Java tutorial
/* * 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.web.security.authentication.x509; import org.apache.commons.lang3.StringUtils; import org.apache.nifi.registry.properties.NiFiRegistryProperties; import org.apache.nifi.registry.security.authentication.AuthenticationRequest; import org.apache.nifi.registry.web.security.authentication.AuthenticationRequestToken; import org.apache.nifi.registry.security.authentication.AuthenticationResponse; import org.apache.nifi.registry.security.authentication.IdentityProvider; import org.apache.nifi.registry.web.security.authentication.IdentityAuthenticationProvider; import org.apache.nifi.registry.web.security.authentication.AuthenticationSuccessToken; import org.apache.nifi.registry.security.authorization.Authorizer; import org.apache.nifi.registry.security.authorization.RequestAction; import org.apache.nifi.registry.security.authorization.Resource; import org.apache.nifi.registry.security.authorization.exception.AccessDeniedException; import org.apache.nifi.registry.security.authorization.resource.Authorizable; import org.apache.nifi.registry.security.authorization.resource.ResourceFactory; import org.apache.nifi.registry.security.authorization.user.NiFiUser; import org.apache.nifi.registry.security.authorization.user.NiFiUserDetails; import org.apache.nifi.registry.security.authorization.user.StandardNiFiUser; import org.apache.nifi.registry.security.util.ProxiedEntitiesUtils; import org.apache.nifi.registry.web.security.authentication.exception.UntrustedProxyException; import java.util.List; import java.util.ListIterator; import java.util.Set; public class X509IdentityAuthenticationProvider extends IdentityAuthenticationProvider { private static final Authorizable PROXY_AUTHORIZABLE = new Authorizable() { @Override public Authorizable getParentAuthorizable() { return null; } @Override public Resource getResource() { return ResourceFactory.getProxyResource(); } }; public X509IdentityAuthenticationProvider(NiFiRegistryProperties properties, Authorizer authorizer, IdentityProvider identityProvider) { super(properties, authorizer, identityProvider); } @Override protected AuthenticationSuccessToken buildAuthenticatedToken(AuthenticationRequestToken requestToken, AuthenticationResponse response) { AuthenticationRequest authenticationRequest = requestToken.getAuthenticationRequest(); String proxiedEntitiesChain = authenticationRequest.getDetails() != null ? (String) authenticationRequest.getDetails() : null; if (StringUtils.isBlank(proxiedEntitiesChain)) { return super.buildAuthenticatedToken(requestToken, response); } // build the entire proxy chain if applicable - <end-user><proxy1><proxy2> final List<String> proxyChain = ProxiedEntitiesUtils.tokenizeProxiedEntitiesChain(proxiedEntitiesChain); proxyChain.add(response.getIdentity()); // add the chain as appropriate to each proxy NiFiUser proxy = null; for (final ListIterator<String> chainIter = proxyChain.listIterator(proxyChain.size()); chainIter .hasPrevious();) { String identity = chainIter.previous(); // determine if the user is anonymous final boolean isAnonymous = StringUtils.isBlank(identity); if (isAnonymous) { identity = StandardNiFiUser.ANONYMOUS_IDENTITY; } else { identity = mapIdentity(identity); } final Set<String> groups = getUserGroups(identity); // Only set the client address for client making the request because we don't know the clientAddress of the proxied entities String clientAddress = (proxy == null) ? requestToken.getClientAddress() : null; proxy = createUser(identity, groups, proxy, clientAddress, isAnonymous); if (chainIter.hasPrevious()) { try { PROXY_AUTHORIZABLE.authorize(authorizer, RequestAction.WRITE, proxy); } catch (final AccessDeniedException e) { throw new UntrustedProxyException(String.format("Untrusted proxy [%s].", identity)); } } } return new AuthenticationSuccessToken(new NiFiUserDetails(proxy)); } /** * Returns a regular user populated with the provided values, or if the user should be anonymous, a well-formed instance of the anonymous user with the provided values. * * @param identity the user's identity * @param chain the proxied entities * @param clientAddress the requesting IP address * @param isAnonymous if true, an anonymous user will be returned (identity will be ignored) * @return the populated user */ private static NiFiUser createUser(String identity, Set<String> groups, NiFiUser chain, String clientAddress, boolean isAnonymous) { if (isAnonymous) { return StandardNiFiUser.populateAnonymousUser(chain, clientAddress); } else { return new StandardNiFiUser.Builder().identity(identity).groups(groups).chain(chain) .clientAddress(clientAddress).build(); } } }