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1 package myVncProxy;
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25
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2 import java.awt.Graphics;
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3 import java.awt.Image;
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4 import java.awt.image.BufferedImage;
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5 import java.io.BufferedOutputStream;
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6 import java.io.BufferedReader;
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7 import java.io.ByteArrayInputStream;
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8 import java.io.ByteArrayOutputStream;
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10
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9 import java.io.IOException;
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10 import java.io.InputStreamReader;
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11 import java.net.BindException;
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12 import java.net.ServerSocket;
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13 import java.net.Socket;
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14 import java.nio.ByteBuffer;
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10
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15 import java.util.LinkedList;
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16
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17 import javax.imageio.ImageIO;
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18
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39
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19 import org.omg.CORBA.portable.OutputStream;
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20
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10
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21
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22 class MyRfbProto extends RfbProto {
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23
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18
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24 private int messageType;
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25 private int rectangles;
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23
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26 private int rectX;
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27 private int rectY;
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28 private int rectW;
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29 private int rectH;
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30 private int encoding;
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31 private int zLen;
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32 private int dataLen;
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33
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34 private ServerSocket servSock;
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35 private int acceptPort;
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36 private byte initData[];
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37 private LinkedList <Socket> cliListTmp;
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38 private LinkedList <Socket> cliList;
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39
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39 private LinkedList <Thread> sendThreads;
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40 boolean createBimgFlag;
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41
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42 byte[] pngBytes;
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43
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44 MyRfbProto(String h, int p, VncViewer v ) throws IOException {
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45 super(h, p, v);
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46 cliList = new LinkedList <Socket>();
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47 cliListTmp = new LinkedList <Socket>();
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48 createBimgFlag = false;
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49 sendThreads = new LinkedList <Thread>();
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50 }
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51
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52 MyRfbProto(String h, int p) throws IOException {
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53 super(h, p);
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54 cliList = new LinkedList <Socket>();
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55 cliListTmp = new LinkedList <Socket>();
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56 createBimgFlag = false;
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39
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57 sendThreads = new LinkedList <Thread>();
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13
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58 }
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24
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59
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60 void initServSock(int port) throws IOException{
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61 servSock = new ServerSocket(port);
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62 acceptPort = port;
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63 }
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64 void selectPort(){
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65 int i = 5550;
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66 while(true){
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67 try{
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68 initServSock(i);
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69 break;
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70 }catch(BindException e){
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71 i++;
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72 continue;
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73 }catch(IOException e){
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74
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75 }
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76 }
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77 System.out.println("accept port = "+i);
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78 }
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79 int getAcceptPort(){
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80 return acceptPort;
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81 }
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82 void setSoTimeout(int num) throws IOException {
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83 servSock.setSoTimeout(num);
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84 }
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85
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86 Socket accept() throws IOException {
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87 return servSock.accept();
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88 }
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89
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90 void addSock(Socket sock){
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91 cliList.add(sock);
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92 }
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93 void addSockTmp(Socket sock){
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94 System.out.println("connected "+sock.getInetAddress());
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95 cliListTmp.add(sock);
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96 }
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97
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98 void mark(int len) throws IOException {
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99 is.mark(len);
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100 }
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101
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102 void reset() throws IOException {
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103 is.reset();
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104 }
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105
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106 boolean markSupported() {
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107 return is.markSupported();
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108 }
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109
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110 void readServerInit() throws IOException {
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111
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112 mark(255);
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113 skipBytes(20);
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114 int nlen = readU32();
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115 int blen = 20+4+nlen;
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116 initData = new byte[blen];
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117 reset();
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118
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119 mark(blen);
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120 readFully(initData);
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121 reset();
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122
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123 framebufferWidth = readU16();
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124 framebufferHeight = readU16();
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125 bitsPerPixel = readU8();
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126 depth = readU8();
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127 bigEndian = (readU8() != 0);
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128 trueColour = (readU8() != 0);
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129 redMax = readU16();
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130 greenMax = readU16();
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131 blueMax = readU16();
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132 redShift = readU8();
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133 greenShift = readU8();
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134 blueShift = readU8();
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135 byte[] pad = new byte[3];
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136 readFully(pad);
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137 int nameLength = readU32();
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138 byte[] name = new byte[nameLength];
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139 readFully(name);
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140 desktopName = new String(name);
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141
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142 // Read interaction capabilities (TightVNC protocol extensions)
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143 if (protocolTightVNC) {
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144 int nServerMessageTypes = readU16();
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145 int nClientMessageTypes = readU16();
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146 int nEncodingTypes = readU16();
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147 readU16();
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148 readCapabilityList(serverMsgCaps, nServerMessageTypes);
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149 readCapabilityList(clientMsgCaps, nClientMessageTypes);
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150 readCapabilityList(encodingCaps, nEncodingTypes);
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151 }
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152
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153 inNormalProtocol = true;
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154 }
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155
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156 void sendInitData(Socket sock) throws IOException{
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157 sock.getOutputStream().write(initData);
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158 }
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159
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160 void sendData(byte b[]){
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161 try{
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162 for(Socket cli : cliList){
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163 try{
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164 cli.getOutputStream().write(b, 0, b.length);
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165 }catch(IOException e){
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166 // if socket closed
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167 cliList.remove(cli);
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168 }
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169 }
