Hi, Someone asked on the perl.beginners maillist, a question about running gpg thru a script. Well I thought It could be run thru IPC::Open3, but there is a complication. Gpg grabs the tty of the perlscript, preventing IPC from operating.

If you run the script below(modified to edit a suitable name for your system), gpg, grabs the tty. If you enter "trust" followed by Enter, a new menu appears. That is the functionality I'm trying to perform thru the script.

If I print to the IN filehandle, it does nothing. I've noticed that the Crypt::GPG module uses IPC::Run and an undocumented gpg option called "--no-tty", but that aside, I just want to know how to access the STDIN to gpg.

On my system gpg is shown using /dev/pts/5, and I can't seem to be able to print to it. Is it possible thru some sort of fileno magic?

#!/usr/bin/perl
use warnings;
use strict;
use IPC::Open3;
use POSIX;

my $childpid = open3(\*IN, \*OUT, \*ERR, 'gpg --edit zentara');

#gpg grabs control of the tty here 

my $tty0 = ttyname(0); #STDIN 
my $tty1 = ttyname(1); #STDOUT 
print "$tty0  $tty1\n";
#  they are /dev/pts/5  on my machine 
#how do I print to STDIN of /dev/pts/5 ? 

print IN "trust\n";
 chomp(my $answer = <OUT>);
 print $answer;
 if ($answer =~ /Your decision/) {
 print IN "5\n";
 }else {
    print "decision error $!\n";
    exit;
}
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