(legacy) refactor load_balancer_pool_edit.php

src/www/load_balancer_pool_edit.php

 <?php
 
 /*
-	Copyright (C) 2014-2015 Deciso B.V.
+        Copyright (C) 2014-2016 Deciso B.V.
         Copyright (C) 2005-2008 Bill Marquette <bill.marquette@gmail.com>.
         All rights reserved.
 
@@ -31,109 +31,110 @@ require_once("guiconfig.inc");
 require_once("services.inc");
 require_once("interfaces.inc");
 
-$referer = (isset($_SERVER['HTTP_REFERER']) ? $_SERVER['HTTP_REFERER'] : '/load_balancer_pool.php');
 
-if (!is_array($config['load_balancer']['lbpool'])) {
+if (empty($config['load_balancer']['lbpool']) || !is_array($config['load_balancer']['lbpool'])) {
     $config['load_balancer']['lbpool'] = array();
 }
 $a_pool = &$config['load_balancer']['lbpool'];
 
-if (is_numericint($_GET['id']))
+
+$copy_fields = array('name', 'mode', 'descr', 'port', 'retry', 'monitor', 'servers', 'serversdisabled');
+if ($_SERVER['REQUEST_METHOD'] === 'GET') {
+    if (isset($_GET['id']) && !empty($a_pool[$_GET['id']])) {
         $id = $_GET['id'];
-if (isset($_POST['id']) && is_numericint($_POST['id']))
-	$id = $_POST['id'];
+    }
+    $pconfig = array();
 
-if (isset($id) && $a_pool[$id]) {
-	$pconfig['name'] = $a_pool[$id]['name'];
-	$pconfig['mode'] = $a_pool[$id]['mode'];
-	$pconfig['descr'] = $a_pool[$id]['descr'];
-	$pconfig['port'] = $a_pool[$id]['port'];
-	$pconfig['retry'] = $a_pool[$id]['retry'];
-	$pconfig['servers'] = &$a_pool[$id]['servers'];
-	$pconfig['serversdisabled'] = &$a_pool[$id]['serversdisabled'];
-	$pconfig['monitor'] = $a_pool[$id]['monitor'];
-}
+    // copy fields
+    foreach ($copy_fields as $fieldname) {
+        if (isset($id) && isset($a_pool[$id][$fieldname])) {
+            $pconfig[$fieldname] = $a_pool[$id][$fieldname];
+        } else {
+            $pconfig[$fieldname] = null;
+        }
+    }
 
-if ($_POST) {
-	unset($input_errors);
+    // init arrays
+    $pconfig['servers'] = is_array($pconfig['servers']) ? $pconfig['servers'] : array();
+    $pconfig['serversdisabled'] = is_array($pconfig['serversdisabled']) ? $pconfig['serversdisabled'] : array();
+} elseif ($_SERVER['REQUEST_METHOD'] === 'POST') {
+    if (isset($_POST['id']) && !empty($a_pool[$_POST['id']])) {
+        $id = $_POST['id'];
+    }
     $pconfig = $_POST;
-
+    $input_errors = array();
     /* input validation */
     $reqdfields = explode(" ", "name mode port monitor servers");
     $reqdfieldsn = array(gettext("Name"),gettext("Mode"),gettext("Port"),gettext("Monitor"),gettext("Server List"));
 
-	do_input_validation($_POST, $reqdfields, $reqdfieldsn, $input_errors);
+    do_input_validation($pconfig, $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 != $id))
+    for ($i=0; isset($config['load_balancer']['lbpool'][$i]); $i++) {
+        if ($pconfig['name'] == $config['load_balancer']['lbpool'][$i]['name'] && $i != $id) {
             $input_errors[] = gettext("This pool name has already been used.  Pool names must be unique.");
+        }
+    }
 
-	if (strpos($_POST['name'], " ") !== false)
+    if (strpos($pconfig['name'], " ") !== false) {
         $input_errors[] = gettext("You cannot use spaces in the 'name' field.");
+    }
 
-	if (in_array($_POST['name'], $reserved_table_names))
+    if (in_array($pconfig['name'], $reserved_table_names)) {
         $input_errors[] = sprintf(gettext("The name '%s' is a reserved word and cannot be used."), $_POST['name']);
+    }
 
