Example usage for java.net NetworkInterface getInterfaceAddresses

Introduction

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

Prototype

public java.util.List<InterfaceAddress> getInterfaceAddresses() 

Source Link

Document

Get a List of all or a subset of the InterfaceAddresses of this network interface.

Usage

From source file:Main.java

public static InterfaceAddress getInterfaceAddress(NetworkInterface intf) {
    try {// w  w w.  j  a va  2s  .  co  m
        InterfaceAddress res = null;
        for (Iterator<InterfaceAddress> iterIntAddr = intf.getInterfaceAddresses().iterator(); iterIntAddr
                .hasNext();) {
            InterfaceAddress intAddress = iterIntAddr.next();
            if (!intAddress.getAddress().isLoopbackAddress()) {
                if (isIpv4(intAddress.getAddress()))
                    return intAddress;
                else
                    res = intAddress;
            }
        }
        if (res != null)
            return res;
    } catch (Exception e) {
    }

    return null;
}

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From source file:de.uni_bonn.bit.IPAddressHelper.java

/**
 * Returns a list of IP addresses that can be used to communicate with a peer on a
 * different machine. The IP addresses are in CIDR notation (e.g. 192.168.2.1/24).
 * @return//from w  w w .ja va 2  s.  c  o  m
 */
public static List<String> getAllUsableIPAddresses() {
    List<String> output = new ArrayList<String>();
    try {
        for (NetworkInterface ni : Collections.list(NetworkInterface.getNetworkInterfaces())) {
            for (InterfaceAddress address : ni.getInterfaceAddresses()) {
                if (!address.getAddress().isMulticastAddress() && !address.getAddress().isLinkLocalAddress()
                        && !address.getAddress().isLoopbackAddress()) {
                    output.add(address.getAddress().getHostAddress() + "/" + address.getNetworkPrefixLength());
                }
            }
        }
    } catch (SocketException e) {

    }
    return output;
}

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From source file:com.clustercontrol.repository.util.NodeSearchUtil.java

/**
 * Generate default IP for node search/create dialog
 *///from ww w .  j  a  v a  2s  .c om
public static String generateDefaultIp(String def, int hostAddress) {
    try {
        // Get IP
        InetAddress addr = Inet4Address.getLocalHost();

        // Get subnet mask length
        int prefixLength = -1;
        NetworkInterface ni = NetworkInterface.getByInetAddress(addr);
        for (InterfaceAddress iaddr : ni.getInterfaceAddresses()) {
            if (iaddr.getAddress() instanceof Inet4Address) {
                prefixLength = iaddr.getNetworkPrefixLength();
                break;
            }
        }
        if (-1 == prefixLength) {
            return def;
        }

        byte[] ipRaw = addr.getAddress();
        // For ipv4
        if (4 == ipRaw.length) {
            int counter = prefixLength;
            for (int i = 0; i < ipRaw.length; i++) {
                if (counter < 8) {
                    byte mask = 0x00;
                    for (int j = 0; j < counter; j++) {
                        mask = (byte) (mask >> 1 | 0x80);
                    }
                    ipRaw[i] = (byte) (ipRaw[i] & mask);
                }
                counter -= 8;
            }

            // Re-format/round up hostAddress
            if (hostAddress < 0) {
                hostAddress += Math.pow(2, 32 - prefixLength);
            }

            // Add host address part
            int part = 4;
            while (hostAddress > 0 && part > 0) {
                ipRaw[part - 1] += (hostAddress & 0xff);
                hostAddress >>= 8;
            }
            return Inet4Address.getByAddress(ipRaw).getHostAddress();
        }
        // TODO Support ipv6?
    } catch (UnknownHostException | SocketException e) {
        m_log.debug(e);
    }
    return def;
}

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From source file:com.redhat.rhn.domain.monitoring.satcluster.SatClusterFactory.java

