class-foogallery-license-constant-handler.php — Gallery : FooGallery 3.3.3

foogallery / includes / class-foogallery-license-constant-handler.php

foogallery / includes Last commit date

class-foogallery-license-constant-handler.php

151 lines

1	<?php
2	/**
3	* Handles automatic Freemius license activation from a predefined constant.
4	*
5	* @package FooGallery
6	* @author FooPlugins
7	* @license GPL-2.0+
8	* @link https://github.com/fooplugins/foogallery
9	*/
10
11	if ( ! defined( 'ABSPATH' ) ) {
12	exit;
13	}
14
15	/**
16	* Automatically applies a Freemius license key defined via a constant.
17	*/
18	class FooGallery_License_Constant_Handler {
19
20	const LICENSE_CONSTANT = 'FOOGALLERY_LICENSE_KEY';
21
22	const OPTION_STATE = 'foogallery_license_activation_state';
23
24	/**
25	* Mark that activation just ran so we can attempt license application on the next admin load.
26	*
27	* @return void
28	*/
29	public static function flag_activation() {
30	if ( ! defined( self::LICENSE_CONSTANT ) ) {
31	return;
32	}
33
34	update_option( self::OPTION_STATE, 'pending' );
35	}
36
37	/**
38	* Boot the handler hooks.
39	*
40	* @return void
41	*/
42	public static function init() {
43	if ( ! defined( self::LICENSE_CONSTANT ) ) {
44	return;
45	}
46
47	$handler = new self();
48
49	add_action( 'admin_init', array( $handler, 'license_key_auto_activation' ) );
50	}
51
52	/**
53	* Attempt to apply the configured license key.
54	*
55	* @return void
56	*/
57	public function license_key_auto_activation() {
58	$state = get_option( self::OPTION_STATE, '' );
59
60	if ( 'pending' !== $state && 1 !== $state ) {
61	return;
62	}
63
64	if ( is_network_admin() \|\| ! current_user_can( 'activate_plugins' ) ) {
65	return;
66	}
67
68	if ( ! defined( self::LICENSE_CONSTANT ) ) {
69	return;
70	}
71
72	$license_key = $this->sanitize_license_constant( constant( self::LICENSE_CONSTANT ) );
73
74	if ( '' === $license_key ) {
75	$this->mark_state( 'invalid_constant' );
76
77	return;
78	}
79
80	if ( ! function_exists( 'foogallery_fs' ) ) {
81	return;
82	}
83
84	$fs = foogallery_fs();
85
86	if ( $fs->has_active_valid_license() ) {
87	$this->mark_state( 'done' );
88
89	return;
90	}
91
92	try {
93	$next_page = $fs->activate_migrated_license( $license_key, null, null, array(), null );
94	} catch ( Exception $exception ) {
95	$this->mark_state( 'unexpected_error' );
96
97	return;
98	}
99
100	if ( $fs->can_use_premium_code() ) {
101	$this->mark_state( 'done' );
102	} else {
103	$this->mark_state( 'failed' );
104	}
105	}
106
107	/**
108	* Validate and normalize the license constant value.
109	*
110	* @param mixed $license_constant Raw constant value.
111	*
112	* @return string
113	*/
114	private function sanitize_license_constant( $license_constant ) {
115	if ( ! is_string( $license_constant ) ) {
116	return '';
117	}
118
119	$license_key = trim( $license_constant );
120
121	if ( '' === $license_key ) {
122	return '';
123	}
124
125	if ( 32 !== strlen( $license_key ) ) {
126	return '';
127	}
128
129	if ( 0 !== strncmp( $license_key, 'sk_', 3 ) ) {
130	return '';
131	}
132
133	if ( false !== strpbrk( $license_key, " \t\n\r\0\x0B" ) ) {
134	return '';
135	}
136
137	return $license_key;
138	}
139
140	/**
141	* Update the activation attempt state.
142	*
143	* @param string $state New state value.
144	*
145	* @return void
146	*/
147	private function mark_state( $state ) {
148	update_option( self::OPTION_STATE, $state );
149	}
150	}
151