PureBasic Forums - English

Posted: **Sat Dec 20, 2025 3:38 pm**

Hello at all

I don't understand.... since one day i try to remove a file, with DeleteFTPFile() without succes

Since the beginning and always now, i read in the doc : "you must change the current directory and not write a full path"
I have asking to AI and it say to me, write this (with full path) :

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Chemin$ = "/var/www/MyCreations/Sites/Public/MySite/Dev/Sources/Php/"
IdSftp = OpenFTP(#PB_Any, "sftp://" + IP$, Login$, Mdp$)

If IdSftp
 
 If Not DeleteFTPFile(IdSftp, Chemin$ + "kcc.txt")
  Debug "Erreur"
 EndIf
 
EndIff

i was sure that not works, but i have when even try, and i'm surprising ...that works

Then when i do that, like FRED say to do (Changing current directory)

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Chemin$ = "/var/www/MyCreations/Sites/Public/MySite/Dev/Sources/Php/"
IdSftp = OpenFTP(#PB_Any, "sftp://" + IP$, Login$, Mdp$)

If IdSftp
 
 MaxParts = CountString(Chemin$, "/") + 1
 
 For i = 1 To MaxParts
  Part$ = StringField(Chemin$, i, "/")
  SetFTPDirectory(IdSftp, Part$)
  Debug GetFTPDirectory(IdSftp)
 Next 
 
 If Not DeleteFTPFile(IdSftp, "kcc.txt")
  Debug "Error"
 EndIf
 
EndIf

I have this result

/
/var/
/var/www/
/var/www/MyCreations/
/var/www/MyCreations/Sites/
/var/www/MyCreations/Sites/Public/
/var/www/MyCreations/Sites/Public/MySite/
/var/www/MyCreations/Sites/Public/MySite/Dev/
/var/www/MyCreations/Sites/Public/MySite/Dev/Sources/
/var/www/MyCreations/Sites/Public/MySite/Dev/Sources/Php/
/var/www/MyCreations/Sites/Public/MySite/Dev/Sources/Php/
Error

And that not works

This time...i'm really lost...what i must to do exactely ?

Have a good day

Posted: **Sat Dec 20, 2025 4:10 pm**

... it depends

The problem is that FTP/FTPS and SFTP are different.

In FTP/FTPS the delete command is DELE and in some server implementations only the filename is allowed as parameter.
So you need to change the directory before you can delete the file.

In SFTP the delete command is rm and you can use it with a full path as parameter.
SFTP has to do with ssh, the commands has more to do with a unix shell.

Maybe this should be handled by the PB procedures internally, so that you always can use a full path as parameter.

If you look in my libcurl examples, you will see:
FTPS_selete.pb:

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*cmdlist = curl_slist_append(#Null, "CWD " + GetPathPart(#FileToDelete$))
*cmdlist = curl_slist_append(*cmdlist, "DELE " + GetFilePart(#FileToDelete$))

So you don't need to change the directory step by step, one SetFTPDirectory() should be Ok.

SFTP_delete.pb:

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*cmdlist = curl_slist_append(#Null, "RM " + #FileToDelete$)

But ...
also your second code should work.
Are you sure that the file was there?

Posted: **Sat Dec 20, 2025 6:26 pm**

Thanks a lot MASTER to your very important for me answer

Yes i'm sure, i see with Filezilla, and Filllezilla have no problem for delete, create, etc...
For be sure i paste the path obtain in debug, in filezilla field and press return, and i see the file "Kcc.txt"

You have right, no need to set the current path in several time

, but, impossible to delete the file
In this code there is the three methods, and only the 3e works

This deletefile function is a disaster

If she is so complex and have several behaviour, why our good FRED not give the full exemples in the help ?

Code: Select all

Chemin$ = "/var/www/MyCreations/Sites/Public/MySite/Dev/Sources/Php/"
IdSftp = OpenFTP(#PB_Any, "sftp://" + IP$, Login$, Mdp$)

If IdSftp
 
 MaxParts = CountString(Chemin$, "/") + 1
 
 For i = 1 To MaxParts
  Part$ = StringField(Chemin$, i, "/")
  SetFTPDirectory(IdSftp, Part$)
  Debug GetFTPDirectory(IdSftp)
 Next 
 
 If Not DeleteFTPFile(IdSftp, "kcc.txt")
  Debug "Error 1"
 Else
  Debug "Ok 1" 
 EndIf
 
 CloseFTP(IdSftp)
 
EndIf

Debug #CRLF$ + "******************************" + #CRLF$

IdSftp = OpenFTP(#PB_Any, "sftp://" + IP$, Login$, Mdp$)

If IdSftp
 
 SetFTPDirectory(IdSftp, Chemin$)
 Debug GetFTPDirectory(IdSftp)
  
