ajp13requestpacket.java

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//========================================================================
//Copyright 2006 Mort Bay Consulting Pty. Ltd.
//------------------------------------------------------------------------
//Licensed under the Apache License, Version 2.0 (the "License");
//you may not use this file except in compliance with the License.
//You may obtain a copy of the License at
//http://www.apache.org/licenses/LICENSE-2.0
//Unless required by applicable law or agreed to in writing, software
//distributed under the License is distributed on an "AS IS" BASIS,
//WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
//See the License for the specific language governing permissions and
//limitations under the License.
//========================================================================

package org.mortbay.jetty.ajp;

import org.mortbay.io.Buffer;
import org.mortbay.io.View;

/**
 * @author Markus Kobler
 * @author Greg Wilkins
 * @author Jason Jenkins <[e-mail]>
 */
public class Ajp13RequestPacket
{
    public static boolean isEmpty(Buffer _buffer)
    {
        return _buffer.length()==0;
    }

    public static int getInt(Buffer _buffer)
    {
        return ((_buffer.get()&0xFF)<<8)|(_buffer.get()&0xFF);
    }

    public static Buffer getString(Buffer _buffer, View tok)
    {
        int len=((_buffer.peek()&0xFF)<<8)|(_buffer.peek(_buffer.getIndex()+1)&0xFF);
        if (len==0xffff)
        {
            _buffer.skip(2);
            return null;
        }
        int start=_buffer.getIndex();
        tok.update(start+2,start+len+2);
        _buffer.skip(len+3);
        return tok;
    }

    public static byte getByte(Buffer _buffer)
    {
        return _buffer.get();
    }

    public static boolean getBool(Buffer _buffer)
    {
        return _buffer.get()>0;
    }

    public static Buffer getMethod(Buffer _buffer)
    {
        return Ajp13PacketMethods.CACHE.get(_buffer.get());
    }

    public static Buffer getHeaderName(Buffer _buffer, View tok)
    {
        int len=((_buffer.peek()&0xFF)<<8)|(_buffer.peek(_buffer.getIndex()+1)&0xFF);
        if ((0xFF00&len)==0xA000)
        {
            _buffer.skip(1);
            return Ajp13RequestHeaders.CACHE.get(_buffer.get());
        }
        int start=_buffer.getIndex();
        tok.update(start+2,start+len+2);
        _buffer.skip(len+3);
        return tok;

    }

    public static Buffer get(Buffer buffer, int length)
    {
        return buffer.get(length);
    }

}