hallo ik heb een soort beveiliging omzijler voor school we willen op youtube(van internet)
maar als ik hem start komt youtube wel maar als je een filmpje zoekt zegt ie 404 fout want het is op mijn website hoe moet ik hem met youtube verbinden dat je op mijn website op youtube kan?
groetjes pkmartijn14
PHP:
<?php
class Proxy
{
protected $ch;
protected $prefix = 'http://youtube.com';
/**
* Array of domains whose links will be routed through the proxy
* @var array
*/
protected $blockedDomains = array('youtube.com);
/**
* Mime type of page
* @var string
*/
protected $pageType;
/**
* Callback for setting a specific banner. The DOM is given as argument
* @var callback
*/
protected $bannerCallback;
public function __construct()
{
$this->ch = curl_init();
curl_setopt($this->ch, CURLOPT_HEADER, true);
curl_setopt($this->ch, CURLOPT_RETURNTRANSFER, true);
@curl_setopt($this->ch, CURLOPT_FOLLOWLOCATION, true);
curl_setopt($this->ch, CURLOPT_MAXREDIRS, 10);
curl_setopt($this->ch, CURLOPT_USERAGENT, 'Opera/9.23 (Windows NT 5.1; U; en)');
}
/**
* @see $bannerCallback
* @param calback $callback
*/
public function setBannerCallback($callback)
{
if(!is_callable($callback))
throw new InvalidArgumentException('Argument should be callable');
$this->bannerCallback = $callback;
}
/**
* Run
* @param string $url
* @param array $get $_GET global var
* @param array $post $_POST global var
* @return string Response
*/
public function run($url, $get, $post)
{
// Use default
if(empty($url))
$url = $this->prefix;
// Decode
else
$url = $this->decodeUrl($url);
// Apppend get params to request
if($get) {
$url .= '?'.http_build_query($get);
}
curl_setopt($this->ch, CURLOPT_URL, $url);
// set optional post params
if($post) {
curl_setopt($this->ch, CURLOPT_POSTFIELDS, $post);
curl_setopt($this->ch, CURLOPT_POST, true);
}
// See below
$return = $this->curlExecFollow($this->ch);
// Throw exception on error
if($return === false)
throw new Exception($this->error());
// Strip redirect headers
$body = $return;
while(strpos($body, 'HTTP') === 0) {
list($header, $body) = explode("\r\n\r\n", $body, 2);
}
// Set response headers
$this->setResponseHeaders($header);
// Rewrite links according to page type
if($this->pageType == 'text/html')
$body = $this->rewriteHtml($body);
elseif($this->pageType == 'text/css')
$body = $this->rewriteLinksInCss($body);
return $body;
}
protected function setResponseHeaders($header)
{
// Headers that should be mapped to client
$mappedHeaders = array(
'Set-Cookie',
'Expires',
'Last-Modified',
'Cache-Control',
'Content-Type',
'Pragma'
);
// Parse headers
$headers = $this->parseHeaders($header);
foreach($headers as $name => $value) {
// If header isn't mapped, don't set it
if(!array_search($name, $mappedHeaders))
continue;
// Support for multiple values with same name
if(is_array($value))
foreach($value as $part)
header($name.': '.$part, false);
else
header($name.': '.$value);
}
// Set page type
list($this->pageType) = explode(';', $headers['Content-Type']);
}
// Parse headers into array
protected function parseHeaders($header)
{
$retVal = array();
$fields = explode("\r\n", preg_replace('/\x0D\x0A[\x09\x20]+/', ' ', $header));
foreach( $fields as $field ) {
if( preg_match('/([^:]+): (.+)/m', $field, $match) ) {
$match[1] = preg_replace('/(?<=^|[\x09\x20\x2D])./e', 'strtoupper("\0")', strtolower(trim($match[1])));
if( isset($retVal[$match[1]]) ) {
$retVal[$match[1]] = array($retVal[$match[1]], $match[2]);
} else {
$retVal[$match[1]] = trim($match[2]);
}
}
}
return $retVal;
}
/**
* Convert html for use in proxy
* @param string $source HTML input
* @return string HTML output
*/
protected function rewriteHtml($source)
{
// Use dom to easily find links
$dom = new DOMDocument;
@$dom->loadHTML($source);
// Map field to attribute name
$map = array(
'form' =>'action',
'a' => 'href',
'img' => 'src',
'script' => 'src',
'link' => 'href'
);
// Rewrite each type
