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Aegis/backend/app/routers/techniques.py

237 lines
7.4 KiB
Python

"""CRUD router for MITRE ATT&CK Techniques."""
from datetime import datetime
from fastapi import APIRouter, Depends, HTTPException, Query, status
from sqlalchemy.orm import Session, joinedload
from app.database import get_db
from app.dependencies.auth import get_current_user, require_role, require_any_role
from app.models.enums import TechniqueStatus
from app.models.technique import Technique
from app.models.user import User
from app.schemas.technique import (
TechniqueCreate,
TechniqueOut,
TechniqueSummary,
TechniqueUpdate,
)
from app.services.audit_service import log_action
from app.services.d3fend_import_service import get_defenses_for_technique
router = APIRouter(prefix="/techniques", tags=["techniques"])
# ---------------------------------------------------------------------------
# GET /techniques — list (with optional filters)
# ---------------------------------------------------------------------------
@router.get("", response_model=list[TechniqueSummary])
def list_techniques(
tactic: str | None = Query(None, description="Filter by tactic name"),
status_global: TechniqueStatus | None = Query(
None, alias="status", description="Filter by global status"
),
review_required: bool | None = Query(None, description="Filter by review flag"),
db: Session = Depends(get_db),
current_user: User = Depends(get_current_user),
):
"""Return a lightweight list of techniques, optionally filtered."""
query = db.query(Technique)
if tactic is not None:
query = query.filter(Technique.tactic == tactic)
if status_global is not None:
query = query.filter(Technique.status_global == status_global)
if review_required is not None:
query = query.filter(Technique.review_required == review_required)
return query.order_by(Technique.mitre_id).all()
# ---------------------------------------------------------------------------
# GET /techniques/{mitre_id} — detail (with tests)
# ---------------------------------------------------------------------------
@router.get("/{mitre_id}")
def get_technique(
mitre_id: str,
db: Session = Depends(get_db),
current_user: User = Depends(get_current_user),
):
"""Return full details for a single technique, including its tests and D3FEND defenses."""
technique = (
db.query(Technique)
.options(joinedload(Technique.tests))
.filter(Technique.mitre_id == mitre_id)
.first()
)
if technique is None:
raise HTTPException(
status_code=status.HTTP_404_NOT_FOUND,
detail=f"Technique {mitre_id} not found",
)
# Build response dict manually to include D3FEND defenses
defenses = get_defenses_for_technique(db, technique.id)
return {
"id": str(technique.id),
"mitre_id": technique.mitre_id,
"name": technique.name,
"description": technique.description,
"tactic": technique.tactic,
"platforms": technique.platforms or [],
"mitre_version": technique.mitre_version,
"mitre_last_modified": technique.mitre_last_modified,
"is_subtechnique": technique.is_subtechnique,
"parent_mitre_id": technique.parent_mitre_id,
"status_global": technique.status_global.value if technique.status_global else "not_evaluated",
"review_required": technique.review_required,
"last_review_date": technique.last_review_date,
"tests": [
{
"id": str(t.id),
"name": t.name,
"state": t.state.value if t.state else None,
"result": t.result.value if t.result else None,
"platform": t.platform,
"created_at": t.created_at.isoformat() if t.created_at else None,
}
for t in technique.tests
],
"d3fend_defenses": defenses,
}
# ---------------------------------------------------------------------------
# POST /techniques — create (admin only)
# ---------------------------------------------------------------------------
@router.post(
"",
response_model=TechniqueOut,
status_code=status.HTTP_201_CREATED,
)
def create_technique(
payload: TechniqueCreate,
db: Session = Depends(get_db),
current_user: User = Depends(require_role("admin")),
):
"""Create a new technique manually."""
# Ensure mitre_id is unique
existing = (
db.query(Technique).filter(Technique.mitre_id == payload.mitre_id).first()
)
if existing is not None:
raise HTTPException(
status_code=status.HTTP_409_CONFLICT,
detail=f"Technique with mitre_id '{payload.mitre_id}' already exists",
)
technique = Technique(**payload.model_dump())
db.add(technique)
db.commit()
db.refresh(technique)
log_action(
db,
user_id=current_user.id,
action="create_technique",
entity_type="technique",
entity_id=technique.id,
details={"mitre_id": technique.mitre_id, "name": technique.name},
)
return technique
# ---------------------------------------------------------------------------
# PATCH /techniques/{mitre_id} — update (admin only)
# ---------------------------------------------------------------------------
@router.patch("/{mitre_id}", response_model=TechniqueOut)
def update_technique(
mitre_id: str,
payload: TechniqueUpdate,
db: Session = Depends(get_db),
current_user: User = Depends(require_role("admin")),
):
"""Update one or more fields of an existing technique."""
technique = (
db.query(Technique).filter(Technique.mitre_id == mitre_id).first()
)
if technique is None:
raise HTTPException(
status_code=status.HTTP_404_NOT_FOUND,
detail=f"Technique {mitre_id} not found",
)
update_data = payload.model_dump(exclude_unset=True)
for field, value in update_data.items():
setattr(technique, field, value)
db.commit()
db.refresh(technique)
log_action(
db,
user_id=current_user.id,
action="update_technique",
entity_type="technique",
entity_id=technique.id,
details={"mitre_id": mitre_id, "updated_fields": list(update_data.keys())},
)
return technique
# ---------------------------------------------------------------------------
# PATCH /techniques/{mitre_id}/review — mark as reviewed (leads + admin)
# ---------------------------------------------------------------------------
@router.patch("/{mitre_id}/review", response_model=TechniqueOut)
def review_technique(
mitre_id: str,
db: Session = Depends(get_db),
current_user: User = Depends(require_any_role("red_lead", "blue_lead")),
):
"""Mark a technique as reviewed.
Sets ``review_required`` to *False* and records the current timestamp
in ``last_review_date``.
"""
technique = (
db.query(Technique).filter(Technique.mitre_id == mitre_id).first()
)
if technique is None:
raise HTTPException(
status_code=status.HTTP_404_NOT_FOUND,
detail=f"Technique {mitre_id} not found",
)
technique.review_required = False
technique.last_review_date = datetime.utcnow()
db.commit()
db.refresh(technique)
log_action(
db,
user_id=current_user.id,
action="review_technique",
entity_type="technique",
entity_id=technique.id,
details={"mitre_id": mitre_id},
)
return technique