This patch adds the initial support for layer7 protocol inspection gui.

1 files changed, 592 insertions, 0 deletions

diff --git a/usr/local/www/firewall_shaper_layer7.php b/usr/local/www/firewall_shaper_layer7.php
new file mode 100755
index 0000000..71574ec
--- /dev/null
+++ b/usr/local/www/firewall_shaper_layer7.php
@@ -0,0 +1,592 @@
+<?php

+/* $Id$ */

+/*

+	firewall_shaper_layer7.php

+	Copyright (C) 2008 Helder Pereira, André Ribeiro

+	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.

+*/

+

+##|+PRIV

+##|*IDENT=page-firewall-trafficshaper-layer7

+##|*NAME=Firewall: Traffic Shaper: Layer7 page

+##|*DESCR=Allow access to the 'Firewall: Traffic Shaper: Layer7' page.

+##|*MATCH=firewall_shaper_layer7.php*

+##|-PRIV

+

+require("guiconfig.inc");

+

+// Variables protocols (dynamic) and structures (static)

+$avail_protos =& generate_protocols_array();

+$avail_structures = array("action","queue","limiter");

+

+// Available behaviours

+$avail_behaviours_action = array("allow","block");

+read_altq_config();

+$avail_behaviours_altq = get_altq_name_list();

+read_dummynet_config();

+$avail_behaviours_limiter = get_dummynet_name_list();

+$show_proto_form = false;

+

+

+//More variables

+$pgtitle = array("Firewall","Traffic Shaper", "Layer7");

+

+$output_form = "";

+

+$default_layer7shaper_msg = "<tr><td colspan=\"4\">";

+$default_layer7shaper_msg .= "<p><span class=\"vexpl\"><span class=\"red\"><strong>Note:<br>";

+$default_layer7shaper_msg .= "</strong></span>You can add new layer7 protocol patterns by simply uploading the file <a href=\"diag_patterns.php\">here.</a><br>";

+$default_layer7shaper_msg .= "</td></tr>";

+

+

+read_layer7_config();

+

+if($_GET['reset'] <> "") {

+        mwexec("killall -9 pfctl php");

+	mwexec("killall -9 ipfw-classifyd"); //kill all ipfw-classifyd processes

+	exit;

+}

+

+if ($_GET) {

+	if ($_GET['container'])

+        	$name = trim($_GET['container']);        

+        if ($_GET['action'])

+                $action = $_GET['action'];

+}

+

+if($_POST) {

+	if ($_POST['container']) {

+		$name = trim($_POST['container']);

+	}

+}

+

+if ($name) {

+	//Get the object from the 7rules list

+	$container = $layer7_rules_list[$name];

+}

+

+

+if ($_GET) {

+	switch ($action) {

+		case "add":

+			$show_proto_form = true;

+			$container = new layer7();

+			$output_form .= $container->build_form(); //constructs the graphical interface on the right side

+			unset($container);

+			break;

+		case "show":

+			$show_proto_form = true;

+			if($container) {

+				$output_form .= $container->build_form();

+			}

+			else {

+				$show_proto_form = false;

+				$input_errors[] = "Layer7 Rules Container not found!";

+			}

+			break;

+		default:

+			echo log_error("Get default");

+			$show_proto_form = false;

+			$output_form .= "<p class=\"pgtitle\">" . $dn_default_shaper_msg . $default_layer7shaper_msg . "</p>";

+			break;

+	}

+}

+

+//add a new l7rules container

+else if ($_POST) {

+	$show_proto_form = true;

+	unset($input_errors);

+	

+	if($_POST['submit']) {

+		$l7r =& new layer7();

+		$_POST['divert_port'] = $l7r->gen_divert_port();

+		for($i=0; $i<100; $i++) {

+			if($_POST['protocol'][$i] <> "") {

+				$_POST['l7rules'][$i]['protocol'] = $_POST['protocol'][$i];

+				$_POST['l7rules'][$i]['structure'] = $_POST['structure'][$i];

+				$_POST['l7rules'][$i]['behaviour'] = $_POST['behaviour'][$i];

+			}

+			else {

+				break;