-	if (is_alias($_POST['name']))
+    if (is_alias($pconfig['name'])) {
         $input_errors[] = sprintf(gettext("Sorry, an alias is already named %s."), $_POST['name']);
+    }
 
-	if (!is_portoralias($_POST['port']))
+    if (!is_portoralias($pconfig['port'])) {
         $input_errors[] = gettext("The port must be an integer between 1 and 65535, or a port alias.");
+    }
 
     // May as well use is_port as we want a positive integer and such.
-	if (!empty($_POST['retry']) && !is_port($_POST['retry']))
+    if (!empty($pconfig['retry']) && !is_port($pconfig['retry'])) {
         $input_errors[] = gettext("The retry value must be an integer between 1 and 65535.");
+    }
 
-	if (is_array($_POST['servers'])) {
+    if (is_array($pconfig['servers'])) {
         foreach($pconfig['servers'] as $svrent) {
             if (!is_ipaddr($svrent) && !is_subnetv4($svrent)) {
                 $input_errors[] = sprintf(gettext("%s is not a valid IP address or IPv4 subnet (in \"enabled\" list)."), $svrent);
-			}
-			else if (is_subnetv4($svrent) && subnet_size($svrent) > 64) {
+            } elseif (is_subnetv4($svrent) && subnet_size($svrent) > 64) {
                 $input_errors[] = sprintf(gettext("%s is a subnet containing more than 64 IP addresses (in \"enabled\" list)."), $svrent);
             }
         }
     }
-	if (is_array($_POST['serversdisabled'])) {
+    if (is_array($pconfig['serversdisabled'])) {
         foreach($pconfig['serversdisabled'] as $svrent) {
             if (!is_ipaddr($svrent) && !is_subnetv4($svrent)) {
                 $input_errors[] = sprintf(gettext("%s is not a valid IP address or IPv4 subnet (in \"disabled\" list)."), $svrent);
-			}
-			else if (is_subnetv4($svrent) && subnet_size($svrent) > 64) {
+            } elseif (is_subnetv4($svrent) && subnet_size($svrent) > 64) {
                 $input_errors[] = sprintf(gettext("%s is a subnet containing more than 64 IP addresses (in \"disabled\" list)."), $svrent);
             }
         }
     }
     $m = array();
-	for ($i=0; isset($config['load_balancer']['monitor_type'][$i]); $i++)
+    for ($i=0; isset($config['load_balancer']['monitor_type'][$i]); $i++) {
         $m[$config['load_balancer']['monitor_type'][$i]['name']] = $config['load_balancer']['monitor_type'][$i];
-
-	if (!isset($m[$_POST['monitor']]))
+    }
+    if (!isset($m[$pconfig['monitor']])) {
         $input_errors[] = gettext("Invalid monitor chosen.");
-
-	if (!$input_errors) {
+    }
+    if (count($input_errors) == 0) {
         $poolent = array();
-
-		if (isset($id) && $a_pool[$id]) {
-			$poolent = $a_pool[$id];
+        foreach ($copy_fields as $fieldname) {
+            $poolent[$fieldname] = $pconfig[$fieldname];
         }
 
-		$poolent['name'] = $_POST['name'];
-		$poolent['mode'] = $_POST['mode'];
-		$poolent['descr'] = $_POST['descr'];
-		$poolent['port'] = $_POST['port'];
-		$poolent['retry'] = $_POST['retry'];
-		$poolent['servers'] = $_POST['servers'];
-		$poolent['serversdisabled'] = $_POST['serversdisabled'];
-		$poolent['monitor'] = $_POST['monitor'];
-
-		if (isset($id) && $a_pool[$id]) {
+        if (isset($id)) {
             /* modify all virtual servers with this name */
             for ($i = 0; isset($config['load_balancer']['virtual_server'][$i]); $i++) {
-				if ($config['load_balancer']['virtual_server'][$i]['lbpool'] == $a_pool[$id]['name'])
+                if ($config['load_balancer']['virtual_server'][$i]['lbpool'] == $a_pool[$id]['name']) {
                     $config['load_balancer']['virtual_server'][$i]['lbpool'] = $poolent['name'];
                 }
+            }
             $a_pool[$id] = $poolent;
         } else {
             $a_pool[] = $poolent;
@@ -142,189 +143,232 @@ if ($_POST) {
         mark_subsystem_dirty('loadbalancer');
         write_config();
         header("Location: load_balancer_pool.php");
-		exit;
-	}
+        exit;    }
 }
 
