#!/usr/bin/php
<?php
/*
* Daily cron script to backup the monowall hardware router
* The program requests the monowall webgui for the configuration
* XML file, used for settings and backup/restore.
*
* Written by Kaspar Lyngsie <backupmonowall(a)pacroon.dk>
*/

/* Change these settings to reflect your setup! */
$username = "admin";
$password = "mono";
$m0n0wall_url = "http://192.168.1.1";	/* https requires PHP to be compiled with OpenSSL support */
$targetpath = "/home/user/backup";

function post($data, $url, $username, $password, $timeout=30) {

	$url_array = parse_url($url);
	$query = "";

	foreach ($data as $key => $value) {
		if ($query) $query .= "&";
		$query .= $key . "=" . urlencode($value);
	}
	
	$len = strlen($query);
	
	$headers =
	"POST " . $url_array['path'] . "?" . $url_array['query'] . " HTTP/1.1\r\n".
	"Host: {$url_array['host']}\r\n".
	"User-Agent: PHP/" . phpversion() . "\r\n" .
	"Authorization: Basic " . base64_encode("{$username}:{$password}") . "\r\n" .
	"Content-Type: application/x-www-form-urlencoded\r\n".
	"Content-Length: $len\r\n\r\n" . $query;
	
	if ($url_array['scheme'] == "https")
		$socket = fsockopen("ssl://" . $url_array['host'], 443, $errno, $errstr, $timeout);
	else
		$socket = fsockopen($url_array['host'], 80, $errno, $errstr, $timeout);
	
	if (!$socket) {
		return false;
	} else {
		fputs($socket, $headers);
		
		$header = $body = "";
		$isbody = false;
		
		while (!feof($socket)) {
			$line = fgets($socket);
			
			if ($line == "\r\n") {
				if (!$isbody) {
					$isbody = true;
					continue;
				}
			}
	
			if ($isbody)
				$body .= $line;
			else
				$header .= $line;
		}
		
		return array($header,$body);
	}
}

$data = array("Submit" => "Download configuration");

list($header,$body) = post($data, "{$m0n0wall_url}/diag_backup.php", $username, $password);

preg_match("/filename=(.+?)\r\n/i", $header, $filename);

$fd = fopen($targetpath . "/" . $filename[1], "w");
fwrite($fd, $body);
fclose($fd);

?>