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from django.contrib.auth.models import User
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from cashonly.core.models import Account
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from cashonly.core.services import AccountManager
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class UsernameCardnumberPinBackend(object):
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def authenticate(self, username=None, card_number=None, pin=None):
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if username is not None and card_number is not None:
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raise ValueError('username and card_number are mutually exclusive')
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if username is None and card_number is None:
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raise ValueError('either username and card_number is required')
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try:
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if username is not None:
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user = User.objects.get(username=username)
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account = user.account
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elif card_number is not None:
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account = Account.objects.get(card_number=card_number)
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except User.DoesNotExist:
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return None
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except Account.DoesNotExist:
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return None
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accmgr = AccountManager(account)
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if accmgr.check_pin(pin):
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return account.user
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return None
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def get_user(self, user_id):
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try:
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return User.objects.get(pk=user_id)
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except User.DoesNotExist:
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return None
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