Mercurial > hg > Members > riono > TreeVNC_ja_comment

annotate src/main/java/jp/ac/u_ryukyu/treevnc/TreeVNCNetwork.java @ 470:f7210f834403

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add unique node id
author mir3636
date Wed, 03 Aug 2016 19:09:11 +0900
parents 5bef0f09f088
children 141f627665ab
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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 private HashMap<String, TreeManagement> interfaces = new HashMap<String, TreeManagement>();
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16 private TreeRFBProto myRfb;
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17 private boolean useHostName = false;
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18
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19 public TreeRFBProto getMyRfb() {
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20 return myRfb;
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21 }
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22
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23 public void setMyRfb(TreeRFBProto myRfb) {
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24 this.myRfb = myRfb;
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25 }
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26
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27 public void getNetworkInterfaces() throws SocketException {
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28 int treeId = 0;
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29 for (Enumeration<NetworkInterface> e = NetworkInterface.getNetworkInterfaces(); e.hasMoreElements();) {
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30 NetworkInterface ni = e.nextElement();
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31 if (ni.isUp() && ni.supportsMulticast() && !ni.isLoopback()) {
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32 TreeManagement treeManager = new TreeManagement(ni.getDisplayName(), ConnectionParams.DEFAULT_VNC_ROOT, myRfb.getViewer().getShowTree(),treeId++);
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33 addNetworkInterface(ni, treeManager); // it looks like only last address is used
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34 for (InterfaceAddress ipaddress : ni.getInterfaceAddresses()) {
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35 byte [] netmask = getNetMask(ipaddress);
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36 String hostName = ipaddress.getAddress().toString();
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37 if (useHostName) {
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38 hostName = ipaddress.getAddress().getHostName();
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39 }
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40 treeManager.getList().getFirst().setPort(myRfb.getAcceptPort());
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41 byte[] netaddr = ipaddress.getAddress().getAddress();
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42 for(int i=0;i<netaddr.length;i++) {
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43 netaddr[i] &= netmask[i];
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44 }
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45 treeManager.setNetMask(netmask,netaddr,ipaddress.getAddress());
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46 System.out.println("Interfaces :" + ni.getName() + " treeId=" + treeId + " " + hostName);
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47 }
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48 }
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49 }
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50 }
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51
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52 private byte[] getNetMask(InterfaceAddress ipaddress) {
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53 short prefix = ipaddress.getNetworkPrefixLength();
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54 byte[] netmask = ipaddress.getAddress().getAddress();
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55 for(int i = 0; i < netmask.length; i++) {
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56 int bitpos = i * 8;
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57 if (bitpos+7 < prefix) {
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58 netmask[i] = (byte)0xff;
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59 } else if (bitpos < prefix) {
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60 // ex. bitpos = 0, prefix = 2
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61 // bitpos+8-prefix
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62 // 1100 0000
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63 int bytemask = 0x80;
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64 for(int j = 1; j < bitpos+8-prefix; j++) {
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65 bytemask >>= 1;
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66 bytemask |= 0x80;
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67 }
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68 netmask[i] = (byte)bytemask;
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69 } else {
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70 netmask[i] = 0;
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71 }
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72 }
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73 return netmask ;
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74 }
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75
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76 NetworkInterface getInterface(Socket vncSocket) {
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77 InetAddress address = vncSocket.getInetAddress();
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78 try {
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79 return NetworkInterface.getByInetAddress(address);
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80 } catch (SocketException e) {
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81 return null;
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82 }
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83 }
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84
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85 private void addNetworkInterface(NetworkInterface ni, TreeManagement treeManager) {
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86 setTreeManager(ni.getName(), treeManager);
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87 }
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89 public void setTreeManager(String intf, TreeManagement treeManager) {
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90 interfaces.put(intf, treeManager);
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91 }
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92
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93 public TreeManagement getTreeManager(String intf) {
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94 return interfaces.get(intf);
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95 }
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97
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98 }