Trying to lookup what autoApprove does in spring boot oauth, and there's a question here titled Skip OAuth user approval in Spring Boot OAuth2
that talks about it. Is user approval the same thing as user authentication. In other words when autoApprove is set to true for the the client, user authentication is skipped?
Authentication and approval are not the same, see RFC6749:
4.1.1. Authorization Request
[...]
The authorization server validates the request to ensure that all
required parameters are present and valid. If the request is valid,
the authorization server authenticates the resource owner and obtains
an authorization decision (by asking the resource owner or by
establishing approval via other means).
When a decision is established, the authorization server directs the
user-agent to the provided client redirection URI using an HTTP
redirection response, or by other means available to it via the
user-agent.
Spring OAuth2's autoApprove skips the approval (establishing approval via other means), see UserApprovalHandler.html#checkForPreApproval:
Provides a hook for allowing requests to be pre-approved (skipping the User Approval Page). Some implementations may allow users to store approval decisions so that they only have to approve a site once. This method is called in the AuthorizationEndpoint before sending the user to the Approval page. If this method sets oAuth2Request.approved to true, the Approval page will be skipped.
See also:
OAuth2 SSO with Spring Boot without the authorization screen
How to bypass access confirmation step in Spring security OAuth2 if user has previously authorized access?
Related
I am trying to integrate OKTA as service provider to provide access to the custom application for external customers.
External Users login to enterprise Idp to access the custom application
After successful authentication IDP triggers the IDP-Initiated flow and submits the SAML response to OKTA
OKTA checks for the external user information in the SAML assertion and sends these details to Custom API application to identify the user
If the user is found, the API returns the required information to OKTA
OKTA will initiate the PKCE flow to provide access to the custom application
I was success in configuring the OKTA and external customer IDP. But, Can anyone knows how OKTA will call the custom API application to identify the user information? Also, how to configure the redirect URL?
unfortunately I don't have an answer to your question as we use PingFederate but I was curious as to how you setup Okta (as the SP) to accommodate the IdP-Initiated call, without having to call back into the IdP for authentication? I ask because, as the IdP, we are calling Okta (as the SP) and the SAML response but the vendor is stating they cannot setup Okta without the IdP URL to call back into to have us, the IdP, authenticate the user. Seems your setup works how we believe it should so wanted to get more details about this.
I have a portal application developed using spring security and mvc framework. This portal application connects to IDP (Developed using Spring security and spring saml) for authentication. if the user authentication is success,user will be navigated to homepage where multiple links are provided for external applications… When the user clicks on the application link, user should successfully navigated to the respective application without challenging login page.
Other applications are developed using struts and spring security. How do I make sure that when a link is clicked from the portal, either saml token or context is passed to other application so it will not ask for login.
Any help is greatly appreciated.
The most common flow for SAML is something like the following:
Application (called service provider, or SP) receives request (any request, like request for a business resource) from unauthenticated user
It redirects the user (most commonly via http redirect) to the IdP (in which the SP should already be registered)
If the user is not authenticated to the IdP (not logged in to SSO), a login form is presented and login is managed by the IdP until there is a user session with the IdP
If the user is already authenticated with the IdP (because either he was already or entered a correct user/password), the IdP issues its claim token and posts the user with the token back to the Assertion Consumer Service in the SP (the original application)
The Assertion Consumer Service (practically just an API endpoint) receives and validates the SAML token and creates an own application session with the user. Now the user is authenticated to the application (SP)
Upon the next request to the application (SP), there is already a session, so SAML is not involved
Note that if there is already a session with the IdP, all of this is seamless for the user. A bunch of redirects take place, but the user will just reach the application without entering credentials.
So the short answer to your question is that your external applications need to support SAML SSO and need to be registered with the identity provider, in which case they can just use the IdP for authenticating the user and signing the claims it may have.
I am trying to implement a OAuth2 Provider, that authenticates users with a custom login.
For understanding I looked at the Spring Boot OAuth2 Tutorial.
I don't quite get, how I can implement my own Authentication meachnism to work with the OAuth2 SSO from my Server.
I want to add custom authentication mechanisms (like "user has to answer a question for authentication" or "user has to enter id and click button for authentication") instead of the Facebook and Github examples.
I read about implementing my own AuthenticationProvider, but I am stuck how to combine all the puzzle parts.
Let's go one step at a time. OAuth is only authz provider so not talk about authentication. Now for your usecase specifically, if you want user to be authenticated then OAuth authz code based flow makes sense (You can even go for implicit flow, check rfc 6749). Now how will this work for you. I am picking up the implicit flow for simplicity, Authz flow is just extension of it where end client gets a temporary code which it exchanges with Identity Server later to get the access token. Here are the steps:
Client App hits the /authorization uri with data as per rfc 6749
After validating the submitted data, server forwards user to Login page (or other page for authentication). After authentication, cookie is set in the browser or data is stored in server to mark a user as authenticated.
After authentication server redirects user to user consent page (You can even skip this if needed depending on need, But OAuth 2 spec contains this) where user specifies which all permissions (scopes) are allowed, here user can allow either allow or deny.
if user allows then these permissions are submitted to server and then server stores the data and redirects the user to client URI with access token in # fragement of client redirect URI (callback URI submitted during actual request)
I had a requirement to implement spring security saml implementation.
And I want to connect to IDP(Identity Provider) to authenticate without using IDp's login page. In my case, I want to use Service Provider (login page)..
Is this possible? If yes how to achieve this?
You can try with WSO2IS with request path authenticators which validates user credentials comes from SP login request. If you take SAML2 SSO scenario, SP can send SAML2 Auth request using POST binding to IDP. In the same request SP can send the end user's credentials that is retrieved from the login page of SP application. Then you would not see the login page in IDP and credential are retrieved from auth request and validates with IDP's user store. If success SAML2 response is generated. You can take help from this link.
This is not really a good idea since by definition, the service provider is not supposed to authenticate users, that is the IDP's responsibility.
If you are concerned about branding.. you may be able to request the IDP to personalise their login page if your SP has requested authentication although it is slightly unlikely that they will agree to this.
We have implemented a RESTful API using RestEasy. Now we are planning to build our own OAuth implementation and will integrate it with our Rest API.
I do not fully understand how OAuth handles authorization of every request to the API. My understanding is as follows:
User is authenticated by the OAuth server before any REST API calls are made.
Every REST API call will contain a token. The REST API server validates this token with the OAuth server. If the token is valid then the server will return a response.
This should have an impact on performance as we are validating the token for each and every API request with the second server. Is this understanding correct?
This will depend on how you will define your REST API. Basically OAUTH call has following components.
User: Who makes a request.
Provider: Who holds user information and provide apis to access them.
Consumer: Who asks the user to authorize the consumer to make request to the apis.
The basic workflow is as follows,
User tries to access restricted resource from Consumer.
Consumer asks user to share some information about him.(scope)
User selects his identity provider.
Consumer should be known to the Provider.(Usually consumer register itself as an application/website in provider's portal)
Consumer redirects to the provider with his consumer_key and scopes.
User authorize the application and grants access to some of his resource.
Provider creates a token and redirects back to consumer.
Consumer exchanges this token and its identity to get a access_token for user.
Consumer uses the access_token to make authorize request to provider and asks few information about user.
Provider sends those information to consumer.
Consumer verifies the information and user is logged into the system.
Now each token is generated against the scope and will be valid for some days. Token validation will be part of response from Provider.
In your system, you can store user data against token, so that we need not request Provider to send those information. But if you dont want to store user information certainly there will be additional calls.