727 lines
25 KiB
Python
727 lines
25 KiB
Python
"""authentik core models"""
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from datetime import timedelta
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from hashlib import sha256
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from typing import Any, Optional
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from uuid import uuid4
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from deepmerge import always_merger
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from django.contrib.auth.hashers import check_password
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from django.contrib.auth.models import AbstractUser
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from django.contrib.auth.models import UserManager as DjangoUserManager
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from django.db import models
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from django.db.models import Q, QuerySet, options
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from django.http import HttpRequest
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from django.utils.functional import SimpleLazyObject, cached_property
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from django.utils.timezone import now
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from django.utils.translation import gettext_lazy as _
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from guardian.mixins import GuardianUserMixin
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from model_utils.managers import InheritanceManager
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from rest_framework.serializers import Serializer
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from structlog.stdlib import get_logger
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from authentik.blueprints.models import ManagedModel
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from authentik.core.exceptions import PropertyMappingExpressionException
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from authentik.core.types import UILoginButton, UserSettingSerializer
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from authentik.lib.avatars import get_avatar
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from authentik.lib.config import CONFIG
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from authentik.lib.generators import generate_id
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from authentik.lib.models import (
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CreatedUpdatedModel,
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DomainlessFormattedURLValidator,
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SerializerModel,
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)
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from authentik.lib.utils.http import get_client_ip
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from authentik.policies.models import PolicyBindingModel
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from authentik.root.install_id import get_install_id
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LOGGER = get_logger()
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USER_ATTRIBUTE_DEBUG = "goauthentik.io/user/debug"
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USER_ATTRIBUTE_SA = "goauthentik.io/user/service-account"
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USER_ATTRIBUTE_GENERATED = "goauthentik.io/user/generated"
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USER_ATTRIBUTE_EXPIRES = "goauthentik.io/user/expires"
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USER_ATTRIBUTE_DELETE_ON_LOGOUT = "goauthentik.io/user/delete-on-logout"
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USER_ATTRIBUTE_SOURCES = "goauthentik.io/user/sources"
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USER_ATTRIBUTE_TOKEN_EXPIRING = "goauthentik.io/user/token-expires" # nosec
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USER_ATTRIBUTE_CHANGE_USERNAME = "goauthentik.io/user/can-change-username"
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USER_ATTRIBUTE_CHANGE_NAME = "goauthentik.io/user/can-change-name"
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USER_ATTRIBUTE_CHANGE_EMAIL = "goauthentik.io/user/can-change-email"
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USER_ATTRIBUTE_CAN_OVERRIDE_IP = "goauthentik.io/user/override-ips"
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USER_PATH_SYSTEM_PREFIX = "goauthentik.io"
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USER_PATH_SERVICE_ACCOUNT = USER_PATH_SYSTEM_PREFIX + "/service-accounts"
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options.DEFAULT_NAMES = options.DEFAULT_NAMES + ("authentik_used_by_shadows",)
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def default_token_duration():
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"""Default duration a Token is valid"""
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return now() + timedelta(minutes=30)
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def default_token_key():
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"""Default token key"""
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# We use generate_id since the chars in the key should be easy
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# to use in Emails (for verification) and URLs (for recovery)
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return generate_id(int(CONFIG.y("default_token_length")))
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class Group(SerializerModel):
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"""Custom Group model which supports a basic hierarchy"""
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group_uuid = models.UUIDField(primary_key=True, editable=False, default=uuid4)
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name = models.CharField(_("name"), max_length=80)
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is_superuser = models.BooleanField(
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default=False, help_text=_("Users added to this group will be superusers.")
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)
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parent = models.ForeignKey(
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"Group",
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blank=True,
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null=True,
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default=None,
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on_delete=models.SET_NULL,
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related_name="children",
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)
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attributes = models.JSONField(default=dict, blank=True)
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@property
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def serializer(self) -> Serializer:
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from authentik.core.api.groups import GroupSerializer
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return GroupSerializer
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@property
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def num_pk(self) -> int:
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"""Get a numerical, int32 ID for the group"""
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# int max is 2147483647 (10 digits) so 9 is the max usable
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# in the LDAP Outpost we use the last 5 chars so match here
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return int(str(self.pk.int)[:5])
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def is_member(self, user: "User") -> bool:
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"""Recursively check if `user` is member of us, or any parent."""
