Java Code Examples for java.net.InterfaceAddress#getNetworkPrefixLength()

The following examples show how to use java.net.InterfaceAddress#getNetworkPrefixLength() . You can vote up the ones you like or vote down the ones you don't like, and go to the original project or source file by following the links above each example. You may check out the related API usage on the sidebar.

Example 1

Source File: NetworkPrefixLength.java From jdk8u-jdk with GNU General Public License v2.0

6 votes

public static void main(String[] args) throws Exception {
    Enumeration<NetworkInterface> nics = NetworkInterface.getNetworkInterfaces();

    while (nics.hasMoreElements()) {
        NetworkInterface nic = nics.nextElement();
        for (InterfaceAddress iaddr : nic.getInterfaceAddresses()) {
            boolean valid = checkPrefix(iaddr);
            if (!valid) {
                passed = false;
                debug(nic.getName(), iaddr);
            }
            InetAddress ia = iaddr.getAddress();
            if (ia.isLoopbackAddress() && ia instanceof Inet4Address) {
                // assumption: prefix length will always be 8
                if (iaddr.getNetworkPrefixLength() != 8) {
                    out.println("Expected prefix of 8, got " + iaddr);
                    passed = false;
                }
            }
        }
    }

    if (!passed)
        throw new RuntimeException("Failed: some interfaces have invalid prefix lengths");
}

Example 2

Source File: NetworkPrefixLength.java From jdk8u-dev-jdk with GNU General Public License v2.0

6 votes

public static void main(String[] args) throws Exception {
    Enumeration<NetworkInterface> nics = NetworkInterface.getNetworkInterfaces();

    while (nics.hasMoreElements()) {
        NetworkInterface nic = nics.nextElement();
        for (InterfaceAddress iaddr : nic.getInterfaceAddresses()) {
            boolean valid = checkPrefix(iaddr);
            if (!valid) {
                passed = false;
                debug(nic.getName(), iaddr);
            }
            InetAddress ia = iaddr.getAddress();
            if (ia.isLoopbackAddress() && ia instanceof Inet4Address) {
                // assumption: prefix length will always be 8
                if (iaddr.getNetworkPrefixLength() != 8) {
                    out.println("Expected prefix of 8, got " + iaddr);
                    passed = false;
                }
            }
        }
    }

    if (!passed)
        throw new RuntimeException("Failed: some interfaces have invalid prefix lengths");
}

Example 3

Source File: NetworkPrefixLength.java From jdk8u-jdk with GNU General Public License v2.0

6 votes

public static void main(String[] args) throws Exception {
    Enumeration<NetworkInterface> nics = NetworkInterface.getNetworkInterfaces();

    while (nics.hasMoreElements()) {
        NetworkInterface nic = nics.nextElement();
        for (InterfaceAddress iaddr : nic.getInterfaceAddresses()) {
            boolean valid = checkPrefix(iaddr);
            if (!valid) {
                passed = false;
                debug(nic.getName(), iaddr);
            }
            InetAddress ia = iaddr.getAddress();
            if (ia.isLoopbackAddress() && ia instanceof Inet4Address) {
                // assumption: prefix length will always be 8
                if (iaddr.getNetworkPrefixLength() != 8) {
                    out.println("Expected prefix of 8, got " + iaddr);
                    passed = false;
                }
            }
        }
    }

    if (!passed)
        throw new RuntimeException("Failed: some interfaces have invalid prefix lengths");
}

Example 4

Source File: NetworkPrefixLength.java From jdk8u_jdk with GNU General Public License v2.0

