[Proftpd-user] client didn't get an error when reaching the limit if quotalimittype is set to hard.

[Dieter B. <pr...@bl...>]

Hello,

I have a working ProFTPD configuration with a MariaDB backend.
The users and their quotas are stored in the database.

Files are transferred only via SFTP/SCP. 

If I set the “quotalimittype” to “hard” and the quota is reached during
the upload, the file is deleted from the server, as I would expect and I
see a logentry like: "STOR: quota reached: 'filename' removed".

However, the client does not receive a notification about this.
From the client's perspective, the upload was successful.
The docu says, the client should be informed: http://www.proftpd.org/docs/contrib/mod_quotatab.html#QuotaLookup:~:text=and%20a%20message%20returned%20to%20the%20client%20informing%20them%20of%20this%2E

I would expect the client to receive an error message at this point.

In the draft https://datatracker.ietf.org/doc/html/draft-ietf-secsh-filexfer-13#section-9.1, there is the error code SSH_FX_QUOTA_EXCEEDED (15), which, in my opinion, should be returned here.

May this be a bug or are my exptectations wrong?

Hear are a few lines from my configuration: 

--snip--
  # Quota support
  QuotaEngine             on
  QuotaOptions            ScanOnLogin
  QuotaShowQuotas         on
  QuotaDisplayUnits       Mb
  SQLNamedQuery get-quota-limit FREEFORM "CALL proc_docker_proftpd_upload_quota( '%U' );"
  QuotaLimitTable         sql:/get-quota-limit
  QuotaTallyTable         file:/var/run/proftpd-quota.tallytab
--snip--

The procedure proc_docker_proftpd_upload_quota returns a line like:

username, user, true, hard, 100000000, 0, 0, 0, 0, 0


-- 
Regards

  Dieter

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