-$service_hook = 'relayd';
 
-include("head.inc");
 
+$service_hook = 'relayd';
+legacy_html_escape_form_data($pconfig);
+include("head.inc");
 ?>
 
-
 <body>
+  <!-- push all available (nestable) aliases in a hidden select box -->
+  <select class="hidden" id="aliases">
+  <?php
+      if (!empty($config['aliases']['alias'])):
+        foreach ($config['aliases']['alias'] as $alias):
+          if ($alias['type'] == 'port'):?>
+          <option data-type="<?=$alias['type'];?>" value="<?=$alias['name'];?>"><?=$alias['name'];?></option>
+  <?php
+          endif;
+        endforeach;
+      endif;
+  ?>
+  </select>
+
 <?php include("fbegin.inc"); ?>
   <script type="text/javascript">
-	//<![CDATA[
-	function clearcombo(){
-	  for (var i=document.iform.serversSelect.options.length-1; i>=0; i--){
-	    document.iform.serversSelect.options[i] = null;
+  $( document ).ready(function() {
+      // init port type ahead
+      var all_aliases = [];
+      $("#aliases > option").each(function(){
+          all_aliases.push($(this).val())
+      });
+      $("#port").typeahead({ source: all_aliases });
+
+      $("#mode").change(function(event){
+          event.preventDefault();
+          if ($('#mode').val() == 'failover' && $('#servers option').length > 1){
+              $('#servers option:not(:first)').remove().appendTo('#serversdisabled');
+          }
+      });
+      $("#btn_add_to_pool").click(function(event){
+          event.preventDefault();
+          if ($('#mode').val() != 'failover' || $('#servers option').length == 0){
+              $('#servers').append($('<option>', { value : $("#ipaddr").val() }).text($("#ipaddr").val()));
+          } else {
+              $('#serversdisabled').append($('<option>', { value : $("#ipaddr").val() }).text($("#ipaddr").val()));
           }
-	  document.iform.serversSelect.selectedIndex = -1;
+      });
+
+      $("#moveToEnabled").click(function(event){
+          event.preventDefault();
+          if ($('#mode').val() != 'failover' ||
+              ($('#servers option').length == 0 && $('#serversdisabled option:selected').length == 1))
+          {
+              $('#serversdisabled option:selected').remove().appendTo('#servers');
           }
-	//]]>
+      });
+      $("#moveToDisabled").click(function(event){
+          event.preventDefault();
+          $('#servers option:selected').remove().appendTo('#serversdisabled');
+      });
+
+      $("#btn_del_serversdisabled").click(function(event){
+          event.preventDefault();
+          $('#serversdisabled option:selected').remove();
+      });
+
+      $("#btn_del_servers").click(function(event){
+          event.preventDefault();
+          $('#servers option:selected').remove();
+      });
+
+      $("#save").click(function(){
+          $('#servers option').prop('selected', true);
+          $('#serversdisabled option').prop('selected', true);
+      });
+  });
   </script>
 
