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515 lines
20 KiB
PHP
515 lines
20 KiB
PHP
<?php
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/**
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* Display Conditions functionalities (tracking post visits etc.) used site wide.
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*
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* @since 4.11.0
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*
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* @package Divi
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* @sub-package Builder
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*/
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if ( ! defined( 'ABSPATH' ) ) {
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exit;
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}
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/**
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* Display Conditions functionalities to be used site wide.
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*
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* @since 4.11.0
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*/
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class ET_Builder_Display_Conditions {
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/**
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* Hold the class instance.
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*
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* @var Class
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*/
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private static $_instance = null;
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/**
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* Get the singleton instance.
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*
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* @return ET_Builder_Display_Conditions
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*/
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public static function get_instance() {
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if ( ! self::$_instance ) {
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self::$_instance = new self();
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}
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return self::$_instance;
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}
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/**
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* Init actions and filters needed for Display Condition's functionality
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*/
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public function __construct() {
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add_filter( 'et_module_process_display_conditions', array( $this, 'process_display_conditions' ), 10, 3 );
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add_filter( 'et_is_display_conditions_functionality_enabled', array( $this, 'check_if_wp_version_is_sufficient' ) );
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add_action( 'wp', array( $this, 'post_visit_set_cookie' ) );
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add_action( 'template_redirect', array( $this, 'number_of_views_set_cookie' ) );
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add_action( 'save_post', array( $this, 'save_tracking_post_ids' ), 10, 3 );
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add_action( 'delete_post', array( $this, 'delete_tracking_post_ids' ), 10, 1 );
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}
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/**
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* Processes "Display Conditions" of a module and decides whether to display a module or not.
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*
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* We do need to render the module first and then decide to keep it or not, This is because we want the styles of
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* the module (shortcode) and any nested modules inside it to get registered so "Dynamic Assets" would include the
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* styles of all modules used on the page. Ref: https://github.com/elegantthemes/Divi/issues/24965
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*
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* @since 4.13.1
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*
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* @param string $output HTML output of the rendered module.
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* @param string $render_method The render method used to render the module, Typically it's either
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* 'render' or 'render_as_builder_data` @see ET_Builder_Element::_render().
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*
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* @param ET_Builder_Element $element_instance The current instance of ET_Builder_Element.
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*
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* @return string HTML output of the rendered module if conditions are met, Empty otherwise.
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*/
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public function process_display_conditions( $output, $render_method, $element_instance ) {
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/**
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* Filters "Display Conditions" functionality to determine whether to enable or disable the functionality or not.
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*
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* Useful for disabling/enabling "Display Condition" feature site-wide.
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*
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* @since 4.13.1
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*
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* @param boolean True to enable the functionality, False to disable it.
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*/
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$is_display_conditions_enabled = apply_filters( 'et_is_display_conditions_functionality_enabled', true );
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if ( ! $is_display_conditions_enabled ) {
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return $output;
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}
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// Setup variables.
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$is_displayable = true;
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$is_display_conditions_set = isset( $element_instance->props['display_conditions'] ) && ! empty( $element_instance->props['display_conditions'] );
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$is_display_conditions_as_base64_empty = 'W10=' === $element_instance->props['display_conditions'];
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$has_display_conditions = $is_display_conditions_set && ! $is_display_conditions_as_base64_empty;
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// Check if display_conditions attribute is defined, Decode the data and check if it is displayable.
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if ( $has_display_conditions ) {
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$display_conditions_json = base64_decode( $element_instance->props['display_conditions'] ); // phpcs:ignore WordPress.PHP.DiscouragedPHPFunctions.obfuscation_base64_decode -- The returned data is an array and necessary validation checks are performed.
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}
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if ( $has_display_conditions && false !== $display_conditions_json ) {
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$display_conditions = json_decode( $display_conditions_json, true );
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$is_displayable = \ET_Builder_Module_Fields_Factory::get( 'DisplayConditions' )->is_displayable( $display_conditions );
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}
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$is_vb_ajax_nonce_valid = isset( $_POST['et_pb_process_computed_property_nonce'] ) && wp_verify_nonce( sanitize_text_field( $_POST['et_pb_process_computed_property_nonce'] ), 'et_pb_process_computed_property_nonce' );
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// Check if we're rendering on frontend, Then decide whether to keep the output or erase it.
