94 lines
3.3 KiB
Python
94 lines
3.3 KiB
Python
from functools import wraps
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from typing import Optional, Tuple
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from graphql.type import GraphQLResolveInfo
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from sqlalchemy.orm import joinedload, exc
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from starlette.authentication import AuthenticationBackend
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from starlette.requests import HTTPConnection
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from auth.credentials import AuthCredentials, AuthUser
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from services.db import local_session
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from orm.user import User, Role
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from settings import SESSION_TOKEN_HEADER
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from auth.tokenstorage import SessionToken
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from services.exceptions import OperationNotAllowed
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class JWTAuthenticate(AuthenticationBackend):
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async def authenticate(
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self, request: HTTPConnection
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) -> Optional[Tuple[AuthCredentials, AuthUser]]:
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if SESSION_TOKEN_HEADER not in request.headers:
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return AuthCredentials(scopes={}), AuthUser(user_id=None, username="")
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token = request.headers.get(SESSION_TOKEN_HEADER)
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if not token:
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print("[auth.authenticate] no token in header %s" % SESSION_TOKEN_HEADER)
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return AuthCredentials(scopes={}, error_message=str("no token")), AuthUser(
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user_id=None, username=""
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)
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if len(token.split(".")) > 1:
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payload = await SessionToken.verify(token)
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with local_session() as session:
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try:
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user = (
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session.query(User)
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.options(
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joinedload(User.roles).options(
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joinedload(Role.permissions)
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),
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joinedload(User.ratings),
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)
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.filter(User.id == payload.user_id)
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.one()
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)
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scopes = {} # TODO: integrate await user.get_permission()
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return (
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AuthCredentials(
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user_id=payload.user_id, scopes=scopes, logged_in=True
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),
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AuthUser(user_id=user.id, username=""),
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)
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except exc.NoResultFound:
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pass
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return AuthCredentials(scopes={}, error_message=str("Invalid token")), AuthUser(
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user_id=None, username=""
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)
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def login_required(func):
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@wraps(func)
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async def wrap(parent, info: GraphQLResolveInfo, *args, **kwargs):
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# print('[auth.authenticate] login required for %r with info %r' % (func, info)) # debug only
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auth: AuthCredentials = info.context["request"].auth
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# print(auth)
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if not auth or not auth.logged_in:
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# raise Unauthorized(auth.error_message or "Please login")
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return {"error": "Please login first"}
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return await func(parent, info, *args, **kwargs)
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return wrap
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def permission_required(resource, operation, func):
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@wraps(func)
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async def wrap(parent, info: GraphQLResolveInfo, *args, **kwargs):
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print(
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"[auth.authenticate] permission_required for %r with info %r" % (func, info)
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) # debug only
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auth: AuthCredentials = info.context["request"].auth
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if not auth.logged_in:
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raise OperationNotAllowed(auth.error_message or "Please login")
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# TODO: add actual check permission logix here
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return await func(parent, info, *args, **kwargs)
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return wrap
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