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� ��^c @ s d Z d d l Z d d l Z d d l j Z y d d l TWn n Xd d l m Z d d l m Z d d l m Z d d l m Z d d l m Z d d l m Z d Z d Z d Z d d d � � YZ d e d � Z d � Z d d d � � YZ d � Z d S( s> classes and algorithms for the generation of SELinux policy. i����N( t *i ( t refpolicy( t objectmodel( t access( t interfaces( t matching( t utili i t PolicyGeneratorc B s� 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 d � 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 � | _ t | _ d | _ d | _ d S( s� 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 | | � | _ t | _ n d | _ | j � 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 � 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 � D] } | } q W| sQ t j � } | j j j d | � 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 c C s | j r t | j � n | j S( N( R R ( R ( ( s8 /usr/lib64/python2.7/site-packages/sepolgen/policygen.pyt get_module� s c C sy d d l } yL | j | j d � } | d j d � d } | | j k rW | | _ d SWn t k rk n Xd | _ d S( Ni����i 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 c C s& x | D]} t j | � } | j r4 | j | _ n d | _ | j rp t t j t | d | j �� � | _ n | j � } | d d k r� | j t j k r� | j d d j | d � 7_ n x9 | j D]. } | d k s� | d k r� t } Pq� t } q� W| d d k r�| d d k r�| r�| j t j k r�| j t k rMd } n d } | j d d j | d � d j | d � d j | d � f 7_ | j d k r�| j d d j | d � d j | j � d j | � d j | j � f 7_ q�n | j | � | j d k rZ| j t j k rZ| j d d j | j � d j | j � f 7_ n | j t j k r~| j d 7_ n | j t j k r�| j d 7_ n | j t j k r#t | j � d k r| j d d j g | j D] } | d ^ q�� 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 s�d | j k r | j st t d d �d d | _ n g } xn g t t g i | j! t" 6| j t# 6| j t$ 6� D] } | t% ^ q@D]% } | | j k rT| j& | � qTqTWt | � d k r�| j d | j! | j d j | � f 7_ q t | � d k r | j d | j! | j d j | � f 7_ q n Wn n X| j' j( j& | � 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's� #!!!! 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 CONSTRAINTt TERULER t seinfot ATTRIBUTEt sesearcht src_typet SCONTEXTt CLASSt PERMSt TCONTEXTt appendR R$ ( R t avsR2 t rulet base_typet permt permissiont compt xt reasonR< t i( ( s8 /usr/lib64/python2.7/site-packages/sepolgen/policygen.pyt __add_allow_rules� sr * "# CS !49! N.5c C sT | j r= | j j | | j � \ } } | j j j | � n | } | j | � 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 add_access� s c C s( x! | D] } | j j j | � q Wd S( N( R R$ RY ( R t role_type_sett role_type( ( s8 /usr/lib64/python2.7/site-packages/sepolgen/policygen.pyt add_role_types s 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 s� g � � � f d � } | t k r� x� | j D]� } � j d | j � � j d t | j � t | j � f � � j d | j t j | j � f � � j d | j | j | j f � � j t j d | j d d d d d d �� q. W| � n� | r� j d | j | j | j | j j � f � t | j � d k ru| j d } � j d | j | j | j f � n | � n � S( s� 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. c sg � s d S� j d � xI � j � D]; } t | j � j � } � j d | j � | j f � q$ Wd S( Ns Interface options:s %s # [%d]( RY t allt call_interfacet interfaceR2 t to_stringt dist( t matcht ifcall( t mlt s( s8 /usr/lib64/python2.7/site-packages/sepolgen/policygen.pyt