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