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<?php
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/*
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openvpn.inc
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Copyright (C) 2004 Peter Curran (peter@closeconsultants.com).
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Copyright (C) 2005 Peter Allgeyer (allgeyer@web.de).
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All rights reserved.
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Redistribution and use in source and binary forms, with or without
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modification, are permitted provided that the following conditions are met:
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1. Redistributions of source code must retain the above copyright notice,
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this list of conditions and the following disclaimer.
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2. Redistributions in binary form must reproduce the above copyright
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notice, this list of conditions and the following disclaimer in the
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documentation and/or other materials provided with the distribution.
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THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES,
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INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY
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AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
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AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY,
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OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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POSSIBILITY OF SUCH DAMAGE.
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*/
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/* include all configuration functions */
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require_once("globals.inc");
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require_once("config.inc");
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require_once("functions.inc");
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function ovpn_configure($reconfigure) {
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global $config;
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if (is_array($config['ovpn']['server']))
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ovpn_server_crl_add();
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ovpn_server_ccd_add();
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ovpn_config_server($reconfigure);
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if (is_array($config['ovpn']['client']))
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ovpn_config_client();
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return;
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}
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function ovpn_link_tap() {
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/* Add a reference to the tap KLM. If ref count = 1, load it */
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global $g;
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if (!is_file($g['vardb_path'] ."/ovpn_tap_link")){
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$link_count = 1;
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mwexec("/sbin/kldload if_tap");
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$fd = fopen($g['vardb_path'] ."/ovpn_tap_link", 'w');
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}
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//else {
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// $fd = fopen($g['vardb_path'] ."/ovpn_tap_link", 'r+');
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// $link_count = fread($fd, filesize($g['vardb_path'] ."/ovpn_tap_link"));
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// $link_count ++;
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//}
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//fwrite($fd, $link_count);
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//fclose($fd);
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return true;
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}
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function ovpn_unlink_tap() {
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/* Remove a reference to the tap KLM. If ref count = 0, unload it */
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global $g;
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if (!is_file($g['vardb_path'] ."/ovpn_tap_link"))
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return false; //no file, no links so why are we called?
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$fd = fopen($g['vardb_path'] ."/ovpn_tap_link", 'r+');
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$link_count = fread($fd, filesize($g['vardb_path'] ."/ovpn_tap_link"));
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$link_count--;
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fwrite($fd, $link_count);
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fclose($fd);
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if ($link_count == 0)
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mwexec("/sbin/kldunload if_tap");
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return true;
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}
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/*****************************/
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/* Server related functions */
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/*****************************/
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/* Configure the server */
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function ovpn_config_server($reconfigure) {
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global $config, $g, $d_ovpnsrvdirty_path;
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if(!is_array($config['ovpn']['server']['tunnel']))
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return;
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foreach ($config['ovpn']['server']['tunnel'] as $id => $server) {
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/* get tunnel interface */
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$tun = $server['tun_iface'];
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if (isset($server['enable'])) {
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if ($g['booting']) {
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echo "Starting OpenVPN server $id... ";
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/* define configuration options */
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ovpn_srv_config_generate($id);
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/* Start the openvpn daemon */
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mwexec("/usr/local/sbin/openvpn {$g['varetc_path']}/ovpn_srv_{$tun}.conf");
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/* Send the boot message */
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echo "done\n";
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/* next server */
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continue;
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}
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/* send SIGUSR1 to running openvpn daemon */
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if ( $reconfigure == "true" && isset($server['dynip'])) {
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sigkillbypid($g['varrun_path']."/ovpn_srv_{$tun}.pid", "SIGUSR1");
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continue;
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}
