perl expect ssh

sub interactiveSsh
{
        my ($pConfig,$pass)=@_;
        my $exp = new Expect;
        $exp->slave->clone_winsize_from(\*STDIN);
        $exp->spawn("ssh root\@".$pConfig->{'host'});

        my $spawn_ok;

        $exp->expect(40,
                        [
                                qr'(yes/no)',
                                sub {
                                        my $fh = shift;
                                        $fh->send("yes\n");
                                        exp_continue;
                                }
                        ],
                        [
                                qr'assword:',
                                sub {
                                        if ($spawn_ok) {
                                                $exp->interact();
                                        }
                                        my $fh = shift;
                                        $fh->send("$pass\n");
                                        $spawn_ok=1;
                                        exp_continue;
                                }
                        ],
                        [
                                qr'#',
                                sub {
                                        my $fh = shift;
                                        $fh->send("bash\n");
                                        $exp->send("stty -echo\n");
                                        $exp->interact();
                                        exp_continue;
                                }
                        ],
                        [
                                eof =>
                                sub {
                                        if ($spawn_ok) {
                                                print BOLD GREEN, "SSH close connexion to ".$pConfig->{'host'}.".\n", RESET;
                                                exit 0;
                                        } else {
                                                die "ERROR: could not spawn ssh.\n";
                                        }
                                }
                        ],
                        [
                                timeout =>
                                sub {
                                        die "No login.\n";
                                }
                        ],
                        '-re', qr'[#>:] $',
                );
                $exp->interact();
}