core-rollback / src / Settings.php

Settings.php in Core Rollback trunk, at src/Settings.php

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1	<?php
2	/**
3	* Core Rollback
4	*
5	* @author Andy Fragen
6	* @license MIT
7	* @link https://github.com/afragen/core-rollback
8	* @package core-rollback
9	*/
10
11	namespace Fragen\Rollback;
12
13	/*
14	* Exit if called directly.
15	*/
16	if ( ! defined( 'WPINC' ) ) {
17	die;
18	}
19
20	/**
21	* Class Settings
22	*/
23	class Settings {
24	/**
25	* Load hooks.
26	*
27	* @return void
28	*/
29	public function load_hooks() {
30	add_action( 'admin_init', [ $this, 'add_settings' ] );
31	add_action( is_multisite() ? 'network_admin_menu' : 'admin_menu', [ $this, 'add_plugin_menu' ] );
32	add_action( 'admin_init', [ $this, 'update_settings' ] );
33	add_action( 'network_admin_edit_rollback', [ $this, 'update_settings' ] );
34	}
35
36	/**
37	* Add/register setttings.
38	*
39	* @return void
40	*/
41	public function add_settings() {
42	register_setting( 'rollback_settings', 'rollback_settings' );
43	add_settings_section(
44	'core_rollback',
45	null,
46	[ $this, 'print_core_rollback' ],
47	'rollback'
48	);
49	add_settings_field(
50	'core_versions',
51	__( 'Core Releases', 'core-rollback' ),
52	[ $this, 'version_dropdown' ],
53	'rollback',
54	'core_rollback',
55	[ 'core' => new Core() ]
56	);
57	}
58
59	/**
60	* Print settings section blurb.
61	*
62	* @return void
63	*/
64	public function print_core_rollback() {
65	global $wp_version;
66
67	echo '<div class="notice notice-warning fade">';
68	echo '<p>' . wp_kses_post( __( '<strong>WARNING:</strong> Downgrading WordPress Core may leave your site in an unusable state.', 'core-rollback' ) ) . '</p>';
69	echo '</div>';
70	echo '<div class="notice notice-info fade">';
71	echo '<p>' . wp_kses_post( __( '<strong>INFO:</strong> Depending upon your current PHP version, some versions of WordPress core will not be available for rollback.', 'core-rollback' ) ) . '</p>';
72	echo '</div>';
73
74	esc_html_e( 'Rollback to latest release or any outdated, secure release version of WordPress Core.', 'core-rollback' );
75
76	if ( function_exists( 'wp_is_block_theme' ) && wp_is_block_theme() ) {
77	echo '<div class="notice notice-info fade is-dismissible">';
78	echo '<p>' . wp_kses_post( __( '<strong>INFO:</strong> Your site is currently using a block theme. Block themes require at least WordPress 5.9.', 'core-rollback' ) ) . '</p>';
79	echo '</div>';
80	}
81
82	echo '<ol>';
83	echo( '<li>' . esc_html__( 'Select the rollback version from the dropdown menu.', 'core-rollback' ) . '</li>' );
84	echo( '<li>' . esc_html__( 'Click the `Rollback` button. You will be automatically re-directed to the `update-core.php` page.', 'core-rollback' ) . '</li>' );
85	echo( '<li>' . esc_html__( 'Use the `Re-install` button to rollback to the selected version.', 'core-rollback' ) . '</li>' );
86	echo '</ol>';
87	}
88
89	/**
90	* Add options page.
91	*/
92	public function add_plugin_menu() {
93	$parent = is_multisite() ? 'settings.php' : 'tools.php';
94	$capability = is_multisite() ? 'manage_network_options' : 'manage_options';
95
96	add_submenu_page(
97	$parent,
98	esc_html__( 'Rollback Core', 'core-rollback' ),
99	esc_html_x( 'Rollback Core', 'Menu item', 'core-rollback' ),
100	$capability,
101	'rollback',
102	[ $this, 'create_admin_page' ]
103	);
104	}
105
106	/**
107	* Options page callback.
