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

render-mode-manager.php in Elementor Website Builder – more than just a page builder 4.1.5, 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
18	const QUERY_STRING_NONCE_PARAM_NAME = 'render_mode_nonce';
19	const NONCE_ACTION_PATTERN = 'render_mode_{post_id}';
20
21	/**
22	* @var Render_Mode_Base
23	*/
24	private $current;
25
26	/**
27	* @var Render_Mode_Base[]
28	*/
29	private $render_modes = [];
30
31	/**
32	* @param $post_id
33	* @param $render_mode_name
34	*
35	* @return string
36	*/
37	public static function get_base_url( $post_id, $render_mode_name ) {
38	return add_query_arg( [
39	self::QUERY_STRING_POST_ID => $post_id,
40	self::QUERY_STRING_PARAM_NAME => $render_mode_name,
41	self::QUERY_STRING_NONCE_PARAM_NAME => wp_create_nonce( self::get_nonce_action( $post_id ) ),
42	'ver' => time(),
43	], get_permalink( $post_id ) );
44	}
45
46	/**
47	* @param $post_id
48	*
49	* @return string
50	*/
51	public static function get_nonce_action( $post_id ) {
52	return str_replace( '{post_id}', $post_id, self::NONCE_ACTION_PATTERN );
53	}
54
55	/**
56	* Register a new render mode into the render mode manager.
57	*
58	* @param $class_name
59	*
60	* @return $this
61	* @throws \Exception If the class does not extend Render_Mode_Base.
62	*/
63	public function register_render_mode( $class_name ) {
64	if ( ! is_subclass_of( $class_name, Render_Mode_Base::class ) ) {
65	throw new \Exception( sprintf( "'%s' must extend 'Render_Mode_Base'.", esc_html( $class_name ) ) );
66	}
67
68	$this->render_modes[ $class_name::get_name() ] = $class_name;
69
70	return $this;
71	}
72
73	/**
74	* Get the current render mode.
75	*
76	* @return Render_Mode_Base
77	*/
78	public function get_current() {
79	return $this->current;
80	}
81
82	/**
83	* @param Render_Mode_Base $render_mode
84	*
85	* @return $this
86	*/
87	private function set_current( Render_Mode_Base $render_mode ) {
88	$this->current = $render_mode;
89
90	return $this;
91	}
92
93	/**
94	* Set render mode.
95	*
96	* @return $this
97	*/
98	private function choose_render_mode() {
99	$post_id = null;
100	$template_id = null;
101	$key = null;
102	$nonce = null;
103	$kit_preview = null;
104
105	if ( isset( $_GET[ self::QUERY_STRING_POST_ID ] ) ) {
106	$post_id = $_GET[ self::QUERY_STRING_POST_ID ]; // phpcs:ignore -- Nonce will be checked next line.
107	}
108
109	if ( isset( $_GET[ self::QUERY_STRING_NONCE_PARAM_NAME ] ) ) {
110	$nonce = $_GET[ self::QUERY_STRING_NONCE_PARAM_NAME ]; // phpcs:ignore -- Nonce will be checked next line.
111	}
112
113	if ( isset( $_GET[ self::QUERY_STRING_PARAM_NAME ] ) ) {
114	$key = $_GET[ self::QUERY_STRING_PARAM_NAME ]; // phpcs:ignore -- Nonce will be checked next line.
115	}
116
117	if ( isset( $_GET[ self::QUERY_STRING_TEMPLATE_ID ] ) ) {
118	$template_id = $_GET[ self::QUERY_STRING_TEMPLATE_ID ]; // phpcs:ignore -- Nonce will be checked next line.
119	}
120
121	if (
122	$post_id &&
123	$nonce &&
124	wp_verify_nonce( $nonce, self::get_nonce_action( $post_id ) ) &&
125	$key &&
126	array_key_exists( $key, $this->render_modes )
127	) {
128	$this->set_current( new $this->render_modes[ $key ]( $post_id ) );
129	} elseif ( $this->is_template_preview_mode( $template_id, $key, $nonce ) ) {
130	$this->set_current( new $this->render_modes[ $key ]( $template_id ) );
131	} else {
132	$this->set_current( new Render_Mode_Normal( $post_id ) );
133	}
134
135	return $this;
136	}
137
138	private function is_template_preview_mode( $template_id, $render_mode, $nonce ) {
139	if ( empty( $template_id ) ) {
140	return false;
141	}
142
143	if ( Render_Mode_Preview::MODE !== $render_mode ) {
144	return false;
145	}
146
147	if ( ! array_key_exists( $render_mode, $this->render_modes ) ) {
148	return false;
149	}
150
151	if ( ! wp_verify_nonce( $nonce, self::get_nonce_action( $template_id ) ) ) {
152	wp_die( esc_html__( 'Not Authorized', 'elementor' ), esc_html__( 'Error', 'elementor' ), 403 );
153	}
154
155	return true;
156	}
157
158	/**
159	* Add actions base on the current render.
160	*
161	* @throws \Requests_Exception_HTTP_403 If the current render mode does not have the required permissions.
162	* @throws \WpOrg\Requests\Exception\Http\Status403 If the current render mode does not have the required permissions.
163	*/
164	private function add_current_actions() {
165	if ( ! $this->current->get_permissions_callback() ) {
166	// WP >= 6.2-alpha
167	if ( class_exists( '\WpOrg\Requests\Exception\Http\Status403' ) ) {
168	throw new \WpOrg\Requests\Exception\Http\Status403();
169	} else {
170	throw new \Requests_Exception_HTTP_403();
171	}
172	}
173
174	// Run when 'template-redirect' actually because the the class is instantiate when 'template-redirect' run.
175	$this->current->prepare_render();
176	}
177
178	/**
179	* Render_Mode_Manager constructor.
180	*
181	* @throws \Exception If the render mode registration fails.
182	*/
183	public function __construct() {
184	$this->register_render_mode( Render_Mode_Normal::class );
185
186	do_action( 'elementor/frontend/render_mode/register', $this );
187
188	$this->choose_render_mode();
189	$this->add_current_actions();
190	}
191	}
192