SystemNodeProvider.php — ShareThis Dashboard for Google Analytics trunk

googleanalytics / lib / analytics-admin / vendor / ramsey / uuid / src / Provider / Node / SystemNodeProvider.php

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FallbackNodeProvider.php 3 years ago NodeProviderCollection.php 3 years ago RandomNodeProvider.php 3 years ago StaticNodeProvider.php 3 years ago SystemNodeProvider.php 3 years ago

SystemNodeProvider.php

174 lines

1	<?php
2
3	/**
4	* This file is part of the ramsey/uuid library
5	*
6	* For the full copyright and license information, please view the LICENSE
7	* file that was distributed with this source code.
8	*
9	* @copyright Copyright (c) Ben Ramsey <ben@benramsey.com>
10	* @license http://opensource.org/licenses/MIT MIT
11	*/
12
13	declare(strict_types=1);
14
15	namespace Ramsey\Uuid\Provider\Node;
16
17	use Ramsey\Uuid\Exception\NodeException;
18	use Ramsey\Uuid\Provider\NodeProviderInterface;
19	use Ramsey\Uuid\Type\Hexadecimal;
20
21	use function array_filter;
22	use function array_map;
23	use function array_walk;
24	use function count;
25	use function ob_get_clean;
26	use function ob_start;
27	use function preg_match;
28	use function preg_match_all;
29	use function reset;
30	use function str_replace;
31	use function strpos;
32	use function strtolower;
33	use function strtoupper;
34	use function substr;
35
36	use const GLOB_NOSORT;
37	use const PREG_PATTERN_ORDER;
38
39	/**
40	* SystemNodeProvider retrieves the system node ID, if possible
41	*
42	* The system node ID, or host ID, is often the same as the MAC address for a
43	* network interface on the host.
44	*/
45	class SystemNodeProvider implements NodeProviderInterface
46	{
47	/**
48	* Pattern to match nodes in ifconfig and ipconfig output.
49	*/
50	private const IFCONFIG_PATTERN = '/[^:]([0-9a-f]{2}([:-])[0-9a-f]{2}(\2[0-9a-f]{2}){4})[^:]/i';
51
52	/**
53	* Pattern to match nodes in sysfs stream output.
54	*/
55	private const SYSFS_PATTERN = '/^([0-9a-f]{2}:){5}[0-9a-f]{2}$/i';
56
57	public function getNode(): Hexadecimal
58	{
59	$node = $this->getNodeFromSystem();
60
61	if ($node === '') {
62	throw new NodeException(
63	'Unable to fetch a node for this system'
64	);
65	}
66
67	return new Hexadecimal($node);
68	}
69
70	/**
71	* Returns the system node, if it can find it
72	*/
73	protected function getNodeFromSystem(): string
74	{
75	static $node = null;
76
77	if ($node !== null) {
78	return (string) $node;
79	}
80
81	// First, try a Linux-specific approach.
82	$node = $this->getSysfs();
83
84	if ($node === '') {
85	// Search ifconfig output for MAC addresses & return the first one.
86	$node = $this->getIfconfig();
87	}
88
89	$node = str_replace([':', '-'], '', $node);
90
91	return $node;
92	}
93
94	/**
95	* Returns the network interface configuration for the system
96	*
97	* @codeCoverageIgnore
98	*/
99	protected function getIfconfig(): string
100	{
101	$disabledFunctions = strtolower((string) ini_get('disable_functions'));
102
103	if (strpos($disabledFunctions, 'passthru') !== false) {
104	return '';
105	}
106
107	ob_start();
108	switch (strtoupper(substr(constant('PHP_OS'), 0, 3))) {
109	case 'WIN':
110	passthru('ipconfig /all 2>&1');
111
112	break;
113	case 'DAR':
114	passthru('ifconfig 2>&1');
115
116	break;
117	case 'FRE':
118	passthru('netstat -i -f link 2>&1');
119
120	break;
121	case 'LIN':
122	default:
123	passthru('netstat -ie 2>&1');
124
125	break;
126	}
127
128	$ifconfig = (string) ob_get_clean();
129
130	$node = '';
131	if (preg_match_all(self::IFCONFIG_PATTERN, $ifconfig, $matches, PREG_PATTERN_ORDER)) {
132	$node = $matches[1][0] ?? '';
133	}
134
135	return $node;
136	}
137
138	/**
139	* Returns MAC address from the first system interface via the sysfs interface
140	*/
141	protected function getSysfs(): string
142	{
143	$mac = '';
144
145	if (strtoupper(constant('PHP_OS')) === 'LINUX') {
146	$addressPaths = glob('/sys/class/net/*/address', GLOB_NOSORT);
147
148	if ($addressPaths === false \|\| count($addressPaths) === 0) {
149	return '';
150	}
151
152	$macs = [];
153
154	array_walk($addressPaths, function (string $addressPath) use (&$macs): void {
155	if (is_readable($addressPath)) {
156	$macs[] = file_get_contents($addressPath);
157	}
158	});
159
160	$macs = array_map('trim', $macs);
161
162	// Remove invalid entries.
163	$macs = array_filter($macs, function (string $address) {
164	return $address !== '00:00:00:00:00:00'
165	&& preg_match(self::SYSFS_PATTERN, $address);
166	});
167
168	$mac = reset($macs);
169	}
170
171	return (string) $mac;
172	}
173	}
174