[En-Nut-Discussion] FTP server support

Philipp Burch phip at hb9etc.ch
Sun Dec 14 13:54:00 CET 2014

Hi everyone!

Did anyone have had a chance to test passive FTP support?


On 26.11.2014 22:32, Philipp Burch wrote:
> Hi Ole!
> On 25.11.2014 15:08, Ole Reinhardt wrote:
>> Hi Philipp,
>> Am 25.11.2014 11:37, schrieb Philipp Burch:
>>> [...]
>> Unfortunately passive mode is completely broken in the FTP
>> implementation. Passive mode needs a listening socket to be opened right
>> in the moment, when the port number has been negotiated. Unfortunately
>> our passive mode implementation openes the listening socket at some
>> later (and wrong) stage?!?
>> I just asked on the mailinglist some time ago, if someone just
>> implemented a working passive mode, but it looks like nobody had...
>> Unfortunately I have not had yet the time to fix it by myself.
>> Any help here is very welcome!
> Passive mode is now implemented/fixed in r5915 in the devnut_tiva
> branch. It relies on the extended socket API described in the other
> thread, however.
> devnut_tiva$ svn commit -m 'Fixed passive mode for the FTP server. When
> the client issues PASV prior to a data transfer, a listening socket is
> opened in non-blocking mode to allow the client to connect. The data
> transfer is then done using this socket, which is closed afterwards with
> resetting the passive mode flag. This means that passive mode is used
> only for the data transfer right after the PASV command. FTP clients
> seem to respect this behaviour by sending PASV before LIST, STOR and
> RETR. Tested with the Linux ftp program and the Firefox FireFTP add-on.'
> Sending        nut/pro/ftpd.c
> Transmitting file data .
> Committed revision 5915.
> Cheers,
> Philipp
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