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