<?php
/* $Id$ */
/*
        load_balancer_pool_edit.php
        part of pfSense (http://www.pfsense.com/)

        Copyright (C) 2005 Bill Marquette <bill.marquette@gmail.com>.
        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['load_balancer']['lbpool'])) {
	$config['load_balancer']['lbpool'] = array();
}
$a_pool = &$config['load_balancer']['lbpool'];

if (isset($_POST['id']))
	$id = $_POST['id'];
else
	$id = $_GET['id'];

if (isset($id) && $a_pool[$id]) {
	$pconfig['monitorip'] = $a_pool[$id]['monitorip'];
	$pconfig['type'] = $a_pool[$id]['type'];
	$pconfig['behaviour'] = $a_pool[$id]['behaviour'];
	$pconfig['name'] = $a_pool[$id]['name'];
	$pconfig['desc'] = $a_pool[$id]['desc'];
	$pconfig['port'] = $a_pool[$id]['port'];
	$pconfig['servers'] = &$a_pool[$id]['servers'];
	$pconfig['monitor'] = $a_pool[$id]['monitor'];
}

$changedesc = "Load Balancer: Pool: ";
$changecount = 0;

if ($_POST) {
	$changecount++;

	unset($input_errors);
	$pconfig = $_POST;

	/* input validation */
	if($_POST['type'] == "server") {
		$reqdfields = explode(" ", "name port monitor servers");
		$reqdfieldsn = explode(",", "Name,Port,Monitor,Server List");
	} else {
		$reqdfields = explode(" ", "name servers");
		$reqdfieldsn = explode(",", "Name,Server List");		
	}

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

	/* Ensure that our pool names are unique */
	for ($i=0; isset($config['load_balancer']['lbpool'][$i]); $i++)
		if (($_POST['name'] == $config['load_balancer']['lbpool'][$i]['name']) && ($i != $id))
			$input_errors[] = "This pool name has already been used.  Pool names must be unique.";
	if (!is_port($_POST['port']))
		if($_POST['type'] == "server")
			$input_errors[] = "The port must be an integer between 1 and 65535.";
	if (is_array($_POST['servers'])) {
		foreach($pconfig['servers'] as $svrent) {
			if (!is_ipaddr($svrent)) {
				if($_POST['type'] == "server") {
					$input_errors[] = "{$svrent} is not a valid IP address.";
				} else {
					$split_ip = split("\|", $svrent);
					/* if(!is_ipaddr($split_ip[0]))
						$input_errors[] = "{$split_ip[0]} is not a valid IP address."; */
					if(!is_ipaddr($split_ip[1]))
						$input_errors[] = "{$split_ip[1]} is not a valid IP address.";
				}
			}
		}
	}

	/* make sure that we are not entering a interface ip as a gateway.  This creates a routing loop. */
	if($_POST['type'] == "gateway") {
		$ifdescrs = array ("wan");
		for ($j = 1; isset ($config['interfaces']['opt' . $j]); $j++) {
			$ifdescrs['opt' . $j] = "opt" . $j;
		}
		if(is_array($pconfig['servers'])) {
			foreach($pconfig['servers'] as $svrent) {
				$split_ip = split("\|", $svrent);
				foreach($ifdescrs as $iface) {
					if($config['interfaces'][$iface]['ipaddr'] <> "") 
						if($config['interfaces'][$iface]['ipaddr'] == $split_ip[0]) 
							$input_errors[] = "{$split_ip[0]} is currently being referenced by an interface ip address on {$iface}.";
				}
			}
		}
	}

	if($_POST['type'] == "server") {
		if ($_POST['monitor'] != "TCP" && $_POST['monitor'] != "HTTP" && $_POST['monitor'] != "ICMP")
			$input_errors[] = "Invalid monitor chosen.";
	}

	if(!isset($_POST['behaviour'])) {
			$input_errors[] = "No pool behaviour chosen.";
	}

	if (!$input_errors) {
		$poolent = array();
		if(isset($id) && $a_pool[$id])
			$poolent = $a_pool[$id];
		if($poolent['name'] != "")
			$changedesc .= " modified '{$poolent['name']}' pool:";
		
