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17
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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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19
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8 import java.io.ByteArrayOutputStream;
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7
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9 import java.io.IOException;
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27
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10 import java.io.InputStream;
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15
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11 import java.io.InputStreamReader;
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18
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12 import java.net.BindException;
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10
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13 import java.net.ServerSocket;
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7
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14 import java.net.Socket;
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10
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15 import java.util.LinkedList;
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8
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16
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18
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17 import javax.imageio.ImageIO;
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18
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25
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19 import java.util.concurrent.ExecutorService;
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20 import java.util.concurrent.Executors;
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21 import java.io.OutputStream;
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7
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22
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23 class MyRfbProto extends RfbProto {
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8
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24
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27
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25 final static String versionMsg_3_998 = "RFB 003.998\n";
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26
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27
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15
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28 private int messageType;
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29 private int rectangles;
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19
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30 private int rectX;
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31 private int rectY;
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32 private int rectW;
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33 private int rectH;
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34 private int encoding;
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19
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35 private int zLen;
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25
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36 private int dataLen;
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37
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38 private ServerSocket servSock;
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18
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39 private int acceptPort;
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8
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40 private byte initData[];
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19
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41 private LinkedList <Socket> cliListTmp;
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42 private LinkedList <Socket> cliList;
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25
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43 private LinkedList <Thread> sendThreads;
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44 boolean createBimgFlag;
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25
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45
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34
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46 echoClient echo;
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47
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48 ExecutorService executor;
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49
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50
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51 byte[] pngBytes;
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25
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52
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53 MyRfbProto(String h, int p, VncViewer v ) throws IOException {
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7
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54 super(h, p, v);
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55 cliList = new LinkedList <Socket>();
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19
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56 cliListTmp = new LinkedList <Socket>();
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57 createBimgFlag = false;
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25
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58 sendThreads = new LinkedList <Thread>();
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59 // executor = Executors.newCachedThreadPool();
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60 executor = Executors.newSingleThreadExecutor();
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10
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61 }
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62
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63 MyRfbProto(String h, int p) throws IOException {
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64 super(h, p);
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65 cliList = new LinkedList <Socket>();
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19
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66 cliListTmp = new LinkedList <Socket>();
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67 createBimgFlag = false;
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68 sendThreads = new LinkedList <Thread>();
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69 // executor = Executors.newCachedThreadPool();
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70 executor = Executors.newSingleThreadExecutor();
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15
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71 }
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72
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28
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73 // over write
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27
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74 void writeVersionMsg() throws IOException {
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75 clientMajor = 3;
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76 if (serverMinor >= 9) {
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77 clientMinor = 9;
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78 os.write(versionMsg_3_998.getBytes());
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79 } else if (serverMajor > 3 || serverMinor >= 8) {
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80 clientMinor = 8;
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81 os.write(versionMsg_3_8.getBytes());
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82 } else if (serverMinor >= 9) {
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83 clientMinor = 9;
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84 os.write(versionMsg_3_998.getBytes());
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85 } else if (serverMinor >= 7) {
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86 clientMinor = 7;
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87 os.write(versionMsg_3_7.getBytes());
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88 } else {
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89 clientMinor = 3;
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90 os.write(versionMsg_3_3.getBytes());
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91 }
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92 protocolTightVNC = false;
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93 initCapabilities();
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94 }
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95
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96
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97
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10
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98 void initServSock(int port) throws IOException{
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99 servSock = new ServerSocket(port);
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100 acceptPort = port;
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101 }
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102 void selectPort(){
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103 int i = 5550;
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104 while(true){
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105 try{
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106 initServSock(i);
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107 break;
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108 }catch(BindException e){
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109 i++;
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110 continue;
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111 }catch(IOException e){
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112
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18
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113 }
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114 }
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25
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115 System.out.println("accept port = "+i);
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18
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116 }
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117 int getAcceptPort(){
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118 return acceptPort;
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7
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119 }
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120 void setSoTimeout(int num) throws IOException {
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121 servSock.setSoTimeout(num);
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122 }
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123
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124 Socket accept() throws IOException {
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125 return servSock.accept();
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126 }
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127
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128 void addSock(Socket sock){
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129 cliList.add(sock);
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130 }
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19
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131 void addSockTmp(Socket sock){
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22
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132 System.out.println("connected "+sock.getInetAddress());
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133 cliListTmp.add(sock);
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134 }
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10
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135
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7
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136 void mark(int len) throws IOException {
