, OPT_STRING, true },
{ "VPNC.PFS", "Perfect Forward Secrecy", NULL, OPT_STRING, true },
{ "VPNC.Domain", "Domain", NULL, OPT_STRING, true },
{ "VPNC.Vendor", "Vendor", NULL, OPT_STRING, true },
{ "VPNC.LocalPort", "Local Port", "0", OPT_STRING, true, },
{ "VPNC.CiscoPort", "Cisco UDP Encapsulation Port", "0", OPT_STRING,
true },
{ "VPNC.AppVersion", "Application Version", NULL, OPT_STRING, true },
{ "VPNC.NATTMode", "NAT Traversal Mode", "cisco-udp", OPT_STRING,
true },
{ "VPNC.DPDTimeout", "DPD idle timeout (our side)", NULL, OPT_STRING,
true },
{ "VPNC.SingleDES", "Enable Single DES", NULL, OPT_BOOLEAN, true },
{ "VPNC.NoEncryption", "Enable no encryption", NULL, OPT_BOOLEAN,
true },
};
static int vc_notify(DBusMessage *msg, struct vpn_provider *provider)
{
DBusMessageIter iter, dict;
char *address = NULL, *netmask = NULL, *gateway = NULL;
struct connman_ipaddress *ipaddress;
const char *reason, *key, *value;
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, "VPNGATEWAY"))
gateway = g_strdup(value);
if (!strcmp(key, "INTERNAL_IP4_ADDRESS"))
address = g_strdup(value);
if (!strcmp(key, "INTERNAL_IP4_NETMASK"))
netmask = g_strdup(value);
if (!strcmp(key, "INTERNAL_IP4_DNS"))
vpn_provider_set_nameservers(provider, value);
if (!strcmp(key, "CISCO_DEF_DOMAIN"))
vpn_provider_set_domain(provider, value);
if (g_str_has_prefix(key, "CISCO_SPLIT_INC") ||
g_str_has_prefix(key, "CISCO_IPV6_SPLIT_INC"))
vpn_provider_append_route(provider, key, value);
dbus_message_iter_next(&dict);
}
ipaddress = connman_ipaddress_alloc(AF_INET);
if (!ipaddress) {
g_free(address);
g_free(netmask);
g_free(gateway);
return VPN_STATE_FAILURE;
}
connman_ipaddress_set_ipv4(ipaddress, address, netmask, gateway);
vpn_provider_set_ipaddress(provider, ipaddress);
g_free(address);
g_free(netmask);
g_free(gateway);
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 vpnc: %s\n",
strerror(errno));
return byte_write;
}
len -= byte_write;
buf += byte_write;
}
return 0;
}
static ssize_t write_option(int fd, const char *key, const char *value)
{
gchar *buf;
ssize_t ret = 0;
if (key && value) {
buf = g_strdup_printf("%s %s\n", key, value);
ret = full_write(fd, buf, strlen(buf));
g_free(buf);
}
return ret;
}
static ssize_t write_bool_option(int fd, const char *key, const char *value)
{
gchar *buf;
ssize_t ret = 0;
if (key && value) {
if (strcasecmp(value, "yes") == 0 ||
strcasecmp(value, "true") == 0 ||
strcmp(value, "1") == 0) {
buf = g_strdup_printf("%s\n", key);
ret = full_write(fd, buf, strlen(buf));
g_free(buf);
}
}
return ret;
}
static int vc_write_config_data(struct vpn_provider *provider, int fd)
{
const char *opt_s;
int i;
for (i = 0; i < (int)ARRAY_SIZE(vpnc_options); i++) {
opt_s = vpn_provider_get_string(provider,
vpnc_options[i].cm_opt);
if (!opt_s)
opt_s = vpnc_options[i].vpnc_default;
if (!opt_s)
continue;
if (vpnc_options[i].type == OPT_STRING) {
if (write_option(fd,
vpnc_options[i].vpnc_opt, opt_s) < 0)
return -EIO;
} else if (vpnc_options[i].type == OPT_BOOLEAN) {
if (write_bool_option(fd,
vpnc_options[i].vpnc_opt, opt_s) < 0)
return -EIO;
}
}
return 0;
}
static int vc_save(struct vpn_provider *provider, GKeyFile *keyfile)
{
const char *option;
int i;
for (i = 0; i < (int)ARRAY_SIZE(vpnc_options); i++) {
if (strncmp(vpnc_options[i].cm_opt, "VPNC.", 5) == 0) {
if (!vpnc_options[i].cm_save)
continue;
option = vpn_provider_get_string(provider,
vpnc_options[i].cm_opt);
if (!option)
continue;
g_key_file_set_string(keyfile,
vpn_provider_get_save_group(provider),
vpnc_options[i].cm_opt, option);
}
}
return 0;
}
static int vc_connect(struct vpn_provider *provider,
struct connman_task *task, const char *if_name,
vpn_provider_connect_cb_t cb, const char *dbus_sender,
void *user_data)
{
const char *option;
int err = 0, fd;
option = vpn_provider_get_string(provider, "Host");
if (!option) {
connman_error("Host not set; cannot enable VPN");
err = -EINVAL;
goto done;
}
option = vpn_provider_get_string(provider, "VPNC.IPSec.ID");
if (!option) {
connman_error("Group not set; cannot enable VPN");
err = -EINVAL;
goto done;
}
connman_task_add_argument(task, "--non-inter", NULL);
connman_task_add_argument(task, "--no-detach", NULL);
connman_task_add_argument(task, "--ifname", if_name);
connman_task_add_argument(task, "--ifmode", "tun");
connman_task_add_argument(task, "--script",
SCRIPTDIR "/openconnect-script");
option = vpn_provider_get_string(provider, "VPNC.Debug");
if (option)
connman_task_add_argument(task, "--debug", option);
connman_task_add_argument(task, "-", NULL);
err = connman_task_run(task, vpn_died, provider,
&fd, NULL, NULL);
if (err < 0) {
connman_error("vpnc failed to start");
err = -EIO;
goto done;
}
err = vc_write_config_data(provider, fd);
close(fd);
done:
if (cb)
cb(provider, user_data, err);
return err;
}
static int vc_error_code(struct vpn_provider *provider, int exit_code)
{
switch (exit_code) {
case 1:
return VPN_PROVIDER_ERROR_CONNECT_FAILED;
case 2:
return VPN_PROVIDER_ERROR_LOGIN_FAILED;
default:
return VPN_PROVIDER_ERROR_UNKNOWN;
}
}
static struct vpn_driver vpn_driver = {
.notify = vc_notify,
.connect = vc_connect,
.error_code = vc_error_code,
.save = vc_save,
};
static int vpnc_init(void)
{
connection = connman_dbus_get_connection();
return vpn_register("vpnc", &vpn_driver, VPNC);
}
static void vpnc_exit(void)
{
vpn_unregister("vpnc");
dbus_connection_unref(connection);
}
CONNMAN_PLUGIN_DEFINE(vpnc, "vpnc plugin", VERSION,
CONNMAN_PLUGIN_PRIORITY_DEFAULT, vpnc_init, vpnc_exit)