com.martiansoftware.nailgun.examples

Class Hash

java.lang.Object

com.martiansoftware.nailgun.examples.Hash

public class Hash
extends java.lang.Object

Hashes the client's stdin to the client's stdout in the form of a hexadecimal string. Command line requires one parameter: either the name of the algorithm to use (e.g., "MD5"), or "?" to request a list of available algorithms.

Field Summary

Fields

Modifier and Type	Field and Description
private static char[]	HEXCHARS

Constructor Summary

Constructors

Constructor and Description
Hash()

Method Summary

Modifier and Type	Method and Description
private static java.util.Set	getCryptoImpls(java.lang.String serviceType) Provides a list of algorithms for the specified service (which, for our purposes, is "MessageDigest".
static void	nailMain(NGContext context) Hashes client stdin, displays hash result to client stdout.

Methods inherited from class java.lang.Object

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

Field Detail

HEXCHARS

private static final char[] HEXCHARS

Constructor Detail

Hash

public Hash()

Method Detail

getCryptoImpls

private static java.util.Set getCryptoImpls(java.lang.String serviceType)

Provides a list of algorithms for the specified service (which, for our purposes, is "MessageDigest". This method was only very slightly adapted (to use a TreeSet) from the Java Almanac at http://javaalmanac.com/egs/java.security/ListServices.html

Parameters:

serviceType - The name of the service we're looking for. It's "MessageDigest"

nailMain

public static void nailMain(NGContext context)
                     throws java.security.NoSuchAlgorithmException,
                            java.io.IOException

Hashes client stdin, displays hash result to client stdout. Requires one command line parameter, either the name of the hash algorithm to use (e.g., "MD5") or "?" to request a list of available algorithms. Any exceptions become the problem of the user.

Throws:

java.security.NoSuchAlgorithmException

java.io.IOException