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