changing incoming Subject: headers?

Scott Russell lnxgeek at
Wed Apr 17 20:48:04 UTC 2002

Thanks, this was the pointer I was looking for.

-- Scott

On Wed, Apr 17, 2002 at 04:44:34PM -0400, Jeffrey M. Vinocur wrote:
> On Wed, 17 Apr 2002, Scott Russell wrote:
> > I see with inn 2.3.2 I can use perl filters to do things. Is it possible to
> > strip out some contents of the Subject: header before it's posted to the
> > group?
> Sure (and doing what you describe with a regular expression in Perl would
> be quite easy).  Read the README.perl_hook file in your source tree.  
> Particularly:
>     Unlike the innd Perl filter, the nnrpd Perl filter can modify the %hdr
>     hash.  In fact, if the Perl variable $modify_headers is set to true
>     after filter_post() returns, the contents of the %hdr hash will be
>     written back to the article replacing the original headers.
>     filter_post() can therefore make any modifications it wishes to the
>     headers and those modifications will be reflected in the article as it's
>     finally posted.  The article body cannot be modified in this way; any
>     changes to $body will just be ignored.
> -- 
> Jeffrey M. Vinocur
> jeff at

 Scott Russell (lnxgeek at
 Linux Technology Center, System Admin, RHCE.
 T/L 441-9289 / External 919-543-9289

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