#!/usr/bin/env perl

use warnings;
use strict;
my $vid = shift;
my $pid = shift;
my $prefix = '/dev/serial/by-id/';
my @paths= `ls $prefix`;
my %devices;

for my $path (@paths) {
	chomp($path);
	next unless -l $prefix. $path;
	my @data = `udevadm info -q property --name=${prefix}${path}`;
	for my $line (@data) {
	chomp ($line);
	my ($key,$val) = split(/=/,$line,2);
		$devices{$path}{$key} = $val;
	}
	if (($devices{$path}{'ID_VENDOR_ID'} == $vid) &&
	   ($devices{$path}{'ID_MODEL_ID'} == $pid) ) {

	   if ($devices{$path}{'ID_MM_CANDIDATE'}) {
         warn "Yikes. ModemManager wants to pwn your keyboard";
     }

     print $devices{$path}{DEVNAME};
     exit(0);
   }
}