Hi all,

Using either the legacy upload tool, or the new upload widget, the
following FTP URL *appears* to load into Galaxy correctly giving
a green history entry.

However, on closer inspection it is an empty file with this peep text:

Unable to fetch
ftp://ftp.sanger.ac.uk/pub/pathogens/Bursaphelenchus/xylophilus/Assembly-v1.2/BurXv1.2.supercontigs.fa.gz
[Errno ftp error] 550 pathogens: No such file or directory

Clearly this should have been treated as a failure (red history entry).

Should I file this as a bug on Trello?

It seems there is a problem with the Sanger folder permissions which
trips up Galaxy and curl (but does not bother Firefox and wget):

$ curl -O 
ftp://ftp.sanger.ac.uk/pub/pathogens/Bursaphelenchus/xylophilus/Assembly-v1.2/BurXv1.2.supercontigs.fa.gz
  % Total    % Received % Xferd  Average Speed   Time    Time     Time  Current
                                 Dload  Upload   Total   Spent    Left  Speed
  0     0    0     0    0     0      0      0 --:--:-- --:--:-- --:--:--     0
curl: (9) Server denied you to change to the given directory

Using curl -v for verbose mode it tries to walk the path (as per the
https://www.ietf.org/rfc/rfc1738.txt standard) and fails with the
command "CWD pathogens" matching the Galaxy error.

The alternative curl FTP methods work:

$ curl -O 
ftp://ftp.sanger.ac.uk/pub/pathogens/Bursaphelenchus/xylophilus/Assembly-v1.2/BurXv1.2.supercontigs.fa.gz
--ftp-method nocwd
  % Total    % Received % Xferd  Average Speed   Time    Time     Time  Current
                                 Dload  Upload   Total   Spent    Left  Speed
100 21.8M  100 21.8M    0     0  7656k      0  0:00:02  0:00:02 --:--:-- 7654k

and:

$ curl -O 
ftp://ftp.sanger.ac.uk/pub/pathogens/Bursaphelenchus/xylophilus/Assembly-v1.2/BurXv1.2.supercontigs.fa.gz
--ftp-method singlecwd
  % Total    % Received % Xferd  Average Speed   Time    Time     Time  Current
                                 Dload  Upload   Total   Spent    Left  Speed
100 21.8M  100 21.8M    0     0  7767k      0  0:00:02  0:00:02 --:--:-- 7766k

You can also trick curl by replacing (some of the) slashes with
the escaped version %2f which has the result of combining the
CWD commands, e.g.

$ curl -O 
ftp://ftp.sanger.ac.uk/pub%2fpathogens%2fBursaphelenchus%2fxylophilus%2fAssembly-v1.2/BurXv1.2.supercontigs.fa.gz
  % Total    % Received % Xferd  Average Speed   Time    Time     Time  Current
                                 Dload  Upload   Total   Spent    Left  Speed
100 21.8M  100 21.8M    0     0  6827k      0  0:00:03  0:00:03 --:--:-- 6829k

This encoding trick does not seem to work within Galaxy.

I plan to report this to Sanger tomorrow. Should they fix this quickly
additional test cases might be useful (does Galaxy have an FTP
server which might be used for testing data importing like this?).

Is this a common issue? Should Galaxy automatically use an FTP
CWD workaround in this situation?

Regards,

Peter
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