<?php
/* $Id$ */
/*
	carp_status.php
*/
/* ====================================================================
 *  Copyright (c)  2004-2015  Electric Sheep Fencing, LLC. All rights reserved. 
 *  Copyright (c)  2004, 2005 Scott Ullrich
 *
 *  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.
 *
 *  ====================================================================
 *
 */

##|+PRIV
##|*IDENT=page-status-carp
##|*NAME=Status: CARP page
##|*DESCR=Allow access to the 'Status: CARP' page.
##|*MATCH=carp_status.php*
##|-PRIV

/*
	pfSense_MODULE:	carp
*/

require_once("guiconfig.inc");
require_once("globals.inc");

function gentitle_pkg($pgname) {
	global $config;
	return $config['system']['hostname'] . "." . $config['system']['domain'] . " - " . $pgname;
}

unset($interface_arr_cache);
unset($carp_interface_count_cache);
unset($interface_ip_arr_cache);

$status = get_carp_status();
$status = intval($status);
if ($_POST['carp_maintenancemode'] <> "") {
	interfaces_carp_set_maintenancemode(!isset($config["virtualip_carp_maintenancemode"]));
}
if ($_POST['disablecarp'] <> "") {
	if ($status > 0) {
		set_single_sysctl('net.inet.carp.allow', '0');
		if (is_array($config['virtualip']['vip'])) {
			$viparr = &$config['virtualip']['vip'];
			$found_dhcpdv6 = false;
			foreach ($viparr as $vip) {
				$carp_iface = "{$vip['interface']}_vip{$vip['vhid']}";
				switch ($vip['mode']) {
					case "carp":
						interface_vip_bring_down($vip);
						interface_ipalias_cleanup($carp_iface);

						/*
						 * Reconfigure radvd when necessary
						 * XXX: Is it the best way to do it?
						 */
						if (isset($config['dhcpdv6']) && is_array($config['dhcpdv6'])) {
							foreach ($config['dhcpdv6'] as $dhcpv6if => $dhcpv6ifconf) {
								if ($dhcpv6ifconf['rainterface'] != $carp_iface) {
									continue;
								}

								services_radvd_configure();
								break;
							}
						}

						sleep(1);
						break;
				}
			}
		}
		$savemsg = sprintf(gettext("%s IPs have been disabled. Please note that disabling does not survive a reboot and some configuration changes will re-enable."), $carp_counter);
		$status = 0;
	} else {
		$savemsg = gettext("CARP has been enabled.");
		if (is_array($config['virtualip']['vip'])) {
			$viparr = &$config['virtualip']['vip'];
			foreach ($viparr as $vip) {
				switch ($vip['mode']) {
					case "carp":
						interface_carp_configure($vip);
						sleep(1);
						break;
					case 'ipalias':
						if (strpos($vip['interface'], '_vip')) {
							interface_ipalias_configure($vip);
						}
						break;
				}
			}
		}
		interfaces_sync_setup();
		set_single_sysctl('net.inet.carp.allow', '1');
		$status = 1;
	}
}

$carp_detected_problems = get_single_sysctl("net.inet.carp.demotion");

if (!empty($_POST['resetdemotion'])) {
	set_single_sysctl("net.inet.carp.demotion", "-{$carp_detected_problems}");
	sleep(1);
	$carp_detected_problems = get_single_sysctl("net.inet.carp.demotion");
}

$pgtitle = array(gettext("Status"), gettext("CARP"));
$shortcut_section = "carp";
include("head.inc");
?>
<form action="carp_status.php" method="post">
<?php if ($savemsg) print_info_box($savemsg); ?>

<?PHP if ($carp_detected_problems > 0) {
	print_info_box(
		gettext("CARP has detected a problem and this unit has been demoted to BACKUP status.") . "<br/>" .
		gettext("Check the link status on all interfaces with configured CARP VIPs.") . "<br/>" .
		gettext("Search the") .
		" <a href=\"/diag_logs.php?filtertext=carp%3A+demoted+by\">" .
		gettext("system log") .
		"</a> " .
		gettext("for CARP demotion-related events.") . "<br/>" .
		"<input type=\"submit\" name=\"resetdemotion\" id=\"resetdemotion\" value=\"" .
		gettext("Reset CARP Demotion Status") .
		"\" />"
	);

} ?>

<?php
$carpcount = 0;
if(is_array($config['virtualip']['vip'])) {
	foreach($config['virtualip']['vip'] as $carp) {
		if ($carp['mode'] == "carp") {
			$carpcount++;
			break;
		}
	}
}
if ($carpcount > 0):
	$carp_enabled = ($status > 0);
?>
	<input type="submit" name="disablecarp" value="<?=($carp_enabled ? gettext("Temporarily Disable CARP") : gettext("Enable CARP"))?>" />
	<input type="submit" name="carp_maintenancemode" value="<?=($config["virtualip_carp_maintenancemode"] ? gettext("Leave Persistent CARP Maintenance Mode") : gettext("Enter Persistent CARP Maintenance Mode"))?>" />
<?php elseif ($carpcount == 0): ?>
	<div class="alert alert-info" role="alert">
		<p>
			<?=gettext("Could not locate any defined CARP interfaces.")?><br/>
			<a href="system_hasync.php" class="alert-link"><?=gettext("You can configure high availability sync settings here")?></a>.
		</p>
	</div>
<?php else: ?>
<table>
	<tr>
		<td><?=gettext("CARP Interface")?></td>
		<td><?=gettext("Virtual IP")?></td>
		<td><?=gettext("Status")?></td>
	</tr>
<?php
	foreach($config['virtualip']['vip'] as $carp) {
		if ($carp['mode'] != "carp")
			continue;
		$ipaddress = $carp['subnet'];
		$vhid = $carp['vhid'];
		$status = get_carp_interface_status("{$carp['interface']}_vip{$carp['vhid']}");
		if($carp_enabled == false) {
			$icon = 'remove-sign';
			$status = "DISABLED";
		} else {
			if($status == "MASTER") {
				$icon = 'ok-sign';
			} else if($status == "BACKUP") {
				$icon = 'ok-circle';
			} else if($status == "INIT") {
				$icon = 'question-sign';
			}
		}
?>
	<tr>
		<td>
			<td><?=convert_friendly_interface_to_friendly_descr($carp['interface'])?>@<?=$vhid?></td>
			<td><?=$ipaddress?></td>
			<td><i class="icon icon-<?=$icon?>">$status</i></td>
	</tr>
<?php }?>
</table>
</form>
<?php endif?>

<h4><?=gettext("pfSync nodes")?></h4>
<ul>
<?php
	foreach (explode("\n", exec_command("/sbin/pfctl -vvss | /usr/bin/grep creator | /usr/bin/cut -d\" \" -f7 | /usr/bin/sort -u")) as $node)
		echo '<li>'. $node .'</li>';
?>
</ul>

<?php include("foot.inc")?>