| // |
| // ======================================================================== |
| // Copyright (c) 1995-2016 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; |
| |
| /** |
| * <p>Parser for the END_REQUEST frame body.</p> |
| * <pre> |
| * struct end_request_body { |
| * uint applicationStatus; |
| * ubyte protocolStatus; |
| * ubyte[3] reserved; |
| * } |
| * </pre> |
| */ |
| public class EndRequestContentParser extends ContentParser |
| { |
| private final Parser.Listener listener; |
| private State state = State.APPLICATION; |
| private int cursor; |
| private int application; |
| private int protocol; |
| |
| public EndRequestContentParser(HeaderParser headerParser, Parser.Listener listener) |
| { |
| super(headerParser); |
| this.listener = listener; |
| } |
| |
| @Override |
| public Result parse(ByteBuffer buffer) |
| { |
| while (buffer.hasRemaining()) |
| { |
| switch (state) |
| { |
| case APPLICATION: |
| { |
| if (buffer.remaining() >= 4) |
| { |
| application = buffer.getInt(); |
| state = State.PROTOCOL; |
| } |
| else |
| { |
| state = State.APPLICATION_BYTES; |
| cursor = 0; |
| } |
| break; |
| } |
| case APPLICATION_BYTES: |
| { |
| int quarterInt = buffer.get() & 0xFF; |
| application = (application << 8) + quarterInt; |
| if (++cursor == 4) |
| state = State.PROTOCOL; |
| break; |
| } |
| case PROTOCOL: |
| { |
| protocol = buffer.get() & 0xFF; |
| state = State.RESERVED; |
| break; |
| } |
| case RESERVED: |
| { |
| if (buffer.remaining() >= 3) |
| { |
| buffer.position(buffer.position() + 3); |
| onEnd(); |
| reset(); |
| return Result.COMPLETE; |
| } |
| else |
| { |
| state = State.RESERVED_BYTES; |
| cursor = 0; |
| break; |
| } |
| } |
| case RESERVED_BYTES: |
| { |
| buffer.get(); |
| if (++cursor == 3) |
| { |
| onEnd(); |
| reset(); |
| return Result.COMPLETE; |
| } |
| break; |
| } |
| default: |
| { |
| throw new IllegalStateException(); |
| } |
| } |
| } |
| return Result.PENDING; |
| } |
| |
| private void onEnd() |
| { |
| if (application != 0) |
| listener.onFailure(getRequest(), new Exception("FastCGI application returned code " + application)); |
| else if (protocol != 0) |
| listener.onFailure(getRequest(), new Exception("FastCGI server returned code " + protocol)); |
| else |
| listener.onEnd(getRequest()); |
| } |
| |
| private void reset() |
| { |
| state = State.APPLICATION; |
| cursor = 0; |
| application = 0; |
| protocol = 0; |
| } |
| |
| private enum State |
| { |
| APPLICATION, APPLICATION_BYTES, PROTOCOL, RESERVED, RESERVED_BYTES |
| } |
| } |