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1 // Copyright (C) 2010, 2011, 2012, 2013 GlavSoft LLC.
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2 // All rights reserved.
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3 //
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4 //-------------------------------------------------------------------------
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5 // This file is part of the TightVNC software. Please visit our Web site:
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6 //
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7 // http://www.tightvnc.com/
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8 //
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9 // This program is free software; you can redistribute it and/or modify
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10 // it under the terms of the GNU General Public License as published by
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11 // the Free Software Foundation; either version 2 of the License, or
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12 // (at your option) any later version.
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13 //
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14 // This program is distributed in the hope that it will be useful,
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15 // but WITHOUT ANY WARRANTY; without even the implied warranty of
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16 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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17 // GNU General Public License for more details.
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18 //
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19 // You should have received a copy of the GNU General Public License along
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20 // with this program; if not, write to the Free Software Foundation, Inc.,
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21 // 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
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22 //-------------------------------------------------------------------------
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23 //
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24
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25 package com.glavsoft.rfb.protocol.state;
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26
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27 import com.glavsoft.exceptions.TransportException;
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28 import com.glavsoft.exceptions.UnsupportedSecurityTypeException;
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29 import com.glavsoft.rfb.protocol.ProtocolContext;
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30 import com.glavsoft.rfb.protocol.auth.AuthHandler;
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31
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32 import java.util.logging.Logger;
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33
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34 public class SecurityType33State extends SecurityType37State {
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35
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36 public SecurityType33State(ProtocolContext context) {
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37 super(context);
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38 }
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39
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40 @Override
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41 protected void negotiateAboutSecurityType()
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42 throws TransportException, UnsupportedSecurityTypeException {
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43 Logger.getLogger(getClass().getName()).info("Get Security Type");
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44 int type = reader.readInt32();
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45 Logger.getLogger(getClass().getName()).info("Type received: " + type);
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46 if (0 == type)
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47 // throw exception with reason
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48 throw new UnsupportedSecurityTypeException(reader.readString());
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49 AuthHandler typeSelected = selectAuthHandler(new byte[] {(byte) (0xff & type)},
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50 context.getSettings().authCapabilities);
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51 if (typeSelected != null) {
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52 setUseSecurityResult(typeSelected);
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53 Logger.getLogger(getClass().getName()).info("Type accepted: " + typeSelected.getName());
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54 } else
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55 throw new UnsupportedSecurityTypeException(
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56 "No security types supported. Server sent '" +
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57 type + "' security type, but we do not support it.");
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58 changeStateTo(new AuthenticationState(context, typeSelected));
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59 }
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60
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61 }
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