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/* read dirtyfile */
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if (is_readable($d_ovpnsrvdirty_path))
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$lines = file($d_ovpnsrvdirty_path);
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/* reconfigure server */
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if (is_array($lines) && in_array($tun, $lines)) {
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/* kill running server */
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ovpn_server_kill($tun);
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/* remove old certs & keys */
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ovpn_server_certs_del($tun);
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/* define configuration options */
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ovpn_srv_config_generate($id);
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}
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/* Start the openvpn daemon */
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if (!is_readable("{$g['varrun_path']}/ovpn_srv_{$tun}.pid"))
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mwexec("/usr/local/sbin/openvpn {$g['varetc_path']}/ovpn_srv_{$tun}.conf");
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/* next server */
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continue;
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}
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/* server disabled */
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if (!$g['booting']) {
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/* kill running server */
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ovpn_server_kill($tun);
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/* Remove old certs & keys */
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ovpn_server_certs_del($tun);
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/* stop any processes, unload the tap module */
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//if ($server['type'] == "tap")
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// ovpn_unlink_tap();
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}
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}
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return 0;
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}
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/* Kill off a running server process */
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function ovpn_server_certs_del($tun) {
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global $g;
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/* Remove old certs & keys */
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unlink_if_exists("{$g['vardb_path']}/ovpn_ca_cert_{$tun}.pem");
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unlink_if_exists("{$g['vardb_path']}/ovpn_srv_cert_{$tun}.pem");
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unlink_if_exists("{$g['vardb_path']}/ovpn_srv_key_{$tun}.pem");
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unlink_if_exists("{$g['vardb_path']}/ovpn_dh_{$tun}.pem");
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unlink_if_exists("{$g['vardb_path']}/ovpn_srv_psk_{$tun}.pem");
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unlink_if_exists("{$g['varetc_path']}/ovpn_srv_up_{$tun}.sh");
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unlink_if_exists("{$g['varetc_path']}/ovpn_srv_{$tun}.conf");
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return 0;
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}
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/* Kill off a running server process */
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function ovpn_server_kill($tun) {
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global $g;
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/* kill running server */
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killbypid("{$g['varrun_path']}/ovpn_srv_{$tun}.pid");
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}
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/* Generate the config for a OpenVPN server */
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function ovpn_srv_config_generate($id) {
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global $config, $g;
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$server = $config['ovpn']['server']['tunnel'][$id];
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/* get tunnel interface */
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$tun = $server['tun_iface'];
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/* get optional interface name */
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$iface = ovpn_get_opt_interface($tun);
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/* Copy the TLS-Server certs & keys to disk */
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if ($server['authentication_method'] != "pre_shared_key" ) {
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$fd = fopen("{$g['vardb_path']}/ovpn_ca_cert_{$tun}.pem", "w");
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if ($fd) {
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fwrite($fd, base64_decode($server['ca_cert'])."\n");
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fclose($fd);
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}
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$fd = fopen("{$g['vardb_path']}/ovpn_srv_cert_{$tun}.pem", "w");
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if ($fd) {
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fwrite($fd, base64_decode($server['srv_cert'])."\n");
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fclose($fd);
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}
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touch ("{$g['vardb_path']}/ovpn_srv_key_{$tun}.pem");
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chmod ("{$g['vardb_path']}/ovpn_srv_key_{$tun}.pem", 0600);
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$fd = fopen("{$g['vardb_path']}/ovpn_srv_key_{$tun}.pem", "w");
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if ($fd) {
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fwrite($fd, base64_decode($server['srv_key'])."\n");
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fclose($fd);
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}
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$fd = fopen("{$g['vardb_path']}/ovpn_dh_{$tun}.pem", "w");
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if ($fd) {
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fwrite($fd, base64_decode($server['dh_param'])."\n");
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fclose($fd);
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}
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}
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if ($server['authentication_method'] == "pre_shared_key" || isset($server['tlsauth'])) {
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touch ("{$g['vardb_path']}/ovpn_srv_psk_{$tun}.pem");
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chmod ("{$g['vardb_path']}/ovpn_srv_psk_{$tun}.pem", 0600);
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$fd = fopen("{$g['vardb_path']}/ovpn_srv_psk_{$tun}.pem", "w");
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if ($fd) {
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fwrite($fd, base64_decode($server['pre-shared-key'])."\n");
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fclose($fd);
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}
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}
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$fd = fopen("{$g['varetc_path']}/ovpn_srv_{$tun}.conf", "w");
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if (!$fd) {
