diff options
Diffstat (limited to 'vendor/ramsey/uuid/src/Provider/Node/SystemNodeProvider.php')
-rw-r--r-- | vendor/ramsey/uuid/src/Provider/Node/SystemNodeProvider.php | 173 |
1 files changed, 173 insertions, 0 deletions
diff --git a/vendor/ramsey/uuid/src/Provider/Node/SystemNodeProvider.php b/vendor/ramsey/uuid/src/Provider/Node/SystemNodeProvider.php new file mode 100644 index 0000000..d512f22 --- /dev/null +++ b/vendor/ramsey/uuid/src/Provider/Node/SystemNodeProvider.php @@ -0,0 +1,173 @@ +<?php + +/** + * This file is part of the ramsey/uuid library + * + * For the full copyright and license information, please view the LICENSE + * file that was distributed with this source code. + * + * @copyright Copyright (c) Ben Ramsey <ben@benramsey.com> + * @license http://opensource.org/licenses/MIT MIT + */ + +declare(strict_types=1); + +namespace Ramsey\Uuid\Provider\Node; + +use Ramsey\Uuid\Exception\NodeException; +use Ramsey\Uuid\Provider\NodeProviderInterface; +use Ramsey\Uuid\Type\Hexadecimal; + +use function array_filter; +use function array_map; +use function array_walk; +use function count; +use function ob_get_clean; +use function ob_start; +use function preg_match; +use function preg_match_all; +use function reset; +use function str_replace; +use function strpos; +use function strtolower; +use function strtoupper; +use function substr; + +use const GLOB_NOSORT; +use const PREG_PATTERN_ORDER; + +/** + * SystemNodeProvider retrieves the system node ID, if possible + * + * The system node ID, or host ID, is often the same as the MAC address for a + * network interface on the host. + */ +class SystemNodeProvider implements NodeProviderInterface +{ + /** + * Pattern to match nodes in ifconfig and ipconfig output. + */ + private const IFCONFIG_PATTERN = '/[^:]([0-9a-f]{2}([:-])[0-9a-f]{2}(\2[0-9a-f]{2}){4})[^:]/i'; + + /** + * Pattern to match nodes in sysfs stream output. + */ + private const SYSFS_PATTERN = '/^([0-9a-f]{2}:){5}[0-9a-f]{2}$/i'; + + public function getNode(): Hexadecimal + { + $node = $this->getNodeFromSystem(); + + if ($node === '') { + throw new NodeException( + 'Unable to fetch a node for this system' + ); + } + + return new Hexadecimal($node); + } + + /** + * Returns the system node, if it can find it + */ + protected function getNodeFromSystem(): string + { + static $node = null; + + if ($node !== null) { + return (string) $node; + } + + // First, try a Linux-specific approach. + $node = $this->getSysfs(); + + if ($node === '') { + // Search ifconfig output for MAC addresses & return the first one. + $node = $this->getIfconfig(); + } + + $node = str_replace([':', '-'], '', $node); + + return $node; + } + + /** + * Returns the network interface configuration for the system + * + * @codeCoverageIgnore + */ + protected function getIfconfig(): string + { + $disabledFunctions = strtolower((string) ini_get('disable_functions')); + + if (strpos($disabledFunctions, 'passthru') !== false) { + return ''; + } + + ob_start(); + switch (strtoupper(substr(constant('PHP_OS'), 0, 3))) { + case 'WIN': + passthru('ipconfig /all 2>&1'); + + break; + case 'DAR': + passthru('ifconfig 2>&1'); + + break; + case 'FRE': + passthru('netstat -i -f link 2>&1'); + + break; + case 'LIN': + default: + passthru('netstat -ie 2>&1'); + + break; + } + + $ifconfig = (string) ob_get_clean(); + + $node = ''; + if (preg_match_all(self::IFCONFIG_PATTERN, $ifconfig, $matches, PREG_PATTERN_ORDER)) { + $node = $matches[1][0] ?? ''; + } + + return $node; + } + + /** + * Returns MAC address from the first system interface via the sysfs interface + */ + protected function getSysfs(): string + { + $mac = ''; + + if (strtoupper(constant('PHP_OS')) === 'LINUX') { + $addressPaths = glob('/sys/class/net/*/address', GLOB_NOSORT); + + if ($addressPaths === false || count($addressPaths) === 0) { + return ''; + } + + $macs = []; + + array_walk($addressPaths, function (string $addressPath) use (&$macs): void { + if (is_readable($addressPath)) { + $macs[] = file_get_contents($addressPath); + } + }); + + $macs = array_map('trim', $macs); + + // Remove invalid entries. + $macs = array_filter($macs, function (string $address) { + return $address !== '00:00:00:00:00:00' + && preg_match(self::SYSFS_PATTERN, $address); + }); + + $mac = reset($macs); + } + + return (string) $mac; + } +} |