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https://gitlab2.federez.net/re2o/re2o
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Add customizable ACL-based permission
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commit
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3 changed files with 66 additions and 21 deletions
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@ -3,14 +3,69 @@ from re2o.acl import can_create, can_edit, can_delete, can_view_all
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from . import acl
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def can_see_api(_):
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def can_see_api(*_, **__):
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return lambda user: acl.can_view(user)
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class DefaultACLPermission(permissions.BasePermission):
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def _get_param_in_view(view, param_name):
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assert hasattr(view, 'get_'+param_name) \
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or getattr(view, param_name, None) is not None, (
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'cannot apply {} on a view that does not set '
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'`.{}` or have a `.get_{}()` method.'
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).format(self.__class__.__name__, param_name, param_name)
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if hasattr(view, 'get_'+param_name):
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param = getattr(view, 'get_'+param_name)()
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assert param is not None, (
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'{}.get_{}() returned None'
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).format(view.__class__.__name__, param_name)
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return param
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return getattr(view, param_name)
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class ACLPermission(permissions.BasePermission):
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"""
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Permission subclass for views that requires a specific model-based
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permission or don't define a queryset
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"""
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def get_required_permissions(self, method, view):
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"""
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Given a list of models and an HTTP method, return the list
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of acl functions that the user is required to verify.
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"""
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perms_map = _get_param_in_view(view, 'perms_map')
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if method not in perms_map:
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raise exceptions.MethodNotAllowed(method)
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return [can_see_api()] + list(perms_map[method])
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def has_permission(self, request, view):
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# Workaround to ensure ACLPermissions are not applied
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# to the root view when using DefaultRouter.
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if getattr(view, '_ignore_model_permissions', False):
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return True
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if not request.user or not request.user.is_authenticated:
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return False
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perms = self.get_required_permissions(request.method, view)
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return all(perm(request.user)[0] for perm in perms)
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def has_object_permission(self, request, view, obj):
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# Should never be called here but documentation
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# requires to implement this function
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return False
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class AutodetectACLPermission(permissions.BasePermission):
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"""
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Permission subclass in charge of checking the ACL to determine
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if a user can access the models
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if a user can access the models. Autodetect which ACL are required
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based on a queryset. Requires `.queryset` or `.get_queryset()`
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to be defined in the view.
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"""
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perms_map = {
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'GET': [can_see_api, lambda model: model.can_view_all],
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@ -46,29 +101,17 @@ class DefaultACLPermission(permissions.BasePermission):
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Given an object and an HTTP method, return the list of acl
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functions that the user is required to verify.
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"""
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if method not in self.perms_map:
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if method not in self.perms_obj_map:
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raise exceptions.MethodNotAllowed(method)
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return [perm(obj) for perm in self.perms_map[method]]
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return [perm(obj) for perm in self.perms_obj_map[method]]
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def _queryset(self, view):
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"""
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Return the queryset associated with view and raise an error
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is there is none.
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"""
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assert hasattr(view, 'get_queryset') \
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or getattr(view, 'queryset', None) is not None, (
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'Cannot apply {} on a view that does not set '
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'`.queryset` or have a `.get_queryset()` method.'
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).format(self.__class__.__name__)
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if hasattr(view, 'get_queryset'):
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queryset = view.get_queryset()
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assert queryset is not None, (
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'{}.get_queryset() returned None'.format(view.__class__.__name__)
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)
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return queryset
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return view.queryset
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return _get_param_in_view(view, 'queryset')
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def has_permission(self, request, view):
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# Workaround to ensure ACLPermissions are not applied
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@ -33,7 +33,7 @@ REST_FRAMEWORK = {
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'rest_framework.authentication.SessionAuthentication',
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),
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'DEFAULT_PERMISSION_CLASSES': (
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'api.permissions.DefaultACLPermission',
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'api.permissions.AutodetectACLPermission',
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),
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'DEFAULT_PAGINATION_CLASS': 'api.pagination.PageSizedPagination',
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'PAGE_SIZE': 100
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@ -43,6 +43,7 @@ from re2o.utils import all_active_interfaces, all_has_access
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from . import serializers
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from .pagination import PageSizedPagination
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from .permissions import ACLPermission
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# COTISATIONS APP
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@ -351,10 +352,11 @@ class DNSZonesView(generics.ListAPIView):
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class StandardMailingView(views.APIView):
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pagination_class = PageSizedPagination
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get_queryset = lambda self: all_has_access()
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permission_classes = (ACLPermission, )
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perms_map = {'GET' : [users.User.can_view_all]}
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def get(self, request, format=None):
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adherents_data = serializers.MailingMemberSerializer(self.get_queryset(), many=True).data
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adherents_data = serializers.MailingMemberSerializer(all_has_access(), many=True).data
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data = [{'name': 'adherents', 'members': adherents_data}]
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paginator = self.pagination_class()
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paginator.paginate_queryset(data, request)
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