pfSense

#!/usr/local/bin/php

<?php 

/* $Id$ */

/*

	services_dhcp.php

	part of m0n0wall (http://m0n0.ch/wall)

	Copyright (C) 2003-2004 Manuel Kasper <mk@neon1.net>.

	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 = $_GET['if'];

if ($_POST['if'])

	$if = $_POST['if'];

$iflist = array("lan" => "LAN");

for ($i = 1; isset($config['interfaces']['opt' . $i]); $i++) {

	$oc = $config['interfaces']['opt' . $i];

	if (isset($oc['enable']) && $oc['if'] && (!$oc['bridge'])) {

		$iflist['opt' . $i] = $oc['descr'];

	}

}

if (!$if || !isset($iflist[$if]))

	$if = "lan";

$pconfig['range_from'] = $config['dhcpd'][$if]['range']['from'];

$pconfig['range_to'] = $config['dhcpd'][$if]['range']['to'];

$pconfig['deftime'] = $config['dhcpd'][$if]['defaultleasetime'];

$pconfig['maxtime'] = $config['dhcpd'][$if]['maxleasetime'];

list($pconfig['wins1'],$pconfig['wins2']) = $config['dhcpd'][$if]['winsserver'];

$pconfig['enable'] = isset($config['dhcpd'][$if]['enable']);

$pconfig['denyunknown'] = isset($config['dhcpd'][$if]['denyunknown']);

$pconfig['staticarp'] = isset($config['dhcpd'][$if]['staticarp']);

$ifcfg = $config['interfaces'][$if];

if (!is_array($config['dhcpd'][$if]['staticmap'])) {

	$config['dhcpd'][$if]['staticmap'] = array();

}

staticmaps_sort($if);

$a_maps = &$config['dhcpd'][$if]['staticmap'];

if ($_POST) {

	unset($input_errors);

	$pconfig = $_POST;

	/* input validation */

	if ($_POST['enable']) {

		$reqdfields = explode(" ", "range_from range_to");

		$reqdfieldsn = explode(",", "Range begin,Range end");

		do_input_validation($_POST, $reqdfields, $reqdfieldsn, &$input_errors);

		if (($_POST['range_from'] && !is_ipaddr($_POST['range_from']))) {

			$input_errors[] = "A valid range must be specified.";

		}

		if (($_POST['range_to'] && !is_ipaddr($_POST['range_to']))) {

			$input_errors[] = "A valid range must be specified.";

		}

		if (($_POST['gateway'] && !is_ipaddr($_POST['gateway'])))

			$input_errors[] = "A valid IP address must be specified for the gateway.";

		if (($_POST['wins1'] && !is_ipaddr($_POST['wins1'])) || ($_POST['wins2'] && !is_ipaddr($_POST['wins2']))) {

			$input_errors[] = "A valid IP address must be specified for the primary/secondary WINS server.";

		}

		if ($_POST['deftime'] && (!is_numeric($_POST['deftime']) || ($_POST['deftime'] < 60))) {

			$input_errors[] = "The default lease time must be at least 60 seconds.";

		}

		if ($_POST['maxtime'] && (!is_numeric($_POST['maxtime']) || ($_POST['maxtime'] < 60) || ($_POST['maxtime'] <= $_POST['deftime']))) {

			$input_errors[] = "The maximum lease time must be at least 60 seconds and higher than the default lease time.";

		}

		if (!$input_errors) {

			/* make sure the range lies within the current subnet */

			$subnet_start = (ip2long($ifcfg['ipaddr']) & gen_subnet_mask_long($ifcfg['subnet']));

			$subnet_end = (ip2long($ifcfg['ipaddr']) | (~gen_subnet_mask_long($ifcfg['subnet'])));

			if ((ip2long($_POST['range_from']) < $subnet_start) || (ip2long($_POST['range_from']) > $subnet_end) ||

			    (ip2long($_POST['range_to']) < $subnet_start) || (ip2long($_POST['range_to']) > $subnet_end)) {

