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java.lang.Objectorg.glite.security.util.IPAddressComparator
public class IPAddressComparator
An utility class used to compare ip addresses and to check whether an IP address is within a address space defined by IP address - netmask combination.
Constructor Summary | |
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IPAddressComparator()
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Method Summary | |
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static byte[] |
andBytes(byte[] ip,
byte[] netmask)
This method does bitwise and between the two byte arrays. |
static boolean |
compare(byte[] item1,
byte[] item2)
Compares two byte arrays. |
static byte[][] |
concatArrayArrays(byte[][] first,
byte[][] second)
Concatenates two arrays of arrays bytes. |
static byte[] |
copyBytes(byte[] array,
int start,
int end)
Copies the items from the array to a new array starting from index start and ending at end - 1. |
static boolean |
isWithinAddressSpace(byte[] ipAddress,
byte[] ipAddressWithNetmask)
Tests whether the ipAddress is within the address space defined by the ipAddressWithNetmask. |
static byte[] |
parseIP(java.lang.String ip)
Parses the string representation of the IP address and returns the address as a byte array. |
Methods inherited from class java.lang.Object |
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equals, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
Constructor Detail |
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public IPAddressComparator()
Method Detail |
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public static byte[] parseIP(java.lang.String ip)
ip
- The IP address with optional netmask.
public static boolean compare(byte[] item1, byte[] item2)
item1
- The first array to use for comparison.item2
- The second array to use for comparison.
public static boolean isWithinAddressSpace(byte[] ipAddress, byte[] ipAddressWithNetmask)
ipAddress
- The IP address bytes to compare against the address space.ipAddressWithNetmask
- The 8 (IPv4) or 32 (IPv6) byte array containing in the first half the base IP address
bytes and in the second half the netmask bytes.
public static byte[] andBytes(byte[] ip, byte[] netmask)
ip
- The first array to use for the and operation.netmask
- The second array to use for the and operation.
public static byte[] copyBytes(byte[] array, int start, int end)
array
- The array holding the bytes to copy.start
- The index where to start copying, inclusive.end
- The index to stop copying, exclusive. The last item copied has index end - 1.
public static byte[][] concatArrayArrays(byte[][] first, byte[][] second)
first
- The array of arrays to begin with.second
- The array of arrays to end with.
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