/**
 * Create a new SatCluster (scout)//from   w w w  . jav a  2 s  .com
 * @param user who creates the Scout
 * @return new instance
 */
public static SatCluster createSatCluster(User user) {
    SatCluster retval = new SatCluster();
    CommandTarget ct = new CommandTarget();
    ct.setOrg(user.getOrg());
    ct.setTargetType("cluster");
    retval.setCommandTarget(ct);
    retval.setOrg(user.getOrg());
    retval.setPhysicalLocation(PHYSICAL_LOCATION);
    retval.setTargetType(ct.getTargetType());
    retval.setDeployed("1");
    retval.setLastUpdateUser(user.getLogin());
    retval.setLastUpdateDate(new Date());
    try {
        InetAddress ip = InetAddress.getLocalHost();
        boolean haveIpv4 = ip instanceof Inet4Address;
        if (haveIpv4) {
            retval.setVip(ip.getHostAddress());
        } else {
            retval.setVip6(ip.getHostAddress());
        }
        NetworkInterface ni = NetworkInterface.getByInetAddress(ip);
        for (InterfaceAddress ifa : ni.getInterfaceAddresses()) {
            InetAddress ia = ifa.getAddress();
            if ((ia instanceof Inet4Address) != haveIpv4) {
                if (haveIpv4) {
                    retval.setVip6(ia.getHostAddress());
                } else {
                    retval.setVip(ia.getHostAddress());
                }
                break;
            }
        }
    } catch (Exception e) {
        log.warn("Failed to find out IP host addresses. " + "Setting loopback IPs instead.");
        try {
            NetworkInterface ni = NetworkInterface.getByName("lo");
            for (InterfaceAddress ifa : ni.getInterfaceAddresses()) {
                InetAddress ia = ifa.getAddress();
                if (ia instanceof Inet4Address) {
                    if (StringUtils.isEmpty(retval.getVip())) {
                        retval.setVip(ia.getHostAddress());
                    }
                } else { //IPv6
                    if (StringUtils.isEmpty(retval.getVip6())) {
                        retval.setVip6(ia.getHostAddress());
                    }
                }
            }
        } catch (SocketException se) {
            log.fatal("Failed to find out loopback IPs.");
            se.printStackTrace();
        }
    }
    return retval;
}

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From source file:org.apache.zeppelin.interpreter.remote.RemoteInterpreterUtils.java

public static String findAvailableHostAddress() throws UnknownHostException, SocketException {
    InetAddress address = InetAddress.getLocalHost();
    if (address.isLoopbackAddress()) {
        for (NetworkInterface networkInterface : Collections.list(NetworkInterface.getNetworkInterfaces())) {
            if (!networkInterface.isLoopback()) {
                for (InterfaceAddress interfaceAddress : networkInterface.getInterfaceAddresses()) {
                    InetAddress a = interfaceAddress.getAddress();
                    if (a instanceof Inet4Address) {
                        return a.getHostAddress();
                    }/*  w  ww  .j a  va 2 s.  c  om*/
                }
            }
        }
    }
    return address.getHostAddress();
}

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From source file:org.openhab.binding.network.service.NetworkUtils.java

/**
 * Gets every IPv4 Address on each Interface except the loopback
 * The Address format is ip/subnet//from  www .  j  a v  a2s  . c  o m
 *
 * @return The collected IPv4 Addresses
 */
public static TreeSet<String> getInterfaceIPs() {
    TreeSet<String> interfaceIPs = new TreeSet<String>();

    try {
        // For each interface ...
        for (Enumeration<NetworkInterface> en = NetworkInterface.getNetworkInterfaces(); en
                .hasMoreElements();) {
            NetworkInterface networkInterface = en.nextElement();
            if (!networkInterface.isLoopback()) {

                // .. and for each address ...
                for (Iterator<InterfaceAddress> it = networkInterface.getInterfaceAddresses().iterator(); it
                        .hasNext();) {

