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https://gitlab.federez.net/re2o/re2o
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80 lines
2.7 KiB
Python
80 lines
2.7 KiB
Python
# -*- mode: python; coding: utf-8 -*-
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# Re2o est un logiciel d'administration développé initiallement au Rézo Metz. 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 ACL for the whole API.
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Importing this module, creates the 'can view api' permission if not already
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done.
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"""
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from django.conf import settings
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from django.contrib.auth.models import Permission
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from django.contrib.contenttypes.models import ContentType
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from django.utils.translation import ugettext as _
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def _create_api_permission():
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"""Creates the 'use_api' permission if not created.
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The 'use_api' is a fake permission in the sense it is not associated with an
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existing model and this ensure the permission is created every time this file
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is imported.
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"""
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api_content_type, created = ContentType.objects.get_or_create(
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app_label=settings.API_CONTENT_TYPE_APP_LABEL,
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model=settings.API_CONTENT_TYPE_MODEL,
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)
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if created:
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api_content_type.save()
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api_permission, created = Permission.objects.get_or_create(
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name=settings.API_PERMISSION_NAME,
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content_type=api_content_type,
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codename=settings.API_PERMISSION_CODENAME,
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)
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if created:
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api_permission.save()
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_create_api_permission()
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def can_view(user, *args, **kwargs):
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"""Check if an user can view the application.
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Args:
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user: The user who wants to view the application.
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Returns:
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A couple (allowed, msg) where allowed is a boolean which is True if
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viewing is granted and msg is a message (can be None).
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"""
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kwargs = {
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"app_label": settings.API_CONTENT_TYPE_APP_LABEL,
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"codename": settings.API_PERMISSION_CODENAME,
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}
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permission = "%(app_label)s.%(codename)s" % kwargs
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can = user.has_perm(permission)
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return (
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can,
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None if can else _("You don't have the right to view this application."),
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(permission,),
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)
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