Adds IS_IPV6() validator using Google ipaddr.py library
ipaddr.py library rev/3144 has been approved as a standard python library for python3. IS_IPV4() was not modified to use the library.
This commit is contained in:
Kurt Grutzmacher
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@@ -49,6 +49,7 @@ __all__ = [
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'IS_IN_SET',
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'IS_INT_IN_RANGE',
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'IS_IPV4',
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'IS_IPV6',
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'IS_LENGTH',
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'IS_LIST_OF',
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'IS_LOWER',
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@@ -3387,6 +3388,147 @@ class IS_IPV4(Validator):
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return (value, None)
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return (value, translate(self.error_message))
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class IS_IPV6(Validator):
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"""
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Checks if field's value is an IP version 6 address. First attempts to
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use the ipaddress library and falls back to contrib/ipaddr.py from Google
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(https://code.google.com/p/ipaddr-py/)
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Arguments:
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is_private: None (default): indifferent
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True (enforce): address must be in fc00::/7 range
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False (forbid): address must NOT be in fc00::/7 range
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is_link_local: Same as above but uses fe80::/10 range
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is_reserved: Same as above but uses IETF reserved range
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is_mulicast: Same as above but uses ff00::/8 range
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is_routeable: Similar to above but enforces not private, link_local,
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reserved or multicast
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is_6to4: Same as above but uses 2002::/16 range
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is_teredo: Same as above but uses 2001::/32 range
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subnets: value must be a member of at least one from list of subnets
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Examples:
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#Check for valid IPv6 address:
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INPUT(_type='text', _name='name', requires=IS_IPV6())
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#Check for valid IPv6 address is a link_local address:
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INPUT(_type='text', _name='name', requires=IS_IPV6(is_link_local=True))
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#Check for valid IPv6 address that is Internet routeable:
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INPUT(_type='text', _name='name', requires=IS_IPV6(is_routeable=True))
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#Check for valid IPv6 address in specified subnet:
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INPUT(_type='text', _name='name', requires=IS_IPV6(subnets=['2001::/32'])
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>>> IS_IPV6()('fe80::126c:8ffa:fe22:b3af')
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('fe80::126c:8ffa:fe22:b3af', None)
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>>> IS_IPV6()('192.168.1.1')
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('192.168.1.1', 'enter valid IPv6 address')
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>>> IS_IPV6(error_message='bad ip')('192.168.1.1')
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('192.168.1.1', 'bad ip')
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>>> IS_IPV6(is_link_local=True)('fe80::126c:8ffa:fe22:b3af')
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('fe80::126c:8ffa:fe22:b3af', None)
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>>> IS_IPV6(is_link_local=False)('fe80::126c:8ffa:fe22:b3af')
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('fe80::126c:8ffa:fe22:b3af', 'enter valid IPv6 address')
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>>> IS_IPV6(is_link_local=True)('2001::126c:8ffa:fe22:b3af')
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('2001::126c:8ffa:fe22:b3af', 'enter valid IPv6 address')
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>>> IS_IPV6(is_multicast=True)('2001::126c:8ffa:fe22:b3af')
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('2001::126c:8ffa:fe22:b3af', 'enter valid IPv6 address')
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>>> IS_IPV6(is_multicast=True)('ff00::126c:8ffa:fe22:b3af')
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('ff00::126c:8ffa:fe22:b3af', None)
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>>> IS_IPV6(is_routeable=True)('2001::126c:8ffa:fe22:b3af')
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('2001::126c:8ffa:fe22:b3af', None)
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>>> IS_IPV6(is_routeable=True)('ff00::126c:8ffa:fe22:b3af')
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('ff00::126c:8ffa:fe22:b3af', 'enter valid IPv6 address')
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>>> IS_IPV6(subnets='2001::/32')('2001::8ffa:fe22:b3af')
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('2001::8ffa:fe22:b3af', None)
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>>> IS_IPV6(subnets='fb00::/8')('2001::8ffa:fe22:b3af')
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('2001::8ffa:fe22:b3af', 'enter valid IPv6 address')
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>>> IS_IPV6(subnets=['fc00::/8','2001::/32'])('2001::8ffa:fe22:b3af')
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('2001::8ffa:fe22:b3af', None)
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>>> IS_IPV6(subnets='invalidsubnet')('2001::8ffa:fe22:b3af')
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('2001::8ffa:fe22:b3af', 'invalid subnet provided')
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"""
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def __init__(
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self,
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is_private=None,
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is_link_local=None,
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is_reserved=None,
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is_multicast=None,
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is_routeable=None,
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is_6to4=None,
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is_teredo=None,
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subnets=None,
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error_message='enter valid IPv6 address'):
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self.is_private = is_private
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self.is_link_local = is_link_local
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self.is_reserved = is_reserved
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self.is_multicast = is_multicast
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self.is_routeable = is_routeable
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self.is_6to4 = is_6to4
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self.is_teredo = is_teredo
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self.subnets = subnets
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self.error_message = error_message
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def __call__(self, value):
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try:
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import ipaddress
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except ImportError:
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from contrib import ipaddr as ipaddress
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try:
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ip = ipaddress.IPv6Address(value)
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ok = True
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except ipaddress.AddressValueError:
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return (value, translate(self.error_message))
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if self.subnets:
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# iterate through self.subnets to see if value is a member
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ok = False
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if isinstance(self.subnets, str):
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self.subnets = [self.subnets]
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for network in self.subnets:
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try:
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ipnet = ipaddress.IPv6Network(network)
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except (ipaddress.NetmaskValueError, ipaddress.AddressValueError):
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return (value, translate('invalid subnet provided'))
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if ip in ipnet:
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ok = True
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if self.is_routeable:
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self.is_private = False
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self.is_link_local = False
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self.is_reserved = False
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self.is_multicast = False
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if not (self.is_private is None or self.is_private ==
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ip.is_private):
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ok = False
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if not (self.is_link_local is None or self.is_link_local ==
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ip.is_link_local):
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ok = False
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if not (self.is_reserved is None or self.is_reserved ==
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ip.is_reserved):
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ok = False
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if not (self.is_multicast is None or self.is_multicast ==
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ip.is_multicast):
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ok = False
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if not (self.is_6to4 is None or self.is_6to4 ==
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ip.is_6to4):
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ok = False
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if not (self.is_teredo is None or self.is_teredo ==
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ip.is_teredo):
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ok = False
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if ok:
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return (value, None)
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return (value, translate(self.error_message))
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if __name__ == '__main__':
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import doctest
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doctest.testmod(
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