| // |
| // ======================================================================== |
| // Copyright (c) 1995-2017 Mort Bay Consulting Pty. Ltd. |
| // ------------------------------------------------------------------------ |
| // All rights reserved. This program and the accompanying materials |
| // are made available under the terms of the Eclipse Public License v1.0 |
| // and Apache License v2.0 which accompanies this distribution. |
| // |
| // The Eclipse Public License is available at |
| // http://www.eclipse.org/legal/epl-v10.html |
| // |
| // The Apache License v2.0 is available at |
| // http://www.opensource.org/licenses/apache2.0.php |
| // |
| // You may elect to redistribute this code under either of these licenses. |
| // ======================================================================== |
| // |
| |
| package org.eclipse.jetty.fcgi.parser; |
| |
| import java.nio.ByteBuffer; |
| |
| import org.eclipse.jetty.fcgi.FCGI; |
| |
| public class BeginRequestContentParser extends ContentParser |
| { |
| private final ServerParser.Listener listener; |
| private State state = State.ROLE; |
| private int cursor; |
| private int role; |
| private int flags; |
| |
| public BeginRequestContentParser(HeaderParser headerParser, ServerParser.Listener listener) |
| { |
| super(headerParser); |
| this.listener = listener; |
| } |
| |
| @Override |
| public Result parse(ByteBuffer buffer) |
| { |
| while (buffer.hasRemaining()) |
| { |
| switch (state) |
| { |
| case ROLE: |
| { |
| if (buffer.remaining() >= 2) |
| { |
| role = buffer.getShort(); |
| state = State.FLAGS; |
| } |
| else |
| { |
| state = State.ROLE_BYTES; |
| cursor = 0; |
| } |
| break; |
| } |
| case ROLE_BYTES: |
| { |
| int halfShort = buffer.get() & 0xFF; |
| role = (role << 8) + halfShort; |
| if (++cursor == 2) |
| state = State.FLAGS; |
| break; |
| } |
| case FLAGS: |
| { |
| flags = buffer.get() & 0xFF; |
| state = State.RESERVED; |
| break; |
| } |
| case RESERVED: |
| { |
| if (buffer.remaining() >= 5) |
| { |
| buffer.position(buffer.position() + 5); |
| onStart(); |
| reset(); |
| return Result.COMPLETE; |
| } |
| else |
| { |
| state = State.RESERVED_BYTES; |
| cursor = 0; |
| break; |
| } |
| } |
| case RESERVED_BYTES: |
| { |
| buffer.get(); |
| if (++cursor == 5) |
| { |
| onStart(); |
| reset(); |
| return Result.COMPLETE; |
| } |
| break; |
| } |
| default: |
| { |
| throw new IllegalStateException(); |
| } |
| } |
| } |
| return Result.PENDING; |
| } |
| |
| private void onStart() |
| { |
| listener.onStart(getRequest(), FCGI.Role.from(role), flags); |
| } |
| |
| private void reset() |
| { |
| state = State.ROLE; |
| cursor = 0; |
| role = 0; |
| flags = 0; |
| } |
| |
| private enum State |
| { |
| ROLE, ROLE_BYTES, FLAGS, RESERVED, RESERVED_BYTES |
| } |
| } |