We have a java application that is using Keycloak/Redhat SSO to login.
This application needs to provide a link in one of the jsp that redirects to a page in another Java EE application running on Jboss on a different server, and pass it the form data.
The second app is not using keycloak or SSO
We are thinking to pass the jwt token that we receive from keycloak to the second application. This token should have the userid and some other information that will allow the second app to check the role of that userid from the database and create a session cookie then forward them to the page without forwarding them to login page.
We got the authentication with Keycloak done in the first app and I have a userPrincipal object in my httpServletRequest.userPrincipal in the first app
I am not sure how to pass the principal or jwt token from the jsp on app1 to app2.
I looked at response.sendredirect() and setHeader but it doesn't seem to work when it's received on app2
What would be the best way to send this jwt token other than in a form parameter ?
should we serialize it and send it as json string ? Because if we send the token string itself it's encrypted and not sure how to decrypt it on the other app.
Thank you
Related
I have a jhipster generated monolithic application with Java bakend and React Frontend.
Now I am building up the api (backend) and want to test the endpoints with postman.
Too access protected ressources for example access only allwod with role USER, so I need to pass the acces token in the Authorizations Header of the request in Postman.
How can I get such a User Token from auth0 to put that token into Postman?
I tried to find answer but was not able to.
You can create an access token using Auth0's CLI:
auth0 test token -a https://<your-auth0-domain>/api/v2/
In our spring boot app, we are using keycloak and we configured multiple external IDP. Everything is working successfully on browser based. The login page that is provided by keycloak is showing direct grant option in addition to login with IDPs then if user clicks to login using IDP, he is redirected to IDP's login page then our keycloak receives the token.
What I want to change in that flow is that instead of showing user login page of keycloak I want to show him login page from my app(my FE) which is dealing with my BE api. My BE would dealing with KC. then If user select to login with IDP I want to get the redirect url from KC to pass it to my FE. Then after getting the token I want to redirect user to my FE immediately.
In other words I don't want users to access KC directly this should be throughout my BE
Your client applications should never have access to users credentials.
I'd consider things an other way arround (I make assumptions on your setup because you didn't give much details about it):
provide Keycloak with a custom theme to match your client application(s) look & feel
probably change your Spring backend configuration from client to resource-server. In OAuth2 wording, REST APIs are resource-server, not clients.
probably switch from 302 (redirect to Spring's oauth2Login) for unauthorized request to 401 (which is the standard HTTP status for unauthorized request)
probably, in your SPA client(s), use one of certified OIDC client libs to handle authorization-code flow with PKCE, silent token refreshing before it expires, HTTP interceptor to insert access token, route guards with auto-login,... My favorite for Angular is angular-auth-oidc-client
If I'm right about your REST API being configured with spring-boot-starter-oauth2-client and if you don't know yet how to configure it with spring-boot-starter-oauth2-resource-server, you can refer to Spring official doc or to this tutorials i wrote.
I am trying to set up authentication server for spring boot application. I have multiple microservices application. Let say hospitals, patients, reports applications. I have each of microservices service application to be authenticated before allowing user to access the resources.
Can I know how can I have common authentication logic as a separate application. let say authentication application. I am planning to us (spring security with Auth 2.0 and JWT token).
For example:
When user tries access hospital dashboard page, we will check the user is authenticated
First we need to check whether user is authentication if not I need
to redirect to login service in authentication application.
Once user is logged in, then when he try to access dashboard we will
check the token is valid. If valid then allow user to access the
dashboard service.
Now user try to access patient details which is there in patient.war as a separate project, as the user already logged in we need to valid token, then we need to allow access to resources API what he is trying to access. If token is invalid then we need to redirect to login page.
Question:
I have gone through some example they have authentication server and resource server as separate application. i.e #EnableAuthenticationServer and #EnableResourceServer. But I have noted this got deprecated in latest spring boot version if I am right. Please correct me if I am wrong.
How can I have authentication functionality as common war file and let the other resource server access it before allowing the user to access the reset service API?
Which is the right way to build a microservice application?
I need some experts help to understand the best approach we need to implement authentication and authorization in latest spring boot version.
This is a relatively older question but I'll answer since it may help others.
For any microservices-based architecture, the api gateway is an important aspect and it should be there.
All your microservices will be hiding behind the gateway and any calls made to the downstream services (hospitals, patients etc) will go through the gateway.
This gives you multiple advantages.
You can add login (authentication) functionality in the gateway
You can put rate limiter to avoid DOS attacks
A single point of entry for the outside world so your clients don't neet to know the URL of each microservice
Now, the way it works is:
The client sends username/password or client_id/client_secret to the /login endpoint which is inside the gateway (for example GatewayController)
Gateway sends credentials to an "Auth-Service" which authenticates the user from a db or anywhere and creates a JWT (Oauth token)
Gateway returns the jwt back to the client
Client calls the, let's say, /patients endpoint through gateway with the jwt as header "Authorization" parameter
Gateway -> Auth-Service (To validate the token)
If invalid, 403 forbidden is sent. Otherwise, request is forwarded to the downstream service (in this case Patients-Service)
Patients-Service sends the jwt token to Auth-Service to get permissions from inside the token since we know that the token has already been validated.
Once the permissions list is received, the Patients-Service matches them with the permissions mentioned on each api (for example PatientsController)
If any permission matches, the response is served. If not, 403 forbidden is served.
To make it more clear, Auth-Service is called once when the call is for login(authentication). Auth-Service is called twice for all other api calls(validate + permissions).
When i am trying to get access token through client credentials flow in okta ,i have got sucessfully,but by using that access token i am not able to fetch any user details.Like the code below
token.getTokenAttributes().get("uid").toString();
The above token object is jwtAuthenticationToken Which is used in web application.
i am using spring-boot okta
The Client Credentials flow is intended for server-side (confidential) client applications with no end user, which normally describes machine-to-machine communication.
It wouldn't have user context and it won’t have a user tied to the access token.
I want to know how the token based authentication is done in Java. I want that if I hit my application then the system should redirect it to the login page and once the user enters the credentials, the user shall be validated and authenticated. Once authenticated a token should be generated which shall be handled across client and server. My concern is if the token is generated, how it is being passed to the client and how the client sends it back to the server on every request processing. I know that it has to be set in header. But my question is how exactly. I know we have spring and all but I want to know how it is being done using jsp and servlets.
I went across few websites but unfortunately could not find the expected result. A small demonstration shall be very helpful. Thanks in advance.
There is no such authentication token. There is a session token defined in J2EE Web Application server standard (https://docs.oracle.com/cd/E19644-01/817-5451/dwsessn.html). Once the JSessionId is established between server and client it is used to manage the user.
For example if you build you own authentication system you can bind the jsessionid with user login attempts, and keep a list of jsessionids which has logged in successfully. This is basically what authentication frameworks do.
Also, you can check this Under what conditions is a JSESSIONID created? and this: Spring security FAQ