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/* Copyright (C) 2002-2005 RealVNC Ltd. All Rights Reserved.
* Copyright (C) 2005 Martin Koegler
* Copyright (C) 2010 TigerVNC Team
* Copyright (C) 2011 Brian P. Hinz
*
* This is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This software is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this software; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301,
* USA.
*/
package com.tigervnc.rdr;
import java.nio.ByteBuffer;
import java.nio.channels.*;
import javax.net.ssl.*;
import com.tigervnc.network.*;
public class TLSOutStream extends OutStream {
static final int defaultBufSize = 16384;
public TLSOutStream(OutStream _out, SSLEngineManager _manager) {
manager = _manager;
out = (FdOutStream)_out;
SSLSession session = manager.getSession();
bufSize = session.getApplicationBufferSize();
b = new byte[bufSize];
ptr = offset = start = 0;
end = start + bufSize;
}
public int length()
{
return offset + ptr - start;
}
public void flush()
{
int sentUpTo = start;
while (sentUpTo < ptr) {
int n = writeTLS(b, sentUpTo, ptr - sentUpTo);
sentUpTo += n;
offset += n;
}
ptr = start;
//out.flush();
}
protected int overrun(int itemSize, int nItems)
{
if (itemSize > bufSize)
throw new Exception("TLSOutStream overrun: max itemSize exceeded");
flush();
if (itemSize * nItems > end - ptr)
nItems = (end - ptr) / itemSize;
return nItems;
}
protected int writeTLS(byte[] data, int dataPtr, int length)
{
int n = 0;
try {
n = manager.write(data, dataPtr, length);
} catch (java.io.IOException e) {
throw new Exception(e.getMessage());
}
//if (n == GNUTLS_E_INTERRUPTED || n == GNUTLS_E_AGAIN)
// return 0;
//if (n < 0)
// throw new TLSException("writeTLS", n);
return n;
}
private SSLEngineManager manager;
private FdOutStream out;
private int start;
private int offset;
private int bufSize;
}
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