63 lines
1.6 KiB
Python
63 lines
1.6 KiB
Python
"""
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Module specific business logic for the auth module
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Exports:
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- claims_dependency: Dict[str, Any] containing OIDC claims and database ID
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"""
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import json
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import requests
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from typing import Annotated, Any
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from joserfc import jwt
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from joserfc.errors import ExpiredTokenError
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from joserfc.jwk import KeySet
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from urllib.request import urlopen
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from fastapi import Depends
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from fastapi.security import OpenIdConnect
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from src.auth.exceptions import UnauthorizedException
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from src.auth.config import auth_settings
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from src.user.service import add_user_to_db
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from src.database import db_dependency
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oidc = OpenIdConnect(openIdConnectUrl=auth_settings.OIDC_CONFIG)
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oidc_dependency = Annotated[str, Depends(oidc)]
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def get_dev_user():
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return {"db_id": 1, "email": "chris@sr2.uk"}
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async def get_current_user(
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oidc_auth_string: oidc_dependency, db: db_dependency
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) -> dict[str, Any]:
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config_url = urlopen(auth_settings.OIDC_CONFIG)
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config = json.loads(config_url.read())
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jwks_uri = config["jwks_uri"]
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key_response = requests.get(jwks_uri)
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jwk_keys = KeySet.import_key_set(key_response.json())
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claims_options = {
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"exp": {"essential": True},
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"iss": {"essential": True, "value": auth_settings.OIDC_ISSUER},
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}
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token = jwt.decode(oidc_auth_string.replace("Bearer ", ""), jwk_keys)
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claims_requests = jwt.JWTClaimsRegistry(**claims_options)
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try:
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claims_requests.validate(token.claims)
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except ExpiredTokenError:
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raise UnauthorizedException(message="Token is expired")
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db_id = await add_user_to_db(db, token.claims)
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token.claims["db_id"] = db_id
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return token.claims
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claims_dependency = Annotated[dict[str, Any], Depends(get_current_user)]
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