Package org.apache.commons.net.util

Examples of org.apache.commons.net.util.SubnetUtils

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   * @throws IllegalArgumentException if subnet is invalid
   */
  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) {
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   * @return true if the given string is a subnet specified
   *     using CIDR notation, false otherwise
   */
  public static boolean isValidSubnet(String subnet) {
    try {
      new SubnetUtils(subnet);
      return true;
    } catch (IllegalArgumentException iae) {
      return false;
    }
  }
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   * @throws IllegalArgumentException if subnet is invalid
   */
  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) {
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        new SubnetUtils("192.168.0.1/1");
    }

    public void testInvalidMasks(){
        try {
            new SubnetUtils("192.168.0.1/33");
            fail("Should have thrown IllegalArgumentException");
        } catch (IllegalArgumentException expected) {
        }
        try {
            new SubnetUtils("192.168.0.1/0");
            fail("Should have thrown IllegalArgumentException");
        } catch (IllegalArgumentException expected) {
        }
        try {
            new SubnetUtils("192.168.0.1","0.0.0.0");
            fail("Should have thrown IllegalArgumentException");
        } catch (IllegalArgumentException expected) {
        }
    }
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        final String networkAddresses[] = new String[] { "192.0.0.0", "192.168.0.0", "192.168.0.0", "192.168.0.0" };
        final String cidrSignatures[] = new String[] { "192.168.0.1/8", "192.168.0.1/16", "192.168.0.1/24", "192.168.0.1/29" };
        final int usableAddresses[] = new int[] { 16777214, 65534, 254, 6 };

        for (int i = 0; i < masks.length; ++i) {
            SubnetUtils utils = new SubnetUtils(address, masks[i]);
            SubnetInfo info = utils.getInfo();
            assertEquals(bcastAddresses[i], info.getBroadcastAddress());
            assertEquals(cidrSignatures[i], info.getCidrSignature());
            assertEquals(lowAddresses[i], info.getLowAddress());
            assertEquals(highAddresses[i], info.getHighAddress());
            assertEquals(networkAddresses[i], info.getNetworkAddress());
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         String highA[]=new String[]{ "192.168.15.7",     "192.168.15.7",     "192.168.15.7" };
         String cidrS[]=new String[]{ "192.168.15.7/30",  "192.168.15.7/31",  "192.168.15.7/32"};
         int usableAd[]=new int[]   { 4 ,                 2,                  1};

         for (int i = 0; i < masks.length; ++i) {
             SubnetUtils utils = new SubnetUtils(address, masks[i]);
             utils.setInclusiveHostCount(true);
             SubnetInfo info = utils.getInfo();
             assertEquals("ci "+masks[i], cidrS[i], info.getCidrSignature());
             assertEquals("bc "+masks[i], bcast[i], info.getBroadcastAddress());
             assertEquals("ac "+masks[i], usableAd[i], info.getAddressCount());
             assertEquals("nw "+masks[i], netwk[i], info.getNetworkAddress());
             assertEquals("lo "+masks[i], lowAd[i], info.getLowAddress());
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        String cidrS[]=new String[]{ "192.168.15.7/30",  "192.168.15.7/31",  "192.168.15.7/32"};
        int usableAd[]=new int[]   { 2 ,                 0,                  0};
       // low and high addresses don't exist

        for (int i = 0; i < masks.length; ++i) {
            SubnetUtils utils = new SubnetUtils(address, masks[i]);
            utils.setInclusiveHostCount(false);
            SubnetInfo info = utils.getInfo();
            assertEquals("ci "+masks[i], cidrS[i], info.getCidrSignature());
            assertEquals("bc "+masks[i], bcast[i], info.getBroadcastAddress());
            assertEquals("nw "+masks[i], netwk[i], info.getNetworkAddress());
            assertEquals("ac "+masks[i], usableAd[i], info.getAddressCount());
            assertEquals("lo "+masks[i], lowAd[i], info.getLowAddress());
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        }
    }

    // TODO Lower address test
    public void testAddresses() {
        SubnetUtils utils = new SubnetUtils("192.168.0.1/29");
        SubnetInfo info = utils.getInfo();
        assertTrue(info.isInRange("192.168.0.1"));
        // We don't count the broadcast address as usable
        assertFalse(info.isInRange("192.168.0.7"));
        assertFalse(info.isInRange("192.168.0.8"));
        assertFalse(info.isInRange("10.10.2.1"));
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        assertFalse(info.isInRange("192.168.0.255"));
    }

    public void testZeroNetmaskBits() {
        try {
            new SubnetUtils("192.168.0.1/0");
            fail("Mask /0 should have generated an IllegalArgumentException");
        }
        catch (IllegalArgumentException expected) {
        }
    }
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    /**
     * Test using the inclusiveHostCount flag, which includes
     * the network and broadcast addresses in host counts
     */
    public void testCidrAddresses() {
        SubnetUtils utils = new SubnetUtils("192.168.0.1/8");
        utils.setInclusiveHostCount(true);
        SubnetInfo info = utils.getInfo();
        assertEquals("255.0.0.0",info.getNetmask());
        assertEquals(16777216, info.getAddressCount());

        utils = new SubnetUtils("192.168.0.1/9");
        utils.setInclusiveHostCount(true);
        info = utils.getInfo();
        assertEquals("255.128.0.0",info.getNetmask());
        assertEquals(8388608, info.getAddressCount());

        utils = new SubnetUtils("192.168.0.1/10");
        utils.setInclusiveHostCount(true);
        info = utils.getInfo();
        assertEquals("255.192.0.0",info.getNetmask());
        assertEquals(4194304, info.getAddressCount());

