Re: Octave Web GUI

[viveks]

Hello:

The directory in which the perl-octave-cgi script stores the output files
must be world-writable, I think. The "permission denied" may mean that the
directory is not world-writable as the process is normally run as user
"nobody". This is more likely the case.

If any of the perl-octave/cgi script does not have execute permission,
then the form may not display at all and the user will get error message
(in case of perl) or the output will not at all show up (in case octave
script is not executable).

Apart from all these things, you have to take care of the security aspects
of allowing an execution of any submitted m-file.

Vivek...

On Sat, 24 Jun 2000, Tom Weichmann wrote:

> Hello,
> 
> I am developing a cgi web based GUI to Octave using PERL.  Things are going
> great so far, and I plan on making the source public...of course.  It works
> like this.  There is a dialog box, where you input your m-file, then click on
> the button to submit.  The cgi PERL script opens and writes the m-file
> to octave.  I then re-direct stdout to a file, and save any gnuplot output to
> a file as well.  Then the PERL generates a the html for a web page which
> includes the text and graphical output from octave, and sends this to the
> browser.  I have accomplishes all of this, but no matter what I am doing in
> my m-file, I get an error at the very end of the text output.  The following
> is an example of a *very* simple m-file, and its output to the web.
> 
> input----------------
> a=[1:1:10]
> b=[10:-1:1]
> 
> output--------------
> 
> a =
> 
>    1   2   3   4   5   6   7   8   9  10
> 
> b =
> 
>   10   9   8   7   6   5   4   3   2   1
> 
> error: Permission denied



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