Examples of org.mortbay.io.Buffer

org.mortbay.io.Buffer
Byte Buffer interface. This is a byte buffer that is designed to work like a FIFO for bytes. Puts and Gets operate on different pointers into the buffer and the valid _content of the buffer is always between the getIndex and the putIndex. This buffer interface is designed to be similar, but not dependant on the java.nio buffers, which may be used to back an implementation of this Buffer. The main difference is that NIO buffer after a put have their valid _content before the position and a flip is required to access that data. For this buffer it is always true that: markValue <= getIndex <= putIndex <= capacity @author gregw @version 1.0

    /* (non-Javadoc)
     * @see org.mortbay.jetty.AbstractBuffers#getBuffer(int)
     */
    public Buffer getBuffer(int size)
    {
        Buffer buffer;
        if (size==_applicationBufferSize)
        {   
            buffer = _applicationBuffers.poll();
            if (buffer==null)
                buffer=new IndirectNIOBuffer(size);

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      // Infer the content type based on the path of the request.
      String path = ((HttpServletRequest)request).getRequestURI();
      ContextHandler.SContext sContext = (ContextHandler.SContext)config.getServletContext();
      MimeTypes mimes = sContext.getContextHandler().getMimeTypes();
      Buffer mimeBuffer = mimes.getMimeByExtension(path);
      String mime = mimeBuffer != null ? mimeBuffer.toString() : "text/html";


      // If it is HTML (default), force the character set to utf-8.
      // This is to avoid the following security issue:
      // http://openmya.hacker.jp/hasegawa/security/utf7cs.html
      if (mime.startsWith("text/html")) {

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            }
                        
            if (body!=null)
            {
                int inc=1+body.length()/chunks;
                Buffer buf=new ByteArrayBuffer(body);
                View view = new View(buf);
                for (int i=1;i<chunks;i++)
                {
                    view.setPutIndex(i*inc);
                    view.setGetIndex((i-1)*inc);
                    hb.addContent(view,HttpGenerator.MORE);
                    if (hb.isBufferFull() && hb.isState(HttpGenerator.STATE_HEADER))
                        hb.completeHeader(fields, HttpGenerator.MORE);
                    if (i%2==0)
                    {
                        if (hb.isState(HttpGenerator.STATE_HEADER))
                        {
                            if (version<11)
                                fields.addLongField("Content-Length",body.length());
                            hb.completeHeader(fields, HttpGenerator.MORE);
                        }
                        hb.flush();
                    }
                }
                view.setPutIndex(buf.putIndex());
                view.setGetIndex((chunks-1)*inc);
                hb.addContent(view,HttpGenerator.LAST);
                if(hb.isState(HttpGenerator.STATE_HEADER))
                    hb.completeHeader(fields, HttpGenerator.LAST);
            }

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    /* (non-Javadoc)
     * @see org.mortbay.jetty.AbstractBuffers#getBuffer(int)
     */
    public Buffer getBuffer(int size)
    {
        Buffer buffer;
        if (size==_applicationBufferSize)
        {   
            buffer = _applicationBuffers.poll();
            if (buffer==null)
                buffer=new IndirectNIOBuffer(size);

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                    case FINISHED:
                    case NOT_HANDSHAKING:
                        break loop;
                        
                    case NEED_UNWRAP:
                        Buffer buffer =_buffers.getBuffer(_engine.getSession().getApplicationBufferSize());
                        try
                        {
                            ByteBuffer bbuffer = ((NIOBuffer)buffer).getByteBuffer();
                            if (!unwrap(bbuffer) && _engine.getHandshakeStatus()==HandshakeStatus.NEED_UNWRAP)
                            {

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                    }
                    
                    break;


                case NEED_UNWRAP:
                    Buffer buf =_buffers.getBuffer(_engine.getSession().getApplicationBufferSize());
                    try
                    {
                        ByteBuffer bbuf = ((NIOBuffer)buf).getByteBuffer();
                        if (!unwrap(bbuf) && _engine.getHandshakeStatus()==HandshakeStatus.NEED_UNWRAP)
                        {

