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authentik/passbook/core/models.py

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"""passbook core models"""
from datetime import timedelta
from typing import Any, Optional
from uuid import uuid4
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from django.contrib.auth.models import AbstractUser
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from django.contrib.postgres.fields import JSONField
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from django.db import models
from django.http import HttpRequest
from django.utils.timezone import now
from django.utils.translation import gettext_lazy as _
from guardian.mixins import GuardianUserMixin
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from model_utils.managers import InheritanceManager
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from structlog import get_logger
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from passbook.core.exceptions import PropertyMappingExpressionException
from passbook.core.signals import password_changed
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from passbook.core.types import UILoginButton, UIUserSettings
WIP Use Flows for Sources and Providers (#32) * core: start migrating to flows for authorisation * sources/oauth: start type-hinting * core: create default user * core: only show user delete button if an unenrollment flow exists * flows: Correctly check initial policies on flow with context * policies: add more verbosity to engine * sources/oauth: migrate to flows * sources/oauth: fix typing errors * flows: add more tests * sources/oauth: start implementing unittests * sources/ldap: add option to disable user sync, move connection init to model * sources/ldap: re-add default PropertyMappings * providers/saml: re-add default PropertyMappings * admin: fix missing stage count * stages/identification: fix sources not being shown * crypto: fix being unable to save with private key * crypto: re-add default self-signed keypair * policies: rewrite cache_key to prevent wrong cache * sources/saml: migrate to flows for auth and enrollment * stages/consent: add new stage * admin: fix PropertyMapping widget not rendering properly * core: provider.authorization_flow is mandatory * flows: add support for "autosubmit" attribute on form * flows: add InMemoryStage for dynamic stages * flows: optionally allow empty flows from FlowPlanner * providers/saml: update to authorization_flow * sources/*: fix flow executor URL * flows: fix pylint error * flows: wrap responses in JSON object to easily handle redirects * flow: dont cache plan's context * providers/oauth: rewrite OAuth2 Provider to use flows * providers/*: update docstrings of models * core: fix forms not passing help_text through safe * flows: fix HttpResponses not being converted to JSON * providers/oidc: rewrite to use flows * flows: fix linting
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from passbook.flows.models import Flow
from passbook.lib.models import CreatedUpdatedModel
from passbook.policies.models import PolicyBindingModel
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LOGGER = get_logger()
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def default_token_duration():
"""Default duration a Token is valid"""
return now() + timedelta(minutes=30)
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class Group(models.Model):
"""Custom Group model which supports a basic hierarchy"""
group_uuid = models.UUIDField(primary_key=True, editable=False, default=uuid4)
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name = models.CharField(_("name"), max_length=80)
parent = models.ForeignKey(
"Group",
blank=True,
null=True,
on_delete=models.SET_NULL,
related_name="children",
)
attributes = JSONField(default=dict, blank=True)
def __str__(self):
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return f"Group {self.name}"
class Meta:
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unique_together = (("name", "parent",),)
class User(GuardianUserMixin, AbstractUser):
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"""Custom User model to allow easier adding o f user-based settings"""
uuid = models.UUIDField(default=uuid4, editable=False)
name = models.TextField(help_text=_("User's display name."))
sources = models.ManyToManyField("Source", through="UserSourceConnection")
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groups = models.ManyToManyField("Group")
password_change_date = models.DateTimeField(auto_now_add=True)
attributes = JSONField(default=dict, blank=True)
def set_password(self, password):
if self.pk:
password_changed.send(sender=self, user=self, password=password)
self.password_change_date = now()
return super().set_password(password)
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class Meta:
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permissions = (("reset_user_password", "Reset Password"),)
class Provider(models.Model):
"""Application-independent Provider instance. For example SAML2 Remote, OAuth2 Application"""
WIP Use Flows for Sources and Providers (#32) * core: start migrating to flows for authorisation * sources/oauth: start type-hinting * core: create default user * core: only show user delete button if an unenrollment flow exists * flows: Correctly check initial policies on flow with context * policies: add more verbosity to engine * sources/oauth: migrate to flows * sources/oauth: fix typing errors * flows: add more tests * sources/oauth: start implementing unittests * sources/ldap: add option to disable user sync, move connection init to model * sources/ldap: re-add default PropertyMappings * providers/saml: re-add default PropertyMappings * admin: fix missing stage count * stages/identification: fix sources not being shown * crypto: fix being unable to save with private key * crypto: re-add default self-signed keypair * policies: rewrite cache_key to prevent wrong cache * sources/saml: migrate to flows for auth and enrollment * stages/consent: add new stage * admin: fix PropertyMapping widget not rendering properly * core: provider.authorization_flow is mandatory * flows: add support for "autosubmit" attribute on form * flows: add InMemoryStage for dynamic stages * flows: optionally allow empty flows from FlowPlanner * providers/saml: update to authorization_flow * sources/*: fix flow executor URL * flows: fix pylint error * flows: wrap responses in JSON object to easily handle redirects * flow: dont cache plan's context * providers/oauth: rewrite OAuth2 Provider to use flows * providers/*: update docstrings of models * core: fix forms not passing help_text through safe * flows: fix HttpResponses not being converted to JSON * providers/oidc: rewrite to use flows * flows: fix linting
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authorization_flow = models.ForeignKey(
Flow,
on_delete=models.CASCADE,
help_text=_("Flow used when authorizing this provider."),
related_name="provider_authorization",
)
property_mappings = models.ManyToManyField(
"PropertyMapping", default=None, blank=True
)
objects = InheritanceManager()
# This class defines no field for easier inheritance
def __str__(self):
if hasattr(self, "name"):
return getattr(self, "name")
return super().__str__()
class Application(PolicyBindingModel):
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"""Every Application which uses passbook for authentication/identification/authorization
needs an Application record. Other authentication types can subclass this Model to
add custom fields and other properties"""
name = models.TextField(help_text=_("Application's display Name."))
