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Java Client using FTP over SSL (Explicit)

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http://www.kochnielsen.dk/kurt/blog/?p=162

Java Client using FTP over SSL (Explicit)

FTPS extends the FTP protocol with support for SSL and TLS.

Explicit security requires that the FTP client sends an explicit command (AUTH SSL or AUTH TLS) to the FTP server to initiate a secure control connection. The default FTP server port is used. The data connection can also be secured using the commands PBSZ and PROT.

The example code listed below uses Jakarta Commons Net and secures the control connection and data connection using TLS.

import java.io.FileInputStream;import java.io.IOException;import java.io.InputStream;import java.security.NoSuchAlgorithmException;import org.apache.commons.net.ftp.FTPReply;import org.apache.commons.net.ftp.FTPSClient;public class FTPSTest {  public void putFile(String host,                      int port,                      String username,                      String password,                      String localFilename,                      String remoteFilename) {    try {      FTPSClient ftpClient = new FTPSClient(false);      // Connect to host      ftpClient.connect(host, port);      int reply = ftpClient.getReplyCode();      if (FTPReply.isPositiveCompletion(reply)) {        // Login        if (ftpClient.login(username, password)) {          // Set protection buffer size          ftpClient.execPBSZ(0);          // Set data channel protection to private          ftpClient.execPROT("P");          // Enter local passive mode          ftpClient.enterLocalPassiveMode();          // Store file on host  InputStream is = new FileInputStream(localFilename);  if (ftpClient.storeFile(remoteFilename, is)) {    is.close();  } else {    System.out.println("Could not store file");  }  // Logout  ftpClient.logout();        } else {          System.out.println("FTP login failed");        }        // Disconnect    ftpClient.disconnect();      } else {        System.out.println("FTP connect to host failed");      }    } catch (IOException ioe) {      System.out.println("FTP client received network error");    } catch (NoSuchAlgorithmException nsae) {      System.out.println("FTP client could not use SSL algorithm");    }  }}

The resulting FTP server log 

CONNECT [     0] - Incoming connection requestCONNECT [     0] - FTP Connection request acceptedCOMMAND [     0] - AUTH TLS  REPLY [     0] - 234 Authentication method acceptedCONNECT [     0] - SSL connection using TLSv1/SSLv3 (RC4-MD5)CONNECT [     0] - SSL connection establishedCOMMAND [     0] - USER test  REPLY [     0] - 331 User test, password pleaseCOMMAND [     0] - PASS ***********CONNECT [     0] - Native user 'test' authenticated  REPLY [     0] - 230 Password Ok, User logged inCOMMAND [     0] - PBSZ 0  REPLY [     0] - 200 PBSZ=0COMMAND [     0] - PROT P  REPLY [     0] - 200 PROT P OK, data channel will be securedCOMMAND [     0] - PASV  REPLY [     0] - 227 Entering Passive Mode (127,0,0,1,43,41)COMMAND [     0] - STOR test.txt  REPLY [     0] - 150 Opening data connectionCONNECT [     0] - SSL connection using TLSv1/SSLv3 (RC4-MD5)CONNECT [     0] - SSL data connection established SYSTEM [     0] - Successfully stored file at 'c:\ftp\test.txt'  REPLY [     0] - 226 Transfer completeCOMMAND [     0] - QUITCONNECT [     0] - Connection terminated

 

 

==============

http://www.iteye.com/problems/69716

package examples.ftp;

import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.io.PrintWriter;
import java.security.NoSuchAlgorithmException;

import javax.net.SocketFactory;
import javax.net.ssl.SSLSocketFactory;

import org.apache.commons.net.PrintCommandListener;
import org.apache.commons.net.ftp.FTPClient;
import org.apache.commons.net.ftp.FTPConnectionClosedException;
import org.apache.commons.net.ftp.FTPFile;
import org.apache.commons.net.ftp.FTPReply;
import org.apache.commons.net.ftp.FTPSClient;

public final class FTPSExample {
public static final String USAGE = "Usage: ftp [-s] [-b] <127.0.0.1> <shanming> <shanming> <test.txt> <shanming.txt>\n"
+ "\nDefault behavior is to download a file and use ASCII transfer mode.\n"
+ "\t-s store file on server (upload)\n"
+ "\t-b use binary transfer mode\n";