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query = """
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WITH RECURSIVE parents AS (
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SELECT authentik_core_group.*, 0 AS relative_depth
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FROM authentik_core_group
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WHERE authentik_core_group.group_uuid = %s
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UNION ALL
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SELECT authentik_core_group.*, parents.relative_depth - 1
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FROM authentik_core_group,parents
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WHERE (
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authentik_core_group.parent_id = parents.group_uuid and
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parents.relative_depth > -20
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)
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)
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SELECT group_uuid
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FROM parents
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GROUP BY group_uuid;
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"""
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groups = Group.objects.raw(query, [self.group_uuid])
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return user.ak_groups.filter(pk__in=[group.pk for group in groups]).exists()
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def __str__(self):
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return f"Group {self.name}"
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class Meta:
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unique_together = (
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(
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"name",
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"parent",
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),
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)
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class UserManager(DjangoUserManager):
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"""Custom user manager that doesn't assign is_superuser and is_staff"""
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def create_user(self, username, email=None, password=None, **extra_fields):
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"""Custom user manager that doesn't assign is_superuser and is_staff"""
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return self._create_user(username, email, password, **extra_fields)
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class User(SerializerModel, GuardianUserMixin, AbstractUser):
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"""Custom User model to allow easier adding of user-based settings"""
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uuid = models.UUIDField(default=uuid4, editable=False, unique=True)
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name = models.TextField(help_text=_("User's display name."))
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path = models.TextField(default="users")
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sources = models.ManyToManyField("Source", through="UserSourceConnection")
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ak_groups = models.ManyToManyField("Group", related_name="users")
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password_change_date = models.DateTimeField(auto_now_add=True)
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attributes = models.JSONField(default=dict, blank=True)
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objects = UserManager()
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@staticmethod
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def default_path() -> str:
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"""Get the default user path"""
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return User._meta.get_field("path").default
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def group_attributes(self, request: Optional[HttpRequest] = None) -> dict[str, Any]:
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"""Get a dictionary containing the attributes from all groups the user belongs to,
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including the users attributes"""
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final_attributes = {}
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if request and hasattr(request, "tenant"):
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always_merger.merge(final_attributes, request.tenant.attributes)
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for group in self.ak_groups.all().order_by("name"):
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always_merger.merge(final_attributes, group.attributes)
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always_merger.merge(final_attributes, self.attributes)
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return final_attributes
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@property
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def serializer(self) -> Serializer:
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from authentik.core.api.users import UserSerializer
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return UserSerializer
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@cached_property
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def is_superuser(self) -> bool:
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"""Get supseruser status based on membership in a group with superuser status"""
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return self.ak_groups.filter(is_superuser=True).exists()
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@property
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def is_staff(self) -> bool:
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"""superuser == staff user"""
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return self.is_superuser # type: ignore
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def set_password(self, raw_password, signal=True):
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if self.pk and signal:
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from authentik.core.signals import password_changed
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password_changed.send(sender=self, user=self, password=raw_password)
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self.password_change_date = now()
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return super().set_password(raw_password)
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def check_password(self, raw_password: str) -> bool:
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"""
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Return a boolean of whether the raw_password was correct. Handles
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hashing formats behind the scenes.
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Slightly changed version which doesn't send a signal for such internal hash upgrades
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"""
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def setter(raw_password):
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self.set_password(raw_password, signal=False)
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# Password hash upgrades shouldn't be considered password changes.
