MAC vendor lookup

Every connected device around the world comes with a unique Media Access Control address, or a MAC address. A common task a network administrator may come across is being able to identify a network device's manufacturer when given only a MAC address.

Basic Task

The task is to interface with one (or numerous) APIs that exist on the internet and retrieve the device manufacturer based on a supplied MAC address.

A MAC address that does not return a valid result should return the String "N/A". A error related to the network connectivity or the API should return a null result.

C#

Java

<lang java>package com.jamesdonnell.MACVendor;

import java.io.BufferedReader; import java.io.FileNotFoundException; import java.io.IOException; import java.io.InputStreamReader; import java.net.HttpURLConnection; import java.net.URL;

/** MAC Vendor Lookup class.

* www.JamesDonnell.com
* @author James A. Donnell Jr. */

public class Lookup { /** Base URL for API. The API from www.macvendors.com was chosen. */ private static final String baseURL = "http://api.macvendors.com/";

/** Performs lookup on MAC address(es) supplied in arguments. * @param args MAC address(es) to lookup. */ public static void main(String[] args) { for (String arguments : args) System.out.println(arguments + ": " + get(arguments)); }

/** Performs lookup on supplied MAC address. * @param macAddress MAC address to lookup. * @return Manufacturer of MAC address. */ private static String get(String macAddress) { try { StringBuilder result = new StringBuilder(); URL url = new URL(baseURL + macAddress); HttpURLConnection conn = (HttpURLConnection) url.openConnection(); conn.setRequestMethod("GET"); BufferedReader rd = new BufferedReader(new InputStreamReader(conn.getInputStream())); String line; while ((line = rd.readLine()) != null) { result.append(line); } rd.close(); return result.toString(); } catch (FileNotFoundException e) { // MAC not found return "N/A"; } catch (IOException e) { // Error during lookup, either network or API. return null; } } }</lang>

Lua

<lang lua>-- Requires LuaSocket extension by Lua -- Created by James A. Donnell Jr. -- www.JamesDonnell.com

local baseURL = "http://api.macvendors.com/"

local function lookup(macAddress) http = require "socket.http" result, statuscode, content = http.request(baseURL .. macAddress) return result end

local macAddress = "FC-A1-3E-2A-1C-33" print(lookup(macAddress))</lang>

Perl 6

Works with: Rakudo version 2016.12

<lang perl6>use HTTP::UserAgent;

my $ua = HTTP::UserAgent.new;

$ua.timeout = 10; # seconds

my $server = 'http://api.macvendors.com/';

sub lookup ($mac) {

   my $response = $ua.get: "$server+$mac";

   return $response.is-success ?? $response.content !! 'N/A';

   CATCH {             # Normally you would report some information about what
       default { Nil } # went wrong, but the task specifies to ignore errors.
   }

}

for < BC:5F:F4 FC-A1-3E 10:dd:b1 00,0d,4b 23:45:67 > -> $mac { say lookup $mac }</lang>

Output:

ASRock Incorporation
Samsung Electronics Co.,Ltd
Apple, Inc.
Roku, Inc.
N/A

zkl

Translation of: Lua

Uses libcurl (the multiprotocol file transfer library) to do the web query <lang zkl>var [const] CURL=Import("zklCurl"); // libcurl const MAC_VENDORS="http://api.macvendors.com/";

fcn lookUp(macAddress){

  httpAddr:=MAC_VENDORS + macAddress;
  vender:=CURL().get(httpAddr); //-->(Data,bytes of header,bytes of trailer)
  vender=vender[0].del(0,vender[1]);  // remove HTTP header
  vender.text;		// Data --> String (Data is a byte bucket)

}</lang> <lang zkl>lookUp("FC-A1-3E-2A-1C-33").println(); lookUp("4c:72:b9:56:fe:bc").println(); lookUp("foobar").println();</lang>

Output:

Samsung Electronics Co.,Ltd
PEGATRON CORPORATION
Vendor not found