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authentik/passbook/flows/markers.py

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"""Stage Markers"""
from dataclasses import dataclass
from typing import TYPE_CHECKING, Optional
from django.http.request import HttpRequest
from structlog import get_logger
from passbook.core.models import User
from passbook.flows.models import Stage
from passbook.policies.engine import PolicyEngine
from passbook.policies.models import PolicyBinding
if TYPE_CHECKING:
from passbook.flows.planner import FlowPlan
LOGGER = get_logger()
@dataclass
class StageMarker:
"""Base stage marker class, no extra attributes, and has no special handler."""
# pylint: disable=unused-argument
def process(
self, plan: "FlowPlan", stage: Stage, http_request: Optional[HttpRequest]
) -> Optional[Stage]:
"""Process callback for this marker. This should be overridden by sub-classes.
If a stage should be removed, return None."""
return stage
@dataclass
class ReevaluateMarker(StageMarker):
"""Reevaluate Marker, forces stage's policies to be evaluated again."""
binding: PolicyBinding
user: User
def process(
self, plan: "FlowPlan", stage: Stage, http_request: Optional[HttpRequest]
) -> Optional[Stage]:
"""Re-evaluate policies bound to stage, and if they fail, remove from plan"""
engine = PolicyEngine(self.binding, self.user)
engine.use_cache = False
if http_request:
engine.request.http_request = http_request
engine.request.context = plan.context
engine.build()
result = engine.result
if result.passing:
return stage
LOGGER.warning(
"f(plan_inst)[re-eval marker]: stage failed re-evaluation",
stage=stage,
messages=result.messages,
)
return None