public static final void main(String[] args)
throws NoSuchAlgorithmException {
int base = 0;
boolean storeFile = false, binaryTransfer = false, error = false;
String server, username, password, remote, local;
String protocol = "SSL"; // SSL/TLS 
FTPClient ftps;
for (base = 0; base < args.length; base++) {
if (args[base].startsWith("-s"))
storeFile = true;
else if (args[base].startsWith("-b"))
binaryTransfer = true;
else
break;
}
if ((args.length - base) != 5) {
System.err.println(USAGE);
System.exit(1);
}
server = args[base++];
username = args[base++];
password = args[base++];
remote = args[base++];
local = args[base];
ftps = new FTPSClient(protocol);
ftps.enterLocalPassiveMode();
ftps.addProtocolCommandListener(new PrintCommandListener(new PrintWriter(System.out)));
try {
int reply;
ftps.connect(server);
System.out.println("Connected to " + server + ".");
// After connection attempt, you should check the reply code to verify 
// success. 
reply = ftps.getReplyCode();
if (!FTPReply.isPositiveCompletion(reply)) {
ftps.disconnect();
System.err.println("FTP server refused connection.");
System.exit(1);
}
} catch (IOException e) {
if (ftps.isConnected()) {
try {
ftps.disconnect();
} catch (IOException f) {
// do nothing 
}
}
System.err.println("Could not connect to server.");
e.printStackTrace();
System.exit(1);
}
__main: try {
ftps.setBufferSize(1000);
if (!ftps.login(username, password,"990")) {
ftps.logout();
error = true;
break __main;
}

System.out.println("Remote system is: " + ftps.getSystemName());
System.out.println("Working directory is: " + ftps.printWorkingDirectory());
System.out.println("default port is: " + ftps.getDefaultPort());
//if (binaryTransfer)
//ftps.setFileType(FTP.BINARY_FILE_TYPE);
// Use passive mode as default because most of us are 
// behind firewalls these days. 
SocketFactory factory = SSLSocketFactory.getDefault();
ftps.setSocketFactory(factory);
FTPFile[] files=ftps.listFiles();
for(FTPFile file:files){
System.out.println("ftpfile name is :" + file.getName());
}

if (storeFile) {
System.out.println("Here is upload!");
ftps.changeWorkingDirectory("/");
InputStream input;
input = new FileInputStream(local);
ftps.storeFile(remote, input);
input.close();
} else {
System.out.println("Here is download!");
ftps.changeWorkingDirectory("/");
OutputStream output;
output = new FileOutputStream(local);
ftps.retrieveFile(remote, output);
output.close();
}
ftps.logout();
} catch (FTPConnectionClosedException e)
{
error = true;
System.err.println("Server closed connection.");
e.printStackTrace();
} catch (IOException e) {
error = true;
e.printStackTrace();
} finally {
if (ftps.isConnected()) {
try {
ftps.disconnect();
} catch (IOException f)

{
// do nothing 
}
}
}
System.exit(error ? 1 : 0);
} // end main 
}
==============================
输出结果：
220-FileZilla Server version 0.9.39 beta
220-written by Tim Kosse (Tim.Kosse@gmx.de)
220 Please visit http://sourceforge.net/projects/filezilla/
AUTH TLS
234 Using authentication type TLS
Connected to 127.0.0.1.
USER shanming
331 Password required for shanming
PASS shanming
230 Logged on
SYST
215 UNIX emulated by FileZilla
Remote system is: UNIX emulated by FileZilla
PWD
257 "/" is current directory.
Working directory is: /
default port is: 21
PORT 127,0,0,1,9,238
200 Port command successful
LIST
521 PROT P required
Here is download!
CWD /
250 CWD successful. "/" is current directory.
PORT 127,0,0,1,9,239
200 Port command successful
RETR ss.txt
521 PROT P required
QUIT
221 Goodbye

 

=================

http://blog.csdn.net/wangxiaomei2008/article/details/6568007

本例中我们以Apache FTPServer为例进行发布FTPS， 也以Apache FTPClient为例进行客户端连接FTPS。

 

首先我们启动FTPServer

 

