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Classes for representing and manipulating interfaces.
i����Ni ( t access( t refpolicy( t objectmodel( t matching( t _t Paramc B sS e Z d Z d � Z d � Z d � Z e e e � Z e d d � � Z d � Z RS( s;
Object representing a paramater for an interface.
c C s1 d | _ t j | _ t j � | _ t | _ d S( Nt ( t _Param__nameR t SRC_TYPEt typet IdSett obj_classest Truet required( t self( ( s9 /usr/lib64/python2.7/site-packages/sepolgen/interfaces.pyt __init__& s c C s/ t j | � s" t d | � � n | | _ d S( Ns Name [%s] is not a param( R t
is_idparamt
ValueErrorR ( R t name( ( s9 /usr/lib64/python2.7/site-packages/sepolgen/interfaces.pyt set_name, s c C s | j S( N( R ( R ( ( s9 /usr/lib64/python2.7/site-packages/sepolgen/interfaces.pyt get_name1 s t fgetc C s t | j d � S( Ni ( t intR ( R ( ( s9 /usr/lib64/python2.7/site-packages/sepolgen/interfaces.pyt <lambda>6 s c C s* d | j t j | j d j | j � f S( Ns0 <sepolgen.policygen.Param instance [%s, %s, %s]>t ( R R t field_to_strR t joinR ( R ( ( s9 /usr/lib64/python2.7/site-packages/sepolgen/interfaces.pyt __repr__8 s (
t __name__t
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� } | | _ | | _ | | | j <| r'| j j | j � n | S( Ni i (
R R R t TGT_TYPEt obj_classt itertoolst chainR R t implicitly_typed_objectsR R t add( R R t avt paramst rett pt avobjst obj( ( s9 /usr/lib64/python2.7/site-packages/sepolgen/interfaces.pyt __param_insert> s0
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c C s d } t } t j | j � rK t | j t j | | � d k rK d } qK n t j | j � r� t | j t j | | � d k r� d } q� n t j | j � r� t | j t j
| | � d k r� d } q� n xA | j D]6 } t j | � r� t | t � d k r d } q q� q� W| S( sj Extract the paramaters from an access vector.
Extract the paramaters (in the form $N) from an access
vector, storing them as Param objects in a dictionary.
Some attempt is made at resolving conflicts with other
entries in the dict, but if an unresolvable conflict is
found it is reported to the caller.
The goal here is to figure out how interface paramaters are
actually used in the interface - e.g., that $1 is a domain used as
a SRC_TYPE. In general an interface will look like this:
interface(`foo', `
allow $1 foo : file read;
')
This is simple to figure out - $1 is a SRC_TYPE. A few interfaces
are more complex, for example:
interface(`foo_trans',`
domain_auto_trans($1,fingerd_exec_t,fingerd_t)
allow $1 fingerd_t:fd use;
allow fingerd_t $1:fd use;
allow fingerd_t $1:fifo_file rw_file_perms;
allow fingerd_t $1:process sigchld;
')
Here the usage seems ambigious, but it is not. $1 is still domain
and therefore should be returned as a SRC_TYPE.
