001/** 002 * 003 * Copyright (c) 2014, the Railo Company Ltd. All rights reserved. 004 * 005 * This library is free software; you can redistribute it and/or 006 * modify it under the terms of the GNU Lesser General Public 007 * License as published by the Free Software Foundation; either 008 * version 2.1 of the License, or (at your option) any later version. 009 * 010 * This library is distributed in the hope that it will be useful, 011 * but WITHOUT ANY WARRANTY; without even the implied warranty of 012 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 013 * Lesser General Public License for more details. 014 * 015 * You should have received a copy of the GNU Lesser General Public 016 * License along with this library. If not, see <http://www.gnu.org/licenses/>. 017 * 018 **/ 019package lucee.runtime.functions.decision; 020 021import java.net.Inet6Address; 022import java.net.InetAddress; 023import java.net.UnknownHostException; 024 025import lucee.commons.lang.StringUtil; 026import lucee.runtime.PageContext; 027import lucee.runtime.exp.PageException; 028import lucee.runtime.op.Caster; 029 030public class IsIPv6 { 031 public static boolean call(PageContext pc) throws PageException { 032 try { 033 InetAddress ia = InetAddress.getLocalHost(); 034 InetAddress[] ias = InetAddress.getAllByName(ia.getHostName()); 035 return _call(ias); 036 } 037 catch (UnknownHostException e) { 038 throw Caster.toPageException(e); 039 } 040 } 041 042 public static boolean call(PageContext pc,String hostName) throws PageException { 043 if(StringUtil.isEmpty(hostName)) return call(pc); 044 try { 045 InetAddress[] ias = InetAddress.getAllByName(hostName); 046 return _call(ias); 047 } 048 catch (UnknownHostException e) { 049 if(hostName.equalsIgnoreCase("localhost") || hostName.equals("127.0.0.1") || hostName.equalsIgnoreCase("0:0:0:0:0:0:0:1") || hostName.equalsIgnoreCase("::1")) 050 return call(pc); 051 throw Caster.toPageException(e); 052 } 053 } 054 055 056 private static boolean _call(InetAddress[] ias) { 057 for(int i=0;i<ias.length;i++) { 058 if(ias[i] instanceof Inet6Address) return true; 059 } 060 return false; 061 } 062}