[Bug-wget] [bug #51284] Wget incorrectly parses FTP listing if filenames have leading spaces

[anonymous]

URL:
  <http://savannah.gnu.org/bugs/?51284>

                 Summary: Wget incorrectly parses FTP listing if filenames
have leading spaces
                 Project: GNU Wget
            Submitted by: None
            Submitted on: Wed 21 Jun 2017 09:12:56 AM UTC
                Category: Program Logic
                Severity: 3 - Normal
                Priority: 5 - Normal
                  Status: None
                 Privacy: Public
             Assigned to: None
         Originator Name: Roger Lainson
        Originator Email: address@hidden
             Open/Closed: Open
         Discussion Lock: Any
                 Release: 1.17.1
        Operating System: GNU/Linux
         Reproducibility: Every Time
           Fixed Release: None
         Planned Release: None
              Regression: None
           Work Required: None
          Patch Included: No

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Details:

Wget incorrectly parses the FTP listing if filenames have leading spaces. 

Given a remote file with a name like ' X' (admittedly unusual but legal in
Linux), Wget incorrectly determines the filename as 'X' from the LIST command,
and hence a RETR for the file fails with '550 Failed to open file' or
similar.

See attached output from Wget, and corresponding .listing file.

Worth noting that WinSCP has the same problem, as may other FTP clients. In
fact filenames like ' X' are not easy to create (without shell access to the
FTP server), so this is probably not a high priority problem.

A suggestion: rather than assume there are no leading spaces in the filename
(the current parsing method), maybe we could look for the directory '..' in
the listing, and use that to note the character position which is the start of
the filename.



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File Attachments:


-------------------------------------------------------
Date: Wed 21 Jun 2017 09:12:56 AM UTC  Name: Wget example - filename with
leading spaces.txt  Size: 4kB   By: None
(.listing has been renamed to ..listing to satisfy Windows)
<http://savannah.gnu.org/bugs/download.php?file_id=40963>
-------------------------------------------------------
Date: Wed 21 Jun 2017 09:12:56 AM UTC  Name: ..listing  Size: 186B   By: None
(.listing has been renamed to ..listing to satisfy Windows)
<http://savannah.gnu.org/bugs/download.php?file_id=40964>

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