47 lines
1.4 KiB
Python
47 lines
1.4 KiB
Python
from django.utils import timezone
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from django.utils.translation import gettext_lazy as _
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from rest_framework import exceptions
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from rest_framework.authentication import TokenAuthentication as DRFTokenAuthentication
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from .models import AuthToken, get_default_expiry
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AUTO_REFRESH = True
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MIN_REFRESH_INTERVAL = 60
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class TokenAuthentication(DRFTokenAuthentication):
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keyword = 'Token'
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model = AuthToken
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def authenticate_credentials(self, key):
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msg = _('Invalid token.')
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model = self.get_model()
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try:
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token = model.objects.select_related('user').get(key=key)
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except model.DoesNotExist:
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raise exceptions.AuthenticationFailed(msg)
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if not token.user.is_active:
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raise exceptions.AuthenticationFailed(_('User inactive or deleted.'))
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if token.expiry is not None:
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if token.expiry < timezone.now():
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token.delete()
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raise exceptions.AuthenticationFailed(msg)
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if AUTO_REFRESH:
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self.renew_token(token)
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return (token.user, token)
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def renew_token(self, auth_token):
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current_expiry = auth_token.expiry
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new_expiry = get_default_expiry()
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# Throttle refreshing of token to avoid db writes
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delta = (new_expiry - current_expiry).total_seconds()
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if delta > MIN_REFRESH_INTERVAL:
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auth_token.expiry = new_expiry
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auth_token.save(update_fields=('expiry',))
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