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"""AbstractCardRequest class.
__author__ = "http://www.gemalto.com"
Copyright 2001-2010 gemalto
Author: Jean-Daniel Aussel, mailto:jean-daniel.aussel@gemalto.com
This file is part of pyscard.
pyscard is free software; you can redistribute it and/or modify
it under the terms of the GNU Lesser General Public License as published by
the Free Software Foundation; either version 2.1 of the License, or
(at your option) any later version.
pyscard is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public License
along with pyscard; if not, write to the Free Software
Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
"""
from smartcard.CardType import AnyCardType
from smartcard.PassThruCardService import PassThruCardService
import smartcard.System
class AbstractCardRequest:
"""The base class for xxxCardRequest classes.
A CardRequest is used for waitForCard() invocations and specifies what
kind of smart card an application is waited for.
Known subclasses: smartcard.pcsc.PCSCCardRequest"""
def __init__( self, newcardonly=False, readers=None, cardType=None, cardServiceClass=None, timeout=1 ):
"""Construct new CardRequest.
newcardonly: if True, request a new card; default is False, i.e. accepts cards already inserted
readers: the list of readers to consider for requesting a card; default is to consider all readers
cardType: the smartcard.CardType.CardType to wait for; default is smartcard.CardType.AnyCardType, i.e. the request will succeed with any card
cardServiceClass: the specific card service class to create and bind to the card;default is to create and bind a smartcard.PassThruCardService
timeout: the time in seconds we are ready to wait for connecting to the requested card.
default is to wait one second; to wait forever, set timeout to None
"""
self.newcardonly = newcardonly
self.readersAsked = readers
self.cardType = cardType
self.cardServiceClass = cardServiceClass
self.timeout = timeout
# if no CardType requeted, use AnyCardType
if None==self.cardType:
self.cardType=AnyCardType()
# if no card service requested, use pass-thru card service
if None==self.cardServiceClass:
self.cardServiceClass=PassThruCardService
def getReaders( self ):
"""Returns the list or readers on which to wait for cards."""
# if readers not given, use all readers
if None==self.readersAsked:
return smartcard.System.readers()
else:
return self.readersAsked
def waitforcard( self ):
"""Wait for card insertion and returns a card service."""
pass
def waitforcardevent( self ):
"""Wait for card insertion or removal."""
pass
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