Example usage for java.net NetworkInterface getNetworkInterfaces

List of usage examples for java.net NetworkInterface getNetworkInterfaces

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Introduction

In this page you can find the example usage for java.net NetworkInterface getNetworkInterfaces.

Prototype

public static Enumeration<NetworkInterface> getNetworkInterfaces() throws SocketException

Source Link

Document

Returns an Enumeration of all the interfaces on this machine.

Usage

From source file:ca.psiphon.PsiphonTunnel.java

private static PrivateAddress selectPrivateAddress() throws Exception {
    // Select one of 10.0.0.1, 172.16.0.1, or 192.168.0.1 depending on
    // which private address range isn't in use.

    Map<String, PrivateAddress> candidates = new HashMap<String, PrivateAddress>();
    candidates.put("10", new PrivateAddress("10.0.0.1", "10.0.0.0", 8, "10.0.0.2"));
    candidates.put("172", new PrivateAddress("172.16.0.1", "172.16.0.0", 12, "172.16.0.2"));
    candidates.put("192", new PrivateAddress("192.168.0.1", "192.168.0.0", 16, "192.168.0.2"));
    candidates.put("169", new PrivateAddress("169.254.1.1", "169.254.1.0", 24, "169.254.1.2"));

    List<NetworkInterface> netInterfaces;
    try {/*w w  w .  j  a  v  a2 s  .  c  o  m*/
        netInterfaces = Collections.list(NetworkInterface.getNetworkInterfaces());
    } catch (SocketException e) {
        throw new Exception("selectPrivateAddress failed", e);
    }

    for (NetworkInterface netInterface : netInterfaces) {
        for (InetAddress inetAddress : Collections.list(netInterface.getInetAddresses())) {
            String ipAddress = inetAddress.getHostAddress();
            if (InetAddressUtils.isIPv4Address(ipAddress)) {
                if (ipAddress.startsWith("10.")) {
                    candidates.remove("10");
                } else if (ipAddress.length() >= 6 && ipAddress.substring(0, 6).compareTo("172.16") >= 0
                        && ipAddress.substring(0, 6).compareTo("172.31") <= 0) {
                    candidates.remove("172");
                } else if (ipAddress.startsWith("192.168")) {
                    candidates.remove("192");
                }
            }
        }
    }

    if (candidates.size() > 0) {
        return candidates.values().iterator().next();
    }

    throw new Exception("no private address available");
}

From source file:com.taobao.adfs.util.Utilities.java

public static List<InetAddress> getInetAddressList() throws IOException {
    List<InetAddress> addressList = new ArrayList<InetAddress>();
    Enumeration<NetworkInterface> netInterfaces = NetworkInterface.getNetworkInterfaces();
    while (netInterfaces.hasMoreElements()) {
        NetworkInterface netInterface = netInterfaces.nextElement();
        Enumeration<InetAddress> inetAddresses = netInterface.getInetAddresses();
        while (inetAddresses.hasMoreElements()) {
            InetAddress inetAddress = inetAddresses.nextElement();
            if (inetAddress != null && inetAddress instanceof Inet4Address)
                addressList.add(inetAddress);
        }/*from w  ww . j a  v  a 2  s  .  c om*/
    }

    List<InetAddress> newAddressList = getWanInetAddressList(addressList);
    newAddressList.addAll(getLanInetAddressList(addressList));
    newAddressList.addAll(getLoopbackInetAddressList(addressList));
    newAddressList.addAll(getLinklocalInetAddressList(addressList));

    return newAddressList;
}

From source file:com.example.zoetablet.BasicFragmentActivity.java

protected static String getLocalIpAddress() {
    try {//  w ww  .j a v a2  s.  com
        for (Enumeration<NetworkInterface> en = NetworkInterface.getNetworkInterfaces(); en
                .hasMoreElements();) {
            NetworkInterface intf = en.nextElement();
            for (Enumeration<InetAddress> enumIpAddr = intf.getInetAddresses(); enumIpAddr.hasMoreElements();) {
                InetAddress inetAddress = enumIpAddr.nextElement();
                if (!inetAddress.isLoopbackAddress()) {
                    return inetAddress.getHostAddress().toString();
                }
            }
        }
    } catch (SocketException ex) {
        Log.e("Tablet", ex.toString());
    }
    return null;
}

From source file:com.buaa.cfs.utils.NetUtils.java

/**
 * Return an InetAddress for each interface that matches the given subnet specified using CIDR notation.
 *
 * @param subnet              subnet specified using CIDR notation
 * @param returnSubinterfaces whether to return IPs associated with subinterfaces
 *
 * @throws IllegalArgumentException if subnet is invalid
 *///from  w  w  w .  j av a 2  s .  c om
public static List<InetAddress> getIPs(String subnet, boolean returnSubinterfaces) {
    List<InetAddress> addrs = new ArrayList<InetAddress>();
    SubnetInfo subnetInfo = new SubnetUtils(subnet).getInfo();
    Enumeration<NetworkInterface> nifs;

    try {
        nifs = NetworkInterface.getNetworkInterfaces();
    } catch (SocketException e) {
        LOG.error("Unable to get host interfaces", e);
        return addrs;
    }

    while (nifs.hasMoreElements()) {
        NetworkInterface nif = nifs.nextElement();
        // NB: adding addresses even if the nif is not up
        addMatchingAddrs(nif, subnetInfo, addrs);

        if (!returnSubinterfaces) {
            continue;
        }
        Enumeration<NetworkInterface> subNifs = nif.getSubInterfaces();
        while (subNifs.hasMoreElements()) {
            addMatchingAddrs(subNifs.nextElement(), subnetInfo, addrs);
        }
    }
    return addrs;
}

