| /* |
| * 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; |
| import java.nio.charset.Charset; |
| import java.util.Base64; |
| |
| public abstract class BasicAuthIdentityProvider implements IdentityProvider { |
| |
| public static final String AUTHORIZATION = "Authorization"; |
| public static final String BASIC = "Basic "; |
| |
| private static final Logger logger = LoggerFactory.getLogger(BasicAuthIdentityProvider.class); |
| |
| private static final IdentityProviderUsage usage = new IdentityProviderUsage() { |
| @Override |
| public String getText() { |
| return "The user credentials must be passed in standard HTTP Basic Auth format. " + |
| "That is: 'Authorization: Basic <credentials>', " + |
| "where <credentials> is the base64 encoded value of '<username>:<password>'."; |
| } |
| |
| @Override |
| public AuthType getAuthType() { |
| return AuthType.BASIC; |
| } |
| }; |
| |
| @Override |
| public IdentityProviderUsage getUsageInstructions() { |
| return usage; |
| } |
| |
| @Override |
| public AuthenticationRequest extractCredentials(HttpServletRequest servletRequest) { |
| |
| if (servletRequest == null) { |
| logger.debug("Cannot extract user credentials from null servletRequest"); |
| return null; |
| } |
| |
| // only support this type of login when running securely |
| if (!servletRequest.isSecure()) { |
| return null; |
| } |
| |
| final String authorization = servletRequest.getHeader(AUTHORIZATION); |
| if (authorization == null || !authorization.startsWith(BASIC)) { |
| logger.debug("HTTP Basic Auth credentials not present. Not attempting to extract credentials for authentication."); |
| return null; |
| } |
| |
| AuthenticationRequest authenticationRequest; |
| |
| try { |
| |
| // Authorization: Basic {base64credentials} |
| String base64Credentials = authorization.substring(BASIC.length()).trim(); |
| String credentials = new String(Base64.getDecoder().decode(base64Credentials), Charset.forName("UTF-8")); |
| // credentials = username:password |
| final String[] credentialParts = credentials.split(":", 2); |
| String username = credentialParts[0]; |
| String password = credentialParts[1]; |
| |
| authenticationRequest = new UsernamePasswordAuthenticationRequest(username, password); |
| |
| } catch (IllegalArgumentException | IndexOutOfBoundsException e) { |
| logger.info("Failed to extract user identity credentials."); |
| logger.debug("", e); |
| return null; |
| } |
| |
| return authenticationRequest; |
| |
| } |
| |
| @Override |
| public boolean supports(Class<? extends AuthenticationRequest> authenticationRequestClazz) { |
| return UsernamePasswordAuthenticationRequest.class.isAssignableFrom(authenticationRequestClazz); |
| } |
| |
| } |