6 votes

public static void main(String[] args) throws Exception {
    Enumeration<NetworkInterface> nics = NetworkInterface.getNetworkInterfaces();

    while (nics.hasMoreElements()) {
        NetworkInterface nic = nics.nextElement();
        for (InterfaceAddress iaddr : nic.getInterfaceAddresses()) {
            boolean valid = checkPrefix(iaddr);
            if (!valid) {
                passed = false;
                debug(nic.getName(), iaddr);
            }
            InetAddress ia = iaddr.getAddress();
            if (ia.isLoopbackAddress() && ia instanceof Inet4Address) {
                // assumption: prefix length will always be 8
                if (iaddr.getNetworkPrefixLength() != 8) {
                    out.println("Expected prefix of 8, got " + iaddr);
                    passed = false;
                }
            }
        }
    }

    if (!passed)
        throw new RuntimeException("Failed: some interfaces have invalid prefix lengths");
}

Example 5

Source File: NetUtils.java From cloudstack with Apache License 2.0

6 votes

public static String[] getLocalCidrs() {
    final String defaultHostIp = getDefaultHostIp();

    final List<String> cidrList = new ArrayList<String>();
    try {
        for (final NetworkInterface ifc : IteratorUtil.enumerationAsIterable(NetworkInterface.getNetworkInterfaces())) {
            if (ifc.isUp() && !ifc.isVirtual() && !ifc.isLoopback()) {
                for (final InterfaceAddress address : ifc.getInterfaceAddresses()) {
                    final InetAddress addr = address.getAddress();
                    final int prefixLength = address.getNetworkPrefixLength();
                    if (prefixLength < MAX_CIDR && prefixLength > 0) {
                        final String ip = addr.getHostAddress();
                        if (ip.equalsIgnoreCase(defaultHostIp)) {
                            cidrList.add(ipAndNetMaskToCidr(ip, getCidrNetmask(prefixLength)));
                        }
                    }
                }
            }
        }
    } catch (final SocketException e) {
        s_logger.warn("UnknownHostException in getLocalCidrs().", e);
    }

    return cidrList.toArray(new String[0]);
}

Example 6

Source File: NetUtils.java From cosmic with Apache License 2.0

6 votes

public static String[] getLocalCidrs() {
    final String defaultHostIp = getDefaultHostIp();

    final List<String> cidrList = new ArrayList<>();
    try {
        for (final NetworkInterface ifc : IteratorUtil.enumerationAsIterable(NetworkInterface.getNetworkInterfaces())) {
            if (ifc.isUp() && !ifc.isVirtual() && !ifc.isLoopback()) {
                for (final InterfaceAddress address : ifc.getInterfaceAddresses()) {
                    final InetAddress addr = address.getAddress();
                    final int prefixLength = address.getNetworkPrefixLength();
                    if (prefixLength < MAX_CIDR && prefixLength > 0) {
                        final String ip = addr.getHostAddress();
                        if (ip.equalsIgnoreCase(defaultHostIp)) {
                            cidrList.add(ipAndNetMaskToCidr(ip, getCidrNetmask(prefixLength)));
                        }
                    }
                }
            }
        }
    } catch (final SocketException e) {
        s_logger.warn("UnknownHostException in getLocalCidrs().", e);
    }

    return cidrList.toArray(new String[0]);
}

Example 7

Source File: NetworkPrefixLength.java From openjdk-jdk9 with GNU General Public License v2.0

6 votes

public static void main(String[] args) throws Exception {
    Enumeration<NetworkInterface> nics = NetworkInterface.getNetworkInterfaces();

    while (nics.hasMoreElements()) {
        NetworkInterface nic = nics.nextElement();
        for (InterfaceAddress iaddr : nic.getInterfaceAddresses()) {
            boolean valid = checkPrefix(iaddr);
            if (!valid) {
                passed = false;
                debug(nic.getName(), iaddr);
            }
            InetAddress ia = iaddr.getAddress();
            if (ia.isLoopbackAddress() && ia instanceof Inet4Address) {
                // assumption: prefix length will always be 8
                if (iaddr.getNetworkPrefixLength() != 8) {
                    out.println("Expected prefix of 8, got " + iaddr);
                    passed = false;
                }
            }
        }
    }

    if (!passed)
        throw new RuntimeException("Failed: some interfaces have invalid prefix lengths");
}