108	*/
109	public function create_admin_page() {
110	$action = is_multisite() ? 'edit.php?action=rollback' : 'options.php';
111	$form_action = 'update-core.php?action=do-core-reinstall';
112	$submit = __( 'Rollback', 'core-rollback' );
113	$disabled = ! empty( $this->filter_if_block_themes() ) ? '' : 'disabled';
114
115	echo '<div class="wrap">';
116	echo '<h2>' . esc_html__( 'Rollback Core', 'core-rollback' ) . '</h2>';
117	echo '<form method="post" action="' . esc_attr( $form_action ) . '" name="upgrade" class="upgrade">';
118	settings_fields( 'rollback_settings' );
119	do_settings_sections( 'rollback' );
120	submit_button( $submit, $disabled );
121	echo '</form>';
122	echo '</div>';
123	}
124
125	/**
126	* Make version dropdown.
127	*
128	* @param array $args Array of args, [ 'core' => new Core() ].
129	*
130	* @return void
131	*/
132	public function version_dropdown( $args ) {
133	$items = array_keys( $args['core']::$core_versions );
134
135	// Filter out WP versions with deprecations and current PHP version.
136	$items = array_filter(
137	$items,
138	function ( $item ) {
139	if ( function_exists( 'wp_is_block_theme' ) && wp_is_block_theme() ) {
140	return version_compare( $item, '5.9', '>=' );
141	}
142	if ( version_compare( phpversion(), '8.0', '<' ) ) {
143	return version_compare( $item, '4.0', '>=' );
144	} else {
145	return version_compare( $item, '5.3', '>=' );
146	}
147	}
148	);
149
150	if ( ! empty( $this->filter_if_block_themes() ) ) {
151	echo "<select id='core_dropdown' name='versions[core_dropdown]'>";
152	foreach ( $items as $item ) {
153	echo '<option value="' . esc_attr( $item ) . '">' . esc_attr( $item ) . '</option>';
154	}
155	echo '</select>';
156	}
157	}
158
159	/**
160	* Return array of core versions compatible with block themes.
161	*
162	* @return array
163	*/
164	private function filter_if_block_themes() {
165	$core = new Core();
166	$items = array_keys( $core::$core_versions );
167	if ( function_exists( 'wp_is_block_theme' ) && wp_is_block_theme() ) {
168	$items = array_filter(
169	$items,
170	function ( $item ) {
171	return version_compare( $item, '5.9', '>=' );
172	}
173	);
174	}
175	return $items;
176	}
177
178	/**
179	* Update single site and network settings.
180	* Used when plugin is network activated to save settings.
181	*
182	* @link http://wordpress.stackexchange.com/questions/64968/settings-api-in-multisite-missing-update-message
183	* @link http://benohead.com/wordpress-network-wide-plugin-settings/
184	*/
185	public function update_settings() {
186	// Exit if improper privileges.
187	if ( ! isset( $_POST['_wpnonce'] ) \|\| ! wp_verify_nonce( sanitize_key( wp_unslash( $_POST['_wpnonce'] ) ), 'rollback_settings-options' ) ) {
188	return;
189	}
190
191	if ( ! isset( $_POST['_wp_http_referer'] ) ) {
192	return false;
193	}
194
195	if ( isset( $_POST['option_page'] ) &&
196	'rollback_settings' === sanitize_title_with_dashes( wp_unslash( $_POST['option_page'] ) )
197	) {
198	// phpcs:ignore WordPress.Security.ValidatedSanitizedInput.InputNotSanitized
199	$options = isset( $_POST['versions'] ) ? wp_unslash( $_POST['versions'] ) : [];
200	// phpcs:enable
201
202	set_site_transient( '_core_rollback', $options, 15 );
203	wp_safe_redirect( \network_admin_url( 'update-core.php?force-check=1' ) );
204	exit;
205	}
206	}
207	}
208