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self._password = None
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self.save(update_fields=["password"])
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return check_password(raw_password, self.password, setter)
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@property
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def uid(self) -> str:
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"""Generate a globally unique UID, based on the user ID and the hashed secret key"""
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return sha256(f"{self.id}-{get_install_id()}".encode("ascii")).hexdigest()
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def locale(self, request: Optional[HttpRequest] = None) -> str:
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"""Get the locale the user has configured"""
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try:
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return self.attributes.get("settings", {}).get("locale", "")
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# pylint: disable=broad-except
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except Exception as exc:
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LOGGER.warning("Failed to get default locale", exc=exc)
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if request:
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return request.tenant.locale
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return ""
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@property
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def avatar(self) -> str:
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"""Get avatar, depending on authentik.avatar setting"""
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return get_avatar(self)
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class Meta:
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permissions = (
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("reset_user_password", "Reset Password"),
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("impersonate", "Can impersonate other users"),
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)
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verbose_name = _("User")
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verbose_name_plural = _("Users")
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class Provider(SerializerModel):
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"""Application-independent Provider instance. For example SAML2 Remote, OAuth2 Application"""
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name = models.TextField(unique=True)
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authentication_flow = models.ForeignKey(
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"authentik_flows.Flow",
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null=True,
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on_delete=models.SET_NULL,
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help_text=_(
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"Flow used for authentication when the associated application is accessed by an "
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"un-authenticated user."
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),
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related_name="provider_authentication",
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)
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authorization_flow = models.ForeignKey(
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"authentik_flows.Flow",
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on_delete=models.CASCADE,
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null=True,
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help_text=_("Flow used when authorizing this provider."),
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related_name="provider_authorization",
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)
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property_mappings = models.ManyToManyField("PropertyMapping", default=None, blank=True)
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backchannel_application = models.ForeignKey(
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"Application",
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default=None,
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null=True,
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on_delete=models.CASCADE,
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help_text=_(
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"Accessed from applications; optional backchannel providers for protocols "
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"like LDAP and SCIM."
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),
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related_name="backchannel_providers",
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)
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is_backchannel = models.BooleanField(default=False)
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objects = InheritanceManager()
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@property
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def launch_url(self) -> Optional[str]:
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"""URL to this provider and initiate authorization for the user.
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Can return None for providers that are not URL-based"""
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return None
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@property
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def component(self) -> str:
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"""Return component used to edit this object"""
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raise NotImplementedError
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@property
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def serializer(self) -> type[Serializer]:
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"""Get serializer for this model"""
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raise NotImplementedError
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def __str__(self):
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return str(self.name)
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class BackchannelProvider(Provider):
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"""Base class for providers that augment other providers, for example LDAP and SCIM.
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Multiple of these providers can be configured per application, they may not use the application
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slug in URLs as an application may have multiple instances of the same
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type of Backchannel provider
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They can use the application's policies and metadata"""
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@property
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def component(self) -> str:
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raise NotImplementedError
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@property
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def serializer(self) -> type[Serializer]:
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raise NotImplementedError
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class Meta:
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abstract = True
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class Application(SerializerModel, PolicyBindingModel):
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"""Every Application which uses authentik for authentication/identification/authorization
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needs an Application record. Other authentication types can subclass this Model to
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add custom fields and other properties"""
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name = models.TextField(help_text=_("Application's display Name."))
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slug = models.SlugField(help_text=_("Internal application name, used in URLs."), unique=True)
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group = models.TextField(blank=True, default="")
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provider = models.OneToOneField(
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"Provider", null=True, blank=True, default=None, on_delete=models.SET_DEFAULT
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)
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meta_launch_url = models.TextField(
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default="", blank=True, validators=[DomainlessFormattedURLValidator()]
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)
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open_in_new_tab = models.BooleanField(
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default=False, help_text=_("Open launch URL in a new browser tab or window.")
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)
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# For template applications, this can be set to /static/authentik/applications/*
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meta_icon = models.FileField(
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upload_to="application-icons/",
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default=None,
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null=True,
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max_length=500,
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)
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meta_description = models.TextField(default="", blank=True)
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meta_publisher = models.TextField(default="", blank=True)
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@property
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def serializer(self) -> Serializer:
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from authentik.core.api.applications import ApplicationSerializer
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return ApplicationSerializer
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@property
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def get_meta_icon(self) -> Optional[str]:
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"""Get the URL to the App Icon image. If the name is /static or starts with http
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it is returned as-is"""
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if not self.meta_icon:
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return None
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if "://" in self.meta_icon.name or self.meta_icon.name.startswith("/static"):
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return self.meta_icon.name
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return self.meta_icon.url
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def get_launch_url(self, user: Optional["User"] = None) -> Optional[str]:
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"""Get launch URL if set, otherwise attempt to get launch URL based on provider."""