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137 is.mark(len);
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138 }
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139
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140 void reset() throws IOException {
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141 is.reset();
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15
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142 }
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7
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143
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8
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144 boolean markSupported() {
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7
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145 return is.markSupported();
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146 }
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8
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147
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148 void readServerInit() throws IOException {
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149
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150 mark(255);
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151 skipBytes(20);
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152 int nlen = readU32();
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153 int blen = 20+4+nlen;
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154 initData = new byte[blen];
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155 reset();
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156
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157 mark(blen);
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8
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158 readFully(initData);
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159 reset();
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160
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7
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161 framebufferWidth = readU16();
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162 framebufferHeight = readU16();
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163 bitsPerPixel = readU8();
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164 depth = readU8();
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165 bigEndian = (readU8() != 0);
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166 trueColour = (readU8() != 0);
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167 redMax = readU16();
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168 greenMax = readU16();
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169 blueMax = readU16();
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170 redShift = readU8();
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171 greenShift = readU8();
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172 blueShift = readU8();
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8
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173 byte[] pad = new byte[3];
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174 readFully(pad);
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175 int nameLength = readU32();
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176 byte[] name = new byte[nameLength];
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177 readFully(name);
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178 desktopName = new String(name);
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7
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179
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8
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180 // Read interaction capabilities (TightVNC protocol extensions)
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181 if (protocolTightVNC) {
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182 int nServerMessageTypes = readU16();
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183 int nClientMessageTypes = readU16();
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184 int nEncodingTypes = readU16();
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185 readU16();
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186 readCapabilityList(serverMsgCaps, nServerMessageTypes);
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187 readCapabilityList(clientMsgCaps, nClientMessageTypes);
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188 readCapabilityList(encodingCaps, nEncodingTypes);
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189 }
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190
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191 inNormalProtocol = true;
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7
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192 }
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193
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27
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194 void sendRfbVersion(OutputStream os) throws IOException{
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195 os.write(versionMsg_3_998.getBytes());
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196 }
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28
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197 void readVersionMsg(InputStream is) throws IOException {
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198
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199 byte[] b = new byte[12];
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200
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201 is.read(b);
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202
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203 if ((b[0] != 'R') || (b[1] != 'F') || (b[2] != 'B') || (b[3] != ' ')
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204 || (b[4] < '0') || (b[4] > '9') || (b[5] < '0') || (b[5] > '9')
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205 || (b[6] < '0') || (b[6] > '9') || (b[7] != '.')
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206 || (b[8] < '0') || (b[8] > '9') || (b[9] < '0') || (b[9] > '9')
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207 || (b[10] < '0') || (b[10] > '9') || (b[11] != '\n')) {
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208 throw new IOException("Host " + host + " port " + port
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209 + " is not an RFB server");
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210 }
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211
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212 serverMajor = (b[4] - '0') * 100 + (b[5] - '0') * 10 + (b[6] - '0');
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213 serverMinor = (b[8] - '0') * 100 + (b[9] - '0') * 10 + (b[10] - '0');
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214
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215 if (serverMajor < 3) {
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216 throw new IOException(
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217 "RFB server does not support protocol version 3");
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218 }
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219
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220 }
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27
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221 void sendSecurityType(OutputStream os) throws IOException {
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222 // number-of-security-types
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223 os.write(1);
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224 // security-types
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225 // 1:None
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226 os.write(1);
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227 }
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28
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228 void readSecType(InputStream is) throws IOException {
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229 byte[] b = new byte[1];
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230 is.read(b);
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231
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232 }
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233 void sendSecResult(OutputStream os) throws IOException {
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234 byte[] b = castIntByte(0);
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235 os.write(b);
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236 }
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237
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27
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238 void readClientInit(InputStream in) throws IOException {
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239 byte[] b = new byte[0];
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240 in.read(b);
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241 }
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242
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243 void sendInitData(OutputStream os) throws IOException{
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244 os.write(initData);
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8
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245 }
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10
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246
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15
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247 void sendData(byte b[]){
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248 try{
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249 for(Socket cli : cliList){
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250 try{
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251 cli.getOutputStream().write(b, 0, b.length);
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252 }catch(IOException e){
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34
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253 //insert
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254
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255 System.out.println("lostchild");
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256 if("1".equals(echoClient.value.leaderflag)){
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257 echo = new echoClient();
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258 echo.openport();
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259 echo.lostchild();
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260 }
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15
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261 // if socket closed
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262 cliList.remove(cli);
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263 }
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264 }
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19
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265 // System.out.println("cliSize="+cliSize());
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15
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266 }catch(Exception e){
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267 }
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19
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268 }
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269
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270 void sendPngImage(){
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271 try{
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272 for(Socket cli : cliListTmp){
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273 try{
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274 sendPngData(cli);
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275 addSock(cli);
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276 }catch(IOException e){
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277 // if socket closed
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278 cliListTmp.remove(cli);
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279 }
