From 3b53478135e238c1a5ecc5d619b6051396804f7e Mon Sep 17 00:00:00 2001 From: Torben Meyer Date: Fri, 23 Feb 2024 08:51:59 +0100 Subject: [PATCH] Add support for PKCE Implementation based on https://docs.authlib.org/en/latest/client/oauth2.html#add-pkce-for-authorization-code --- keycloak/oauth.py | 7 ++++- poetry.lock | 80 +++++++++++++++++++++++------------------------ 2 files changed, 46 insertions(+), 41 deletions(-) diff --git a/keycloak/oauth.py b/keycloak/oauth.py index 1550e02..cd90d7a 100644 --- a/keycloak/oauth.py +++ b/keycloak/oauth.py @@ -1,5 +1,6 @@ from typing import Any import pydantic +from authlib.common.security import generate_token from authlib.integrations.starlette_client import OAuth, StarletteOAuth2App from authlib.jose import JWTClaims, JsonWebToken, JsonWebKey @@ -28,6 +29,7 @@ def __init__( base_url: str = "/", logout_target: str = "/", ) -> None: + self.code_verifier = generate_token(48) self._base_url = base_url self._logout_page = logout_target oauth = OAuth() @@ -38,6 +40,7 @@ def __init__( client_secret=client_secret, server_metadata_url=server_metadata_url, client_kwargs=client_kwargs, + code_challenge_method="S256", ) assert isinstance(oauth.keycloak, StarletteOAuth2App) self.keycloak = oauth.keycloak @@ -62,7 +65,9 @@ async def login_page( ) if next := request.query_params.get("next"): redirect_uri = redirect_uri.include_query_params(next=next) - return await self.keycloak.authorize_redirect(request, redirect_uri) + return await self.keycloak.authorize_redirect( + request, redirect_uri, code_verifier=self.code_verifier + ) async def auth(self, request: Request) -> RedirectResponse: """Authorize user with Keycloak access token.""" diff --git a/poetry.lock b/poetry.lock index 323be79..b4bd00e 100644 --- a/poetry.lock +++ b/poetry.lock @@ -145,43 +145,43 @@ files = [ [[package]] name = "cryptography" -version = "42.0.3" +version = "42.0.4" description = "cryptography is a package which provides cryptographic recipes and primitives 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