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url = None
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if provider := self.get_provider():
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url = provider.launch_url
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if self.meta_launch_url:
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url = self.meta_launch_url
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if user and url:
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if isinstance(user, SimpleLazyObject):
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user._setup()
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user = user._wrapped
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try:
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return url % user.__dict__
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# pylint: disable=broad-except
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except Exception as exc:
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LOGGER.warning("Failed to format launch url", exc=exc)
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return url
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return url
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def get_provider(self) -> Optional[Provider]:
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"""Get casted provider instance"""
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if not self.provider:
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return None
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# if the Application class has been cache, self.provider is set
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# but doing a direct query lookup will fail.
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# In that case, just return None
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try:
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return Provider.objects.get_subclass(pk=self.provider.pk)
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except Provider.DoesNotExist:
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return None
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def __str__(self):
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return str(self.name)
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class Meta:
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verbose_name = _("Application")
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verbose_name_plural = _("Applications")
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class SourceUserMatchingModes(models.TextChoices):
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"""Different modes a source can handle new/returning users"""
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IDENTIFIER = "identifier", _("Use the source-specific identifier")
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EMAIL_LINK = "email_link", _(
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"Link to a user with identical email address. Can have security implications "
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"when a source doesn't validate email addresses."
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)
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EMAIL_DENY = "email_deny", _(
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"Use the user's email address, but deny enrollment when the email address already exists."
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)
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USERNAME_LINK = "username_link", _(
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"Link to a user with identical username. Can have security implications "
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"when a username is used with another source."
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)
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USERNAME_DENY = "username_deny", _(
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"Use the user's username, but deny enrollment when the username already exists."
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)
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class Source(ManagedModel, SerializerModel, PolicyBindingModel):
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"""Base Authentication source, i.e. an OAuth Provider, SAML Remote or LDAP Server"""
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name = models.TextField(help_text=_("Source's display Name."))
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slug = models.SlugField(help_text=_("Internal source name, used in URLs."), unique=True)
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user_path_template = models.TextField(default="goauthentik.io/sources/%(slug)s")
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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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icon = models.FileField(
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upload_to="source-icons/",
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default=None,
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null=True,
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max_length=500,
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)
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authentication_flow = models.ForeignKey(
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"authentik_flows.Flow",
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blank=True,
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null=True,
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default=None,
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on_delete=models.SET_NULL,
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help_text=_("Flow to use when authenticating existing users."),
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related_name="source_authentication",
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)
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enrollment_flow = models.ForeignKey(
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"authentik_flows.Flow",
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blank=True,
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null=True,
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default=None,
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on_delete=models.SET_NULL,
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help_text=_("Flow to use when enrolling new users."),
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related_name="source_enrollment",
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)
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user_matching_mode = models.TextField(
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choices=SourceUserMatchingModes.choices,
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default=SourceUserMatchingModes.IDENTIFIER,
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help_text=_(
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"How the source determines if an existing user should be authenticated or "
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"a new user enrolled."
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),
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)
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objects = InheritanceManager()
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@property
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def get_icon(self) -> Optional[str]:
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"""Get the URL to the Icon. If the name is /static or
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starts with http it is returned as-is"""
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if not self.icon:
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return None
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if "://" in self.icon.name or self.icon.name.startswith("/static"):
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return self.icon.name
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return self.icon.url
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def get_user_path(self) -> str:
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"""Get user path, fallback to default for formatting errors"""
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try:
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return self.user_path_template % {
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"slug": self.slug,
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}
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# pylint: disable=broad-except
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except Exception as exc:
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LOGGER.warning("Failed to template user path", exc=exc, source=self)
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return User.default_path()
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@property
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def component(self) -> str:
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"""Return component used to edit this object"""
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raise NotImplementedError
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def ui_login_button(self, request: HttpRequest) -> Optional[UILoginButton]:
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"""If source uses a http-based flow, return UI Information about the login
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button. If source doesn't use http-based flow, return None."""
