feat: émettrice SSO draco_session — cookie partagé .dracodev.net, renouvellement et révocation (#216)

backend/auth/router.py

@@ -11,6 +11,7 @@ import re
 from fastapi import APIRouter, Body, Depends, HTTPException, Request, Response
 from pydantic import BaseModel, validator
 
+from backend import draco_session
 from backend.ratelimit import is_account_rate_limited, is_rate_limited
 from backend.ratelimit import record_account_failure as rl_record_account_failure
 from backend.ratelimit import record_account_success as rl_record_account_success
@@ -280,6 +281,11 @@ def _issue_tokens(user: dict, username: str, remember_me: bool, response: Respon
         secure=secure,
         path="/",
     )
+    # Fusion ACC-3.1 (#216) : ObsiGate est l'émettrice SSO — chaque
+    # émission de jetons natifs s'accompagne du cookie partagé
+    # draco_session (inerte tant que DRACO_SESSION_SECRET n'est pas
+    # configuré).
+    draco_session.set_cookie(response, user, secure)
     return {
         "access_token": access_token,
         # OAuth2 token_type, pas un mot de passe (B105) :
@@ -396,6 +402,19 @@ async def logout(
             except Exception:
                 pass
 
+    # Fusion ACC-3.1 (#216) : déconnexion globale — révoquer le jti du
+    # cookie partagé et effacer le cookie sur le domaine parent.
+    draco_tok = request.cookies.get(draco_session.COOKIE_NAME)
+    if draco_tok:
+        draco_claims = draco_session.decode_claims(draco_tok)
+        if draco_claims and draco_claims.get("jti"):
+            try:
+                draco_session.revoke(str(draco_claims["jti"]),
+                                     int(draco_claims.get("exp", 0)))
+            except Exception:
+                pass
+    draco_session.clear_cookie(response)
+
     response.delete_cookie("refresh_token", path="/api/auth/refresh")
     response.delete_cookie("access_token", path="/")
     response.delete_cookie("access_token", path="/api")  # just in case