­ ­ ­ ­ ­ ­ ­ ­ ­ ­ ­ ­ ­ ­ ­ ­ ­ ­ 3 ^@sdZddlZddlmZmZddlmZddlmZGdddZ Gdd d e Z Gd d d eZ Gd d d e Z Gddde Z Gddde ZGdddZdS)z SETools descriptors. These classes override how a class's attributes are get/set/deleted. This is how the @property decorator works. See https://docs.python.org/3/howto/descriptor.html for more details. N)ABCabstractmethod) defaultdict)WeakKeyDictionaryc@s,eZdZdZd ddZd ddZddZdS) CriteriaDescriptora Single item criteria descriptor. Keyword Parameters: name_regex The name of instance's regex setting attribute; used as name_regex below. If unset, regular expressions will never be used. lookup_function The name of the SELinuxPolicy lookup function, e.g. lookup_type or lookup_boolean. default_value The default value of the criteria. The default is None. enum_class The class of enumeration which supports a lookup class method. Read-only instance attribute use (obj parameter): policy The instance of SELinuxPolicy name_regex This attribute is read to determine if the criteria should be looked up or compiled into a regex. If the attribute does not exist, False is assumed. NcCsJ|s|s|std|o| s&td||_||_||_||_t|_dS)NzQA simple attribute should be used if there is no regex, lookup function, or enum.z9Lookup functions and enum classes are mutually exclusive.)AssertionErrorregex default_valuelookup_function enum_classr instances)selfZ name_regexr r r r#/usr/lib64/python3.6/descriptors.py__init__Cs zCriteriaDescriptor.__init__cCs|dkr |S|jj||jS)N)r setdefaultr )r objobjtyperrr__get__RszCriteriaDescriptor.__get__cCs|sd|j|<nn|jr6t||jdr6tj||j|<nH|jrZt|j|j}|||j|<n$|jrt|jj||j|<n ||j|<dS)NF) r rgetattrrecompiler policyr lookup)r rvaluerrrr__set__Xs zCriteriaDescriptor.__set__)NNNN)N)__name__ __module__ __qualname____doc__rrrrrrrr+s  rc@seZdZdZddZdS)CriteriaSetDescriptorz!Descriptor for a set of criteria.cs|sdj|<njr6t|jdr6tj|j|<ndjrht|jjtfdd|Dj|<n2jrtfdd|Dj|<nt|j|<dS)NFc3s|]}|VqdS)Nr).0v)rrr qsz0CriteriaSetDescriptor.__set__..c3s|]}jj|VqdS)N)r r)r!r")r rrr#ss) r rrrrr rsetr )r rrr)rr rrjs zCriteriaSetDescriptor.__set__N)rrrrrrrrrr fsr c@s:eZdZdZddZd ddZeddZed d ZdS) NetworkXGraphEdgeDescriptora' Descriptor abstract base class for NetworkX graph edge attributes. Parameter: name The edge property name Instance class attribute use (obj parameter): G The NetworkX graph source The edge's source node target The edge's target node cCs ||_dS)N)name)r propnamerrrrsz$NetworkXGraphEdgeDescriptor.__init__Nc CsH|dkr |Sy|j|j|j|jStk rBt|jYnXdS)N)Gsourcetargetr&KeyErrorAttributeError)r rrrrrrs z#NetworkXGraphEdgeDescriptor.__get__cCsdS)Nr)r rrrrrrsz#NetworkXGraphEdgeDescriptor.__set__cCsdS)Nr)r rrrr __delete__sz&NetworkXGraphEdgeDescriptor.__delete__)N) rrrrrrrrr-rrrrr%s   r%c@s eZdZdZddZddZdS) EdgeAttrDictz7A descriptor for edge attributes that are dictionaries.cCs:|dkr&tt|j|j|j|j<ntdj|jdS)Nz0{0} dictionaries should not be assigned directly)rlistr(r)r*r&r,format)r rrrrrrszEdgeAttrDict.__set__cCs |j|j|j|jjdS)N)r(r)r*r&clear)r rrrrr-szEdgeAttrDict.__delete__N)rrrrrr-rrrrr.sr.c@s eZdZdZddZddZdS)EdgeAttrIntMaxz A descriptor for edge attributes that are non-negative integers that always keep the max assigned value until re-initialized. cCs\|dkr"d|j|j|j|j<n6|j|j|j|j}t|||j|j|j|j<dS)Nr)r(r)r*r&max)r rrZ current_valuerrrrszEdgeAttrIntMax.__set__cCsd|j|j|j|j<dS)Nr)r(r)r*r&)r rrrrr-szEdgeAttrIntMax.__delete__N)rrrrrr-rrrrr2sr2c@s eZdZdZddZddZdS) EdgeAttrListz0A descriptor for edge attributes that are lists.cCs6|dkr"g|j|j|j|j<ntdj|jdS)Nz){0} lists should not be assigned directly)r(r)r*r& ValueErrorr0)r rrrrrrszEdgeAttrList.__set__cCs |j|j|j|jjdS)N)r(r)r*r&r1)r rrrrr-szEdgeAttrList.__delete__N)rrrrrr-rrrrr4sr4c@s2eZdZdZddZd ddZddZd d ZdS) PermissionMapDescriptoraN Descriptor for Permission Map mappings. Parameter: name The map setting name. validator A callable for validating the setting. Instance class attribute use (obj parameter): perm_map The full permission map. class_ The mapping's object class perm The mapping's permission cCs||_||_dS)N)r& validator)r r'r7rrrrsz PermissionMapDescriptor.__init__NcCs$|dkr |S|j|j|j|jS)N)perm_mapclass_permr&)r rrrrrrszPermissionMapDescriptor.__get__cCs"|j||j|j|j|j<dS)N)r7r8r9r:r&)r rrrrrrszPermissionMapDescriptor.__set__cCstdS)N)r,)r rrrrr-sz"PermissionMapDescriptor.__delete__)N)rrrrrrrr-rrrrr6s   r6)rrabcrr collectionsrweakrefrrr r%r.r2r4r6rrrrs  ;#