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return None
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def ui_user_settings(self) -> Optional[UserSettingSerializer]:
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"""Entrypoint to integrate with User settings. Can either return None if no
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user settings are available, or UserSettingSerializer."""
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return None
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def __str__(self):
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return str(self.name)
|
|
|
|
class Meta:
|
|
indexes = [
|
|
models.Index(
|
|
fields=[
|
|
"slug",
|
|
]
|
|
),
|
|
models.Index(
|
|
fields=[
|
|
"name",
|
|
]
|
|
),
|
|
]
|
|
|
|
|
|
class UserSourceConnection(SerializerModel, CreatedUpdatedModel):
|
|
"""Connection between User and Source."""
|
|
|
|
user = models.ForeignKey(User, on_delete=models.CASCADE)
|
|
source = models.ForeignKey(Source, on_delete=models.CASCADE)
|
|
|
|
objects = InheritanceManager()
|
|
|
|
@property
|
|
def serializer(self) -> type[Serializer]:
|
|
"""Get serializer for this model"""
|
|
raise NotImplementedError
|
|
|
|
class Meta:
|
|
unique_together = (("user", "source"),)
|
|
|
|
|
|
class ExpiringModel(models.Model):
|
|
"""Base Model which can expire, and is automatically cleaned up."""
|
|
|
|
expires = models.DateTimeField(default=default_token_duration)
|
|
expiring = models.BooleanField(default=True)
|
|
|
|
def expire_action(self, *args, **kwargs):
|
|
"""Handler which is called when this object is expired. By
|
|
default the object is deleted. This is less efficient compared
|
|
to bulk deleting objects, but classes like Token() need to change
|
|
values instead of being deleted."""
|
|
return self.delete(*args, **kwargs)
|
|
|
|
@classmethod
|
|
def filter_not_expired(cls, **kwargs) -> QuerySet:
|
|
"""Filer for tokens which are not expired yet or are not expiring,
|
|
and match filters in `kwargs`"""
|
|
for obj in cls.objects.filter(**kwargs).filter(Q(expires__lt=now(), expiring=True)):
|
|
obj.delete()
|
|
return cls.objects.filter(**kwargs)
|
|
|
|
@property
|
|
def is_expired(self) -> bool:
|
|
"""Check if token is expired yet."""
|
|
if not self.expiring:
|
|
return False
|
|
return now() > self.expires
|
|
|
|
class Meta:
|
|
abstract = True
|
|
|
|
|
|
class TokenIntents(models.TextChoices):
|
|
"""Intents a Token can be created for."""
|
|
|
|
# Single use token
|
|
INTENT_VERIFICATION = "verification"
|
|
|
|
# Allow access to API
|
|
INTENT_API = "api"
|
|
|
|
# Recovery use for the recovery app
|
|
INTENT_RECOVERY = "recovery"
|
|
|
|
# App-specific passwords
|
|
INTENT_APP_PASSWORD = "app_password" # nosec
|
|
|
|
|
|
class Token(SerializerModel, ManagedModel, ExpiringModel):
|
|
"""Token used to authenticate the User for API Access or confirm another Stage like Email."""
|
|
|
|
token_uuid = models.UUIDField(primary_key=True, editable=False, default=uuid4)
|
|
identifier = models.SlugField(max_length=255, unique=True)
|
|
key = models.TextField(default=default_token_key)
|
|
intent = models.TextField(
|
|
choices=TokenIntents.choices, default=TokenIntents.INTENT_VERIFICATION
|
|
)
|
|
user = models.ForeignKey("User", on_delete=models.CASCADE, related_name="+")
|
|
description = models.TextField(default="", blank=True)
|
|
|
|
@property
|
|
def serializer(self) -> type[Serializer]:
|
|
from authentik.core.api.tokens import TokenSerializer
|
|
|
|
return TokenSerializer
|
|
|
|
def expire_action(self, *args, **kwargs):
|
|
"""Handler which is called when this object is expired."""