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if ( 'render' === $render_method ) {
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if ( wp_doing_ajax() && $is_vb_ajax_nonce_valid && et_pb_is_pagebuilder_used( get_the_ID() ) ) {
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// "Blog Module" in VB will be rendered like a normal frontend request not as builder data, Here we retain the output
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// so it will always be visible in VB ignoring Display Conditions Ref: https://github.com/elegantthemes/Divi/issues/23309, https://github.com/elegantthemes/Divi/issues/25463.
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$output = $output;
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} elseif ( 'et_pb_post_content' === $element_instance->slug && ! $is_displayable && et_core_is_fb_enabled() ) {
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// When VB is loaded and "Post Content" Module is used in TB and it's not displayable, set the correct
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// output so it'd be displayed in VB and TB respectively Ref: https://github.com/elegantthemes/Divi/issues/23479.
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$output = $output;
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} else {
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// All other scenarios will fall here, Normal frontend request, AJAX frontend request, etc.
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$output = ( $is_displayable ) ? $output : '';
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}
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}
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return $output;
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}
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/**
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* Checks if WordPress version is sufficient for "Display Conditions" feature.
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*
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* @since 4.13.1
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*
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* @param boolean $is_display_conditions_enabled True if "Display Conditions" functionality is enabled, False if it's disabled.
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*
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* @return boolean True if WordPress version is sufficient & "Display Condition" functionality is enabled, False otherwise.
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*/
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public function check_if_wp_version_is_sufficient( $is_display_conditions_enabled ) {
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/**
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* We intentionally check `$is_display_conditions_enabled` to avoid enabling the functionality if it has been
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* disabled via `add_filter()` with lower priority sooner.
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*/
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return version_compare( get_bloginfo( 'version' ), '5.3', '>=' ) && $is_display_conditions_enabled ? true : false;
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}
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/**
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* Saves Post IDs selected in PageVisit/PostVisit Display Conditions into WP Options.
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*
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* This data will be used to only track the Posts which are selected by the user
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* It is to keep the PageVisit/PostVisit related Cookie minimal and under 4KB limitation.
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*
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* @since 4.11.0
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*
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* @param int $post_id Post ID which is being saved.
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* @param WP_Post $post Post object which is being saved.
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* @param bool $update Whether this is an existing post being updated.
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*
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* @return void
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*/
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public function save_tracking_post_ids( $post_id, $post, $update ) {
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/**
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* Filters "Display Conditions" functionality to determine whether to enable or disable the functionality or not.
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*
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* Useful for disabling/enabling "Display Condition" feature site-wide.
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*
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* @since 4.13.1
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*
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* @param boolean True to enable the functionality, False to disable it.
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*/
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$is_display_conditions_enabled = apply_filters( 'et_is_display_conditions_functionality_enabled', true );
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if ( ! $is_display_conditions_enabled ) {
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return;
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}
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/**
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* Validation and Security Checks.
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*/
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if ( ! $post || ! $post instanceof WP_Post ) {
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return;
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}
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if ( defined( 'DOING_AUTOSAVE' ) && DOING_AUTOSAVE ) {
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return;
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}
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if ( wp_is_post_autosave( $post ) || wp_is_post_revision( $post ) ) {
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return;
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}
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$post_type = get_post_type_object( $post->post_type );
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if ( ! $post_type instanceof WP_Post_Type || ! current_user_can( $post_type->cap->edit_post, $post_id ) ) {
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return;
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}
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if ( ! isset( $_POST['et_fb_save_nonce'] ) || ! wp_verify_nonce( sanitize_text_field( $_POST['et_fb_save_nonce'] ), 'et_fb_save_nonce' ) ) {
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return;
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}
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/**
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* Setup Prerequisites.
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*/
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$tracking_post_ids = [];
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$content = get_the_content( null, false, $post );
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$preg_match = preg_match_all( '/display_conditions="[^"]*"/mi', $content, $matches, PREG_SET_ORDER ); // Return format: `display_conditions="base_64_encoded_data"`.