		/* kill off old static route */
		if(is_ipaddr($poolent['monitorip']))
			mwexec("route delete {$poolent['monitorip']}");
		
		update_if_changed("type", $poolent['type'], $_POST['type']);
		update_if_changed("behaviour", $poolent['behaviour'], $_POST['behaviour']);
		update_if_changed("monitorip", $poolent['monitorip'], $_POST['monitorip']);
		update_if_changed("name", $poolent['name'], $_POST['name']);
		update_if_changed("description", $poolent['desc'], $_POST['desc']);
		update_if_changed("port", $poolent['port'], $_POST['port']);
		update_if_changed("servers", $poolent['servers'], $_POST['servers']);
		update_if_changed("monitor", $poolent['monitor'], $_POST['monitor']);

		if (isset($id) && $a_pool[$id]) {
			/* modify all virtual servers with this name */
			for ($i = 0; isset($config['load_balancer']['virtual_server'][$i]); $i++) {
				if ($config['load_balancer']['virtual_server'][$i]['pool'] == $a_pool[$id]['name'])
					$config['load_balancer']['virtual_server'][$i]['pool'] = $poolent['name'];
			}
			$a_pool[$id] = $poolent;
		} else
			$a_pool[] = $poolent;
		
		if ($changecount > 0) {
			/* Mark pool dirty */
			conf_mount_rw();
			touch($d_vsconfdirty_path);
			write_config($changedesc);
		}

		header("Location: load_balancer_pool.php");
		exit;
	}
}

$pgtitle = "Load Balancer: Pool: Edit";
include("head.inc");

?>

<body link="#0000CC" vlink="#0000CC" alink="#0000CC">
<script type="text/javascript" language="javascript" src="pool.js"></script>

<script language="javascript">
function gateway_change()
{
	if (document.iform.gatewayip.options[document.iform.gatewayip.selectedIndex].value == "other")
	{
		//document.iform.monitorip.value = "";
		document.iform.monitorip.style.display = "block";
	}
	else
	{
		document.iform.monitorip.value = document.iform.gatewayip.options[document.iform.gatewayip.selectedIndex].value;
		document.iform.monitorip.style.display = "none";
	}
	
}

function type_change(enable_change) {
	switch (document.iform.type.selectedIndex) {
		case 0:
			// Server;
			//clearcombo();
			document.iform.gatewayip.disabled = 1;
			document.iform.ipaddr.style.display = "block";
			document.iform.iface.style.display = "none";
			document.iform.serversSelect.clear;
			document.iform.monitorip.disabled = 1;
			var monitorIpNote = document.getElementById("monitorIpNote");
			monitorIpNote.disabled = 1;
			var monitorip_text = document.getElementById("monitorip_text");
			monitorip_text.className = "vncell";
			monitorip_text.disabled = 1;
			var monitorport_text = document.getElementById("monitorport_text");
			monitorport_text.className = "vncellreq";
			monitorport_text.disabled = 0;
			document.getElementById("monitorport_desc").disabled = 0;
			document.iform.monitorip.value = "";
			document.iform.port.disabled = 0;
			document.iform.monitor.disabled = 0;
			var interfacename_text = document.getElementById("interfacename_text");
			interfacename_text.innerHTML = "Server IP Address";
			var interfacename_desc = document.getElementById("interfacename_desc");
			interfacename_desc.innerHTML = "Enter the IP Address of the inbound load balanced server here.";
			break;
		case 1:
			// Gateway;
			//clearcombo();
			document.iform.gatewayip.disabled = 0;
			document.iform.ipaddr.style.display = "none";
			document.iform.iface.style.display = "block";
			document.iform.monitorip.disabled = 0;
			document.iform.monitorip.value = "";
			var monitorIpNote = document.getElementById("monitorIpNote");
			monitorIpNote.disabled = 0;
			var monitorip_text = document.getElementById("monitorip_text");
			monitorip_text.className = "vncellreq";
			monitorip_text.disabled = 0;
			var monitorport_text = document.getElementById("monitorport_text");
			monitorport_text.className = "vncell";
			monitorport_text.disabled = 1;
			document.getElementById("monitorport_desc").disabled = 1;
			document.iform.port.disabled = 1;
			// set to ICMP
			document.iform.monitor.selectedIndex = 1;
			document.iform.monitor.disabled = 1;
			var interfacename_text = document.getElementById("interfacename_text");
			interfacename_text.innerHTML = "Interface Name";
			var interfacename_desc = document.getElementById("interfacename_desc");
			interfacename_desc.innerHTML = "Select the Interface to be used for outbound load balancing.";
			break;
	}
}

