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CFTPTransferDlg v1.0 - The FTP Protocol

PJ Naughter

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4.44/5 (8 votes)

3 Mar 2000

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A dialog implementation that performs a FTP file transfer.

Download source files - 42 Kb

Sample Image - FTPTransferDlg.gif

Introduction

CFTPTransgerDlg provides an MFC dialog which performs FTP uploads and downloads similar to the Internet Explorer download dialog as shown above.

Contacting the Author

History

v1.0 (4 January 2000)

Initial public release.

Usage

To use CFTPTransferDlg in your project simply include FTPTransferDlg.cpp/.h from the test application in your application and #include "FTPTransferDlg.h" in whichever files you want to use the class in. You should also copy over all the IDS_FTPTRANSFER_.. string resources, the IDD_FTPTRANSFER dialog resource and the IDR_FTPTRANSFER_ANIMATION "avi" resource. To bring up the dialog to upload / download a specific file, just use some code like the following:

CFTPTransferDlg dlg;
dlg.m_sServer = _T("ftp.some-site.com");
dlg.m_sRemoteFile = _T("/somefile.ext");
dlg.m_sLocal = _T("c:\\somfile.ext");
dlg.m_bDownload = TRUE;
dlg.m_bBinary = TRUE;
if (dlg.DoModal() == IDOK)
   AfxMessageBox("File was downloaded successfully");

You should also have a look at the CFTPDlg::OnDownload() and CFTPDlg::OnUpload() code in the sample application.

Contacting the Author

PJ Naughter
Email: pjn@indigo..ie
Web: http://www.naughter.com
4th January 2000

License

This article has no explicit license attached to it but may contain usage terms in the article text or the download files themselves. If in doubt please contact the author via the discussion board below.

A list of licenses authors might use can be found here

Written By

PJ Naughter

United States

This member has not yet provided a Biography. Assume it's interesting and varied, and probably something to do with programming.

Comments and Discussions

pippo pioppo8-Dec-11 23:49

8-Dec-11 23:49

Hi,
I'll want to know what's kind of licence is applied to this project. Can I use it for free in commercial and/or open source code?

10x
Sandro

Sandro

johnTorresBarreto9-Jun-11 9:29

johnTorresBarreto

9-Jun-11 9:29

This project have a virus inside!!

Would it be better if the ftp upload would have been independednt of the GUI ?

Vikrant for VC++15-Nov-06 11:56

Vikrant for VC++

15-Nov-06 11:56

Would it be better if the ftp upload would have been independednt of the GUI ?

Re: Would it be better if the ftp upload would have been independednt of the GUI ?

pjnaughter3-May-07 13:26

3-May-07 13:26

The latest version on my web site at www.naughter.com implements the GUI part of the code in a separate class meaning that if you do not want any UI then you can use the code in that fashion

protocol implementation

raian_blore6-Dec-05 19:53

6-Dec-05 19:53

HI...i need help!!!

I have to do a project in c/c++ to implement a protocol which can be any protocol depends on us..can anyone guide me how to do that...plzzz

vivek

dynamica12316-Oct-05 4:07

16-Oct-05 4:07

help , when building the project ,this error appeared : fatal error LNK1104: cannot open file "mfc42u.lib" , i don't know what to do?

Re: help , please

Colby50025-Jul-06 4:03

25-Jul-06 4:03

After checking google I saw that there are two solutions to fix this.

One way is to install the unicode lib for VS6 or go to active config. under the build menu and select win32 release or debug, not the unicode version.

Hope this helps.

Uploading images

Jack_pt16-Jan-05 15:39

16-Jan-05 15:39

Can someone please tell me if this class handles the uploading of images? I've been using it and it has worked great until now. I needed to upload a gif and the file becomes unreadable. I tried it in both binary and ascii modes. Any ideas?

Jack

Re: Uploading images

Tomas Jakl19-Jan-05 14:35

19-Jan-05 14:35

I'm using this class to upload gif images and uploaded images are ok. Did you set m_bBinary = true?

Tomas Jakl

Text is one long line

Jack_pt11-Dec-04 15:37

11-Dec-04 15:37

When I write a text file to my hard disk, the lines are separated by \n and it displays as one would expect. But when I upload this file to my host, the text is displayed in one long line. It I add \r\n instead of just \n at the end of each line, the effect is reversed - my hard disk file is one long line and the remote file is displayed on separate lines. I've tried using both binary and ascii upload modes. This probably is not a problem with this project but since it only shows up when using it I thought it would be worth asking. Is there a way to have one file work for both situations? Currently I'm creating two files with the only difference being the \r in one of them.

Jack

Missing feature: Multiple file transfer

YoSilver1-May-04 8:46

1-May-04 8:46

First, thanks. Your work is great. Your code is clear and easy to read. And it works fine.

Second, imagine a situation when you need to upload a dozen of files. You create an instance of the dialog for each file and perform the upload. This means that FTP session is opened and closed for every file. This may not be considered an optimal solution. Could you please introduce multiple file upload feature in your class? For example, through the use of CStringArray to pass file pathnames.

