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<?php
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/* $Id$ */
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/*
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firewall_aliases.php
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Copyright (C) 2004 Scott Ullrich
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Copyright (C) 2013-2015 Electric Sheep Fencing, LP
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All rights reserved.
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originally part of m0n0wall (http://m0n0.ch/wall)
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Copyright (C) 2003-2004 Manuel Kasper <mk@neon1.net>.
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All rights reserved.
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Redistribution and use in source and binary forms, with or without
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modification, are permitted provided that the following conditions are met:
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1. Redistributions of source code must retain the above copyright notice,
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this list of conditions and the following disclaimer.
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2. Redistributions in binary form must reproduce the above copyright
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notice, this list of conditions and the following disclaimer in the
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documentation and/or other materials provided with the distribution.
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THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES,
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INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY
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AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
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AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY,
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OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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POSSIBILITY OF SUCH DAMAGE.
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*/
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/*
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pfSense_MODULE: aliases
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*/
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##|+PRIV
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##|*IDENT=page-firewall-aliases
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##|*NAME=Firewall: Aliases page
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##|*DESCR=Allow access to the 'Firewall: Aliases' page.
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##|*MATCH=firewall_aliases.php*
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##|-PRIV
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require("guiconfig.inc");
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require_once("functions.inc");
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require_once("filter.inc");
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require_once("shaper.inc");
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if (!is_array($config['aliases']['alias'])) {
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$config['aliases']['alias'] = array();
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}
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$a_aliases = &$config['aliases']['alias'];
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$tab = ($_REQUEST['tab'] == "" ? "ip" : preg_replace("/\W/","",$_REQUEST['tab']));
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if ($_POST) {
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if ($_POST['apply']) {
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$retval = 0;
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/* reload all components that use aliases */
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$retval = filter_configure();
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if (stristr($retval, "error") <> true) {
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$savemsg = get_std_save_message($retval);
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} else {
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$savemsg = $retval;
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}
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if ($retval == 0) {
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clear_subsystem_dirty('aliases');
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}
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}
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}
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if ($_GET['act'] == "del") {
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if ($a_aliases[$_GET['id']]) {
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/* make sure rule is not being referenced by any nat or filter rules */
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$is_alias_referenced = false;
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$referenced_by = false;
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$alias_name = $a_aliases[$_GET['id']]['name'];
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// Firewall rules
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find_alias_reference(array('filter', 'rule'), array('source', 'address'), $alias_name, $is_alias_referenced, $referenced_by);
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find_alias_reference(array('filter', 'rule'), array('destination', 'address'), $alias_name, $is_alias_referenced, $referenced_by);
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find_alias_reference(array('filter', 'rule'), array('source', 'port'), $alias_name, $is_alias_referenced, $referenced_by);
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find_alias_reference(array('filter', 'rule'), array('destination', 'port'), $alias_name, $is_alias_referenced, $referenced_by);
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// NAT Rules
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find_alias_reference(array('nat', 'rule'), array('source', 'address'), $alias_name, $is_alias_referenced, $referenced_by);
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find_alias_reference(array('nat', 'rule'), array('source', 'port'), $alias_name, $is_alias_referenced, $referenced_by);
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find_alias_reference(array('nat', 'rule'), array('destination', 'address'), $alias_name, $is_alias_referenced, $referenced_by);
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find_alias_reference(array('nat', 'rule'), array('destination', 'port'), $alias_name, $is_alias_referenced, $referenced_by);
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find_alias_reference(array('nat', 'rule'), array('target'), $alias_name, $is_alias_referenced, $referenced_by);
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find_alias_reference(array('nat', 'rule'), array('local-port'), $alias_name, $is_alias_referenced, $referenced_by);
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// NAT 1:1 Rules
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//find_alias_reference(array('nat', 'onetoone'), array('external'), $alias_name, $is_alias_referenced, $referenced_by);
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//find_alias_reference(array('nat', 'onetoone'), array('source', 'address'), $alias_name, $is_alias_referenced, $referenced_by);
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find_alias_reference(array('nat', 'onetoone'), array('destination', 'address'), $alias_name, $is_alias_referenced, $referenced_by);
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// NAT Outbound Rules
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find_alias_reference(array('nat', 'advancedoutbound', 'rule'), array('source', 'network'), $alias_name, $is_alias_referenced, $referenced_by);
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find_alias_reference(array('nat', 'advancedoutbound', 'rule'), array('sourceport'), $alias_name, $is_alias_referenced, $referenced_by);
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find_alias_reference(array('nat', 'advancedoutbound', 'rule'), array('destination', 'address'), $alias_name, $is_alias_referenced, $referenced_by);
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find_alias_reference(array('nat', 'advancedoutbound', 'rule'), array('dstport'), $alias_name, $is_alias_referenced, $referenced_by);