From source file:com.lfv.yada.net.client.ClientNetworkManager.java

private InetAddress getLocalHostFix() throws SocketException {
    // Hack for getting the localhost inetaddress on linux systems
    Enumeration e = NetworkInterface.getNetworkInterfaces();
    while (e.hasMoreElements()) {
        NetworkInterface networkInterface = (NetworkInterface) e.nextElement();
        Enumeration e2 = networkInterface.getInetAddresses();
        while (e2.hasMoreElements()) {
            InetAddress ip = (InetAddress) e2.nextElement();
            if (!ip.isLoopbackAddress() && ip.getHostAddress().indexOf(":") == -1) {
                return ip;
            }//w w  w .  j  a v  a 2s .  co m
        }
    }
    return null;
}

From source file:it.isislab.sof.core.engine.hadoop.sshclient.connection.SofManager.java

/**
 * //  w ww .  ja v  a  2  s .  co  m
 * @return a unique filename. If there is execption, it will be return MD5(System.currentTimeMillis)
 */
public static String getMexID() {
    InetAddress addr;
    try {
        addr = InetAddress.getLocalHost();
        Enumeration<NetworkInterface> networks = NetworkInterface.getNetworkInterfaces();
        while (networks.hasMoreElements()) {
            NetworkInterface network = networks.nextElement();
            byte[] mac = network.getHardwareAddress();

            if (mac != null) {
                StringBuilder sb = new StringBuilder();
                for (int i = 0; i < mac.length; i++) {
                    sb.append(String.format("%02X%s", mac[i], (i < mac.length - 1) ? "-" : ""));
                }
                return DigestUtils.md5Hex(sb.toString() + (System.currentTimeMillis() + ""));
            }
        }
        return DigestUtils.md5Hex(System.currentTimeMillis() + "");
    } catch (UnknownHostException e) {
        e.printStackTrace();
        return DigestUtils.md5Hex(System.currentTimeMillis() + "");
    } catch (SocketException e) {
        e.printStackTrace();
        return DigestUtils.md5Hex(System.currentTimeMillis() + "");
    }
}

From source file:com.jagornet.dhcp.server.JagornetDhcpServer.java

public static List<InetAddress> getAllIPv4Addrs() {
    if (allIPv4Addrs == null) {
        allIPv4Addrs = new ArrayList<InetAddress>();
        try {//  w  ww. ja  v  a 2  s.c o m
            Enumeration<NetworkInterface> localInterfaces = NetworkInterface.getNetworkInterfaces();
            if (localInterfaces != null) {
                while (localInterfaces.hasMoreElements()) {
                    NetworkInterface netIf = localInterfaces.nextElement();
                    Enumeration<InetAddress> ifAddrs = netIf.getInetAddresses();
                    while (ifAddrs.hasMoreElements()) {
                        InetAddress ip = ifAddrs.nextElement();
                        if (ip instanceof Inet4Address) {
                            allIPv4Addrs.add(ip);
                        }
                    }
                }
            } else {
                log.error("No network interfaces found!");
            }
        } catch (IOException ex) {
            log.error("Failed to get IPv4 addresses: " + ex);
        }
    }
    return allIPv4Addrs;
}

From source file:net.spfbl.core.Core.java

private static boolean hasInterface(String netInterface) {
    try {//  ww  w.j a va2 s.  c o  m
        Enumeration<NetworkInterface> nets = NetworkInterface.getNetworkInterfaces();
        for (NetworkInterface netint : Collections.list(nets)) {
            if (netInterface.equals(netint.getName())) {
                return true;
            }
        }
        return false;
    } catch (SocketException ex) {
        return false;
    }
}

From source file:com.rockagen.commons.util.CommUtil.java

/**
 * Returns the hardware address (usually MAC) of the interface if it
 * has one and if it can be accessed given the current privileges.
 *
 * @return a char array containing the first address or <code>null</code> if
 * the address doesn't exist or is not accessible.
 * @throws SocketException if an I/O error occurs.
 * @since 1.6/*  w w w  .j a va2  s. c om*/
 */
public static String[] getMacAddrs() throws SocketException {
    Enumeration<NetworkInterface> e = NetworkInterface.getNetworkInterfaces();
    StringBuilder buf = new StringBuilder();
    while (e.hasMoreElements()) {
        NetworkInterface network = e.nextElement();
        if (network != null) {
            byte[] nmac = network.getHardwareAddress();
            if (nmac != null) {
                buf.append(hexdump(nmac));
                buf.append("#");
            }
        }
    }
    return buf.toString().split("#");
}

From source file:org.wso2.carbon.appmanager.integration.ui.APPManagerIntegrationTest.java

protected String getNetworkIPAddress() {
    String networkIpAddress = null;
    try {/*from w ww .  ja v a2s  .  co m*/
        String localhost = InetAddress.getLocalHost().getHostAddress();
        Enumeration<NetworkInterface> e = NetworkInterface.getNetworkInterfaces();
        while (e.hasMoreElements()) {
            NetworkInterface ni = (NetworkInterface) e.nextElement();
            if (ni.isLoopback())
                continue;
            if (ni.isPointToPoint())
                continue;
            Enumeration<InetAddress> addresses = ni.getInetAddresses();
            while (addresses.hasMoreElements()) {
                InetAddress address = (InetAddress) addresses.nextElement();
                if (address instanceof Inet4Address) {
                    String ip = address.getHostAddress();
                    if (!ip.equals(localhost)) {
                        networkIpAddress = ip;
                    }

                }
            }
        }
    } catch (UnknownHostException e) {
        log.error("Error occurred due to an unknown host.", e);
    } catch (SocketException e) {
        log.error("Error occurred with Socket connections", e);
    }
    return networkIpAddress;
}