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� �آSc @ s/ d Z d d l Z d d l Z d d l Z d d l Z e j d k rT d d l Z n d d l Z d d l Z d Z d Z d Z d Z d Z d e j j f d � � YZ d e j j f d � � YZ d e j j f d � � YZ d e j j f d � � YZ d e j j f d � � YZ d e j j f d � � YZ d e j j f d � � YZ d e j j f d � � YZ d e j j f d � � YZ i e d 6e d 6e d 6e d 6e d 6e d 6e d! 6e d" 6Z e d# � Z d$ � Z! d% e" f d& � � YZ# e# d' g � Z$ e# g � Z% e$ d( � Z& e$ d) � Z' d* � Z( d S(+ s� DNS Names. @var root: The DNS root name. @type root: dns.name.Name object @var empty: The empty DNS name. @type empty: dns.name.Name object i����Ni i i i i i t EmptyLabelc B s e Z d Z RS( s Raised if a label is empty.( t __name__t __module__t __doc__( ( ( s /usr/lib/python2.7/dns/name.pyR ) s t BadEscapec B s e Z d Z RS( s; Raised if an escaped code in a text format name is invalid.( R R R ( ( ( s /usr/lib/python2.7/dns/name.pyR - s t BadPointerc B s e Z d Z RS( sC Raised if a compression pointer points forward instead of backward.( R R R ( ( ( s /usr/lib/python2.7/dns/name.pyR 1 s t BadLabelTypec B s e Z d Z RS( s: Raised if the label type of a wire format name is unknown.( R R R ( ( ( s /usr/lib/python2.7/dns/name.pyR 5 s t NeedAbsoluteNameOrOriginc B s e Z d Z RS( s~ Raised if an attempt is made to convert a non-absolute name to wire when there is also a non-absolute (or missing) origin.( R R R ( ( ( s /usr/lib/python2.7/dns/name.pyR 9 s t NameTooLongc B s e Z d Z RS( s& Raised if a name is > 255 octets long.( R R R ( ( ( s /usr/lib/python2.7/dns/name.pyR > s t LabelTooLongc B s e Z d Z RS( s& Raised if a label is > 63 octets long.( R R R ( ( ( s /usr/lib/python2.7/dns/name.pyR B s t AbsoluteConcatenationc B s e Z d Z RS( sb Raised if an attempt is made to append anything other than the empty name to an absolute name.( R R R ( ( ( s /usr/lib/python2.7/dns/name.pyR F s t NoParentc B s e Z d Z RS( sV Raised if an attempt is made to get the parent of the root name or the empty name.( R R R ( ( ( s /usr/lib/python2.7/dns/name.pyR K s t "t (t )t .t ;s \t @t $c C s� d } x� | D]� } | t k r0 | d | 7} q t | � d k ra t | � d k ra | | 7} q | r� t | � d k r� | | 7} q | d t | � 7} q W| S( s� Escape the characters in label which need it. @param unicode_mode: escapify only special and whitespace (<= 0x20) characters @returns: the escaped string @rtype: stringt s \i i s \%03d( t _escapedt ord( t labelt unicode_modet textt c( ( s /usr/lib/python2.7/dns/name.pyt _escapify[ s $ c C s� t | � } d } d } d } xh | D]` } t | � } | | d 7} | d k rZ t � n | d k r{ | d k r{ | } n | d 7} q% W| d k r� t � n | d k r� | | d k r� t � n d S( si Check for empty labels in the middle of a label sequence, labels that are too long, and for too many labels. @raises NameTooLong: the name as a whole is too long @raises LabelTooLong: an individual label is too long @raises EmptyLabel: a label is empty (i.e. the root label) and appears in a position other than the end of the label sequencei i����i i? R i� N( t lenR R R ( t labelst lt totalt it jR t ll( ( s /usr/lib/python2.7/dns/name.pyt _validate_labelsn s t Namec B sa e Z d Z d g Z d � Z d � Z d � Z d � Z d � Z d � Z d � Z d � Z d � Z d � Z d � Z d � Z d � Z d � Z d � Z d � Z d � Z d � Z d � Z e d � Z e d � Z d$ d � Z d$ d$ d$ d � Z d � Z d � Z d � Z d � Z d � Z! d � Z" d � Z# d � Z$ d! � Z% d$ e& d" � Z' d# � Z( RS(% s� A DNS name. The dns.name.Name class represents a DNS name as a tuple of labels. Instances of the class are immutable. @ivar labels: The tuple of labels in the name. Each label is a string of up to 63 octets.R c C s0 t t | � j d t | � � t | j � d S( s� Initialize a domain name from a list of labels. @param labels: the labels @type labels: any iterable whose values are strings R N( t superR# t __setattr__t tupleR" R ( t selfR ( ( s /usr/lib/python2.7/dns/name.pyt __init__� s c C s t d � � d S( Ns+ object doesn't support attribute assignment( t TypeError( R' t namet value( ( s /usr/lib/python2.7/dns/name.pyR% � s c C s t | j � S( N( R# R ( R' ( ( s /usr/lib/python2.7/dns/name.pyt __copy__� s c C s t t j | j | � � S( N( R# t copyt deepcopyR ( R' t memo( ( s /usr/lib/python2.7/dns/name.pyt __deepcopy__� s c C s& t | j � d k o% | j d d k S( sX Is the most significant label of this name the root label? @rtype: bool i i����R ( R R ( R' ( ( s /usr/lib/python2.7/dns/name.pyt is_absolute� s c C s& t | j � d k o% | j d d k S( s\ Is this name wild? (I.e. Is the least significant label '*'?) @rtype: bool i t *( R R ( R' ( ( s /usr/lib/python2.7/dns/name.pyt is_wild� s c C sZ d } x@ | j D]5 } x, | D]$ } | | d >t | j � � 7} q Wq Wt | t j � S( sH Return a case-insensitive hash of the name. @rtype: int l i ( R R t lowert intt syst maxint( R' t hR R ( ( s /usr/lib/python2.7/dns/name.pyt __hash__� s &c C s� | j � } | j � } | | k rG | r7 t d d f St d d f Sn t | j � } t | j � } | | } | d k r� | } n | } d } d } t } x� | d k rd| d 8} | d 8} | d 8} | j | j � } | j | j � } | | k r#d } | d k rt } n | | | f S| | k rWd } | d k rJt } n | | | f S| d 7} q� W| } | d k r�t } n | d k r�t } n t } | | | f S( s� Compare two names, returning a 3-tuple (relation, order, nlabels). I{relation} describes the relation ship beween the names, and is one of: dns.name.NAMERELN_NONE, dns.name.NAMERELN_SUPERDOMAIN, dns.name.NAMERELN_SUBDOMAIN, dns.name.NAMERELN_EQUAL, or dns.name.NAMERELN_COMMONANCESTOR I{order} is < 0 if self < other, > 0 if self > other, and == 0 if self == other. A relative name is always less than an absolute name. If both names have the same relativity, then the DNSSEC order relation is used to order them. I{nlabels} is the number of significant labels that the two names have in common. i i i����( R1 t NAMERELN_NONER R R4 t NAMERELN_COMMONANCESTORt NAMERELN_SUPERDOMAINt NAMERELN_SUBDOMAINt NAMERELN_EQUAL( R' t othert sabst oabst l1t l2t ldiffR t ordert nlabelst namerelnt label1t label2( ( s /usr/lib/python2.7/dns/name.pyt fullcompare� sN c C s8 | j | � \ } } } | t k s0 | t k r4 t St S( so Is self a subdomain of other? The notion of subdomain includes equality. @rtype: bool ( RJ R= R> t Truet False( R' R? t nrt ot nl( ( s /usr/lib/python2.7/dns/name.pyt is_subdomain� s c C s8 | j | � \ } } } | t k s0 | t k r4 t St S( sq Is self a superdomain of other? The notion of subdomain includes equality. @rtype: bool ( RJ R< R> RK RL ( R' R? RM