o h@sdZddlZddlZddlmZmZddlZddlZe dZ de de fddZ e d Ze d Ze d Zdd ee e fdede fddZdZde defddZd ee e fde fddZdS)zIPv6 helper functions.N)ListUnionz 0+([0-9a-f]+)addressreturncCst|dkr tdt|}g}d}t|}||kr@|||d}t|}|dur3|d}|||d7}||ksd}d}d} d} t d D]!}||d krg| rf|} | | } | |krd| }| }d} qL| sm|} d } qL| r~d } | | } | |kr~| }| }|dkr|dkr|d ks|d kr|d dkr|d krd} nd} | t j |dd}|Sd |d|dd |||d}|Sd |}|S)zConvert an IPv6 address in binary form to text form. *address*, a ``bytes``, the IPv6 address in binary form. Raises ``ValueError`` if the address isn't 16 bytes long. Returns a ``str``. z IPv6 addresses are 16 bytes longrNF0TZffffz::z::ffff: :)len ValueErrorbinasciihexlifydecode _leading_zeromatchgroupappendrangednsipv4 inet_ntoajoin)rhexchunksilchunkmZ best_startZbest_lenstartZ last_was_zeroendZ current_lenprefixZthexr';/var/www/html/venv/lib/python3.10/site-packages/dns/ipv6.pyrsl        $  rs(.*):(\d+\.\d+\.\d+\.\d+)$s::.*s.*::$Ftext ignore_scopec Cs@t|ts |}n|}|r(|d}t|}|dkr |d}n|dkr(tjj|dkr0tjj|dr>|ds>tjj| drL| dsLtjj|dkrRd}t |}|durtj |d}|d d |dd |d d d |dd |d d }t |}|dur|d d}nt |}|dur|dd }|d}t|}|dkrtjjd}g} |D]=} | dkr|rtjjd}tdd|d D]} | dqqt| } | dkrtjj| dkrdd| | } | | q|dkr|stjjd| }zt|WStjtfytjjw)a+Convert an IPv6 address in text form to binary form. *text*, a ``str`` or ``bytes``, the IPv6 address in textual form. *ignore_scope*, a ``bool``. If ``True``, a scope will be ignored. If ``False``, the default, it is an error for a scope to be present. Returns a ``bytes``. %r:s::s0::Nrr02xr r FTs0000r0) isinstancebytesencodesplitrr exception SyntaxErrorendswith startswith _v4_endingrr inet_atonrr_colon_colon_start_colon_colon_endrrrr unhexlifyError TypeError) r)r*Zbtextpartsr!r#brZ seen_empty canonicalc_lcr'r'r(r;hst     <        r;s cCs |tS)zIs the specified address a mapped IPv4 address? *address*, a ``bytes`` is an IPv6 address in binary form. Returns a ``bool``. )r9_mapped_prefix)rr'r'r( is_mappeds rHcCstjtj|S)aVerify that *address* is a valid text form IPv6 address and return its canonical text form. Addresses with scopes are rejected. *text*, a ``str`` or ``bytes``, the IPv6 address in textual form. Raises ``dns.exception.SyntaxError`` if the text is not valid. )rZipv6rr;)r)r'r'r( canonicalizesrI)F)__doc__rretypingrrZ dns.exceptionrZdns.ipv4compilerr3strrr:r<r=boolr;rGrHrIr'r'r'r(s  E   [