Mercurial > hg > Members > riono > TreeVNC_ja_comment

annotate src/main/java/jp/ac/u_ryukyu/treevnc/TreeVNCNetwork.java @ 213:a8ae952191b8

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netmask done
author kono
date Wed, 02 Jul 2014 21:21:20 +0900
parents 2132018b8c68
children 606953a43198
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1 package jp.ac.u_ryukyu.treevnc;
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2
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3 import java.net.InetAddress;
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4 import java.net.InterfaceAddress;
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5 import java.net.NetworkInterface;
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6 import java.net.Socket;
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7 import java.net.SocketException;
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8 import java.util.Enumeration;
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9 import java.util.HashMap;
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10
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11 import com.glavsoft.viewer.swing.ConnectionParams;
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12
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13 public class TreeVNCNetwork {
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14
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15
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16 private HashMap<String, TreeManagement> interfaces = new HashMap<String, TreeManagement>();
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17 private TreeRFBProto myRfb;
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18 public TreeRFBProto getMyRfb() {
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19 return myRfb;
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20 }
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21
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22 public void setMyRfb(TreeRFBProto myRfb) {
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23 this.myRfb = myRfb;
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24 }
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25
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26 public void getNetworkInterfaces() throws SocketException {
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27 for (Enumeration<NetworkInterface> e = NetworkInterface.getNetworkInterfaces(); e.hasMoreElements();) {
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28 NetworkInterface ni = e.nextElement();
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29 if (ni.isUp() && ni.supportsMulticast() && !ni.isLoopback()) {
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30 for (InterfaceAddress ipaddress : ni.getInterfaceAddresses()) {
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31 byte [] netmask = getNetMask(ipaddress);
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32 String hostName = ipaddress.getAddress().getHostName();
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33 TreeManagement treeManager = new TreeManagement(hostName, ConnectionParams.DEFAULT_VNC_ROOT, myRfb.getViewer().getShowTree());
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34 treeManager.getList().getFirst().setPort(myRfb.getAcceptPort());
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35 byte[] netaddr = ipaddress.getAddress().getAddress();
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36 for(int i=0;i<netaddr.length;i++) {
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37 netaddr[i] &= netmask[i];
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38 }
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39 treeManager.setNetMask(netmask,netaddr);
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40 addNetworkInterface(ni, treeManager);
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41 System.out.println("Interfaces :" + ni.getName());
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42 }
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43 }
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44 }
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45 }
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46
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47 private byte[] getNetMask(InterfaceAddress ipaddress) {
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48 short prefix = ipaddress.getNetworkPrefixLength();
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49 byte[] netmask = ipaddress.getAddress().getAddress();
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50 for(int i = 0; i < netmask.length; i++) {
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51 int bitpos = i * 8;
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52 if (bitpos+7 < prefix) {
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53 netmask[i] = (byte)0xff;
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54 } else if (bitpos < prefix) {
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55 // ex. bitpos = 0, prefix = 2
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56 // bitpos+8-prefix
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57 // 1100 0000
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58 int bytemask = 0x80;
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59 for(int j = 1; j < bitpos+8-prefix; j++) {
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60 bytemask >>= 1;
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61 bytemask |= 0x80;
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62 }
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63 netmask[i] = (byte)bytemask;
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64 } else {
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65 netmask[i] = 0;
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66 }
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67 }
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68 return netmask ;
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69 }
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70
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71 NetworkInterface getInterface(Socket vncSocket) {
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72 InetAddress address = vncSocket.getInetAddress();
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73 try {
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74 return NetworkInterface.getByInetAddress(address);
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75 } catch (SocketException e) {
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76 return null;
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77 }
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78 }
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79
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80 private void addNetworkInterface(NetworkInterface ni, TreeManagement treeManager) {
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81 setTreeManager(ni.getName(), treeManager);
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82 }
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83
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84 public void setTreeManager(String intf, TreeManagement treeManager) {
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85 interfaces.put(intf, treeManager);
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86 }
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87
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88 public TreeManagement getTreeManager(String intf) {
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89 return interfaces.get(intf);
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90 }
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93
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94 }