[Product-Developers] PAS Plugin

[Ermanno Gnan]

Hi, I'm writing my first PAS plugin for Plone. I'm a little bit in  
trouble because I don't find a very simple tutorial from A to Z which  
explains me how to create it.
I understood only that I've to create 2 py files: one ontaining  
initialize informations and another one with py class which contains  
the implementations of interfaces.

Can somebody explain me better what PAS needs to run my  
implementation? I would like that it would be displayed on /acl_users/ 
plugins on the section Authentication Plugins.

Next I'll attach my sources which are my "bad" iplementation of PAS  
plugin. Is it some near my implementation or have I missed all?
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							My first file: SSLAuth.py
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##############################################################################
#
# Copyright (c) 2004 Zope Corporation and Contributors. All Rights
# Reserved.
#
# This software is subject to the provisions of the Zope Public License,
# Version 2.1 (ZPL).  A copy of the ZPL should accompany this
# distribution.
# THIS SOFTWARE IS PROVIDED "AS IS" AND ANY AND ALL EXPRESS OR IMPLIED
# WARRANTIES ARE DISCLAIMED, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
# WARRANTIES OF TITLE, MERCHANTABILITY, AGAINST INFRINGEMENT, AND  
FITNESS
# FOR A PARTICULAR PURPOSE.
##############################################################################
""" Class: SSLAuth

$Id: SSLAuth,v 1.0 2007/12/13 12:40:20 Ermanno Gnan $
"""

#Per funzionare come plugin PAS deve implementare le interfacce ed  
estendere un BasePlugin
from Products.PluggableAuthService.plugins.BasePlugin import BasePlugin
from Products.PluggableAuthService.interfaces.plugins import  
IAuthenticationPlugin #, IExtractionPlugin
from Products.PluggableAuthService.utils import classImplements
from App.class_init import default__class_init__ as InitializeClass

#costruttore del plugin
def manage_addSSLAuth( dispatcher, id='credentials_sslauth',  
title=None, REQUEST=None):
	"""
		Aggiunge il plugin a PAS
	"""
	#inizializza il plugin
	sp = SSLAuth( id, title )
	dispatcher._setObject( sp.getId(), sp)
	
	if REQUEST is not None:
		REQUEST['RESPONSE'].redirect( '%s/manage_workspace'
						'?manage_tabs_message='
						'SSLAuth+added.'
						% dispatcher.absolute_url() )

#classe che implementa le interfacce
class SSLAuth (BasePlugin):
	meta_type = 'SSLAuth'
	#__implements__ = (getattr(BasePlugin,'__implements__',()),)
	#implementazione dell'interfaccia IAuthenticationPlugin
	def authenticateCredentials(self, credentials):
		if credentials["login"]=="ermanno" and credentials["password"]=='':
			login="admin"
			password="gavroche"
			return(login, password)
		else:
			return(credentials["login"], credentials["password"])
classImplements(SSLAuth, IAuthenticationPlugin)
InitializeClass(SSLAuth)

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						__init__.py

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"""
	Installer del plugin
"""
#Carico la libreria per l'installer
from Products.PluggableAuthService.PluggableAuthService import  
registerMultiPlugin
from zLOG import LOG, INFO, ERROR, WARNING
from AccessControl.Permissions import add_user_folders
from SSLAuth import SSLAuth, manage_addSSLAuth

def initialize(context):
	registerMultiPlugin(SSLAuth.meta_type)
	context.registerClass( SSLAuth,
					permission=add_user_folders,
					constructors=(manage_addSSLAuth,
						manage_addSSLAuth),
					visibility=None)



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My Interface has an inplementation which is not coherent with my  
purposes.. it's Just a training one... :-)