function clearcombo(){
  for (var i=document.iform.serversSelect.options.length-1; i>=0; i--){
    document.iform.serversSelect.options[i] = null;
  }
  document.iform.serversSelect.selectedIndex = -1;
}
</script>

<?php include("fbegin.inc"); ?>
<p class="pgtitle"><?=$pgtitle?></p>
<?php if ($input_errors) print_input_errors($input_errors); ?>

	<form action="load_balancer_pool_edit.php" method="post" name="iform" id="iform">
	<table width="100%" border="0" cellpadding="6" cellspacing="0">
		<tr align="left">
			<td width="22%" valign="top" class="vncellreq">Name</td>
			<td width="78%" class="vtable" colspan="2">
				<input name="name" type="text" <?if(isset($pconfig['name'])) echo "value=\"{$pconfig['name']}\"";?> size="16" maxlength="16">
			</td>
		</tr>
		<tr align="left">
			<td width="22%" valign="top" class="vncell">Description</td>
			<td width="78%" class="vtable" colspan="2">
				<input name="desc" type="text" <?if(isset($pconfig['desc'])) echo "value=\"{$pconfig['desc']}\"";?>size="64">
			</td>
		</tr>

		<tr align="left">
			<td width="22%" valign="top" class="vncellreq">Type</td>
			<td width="78%" class="vtable" colspan="2">
				<select name="type" id="type" onchange="type_change();">
					<option value="server"<?php if($pconfig['type'] == "server") echo " SELECTED"; ?>>Server</option>
					<option value="gateway"<?php if($pconfig['type'] == "gateway") echo " SELECTED"; ?>>Gateway</option>
				</select>
			</td>
		</tr>
		
		<tr align="left">
			<td width="22%" valign="top" class="vncellreq"><?=gettext("Behavior");?></td>
			<td width="78%" class="vtable" colspan="2">
				<input type="radio" name="behaviour" id="behaviour" value="balance"<?php if($pconfig['behaviour'] == 
"balance") echo " CHECKED"; ?>><?=gettext("Load Balancing");?><br>
				<input type="radio" name="behaviour" id="behaviour" value="failover"<?php if($pconfig['behaviour'] == 
"failover") echo " CHECKED"; ?>><?=gettext("Failover");?><br>
				Load Balancing: both active. Failover order: top -> down.<br>
				NOTE: Failover mode only applies to outgoing rules (multi-WAN).
			</td>
		</tr>