-	<script type="text/javascript" src="/javascript/autosuggest.js"></script>
-	<script type="text/javascript" src="/javascript/suggestions.js"></script>
-
   <section class="page-content-main">
-
     <div class="container-fluid">
-
       <div class="row">
-
         <?php if (isset($input_errors) && count($input_errors) > 0) print_input_errors($input_errors); ?>
-
         <section class="col-xs-12">
-
           <div class="content-box">
-
-                        <form action="load_balancer_pool_edit.php" method="post" name="iform" id="iform">
-
+            <form method="post" name="iform" id="iform">
               <div class="table-responsive">
-					<table class="table table-striped table-sort">
+                <table class="table table-striped">
                   <tr>
-										<td colspan="2" valign="top" class="listtopic"><?=gettext("Add/edit Load Balancer - Pool entry"); ?></td>
+                    <td>
+                      <strong><?=gettext("Add/edit - Pool entry"); ?></strong>
+                    </td>
+                    <td align="right">
+                      <small><?=gettext("full help"); ?> </small>
+                      <i class="fa fa-toggle-off text-danger"  style="cursor: pointer;" id="show_all_help_page" type="button"></i>
+                    </td>
                   </tr>
-									<tr align="left">
-										<td width="22%" valign="top" class="vncellreq"><?=gettext("Name"); ?></td>
-										<td width="78%" class="vtable" colspan="2">
-											<input name="name" type="text" <?php if(isset($pconfig['name'])) echo "value=\"{$pconfig['name']}\"";?> size="16" maxlength="16" />
+                  <tr>
+                    <td><i class="fa fa-info-circle text-muted"></i> <?=gettext("Name"); ?></td>
+                    <td>
+                      <input name="name" type="text" value="<?=$pconfig['name'];?>" />
                     </td>
                   </tr>
-									<tr align="left">
-										<td width="22%" valign="top" class="vncellreq"><?=gettext("Mode"); ?></td>
-										<td width="78%" class="vtable" colspan="2">
-											<select id="mode" name="mode" onchange="enforceFailover(); checkPoolControls();">
-												<option value="loadbalance" <?php if(!isset($pconfig['mode']) || ($pconfig['mode'] == "loadbalance")) echo "selected=\"selected\"";?>><?=gettext("Load Balance");?></option>
-												<option value="failover"  <?php if($pconfig['mode'] == "failover") echo "selected=\"selected\"";?>><?=gettext("Manual Failover");?></option>
+                  <tr>
+                    <td><i class="fa fa-info-circle text-muted"></i> <?=gettext("Mode"); ?></td>
+                    <td>
+                      <select id="mode" name="mode">
+                        <option value="loadbalance" <?=$pconfig['mode'] == "loadbalance" ? "selected=\"selected\"" : "";?>>
+                          <?=gettext("Load Balance");?>
+                        </option>
+                        <option value="failover"  <?=$pconfig['mode'] == "failover" ? "selected=\"selected\"" : "";?>>
+                          <?=gettext("Manual Failover");?>
+                        </option>
                       </select>
                     </td>
                   </tr>
-									<tr align="left">
-										<td width="22%" valign="top" class="vncell"><?=gettext("Description"); ?></td>
-										<td width="78%" class="vtable" colspan="2">
+                  <tr>
+                    <td><i class="fa fa-info-circle text-muted"></i> <?=gettext("Description"); ?></td>
+                    <td>
                       <input name="descr" type="text" <?php if(isset($pconfig['descr'])) echo "value=\"{$pconfig['descr']}\"";?> size="64" />
                     </td>
                   </tr>
-
-									<tr align="left">
-										<td width="22%" valign="top" id="monitorport_text" class="vncellreq"><?=gettext("Port"); ?></td>
-										<td width="78%" class="vtable" colspan="2">
-											<input class="formfldalias" id="port" name="port" type="text" <?php if(isset($pconfig['port'])) echo "value=\"{$pconfig['port']}\"";?> size="16" maxlength="16" /><br />
-											<div id="monitorport_desc">
+                  <tr>
+                    <td><a id="help_for_port" href="#" class="showhelp"><i class="fa fa-info-circle"></i></a> <?=gettext("Port"); ?></td>
+                    <td>
+                      <input type="text" id="port"  name="port" value="<?=$pconfig['port'];?>"/>
+                      <div class="hidden" for="help_for_port">
                         <?=gettext("This is the port your servers are listening on."); ?><br />
                         <?=gettext("You may also specify a port alias listed in Firewall -&gt; Aliases here."); ?>
                       </div>
-											<script type="text/javascript">
-											//<![CDATA[
-												var addressarray = <?= json_encode(get_alias_list(array("port", "url_ports", "urltable_ports"))) ?>;
-												var oTextbox1 = new AutoSuggestControl(document.getElementById("port"), new StateSuggestions(addressarray));
