<?php

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if ( defined( 'WPSCDISABLEDELETEBUTTON' ) ) {

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return;

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}

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/**

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* Adds "Delete Cache" button in WP Toolbar.

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*/

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function wpsc_admin_bar_render( $wp_admin_bar ) {

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if ( ! function_exists( 'current_user_can' ) || ! is_user_logged_in() ) {

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return false;

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}

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$path_to_home = rtrim( (string) parse_url( get_option( 'home' ), PHP_URL_PATH ), '/' );

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if ( ( is_singular() || is_archive() || is_front_page() || is_search() ) && current_user_can( 'delete_others_posts' ) ) {

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$site_regex = preg_quote( $path_to_home, '`' );

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$req_uri = preg_replace( '/[ <>\'\"\r\n\t\(\)]/', '', $_SERVER[ 'REQUEST_URI' ] );

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$path = preg_replace( '`^' . $site_regex . '`', '', $req_uri );

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$wp_admin_bar->add_menu( array(

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'parent' => '',

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'id' => 'delete-cache',

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'title' => __( 'Delete Cache', 'wp-super-cache' ),

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'meta' => array( 'title' => __( 'Delete cache of the current page', 'wp-super-cache' ) ),

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'href' => wp_nonce_url( admin_url( 'index.php?action=delcachepage&path=' . rawurlencode( $path ) ), 'delete-cache-' . $path . '_0', 'nonce' )

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) );

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}

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if ( is_admin() && ( wpsupercache_site_admin() || current_user_can( 'delete_others_posts' ) ) ) {

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$wp_admin_bar->add_menu( array(

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'parent' => '',

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'id' => 'delete-cache',

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'title' => __( 'Delete Cache', 'wp-super-cache' ),

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'meta' => array( 'title' => __( 'Delete Super Cache cached files', 'wp-super-cache' ) ),

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'href' => wp_nonce_url( admin_url( 'index.php?admin=1&action=delcachepage&path=' . rawurlencode( trailingslashit( $path_to_home ) ) ), 'delete-cache-' . trailingslashit( $path_to_home ) . '_1', 'nonce' )

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) );

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}

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}

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add_action( 'admin_bar_menu', 'wpsc_admin_bar_render', 99 );

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function wpsc_delete_cache_scripts() {

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if ( ! is_user_logged_in() ) {

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return;

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}

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if (

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is_plugin_active( 'amp/amp.php' ) ||

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( function_exists( 'ampforwp_is_amp_endpoint' ) && ampforwp_is_amp_endpoint() )

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) {

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wp_cache_debug( 'AMP detected. Not loading Delete Cache button JavaScript.' );

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return;

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}

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$path_to_home = rtrim( (string) parse_url( get_option( 'home' ), PHP_URL_PATH ), '/' );

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wp_enqueue_script( 'delete-cache-button', plugins_url( '/delete-cache-button.js', __FILE__ ), array('jquery'), '1.0', 1 );

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if ( ( is_singular() || is_archive() || is_front_page() || is_search() ) && current_user_can( 'delete_others_posts' ) ) {

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$site_regex = preg_quote( $path_to_home, '`' );

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$req_uri = preg_replace( '/[ <>\'\"\r\n\t\(\)]/', '', $_SERVER[ 'REQUEST_URI' ] );

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$path_to_home = preg_replace( '`^' . $site_regex . '`', '', $req_uri );

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$admin = 0;

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} else {

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$admin = 1;

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}

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if ( $path_to_home === '' ) {

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$path_to_home = '/';

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}

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$nonce = wp_create_nonce( 'delete-cache-' . $path_to_home . '_' . $admin );

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wp_localize_script( 'delete-cache-button', 'wpsc_ajax', array( 'ajax_url' => admin_url( 'admin-ajax.php' ), 'path' => $path_to_home, 'admin' => $admin, 'nonce' => $nonce ) );

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}

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add_action( 'wp_ajax_ajax-delete-cache', 'wpsc_admin_bar_delete_cache_ajax' );

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add_action( 'admin_enqueue_scripts', 'wpsc_delete_cache_scripts' );

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/**

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* Delete cache for a specific page.

