Example usage for java.net NetworkInterface getHardwareAddress

Introduction

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

Prototype

public byte[] getHardwareAddress() throws SocketException 

Source Link

Document

Returns the hardware address (usually MAC) of the interface if it has one and if it can be accessed given the current privileges.

Usage

From source file:org.ihsp.data.common.ObjectId.java

private static int createMachineIdentifier() {
    // build a 2-byte machine piece based on NICs info
    int machinePiece;
    try {/*  w ww.java 2  s  . co  m*/
        StringBuilder sb = new StringBuilder();
        Enumeration<NetworkInterface> e = NetworkInterface.getNetworkInterfaces();
        while (e.hasMoreElements()) {
            NetworkInterface ni = e.nextElement();
            sb.append(ni.toString());
            byte[] mac = ni.getHardwareAddress();
            if (mac != null) {
                ByteBuffer bb = ByteBuffer.wrap(mac);
                try {
                    sb.append(bb.getChar());
                    sb.append(bb.getChar());
                    sb.append(bb.getChar());
                } catch (BufferUnderflowException shortHardwareAddressException) { //NOPMD
                    // mac with less than 6 bytes. continue
                }
            }
        }
        machinePiece = sb.toString().hashCode();
    } catch (Throwable t) {
        // exception sometimes happens with IBM JVM, use random
        machinePiece = (new SecureRandom().nextInt());
        log.info("Failed to get machine identifier from network interface, using random number instead", t);
    }
    machinePiece = machinePiece & LOW_ORDER_THREE_BYTES;
    return machinePiece;
}

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From source file:com.asquareb.kaaval.MachineKey.java

/**
 * Method to encrypt a string. Accepts the string to be encrypted and the
 * name of the file to store the key vale which can be used for decryption
 *///w  ww.j  av a2 s  .co  m
public static String encrypt(String property, String app) throws IOException, KaavalException {

    InetAddress ip = null;
    String ipAddress = null;
    ObjectOutputStream os = null;
    NetworkInterface macAddress = null;
    byte[] macId = null;
    Cipher pbeCipher = null;
    Random rand = new Random();
    rand.nextBytes(salt);
    try {
        SecretKeyFactory keyFactory = SecretKeyFactory.getInstance("PBEWithMD5AndDES");
        SecretKey key = keyFactory.generateSecret(new PBEKeySpec(password));
        ip = InetAddress.getLocalHost();
        ipAddress = ip.getHostAddress();
        macAddress = NetworkInterface.getByInetAddress(ip);
        macId = macAddress.getHardwareAddress();
        MachineKey mKey = new MachineKey();
        mKey.api = ipAddress;
        mKey.macad = new String(macId);
        mKey.yek = key;
        mKey.tlas = salt;
        mKey.eti = rand.nextInt(1000);
        os = new ObjectOutputStream(new BufferedOutputStream(new FileOutputStream(app)));
        os.writeObject(mKey);
        os.close();
        pbeCipher = Cipher.getInstance("PBEWithMD5AndDES");
        pbeCipher.init(Cipher.ENCRYPT_MODE, key, new PBEParameterSpec(salt, mKey.eti));
        return base64Encode(pbeCipher.doFinal(property.getBytes()));
    } catch (IOException e) {
        throw new KaavalException(1, "Error in key file during encryption", e);
    } catch (Exception e) {
        throw new KaavalException(2, "Errors during encryption", e);
    } finally {
        if (os != null)
            os.close();
    }
}

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From source file:org.basdroid.common.NetworkUtils.java

/**
 * Returns MAC address of the given interface name.
 * @param interfaceName eth0, wlan0 or NULL=use first interface
 * @return  mac address or empty string// w  ww .j  a v a2s .co m
 */
public static String getMACAddress(String interfaceName) {
    try {
        List<NetworkInterface> interfaces = Collections.list(NetworkInterface.getNetworkInterfaces());
        for (NetworkInterface intf : interfaces) {
            if (interfaceName != null) {
                Log.d(TAG, "intf.getName() = " + intf.getName());
                if (!intf.getName().equalsIgnoreCase(interfaceName))
                    continue;
            }
            byte[] mac = intf.getHardwareAddress();
            if (mac == null)
                return "";
            StringBuilder buf = new StringBuilder();
            for (int idx = 0; idx < mac.length; idx++) {
                buf.append(String.format("%02X:", mac[idx]));
            }
            if (buf.length() > 0)
                buf.deleteCharAt(buf.length() - 1);
            return buf.toString();
        }
    } catch (Exception ex) {
    } // for now eat exceptions
    return "";
}

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From source file:net.ftb.util.OSUtils.java