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        }


        /* ------------------------------------------------------------ */
        protected void fill(Content content) throws IOException
        {
            Buffer buffer=null;
            Resource resource=content.getResource();
            long length=resource.length();


            if (_useFileMappedBuffer && resource.getFile()!=null) 
            {    
                buffer = new DirectNIOBuffer(resource.getFile());
            } 
            else 
            {
                InputStream is = resource.getInputStream();
                try
                {
                    Connector connector = HttpConnection.getCurrentConnection().getConnector();
                    buffer = ((NIOConnector)connector).getUseDirectBuffers()?
                            (NIOBuffer)new DirectNIOBuffer((int)length):
                            (NIOBuffer)new IndirectNIOBuffer((int)length);
                                
                }
                catch(OutOfMemoryError e)
                {
                    Log.warn(e.toString());
                    Log.debug(e);
                    buffer = new IndirectNIOBuffer((int) length);
                }
                buffer.readFrom(is,(int)length);
                is.close();
            }
            content.setBuffer(buffer);
        }

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                if (_buffer.length() < _packetLength)
                    return total_filled;
            }


            // Parse Header
            Buffer bufHeaderName = null;
            Buffer bufHeaderValue = null;
            int attr_type = 0;


            byte packetType = Ajp13RequestPacket.getByte(_buffer);


            switch (packetType)
            {
                case Ajp13Packet.FORWARD_REQUEST_ORDINAL:
                    _handler.startForwardRequest();
                    break;
                case Ajp13Packet.CPING_REQUEST_ORDINAL:
                    ((Ajp13Generator) _generator).sendCPong();
                    
                    if(_header != null)
                    {
                        _buffers.returnBuffer(_header);
                        _header = null;
                    }


                    if(_body != null)
                    {
                        _buffers.returnBuffer(_body);
                        _body = null;
                    }


                    _buffer= null;


                    reset(true);


                    return -1;
                case Ajp13Packet.SHUTDOWN_ORDINAL:
                    shutdownRequest();


                    return -1;


                default:
                    // XXX Throw an Exception here?? Close
                    // connection!
                    Log.warn("AJP13 message type ({PING}: "+packetType+" ) not supported/recognized as an AJP request");
                throw new IllegalStateException("PING is not implemented");
            }




            _handler.parsedMethod(Ajp13RequestPacket.getMethod(_buffer));
            _handler.parsedProtocol(Ajp13RequestPacket.getString(_buffer, _tok0));
            _handler.parsedUri(Ajp13RequestPacket.getString(_buffer, _tok1));
            _handler.parsedRemoteAddr(Ajp13RequestPacket.getString(_buffer, _tok1));
            _handler.parsedRemoteHost(Ajp13RequestPacket.getString(_buffer, _tok1));
            _handler.parsedServerName(Ajp13RequestPacket.getString(_buffer, _tok1));
            _handler.parsedServerPort(Ajp13RequestPacket.getInt(_buffer));
            _handler.parsedSslSecure(Ajp13RequestPacket.getBool(_buffer));




            _headers = Ajp13RequestPacket.getInt(_buffer);


            for (int h=0;h<_headers;h++)
            {
                bufHeaderName = Ajp13RequestPacket.getHeaderName(_buffer, _tok0);
                bufHeaderValue = Ajp13RequestPacket.getString(_buffer, _tok1);


                if (bufHeaderName != null && bufHeaderName.toString().equals(Ajp13RequestHeaders.CONTENT_LENGTH))
                {
                    _contentLength = BufferUtil.toLong(bufHeaderValue);
                    if (_contentLength == 0)
                        _contentLength = HttpTokens.NO_CONTENT;
                }