        utils = new SubnetUtils("192.168.0.1/11");
        utils.setInclusiveHostCount(true);
        info = utils.getInfo();
        assertEquals("255.224.0.0",info.getNetmask());
        assertEquals(2097152, info.getAddressCount());

        utils = new SubnetUtils("192.168.0.1/12");
        utils.setInclusiveHostCount(true);
        info = utils.getInfo();
        assertEquals("255.240.0.0",info.getNetmask());
        assertEquals(1048576, info.getAddressCount());

        utils = new SubnetUtils("192.168.0.1/13");
        utils.setInclusiveHostCount(true);
        info = utils.getInfo();
        assertEquals("255.248.0.0",info.getNetmask());
        assertEquals(524288, info.getAddressCount());

        utils = new SubnetUtils("192.168.0.1/14");
        utils.setInclusiveHostCount(true);
        info = utils.getInfo();
        assertEquals("255.252.0.0",info.getNetmask());
        assertEquals(262144, info.getAddressCount());

        utils = new SubnetUtils("192.168.0.1/15");
        utils.setInclusiveHostCount(true);
        info = utils.getInfo();
        assertEquals("255.254.0.0",info.getNetmask());
        assertEquals(131072, info.getAddressCount());

        utils = new SubnetUtils("192.168.0.1/16");
        utils.setInclusiveHostCount(true);
        info = utils.getInfo();
        assertEquals("255.255.0.0",info.getNetmask());
        assertEquals(65536, info.getAddressCount());

        utils = new SubnetUtils("192.168.0.1/17");
        utils.setInclusiveHostCount(true);
        info = utils.getInfo();
        assertEquals("255.255.128.0",info.getNetmask());
        assertEquals(32768, info.getAddressCount());

        utils = new SubnetUtils("192.168.0.1/18");
        utils.setInclusiveHostCount(true);
        info = utils.getInfo();
        assertEquals("255.255.192.0",info.getNetmask());
        assertEquals(16384, info.getAddressCount());

        utils = new SubnetUtils("192.168.0.1/19");
        utils.setInclusiveHostCount(true);
        info = utils.getInfo();
        assertEquals("255.255.224.0",info.getNetmask());
        assertEquals(8192, info.getAddressCount());

        utils = new SubnetUtils("192.168.0.1/20");
        utils.setInclusiveHostCount(true);
        info = utils.getInfo();
        assertEquals("255.255.240.0",info.getNetmask());
        assertEquals(4096, info.getAddressCount());

        utils = new SubnetUtils("192.168.0.1/21");
        utils.setInclusiveHostCount(true);
        info = utils.getInfo();
        assertEquals("255.255.248.0",info.getNetmask());
        assertEquals(2048, info.getAddressCount());

        utils = new SubnetUtils("192.168.0.1/22");
        utils.setInclusiveHostCount(true);
        info = utils.getInfo();
        assertEquals("255.255.252.0",info.getNetmask());
        assertEquals(1024, info.getAddressCount());

        utils = new SubnetUtils("192.168.0.1/23");
        utils.setInclusiveHostCount(true);
        info = utils.getInfo();
        assertEquals("255.255.254.0",info.getNetmask());
        assertEquals(512, info.getAddressCount());

        utils = new SubnetUtils("192.168.0.1/24");
        utils.setInclusiveHostCount(true);
        info = utils.getInfo();
        assertEquals("255.255.255.0",info.getNetmask());
        assertEquals(256, info.getAddressCount());

        utils = new SubnetUtils("192.168.0.1/25");
        utils.setInclusiveHostCount(true);
        info = utils.getInfo();
        assertEquals("255.255.255.128",info.getNetmask());
        assertEquals(128, info.getAddressCount());

        utils = new SubnetUtils("192.168.0.1/26");
        utils.setInclusiveHostCount(true);
        info = utils.getInfo();
        assertEquals("255.255.255.192",info.getNetmask());
        assertEquals(64, info.getAddressCount());

        utils = new SubnetUtils("192.168.0.1/27");
        utils.setInclusiveHostCount(true);
        info = utils.getInfo();
        assertEquals("255.255.255.224",info.getNetmask());
        assertEquals(32, info.getAddressCount());

        utils = new SubnetUtils("192.168.0.1/28");
        utils.setInclusiveHostCount(true);
        info = utils.getInfo();
        assertEquals("255.255.255.240",info.getNetmask());
        assertEquals(16, info.getAddressCount());

        utils = new SubnetUtils("192.168.0.1/29");
        utils.setInclusiveHostCount(true);
        info = utils.getInfo();
        assertEquals("255.255.255.248",info.getNetmask());
        assertEquals(8, info.getAddressCount());

        utils = new SubnetUtils("192.168.0.1/30");
        utils.setInclusiveHostCount(true);
        info = utils.getInfo();
        assertEquals("255.255.255.252",info.getNetmask());
        assertEquals(4, info.getAddressCount());

        utils = new SubnetUtils("192.168.0.1/31");
        utils.setInclusiveHostCount(true);
        info = utils.getInfo();
        assertEquals("255.255.255.254",info.getNetmask());
        assertEquals(2, info.getAddressCount());

        utils = new SubnetUtils("192.168.0.1/32");
        utils.setInclusiveHostCount(true);
        info = utils.getInfo();
        assertEquals("255.255.255.255",info.getNetmask());
        assertEquals(1, info.getAddressCount());

        new SubnetUtils("192.168.0.1/1");
    }
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