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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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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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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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10
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19
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20 class MyRfbProto extends RfbProto {
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21
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18
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22 private int messageType;
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23 private int rectangles;
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23
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24 private int rectX;
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25 private int rectY;
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26 private int rectW;
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27 private int rectH;
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28 private int encoding;
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29
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30 private ServerSocket servSock;
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31 private int acceptPort;
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32 private byte initData[];
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33 private LinkedList <Socket> cliList;
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34
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35 byte[] pngBytes;
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36
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37 MyRfbProto(String h, int p, VncViewer v ) throws IOException {
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38 super(h, p, v);
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39 cliList = new LinkedList <Socket>();
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40 }
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41
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42 MyRfbProto(String h, int p) throws IOException {
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43 super(h, p);
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44 cliList = new LinkedList <Socket>();
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45 }
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46
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47 void initServSock(int port) throws IOException{
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48 servSock = new ServerSocket(port);
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49 acceptPort = port;
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50 }
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51 void selectPort(){
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52 int i = 5550;
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53 while(true){
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54 try{
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55 initServSock(i);
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56 break;
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57 }catch(BindException e){
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58 i++;
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59 continue;
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60 }catch(IOException e){
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61
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23
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62 }
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63 }
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64 }
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65 int getAcceptPort(){
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66 return acceptPort;
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67 }
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68 void setSoTimeout(int num) throws IOException {
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69 servSock.setSoTimeout(num);
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70 }
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71
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72 Socket accept() throws IOException {
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73 return servSock.accept();
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74 }
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75
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76 void addSock(Socket sock){
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77 cliList.add(sock);
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78 }
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79
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80 void mark(int len) throws IOException {
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81 is.mark(len);
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82 }
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83
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84 void reset() throws IOException {
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85 is.reset();
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86 }
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87
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88 boolean markSupported() {
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89 return is.markSupported();
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90 }
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91
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92 void readServerInit() throws IOException {
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93
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94 mark(255);
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95 skipBytes(20);
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96 int nlen = readU32();
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97 int blen = 20+4+nlen;
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98 initData = new byte[blen];
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99 reset();
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100
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101 mark(blen);
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102 readFully(initData);
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103 reset();
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104
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105 framebufferWidth = readU16();
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106 framebufferHeight = readU16();
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107 bitsPerPixel = readU8();
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108 depth = readU8();
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109 bigEndian = (readU8() != 0);
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110 trueColour = (readU8() != 0);
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111 redMax = readU16();
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112 greenMax = readU16();
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113 blueMax = readU16();
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114 redShift = readU8();
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115 greenShift = readU8();
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116 blueShift = readU8();
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117 byte[] pad = new byte[3];
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118 readFully(pad);
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119 int nameLength = readU32();
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120 byte[] name = new byte[nameLength];
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121 readFully(name);
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122 desktopName = new String(name);
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123
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124 // Read interaction capabilities (TightVNC protocol extensions)
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125 if (protocolTightVNC) {
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126 int nServerMessageTypes = readU16();
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127 int nClientMessageTypes = readU16();
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128 int nEncodingTypes = readU16();
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129 readU16();
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130 readCapabilityList(serverMsgCaps, nServerMessageTypes);
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131 readCapabilityList(clientMsgCaps, nClientMessageTypes);
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132 readCapabilityList(encodingCaps, nEncodingTypes);
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133 }
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134
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135 inNormalProtocol = true;
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136 }
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137
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138 void sendInitData(Socket sock) throws IOException{
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139 sock.getOutputStream().write(initData);
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140 }
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141
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142 void sendData(byte b[]){
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143
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144
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145 try{
