| /* |
| * 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.karaf.shell.ssh; |
| |
| import java.security.InvalidKeyException; |
| import java.util.ArrayList; |
| import java.util.Arrays; |
| import java.util.Collection; |
| import java.util.Iterator; |
| import java.util.LinkedList; |
| import java.util.List; |
| |
| import org.apache.sshd.common.Cipher; |
| import org.apache.sshd.common.Mac; |
| import org.apache.sshd.common.NamedFactory; |
| import org.apache.sshd.common.cipher.AES128CBC; |
| import org.apache.sshd.common.cipher.AES128CTR; |
| import org.apache.sshd.common.cipher.AES192CBC; |
| import org.apache.sshd.common.cipher.AES256CBC; |
| import org.apache.sshd.common.cipher.AES256CTR; |
| import org.apache.sshd.common.cipher.ARCFOUR128; |
| import org.apache.sshd.common.cipher.ARCFOUR256; |
| import org.apache.sshd.common.cipher.BlowfishCBC; |
| import org.apache.sshd.common.cipher.TripleDESCBC; |
| import org.apache.sshd.common.mac.HMACMD5; |
| import org.apache.sshd.common.mac.HMACMD596; |
| import org.apache.sshd.common.mac.HMACSHA1; |
| import org.apache.sshd.common.mac.HMACSHA196; |
| |
| public class SshUtils { |
| |
| public static <S> List<NamedFactory<S>> filter(Collection<NamedFactory<S>> factories, String names) { |
| List<NamedFactory<S>> list = new ArrayList<NamedFactory<S>>(); |
| for (String name : names.split(",")) { |
| for (NamedFactory<S> factory : factories) { |
| if (factory.getName().equals(name)) { |
| list.add(factory); |
| } |
| } |
| } |
| return list; |
| } |
| |
| public static List<NamedFactory<Mac>> buildMacs(String names) { |
| return filter(Arrays.<NamedFactory<Mac>>asList( |
| new HMACMD5.Factory(), |
| new HMACSHA1.Factory(), |
| new HMACMD596.Factory(), |
| new HMACSHA196.Factory()), |
| names); |
| } |
| |
| public static List<NamedFactory<Cipher>> buildCiphers(String names) { |
| List<NamedFactory<Cipher>> avail = new LinkedList<NamedFactory<Cipher>>(); |
| avail.add(new AES128CTR.Factory()); |
| avail.add(new AES256CTR.Factory()); |
| avail.add(new ARCFOUR128.Factory()); |
| avail.add(new ARCFOUR256.Factory()); |
| avail.add(new AES128CBC.Factory()); |
| avail.add(new TripleDESCBC.Factory()); |
| avail.add(new BlowfishCBC.Factory()); |
| avail.add(new AES192CBC.Factory()); |
| avail.add(new AES256CBC.Factory()); |
| |
| avail = filter(avail, names); |
| |
| for (Iterator<NamedFactory<Cipher>> i = avail.iterator(); i.hasNext();) { |
| final NamedFactory<Cipher> f = i.next(); |
| try { |
| final Cipher c = f.create(); |
| final byte[] key = new byte[c.getBlockSize()]; |
| final byte[] iv = new byte[c.getIVSize()]; |
| c.init(Cipher.Mode.Encrypt, key, iv); |
| } catch (InvalidKeyException e) { |
| i.remove(); |
| } catch (Exception e) { |
| i.remove(); |
| } |
| } |
| return avail; |
| } |
| |
| } |