001 /* 002 * Copyright (C) 2012 eXo Platform SAS. 003 * 004 * This is free software; you can redistribute it and/or modify it 005 * under the terms of the GNU Lesser General Public License as 006 * published by the Free Software Foundation; either version 2.1 of 007 * the License, or (at your option) any later version. 008 * 009 * This software is distributed in the hope that it will be useful, 010 * but WITHOUT ANY WARRANTY; without even the implied warranty of 011 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 012 * Lesser General Public License for more details. 013 * 014 * You should have received a copy of the GNU Lesser General Public 015 * License along with this software; if not, write to the Free 016 * Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 017 * 02110-1301 USA, or see the FSF site: http://www.fsf.org. 018 */ 019 package org.crsh.ssh.term; 020 021 import org.apache.sshd.common.keyprovider.AbstractKeyPairProvider; 022 import org.apache.sshd.common.util.SecurityUtils; 023 import org.bouncycastle.openssl.PEMReader; 024 import org.crsh.vfs.Resource; 025 026 import java.io.ByteArrayInputStream; 027 import java.io.InputStreamReader; 028 import java.security.KeyPair; 029 import java.util.ArrayList; 030 import java.util.List; 031 import java.util.logging.Level; 032 import java.util.logging.Logger; 033 034 public class URLKeyPairProvider extends AbstractKeyPairProvider { 035 036 /** . */ 037 private static final Logger log = Logger.getLogger(URLKeyPairProvider.class.getName()); 038 039 /** . */ 040 private final Resource key; 041 042 public URLKeyPairProvider(Resource key) { 043 this.key = key; 044 } 045 046 @Override 047 protected KeyPair[] loadKeys() { 048 if (!SecurityUtils.isBouncyCastleRegistered()) { 049 throw new IllegalStateException("BouncyCastle must be registered as a JCE provider"); 050 } 051 List<KeyPair> keys = new ArrayList<KeyPair>(); 052 if (key != null) { 053 try { 054 PEMReader r = new PEMReader(new InputStreamReader(new ByteArrayInputStream(key.getContent()))); 055 try { 056 Object o = r.readObject(); 057 if (o instanceof KeyPair) { 058 keys.add((KeyPair) o); 059 } 060 } finally { 061 r.close(); 062 } 063 } catch (Exception e) { 064 log.log(Level.INFO, "Unable to read key " + key + ": " + key, e); 065 } 066 } 067 return keys.toArray(new KeyPair[keys.size()]); 068 } 069 }