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Copy pathip_address.py
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144 lines (108 loc) · 3.3 KB
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from .utils import validator
@validator
def ipv4(value):
"""
Return whether or not given value is a valid IP version 4 address.
This validator is based on `WTForms IPAddress validator`_
.. _WTForms IPAddress validator:
https://github.com/wtforms/wtforms/blob/master/wtforms/validators.py
Examples::
>>> ipv4('123.0.0.7')
True
>>> ipv4('900.80.70.11')
ValidationFailure(func=ipv4, args={'value': '900.80.70.11'})
.. versionadded:: 0.2
:param value: IP address string to validate
"""
groups = value.split('.')
if len(groups) != 4 or any(not x.isdigit() for x in groups):
return False
return all(0 <= int(part) < 256 for part in groups)
@validator
def ipv4_cidr(value):
"""
Return whether or not given value is a valid CIDR-notated IP version 4
address range.
This validator is based on RFC4632 3.1.
Examples::
>>> ipv4_cidr('1.1.1.1/8')
True
>>> ipv4_cidr('1.1.1.1')
ValidationFailure(func=ipv4_cidr, args={'value': '1.1.1.1'})
"""
try:
prefix, suffix = value.split('/', 2)
except ValueError:
return False
if not ipv4(prefix) or not suffix.isdigit():
return False
return 0 <= int(suffix) <= 32
@validator
def ipv6(value):
"""
Return whether or not given value is a valid IP version 6 address
(including IPv4-mapped IPv6 addresses).
This validator is based on `WTForms IPAddress validator`_.
.. _WTForms IPAddress validator:
https://github.com/wtforms/wtforms/blob/master/wtforms/validators.py
Examples::
>>> ipv6('abcd:ef::42:1')
True
>>> ipv6('::ffff:192.0.2.128')
True
>>> ipv6('::192.0.2.128')
True
>>> ipv6('abc.0.0.1')
ValidationFailure(func=ipv6, args={'value': 'abc.0.0.1'})
.. versionadded:: 0.2
:param value: IP address string to validate
"""
ipv6_groups = value.split(':')
if len(ipv6_groups) == 1:
return False
ipv4_groups = ipv6_groups[-1].split('.')
if len(ipv4_groups) > 1:
if not ipv4(ipv6_groups[-1]):
return False
ipv6_groups = ipv6_groups[:-1]
else:
ipv4_groups = []
max_groups = 6 if ipv4_groups else 8
if len(ipv6_groups) > max_groups:
return False
count_blank = 0
for part in ipv6_groups:
if not part:
count_blank += 1
continue
try:
num = int(part, 16)
except ValueError:
return False
else:
if not 0 <= num <= 65536:
return False
if count_blank < 2:
return True
elif count_blank == 2 and not ipv6_groups[0] and not ipv6_groups[1]:
return True
return False
@validator
def ipv6_cidr(value):
"""
Returns whether or not given value is a valid CIDR-notated IP version 6
address range.
This validator is based on RFC4632 3.1.
Examples::
>>> ipv6_cidr('::1/128')
True
>>> ipv6_cidr('::1')
ValidationFailure(func=ipv6_cidr, args={'value': '::1'})
"""
try:
prefix, suffix = value.split('/', 2)
except ValueError:
return False
if not ipv6(prefix) or not suffix.isdigit():
return False
return 0 <= int(suffix) <= 128