Example usage for java.net InterfaceAddress getNetworkPrefixLength

List of usage examples for java.net InterfaceAddress getNetworkPrefixLength

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Introduction

In this page you can find the example usage for java.net InterfaceAddress getNetworkPrefixLength.

Prototype

public short getNetworkPrefixLength()

Source Link

Document

Returns the network prefix length for this address.

Usage

From source file:Main.java

public static void printParameter(NetworkInterface ni) throws SocketException {
    System.out.println(" Name = " + ni.getName());
    System.out.println(" Display Name = " + ni.getDisplayName());
    System.out.println(" Is up = " + ni.isUp());
    System.out.println(" Support multicast = " + ni.supportsMulticast());
    System.out.println(" Is loopback = " + ni.isLoopback());
    System.out.println(" Is virtual = " + ni.isVirtual());
    System.out.println(" Is point to point = " + ni.isPointToPoint());
    System.out.println(" Hardware address = " + ni.getHardwareAddress());
    System.out.println(" MTU = " + ni.getMTU());

    System.out.println("\nList of Interface Addresses:");
    List<InterfaceAddress> list = ni.getInterfaceAddresses();
    Iterator<InterfaceAddress> it = list.iterator();

    while (it.hasNext()) {
        InterfaceAddress ia = it.next();
        System.out.println(" Address = " + ia.getAddress());
        System.out.println(" Broadcast = " + ia.getBroadcast());
        System.out.println(" Network prefix length = " + ia.getNetworkPrefixLength());
        System.out.println("");
    }// w  ww.j ava2  s  . com
}

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

/**
 * Generate default IP for node search/create dialog
 *///from  w w  w. ja v  a 2s .c o m
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;
}

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/* w ww.j  a  v a  2 s  .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;
}

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// w  w w  .  ja  v  a2s  .c  om
 */
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;
}

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// ww  w  .ja  v a  2 s  . com
 *
 * @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;
}

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();
        }// w  ww .jav  a2 s.  c  o m
    }
    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;

}

From source file:android_network.hetnet.vpn_service.Util.java

public static String getNetworkInfo(Context context) {
    StringBuilder sb = new StringBuilder();
    ConnectivityManager cm = (ConnectivityManager) context.getSystemService(Context.CONNECTIVITY_SERVICE);

    NetworkInfo ani = cm.getActiveNetworkInfo();
    List<NetworkInfo> listNI = new ArrayList<>();

    if (Build.VERSION.SDK_INT < Build.VERSION_CODES.LOLLIPOP)
        listNI.addAll(Arrays.asList(cm.getAllNetworkInfo()));
    else/* ww  w. j  ava 2  s . com*/
        for (Network network : cm.getAllNetworks()) {
            NetworkInfo ni = cm.getNetworkInfo(network);
            if (ni != null)
                listNI.add(ni);
        }

    for (NetworkInfo ni : listNI) {
        sb.append(ni.getTypeName()).append('/').append(ni.getSubtypeName()).append(' ')
                .append(ni.getDetailedState())
                .append(TextUtils.isEmpty(ni.getExtraInfo()) ? "" : " " + ni.getExtraInfo())
                .append(ni.getType() == ConnectivityManager.TYPE_MOBILE
                        ? " " + Util.getNetworkGeneration(ni.getSubtype())
                        : "")
                .append(ni.isRoaming() ? " R" : "")
                .append(ani != null && ni.getType() == ani.getType() && ni.getSubtype() == ani.getSubtype()
                        ? " *"
                        : "")
                .append("\r\n");
    }

    try {
        Enumeration<NetworkInterface> nis = NetworkInterface.getNetworkInterfaces();
        if (nis != null)
            while (nis.hasMoreElements()) {
                NetworkInterface ni = nis.nextElement();
                if (ni != null && !ni.isLoopback()) {
                    List<InterfaceAddress> ias = ni.getInterfaceAddresses();
                    if (ias != null)
                        for (InterfaceAddress ia : ias)
                            sb.append(ni.getName()).append(' ').append(ia.getAddress().getHostAddress())
                                    .append('/').append(ia.getNetworkPrefixLength()).append(' ')
                                    .append(ni.getMTU()).append(' ').append(ni.isUp() ? '^' : 'v')
                                    .append("\r\n");
                }
            }
    } catch (Throwable ex) {
        sb.append(ex.toString()).append("\r\n");
    }

    if (sb.length() > 2)
        sb.setLength(sb.length() - 2);

    return sb.toString();
}

From source file:com.master.metehan.filtereagle.Util.java

public static String getNetworkInfo(Context context) {
    StringBuilder sb = new StringBuilder();
    ConnectivityManager cm = (ConnectivityManager) context.getSystemService(Context.CONNECTIVITY_SERVICE);