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find_alias_reference(array('nat', 'advancedoutbound', 'rule'), array('target'), $alias_name, $is_alias_referenced, $referenced_by);
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// Alias in an alias
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find_alias_reference(array('aliases', 'alias'), array('address'), $alias_name, $is_alias_referenced, $referenced_by);
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// Load Balancer
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find_alias_reference(array('load_balancer', 'lbpool'), array('port'), $alias_name, $is_alias_referenced, $referenced_by);
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find_alias_reference(array('load_balancer', 'virtual_server'), array('port'), $alias_name, $is_alias_referenced, $referenced_by);
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// Static routes
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find_alias_reference(array('staticroutes', 'route'), array('network'), $alias_name, $is_alias_referenced, $referenced_by);
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if ($is_alias_referenced == true) {
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$savemsg = sprintf(gettext("Cannot delete alias. Currently in use by %s"), $referenced_by);
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} else {
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unset($a_aliases[$_GET['id']]);
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if (write_config()) {
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filter_configure();
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mark_subsystem_dirty('aliases');
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}
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header("Location: firewall_aliases.php?tab=" . $tab);
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exit;
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}
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}
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}
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function find_alias_reference($section, $field, $origname, &$is_alias_referenced, &$referenced_by) {
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global $config;
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if (!$origname || $is_alias_referenced) {
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return;
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}
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$sectionref = &$config;
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foreach ($section as $sectionname) {
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if (is_array($sectionref) && isset($sectionref[$sectionname])) {
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$sectionref = &$sectionref[$sectionname];
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} else {
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return;
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}
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}
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if (is_array($sectionref)) {
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foreach ($sectionref as $itemkey => $item) {
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$fieldfound = true;
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$fieldref = &$sectionref[$itemkey];
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foreach ($field as $fieldname) {
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if (is_array($fieldref) && isset($fieldref[$fieldname])) {
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$fieldref = &$fieldref[$fieldname];
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} else {
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$fieldfound = false;
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break;
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}
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}
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if ($fieldfound && $fieldref == $origname) {
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$is_alias_referenced = true;
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if (is_array($item)) {
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$referenced_by = $item['descr'];
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}
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break;
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}
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}
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}
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}
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$pgtitle = array(gettext("Firewall"),gettext("Aliases"));
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$shortcut_section = "aliases";
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include("head.inc");
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?>
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<body link="#0000CC" vlink="#0000CC" alink="#0000CC">
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<?php include("fbegin.inc"); ?>
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<form action="firewall_aliases.php" method="post">
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<?php if ($savemsg) print_info_box($savemsg); ?>
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<?php if (is_subsystem_dirty('aliases')): ?><p>
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<?php print_info_box_np(gettext("The alias list has been changed.") . "<br />" . gettext("You must apply the changes in order for them to take effect."));?>
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<?php endif; ?>
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<?php pfSense_handle_custom_code("/usr/local/pkg/firewall_aliases/pre_table"); ?>
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<table width="100%" border="0" cellpadding="0" cellspacing="0" summary="firewall aliases">
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<tr>
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<td class="tabnavtbl">
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<?php
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$tab_array = array();
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$tab_array[] = array(gettext("IP"),($tab=="ip" ? true : ($tab=="host" ? true : ($tab == "network" ? true : false))), "/firewall_aliases.php?tab=ip");
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$tab_array[] = array(gettext("Ports"), ($tab=="port"? true : false), "/firewall_aliases.php?tab=port");
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$tab_array[] = array(gettext("URLs"), ($tab=="url"? true : false), "/firewall_aliases.php?tab=url");
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$tab_array[] = array(gettext("All"), ($tab=="all"? true : false), "/firewall_aliases.php?tab=all");
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display_top_tabs($tab_array);
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?>
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<input type="hidden" name="tab" value="<?=htmlspecialchars($tab);?>" />
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</td>
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</tr>
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<tr>
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<td>
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<div id="mainarea">
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<table class="tabcont" width="100%" border="0" cellpadding="0" cellspacing="0" summary="main area">
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<tr>
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<td width="20%" class="listhdrr"><?=gettext("Name"); ?></td>
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<td width="43%" class="listhdrr"><?=gettext("Values"); ?></td>
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<td width="30%" class="listhdr"><?=gettext("Description"); ?></td>
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<td width="7%" class="list">
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<table border="0" cellspacing="0" cellpadding="1" summary="add">
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<tr>
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<td valign="middle" width="17"> </td>
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<td valign="middle"><a href="firewall_aliases_edit.php?tab=<?=$tab?>"><img src="/themes/<?= $g['theme']; ?>/images/icons/icon_plus.gif" width="17" height="17" border="0" <?=dom_title(gettext("Add a new alias"));?> alt="add" /></a></td>
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</tr>
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</table>
