// Licensed to the Apache Software Foundation (ASF) under one
// or more contributor license agreements. See the NOTICE file
// distributed with this work for additional information
// regarding copyright ownership. The ASF licenses this file
// to you 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 rdpclient.rdp;
import streamer.BaseElement;
import streamer.ByteBuffer;
import streamer.Element;
import streamer.Link;
import streamer.Pipeline;
import streamer.PipelineImpl;
import streamer.debug.MockSink;
import streamer.debug.MockSource;
public class ServerMCSPDU extends BaseElement {
public ServerMCSPDU(String id) {
super(id);
}
@Override
public void handleData(ByteBuffer buf, Link link) {
if (verbose)
System.out.println("[" + this + "] INFO: Data received: " + buf + ".");
byte headerByte = buf.readSignedByte();
int type = headerByte >> 2;
switch (type) {
// Expected type: send data indication: 26 (0x1a, top 6 bits, or 0x68)
case 0x1a: {
// int userId = buf.readUnsignedShort() + 1001; // User ID: 1002 (1001+1)
buf.skipBytes(2); // Ignore user ID
int channelId = buf.readUnsignedShort(); // Channel ID: 1003
int flags = buf.readSignedByte();
if ((flags & 0x30) != 0x30)
throw new RuntimeException("Fragmented MCS packets are not supported.");
int payloadLength = buf.readVariableUnsignedShort();
ByteBuffer data = buf.readBytes(payloadLength);
buf.unref();
pushDataToPad("channel_" + channelId, data);
break;
}
case 0x8: {
// Disconnection sequence.
buf.unref();
break;
}
default:
throw new RuntimeException("Unsupported MCS packet type: " + type + "(" + headerByte + "), data: " + buf + ".");
}
}
/**
* Example.
*
*/
public static void main(String args[]) {
// System.setProperty("streamer.Link.debug", "true");
// System.setProperty("streamer.Element.debug", "true");
// System.setProperty("streamer.Pipeline.debug", "true");
byte[] packet = new byte[] {
// TPKT
(byte)0x03, (byte)0x00, // TPKT Header: TPKT version = 3
(byte)0x00, (byte)0x1B, // TPKT length: 27 bytes
// X224
(byte)0x02, // X224 Length: 2 bytes
(byte)0xF0, // X224 Type: Data
(byte)0x80, // X224 EOT
// MCS
// Type: send data indication: 26 (0x1a, top 6 bits)
(byte)0x68, // ??
(byte)0x00, (byte)0x01, // User ID: 1002 (1001+1)
(byte)0x03, (byte)0xEB, // Channel ID: 1003
(byte)0x70, // Data priority: high, segmentation: begin|end
(byte)0x0D, // Payload length: 13 bytes
// Deactivate all PDU
(byte)0x0D, (byte)0x00, // Length: 13 bytes (LE)
// - PDUType: 22 (0x16, LE)
// Type: (............0110) TS_PDUTYPE_DEACTIVATEALLPDU
// ProtocolVersion: (000000000001....) 1
(byte)0x16, (byte)0x00,
(byte)0xEA, (byte)0x03, // PDU source: 1002 (LE)
(byte)0xEA, (byte)0x03, (byte)0x01, (byte)0x00, // ShareID = 66538
(byte)0x01, (byte)0x00, // Length if source descriptor: 1 (LE)
(byte)0x00, // Source descriptor (should be set to 0): 0
};
MockSource source = new MockSource("source", ByteBuffer.convertByteArraysToByteBuffers(packet));
Element mcs = new ServerMCSPDU("mcs") {
{
verbose = true;
}
};
Element tpkt = new ServerTpkt("tpkt");
Element x224 = new ServerX224DataPdu("x224");
Element sink = new MockSink("sink", ByteBuffer.convertByteArraysToByteBuffers(new byte[] {
// Deactivate all PDU
(byte)0x0D, (byte)0x00, // Length: 13 bytes (LE)
// - PDUType: 22 (0x16, LE)
// Type: (............0110) TS_PDUTYPE_DEACTIVATEALLPDU
// ProtocolVersion: (000000000001....) 1
(byte)0x16, (byte)0x00,
(byte)0xEA, (byte)0x03, // PDU source: 1002 (LE)
(byte)0xEA, (byte)0x03, (byte)0x01, (byte)0x00, // ShareID = 66538
(byte)0x01, (byte)0x00, // Length if source descriptor: 1 (LE)
(byte)0x00, // Source descriptor (should be set to 0): 0
}));
Pipeline pipeline = new PipelineImpl("test");
pipeline.add(source, tpkt, x224, mcs, sink);
pipeline.link("source", "tpkt", "x224", "mcs >channel_1003", "sink");
pipeline.runMainLoop("source", STDOUT, false, false);
}
}