70 lines
1.8 KiB
Python
70 lines
1.8 KiB
Python
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import re
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import crack
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from django.core import validators
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from django.core.exceptions import ValidationError
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from django.utils.translation import ugettext_lazy as _
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from IPy import IP
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def validate_ipv4_address(value):
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msg = _("%s is not a valid IPv4 address") % value
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try:
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ip = IP(value)
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except:
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raise ValidationError(msg)
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if ip.version() != 4:
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raise ValidationError(msg)
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def validate_ipv6_address(value):
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msg = _("%s is not a valid IPv6 address") % value
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try:
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ip = IP(value)
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except:
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raise ValidationError(msg)
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if ip.version() != 6:
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raise ValidationError(msg)
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def validate_name(value):
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"""
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A single non-empty line of free-form text with no whitespace
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surrounding it.
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"""
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validators.RegexValidator('^\S.*\S$',
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_("Enter a valid name (text without whitspaces)."), 'invalid')(value)
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def validate_ascii(value):
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try:
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value.decode('ascii')
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except UnicodeDecodeError:
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raise ValidationError('This is not an ASCII string.')
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def validate_hostname(hostname):
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"""
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Ensures that each segment
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* contains at least one character and a maximum of 63 characters
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* consists only of allowed characters
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* doesn't begin or end with a hyphen.
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http://stackoverflow.com/a/2532344
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"""
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if len(hostname) > 255:
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return False
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if hostname[-1] == ".":
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hostname = hostname[:-1] # strip exactly one dot from the right, if present
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allowed = re.compile("(?!-)[A-Z\d-]{1,63}(?<!-)$", re.IGNORECASE)
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return all(allowed.match(x) for x in hostname.split("."))
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def validate_password(value):
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try:
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crack.VeryFascistCheck(value)
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except ValueError, message:
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raise ValidationError("Password %s." % str(message)[3:])
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