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https://gitlab2.federez.net/re2o/re2o
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51 lines
2 KiB
Python
51 lines
2 KiB
Python
# -*- mode: python; coding: utf-8 -*-
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# Re2o est un logiciel d'administration développé initiallement au rezometz. Il
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# se veut agnostique au réseau considéré, de manière à être installable en
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# quelques clics.
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#
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# Copyright © 2018 Maël Kervella
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#
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# This program is free software; you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation; either version 2 of the License, or
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# (at your option) any later version.
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License along
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# with this program; if not, write to the Free Software Foundation, Inc.,
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# 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
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"""Defines the authentication classes used in the API to authenticate a user.
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"""
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import datetime
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from django.conf import settings
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from django.utils.translation import ugettext_lazy as _
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from rest_framework import exceptions
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from rest_framework.authentication import TokenAuthentication
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class ExpiringTokenAuthentication(TokenAuthentication):
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"""Authenticate a user if the provided token is valid and not expired.
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"""
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def authenticate_credentials(self, key):
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"""See base class. Add the verification the token is not expired.
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"""
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base = super(ExpiringTokenAuthentication, self)
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user, token = base.authenticate_credentials(key)
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# Check that the genration time of the token is not too old
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token_duration = datetime.timedelta(
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seconds=settings.API_TOKEN_DURATION
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)
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utc_now = datetime.datetime.now(datetime.timezone.utc)
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if token.created < utc_now - token_duration:
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raise exceptions.AuthenticationFailed(_("The token has expired."))
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return token.user, token
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