wcs/wcs/api_access.py

107 lines
3.6 KiB
Python

# w.c.s. - web application for online forms
# Copyright (C) 2005-2020 Entr'ouvert
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, see <http://www.gnu.org/licenses/>.
import xml.etree.ElementTree as ET
from quixote import get_publisher
from wcs.qommon.misc import xml_node_text
from wcs.qommon.storage import Equal, Or
from wcs.qommon.xml_storage import XmlStorableObject
class ApiAccess(XmlStorableObject):
_names = 'apiaccess'
xml_root_node = 'apiaccess'
name = None
access_identifier = None
access_key = None
description = None
restrict_to_anonymised_data = False
roles = None
# declarations for serialization
XML_NODES = [
('name', 'str'),
('description', 'str'),
('access_identifier', 'str'),
('access_key', 'str'),
('restrict_to_anonymised_data', 'bool'),
('roles', 'roles'),
]
@classmethod
def get_by_identifier(cls, access_identifier):
for api_access in cls.select():
if api_access.access_identifier == access_identifier:
return api_access
return None
@classmethod
def get_access_key(cls, access_identifier):
api_access = cls.get_by_identifier(access_identifier)
if api_access:
return api_access.access_key
return None
def get_roles(self):
return self.roles or []
def export_roles_to_xml(self, element, attribute_name, include_id=False, **kwargs):
for role in self.get_roles():
sub = ET.SubElement(element, 'role')
if include_id:
sub.attrib['role-id'] = role.id
sub.attrib['role-slug'] = role.slug
sub.text = role.name
def import_roles_from_xml(self, element, include_id=False, **kwargs):
criterias = []
for sub in element:
if include_id and 'role-id' in sub.attrib:
criterias.append(Equal('id', sub.attrib['role-id']))
elif 'role-slug' in sub.attrib:
criterias.append(Equal('slug', sub.attrib['role-slug']))
else:
role_name = xml_node_text(sub)
if role_name:
criterias.append(Equal('name', role_name))
return get_publisher().role_class.select([Or(criterias)], order_by='name')
def get_as_api_user(self):
class RestrictedApiUser:
# kept as inner class so cannot be pickled
id = Ellipsis # make sure it fails all over the place if used
is_admin = False
is_api_user = True
def can_go_in_backoffice(self):
return False
def get_roles(self):
return self.roles
user = RestrictedApiUser()
user.roles = [x.id for x in self.get_roles()]
return user
@classmethod
def get_with_credentials(cls, username, password):
api_access = cls.get_by_identifier(username)
if not api_access or api_access.access_key != password:
raise KeyError
return api_access.get_as_api_user()