+			}

+		}

+		$l7r->validate_input($_POST,&$input_errors);

+		$l7r->ReadConfig($_POST['container'], $_POST);

+		//Before writing the results, we need to test for repeated protocols

+		$non_dupes = array();

+		$dupes = array();

+		for($j=0; $j<$i; $j++) {

+			if(!$non_dupes[$_POST['protocol'][$j]])

+				$non_dupes[$_POST['protocol'][$j]] = true;

+			else

+				$dupes[] = $_POST['protocol'][$j];

+		}

+		unset($non_dupes);

+		if(sizeof($dupes) == 0 && !$input_errors) {

+			$l7r->wconfig();

+			write_config();

+			touch($d_shaperconfdirty_path);

+		

+			read_layer7_config();

+		}

+		else {

+			if(sizeof($dupes) > 0) {

+				$dupe_error = "Found the following repeated protocol definitions: ";

+				foreach($dupes as $dupe)

+					$dupe_error .= "$dupe ";

+				$input_errors[] .= $dupe_error;

+			}

+		}

+		unset($dupes);

+		unset($dupe_error);

+		//Even if there are repeated protocols, we won't loose any previous values

+		//The user will be able to solve the situation

+		$output_form .= $l7r->build_form();

+		//Necessary to correctly build the proto form

+		$container = $layer7_rules_list[$name];

+		if($input_errors)

+			$container =& $l7r;

+	} else if($_POST['apply']) {

+		write_config();

+

+		$retval = 0;

+		$savemsg = get_std_save_message($retval);

+			

+		config_lock();

+		$retval = filter_configure();

+		config_unlock();

+			

+		if(stristr($retval, "error") <> true)

+			$savemsg = get_std_save_message($retval);

+		else

+			$savemsg = $retval;

+

+		unlink($d_shaperconfdirty_path);

+		

+		if($container) {

+			$output_form .= $container->build_form();

+		} else {

+			$show_proto_form = false;

+			$output_form .= "<p class=\"pgtitle\">" . $dn_default_shaper_msg . $default_layer7shaper_msg . "</p>";

+		}

+	} else if ($_POST['delete']) {

+		$container->delete_l7c();

+		write_config();

+		touch($d_shaperconfdirty_path);

+		unset($container);

+		

+		header("Location: firewall_shaper_layer7.php");

+		exit;

+	}

+	else {

+		$show_proto_form = false;

+	}

+}

+else {

+	$show_proto_form = false;

+	$output_form .= "<p class=\"pgtitle\">" . $dn_default_shaper_msg . $default_layer7shaper_msg . "</p>";

+}

+

+// Builds the left tree

+$tree = "<ul class=\"tree\" >";

+if (is_array($layer7_rules_list)) {

+        foreach ($layer7_rules_list as $tmpl7) {

+                $tree .= $tmpl7->build_tree();

+        }

+}

+$tree .= "</ul>";

+

+$output = "<div id=\"shaperarea\" style=\"position:relative\">";

+$output .= $output_form;

+

+include("head.inc");

+?>

+

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

+<link rel="stylesheet" type="text/css" media="all" href="./tree/tree.css" />

+<script type="text/javascript" src="./tree/tree.js"></script>

+                                        

+<script language="javascript">

+

+var initial_count = new Array();

+var rows_limit = 0; // Set to 0 to disable limitation

+

+

+/* Build the behaviours arrays in javascript */

+var js_behaviours_action = ['allow', 'block']; //static

+

+var js_behaviours_altq = new Array();

+js_behaviours_altq = array_altq(js_behaviours_altq);

+

+var js_behaviours_limiter = new Array();

+js_behaviours_limiter = array_limiter(js_behaviours_limiter);

+

+function array_altq(a_behav) {

+	var index;

+	<? if (!empty($avail_behaviours_altq)) {

+	  foreach ($avail_behaviours_altq as $key => $queue) { ?>

+	    name = "<?= $queue; ?>";

+	    index = <? echo $key; ?>;

+	    a_behav[index] = name;

+	<? }

+	} ?>

+	return a_behav;

+}

+

+function array_limiter(a_behav) {

+	var index;