RN RO ( ( s /usr/lib/python2.7/dns/name.pyt is_superdomain s c C s& t g | j D] } | j � ^ q � S( s� Return a name which is equal to the current name, but is in DNSSEC canonical form. @rtype: dns.name.Name object ( R# R R4 ( R' t x( ( s /usr/lib/python2.7/dns/name.pyt canonicalize s c C s. t | t � r& | j | � d d k St Sd S( Ni i ( t isinstanceR# RJ RL ( R' R? ( ( s /usr/lib/python2.7/dns/name.pyt __eq__ s c C s. t | t � r& | j | � d d k St Sd S( Ni i ( RT R# RJ RK ( R' R? ( ( s /usr/lib/python2.7/dns/name.pyt __ne__ s c C s. t | t � r& | j | � d d k St Sd S( Ni i ( RT R# RJ t NotImplemented( R' R? ( ( s /usr/lib/python2.7/dns/name.pyt __lt__& s c C s. t | t � r& | j | � d d k St Sd S( Ni i ( RT R# RJ RW ( R' R? ( ( s /usr/lib/python2.7/dns/name.pyt __le__, s c C s. t | t � r& | j | � d d k St Sd S( Ni i ( RT R# RJ RW ( R' R? ( ( s /usr/lib/python2.7/dns/name.pyt __ge__2 s c C s. t | t � r& | j | � d d k St Sd S( Ni i ( RT R# RJ RW ( R' R? ( ( s /usr/lib/python2.7/dns/name.pyt __gt__8 s c C s d | j � d S( Ns <DNS name t >( t __str__( R' ( ( s /usr/lib/python2.7/dns/name.pyt __repr__> s c C s | j t � S( N( t to_textRL ( R' ( ( s /usr/lib/python2.7/dns/name.pyR] A s c C s� t | j � d k r d St | j � d k rE | j d d k rE d S| rg | j � rg | j d } n | j } d j t t | � � } | S( s� Convert name to text format. @param omit_final_dot: If True, don't emit the final dot (denoting the root label) for absolute names. The default is False. @rtype: string i R i R R i����( R R R1 t joint mapR ( R' t omit_final_dotR t s( ( s /usr/lib/python2.7/dns/name.pyR_ D s ( c C s� t | j � d k r d St | j � d k rE | j d d k rE d S| rg | j � rg | j d } n | j } d j g | D]! } t t j j | � t � ^ q} � } | S( s Convert name to Unicode text format. IDN ACE lables are converted to Unicode. @param omit_final_dot: If True, don't emit the final dot (denoting the root label) for absolute names. The default is False. @rtype: string i u @i R u .i����( R R R1 R` R t encodingst idnat ToUnicodeRK ( R' Rb R RR Rc ( ( s /usr/lib/python2.7/dns/name.pyt to_unicodeV s ( 7c C s� | j � sV | d k s% | j � r. t � n t | j � } | j t | j � � n | j } g | D]( } d t t | � � | j � f ^ qf } d j | � S( s Convert name to a format suitable for digesting in hashes. The name is canonicalized and converted to uncompressed wire format. @param origin: If the name is relative and origin is not None, then origin will be appended to it. @type origin: dns.name.Name object @raises NeedAbsoluteNameOrOrigin: All names in wire format are absolute. If self is a relative name, then an origin must be supplied; if it is missing, then this exception is raised @rtype: string s %s%sR N( R1 t NoneR t listR t extendt chrR R4 R` ( R' t originR RR t dlabels( ( s /usr/lib/python2.7/dns/name.pyt to_digestablek s 5c C s� | d k r! t j � } t } n t } | j � s} | d k sL | j � rU t � n t | j � } | j t | j � � n | j } d } x| D]� } t | | � } | d 7} | d k r� | j | � } n d } | d k rd | } t j d | � } | j | � Pq� | d k rVt | � d k rV| j � } | d k rV| | | <qVn t | � } | j t | � � | d k r� | j | � q� q� W| r�| j � Sd S( s� Convert name to wire format, possibly compressing it. @param file: the file where the name