com.theorem.tacacs.util
Class Util

Object
  Util

public final class Util

extends Object

TACACS++ utilities class.

Constructor Summary

Util()

Method Summary

static boolean	cmp(byte[] a, byte[] b) Compare two byte arrays.
static boolean	cmp(byte[] a, int startA, byte[] b, int startB, int length) Compare two byte arrays over a region.
static boolean	isPrintableASCII(byte[] b, int start, int length) Determine if a byte array is printable (eg ASCII-printable).
static String	toASCII(byte[] b) Convert a byte array to a string using ASCII encoding.
static byte[]	toASCII(String s) Convert a string to bytes encoded using ASCII, the TACACS+ protocol standard encoding.
static String	toHexString(byte[] buf) Convert a byte buffer to a hex string.
static String	toHexString(byte[] buf, int start, int length) Convert a byte buffer to a hex string.

Methods inherited from class Object

equals, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

Util

public Util()

Method Detail

toASCII

public static byte[] toASCII(String s)

Convert a string to bytes encoded using ASCII, the TACACS+ protocol standard encoding. In the event that US-ASCII is unavailable (highly unlikely) the encoding will be the platform's default encoding.

Parameters:

s - String to convert to a ASCII byte array.

Returns:

ASCII byte array.

toASCII

public static String toASCII(byte[] b)

Convert a byte array to a string using ASCII encoding. In the event that US-ASCII is unavailable (highly unlikely) the encoding will be the platform's default encoding.

Parameters:

b - Byte array to convert.

Returns:

String.

toHexString

public static String toHexString(byte[] buf)

Convert a byte buffer to a hex string.

Parameters:

buf - Byte array.

Returns:

Hexadecimal representation.

toHexString

public static String toHexString(byte[] buf,
                                 int start,
                                 int length)

Convert a byte buffer to a hex string.

Parameters:

buf - Byte array.

start - Start position in array.

length - Number of bytes to display.

Returns:

Hexadecimal representation.

cmp

public static boolean cmp(byte[] a,
                          byte[] b)

Compare two byte arrays.

Parameters:

a - array a

b - array b

Returns:

true if they're the same.

cmp

public static boolean cmp(byte[] a,
                          int startA,
                          byte[] b,
                          int startB,
                          int length)

Compare two byte arrays over a region.

Parameters:

a - Array A.

startA - The start position for comparing A.

b - Array B.

startB - The start position for comparing B.

length - Length of region.

Returns:

true if the comparison succeeded.

isPrintableASCII

public static boolean isPrintableASCII(byte[] b,
                                       int start,
                                       int length)

Determine if a byte array is printable (eg ASCII-printable).

Parameters:

b - Bytes to test.

start - start position.

length - Length to test.

Returns:

true if printable.