luxferre
2b8296d622
org_or_super_admin_dependency can be used in place of org_admin_dependency to also allow super admins.
237 lines
6.9 KiB
Python
237 lines
6.9 KiB
Python
"""
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Module specific business logic for auth module
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Exports:
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- claims_dependency
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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.jwk import KeySet
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from urllib.request import urlopen
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from fastapi import Depends, HTTPException, Path
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from fastapi.security import OpenIdConnect
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from sqlalchemy.sql import exists
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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.organisation.models import OrgUsers, Organisation as Org
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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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async def get_current_user(oidc_auth_string: oidc_dependency) -> 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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"aud": {"essential": True, "value": "account"},
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"iss": {"essential": True, "value": auth_settings.OIDC_ISSUER},
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}
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token = jwt.decode(
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oidc_auth_string.replace("Bearer ", ""),
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jwk_keys
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)
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claims_requests = jwt.JWTClaimsRegistry(**claims_options)
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claims_requests.validate(token.claims)
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db_id = await add_user_to_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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async def is_org_user(claims: claims_dependency, db: db_dependency, org_id: int = Path(gt=0)):
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org_exists = db.query(exists().where(Org.id == org_id)).scalar()
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if not org_exists:
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raise HTTPException(status_code=404, detail="Organisation not found")
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db_id = claims.get("db_id", None)
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if db_id is None:
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raise HTTPException(status_code=404, detail="User not found in db")
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exists_query = (db.query(OrgUsers)
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.filter(OrgUsers.org_id == org_id,
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OrgUsers.user_id == db_id
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).exists()
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)
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org_user_exists = db.query(exists_query).scalar()
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if not org_user_exists:
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raise HTTPException(status_code=401, detail="Not authorised")
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return org_user_exists
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org_user_dependency = Annotated[dict[str, Any], Depends(is_org_user)]
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async def is_org_admin(claims: claims_dependency, db: db_dependency, org_id: int = Path(gt=0)):
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org_exists = db.query(exists().where(Org.id == org_id)).scalar()
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if not org_exists:
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raise HTTPException(status_code=404, detail="Organisation not found")
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db_id = claims.get("db_id", None)
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if db_id is None:
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raise HTTPException(status_code=404, detail="User not found in db")
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exists_query = (db.query(OrgUsers)
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.filter(OrgUsers.org_id == org_id,
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OrgUsers.user_id == db_id,
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OrgUsers.is_admin == True
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).exists()
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)
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org_admin_exists = db.query(exists_query).scalar()
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if not org_admin_exists:
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raise HTTPException(status_code=401, detail="Not authorised")
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return org_admin_exists
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org_admin_dependency = Annotated[dict[str, Any], Depends(is_org_admin)]
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async def is_super_admin(claims: claims_dependency):
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super_admin_ids = []
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db_id = claims.get("db_id", None)
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if db_id is None:
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raise HTTPException(status_code=404, detail="User not found in db")
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if db_id not in super_admin_ids:
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raise HTTPException(status_code=401, detail="Not authorised")
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return True
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super_admin_dependency = Annotated[dict[str, Any], Depends(is_super_admin)]
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async def is_admin(claims: claims_dependency, db: db_dependency, org_id: int = Path(gt=0)):
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try:
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await is_super_admin(claims)
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return True
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except HTTPException as e:
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pass
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try:
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await is_org_admin(claims, db, org_id)
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return True
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except HTTPException as e:
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raise HTTPException(status_code=401, detail="Not authorised")
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org_or_super_admin_dependency = Annotated[dict[str, Any], Depends(is_admin)]
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# Middleware version of user auth
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# import json
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# import logging
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#
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# from threading import Timer
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# from urllib.request import urlopen
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# from starlette.requests import HTTPConnection, Request
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#
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# from authlib.jose.rfc7517.jwk import JsonWebKey
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# from authlib.jose.rfc7517.key_set import KeySet
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# from authlib.oauth2 import OAuth2Error, ResourceProtector
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# from authlib.oauth2.rfc6749 import MissingAuthorizationError
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# from authlib.oauth2.rfc7523 import JWTBearerTokenValidator
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# from authlib.oauth2.rfc7523.validator import JWTBearerToken
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#
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# from starlette.authentication import (
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# AuthCredentials,
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# AuthenticationBackend,
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# AuthenticationError,
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# SimpleUser,
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# )
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#
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# logger = logging.getLogger(__name__)
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#
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#
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# class RepeatTimer(Timer):
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# def __init__(self, *args, **kwargs) -> None:
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# super().__init__(*args, **kwargs)
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# self.daemon = True
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#
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# def run(self):
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# while not self.finished.wait(self.interval):
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# self.function(*self.args, **self.kwargs)
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#
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#
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# class BearerTokenValidator(JWTBearerTokenValidator):
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# def __init__(self, issuer: str, audience: str):
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# self._issuer = issuer
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# self._jwks_uri: str | None = None
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# super().__init__(public_key=self.fetch_key(), issuer=issuer)
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# self.claims_options = {
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# "exp": {"essential": True},
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# "aud": {"essential": True, "value": audience},
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# "iss": {"essential": True, "value": issuer},
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# }
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# self._timer = RepeatTimer(3600, self.refresh)
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# self._timer.start()
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#
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# def refresh(self):
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# try:
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# self.public_key = self.fetch_key()
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# except Exception as exc:
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# logger.warning(f"Could not update jwks public key: {exc}")
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#
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# def fetch_key(self) -> KeySet:
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# """Fetch the jwks_uri document and return the KeySet."""
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# response = urlopen(self.jwks_uri)
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# logger.debug(f"OK GET {self.jwks_uri}")
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# return JsonWebKey.import_key_set(json.loads(response.read()))
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#
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# @property
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# def jwks_uri(self) -> str:
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# """The jwks_uri field of the openid-configuration document."""
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# if self._jwks_uri is None:
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# config_url = urlopen(f"{self._issuer}/.well-known/openid-configuration")
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# config = json.loads(config_url.read())
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# self._jwks_uri = config["jwks_uri"]
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# return self._jwks_uri
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#
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#
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# class BearerTokenAuthBackend(AuthenticationBackend):
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# def __init__(self, issuer: str, audience: str) -> None:
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# rp = ResourceProtector()
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# validator = BearerTokenValidator(
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# issuer=issuer,
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# audience=audience,
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# )
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# rp.register_token_validator(validator)
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# self.resource_protector = rp
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#
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# async def authenticate(self, conn: HTTPConnection):
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# if "Authorization" not in conn.headers:
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# return
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# request = Request(conn.scope)
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# try:
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# token: JWTBearerToken = self.resource_protector.validate_request(
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# scopes=["openid"],
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# request=request,
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# )
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# except (MissingAuthorizationError, OAuth2Error) as error:
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# raise AuthenticationError(error.description) from error
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# scope: str = token.get_scope()
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# scopes = scope.split()
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# scopes.append("authenticated")
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# return AuthCredentials(scopes=scopes), SimpleUser(username=token["email"])
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