#!/usr/bin/perl -w

use Getopt::Long;

$port = 5951;
$password = "";

&GetOptions("port=i"=>\$port, "password=s"=>\$password);

if (!on_path("v3_x0vncserver")) { 
  print "You do not have v3_x0vncserver available on your PATH.\n";
  print "v3_vncserver requires this functionality.\n";
  print "You probably need to add .../palacios/linux_usr to your path\n";
  print "Or you need to build v3_x0vncserver.\n";
  exit -1;
}

$#ARGV==0 or die "usage: v3_vncserver [--port=port] [--password=password] /dev/v3-vmN\n";


$vm=shift;



system "echo \"$password\" | vncpasswd -f > ./.vncpasswd";

system "v3_x0vncserver --PasswordFile=./.vncpasswd -rfbport $port $vm >/dev/null 2>&1 & echo \$! > ./.vncpid";
 
print STDERR "pid of server is stored in ./.vncpid\n";
print "You can now connect to port $port with password \"$password\"\n";

sub on_path {
  my $x = `which $_[0] 2>&1`;
  if (!defined($x) || $x=~/no $_[0] in/) {
    return 0;
  } else {
    return 1;
  }
}