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24
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1 package myVncProxy;
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15
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2 import java.io.BufferedReader;
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10
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3 import java.io.IOException;
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15
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4 import java.io.InputStreamReader;
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23
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5 import java.net.BindException;
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10
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6 import java.net.ServerSocket;
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7 import java.net.Socket;
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8 import java.util.LinkedList;
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9
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10
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11 class MyRfbProto extends RfbProto {
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12
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18
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13 private int messageType;
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14 private int rectangles;
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23
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15 private int rectX;
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16 private int rectY;
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17 private int rectW;
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18 private int rectH;
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18
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19 private int encoding;
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20
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23
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21 private ServerSocket servSock;
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22 private int acceptPort;
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10
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23 private byte initData[];
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24 private LinkedList <Socket> cliList;
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25
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13
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26 MyRfbProto(String h, int p, VncViewer v ) throws IOException {
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10
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27 super(h, p, v);
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28 cliList = new LinkedList <Socket>();
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29 }
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30
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13
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31 MyRfbProto(String h, int p) throws IOException {
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32 super(h, p);
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33 cliList = new LinkedList <Socket>();
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34 }
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24
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35
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10
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36 void initServSock(int port) throws IOException{
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37 servSock = new ServerSocket(port);
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38 acceptPort = port;
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39 }
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23
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40 void selectPort(){
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41 int i = 5550;
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42 while(true){
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43 try{
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44 initServSock(i);
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45 break;
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46 }catch(BindException e){
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47 i++;
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48 continue;
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49 }catch(IOException e){
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50
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23
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51 }
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52 }
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53 }
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54 int getAcceptPort(){
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55 return acceptPort;
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56 }
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10
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57 void setSoTimeout(int num) throws IOException {
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58 servSock.setSoTimeout(num);
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59 }
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60
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61 Socket accept() throws IOException {
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62 return servSock.accept();
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63 }
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64
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65 void addSock(Socket sock){
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66 cliList.add(sock);
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67 }
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68
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69 void mark(int len) throws IOException {
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70 is.mark(len);
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71 }
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72
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73 void reset() throws IOException {
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74 is.reset();
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18
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75 }
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10
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76
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77 boolean markSupported() {
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78 return is.markSupported();
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79 }
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80
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81 void readServerInit() throws IOException {
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82
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83 mark(255);
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84 skipBytes(20);
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85 int nlen = readU32();
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86 int blen = 20+4+nlen;
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87 initData = new byte[blen];
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88 reset();
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89
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90 mark(blen);
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91 readFully(initData);
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92 reset();
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93
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94 framebufferWidth = readU16();
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95 framebufferHeight = readU16();
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96 bitsPerPixel = readU8();
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97 depth = readU8();
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98 bigEndian = (readU8() != 0);
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99 trueColour = (readU8() != 0);
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100 redMax = readU16();
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101 greenMax = readU16();
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102 blueMax = readU16();
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103 redShift = readU8();
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104 greenShift = readU8();
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105 blueShift = readU8();
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106 byte[] pad = new byte[3];
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107 readFully(pad);
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108 int nameLength = readU32();
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109 byte[] name = new byte[nameLength];
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110 readFully(name);
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111 desktopName = new String(name);
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112
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113 // Read interaction capabilities (TightVNC protocol extensions)
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114 if (protocolTightVNC) {
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115 int nServerMessageTypes = readU16();
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116 int nClientMessageTypes = readU16();
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117 int nEncodingTypes = readU16();
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118 readU16();
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119 readCapabilityList(serverMsgCaps, nServerMessageTypes);
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120 readCapabilityList(clientMsgCaps, nClientMessageTypes);
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121 readCapabilityList(encodingCaps, nEncodingTypes);
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122 }
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123
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124 inNormalProtocol = true;
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125 }
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126
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127 void sendInitData(Socket sock) throws IOException{
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128 sock.getOutputStream().write(initData);
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129 }
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130
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17
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131 // void sendData(byte b[]) throws IOException{
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132 void sendData(byte b[]){
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133 try{
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134 for(Socket cli : cliList){
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135 try{
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136 cli.getOutputStream().write(b, 0, b.length);
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137 }catch(IOException e){
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138 // if socket closed
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139 // cliList.remove(cli);
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140 cliList.remove(cli);
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141 }
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142 }
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20
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143 // System.out.println("cliSize="+cliSize());
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17
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144 }catch(Exception e){
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20
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145 // System.out.println("cliSize 0");
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17
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146 }
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10
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147 }
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15
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148 boolean ready() throws IOException {
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149 BufferedReader br = new BufferedReader(new InputStreamReader(is));
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150 return br.ready();
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151 }
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10
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152
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153 int cliSize(){
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154 return cliList.size();
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155 }
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15
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156 void printNumBytesRead(){
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157 System.out.println("numBytesRead="+numBytesRead);
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158 }
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159 void bufResetSend(int size) throws IOException {
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160 reset();
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161 int len = size;
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162 if(available() < size )
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163 len = available();
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164 byte buffer[] = new byte[len];
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165 readFully(buffer);
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166 sendData(buffer);
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167 }
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18
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168 void regiFramebufferUpdate()throws IOException{
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169 mark(16);
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170 messageType = readU8();
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171 skipBytes(1);
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172 rectangles = readU16();
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23
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173 rectX = readU16();
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174 rectY = readU16();
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175 rectW = readU16();
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176 rectH = readU16();
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18
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177 encoding = readU32();
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23
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178 reset();
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15
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179 }
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23
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180 void checkAndMark() throws IOException{
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181 switch(encoding){
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182 case RfbProto.EncodingRaw:
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183 mark(rectW * rectH * 4 + 16);
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184 break;
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185 default:
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186 mark(1000000);
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187 }
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188 }
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189
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18
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190 void printFramebufferUpdate(){
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191
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192 System.out.println("messageType=" + messageType);
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193 System.out.println("rectangles="+rectangles);
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194 System.out.println("encoding=" + encoding);
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23
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195 switch(encoding){
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196 case RfbProto.EncodingRaw:
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197 System.out.println("rectW * rectH * 4 + 16 =" + rectW * rectH * 4 + 16);
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198 break;
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199 default:
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200
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201
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202 }
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18
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203 }
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15
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204
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10
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205
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206 }
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