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5b237745
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Scott Ullrich
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#!/usr/local/bin/php
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de3fa7a6
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Scott Ullrich
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<?php
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b46bfcf5
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Bill Marquette
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/* $Id$ */
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5b237745
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Scott Ullrich
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/*
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services_dhcp.php
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part of m0n0wall (http://m0n0.ch/wall)
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de3fa7a6
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Scott Ullrich
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5b237745
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Scott Ullrich
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Copyright (C) 2003-2004 Justin Ellison <justin@techadvise.com>.
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All rights reserved.
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de3fa7a6
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Scott Ullrich
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5b237745
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Scott Ullrich
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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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de3fa7a6
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Scott Ullrich
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5b237745
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Scott Ullrich
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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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de3fa7a6
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Scott Ullrich
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5b237745
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Scott Ullrich
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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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de3fa7a6
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Scott Ullrich
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5b237745
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Scott Ullrich
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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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function get_wan_dhcp_server() {
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global $config, $g;
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$dhclientfn = $g['vardb_path'] . "/dhclient.leases";
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$leases = file($dhclientfn);
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/* Start at the end, work backwards finding the latest lease for the WAN */
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for ($i = (count($leases)-1); $i >= 0; $i--) {
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if ($leases[$i] == "}") {
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unset($iface);
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unset($dhcpserver);
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} elseif (strstr($leases[$i],"interface")) {
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preg_match("/\s+interface \"(\w+)\";/",$leases[$i],$iface);
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} elseif (strstr($leases[$i],"dhcp-server-identifier")) {
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preg_match("/\s+dhcp-server-identifier (\d+\.\d+\.\d+\.\d+);/",$leases[$i],$dhcpserver);
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}
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if ($iface == $config['interfaces']['wan'] && isset($dhcpserver)) {
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break;
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}
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}
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Scott Ullrich
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return $dhcpserver[1];
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}
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require("guiconfig.inc");
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$if = $_GET['if'];
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if ($_POST['if'])
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$if = $_POST['if'];
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de3fa7a6
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Scott Ullrich
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$iflist = array("lan" => "LAN");
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for ($i = 1; isset($config['interfaces']['opt' . $i]); $i++) {
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$oc = $config['interfaces']['opt' . $i];
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de3fa7a6
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Scott Ullrich
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if (isset($oc['enable']) && $oc['if'] && (!$oc['bridge'])) {
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$iflist['opt' . $i] = $oc['descr'];
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}
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}
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if (!$if || !isset($iflist[$if]))
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$if = "lan";
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$pconfig['enable'] = isset($config['dhcrelay'][$if]['enable']);
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$pconfig['server'] = $config['dhcrelay']['server'];
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$pconfig['proxydhcp'] = isset($config['dhcrelay']['proxydhcp']);
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$pconfig['agentoption'] = isset($config['dhcrelay']['agentoption']);
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$ifcfg = $config['interfaces'][$if];
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if ($_POST) {
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unset($input_errors);
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$pconfig = $_POST;
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/* input validation */
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if ($_POST['enable']) {
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if (isset($_POST['proxydhcp']))
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$_POST['server'] = get_wan_dhcp_server();
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$reqdfields = explode(" ", "server");
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$reqdfieldsn = explode(",", "Destination Server");
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de3fa7a6
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Scott Ullrich
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do_input_validation($_POST, $reqdfields, $reqdfieldsn, &$input_errors);
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Scott Ullrich
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if (($_POST['server'] && !is_ipaddr($_POST['server'])))
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$input_errors[] = "A valid Destination Server IP address must be specified.";
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Scott Ullrich
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5b237745
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Scott Ullrich
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if (!$input_errors) {
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/* make sure that the DHCP server isn't enabled on this interface */
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Scott Ullrich
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if (isset($config['dhcpd'][$if]['enable']))
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5b237745
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Scott Ullrich
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$input_errors[] = "You must disable the DHCP server on the {$iflist[$if]} interface before enabling the DHCP Relay.";
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/* make sure that the DHCP server isn't running on any of the implied interfaces */
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foreach ($config['interfaces'] as $ifname => $ifcfg) {
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$subnet = $ifcfg['ipaddr'] . "/" . $ifcfg['subnet'];
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de3fa7a6
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Scott Ullrich
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if (ip_in_subnet($_POST['server'],$subnet))
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$destif = $ifname;
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}
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if (!isset($destif))
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5b237745
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Scott Ullrich
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$destif = "wan";
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Scott Ullrich
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if (isset($config['dhcpd'][$destif]['enable']))
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$input_errors[] = "You must disable the DHCP server on the {$destif} interface before enabling the DHCP Relay.";
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de3fa7a6
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Scott Ullrich
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5b237745
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Scott Ullrich
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/* if proxydhcp is selected, make sure DHCP is enabled on WAN */
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if (isset($config['dhcrelay']['proxydhcp']) && $config['interfaces']['wan']['ipaddr'] != "dhcp")
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$input_errors[] = "You must have DHCP active on the WAN interface before enabling the DHCP proxy option.";
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}
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}
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if (!$input_errors) {
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$config['dhcrelay']['agentoption'] = $_POST['agentoption'] ? true : false;
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$config['dhcrelay']['proxydhcp'] = $_POST['proxydhcp'] ? true : false;
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$config['dhcrelay']['server'] = $_POST['server'];
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$config['dhcrelay'][$if]['enable'] = $_POST['enable'] ? true : false;
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de3fa7a6
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Scott Ullrich
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5b237745
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write_config();
