fr.ifremer.isisfish.util.ssh

Class SSHAgent

java.lang.Object

fr.ifremer.isisfish.util.ssh.SSHAgent

public class SSHAgent
extends Object

Isis SSH agent. This class centralize, ssh key and passphrase management. This is a singleton class.

Version:

$Revision$ Last update : $Date$ By : $Author$

Author:

chatellier

Field Summary

Fields

Modifier and Type	Field and Description
protected com.jcraft.jsch.JSch	jsch JSSch instance.
protected Map<String,char[]>	passphraseForKeys Passphrase associated to key file path.

Method Summary

Modifier and Type	Method and Description
protected char[]	askPassphrase(String privatekeyFile, String message) Ask for passphrase.
static SSHAgent	getAgent() Get agent instance.
char[]	getPassphrase(File privatekeyFile) Get passphrase for key.
char[]	getPassphrase(String privatekeyFile) Get passphrase for key.
protected static byte[]	toBytes(char[] chars) Transform char array to byte array without creating String instance.

Methods inherited from class java.lang.Object

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

Field Detail

jsch

protected com.jcraft.jsch.JSch jsch

JSSch instance.

passphraseForKeys

protected Map<String,char[]> passphraseForKeys

Passphrase associated to key file path. private key file path =< passphrase. Ensure that passphrase are valid before add into.

Method Detail

getAgent

public static SSHAgent getAgent()

Get agent instance.

Returns:

agent

getPassphrase

public char[] getPassphrase(File privatekeyFile)
                     throws InvalidPassphraseException

Get passphrase for key.

Parameters:

privatekeyFile - private key file

Returns:

null if there is no passphrase

Throws:

InvalidPassphraseException - if user cancel authentication

getPassphrase

public char[] getPassphrase(String privatekeyFile)
                     throws InvalidPassphraseException

Get passphrase for key.

Parameters:

privatekeyFile - private key file path

Returns:

null if there is no passphrase

Throws:

InvalidPassphraseException - if user cancel authentication

askPassphrase

protected char[] askPassphrase(String privatekeyFile,
                               String message)
                        throws InvalidPassphraseException

Ask for passphrase.

Parameters:

privatekeyFile - private key file path

message - message

Returns:

entrered passphrase

Throws:

InvalidPassphraseException - if user cancel authentication

toBytes

protected static byte[] toBytes(char[] chars)

Transform char array to byte array without creating String instance. see http://stackoverflow.com/a/9670279/2038100 for details

Parameters:

chars - char array

Returns:

byte array