--- fenglin/lib/client_addr.inc.php	2004/06/10 11:27:10	1.1
+++ fenglin/lib/client_addr.inc.php	2004/06/20 19:49:02	1.3
@@ -2,10 +2,41 @@
 
 function Client_Address()
 {
-	if (isset($_SERVER["HTTP_X_CLIENT_ADDR"]))
-		return $_SERVER["HTTP_X_CLIENT_ADDR"];
-	else
-		return $_SERVER["REMOTE_ADDR"];
+	$proxy_ip = array(
+		"^61.129.42.22[01]$",
+		"^203.95.5.66$",
+		"^10.85.31.[0-9]{1,3}$",
+		"^192.168.176.57$"
+	);
+
+	foreach($proxy_ip as $ip)
+	{
+		if (ereg($ip,$_SERVER["REMOTE_ADDR"]))
+		{
+			if (isset($_SERVER["HTTP_X_CLIENT_ADDR"]))
+			{
+				$client_addr = explode(",",$_SERVER["HTTP_X_CLIENT_ADDR"]);
+				for($i=count($_SERVER["HTTP_X_CLIENT_ADDR"])-1;$i>=0;$i--)
+				{
+					$proxy = false;
+					foreach($proxy_ip as $ip)
+					{
+						if (ereg($ip,$_SERVER["REMOTE_ADDR"]))
+							$proxy = true;
+					}
+					if (!$proxy)
+						return trim($client_addr[$i]);
+				}
+				return trim($client_addr[0]);
+			}
+			else
+			{
+				return $_SERVER["REMOTE_ADDR"];
+			}
+		}
+	}
+
+	return $_SERVER["REMOTE_ADDR"];
 }
 
 ?>