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67 lines
2.4 KiB
Python
67 lines
2.4 KiB
Python
"""Custom password validators."""
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from django.core.exceptions import ValidationError
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from django.utils.translation import ugettext as _, ungettext
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class ComplexityValidator(object):
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"""Check password contains at least a few things."""
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def __init__(self, upper=1, lower=1, digits=1, specials=1):
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self.upper = upper
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self.lower = lower
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self.digits = digits
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self.specials = specials
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def validate(self, password, user=None):
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special_characters = "~!@#$%^&*()_+{}\":;,'[]"
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condition = (
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self.digits > 0 and
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sum(1 for char in password if char.isdigit()) < self.digits)
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if condition:
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raise ValidationError(
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ungettext(
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"Password must contain at least {} digit.",
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"Password must contain at least {} digits.",
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self.digits
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).format(self.digits))
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condition = (
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self.lower > 0 and
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sum(1 for char in password if char.islower()) < self.lower)
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if condition:
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raise ValidationError(
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ungettext(
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"Password must contain at least {} lowercase letter.",
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"Password must contain at least {} lowercase letters.",
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self.lower
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)
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.format(self.lower))
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condition = (
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self.upper > 0 and
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sum(1 for char in password if char.isupper()) < self.upper)
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if condition:
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raise ValidationError(
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ungettext(
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"Password must contain at least {} uppercase letter.",
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"Password must contain at least {} uppercase letters.",
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self.upper
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)
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.format(self.upper))
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condition = (
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self.specials > 0 and
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sum(1 for char in password if char in special_characters) <
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self.specials)
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if condition:
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raise ValidationError(
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ungettext(
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"Password must contain at least {} special character.",
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"Password must contain at least {} special characters.",
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self.specials
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)
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.format(self.specials))
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def get_help_text(self):
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return _(
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"Your password must contain a combination of different "
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"character types.")
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