+	<? if (!empty($avail_behaviours_limiter)) {

+	  foreach ($avail_behaviours_limiter as $key => $limiter) { ?>

+		name = "<?= $limiter; ?>";

+		index = <? echo $key; ?>;

+		a_behav[index] = name;

+	<? }

+	} ?>

+	return a_behav;

+}

+

+/* Fill the variables with available protocols, structures and behaviours */

+function fillProtocol() {

+	var protocol = '<select name="protocol[]" id="protocol" style="font-size:8pt">';

+	var name;

+

+	<? foreach ($avail_protos as $key => $proto) { ?>

+		name = "<?= $proto; ?>";

+		protocol += "<option value=" + name + ">" + name + "</option>";

+	<? } ?>

+	protocol += "</select>";

+	

+	return protocol;

+}

+

+function fillStructure() {

+	var structure = '<select name="structure[]" id="structure" style="font-size:8pt" onchange="changeBehaviourValues(this.parentNode.parentNode);">';

+	var name;

+	<? foreach ($avail_structures as $key => $struct) { ?>

+		name = "<?= $struct; ?>";

+		if(name == "queue") {

+		  if(js_behaviours_altq != "") { structure += "<option value=" + name + ">" + name + "</option>";}

+		}

+		else {

+		  if(name == "limiter") {

+		    if(js_behaviours_limiter != "") { structure += "<option value=" + name + ">" + name + "</option>";}

+		  }

+		  else structure += "<option value=" + name + ">" + name + "</option>"; //action		  		

+		}		

+	<? } ?>

+	structure += "</select>";

+	

+	return structure;

+}

+		

+//Used by default to fill the values when inserting a new row.

+function fillBehaviour() {

+	var behaviour = '<select name="behaviour[]" id="behaviour" style="width:80px; font-size:8pt">';

+	var name;

+	<? foreach ($avail_behaviours_action as $key => $behav) { ?>

+		name = "<?= $behav; ?>";

+		behaviour += "<option value=" + name + ">" + name + "</option>";

+	<? } ?>

+	behaviour += "</select>";

+	

+	return behaviour;

+}

+

+/* Change the values on behaviours select when changing the structure row */

+function changeBehaviourValues(row) {

+	var selectedRow = row.rowIndex - 2; //because row.rowIndex returns 2, not 0

+	var structureSelected = document.getElementsByName("structure[]")[selectedRow].value;		

+	

+	//Select the behaviours values to array a_behav

+	var a_behav = new Array();	

+	if (structureSelected == "action") {

+		a_behav = js_behaviours_action; //static

+	}

+	else {

+		if (structureSelected == "queue") {			

+			a_behav = js_behaviours_altq;

+		}

+		else {							

+			a_behav = js_behaviours_limiter;

+		}					

+	}			

+	

+	//Build the html statement with the array values previously selected

+	var new_behav;

+	var name;

+	for(i=0; i<a_behav.length; i++) {

+		new_behav += "<option value=" + a_behav[i] + ">" + a_behav[i] + "</option>";	

+	}

+		

+	document.getElementsByName("behaviour[]")[selectedRow].innerHTML = new_behav;		

+}

+

+/* Add row to the table */

+function addRow(table_id) {

+  var tbl = document.getElementById(table_id);

+  // counting rows in table

+  var rows_count = tbl.rows.length;

+  if (initial_count[table_id] == undefined) {

+    // if it is first adding in this table setting initial rows count

+    initial_count[table_id] = rows_count;

+  }

+  // determining real count of added fields

+  var tFielsNum =  rows_count - initial_count[table_id];

+  if (rows_limit!=0 && tFielsNum >= rows_limit) return false;

+  

+  var remove = '<input type = "image" src = "/themes/<?echo $g['theme'];?>/images/icons/icon_x.gif" onclick="removeRow(\''+table_id+'\',this.parentNode.parentNode)" value = "Delete" />';

+  

+  try {

+    var newRow = tbl.insertRow(rows_count);

+    var newCell = newRow.insertCell(0);

+    newCell.innerHTML = fillProtocol();

+    var newCell = newRow.insertCell(1);

+    newCell.innerHTML = fillStructure();

