#!/usr/bin/perl -w

# telnet_redboot.pl - ./upslug --reset;arping -f 192.168.0.1;telnet 192.168.0.1 9000

use Net::Telnet ();

my $host = $ARGV[0] or die "Syntax: $0 <host>\n";

system("while true; do fping -t200 $host && break; done");

my $t = new Net::Telnet (Port => 9000, Timeout => 30);
if(!defined($t)){
    print "new Net::Telnet failed\n";
    exit(1);
} # if
my $ok;
$ok = $t->errmode("return");
$ok = $t->open($host);
if(!defined($ok)){
    print "open('$host') failed\n";
    $t->close();
    exit(1);
} # if

# == Executing boot script in 1.930 seconds - enter ^C to abort

my $line;
while($line = $t->getline()){
       $line =~ s/[\r\n]//;
       print "-> $line\n";
       if($line =~ m/enter \^C to abort/){
               $t->put(chr(3)); # send ^C
               print "<- \^C\n";
               $t->close();
               sleep(1);
               system("telnet $host 9000");
               exit(0);
       } # if
} # while
$t->close();