<?php
// Update
// works on DG814+ and WGT624
// This is a SHELL SCRIPT
if ($argv[1] == '') {
    print <<<_USAGE_

==========================================
 MRTG bandwidth getter for Netgear Routers
    by Naxxtor
==========================================

USAGE
----
php bandwidth.php model interface gateway_host [password]

    model: Either 814 or 624
    interface: WAN, LAN or WLAN (depending on support)
    gateway_host: IP or hostname of the gatewy, e.g. 192.168.1.1
    password: to access the router admin page (default: password)
Output: Standard MRTG logging output

_USAGE_;
}
$model = $argv[1];
$network = strtoupper($argv[2]);
$gateway_host = $argv[3];
$password = isset($argv[4]) ? $argv[4] : 'password';
$username = 'admin'; // the same for all netgear routers
if (($network != 'WAN') && ($network != 'LAN') && ($network != 'WLAN')) 
    exit(1);

if (($model != '624')&&($model != '814')) 
    exit(1);
if (($model == '814') && ($network == 'WLAN')) 
    die ("## DG814+ doesn't have a WLAN interface!\n\n");
$filenames = array(
        'stats'=>array(
                '814'=>'mtenstatisticTable.htm',
                '624'=>'RST_stattbl.htm'),
        'logout'=>array(
                '814'=>'logout.htm',
                '624'=>'LGO_logout.htm')
        );

$stats = array();
$err_count = 0;

$today = date("d-m-Y/H:i:s");
file_get_contents("http://$username:$password@$gateway_host/"); # get an initial auth
do {
    $file = file_get_contents("http://$username:$password@$gateway_host/{$filenames['stats'][$model]}");
    if ($file == '') {
        sleep(3);
        $err_count++;
    }
} while ($file == '' && $err_count < 5);
if ($err_count < 5) {
    if (!preg_match('/<table.*?>(.*?)<\/table>/si',$file,$table)) 
        die("\n\n# Can\'t stats table. Is someone else logged into the admin interface?\n");
    $cells = preg_split('/<\/td>/i',$table[1]);
    foreach ($cells as $key=>$value) {
        $cells[$key] = trim(strip_tags($value));
    }
    array_pop($cells); // just cuz
    $stats = array(
        'WAN' => array(
            'TxPacks'     => $cells[10],
            'RxPacks'     => $cells[11],
            'Collisions'     => $cells[12],
            'TxBps'      => $cells[13],
            'RxBps'       => $cells[14],
            'Uptime'      => $cells[15]
        ),
        'LAN' => array(
            'TxPacks'     => $cells[18],
            'RxPacks'    => $cells[19],
            'Collisions'     => $cells[20],
            'TxBps'       => $cells[21],
            'RxBps'       => $cells[22],
            'Uptime'      => $cells[23]
        ),
        'WLAN' => array(
            'TxPacks'     => $cells[25],
            'RxPacks'    => $cells[26],
            'Collisions'     => $cells[27],
            'TxBps'       => $cells[28],
            'RxBps'       => $cells[29],
            'Uptime'      => $cells[30]
        )
    );
    $output = $stats[$network]['TxBps']."\n".$stats[$network]['RxBps']."\n\n{$network}_bandwidth\n"; 
    print $output;
    file_get_contents("http://$username:$password@$gateway_host/{$filenames['logout'][$model]}");
    // Logout afterwards to free up the admin interface
} else {    
    print "## Too many errors\n##  Did you specify the correct model?\n";
}
?>