umich.cac.util
Class Passwd

java.lang.Object
  umich.cac.util.Passwd

public class Passwd

extends java.lang.Object

A class that reads a UNIX style password file so we can obtain the UNIX uid for a given user for PBS accounting

Version:

$Header: /cvsroot/pbsaccounting/pbsaccounting/doc/javadoc/umich/cac/util/Passwd.html,v 1.6 2003/10/21 20:33:47 rodmach Exp $

Author:

rmach@umich.edu

Field Summary

long	NOT_FOUND If UID not found, the default value is NOT_FOUND

Constructor Summary

Passwd()
Constructor.

Passwd(java.lang.String passwdFile)
Constructor for unit testing

Method Summary

boolean	isExist(java.lang.String filename) Checks if passwd file exists
long	lookupUid(java.lang.String loginId) Lookup the UID for a user given the loginId

Methods inherited from class java.lang.Object

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

Field Detail

NOT_FOUND

public long NOT_FOUND

If UID not found, the default value is NOT_FOUND

Constructor Detail

Passwd

public Passwd(java.lang.String passwdFile)
       throws java.io.FileNotFoundException,
              java.io.IOException

Constructor for unit testing

Parameters:

passwdFile - an optional password file to use for lookups

Throws:

java.io.IOException - if problem reading password file

java.io.FileNotFoundException - if doesn't exist

Passwd

public Passwd()
       throws java.io.FileNotFoundException,
              java.io.IOException

Constructor. By default reads "/etc/passwd" file

Throws:

java.io.IOException - if problem reading password file

java.io.FileNotFoundException - if doesn't exist

Method Detail

isExist

public boolean isExist(java.lang.String filename)

Checks if passwd file exists

Parameters:

filename - passwd file to check for

Returns:

true if exists, false if not

lookupUid

public long lookupUid(java.lang.String loginId)

Lookup the UID for a user given the loginId

Parameters:

loginId - The login ID (entry 0 in the passwd file)

Returns:

The UID for the corresponding loginId, or NOT_FOUND if not found