                _handler.parsedHeader(bufHeaderName, bufHeaderValue);
            }






            attr_type = Ajp13RequestPacket.getByte(_buffer) & 0xff;
            while (attr_type != 0xFF)
            {


                switch (attr_type)
                {
                    // XXX How does this plug into the web
                    // containers
                    // authentication?


                    case Ajp13RequestHeaders.REMOTE_USER_ATTR:
                        _handler.parsedRemoteUser(Ajp13RequestPacket.getString(_buffer, _tok1));
                        break;
                    case Ajp13RequestHeaders.AUTH_TYPE_ATTR:
                        _handler.parsedAuthorizationType(Ajp13RequestPacket.getString(_buffer, _tok1));
                        break;


                    case Ajp13RequestHeaders.QUERY_STRING_ATTR:
                        _handler.parsedQueryString(Ajp13RequestPacket.getString(_buffer, _tok1));
                        break;


                    case Ajp13RequestHeaders.JVM_ROUTE_ATTR:
                        // XXX Using old Jetty 5 key,
                        // should change!
                        // Note used in
                        // org.mortbay.jetty.servlet.HashSessionIdManager
                        _handler.parsedRequestAttribute("org.mortbay.http.ajp.JVMRoute", Ajp13RequestPacket.getString(_buffer, _tok1));
                        break;


                    case Ajp13RequestHeaders.SSL_CERT_ATTR:
                        _handler.parsedSslCert(Ajp13RequestPacket.getString(_buffer, _tok1));
                        break;


                    case Ajp13RequestHeaders.SSL_CIPHER_ATTR:
                        _handler.parsedSslCipher(Ajp13RequestPacket.getString(_buffer, _tok1));
                        // SslSocketConnector.customize()
                        break;


                    case Ajp13RequestHeaders.SSL_SESSION_ATTR:
                        _handler.parsedSslSession(Ajp13RequestPacket.getString(_buffer, _tok1));
                        break;


                    case Ajp13RequestHeaders.REQUEST_ATTR:
                        _handler.parsedRequestAttribute(Ajp13RequestPacket.getString(_buffer, _tok0).toString(), Ajp13RequestPacket.getString(_buffer, _tok1));
                        break;


                        // New Jk API?
                        // Check if experimental or can they
                        // assumed to be
                        // supported
                        
                    case Ajp13RequestHeaders.SSL_KEYSIZE_ATTR:
                        
                        // This has been implemented in AJP13 as either a string or a integer.
                        // Servlet specs say javax.servlet.request.key_size must be an Integer
                        
                        // Does it look like a string containing digits?
                        int length = Ajp13RequestPacket.getInt(_buffer);
                        
                        if (length>0 && length<16)
                        {
                            // this must be a string length rather than a key length
                            _buffer.skip(-2);
                            _handler.parsedSslKeySize(Integer.parseInt(Ajp13RequestPacket.getString(_buffer, _tok1).toString()));
                        }
                        else
                            _handler.parsedSslKeySize(length);
                        
                        break;


                        
                        // Used to lock down jk requests with a
                        // secreate
                        // key.
                        
                    case Ajp13RequestHeaders.SECRET_ATTR:
                        // XXX Investigate safest way to
                        // deal with
                        // this...
                        // should this tie into shutdown
                        // packet?
                        break;


                    case Ajp13RequestHeaders.STORED_METHOD_ATTR:
                        // XXX Confirm this should
                        // really overide
                        // previously parsed method?
                        // _handler.parsedMethod(Ajp13PacketMethods.CACHE.get(Ajp13RequestPacket.getString()));
                        break;




                    case Ajp13RequestHeaders.CONTEXT_ATTR:
                        _handler.parsedContextPath(Ajp13RequestPacket.getString(_buffer, _tok1));
                        break;
                    case Ajp13RequestHeaders.SERVLET_PATH_ATTR:
                        _handler.parsedServletPath(Ajp13RequestPacket.getString(_buffer, _tok1));


