cannot open /dev/tty: No such device or address

[Steve Butler]

There is a similar error message when driving gpg from cron.  Try the
--no-tty option.

-----Original Message-----
From: Asier Urrutia [mailto:asier at alphyra.ie]
Sent: Wednesday, October 29, 2003 1:00 PM
To: gnupg-users at gnupg.org
Subject: gpg:cannot open /dev/tty: No such device or address


Hi all,

	I've built a perl script in order to parse a mailbox, save
attachments from emails and decrypt them. If I run the perl script from a
shell...

bash$ cat mailbox | mbox-parser.pl
Reading passphrase from file descriptor 11

You need a passphrase to unlock the secret key for
user: "GPG user (GPG user's key) <gpg-user at domain.com>"
1024-bit ELG-E key, ID D49D1DBC, created 2003-10-28 (main key ID 7724AA8E)
bash$
	
	...it works fine. However, I am unable to get rid of the gpg
passphrase output. I tried to redirect STDOUT to a log file, but doesn't
make any difference.

	The main problem is when I pipe mail to this perl script from
procmail:

bash$ cat .procmailrc
LOGFILE=/home/user/maillog
:0 HB : user.procmail.lock
* ^To:.*user at localhost.localdomain
| /home/user/bin/mbox-parser.pl
bash$

	then, the script doesn't work due to the following error msg:

gpg: Warning: using insecure memory!
gpg: cannot open /dev/tty: No such device or address

	which looks to me that the gpg passphrase output is being sent to 
a terminal, but can't be found any and it fails. I'll enclose here the 
subroutine I'm using on the decryption, just in case somebody wants to 
know what I'm doing...

begin-------------------------------------------
sub decrypting
{

  my $attachment  = $_[0];

  my $gnupg = GnuPG::Interface->new();

  $gnupg->options->hash_init( armor    => 1,
                              recipients => [ 'tj-cl-testing at alphyra.ie' ]
                            );

  my ( $input, $output, $error, $passphrase_fh, $status_fh )
    = ( IO::Handle->new(),
        IO::Handle->new(),
        IO::Handle->new(),
        IO::Handle->new(),
        IO::Handle->new(),
      );

  my $handles = GnuPG::Handles->new( stdin      => $input,
                                     stdout     => $output,
                                     stderr     => $error,
                                     passphrase => $passphrase_fh,
                                     status     => $status_fh,
                                   );

  my $cipher_file = IO::File->new( "$attachment" );
  my $pid = $gnupg->decrypt( handles => $handles );

  print $passphrase_fh $passphrase;
  close $passphrase_fh;
  print $input $_ while <$cipher_file>;
  close $input;
  close $cipher_file;

  my @plaintext    = <$output>;   # reading the output
  my @error_output = <$error>;    # reading the error
  my @status_info  = <$status_fh>; # read the status info

  open(LOGFILE,">>$DECRLOG");
  my $date = `date`;
  chomp($date);
  print LOGFILE "\n$date -- $attachment decryption 
logging...\n=============================\n";
  print LOGFILE @error_output;
  print LOGFILE @status_info;
  close(LOGFILE);

open (SAVE,">$ATTACHLOC/$ATTACHMENT.decrypted");
print SAVE @plaintext;
close(SAVE);
  # clean up...
  close $output;
  close $error;
  close $status_fh;

  waitpid $pid, 0;  # clean up the finished GnuPG process

}
end------------------------------------------------------


	Anybody came across something like this?

Thanks a million,
Asier
	


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