70 lines
2.3 KiB
Python
70 lines
2.3 KiB
Python
"""user field matcher models"""
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import re
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from typing import Type
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from django.db import models
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from django.forms import ModelForm
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from django.utils.translation import gettext as _
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from structlog import get_logger
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from passbook.policies.models import Policy
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from passbook.policies.types import PolicyRequest, PolicyResult
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LOGGER = get_logger()
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class PasswordPolicy(Policy):
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"""Policy to make sure passwords have certain properties"""
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password_field = models.TextField(
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default="password",
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help_text=_(
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"Field key to check, field keys defined in Prompt stages are available."
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),
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)
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amount_uppercase = models.IntegerField(default=0)
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amount_lowercase = models.IntegerField(default=0)
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amount_symbols = models.IntegerField(default=0)
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length_min = models.IntegerField(default=0)
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symbol_charset = models.TextField(default=r"!\"#$%&'()*+,-./:;<=>?@[\]^_`{|}~ ")
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error_message = models.TextField()
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def form(self) -> Type[ModelForm]:
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from passbook.policies.password.forms import PasswordPolicyForm
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return PasswordPolicyForm
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def passes(self, request: PolicyRequest) -> PolicyResult:
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if self.password_field not in request.context:
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LOGGER.warning(
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"Password field not set in Policy Request",
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field=self.password_field,
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fields=request.context.keys(),
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)
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password = request.context[self.password_field]
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filter_regex = []
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if self.amount_lowercase > 0:
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filter_regex.append(r"[a-z]{%d,}" % self.amount_lowercase)
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if self.amount_uppercase > 0:
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filter_regex.append(r"[A-Z]{%d,}" % self.amount_uppercase)
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if self.amount_symbols > 0:
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filter_regex.append(
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r"[%s]{%d,}" % (self.symbol_charset, self.amount_symbols)
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)
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full_regex = "|".join(filter_regex)
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LOGGER.debug("Built regex", regexp=full_regex)
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result = bool(re.compile(full_regex).match(password))
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result = result and len(password) >= self.length_min
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if not result:
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return PolicyResult(result, self.error_message)
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return PolicyResult(result)
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class Meta:
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verbose_name = _("Password Policy")
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verbose_name_plural = _("Password Policies")
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