<s> from collections import defaultdict <EOL> from six import iteritems <EOL> from pyramid . interfaces import IAuthorizationPolicy <EOL> from pyramid . security import Authenticated , Everyone <EOL> from zope . interface import implementer <EOL> from daybed . backends import exceptions as backend_exceptions <EOL> from daybed import logger <EOL> PERMISSIONS_SET = set ( [ <EOL> '<STR_LIT>' , '<STR_LIT>' , <EOL> '<STR_LIT>' , '<STR_LIT>' , <EOL> '<STR_LIT>' , <EOL> '<STR_LIT>' , <EOL> '<STR_LIT>' , '<STR_LIT>' , '<STR_LIT>' , <EOL> '<STR_LIT>' , '<STR_LIT>' , '<STR_LIT>' <EOL> ] ) <EOL> def default_model_permissions ( credentials_id ) : <EOL> """<STR_LIT>""" <EOL> permissions = defaultdict ( list ) <EOL> for perm in PERMISSIONS_SET : <EOL> permissions [ perm ] . append ( credentials_id ) <EOL> if credentials_id == Everyone : <EOL> permissions . pop ( '<STR_LIT>' ) <EOL> return permissions <EOL> def merge_permissions ( original , specified ) : <EOL> """<STR_LIT>""" <EOL> permissions = dict_list2set ( original ) <EOL> def _add ( perm , identifier ) : <EOL> permissions . setdefault ( perm , set ( ) ) . add ( identifier ) <EOL> def _discard ( perm , identifier ) : <EOL> permissions . setdefault ( perm , set ( ) ) . discard ( identifier ) <EOL> for credentials_id , perms in iteritems ( specified ) : <EOL> if '<STR_LIT>' in [ perm . lower ( ) for perm in perms ] : <EOL> for perm in PERMISSIONS_SET : <EOL> _discard ( perm , credentials_id ) <EOL> elif '<STR_LIT:all>' in [ perm . lstrip ( '<STR_LIT:+>' ) . lower ( ) for perm in perms ] : <EOL> for perm in PERMISSIONS_SET : <EOL> _add ( perm , credentials_id ) <EOL> else : <EOL> for perm in [ perm . lower ( ) for perm in perms ] : <EOL> if perm . startswith ( '<STR_LIT:->' ) : <EOL> _discard ( perm . lstrip ( '<STR_LIT:->' ) , credentials_id ) <EOL> else : <EOL> _add ( perm . lstrip ( '<STR_LIT:+>' ) , credentials_id ) <EOL> return dict_set2list ( permissions ) <EOL> class Any ( list ) : <EOL> def matches ( self , permissions ) : <EOL> check = False <EOL> for perm in self : <EOL> if hasattr ( perm , '<STR_LIT>' ) : <EOL> check |= perm . matches ( permissions ) <EOL> else : <EOL> check |= perm in permissions <EOL> return check <EOL> class All ( list ) : <EOL> def matches ( self , permissions ) : <EOL> check = True <EOL> for perm in self : <EOL> if hasattr ( perm , '<STR_LIT>' ) : <EOL> check &= perm . matches ( permissions ) <EOL> else : <EOL> check &= perm in permissions <EOL> return check <EOL> AUTHORS_PERMISSIONS = set ( [ '<STR_LIT>' , '<STR_LIT>' , <EOL> '<STR_LIT>' ] ) <EOL> VIEWS_PERMISSIONS_REQUIRED = { <EOL> '<STR_LIT>' : All ( ) , <EOL> '<STR_LIT>' : All ( [ '<STR_LIT>' ] ) , <EOL> '<STR_LIT>' : All ( [ '<STR_LIT>' , '<STR_LIT>' , <EOL> Any ( [ '<STR_LIT>' , '<STR_LIT>' ] ) ] ) , <EOL> '<STR_LIT>' : All ( [ '<STR_LIT>' , '<STR_LIT>' , <EOL> '<STR_LIT>' , '<STR_LIT>' ] ) , <EOL> '<STR_LIT>' : All ( [ '<STR_LIT>' , '<STR_LIT>' ] ) , <EOL> '<STR_LIT>' : All ( [ '<STR_LIT>' ] ) , <EOL> '<STR_LIT>' : All ( [ '<STR_LIT>' ] ) , <EOL> '<STR_LIT>' : All ( [ '<STR_LIT>' ] ) , <EOL> '<STR_LIT>' : All ( [ '<STR_LIT>' ] ) , <EOL> '<STR_LIT>' : All ( [ '<STR_LIT>' ] ) , <EOL> '<STR_LIT>' : Any ( [ '<STR_LIT>' , '<STR_LIT>' ] ) , <EOL> '<STR_LIT>' : All ( [ '<STR_LIT>' ] ) , <EOL> '<STR_LIT>' : Any ( [ '<STR_LIT>' , '<STR_LIT>' ] ) , <EOL> '<STR_LIT>' : All ( [ '<STR_LIT>' , <EOL> Any ( [ '<STR_LIT>' , '<STR_LIT>' ] ) , <EOL> Any ( [ '<STR_LIT>' , '<STR_LIT>' ] ) ] ) , <EOL> '<STR_LIT>' : Any ( [ '<STR_LIT>' , '<STR_LIT>' ] ) , <EOL> '<STR_LIT>' : Any ( [ '<STR_LIT>' , '<STR_LIT>' ] ) , <EOL> '<STR_LIT>' : All ( [ '<STR_LIT>' ] ) , <EOL> '<STR_LIT>' : Any ( [ '<STR_LIT>' , '<STR_LIT>' ] ) , <EOL> '<STR_LIT>' : All ( [ '<STR_LIT>' ] ) , <EOL> } <EOL> @ implementer ( IAuthorizationPolicy ) <EOL> class DaybedAuthorizationPolicy ( object ) : <EOL> def __init__ ( self , model_creators = "<STR_LIT>" , token_creators = "<STR_LIT>" , <EOL> token_managers = None ) : <EOL> self . model_creators = self . _handle_pyramid_constants ( model_creators ) <EOL> self . token_creators = self . _handle_pyramid_constants ( token_creators ) <EOL> self . token_managers = self . _handle_pyramid_constants ( token_managers ) <EOL> def _handle_pyramid_constants ( self , creators ) : <EOL> if not creators : <EOL> return set ( ) <EOL> creators = set ( creators ) <EOL> if "<STR_LIT>" in creators : <EOL> creators . remove ( "<STR_LIT>" ) <EOL> creators . add ( Authenticated ) <EOL> if "<STR_LIT>" in creators : <EOL> creators . remove ( "<STR_LIT>" ) <EOL> creators . add ( Everyone ) <EOL> return creators <EOL> def permits ( self , context , principals , permission ) : <EOL> """<STR_LIT>""" <EOL> principals = set ( principals ) <EOL> permissions_required = VIEWS_PERMISSIONS_REQUIRED [ permission ] <EOL> current_permissions = set ( ) <EOL> if principals . intersection ( self . model_creators ) : <EOL> current_permissions . add ( "<STR_LIT>" ) <EOL> if principals . intersection ( self . token_creators ) : <EOL> current_permissions . add ( "<STR_LIT>" ) <EOL> if principals . intersection ( self . token_managers ) : <EOL> current_permissions . add ( "<STR_LIT>" ) <EOL> model_id = context . model_id <EOL> if model_id is not None : <EOL> try : <EOL> model_permissions = context . db . get_model_permissions ( model_id ) <EOL> except backend_exceptions . ModelNotFound : <EOL> model_permissions = { } <EOL> if permission != '<STR_LIT>' : <EOL> return True <EOL> finally : <EOL> for perm_name , credentials_ids in iteritems ( model_permissions ) : <EOL> if principals . intersection ( credentials_ids ) : <EOL> current_permissions . add ( perm_name ) <EOL> record_id = context . record_id <EOL> if record_id is not None : <EOL> try : <EOL> authors = context . db . get_record_authors ( model_id , record_id ) <EOL> except backend_exceptions . RecordNotFound : <EOL> authors = [ ] <EOL> finally : <EOL> if not principals . intersection ( authors ) : <EOL> current_permissions -= AUTHORS_PERMISSIONS <EOL> logger . debug ( "<STR_LIT>" , current_permissions ) <EOL> context . request . permissions = current_permissions <EOL> context . request . principals = principals <EOL> return permissions_required . matches ( current_permissions ) <EOL> def principals_allowed_by_permission ( self , context , permission ) : <EOL> raise NotImplementedError ( ) <EOL> class RootFactory ( object ) : <EOL> def __init__ ( self , request ) : <EOL> self . db = request . db <EOL> matchdict = request . matchdict or { } <EOL> self . model_id = matchdict . get ( '<STR_LIT>' ) <EOL> self . record_id = matchdict . get ( '<STR_LIT>' ) <EOL> self . request = request <EOL> def get_credentials ( request , credentials_id ) : <EOL> """<STR_LIT>""" <EOL> if credentials_id is Everyone : <EOL> return Everyone , None <EOL> try : <EOL> stored_key = request . db . get_credentials_key ( credentials_id ) <EOL> except backend_exceptions . CredentialsNotFound : <EOL> raise ValueError <EOL> return credentials_id , stored_key <EOL> def check_credentials ( credentials_id , credentials_key , request ) : <EOL> """<STR_LIT>""" <EOL> try : <EOL> _ , stored_key = get_credentials ( request , credentials_id ) <EOL> if stored_key == credentials_key : <EOL> return [ credentials_id ] <EOL> except ValueError : <EOL> pass <EOL> request . principals = [ Everyone ] <EOL> return [ ] <EOL> def dict_set2list ( dict_set ) : <EOL> return dict ( [ ( key , sorted ( value ) ) <EOL> for key , value in iteritems ( dict_set ) ] ) <EOL> def dict_list2set ( dict_list ) : <EOL> return dict ( [ ( key , set ( value ) ) <EOL> for key , value in iteritems ( dict_list ) ] ) <EOL> def invert_permissions_matrix ( permissions_credentials_ids ) : <EOL> """<STR_LIT>""" <EOL> credentials_ids_permissions = defaultdict ( set ) <EOL> for perm , credentials_ids in iteritems ( permissions_credentials_ids ) : <EOL> for credentials_id in credentials_ids : <EOL> credentials_ids_permissions [ credentials_id ] . add ( perm ) <EOL> return dict_set2list ( credentials_ids_permissions ) </s>