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146 for(Socket cli : cliList){
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147 try{
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148 cli.getOutputStream().write(b, 0, b.length);
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149 }catch(IOException e){
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150 // if socket closed
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151 cliList.remove(cli);
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152 }
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153 }
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20
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154 // System.out.println("cliSize="+cliSize());
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155 }catch(Exception e){
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156 }
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157 }
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158 boolean ready() throws IOException {
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159 BufferedReader br = new BufferedReader(new InputStreamReader(is));
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160 return br.ready();
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161 }
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162
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163 int cliSize(){
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164 return cliList.size();
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165 }
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166 void printNumBytesRead(){
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167 System.out.println("numBytesRead="+numBytesRead);
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168 }
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169 void bufResetSend(int size) throws IOException {
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170 reset();
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171 int len = size;
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172 if(available() < size )
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173 len = available();
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174 byte buffer[] = new byte[len];
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175 readFully(buffer);
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176 sendData(buffer);
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177 }
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178 void regiFramebufferUpdate()throws IOException{
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179 mark(16);
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180 messageType = readU8();
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181 skipBytes(1);
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182 rectangles = readU16();
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183 rectX = readU16();
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184 rectY = readU16();
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185 rectW = readU16();
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186 rectH = readU16();
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187 encoding = readU32();
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188 reset();
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189 }
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190 void checkAndMark() throws IOException{
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191 switch(encoding){
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192 case RfbProto.EncodingRaw:
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193 mark(rectW * rectH * 4 + 16);
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194 break;
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195 default:
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196 mark(1000000);
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197 }
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198 }
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199 BufferedImage createBufferedImage(Image img){
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200 BufferedImage bimg = new BufferedImage(img.getWidth(null), img.getHeight(null), BufferedImage.TYPE_INT_RGB );
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201
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202 Graphics g = bimg.getGraphics();
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203 g.drawImage(img, 0, 0, null);
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204 g.dispose();
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205 return bimg;
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206 }
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207
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208 void createPngBytes(BufferedImage bimg)throws IOException {
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209 pngBytes = getImageBytes(bimg , "png");
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210 }
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211 byte[] getBytes(BufferedImage img)throws IOException {
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212 byte[] b = getImageBytes(img, "png");
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213 return b;
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214 }
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215
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216 byte[] getImageBytes(BufferedImage image, String imageFormat) throws IOException {
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217 ByteArrayOutputStream bos = new ByteArrayOutputStream();
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218 BufferedOutputStream os = new BufferedOutputStream(bos);
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219 image.flush();
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220 ImageIO.write(image, imageFormat, os);
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221 os.flush();
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222 os.close();
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223 return bos.toByteArray();
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224 }
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225
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226 void sendPngData(Socket sock)throws IOException{
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227 System.out.println("pngBytes.length="+pngBytes.length);
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228
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229 // ByteBuffer length = ByteBuffer.allocate(4);
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230 // length.putInt(pngBytes.length);
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231
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232 // byte b = 1;
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233 // sock.getOutputStream().write(b);
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234 byte[] dataLength = castIntByte(pngBytes.length);
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235 sock.getOutputStream().write(dataLength);
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236 sock.getOutputStream().write(pngBytes);
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237 }
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238 byte[] castIntByte(int len){
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239 byte[] b = new byte[4];
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240 b[0] = (byte)((len >>> 24 ) & 0xFF);
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241 b[1] = (byte)((len >>> 16 ) & 0xFF);
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242 b[2] = (byte)((len >>> 8 ) & 0xFF);
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243 b[3] = (byte)((len >>> 0 ) & 0xFF);
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244 return b;
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245 }
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25
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246
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247 BufferedImage createBimg()throws IOException{
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248 BufferedImage bimg = ImageIO.read(new ByteArrayInputStream(pngBytes));
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249 return bimg;
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250 }
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251 void readPngData()throws IOException{
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252 pngBytes = new byte[is.available()];
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253 readFully(pngBytes);
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254 }
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255 void printFramebufferUpdate(){
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256
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257 System.out.println("messageType=" + messageType);
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258 System.out.println("rectangles="+rectangles);
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259 System.out.println("encoding=" + encoding);
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260 switch(encoding){
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261 case RfbProto.EncodingRaw:
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262 System.out.println("rectW * rectH * 4 + 16 =" + rectW * rectH * 4 + 16);
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263 break;
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264 default:
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265 }
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266 }
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267 }
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