#!/usr/local/bin/php . All rights reserved. Redistribution and use in source and binary forms, with or without modification, are permitted provided that the following conditions are met: 1. Redistributions of source code must retain the above copyright notice, this list of conditions and the following disclaimer. 2. Redistributions in binary form must reproduce the above copyright notice, this list of conditions and the following disclaimer in the documentation and/or other materials provided with the distribution. THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. */ require("guiconfig.inc"); if (!is_array($config['pptpd']['radius'])) { $config['pptpd']['radius'] = array(); } $pptpcfg = &$config['pptpd']; $pconfig['remoteip'] = $pptpcfg['remoteip']; $pconfig['localip'] = $pptpcfg['localip']; $pconfig['redir'] = $pptpcfg['redir']; $pconfig['mode'] = $pptpcfg['mode']; $pconfig['req128'] = isset($pptpcfg['req128']); $pconfig['radiusenable'] = isset($pptpcfg['radius']['enable']); $pconfig['radacct_enable'] = isset($pptpcfg['radius']['accounting']); $pconfig['radiusserver'] = $pptpcfg['radius']['server']; $pconfig['radiussecret'] = $pptpcfg['radius']['secret']; if ($_POST) { unset($input_errors); $pconfig = $_POST; /* input validation */ if ($_POST['mode'] == "server") { $reqdfields = explode(" ", "localip remoteip"); $reqdfieldsn = explode(",", "Server address,Remote start address"); if ($_POST['radiusenable']) { $reqdfields = array_merge($reqdfields, explode(" ", "radiusserver radiussecret")); $reqdfieldsn = array_merge($reqdfieldsn, explode(",", "RADIUS server address,RADIUS shared secret")); } do_input_validation($_POST, $reqdfields, $reqdfieldsn, &$input_errors); if (($_POST['localip'] && !is_ipaddr($_POST['localip']))) { $input_errors[] = "A valid server address must be specified."; } if (($_POST['subnet'] && !is_ipaddr($_POST['remoteip']))) { $input_errors[] = "A valid remote start address must be specified."; } if (($_POST['radiusserver'] && !is_ipaddr($_POST['radiusserver']))) { $input_errors[] = "A valid RADIUS server address must be specified."; } if (!$input_errors) { $_POST['remoteip'] = $pconfig['remoteip'] = gen_subnet($_POST['remoteip'], $g['pptp_subnet']); $subnet_start = ip2long($_POST['remoteip']); $subnet_end = ip2long($_POST['remoteip']) + $g['n_pptp_units'] - 1; if ((ip2long($_POST['localip']) >= $subnet_start) && (ip2long($_POST['localip']) <= $subnet_end)) { $input_errors[] = "The specified server address lies in the remote subnet."; } if ($_POST['localip'] == $config['interfaces']['lan']['ipaddr']) { $input_errors[] = "The specified server address is equal to the LAN interface address."; } } } else if ($_POST['mode'] == "redir") { $reqdfields = explode(" ", "redir"); $reqdfieldsn = explode(",", "PPTP redirection target address"); do_input_validation($_POST, $reqdfields, $reqdfieldsn, &$input_errors); if (($_POST['redir'] && !is_ipaddr($_POST['redir']))) { $input_errors[] = "A valid target address must be specified."; } } if (!$input_errors) { $pptpcfg['remoteip'] = $_POST['remoteip']; $pptpcfg['redir'] = $_POST['redir']; $pptpcfg['localip'] = $_POST['localip']; $pptpcfg['mode'] = $_POST['mode']; $pptpcfg['req128'] = $_POST['req128'] ? true : false; $pptpcfg['radius']['enable'] = $_POST['radiusenable'] ? true : false; $pptpcfg['radius']['accounting'] = $_POST['radacct_enable'] ? true : false; $pptpcfg['radius']['server'] = $_POST['radiusserver']; $pptpcfg['radius']['secret'] = $_POST['radiussecret']; if (($pconfig['mode'] == "server")) { /* * traverse ruleset. if no PPTP rule is found * install one. */ $found_pptp_rule = 0; foreach($config['filter']['rule'] as $rule) { $pos = strpos($rule['descr'], "PPTP"); if ( $pos <> false ) $found_pptp_rule = 1; } if($found_pptp_rule == 0) { /* no PPTP rule found. craete one. */ add_default_pptp_rule(); } } write_config(); $retval = 0; if (!file_exists($d_sysrebootreqd_path)) { config_lock(); $retval = vpn_pptpd_configure(); config_unlock(); } $savemsg = get_std_save_message($retval); if($found_pptp_rule ==0) $savemsg .= "
A default PPTP rule has been added to the firewall rules section."; } } ?> <?=gentitle("VPN: PPTP");?>

VPN: PPTP

  > Off
  > Redirect incoming PPTP connections to:
PPTP redirection
Enter the IP address of a host which will accept incoming PPTP connections.
  > Enable PPTP server
Max. concurrent connections
Server address
Enter the IP address the PPTP server should use on its side for all clients.
Remote address range /
Specify the starting address for the client IP address subnet.
The PPTP server will assign addresses, starting at the address entered above, to clients.
RADIUS

> Use a RADIUS server for authentication
When set, all users will be authenticated using the RADIUS server specified below. The local user database will not be used.

> Enable RADIUS accounting
Sends accounting packets to the RADIUS server.

RADIUS server


Enter the IP address of the RADIUS server.
RADIUS shared secret


Enter the shared secret that will be used to authenticate to the RADIUS server.
  > Require 128-bit encryption
When set, 128-bit encryption will be accepted. Otherwise, 40-bit and 56-bit encryption will be accepted, too. Note that encryption will always be forced on PPTP connections (i.e. unencrypted connections will not be accepted).
 
  Note:
don't forget to add a firewall rule to permit traffic from PPTP clients!
any"; $a_filter[] = $filterent; write_config(); } function pconfig_to_address(&$adr, $padr, $pmask, $pnot, $pbeginport, $pendport) { $adr = array(); if ($padr == "any") $adr['any'] = true; else if (is_specialnet($padr)) $adr['network'] = $padr; else { $adr['address'] = $padr; if ($pmask != 32) $adr['address'] .= "/" . $pmask; } $adr['not'] = $pnot ? true : false; if (($pbeginport != 0) && ($pbeginport != "any")) { if ($pbeginport != $pendport) $adr['port'] = $pbeginport . "-" . $pendport; else $adr['port'] = $pbeginport; } } ?>