#!/usr/bin/perl

use strict;

use Term::ANSIColor;

if ($ARGV[0] !~ /[a-z0-9\.]+/) {
 print "Need... Arg...\n";
 exit 1;
}

my $dns=$ARGV[0];
my $regex;
my $dedjex;
my $pingcmd;


if ($^O == "linux") {
 $regex=qr/(?<bytes>[0-9]+ bytes) from (?<rhost>[a-z\.-]+) \((?<rip>[0-9\.]+)\).*seq=(?<rseq>[0-9]+).*time=(?<rms>[0-9\.]+) ms/;
 $dedjex=qr/no answer yet for icmp_seq=(?<rseq>[0-9]+)/;
 $pingcmd="ping -O";
} elsif ($^O == "MSWin32") {
 # untested lol
 $regex=qr/Reply from (?<rip>[0-9\.]+).*bytes time=(?<rms>[0-9\.]+)ms.*/;
 $dedjex=qr/Request timed out|Destination host unreachable/;
 $pingcmd="ping -t";
} else {
 print "IDK WHAT OS YOU ARE :(";
 exit 1;
}

open(my $PING, "$pingcmd  $dns|") or die "Cannot execute $!";

while (my $line = <$PING>) {
 if ($line =~ $regex) {
  if    ($+{rms} > 100) {print color("bright_red");}
  elsif ($+{rms} > 50)  {print color("bright_yellow");}
  printf "% 3s - % 4s ms - %s (%s)\n", $+{rseq}, $+{rms}, $+{rhost}, $+{rip};
  if ($+{rms} > 50) {print color("reset");}
 } elsif ($line =~ $dedjex) {
  print color("bright_red");
  printf "% 3s - no reply %s\n", $+{rseq}, $dns;
  print color("reset");
 } else {
  print $line;
 }
}

close($PING);