Secure FTP From ColdFusion 9 Using Java FTP Client

Question

This is a followup of this question. The correct answer leads to an attempt to use the SFTPClient class in the Apache Commons library.

I can connect. The next step is to upload a file. There is a lot of reference material with sample source code. I used this one as my guide. It's not secure FTP, but it's simple to follow. This is the java code I was attempting to emulate:

import java.io.File;
import java.io.FileInputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import org.apache.commons.net.ftp.FTP;
import org.apache.commons.net.ftp.FTPClient;

public class FTPUploadFileDemo {

    public static void main(String[] args) {
        String server = "www.myserver.com";
        int port = 21;
        String user = "user";
        String pass = "pass";

        FTPClient ftpClient = new FTPClient();
        try {

            ftpClient.connect(server, port);
            ftpClient.login(user, pass);
            ftpClient.enterLocalPassiveMode();

            ftpClient.setFileType(FTP.BINARY_FILE_TYPE);
            // This was considered unnecessary because I was sending n ASCII file

            // APPROACH #1: uploads first file using an InputStream
            File firstLocalFile = new File("D:/Test/Projects.zip");

            String firstRemoteFile = "Projects.zip";
            InputStream inputStream = new FileInputStream(firstLocalFile);

            System.out.println("Start uploading first file");
            boolean done = ftpClient.storeFile(firstRemoteFile, inputStream);
            inputStream.close();
and some more code that's not relevent,

This is my ColdFusion equivalent:

localFilename = "d:\dw\dwtest\dan\textfiles\randomText.txt"; 
remoteFileName = "randomText.txt";

javaFtpClient = CreateObject("java", 
  "org.apache.commons.net.ftp.FTPSClient").init("SSL", JavaCast("boolean",true));
// note that I am using a secure client

 javaInputFile = createObject("java", "java.io.File").init(localFilename); 
 javaInputStream = createObject("java", "java.io.FileInputStream").init(javaInputFile); 

// connect and login 
javaFtpClient.connect(JavaCast("string","something"),990); 
loginStatus = javaFtpClient.login('valid username','valid password');
writeoutput("login status " & loginStatus & "<br>"); 
javaFtpClient.enterLocalPassiveMode();


uploadStatus = javaFtpClient.storeFile(remoteFileName, javaInputStream); 
writeOutput("upload status " & uploadStatus & "<br>"); javaInputStream.close();

// logout and disconnect 
javaFtpClient.logout(); 
javaFtpClient.disconnect();

writeoutput("done" & "<br>");

The output shows a successful login and an unsuccessful file upload. The lack of file was confirmed using FileZilla.

Can anybody see why the file was not uploaded?

Do you have access to the FTP server's console/log? Also, does it throw an exception? — Alex, Jan 14 '16 at 19:51
I don't have access, but I might know someone who does. For the CF Code, given that the output includes "done", from the last `writeoutput` command, I assume there were no exceptions. Also, I did experience exceptions along the way. — Dan Bracuk, Jan 14 '16 at 20:06
I'ts a shot in the dark, but from my notes we had to set the `javaFtpClient.execPROT("P")` with the server we were working with. You may see something similar in your FileZilla console. — Twillen, Jan 14 '16 at 20:13
@Twillen, compliments on the accuracy of your shooting in the dark. Addding `javaFtpClient.execPROT("P");` after 'javaFtpClient.enterLocalPassiveMode();' solved the problem. Please post it as an answer. — Dan Bracuk, Jan 14 '16 at 20:46

score 4 · Accepted Answer · answered Jan 14 '16 at 20:55

4

The command javaFtpClient.execProt("P") is required. Setting PROT to "P" sets the Data Channel Protection Level to private.

answered Jan 14 '16 at 20:55

Twillen

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Secure FTP From ColdFusion 9 Using Java FTP Client

1 Answers1