3 (h@sjddlZddlmZddlmZddlmZdedfddZd d Z d d Z d dZ ddZ ddZ dS)N)ValidationError)range) ugettext_lazyFz!This is not a valid IPv6 address.c Cs.d }d}d }d}t|s$t|ddt|}t|}|rHt|}|rH|S|jd}x|tt|D]l} d|| kr|| jd|| <|| sd|| <|| dkr|d7}|d kr| }||kr|}|}q`d}d }q`W|dkr||} | t|kr|dg7}dg||| <|dkrdg|}dj |} | j S) aU Cleans an IPv6 address string. Validity is checked by calling is_valid_ipv6_address() - if an invalid address is passed, ValidationError is raised. Replaces the longest continuous zero-sequence with "::" and removes leading zeroes and makes sure all hextets are lowercase. Args: ip_str: A valid IPv6 address. unpack_ipv4: if an IPv4-mapped address is found, return the plain IPv4 address (default=False). error_message: An error message used in the ValidationError. Returns: A compressed IPv6 address, or the same value rinvalid)code:.0r r r ) is_valid_ipv6_addressr_explode_shorthand_ip_string_sanitize_ipv4_mapping _unpack_ipv4splitrlenlstripjoinlower) ip_strZ unpack_ipv4 error_messagebest_doublecolon_startbest_doublecolon_lendoublecolon_startdoublecolon_lenZ ipv4_unpackedhextetsindexbest_doublecolon_endresultr 5/tmp/pip-install-q3hcpn_q/Django/django/utils/ipv6.pyclean_ipv6_address sJ         r"cCs|jjds|S|jd}d|d kr,|Sdt|dddd t|ddd d t|d ddd t|d dd d f}dj|dd}|d|7}|S) a? Sanitize IPv4 mapping in an expanded IPv6 address. This converts ::ffff:0a0a:0a0a to ::ffff:10.10.10.10. If there is nothing to sanitize, returns an unchanged string. Args: ip_str: A string, the expanded IPv6 address. Returns: The sanitized output string, if applicable. z0000:0000:0000:0000:0000:ffff:rr rz %d.%d.%d.%drr )r startswithrintr)rr ipv4_addressrr r r!r]s   rcCs"|jjdsdS|jdddS)ag Unpack an IPv4 address that was mapped in a compressed IPv6 address. This converts 0000:0000:0000:0000:0000:ffff:10.10.10.10 to 10.10.10.10. If there is nothing to sanitize, returns None. Args: ip_str: A string, the expanded IPv6 address. Returns: The unpacked IPv4 address, or None if there was nothing to unpack. z0000:0000:0000:0000:0000:ffff:Nrr)rr(rsplit)rr r r!rs rc Csdddlm}tjd}|j|s$dSd|kr0dS|jddkrBdSd|krNdS|jdrd|jd sz|jdr~|jd r~dS|jdd krdSd|kr|jdd kr|jd d krdSt|}x|j dD]}|jd d kr|j dd|ksdSy ||Wnt k rdSXqy(t |d dks>t |d d krBdSWqt k rZdSXqWdS)z Ensure we have a valid IPv6 address. Args: ip_str: A string, the IPv6 address. Returns: A boolean, True if this is a valid IPv6 address. r)validate_ipv4_addressz^[0-9a-fA-F:.]+$Frz::rz:::r'r r%iTr ) Zdjango.core.validatorsr,recompilematchcountr(endswithrrrr) ValueError)rr,Z symbols_rehextetr r r!r sB      r cCst|s |Sg}|jd}d|jdd kr2d}nd}t|dkrt|djdt|djd}|djd}xt||D]}|jdqW||djd7}n |jd}g}x*|D]"}|jd d t||jqWdj|S) z Expand a shortened IPv6 address. Args: ip_str: A string, the IPv6 address. Returns: A string, the expanded IPv6 address. z::r rrr'rZ0000r r&r )_is_shorthand_iprrrappendrr)rZnew_ipr4Zfill_tosep__Zret_ipr r r!rs$   $  "rcCs2|jddkrdStdd|jdDr.dSdS)zDetermine if the address is shortened. Args: ip_str: A string, the IPv6 address. Returns: A boolean, True if the address is shortened. z::rTcss|]}t|dkVqdS)r&N)r).0xr r r! sz#_is_shorthand_ip..rF)r1anyr)rr r r!r6s r6)r.Zdjango.core.exceptionsrZdjango.utils.six.movesrZdjango.utils.translationr_r"rrr rr6r r r r!s   Q%D,