-											//]]>
-											</script>
                     </td>
                   </tr>
-									<tr align="left">
-										<td width="22%" valign="top" id="retry_text" class="vncell"><?=gettext("Retry"); ?></td>
-										<td width="78%" class="vtable" colspan="2">
-											<input name="retry" type="text" <?php if(isset($pconfig['retry'])) echo "value=\"{$pconfig['retry']}\"";?> size="16" maxlength="16" /><br />
-											<div id="retry_desc"><?=gettext("Optionally specify how many times to retry checking a server before declaring it down."); ?></div>
+                  <tr>
+                    <td><a id="help_for_retry" href="#" class="showhelp"><i class="fa fa-info-circle"></i></a> <?=gettext("Retry"); ?></td>
+                    <td>
+                      <input name="retry" type="text" value="<?=$pconfig['retry'];?>"/>
+                      <div for="help_for_retry" class="hidden">
+                        <?=gettext("Optionally specify how many times to retry checking a server before declaring it down."); ?>
+                      </div>
                     </td>
                   </tr>
                   <tr>
-										<td colspan="2">&nbsp;</td>
+                    <td colspan="2"><strong><?=gettext("Add item to pool"); ?></strong></td>
                   </tr>
                   <tr>
-										<td colspan="2" valign="top" class="listtopic"><?=gettext("Add item to pool"); ?></td>
-									</tr>
-									<tr align="left">
-										<td width="22%" valign="top" class="vncellreq"><?=gettext("Monitor"); ?></td>
-										<td width="78%" class="vtable" colspan="2">
-											<?php if(count($config['load_balancer']['monitor_type'])): ?>
+                    <td><i class="fa fa-info-circle text-muted"></i> <?=gettext("Monitor"); ?></td>
+                    <td>
                       <select id="monitor" name="monitor">
-												<?php
-													foreach ($config['load_balancer']['monitor_type'] as $monitor) {
-														if ($monitor['name'] == $pconfig['monitor']) {
-															$selected=" selected=\"selected\"";
-														} else {
-															$selected = "";
-														}
-														echo "<option value=\"{$monitor['name']}\"{$selected}>{$monitor['name']}</option>";
-													}
-												?>
-											<?php else: ?>
-												<b><?=gettext("NOTE"); ?>:</b> <?=gettext("Please add a monitor IP address on the monitors tab if you wish to use this feature."); ?>
-											<?php endif; ?>
+<?php
+                      if (!empty($config['load_balancer']['monitor_type'])):
+                        foreach ($config['load_balancer']['monitor_type'] as $monitor):?>
+                        <option value="<?=$monitor['name'];?>" <?=$monitor['name'] == $pconfig['monitor'] ? "selected=\"selected\"" : "";?>>
+                          <?=$monitor['name'];?>
+                        </option>
+<?php
+                        endforeach;
+                      endif;?>
                       </select>
                     </td>
                   </tr>
-									<tr align="left">
-										<td width="22%" valign="top" class="vncellreq"><?=gettext("Server IP Address"); ?></td>
-										<td width="78%" class="vtable" colspan="2">
-											<input name="ipaddr" type="text" size="16" style="float: left;" />
-											<input class="btn btn-default" type="button" name="button1" value="<?=gettext("Add to pool"); ?>" onclick="AddServerToPool(document.iform); enforceFailover(); checkPoolControls();" /><br />
+                  <tr>
+                    <td><i class="fa fa-info-circle text-muted"></i> <?=gettext("Server IP Address"); ?></td>
+                    <td>
+                      <div class="input-group">
+                        <span class="input-group-btn">
+                          <button class="btn btn-default" id="btn_add_to_pool" type="button"><?=gettext("Add to pool");?></button>
+                        </span>
+                        <input class="form-control" id="ipaddr" type="text">
+                      </div>
                     </td>
                   </tr>
                   <tr>
-										<td colspan="2">&nbsp;</td>
+                    <td colspan="2"><strong><?=gettext("Current Pool Members"); ?></strong></td>
                   </tr>
                   <tr>
-										<td colspan="2" valign="top" class="listtopic"><?=gettext("Current Pool Members"); ?></td>
-									</tr>
+                    <td><i class="fa fa-info-circle text-muted"></i> <?=gettext("Members"); ?></td>
+                    <td>
+                      <table class="table table-condensed">
+                        <thead>
                           <tr>
-										<td width="22%" valign="top" class="vncellreq"><?=gettext("Members"); ?></td>
-										<td width="78%" class="vtable" colspan="2" valign="top">
-											<table summary="members">
+                            <th><?=gettext("Pool Disabled"); ?></th>
+                            <th></th>