Example 8

Source File: NetworkHelper.java From orWall with GNU General Public License v3.0

6 votes

public static String getMask(String intf){
    try {
        NetworkInterface ntwrk = NetworkInterface.getByName(intf);
        Iterator<InterfaceAddress> addrList = ntwrk.getInterfaceAddresses().iterator();
        while (addrList.hasNext()) {
            InterfaceAddress addr = addrList.next();
            InetAddress ip = addr.getAddress();
            if (ip instanceof Inet4Address) {
                String mask = ip.getHostAddress() + "/" +
                        addr.getNetworkPrefixLength();
                return mask;
            }
        }
    } catch (SocketException e) {
        e.printStackTrace();
    }
    return null;
}

Example 9

Source File: NetworkPrefixLength.java From openjdk-jdk8u-backup with GNU General Public License v2.0

6 votes

public static void main(String[] args) throws Exception {
    Enumeration<NetworkInterface> nics = NetworkInterface.getNetworkInterfaces();

    while (nics.hasMoreElements()) {
        NetworkInterface nic = nics.nextElement();
        for (InterfaceAddress iaddr : nic.getInterfaceAddresses()) {
            boolean valid = checkPrefix(iaddr);
            if (!valid) {
                passed = false;
                debug(nic.getName(), iaddr);
            }
            InetAddress ia = iaddr.getAddress();
            if (ia.isLoopbackAddress() && ia instanceof Inet4Address) {
                // assumption: prefix length will always be 8
                if (iaddr.getNetworkPrefixLength() != 8) {
                    out.println("Expected prefix of 8, got " + iaddr);
                    passed = false;
                }
            }
        }
    }

    if (!passed)
        throw new RuntimeException("Failed: some interfaces have invalid prefix lengths");
}

Example 10

Source File: NetworkPrefixLength.java From openjdk-jdk8u with GNU General Public License v2.0

6 votes

public static void main(String[] args) throws Exception {
    Enumeration<NetworkInterface> nics = NetworkInterface.getNetworkInterfaces();

    while (nics.hasMoreElements()) {
        NetworkInterface nic = nics.nextElement();
        for (InterfaceAddress iaddr : nic.getInterfaceAddresses()) {
            boolean valid = checkPrefix(iaddr);
            if (!valid) {
                passed = false;
                debug(nic.getName(), iaddr);
            }
            InetAddress ia = iaddr.getAddress();
            if (ia.isLoopbackAddress() && ia instanceof Inet4Address) {
                // assumption: prefix length will always be 8
                if (iaddr.getNetworkPrefixLength() != 8) {
                    out.println("Expected prefix of 8, got " + iaddr);
                    passed = false;
                }
            }
        }
    }

    if (!passed)
        throw new RuntimeException("Failed: some interfaces have invalid prefix lengths");
}

Example 11

Source File: NetworkPrefixLength.java From jdk8u60 with GNU General Public License v2.0

6 votes

public static void main(String[] args) throws Exception {
    Enumeration<NetworkInterface> nics = NetworkInterface.getNetworkInterfaces();

    while (nics.hasMoreElements()) {
        NetworkInterface nic = nics.nextElement();
        for (InterfaceAddress iaddr : nic.getInterfaceAddresses()) {
            boolean valid = checkPrefix(iaddr);
            if (!valid) {
                passed = false;
                debug(nic.getName(), iaddr);
            }
            InetAddress ia = iaddr.getAddress();
            if (ia.isLoopbackAddress() && ia instanceof Inet4Address) {
                // assumption: prefix length will always be 8
                if (iaddr.getNetworkPrefixLength() != 8) {
                    out.println("Expected prefix of 8, got " + iaddr);
                    passed = false;
                }
            }
        }
    }

    if (!passed)
        throw new RuntimeException("Failed: some interfaces have invalid prefix lengths");
}

