two-factor-authentication / simba-tfa / includes / tfa-encryption-muplugin.php

tfa-encryption-muplugin.php in Two Factor Authentication 1.14.24, at simba-tfa/includes/tfa-encryption-muplugin.php

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1	<?php
2
3	if (!defined('ABSPATH')) die('Access denied.');
4
5	class Simba_TFA_Encryption_Muplugin {
6
7	/**
8	* The simba tfa object
9	*
10	* @var object
11	*/
12	private $simba_tfa;
13
14	/**
15	* Full path to the file we're managing
16	*
17	* @var string
18	*/
19	private $file_path;
20
21	/**
22	* The class constructor
23	*
24	* @param object $simba_tfa - the simba tfa object
25	*/
26	public function __construct($simba_tfa) {
27	$this->simba_tfa = $simba_tfa;
28	$this->file_path = path_join($this->get_mu_plugin_dir(), 'simba-tfa-encryption-key.php');
29	}
30
31	/**
32	* Returns full path to mu-plugin directory
33	*
34	* @return string - the mu-plugin directory path
35	*/
36	public function get_mu_plugin_dir() {
37	return WPMU_PLUGIN_DIR;
38	}
39
40	/**
41	* Returns the full path to the mu-plugin file
42	*
43	* @return string - the mu-plugin path
44	*/
45	public function get_file_path() {
46	return $this->file_path;
47	}
48
49	/**
50	* This function checks if our mu-plugin exists
51	*
52	* @return boolean - true if the file exists otherwise false
53	*/
54	public function muplugin_exists() {
55	return file_exists($this->file_path);
56	}
57
58	/**
59	* Inserts our code into our mu-plugin.
60	*
61	* The mu-plugin and the mu-plugin directory will be created if they don't already exists
62	*
63	* @return boolean\|WP_Error - true on success or WP_Error on failure
64	*/
65	public function insert_contents() {
66
67	$info = pathinfo($this->file_path);
68
69	if (!isset($info['dirname'])) {
70	return new WP_Error(
71	'file_no_directory',
72	__('Encrypt secrets feature not enabled: no directory has been set.', 'two-factor-authentication') . ' ' . sprintf(__('Please check your %s constant is valid', 'two-factor-authentication'), 'WPMU_PLUGIN_DIR'),
73	$this->file_path
74	);
75	}
76
77	if (false === wp_mkdir_p($info['dirname'])) {
78	return new WP_Error(
79	'file_no_directory_created',
80	sprintf(__('The encrypt secrets feature was not enabled: your mu-plugins directory could not be automatically created; therefore, please use your web hosting file manager or FTP to manually create this folder and then try again: %s', 'two-factor-authentication'), $this->get_mu_plugin_dir()),
81	$info['dirname']
82	);
83	}
84
85	if (false === @file_put_contents($this->file_path, $this->get_contents())) { // phpcs:ignore Generic.PHP.NoSilencedErrors.Discouraged -- ignore this as it is handled by the caller
86	return new WP_Error(
87	'file_no_contents',
88	__('The encrypt secrets feature was not enabled: attempting to write the mu-plugin file contents failed; therefore, please create the file manually.', 'two-factor-authentication') . "<br><br>" . sprintf(__('Add the following code to the file %s'), $this->get_file_path()) . "\n" . '<br><br><code>' . nl2br(esc_html($this->get_contents())) . '</code><br><br>' . __('Once you have added the above code then press the button to turn on encryption again', 'two-factor-authentication'),
89	$info['dirname']
90	);
91	}
92
93	return true;
94	}
95
96	/**
97	* This function creates the contents for the mu-plugin
98	*
99	* @return string - the contents of the mu-plugin
100	*/
101	public function get_contents() {
102	$encryption_key = base64_encode($this->simba_tfa->random_bytes(16));
103	$code = "<?php\n";
104	$code .= "// Simba TFA Database encryption key. Do not change this unless you wish all your existing encrypted keys to become unusable (e.g. if you intend to then replace them all).\n";
105	$code .= "if (!defined('SIMBA_TFA_DB_ENCRYPTION_KEY')) define('SIMBA_TFA_DB_ENCRYPTION_KEY', '{$encryption_key}');";
106
107	return $code;
108	}
109	}
110
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