wrdk/host-tools/offline-renderer/mediawiki-offline/includes/proxy_check.php

<?php
/**
 * Command line script to check for an open proxy at a specified location
 */

if( php_sapi_name() != 'cli' ) {
	die( 1 );
}

/**
 *
 */
$output = '';

/**
 * Exit if there are not enough parameters, or if it's not command line mode
 */
if ( ( isset( $_REQUEST ) && array_key_exists( 'argv', $_REQUEST ) ) || count( $argv ) < 4 ) {
	$output .= "Incorrect parameters\n";
} else {
	/**
	 * Get parameters
	 */
	$ip = $argv[1];
	$port = $argv[2];
	$url = $argv[3];
	$host = trim(`hostname`);
	$output = "Connecting to $ip:$port, target $url, this hostname $host\n";

	# Open socket
	$sock = @fsockopen($ip, $port, $errno, $errstr, 5);
	if ($errno == 0 ) {
		$output .= "Connected\n";
		# Send payload
		$request = "GET $url HTTP/1.0\r\n";
#		$request .= "Proxy-Connection: Keep-Alive\r\n";
#		$request .= "Pragma: no-cache\r\n";
#		$request .= "Host: ".$url."\r\n";
#		$request .= "User-Agent: MediaWiki open proxy check\r\n";
		$request .= "\r\n";
		@fputs($sock, $request);
		$response = fgets($sock, 65536);
		$output .= $response;
		@fclose($sock);
	} else {
		$output .= "No connection\n";
	}
}

$output = escapeshellarg( $output );

#`echo $output >> /home/tstarling/open/proxy.log`;