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$display_conditions_attrs = array_reduce( $matches, 'array_merge', [] ); // Flatten and Store All `display_conditions` attributes found.
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/**
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* Decode each `display_conditions` attribute, and store post IDs used in PageVisit/PostVisit conditions.
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*/
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foreach ( $display_conditions_attrs as $display_condition_attr ) {
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$display_condition_base64 = substr( $display_condition_attr, strpos( $display_condition_attr, '"' ), -1 );
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$display_conditions = json_decode( base64_decode( $display_condition_base64 ), true ); // phpcs:ignore WordPress.PHP.DiscouragedPHPFunctions.obfuscation_base64_decode -- The returned data is an array and necessary validation checks are performed.
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if ( ! is_array( $display_conditions ) ) {
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continue;
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}
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foreach ( $display_conditions as $display_condition ) {
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$condition_name = $display_condition['condition'];
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$condition_settings = $display_condition['conditionSettings'];
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if ( 'pageVisit' !== $condition_name && 'postVisit' !== $condition_name ) {
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continue;
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}
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$pages_raw = isset( $condition_settings['pages'] ) ? $condition_settings['pages'] : [];
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$pages_ids = array_map(
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function( $item ) {
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return isset( $item['value'] ) ? (int) $item['value'] : null;
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},
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$pages_raw
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);
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$pages_ids = array_filter( $pages_ids );
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$tracking_post_ids = array_merge( $pages_ids, $tracking_post_ids );
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}
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}
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$tracking_post_ids = array_unique( $tracking_post_ids );
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if ( $tracking_post_ids ) {
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$result = [ (int) $post_id => $tracking_post_ids ];
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} else {
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$result = null;
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}
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$wp_option = get_option( 'et_display_conditions_tracking_post_ids', null );
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// If option exist, Either update it OR remove from it.
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if ( is_array( $wp_option ) ) {
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if ( $result ) {
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$result = array_replace( $wp_option, $result );
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} else {
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$result = array_filter(
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$wp_option,
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function( $key ) use ( $post_id ) {
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return $key !== $post_id;
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},
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ARRAY_FILTER_USE_KEY
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);
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}
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}
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if ( $wp_option === $result ) {
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return;
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}
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update_option( 'et_display_conditions_tracking_post_ids', $result );
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}
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/**
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* Deletes Post IDs selected in PageVisit/PostVisit Display Conditions from WP Options.
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*
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* This data will be used to only track the Posts which are selected by the user
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* It is to keep the PageVisit/PostVisit related Cookie minimal and under 4KB limitation.
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*
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* @since 4.11.0
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*
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* @param int $post_id Post ID which is being deleted.
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*
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* @return void
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*/
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public function delete_tracking_post_ids( $post_id ) {
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/**
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* Filters "Display Conditions" functionality to determine whether to enable or disable the functionality or not.
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*
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* Useful for disabling/enabling "Display Condition" feature site-wide.
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*
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* @since 4.13.1
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*
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* @param boolean True to enable the functionality, False to disable it.
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*/
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$is_display_conditions_enabled = apply_filters( 'et_is_display_conditions_functionality_enabled', true );
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if ( ! $is_display_conditions_enabled ) {
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return;
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}
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$post = get_post( $post_id );
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$wp_option = get_option( 'et_display_conditions_tracking_post_ids', null );
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$is_wp_option_exist = is_array( $wp_option ) && ! empty( $wp_option );
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if ( ! $is_wp_option_exist ) {
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return;
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}
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if ( ! $post || ! $post instanceof WP_Post ) {
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return;
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}
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// Get real Post ID if Revision ID is passed, Using `Empty Trash` button will set $post_id to revision id.
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$revision_parent_id = wp_is_post_revision( $post_id );
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if ( $revision_parent_id ) {
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$post_id = $revision_parent_id;
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}
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$post_type = get_post_type_object( $post->post_type );
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if ( ! current_user_can( $post_type->cap->delete_post, $post_id ) ) {
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return;
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}
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$result = array_filter(
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$wp_option,
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function( $key ) use ( $post_id ) {
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return (int) $key !== (int) $post_id;
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},
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ARRAY_FILTER_USE_KEY
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);
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if ( $wp_option === $result ) {
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return;
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}
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update_option( 'et_display_conditions_tracking_post_ids', $result );
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}
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/**
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* Sets a cookie based on page visits so Page/Post Visit Display Conditions would function as expected.