/**
 * Grabs the mac address of computer and makes it 10 times longer
 * @return a byte array containing mac address
 *///w w  w  .j  a va2 s  . c om
public static byte[] getMacAddress() {
    if (cachedMacAddress != null && cachedMacAddress.length >= 10) {
        return cachedMacAddress;
    }
    try {
        Enumeration<NetworkInterface> networkInterfaces = NetworkInterface.getNetworkInterfaces();
        while (networkInterfaces.hasMoreElements()) {
            NetworkInterface network = networkInterfaces.nextElement();
            byte[] mac = network.getHardwareAddress();
            if (mac != null && mac.length > 0 && !network.isLoopback() && !network.isVirtual()
                    && !network.isPointToPoint() && network.getName().substring(0, 3) != "ham") {
                Logger.logDebug("Interface: " + network.getDisplayName() + " : " + network.getName());
                cachedMacAddress = new byte[mac.length * 10];
                for (int i = 0; i < cachedMacAddress.length; i++) {
                    cachedMacAddress[i] = mac[i - (Math.round(i / mac.length) * mac.length)];
                }
                return cachedMacAddress;
            }
        }
    } catch (SocketException e) {
        Logger.logWarn("Exception getting MAC address", e);
    }

    Logger.logWarn("Failed to get MAC address, using default logindata key");
    return new byte[] { 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15 };
}

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From source file:com.adamkruger.myipaddressinfo.NetworkInfoFragment.java

@TargetApi(Build.VERSION_CODES.GINGERBREAD)
private static List<NetworkInterfaceInfo> getNetworkInterfaceInfos() {
    List<NetworkInterfaceInfo> networkInterfaceInfos = new ArrayList<NetworkInterfaceInfo>();
    try {//from  www .  j  a  va 2 s.  com
        List<NetworkInterface> interfaces = Collections.list(NetworkInterface.getNetworkInterfaces());
        for (NetworkInterface networkInterface : interfaces) {
            NetworkInterfaceInfo networkInterfaceInfo = new NetworkInterfaceInfo();
            networkInterfaceInfo.name = networkInterface.getDisplayName();
            if (android.os.Build.VERSION.SDK_INT >= android.os.Build.VERSION_CODES.GINGERBREAD) {
                byte[] MAC = networkInterface.getHardwareAddress();
                if (MAC != null) {
                    StringBuilder stringBuilder = new StringBuilder(18);
                    for (byte b : MAC) {
                        if (stringBuilder.length() > 0) {
                            stringBuilder.append(':');
                        }
                        stringBuilder.append(String.format("%02x", b));
                    }
                    networkInterfaceInfo.MAC = stringBuilder.toString();
                }

                networkInterfaceInfo.MTU = networkInterface.getMTU();
            }
            List<InetAddress> addresses = Collections.list(networkInterface.getInetAddresses());
            for (InetAddress address : addresses) {
                if (!address.isLoopbackAddress()) {
                    networkInterfaceInfo.ipAddresses.add(InetAddressToString(address));
                }
            }
            if (networkInterfaceInfo.ipAddresses.size() > 0) {
                networkInterfaceInfos.add(networkInterfaceInfo);
            }
        }
    } catch (SocketException e) {
    }

    return networkInterfaceInfos;
}

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From source file:Main.java

private static void displayInterfaceInformation(NetworkInterface netint) throws SocketException {
    System.out.printf("Display name: %s%n", netint.getDisplayName());
    System.out.printf("Name: %s%n", netint.getName());
    Enumeration<InetAddress> inetAddresses = netint.getInetAddresses();
    for (InetAddress inetAddress : Collections.list(inetAddresses)) {
        System.out.printf("InetAddress: %s%n", inetAddress);
    }// w w w  . j  av  a2 s .  co  m

    System.out.printf("Parent: %s%n", netint.getParent());
    System.out.printf("Up? %s%n", netint.isUp());
    System.out.printf("Loopback? %s%n", netint.isLoopback());
    System.out.printf("PointToPoint? %s%n", netint.isPointToPoint());
    System.out.printf("Supports multicast? %s%n", netint.isVirtual());
    System.out.printf("Virtual? %s%n", netint.isVirtual());
    System.out.printf("Hardware address: %s%n", Arrays.toString(netint.getHardwareAddress()));
    System.out.printf("MTU: %s%n", netint.getMTU());

    List<InterfaceAddress> interfaceAddresses = netint.getInterfaceAddresses();
    for (InterfaceAddress addr : interfaceAddresses) {
        System.out.printf("InterfaceAddress: %s%n", addr.getAddress());
    }
    System.out.printf("%n");
    Enumeration<NetworkInterface> subInterfaces = netint.getSubInterfaces();
    for (NetworkInterface networkInterface : Collections.list(subInterfaces)) {
        System.out.printf("%nSubInterface%n");
        displayInterfaceInformation(networkInterface);
    }
    System.out.printf("%n");
}

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From source file:com.distrimind.madkit.kernel.MadkitProperties.java

private static long getMacAddress() {
    long result = 0;
    long result2 = 0;
    try {/*from  ww  w.ja va 2  s .  c o m*/
        final Enumeration<NetworkInterface> e = NetworkInterface.getNetworkInterfaces();
        while (e.hasMoreElements()) {
            final NetworkInterface ni = e.nextElement();

            if (!ni.isLoopback()) {

                long val = getHardwareAddress(ni.getHardwareAddress());
                if (val != 0 && val != 224) {
                    if (ni.isPointToPoint()) {
                        result2 = val;
                    } else {
                        result = val;
                        break;
                    }
                }
            }
        }
    } catch (Exception e) {
        e.printStackTrace();
    }
    if (result == 0)
        result = result2;
    return result;