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printf("Error: cannot open ovpn_srv_{$tun}.conf in ovpn_srv_config_generate($id).\n");
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return 1;
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}
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/* First the generic stuff:
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- We are a server
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- We will run without privilege
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*/
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$ovpn_config = "";
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$ovpn_config .= <<<EOD
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daemon
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user nobody
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group nobody
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verb {$server['verb']}
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persist-tun
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persist-key
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status /var/log/openvpn_{$tun}.log 60
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writepid {$g['varrun_path']}/ovpn_srv_{$tun}.pid
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dev {$server['tun_iface']}
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port {$server['port']}
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cipher {$server['crypto']}
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EOD;
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/* Set protocol being used (p = udp (default), tcp-server) */
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if ($server['proto'] == "tcp")
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$ovpn_config .= "proto tcp-server\n";
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/* Interface binding - 1 or all */
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if ($server['bind_iface'] != 'all')
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if ($ipaddr = ovpn_get_ip($server['bind_iface']))
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$ovpn_config .= "local {$ipaddr}\n";
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/* are we using dynamic ip addresses? */
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if (isset($server['dynip']))
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$ovpn_config .= "persist-remote-ip\n";
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/* Client to client routing (off by default) */
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if (isset($server['cli2cli']))
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$ovpn_config .= "client-to-client\n";
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/* Limit server to a maximum of n concurrent clients. */
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if (!empty($server['maxcli']))
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$ovpn_config .= "max-clients {$server['maxcli']}\n";
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/* Authentication method */
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if ($server['authentication_method'] != "pre_shared_key") {
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$ovpn_config .= <<<EOD
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client-config-dir {$g['vardb_path']}/ccd
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ca {$g['vardb_path']}/ovpn_ca_cert_{$tun}.pem
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cert {$g['vardb_path']}/ovpn_srv_cert_{$tun}.pem
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key {$g['vardb_path']}/ovpn_srv_key_{$tun}.pem
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dh {$g['vardb_path']}/ovpn_dh_{$tun}.pem
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EOD;
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/* CRL list */
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if (isset($server['crlname']) &&
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is_readable("{$g['vardb_path']}/{$server['crlname']}.crl.pem")) {
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$ovpn_config .= "crl-verify {$g['vardb_path']}/{$server['crlname']}.crl.pem\n";
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}
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/* TLS auth */
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if (isset($server['tlsauth']))
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$ovpn_config .= "tls-auth {$g['vardb_path']}/ovpn_srv_psk_{$tun}.pem 0\n";
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306
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/* bridging enabled? */
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if ($server['bridge'] && $server['type'] == "tap") {
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if ($server['method'] == "ovpn") {
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$netmask = gen_subnet_mask($config['interfaces'][$server['bridge']]['subnet']);
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$ovpn_config .= "server-bridge {$server['gateway']} {$netmask} {$server['range_from']} {$server['range_to']}\n";
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} else {
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$ovpn_config .= <<<EOD
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mode server
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tls-server
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316
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EOD;
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}
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319
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$lastdigits = substr($tun, 3) + 2;
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$ovpn_srv_up = "/sbin/ifconfig " . $tun . " 127.0.0." . $lastdigits . "/32\n";
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$fdo = fopen("{$g['varetc_path']}/ovpn_srv_up_{$tun}.sh", "w");
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if ($fdo) {
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fwrite($fdo, $ovpn_srv_up);
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fclose($fdo);
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chmod ("{$g['varetc_path']}/ovpn_srv_up_{$tun}.sh", 0755);
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$ovpn_config .= "up /var/etc/ovpn_srv_up_{$tun}.sh\n";
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}
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} else {
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/* Not bridged, can be tun or tap, doesn't matter */
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$netmask = gen_subnet_mask($server['prefix']);
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334
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335
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if ($server['method'] == "ovpn") {
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/* new --server macro simplifies config */
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$ovpn_config .= "server {$server['ipblock']} {$netmask}\n";
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} else {
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339
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$ovpn_config .= <<<EOD
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mode server
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tls-server
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342
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ifconfig {$server['ipblock']} {$netmask}
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343
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EOD;
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}
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346
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} /* end bridging */
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347
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348
