// 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.Link;
public class ServerX224DataPdu extends BaseElement {
public static final int X224_TPDU_LAST_DATA_UNIT = 0x80;
public static final int X224_TPDU_DATA = 0xF0;
public ServerX224DataPdu(String id) {
super(id);
}
@Override
public void handleData(ByteBuffer buf, Link link) {
if (buf == null)
return;
if (verbose)
System.out.println("[" + this + "] INFO: Data received: " + buf + ".");
int headerLength = buf.readVariableSignedIntLE();
if (headerLength != 2)
throw new RuntimeException("Unexpected X224 Data PDU header length. Expected header length: 2 , actual header length: " + headerLength + ".");
// Read X224 type and options
int type = buf.readUnsignedByte(); // High nibble: type, low nibble:
if ((type & 0xf0) != X224_TPDU_DATA)
throw new RuntimeException("[" + this + "] ERROR: Unexepcted X224 packet type. Expected packet type: " + X224_TPDU_DATA
+ " (X224_TPDU_DATA), actual packet type: " + type + ", buf: " + buf + ".");
int options = buf.readUnsignedByte();
if ((options & X224_TPDU_LAST_DATA_UNIT) != X224_TPDU_LAST_DATA_UNIT)
throw new RuntimeException("Unexepcted X224 packet options. Expected options: " + X224_TPDU_LAST_DATA_UNIT
+ " (X224_TPDU_LAST_DATA_UNIT), actual packet options: " + options + ", buf: " + buf + ".");
ByteBuffer payload = buf.readBytes(buf.length - buf.cursor);
buf.unref();
pushDataToAllOuts(payload);
}
}