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</td>
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</tr>
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<?php
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asort($a_aliases);
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foreach ($a_aliases as $i=> $alias){
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unset ($show_alias);
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switch ($tab){
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case "all":
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$show_alias= true;
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break;
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case "ip":
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case "host":
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case "network":
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if (preg_match("/(host|network)/",$alias["type"])) {
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$show_alias= true;
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}
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break;
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case "url":
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if (preg_match("/(url)/i",$alias["type"])) {
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$show_alias= true;
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}
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break;
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case "port":
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if ($alias["type"] == "port") {
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$show_alias= true;
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}
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break;
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}
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if ($show_alias) {
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?>
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<tr>
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<td class="listlr" ondblclick="document.location='firewall_aliases_edit.php?id=<?=$i;?>';">
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<?=htmlspecialchars($alias['name']);?>
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</td>
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<td class="listr" ondblclick="document.location='firewall_aliases_edit.php?id=<?=$i;?>';">
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<?php
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if ($alias["url"]) {
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echo $alias["url"] . "<br />";
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} else {
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if (is_array($alias["aliasurl"])) {
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$aliasurls = implode(", ", array_slice($alias["aliasurl"], 0, 10));
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echo $aliasurls;
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if (count($aliasurls) > 10) {
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echo "...<br />";
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}
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echo "<br />\n";
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}
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$tmpaddr = explode(" ", $alias['address']);
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$addresses = implode(", ", array_slice($tmpaddr, 0, 10));
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echo $addresses;
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if (count($tmpaddr) > 10) {
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echo "...";
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}
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}
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?>
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</td>
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<td class="listbg" ondblclick="document.location='firewall_aliases_edit.php?id=<?=$i;?>';">
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<?=htmlspecialchars($alias['descr']);?>
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</td>
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<td valign="middle" class="list nowrap">
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<table border="0" cellspacing="0" cellpadding="1" summary="icons">
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<tr>
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<td valign="middle"><a href="firewall_aliases_edit.php?id=<?=$i;?>"><img src="/themes/<?= $g['theme']; ?>/images/icons/icon_e.gif" width="17" height="17" border="0" <?=dom_title(gettext("Edit alias")." {$alias['name']}");?> alt="edit" /></a></td>
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<td><a href="firewall_aliases.php?act=del&tab=<?=$tab;?>&id=<?=$i;?>" onclick="return confirm('<?=gettext("Do you really want to delete this alias? All elements that still use it will become invalid (e.g. filter rules)!");?>')"><img src="/themes/<?= $g['theme']; ?>/images/icons/icon_x.gif" width="17" height="17" border="0" <?=dom_title(gettext("Delete alias")." {$alias['name']}");?> alt="delete" /></a></td>
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</tr>
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</table>
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</td>
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</tr>
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<?php
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} // if ($show_alias)
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} // foreach
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?>
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<tr>
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<td colspan="3"> </td>
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<td valign="middle" class="list nowrap">
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<table border="0" cellspacing="0" cellpadding="1" summary="edit">
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<tbody>
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<tr>
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<td valign="middle">
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<a href="firewall_aliases_edit.php?tab=<?=$tab?>"><img src="/themes/<?= $g['theme']; ?>/images/icons/icon_plus.gif" width="17" height="17" border="0" <?=dom_title(gettext("Add a new alias")); ?> alt="add" /></a>
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</td>
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<td valign="middle">
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<a href="firewall_aliases_import.php"><img src="/themes/<?= $g['theme']; ?>/images/icons/icon_import_alias.gif" width="17" height="17" border="0" <?=dom_title(gettext("Bulk import aliases from list"));?> alt="import" /></a>
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</td>
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</tr>
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</tbody>
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</table>
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</td>
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</tr>
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<tr>
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<td class="tabcont" colspan="3">
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<p><span class="vexpl"><span class="red"><strong><?=gettext("Note:"); ?><br /></strong></span></span></p><div style="overflow:hidden; text-align:justify;"><p><span class="vexpl"><?=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. You can enter the name of an alias instead of the host, network or port in all fields that have a red background. The alias will be resolved according to the list above. 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."); ?></span></p></div>
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</td>
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</tr>
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</table>
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</div>
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</td>
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</tr>
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</table>
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</form>
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<?php include("fend.inc"); ?>
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</body>
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</html>
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