sftpconnection.java

一个JAVA做的FTP软件,带源码的,可以很好的进行二次开发,,并带有详细说明文件的

/*
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License
 * as published by the Free Software Foundation; either version 2
 * of the License, or (at your option) any later version.
 *
 * This program 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 General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
 */
package net.sf.jftp.net;

import com.sshtools.j2ssh.*;
import com.sshtools.j2ssh.authentication.*;
import com.sshtools.j2ssh.io.*;
import com.sshtools.j2ssh.session.*;
import com.sshtools.j2ssh.sftp.*;
import com.sshtools.j2ssh.subsystem.*;
import com.sshtools.j2ssh.transport.*;

import net.sf.jftp.config.Settings;
import net.sf.jftp.util.Log;
import net.sf.jftp.util.StringUtils;

import org.apache.log4j.*;

import java.io.*;

import java.net.*;

import java.util.*;


public class SftpConnection implements BasicConnection
{
    public static int smbBuffer = 32000;
    private String path = "";
    private String pwd = "/";
    private Vector listeners = new Vector();
    private String[] files;
    private String[] size = new String[0];
    private int[] perms = null;
    private String user;
    private String pass;
    private String host;
    private String baseFile;
    private int fileCount;
    private boolean isDirUpload = false;
    private boolean shortProgress = false;
    private int RW = SftpSubsystemClient.OPEN_CREATE |
                     SftpSubsystemClient.OPEN_WRITE;
    private int W = SftpSubsystemClient.OPEN_CREATE;
    private int R = SftpSubsystemClient.OPEN_READ;
    private SftpSubsystemClient sftp = null;
    private int port = 22;
    private boolean connected = false;
    private SshClient ssh = null;
    private SessionChannelClient session = null;

    public SftpConnection()
    {
    }

    public SftpConnection(String host)
    {
        this.host = host;
    }

    public SftpConnection(String host, int port)
    {
        this.host = host;
        this.port = port;
    }

    private boolean login()
    {
        try
        {
            ssh = new SshClient();
            ssh.connect(host, port,
                        new SftpVerification(Settings.sshHostKeyVerificationFile));

            //ssh.connect(host);
            PasswordAuthenticationClient pwd = new PasswordAuthenticationClient();
            pwd.setUsername(user);
            pwd.setPassword(pass);

            int result = ssh.authenticate(pwd);

            if(result == AuthenticationProtocolState.COMPLETE)
            {
                session = ssh.openSessionChannel();
                sftp = new SftpSubsystemClient();
                session.startSubsystem(sftp);

                // newer api
                //SftpClient sftp = ssh.openSftpClient();
                connected = true;

                return true;
            }
            else
            {
                return false;
            }
        }
        catch(Exception ex)
        {
            ex.printStackTrace();
            Log.debug("Error: " + ex);

            return false;
        }
    }

    public int removeFileOrDir(String file)
    {
        file = toSFTP(file);

        try
        {
            SftpFile f;

            if(!file.endsWith("/"))
            {
                Log.out(">>>>>>>> remove file: " + file);
                f = sftp.openFile(file, RW);
                f.delete();
            }
            else
            {
                Log.out(">>>>>>>> remove dir: " + file);
                f = sftp.openDirectory(file);
                cleanSftpDir(file, f);
                sftp.closeFile(f);
                sftp.removeDirectory(file);
            }
        }
        catch(Exception ex)
        {
            ex.printStackTrace();
            Log.debug("Removal failed (" + ex + ").");
            ex.printStackTrace();

            return -1;
        }

        return 1;
    }

    private void cleanSftpDir(String dir, SftpFile f2)
                       throws Exception
    {
        Log.out(">>>>>>>> cleanSftpDir: " + dir);

        Vector v = new Vector();

        while(sftp.listChildren(f2, v) > 0)
        {
            ;
        }

        String[] tmp = new String[v.size()];
        SftpFile[] f = new SftpFile[v.size()];
        Enumeration e = v.elements();
        int x = 0;

        while(e.hasMoreElements())
        {
            f[x] = ((SftpFile) e.nextElement());
            tmp[x] = f[x].getFilename();

            //Log.out("sftp delete: " + tmp[x]);
            //Log.out(">>>>>>>> remove file/dir: " + tmp[x]);
            if(f[x].isDirectory() && !tmp[x].endsWith("/"))
            {
                tmp[x] = tmp[x] + "/";
            }

            //sftp.closeFile(f[x]);
            x++;
        }

        if(tmp == null)
        {
            return;
        }

        for(int i = 0; i < tmp.length; i++)
        {
            if(tmp[i].equals("./") || tmp[i].equals("../"))
            {
                continue;
            }

            SftpFile f3;

            //System.out.println(dir+tmp[i]);
            if(tmp[i].endsWith("/"))
            {
                f3 = sftp.openDirectory(dir + tmp[i]);
            }
            else
            {
                f3 = sftp.openFile(dir + tmp[i], RW);
            }

            Log.out(">>>>>>>> remove file/dir: " + dir + tmp[i]);

            if(f3.isDirectory())
            {
                cleanSftpDir(dir + tmp[i], f3);

