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<?php
/*
vpn_openvpn_crl.php
Copyright (C) 2005 Peter Allgeyer (allgeyer@web.de).
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");
require_once("openvpn.inc");
if (!is_array($config['ovpn']))
$config['ovpn'] = array();
if (!is_array($config['ovpn']['server'])){
$config['ovpn']['server'] = array();
$config['ovpn']['server']['tunnel'] = array();
}
if (!is_array($config['ovpn']['server']['crl']))
$config['ovpn']['server']['crl'] = array();
$ovpncrl = &$config['ovpn']['server']['crl'];
$id = $_GET['id'];
if (isset($_POST['id']))
$id = $_POST['id'];
if ($_POST['apply']) {
$retval = 0;
$retval = ovpn_server_crl_add();
/* remove dirty flag */
unlink_if_exists($d_ovpncrldirty_path);
$savemsg = get_std_save_message($retval);
}
if ($_GET['act'] == "del") {
if ($ovpncrl[$id]) {
$ovpnent = $ovpncrl[$id];
unset($ovpncrl[$id]);
write_config();
/* Remove crl file */
ovpn_server_crl_del($ovpnent['crlname']);
/* we should send a SIGUSR1 to openvpn daemon */
touch($d_ovpncrldirty_path);
header("Location: vpn_openvpn_crl.php");
exit;
}
}
$pgtitle = "VPN: OpenVPN";
include("head.inc");
?>
<?php include("fbegin.inc"); ?>
<body link="#0000CC" vlink="#0000CC" alink="#0000CC">
<p class="pgtitle"><?=$pgtitle?></p>
<?php if ($input_errors) print_input_errors($input_errors); ?>
<?php if (file_exists($d_sysrebootreqd_path) && !file_exists($d_ovpncrldirty_path)) print_info_box(get_std_save_message(0)); ?>
<form action="vpn_openvpn_crl.php" method="post" enctype="multipart/form-data" name="iform" id="iform">
<?php if (file_exists($d_ovpncrldirty_path)): ?><p>
<?php print_info_box_np("OpenVPN CRL files have been changed.<br>You must apply the changes in order for them to take effect.");?>
<?php endif; ?>
<table width="100%" border="0" cellpadding="0" cellspacing="0">
<tr><td>
<?php
$tab_array = array();
$tab_array[] = array("Server", false, "vpn_openvpn_srv.php");
$tab_array[] = array("Client", false, "vpn_openvpn_cli.php");
$tab_array[] = array("Client-specific Configuration", false, "vpn_openvpn_ccd.php");
$tab_array[] = array("CRL", true, "vpn_openvpn_crl.php");
display_top_tabs($tab_array);
?>
</td></tr>
<tr>
<td>
<div id="mainarea">
<table class="tabcont" width="100%" border="0" cellpadding="6" cellspacing="0">
<tr>
<td class="vtable">
<strong><span class="red">WARNING: This feature is experimental and modifies your optional interface configuration.
Backup your configuration before using OpenVPN, and restore it before upgrading.
</span></strong>
</td>
</tr>
</table>
<table class="tabcont" width="100%" border="0" cellpadding="0" cellspacing="0">
<tr>
<td width="40%" class="listhdrr">CRL name</td>
<td width="50%" class="listhdr">Description</td>
<td width="10%" class="list"></td>
</tr>
<?php $i = 0; foreach ($ovpncrl as $crl):
if (!isset($crl['enable'])) {
$spans = "<span class=\"gray\">";
$spane = "</span>";
} else {
$spans = $spane = "";
}
?>
<tr>
<td class="listlr"><?=$spans;?>
<?= $crl['crlname'];?>
<?=$spane;?></td>
<td class="listbg"><?=$spans;?>
<?= htmlspecialchars($crl['descr']);?>
<?=$spane;?></td>
<td valign="middle" nowrap class="list"><a href="vpn_openvpn_crl_edit.php?id=<?=$i;?>"><img src="./themes/<?= $g['theme']; ?>/images/icons/icon_e.gif" title="edit CRL file" width="17" height="17" border="0"></a>
<a href="vpn_openvpn_crl.php?act=del&id=<?=$i;?>" onclick="return confirm('Do you really want to delete this CRL file?')"><img src="./themes/<?= $g['theme']; ?>/images/icons/icon_x.gif" title="delete CRL file" width="17" height="17" border="0"></a></td>
</tr>
<?php $i++; endforeach; ?>
<tr>
<td class="list" colspan="2"> </td>
<td class="list"><a href="vpn_openvpn_crl_edit.php"><img src="./themes/<?= $g['theme']; ?>/images/icons/icon_plus.gif" title="add CRL file" width="17" height="17" border="0"></a></td>
</tr>
<td colspan="4">
<p><span class="vexpl"><span class="red"><strong>Note:</strong></span><br>
A CRL (certificate revocation list) is used when a particular
key is compromised but when the overall PKI is still intact.<br>
<br>
Suppose you had a PKI consisting of a CA, root certificate, and
a number of client certificates. Suppose a laptop computer
containing a client key and certificate was stolen. By adding the
stolen certificate to the CRL file, you could reject any connection
which attempts to use it, while preserving the overall
integrity of the PKI.<br>
<br>
The only time when it would be necessary to rebuild the entire
PKI from scratch would be if the root certificate key itself was
compromised.
</span>
</p>
</td>
</table>
</td>
</tr>
</table>
</form>
<?php include("fend.inc"); ?>
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