org.trellisldp.oauth.Authenticator Maven / Gradle / Ivy
/*
* Copyright (c) 2020 Aaron Coburn and individual contributors
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.trellisldp.oauth;
import static org.trellisldp.oauth.OAuthUtils.withSubjectClaim;
import static org.trellisldp.oauth.OAuthUtils.withWebIdClaim;
import io.jsonwebtoken.Claims;
import java.security.Principal;
public interface Authenticator {
/**
* Parse a token into a set of claims.
* @param token the token
* @return JWT claims
*/
Claims parse(String token);
/**
* Authenticate credentials.
* @param token the token
* @return the principal if present
*/
default Principal authenticate(final String token) {
final Claims claims = parse(token);
// Use a webid claim, if one exists or try generating a webid from other elements
final Principal webid = withWebIdClaim(claims);
if (webid != null) return webid;
return withSubjectClaim(claims);
}
}