				$input_errors[] = "The specified range lies outside of the current subnet.";	

			}

			if (ip2long($_POST['range_from']) > ip2long($_POST['range_to']))

				$input_errors[] = "The range is invalid (first element higher than second element).";

			/* make sure that the DHCP Relay isn't enabled on this interface */

			if (isset($config['dhcrelay'][$if]['enable']))

				$input_errors[] = "You must disable the DHCP relay on the {$iflist[$if]} interface before enabling the DHCP server.";

		}

	}

	if (!$input_errors) {

		$config['dhcpd'][$if]['range']['from'] = $_POST['range_from'];

		$config['dhcpd'][$if]['range']['to'] = $_POST['range_to'];

		$config['dhcpd'][$if]['defaultleasetime'] = $_POST['deftime'];

		$config['dhcpd'][$if]['maxleasetime'] = $_POST['maxtime'];

		$config['dhcpd'][$if]['enable'] = $_POST['enable'] ? true : false;

		$config['dhcpd'][$if]['denyunknown'] = $_POST['denyunknown'] ? true : false;

		unset($config['dhcpd'][$if]['winsserver']);

		if ($_POST['wins1'])

			$config['dhcpd'][$if]['winsserver'][] = $_POST['wins1'];

		if ($_POST['wins2'])

			$config['dhcpd'][$if]['winsserver'][] = $_POST['wins2'];

		$config['dhcpd'][$if]['gateway'] = $_POST['gateway'];

		$config['dhcpd'][$if]['staticarp'] = $_POST['staticarp'] ? true : false;

		write_config();

		/* static arp configuration */

                if (isset($config['dhcpd'][$if]['staticarp']))

			interfaces_staticarp_configure($if);

		$retval = 0;

		if (!file_exists($d_sysrebootreqd_path)) {

			config_lock();

			$retval = services_dhcpd_configure();

			config_unlock();

		}

		$savemsg = get_std_save_message($retval);

		if ($retval == 0) {

			if (file_exists($d_staticmapsdirty_path))

				unlink($d_staticmapsdirty_path);

		}

	}

}

if ($_GET['act'] == "del") {

	if ($a_maps[$_GET['id']]) {

		unset($a_maps[$_GET['id']]);

		write_config();

		touch($d_staticmapsdirty_path);

		header("Location: services_dhcp.php?if={$if}");

		exit;

	}

}

?>

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">

<html>

<head>

<title><?=gentitle("Services: DHCP server");?></title>

<meta http-equiv="Content-Type" content="text/html; charset=iso-8859-1">

<link href="gui.css" rel="stylesheet" type="text/css">

<script language="JavaScript">

<!--

function enable_change(enable_over) {

	var endis;

	endis = !(document.iform.enable.checked || enable_over);

	document.iform.range_from.disabled = endis;

	document.iform.range_to.disabled = endis;

	document.iform.wins1.disabled = endis;

	document.iform.wins2.disabled = endis;

	document.iform.deftime.disabled = endis;

	document.iform.maxtime.disabled = endis;

	document.iform.gateway.disabled = endis;

}

//-->

</script>

</head>

<body link="#0000CC" vlink="#0000CC" alink="#0000CC">

<?php include("fbegin.inc"); ?>

<p class="pgtitle">Services: DHCP server</p>

<form action="services_dhcp.php" method="post" name="iform" id="iform">

<?php if ($input_errors) print_input_errors($input_errors); ?>

<?php if ($savemsg) print_info_box($savemsg); ?>

<?php if (file_exists($d_staticmapsdirty_path)): ?><p>

<?php print_info_box_np("The static mapping configuration has been changed.<br>You must apply the changes in order for them to take effect.");?><br>

<input name="apply" type="submit" class="formbtn" id="apply" value="Apply changes"></p>