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/* Duplicate CNs */
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349
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if (isset($server['dupcn']))
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350
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$ovpn_config .= "duplicate-cn\n";
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351
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352
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} else {
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353
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/* 'authentication_method' == "pre_shared_key" */
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354
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$network = gen_subnet($server['lipaddr'], $server['netmask']);
|
|
355
|
$netmask = gen_subnet_mask($server['netmask']);
|
|
356
|
|
|
357
|
$ovpn_config .= "secret {$g['vardb_path']}/ovpn_srv_psk_{$tun}.pem 0\n";
|
|
358
|
|
|
359
|
if (strstr($server['type'], "tun")) {
|
|
360
|
$ovpn_config .= "ifconfig {$server['lipaddr']} {$server['ripaddr']}\n";
|
|
361
|
$ovpn_config .= "route {$network} {$netmask}\n";
|
|
362
|
} else {
|
|
363
|
$ovpn_config .= "ifconfig {$server['lipaddr']} {$netmask}\n";
|
|
364
|
}
|
|
365
|
|
|
366
|
if (isset($server['client-to-client']))
|
|
367
|
$ovpn_config .= "push \"route {$network} {$netmask}\"\n";
|
|
368
|
else
|
|
369
|
$ovpn_config .= "push \"route {$server['lipaddr']}\"\n";
|
|
370
|
|
|
371
|
} /* end authentication_method */
|
|
372
|
|
|
373
|
$push_options = "";
|
|
374
|
|
|
375
|
/* Client push - redirect gateway */
|
|
376
|
if (isset($server['psh_options']['redir'])) {
|
|
377
|
if (isset($server['psh_options']['redir_loc']))
|
|
378
|
$push_config .= "push \"redirect-gateway local\"\n";
|
|
379
|
else
|
|
380
|
$push_config .= "push \"redirect-gateway\"\n";
|
|
381
|
if ($server['method'] != "ovpn")
|
|
382
|
$push_config .= "push \"route-gateway {$server['ipblock']}\"\n";
|
|
383
|
}
|
|
384
|
|
|
385
|
/* Client push - route delay */
|
|
386
|
if (isset($server['psh_options']['rte_delay']))
|
|
387
|
$push_config .= "push \"route-delay {$server['psh_options']['rte_delay_int']}\"\n";
|
|
388
|
|
|
389
|
/* Client push - ping (note we set both server and client) */
|
|
390
|
if (isset ($server['psh_options']['ping'])){
|
|
391
|
$conflict = true;
|
|
392
|
$interval = $server['psh_options']['ping_int'];
|
|
393
|
$ovpn_config .= "ping {$server['psh_options']['ping_int']}\n ";
|
|
394
|
$push_config .= "push \"ping {$server['psh_options']['ping_int']}\"\n";
|
|
395
|
}
|
|
396
|
|
|
397
|
/* Client push - ping-restart (note server uses 2 x client interval) */
|
|
398
|
if (isset ($server['psh_options']['pingrst'])){
|
|
399
|
$conflict = true;
|
|
400
|
$interval = $server['psh_options']['pingrst_int'];
|
|
401
|
$ovpn_config .= "ping-restart " . ($interval * 2) . "\n";
|
|
402
|
$push_config .= "push \"ping-restart $interval\"\n";
|
|
403
|
}
|
|
404
|
|
|
405
|
/* Client push - ping-exit (set on client) */
|
|
406
|
if (isset ($server['psh_options']['pingexit'])){
|
|
407
|
$conflict = true;
|
|
408
|
$ovpn_config .= "ping-exit {$server['psh_options']['pingexit_int']}\n";
|
|
409
|
$push_config .= "push \"ping-exit {$server['psh_options']['pingexit_int']}\"\n";
|
|
410
|
}
|
|
411
|
|
|
412
|
/* Client push - inactive (set on client) */
|
|
413
|
if (isset ($server['psh_options']['inact'])){
|
|
414
|
$ovpn_config .= "inactive {$server['psh_options']['inact_int']}\n";
|
|
415
|
$push_config .= "push \"inactive {$server['psh_options']['inact_int']}\"\n";
|
|
416
|
}
|
|
417
|
|
|
418
|
if (isset($push_config))
|
|
419
|
$ovpn_config .= $push_config;
|
|
420
|
|
|
421
|
if (!isset($conflict))
|
|
422
|
$ovpn_config .= "keepalive 10 60\n";
|
|
423
|
|
|
424
|
/* Expert mode paramters */
|
|
425
|
if (isset($server['expertmode_enabled']) && is_array($server['expertmode'])) {
|
|
426
|
$ovpn_config .= ";begin expertmode\n";
|
|
427
|
foreach ($server['expertmode']['option'] as $option) {
|
|
428
|
$ovpn_config .= "{$option}\n";
|
|
429
|
}
|
|
430
|
$ovpn_config .= ";end expertmode\n";
|
|
431
|
}
|
|
432
|
|
|
433
|
fwrite($fd, $ovpn_config);
|
|
434
|
fclose($fd);
|
|
435
|
|
|
436
|
//trigger_error("OVPN: $ovpn_config", E_USER_NOTICE);
|
|
437
|
}
|
|
438
|
|
|
439
|
/* Define an OVPN Server tunnel interface in the interfaces array and assign a name */
|
|
440
|
function ovpn_server_iface(){
|
|
441
|
global $config, $g;
|
|
442
|
|
|
443
|
unset($filter_configure);
|
|
444
|
unset($bridge_configure);
|
|
445
|
|
|
446
|
foreach ($config['ovpn']['server']['tunnel'] as $id => $server) {
|
|
447
|
if (isset($server['enable'])) {
|
|
448
|
|
|
449
|
/* get tunnel interface */
|
|
450
|
$tun = $server['tun_iface'];
|
|
451
|
|
|
452
|
$i = 1;
|
|
453
|
while (true) {
|
|
454
|
$ifname = 'opt' . $i;
|
|
455
|
if (is_array($config['interfaces'][$ifname])) {
|
|
456
|
if ((isset($config['interfaces'][$ifname]['ovpn']))
|
|
457
|
&& ($config['interfaces'][$ifname]['ovpn'] == "server_{$tun}"))
|
|
458
|
/* Already an interface defined - overwrite */
|
|
459
|
break;
|
|
460
|
} else {
|
|
461
|
|
|
462
|
/* No existing entry, this is first unused */
|
|
463
|
$config['interfaces'][$ifname] = array();
|
|
464
|
|
|
465
|
/* add new filter rules */
|
|
466
|
$filter_configure = true;
|
|
467
|
break;
|
|
468
|
}
|
|
469
|
$i++;
|
|
470
|
}
|
|
471
|
$config['interfaces'][$ifname]['descr'] = strtoupper($server['tun_iface']);
|
|
472
|
$config['interfaces'][$ifname]['if'] = $server['tun_iface'];
|
|
473
|
if ($server['method'] == "ovpn")
|
|
474
|
$config['interfaces'][$ifname]['ipaddr'] = long2ip( ip2long($server['ipblock']) + 1);
|
|
475
|
else
|
|
476
|
$config['interfaces'][$ifname]['ipaddr'] = $server['ipblock'];
|
|
477
|
if (isset($server['bridge'])) {
|
|
478
|
$config['interfaces'][$ifname]['bridge'] = $server['bridge'];
|
|
479
|
$bridge_configure = true;
|
|
480
|
} else if (isset($config['interfaces'][$ifname]['bridge'])) {
|
|
481
|
/* bridge config removed */
|
|
482
|
unset ($config['interfaces'][$ifname]['bridge']);
|
|
483
|
$bridge_configure = true;
|
|
484
|
}
|
|
485
|
$config['interfaces'][$ifname]['subnet'] = $server['prefix'];
|
|
486
|
$config['interfaces'][$ifname]['enable'] = isset($server['enable']) ? true : false;
|
|
487
|
$config['interfaces'][$ifname]['ovpn'] = "server_{$tun}";
|
|
488
|
|
|
489
|
write_config();
|
|
490
|
}
|
|
491
|
}
|
|
492
|
|
|
493
|
/* do we have to reconfigure filter rules? */
|
|
494
|
if (isset($bridge_configure))
|
|
495
|
interfaces_optional_configure();
|
|
496
|
else if (isset($filter_configure))
|
|
497
|
filter_configure();
|
|
498
|
|
|
499
|
return "OpenVPN server interface defined";
|
|
500
|
}
|
|
501
|
|
|
502
|
/* Delete a server interface definition */
|
|
503
|
function ovpn_server_iface_del($tun) {
|
|
504
|
global $config;
|
|
505
|
|
|
506
|
for ($i = 1; is_array($config['interfaces']['opt' . $i]); $i++) {
|
|
507
|
$ifname = 'opt' . $i;
|
|
508
|
if ((isset($config['interfaces'][$ifname]['ovpn']))
|
|
509
|
&& ($config['interfaces'][$ifname]['if'] == "$tun")) {
|
|
510
|
unset($config['interfaces'][$ifname]);
|
|
511
|
break;
|
|
512
|
}
|
|
513
|
}
|
|
514
|
|
|
515
|
/* shift down other OPTn interfaces to get rid of holes */
|
|
516
|
$i++;
|
|
517
|
|
|
518
|
/* look at the following OPTn ports */
|
|
519
|
while (is_array($config['interfaces']['opt' . $i])) {
|
|
520
|
$config['interfaces']['opt' . ($i - 1)] =
|
|
521
|
$config['interfaces']['opt' . $i];
|
|
522
|
|
|
523
|
unset($config['interfaces']['opt' . $i]);
|
|
524
|
$i++;
|
|
525
|
}
|
|
526
|
|
|
527
|
/* reconfigure filter rules */
|
|
528
|
interfaces_optional_configure();
|
|
529
|
}
|
|
530
|
|
|
531
|
/* Add client config file */
|
|
532
|
function ovpn_server_ccd_add() {
|
|
533
|
global $config, $g;
|
|
534
|
|
|
535
|
if (is_array($config['ovpn']['server']['ccd'])) {
|
|
536
|
foreach ($config['ovpn']['server']['ccd'] as $id => $server) {
|
|
537
|
/* define configuration options */
|
|
538
|
ovpn_server_ccd_generate($id);
