dZddlZddlZddlZddlZddlmZmZm Z ejdZ dZ ejdZ ejdZejd Zd Zd Zd Zy) zIPv6 helper functions.N)xrange binary_type maybe_decodez 0+([0-9a-f]+)ct|dk7r tdtj|}g}d}t|}||krUt |||dz}t j |}||jd}|j||dz }||krUd}d}d} d} td D]'}||d k7r| s|} | | z } | |kDr| }| }d} !| r$|} d } )| rd } | | z } | |kDr| }| }|dkDry|dk(rC|d k(s |d k(r9|d dk(r1|d k(rd} nd} | tjj|ddz}|Sdj|d|dzdj|||zdz}|Sdj|}|S)zConvert an IPv6 address in binary form to text form. *address*, a ``binary``, the IPv6 address in binary form. Raises ``ValueError`` if the address isn't 16 bytes long. Returns a ``text``. z IPv6 addresses are 16 bytes longrNrF0Tffffz::z::ffff: :)len ValueErrorbinasciihexlifyr _leading_zeromatchgroupappendrdnsipv4 inet_ntoajoin)addresshexchunksilchunkm best_startbest_lenstart last_was_zeroend current_lenprefixs lib/third_party/dns/ipv6.pyrrs 7|r;<<   7 #C F A CA a%SQU^,    &yGGAJE e Q a%JH EM AY !9 !Ek )!&J*H % E MEk  !J"H!| ? M MfQi611}"388--gbcl;;C J ((6+:./$6((6*x"7"89:;C Jhhv Js(.*):(\d+\.\d+\.\d+\.\d+)$s::.*s.*::$ct|ts|j}|dk(rd}tj |}|t t jj|jd}dj|jdj|d|d|d|dj}tj |}||dd}ntj |}||dd }|jd }t|}|d kDrt j j"d }g}|D]}|d k(rG|rt j j"d}t%dd |z dzD]}|j'dOt|} | dkDrt j j"| dk7r dd| z z|z}|j'||d kr|st j j"d j)|} t+j,|S#t*j.t0f$rt j j"wxYw)zConvert an IPv6 address in text form to binary form. *text*, a ``text``, the IPv6 address in textual form. Returns a ``binary``. s::s0::Nz{}:{:02x}{:02x}:{:02x}{:02x}rrr :r Fr-Ts0000r 0) isinstancerencode _v4_endingr bytearrayrr inet_atonrformatdecode_colon_colon_start_colon_colon_endsplitr exception SyntaxErrorrrrr unhexlifyError TypeError) textr$br r" seen_empty canonicalcr!lcs r,r7r7ds  dK ({{} u} A 9 chh((4 5/66qwwqz7H7H7J78tQqT1Q478t=>Dfh    &A 9ABx  " "4 (y9DZZ F F A1umm'''JI  8mm///JAq1uqy)  )*QBAvmm///QwQV_)   Q  1uZmm''' 88I D (!!$'' NNI &(mm'''(s H 4Is c,|jtS)zIs the specified address a mapped IPv4 address? *address*, a ``binary`` is an IPv6 address in binary form. Returns a ``bool``. ) startswith_mapped_prefix)rs r, is_mappedrKs   n --r-)__doc__rer dns.exceptionrdns.ipv4_compatrrrcompilerrr5r:r;r7rJrKr-r,rSs|$ 66 +, AFRZZ6 7 RZZ)2::i(E(N,.r-