<?php endif; ?>

<table width="100%" border="0" cellpadding="0" cellspacing="0">

  <tr><td>

  <ul id="tabnav">

<?php foreach ($iflist as $ifent => $ifname):

	if ($ifent == $if): ?>

    <li class="tabact"><?=htmlspecialchars($ifname);?></li>

<?php else: ?>

    <li class="tabinact"><a href="services_dhcp.php?if=<?=$ifent;?>"><?=htmlspecialchars($ifname);?></a></li>

<?php endif; ?>

<?php endforeach; ?>

  </ul>

  </td></tr>

  <tr> 

    <td class="tabcont">

              <table width="100%" border="0" cellpadding="6" cellspacing="0">

                      <tr> 

                        <td width="22%" valign="top" class="vtable">&nbsp;</td>

                        <td width="78%" class="vtable">

<input name="enable" type="checkbox" value="yes" <?php if ($pconfig['enable']) echo "checked"; ?> onClick="enable_change(false)">

                          <strong>Enable DHCP server on 

                          <?=htmlspecialchars($iflist[$if]);?>

                          interface</strong></td>

                      </tr>

				  <tr>

	              <td width="22%" valign="top" class="vtable">&nbsp;</td>

                      <td width="78%" class="vtable">

<input name="denyunknown" type="checkbox" value="yes" <?php if ($pconfig['denyunknown']) echo "checked"; ?>>

                      <strong>Deny unknown clients</strong><br>

                      If this is checked, only the clients defined below will get DHCP leases from this server. </td>

		      		  </tr>

                      <tr> 

                        <td width="22%" valign="top" class="vncellreq">Subnet</td>

                        <td width="78%" class="vtable"> 

                          <?=gen_subnet($ifcfg['ipaddr'], $ifcfg['subnet']);?>

                        </td>

                      </tr>

                      <tr> 

                        <td width="22%" valign="top" class="vncellreq">Subnet 

                          mask</td>

                        <td width="78%" class="vtable"> 

                          <?=gen_subnet_mask($ifcfg['subnet']);?>

                        </td>

                      </tr>

                      <tr> 

                        <td width="22%" valign="top" class="vncellreq">Available 

                          range</td>

                        <td width="78%" class="vtable"> 

                          <?=long2ip(ip2long($ifcfg['ipaddr']) & gen_subnet_mask_long($ifcfg['subnet']));?>

                          - 

                          <?=long2ip(ip2long($ifcfg['ipaddr']) | (~gen_subnet_mask_long($ifcfg['subnet']))); ?>

                        </td>

                      </tr>

                      <tr> 

                        <td width="22%" valign="top" class="vncellreq">Range</td>

                        <td width="78%" class="vtable"> 

                          <input name="range_from" type="text" class="formfld" id="range_from" size="20" value="<?=htmlspecialchars($pconfig['range_from']);?>"> 

                          &nbsp;to&nbsp; <input name="range_to" type="text" class="formfld" id="range_to" size="20" value="<?=htmlspecialchars($pconfig['range_to']);?>"></td>

                      </tr>

                      <tr> 

                        <td width="22%" valign="top" class="vncell">WINS servers</td>

                        <td width="78%" class="vtable"> 

                          <input name="wins1" type="text" class="formfld" id="wins1" size="20" value="<?=htmlspecialchars($pconfig['wins1']);?>"><br>

                          <input name="wins2" type="text" class="formfld" id="wins2" size="20" value="<?=htmlspecialchars($pconfig['wins2']);?>"></td>

                      </tr>

                     <tr> 

                       <td width="22%" valign="top" class="vncell">Gateway</td>

                       <td width="78%" class="vtable"> 

                         <input name="gateway" type="text" class="formfld" id="gateway" size="20" value="<?=htmlspecialchars($pconfig['gateway']);?>"><br>

The default is to use the IP of the firewall as the gateway.  Specify an alternate gateway here if this is not the correct gateway for your network.