foreach($map as $tagName => $attributeName) {
// Use Xpath to find all nodes
foreach($dom->getElementsByTagName($tagName) as $node) {
// Rewrite attribute accordingly
if($node->hasAttribute($attributeName)) {
$attribute = $node->getAttributeNode($attributeName);
$attribute->value = $this->rewriteLink($attribute->value);
}
}
}
// Rewrite links in <style> tag
foreach($dom->getElementsByTagName('style') as $node) {
$node->nodeValue = $this->rewriteLinksInCss($node->nodeValue);
}
// Call bannerCallback to update DOM
if(isset($this->bannerCallback)) {
$callback = $this->bannerCallback;
$dom = $callback($dom);
}
$html = $dom->saveHTML();
// Allow this ajax call to be routed trough the proxy as well
$html = str_replace("new Ajax.Updater('artistDetails', '/ajax_details_artinfo.php', {",
"new Ajax.Updater('artistDetails', '".$this->rewriteLink('/ajax_details_artinfo.php')."', {", $html);
return $html;
}
/**
* Update links in (inline) css
* @param string $css
* @return string
*/
protected function rewriteLinksInCss($css)
{
// Match on url('x') in css
return preg_replace_callback('#url\(\'?([^\'\)]+)\'?\)#', array($this, 'rewritleLinksInCssCallback'), $css);
}
/**
* Helper function
* @param array $matches
* @return string
*/
protected function rewritleLinksInCssCallback($matches) {
return "url('".$this->rewriteLink($matches[1])."')";
}
/**
* Update url so that it routes trough the proxy
* @param string $url
* @return string
*/
public function rewriteLink($url)
{
// Make relative links absolute
if(strpos($url, '/') === 0 && strpos($url, '/', 1) !== 1) {
$url = $this->prefix . $url;
// Add http: to protocol-relative links
} elseif(strpos($url, '//') === 0) {
$url = 'http:'.$url;
}
// Only rewrite blocked domains
$host = parse_url($url, PHP_URL_HOST);
foreach($this->blockedDomains as $domain) {
if(strpos($host, $domain) !== false) {
$url = $this->encodeUrl($url);
break;
}
}
return htmlentities($url);
}
/**
*
* @param string $url
* @return string
*/
protected function encodeUrl($url)
{
return base64_encode($url);
}
/**
*
* @param string $url
* @return string
*/
protected function decodeUrl($url)
{
return base64_decode($url);
}
/**
* Get error message
* @return string
*/
protected function error()
{
return curl_error($this->ch);
}
/**
* Allow redirects under safe mode
* @param curl_handle $ch
* @return string
*/
protected function curlExecFollow($ch)
{
$mr = 5;
if (ini_get('open_basedir') == '' && (ini_get('safe_mode') == 'Off' || ini_get('safe_mode') == '')) {
curl_setopt($ch, CURLOPT_FOLLOWLOCATION, $mr > 0);
curl_setopt($ch, CURLOPT_MAXREDIRS, $mr);
} else {
curl_setopt($ch, CURLOPT_FOLLOWLOCATION, false);
if ($mr > 0) {
$newurl = curl_getinfo($ch, CURLINFO_EFFECTIVE_URL);
$rch = curl_copy_handle($ch);
curl_setopt($rch, CURLOPT_HEADER, true);
curl_setopt($rch, CURLOPT_NOBODY, true);
curl_setopt($rch, CURLOPT_FORBID_REUSE, false);
curl_setopt($rch, CURLOPT_RETURNTRANSFER, true);
do {
if(strpos($newurl, '/') === 0)
$newurl = $this->prefix.$newurl;
curl_setopt($rch, CURLOPT_URL, $newurl);
$header = curl_exec($rch);
if (curl_errno($rch)) {
$code = 0;
} else {
$code = curl_getinfo($rch, CURLINFO_HTTP_CODE);
if ($code == 301 || $code == 302) {
preg_match('/Location:(.*?)\n/', $header, $matches);
$newurl = str_replace(' ', '%20', trim(array_pop($matches)));
} else {
$code = 0;
}
}
} while ($code && --$mr);
curl_close($rch);
if (!$mr) {
if ($maxredirect === null) {
trigger_error('Too many redirects. When following redirects, libcurl hit the maximum amount.', E_USER_WARNING);
} else {
$maxredirect = 0;
}
return false;
}
curl_setopt($ch, CURLOPT_URL, $newurl);
}
}
return curl_exec($ch);
}
}
try {
// Use '' al default
if(isset($_GET['url'])) {
$url = $_GET['url'];
unset($_GET['url']);
} else {
$url = '';
}
$proxy = new Proxy();
echo $proxy->run($url, $_GET, $_POST);
} catch(Exception $e) {
echo 'Error: '.$e->getMessage();
}groetjes pkmartijn14