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de3fa7a6
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Scott Ullrich
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$retval = 0;
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config_lock();
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$retval = services_dhcrelay_configure();
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config_unlock();
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5b237745
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$savemsg = get_std_save_message($retval);
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5b237745
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Scott Ullrich
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}
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}
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4df96eff
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Scott Ullrich
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$pgtitle = "Services: DHCP Relay";
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include("head.inc");
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5b237745
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Scott Ullrich
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?>
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4df96eff
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Scott Ullrich
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Scott Ullrich
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<script language="JavaScript">
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<!--
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function enable_change(enable_over) {
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if (document.iform.enable.checked || enable_over) {
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document.iform.server.disabled = 0;
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document.iform.agentoption.disabled = 0;
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document.iform.proxydhcp.disabled = 0;
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} else {
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document.iform.server.disabled = 1;
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document.iform.agentoption.disabled = 1;
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document.iform.proxydhcp.disabled = 1;
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}
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if (document.iform.proxydhcp.checked) {
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document.iform.server.disabled = 1;
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}
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}
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//-->
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</script>
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4df96eff
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<body link="#0000CC" vlink="#0000CC" alink="#0000CC">
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<?php include("fbegin.inc"); ?>
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74f446e8
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Bill Marquette
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<p class="pgtitle"><?=$pgtitle?></p>
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5b237745
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Scott Ullrich
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<form action="services_dhcp_relay.php" method="post" name="iform" id="iform">
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<?php if ($input_errors) print_input_errors($input_errors); ?>
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<?php if ($savemsg) print_info_box($savemsg); ?>
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<table width="100%" border="0" cellpadding="0" cellspacing="0">
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e2aa3617
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Scott Ullrich
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<tr><td>
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<?php
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/* active tabs */
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$tab_array = array();
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$tabscounter = 0;
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$i = 0;
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foreach ($iflist as $ifent => $ifname) {
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if ($ifent == $if)
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$active = true;
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else
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$active = false;
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$tab_array[] = array($ifname, $active, "services_dhcp_relay.php?if={$ifent}");
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}
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display_top_tabs($tab_array);
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?>
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5b237745
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Scott Ullrich
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</td></tr>
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Scott Ullrich
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<tr>
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d732f186
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Bill Marquette
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<td>
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<div id="mainarea">
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<table class="tabcont" width="100%" border="0" cellpadding="6" cellspacing="0">
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Scott Ullrich
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<tr>
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5b237745
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Scott Ullrich
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<td width="22%" valign="top" class="vtable"> </td>
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<td width="78%" class="vtable">
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<input name="enable" type="checkbox" value="yes" <?php if ($pconfig['enable']) echo "checked"; ?> onClick="enable_change(false)">
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de3fa7a6
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Scott Ullrich
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<strong>Enable DHCP relay on
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5b237745
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Scott Ullrich
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<?=htmlspecialchars($iflist[$if]);?>
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interface</strong></td>
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</tr>
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<tr>
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<td width="22%" valign="top" class="vtable"> </td>
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<td width="78%" class="vtable">
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<input name="agentoption" type="checkbox" value="yes" <?php if ($pconfig['agentoption']) echo "checked"; ?>>
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<strong>Append circuit ID and agent ID to requests</strong><br>
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If this is checked, the DHCP relay will append the circuit ID (pfSense interface number) and the agent ID to the DHCP request.</td>
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Scott Ullrich
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</tr>
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<tr>
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5b237745
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<td width="22%" valign="top" class="vncell">Destination server</td>
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de3fa7a6
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Scott Ullrich
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<td width="78%" class="vtable">
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5b237745
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Scott Ullrich
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<input name="proxydhcp" type="checkbox" value="yes" <?php if ($pconfig['proxydhcp']) echo "checked"; ?> onClick="enable_change(false)"> Proxy requests to DHCP server on WAN subnet
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<br><br><input name="server" type="text" class="formfld" id="server" size="20" value="<?=htmlspecialchars($pconfig['server']);?>">
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<br>
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This is the IP address of the server to which the DHCP packet is relayed. Select "Proxy requests to DHCP server on WAN subnet" to relay DHCP packets to the server that was used on the WAN interface.
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</td>
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</tr>
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de3fa7a6
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Scott Ullrich
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<tr>
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5b237745
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Scott Ullrich
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<td width="22%" valign="top"> </td>
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de3fa7a6
|
Scott Ullrich
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<td width="78%">
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<input name="if" type="hidden" value="<?=$if;?>">
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<input name="Submit" type="submit" class="formbtn" value="Save" onclick="enable_change(true)">
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5b237745
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Scott Ullrich
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</td>
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</tr>
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</table>
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d732f186
|
Bill Marquette
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</div>
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5b237745
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Scott Ullrich
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</td>
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</tr>
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</table>
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</form>
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<script language="JavaScript">
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<!--
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enable_change(false);
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//-->
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</script>
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<?php include("fend.inc"); ?>
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</body>
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</html>
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