/*
* JLibs: Common Utilities for Java
* Copyright (C) 2009 Santhosh Kumar T <santhosh.tekuri@gmail.com>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*/
package jlibs.nio.http.util;
/**
* @author Santhosh Kumar Tekuri
*/
public abstract class Challenge{
public static final String REALM = "realm";
public abstract String scheme();
public static Challenge parse(String value){
if(value==null)
return null;
int space = value.indexOf(' ');
String scheme = value.substring(0, space);
value = value.substring(space+1);
if(BasicChallenge.SCHEME.equalsIgnoreCase(scheme)){
Parser parser = new Parser(false, value);
if(!Challenge.REALM.equalsIgnoreCase(parser.lvalue()))
throw new IllegalArgumentException("realm not specified");
return new BasicChallenge(parser.rvalue());
}else if(DigestChallenge.SCHEME.equalsIgnoreCase(scheme))
return new DigestChallenge(value);
else
return new UnknownChallenge(scheme, value);
}
}