                        break;
                    default:
                        Log.warn("Unsupported Ajp13 Request Attribute {}", new Integer(attr_type));
                    break;
                }


                attr_type = Ajp13RequestPacket.getByte(_buffer) & 0xff;
            }












            _contentPosition = 0;
            switch ((int) _contentLength)
            {


                case HttpTokens.NO_CONTENT:
                    _state = STATE_END;
                    _handler.headerComplete();
                    _handler.messageComplete(_contentPosition);


                    break;


                case HttpTokens.UNKNOWN_CONTENT:


                    _generator.getBodyChunk();
                    if (_buffers != null && _body == null && _buffer == _header && _header.length() <= 0)
                    {
                        _body = _buffers.getBuffer(Ajp13Packet.MAX_PACKET_SIZE);
                        _body.clear();
                    }
                    _state = STATE_AJP13CHUNK_START;
                    _handler.headerComplete(); // May recurse here!


                    return total_filled;


                default:


                    if (_buffers != null && _body == null && _buffer == _header && _contentLength > (_header.capacity() - _header.getIndex()))
                    {
                        _body = _buffers.getBuffer(Ajp13Packet.MAX_PACKET_SIZE);
                        _body.clear();


                    }
                _state = STATE_AJP13CHUNK_START;
                _handler.headerComplete(); // May recurse here!
                return total_filled;
            }
        }




        Buffer chunk;


        while (_state>STATE_END)
        {
            switch (_state)
            {
                case STATE_AJP13CHUNK_START:
                    if (_buffer.length()<6)
                    {
                        if (total_filled<0) 
                            total_filled=0;
                        total_filled+=fill();
                        if (_buffer.length()<6)
                            return total_filled;
                    }
                    int _magic=Ajp13RequestPacket.getInt(_buffer);
                    if (_magic!=Ajp13RequestHeaders.MAGIC)
                    {
                        throw new IOException("Bad AJP13 rcv packet: "+"0x"+Integer.toHexString(_magic)+" expected "+"0x"
                                +Integer.toHexString(Ajp13RequestHeaders.MAGIC)+" "+this);
                    }
                    _chunkPosition=0;
                    _chunkLength=Ajp13RequestPacket.getInt(_buffer)-2;
                    Ajp13RequestPacket.getInt(_buffer);
                    if (_chunkLength==0)
                    {
                        _state=STATE_END;
                         _generator.gotBody();
                        _handler.messageComplete(_contentPosition);
                        return total_filled;
                    }
                    _state=STATE_AJP13CHUNK;


                case STATE_AJP13CHUNK:
                    if (_buffer.length()<_chunkLength)
                    {
                        if (total_filled<0) 
                            total_filled=0;
                        total_filled+=fill();
                        if (_buffer.length()<_chunkLength)
                            return total_filled;
                    }


                    int remaining=_chunkLength-_chunkPosition;


                    if (remaining==0)
                    {
                        _state=STATE_AJP13CHUNK_START;
                        if (_contentPosition<_contentLength)
                        {
                            _generator.getBodyChunk();
                        }
                        else
                        {
                            _generator.gotBody();
                        }


                        return total_filled;
                    }


                    if (_buffer.length()<remaining)
                    {
                        remaining=_buffer.length();
                    }


                    chunk=Ajp13RequestPacket.get(_buffer,(int)remaining);
                    _contentPosition+=chunk.length();
                    _chunkPosition+=chunk.length();
                    _contentView.update(chunk);


                    remaining=_chunkLength-_chunkPosition;


                    if (remaining==0)

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            _state = STATE_END;
            return -1;
        }


        // Handle any unfinished business?
        Buffer content = _content;
        if (content != null && content.length() > 0)
        {
            flush();
            if (content != null && content.length() > 0)
                throw new IllegalStateException("FULL");
        }


        // we better check we have a buffer
        initContent();

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        // get a header buffer
        if (_header == null)
            _header = _buffers.getBuffer(_headerBufferSize);


        Buffer tmpbuf = _buffer;
        _buffer = _header;


        try
        {
            // start the header

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