    NetworkInfo ani = cm.getActiveNetworkInfo();
    List<NetworkInfo> listNI = new ArrayList<>();

    if (Build.VERSION.SDK_INT < Build.VERSION_CODES.LOLLIPOP)
        listNI.addAll(Arrays.asList(cm.getAllNetworkInfo()));
    else/*from  w ww .j  av a2 s . co  m*/
        for (Network network : cm.getAllNetworks()) {
            NetworkInfo ni = cm.getNetworkInfo(network);
            if (ni != null)
                listNI.add(ni);
        }

    for (NetworkInfo ni : listNI) {
        sb.append(ni.getTypeName()).append('/').append(ni.getSubtypeName()).append(' ')
                .append(ni.getDetailedState())
                .append(TextUtils.isEmpty(ni.getExtraInfo()) ? "" : " " + ni.getExtraInfo())
                .append(ni.getType() == ConnectivityManager.TYPE_MOBILE
                        ? " " + Util.getNetworkGeneration(ni.getSubtype())
                        : "")
                .append(ni.isRoaming() ? " R" : "")
                .append(ani != null && ni.getType() == ani.getType() && ni.getSubtype() == ani.getSubtype()
                        ? " *"
                        : "")
                .append("\r\n");
    }

    try {
        Enumeration<NetworkInterface> nis = NetworkInterface.getNetworkInterfaces();
        if (nis != null) {
            sb.append("\r\n");
            while (nis.hasMoreElements()) {
                NetworkInterface ni = nis.nextElement();
                if (ni != null) {
                    List<InterfaceAddress> ias = ni.getInterfaceAddresses();
                    if (ias != null)
                        for (InterfaceAddress ia : ias)
                            sb.append(ni.getName()).append(' ').append(ia.getAddress().getHostAddress())
                                    .append('/').append(ia.getNetworkPrefixLength()).append(' ')
                                    .append(ni.getMTU()).append("\r\n");
                }
            }
        }
    } catch (Throwable ex) {
        sb.append(ex.toString()).append("\r\n");
    }

    if (sb.length() > 2)
        sb.setLength(sb.length() - 2);

    return sb.toString();
}

From source file:org.openhab.binding.networkhealth.discovery.NetworkHealthDiscoveryService.java

/**
 * Gets every IPv4 Address on each Interface except the loopback
 * The Address format is ip/subnet//from w  w  w .  ja  v a 2 s .c o m
 * @return The collected IPv4 Addresses
 */
private 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;
}

From source file:org.openhab.binding.plclogo.internal.discovery.PLCDiscoveryService.java

@Override
protected void startScan() {
    stopScan();/*w w  w  .j  a  v  a 2 s.  c o  m*/

    logger.debug("Start scan for LOGO! bridge");

    Enumeration<NetworkInterface> devices = null;
    try {
        devices = NetworkInterface.getNetworkInterfaces();
    } catch (SocketException exception) {
        logger.warn("LOGO! bridge discovering: {}.", exception.toString());
    }

    Set<String> addresses = new TreeSet<>();
    while ((devices != null) && devices.hasMoreElements()) {
        NetworkInterface device = devices.nextElement();
        try {
            if (!device.isUp() || device.isLoopback()) {
                continue;
            }
        } catch (SocketException exception) {
            logger.warn("LOGO! bridge discovering: {}.", exception.toString());
        }
        for (InterfaceAddress iface : device.getInterfaceAddresses()) {
            InetAddress address = iface.getAddress();
            if (address instanceof Inet4Address) {
                String prefix = String.valueOf(iface.getNetworkPrefixLength());
                SubnetUtils utilities = new SubnetUtils(address.getHostAddress() + "/" + prefix);
                addresses.addAll(Arrays.asList(utilities.getInfo().getAllAddresses()));
            }
        }
    }

    ExecutorService executor = Executors.newFixedThreadPool(Runtime.getRuntime().availableProcessors());
    for (String address : addresses) {
        try {
            executor.execute(new Runner(address));
        } catch (RejectedExecutionException exception) {
            logger.warn("LOGO! bridge discovering: {}.", exception.toString());
        }
    }

    try {
        executor.awaitTermination(CONNECTION_TIMEOUT * addresses.size(), TimeUnit.MILLISECONDS);
    } catch (InterruptedException exception) {
        logger.warn("LOGO! bridge discovering: {}.", exception.toString());
    }
    executor.shutdown();

    stopScan();
}