 If Not DeleteFTPFile(IdSftp, "kcc.txt")
  Debug "Error 2"
 Else
  Debug "Ok 2"
 EndIf
 
 CloseFTP(IdSftp)
 
EndIf

Debug #CRLF$ + "******************************" + #CRLF$

IdSftp = OpenFTP(#PB_Any, "sftp://" + IP$, Login$, Mdp$)

If IdSftp
 
 If Not DeleteFTPFile(IdSftp, Chemin$ + "kcc.txt")
  Debug "Error 3"
 Else
  Debug "Ok 3"
 EndIf
 
 CloseFTP(IdSftp)
 
EndIf

/
/var/
/var/www/
/var/www/MyCreations/
/var/www/MyCreations/Sites/
/var/www/MyCreations/Sites/Public/
/var/www/MyCreations/Sites/Public/MySite/
/var/www/MyCreations/Sites/Public/MySite/Dev/
/var/www/MyCreations/Sites/Public/MySite/Dev/Sources/
/var/www/MyCreations/Sites/Public/MySite/Dev/Sources/Php/
/var/www/MyCreations/Sites/Public/MySite/Dev/Sources/Php/
Error 1

******************************

/var/www/MyCreations/Sites/Public/MySite/Dev/Sources/Php/
Error 2

******************************

Ok 3

Posted: **Sat Dec 20, 2025 8:19 pm**

I only have one explanation for this 'bug':

DeleteFTPFile() does not respect that SFTP is used if a single file is the parameter.
I think it uses than DELE instead of RM.

If you have the possibilty to see he logs of the ftp server then you can check the used commands.
Unfortunately it is crypted, so you can not see the commands in wireshark.

I think Fred should inspect this.

Posted: **Sat Dec 20, 2025 8:36 pm**

If you have the possibilty to see he logs of the ftp server then you can check the used commands.

I not know how see it

For apache i use

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 tail -f /var/log/apache2/error.log

Other thing, have you an idea for my problem on your splendid code

viewtopic.php?p=649089#p649089

Posted: **Sat Dec 20, 2025 9:24 pm**

It depends on which ftp server is used.

Posted: **Sat Dec 20, 2025 9:34 pm**

I have IONOS cloud S, with ubuntu 22.4 ....and don't know more

Posted: **Sat Dec 20, 2025 9:43 pm**

If you use linux you have to get familar with linux

You can use

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ps ax | grep ftp

It should show you a line with the running ftp server maybe it's vsftpd
If it is so:

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tail -f /var/log/vsftpd.log

Or look inside /etc/vsftp.conf

Posted: **Sat Dec 20, 2025 9:50 pm**

Maybe you need to increaseor enable the loging of the ftp commands

https://manpages.ubuntu.com/manpages/fo ... onf.5.html

You have to set

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log_ftp_protocol=YES

inside the vsftpd.conf file and restart the ftp server

Posted: **Sat Dec 20, 2025 9:54 pm**

If you use linux you have to get familar with linux

I've been using PB for 30 years and I'm still not familiar with it.

And i not "use LINUX"...i use what IONOS want i use

For the server, apparently it's not what you say to me, i have error message of LINUX
I take a look tomorow if i found that

Posted: **Sat Dec 20, 2025 10:03 pm**

Sorry typo by me it is:

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ps ax | grep ftp

Posted: **Sun Dec 21, 2025 12:27 pm**

That works..

root@ubuntu:~# ps ax | grep ftp
110033 ? Ss 0:00 /usr/lib/openssh/sftp-server
110440 ? Ss 0:00 /usr/lib/openssh/sftp-server
111004 pts/0 S+ 0:00 grep --color=auto ftp

Apparently there are not a specific log for SFTP server, but i can read it in the SSH log
/var/log/auth.log

Posted: **Sun Dec 21, 2025 1:13 pm**

That's a bit more tricky.

The config is done in the file

/etc/ssh/sshd_config

There is an entry like:

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Subsystem sftp internal-sftp

You have to add or modify the log level:

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Subsystem sftp internal-sftp -l VERBOSE

and restart ssh

Maybe via

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/etc/init.d/ssh restart

That's the old way.
If it is not available you need

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systemctl restart ssh.service

Posted: **Mon Dec 22, 2025 5:03 pm**

Apparently in UBUNTU not recognize subsystem

UBUNTU wrote:Subsystem: command not found

Posted: **Mon Dec 22, 2025 5:22 pm**

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Subsystem sftp internal-sftp -l VERBOSE

Is not a command. And it should be already available as line in the file

/etc/ssh/sshd_config

You have to check if the loglevel is set, if not you need to add -l VERBOSE to the line.
and restart the program.

I hope you can edit a text file in ubuntu.

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SFTP Deletefile strange behaviour

SFTP Deletefile strange behaviour

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