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authentik/passbook/policies/expression/models.py
Jens L 73116b9d1a
policies/expression: migrate to raw python instead of jinja2 (#49)
* policies/expression: migrate to raw python instead of jinja2

* lib/expression: create base evaluator, custom subclass for policies

* core: rewrite propertymappings to use python

* providers/saml: update to new PropertyMappings

* sources/ldap: update to new PropertyMappings

* docs: update docs for new propertymappings

* root: remove jinja2

* root: re-add jinja to lock file as its implicitly required
2020-06-05 12:00:27 +02:00

31 lines
1 KiB
Python

"""passbook expression Policy Models"""
from django.db import models
from django.utils.translation import gettext as _
from passbook.policies.expression.evaluator import PolicyEvaluator
from passbook.policies.models import Policy
from passbook.policies.types import PolicyRequest, PolicyResult
class ExpressionPolicy(Policy):
"""Implement custom logic using python."""
expression = models.TextField()
form = "passbook.policies.expression.forms.ExpressionPolicyForm"
def passes(self, request: PolicyRequest) -> PolicyResult:
"""Evaluate and render expression. Returns PolicyResult(false) on error."""
evaluator = PolicyEvaluator(self.name)
evaluator.set_policy_request(request)
return evaluator.evaluate(self.expression)
def save(self, *args, **kwargs):
PolicyEvaluator(self.name).validate(self.expression)
return super().save(*args, **kwargs)
class Meta:
verbose_name = _("Expression Policy")
verbose_name_plural = _("Expression Policies")