slug = models.SlugField(help_text=_("Internal application name, used in URLs."))
provider = models.OneToOneField(
"Provider", null=True, blank=True, default=None, on_delete=models.SET_DEFAULT
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)
meta_launch_url = models.URLField(default="", blank=True)
meta_icon_url = models.TextField(default="", blank=True)
meta_description = models.TextField(default="", blank=True)
meta_publisher = models.TextField(default="", blank=True)
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def get_provider(self) -> Optional[Provider]:
"""Get casted provider instance"""
if not self.provider:
return None
return Provider.objects.get_subclass(pk=self.provider.pk)
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def __str__(self):
return self.name
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class Source(PolicyBindingModel):
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"""Base Authentication source, i.e. an OAuth Provider, SAML Remote or LDAP Server"""
name = models.TextField(help_text=_("Source's display Name."))
slug = models.SlugField(help_text=_("Internal source name, used in URLs."))
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enabled = models.BooleanField(default=True)
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property_mappings = models.ManyToManyField(
"PropertyMapping", default=None, blank=True
)
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WIP Use Flows for Sources and Providers (#32) * core: start migrating to flows for authorisation * sources/oauth: start type-hinting * core: create default user * core: only show user delete button if an unenrollment flow exists * flows: Correctly check initial policies on flow with context * policies: add more verbosity to engine * sources/oauth: migrate to flows * sources/oauth: fix typing errors * flows: add more tests * sources/oauth: start implementing unittests * sources/ldap: add option to disable user sync, move connection init to model * sources/ldap: re-add default PropertyMappings * providers/saml: re-add default PropertyMappings * admin: fix missing stage count * stages/identification: fix sources not being shown * crypto: fix being unable to save with private key * crypto: re-add default self-signed keypair * policies: rewrite cache_key to prevent wrong cache * sources/saml: migrate to flows for auth and enrollment * stages/consent: add new stage * admin: fix PropertyMapping widget not rendering properly * core: provider.authorization_flow is mandatory * flows: add support for "autosubmit" attribute on form * flows: add InMemoryStage for dynamic stages * flows: optionally allow empty flows from FlowPlanner * providers/saml: update to authorization_flow * sources/*: fix flow executor URL * flows: fix pylint error * flows: wrap responses in JSON object to easily handle redirects * flow: dont cache plan's context * providers/oauth: rewrite OAuth2 Provider to use flows * providers/*: update docstrings of models * core: fix forms not passing help_text through safe * flows: fix HttpResponses not being converted to JSON * providers/oidc: rewrite to use flows * flows: fix linting
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authentication_flow = models.ForeignKey(
Flow,
blank=True,
null=True,
default=None,
on_delete=models.SET_NULL,
help_text=_("Flow to use when authenticating existing users."),
related_name="source_authentication",
)
enrollment_flow = models.ForeignKey(
Flow,
blank=True,
null=True,
default=None,
on_delete=models.SET_NULL,
help_text=_("Flow to use when enrolling new users."),
related_name="source_enrollment",
)
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form = "" # ModelForm-based class ued to create/edit instance
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objects = InheritanceManager()
@property
def ui_login_button(self) -> Optional[UILoginButton]:
"""If source uses a http-based flow, return UI Information about the login
button. If source doesn't use http-based flow, return None."""
return None
@property
def ui_additional_info(self) -> Optional[str]:
"""Return additional Info, such as a callback URL. Show in the administration interface."""
return None
@property
def ui_user_settings(self) -> Optional[UIUserSettings]:
"""Entrypoint to integrate with User settings. Can either return None if no
user settings are available, or an instanace of UIUserSettings."""
return None
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def __str__(self):
return self.name
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class UserSourceConnection(CreatedUpdatedModel):
"""Connection between User and Source."""
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user = models.ForeignKey(User, on_delete=models.CASCADE)
source = models.ForeignKey(Source, on_delete=models.CASCADE)
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class Meta:
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unique_together = (("user", "source"),)
class Token(models.Model):
"""One-time link for password resets/sign-up-confirmations"""
token_uuid = models.UUIDField(primary_key=True, editable=False, default=uuid4)
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expires = models.DateTimeField(default=default_token_duration)
user = models.ForeignKey("User", on_delete=models.CASCADE, related_name="+")
expiring = models.BooleanField(default=True)
description = models.TextField(default="", blank=True)
@property
def is_expired(self) -> bool:
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"""Check if token is expired yet."""
return now() > self.expires
def __str__(self):
return (
f"Token f{self.token_uuid.hex} {self.description} (expires={self.expires})"
)
class Meta:
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verbose_name = _("Token")
verbose_name_plural = _("Tokens")
class PropertyMapping(models.Model):
"""User-defined key -> x mapping which can be used by providers to expose extra data."""
pm_uuid = models.UUIDField(primary_key=True, editable=False, default=uuid4)
name = models.TextField()
expression = models.TextField()
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form = ""
objects = InheritanceManager()
def evaluate(
self, user: Optional[User], request: Optional[HttpRequest], **kwargs
) -> Any:
"""Evaluate `self.expression` using `**kwargs` as Context."""
from passbook.core.expression import PropertyMappingEvaluator
evaluator = PropertyMappingEvaluator()
evaluator.set_context(user, request, **kwargs)
try:
return evaluator.evaluate(self.expression)
except (ValueError, SyntaxError) as exc:
raise PropertyMappingExpressionException from exc
def __str__(self):
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return f"Property Mapping {self.name}"
class Meta:
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verbose_name = _("Property Mapping")
verbose_name_plural = _("Property Mappings")