Ip überprüfung

[FLash]

hab im netz ein kleines codeschnipsel gefunden das die ip adresse ein bisschen überprüft... hab das in mein stg_ip-check eingebaut.. praktisch ist auf jeden fall erstmal das ich die dns angezeigt bekomme.. :smile:

da es in anderen foren auch öffentlich zugänglich ist will ich es euch nicht vorenthalten.. ist bestimmt nützlich :knueppel:

ihr müsst nur wissen was ihr damit anfängt :yes:


* Gets the "true" IP address of the current user
*
* @return string the ip of the user
*/
function GetTrueIP()
{
global $REMOTE_ADDR, $HTTP_CLIENT_IP;
global $HTTP_X_FORWARDED_FOR, $HTTP_X_FORWARDED, $HTTP_FORWARDED_FOR, $HTTP_FORWARDED;
global $HTTP_VIA, $HTTP_X_COMING_FROM, $HTTP_COMING_FROM;

// Get some server/environment variables values
if (empty($REMOTE_ADDR)) {
if (!empty($_SERVER) && isset($_SERVER['REMOTE_ADDR'])) {
$REMOTE_ADDR = $_SERVER['REMOTE_ADDR'];
}
else if (!empty($_ENV) && isset($_ENV['REMOTE_ADDR'])) {
$REMOTE_ADDR = $_ENV['REMOTE_ADDR'];
}
else if (@getenv('REMOTE_ADDR')) {
$REMOTE_ADDR = getenv('REMOTE_ADDR');
}
} // end if

if (empty($HTTP_CLIENT_IP)) {
if (!empty($_SERVER) && isset($_SERVER['HTTP_CLIENT_IP'])) {
$HTTP_CLIENT_IP = $_SERVER['HTTP_CLIENT_IP'];
}
else if (!empty($_ENV) && isset($_ENV['HTTP_CLIENT_IP'])) {
$HTTP_CLIENT_IP = $_ENV['HTTP_CLIENT_IP'];
}
else if (@getenv('HTTP_CLIENT_IP')) {
$HTTP_CLIENT_IP = getenv('HTTP_CLIENT_IP');
}
} // end if

if (empty($HTTP_X_FORWARDED_FOR)) {
if (!empty($_SERVER) && isset($_SERVER['HTTP_X_FORWARDED_FOR'])) {
$HTTP_X_FORWARDED_FOR = $_SERVER['HTTP_X_FORWARDED_FOR'];
}
else if (!empty($_ENV) && isset($_ENV['HTTP_X_FORWARDED_FOR'])) {
$HTTP_X_FORWARDED_FOR = $_ENV['HTTP_X_FORWARDED_FOR'];
}
else if (@getenv('HTTP_X_FORWARDED_FOR')) {
$HTTP_X_FORWARDED_FOR = getenv('HTTP_X_FORWARDED_FOR');
}
} // end if

if (empty($HTTP_X_FORWARDED)) {
if (!empty($_SERVER) && isset($_SERVER['HTTP_X_FORWARDED'])) {
$HTTP_X_FORWARDED = $_SERVER['HTTP_X_FORWARDED'];
}
else if (!empty($_ENV) && isset($_ENV['HTTP_X_FORWARDED'])) {
$HTTP_X_FORWARDED = $_ENV['HTTP_X_FORWARDED'];
}
else if (@getenv('HTTP_X_FORWARDED')) {
$HTTP_X_FORWARDED = getenv('HTTP_X_FORWARDED');
}
} // end if

if (empty($HTTP_FORWARDED_FOR)) {
if (!empty($_SERVER) && isset($_SERVER['HTTP_FORWARDED_FOR'])) {
$HTTP_FORWARDED_FOR = $_SERVER['HTTP_FORWARDED_FOR'];
}
else if (!empty($_ENV) && isset($_ENV['HTTP_FORWARDED_FOR'])) {
$HTTP_FORWARDED_FOR = $_ENV['HTTP_FORWARDED_FOR'];
}
else if (@getenv('HTTP_FORWARDED_FOR')) {
$HTTP_FORWARDED_FOR = getenv('HTTP_FORWARDED_FOR');
}
} // end if

if (empty($HTTP_FORWARDED)) {
if (!empty($_SERVER) && isset($_SERVER['HTTP_FORWARDED'])) {
$HTTP_FORWARDED = $_SERVER['HTTP_FORWARDED'];
}
else if (!empty($_ENV) && isset($_ENV['HTTP_FORWARDED'])) {
$HTTP_FORWARDED = $_ENV['HTTP_FORWARDED'];
}
else if (@getenv('HTTP_FORWARDED')) {
$HTTP_FORWARDED = getenv('HTTP_FORWARDED');
}
} // end if