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*/

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function wpsc_admin_bar_delete_cache_ajax() {

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// response output

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header( "Content-Type: application/json" );

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if ( ! wpsc_delete_cache_directory() ) {

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if ( defined( 'WPSCDELETEERROR' ) ) {

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return json_decode( constant( 'WPSCDELETEERROR' ) );

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} else {

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return json_decode( false );

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}

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}

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}

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function wpsc_admin_bar_delete_cache() {

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$referer = wp_get_referer();

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if ( ! isset( $_GET['admin'] ) ) {

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$_GET['admin'] = 0;

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}

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foreach( array( 'path', 'nonce', 'admin' ) as $part ) {

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if ( isset( $_GET[ $part ] ) ) {

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$_POST[ $part ] = $_GET[ $part ];

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}

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}

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wpsc_delete_cache_directory();

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$req_path = isset( $_POST['path'] ) ? sanitize_text_field( stripslashes( $_POST['path'] ) ) : '';

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$valid_nonce = ( $req_path && isset( $_POST['nonce'] ) ) ? wp_verify_nonce( $_POST['nonce'], 'delete-cache-' . $_POST['path'] . '_' . $_POST['admin'] ) : false;

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if (

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$valid_nonce

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&& $referer

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&& $req_path

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&& (

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false !== stripos( $referer, $req_path )

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|| 0 === stripos( $referer, wp_login_url() )

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)

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) {

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/**

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* Hook into the cache deletion process after a successful cache deletion from the admin bar button.

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*

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* @since 1.9

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*

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* @param string $req_path Path of the page where the cache flush was requested.

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* @param string $referer Referer URL.

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*/

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do_action( 'wpsc_after_delete_cache_admin_bar', $req_path, $referer );

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if ( $_POST['admin'] ) {

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wp_safe_redirect( $referer );

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} else {

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wp_safe_redirect( esc_url_raw( home_url( $req_path ) ) );

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}

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exit;

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} else {

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die( "Oops. Problem with nonce. Please delete cached page from settings page." );

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}

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}

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if ( 'delcachepage' === filter_input( INPUT_GET, 'action' ) ) {

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add_action( 'admin_init', 'wpsc_admin_bar_delete_cache' );

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}

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function wpsc_delete_cache_directory() {

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if ( ! current_user_can( 'delete_others_posts' ) ) {

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return false;

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}

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$req_path = isset( $_POST['path'] ) ? sanitize_text_field( stripslashes( $_POST['path'] ) ) : '';

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$valid_nonce = ( $req_path && isset( $_POST['nonce'] ) ) ? wp_verify_nonce( $_POST['nonce'], 'delete-cache-' . $_POST['path'] . '_' . $_POST['admin'] ) : false;

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if ( ! $valid_nonce ) {

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wp_cache_debug( 'wpsc_delete_cache_directory: nonce was not valid' );

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return false;

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}

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$path = $valid_nonce ? realpath( trailingslashit( get_supercache_dir() . str_replace( '..', '', preg_replace( '/:.*$/', '', $req_path ) ) ) ) : false;

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if ( $path ) {

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if ( isset( $_POST['admin'] ) && (int) $_POST['admin'] === 1 ) {

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global $file_prefix;

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wp_cache_debug( 'Cleaning cache for this site.' );

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wp_cache_clean_cache( $file_prefix );

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return;

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}

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$path = trailingslashit( $path );

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$supercachepath = realpath( get_supercache_dir() );

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if ( false === wp_cache_confirm_delete( $path ) || ! str_starts_with( $path, $supercachepath ) ) {

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wp_cache_debug( 'Could not delete directory: ' . $path );

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define( 'WPSCDELETEERROR', 'Could not delete directory' );

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return false;

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}

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wp_cache_debug( 'Deleting cache files in directory: ' . $path );

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wpsc_delete_files( $path );

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return;

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} else {

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wp_cache_debug( 'wpsc_delete_cache_directory: Could not delete directory. It does not exist: ' . esc_attr( $_POST['path'] ) );

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}

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}

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