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config = array();
$this->lastLog = "";
//set default headers
$this->scan_headers = array(
'HTTP_VIA',
'HTTP_X_FORWARDED_FOR',
'HTTP_FORWARDED_FOR',
'HTTP_X_FORWARDED',
'HTTP_FORWARDED',
'HTTP_CLIENT_IP',
'HTTP_FORWARDED_FOR_IP',
'VIA',
'X_FORWARDED_FOR',
'FORWARDED_FOR',
'X_FORWARDED',
'FORWARDED',
'CLIENT_IP',
'FORWARDED_FOR_IP',
'HTTP_PROXY_CONNECTION'
);
}
/**
* VOID setHeader( STRING $trigger )
* Set new header trigger...
*/
function setHeader($trigger){
$this->scan_headers[] = $trigger;
}
/**
* ARRAY $triggers = getHeaders( VOID )
* Get all triggers in one array
*/
function getHeaders(){
return $this->scan_headers;
}
/**
* VOID setConfig( STRING $key, STRING $value)
* Set config line...
*/
function setConfig($key,$value){
$this->config[$key] = $value;
}
/**
* MIXED $config = getConfig( [STRING $key] )
* Get all config in one array, or only one config value as a string.
*/
function getConfig($key=''){
if($key)
return $this->config[$key];
else
return $this->config;
}
/**
* STRING $log = getLog( VOID )
* Get last logged information. Only works AFTER calling detect()!
*/
function getLog(){
return $this->lastLog;
}
/**
* BOOL $proxy = detect( VOID )
* Start detection and return true if a proxy server is detected...
*/
function detect(){
$log = "";
//scan all headers
foreach($this->scan_headers as $i){
//proxy detected? lets log...
if($_SERVER[$i])
$log.= "trigger $i: ".$_SERVER[$i]."\n";
}
//let's do something...
if($log){
$log = $this->lastLog = date("Y-m-d H:i:s")."\nDetected proxy server: ".gethostbyaddr($_SERVER['REMOTE_ADDR'])." ({$_SERVER['REMOTE_ADDR']})\n".$log;
//mail message
if($this->getConfig('MAIL_ALERT_TO'))
mail($this->getConfig('MAIL_ALERT_TO'),"Proxy detected at {$_SERVER['REQUEST_URI']}",$log);
//write to file
$f = $this->getConfig('LOG_FILE');
if($f){
if(is_writable($f)){
$fp = fopen($f,'a');
fwrite($fp,"$log\n");
fclose($fp);
}else{
die("Fatal Error: Couldn't write to file: '$f'
Please check if the path exists and is writable for the webserver or php...");
}
}
//done
return true;
}
//nope, no proxy was logged...
return false;
}
}
?>
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Ekran: 1024x768 
