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"""Functions to check for authorisation."""
from functools import wraps
from typing import Callable
from flask import g, current_app as app
from gn3.auth import db
from . import privileges as auth_privs
def authorised_p(
privileges: tuple[str],
error_message: str = (
"You lack authorisation to perform requested action")):
"""Authorisation decorator."""
assert len(privileges) > 0, "You must provide at least one privilege"
def __build_authoriser__(func: Callable):
@wraps(func)
def __authoriser__(*args, **kwargs):
if hasattr(g, "user_id") and g.user_id:
with db.connection(app.config["AUTH_DB"]) as conn:
user_privileges = tuple(
priv.privilege_name for priv in
auth_privs.user_privileges(conn, g.user_id))
not_assigned = [
priv for priv in privileges if priv not in user_privileges]
if len(not_assigned) == 0:
return func(*args, **kwargs)
return {
"status": "error",
"message": f"Unauthorised: {error_message}"
}
return __authoriser__
return __build_authoriser__
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