EVOLUTION-MANAGER
Edit File: objectmodel.cpython-36.pyc
3 Kl�fv � @ sp d Z ddddddddd g Zd Zd Zd ZeeB Zeeeed �ZedededediZG dd� d�ZG dd� d�Z dS )z� 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. Zsocket�fdZprocess�fileZlnk_fileZ fifo_fileZdbusZ capabilityZunix_stream_socket� � � )�n�r�w�br r r r c @ s e Zd ZdZdd� Zdd� ZdS )�PermMapa 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)�perm�dir�weight)�selfr r r � r �!/usr/lib/python3.6/objectmodel.py�__init__T s zPermMap.__init__c C s d| j t| j | jf S )Nz'<sepolgen.objectmodel.PermMap %s %s %d>)r � dir_to_strr r )r r r r �__repr__Y s zPermMap.__repr__N)�__name__� __module__� __qualname__�__doc__r r r r r r r M s r c @ s@ e Zd ZdZdd� Zdd� Zdd� Zdd � Zd d � Zd d � Z dS )� PermMappingsz�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 )N� )�classes�default_weight� FLOW_BOTH� default_dir)r r r r r d s zPermMappings.__init__c C s� d}x�|D ]�}|j � }t|�dks t|�dks |d dkr<q |d dkrx|d }|| jkrbtd��i | j|< | j| }q t|�dkr�td��|dkr�td ��t|d t|d t|d ��}|||j< q W dS ) zsRead the permission mappings from a file. This reads the format used by Apol in the setools suite. Nr r �#�classzduplicate class in perm map� z"error in object classs permissionszpermission outside of classr )�split�lenr � ValueErrorr � str_to_dir�intr )r r Zcur�lineZfields�c�pmr r r � from_filei s" $ zPermMappings.from_filec C s | j | | S )z�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 �objr r r r �get� s zPermMappings.getc C s8 y| j | | }W n tk r2 t|| j| j�S X |S )a 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 �KeyErrorr r r )r r* r r( r r r � getdefault� s zPermMappings.getdefaultc C s, t }x"|D ]}| j||�}||jB }q W |S )N)� FLOW_NONEr- r )r r* �permsr r r( r r r �getdefault_direction� s z!PermMappings.getdefault_directionc C s, d}x"|D ]}| j ||�}||j7 }q W |S )Nr )r- r )r r* r/ Ztotalr r( r r r �getdefault_distance� s z PermMappings.getdefault_distanceN) r r r r r r) r+ r- r0 r1 r r r r r ^ s r N) r Zimplicitly_typed_objectsr. Z FLOW_READZ FLOW_WRITEr r$ r r r r r r r �<module> s