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classes and algorithms for the generation of SELinux policy.
iÿÿÿÿN( t *i ( t refpolicy( t objectmodel( t access( t
interfaces( t matching( t utili i t PolicyGeneratorc B sŒ e Z d Z d d „ Z d d d „ Z e d „ Z e d „ Z d „ Z
d „ Z d d „ Z d „ Z
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„ Z d „ Z d „ Z d
„ Z RS( s¤ Generate a reference policy module from access vectors.
PolicyGenerator generates a new reference policy module
or updates an existing module based on requested access
in the form of access vectors.
It generates allow rules and optionally module require
statements and reference policy interfaces. By default
only allow rules are generated. The methods .set_gen_refpol
and .set_gen_requires turns on interface generation and
requires generation respectively.
PolicyGenerator can also optionally add comments explaining
why a particular access was allowed based on the audit
messages that generated the access. The access vectors
passed in must have the .audit_msgs field set correctly
and .explain set to SHORT|LONG_EXPLANATION to enable this
feature.
The module created by PolicyGenerator can be passed to
output.ModuleWriter to output a text representation.
c C s[ d | _ t | _ t | _ | r- | | _ n t j ƒ | _ t | _
d | _ d | _ d S( sø Initialize a PolicyGenerator with an optional
existing module.
If the module paramater is not None then access
will be added to the passed in module. Otherwise
a new reference policy module will be created.
N(
t Nonet ifgent NO_EXPLANATIONt explaint Falset gen_requirest moduelR t Modulet modulet dontauditt mislabledt domains( t selfR ( ( s8 /usr/lib64/python2.7/site-packages/sepolgen/policygen.pyt __init__D s c C s; | r$ t | | ƒ | _ t | _ n d | _ | j ƒ d S( s? Set whether reference policy interfaces are generated.
To turn on interface generation pass in an interface set
to use for interface generation. To turn off interface
generation pass in None.
If interface generation is enabled requires generation
will also be enabled.
N( t InterfaceGeneratorR t TrueR
R t" _PolicyGenerator__set_module_style( R t if_sett perm_maps( ( s8 /usr/lib64/python2.7/site-packages/sepolgen/policygen.pyt set_gen_refpolX s
c C s
| | _ d S( s& Set whether module requires are generated.
Passing in true will turn on requires generation and
False will disable generation. If requires generation is
disabled interface generation will also be disabled and
can only be re-enabled via .set_gen_refpol.
N( R
( R t status( ( s8 /usr/lib64/python2.7/site-packages/sepolgen/policygen.pyt set_gen_requiresj s c C s
| | _ d S( s) Set whether access is explained.
N( R ( R R ( ( s8 /usr/lib64/python2.7/site-packages/sepolgen/policygen.pyt set_gen_explaint s c C s
| | _ d S( N( R ( R R ( ( s8 /usr/lib64/python2.7/site-packages/sepolgen/policygen.pyt set_gen_dontaudity s c C s? | j r t } n t } x | j j ƒ D] } | | _ q( Wd S( N( R R R R t module_declarationsR ( R R t mod( ( s8 /usr/lib64/python2.7/site-packages/sepolgen/policygen.pyt __set_module_style| s
s 1.0c C s… d } x | j j ƒ D] } | } q W| sQ t j ƒ } | j j j d | ƒ n | | _ | | _ | j rx t
| _ n t | _ d S( s? Set the name of the module and optionally the version.