|
|
from authentik.events.models import Event, EventAction
|
|
|
|
if self.intent in [
|
|
TokenIntents.INTENT_RECOVERY,
|
|
TokenIntents.INTENT_VERIFICATION,
|
|
TokenIntents.INTENT_APP_PASSWORD,
|
|
]:
|
|
super().expire_action(*args, **kwargs)
|
|
return
|
|
|
|
self.key = default_token_key()
|
|
self.expires = default_token_duration()
|
|
self.save(*args, **kwargs)
|
|
Event.new(
|
|
action=EventAction.SECRET_ROTATE,
|
|
token=self,
|
|
message=f"Token {self.identifier}'s secret was rotated.",
|
|
).save()
|
|
|
|
def __str__(self):
|
|
description = f"{self.identifier}"
|
|
if self.expiring:
|
|
description += f" (expires={self.expires})"
|
|
return description
|
|
|
|
class Meta:
|
|
verbose_name = _("Token")
|
|
verbose_name_plural = _("Tokens")
|
|
indexes = [
|
|
models.Index(fields=["identifier"]),
|
|
models.Index(fields=["key"]),
|
|
]
|
|
permissions = (("view_token_key", "View token's key"),)
|
|
|
|
|
|
class PropertyMapping(SerializerModel, ManagedModel):
|
|
"""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(unique=True)
|
|
expression = models.TextField()
|
|
|
|
objects = InheritanceManager()
|
|
|
|
@property
|
|
def component(self) -> str:
|
|
"""Return component used to edit this object"""
|
|
raise NotImplementedError
|
|
|
|
@property
|
|
def serializer(self) -> type[Serializer]:
|
|
"""Get serializer for this model"""
|
|
raise NotImplementedError
|
|
|
|
def evaluate(self, user: Optional[User], request: Optional[HttpRequest], **kwargs) -> Any:
|
|
"""Evaluate `self.expression` using `**kwargs` as Context."""
|
|
from authentik.core.expression.evaluator import PropertyMappingEvaluator
|
|
|
|
evaluator = PropertyMappingEvaluator(self, user, request, **kwargs)
|
|
try:
|
|
return evaluator.evaluate(self.expression)
|
|
except Exception as exc:
|
|
raise PropertyMappingExpressionException(exc) from exc
|
|
|
|
def __str__(self):
|
|
return f"Property Mapping {self.name}"
|
|
|
|
class Meta:
|
|
verbose_name = _("Property Mapping")
|
|
verbose_name_plural = _("Property Mappings")
|
|
|
|
|
|
class AuthenticatedSession(ExpiringModel):
|
|
"""Additional session class for authenticated users. Augments the standard django session
|
|
to achieve the following:
|
|
- Make it queryable by user
|
|
- Have a direct connection to user objects
|
|
- Allow users to view their own sessions and terminate them
|
|
- Save structured and well-defined information.
|
|
"""
|
|
|
|
uuid = models.UUIDField(default=uuid4, primary_key=True)
|
|
|
|
session_key = models.CharField(max_length=40)
|
|
user = models.ForeignKey(User, on_delete=models.CASCADE)
|
|
|
|
last_ip = models.TextField()
|
|
last_user_agent = models.TextField(blank=True)
|
|
last_used = models.DateTimeField(auto_now=True)
|
|
|
|
@staticmethod
|
|
def from_request(request: HttpRequest, user: User) -> Optional["AuthenticatedSession"]:
|
|
"""Create a new session from a http request"""
|
|
if not hasattr(request, "session") or not request.session.session_key:
|
|
return None
|
|
return AuthenticatedSession(
|
|
session_key=request.session.session_key,
|
|
user=user,
|
|
last_ip=get_client_ip(request),
|
|
last_user_agent=request.META.get("HTTP_USER_AGENT", ""),
|
|
expires=request.session.get_expiry_date(),
|
|
)
|
|
|
|
class Meta:
|
|
verbose_name = _("Authenticated Session")
|
|
verbose_name_plural = _("Authenticated Sessions")
|