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280 }
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281 // System.out.println("cliSize="+cliSize());
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282 }catch(Exception e){
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283 }
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284 cliListTmp.clear();
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285 }
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25
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286
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287
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19
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288
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15
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289 boolean ready() throws IOException {
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290 BufferedReader br = new BufferedReader(new InputStreamReader(is));
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291 return br.ready();
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10
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292 }
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293
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294 int cliSize(){
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295 return cliList.size();
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296 }
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15
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297 void printNumBytesRead(){
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298 System.out.println("numBytesRead="+numBytesRead);
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299 }
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300 void bufResetSend(int size) throws IOException {
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301 reset();
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302 int len = size;
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303 if(available() < size )
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304 len = available();
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305 byte buffer[] = new byte[len];
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306 readFully(buffer);
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307 sendData(buffer);
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308 }
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25
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309 void readSendData()throws IOException{
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310 byte buffer[] = new byte[dataLen];
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311 readFully(buffer);
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312 reset();
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313
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314 for(Socket cli : cliList){
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315 try{
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316 OutputStream out = cli.getOutputStream();
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317 executor.execute(new SendThread(out, buffer));
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318 }catch(IOException e){
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319 // if client socket closed
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320 cliListTmp.remove(cli);
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321 }catch(Exception e){
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322
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323 }
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324
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325 }
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326 }
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15
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327 void regiFramebufferUpdate()throws IOException{
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19
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328 mark(20);
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15
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329 messageType = readU8();
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330 skipBytes(1);
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331 rectangles = readU16();
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19
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332 rectX = readU16();
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333 rectY = readU16();
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334 rectW = readU16();
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335 rectH = readU16();
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336 encoding = readU32();
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337 if(encoding == 16)
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338 zLen = readU32();
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339 reset();
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340 }
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341 void checkAndMark() throws IOException{
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342 switch(encoding){
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343 case RfbProto.EncodingRaw:
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25
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344 dataLen = rectW * rectH * 4 + 16;
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345 mark(dataLen);
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19
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346 break;
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347 case RfbProto.EncodingZRLE:
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25
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348 dataLen = zLen+20;
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349 mark(dataLen);
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19
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350 break;
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351 default:
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352 mark(1000000);
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353 }
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354 }
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355 BufferedImage createBufferedImage(Image img){
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356 BufferedImage bimg = new BufferedImage(img.getWidth(null), img.getHeight(null), BufferedImage.TYPE_INT_RGB );
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357
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358 Graphics g = bimg.getGraphics();
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359 g.drawImage(img, 0, 0, null);
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360 g.dispose();
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361 return bimg;
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362 }
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363
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364 void createPngBytes(BufferedImage bimg)throws IOException {
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365 pngBytes = getImageBytes(bimg , "png");
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366 }
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367 byte[] getBytes(BufferedImage img)throws IOException {
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368 byte[] b = getImageBytes(img, "png");
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369 return b;
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15
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370 }
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18
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371
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19
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372 byte[] getImageBytes(BufferedImage image, String imageFormat) throws IOException {
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373 ByteArrayOutputStream bos = new ByteArrayOutputStream();
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374 BufferedOutputStream os = new BufferedOutputStream(bos);
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375 image.flush();
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376 ImageIO.write(image, imageFormat, os);
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377 os.flush();
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378 os.close();
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379 return bos.toByteArray();
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380 }
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381
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382 void sendPngData(Socket sock)throws IOException{
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383 byte[] dataLength = castIntByte(pngBytes.length);
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384 sock.getOutputStream().write(dataLength);
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385 sock.getOutputStream().write(pngBytes);
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386 }
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387 byte[] castIntByte(int len){
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388 byte[] b = new byte[4];
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389 b[0] = (byte)((len >>> 24 ) & 0xFF);
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390 b[1] = (byte)((len >>> 16 ) & 0xFF);
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391 b[2] = (byte)((len >>> 8 ) & 0xFF);
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392 b[3] = (byte)((len >>> 0 ) & 0xFF);
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393 return b;
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394 }
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18
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395
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19
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396 BufferedImage createBimg()throws IOException{
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397 BufferedImage bimg = ImageIO.read(new ByteArrayInputStream(pngBytes));
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398 return bimg;
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399 }
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25
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400 void readPngData()throws IOException{
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27
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401 pngBytes = new byte[is.available()];
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25
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402 readFully(pngBytes);
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403 }
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15
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404 void printFramebufferUpdate(){
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405
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406 System.out.println("messageType=" + messageType);
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407 System.out.println("rectangles="+rectangles);
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408 System.out.println("encoding=" + encoding);
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19
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409 switch(encoding){
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410 case RfbProto.EncodingRaw:
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411 System.out.println("rectW * rectH * 4 + 16 =" + rectW * rectH * 4 + 16);
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412 break;
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413 default:
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414 }
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15
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415 }
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7
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416 }
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27
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417
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418
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