drf-simple-oauth2 1.0.4

Simple OAuth2 client package allowing to define OAuth2 / OpenID providers through settings.

DRF Simple OAuth2

DRF Simple OAuth2 is an OAuth2/OpenID Connect client for Django REST Framework. It lets you define one or many providers entirely via settings.

You can view the full documentation at https://drf-simple-oauth2.readthedocs.io/en/latest/.

Features

• Provides endpoints for the OAuth2 Authorization Code flow.
• Supports multiple OAuth2/OpenID providers at once.
• Supports PKCE (Proof Key for Code Exchange).
• Customize the user creation/update logic using the information retrieved from the provider.

Requirements

drf-simple-oauth2 supports the officially supported versions of its dependencies (mainstream & LTS):

• Python — see the supported versions.
• Django — see the supported versions.

Installation

Install via pip:

pip install drf-simple-oauth2

Add the app:

INSTALLED_APPS = [
    ...
    "simple_oauth2",
    ...
]

Include URLs in your project’s urls.py:

from django.urls import include, path

urlpatterns = [
    ...
    path("", include("simple_oauth2.urls", namespace="simple_oauth2")),
    ...
]

Configuration

Define SIMPLE_OAUTH2 in your Django settings:

SIMPLE_OAUTH2 = {
    "auth0": {
        "CLIENT_ID": "<your-auth0-client-id>",
        "CLIENT_SECRET": "<your-auth0-client-secret>",
        "BASE_URL": "<your-auth0-domain>.<region>.auth0.com",
        "REDIRECT_URI": "http://localhost:8080/app/auth0/callback",
        "POST_LOGOUT_REDIRECT_URI": "http://localhost:8080/app",
    },
    "google": {
        "CLIENT_ID": "<your-google-client-id>",
        "CLIENT_SECRET": "<your-google-client-secret>",
        "BASE_URL": "accounts.google.com",
        "REDIRECT_URI": "http://localhost:8080/app/google/callback",
        "POST_LOGOUT_REDIRECT_URI": "http://localhost:8080/app",
    },
}

See the documentation for all available settings.

Usage

The following assumes you mounted simple_oauth2 URLs at the empty path ("") as shown above.

The flow below describes interactions between a frontend (App), a backend (API), and an OAuth2/OpenID provider (Provider). You can find a more detailed explanation in the documentation.

1) Redirect the user to the provider

Request the provider-specific authorization URL from your API, then redirect the browser to it:

GET http://localhost:8000/oauth2/url/?provider=auth0

{
  "url": "https://example.com/authorize?response_type=code&client_id=client&scope=openid+profile+email&nonce=085c979c02ecb914a4c6210ad1902037825c18fe8d9b0a1ca0daae113b7747035170e9400c6ec5c7439e1caa3249cc20d52975b34777778c2949f63a14accfb0&state=9143617326b20fa6b3f436001096f5365e1ccb2689becc75091399fb3b3b4f834333f4dada0c44b2d167326d6ddc279698a0b05a0720c45620b8696e944101c4&redirect_uri=https%3A%2F%2Fexample.com%2Fcallback&code_challenge=vo8kwt0Nrf.jfMj8HmMGKJeGJH8SFY8bVhKidrQkg7q2IeW~nfRrdlM4QosTTgjMnMmyzVAC3i5n.lOPx0NJvgB1G7~FSaDVwhTFM-UehPrp6~~lht6jbLVs-9Tlxsld&code_challenge_method=plain"
}

After consent, the provider redirects back to your App at REDIRECT_URI with code and state parameters.

2) Exchange the code at your API

POST the code and state to your API:

POST http://localhost:8000/oauth2/token/
{
  "provider": "auth0",
  "code": "<code>",
  "state": "<state>"
}

{
  "api": {
    "access": "<access_token>",
    "refresh": "<refresh_token>"
  },
  "provider": {
    "access_token": "<access_token>",
    "id_token": "<id_token>",
    "refresh_token": "<refresh_token>",
    "logout_url": "https://example.com/v2/logout?..."
  }
}

Note: refresh_token may be absent depending on the provider configuration.

The response payload is generated by TOKEN_PAYLOAD_HANDLER, which issues JWTs via djangorestframework-simplejwt and returns the provider’s tokens.
The api object contains tokens for authenticating against your API; the provider object contains tokens for the provider.

Calling /oauth2/token/ will also ensure a user exists in your database. This is handled by TOKEN_USERINFO_HANDLER (defaults to simple_oauth2.utils.get_user). It first tries to match a user via the sub claim from the ID Token; otherwise, it uses claims/UserInfo to retrieve or create a user.

You can customize both behaviors per provider via the TOKEN_PAYLOAD_HANDLER and TOKEN_USERINFO_HANDLER` settings.

3) Logout

To log out from both your API and the provider:

1. Log the user out from your API.
2. Redirect the user to the logout_url returned in the provider object from /oauth2/token/.

The provider will redirect back to your App using POST_LOGOUT_REDIRECT_URI.