/usr/lib64/python2.6/site-packages/sepolgen
Edit: /usr/lib64/python2.6/site-packages/sepolgen/matching.pyo (7486B)
Ñò
Ô<*Xc @ sg d Z d d k Z d d k Z d d k Z d d d „ ƒ YZ d d
d „ ƒ YZ d d d „ ƒ YZ d S( sI
Classes and algorithms for matching requested access to access vectors.
iÿÿÿÿNt Matchc B s e Z d d d „ Z d „ Z RS( i c C s | | _ | | _ t | _ d S( N( t interfacet distt Falset info_dir_change( t selfR R ( ( s7 /usr/lib64/python2.6/site-packages/sepolgen/matching.pyt __init__ s c C sk | i | i j o8 | i o | i o d Sd Sqg | i o d Sd Sn | i | i j o d Sd Sd S( Ni i iÿÿÿÿ( R R ( R t other( ( s7 /usr/lib64/python2.6/site-packages/sepolgen/matching.pyt __cmp__" s
N( t __name__t
__module__t NoneR R ( ( ( s7 /usr/lib64/python2.6/site-packages/sepolgen/matching.pyR s t MatchListc B sM e Z d Z d „ Z d „ Z d „ Z d „ Z d „ Z d „ Z d „ Z RS( i– c C s4 g | _ g | _ | i | _ t | _ d | _ d S( N( t childrent bastardst DEFAULT_THRESHOLDt thresholdR t allow_info_dir_changeR t av( R ( ( s7 /usr/lib64/python2.6/site-packages/sepolgen/matching.pyR 6 s
c C s< t | i ƒ o | i d St | i ƒ o | i d Sd S( Ni ( t lenR
R R ( R ( ( s7 /usr/lib64/python2.6/site-packages/sepolgen/matching.pyt best? s
c C s t | i ƒ t | i ƒ S( N( R R
R ( R ( ( s7 /usr/lib64/python2.6/site-packages/sepolgen/matching.pyt __len__F s c C s
t | i ƒ S( N( t iterR
( R ( ( s7 /usr/lib64/python2.6/site-packages/sepolgen/matching.pyt __iter__L s c C s t i | i | i ƒ S( N( t itertoolst chainR
R ( R ( ( s7 /usr/lib64/python2.6/site-packages/sepolgen/matching.pyt allO s c C sd | i | i j o= | i p
| i o | i i | ƒ q` | i i | ƒ n | i i | ƒ d S( N( R R R R R
t appendR ( R t match( ( s7 /usr/lib64/python2.6/site-packages/sepolgen/matching.pyR R s
c C s | i i ƒ | i i ƒ d S( N( R
t sortR ( R ( ( s7 /usr/lib64/python2.6/site-packages/sepolgen/matching.pyR [ s
(
R R
R R R R R R R R ( ( ( s7 /usr/lib64/python2.6/site-packages/sepolgen/matching.pyR 4 s t
AccessMatcherc B sA e Z d d „ Z d „ Z d „ Z d „ Z d „ Z d „ Z RS( c C sB d | _ d | _ | o
| | _ n t i ƒ | _ d | _ d S( Ni
id ( t type_penaltyt obj_penaltyt perm_mapst objectmodelt PermMappingst info_dir_penalty( R R! ( ( s7 /usr/lib64/python2.6/site-packages/sepolgen/matching.pyR a s
c C s. | | j p t i | ƒ o d S| i Sd S( Ni ( t accesst
is_idparamR ( R t at b( ( s7 /usr/lib64/python2.6/site-packages/sepolgen/matching.pyt
type_distancem s c C su | i i | i ƒ } t | ƒ d j o | i i | i | ƒ } | S| i i | i ƒ } | i i | i | ƒ Sd S( Ni ( t permst
differenceR R! t getdefault_distancet obj_class( R t av_reqt av_provt difft total( ( s7 /usr/lib64/python2.6/site-packages/sepolgen/matching.pyt
perm_distancet s c C s d } | | i | i | i ƒ 7} | | i | i | i ƒ 7} | i | i j o% t i | i ƒ o | | i 8} n | d j o | i i | i | i ƒ } n | i
| | ƒ } | d j o" | d j o | | S| | Sn0 | d j o" | d j o | | S| | Sn d S( s+ Determine the 'distance' between 2 access vectors.
This function is used to find an access vector that matches
a 'required' access. To do this we comput a signed numeric
value that indicates how close the req access is to the
'provided' access vector. The closer the value is to 0
the closer the match, with 0 being an exact match.
A value over 0 indicates that the prov access vector provides more
access than the req (in practice, this means that the source type,
target type, and object class is the same and the perms in prov is
a superset of those in req.
A value under 0 indicates that the prov access less - or unrelated
- access to the req access. A different type or object class will
result in a very low value.
The values other than 0 should only be interpreted relative to
one another - they have no exact meaning and are likely to
change.
Params:
req - [AccessVector] The access that is required. This is the
access being matched.
prov - [AccessVector] The access provided. This is the potential
match that is being evaluated for req.
Returns:
0 : Exact match between the acess vectors.
< 0 : The prov av does not provide all of the access in req.
A smaller value indicates that the access is further.
> 0 : The prov av provides more access than req. The larger
the value the more access over req.
i N( R) t src_typet tgt_typeR- R% R& R R! R, R* R2 ( R t reqt provR t pdist( ( s7 /usr/lib64/python2.6/site-packages/sepolgen/matching.pyt av_distance s ' '
c C se d } x“ | D]‹ } | i | | ƒ } | d j o
| } q
| d j o* | d j o | | 7} q˜ | | } q
| d j o | | 7} q
| | 8} q
W| i i | i | i ƒ } | i d j oF t i | _ x7 | D]+ } | i | i i | i | i ƒ B| _ qÚ Wn | t i @d j o@ | i t i @o/ | d j o | | i
8} qa| | i
7} n | S( s
i N( R R8 R! t getdefault_directionR- R* t info_dirR" t FLOW_NONEt
FLOW_WRITER$ ( R t av_setR R t xt tmpt av_dir( ( s7 /usr/lib64/python2.6/site-packages/sepolgen/matching.pyt av_set_matchÇ s2
'%
c C sœ | | _ x‚ t i | i | i i | i g ƒ ƒ D]Y } | i p q1 n | i | i | ƒ } | d j o t
| | ƒ } | i | ƒ q1 q1 W| i ƒ d S( Ni (
R R R t tgt_type_allt tgt_type_mapt getR4 t enabledRA R% R R R ( R t ifsetR t
match_listt ivR t m( ( s7 /usr/lib64/python2.6/site-packages/sepolgen/matching.pyt
search_ifsï s
N( R R
R R R) R2 R8 RA RJ ( ( ( s7 /usr/lib64/python2.6/site-packages/sepolgen/matching.pyR ` s H (( ( ( ( t __doc__R% R" R R R R ( ( ( s7 /usr/lib64/python2.6/site-packages/sepolgen/matching.pyt
s ,