Re: piping message thru demime

* Christian Ebert <[email protected]> :
> * Troy Piggins on Friday, February 17, 2006 at 08:08:47 +1000:
> > Looks like I spoke too soon.  It worked on the test message I was
> > using, but running the macro on other signed messages it doesn't
> > work!?
> 
> Might be the seconde issue discussed on
> <http://scifi.squawk.com/demime.html>.

I thought of that, but the message doesn't have multipart/mixed in
it.

> > Both messages are by the same author.  I'll have to tinker
> > some more.
> 
> Save the message separately and run demime on it from the command
> line.

Did that, no error.  All ran ok.

> > The error message spreads text all over the screen so it's hard to
> > make out what the error is.
> 
> I guess the error is:
> 
> unexpected EOF while looking for matching `''
> 
> and 'echo' is the problem.
> 
> So, a rather clumsy way of doing this might be to save the
> article to a file and run demime on that file:

THought of that but haven't yet sorted out a method of doing it.

> (I replaced article_as_string with raw_article_as_string)
> 
> define demime ()
> {
>   variable demime_tmp, raw_art, fp, art_demime;
>   demime_tmp = "/tmp/slrn_demime."+ string (getpid () );
>   raw_art = raw_article_as_string ();
>   fp = fopen (demime_tmp, "w");
>   if (fp == NULL)
>     error (_function_name () +": could not open "+demime_tmp);
>   fputs (raw_art, fp);
>   fclose (fp);
>   fp = popen ("/usr/local/bin/demime - < "+demime_tmp, "r");
>   if (fp == NULL)
>     error (_function_name () +": demime pipe failed" );
>   art_demime = strjoin (fgetslines (fp), "");
>   pclose (fp);
>   if (art_demime != "") replace_article (art_demime);
>   else error (_function_name () +": failed");
>   system ("rm "+demime_tmp);
> }

Excellent - this worked on all the ones I've tested on so far.
Thanks.

I have actually changed this a little so that it runs every time I
open an article, and if the article is signed it runs demime, if not
it just opens it unaltered:

%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
define demime ()
{
  variable xcharset =
extract_displayed_article_header("Content-Type");
  if (string_match(xcharset,"\\Cmultipart/signed",1))
  {
    variable demime_tmp, raw_art, fp, art_demime;
    demime_tmp = "/tmp/slrn_demime."+ string (getpid () );
    raw_art = raw_article_as_string ();
    fp = fopen (demime_tmp, "w");
    if (fp == NULL)
      error (_function_name () +": could not open "+demime_tmp);
    fputs (raw_art, fp);
    fclose (fp);
    fp = popen ("/usr/local/bin/demime - < "+demime_tmp, "r");
    if (fp == NULL)
      error (_function_name () +": demime pipe failed" );
    art_demime = strjoin (fgetslines (fp), "");
    pclose (fp);
    if (art_demime != "") replace_article (art_demime);
    else error (_function_name () +": failed");
    system ("rm "+demime_tmp);
  }
}

() = register_hook ("read_article_hook", "demime");
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%

> I'm sure this can be done much better, I'm not good at this slang
> stuff.

Better at it than me ;-)

> If you are pulling from a local server you could also run demime
> on the 'original' article after detecting its location by
> disecting the Xref header.

Thanks again Christian.  You've been most helpful and I've learned a
lot about s-lang along the way which will surely help for any future
ideas for macros I have.

If you don't mind, I'd like to post this somewhere on a webpage -
obviously I'll give you full credit.  It's just that I am sure there
are others who would like this functionality.

Haven't you ever come across slrn not handling pgp signed messages
correctly?  eg this :

Message-ID: <[email protected]>

-- 
Troy Piggins
Ubuntu 5.10  pkgs : kernel 2.6.12-9-386, postfix 2.2.4, procmail 3.22
Compiled from src : slrn 0.9.8.1/rt (score_color patch), mutt 1.5.11i
                      vim 6.4


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