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