<?php
/**
 * @version SOFORT Gateway 5.2.0 - $Date: 2012-09-06 13:49:09 +0200 (Thu, 06 Sep 2012) $
 * @author SOFORT AG (integration@sofort.com)
 * @link http://www.sofort.com/
 *
 * Copyright (c) 2012 SOFORT AG
 *
 * Released under the GNU General Public License (Version 2)
 * [http://www.gnu.org/licenses/gpl-2.0.html]
 *
 * $Id: getContent.php 5326 2012-09-06 11:49:09Z boehm $
 *
 * Should be required once to output javascript
 */
require_once(dirname(__FILE__).'/../../helperFunctions.php');
$url = isset($_POST['url'])? $_POST['url'] : '';

if(!santiyCheck($url)) exit;
if(!urlExists($url)) exit;

switch (getDownloadMethod()) {
	case 'file_get_contents': $agb = file_get_contents($url); break;
	case 'curl':			  $agb = handleCurlDownload($url); break;
	default:				  $agb = handleSocketDownload($url); break;
}

$matches = array();
preg_match("/<\!-- content -->.*<\!-- \/content -->/s", $agb, $matches);
echo HelperFunctions::convertEncoding($matches[0], 1, 'ISO-8859-15');


function santiyCheck($url) {
	$host = parse_url($url, PHP_URL_HOST);
	return $host === 'documents.sofort.com';
}


function urlExists($url) {
	$currentErrorReporting = error_reporting(0); //get current error_reporting and set to "0"
	$urlResult = get_headers($url);
	error_reporting($currentErrorReporting);
	
	return $urlResult;
}


function getDownloadMethod() {
	if (ini_get('allow_url_fopen')) {
		$method = 'file_get_contents';
	} elseif (function_exists('curl_init')) {
		$method = 'curl';
	} else {
		$method = 'socket';
	}
	
	return $method;
}


function handleCurlDownload($url) {
	$curl_handle = curl_init();
	curl_setopt($curl_handle, CURLOPT_URL, $url);
	curl_setopt($curl_handle, CURLOPT_CONNECTTIMEOUT, 2);
	curl_setopt($curl_handle, CURLOPT_RETURNTRANSFER, true);
	curl_setopt($curl_handle, CURLOPT_SSL_VERIFYPEER, false);
	$buffer = curl_exec($curl_handle);
	curl_close($curl_handle);
	
	return $buffer;
}


function handleSocketDownload($url) {
	$uri = parse_url($url);
	$handle = fsockopen('ssl://'.$uri['host'], 443);
	
	$header  = "GET ".$uri['path']." HTTP/1.1\r\n";
	$header .= "Host: ".$uri['host']."\r\n";
	$header .= "Connection: Close\r\n\r\n";
	
	fwrite($handle, $header);
	$buffer = null;
	
	while (!feof($handle)) $buffer .= fgets($handle, 8192);
	
	fclose($handle);
	return $buffer;
}
?>