Example 12

Source File: NetworkUtils.java From g4proxy with Apache License 2.0

6 votes

/**
 * @deprecated This method is no longer used by LittleProxy and may be removed in a future release.
 */
@Deprecated
public static InetAddress firstLocalNonLoopbackIpv4Address() {
    try {
        Enumeration<NetworkInterface> networkInterfaces = NetworkInterface
                .getNetworkInterfaces();
        while (networkInterfaces.hasMoreElements()) {
            NetworkInterface networkInterface = networkInterfaces
                    .nextElement();
            if (networkInterface.isUp()) {
                for (InterfaceAddress ifAddress : networkInterface
                        .getInterfaceAddresses()) {
                    if (ifAddress.getNetworkPrefixLength() > 0
                            && ifAddress.getNetworkPrefixLength() <= 32
                            && !ifAddress.getAddress().isLoopbackAddress()) {
                        return ifAddress.getAddress();
                    }
                }
            }
        }
        return null;
    } catch (SocketException se) {
        return null;
    }
}

Example 13

Source File: NetworkPrefixLength.java From TencentKona-8 with GNU General Public License v2.0

6 votes

public static void main(String[] args) throws Exception {
    Enumeration<NetworkInterface> nics = NetworkInterface.getNetworkInterfaces();

    while (nics.hasMoreElements()) {
        NetworkInterface nic = nics.nextElement();
        for (InterfaceAddress iaddr : nic.getInterfaceAddresses()) {
            boolean valid = checkPrefix(iaddr);
            if (!valid) {
                passed = false;
                debug(nic.getName(), iaddr);
            }
            InetAddress ia = iaddr.getAddress();
            if (ia.isLoopbackAddress() && ia instanceof Inet4Address) {
                // assumption: prefix length will always be 8
                if (iaddr.getNetworkPrefixLength() != 8) {
                    out.println("Expected prefix of 8, got " + iaddr);
                    passed = false;
                }
            }
        }
    }

    if (!passed)
        throw new RuntimeException("Failed: some interfaces have invalid prefix lengths");
}

Example 14

Source File: NetworkPrefixLength.java From dragonwell8_jdk with GNU General Public License v2.0

6 votes

public static void main(String[] args) throws Exception {
    Enumeration<NetworkInterface> nics = NetworkInterface.getNetworkInterfaces();

    while (nics.hasMoreElements()) {
        NetworkInterface nic = nics.nextElement();
        for (InterfaceAddress iaddr : nic.getInterfaceAddresses()) {
            boolean valid = checkPrefix(iaddr);
            if (!valid) {
                passed = false;
                debug(nic.getName(), iaddr);
            }
            InetAddress ia = iaddr.getAddress();
            if (ia.isLoopbackAddress() && ia instanceof Inet4Address) {
                // assumption: prefix length will always be 8
                if (iaddr.getNetworkPrefixLength() != 8) {
                    out.println("Expected prefix of 8, got " + iaddr);
                    passed = false;
                }
            }
        }
    }

    if (!passed)
        throw new RuntimeException("Failed: some interfaces have invalid prefix lengths");
}

Example 15

Source File: NetworkPrefixLength.java From hottub with GNU General Public License v2.0

5 votes

public static void main(String[] args) throws Exception {
    Enumeration<NetworkInterface> nics = NetworkInterface.getNetworkInterfaces();

    while (nics.hasMoreElements()) {
        NetworkInterface nic = nics.nextElement();
        for (InterfaceAddress iaddr : nic.getInterfaceAddresses()) {
            boolean valid = checkPrefix(iaddr);
            if (!valid) {
                passed = false;
                debug(nic.getName(), iaddr);
            }
            InetAddress ia = iaddr.getAddress();
            if (ia.isLoopbackAddress() && ia instanceof Inet4Address) {
                // assumption: prefix length will always be 8
                if (iaddr.getNetworkPrefixLength() != 8) {
                    out.println("Expected prefix of 8, got " + iaddr);
                    passed = false;
                }
            }
        }
    }

    if (!passed)
        throw new RuntimeException("Failed: some interfaces have invalid prefix lengths");
}