+                            <th><?=gettext("Enabled (default)"); ?></th>
+                          </tr>
+                        </thead>
                         <tbody>
                           <tr>
-													<td align="center">
-															<b><?=gettext("Pool Disabled"); ?></b>
-														<br/>
-														<select id="serversDisabledSelect" name="serversdisabled[]" multiple="multiple" size="5">
-							<?php
-								if (is_array($pconfig['serversdisabled'])) {
-									foreach($pconfig['serversdisabled'] as $svrent) {
-										if($svrent != '') echo "    <option value=\"{$svrent}\">{$svrent}</option>\n";
-									}
-								}
-							?>
+                            <td>
+                              <select id="serversdisabled" name="serversdisabled[]" multiple="multiple">
+<?php
+                              foreach ($pconfig['serversdisabled'] as $svrent):?>
+                                <option value="<?=$svrent;?>"><?=$svrent;?> </option>
+<?php
+                              endforeach;?>
                               </select>
-														<input class="btn btn-default" type="button" name="removeDisabled" value="<?=gettext("Remove"); ?>" onclick="RemoveServerFromPool(document.iform, 'serversdisabled[]');" />
+                              <hr/>
+                              <button id="btn_del_serversdisabled" class="btn btn-default btn-xs" data-toggle="tooltip"><span class="fa fa-trash text-muted"></span></button>
                             </td>
-
-													<td valign="middle" align="center">
-														<button class="btn btn-default btn-xs"  id="moveToEnabled" name="moveToEnabled"  onclick="moveOptions(document.iform.serversDisabledSelect, document.iform.serversSelect); checkPoolControls();"><span class="glyphicon glyphicon-arrow-left"></span></button><br />
-														<button class="btn btn-default btn-xs" id="moveToDisabled" name="moveToDisabled"  onclick="moveOptions(document.iform.serversSelect, document.iform.serversDisabledSelect); checkPoolControls();"><span class="glyphicon glyphicon-arrow-right"></span></button>
+                            <td>
+                              <button class="btn btn-default btn-xs" id="moveToDisabled"><span class="glyphicon glyphicon-arrow-left"></span></button><br />
+                              <button class="btn btn-default btn-xs" id="moveToEnabled"><span class="glyphicon glyphicon-arrow-right"></span></button>
                             </td>
-
-													<td align="center">
-															<b><?=gettext("Enabled (default)"); ?></b>
-														<br/>
-														<select id="serversSelect" name="servers[]" multiple="multiple" size="5">
-							<?php
-							if (is_array($pconfig['servers'])) {
-								foreach($pconfig['servers'] as $svrent) {
-									echo "    <option value=\"{$svrent}\">{$svrent}</option>\n";
-								}
-							}
-							?>
+                            <td>
+                              <select id="servers" name="servers[]" multiple="multiple">
+<?php
+                              foreach ($pconfig['servers'] as $svrent):?>
+                                <option value="<?=$svrent;?>"><?=$svrent;?> </option>
+<?php
+                              endforeach;?>
                               </select>
-														<input class="btn btn-default" type="button" name="removeEnabled" value="<?=gettext("Remove"); ?>" onclick="RemoveServerFromPool(document.iform, 'servers[]');" />
+                              <hr/>
+                              <button id="btn_del_servers" class="btn btn-default btn-xs" data-toggle="tooltip"><span class="fa fa-trash text-muted"></span></button>
                             </td>
                           </tr>
                         </tbody>
                       </table>
                     </td>
                   </tr>
-									<tr align="left">
-										<td width="22%" valign="top">&nbsp;</td>
+                  <tr>
+                    <td>&nbsp;</td>
                     <td width="78%">
                       <br />
-											<input name="Submit" type="submit" class="btn btn-primary" value="<?=gettext("Save"); ?>" onclick="AllServers('serversSelect', true); AllServers('serversDisabledSelect', true);" />
-											<input type="button" class="btn btn-default" value="<?=gettext("Cancel");?>" onclick="window.location.href='<?=$referer;?>'" />
-											<?php if (isset($id) && $a_pool[$id] && $_GET['act'] != 'dup'): ?>
+                      <input id="save" name="save" type="submit" class="btn btn-primary" value="<?=gettext("Save"); ?>"/>
+                      <input type="button" class="btn btn-default" value="<?=gettext("Cancel");?>" onclick="window.location.href='<?=(isset($_SERVER['HTTP_REFERER']) ? $_SERVER['HTTP_REFERER'] : '/load_balancer_pool.php');?>'" />
+                      <?php if (isset($id) && (empty($_GET['act']) || $_GET['act'] != 'dup')): ?>
                       <input name="id" type="hidden" value="<?=htmlspecialchars($id);?>" />
                       <?php endif; ?>
                     </td>