[keycloak-dev] Accessing Token Endpoint with a User access token to get Permissions
Hi,
Apologies if this email is incorrectly posted.
I'm using the newly released Keycloak 4 and I've been able to successfully get an
access token for a user from an access code posted back to my application. This
doesn't contain any permissions on the token (Rightly so, only roles)
I'm now trying to get an RPT with permissions from the of client application that
reflect what the User is allowed to do.
My request looks something like:
POST /auth/realms/MyRealm/protocol/openid-connect/token HTTP/1.1
Host: localhost:8080
Authorization: Bearer eyJhbGciOiJSUzI1NiIsInR5c ...
Content-Type: application/x-www-form-urlencoded
Cache-Control: no-cache
Postman-Token: 4054feaf-a9d7-48e2-99b6-eabc86bf8da5
grant_type=urn%3Aietf%3Aparams%3Aoauth%3Agrant-type%3Auma-ticket&audience=MyClient&permission=Default+Resource
Where the Bearer is the generated access_token. However I'me getting a response of :
500 Internal Server Error
{
"error": "server_error",
"error_description": "Unexpected error while evaluating
permissions"
}
And a stack trace of:
Unexpected error while evaluating permissions: java.lang.RuntimeException: Error while
reading attributes from security token.
at
org.keycloak.authorization.common.KeycloakIdentity.<init>(KeycloakIdentity.java:139)
at
org.keycloak.authorization.common.KeycloakIdentity.<init>(KeycloakIdentity.java:68)
at
org.keycloak.authorization.authorization.AuthorizationTokenService.lambda$static$1(AuthorizationTokenService.java:124)
at
org.keycloak.authorization.authorization.AuthorizationTokenService.createEvaluationContext(AuthorizationTokenService.java:311)
at
org.keycloak.authorization.authorization.AuthorizationTokenService.authorize(AuthorizationTokenService.java:161)
at
org.keycloak.protocol.oidc.endpoints.TokenEndpoint.permissionGrant(TokenEndpoint.java:1124)
at
org.keycloak.protocol.oidc.endpoints.TokenEndpoint.processGrantRequest(TokenEndpoint.java:190)
.....
Caused by: java.lang.NullPointerException
at
org.keycloak.services.util.DefaultClientSessionContext.fromClientSessionScopeParameter(DefaultClientSessionContext.java:64)
at
org.keycloak.authorization.common.KeycloakIdentity.<init>(KeycloakIdentity.java:123)
Any Ideas what I may be doing wrong? Any help appreciated.
Regards,
Mark