<?php 



// Ensure that the timeouts from fsockopen don't get reported as errors (possible, depends on the php server config) 

error_reporting(0); 

// Limit the amount of proxies that can be tested at any one time 

$maximum_proxies_to_test = 50; 

// Enter a password (if required) to protect the page 

$password = ''; 



// Actual proxyjudge part of the page 

function return_env_variables() 

{ 

echo '<pre>'."\n"; 

foreach ($_SERVER as $header => $value ) 

{ 

if ((strpos($header , 'REMOTE')!== false || strpos($header , 'HTTP')!== false || strpos($header , 'REQUEST')!== false) && ( strpos($header , 'HTTP_HOST') !== 0)) 

{ 

echo $header.' = '.$value."\n"; 

} 

} 

echo '</pre>'; 

} 



// Function to go away and get the page (calls through the proxy back to itself) 

function get_judge_page($proxy) 

{ 

// Depending on the server environment, this timeout setting may not be available. 

$timeout = 15; 

$proxy_cont = ''; 

list($proxy_host, $proxy_port) = explode(":", $proxy); 

$proxy_fp = fsockopen($proxy_host, $proxy_port, $errornumber, $errorstring, $timeout); 

if ($proxy_fp) 

{ 

stream_set_timeout($proxy_fp, $timeout); 

fputs($proxy_fp, "GET " . $_SERVER['SCRIPT_NAME'] . "?test HTTP/1.0\r\nHost: " . $_SERVER['SERVER_NAME'] . "\r\n\r\n"); 

while(!feof($proxy_fp)) 

{ 

$proxy_cont .= fread($proxy_fp,4096); 

} 

fclose($proxy_fp); 

$proxy_cont = substr($proxy_cont, strpos($proxy_cont,"\r\n\r\n")+4); 

} 

return $proxy_cont; 

} 



// Check for the control string to see if it's a valid fetch of the judge 

function check_valid_judge_response($page) 

{ 

if(strlen($page) < 5) 

return false; 

return strpos($page, 'REMOTE_ADDR') !== false; 

} 



// Check for the IP addresses 

function check_anonymity($page) 

{ 

if(strpos($page, $_SERVER['LOCAL_ADDR']) !== false) 

return false; 

return true; 

} 



// Takes and tests a proxy 

// 0 - Bad proxy 

// 1 - Good (non anon) proxy 

// 2 - Good (anonymous) proxy 

function test_proxy($proxy) 

{ 

$page = get_judge_page($proxy); 

if(!check_valid_judge_response($page)) 

return 0; 

if(!check_anonymity($page)) 

return 1; 

return 2; 

} 



////////// Main Page //////////// 



// If this is a judge request, just return the environmental variables 

if(getenv('QUERY_STRING') == "test") 

{ 

return_env_variables(); 

} 

// Else check whether we have been passed a list of proxies to test or not 

// Should really use $_POST but it's been left as $HTTP_POST_VARS for older versions of php (3.x) 

elseif( (isset($HTTP_POST_VARS['action']) && $HTTP_POST_VARS['action'] === 'fred') && 

(isset($HTTP_POST_VARS['proxies']) && $HTTP_POST_VARS['proxies'] != '') && 

( (strlen($password) == 0) || (isset($HTTP_POST_VARS['password']) && $HTTP_POST_VARS['password'] === $password) )) 

{ 

$proxies = explode("\n", str_replace("\r", "", $HTTP_POST_VARS['proxies']), $maximum_proxies_to_test + 1); 



// Set the overall time limit for the page execution to 10 mins 

set_time_limit(600); 



// Set up some arrays to hold the results 

$anon_proxies = array(); 

$nonanon_proxies = array(); 

$bad_proxies = array(); 



// Loop through and test the proxies 

for($thisproxy = 0; $thisproxy < ($maximum_proxies_to_test > count($proxies) ? count($proxies) : $maximum_proxies_to_test); $thisproxy += 1) 

{ 

$draculalol = htmlspecialchars($proxies[$thisproxy]); 

echo '' . $draculalol . ''; 

flush(); 

switch(test_proxy($proxies[$thisproxy])) 

{ 

case 2: 

echo ' - <font color="green">Анонимная</font><br>' . "\n"; 

$anon_proxies[count($anon_proxies)] = $proxies[$thisproxy]; 

break; 

case 1: 

echo ' - <font color="yellow">Не анонимная</font><br>' . "\n"; 

$nonanon_proxies[count($nonanon_proxies)] = $proxies[$thisproxy]; 

break; 

case 0: 

echo ' - <font color="red">Не рабочая</font><br>' . "\n"; 

$bad_proxies[count($bad_proxies)] = $proxies[$thisproxy]; 

break; 

} 

} 



echo '<pre>'; 

echo '<br><b><font color="green" size="2">Анонимные прокси:</font></b>' . "\n"; 

for($thisproxy = 0; $thisproxy < count($anon_proxies); $thisproxy += 1) 

echo $anon_proxies[$thisproxy] . "\n"; 

echo '<br><b><font color="yellow" size="2">Не анонимные прокси:</font></b>' . "\n"; 

for($thisproxy = 0; $thisproxy < count($nonanon_proxies); $thisproxy += 1) 

echo $nonanon_proxies[$thisproxy] . "\n"; 

echo '<br><b><font color="red" size="2">Не рабочие прокси:</font></b>' . "\n"; 

for($thisproxy = 0; $thisproxy < count($bad_proxies); $thisproxy += 1) 

$xek = htmlspecialchars($bad_proxies[$thisproxy]);

echo $xek . "\n"; 

echo '</pre>'; 

} 

// Just a blank call of the page - show the form for the user to fill in 

else 

{ 



echo '<form method="POST" action="' . $_SERVER['SCRIPT_NAME'] . '">' . "\n"; 

echo '<input type="hidden" name="action" value="fred">' . "\n"; 

echo '<textarea name="proxies" cols=50 rows=10></textarea><br>' . "\n"; 

if(strlen($password) > 0) 

echo 'Password: <input type="password" name="password" size="15"><br>' . "\n"; 

echo '<input type="submit" value="Старт">' . "\n";

echo '</form>' . "\n"; 

} 

?>