}

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From source file:org.tinymediamanager.core.License.java

/**
 * returns the MAC address of this instance
 * /*from www .  jav a 2s .co  m*/
 * @return MAC or empty string
 */
public static String getMac() {
    try {
        InetAddress ip = InetAddress.getLocalHost();
        if (ip != null) {
            // we are connected to Internet/router and have an IP
            NetworkInterface ni = NetworkInterface.getByInetAddress(ip);
            if (ni == null) {
                // search for other interfaces
                Enumeration<NetworkInterface> networkInterfaces = NetworkInterface.getNetworkInterfaces();
                while (networkInterfaces.hasMoreElements()) {
                    NetworkInterface network = networkInterfaces.nextElement();
                    if (!network.isLoopback()) {
                        ni = network;
                        break;
                    }
                }
            }
            String macAddress = formatMac(ni.getHardwareAddress());
            if (macAddress != null && !macAddress.isEmpty()) {
                return macAddress;
            }
        }
    } catch (Exception e) {
        e.printStackTrace();
        LOGGER.warn("Error getting MAC from LocalHost IP - not connected to internet/router?");
    }

    try {
        for (Enumeration<NetworkInterface> nif = NetworkInterface.getNetworkInterfaces(); nif
                .hasMoreElements();) {
            NetworkInterface ni = null;
            try {
                ni = nif.nextElement();
                String macAddress = formatMac(ni.getHardwareAddress());
                if (macAddress != null && !macAddress.isEmpty()) {
                    // get first
                    return macAddress;
                }
            } catch (Exception e2) {
                LOGGER.warn("Error getting MAC of " + ni);
            }
        }
        return UNKNOWN_MAC;
    } catch (Exception e) {
        LOGGER.warn("I/O Error on getting network interfaces");
        return UNKNOWN_MAC;
    }
}

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From source file:org.wso2.carbon.apimgt.hybrid.gateway.configurator.Configurator.java

/**
 * Retrieve host name, mac address of the device
 *
 * @return details Map<String, String>
 */// w ww.ja  v a 2 s . c om
protected static Map<String, String> getDeviceDetails() {
    InetAddress ip;
    String hostName = "";
    String macAddress = ConfigConstants.DEFAULT_MAC_ADDRESS;
    Map<String, String> details = new HashMap();
    try {
        ip = InetAddress.getLocalHost();
        hostName = ip.getHostName();
        Enumeration<NetworkInterface> networkInterfaceEnumeration = NetworkInterface.getNetworkInterfaces();
        while (networkInterfaceEnumeration.hasMoreElements()) {
            NetworkInterface networkInterface = networkInterfaceEnumeration.nextElement();
            Enumeration<InetAddress> enumeration = networkInterface.getInetAddresses();
            for (; enumeration.hasMoreElements();) {
                InetAddress address = enumeration.nextElement();
                if (!address.isLoopbackAddress() && !address.isLinkLocalAddress()
                        && address.isSiteLocalAddress()) {
                    byte[] mac = networkInterface.getHardwareAddress();
                    if (mac != null) {
                        StringBuilder sb = new StringBuilder();
                        for (int i = 0; i < mac.length; i++) {
                            //Construct mac address
                            sb.append(String.format("%02X%s", mac[i],
                                    (i < mac.length - 1) ? ConfigConstants.DELIMITER : ""));
                        }
                        macAddress = sb.toString();
                        break;
                    }
                }
            }
        }
    } catch (UnknownHostException | SocketException e) {
        log.error("Error while retrieving mac address", e);
        Runtime.getRuntime().exit(1);
    }
    details.put(ConfigConstants.HOST_NAME, hostName);
    details.put(ConfigConstants.MAC_ADDRESS, macAddress);
    return details;
}

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From source file:com.landenlabs.all_devtool.NetFragment.java

public static String getMacAddr() {
    try {//from  ww w.jav a2  s  .  c  om
        List<NetworkInterface> all = Collections.list(NetworkInterface.getNetworkInterfaces());
        for (NetworkInterface nif : all) {
            if (!nif.getName().equalsIgnoreCase("wlan0"))
                continue;

            byte[] macBytes = nif.getHardwareAddress();
            if (macBytes == null) {
                return "";
            }

            StringBuilder res1 = new StringBuilder();
            for (byte b : macBytes) {
                res1.append(Integer.toHexString(b & 0xFF)).append(":");
            }

            if (res1.length() > 0) {
                res1.deleteCharAt(res1.length() - 1);
            }
            return res1.toString();
        }
    } catch (Exception ex) {
    }
    return "02:00:00:00:00:00";
}

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