org.crsh.ssh.term.URLKeyPairProvider.java Source code

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Here is the source code for org.crsh.ssh.term.URLKeyPairProvider.java

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/*
 * Copyright (C) 2012 eXo Platform SAS.
 *
 * This is free software; you can redistribute it and/or modify it
 * under the terms of the GNU Lesser General Public License as
 * published by the Free Software Foundation; either version 2.1 of
 * the License, or (at your option) any later version.
 *
 * This software is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with this software; if not, write to the Free
 * Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
 * 02110-1301 USA, or see the FSF site: http://www.fsf.org.
 */
package org.crsh.ssh.term;

import org.apache.sshd.common.keyprovider.AbstractKeyPairProvider;
import org.apache.sshd.common.util.SecurityUtils;
import org.bouncycastle.openssl.PEMKeyPair;
import org.bouncycastle.openssl.jcajce.JcaPEMKeyConverter;
import org.crsh.ssh.util.KeyPairUtils;
import org.crsh.vfs.Resource;

import java.io.ByteArrayInputStream;
import java.io.InputStreamReader;
import java.security.KeyPair;
import java.util.ArrayList;
import java.util.List;
import java.util.logging.Level;
import java.util.logging.Logger;

public class URLKeyPairProvider extends AbstractKeyPairProvider {

    /** . */
    private static final Logger log = Logger.getLogger(URLKeyPairProvider.class.getName());

    /** . */
    private final Resource key;

    public URLKeyPairProvider(Resource key) {
        this.key = key;
    }

    @Override
    public Iterable<java.security.KeyPair> loadKeys() {
        if (!SecurityUtils.isBouncyCastleRegistered()) {
            throw new IllegalStateException("BouncyCastle must be registered as a JCE provider");
        }
        List<KeyPair> keys = new ArrayList<KeyPair>();
        if (key != null) {
            try {
                Object o = KeyPairUtils.readKey(new InputStreamReader(new ByteArrayInputStream(key.getContent())));
                if (o instanceof KeyPair) {
                    keys.add((KeyPair) o);
                } else if (o instanceof PEMKeyPair) {
                    JcaPEMKeyConverter converter = new JcaPEMKeyConverter();
                    keys.add(converter.getKeyPair((PEMKeyPair) o));
                }
            } catch (Exception e) {
                log.log(Level.INFO, "Unable to read key " + key + ": " + key, e);
            }
        }
        return keys;
    }
}