Returns:
0 - success
1 - conflict found
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t src_typesR R t tgt_typesR! R R1 R R t dest_typeR- t DEST_TYPER9 ( t ruleR( R= R) ( ( R( s9 /usr/lib64/python2.7/site-packages/sepolgen/interfaces.pyt type_rule_extract_params� s c C sQ d } xD | j D]9 } t j | � r t | t j d | � rI d } qI q q W| S( Ni i ( t argsR R R- R R R9 ( t ifcallR( R) t arg( ( s9 /usr/lib64/python2.7/site-packages/sepolgen/interfaces.pyt ifcall_extract_params� s t AttributeVectorc B s e Z d � Z d � Z RS( c C s d | _ t j � | _ d S( NR ( R R t AccessVectorSet( R ( ( s9 /usr/lib64/python2.7/site-packages/sepolgen/interfaces.pyR � s c C s | j j | � d S( N( R t add_av( R R' ( ( s9 /usr/lib64/python2.7/site-packages/sepolgen/interfaces.pyRJ � s ( R R R RJ ( ( ( s9 /usr/lib64/python2.7/site-packages/sepolgen/interfaces.pyRH � s t AttributeSetc B s# e Z d � Z d � Z d � Z RS( c C s
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attributes( R ( ( s9 /usr/lib64/python2.7/site-packages/sepolgen/interfaces.pyR � s c C s | | j | j <d S( N( RL R ( R t attr( ( s9 /usr/lib64/python2.7/site-packages/sepolgen/interfaces.pyt add_attr� s c C s� d � } d } x� | D]y } | d } | d d k r[ | rL | j | � n | | � } q | r | j d � } t j | � } | j | � q q W| r� | j | � n d S( Nc S sb | d d !j � } t | � d k s5 | d d k rH t d | � � n t � } | d | _ | S( Ni i����i i t Attributes# Syntax error Attribute statement %s( t splitt lent SyntaxErrorRH R ( t linet fieldst a( ( s9 /usr/lib64/python2.7/site-packages/sepolgen/interfaces.pyt
parse_attr� s "
i����i t [t ,( R9 RN RP R t AccessVectorRJ ( R t fdRV RU RS t lR' ( ( s9 /usr/lib64/python2.7/site-packages/sepolgen/interfaces.pyt from_file� s
( R R R RN R\ ( ( ( s9 /usr/lib64/python2.7/site-packages/sepolgen/interfaces.pyRK � s t InterfaceVectorc B sG e Z d i d � Z i d � Z d � Z d � Z d � Z d � Z RS( c C sP t | _ d | _ t j � | _ i | _ | rC | j | | � n t | _ d S( NR ( R t enabledR R RI R( t from_interfaceR. t expanded( R t interfaceRL ( ( s9 /usr/lib64/python2.7/site-packages/sepolgen/interfaces.pyR � s c
C s� | j | _ xq | j � D]c } | j t j j k r: q n d | j k rO q n t j | � } x | D] } | j | � qe Wq W| rHx� | j � D]� } x� | j
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t |
| j � rUqUqUWx) | j � D] } t | | j � r�q�q�Wx) | j � D] } t | | j � r�q�q�Wd S( Nt dontaudit( R t avrulest rule_typeR t AVRulet ALLOWR t avrule_to_access_vectorsRJ t typeattributesRL t copyR/ R R0 t rolesR: R( t typerulesRC t interface_callsRG (
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c C s/ t | | j � d k r n | j j | � d S( Ni ( R6 R( R RJ ( R R' ( ( s9 /usr/lib64/python2.7/site-packages/sepolgen/interfaces.pyRJ 8 s c C sN g } | j d | j � x$ | j D] } | j t | � � q$ Wd j | � S( Ns [InterfaceVector %s]s
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c C s
| j � S( N( R ( R ( ( s9 /usr/lib64/python2.7/site-packages/sepolgen/interfaces.pyt __str__E s c C s d | j | j f S( Ns <InterfaceVector %s:%s>( R R^ ( R ( ( s9 /usr/lib64/python2.7/site-packages/sepolgen/interfaces.pyR H s N( R R R9 R R_ RJ Rt Ru R ( ( ( s9 /usr/lib64/python2.7/site-packages/sepolgen/interfaces.pyR] � s 4 t InterfaceSetc B s� e Z d d � Z d � Z d � Z d � Z d � Z d � Z i d � Z d i d � Z
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interfacest tgt_type_mapt tgt_type_allt output( R Rz ( ( s9 /usr/lib64/python2.7/site-packages/sepolgen/interfaces.pyR M s c C s$ | j r | j j | d � n d S( Ns
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RX s
( t sortedRw t valuesR{ R R( R R R R t to_listR ( R RZ t ivt paramt avlR' ( ( s9 /usr/lib64/python2.7/site-packages/sepolgen/interfaces.pyt to_fileW s %%(
c C s� d � } d } x� | D]y } | d } | d d k r[ | rL | j | � n | | � } q | r | j d � } t j | � } | j | � q q W| r� | j | � n | j � d S( Nc S s� | d d !j � } t | � d k s5 | d d k rH t d | � � n t � } | d | _ t | � d k rt d Sx� | d D]t } | j d � } t | � d k r� t d | � � n t � } | d | _ t j | d | _ | | j | j <q W| S( Ni i����i i R] s) Syntax error InterfaceVector statement %st :s- Invalid param in InterfaceVector statement %s(
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