205 lines
8.0 KiB
Python
205 lines
8.0 KiB
Python
from __future__ import annotations
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from dataclasses import dataclass
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from fastapi import Depends, HTTPException, status
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from fastapi.security import HTTPAuthorizationCredentials, HTTPBearer
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from sqlalchemy import select
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from sqlalchemy.orm import Session, selectinload
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from app.core.access import (
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INTERNAL_USER_SUBJECT,
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INTERNAL_USER_TENANT_ID,
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get_user_permissions,
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permissions_to_module_map,
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)
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from app.core.security import verify_token
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from app.db.session import get_db
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from app.models.access import Role, User
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from app.models.client_access import ClientFeatureAccess, ClientUser
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from app.services.client_access_service import has_access_level, module_access_map
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bearer_scheme = HTTPBearer(auto_error=False)
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@dataclass(frozen=True)
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class AuthSession:
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role: str
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email: str
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name: str
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tenant_id: str | None = None
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client_role: str | None = None
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user_id: int | None = None
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client_account_id: int | None = None
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module_permissions: dict[str, str] | None = None
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def _build_internal_auth_session(db: Session, payload: dict) -> AuthSession:
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"""Translate an internal-user token into an AuthSession the shared route
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dependencies can consume. Internal users present `role="internal"` so
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`require_client_module_access` can spot them and skip the ClientUser DB
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lookup, deriving their module_permissions from the role-permission table.
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"""
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user_id = payload.get("user_id")
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if not isinstance(user_id, int):
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raise HTTPException(status_code=status.HTTP_401_UNAUTHORIZED, detail="Invalid authentication token")
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user = db.scalar(
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select(User)
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.where(User.id == user_id)
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.options(selectinload(User.role).selectinload(Role.permissions))
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)
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if user is None:
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raise HTTPException(status_code=status.HTTP_401_UNAUTHORIZED, detail="User no longer exists")
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if not user.is_active:
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raise HTTPException(status_code=status.HTTP_403_FORBIDDEN, detail="User is inactive")
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return AuthSession(
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role="internal",
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email=user.email,
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name=user.name,
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tenant_id=INTERNAL_USER_TENANT_ID,
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client_role=user.role.name if user.role else None,
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user_id=user.id,
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client_account_id=None,
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module_permissions=permissions_to_module_map(get_user_permissions(user)),
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)
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def get_auth_session(
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credentials: HTTPAuthorizationCredentials | None = Depends(bearer_scheme),
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db: Session = Depends(get_db),
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) -> AuthSession:
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if credentials is None:
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raise HTTPException(status_code=status.HTTP_401_UNAUTHORIZED, detail="Authentication required")
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payload = verify_token(credentials.credentials)
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# Internal Hunter Stock Feeds users get an auth session derived from the
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# role/permission tables rather than the client-portal ClientUser tables.
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if payload.get("sub") == INTERNAL_USER_SUBJECT:
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return _build_internal_auth_session(db, payload)
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return AuthSession(
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role=str(payload.get("role", "")),
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email=str(payload.get("email", "")),
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name=str(payload.get("name", "")),
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tenant_id=payload.get("tenant_id"),
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client_role=payload.get("client_role"),
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user_id=payload.get("user_id"),
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client_account_id=payload.get("client_account_id"),
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module_permissions={},
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)
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def require_client_session(session: AuthSession = Depends(get_auth_session)) -> AuthSession:
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# Internal Hunter Stock Feeds users share the workspace with client users
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# but don't have a ClientUser row, so we accept them here and let
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# `require_client_module_access` enforce the per-module checks.
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if session.role == "internal":
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if not session.tenant_id or not session.user_id:
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raise HTTPException(status_code=status.HTTP_403_FORBIDDEN, detail="Internal user context is missing")
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return session
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if session.role != "client":
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raise HTTPException(status_code=status.HTTP_403_FORBIDDEN, detail="Client access required")
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if not session.tenant_id:
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raise HTTPException(status_code=status.HTTP_403_FORBIDDEN, detail="Client tenant is missing")
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if not session.user_id or not session.client_account_id:
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raise HTTPException(status_code=status.HTTP_403_FORBIDDEN, detail="Client user context is missing")
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return session
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def require_admin_session(session: AuthSession = Depends(get_auth_session)) -> AuthSession:
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if session.role != "admin":
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raise HTTPException(status_code=status.HTTP_403_FORBIDDEN, detail="Admin access required")
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return session
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def load_current_client_user(db: Session, session: AuthSession) -> ClientUser:
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user = db.scalar(
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select(ClientUser)
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.where(
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ClientUser.id == session.user_id,
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ClientUser.client_account_id == session.client_account_id,
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ClientUser.tenant_id == session.tenant_id,
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)
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.options(selectinload(ClientUser.module_permissions))
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)
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if user is None:
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raise HTTPException(status_code=status.HTTP_403_FORBIDDEN, detail="Client user access is no longer valid")
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if user.status == "suspended":
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raise HTTPException(status_code=status.HTTP_403_FORBIDDEN, detail="Client user access is suspended")
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return user
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def require_client_module_access(module_key: str, minimum_level: str = "view"):
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def dependency(
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session: AuthSession = Depends(require_client_session),
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db: Session = Depends(get_db),
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) -> AuthSession:
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# Internal users have their permissions baked into the AuthSession at
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# token-resolve time; skip the ClientUser/feature DB lookups and check
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# the in-memory module_permissions map directly.
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if session.role == "internal":
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permissions = session.module_permissions or {}
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if not has_access_level(permissions.get(module_key), minimum_level):
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raise HTTPException(
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status_code=status.HTTP_403_FORBIDDEN,
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detail=f"{module_key} access is not permitted",
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)
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return session
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user = load_current_client_user(db, session)
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feature = db.scalar(
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select(ClientFeatureAccess).where(
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ClientFeatureAccess.client_account_id == user.client_account_id,
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ClientFeatureAccess.tenant_id == user.tenant_id,
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ClientFeatureAccess.feature_key == module_key,
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)
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)
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if feature is not None and not feature.enabled:
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raise HTTPException(status_code=status.HTTP_403_FORBIDDEN, detail=f"{module_key} is disabled for this client")
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permissions = module_access_map(user)
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if not has_access_level(permissions.get(module_key), minimum_level):
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raise HTTPException(status_code=status.HTTP_403_FORBIDDEN, detail=f"{module_key} access is not permitted")
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return AuthSession(
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role=session.role,
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email=session.email,
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name=session.name,
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tenant_id=session.tenant_id,
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client_role=user.role,
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user_id=user.id,
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client_account_id=user.client_account_id,
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module_permissions=permissions,
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)
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return dependency
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def require_client_access_manager_session(
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session: AuthSession = Depends(get_auth_session),
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db: Session = Depends(get_db),
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) -> AuthSession:
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if session.role == "admin":
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return session
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if session.role != "client":
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raise HTTPException(status_code=status.HTTP_403_FORBIDDEN, detail="Client access management requires admin or superadmin access")
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user = load_current_client_user(db, require_client_session(session))
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permissions = module_access_map(user)
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if user.role != "superadmin" or not has_access_level(permissions.get("client_access"), "manage"):
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raise HTTPException(status_code=status.HTTP_403_FORBIDDEN, detail="Superadmin client access is required")
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return AuthSession(
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role=session.role,
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email=session.email,
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name=session.name,
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tenant_id=session.tenant_id,
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client_role=user.role,
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user_id=user.id,
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client_account_id=user.client_account_id,
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module_permissions=permissions,
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)
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