is emitted (typically a cStringIO file). If None, a string containing the wire name will be returned. @type file: file or None @param compress: The compression table. If None (the default) names will not be compressed. @type compress: dict @param origin: If the name is relative and origin is not None, then origin will be appended to it. @type origin: dns.name.Name object @raises NeedAbsoluteNameOrOrigin: All names in wire format are absolute. If self is a relative name, then an origin must be supplied; if it is missing, then this exception is raised i i i � s !Hi�? N( Rh t cStringIOt StringIORK RL R1 R Ri R Rj R# t gett structt packt writeR t tellRk t getvalue( R' t filet compressRl t want_returnR R R t nt posR+ Rc R ( ( s /usr/lib/python2.7/dns/name.pyt to_wire� s@ c C s t | j � S( s@ The length of the name (in labels). @rtype: int ( R R ( R' ( ( s /usr/lib/python2.7/dns/name.pyt __len__� s c C s | j | S( N( R ( R' t index( ( s /usr/lib/python2.7/dns/name.pyt __getitem__� s c C s | j | | !S( N( R ( R' t startt stop( ( s /usr/lib/python2.7/dns/name.pyt __getslice__� s c C s | j | � S( N( t concatenate( R' R? ( ( s /usr/lib/python2.7/dns/name.pyt __add__� s c C s | j | � S( N( t relativize( R' R? ( ( s /usr/lib/python2.7/dns/name.pyt __sub__� s c C s� t | j � } | d k r+ | t j j f S| | k rG t j j | f S| d k s_ | | k rn t d � � n t | | � t | | � f S( s( Split a name into a prefix and suffix at depth. @param depth: the number of labels in the suffix @type depth: int @raises ValueError: the depth was not >= 0 and <= the length of the name. @returns: the tuple (prefix, suffix) @rtype: tuple i s0 depth must be >= 0 and <= the length of the name( R R t dnsR* t emptyt ValueErrorR# ( R' t depthR ( ( s /usr/lib/python2.7/dns/name.pyt split� s c C sV | j � r' t | � d k r' t � n t | j � } | j t | j � � t | � S( s� Return a new name which is the concatenation of self and other. @rtype: dns.name.Name object @raises AbsoluteConcatenation: self is absolute and other is not the empty name i ( R1 R R Ri R Rj R# ( R' R? R ( ( s /usr/lib/python2.7/dns/name.pyR� � s c C s8 | d k r0 | j | � r0 t | t | � � S| Sd S( s� If self is a subdomain of origin, return a new name which is self relative to origin. Otherwise return self. @rtype: dns.name.Name object N( Rh RP R# R ( R' Rl ( ( s /usr/lib/python2.7/dns/name.pyR� � s c C s! | j � s | j | � S| Sd S( s� If self is a relative name, return a new name which is the concatenation of self and origin. Otherwise return self. @rtype: dns.name.Name object N( R1 R� ( R' Rl ( ( s /usr/lib/python2.7/dns/name.pyt derelativize� s c C s1 | r) | r | j | � S| j | � Sn | Sd S( s Return a name with the relativity desired by the caller. If origin is None, then self is returned. Otherwise, if relativize is true the name is relativized, and if relativize is false the name is derelativized. @rtype: dns.name.Name object N( R� R� ( R' Rl R� ( ( s /usr/lib/python2.7/dns/name.pyt choose_relativity s c C s2 | t k s | t k r! t � n t | j d � S( s� Return the parent of the name. @rtype: dns.name.Name object @raises NoParent: the name is either the root name or the empty name, and thus has no parent. i ( t