fix STAT response code

[drakkan]

STAT should return 212 for directories and 213 for files

[codecov]

Codecov Report

Merging #195 (518224f) into master (aed438b) will increase coverage by 2.12%.
The diff coverage is 100.00%.

@@            Coverage Diff             @@
##           master     #195      +/-   ##
==========================================
+ Coverage   60.85%   62.97%   +2.12%     
==========================================
  Files           9        9              
  Lines         866      867       +1     
==========================================
+ Hits          527      546      +19     
+ Misses        267      246      -21     
- Partials       72       75       +3     

Impacted Files	Coverage Δ
handle_files.go	58.01% <100.00%> (+8.25%)	⬆️
handle_misc.go	83.51% <0.00%> (+1.09%)	⬆️

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[drakkan]

For directories pure-ftpd/proftpd also add "." and ".." to the response, for example:

STAT emptydir
212-Stato di emptydir:
 drwxr-xr-x   2 nicola   nicola       4096 Dec 12 11:13 .
 drwx------ 130 nicola   nicola      12288 Dec 12 16:36 ..
212 Fine dello stato

STAT /
212-Stato di /:
 drwxr-xr-x  17 root     root         4096 Sep 25 16:26 .
 drwxr-xr-x  17 root     root         4096 Sep 25 16:26 ..
 lrwxrwxrwx   1 root     root            7 Sep  2 22:30 bin -> usr/bin
 drwxr-xr-x   4 root     root         4096 Dec 10 07:13 boot
 drwxr-xr-x  22 root     root         3600 Dec 12 07:41 dev
....

the specs are not clear enough for me regarding this, should we add . and .. too? What do you think about? Thank you!

[drakkan]

I think we don't need to add . and .. many servers out of there don't include them, so the current behaviour seems fine

[fclairamb]

Perfect