To do it, let's use the fixture below, and by the way, I already included three kinds of tokens so we can use them in our. Looking at its implementation, I could understand its internal process and see where we could return the JWKS using a mock. The library PyJWT requires it to verify the token. To test this scenario, we'll need a JWT, and we can generate as many as we want in Token DEV. AuthenticationFailed ( "Bearer does not contain a valid JWT" ) raise NotImplementedError Raise error if the provided token has no key ID get_signing_key_from_jwt (raw_jwt ) except DecodeError : raise exceptions. AuthenticationFailed ( "Authorization header must start with Bearer followed by its token" ) match (header_authorization_value ) if not match : raise exceptions. AuthenticationFailed ( "Authorization header is not present" ) # Extract supposed raw JWT
get ( "authorization" ) if not header_authorization_value : raise exceptions. AUTH0_TENANT_JWKS ) def authenticate (self, request : HttpRequest ) : # Extract header compile ( r"^earer (.*)$" ) def _init_ (self, *args, **kwargs ) : authenticate() method.įrom rest_framework import authenticationįrom authentication_django_rest_framework import settingsĬlass JWTAccessTokenAuthentication (authentication. In some circumstances instead of returning None, you may want to raise an AuthenticationFailed exception from the. The method should return a two-tuple of (user, auth) if authentication succeeds, or None otherwise. To implement a custom authentication scheme, subclass BaseAuthentication and override the. Raise a 401 error if anything different occurs.If the token is valid, proceed with the request returning its details.Consult the authorization header and then analyze the value of the bearer token.Retrieve and store the JSON Web Key Set (JWKS) as it contains the public keys used to verify any JWT issued by the authorization server.The custom authentication mechanism must be able to: Let's use it as an example to create ours 😁! What we need to do Exploring the project, I discovered an experimental feature called JWTTokenUserAuthentication backend. It's fantastic, but unfortunately, it has too many features. As I'm using Auth0 as the identity provider, only validation is required, nothing more. In this case, I tried to find one to handle the JWT validation. So, before coding anything, I try to find an open-source project to handle my problem. This is even more true when using a mature framework such as Django. My focus should be on business code, not on infrastructure, let's say. The title describes what I do when creating a project from scratch. If there is a framework, then someone has already solved your issue. But know this: every time you're feeling you're reinventing the wheel, maybe you're doing it the wrong way. Our situation is quite evident because of this post's purpose: we will talk about Authentication. Another interesting tip is looking at other projects, and Auth0 has many samples. So, where should JWT validation be implemented? A good hint is that we want to authenticate the JWT to guarantee it's a valid one. DRF has an excellent API guide for this sole purpose: It doesn't matter which framework you are using it's crucial to understand its API to configure your project without mistakes.
Django rest framework auth0 how to#
An essential factor appears when you need one: how to properly validate a JWT to accept an incoming request on your backend? Auth0 explains what you need to do, but how to achieve it using Django Rest Framework? Where should JWT validation be implemented in DRF? Unfortunately, that example does not have a resource server. In my last article, I described how Auth0 Deploy CLI works with a practical example. Seeing the authentication class in action.Things you should handle, but we didn't cover.Raise error if the provided token has an invalid signature.Raise error if the provided token has no key ID.Raise error if the bearer has an invalid JWT in terms of its format.Raise error if the authorization header value is invalid.Raise error if no authorization header is available.
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