net.sf.ufsc.ftp.FtpSession.java Source code

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Here is the source code for net.sf.ufsc.ftp.FtpSession.java

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/*
 * UFSC: Universal File Server Connectivity
 * Copyright (c) 2004-2007 Paul Ferraro
 *
 * This library 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 library 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 library; if not, write to the Free Software Foundation,
 * Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
 *
 * Contact: ferraro@users.sourceforge.net
 */
package net.sf.ufsc.ftp;

import java.io.IOException;
import java.net.URI;

import net.sf.ufsc.AbstractSession;
import net.sf.ufsc.File;
import net.sf.ufsc.UserInfo;

import org.apache.commons.net.ftp.FTPClient;
import org.apache.commons.net.ftp.FTPReply;

/**
 * @author  Paul Ferraro
 * @since   1.0
 */
public class FtpSession extends AbstractSession {
    private FTPClient client;

    /**
     * Constructs a new FtpSession.
     * @param uri
     * @throws IOException
     */
    public FtpSession(URI uri, FTPClient client) throws IOException {
        super(uri);

        this.client = client;

        UserInfo userInfo = new UserInfo(uri);

        String host = uri.getHost();

        int port = uri.getPort();

        if (port < 0) {
            this.client.connect(host);
        } else {
            this.client.connect(host, port);
        }

        String reply = this.client.getReplyString();

        if (!FTPReply.isPositiveCompletion(this.client.getReplyCode())) {
            this.close();

            throw new IOException(reply);
        }

        this.logger.info(reply);

        boolean loggedIn = this.client.login(userInfo.getUser(), userInfo.getPassword());

        reply = this.client.getReplyString();

        if (!loggedIn) {
            this.close();

            throw new IOException(reply);
        }

        this.logger.info(reply);

        this.client.enterLocalPassiveMode();
    }

    /**
     * @see net.sf.ufsc.Session#getFile()
     */
    public File getFile() throws IOException {
        return new FtpFile(this.client, this.uri);
    }

    /**
     * @see net.sf.ufsc.Session#close()
     */
    public void close() {
        if (!this.isClosed()) {
            try {
                this.client.disconnect();
            } catch (IOException e) {
                this.logger.warn(e.getMessage());
            }
        }
    }

    /**
     * @see net.sf.ufsc.Session#isClosed()
     */
    public boolean isClosed() {
        return !this.client.isConnected();
    }
}