Next Auth with Keycloak (separated member database) - keycloak

I made a website with Next-auth.
My Next-Auth Provider is Keycloak(Openid-connect)
I want to make a separated member database to manage access permission
Example
Keycloak Server (Email) --> Next Auth Database Server (Transaction Email and Find Access Permission) --> Website Access Granted
How do I make Next Auth Database?

Related

Keycloak: Prevent client from logging in specific user

Is it possible in keycloak to prevent the account client from logging in a specific user? I have a user that is only supposed to log in via the admin-cli endpoints, but it is in the same realm as the account client.
You can try to remove the
default-roles-<realm-name> role
for this user. This will remove the effective roles for the account client role

Auto merge authenticated user from IDP with the existing user in the keycloak

I am working on a authentication/authorization flow with keycloak. I have manually registered some users inside keycloak.
Now, I am using Azure AD as an IDP. When I am trying to login with Azure AD for some email address(email already exists in the keycloak), then I am getting error "User with email <EMAIL> already exists. How do you want to continue?"
Error Screen
My Requirement is to automatically merge my idp authenticated user with the existing keycloack user (same email) by skipping the above screen.
Is there a way to achieve this?
I don't want redundant users in the keycloak for the same email address.

How to fetch user roles via JWT token when authenticate user with Google

I'm trying to use Google as an IDP for my application by federation.
For user authentication part i'm using openID connect flow.
Following steps have been done already.
Created a Google application
Got client ID and client secret
Configured Google federation in my application (Login with google)
Authentication flow is successfully working
Token retrieved successfully
The problem is I want to add user roles to the user that already registered in google and fetch the user roles as a claim in token that is retrieve from the google.
Basically I want do add role based authentication to the application based on user roles.
So how to create and assign user roles to Google user, and how to fetch them as a claim in JWT token?

Keycloak LDAP User Authentication not working

I have configured OpenLDAP with my keycloak, so that user management is taken care by LDAP. I have successfully sync the users from LDAP and I can see the user details in my List of users in Keycloak.I am using master realm only.
But when I try to generate token giving admin-cli client it gives this error.
Even the Authorization code flow it doesn't work.Tried to log in via keycloak UI it gives Invalid Credentials.
How can we use LDAP users for authentication in Keycloak ?

Oauth2: how should the resource server know if the access token is valid?

I'm implementing an Ouath2 authentication with Spring for our mobile API. So far it works but I don't know how I should keep the resource server separate. So I have an auth server which gives out tokens and refresh tokens using the password grant-type. Meaning the user would log into the mobile app, which sends the auth server the client id/client secret along with the user's
credentials, which results in an access token and a refresh token for the user with the appropriate (ROLE_USER) privileges. Another web based client is for the admins who do the same and get the ROLE_ADMIN privilege etc.
This works well so far.
Now if any client sends a request to the resource server what should happen? Should the resource server check the token's validity? If so in what way? Or should the auth server copy the token into the resource-server's database?
If you #EnableResourceServer you get a filter that checks access tokens. It needs to share a TokenStore with the auth server. That's about it to get something working.