/*
* 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.authorization.resource;
import java.util.Map;
import org.apache.nifi.authorization.AccessDeniedException;
import org.apache.nifi.authorization.AuthorizationResult;
import org.apache.nifi.authorization.AuthorizationResult.Result;
import org.apache.nifi.authorization.Authorizer;
import org.apache.nifi.authorization.RequestAction;
import org.apache.nifi.authorization.Resource;
import org.apache.nifi.authorization.user.NiFiUser;
import org.apache.nifi.web.ResourceNotFoundException;
/**
* Authorizable for authorizing access to data. Data based authorizable requires authorization for the entire DN chain.
*/
public class DataAuthorizable implements Authorizable, EnforcePolicyPermissionsThroughBaseResource {
final Authorizable authorizable;
public DataAuthorizable(final Authorizable authorizable) {
this.authorizable = authorizable;
}
@Override
public Authorizable getBaseAuthorizable() {
return authorizable;
}
@Override
public Authorizable getParentAuthorizable() {
if (authorizable.getParentAuthorizable() == null) {
return null;
} else {
return new DataAuthorizable(authorizable.getParentAuthorizable());
}
}
@Override
public Resource getResource() {
return ResourceFactory.getDataResource(authorizable.getResource());
}
@Override
public AuthorizationResult checkAuthorization(Authorizer authorizer, RequestAction action, NiFiUser user, Map<String, String> resourceContext) {
if (user == null) {
return AuthorizationResult.denied("Unknown user.");
}
AuthorizationResult result = null;
// authorize each element in the chain
NiFiUser chainedUser = user;
do {
try {
// perform the current user authorization
result = Authorizable.super.checkAuthorization(authorizer, action, chainedUser, resourceContext);
// if authorization is not approved, reject
if (!Result.Approved.equals(result.getResult())) {
return result;
}
// go to the next user in the chain
chainedUser = chainedUser.getChain();
} catch (final ResourceNotFoundException e) {
result = AuthorizationResult.denied("Unknown source component.");
}
} while (chainedUser != null);
if (result == null) {
result = AuthorizationResult.denied();
}
return result;
}
@Override
public void authorize(Authorizer authorizer, RequestAction action, NiFiUser user, Map<String, String> resourceContext) throws AccessDeniedException {
if (user == null) {
throw new AccessDeniedException("Unknown user.");
}
// authorize each element in the chain
NiFiUser chainedUser = user;
do {
try {
// perform the current user authorization
Authorizable.super.authorize(authorizer, action, chainedUser, resourceContext);
// go to the next user in the chain
chainedUser = chainedUser.getChain();
} catch (final ResourceNotFoundException e) {
throw new AccessDeniedException("Unknown source component.");
}
} while (chainedUser != null);
}
}