+    var newCell = newRow.insertCell(2);

+    newCell.innerHTML = fillBehaviour();

+    var newCell = newRow.insertCell(3);

+    newCell.innerHTML = remove;

+  }   

+  catch (ex) {

+    //if exception occurs

+    alert(ex);

+  }   

+}

+

+/* Remove row from the table */

+function removeRow(tbl,row) {

+  var table = document.getElementById(tbl);

+  try {

+    table.deleteRow(row.rowIndex);

+  } catch (ex) {

+    alert(ex);

+  }

+}

+</script>

+

+<?php

+include("fbegin.inc"); 

+?>

+<div id="inputerrors"></div>

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

+

+<form action="firewall_shaper_layer7.php" method="post" id="iform" name="iform">

+

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

+<?php if (file_exists($d_shaperconfdirty_path)): ?><p>

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

+<?php endif; ?>

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

+  <tr><td>

+<?php

+	$tab_array = array();

+	$tab_array[0] = array("By Interface", false, "firewall_shaper.php");

+	$tab_array[1] = array("By Queue", false, "firewall_shaper_queues.php");

+	$tab_array[2] = array("Limiter", false, "firewall_shaper_vinterface.php");

+	$tab_array[3] = array("Layer7", true, "firewall_shaper_layer7.php");

+	$tab_array[4] = array("Wizards", false, "firewall_shaper_wizards.php");

+	display_top_tabs($tab_array);

+?>

+  </td></tr>

+  <tr>

+    <td>

+	<div id="mainarea">

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

+		

+		<?php if (count($layer7_rules_list) > 0): ?>

+                        <tr class="tabcont"><td width="25%" align="left">

+                        </td><td width="75%"> </td></tr>

+		

+		<? endif; ?>

+			<tr>

+			<td width="25%" valign="top" algin="left">

+			<?php

+				echo $tree; 

+			?>

+			<br/><br/>

+			<a href="firewall_shaper_layer7.php?action=add">

+			<img src="./themes/<?=$g['theme']; ?>/images/icons/icon_plus.gif" title="Create new l7 rules group" width="17" height="17" border="0">  Create new l7 rules group

+			</a><br/>

+			</td>

+			<td width="75%" valign="top" align="center">

+			<table>

+			<?

+				echo $output;

+			?>

+			

+			<!-- Layer 7 rules form -->

+			<?php if($show_proto_form): ?>

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

+                                <div id = "addressnetworkport">

+                                        Rule(s)

+                                </div>

+                        </td>

+

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

+                                <table width="236" id = "maintable">

+					<tbody>

+                                                    

+						<tr>

+                                                        <td colspan = "4">

+                                                            <div style = "font-size: 8pt; padding:5px; margin-top: 16px; margin-bottom: 16px; border:1px dashed #000066;"

+                                                                id = "itemhelp">

+                                                                Add one or more rules

+                                                            </div>

+                                                        </td>

+                                                </tr>

+

+                                                <tr>

+                                                        <td>

+                                                            <div style = "font-size: 8pt; padding:5px;"

+                                                                id = "onecolumn">

+                                                                Protocol

+                                                            </div>

+                                                        </td>

+

+                                                        <td>

+                                                            <div style = "font-size: 8pt; padding:5px;"

+                                                                id = "twocolumn">

+                                                                Structure

+                                                            </div>

+                                                        </td>

+

+                                                        <td>

+                                                            <div style = "font-size: 8pt; padding:5px;"

+                                                                id = "threecolumn">

+                                                                Behaviour

+                                                            </div>

+                                                        </td>

+                                                </tr>                                                                                                        

+                                                <!-- PHP Code to generate the existing rules -->

+						<?php

+						if($container) {

+							foreach($container->rsets as $l7rule) {

+						?>

+						<tr>

+							<td>

+							<select name="protocol[]" class="formselect" id="protocol" style="font-size:8pt">

+							<?php foreach($avail_protos as $proto): ?>

+							<option value="<?=$proto;?>" <?php if ($proto == $l7rule->GetRProtocol()) echo "selected"; ?>><?=$proto;?></option>