		<tr align="left">
			<td width="22%" valign="top" id="monitorport_text" class="vncellreq">Port</td>
			<td width="78%" class="vtable" colspan="2">
				<input name="port" type="text" <?if(isset($pconfig['port'])) echo "value=\"{$pconfig['port']}\"";?> size="16" maxlength="16"><br>
				<div id="monitorport_desc">This is the port your servers are listening on.</div>
			</td>
		</tr>
		<tr align="left">
			<td width="22%" valign="top" class="vncellreq">Monitor</td>
			<td width="78%" class="vtable" colspan="2">
				<select id="monitor" name="monitor">
					<option value="TCP"<?php if($pconfig['monitor'] == "TCP") echo " SELECTED"; ?>>TCP</option>
					<option value="ICMP"<?php if($pconfig['monitor'] == "ICMP") echo " SELECTED"; ?>>ICMP</option>
					<!-- billm - XXX: add HTTP/HTTPS here -->
				</select>
			</td>
		</tr>
		<tr align="left">
			<td width="22%" valign="top" id="monitorip_text" class="vncell">Monitor IP</td>
			<td width="78%" class="vtable" colspan="2">
				<div style="float: none;">
				<select id="gatewayip" name="gatewayip" onchange="gateway_change();" style="float: left;">
<?php
					$interfaces = array('wan' => 'WAN');
					for ($i = 1; isset($config['interfaces']['opt' . $i]); $i++) {
						$interfaces['opt' . $i] = $config['interfaces']['opt' . $i]['descr'];
					}
					foreach ($interfaces as $iface => $ifacename) {
						$ifinfo = get_interface_info($iface);
						if(isset($ifinfo['gateway'])) { ?>
							<option value="<?=$ifinfo['gateway'];?>"><?=htmlspecialchars($ifacename);?>'s Gateway</option>
<?php						}
					}
					$dns_servers = get_dns_servers();
					$iDns = 1;
					foreach($dns_servers as $dns) { ?>
						<option value="<?=$dns;?>">DNS Server <?=$iDns;?> (<?=$dns;?>)</option>
<?php					$iDns++;
					}
?>
						<option value="other" selected>other</option>
				</select>
				<input size="16" id="monitorip" name="monitorip" value="<?php echo $pconfig['monitorip']; ?>" style="float: left;">
				</div><br><br>
				<div id="monitorIpNote" style="float: none;">Note: Some gateways do not respond to pings.</div>
			</td>
		</tr>
		<tr align="left">
			<td width="22%" valign="top" class="vncellreq"><div id="interfacename_text"></div></td>
			<td width="78%" class="vtable" colspan="2">
				<input name="ipaddr" type="text" size="16" style="float: left;">
				<select id="iface" name="iface" style="float: left; display: none;">
<?php
					$interfaces = array('wan' => 'WAN', 'lan' => 'LAN');
					for ($i = 1; isset($config['interfaces']['opt' . $i]); $i++) {
						$interfaces['opt' . $i] = $config['interfaces']['opt' . $i]['descr'];
					}
					foreach ($interfaces as $iface => $ifacename) {
						$ifinfo = get_interface_info($iface);
						if(isset($ifinfo['gateway'])) { ?>
							<option value="<?=$iface;?>"><?=htmlspecialchars($ifacename);?></option>
<?php 						}
					} ?>
				</select>
				<input class="formbtn" type="button" name="button1" value="Add to pool" onclick="AddServerToPool(document.iform);"><br>
				<div id="interfacename_desc"></div>
			</td>
		</tr>
		<tr>
			<td width="22%" valign="top" class="vncellreq">List</td>
			<td width="78%" class="vtable" colspan="2" valign="top">
				<table>
					<tbody>
					<tr>
						<td>
							<select id="serversSelect" name="servers[]" multiple="true" size="5">
							
<?php
if (is_array($pconfig['servers'])) {
	foreach($pconfig['servers'] as $svrent) {
		echo "    <option value=\"{$svrent}\">{$svrent}</option>\n";
	}
}
echo "</select>";
?>
						</td>
						<td valign="top">
							<input class="formbtn" type="button" name="button2" value="Remove from pool" onclick="RemoveServerFromPool(document.iform);">
						</td>
					</tr>
					</tbody>
				</table>
			</td>
		</tr>
		<tr align="left">
			<td width="22%" valign="top">&nbsp;</td>
			<td width="78%">
				<input name="Submit" type="submit" class="formbtn" value="Save" onClick="AllServers('serversSelect', true)">
				<?php if (isset($id) && $a_pool[$id]): ?>
				<input name="id" type="hidden" value="<?=$id;?>">
				<?php endif; ?>
			</td>
		</tr>
	</table>
	</form>
<br>
<script language="javascript">
	type_change();
	gateway_change();
</script>
<?php include("fend.inc"); ?>
</body>
</html>