|
|
539
|
}
|
|
540
|
}
|
|
541
|
}
|
|
542
|
|
|
543
|
|
|
544
|
/* Construct client config file */
|
|
545
|
function ovpn_server_ccd_generate($id) {
|
|
546
|
global $config, $g;
|
|
547
|
$ovpnccd = $config['ovpn']['server']['ccd'][$id];
|
|
548
|
|
|
549
|
$cn = $ovpnccd['cn'];
|
|
550
|
$ccd_config = "";
|
|
551
|
$push_options = "";
|
|
552
|
|
|
553
|
/* Push reset */
|
|
554
|
if (!isset($ovpnccd['disable']) && isset($ovpnccd['psh_reset'])) {
|
|
555
|
$ccd_config .= "push-reset\n";
|
|
556
|
|
|
557
|
/* Client push - redirect gateway */
|
|
558
|
if (isset($ovpnccd['psh_options']['redir'])) {
|
|
559
|
if (isset($ovpnccd['psh_options']['redir_loc']))
|
|
560
|
$push_config .= "push \"redirect-gateway local\"\n";
|
|
561
|
else
|
|
562
|
$push_config .= "push \"redirect-gateway\"\n";
|
|
563
|
}
|
|
564
|
|
|
565
|
/* Client push - route delay */
|
|
566
|
if (isset($ovpnccd['psh_options']['rte_delay']))
|
|
567
|
$push_config .= "push \"route-delay {$ovpnccd['psh_options']['rte_delay_int']}\"\n";
|
|
568
|
|
|
569
|
/* Client push - ping (note we set both server and client) */
|
|
570
|
if (isset ($ovpnccd['psh_options']['ping'])){
|
|
571
|
$ccd_config .= "ping {$server['psh_options']['ping_int']}\n ";
|
|
572
|
$push_config .= "push \"ping {$ovpnccd['psh_options']['ping_int']}\"\n";
|
|
573
|
}
|
|
574
|
|
|
575
|
/* Client push - ping-restart (note server uses 2 x client interval) */
|
|
576
|
if (isset ($ovpnccd['psh_options']['pingrst'])){
|
|
577
|
$interval = $ovpnccd['psh_options']['pingrst_int'];
|
|
578
|
$ccd_config .= "ping-restart " . ($interval * 2) . "\n";
|
|
579
|
$push_config .= "push \"ping-restart $interval\"\n";
|
|
580
|
}
|
|
581
|
|
|
582
|
/* Client push - ping-exit (set on client) */
|
|
583
|
if (isset ($ovpnccd['psh_options']['pingexit'])){
|
|
584
|
$ccd_config .= "ping-exit {$ovpnccd['psh_options']['pingexit_int']}\n";
|
|
585
|
$push_config .= "push \"ping-exit {$ovpnccd['psh_options']['pingexit_int']}\"\n";
|
|
586
|
}
|
|
587
|
|
|
588
|
/* Client push - inactive (set on client) */
|
|
589
|
if (isset ($ovpnccd['psh_options']['inact'])){
|
|
590
|
$ccd_config .= "inactive {$ovpnccd['psh_options']['inact_int']}\n";
|
|
591
|
$push_config .= "push \"inactive {$ovpnccd['psh_options']['inact_int']}\"\n";
|
|
592
|
}
|
|
593
|
|
|
594
|
if (isset($push_config))
|
|
595
|
$ccd_config .= $push_config;
|
|
596
|
}
|
|
597
|
|
|
598
|
if (!isset($ovpnccd['disable']) && is_array($ovpnccd['options'])) {
|
|
599
|
foreach ($ovpnccd['options']['option'] as $option) {
|
|
600
|
$ccd_config .= "{$option}\n";
|
|
601
|
}
|
|
602
|
}
|
|
603
|
|
|
604
|
/* Disable client from connecting */
|
|
605
|
if (isset($ovpnccd['disable']))
|
|
606
|
$ccd_config = "disable\n";
|
|
607
|
|
|
608
|
unlink_if_exists("{$g['vardb_path']}/ccd/{$cn}");
|
|
609
|
|
|
610
|
if (isset($ccd_config) && isset($ovpnccd['enable'])) {
|
|
611
|
$fd = fopen("{$g['vardb_path']}/ccd/{$cn}", "w");
|
|
612
|
if ($fd) {
|
|
613
|
fwrite($fd, $ccd_config."\n");
|
|
614
|
fclose($fd);
|
|
615
|
}
|
|
616
|
}
|
|
617
|
}
|
|
618
|
|
|
619
|
/* Delete client config file */
|
|
620
|
function ovpn_server_ccd_del($cn) {
|
|
621
|
global $g;
|
|
622
|
|
|
623
|
unlink_if_exists("{$g['vardb_path']}/ccd/{$cn}");
|
|
624
|
return 0;
|
|
625
|
}
|
|
626
|
|
|
627
|
/* Add CRL file */
|
|
628
|
function ovpn_server_crl_add() {
|
|
629
|
global $config, $g, $d_ovpncrldirty_path;
|
|
630
|
|
|
631
|
if (is_array($config['ovpn']['server']['crl'])) {
|
|
632
|
foreach ($config['ovpn']['server']['crl'] as $id => $crlent) {
|
|
633
|
/* get crl file name */
|
|
634
|
$name = $crlent['crlname'];
|
|
635
|
|
|
636
|
if (isset($crlent['enable'])) {
|
|
637
|
|
|
638
|
/* add file */
|
|
639
|
ovpn_server_crl_generate($id);
|
|
640
|
|
|
641
|
if ($g['booting']) {
|
|
642
|
/* next crl file */
|
|
643
|
continue;
|
|
644
|
}
|
|
645
|
|
|
646
|
/* read dirtyfile */
|
|
647
|
if (is_readable($d_ovpncrldirty_path))
|
|
648
|
$lines = file($d_ovpncrldirty_path);
|
|
649
|
|
|
650
|
/* reconfigure crl file */
|
|
651
|
if (is_array($lines) && in_array($name, $lines)) {
|
|
652
|
|
|
653
|
/* restart running openvpn daemon */
|
|
654
|
foreach ($config['ovpn']['server']['tunnel'] as $id => $server) {
|
|
655
|
$tun = $server['tun_iface'];
|
|
656
|
|
|
657
|
if ($server['enable'] &&
|
|
658
|
isset($server['crlname']) && $server['crlname'] == $name)
|
|
659
|
/* kill running server */
|
|
660
|
ovpn_server_kill($tun);
|
|
661
|
|
|
662
|
/* Start the openvpn daemon */
|
|
663
|
mwexec("/usr/local/sbin/openvpn {$g['varetc_path']}/ovpn_srv_{$tun}.conf");
|
|
664
|
}
|
|
665
|
|
|
666
|
}
|
|
667
|
|
|
668
|
/* next crl file */
|
|
669
|
continue;
|
|
670
|
}
|
|
671
|
|
|
672
|
/* crl file disabled: remove file */
|
|
673
|
ovpn_server_crl_del($name);
|
|
674
|
}
|
|
675
|
}
|
|
676
|
return 0;
|
|
677
|
}
|
|
678
|
|
|
679
|
/* Write CRL to file */
|
|
680
|
function ovpn_server_crl_generate($id) {
|
|
681
|
global $config, $g;
|
|
682
|
|
|
683
|
$ovpncrl = $config['ovpn']['server']['crl'][$id];
|
|
684
|
|
|
685
|
$fd = fopen("{$g['vardb_path']}/{$ovpncrl['crlname']}.crl.pem", "w");
|
|
686
|
if ($fd) {
|
|
687
|
fwrite($fd, base64_decode($ovpncrl['crl_list'])."\n");
|
|
688
|
fclose($fd);
|
|
689
|
}
|
|
690
|
}
|
|
691
|
|
|
692
|
/* Delete CRL file */
|
|
693
|
function ovpn_server_crl_del($name) {
|
|
694
|
global $config, $g;
|
|
695
|
|
|
696
|
/* have to wipe out the crl from the server config */
|
|
697
|
foreach ($config['ovpn']['server']['tunnel'] as $id => $server) {
|
|
698
|
if (isset($server['crlname']) && $server['crlname'] == $name) {
|
|
699
|
|
|
700
|
/* get tunnel interface */
|
|
701
|
$tun = $server['tun_iface'];
|
|
702
|
|
|
703
|
/* remove crl file entry */
|
|
704
|
unset($config['ovpn']['server']['tunnel'][$id]['crlname']);
|
|
705
|
write_config();
|
|
706
|
|
|
707
|
/* kill running server */
|
|
708
|
ovpn_server_kill($tun);
|
|
709
|
|
|
710
|
/* remove old certs & keys */
|
|
711
|
ovpn_server_certs_del($tun);
|
|
712
|
|
|
713
|
/* reconfigure daemon */
|
|
714
|
ovpn_srv_config_generate($id);
|
|
715
|
|
|
716
|
/* Start the openvpn daemon */
|
|
717
|
mwexec("/usr/local/sbin/openvpn {$g['varetc_path']}/ovpn_srv_{$tun}.conf");
|
|
718
|
}
|
|
719
|
}
|
|
720
|
|
|
721
|
unlink_if_exists("{$g['vardb_path']}/{$name}.crl.pem");
|
|
722
|
return 0;
|
|
723
|
}
|
|
724
|
|
|
725
|
|
|
726
|
/* Get a list of crl files */
|
|
727
|
function ovpn_get_crl_list() {
|
|
728
|
global $config;
|
|
729
|
|
|
730
|
$crl_list = array();
|
|
731
|
|
|
732
|
if (is_array($config['ovpn']['server']['crl'])) {
|
|
733
|
foreach ($config['ovpn']['server']['crl'] as $crlent) {
|
|
734
|
if (isset($crlent['enable']))
|
|
735
|
$crl_list[] = $crlent['crlname'];
|
|
736
|
}
|
|
737
|
}
|
|
738
|
return $crl_list;
|
|
739
|
}
|
|
740
|
|
|
741
|
/* append interface to $_ovpnsrvdirty_path */
|
|
742
|
function ovpn_srv_dirty($tun) {
|
|
743
|
global $d_ovpnsrvdirty_path;
|
|
744
|
|
|
745
|
$fd = fopen($d_ovpnsrvdirty_path, 'a');
|
|
746
|
if ($fd) {
|
|
747
|
fwrite($fd, $tun);
|
|
748
|
fclose($fd);
|
|
749
|
}
|
|
750
|
}
|
|
751
|
|
|
752
|
/* append file name to $_ovpncrldirty_path */
|
|
753
|
function ovpn_crl_dirty($name) {
|
|
754
|
global $d_ovpncrldirty_path;
|
|
755
|
|
|
756
|
$fd = fopen($d_ovpncrldirty_path, 'a');
|
|
757
|
if ($fd) {
|
|
758
|
fwrite($fd, $name);
|
|
759
|
fclose($fd);
|
|
760
|
}
|
|
761
|
}
|
|
762
|
|
|
763
|
|
|
764
|
/****************************/
|
|
765
|
/* Client related functions */
|
|
766
|
/****************************/
|
|
767
|
|
|
768
|
function ovpn_config_client() {
|
|
769
|
/* Boot time configuration */
|
|
770
|
global $config, $g, $d_ovpnclidirty_path;;
|
|
771
|
|
|
772
|
foreach ($config['ovpn']['client']['tunnel'] as $id => $client) {
|
|
773
|
|
|
774
|
/* get tunnel interface */
|
|
775
|
$tun = $client['if'];
|
|
776
|
|
|
777
|
if (isset($client['enable'])) {
|
|
778
|
|
|
779
|
if ($g['booting']) {
|
|
780
|
echo "Starting OpenVPN client $id... ";
|
|
781
|
|
|
782
|
/* define configuration options */
|
|
783
|
