elementor / core / frontend / render-mode-manager.php

render-mode-manager.php in Elementor Website Builder – more than just a page builder 3.29.0-dev4, at core/frontend/render-mode-manager.php

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1	<?php
2	namespace Elementor\Core\Frontend;
3
4	use Elementor\Core\Frontend\RenderModes\Render_Mode_Base;
5	use Elementor\Core\Frontend\RenderModes\Render_Mode_Normal;
6	use Elementor\Modules\CloudLibrary\Render_Mode_Preview;
7
8	if ( ! defined( 'ABSPATH' ) ) {
9	exit; // Exit if accessed directly.
10	}
11
12	class Render_Mode_Manager {
13	const QUERY_STRING_PARAM_NAME = 'render_mode';
14	const QUERY_STRING_POST_ID = 'post_id';
15
16	const QUERY_STRING_TEMPLATE_ID = 'template_id';
17	const QUERY_STRING_NONCE_PARAM_NAME = 'render_mode_nonce';
18	const NONCE_ACTION_PATTERN = 'render_mode_{post_id}';
19
20	/**
21	* @var Render_Mode_Base
22	*/
23	private $current;
24
25	/**
26	* @var Render_Mode_Base[]
27	*/
28	private $render_modes = [];
29
30	/**
31	* @param $post_id
32	* @param $render_mode_name
33	*
34	* @return string
35	*/
36	public static function get_base_url( $post_id, $render_mode_name ) {
37	return add_query_arg( [
38	self::QUERY_STRING_POST_ID => $post_id,
39	self::QUERY_STRING_PARAM_NAME => $render_mode_name,
40	self::QUERY_STRING_NONCE_PARAM_NAME => wp_create_nonce( self::get_nonce_action( $post_id ) ),
41	'ver' => time(),
42	], get_permalink( $post_id ) );
43	}
44
45	/**
46	* @param $post_id
47	*
48	* @return string
49	*/
50	public static function get_nonce_action( $post_id ) {
51	return str_replace( '{post_id}', $post_id, self::NONCE_ACTION_PATTERN );
52	}
53
54	/**
55	* Register a new render mode into the render mode manager.
56	*
57	* @param $class_name
58	*
59	* @return $this
60	* @throws \Exception If the class does not extend Render_Mode_Base.
61	*/
62	public function register_render_mode( $class_name ) {
63	if ( ! is_subclass_of( $class_name, Render_Mode_Base::class ) ) {
64	throw new \Exception( sprintf( "'%s' must extend 'Render_Mode_Base'.", esc_html( $class_name ) ) );
65	}
66
67	$this->render_modes[ $class_name::get_name() ] = $class_name;
68
69	return $this;
70	}
71
72	/**
73	* Get the current render mode.
74	*
75	* @return Render_Mode_Base
76	*/
77	public function get_current() {
78	return $this->current;
79	}
80
81	/**
82	* @param Render_Mode_Base $render_mode
83	*
84	* @return $this
85	*/
86	private function set_current( Render_Mode_Base $render_mode ) {
87	$this->current = $render_mode;
88
89	return $this;
90	}
91
92	/**
93	* Set render mode.
94	*
95	* @return $this
96	*/
97	private function choose_render_mode() {
98	$post_id = null;
99	$template_id = null;
100	$key = null;
101	$nonce = null;
102
103	if ( isset( $_GET[ self::QUERY_STRING_POST_ID ] ) ) {
104	$post_id = $_GET[ self::QUERY_STRING_POST_ID ]; // phpcs:ignore -- Nonce will be checked next line.
105	}
106
107	if ( isset( $_GET[ self::QUERY_STRING_NONCE_PARAM_NAME ] ) ) {
108	$nonce = $_GET[ self::QUERY_STRING_NONCE_PARAM_NAME ]; // phpcs:ignore -- Nonce will be checked next line.
109	}
110
111	if ( isset( $_GET[ self::QUERY_STRING_PARAM_NAME ] ) ) {
112	$key = $_GET[ self::QUERY_STRING_PARAM_NAME ]; // phpcs:ignore -- Nonce will be checked next line.
113	}
114
115	if ( isset( $_GET[ self::QUERY_STRING_TEMPLATE_ID ] ) ) {
116	$template_id = $_GET[ self::QUERY_STRING_TEMPLATE_ID ]; // phpcs:ignore -- Nonce will be checked next line.
117	}
118
119	if (
120	$post_id &&
121	$nonce &&
122	wp_verify_nonce( $nonce, self::get_nonce_action( $post_id ) ) &&
123	$key &&
124	array_key_exists( $key, $this->render_modes )
125	) {
126	$this->set_current( new $this->render_modes[ $key ]( $post_id ) );
127	} else if ( $this->is_preview_mode( $template_id, $key, $nonce ) ) {
128	$this->set_current( new $this->render_modes[ $key ]( $template_id ) );
129	} else {
130	$this->set_current( new Render_Mode_Normal( $post_id ) );
131	}
132
133	return $this;
134	}
135
136	private function is_preview_mode( $template_id, $render_mode, $nonce ) {
137	if ( empty( $template_id ) ) {
138	return false;
139	}
140
141	if ( Render_Mode_Preview::MODE !== $render_mode ) {
142	return false;
143	}
144
145	if ( ! array_key_exists( $render_mode, $this->render_modes ) ) {
146	return false;
147	}
148
149	if ( ! wp_verify_nonce( $nonce, self::get_nonce_action( $template_id ) ) ) {
150	wp_die( esc_html__( 'Not Authorized', 'elementor' ), esc_html__( 'Error', 'elementor' ), 403 );
151	}
152
153	return true;
154	}
155
156	/**
157	* Add actions base on the current render.
158	*
159	* @throws \Requests_Exception_HTTP_403 If the current render mode does not have the required permissions.
160	* @throws Status403 If the current render mode does not have the required permissions.
161	*/
162	private function add_current_actions() {
163	if ( ! $this->current->get_permissions_callback() ) {
164	// WP >= 6.2-alpha
165	if ( class_exists( '\WpOrg\Requests\Exception\Http\Status403' ) ) {
166	throw new \WpOrg\Requests\Exception\Http\Status403();
167	} else {
168	throw new \Requests_Exception_HTTP_403();
169	}
170	}
171
172	// Run when 'template-redirect' actually because the the class is instantiate when 'template-redirect' run.
173	$this->current->prepare_render();
174	}
175
176	/**
177	* Render_Mode_Manager constructor.
178	*
179	* @throws \Exception If the render mode registration fails.
180	*/
181	public function __construct() {
182	$this->register_render_mode( Render_Mode_Normal::class );
183
184	do_action( 'elementor/frontend/render_mode/register', $this );
185
186	$this->choose_render_mode();
187	$this->add_current_actions();
188	}
189	}
190