+							<? endforeach; ?>

+							</select>

+						</td>

+						<td>

+							<select name="structure[]" class="formselect" id="structure" style="font-size:8pt" onchange="changeBehaviourValues(this.parentNode.parentNode);">

+							<?php foreach($avail_structures as $struct) {

+							  if($struct == "queue") {

+							    if(!empty($avail_behaviours_altq)) { ?>

+							      <option value="<?=$struct ?>" <?php if ($struct == $l7rule->GetRStructure()) echo "selected"; ?>><?=$struct;?></option>

+							    <?php }

+							  }

+							  else {

+							    if($struct == "limiter") {

+								if(!empty($avail_behaviours_limiter)) { ?>

+								  <option value="<?=$struct ?>" <?php if ($struct == $l7rule->GetRStructure()) echo "selected"; ?>><?=$struct;?></option>

+								<?php }

+							    }

+							    else {

+							      if($struct == "action") { ?>

+								  <option value="<?=$struct ?>" <?php if ($struct == $l7rule->GetRStructure()) echo "selected"; ?>><?=$struct;?></option>

+							      <?php }							      							      

+							    }

+							  }

+							} ?>

+							</select>

+						</td>

+						<td>

+							<select name="behaviour[]" class="formselect" id="behaviour" style="width:80px; font-size:8pt">

+							<?php if($l7rule->GetRStructure() == "action"): ?>

+								<?php foreach($avail_behaviours_action as $behaviour): ?>

+								<option value="<?=$behaviour ?>" <?php if ($behaviour == $l7rule->GetRBehaviour()) echo "selected"; ?>><?=$behaviour;?></option>

+								<? endforeach; ?>

+								</select>

+							<? endif; ?>

+							<?php if($l7rule->GetRStructure() == "queue"): ?>

+								<?php foreach($avail_behaviours_altq as $behaviour): ?>

+								<option value="<?=$behaviour ?>" <?php if ($behaviour == $l7rule->GetRBehaviour()) echo "selected"; ?>><?=$behaviour;?></option>

+								<? endforeach; ?>

+								</select>

+							<? endif; ?>

+							<?php if($l7rule->GetRStructure() == "limiter"): ?>

+								<?php foreach($avail_behaviours_limiter as $behaviour): ?>

+								<option value="<?=$behaviour ?>" <?php if ($behaviour == $l7rule->GetRBehaviour()) echo "selected"; ?>><?=$behaviour;?></option>

+								<? endforeach; ?>

+								</select>

+							<? endif; ?>							

+						</td>

+						<td>

+							<input type="image" src="/themes/<? echo $g['theme'];?>/images/icons/icon_x.gif" onclick="removeRow('maintable',this.parentNode.parentNode); return false;" value="Delete" />

+						</td>

+						</tr>

+						

+						<?php

+							} //end foreach

+						} //end if

+						?>  

+                                        </tbody>

+

+                                        <tfoot>

+                                        </tfoot>

+                                </table>

+

+                                        <a onclick = "javascript:addRow('maintable'); return false;" href="#"> <img border = "0"

+                                                src = "/themes/<?=$g['theme']; ?>/images/icons/icon_plus.gif"

+                                                alt = "" title = "add another entry" /> </a>

+                        </td>

+			</tr>

+

+                        <tr>

+                        <td width = "22%" valign = "top">

+                                &nbsp;

+                        </td>

+

+                        <td width = "78%">

+                                <input id = "submit"

+                                name = "submit" type = "submit" class = "formbtn" value = "Save" />

+

+				<a href= "firewall_shaper_layer7.php">

+                                <input id = "cancelbutton"

+                                name = "cancelbutton" type = "button" class = "formbtn" value = "Cancel" /></a>

+				

+				<?php if($container): ?>

+						<input id = "delete" type="submit" class="formbtn" name="delete" value="Delete"></a>

+				<? endif ?>

+                        </td>

+                        </tr>

+			<? endif; ?>

+			<!-- End of layer7 rules form -->

+			</table>

+

+		      </td></tr>

+                    </table>

+		</div>

+	  </td>

+	</tr>

+</table>

+</form>

+

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

+?>

+</body>

+</html>
\ No newline at end of file