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170 // System.out.println("cliSize="+cliSize());
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17
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171 }catch(Exception e){
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172 }
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173 }
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174
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175 void sendPngImage(){
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176 try{
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177 for(Socket cli : cliListTmp){
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178 try{
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179 sendPngData(cli);
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180 addSock(cli);
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181 }catch(IOException e){
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182 // if socket closed
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183 cliListTmp.remove(cli);
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184 }
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185 }
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186 // System.out.println("cliSize="+cliSize());
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187 }catch(Exception e){
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188 }
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189 cliListTmp.clear();
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190 }
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191
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192
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193
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194 boolean ready() throws IOException {
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195 BufferedReader br = new BufferedReader(new InputStreamReader(is));
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196 return br.ready();
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197 }
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198
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199 int cliSize(){
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200 return cliList.size();
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201 }
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202 void printNumBytesRead(){
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203 System.out.println("numBytesRead="+numBytesRead);
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204 }
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205 void bufResetSend(int size) throws IOException {
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206 reset();
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207 int len = size;
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208 if(available() < size )
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209 len = available();
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210 byte buffer[] = new byte[len];
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211 readFully(buffer);
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212 sendData(buffer);
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213 }
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214 void readSendData()throws IOException {
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215 byte buffer[] = new byte[dataLen];
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216 readFully(buffer);
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217 reset();
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218
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219 LinkedList <Thread> threads;
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220 threads = new LinkedList<Thread>();
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221
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222 for(Socket cli : cliList){
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223 // try{
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224 // OutputStream out = (OutputStream) cli.getOutputStream();
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225 // Thread th = new Thread(new SendThread(out, buffer));
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226 Thread th = new Thread(new SendThread(cli, buffer));
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227 threads.add(th);
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228 /*
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229 }catch(IOException e){
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230 // if socket closed
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231 cliListTmp.remove(cli);
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232 }catch(Exception e){
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233
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234 }
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235 */
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236 }
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237
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238 for(Thread thread : threads){
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239 thread.start();
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240 }
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241 try{
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242 for(Thread thread : threads){
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243 thread.join();
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244 }
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245 }catch(InterruptedException e){
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246
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247 }
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248
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249 }
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250 void regiFramebufferUpdate()throws IOException{
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251 mark(20);
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252 messageType = readU8();
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253 skipBytes(1);
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254 rectangles = readU16();
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255 rectX = readU16();
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256 rectY = readU16();
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257 rectW = readU16();
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258 rectH = readU16();
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259 encoding = readU32();
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260 if(encoding == 16)
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261 zLen = readU32();
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262 reset();
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263 }
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264 void checkAndMark() throws IOException{
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265 switch(encoding){
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266 case RfbProto.EncodingRaw:
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267 dataLen = rectW * rectH * 4 + 16;
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268 mark(dataLen);
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269 break;
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270 case RfbProto.EncodingZRLE:
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271 dataLen = zLen+20;
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272 mark(dataLen);
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273 break;
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274 default:
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275 mark(1000000);
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276 }
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277 }
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278 BufferedImage createBufferedImage(Image img){
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279 BufferedImage bimg = new BufferedImage(img.getWidth(null), img.getHeight(null), BufferedImage.TYPE_INT_RGB );
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280
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281 Graphics g = bimg.getGraphics();
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282 g.drawImage(img, 0, 0, null);
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283 g.dispose();
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284 return bimg;
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285 }
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286
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287 void createPngBytes(BufferedImage bimg)throws IOException {
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288 pngBytes = getImageBytes(bimg , "png");
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289 }
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290 byte[] getBytes(BufferedImage img)throws IOException {
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291 byte[] b = getImageBytes(img, "png");
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292 return b;
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293 }
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294
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295 byte[] getImageBytes(BufferedImage image, String imageFormat) throws IOException {
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296 ByteArrayOutputStream bos = new ByteArrayOutputStream();
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297 BufferedOutputStream os = new BufferedOutputStream(bos);
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298 image.flush();
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299 ImageIO.write(image, imageFormat, os);
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300 os.flush();
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301 os.close();
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302 return bos.toByteArray();
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303 }
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304
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305 void sendPngData(Socket sock)throws IOException{
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306 byte[] dataLength = castIntByte(pngBytes.length);
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307 sock.getOutputStream().write(dataLength);
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308 sock.getOutputStream().write(pngBytes);
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309 }
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310 byte[] castIntByte(int len){
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311 byte[] b = new byte[4];
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312 b[0] = (byte)((len >>> 24 ) & 0xFF);
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313 b[1] = (byte)((len >>> 16 ) & 0xFF);
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314 b[2] = (byte)((len >>> 8 ) & 0xFF);
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315 b[3] = (byte)((len >>> 0 ) & 0xFF);
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316 return b;
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317 }
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25
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318
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319 BufferedImage createBimg()throws IOException{
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320 BufferedImage bimg = ImageIO.read(new ByteArrayInputStream(pngBytes));
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321 return bimg;
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322 }
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323 void readPngData()throws IOException{
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324 pngBytes = new byte[is.available()];
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325 readFully(pngBytes);
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326 }
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18
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327 void printFramebufferUpdate(){
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328
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329 System.out.println("messageType=" + messageType);
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330 System.out.println("rectangles="+rectangles);
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331 System.out.println("encoding=" + encoding);
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23
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332 switch(encoding){
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333 case RfbProto.EncodingRaw:
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334 System.out.println("rectW * rectH * 4 + 16 =" + rectW * rectH * 4 + 16);
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335 break;
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336 default:
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337 }
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18
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338 }
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339 }
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