                //sftp.closeFile(f3);
                sftp.removeDirectory(dir + tmp[i]);
            }
            else
            {
                f3.delete();
            }
        }
    }

    public void sendRawCommand(String cmd)
    {
    }

    public void disconnect()
    {
        try 
	{
          sftp.stop();
          session.close();
          ssh.disconnect();
        } 
	catch (IOException e) 
	{
	  e.printStackTrace();
          Log.debug("SftpSshClient.disconnect()" + e);
        }
	
	connected = false;
    }

    public boolean isConnected()
    {
        return connected;
    }

    public String getPWD()
    {
        //Log.debug("PWD: " + pwd);
        return toSFTPDir(pwd);
    }

    public boolean mkdir(String dirName)
    {
        try
        {
            if(!dirName.endsWith("/"))
            {
                dirName = dirName + "/";
            }

            dirName = toSFTP(dirName);

            sftp.makeDirectory(dirName);

            fireDirectoryUpdate();

            return true;
        }
        catch(Exception ex)
        {
            Log.debug("Failed to create directory (" + ex + ").");

            return false;
        }
    }

    public void list(String outfile) throws IOException
    {
    }

    public boolean chdir(String p)
    {
        return chdir(p, true);
    }

    public boolean chdir(String p, boolean refresh)
    {
        String tmp = toSFTP(p);

        try
        {
            if(!tmp.endsWith("/"))
            {
                tmp = tmp + "/";
            }

            if(tmp.endsWith("../"))
            {
                return cdup();
            }

            SftpFile f = sftp.openDirectory(tmp);

            //if(!f.isDirectory()) return false;
            sftp.closeFile(f);

            pwd = toSFTP(f.getAbsolutePath());

            //Log.debug("chdir: " + getPWD());
            if(refresh)
            {
                fireDirectoryUpdate();
            }

            //System.out.println("chdir2: " + getPWD());
            //Log.debug("Changed path to: " + tmp);
            return true;
        }
        catch(Exception ex)
        {
            ex.printStackTrace();

            //System.out.println(tmp);
            Log.debug("Could not change directory (" + ex + ").");

            return false;
        }
    }

    public boolean cdup()
    {
        String tmp = pwd;

        if(pwd.endsWith("/"))
        {
            tmp = pwd.substring(0, pwd.lastIndexOf("/"));
        }

        return chdir(tmp.substring(0, tmp.lastIndexOf("/") + 1));
    }

    public boolean chdirNoRefresh(String p)
    {
        return chdir(p, false);
    }

    public String getLocalPath()
    {
        return path;
    }

    public boolean setLocalPath(String p)
    {
        if(StringUtils.isRelative(p))
        {
            p = path + p;
        }

        p = p.replace('\\', '/');

        //System.out.println(", local 2:" + p);
        File f = new File(p);

        if(f.exists())
        {
            try
            {
                path = f.getCanonicalPath();
                path = path.replace('\\', '/');

                if(!path.endsWith("/"))
                {
                    path = path + "/";
                }

                //System.out.println("localPath: "+path);
            }
            catch(IOException ex)
            {
                Log.debug("Error: can not get pathname (local)!");

                return false;
            }
        }
        else
        {
            Log.debug("(local) No such path: \"" + p + "\"");

            return false;
        }

        return true;
    }

    public String[] sortLs(String file)
    {
        try
        {
            String t = getPWD();

            SftpFile fx = sftp.openDirectory(t);

            //if(fx == null) System.out.println("Sftp: fx null");
            Vector v = new Vector();

            while(sftp.listChildren(fx, v) > 0)
            {
                ;
            }

            String[] tmp = new String[v.size()];
            SftpFile[] f = new SftpFile[v.size()];
            files = new String[tmp.length];
            size = new String[tmp.length];
            perms = new int[tmp.length];

            Enumeration e = v.elements();
            int x = 0;

            while(e.hasMoreElements())
            {
                f[x] = ((SftpFile) e.nextElement());
                tmp[x] = f[x].getFilename();

                size[x] = f[x].getAttributes().getSize().toString();

                //if(f[x].canWrite()) Log.debug(tmp[x]);
                //if(f[x].canWrite()) perms[x] = FtpConnection.W;
                //else
                if(!f[x].canRead())
                {
                    perms[x] = FtpConnection.DENIED;
                }
                else
                {
                    perms[x] = FtpConnection.R;
                }

                //Log.debugRaw(".");
                if(f[x].isDirectory() && !tmp[x].endsWith("/"))
                {
                    tmp[x] = tmp[x] + "/";
                }

                x++;
            }

            sftp.closeFile(fx);

            for(int i = 0; i < tmp.length; i++)
            {
                files[i] = tmp[i];
            }

            //Log.debug(" done.");
            return files;
        }
        catch(Exception ex)
        {
            //ex.printStackTrace();
            //Log.debug(" Error while listing directory: " + ex);
            return new String[0];
        }
    }

    public String[] sortSize(String file)
    {
        return size;
    }

    public int[] getPermissions(String file)
    {
        return perms;
    }

    public int handleUpload(String f)
    {
        if(Settings.getEnableSftpMultiThreading())
        {
            SftpTransfer t = new SftpTransfer(host, getLocalPath(), getPWD(),
                                              f, user, pass, listeners,
                                              Transfer.UPLOAD);
        }
        else
        {
            upload(f);
        }

        return 0;
    }

    public int handleDownload(String f)
    {
        if(Settings.getEnableSftpMultiThreading())
        {
            SftpTransfer t = new SftpTransfer(host, getLocalPath(), getPWD(),
                                              f, user, pass, listeners,
                                              Transfer.DOWNLOAD);
        }
        else
        {
            download(f);
        }

        return 0;
    }

    public int upload(String f)
    {
        String file = toSFTP(f);

        if(file.endsWith("/"))
        {
            String out = StringUtils.getDir(file);
            uploadDir(file, getLocalPath() + out);
            fireActionFinished(this);
        }
        else
        {
            String outfile = StringUtils.getFile(file);

            //System.out.println("transfer: " + file + ", " + getLocalPath() + outfile);
            work(getLocalPath() + outfile, file, true);
            fireActionFinished(this);
        }

        return 0;
    }

    public int download(String f)
    {