Re: Missing feature: Multiple file transfer

pjnaughter1-May-04 11:21

1-May-04 11:21

Is already on the the TO DO list, but I cannot promise when / if it will be implemented.

Re: Missing feature: Multiple file transfer

pjnaughter9-May-04 4:36

9-May-04 4:36

You can avoid having to reconnect to the FTP server multiple times by creating the connection yourself and then calling CFTPTransferDlg::AttachToExisitingHandles before the dialog is show. This means that the dialog will not need to setup the connection itself. Then just implement this logic in a for loop to download whatever files you want.

Re: Missing feature: Multiple file transfer

Jack_pt27-Nov-04 15:16

27-Nov-04 15:16

I appreciate this class being written, not having much knowledge on the subject myself. But the lack of handling multiple files is a shortcoming. I've tried doing as pj mentions but can't get it to work. Can someone please give me some advice on how to create the connection as mentioned in his reply.

Jack

Re: Missing feature: Multiple file transfer

Jack_pt15-Dec-04 10:33

15-Dec-04 10:33

For anyone that might be interested in a workable solution, here's what I ended up doing. I created a map of structs holding all of the information for the files I want to upload. Then I just loop the upload code as shown. It works fine except that the upload dialog has to open and close for each file. But it is at least done in one connection.

for (itr = mapCfgs.begin(); itr != mapCfgs.end(); ++itr)
{
dlg.m_sServer = itr->second.GetFTPAddress();
dlg.m_sRemoteFile = itr->second.GetRemoteFile();
dlg.m_sLocalFile = itr->second.GetUploadFile();
dlg.m_sPassword = itr->second.GetPassWord();
dlg.m_sUserName = itr->second.GetUserName();
dlg.m_bDownload = FALSE;
dlg.m_bBinary = TRUE;

if (dlg.DoModal() == IDCANCEL)
{
return false;
}
}

Jack

alan9320-Nov-03 4:10

20-Nov-03 4:10

If the dialog is hidden and the values (password etc..) are hard-coded. Am I right in assuming that these could be exposed?

I guess I could scramble them with hex?

I'm trying to make an auto-update program. Is there a better way?

Re: Security Issue

pjnaughter20-Nov-03 4:55

20-Nov-03 4:55

Couple of things:

1) What dialog are you talking about. In the sample app I provide a dialog for filling in the values for testing purpoes but in a real program you would not require this.

2) If you are hardcoding these values into your program, then the same issues apply to these values as they would to any other type of password / secure information which you want to embed into your code.

This is an age old problem and there are a number of articles on codeproject on this. You can go from something like modulo arithmetic to simple XOR masks to more complicated but secure private key encryption mechanisms, but the problem will remain of having a password variable lying around in your address space for some time. You can get quite advanced on this by putting in anti debugging envelopes into your program (as used by dongle protection software) but in the end this will just mean that it will take a hacker 10 hours instead of 5 hours to crack<gg>. I will produce an update to the class sometime soon to ensure that the username and password are only kept in memory for as short as possible.

Regards,

Re: Security Issue

alan9320-Nov-03 5:51

20-Nov-03 5:51

Interesting, and helpful,

thanks

girishnadig29-Aug-03 1:17

29-Aug-03 1:17

Hi My application needs file transfer service from client-to-server and vice-versa. I have written an FTP client program to do this,but the commands OpenFile and GetFile are not working. When i retrieve GetLastError after GetFile function its generating error code 12003,ERROR_SXS_ASSEMBLY_NOTSUPPORTED. MSDN says its due to some side by side assembly components, COMCTL32.COM, VCNTL.COM and DLLPLUS.COM. If I replace these dlls with the new one will FTP work, kindly answer.

Regards
Girish

It is too slow compared to ordinary downloading

11-Jun-02 18:53

11-Jun-02 18:53

Hi,
Hope this downloading is very slow when i compared with one file by using default downloading.So,can you suggest the way or method how to improve to download fast than ordinary downloading or equilant time it should take.
But it should not take more time than ordinary downloading.
But this is a good logic.
Thanking you.
Smile | :)

Smile | :)

Re: It is too slow compared to ordinary downloading

pjnaughter22-Jan-03 0:26

22-Jan-03 0:26

I've tried the code on a number of different machines and the speed seems fine. What I would suggest you do is make sure you have the latest version from my web site (www.naughter.com).

Is it work on proxy

4-May-02 2:36

4-May-02 2:36

I have using a proxy server to connect internet. Is it work on proxy server? how?

Re: Is it work on proxy

pjnaughter22-Jan-03 0:28

22-Jan-03 0:28

The class has the same limited support for FTP proxies as Internet Explorer has.

Paul Pang17-Mar-02 20:16

17-Mar-02 20:16

I need to write a command like "type c 950" for AS400 server.
How could i do it? Smile | :)

Smile | :)

Re: ftp command

pjnaughter22-Jan-03 0:29

22-Jan-03 0:29

You need to use the wininet "FTPCommand" API. You will need to have an up to date version of wininet for this.

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