Calling GPG from Perl from Procmail from...

[Frank Tobin]

-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA1

Dave Wilson, at 13:59 +0100 on Thu, 25 May 2000, wrote:

> I have a script that I would like to run on incoming email messages,
> conditional on the GnuPG signature on each incoming message being verified.

Already done in pgpenvelope:
http://pgpenvelope.sourceforge.net/

Note you don't need to use the Pine functionality of pgpenvelope if you
don't want.  It won't be sad.

The Perl module it uses is GnuPG::Interface; you may be interested in
looking into it:
http://GnuPG-Interface.sourceforge.net/

> As far as I can tell, GnuPG returns an exit code of zero iff the
> signature was successfully verified. The rest of the script is
> conditional on $good == 0. This works fine when I run it from the
> command line. However, when run on an incoming message from Procmail,
> STDERR presents this:

The exit status is a bad way to check if the signature was verified; the
exit status best represents that GnuPG exited properly.  Check the
signature status via the status-fd filehandle.  Read the DETAILS file with
GnuPG for, well, details.

> gpg: cannot open /dev/tty: Device not configured

You need to pass --no-tty.


- -- 
Frank Tobin		http://www.uiuc.edu/~ftobin/

"To learn what is good and what is to be valued,
those truths which cannot be shaken or changed."  Myst: The Book of Atrus

-----BEGIN PGP SIGNATURE-----
Version: GnuPG v1.0.1 (FreeBSD)
Comment: pgpenvelope 2.8.6 - http://pgpenvelope.sourceforge.net/

iEYEARECAAYFAjktK1QACgkQVv/RCiYMT6PFngCePvuUffdWe2nE1KqnN6o/6nkM
HN8AoKWx5Gn3QyJX1hWdc7xdL/Qv04sy
=+A7z
-----END PGP SIGNATURE-----