rootR� R R# R ( R' ( ( s /usr/lib/python2.7/dns/name.pyt parent s N() R R R t __slots__R( R% R, R0 R1 R3 R9 RJ RP RQ RS RU RV RX RY RZ R[ R^ R] RL R_ Rg Rh Rn R| R} R R� R� R� R� R� R� R� RK R� R� ( ( ( s /usr/lib/python2.7/dns/name.pyR# � sH = 8 R c C s� t | t � s t d � � n | d k p6 t | t � sH t d � � n g } d } t } d } d } | d k r{ d } n | r;| d k r� t d g � SxQ| D]I} | rR| d k r� | j � r� t | � } | d 7} qO| | 7} t } q�| j � st � n | d 9} | t | � 7} | d 7} | d k r�t } | t | � 7} q�q� | d k s�| d k s�| d k s�| d k r�t | � d k r�t � n | j t j j | � � d } q� | d k r�t } d } d } q� | | 7} q� W| r�t � n t | � d k r+| j t j j | � � q;| j d � n t | � d k s]| d d k r�| d k r�| j t | j � � n t | � S( sx Convert unicode text into a Name object. Lables are encoded in IDN ACE form. @rtype: dns.name.Name object s0 input to from_unicode() must be a unicode strings origin must be a Name or Noneu i u @u .R i i i u 。u ．u ｡u \i����N( RT t unicodeR� Rh R# RL t isdigitR5 R Rk R R t appendRd Re t ToASCIIRK Rj Ri R ( R Rl R R t escapingt edigitsR R ( ( s /usr/lib/python2.7/dns/name.pyt from_unicode" sb .c C s{ t | t � sI t | t � r: t j d k r: t | | � St d � � n | d k pa t | t � ss t d � � n g } d } t } d } d } | d k r� d } n | r*| d k r� t d g � Sx!| D]} | r}| d k r | j � r t | � } | d 7} qz| | 7} t } q�| j � s1t � n | d 9} | t | � 7} | d 7} | d k r�t } | t | � 7} q�q� | d k r�t | � d k r�t � n | j | � d } q� | d k r�t } d } d } q� | | 7} q� W| r�t � n t | � d k r| j | � q*| j d � n t | � d k sL| d d k rq| d k rq| j t | j � � n t | � S( sF Convert text into a Name object. @rtype: dns.name.Name object i s% input to from_text() must be a strings origin must be a Name or NoneR i R R i i i s \i����N( RT t strR� R6 t hexversionR� R� Rh R# RL R� R5 R Rk R R R� RK Rj Ri R ( R Rl R R R� R� R R ( ( s /usr/lib/python2.7/dns/name.pyt from_text` sd .c C s� t | t � s t d � � n t j j | � } g } | } d } t | | � } | d 7} d } x| d k rf| d k r� | j | | | | !j � � | | 7} | d k r0| | 7} q0no | d k r*| d @d t | | � } | d k r| d 7} n | | k rt � n | } | d 7} n t � t | | � } | d 7} | d k re | d 7} qe qe W| j d � t | � | f S( s^ Convert possibly compressed wire format into a Name. @param message: the entire DNS message @type message: string @param current: the offset of the beginning of the name from the start of the message @type current: int @raises dns.name.BadPointer: a compression pointer did not point backwards in the message @raises dns.name.BadLabelType: an invalid label type was encountered. @returns: a tuple consisting of the name that was read and the number of bytes of the wire format message which were consumed reading it @rtype: (dns.name.Name object, int) tuple s* input to from_wire() must be a byte stringi i i@ i� i? i R ( RT R� R� R� t wiredatat maybe_wrapR R� t unwrapR R R# ( t messaget currentR t biggest_pointert hopst countt cused( ( s /usr/lib/python2.7/dns/name.pyt from_wire� s< () R Ro Rr R6 R- R� t encodings.idnaRd t dns.exceptionR� t dns.wiredataR: R< R= R> R; t exceptiont SyntaxErrorR R t FormErrorR R t DNSExceptionR R R R R RK R RL R R" t objectR# R� R� R� R� R� ( ( ( s /usr/lib/python2.7/dns/name.pyt <module> sP � � > =