                    // ... get IP and Subnet
                    InterfaceAddress interfaceAddress = it.next();
                    interfaceIPs.add(interfaceAddress.getAddress().getHostAddress() + "/"
                            + interfaceAddress.getNetworkPrefixLength());
                }
            }
        }
    } catch (SocketException e) {
    }

    return interfaceIPs;
}

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From source file:es.upv.grc.grcbox.server.GrcBoxServerApplication.java

private static void startServer(String string) throws Exception {
    Component androPiComponent = new Component();
    NetworkInterface iface = NetworkInterface.getByName(string);
    if (iface == null) {
        System.err.println("ERROR: No inner  interface called " + string + " exists");
        System.exit(-1);/*ww  w  . j a  v a2 s.c om*/
    }
    List<InterfaceAddress> addresses = iface.getInterfaceAddresses();
    InterfaceAddress addr = null;
    for (InterfaceAddress interfaceAddress : addresses) {
        if (interfaceAddress.getAddress() instanceof Inet4Address) {
            addr = interfaceAddress;
            break;
        }
    }

    if (addr != null) {
        Server server = androPiComponent.getServers().add(Protocol.HTTP, addr.getAddress().getHostAddress(),
                8080);
        androPiComponent.getDefaultHost().attach(new GrcBoxServerApplication());
        androPiComponent.start();
    } else {
        LOG.severe("The server could not be initialized. No Ipv4 address on innerinterface present");
        System.exit(1);
    }
}

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From source file:com.ghgande.j2mod.modbus.utils.TestUtils.java

/**
 * Returns the last adapter it finds that is not a loopback
 *
 * @return Adapter to use/* www  . ja v  a  2s .co  m*/
 */
public static List<NetworkInterface> getNetworkAdapters() {
    List<NetworkInterface> returnValue = new ArrayList<NetworkInterface>();
    try {

        // Loop round all the adapters

        Enumeration<NetworkInterface> networkInterfaces = NetworkInterface.getNetworkInterfaces();
        while (networkInterfaces.hasMoreElements()) {

            // Get the MAC address if it exists

            NetworkInterface network = networkInterfaces.nextElement();
            byte[] mac = network.getHardwareAddress();
            if (mac != null && mac.length > 0 && network.getInterfaceAddresses() != null) {
                returnValue.add(network);
                logger.debug("Current MAC address : {} ({})", returnValue, network.getDisplayName());
            }
        }
    } catch (Exception e) {
        logger.error("Cannot determine the local MAC address - {}", e.getMessage());
    }
    return returnValue;
}

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From source file:org.openhab.binding.network.service.NetworkService.java

/**
 * Gets every IPv4 Address on each Interface except the loopback
 * The Address format is ip/subnet//w ww  . j a v  a2  s  . c  o m
 *
 * @return The collected IPv4 Addresses
 */
private static TreeSet<String> getInterfaceIPs() {
    TreeSet<String> interfaceIPs = new TreeSet<String>();

    try {
        // For each interface ...
        for (Enumeration<NetworkInterface> en = NetworkInterface.getNetworkInterfaces(); en
                .hasMoreElements();) {
            NetworkInterface networkInterface = en.nextElement();
            if (!networkInterface.isLoopback()) {

                // .. and for each address ...
                for (Iterator<InterfaceAddress> it = networkInterface.getInterfaceAddresses().iterator(); it
                        .hasNext();) {

                    // ... get IP and Subnet
                    InterfaceAddress interfaceAddress = it.next();
                    interfaceIPs.add(interfaceAddress.getAddress().getHostAddress() + "/"
                            + interfaceAddress.getNetworkPrefixLength());
                }
            }
        }
    } catch (SocketException e) {
    }

    return interfaceIPs;
}

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From source file:nz.co.fortytwo.signalk.util.Util.java

public static boolean sameNetwork(String localAddress, String remoteAddress) throws Exception {
    InetAddress addr = InetAddress.getByName(localAddress);
    NetworkInterface networkInterface = NetworkInterface.getByInetAddress(addr);
    short netmask = -1;
    for (InterfaceAddress address : networkInterface.getInterfaceAddresses()) {
        if (address.getAddress().equals(addr)) {
            netmask = address.getNetworkPrefixLength();
        }//from   w w  w .  java2s.com
    }
    byte[] a1 = InetAddress.getByName(localAddress).getAddress();
    byte[] a2 = InetAddress.getByName(remoteAddress).getAddress();
    byte[] m = InetAddress.getByName(normalizeFromCIDR(netmask)).getAddress();

    for (int i = 0; i < a1.length; i++)
        if ((a1[i] & m[i]) != (a2[i] & m[i]))
            return false;

    return true;

}

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