How to build a Rails REST API with 2-legged OAuth? - ruby-on-rails

I've been struggling for two days with OAuth and RSpec to get a properly tested RESTful API using a 2-legged OAuth authentication so I thought about posting it here and prevent more pain to happen.
So here it is, in the answer.

I've built an example app. See it there : https://github.com/jerefrer/oauth-two-legged-restful-api

Related

Doorkeeper, OAuth, JWT with Rails

I've already looked at dedicated Rails casts here and
there, as well some Rails API tutorials with JWT here and there and here. Unfortunately, most of them are too outdated (2011-2015).
Nevertheless, I'm a still a little bit lost what to choose between oauth2, omniauth-oauth2, ruby-jwt
and in which situation and how to glue all these bricks together.
To be short, I need to authenticate Users via an external corporate API, get JWT token and be able to decode it to extract User information
before let him enter the Rails application.
What should I do:
create a custom strategy ?
will this custom strategy work with the corporate authentication API
if it does not use Doorkeeper ?
Some recent links would be really appreciated.
I see that you want to use Open Id Connect mechanism, which Identity Provider (IdP) will return id_token (JWT format) to client. That mechanism is already implemented here: https://github.com/doorkeeper-gem/doorkeeper-openid_connect. Check it out!

oauth 2.0 integration with peoplesoft

Our existing customer base is in peoplesoft and we are developing lot of mobile applications. Hence, we would like to use oauth 2.0 for authentication and authorization, but i cannot find any way to integrate the two.
Does PS implement OAuth? If they don't then you'll be out of luck. A quick search indicates they support SAML for SSO (on their web sites). You will probably have to describe a little bit more what you are doing, and why you think OAuth is the way to go.
Note that being mobile doesn't necessarily mean you have to implement OAuth.
This is a very late answer, but as of PeopleTools 8.58, PeopleSoft applications support OAuth2 for REST services. The caveat is that only Oracle IDCS is able to be used as an authorization server. There may be a plan in the future to support other authorization servers.
Cf. https://blogs.oracle.com/peopletools/what-peoplesoft-is-doing-with-oauth2-in-858 and https://support.oracle.com/knowledge/PeopleSoft%20Enterprise/2621182_1.html for more information.

Securing Flask-Restful API with OAuth2

Okay, so I wrote an API using Flask-Restful and now I want to implement OAuth2 authorization.
I've tried pyoauth2, but it's undocumented and the tutorial is quite complicated.
So, my question is: How do I do that?
Follow the flask-oauthlib guide to get a basic endpoint set up. Ensure that it works with a vanilla flask endpoint.
Configure your API to use the oauth decorator.
oauth = OAuth2Provider(app)
api = restful.Api(app, decorators=[oauth.require_oauth('email')])

Building an API with/without OAuth and OpenID

I need to develop an API to be the core of a web APP.
My initial idea was making a REST API that would treat all the request and then create some clients for web, mobile and desktop.
My question is, How should I manage the authentication for this situation?
I thought about using a token that would be passed with all requests to the REST API.
Im my case, I would not like to have something like OAuth because the ecosystem will not have multiple apps like Facebook/Twitter does.
NOTE: I must have the API separated from the client for web.
In more details, I would request POST /users/auth passing their password and username, and receive an auth token.
Is it a good approach or there is something better?
Agree that Devise is great for the auth in the application. For the API level, 3scale could help a lot (http://www.3scale.net) - it takes care of rate limits, keys, oauth secret distribution, analytics, developer portal and other stuff. There's a ruby plugin to get started here: https://github.com/3scale/3scale_ws_api_for_ruby.
Devise is a fantastic gem that handles authentication in rails apps. It also provides token based authentication. You can find many resources on the web (for example here) explainig how to use it. No doubt it will fit for your situation.

Two-legged oauth with dotnetopenauth 4.0 problems

I've seen this Two legged OAuth using DotNetOpenAuth but it doesn't provide any details on how to remove one of the legs.
I am finding the code quite hard get my head around (using DotNetOpenAuth 4.0). Can anyone give me any pointers on how to modify the samples to do a two-legged auth?
From the service provider, it is a simple matter of authorizing the request token immediately before before returning what normally is an unauthorized request token. Since the service provider already has to provide code to generate and store request tokens, this should be straightforward.
From the consumer, it's simply that you skip the redirect step. There's a sample of this in the OAuthConsumer samples' GoogleApps2Legged.aspx code-behind.
Take a look at this post, it explains how to implement a 2 Legged OAuth using DotNetOpenAuth 4 with a Google Apps consumer key + secret.
Google Calendar V3 2 Legged authentication fails
Hope it will helps you :)

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