ovpn_cli_config_generate($id);
|
|
784
|
|
|
785
|
/* Start openvpn for this client */
|
|
786
|
mwexec("/usr/local/sbin/openvpn {$g['varetc_path']}/ovpn_cli_{$tun}.conf");
|
|
787
|
|
|
788
|
/* Send the boot message */
|
|
789
|
echo "done\n";
|
|
790
|
|
|
791
|
/* next client */
|
|
792
|
continue;
|
|
793
|
}
|
|
794
|
|
|
795
|
/* read dirtyfile */
|
|
796
|
if (is_readable($d_ovpnclidirty_path))
|
|
797
|
$lines = file($d_ovpnclidirty_path);
|
|
798
|
|
|
799
|
/* reconfigure client */
|
|
800
|
if (is_array($lines) && in_array($tun, $lines)) {
|
|
801
|
|
|
802
|
/* kill running client */
|
|
803
|
ovpn_client_kill($tun);
|
|
804
|
|
|
805
|
/* remove old certs & keys */
|
|
806
|
ovpn_client_certs_del($tun);
|
|
807
|
|
|
808
|
/* define configuration options */
|
|
809
|
ovpn_cli_config_generate($id);
|
|
810
|
}
|
|
811
|
|
|
812
|
/* Start the openvpn daemon */
|
|
813
|
if (!is_readable("{$g['varrun_path']}/ovpn_cli_{$tun}.pid"))
|
|
814
|
mwexec("/usr/local/sbin/openvpn {$g['varetc_path']}/ovpn_cli_{$tun}.conf");
|
|
815
|
|
|
816
|
/* next client */
|
|
817
|
continue;
|
|
818
|
}
|
|
819
|
|
|
820
|
/* client disabled */
|
|
821
|
if (!$g['booting']) {
|
|
822
|
/* kill running client */
|
|
823
|
ovpn_client_kill($tun);
|
|
824
|
|
|
825
|
/* remove old certs & keys */
|
|
826
|
ovpn_client_certs_del($tun);
|
|
827
|
|
|
828
|
/* stop any processes, unload the tap module */
|
|
829
|
//if ($client['type'] == "tap")
|
|
830
|
// ovpn_unlink_tap();
|
|
831
|
}
|
|
832
|
}
|
|
833
|
return 0;
|
|
834
|
}
|
|
835
|
|
|
836
|
/* Kill off a running client process */
|
|
837
|
function ovpn_client_certs_del($tun) {
|
|
838
|
global $g;
|
|
839
|
|
|
840
|
/* Remove old certs & keys */
|
|
841
|
unlink_if_exists("{$g['vardb_path']}/ovpn_cli_ca_cert_{$tun}.pem");
|
|
842
|
unlink_if_exists("{$g['vardb_path']}/ovpn_cli_cert_{$tun}.pem");
|
|
843
|
unlink_if_exists("{$g['vardb_path']}/ovpn_cli_key_{$tun}.pem");
|
|
844
|
unlink_if_exists("{$g['vardb_path']}/ovpn_cli_psk_{$tun}.pem");
|
|
845
|
unlink_if_exists("{$g['varetc_path']}/ovpn_cli_up_{$tun}.pem");
|
|
846
|
unlink_if_exists("{$g['varetc_path']}/ovpn_cli_{$tun}.conf");
|
|
847
|
|
|
848
|
return 0;
|
|
849
|
}
|
|
850
|
|
|
851
|
/* Kill off a running client process */
|
|
852
|
function ovpn_client_kill($tun) {
|
|
853
|
global $g;
|
|
854
|
|
|
855
|
/* kill running client */
|
|
856
|
killbypid("{$g['varrun_path']}/ovpn_cli_{$tun}.pid");
|
|
857
|
}
|
|
858
|
|
|
859
|
/* Generate the config for a OpenVPN client */
|
|
860
|
function ovpn_cli_config_generate($id) {
|
|
861
|
/* configure the named client */
|
|
862
|
global $config, $g;
|
|
863
|
$client = $config['ovpn']['client']['tunnel'][$id];
|
|
864
|
|
|
865
|
/* get tunnel interface */
|
|
866
|
$tun = $client['if'];
|
|
867
|
|
|
868
|
/* get optional interface name */
|
|
869
|
$iface = ovpn_get_opt_interface($tun);
|
|
870
|
|
|
871
|
/* Copy the TLS-Client certs & keys to disk */
|
|
872
|
if ($client['authentication_method'] != "pre_shared_key" ) {
|
|
873
|
|
|
874
|
$fd = fopen("{$g['vardb_path']}/ovpn_cli_ca_cert_{$tun}.pem", "w");
|
|
875
|
if ($fd) {
|
|
876
|
fwrite($fd, base64_decode($client['ca_cert'])."\n");
|
|
877
|
fclose($fd);
|
|
878
|
}
|
|
879
|
|
|
880
|
$fd = fopen("{$g['vardb_path']}/ovpn_cli_cert_{$tun}.pem", "w");
|
|
881
|
if ($fd) {
|
|
882
|
fwrite($fd, base64_decode($client['cli_cert'])."\n");
|
|
883
|
fclose($fd);
|
|
884
|
}
|
|
885
|
|
|
886
|
touch ("{$g['vardb_path']}/ovpn_cli_key_{$tun}.pem");
|
|
887
|
chmod ("{$g['vardb_path']}/ovpn_cli_key_{$tun}.pem", 0600);
|
|
888
|
$fd = fopen("{$g['vardb_path']}/ovpn_cli_key_{$tun}.pem", "w");
|
|
889
|
if ($fd) {
|
|
890
|
fwrite($fd, base64_decode($client['cli_key'])."\n");
|
|
891
|
fclose($fd);
|
|
892
|
}
|
|
893
|
}
|
|
894
|
|
|
895
|
if ($client['authentication_method'] == "pre_shared_key" || isset($client['tlsauth'])) {
|
|
896
|
touch ("{$g['vardb_path']}/ovpn_cli_psk_{$tun}.pem");
|
|
897
|
chmod ("{$g['vardb_path']}/ovpn_cli_psk_{$tun}.pem", 0600);
|
|
898
|
$fd = fopen("{$g['vardb_path']}/ovpn_cli_psk_{$tun}.pem", "w");
|
|
899
|
if ($fd) {
|
|
900
|
fwrite($fd, base64_decode($client['pre-shared-key'])."\n");
|
|
901
|
fclose($fd);
|
|
902
|
}
|
|
903
|
}
|
|
904
|
|
|
905
|
$fd = fopen("{$g['varetc_path']}/ovpn_cli_{$tun}.conf", "w");
|
|
906
|
if (!$fd) {
|
|
907
|
printf("Error: cannot open ovpn_cli_{$tun}.conf in ovpn_cli_config_generate($id).\n");
|
|
908
|
return 1;
|
|
909
|
}
|
|
910
|
|
|
911
|
/* Client support in 2.0 is very simple */
|
|
912
|
$ovpn_config = "";
|
|
913
|
$ovpn_config .= <<<EOD
|
|
914
|
daemon
|
|
915
|
verb 1
|
|
916
|
status /var/log/openvpn_{$tun}.log 60
|
|
917
|
writepid {$g['varrun_path']}/ovpn_cli_{$tun}.pid
|
|
918
|
dev {$client['if']}
|
|
919
|
lport {$client['cport']}
|
|
920
|
remote {$client['saddr']} {$client['sport']}
|
|
921
|
cipher {$client['crypto']}
|
|
922
|
|
|
923
|
EOD;
|
|
924
|
|
|
925
|
/* Version 1.0 compatibility; http://openvpn.net/compat.html */
|
|
926
|
if ($client['ver'] != "2") {
|
|
927
|
$ovpn_config .= <<<EOD
|
|
928
|
key-method 1
|
|
929
|
tun-mtu 1500
|
|
930
|
tun-mtu-extra 32
|
|
931
|
mssfix 1450
|
|
932
|
|
|
933
|
EOD;
|
|
934
|
}
|
|
935
|
|
|
936
|
/* Set protocol being used (p = udp (default), tcp-client) */
|
|
937
|
if ($client['proto'] == "tcp")
|
|
938
|
$ovpn_config .= "proto tcp-client\n";
|
|
939
|
|
|
940
|
/* TLS-Client params */
|
|
941
|
if ($client['authentication_method'] != "pre_shared_key") {
|
|
942
|
$ovpn_config .= <<<EOD
|
|
943
|
ca {$g['vardb_path']}/ovpn_cli_ca_cert_{$tun}.pem
|
|
944
|
cert {$g['vardb_path']}/ovpn_cli_cert_{$tun}.pem
|
|
945
|
key {$g['vardb_path']}/ovpn_cli_key_{$tun}.pem
|
|
946
|
|
|
947
|
EOD;
|
|
948
|
|
|
949
|
if (isset($client['pull']))
|
|
950
|
$ovpn_config .= "client\n";
|
|
951
|
else
|
|
952
|
$ovpn_config .= "tls-client\n";
|
|
953
|
|
|
954
|
/* TLS auth */
|
|
955
|
if (isset($client['ns_cert_type']))
|
|
956
|
$ovpn_config .= "ns-cert-type server\n";
|
|
957
|
|
|
958
|
/* TLS auth */
|
|
959
|
if (isset($client['tlsauth']))
|
|
960
|
$ovpn_config .= "tls-auth {$g['vardb_path']}/ovpn_cli_psk_{$tun}.pem 1\n";
|
|
961
|
|
|
962
|
/* bridging enabled? */
|
|
963
|
if ($client['bridge'] && $client['type'] == "tap") {
|
|
964
|
$lastdigits = substr($tun, 3) + 2;
|
|
965
|
$ovpn_cli_up = "/sbin/ifconfig " . $tun . " 127.0.0." . $lastdigits . "/32\n";
|
|
966
|
|
|
967
|
$fdo = fopen("{$g['varetc_path']}/ovpn_cli_up_{$tun}.sh", "w");
|
|
968
|
if ($fdo) {
|
|
969
|
fwrite($fdo, $ovpn_cli_up);
|
|
970
|
fclose($fdo);
|
|
971
|
chmod ("{$g['varetc_path']}/ovpn_cli_up_{$tun}.sh", 0755);
|
|
972
|
$ovpn_config .= "up /var/etc/ovpn_cli_up_{$tun}.sh\n";
|
|
973
|
}
|
|
974
|
}
|
|
975
|
|
|
976
|
} else {
|
|
977
|
/* 'authentication_method' == "pre_shared_key" */
|
|
978
|
$ovpn_config .= "secret {$g['vardb_path']}/ovpn_cli_psk_{$tun}.pem 0\n";
|
|
979
|
|
|
980
|
$network = gen_subnet($client['lipaddr'], $client['netmask']);
|
|
981
|
$netmask = gen_subnet_mask($client['netmask']);
|
|
982
|
|
|
983
|
if (strstr($client['type'], "tap"))
|
|
984
|
$ovpn_config .= "ifconfig {$client['lipaddr']} {$netmask}\n";
|
|
985
|
else
|
|
986
|
$ovpn_config .= "ifconfig {$client['lipaddr']} {$client['ripaddr']}\n";
|
|
987
|
|
|
988
|
} /* end authentication_method */
|
|
989
|
|
|
990
|
/* Expert mode paramters */
|
|
991
|
if (isset($client['expertmode_enabled']) && is_array($client['expertmode'])) {
|
|
992
|
$ovpn_config .= ";begin expertmode\n";
|
|
993
|
foreach ($client['expertmode']['option'] as $option) {
|
|
994
|
$ovpn_config .= "{$option}\n";
|
|
995
|
}
|
|
996
|
$ovpn_config .= ";end expertmode\n";
|
|
997
|
}
|
|
998
|
|
|
999
|
fwrite($fd, $ovpn_config);
|
|
1000
|
fclose($fd);
|
|
1001
|
|
|
1002
|
/* trigger_error("OVPN: $ovpn_config", E_USER_NOTICE); */
|
|
1003
|
}
|
|
1004
|
|
|
1005
|
/* Define an OVPN tunnel interface in the interfaces array for each client */
|
|
1006
|
function ovpn_client_iface(){
|
|
1007
|
global $config;
|
|
1008
|
|
|
1009
|
unset($filter_configure);
|
|
1010
|
unset($bridge_configure);
|
|
1011