                      </tr>

                      <tr> 

                        <td width="22%" valign="top" class="vncell">Default lease 

                          time</td>

                        <td width="78%" class="vtable"> 

                          <input name="deftime" type="text" class="formfld" id="deftime" size="10" value="<?=htmlspecialchars($pconfig['deftime']);?>">

                          seconds<br>

                          This is used for clients that do not ask for a specific 

                          expiration time.<br>

                          The default is 7200 seconds.</td>

                      </tr>

                      <tr> 

                        <td width="22%" valign="top" class="vncell">Maximum lease 

                          time</td>

                        <td width="78%" class="vtable"> 

                          <input name="maxtime" type="text" class="formfld" id="maxtime" size="10" value="<?=htmlspecialchars($pconfig['maxtime']);?>">

                          seconds<br>

                          This is the maximum lease time for clients that ask 

                          for a specific expiration time.<br>

                          The default is 86400 seconds.</td>

                      </tr>

                      <tr>

                        <td width="22%" valign="top" class="vncell">Static ARP</td>

                        <td width="78%" class="vtable"><input type="checkbox" value="yes" name="staticarp" id="staticarp" <?php if($pconfig['staticarp']) echo " checked"; ?>>&nbsp; <b>Enable Static ARP entries</b><br>

<span class="red"><strong>Note:</strong></span> This feature is under development.  Only the machines listed below will be able to communicate with the firewall on this NIC.  Disabling this has been tested to be broken, a reboot will be required to disable.  Be warned!</td>

                      </tr>

                      <tr> 

                        <td width="22%" valign="top">&nbsp;</td>

                        <td width="78%"> 

                          <input name="if" type="hidden" value="<?=$if;?>"> 

                          <input name="Submit" type="submit" class="formbtn" value="Save" onclick="enable_change(true)"> 

                        </td>

                      </tr>

                      <tr> 

                        <td width="22%" valign="top">&nbsp;</td>

                        <td width="78%"> <p><span class="vexpl"><span class="red"><strong>Note:<br>

                            </strong></span>The DNS servers entered in <a href="system.php">System: 

                            General setup</a> (or the <a href="services_dnsmasq.php">DNS 

                            forwarder</a>, if enabled) </span><span class="vexpl">will 

                            be assigned to clients by the DHCP server.<br>

                            <br>

                            The DHCP lease table can be viewed on the <a href="diag_dhcp_leases.php">Diagnostics: 

                            DHCP leases</a> page.<br>

                            </span></p></td>

                      </tr>

                    </table>

              <table width="100%" border="0" cellpadding="0" cellspacing="0">

                <tr>

                  <td width="35%" class="listhdrr">MAC address </td>

                  <td width="20%" class="listhdrr">IP address</td>

                  <td width="35%" class="listhdr">Description</td>

                  <td width="10%" class="list"></td>

				</tr>

			  <?php $i = 0; foreach ($a_maps as $mapent): ?>

                <tr>

                  <td class="listlr">

                    <?=htmlspecialchars($mapent['mac']);?>

                  </td>

                  <td class="listr">

                    <?=htmlspecialchars($mapent['ipaddr']);?>&nbsp;

                  </td>

                  <td class="listbg">

                    <?=htmlspecialchars($mapent['descr']);?>&nbsp;

                  </td>

                  <td valign="middle" nowrap class="list"> <a href="services_dhcp_edit.php?if=<?=$if;?>&id=<?=$i;?>"><img src="e.gif" width="17" height="17" border="0"></a>

                     &nbsp;<a href="services_dhcp.php?if=<?=$if;?>&act=del&id=<?=$i;?>" onclick="return confirm('Do you really want to delete this mapping?')"><img src="x.gif" width="17" height="17" border="0"></a></td>

				</tr>

			  <?php $i++; endforeach; ?>

                <tr> 

                  <td class="list" colspan="3"></td>

                  <td class="list"> <a href="services_dhcp_edit.php?if=<?=$if;?>"><img src="plus.gif" width="17" height="17" border="0"></a></td>

				</tr>

              </table>

    </td>

  </tr>

</table>

</form>

<script language="JavaScript">

<!--

enable_change(false);

//-->

</script>

<?php include("fend.inc"); ?>

</body>

</html>