128 lines
4.3 KiB
Python
128 lines
4.3 KiB
Python
from typing import Optional
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from fastapi import Depends, HTTPException, status
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from starlette.requests import Request
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from fastapi.security import OAuth2PasswordBearer
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from jose import jwt, JWTError
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from sqlalchemy.ext.asyncio import AsyncSession
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from sqlalchemy import select
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from pydantic import ValidationError
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from app.core.database import get_db
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from app.core.security import security
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from app.core.config import get_settings
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from app.models.user import User, UserRole
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from app.models.tenant import Tenant
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settings = get_settings()
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# Esquema OAuth2 centralizado — auth.py importa desde aquí
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# Soporta: 1) Authorization: Bearer header (Swagger/API clients)
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# 2) Cookie access_token HttpOnly (apps web)
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_bearer_scheme = OAuth2PasswordBearer(
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tokenUrl=f"/{settings.API_VERSION}/auth/login",
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auto_error=False,
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)
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async def oauth2_scheme(
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request: Request,
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bearer_token: Optional[str] = Depends(_bearer_scheme),
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) -> str:
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"""Extrae JWT desde header Authorization (prioridad) o cookie del frontend correcto.
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Usa el header X-App para seleccionar la cookie:
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- X-App: internal → solo 'internal_access_token'
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- X-App: client → solo 'client_access_token'
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- sin header → prueba ambas (compatibilidad con Swagger/CLI)
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"""
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if bearer_token:
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return bearer_token
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app_hint = request.headers.get("X-App", "").lower()
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if app_hint == "internal":
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token = request.cookies.get("internal_access_token")
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elif app_hint == "client":
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token = request.cookies.get("client_access_token")
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else:
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# Fallback para Swagger, tests y clientes sin header
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token = (
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request.cookies.get("internal_access_token")
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or request.cookies.get("client_access_token")
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)
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if not token:
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raise HTTPException(
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status_code=status.HTTP_401_UNAUTHORIZED,
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detail="Not authenticated",
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headers={"WWW-Authenticate": "Bearer"},
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)
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return token
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async def get_current_user(
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request: Request,
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token: str = Depends(oauth2_scheme),
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db: AsyncSession = Depends(get_db)
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) -> User:
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payload = security.verify_token(token)
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if payload is None:
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raise HTTPException(
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status_code=status.HTTP_401_UNAUTHORIZED,
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detail="Could not validate credentials",
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headers={"WWW-Authenticate": "Bearer"},
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)
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user_id: str = payload.get("sub")
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if user_id is None:
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raise HTTPException(
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status_code=status.HTTP_401_UNAUTHORIZED,
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detail="Could not validate credentials",
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headers={"WWW-Authenticate": "Bearer"},
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)
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result = await db.execute(select(User).where(User.id == user_id))
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user = result.scalars().first()
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if user is None:
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raise HTTPException(status_code=404, detail="User not found")
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if not user.is_active:
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raise HTTPException(status_code=400, detail="Inactive user")
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# Enforce that tenant header (if present) matches the authenticated user's tenant.
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# Roles globales (is_global) pueden operar en cualquier tenant → omitir chequeo.
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# Roles de cliente (is_client) deben coincidir con su propio tenant.
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request_tenant_id = getattr(getattr(request, "state", None), "tenant_id", None)
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if request_tenant_id and not user.role.is_global and str(user.tenant_id) != str(request_tenant_id):
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raise HTTPException(
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status_code=status.HTTP_403_FORBIDDEN,
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detail="Tenant header does not match authenticated user",
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)
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return user
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async def get_current_active_superuser(
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current_user: User = Depends(get_current_user),
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) -> User:
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if current_user.role != UserRole.ADMIN:
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raise HTTPException(
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status_code=403, detail="The user doesn't have enough privileges"
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)
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return current_user
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async def get_current_tenant(
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current_user: User = Depends(get_current_user),
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db: AsyncSession = Depends(get_db)
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) -> Tenant:
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"""Obtener el tenant del usuario actual."""
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result = await db.execute(select(Tenant).where(Tenant.id == current_user.tenant_id))
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tenant = result.scalar_one_or_none()
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if not tenant:
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raise HTTPException(
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status_code=status.HTTP_404_NOT_FOUND,
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detail="Tenant not found"
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)
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return tenant
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