<?php
/*
    Copyright © 2014 Deciso B.V.
    Copyright © 2004 - 2014 by Electric Sheep Fencing LLC
    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.
*/

/*
 * To change this template, choose Tools | Templates
 * and open the template in the editor.
 *
 */

require_once('guiconfig.inc');
require_once('interfaces.inc');
require_once('pfsense-utils.inc');
require_once('util.inc');

$listedIPs = "";

//get interface IP and break up into an array
$interface = $_GET['if'];
$real_interface = get_real_interface($interface);
if (!does_interface_exist($real_interface)) {
	echo gettext("Wrong Interface");
	return;
}

$intip = find_interface_ip($real_interface);
//get interface subnet
$netmask = find_interface_subnet($real_interface);
$intsubnet = gen_subnet($intip, $netmask) . "/$netmask";

// see if they want local, remote or all IPs returned
$filter = $_GET['filter'];

if ($filter == "")
	$filter = "local";

if ($filter == "local") {
	$ratesubnet = "-c " . $intsubnet;
} else {
	// Tell the rate utility to consider the whole internet (0.0.0.0/0)
	// and to consider local "l" traffic - i.e. traffic within the whole internet
	// then we can filter the resulting output as we wish below.
	$ratesubnet = "-lc 0.0.0.0/0";
}

//get the sort method
$sort = $_GET['sort'];
if ($sort == "out")
	{$sort_method = "-T";}
else
	{$sort_method = "-R";}

// get the desired format for displaying the host name or IP
$hostipformat = $_GET['hostipformat'];
$iplookup = array();
// If hostname display is requested and the DNS forwarder does not already have DHCP static names registered,
// then load the DHCP static mappings into an array keyed by IP address.
if (($hostipformat != "") && ((!isset($config['dnsmasq']['enable']) || !isset($config['dnsmasq']['regdhcpstatic']))
	|| (!isset($config['unbound']['enable']) || !isset($config['unbound']['regdhcpstatic'])))) {
	if (is_array($config['dhcpd'])) {
		foreach ($config['dhcpd'] as $ifdata) {
			if (is_array($ifdata['staticmap'])) {
				foreach ($ifdata['staticmap'] as $hostent) {
					if (($hostent['ipaddr'] != "") && ($hostent['hostname'] != "")) {
						$iplookup[$hostent['ipaddr']] = $hostent['hostname'];
					}
				}
			}
		}
	}
}

$_grb = exec("/usr/local/bin/rate -i {$real_interface} -nlq 1 -Aba 20 {$sort_method} {$ratesubnet} | tr \"|\" \" \" | awk '{ printf \"%s:%s:%s:%s:%s\\n\", $1,  $2,  $4,  $6,  $8 }'", $listedIPs);

$someinfo = false;
for ($x=2; $x<12; $x++){

    $bandwidthinfo = $listedIPs[$x];

   // echo $bandwidthinfo;
    $emptyinfocounter = 1;
    if ($bandwidthinfo != "") {
        $infoarray = explode (":",$bandwidthinfo);
		if (($filter == "all") ||
		    (($filter == "local") && (ip_in_subnet($infoarray[0], $intsubnet))) ||
		    (($filter == "remote") && (!ip_in_subnet($infoarray[0], $intsubnet)))) {
			if ($hostipformat == "") {
				$addrdata = $infoarray[0];
			} else {
				// $hostipformat is "hostname" or "fqdn"
				$addrdata = gethostbyaddr($infoarray[0]);
				if ($addrdata == $infoarray[0]) {
					// gethostbyaddr() gave us back the IP address, so try the static mapping array
					if ($iplookup[$infoarray[0]] != "")
						$addrdata = $iplookup[$infoarray[0]];
				} else {
					if ($hostipformat == "hostname") {
						// Only pass back the first part of the name, not the FQDN.
						$name_array = explode(".", $addrdata);
						$addrdata = $name_array[0];
					}
				}
			}
			//print host information;
			echo $addrdata . ";" . $infoarray[1] . ";" . $infoarray[2] . "|";

			//mark that we collected information
			$someinfo = true;
		}
	}
}
unset($bandwidthinfo, $_grb);
unset($listedIPs);

//no bandwidth usage found
if ($someinfo == false)
    echo gettext("no info");

?>
