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� ��^c @ s� d Z d d d d d d d d d g Z d Z d Z d Z e e BZ i e d 6e d 6e d 6e d 6Z i d e 6d e 6d e 6d e 6Z d d d � � YZ d d d � � YZ d S( s� This module provides knowledge object classes and permissions. It should be used to keep this knowledge from leaking into the more generic parts of the policy generation. t sockett fdt processt filet lnk_filet fifo_filet dbust capabilityt unix_stream_socketi i i t nt rt wt bt PermMapc B s e Z d Z d � Z d � Z RS( s A mapping between a permission and its information flow properties. PermMap represents the information flow properties of a single permission including the direction (read, write, etc.) and an abstract representation of the bandwidth of the flow (weight). c C s | | _ | | _ | | _ d S( N( t permt dirt weight( t selfR R R ( ( s: /usr/lib64/python2.7/site-packages/sepolgen/objectmodel.pyt __init__T s c C s d | j t | j | j f S( Ns' <sepolgen.objectmodel.PermMap %s %s %d>( R t dir_to_strR R ( R ( ( s: /usr/lib64/python2.7/site-packages/sepolgen/objectmodel.pyt __repr__Y s ( t __name__t __module__t __doc__R R ( ( ( s: /usr/lib64/python2.7/site-packages/sepolgen/objectmodel.pyR M s t PermMappingsc B sD e Z d Z d � Z d � Z d � Z d � Z d � Z d � Z RS( s� The information flow properties of a set of object classes and permissions. PermMappings maps one or more classes and permissions to their PermMap objects describing their information flow charecteristics. c C s i | _ d | _ t | _ d S( Ni ( t classest default_weightt FLOW_BOTHt default_dir( R ( ( s: /usr/lib64/python2.7/site-packages/sepolgen/objectmodel.pyR d s c C s' d } x| D]} | j � } t | � d k s t | � d k s | d d k rY q n | d d k r� | d } | | j k r� t d � � n i | j | <| j | } q t | � d k r� t d � � n | d k r� t d � � n t | d t | d t | d � � } | | | j <q Wd S( ss Read the permission mappings from a file. This reads the format used by Apol in the setools suite. i i t #t classs duplicate class in perm mapi s" error in object classs permissionss permission outside of classi N( t Nonet splitt lenR t ValueErrorR t str_to_dirt intR ( R R t curt linet fieldst ct pm( ( s: /usr/lib64/python2.7/site-packages/sepolgen/objectmodel.pyt from_filei s" 4 (c C s | j | | S( s� Get the permission map for the object permission. Returns: PermMap representing the permission Raises: KeyError if the object or permission is not defined ( R ( R t objR ( ( s: /usr/lib64/python2.7/site-packages/sepolgen/objectmodel.pyt get� s c C s@ y | j | | } Wn$ t k r; t | | j | j � SX| S( s Get the permission map for the object permission or a default. getdefault is the same as get except that a default PermMap is returned if the object class or permission is not defined. The default is FLOW_BOTH with a weight of 5. ( R t KeyErrorR R R ( R R+ R R) ( ( s: /usr/lib64/python2.7/site-packages/sepolgen/objectmodel.pyt getdefault� s c C s: t } x- | D]% } | j | | � } | | j B} q W| S( N( t FLOW_NONER. R ( R R+ t permsR R R) ( ( s: /usr/lib64/python2.7/site-packages/sepolgen/objectmodel.pyt getdefault_direction� s c C s: d } x- | D]% } | j | | � } | | j 7} q W| S( Ni ( R. R ( R R+ R0 t totalR R) ( ( s: /usr/lib64/python2.7/site-packages/sepolgen/objectmodel.pyt getdefault_distance� s ( R R R R R* R, R. R1 R3 ( ( ( s: /usr/lib64/python2.7/site-packages/sepolgen/objectmodel.pyR ^ s N( ( ( R t implicitly_typed_objectsR/ t FLOW_READt FLOW_WRITER R# R R R ( ( ( s: /usr/lib64/python2.7/site-packages/sepolgen/objectmodel.pyt <module> s ""