| /* |
| * 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.ssl; |
| |
| import java.util.ArrayList; |
| import java.util.Collections; |
| import java.util.List; |
| import org.apache.nifi.annotation.documentation.CapabilityDescription; |
| import org.apache.nifi.annotation.documentation.Tags; |
| import org.apache.nifi.components.AllowableValue; |
| import org.apache.nifi.components.PropertyDescriptor; |
| import org.apache.nifi.processor.util.StandardValidators; |
| import org.apache.nifi.security.util.TlsConfiguration; |
| import org.apache.nifi.security.util.TlsPlatform; |
| |
| /** |
| * This class is functionally the same as {@link StandardSSLContextService}, but it restricts the allowable |
| * values that can be selected for TLS/SSL protocols. |
| */ |
| @Tags({"tls", "ssl", "secure", "certificate", "keystore", "truststore", "jks", "p12", "pkcs12", "pkcs"}) |
| @CapabilityDescription("Restricted implementation of the SSLContextService. Provides the ability to configure " |
| + "keystore and/or truststore properties once and reuse that configuration throughout the application, " |
| + "but only allows a restricted set of TLS/SSL protocols to be chosen (no SSL protocols are supported). The set of protocols selectable will " |
| + "evolve over time as new protocols emerge and older protocols are deprecated. This service is recommended " |
| + "over StandardSSLContextService if a component doesn't expect to communicate with legacy systems since it is " |
| + "unlikely that legacy systems will support these protocols.") |
| public class StandardRestrictedSSLContextService extends StandardSSLContextService implements RestrictedSSLContextService { |
| |
| public static final PropertyDescriptor RESTRICTED_SSL_ALGORITHM = new PropertyDescriptor.Builder() |
| .name("SSL Protocol") |
| .displayName("TLS Protocol") |
| .defaultValue(TlsConfiguration.TLS_PROTOCOL) |
| .required(false) |
| .allowableValues(getRestrictedProtocolAllowableValues()) |
| .description("TLS Protocol Version for encrypted connections. Supported versions depend on the specific version of Java used.") |
| .addValidator(StandardValidators.NON_EMPTY_VALIDATOR) |
| .sensitive(false) |
| .build(); |
| |
| private static final List<PropertyDescriptor> properties; |
| |
| static { |
| List<PropertyDescriptor> props = new ArrayList<>(); |
| props.add(KEYSTORE); |
| props.add(KEYSTORE_PASSWORD); |
| props.add(KEY_PASSWORD); |
| props.add(KEYSTORE_TYPE); |
| props.add(TRUSTSTORE); |
| props.add(TRUSTSTORE_PASSWORD); |
| props.add(TRUSTSTORE_TYPE); |
| props.add(RESTRICTED_SSL_ALGORITHM); |
| properties = Collections.unmodifiableList(props); |
| } |
| |
| @Override |
| protected List<PropertyDescriptor> getSupportedPropertyDescriptors() { |
| return properties; |
| } |
| |
| @Override |
| public String getSslAlgorithm() { |
| return configContext.getProperty(RESTRICTED_SSL_ALGORITHM).getValue(); |
| } |
| |
| private static AllowableValue[] getRestrictedProtocolAllowableValues() { |
| final List<AllowableValue> allowableValues = new ArrayList<>(); |
| |
| allowableValues.add(new AllowableValue(TlsConfiguration.TLS_PROTOCOL, TlsConfiguration.TLS_PROTOCOL, "Negotiate latest protocol version based on platform supported versions")); |
| |
| for (final String preferredProtocol : TlsPlatform.getPreferredProtocols()) { |
| final String description = String.format("Require %s protocol version", preferredProtocol); |
| allowableValues.add(new AllowableValue(preferredProtocol, preferredProtocol, description)); |
| } |
| |
| return allowableValues.toArray(new AllowableValue[allowableValues.size()]); |
| } |
| } |