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*
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* @since 4.11.0
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*
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* @return void
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*/
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public function post_visit_set_cookie() {
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/**
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* Filters "Display Conditions" functionality to determine whether to enable or disable the functionality or not.
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*
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* Useful for disabling/enabling "Display Condition" feature site-wide.
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*
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* @since 4.13.1
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*
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* @param boolean True to enable the functionality, False to disable it.
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*/
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$is_display_conditions_enabled = apply_filters( 'et_is_display_conditions_functionality_enabled', true );
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if ( ! $is_display_conditions_enabled ) {
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return;
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}
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if ( ! is_singular() ) {
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return;
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}
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$current_post_id = get_queried_object_id();
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$new_cookie = [];
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$has_visited_page_before = false;
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$wp_option = get_option( 'et_display_conditions_tracking_post_ids', null );
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$is_wp_option_exist = is_array( $wp_option ) && ! empty( $wp_option );
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$flatten_wp_option = is_array( $wp_option ) ? array_unique( array_reduce( $wp_option, 'array_merge', [] ) ) : [];
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$is_post_id_in_wp_option = array_search( $current_post_id, $flatten_wp_option, true ) !== false;
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if ( ! $is_wp_option_exist || ! $is_post_id_in_wp_option ) {
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return;
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}
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if ( isset( $_COOKIE['divi_post_visit'] ) ) {
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$new_cookie = json_decode( base64_decode( $_COOKIE['divi_post_visit'] ), true ); // phpcs:ignore ET.Sniffs.ValidatedSanitizedInput, WordPress.PHP.DiscouragedPHPFunctions.obfuscation_base64_decode -- Cookie is not stored or displayed therefore XSS safe, base64_decode returned data is an array and necessary validation checks are performed.
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}
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if ( $new_cookie && is_array( $new_cookie ) ) {
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$has_visited_page_before = array_search( $current_post_id, array_column( $new_cookie, 'id' ), true );
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}
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if ( false === $has_visited_page_before ) {
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$new_cookie[] = [
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'id' => $current_post_id,
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];
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$new_cookie = base64_encode( wp_json_encode( $new_cookie ) ); // phpcs:ignore WordPress.PHP.DiscouragedPHPFunctions.obfuscation_base64_encode -- base64_encode data is an array.
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setrawcookie( 'divi_post_visit', $new_cookie, time() + 3600 * 24 * 365, COOKIEPATH, COOKIE_DOMAIN, is_ssl() );
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}
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}
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/**
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* Sets a cookie based on how many times a module is displayed so "Number of Views" Condition would function as expected.
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*
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* @since 4.11.0
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*
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* @return void
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*/
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public function number_of_views_set_cookie() {
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/**
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* Filters "Display Conditions" functionality to determine whether to enable or disable the functionality or not.
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*
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* Useful for disabling/enabling "Display Condition" feature site-wide.
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*
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* @since 4.13.1
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*
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* @param boolean True to enable the functionality, False to disable it.
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*/
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$is_display_conditions_enabled = apply_filters( 'et_is_display_conditions_functionality_enabled', true );
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if ( ! $is_display_conditions_enabled ) {
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return;
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}
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// Do not run on VB itself.
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if ( et_core_is_fb_enabled() ) {
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return;
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}
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/**
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* This is to ensure that network request such as '/favicon.ico' won't change the cookie
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* since those requests do trigger these functions to run again without the proper context
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* resulting updating cookie >=2 times on 1 page load.
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*/
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$is_existing_wp_query = ( is_home() || is_404() || is_archive() || is_search() );
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if ( get_queried_object_id() === 0 && ! $is_existing_wp_query ) {
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return;
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}
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// Setup prerequisite.
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$display_conditions_attrs = [];
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$cookie = [];
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$entire_page_content = \Feature\ContentRetriever\ET_Builder_Content_Retriever::init()->get_entire_page_content( get_queried_object_id() );
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// Find all display conditions used in the page, flat the results, filter to only include NumberOfViews conditions.
