--- fenglin/lib/client_addr.inc.php	2004/06/10 11:27:10	1.1
+++ fenglin/lib/client_addr.inc.php	2010/01/07 01:28:59	1.9
@@ -1,11 +1,46 @@
 <?
+require_once "common.inc.php";
 
-function Client_Address()
+function Client_Address($addr=null,$x_addr=null)
 {
-	if (isset($_SERVER["HTTP_X_CLIENT_ADDR"]))
-		return $_SERVER["HTTP_X_CLIENT_ADDR"];
-	else
-		return $_SERVER["REMOTE_ADDR"];
+	global $SYS_proxy_ip;
+
+	$proxy_ip = $SYS_proxy_ip;
+
+	if ($addr == null)
+		$addr = $_SERVER["REMOTE_ADDR"];
+
+	if ($x_addr == null && isset($_SERVER["HTTP_X_FORWARDED_FOR"]))
+		$x_addr = $_SERVER["HTTP_X_FORWARDED_FOR"];
+
+	foreach($proxy_ip as $tmp => $ip)
+	{
+		if (preg_match("/".$ip."/",$addr))
+		{
+			if ($x_addr != null)
+			{
+				$client_addr = explode(",",$x_addr);
+				for($i=count($client_addr)-1;$i>=0;$i--)
+				{
+					$proxy = false;
+					foreach($proxy_ip as $tmp => $ip)
+					{
+						if (preg_match("/".$ip."/",$client_addr[$i]))
+							$proxy = true;
+					}
+					if (!$proxy)
+						return trim($client_addr[$i]);
+				}
+				return trim($client_addr[0]);
+			}
+			else
+			{
+				return $_SERVER["REMOTE_ADDR"];
+			}
+		}
+	}
+
+	return $_SERVER["REMOTE_ADDR"];
 }
 
 ?>