59 lines
2.1 KiB
Python
59 lines
2.1 KiB
Python
# -*- coding: utf-8 -*-
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# Copyright (C) 2014-2017 Andrey Antukh <niwi@niwi.nz>
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# Copyright (C) 2014-2017 Jesús Espino <jespinog@gmail.com>
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# Copyright (C) 2014-2017 David Barragán <bameda@dbarragan.com>
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# Copyright (C) 2014-2017 Alejandro Alonso <alejandro.alonso@kaleidos.net>
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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 Affero General Public License as
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# published by the Free Software Foundation, either version 3 of the
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# License, or (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 Affero General Public License for more details.
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#
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# You should have received a copy of the GNU Affero General Public License
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# along with this program. If not, see <http://www.gnu.org/licenses/>.
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from django.contrib.auth import get_user_model
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from taiga.base import exceptions as exc
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from django.apps import apps
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from django.core import signing
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from django.utils.translation import ugettext as _
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def get_token_for_user(user, scope):
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"""
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Generate a new signed token containing
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a specified user limited for a scope (identified as a string).
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"""
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data = {"user_%s_id" % (scope): user.id}
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return signing.dumps(data)
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def get_user_for_token(token, scope, max_age=None):
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"""
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Given a selfcontained token and a scope try to parse and
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unsign it.
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If max_age is specified it checks token expiration.
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If token passes a validation, returns
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a user instance corresponding with user_id stored
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in the incoming token.
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"""
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try:
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data = signing.loads(token, max_age=max_age)
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except signing.BadSignature:
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raise exc.NotAuthenticated(_("Invalid token"))
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model_cls = get_user_model()
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try:
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user = model_cls.objects.get(pk=data["user_%s_id" % (scope)])
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except (model_cls.DoesNotExist, KeyError):
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raise exc.NotAuthenticated(_("Invalid token"))
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else:
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return user
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