i N( R R R R t ModuleDeclarationt childrent insertt namet versionR R R ( R R& R' t mR! ( ( s8 /usr/lib64/python2.7/site-packages/sepolgen/policygen.pyt set_module_name„ s
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get_module• s c C sy d d l } yL | j | j d ƒ } | d j d ƒ d } | | j k rW | | _ d SWn t k
rk n Xd | _ d S( Niÿÿÿÿi i t :i ( t selinuxt matchpathcont obj_patht splitt tgt_typeR t OSErrorR ( R t avR, t contextR/ ( ( s8 /usr/lib64/python2.7/site-packages/sepolgen/policygen.pyt __restore_label s
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k rø| j t k rMd } n d } | j d d j | d
ƒ d j | d ƒ d j | d ƒ f 7_ | j d k rø| j d d j | d ƒ d j | j ƒ d j | ƒ d j | j ƒ f 7_ qøn | j | ƒ | j d k rZ| j t j
k rZ| j d d j | j ƒ d j | j ƒ f 7_ n | j t j
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7_ n | j t j k r¢| j d 7_ n | j t j k r#t | j ƒ d k r| j d d j g | j D] } | d ^ qム7_ q#| j d | j d d 7_ n | j t j k r›| j d 7_ | j d 7_ | j d | j d 7_ x+ | j d D] } | j d | 7_ q{Wn yf| j t j k r d | j k r d | j k sÝd | j k r | j st t d d ƒd d | _ n g }
xn g t t
g i | j! t" 6| j t# 6| j t$ 6ƒ D] } | t% ^ q@D]% } | | j k rT|
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ƒ f 7_ q n Wn n X| j' j( j& | ƒ q Wd S( Nt t verbosityi s$
#!!!! WARNING: '%s' is a base type.i t writet creates (/.*?)sU
#!!!! WARNING '%s' is not allowed to write or create to %s. Change the label to %s.i sG
#!!!! $ semanage fcontext -a -t %s %s%s
#!!!! $ restorecon -R -v %ssY
#!!!! The file '%s' is mislabeled on your system.
#!!!! Fix with $ restorecon -R -v %ss0
#!!!! This avc is allowed in the current policys:
#!!!! This avc has a dontaudit rule in the current policysH
#!!!! This avc can be allowed using one of the these booleans:
# %ss , s5
#!!!! This avc can be allowed using the boolean '%s'sŽ
#!!!! This avc is a constraint violation. You would need to modify the attributes of either the source or target types to allow this access.s
#Constraint rule: s
# s?
# Possible cause is the source %s and target %s are different.t dirt openR& t domaint typessL
#!!!! The source type '%s' can write to a '%s' of the following type:
# %s
sM
#!!!! The source type '%s' can write to a '%s' of the following types:
# %s
() R t AVRuleR t DONTAUDITt rule_typet commentR t strt Commentt explain_accesst base_file_typet typet audit2whyt ALLOWt joint permsR R R t obj_classR9 R. t _PolicyGenerator__restore_labelR t BOOLEANt lent datat
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!49! N.5c C sT | j r= | j j | | j ƒ \ } } | j j j | ƒ n | } | j | ƒ d S( sJ Add the access from the access vector set to this
module.
N( R t genR R R$ t extendt! _PolicyGenerator__add_allow_rules( R t av_sett raw_allowt ifcalls( ( s8 /usr/lib64/python2.7/site-packages/sepolgen/policygen.pyt
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N( t __name__t
__module__t __doc__R R R R R t SHORT_EXPLANATIONR R R R) R* RK Rf Rj Rm ( ( ( s8 /usr/lib64/python2.7/site-packages/sepolgen/policygen.pyR - s
J c sƒ g ‰ ‡ ‡ f d † } | t k rø xÇ | j D]¼ } ˆ j d | j ƒ ˆ j d t | j ƒ t | j ƒ f ƒ ˆ j d | j t j | j
ƒ f ƒ ˆ j d | j | j | j
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| j | j | j | j j ƒ f ƒ t | j ƒ d k ru| j d } ˆ j d | j | j | j
f ƒ n | ƒ n ˆ S( sª Explain why a policy statement was generated.
Return a string containing a text explanation of
why a policy statement was generated. The string is
commented and wrapped and can be directly inserted
into a policy.
Params:
av - access vector representing the access. Should
have .audit_msgs set appropriately.
verbosity - the amount of explanation provided. Should
be set to NO_EXPLANATION, SHORT_EXPLANATION, or
LONG_EXPLANATION.
Returns:
list of strings - strings explaining the access or an empty
string if verbosity=NO_EXPLANATION or there is not sufficient
information to provide an explanation.
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c S s t j ƒ } xa | j ƒ D]S } | j j | j ƒ | j j | j ƒ x$ | j D] } | j | | j ƒ qO Wq Wx8 | j
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