mirror of https://github.com/apache/cloudstack.git
71 lines
2.1 KiB
Java
71 lines
2.1 KiB
Java
// Licensed to the Apache Software Foundation (ASF) under one
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// or more contributor license agreements. See the NOTICE file
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// distributed with this work for additional information
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// regarding copyright ownership. The ASF licenses this file
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// to you under the Apache License, Version 2.0 (the
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// "License"); you may not use this file except in compliance
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// with the License. You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing,
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// software distributed under the License is distributed on an
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// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
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// KIND, either express or implied. See the License for the
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// specific language governing permissions and limitations
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// under the License.
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package rdpclient;
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import streamer.BaseElement;
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import streamer.ByteBuffer;
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import streamer.Link;
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public class ServerTpkt extends BaseElement {
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/**
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* TPKT protocol version (first byte).
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*/
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public static final int PROTOCOL_TPKT = 3;
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public ServerTpkt(String id) {
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super(id);
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}
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@Override
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public void handleData(ByteBuffer buf, Link link) {
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if (buf == null)
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return;
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if (verbose)
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System.out.println("[" + this + "] INFO: Data received: " + buf + ".");
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// We need at least 4 bytes to get packet length
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if (!cap(buf, 4, UNLIMITED, link, false))
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return;
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int version = buf.readUnsignedByte();
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if (version != PROTOCOL_TPKT)
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throw new RuntimeException("Unexpected data in TPKT header. Expected TPKT version: 0x03, actual value: " + buf + ".");
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buf.skipBytes(1); // Reserved byte
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// Length of whole packet, including header
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int length = buf.readUnsignedShort();
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if (!cap(buf, length, length, link, false))
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return;
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int payloadLength = length - buf.cursor;
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// Extract payload
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ByteBuffer outBuf = buf.slice(buf.cursor, payloadLength, true);
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buf.unref();
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if (verbose) {
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outBuf.putMetadata("source", this);
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}
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pushDataToAllOuts(outBuf);
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}
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}
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