kimbtech/proxy.php

## proxy.php
<?php
/*

# nginx conf.

# proxy
# 	/proxy/<hostname>/?<url>
#	url has to be written using ip, no hostname, cause no dns lookup is done!
location ~* "^/proxy/([^/]*)/?.*$" {
	internal;

	proxy_pass $args;
	proxy_set_header Host $1;
	proxy_buffering off;
	proxy_connect_timeout 5s;
	proxy_redirect https://$1/ /stream.php?url=https://$1/;
	proxy_redirect http://$1/ /stream.php?url=http://$1/;
}

*/

error_reporting(E_ALL);
define('ALLOW_LOCAL_PROXY', true);
// station known?
if( isset($_GET['url']) ){

	$url = $_GET['url'];
	if( !empty($url) ){
		$url = filter_var( $url, FILTER_SANITIZE_URL, FILTER_FLAG_HOST_REQUIRED | FILTER_FLAG_SCHEME_REQUIRED); //clean url

		// get hostname and url parts before and after
		$matches = array();
		$matchok = preg_match( '/^(https?:\/\/)([^\/]+\.?[a-zA-Z]+)((?::[0-9]+)?(?:\/.*)?)$/', $url, $matches ); // get host
		$host = $matches[2];

		// host ok?
		if( $matchok === 1 ){
			// check ip address
			$ip = gethostbyname( $host );
			// create url using ip
			$url = $matches[1] . $ip . $matches[3];
			// allow only external ips
			if( ALLOW_LOCAL_PROXY || filter_var( $ip, FILTER_VALIDATE_IP, FILTER_FLAG_NO_PRIV_RANGE |  FILTER_FLAG_NO_RES_RANGE) !== false ){
				//let nginx do the rest
				header("X-Accel-Redirect: /proxy/". $host ."/?" . $url );
				die();
			}
		}
	}
}
?>
<html>
	<body>
		<form action="" method="get">
			<input type="url" name="url">
			<input type="submit" value="Öffnen">
		</form>
	</body>
</html>
	<?php
	/*

	# nginx conf.

	# proxy
	# /proxy/<hostname>/?<url>
	# url has to be written using ip, no hostname, cause no dns lookup is done!
	location ~* "^/proxy/([^/])/?.$" {
	internal;

	proxy_pass $args;
	proxy_set_header Host $1;
	proxy_buffering off;
	proxy_connect_timeout 5s;
	proxy_redirect https://$1/ /stream.php?url=https://$1/;
	proxy_redirect http://$1/ /stream.php?url=http://$1/;
	}

	*/

	error_reporting(E_ALL);
	define('ALLOW_LOCAL_PROXY', true);
	// station known?
	if( isset($_GET['url']) ){

	$url = $_GET['url'];
	if( !empty($url) ){
	$url = filter_var( $url, FILTER_SANITIZE_URL, FILTER_FLAG_HOST_REQUIRED \| FILTER_FLAG_SCHEME_REQUIRED); //clean url

	// get hostname and url parts before and after
	$matches = array();
	$matchok = preg_match( '/^(https?:\/\/)([^\/]+\.?[a-zA-Z]+)((?::[0-9]+)?(?:\/.*)?)$/', $url, $matches ); // get host
	$host = $matches[2];

	// host ok?
	if( $matchok === 1 ){
	// check ip address
	$ip = gethostbyname( $host );
	// create url using ip
	$url = $matches[1] . $ip . $matches[3];
	// allow only external ips
	if( ALLOW_LOCAL_PROXY \|\| filter_var( $ip, FILTER_VALIDATE_IP, FILTER_FLAG_NO_PRIV_RANGE \| FILTER_FLAG_NO_RES_RANGE) !== false ){
	//let nginx do the rest
	header("X-Accel-Redirect: /proxy/". $host ."/?" . $url );
	die();
	}
	}
	}
	}
	?>
	<html>
	<body>
	<form action="" method="get">
	<input type="url" name="url">
	<input type="submit" value="Öffnen">
	</form>
	</body>
	</html>