| 3,7 → 3,7 |
|---|
| /* |
| * MAC (EUI-48 and EUI-64) utils for PHP |
| * Copyright 2017 - 2023 Daniel Marschall, ViaThinkSoft |
| * Version 2023-07-11 |
| * Version 2023-07-13 |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| 25,7 → 25,37 |
|---|
| |
| const IEEE_MAC_REGISTRY = __DIR__ . '/../web-data'; |
| |
| if (!function_exists('_random_int')) { |
| function _random_int($min, $max) { |
| // This function tries a CSRNG and falls back to a RNG if no CSRNG is available |
| try { |
| return random_int($min, $max); |
| } catch (Exception $e) { |
| return mt_rand($min, $max); |
| } |
| } |
| } |
| |
| /** |
| * Generates a random new AAI. |
| * @param int $bits Must be 48 or 64 |
| * @param bool $multicast Should it be multicast? |
| */ |
| function gen_aai(int $bits, bool $multicast): string { |
| if (($bits != 48) && ($bits != 64)) throw new Exception("Invalid bits for gen_aai(). Must be 48 or 64."); |
| $bytes = []; |
| for ($i=0; $i<($bits==48?6:8); $i++) { |
| $val = _random_int(0x00, 0xFF); |
| if ($i == 0) { |
| // Make it an AAI |
| $val = $val & 0xF0 | ($multicast ? 0x03 : 0x02); |
| } |
| $bytes[] = sprintf('%02x',$val); |
| } |
| return strtoupper(implode('-',$bytes)); |
| } |
| |
| /** |
| * Checks if a MAC, EUI, ELI, AAI, SAI, or IPv6-Link-Local address is valid |
| * @param string $mac MAC, EUI, or IPv6-Link-Local Address |
| * @return bool True if it is valid |