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<?php
/*
firewall_aliases.php
*/
/* ====================================================================
* Copyright (c) 2004-2015 Electric Sheep Fencing, LLC. All rights reserved.
*
* Some or all of this file is based on the m0n0wall project which is
* Copyright (c) 2004 Manuel Kasper (BSD 2 clause)
*
* 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.
*
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgment:
* "This product includes software developed by the pfSense Project
* for use in the pfSense software distribution. (http://www.pfsense.org/).
*
* 4. The names "pfSense" and "pfSense Project" must not be used to
* endorse or promote products derived from this software without
* prior written permission. For written permission, please contact
* coreteam@pfsense.org.
*
* 5. Products derived from this software may not be called "pfSense"
* nor may "pfSense" appear in their names without prior written
* permission of the Electric Sheep Fencing, LLC.
*
* 6. Redistributions of any form whatsoever must retain the following
* acknowledgment:
*
* "This product includes software developed by the pfSense Project
* for use in the pfSense software distribution (http://www.pfsense.org/).
*
* THIS SOFTWARE IS PROVIDED BY THE pfSense PROJECT ``AS IS'' AND ANY
* EXPRESSED 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 pfSense PROJECT OR
* ITS CONTRIBUTORS 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.
*
* ====================================================================
*
*/
/*
pfSense_MODULE: aliases
*/
##|+PRIV
##|*IDENT=page-firewall-aliases
##|*NAME=Firewall: Aliases page
##|*DESCR=Allow access to the 'Firewall: Aliases' page.
##|*MATCH=firewall_aliases.php*
##|-PRIV
require("guiconfig.inc");
require_once("functions.inc");
require_once("filter.inc");
require_once("shaper.inc");
if (!is_array($config['aliases']['alias'])) {
$config['aliases']['alias'] = array();
}
$a_aliases = &$config['aliases']['alias'];
$tab = ($_REQUEST['tab'] == "" ? "ip" : preg_replace("/\W/", "", $_REQUEST['tab']));
if ($_POST) {
if ($_POST['apply']) {
$retval = 0;
/* reload all components that use aliases */
$retval = filter_configure();
if (stristr($retval, "error") <> true) {
$savemsg = get_std_save_message($retval);
} else {
$savemsg = $retval;
}
if ($retval == 0) {
clear_subsystem_dirty('aliases');
}
}
}
if ($_GET['act'] == "del") {
if ($a_aliases[$_GET['id']]) {
/* make sure rule is not being referenced by any nat or filter rules */
$is_alias_referenced = false;
$referenced_by = false;
$alias_name = $a_aliases[$_GET['id']]['name'];
// Firewall rules
find_alias_reference(array('filter', 'rule'), array('source', 'address'), $alias_name, $is_alias_referenced, $referenced_by);
find_alias_reference(array('filter', 'rule'), array('destination', 'address'), $alias_name, $is_alias_referenced, $referenced_by);
find_alias_reference(array('filter', 'rule'), array('source', 'port'), $alias_name, $is_alias_referenced, $referenced_by);
find_alias_reference(array('filter', 'rule'), array('destination', 'port'), $alias_name, $is_alias_referenced, $referenced_by);
// NAT Rules
find_alias_reference(array('nat', 'rule'), array('source', 'address'), $alias_name, $is_alias_referenced, $referenced_by);
find_alias_reference(array('nat', 'rule'), array('source', 'port'), $alias_name, $is_alias_referenced, $referenced_by);
find_alias_reference(array('nat', 'rule'), array('destination', 'address'), $alias_name, $is_alias_referenced, $referenced_by);
find_alias_reference(array('nat', 'rule'), array('destination', 'port'), $alias_name, $is_alias_referenced, $referenced_by);
find_alias_reference(array('nat', 'rule'), array('target'), $alias_name, $is_alias_referenced, $referenced_by);
find_alias_reference(array('nat', 'rule'), array('local-port'), $alias_name, $is_alias_referenced, $referenced_by);
// NAT 1:1 Rules
//find_alias_reference(array('nat', 'onetoone'), array('external'), $alias_name, $is_alias_referenced, $referenced_by);
//find_alias_reference(array('nat', 'onetoone'), array('source', 'address'), $alias_name, $is_alias_referenced, $referenced_by);
find_alias_reference(array('nat', 'onetoone'), array('destination', 'address'), $alias_name, $is_alias_referenced, $referenced_by);
// NAT Outbound Rules
find_alias_reference(array('nat', 'outbound', 'rule'), array('source', 'network'), $alias_name, $is_alias_referenced, $referenced_by);
find_alias_reference(array('nat', 'outbound', 'rule'), array('sourceport'), $alias_name, $is_alias_referenced, $referenced_by);
find_alias_reference(array('nat', 'outbound', 'rule'), array('destination', 'address'), $alias_name, $is_alias_referenced, $referenced_by);
find_alias_reference(array('nat', 'outbound', 'rule'), array('dstport'), $alias_name, $is_alias_referenced, $referenced_by);
find_alias_reference(array('nat', 'outbound', 'rule'), array('target'), $alias_name, $is_alias_referenced, $referenced_by);
// Alias in an alias
find_alias_reference(array('aliases', 'alias'), array('address'), $alias_name, $is_alias_referenced, $referenced_by);
