| /* |
| * Licensed to the Apache Software Foundation (ASF) under one or more |
| * contributor license agreements. See the NOTICE file distributed with |
| * this work for additional information regarding copyright ownership. |
| * The ASF licenses this file to You 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.apache.nifi.registry.security.authentication; |
| |
| import org.slf4j.Logger; |
| import org.slf4j.LoggerFactory; |
| |
| import javax.servlet.http.HttpServletRequest; |
| |
| public abstract class BearerAuthIdentityProvider implements IdentityProvider { |
| |
| public static final String AUTHORIZATION = "Authorization"; |
| public static final String BEARER = "Bearer "; |
| |
| private static final Logger logger = LoggerFactory.getLogger(BearerAuthIdentityProvider.class); |
| |
| private static final IdentityProviderUsage usage = new IdentityProviderUsage() { |
| @Override |
| public String getText() { |
| return "The user credentials must be passed in standard HTTP Bearer Authorization format. " + |
| "That is: 'Authorization: Bearer <token>', " + |
| "where <token> is a value that will be validated by this identity provider."; |
| } |
| |
| @Override |
| public AuthType getAuthType() { |
| return AuthType.BEARER; |
| } |
| }; |
| |
| @Override |
| public IdentityProviderUsage getUsageInstructions() { |
| return usage; |
| } |
| |
| @Override |
| public AuthenticationRequest extractCredentials(HttpServletRequest request) { |
| |
| if (request == null) { |
| logger.debug("Cannot extract user credentials from null servletRequest"); |
| return null; |
| } |
| |
| // only support this type of login when running securely |
| if (!request.isSecure()) { |
| return null; |
| } |
| |
| // get the principal out of the user token |
| final String authorization = request.getHeader(AUTHORIZATION); |
| if (authorization == null || !authorization.startsWith(BEARER)) { |
| logger.debug("HTTP Bearer Auth credentials not present. Not attempting to extract credentials for authentication."); |
| return null; |
| } |
| |
| // Extract the encoded token from the Authorization header |
| final String token = authorization.substring(BEARER.length()).trim(); |
| |
| return new AuthenticationRequest(null, token, null); |
| |
| } |
| |
| } |