explain_interfaces s s %ss scontext="%s" tcontext="%s"s class="%s" perms="%s"s comm="%s" exe="%s" path="%s"s message="t "iP t initial_indents t subsequent_indents s) src="%s" tgt="%s" class="%s", perms="%s"i s comm="%s" exe="%s" path="%s"( t LONG_EXPLANATIONt audit_msgsRY t headerRA t scontextt tcontextt tclassR t list_to_space_strt accessest commt exet pathRe t textwrapt wrapt messageRT R0 RJ RI t to_space_strRM ( R2 Ry R6 R{ t msg( ( Ry Rz s8 /usr/lib64/python2.7/site-packages/sepolgen/policygen.pyRC s* #& & & c C s g } g } | j | j j � � | j d d � d t � t j � } | j | _ x� t t | � � D]� } | | j t j k r� | j j | j � qf | | j t j k r� | j j | j � qf | | j t j k r� | j j | j � qf | | j GHqf W| S( Nt keyc S s | j S( N( t num( t param( ( s8 /usr/lib64/python2.7/site-packages/sepolgen/policygen.pyt <lambda>E s t reverse( Re t paramst valuest sortR R t InterfaceCallR& t ifnamet rangeRM RE t SRC_TYPEt argsRY RT t TGT_TYPER0 t OBJ_CLASSRJ ( Rt R2 R� R� Rx Rb ( ( s8 /usr/lib64/python2.7/site-packages/sepolgen/policygen.pyRs @ s R c B s/ e Z d d � Z d � Z d � Z d � Z RS( c C s5 | | _ | j | � t j | � | _ g | _ d S( N( t ifst hack_check_ifsR t AccessMatchert matchert calls( R R� R ( ( s8 /usr/lib64/python2.7/site-packages/sepolgen/policygen.pyR Z s c C s� x� | j j � D]� } g } | j | j j � � | j d d � d t � xp t t | � � D]\ } | d | | j k r� t | _ Pn | | j t j t j t j g k r^ t | _ Pq^ q^ Wq Wd S( NR� c S s | j S( N( R� ( R� ( ( s8 /usr/lib64/python2.7/site-packages/sepolgen/policygen.pyR� h s R� i ( R R� Re R� R� R R� RM R� R t enabledRE R R� R� R� ( R R� R` R� Rb ( ( s8 /usr/lib64/python2.7/site-packages/sepolgen/policygen.pyR� ` s c C s | j | � } g } xi | j D]^ } t | j � j | j � } | rj t j t | j | | � � | _ n | j | | f � q Wg } x� | D]y \ } } t } xN | D]F } | j | � r� | j r� | j r� | j j | j � n t } q� q� W| s� | j | � q� q� W| | f S( N( Rw R� Rs t bestRt R2 R RB RC R@ RY R t matchest mergeR ( R RZ R6 t raw_avRi Ry Rx t dR� t foundt o_ifcall( ( s8 /usr/lib64/python2.7/site-packages/sepolgen/policygen.pyRd w s$ $ c C sl g } x_ | D]W } t j � } | j j | j | | � t | � rW | j j | � q | j | � q W| S( N( R t MatchListR� t search_ifsR� RM R� RY ( R RZ R� R2 t ans( ( s8 /usr/lib64/python2.7/site-packages/sepolgen/policygen.pyRw � s N( Rn Ro R R R� Rd Rw ( ( ( s8 /usr/lib64/python2.7/site-packages/sepolgen/policygen.pyR Y s c C s. d � } x | j � D] } | | � q Wd S( s* Add require statements to the module. c S s t j � } xa | j � D]S } | j j | j � | j j | j � x$ | j D] } | j | | j � qO Wq Wx8 | j � D]* } x! | j D] } | j j | � q� Wq} Wx: | j � D], } | j j | j � | j j | j � q� W| j j d � | j j d | � d S( NR i ( R t Requiret avrulesR< t updatet src_typest tgt_typest obj_classest add_obj_classRI t interface_callsR� t addt role_typest rolest rolet discardR$ R% ( t nodet rt avrulet objRx t argRl ( ( s8 /usr/lib64/python2.7/site-packages/sepolgen/policygen.pyt collect_requires� s N( t nodes( R R� R� ( ( s8 /usr/lib64/python2.7/site-packages/sepolgen/policygen.pyR � s ( ( ( Rp t itertoolsR� t selinux.audit2whyRF t setoolsR5 R R R R R R R Rq R R R RC Rs R R ( ( ( s8 /usr/lib64/python2.7/site-packages/sepolgen/policygen.pyt <module> s* �7 B