[java] view plaincopyprint?
  1. package examples.ftpServer;  
  2. import java.io.File;  
  3. import org.apache.ftpserver.FtpServer;  
  4. import org.apache.ftpserver.FtpServerFactory;  
  5. import org.apache.ftpserver.ftplet.FtpException;  
  6. import org.apache.ftpserver.listener.ListenerFactory;  
  7. import org.apache.ftpserver.ssl.SslConfigurationFactory;  
  8. import org.apache.ftpserver.usermanager.PropertiesUserManagerFactory;  
  9. public class StartFTPS  
  10. {  
  11.     /** 
  12.      * 通过程序启动FTP with SSL认证，以Apache FTPServer为例 
  13.      * @param args 
  14.      * @throws FtpException  
  15.      */  
  16.     public static void main(String[] args) throws FtpException  
  17.     {  
  18.         // TODO Auto-generated method stub  
  19.         FtpServerFactory serverFactory = new FtpServerFactory();  
  20.           
  21.         ListenerFactory factory = new ListenerFactory();  
  22.                   
  23.         // set the port of the listener  
  24.         factory.setPort(2221);  
  25.         // define SSL configuration  
  26.         SslConfigurationFactory ssl = new SslConfigurationFactory();  
  27.         ssl.setKeystoreFile(new File("F:/FTP/ftpserver-1.0.5/apache-ftpserver-1.0.5/res/kserver.keystore"));  
  28.         ssl.setKeystorePassword("123456");  
  29.           
  30. //      ssl.setTruststoreFile(new File("F:/FTP/ftpserver-1.0.5/apache-ftpserver-1.0.5/res/tserver.keystore"));  
  31. //      ssl.setKeystorePassword("123456");  
  32.   
  33.         // set the SSL configuration for the listener  
  34.         factory.setSslConfiguration(ssl.createSslConfiguration());  
  35.         factory.setImplicitSsl(true);  
  36.           
  37.           
  38.         // replace the default listener   
  39.         serverFactory.addListener("default", factory.createListener());  
  40.                   
  41.         PropertiesUserManagerFactory userManagerFactory = new PropertiesUserManagerFactory();  
  42.         userManagerFactory.setFile(new File("F:/FTP/ftpserver-1.0.5/apache-ftpserver-1.0.5/res/conf/users.properties"));  
  43.                   
  44.         serverFactory.setUserManager(userManagerFactory.createUserManager());  
  45.                   
  46.         // start the server   
  47.         FtpServer server = serverFactory.createServer();   
  48.                   
  49.         server.start();  
  50.     }  
  51. }  

 

 