// Load Balancer
find_alias_reference(array('load_balancer', 'lbpool'), array('port'), $alias_name, $is_alias_referenced, $referenced_by);
find_alias_reference(array('load_balancer', 'virtual_server'), array('port'), $alias_name, $is_alias_referenced, $referenced_by);
// Static routes
find_alias_reference(array('staticroutes', 'route'), array('network'), $alias_name, $is_alias_referenced, $referenced_by);
if ($is_alias_referenced == true) {
$savemsg = sprintf(gettext("Cannot delete alias. Currently in use by %s"), htmlspecialchars($referenced_by));
} else {
unset($a_aliases[$_GET['id']]);
if (write_config()) {
filter_configure();
mark_subsystem_dirty('aliases');
}
header("Location: firewall_aliases.php?tab=" . $tab);
exit;
}
}
}
function find_alias_reference($section, $field, $origname, &$is_alias_referenced, &$referenced_by) {
global $config;
if (!$origname || $is_alias_referenced) {
return;
}
$sectionref = &$config;
foreach ($section as $sectionname) {
if (is_array($sectionref) && isset($sectionref[$sectionname])) {
$sectionref = &$sectionref[$sectionname];
} else {
return;
}
}
if (is_array($sectionref)) {
foreach ($sectionref as $itemkey => $item) {
$fieldfound = true;
$fieldref = &$sectionref[$itemkey];
foreach ($field as $fieldname) {
if (is_array($fieldref) && isset($fieldref[$fieldname])) {
$fieldref = &$fieldref[$fieldname];
} else {
$fieldfound = false;
break;
}
}
if ($fieldfound && $fieldref == $origname) {
$is_alias_referenced = true;
if (is_array($item)) {
$referenced_by = $item['descr'];
}
break;
}
}
}
}
$pgtitle = array(gettext("Firewall"), gettext("Aliases"));
$shortcut_section = "aliases";
include("head.inc");
if ($savemsg)
print_info_box($savemsg, 'success');
if (is_subsystem_dirty('aliases'))
print_info_box_np(gettext("The alias list has been changed.") . "<br />" . gettext("You must apply the changes in order for them to take effect."));
$tab_array = array();
$tab_array[] = array(gettext("IP"), ($tab == "ip" ? true : ($tab == "host" ? true : ($tab == "network" ? true : false))), "/firewall_aliases.php?tab=ip");
$tab_array[] = array(gettext("Ports"), ($tab == "port"? true : false), "/firewall_aliases.php?tab=port");
$tab_array[] = array(gettext("URLs"), ($tab == "url"? true : false), "/firewall_aliases.php?tab=url");
$tab_array[] = array(gettext("All"), ($tab == "all"? true : false), "/firewall_aliases.php?tab=all");
display_top_tabs($tab_array);
?>
<div class="table-responsive">
<table class="table table-striped table-hover">
<thead>
<tr>
<th><?=gettext("Name")?></th>
<th><?=gettext("Values")?></th>
<th><?=gettext("Description")?></th>
</tr>
</thead>
<tbody>
<?php
asort($a_aliases);
foreach ($a_aliases as $i => $alias):
unset ($show_alias);
switch ($tab) {
case "all":
$show_alias= true;
break;
case "ip":
case "host":
case "network":
if (preg_match("/(host|network)/", $alias["type"]))
$show_alias= true;
break;
case "url":
if (preg_match("/(url)/i", $alias["type"]))
$show_alias= true;
break;
case "port":
if ($alias["type"] == "port")
$show_alias= true;
break;
}
if ($show_alias):
?>
<tr>
<td>
<?=htmlspecialchars($alias['name'])?>
</td>
<td>
<?php
if ($alias["url"]) {
echo $alias["url"] . "<br />";
} else {
if (is_array($alias["aliasurl"])) {
$aliasurls = implode(", ", array_slice($alias["aliasurl"], 0, 10));
echo $aliasurls;
if (count($aliasurls) > 10) {
echo "…<br />";
}
echo "<br />\n";
}
$tmpaddr = explode(" ", $alias['address']);
$addresses = implode(", ", array_slice($tmpaddr, 0, 10));
echo $addresses;
if (count($tmpaddr) > 10) {
echo '…';
}
}
?>
</td>
<td>
<?=htmlspecialchars($alias['descr'])?>
</td>
<td>
<a class="fa fa-pencil" title="<?=gettext("Edit alias"); ?>" href="firewall_aliases_edit.php?id=<?=$i?>"></a>
<a class="fa fa-trash" title="<?=gettext("Delete alias")?>" href="?act=del&tab=<?=$tab?>&id=<?=$i?>"></a>
</td>
</tr>
<?php endif?>
<?php endforeach?>
</tbody>
</table>
</div>
<nav class="action-buttons">
<a href="firewall_aliases_edit.php?tab=<?=$tab?>" role="button" class="btn btn-success btn-sm">
<i class="fa fa-plus icon-embed-btn"></i>
<?=gettext("Add");?>
</a>
<a href="firewall_aliases_import.php" role="button" class="btn btn-default btn-sm">
<i class="fa fa-download icon-embed-btn"></i>
<?=gettext("Import");?>
</a>
</nav>
<!-- Information section. Icon ID must be "showinfo" and the information <div> ID must be "infoblock".
That way jQuery (in pfenseHelpers.js) will automatically take care of the display. -->
<div>
<div id="infoblock">
<?=print_info_box(gettext( 'Aliases act as placeholders for real hosts, networks or ports. They can be used to minimize the number ' .
'of changes that have to be made if a host, network or port changes. <br />' .
'You can enter the name of an alias instead of the host, network or port where indicated. The alias will be resolved according to the list above.' . '<br />' .
'If an alias cannot be resolved (e.g. because you deleted it), the corresponding element (e.g. filter/NAT/shaper rule) will be considered invalid and skipped.'), info)?>
</div>
</div>
<?php
include("foot.inc");
|