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Middleware - Oauth2

The OAuth 2.0 authorization framework is a protocol that allows a user to grant a third-party web site or application access to the user's protected resources, without necessarily revealing their long-term credentials or even their identity.

Starlette middleware for authentication through oauth2's via a secret key, which is often used to add authentication and authorization to a web application that interacts with an API on behalf of the user.

Thats why AuthX provide a Configuration MiddlewareOauth2 to configure the OAuth2 middleware.

from authx import MiddlewareOauth2

Lets take a look at the example:

class AuthenticateMiddleware(MiddlewareOauth2):
    PUBLIC_PATHS = {"/public"}

Here we are using the MiddlewareOauth2 class to configure the OAuth2 middleware, and we are using the PUBLIC_PATHS attribute to define the paths that are not protected by the middleware, or we can say that the paths that are not protected by the middleware are public.

So for example if we run the application on http://localhost:5001/public, we will see that we are not authenticated.

And This feature is very useful when we want to protect some of the paths of the application, but we want to allow the public to access those paths.

This Feature can be used in both a FastAPI application and a Starlette application, cause mostly its depend on starlette, but we can use it in a FastAPI application as well.

➡️ Example