Java IP Address Get getIPList(String s, String s1)

Description

get IP List

License

Open Source License

Declaration

public static String[] getIPList(String s, String s1) 

Method Source Code

//package com.java2s;
import java.net.InetAddress;
import java.net.UnknownHostException;
import java.util.StringTokenizer;

public class Main {

    public static String[] getIPList(String s, String s1) {
        String[] as = null;//from w  ww  .  j av a  2 s.  c o m
        long l = getAddrLong("255.255.255.255");
        long l1 = getAddrLong(s1);
        if (l1 == l) {
            as = new String[1];
            as[0] = s;
            return as;
        }
        long l2 = getAddrLong(s);
        long l3 = l ^ l1;
        if (l1 == 0L || l2 == 0L || l1 > l || l3 > l) {
            return null;
        }
        if (l3 > 0x10000L) {
            l3 = 65025L;
        }
        if (l3 == 2L) {
            as = new String[1];
            as[0] = convertAddr(l2 + 1L);
            return as;
        }
        if ((l2 + l3) - 1L > l) {
            return null;
        }
        as = new String[(int) l3 - 1];
        for (int i = 0; (long) i < l3 - 1L; i++) {
            as[i] = convertAddr(l2 + 1L + (long) i);
        }
        return as;
    }

    public static long getAddrLong(String s) {
        int[] ai = getAddrArray(s);
        if (ai == null) {
            return 0L;
        }
        long l = 0L;
        for (int i = 0; i < 4; i++) {
            l |= (long) ai[i] << 8 * (3 - i);
        }
        return l;
    }

    public static String convertAddr(long l) {
        int[] ai = new int[4];
        for (int i = 0; i < 4; i++) {
            ai[i] = (int) (l >> 8 * (3 - i) & 255L);
        }
        return ai[0] + "." + ai[1] + "." + ai[2] + "." + ai[3];
    }

    public static int[] getAddrArray(String s) {
        if (s == null)
            return null;
        if (s.indexOf(":") != -1)
            return getIPV6AddrArray(s);
        StringTokenizer stringtokenizer = new StringTokenizer(s, ".");
        if (stringtokenizer.countTokens() != 4)
            return null;
        int[] ai = new int[4];
        try {
            for (int i = 0; i < 4; i++) {
                ai[i] = Integer.parseInt(stringtokenizer.nextToken());
            }
        } catch (NumberFormatException numberformatexception) {
            return null;
        }
        for (int j = 0; j < 4; j++) {
            if (ai[j] < 0 || ai[j] > 255)
                return null;
        }
        return ai;
    }

    private static int[] getIPV6AddrArray(String s) {
        try {
            InetAddress inetaddress = InetAddress.getByName(s);
            s = inetaddress.getHostAddress();
        } catch (UnknownHostException unknownhostexception) {
            System.err.println("unknown ipv6 exception");
        }
        StringTokenizer stringtokenizer = new StringTokenizer(s, ":");
        if (stringtokenizer.countTokens() != 8)
            return null;
        String[] as = new String[8];
        for (int i = 0; i < 8; i++) {
            as[i] = stringtokenizer.nextToken();
        }
        int[] ai = new int[16];
        int j = 0;
        for (int k = 0; k < as.length; k++) {
            for (int l = as[k].length(); l < 4; l++) {
                as[k] = "0" + as[k];
            }
            String s1 = as[k].substring(0, 2);
            String s2 = as[k].substring(2);
            try {
                ai[j++] = Integer.parseInt(s1, 16);
                ai[j++] = Integer.parseInt(s2, 16);
            } catch (NumberFormatException numberformatexception) {
                return null;
            }
        }
        for (int i1 = 0; i1 < 16; i1++) {
            if (ai[i1] < 0 || ai[i1] > 255)
                return null;
        }
        return ai;
    }
}

Related

1. getIPFromHash(final long ipHash)
2. getIPFromInterface(String ni)
3. getIPFromNetworkInterface()
4. getIpHostnameLocal()
5. getIPList(String address)
6. getIPs()
7. getIPs()
8. getIPv4Address()
9. getIPV4Address(List addresses)