| /* |
| * 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.sshd.common.signature; |
| |
| import java.util.Arrays; |
| import java.util.Collection; |
| import java.util.Collections; |
| import java.util.List; |
| |
| import org.apache.sshd.common.NamedFactory; |
| import org.apache.sshd.common.NamedResource; |
| import org.apache.sshd.common.util.GenericUtils; |
| import org.apache.sshd.common.util.ValidateUtils; |
| |
| /** |
| * Manage the list of named factories for <code>Signature</code>. |
| * |
| * @author <a href="mailto:dev@mina.apache.org">Apache MINA SSHD Project</a> |
| */ |
| public interface SignatureFactoriesManager { |
| /** |
| * @return The list of named <code>Signature</code> factories |
| */ |
| List<NamedFactory<Signature>> getSignatureFactories(); |
| default String getSignatureFactoriesNameList() { |
| return NamedResource.Utils.getNames(getSignatureFactories()); |
| } |
| default List<String> getSignatureFactoriesNames() { |
| return NamedResource.Utils.getNameList(getSignatureFactories()); |
| } |
| |
| void setSignatureFactories(List<NamedFactory<Signature>> factories); |
| default void setSignatureFactoriesNameList(String names) { |
| setSignatureFactoriesNames(GenericUtils.split(names, ',')); |
| } |
| default void setSignatureFactoriesNames(String ... names) { |
| setSignatureFactoriesNames(GenericUtils.isEmpty((Object[]) names) ? Collections.<String>emptyList() : Arrays.asList(names)); |
| } |
| default void setSignatureFactoriesNames(Collection<String> names) { |
| BuiltinSignatures.ParseResult result = BuiltinSignatures.parseSignatureList(names); |
| @SuppressWarnings({ "rawtypes", "unchecked" }) |
| List<NamedFactory<Signature>> factories = |
| (List) ValidateUtils.checkNotNullAndNotEmpty(result.getParsedFactories(), "No supported signature factories: %s", names); |
| Collection<String> unsupported = result.getUnsupportedFactories(); |
| ValidateUtils.checkTrue(GenericUtils.isEmpty(unsupported), "Unsupported signature factories found: %s", unsupported); |
| setSignatureFactories(factories); |
| } |
| |
| /** |
| * Attempts to use the primary manager's signature factories if not {@code null}/empty, |
| * otherwise uses the secondary ones (regardless of whether there are any...) |
| * |
| * @param primary The primary {@link SignatureFactoriesManager} |
| * @param secondary The secondary {@link SignatureFactoriesManager} |
| * @return The resolved signature factories - may be {@code null}/empty |
| * @see #getSignatureFactories(SignatureFactoriesManager) |
| */ |
| static List<NamedFactory<Signature>> resolveSignatureFactories( |
| SignatureFactoriesManager primary, SignatureFactoriesManager secondary) { |
| List<NamedFactory<Signature>> factories = getSignatureFactories(primary); |
| return GenericUtils.isEmpty(factories) ? getSignatureFactories(secondary) : factories; |
| } |
| |
| /** |
| * @param manager The {@link SignatureFactoriesManager} instance - ignored if {@code null} |
| * @return The associated list of named <code>Signature</code> factories or {@code null} if |
| * no manager instance |
| */ |
| static List<NamedFactory<Signature>> getSignatureFactories(SignatureFactoriesManager manager) { |
| return (manager == null) ? null : manager.getSignatureFactories(); |
| } |
| } |