Example 16

Source File: IfConfig.java From crate with Apache License 2.0

5 votes

/** format internet address: java's default doesn't include everything useful */
private static String formatAddress(InterfaceAddress interfaceAddress) throws IOException {
    StringBuilder sb = new StringBuilder();

    InetAddress address = interfaceAddress.getAddress();
    if (address instanceof Inet6Address) {
        sb.append("inet6 ");
        sb.append(NetworkAddress.format(address));
        sb.append(" prefixlen:");
        sb.append(interfaceAddress.getNetworkPrefixLength());
    } else {
        sb.append("inet ");
        sb.append(NetworkAddress.format(address));
        int netmask = 0xFFFFFFFF << (32 - interfaceAddress.getNetworkPrefixLength());
        sb.append(" netmask:").append(NetworkAddress.format(InetAddress.getByAddress(new byte[]{
            (byte) (netmask >>> 24),
            (byte) (netmask >>> 16 & 0xFF),
            (byte) (netmask >>> 8 & 0xFF),
            (byte) (netmask & 0xFF)
        })));
        InetAddress broadcast = interfaceAddress.getBroadcast();
        if (broadcast != null) {
            sb.append(" broadcast:").append(NetworkAddress.format(broadcast));
        }
    }
    if (address.isLoopbackAddress()) {
        sb.append(" scope:host");
    } else if (address.isLinkLocalAddress()) {
        sb.append(" scope:link");
    } else if (address.isSiteLocalAddress()) {
        sb.append(" scope:site");
    }
    return sb.toString();
}

Example 17

Source File: NetworkAddressFactoryImpl.java From TVRemoteIME with GNU General Public License v2.0

5 votes

public Short getAddressNetworkPrefixLength(InetAddress inetAddress) {
    synchronized (networkInterfaces) {
        for (NetworkInterface iface : networkInterfaces) {
            for (InterfaceAddress interfaceAddress : getInterfaceAddresses(iface)) {
                if (interfaceAddress != null && interfaceAddress.getAddress().equals(inetAddress)) {
                    short prefix = interfaceAddress.getNetworkPrefixLength();
                    if(prefix > 0 && prefix < 32) return prefix; // some network cards return -1
                    return null;
                }
            }
        }
    }
    return null;
}

Example 18

Source File: NetworkAddressFactoryImpl.java From DroidDLNA with GNU General Public License v3.0

5 votes

public Short getAddressNetworkPrefixLength(InetAddress inetAddress) {
    synchronized (networkInterfaces) {
        for (NetworkInterface iface : networkInterfaces) {
            for (InterfaceAddress interfaceAddress : getInterfaceAddresses(iface)) {
                if (interfaceAddress != null && interfaceAddress.getAddress().equals(inetAddress)) {
                    short prefix = interfaceAddress.getNetworkPrefixLength();
                    if(prefix > 0 && prefix < 32) return prefix; // some network cards return -1
                    return null;
                }
            }
        }
    }
    return null;
}

Example 19

Source File: LinkAddress.java From android_9.0.0_r45 with Apache License 2.0

2 votes

/**
 * Constructs a new {@code LinkAddress} from an {@code InterfaceAddress}.
 * The flags are set to zero and the scope is determined from the address.
 * @param interfaceAddress The interface address.
 * @hide
 */
public LinkAddress(InterfaceAddress interfaceAddress) {
    this(interfaceAddress.getAddress(),
         interfaceAddress.getNetworkPrefixLength());
}

Example 20

Source File: HostName.java From IPAddress with Apache License 2.0

2 votes

/**
 * Constructs a host name from an InterfaceAddress.
 * 
 * @param interfaceAddr
 */
public HostName(InterfaceAddress interfaceAddr) {
	this(interfaceAddr.getAddress(), (int) interfaceAddr.getNetworkPrefixLength());
}