Revoke JWT Oauth2 Refresh Token - spring-security

Question

I am trying to find a way to revoke Oauth2 JWT Refresh Token with vanilla Spring implementation and JwtTokenStore.
First: can somebody confirm that there is no API similar to /oauth/token that allows me to revoke a refresh token?
I wanted to add a custom API that would delete the refresh token along the folowing lines:
OAuth2RefreshToken oauth2RefreshToken=tokenStore.readRefreshToken(refreshToken);
tokenStore.removeRefreshToken(oauth2RefreshToken);
Now, looking at the JwtTokenStore, I noticed that it uses an ApprovalStore. So I went ahead and provided an InMemoryApprovalStore to my JwtTokenStore. My JwtTokenStore instantiation this look as follows:
#Bean
protected JwtAccessTokenConverter jwtTokenEnhancer() {
JwtAccessTokenConverter converter = new JwtAccessTokenConverter();
converter.setSigningKey("123456");
return converter;
}
#Bean
public JwtTokenStore getTokenStore(){
tokenStore= new JwtTokenStore(jwtTokenEnhancer());
tokenStore.setApprovalStore(new InMemoryApprovalStore());
tokenStore.setTokenEnhancer(jwtTokenEnhancer());
return tokenStore;
};
Results: with no InMemoryApprovalStore, I can authenticate users and refresh tokens without problems. However, as soon as I add InMemoryApprovalStore to the token store, I start getting the following error message:
{"error":"invalid_grant","error_description":"Invalid refresh token: eyJhbGciOiJIUzI1NiJ9.eyJleHAiOjE0NDUwMjQ2MTcsInVzZXJfbmFtZSI6IjYzZjIyYjZlLWU5MGUtNDFjYS1iYzJlLTBmZTgzNmY3MTQ2NyIsImF1dGhvcml0aWVzIjpbIlJPTEVfQURNSU4iLCJST0xFX1VTRVIiXSwianRpIjoiMjgwMDgwNWQtMjk1Zi00ZDQzLWI2NTYtMDNlZWYwMWFkMjg0IiwiY2xpZW50X2lkIjoid2ViLWNsaWVudCIsInNjb3BlIjpbInJlYWQiLCJ3cml0ZSIsInRydXN0Il19.BPC0HqLYjWGM0IFjvsUGGKQ9dyIXSXwMhraCVFIxD0U"}
My second question is thus what is the proper way to revoke a refresh token?
Edit: I found the following thread that suggests that ApprovalStore is indeed the way to revoke JWT tokens. I now just need to find out how to use them properly.

Answer 1

First: can somebody confirm that there is no API similar to /oauth/token that allows me to revoke a refresh token?
Confirmed.
You don't need to define JwtTokenStore bean, spring will create it for you using AuthorizationServerEndpointsConfigurer
private TokenStore tokenStore() {
if (tokenStore == null) {
if (accessTokenConverter() instanceof JwtAccessTokenConverter) {
this.tokenStore = new JwtTokenStore((JwtAccessTokenConverter) accessTokenConverter());
}
else {
this.tokenStore = new InMemoryTokenStore();
}
}
return this.tokenStore;
}
private ApprovalStore approvalStore() {
if (approvalStore == null && tokenStore() != null && !isApprovalStoreDisabled()) {
TokenApprovalStore tokenApprovalStore = new TokenApprovalStore();
tokenApprovalStore.setTokenStore(tokenStore());
this.approvalStore = tokenApprovalStore;
}
return this.approvalStore;
}
My second question is thus what is the proper way to revoke a refresh token?
revoke the approval for the token, this was used by JwtTokenStore
private void remove(String token) {
if (approvalStore != null) {
OAuth2Authentication auth = readAuthentication(token);
String clientId = auth.getOAuth2Request().getClientId();
Authentication user = auth.getUserAuthentication();
if (user != null) {
Collection<Approval> approvals = new ArrayList<Approval>();
for (String scope : auth.getOAuth2Request().getScope()) {
approvals.add(new Approval(user.getName(), clientId, scope, new Date(), ApprovalStatus.APPROVED));
}
approvalStore.revokeApprovals(approvals);
}
}
}