if (empty($HTTP_VIA)) {
if (!empty($_SERVER) && isset($_SERVER['HTTP_VIA'])) {
$HTTP_VIA = $_SERVER['HTTP_VIA'];
}
else if (!empty($_ENV) && isset($_ENV['HTTP_VIA'])) {
$HTTP_VIA = $_ENV['HTTP_VIA'];
}
else if (@getenv('HTTP_VIA')) {
$HTTP_VIA = getenv('HTTP_VIA');
}
} // end if
if (empty($HTTP_X_COMING_FROM)) {
if (!empty($_SERVER) && isset($_SERVER['HTTP_X_COMING_FROM'])) {
$HTTP_X_COMING_FROM = $_SERVER['HTTP_X_COMING_FROM'];
}
else if (!empty($_ENV) && isset($_ENV['HTTP_X_COMING_FROM'])) {
$HTTP_X_COMING_FROM = $_ENV['HTTP_X_COMING_FROM'];
}
else if (@getenv('HTTP_X_COMING_FROM')) {
$HTTP_X_COMING_FROM = getenv('HTTP_X_COMING_FROM');
}
} // end if
if (empty($HTTP_COMING_FROM)) {
if (!empty($_SERVER) && isset($_SERVER['HTTP_COMING_FROM'])) {
$HTTP_COMING_FROM = $_SERVER['HTTP_COMING_FROM'];
}
else if (!empty($_ENV) && isset($_ENV['HTTP_COMING_FROM'])) {
$HTTP_COMING_FROM = $_ENV['HTTP_COMING_FROM'];
}
else if (@getenv('HTTP_COMING_FROM')) {
$HTTP_COMING_FROM = getenv('HTTP_COMING_FROM');
}
} // end if

// Gets the default ip sent by the user
if (!empty($REMOTE_ADDR)) {
$direct_ip = $REMOTE_ADDR;
}

// Gets the proxy ip sent by the user
$proxy_ip = '';
if (!empty($HTTP_X_FORWARDED_FOR)) {
$proxy_ip = $HTTP_X_FORWARDED_FOR;
} else if (!empty($HTTP_X_FORWARDED)) {
$proxy_ip = $HTTP_X_FORWARDED;
} else if (!empty($HTTP_FORWARDED_FOR)) {
$proxy_ip = $HTTP_FORWARDED_FOR;
} else if (!empty($HTTP_FORWARDED)) {
$proxy_ip = $HTTP_FORWARDED;
} else if (!empty($HTTP_VIA)) {
$proxy_ip = $HTTP_VIA;
} else if (!empty($HTTP_X_COMING_FROM)) {
$proxy_ip = $HTTP_X_COMING_FROM;
} else if (!empty($HTTP_COMING_FROM)) {
$proxy_ip = $HTTP_COMING_FROM;
} // end if... else if...

// Returns the true IP if it has been found, else ...
if (empty($proxy_ip)) {
// True IP without proxy
return $direct_ip;
} else {
$is_ip = ereg('^([0-9]{1,3}.){3,3}[0-9]{1,3}', $proxy_ip, $regs);

if ($is_ip && (count($regs) > 0)) {
// True IP behind a proxy
return $regs[0];
} else {

if (empty($HTTP_CLIENT_IP)) {
// Can't define IP: there is a proxy but we don't have
// information about the true IP
return "(unbekannt) " . $proxy_ip;
} else {
// better than nothing
return $HTTP_CLIENT_IP;
}
}
} // end if... else...
} // end of function

$ip = substr(getenv("REMOTE_ADDR"), 0, 14);
$true_ip = GetTrueIP();
$dns = @gethostbyaddr($ip);
$true_dns = @gethostbyaddr($true_ip);

[SebbyPHM]

"Eigentlich" ganz praktisch der Schnipsel, jedoch wird dann manchmal die lokale Netzwerk-IP genommen.

Dafür muss man noch die privaten IP-Netze 10/24, 172.16/12 und 192.168/16 ausschließen.

[FLash]

ja das könnte sein... werd sie bei mir ausschliessen.. kann das alles leider nicht veröffentlichen da ich es im addon eingebaut habe..

habe mir da ein kleines script noch dazugeschrieben das mir die beiden ip´s vergleicht..(auch auf der basis des addons) bis jetzt ist noch keiner aufgefallen... hehe.. aber bald kommt der typ der keine ip hinterlässt :knueppel:

Edit: scheint zu funktionieren.. hat mir einen proxy angezeigt