|
|
|
1012
|
foreach ($config['ovpn']['client']['tunnel'] as $id => $client) {
|
|
1013
|
if (isset($client['enable'])) {
|
|
1014
|
|
|
1015
|
/* get tunnel interface */
|
|
1016
|
$tun = $client['if'];
|
|
1017
|
|
|
1018
|
$i = 1;
|
|
1019
|
while (true) {
|
|
1020
|
$ifname = 'opt' . $i;
|
|
1021
|
if (is_array($config['interfaces'][$ifname])) {
|
|
1022
|
if ((isset($config['interfaces'][$ifname]['ovpn']))
|
|
1023
|
&& ($config['interfaces'][$ifname]['ovpn'] == "client_{$tun}"))
|
|
1024
|
/* Already an interface defined - overwrite */
|
|
1025
|
break;
|
|
1026
|
} else {
|
|
1027
|
|
|
1028
|
/* No existing entry, this is first unused */
|
|
1029
|
$config['interfaces'][$ifname] = array();
|
|
1030
|
|
|
1031
|
/* add new filter rules */
|
|
1032
|
$filter_configure = true;
|
|
1033
|
break;
|
|
1034
|
}
|
|
1035
|
$i++;
|
|
1036
|
}
|
|
1037
|
$config['interfaces'][$ifname]['descr'] = strtoupper($client['if']);
|
|
1038
|
$config['interfaces'][$ifname]['if'] = $client['if'];
|
|
1039
|
$config['interfaces'][$ifname]['ipaddr'] = "0.0.0.0";
|
|
1040
|
$config['interfaces'][$ifname]['subnet'] = "0";
|
|
1041
|
if (isset($client['bridge'])) {
|
|
1042
|
$config['interfaces'][$ifname]['bridge'] = $client['bridge'];
|
|
1043
|
$bridge_configure = true;
|
|
1044
|
} else if (isset($config['interfaces'][$ifname]['bridge'])) {
|
|
1045
|
/* bridge config removed */
|
|
1046
|
unset ($config['interfaces'][$ifname]['bridge']);
|
|
1047
|
$bridge_configure = true;
|
|
1048
|
}
|
|
1049
|
$config['interfaces'][$ifname]['enable'] = isset($client['enable']) ? true : false;
|
|
1050
|
$config['interfaces'][$ifname]['ovpn'] = "client_{$tun}";
|
|
1051
|
write_config();
|
|
1052
|
}
|
|
1053
|
}
|
|
1054
|
|
|
1055
|
/* do we have to reconfigure filter rules? */
|
|
1056
|
if (isset($bridge_configure))
|
|
1057
|
interfaces_optional_configure();
|
|
1058
|
else if (isset($filter_configure))
|
|
1059
|
filter_configure();
|
|
1060
|
|
|
1061
|
return "OpenVPN client interfaces defined";
|
|
1062
|
}
|
|
1063
|
|
|
1064
|
/* Delete a client interface definition */
|
|
1065
|
function ovpn_client_iface_del($tun) {
|
|
1066
|
global $config;
|
|
1067
|
|
|
1068
|
for ($i = 1; is_array($config['interfaces']['opt' . $i]); $i++) {
|
|
1069
|
$ifname = 'opt' . $i;
|
|
1070
|
if ((isset($config['interfaces'][$ifname]['ovpn']))
|
|
1071
|
&& ($config['interfaces'][$ifname]['if'] == "$tun")) {
|
|
1072
|
unset($config['interfaces'][$ifname]);
|
|
1073
|
break;
|
|
1074
|
}
|
|
1075
|
}
|
|
1076
|
|
|
1077
|
/* shift down other OPTn interfaces to get rid of holes */
|
|
1078
|
$i++;
|
|
1079
|
|
|
1080
|
/* look at the following OPTn ports */
|
|
1081
|
while (is_array($config['interfaces']['opt' . $i])) {
|
|
1082
|
$config['interfaces']['opt' . ($i - 1)] =
|
|
1083
|
$config['interfaces']['opt' . $i];
|
|
1084
|
|
|
1085
|
unset($config['interfaces']['opt' . $i]);
|
|
1086
|
$i++;
|
|
1087
|
}
|
|
1088
|
|
|
1089
|
/* reconfigure filter rules */
|
|
1090
|
interfaces_optional_configure();
|
|
1091
|
}
|
|
1092
|
|
|
1093
|
/* append interface to ovpndirty_path */
|
|
1094
|
function ovpn_cli_dirty($tun) {
|
|
1095
|
global $d_ovpnclidirty_path;
|
|
1096
|
|
|
1097
|
$fd = fopen($d_ovpnclidirty_path, 'a');
|
|
1098
|
if ($fd) {
|
|
1099
|
fwrite($fd, $tun);
|
|
1100
|
fclose($fd);
|
|
1101
|
}
|
|
1102
|
}
|
|
1103
|
|
|
1104
|
|
|
1105
|
/******************/
|
|
1106
|
/* Misc functions */
|
|
1107
|
/******************/
|
|
1108
|
|
|
1109
|
/* find the first available device of type $type */
|
|
1110
|
function getnxt_if($type) {
|
|
1111
|
global $config;
|
|
1112
|
|
|
1113
|
/* initialize variables */
|
|
1114
|
$iface_list = array();
|
|
1115
|
$max = ($type == 'tun') ? 17 : 4;
|
|
1116
|
|
|
1117
|
/* construct list of valid interfaces */
|
|
1118
|
for ($i = 0; $i < $max ; $i++)
|
|
1119
|
array_push($iface_list, $type . $i);
|
|
1120
|
|
|
1121
|
/* delete interface in use from the list */
|
|
1122
|
if ($a_server = $config['ovpn']['server']['tunnel']) {
|
|
1123
|
foreach ($a_server as $server) {
|
|
1124
|
$entry = array();
|
|
1125
|
array_push($entry, $server['tun_iface']);
|
|
1126
|
$iface_list = array_diff($iface_list, $entry);
|
|
1127
|
}
|
|
1128
|
}
|
|
1129
|
|
|
1130
|
/* same for list of client tunnels */
|
|
1131
|
if ($a_client = $config['ovpn']['client']['tunnel']) {
|
|
1132
|
foreach ($a_client as $client) {
|
|
1133
|
$entry = array();
|
|
1134
|
array_push($entry, $client['if']);
|
|
1135
|
$iface_list = array_diff($iface_list, $entry);
|
|
1136
|
}
|
|
1137
|
}
|
|
1138
|
|
|
1139
|
/* return first element of list, if list of interfaces isn't empty */
|
|
1140
|
if (count($iface_list))
|
|
1141
|
return array_shift($iface_list);
|
|
1142
|
else
|
|
1143
|
return false;
|
|
1144
|
}
|
|
1145
|
|
|
1146
|
/* find the next best available port */
|
|
1147
|
function getnxt_port() {
|
|
1148
|
|
|
1149
|
/* construct list of valid ports */
|
|
1150
|
$port_list = free_port_list();
|
|
1151
|
|
|
1152
|
/* return first element of list, if list of ports isn't empty */
|
|
1153
|
if (count($port_list))
|
|
1154
|
return array_shift($port_list);
|
|
1155
|
else
|
|
1156
|
return false;
|
|
1157
|
}
|
|
1158
|
|
|
1159
|
/* construct list of free ports */
|
|
1160
|
function free_port_list() {
|
|
1161
|
global $config;
|
|
1162
|
|
|
1163
|
/* initialize variables */
|
|
1164
|
$port_list = array();
|
|
1165
|
$first_port = 1194;
|
|
1166
|
$max = $first_port + 21;
|
|
1167
|
|
|
1168
|
for ($i = $first_port; $i < $max; $i++)
|
|
1169
|
array_push($port_list, $i);
|
|
1170
|
|
|
1171
|
/* delete port in use from the list */
|
|
1172
|
if ($a_server = $config['ovpn']['server']['tunnel']) {
|
|
1173
|
foreach ($a_server as $server) {
|
|
1174
|
$entry = array();
|
|
1175
|
array_push($entry, $server['port']);
|
|
1176
|
$port_list = array_diff($port_list, $entry);
|
|
1177
|
}
|
|
1178
|
}
|
|
1179
|
|
|
1180
|
/* same for list of client tunnels */
|
|
1181
|
if ($a_client = $config['ovpn']['client']['tunnel']) {
|
|
1182
|
foreach ($a_client as $client) {
|
|
1183
|
$entry = array();
|
|
1184
|
array_push($entry, $client['cport']);
|
|
1185
|
$port_list = array_diff($port_list, $entry);
|
|
1186
|
}
|
|
1187
|
}
|
|
1188
|
|
|
1189
|
return $port_list;
|
|
1190
|
}
|
|
1191
|
|
|
1192
|
/* construct list of used ports */
|
|
1193
|
function used_port_list() {
|
|
1194
|
global $config;
|
|
1195
|
|
|
1196
|
/* initialize variables */
|
|
1197
|
$port_list = array();
|
|
1198
|
|
|
1199
|
/* add used ports to the list */
|
|
1200
|
if ($a_server = $config['ovpn']['server']['tunnel']) {
|
|
1201
|
foreach ($a_server as $server) {
|
|
1202
|
if (isset($server['enable']))
|
|
1203
|
array_push($port_list, $server['port']);
|
|
1204
|
}
|
|
1205
|
}
|
|
1206
|
|
|
1207
|
/* same for list of client tunnels */
|
|
1208
|
if ($a_client = $config['ovpn']['client']['tunnel']) {
|
|
1209
|
foreach ($a_client as $client) {
|
|
1210
|
if (isset($client['enable']))
|
|
1211
|
array_push($port_list, $client['cport']);
|
|
1212
|
}
|
|
1213
|
}
|
|
1214
|
|
|
1215
|
return $port_list;
|
|
1216
|
}
|
|
1217
|
|
|
1218
|
/* construct list of bindings used for a specified port */
|
|
1219
|
function used_bind_list($port) {
|
|
1220
|
global $config;
|
|
1221
|
|
|
1222
|
/* initialize variables */
|
|
1223
|
$bind_list = array();
|
|
1224
|
|
|
1225
|
/* add used bindings to the list */
|
|
1226
|
if ($a_server = $config['ovpn']['server']['tunnel']) {
|
|
1227
|
foreach ($a_server as $server) {
|
|
1228
|
if (isset($server['enable']) && $server['port'] == $port)
|
|
1229
|
array_push($bind_list, $server['bind_iface']);
|
|
1230
|
}
|
|
1231
|
}
|
|
1232
|
|
|
1233
|
/* client daemon always binds to 0.0.0.0 */
|
|
1234
|
if ($a_client = $config['ovpn']['client']['tunnel']) {
|
|
1235
|
foreach ($a_client as $client) {
|
|
1236
|
if (isset($client['enable']) && $client['cport'] == $port)
|
|
1237
|
array_push($bind_list, "all");
|
|
1238
|
}
|
|
1239
|
}
|
|
1240
|
|
|
1241
|
/* return list of bindings */
|
|
1242
|
return $bind_list;
|
|
1243
|
}
|
|
1244
|
|
|
1245
|