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if ( preg_match_all( '/(?<=display_conditions=")[^"]*/mi', $entire_page_content, $matches, PREG_SET_ORDER ) ) {
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$display_conditions_attrs = array_reduce( $matches, 'array_merge', [] ); // Flatten and Store All `display_conditions` attributes found.
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$cookie = $this->number_of_views_process_conditions( $display_conditions_attrs );
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if ( false === $cookie ) {
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return;
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}
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}
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/**
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* Encode cookie content and set cookie only if quired object id can be retrieved.
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* `serrawcookie` is used to ignore automatic `urlencode` with `setcookie` since it corrupts base64 data.
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*/
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if ( ! empty( $cookie ) ) {
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$cookie = base64_encode( wp_json_encode( $cookie ) ); // phpcs:ignore WordPress.PHP.DiscouragedPHPFunctions.obfuscation_base64_encode -- base64_encode data is an array.
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setrawcookie( 'divi_module_views', $cookie, time() + 3600 * 24 * 365, COOKIEPATH, COOKIE_DOMAIN );
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}
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}
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/**
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* Checks "NumberOFViews" conditions against respective $_COOKIE content and updates/reset the
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* condition when necessary.
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*
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* @since 4.11.0
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*
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* @param array $display_conditions_attrs Array of base64 encoded conditions.
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*
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* @return array
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*/
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public function number_of_views_process_conditions( $display_conditions_attrs ) {
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$is_cookie_set = isset( $_COOKIE['divi_module_views'] );
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$current_datetime = current_datetime();
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$decoded_cookie = $is_cookie_set ? json_decode( base64_decode( $_COOKIE['divi_module_views'] ), true ) : []; // phpcs:ignore ET.Sniffs.ValidatedSanitizedInput, WordPress.PHP.DiscouragedPHPFunctions.obfuscation_base64_decode -- Cookie is not stored or displayed therefore XSS safe, The returned data is an array and necessary validation checks are performed.
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$cookie = is_array( $decoded_cookie ) ? $decoded_cookie : [];
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// Decode NumberOfViews conditions one by one then set or update cookie.
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foreach ( $display_conditions_attrs as $condition_base64 ) {
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$display_conditions = json_decode( base64_decode( $condition_base64 ), true ); // phpcs:ignore WordPress.PHP.DiscouragedPHPFunctions.obfuscation_base64_decode -- The returned data is an array and necessary validation checks are performed.
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if ( ! is_array( $display_conditions ) ) {
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continue;
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}
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foreach ( $display_conditions as $display_condition ) {
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$condition_id = $display_condition['id'];
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$condition_name = $display_condition['condition'];
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$condition_settings = $display_condition['conditionSettings'];
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if ( 'numberOfViews' !== $condition_name ) {
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continue;
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}
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$is_reset_on = 'on' === $condition_settings['resetAfterDuration'] ? true : false;
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$reset_time = $condition_settings['displayAgainAfter'] . ' ' . $condition_settings['displayAgainAfterUnit'];
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$is_condition_id_in_cookie = array_search( $condition_id, array_column( $cookie, 'id' ), true ) !== false ? true : false;
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if ( $is_reset_on && $is_cookie_set && isset( $cookie[ $condition_id ] ) ) {
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$first_visit_timestamp = $cookie[ $condition_id ]['first_visit_timestamp'];
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$first_visit_datetime = $current_datetime->setTimestamp( $first_visit_timestamp );
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$reset_datetime = $first_visit_datetime->modify( $reset_time );
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if ( $current_datetime > $reset_datetime ) {
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$cookie[ $condition_id ]['visit_count'] = 1;
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$cookie[ $condition_id ]['first_visit_timestamp'] = $current_datetime->getTimestamp();
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continue;
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}
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}
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if ( $is_cookie_set && $is_condition_id_in_cookie ) {
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$cookie[ $condition_id ]['visit_count'] += 1;
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} else {
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$cookie[ $condition_id ] = [
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'id' => $condition_id,
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'visit_count' => 1,
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'first_visit_timestamp' => $current_datetime->getTimestamp(),
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];
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}
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}
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}
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return $cookie;
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}
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}
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ET_Builder_Display_Conditions::get_instance();
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