mutt: Autoencrypt ohne Gnade

send-hook . unset crypt_autoencrypt
group -group pgp-users -addr aaa@bbb.de
group -group pgp-users -addr www@xxx.de
send-hook "%C pgp-users" set crypt_autoencrypt

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#!/usr/bin/perl -w
use strict;

sub load( $ ) {
	my $pgpcmd = shift;
	my $public = 0;
	my @group;

	open PIPE, "$pgpcmd |" or die;
	while( <PIPE> ) {
		s/\n//;

		if( $_ =~ m/^pub/ ) {
			my @pub = split /:/, $_;

			# Public key with encryption capability
			if( $pub[11] =~ m/E/ ) {
				$public = 1;
			} else {
				$public = 0;
			}
		}

		next if( $public == 0 );

		if( $_ =~ m/^uid/ ) {
			my @uid = split /:/, $_;
			my $mail = $uid[9];

			if( $mail =~ m/\S+\@\S+/ ) {
				$mail =~ s/.*<(\S+\@\S+)>.*/$1/;
				push @group, $mail;
			}
		}
	}
	close PIPE or die;

	return \@group;
}

sub result( $ ) {
	my $group = shift;

	foreach my $mail ( sort @{ $group } ) {
		print "group -group pgp-users -addr $mail\n";
	}

	print <<EOF

send-hook . unset crypt_autoencrypt
send-hook "%C pgp-users" set crypt_autoencrypt
EOF
;
}

sub main() {
	my $pgpgroup = load( "gpg2 --batch --with-colons --list-keys" );
	result( $pgpgroup );
}

main();