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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.AuthenticationFailedException;
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28 import com.glavsoft.exceptions.FatalException;
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29 import com.glavsoft.exceptions.TransportException;
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30 import com.glavsoft.exceptions.UnsupportedProtocolVersionException;
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31 import com.glavsoft.exceptions.UnsupportedSecurityTypeException;
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32 import com.glavsoft.rfb.encoding.ServerInitMessage;
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33 import com.glavsoft.rfb.protocol.ProtocolContext;
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34 import com.glavsoft.rfb.protocol.ProtocolSettings;
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35
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36 import java.util.logging.Logger;
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37
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38 /**
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39 * ClientInit
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40 *
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41 * Once the client and server are sure that they're happy to talk to one
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42 * another, the client sends an initialisation message. At present this
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43 * message onl@!,@!,y consists of a boolean indicating whether the server should try
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44 * to share the desktop by leaving other clients connected, or give exclusive
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45 * access to this client by disconnecting all other clients.
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46 *
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47 * 1 - U8 - shared-flag
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48 *
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49 * Shared-flag is non-zero (true) if the server should try to share the desktop by leaving
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50 * other clients connected, zero (false) if it should give exclusive access to this client by
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51 * disconnecting all other clients.
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52 *
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53 * ServerInit
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54 *
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55 * After receiving the ClientInit message, the server sends a ServerInit message. This
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56 * tells the client the width and height of the server’s framebuffer, its pixel format and the
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57 * name associated with the desktop.
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58 */
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59 public class InitState extends ProtocolState {
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60
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61 public InitState(ProtocolContext context) {
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62 super(context);
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63 }
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64
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65 @Override
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66 public boolean next() throws UnsupportedProtocolVersionException, TransportException,
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67 UnsupportedSecurityTypeException, AuthenticationFailedException, FatalException {
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68 clientAndServerInit();
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69 return false;
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70 }
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71
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72 protected void clientAndServerInit() throws TransportException {
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73 ServerInitMessage serverInitMessage = getServerInitMessage();
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74 ProtocolSettings settings = context.getSettings();
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75 settings.enableAllEncodingCaps();
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76 completeContextData(serverInitMessage);
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77 }
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78
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79 protected void completeContextData(ServerInitMessage serverInitMessage) {
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80 context.setPixelFormat(serverInitMessage.getPixelFormat());
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81 context.setFbWidth(serverInitMessage.getFrameBufferWidth());
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82 context.setFbHeight(serverInitMessage.getFrameBufferHeight());
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83 context.setRemoteDesktopName(serverInitMessage.getName());
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84 Logger.getLogger(getClass().getName()).fine(serverInitMessage.toString());
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85 }
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86
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87 protected ServerInitMessage getServerInitMessage() throws TransportException {
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88 writer.write(context.getSettings().getSharedFlag());
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89 return new ServerInitMessage(reader);
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90 }
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91
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92
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93 }
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