bugGNU Octave - Bugs: bug #55515, pkg install has obtuse error...


bug #55515: pkg install has obtuse error messages when -forge option is forgotten

Submitted by:  Andrew Janke <apjanke>
Submitted on:  Fri 18 Jan 2019 11:31:19 PM UTC  
Category:  Octave Function Severity:  3 - Normal
Priority:  5 - Normal Item Group:  Unexpected Error
Status:  Fixed Assigned to:  None
Originator Name:  Open/Closed:  Closed
Release:  4.4.1 Operating System:  Any

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Tue 22 Jan 2019 02:33:00 PM UTC, comment #4:


Andrew Janke <apjanke>
Tue 22 Jan 2019 04:20:22 AM UTC, comment #3:

I modified the patch further to get away from using "! files_found" and instead use a positive assertion "not_local_files". I also commented out the test which relies on a unix operating system. Cygwin, for example, reports true for isunix but might not have executables like "file" or "cut". We need a test that is platform agnostic and can be implemented within Octave itself. A also added the bug number to the commit message. This allows us to quickly associate a changeset with a bug report and the reason for the code.

I checked in the code on the development branch (https://hg.savannah.gnu.org/hgweb/octave/rev/5bfbcbec6826).

Marking as fixed and closing report.

Rik <rik5>
Project Administrator
Sat 19 Jan 2019 03:01:58 AM UTC, comment #2:

I modified the file #46018 and upload a new version of that,
to make the coding style conform with GNU Octave's convention.

(file #46022)

Fri 18 Jan 2019 11:32:51 PM UTC, comment #1:

(These download attempts on bogus URLs can often take a long time, too. "pkg install some-bogus-file" can lock up the Octave UI for several seconds for me.)

Andrew Janke <apjanke>
Fri 18 Jan 2019 11:31:19 PM UTC, original submission:

When you forget the -forge option to a "pkg install" command, or have a typo in your file name, you get some obtuse error messages.

This is because for any input file, if it's not found on the local filesystem, pkg will unconditionally try to download it as a URL, even if it doesn't start with "http://" or "https://". And because of ISP DNS hijacking and "search page" redirection, downloading arbitrary bogus URLs will often succeed, but result in an HTML file instead of a tarball.

Here's a patch to produce some nicer error messages. It only attempts to download a file if the file argument is in URL format. And it checks the download to see if it's a tarball or HTML before trying to extract the archive.

With patch:

Andrew Janke <apjanke>


(Note: upload size limit is set to 16384 kB, after insertion of the required escape characters.)

Attach Files:

Attached Files
file #46022:  pkg-nicer-error-messages.patch added by None (4KiB - text/x-patch)
file #46018:  pkg-nicer-error-messages.patch added by apjanke (4KiB - application/octet-stream)


Depends on the following items: None found

Items that depend on this one: None found


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    Follow 4 latest changes.

    Date Changed by Updated Field Previous Value => Replaced by
    2019-01-22 rik5 StatusNone => Fixed
        Open/ClosedOpen => Closed
    2019-01-19 None Attached File- => Added pkg-nicer-error-messages.patch, #46022
    2019-01-18 apjanke Attached File- => Added pkg-nicer-error-messages.patch, #46018

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