然后是客户端连接FTPS

[c-sharp] view plaincopyprint?
  1. package examples.ftpClient;  
  2. import java.io.FileInputStream;  
  3. import java.io.IOException;  
  4. import java.io.PrintWriter;  
  5. import java.security.KeyStore;  
  6. import javax.net.ssl.KeyManager;  
  7. import javax.net.ssl.KeyManagerFactory;  
  8. import javax.net.ssl.TrustManager;  
  9. import javax.net.ssl.TrustManagerFactory;  
  10. import org.apache.commons.net.PrintCommandListener;  
  11. import org.apache.commons.net.ftp.FTPSClient;  
  12. public class ConnectFTPS  
  13. {  
  14.     private static FTPSClient ftpsClient;  
  15.     private static final String trust_path = "F:/FTP/ftpserver-1.0.5/apache-ftpserver-1.0.5/res/kclient.keystore";  
  16.     private static final String trust_pw = "123456";  
  17.     private static final String key_path = "F:/FTP/ftpserver-1.0.5/apache-ftpserver-1.0.5/res/tclient.keystore";  
  18.     private static final String key_pw = "123456";  
  19.     private static final String serverIP = "127.0.0.1";  
  20.     private static final int serverPort = 2221;  
  21.     private static final int defaultTimeout = 10000;  
  22.     private static final int soTimeout = 900000;  
  23.     private static final int dataTimeout = 5000;  
  24.     /** 
  25.      * 测试连接FTP With SSL，以Apache FTPServer为例 
  26.      * @param args 
  27.      * @throws Exception 
  28.      */  
  29.     public static void main(String[] args) throws Exception  
  30.     {  
  31.         if (!connect("active"))  
  32.         {  
  33.             connect("passive");  
  34.         }  
  35.         FileInputStream fs = new FileInputStream(trust_path);  
  36.         System.out.println("storeFile: " + ftpsClient.storeFile("test_file", fs));  
  37.         fs.close();  
  38.         ftpsClient.disconnect();  
  39.     }  
  40.      /** 
  41.       * 登陆FTP 
  42.       * @param active 
  43.       * @return 
  44.       * @throws Exception 
  45.       */  
  46.     private static boolean connect(String active) throws Exception  
  47.     {  
  48.         ftpsClient = new FTPSClient(true);  
  49.         ftpsClient.addProtocolCommandListener(new PrintCommandListener(new PrintWriter(System.out)));  
  50.         ftpsClient.setKeyManager(getKeyManager());  
  51.         //ftpsClient.setTrustManager(getTrustManager());  
  52.         ftpsClient.setDefaultTimeout(defaultTimeout);  
  53.         ftpsClient.connect(serverIP, serverPort);  
  54.         System.out.println("已经连接FTP");  
  55.         ftpsClient.setSoTimeout(soTimeout);  
  56.         ftpsClient.getReplyCode();  
  57.         ftpsClient.execPBSZ(0);  
  58.         ftpsClient.execPROT("P");  
  59.         ftpsClient.login("admin", "admin");  
  60.         ftpsClient.changeWorkingDirectory("/");  
  61.         ftpsClient.setDataTimeout(dataTimeout);  
  62.         if (active.equalsIgnoreCase("active"))  
  63.         {  
  64.             ftpsClient.enterLocalActiveMode();  
  65.         } else  
  66.         {  
  67.             ftpsClient.enterLocalPassiveMode();  
  68.         }  
  69.           
  70.         System.out.println("已经登陆FTP");  
  71.         return testLink();  
  72.     }  
  73.     /** 
  74.      * 遍历FTP文件 
  75.      * @return 
  76.      */  
  77.     private static boolean testLink()  
  78.     {  
  79.         long t1 = System.currentTimeMillis();  
  80.         try  
  81.         {  
  82.             System.out.println("List file length:" + ftpsClient.listFiles().length);  
  83.         } catch (IOException e)  
  84.         {  
  85.             System.out.println(e.getMessage());  
  86.             long t2 = System.currentTimeMillis();  
  87.             long t = (t2 - t1) / 1000;  
  88.             System.out.println("t: " + t);  
  89.             try  
  90.             {  
  91.                 ftpsClient.disconnect();  
  92.             } catch (IOException e1)  
  93.             {  
  94.                 e1.printStackTrace();  
  95.             }  
  96.             return false;  
  97.         }  
  98.         return true;  
  99.     }  
  100.     private static KeyManager getKeyManager() throws Exception  
  101.     {  
  102.         KeyStore key_ks = KeyStore.getInstance("JKS");  
  103.         key_ks.load(new FileInputStream(key_path), key_pw.toCharArray());  
  104.         KeyManagerFactory kmf = KeyManagerFactory.getInstance(KeyManagerFactory.getDefaultAlgorithm());  
  105.         kmf.init(key_ks, key_pw.toCharArray());  
  106.         KeyManager[] km = kmf.getKeyManagers();  
  107.         System.out.println("km len: " + km.length);  
  108.         return km[0];  
  109.     }  
  110.     private static TrustManager getTrustManager() throws Exception  
  111.     {  
  112.         KeyStore trust_ks = KeyStore.getInstance("JKS");  
  113.         trust_ks.load(new FileInputStream(trust_path), trust_pw.toCharArray());  
  114.         TrustManagerFactory tf = TrustManagerFactory.getInstance(TrustManagerFactory.getDefaultAlgorithm());  
  115.         tf.init(trust_ks);  
  116.         TrustManager[] tm = tf.getTrustManagers();  
  117.         System.out.println("tm len: " + tm.length);  
  118.         return tm[0];  
  119.     }  
  120. }  

 

以上实例是经过验证，如果对于其中有些概念性问题或者SSL证书的问题，可以参考先前的文章。

 

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