/* Calculate the last address in a range given the start and /prefix */
|
|
1246
|
function ovpn_calc_end($start, $prefix){
|
|
1247
|
$first = ip2long($start);
|
|
1248
|
$last = pow(2,(32 - $prefix)) - 1 + $first;
|
|
1249
|
return long2ip($last);
|
|
1250
|
}
|
|
1251
|
|
|
1252
|
/* Calculate a mask given a /prefix */
|
|
1253
|
function ovpn_calc_mask($prefix){
|
|
1254
|
return long2ip(ip2long("255.255.255.255") - (pow( 2, (32 - $prefix)) - 1));
|
|
1255
|
}
|
|
1256
|
|
|
1257
|
/* Port in use */
|
|
1258
|
function ovpn_port_inuse_server($port){
|
|
1259
|
global $config;
|
|
1260
|
if ($a_server = $config['ovpn']['server']['tunnel']) {
|
|
1261
|
foreach ($a_server as $server) {
|
|
1262
|
if ($server['port'] == $port) {
|
|
1263
|
return true;
|
|
1264
|
}
|
|
1265
|
}
|
|
1266
|
}
|
|
1267
|
return false;
|
|
1268
|
}
|
|
1269
|
|
|
1270
|
/* Read in a file from the $_FILES array */
|
|
1271
|
function ovpn_get_file($file){
|
|
1272
|
global $g;
|
|
1273
|
|
|
1274
|
if (!is_uploaded_file($_FILES[$file]['tmp_name'])){
|
|
1275
|
trigger_error("Bad file upload".$_FILES[$file]['error'], E_USER_NOTICE);
|
|
1276
|
return NULL;
|
|
1277
|
}
|
|
1278
|
$contents = file_get_contents($_FILES[$file]['tmp_name']);
|
|
1279
|
return $contents;
|
|
1280
|
}
|
|
1281
|
|
|
1282
|
|
|
1283
|
/* Get the IP address of a specified interface */
|
|
1284
|
function ovpn_get_ip($iface){
|
|
1285
|
global $config;
|
|
1286
|
|
|
1287
|
if ($iface == 'wan')
|
|
1288
|
return get_current_wan_address();
|
|
1289
|
|
|
1290
|
if ($config['interfaces'][$iface]['bridge'])
|
|
1291
|
/* No bridging (yet) */
|
|
1292
|
return false;
|
|
1293
|
return $config['interfaces'][$iface]['ipaddr'];
|
|
1294
|
}
|
|
1295
|
|
|
1296
|
|
|
1297
|
/* Get a list of the cipher options supported by OpenVPN */
|
|
1298
|
function ovpn_get_cipher_list(){
|
|
1299
|
|
|
1300
|
/* exec("/usr/local/sbin/openvpn --show-ciphers", $raw);
|
|
1301
|
print_r ($raw);
|
|
1302
|
|
|
1303
|
$ciphers = preg_grep('/ bit default key /', $raw);
|
|
1304
|
|
|
1305
|
for($i = 0; $i <count($ciphers); $i++){
|
|
1306
|
$tmp = explode(' ',$ciphers[$i]);
|
|
1307
|
$cipher_list["$tmp[0]"] = "{$tmp[0]} ({$tmp[1]} {$tmp[2]})";
|
|
1308
|
}
|
|
1309
|
*/
|
|
1310
|
$cipher_list = array('DES-CBC' => 'DES-CBC (64 bit)',
|
|
1311
|
'RC2-CBC' => 'RC2-CBC (128 bit)',
|
|
1312
|
'DES-EDE-CBC' => 'DES-EDE-CBC (128 bit)',
|
|
1313
|
'DES-EDE3-CBC' => 'DES-EDE3-CBC (192 bit)',
|
|
1314
|
'DESX-CBC' => 'DESX-CBC (192 bit)',
|
|
1315
|
'BF-CBC' => 'BF-CBC (128 bit)',
|
|
1316
|
'RC2-40-CBC' => 'RC2-40-CBC (40 bit)',
|
|
1317
|
'CAST5-CBC' => 'CAST5-CBC (128 bit)',
|
|
1318
|
'RC5-CBC' => 'RC5-CBC (128 bit)',
|
|
1319
|
'RC2-64-CBC' => 'RC2-64-CBC (64 bit)',
|
|
1320
|
'AES-128-CBC' => 'AES-128-CBC (128 bit)',
|
|
1321
|
'AES-192-CBC' => 'AES-192-CBC (192 bit)',
|
|
1322
|
'AES-256-CBC' => 'AES-256-CBC (256 bit)');
|
|
1323
|
return $cipher_list;
|
|
1324
|
}
|
|
1325
|
|
|
1326
|
|
|
1327
|
/* Get optional interface */
|
|
1328
|
/* needs tunneling interface (tun0, tun1, tap0, ...) */
|
|
1329
|
/* returns optional interface name (opt2, opt3, ...) */
|
|
1330
|
function ovpn_get_opt_interface($tun){
|
|
1331
|
global $config;
|
|
1332
|
|
|
1333
|
for ($i = 1; isset($config['interfaces']['opt' . $i]); $i++) {
|
|
1334
|
$ifname = 'opt' . $i;
|
|
1335
|
|
|
1336
|
if (isset($config['interfaces']['opt' . $i]['ovpn']))
|
|
1337
|
if ($config['interfaces'][$ifname]['if'] == "$tun")
|
|
1338
|
return $ifname;
|
|
1339
|
}
|
|
1340
|
/* not found? */
|
|
1341
|
return false;
|
|
1342
|
}
|
|
1343
|
|
|
1344
|
/* Build a list of the current real interfaces */
|
|
1345
|
function ovpn_real_interface_list(){
|
|
1346
|
global $config;
|
|
1347
|
|
|
1348
|
$interfaces = array('all' => 'ALL',
|
|
1349
|
'lan' => 'LAN',
|
|
1350
|
'wan' => 'WAN');
|
|
1351
|
for ($i = 1; isset($config['interfaces']['opt' . $i]); $i++) {
|
|
1352
|
if (isset($config['interfaces']['opt' . $i]['ovpn']))
|
|
1353
|
/* Hide our own interface */
|
|
1354
|
break;
|
|
1355
|
if (isset($config['interfaces']['opt' . $i]['enable']))
|
|
1356
|
$interfaces['opt' . $i] = $config['interfaces']['opt' . $i]['descr'];
|
|
1357
|
}
|
|
1358
|
return $interfaces;
|
|
1359
|
}
|
|
1360
|
|
|
1361
|
/* called by interfaces_opt.php */
|
|
1362
|
function ovpn_ccd_sort() {
|
|
1363
|
global $g, $config;
|
|
1364
|
|
|
1365
|
function ccdcmp($a, $b) {
|
|
1366
|
return strcmp($a['cn'][0], $b['cn'][0]);
|
|
1367
|
}
|
|
1368
|
|
|
1369
|
usort($config['ovpn']['server']['ccd'], "ccdcmp");
|
|
1370
|
|
|
1371
|
}
|
|
1372
|
|
|
1373
|
/* called by interfaces_opt.php */
|
|
1374
|
function ovpn_config_post() {
|
|
1375
|
global $_POST, $optcfg, $pconfig;
|
|
1376
|
|
|
1377
|
unset($input_errors);
|
|
1378
|
|
|
1379
|
/* bridge check */
|
|
1380
|
if ($_POST['bridge'] && strstr($optcfg['if'], "tun"))
|
|
1381
|
$input_errors[] = "Bridging a tun interface isn't possible.";
|
|
1382
|
|
|
1383
|
if (($_POST['enable'] && !isset($optcfg['enable'])) || (!$_POST['enable'] && isset($optcfg['enable'])))
|
|
1384
|
$input_errors[] = "Enabling or disabling a tunneling interface isn't supported on this page.";
|
|
1385
|
|
|
1386
|
if ($_POST['ipaddr'] != $optcfg['ipaddr'])
|
|
1387
|
$input_errors[] = "Changing the IP address of a tunneling interfaces isn't supported on this page.";
|
|
1388
|
|
|
1389
|
if ($_POST['subnet'] != $optcfg['subnet'])
|
|
1390
|
$input_errors[] = "Changing the subnet mask of a tunneling interfaces isn't supported on this page.";
|
|
1391
|
|
|
1392
|
if ($input_errors) {
|
|
1393
|
$pconfig['ipaddr'] = $optcfg['ipaddr'];
|
|
1394
|
$pconfig['subnet'] = $optcfg['subnet'];
|
|
1395
|
$pconfig['bridge'] = $optcfg['bridge'];
|
|
1396
|
$pconfig['enable'] = isset($optcfg['enable']);
|
|
1397
|
}
|
|
1398
|
|
|
1399
|
return $input_errors;
|
|
1400
|
}
|
|
1401
|
|
|
1402
|
function check_bridging($bridge) {
|
|
1403
|
global $config;
|
|
1404
|
unset($input_errors);
|
|
1405
|
|
|
1406
|
/* double bridging? */
|
|
1407
|
for ($i = 1; isset($config['interfaces']['opt' . $i]); $i++) {
|
|
1408
|
if ($i != $index) {
|
|
1409
|
if ($config['interfaces']['opt' . $i]['bridge'] == $bridge) {
|
|
1410
|
$input_errors = "Optional interface {$i} " .
|
|
1411
|
"({$config['interfaces']['opt' . $i]['descr']}) is already bridged to " .
|
|
1412
|
"the specified interface.";
|
|
1413
|
} else if ($config['interfaces']['opt' . $i]['bridge'] == "opt{$index}") {
|
|
1414
|
$input_errors = "Optional interface {$i} " .
|
|
1415
|
"({$config['interfaces']['opt' . $i]['descr']}) is already bridged to " .
|
|
1416
|
"this interface.";
|
|
1417
|
}
|
|
1418
|
}
|
|
1419
|
}
|
|
1420
|
|
|
1421
|
if ($config['interfaces'][$bridge]['bridge'])
|
|
1422
|
$input_errors = "The specified interface is already bridged to another interface.";
|
|
1423
|
|
|
1424
|
return $input_errors;
|
|
1425
|
}
|
|
1426
|
|
|
1427
|
/*
|
|
1428
|
function is_specialnet($net) {
|
|
1429
|
$specialsrcdst = explode(" ", "lan");
|
|
1430
|
|
|
1431
|
if (in_array($net, $specialsrcdst))
|
|
1432
|
return true;
|
|
1433
|
else
|
|
1434
|
return false;
|
|
1435
|
}
|
|
1436
|
*/
|
|
1437
|
|
|
1438
|
|
|
1439
|
/* lock openvpn information, decide that the lock file is stale after
|
|
1440
|
10 seconds */
|
|
1441
|
function ovpn_lock() {
|
|
1442
|
|
|
1443
|
global $g;
|
|
1444
|
|
|
1445
|
$lockfile = "{$g['varrun_path']}/ovpn.lock";
|
|
1446
|
|
|
1447
|
$n = 0;
|
|
1448
|
while ($n < 10) {
|
|
1449
|
/* open the lock file in append mode to avoid race condition */
|
|
1450
|
if ($fd = fopen($lockfile, "x")) {
|
|
1451
|
/* succeeded */
|
|
1452
|
fclose($fd);
|
|
1453
|
return;
|
|
1454
|
} else {
|
|
1455
|
/* file locked, wait and try again */
|
|
1456
|
sleep(1);
|
|
1457
|
$n++;
|
|
1458
|
}
|
|
1459
|
}
|
|
1460
|
}
|
|
1461
|
|
|
1462
|
/* unlock configuration file */
|
|
1463
|
function ovpn_unlock() {
|
|
1464
|
|
|
1465
|
global $g;
|
|
1466
|
|
|
1467
|
$lockfile = "{$g['varrun_path']}/ovpn.lock";
|
|
1468
|
|
|
1469
|
if (file_exists($lockfile))
|
|
1470
|
unlink($lockfile);
|
|
1471
|
}
|
|
1472
|
|
|
1473
|
?>
|