c4ec26c4c0
These are - agenda item speakers, - motion submitters and supporters, - assignment candidates, - mediafile uploader and - chat message users but only if the user has respective permissions. Fixed #3002.
120 lines
4.0 KiB
Python
120 lines
4.0 KiB
Python
from django.contrib.auth.models import AnonymousUser
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from ..core.signals import user_data_required
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from ..utils.access_permissions import BaseAccessPermissions
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from ..utils.auth import anonymous_is_enabled, has_perm
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class UserAccessPermissions(BaseAccessPermissions):
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"""
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Access permissions container for User and UserViewSet.
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"""
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def check_permissions(self, user):
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"""
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Every user has read access for their model instnces.
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"""
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return True
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def get_serializer_class(self, user=None):
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"""
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Returns different serializer classes with respect user's permissions.
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"""
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from .serializers import UserFullSerializer
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return UserFullSerializer
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def get_restricted_data(self, full_data, user):
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"""
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Returns the restricted serialized data for the instance prepared
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for the user. Removes several fields for non admins so that they do
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not get the fields they should not get.
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"""
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from .serializers import USERCANSEESERIALIZER_FIELDS, USERCANSEEEXTRASERIALIZER_FIELDS
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NO_DATA = 0
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LITTLE_DATA = 1
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MANY_DATA = 2
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FULL_DATA = 3
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# Check user permissions.
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if has_perm(user, 'users.can_see_name'):
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if has_perm(user, 'users.can_see_extra_data'):
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if has_perm(user, 'users.can_manage'):
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case = FULL_DATA
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else:
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case = MANY_DATA
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else:
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case = LITTLE_DATA
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elif user is not None and user.id == full_data.get('id'):
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# An authenticated user without the permission to see users tries
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# to see himself.
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case = LITTLE_DATA
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else:
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# Now check if the user to be sent out is required by any app e. g.
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# as motion submitter or assignment candidate.
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receiver_responses = user_data_required.send(
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sender=self.__class__,
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request_user=user,
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user_data=full_data)
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for receiver, response in receiver_responses:
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if response:
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case = LITTLE_DATA
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break
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else:
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case = NO_DATA
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# Setup data.
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if case == FULL_DATA:
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data = full_data
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elif case == NO_DATA:
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data = None
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else:
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# case in (LITTLE_DATA, ḾANY_DATA)
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if case == MANY_DATA:
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fields = USERCANSEEEXTRASERIALIZER_FIELDS
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else:
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# case == LITTLE_DATA
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fields = USERCANSEESERIALIZER_FIELDS
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# Let only some fields pass this method.
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data = {}
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for base_key in fields:
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for key in (base_key, base_key + '_id'):
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if key in full_data.keys():
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data[key] = full_data[key]
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return data
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def get_projector_data(self, full_data):
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"""
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Returns the restricted serialized data for the instance prepared
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for the projector. Removes several fields.
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"""
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from .serializers import USERCANSEESERIALIZER_FIELDS
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# Let only some fields pass this method.
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data = {}
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for key in full_data.keys():
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if key in USERCANSEESERIALIZER_FIELDS:
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data[key] = full_data[key]
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return data
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class GroupAccessPermissions(BaseAccessPermissions):
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"""
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Access permissions container for Groups. Everyone can see them
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"""
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def check_permissions(self, user):
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"""
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Returns True if the user has read access model instances.
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"""
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# Every authenticated user can retrieve groups. Anonymous users can do
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# so if they are enabled.
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return not isinstance(user, AnonymousUser) or anonymous_is_enabled()
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def get_serializer_class(self, user=None):
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"""
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Returns serializer class.
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"""
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from .serializers import GroupSerializer
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return GroupSerializer
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