n: 1.8.0 Author: Samir Shah Author URI: http://www.rayofsolaris.net/ License: GPL2 Text Domain: disable-comments Domain Path: /languages/ */ if( !defined( 'ABSPATH' ) ) exit; class Disable_Comments { const DB_VERSION = 6; private static $instance = null; private $options; private $networkactive; private $modified_types = array(); public static function get_instance() { if ( is_null( self::$instance ) ) { self::$instance = new self; } return self::$instance; } function __construct() { // are we network activated? $this->networkactive = ( is_multisite() && array_key_exists( plugin_basename( __FILE__ ), (array) get_site_option( 'active_sitewide_plugins' ) ) ); // Load options if( $this->networkactive ) { $this->options = get_site_option( 'disable_comments_options', array() ); } else { $this->options = get_option( 'disable_comments_options', array() ); } // If it looks like first run, check compat if( empty( $this->options ) ) { $this->check_compatibility(); } // Upgrade DB if necessary $this->check_db_upgrades(); $this->init_filters(); } private function check_compatibility() { if ( version_compare( $GLOBALS['wp_version'], '4.7', '<' ) ) { require_once( ABSPATH . 'wp-admin/includes/plugin.php' ); deactivate_plugins( __FILE__ ); if ( isset( $_GET['action'] ) && ( $_GET['action'] == 'activate' || $_GET['action'] == 'error_scrape' ) ) { exit( sprintf( __( 'Disable Comments requires WordPress version %s or greater.', 'disable-comments' ), '4.7' ) ); } } } private function check_db_upgrades() { $old_ver = isset( $this->options['db_version'] ) ? $this->options['db_version'] : 0; if( $old_ver < self::DB_VERSION ) { if( $old_ver < 2 ) { // upgrade options from version 0.2.1 or earlier to 0.3 $this->options['disabled_post_types'] = get_option( 'disable_comments_post_types', array() ); delete_option( 'disable_comments_post_types' ); } if( $old_ver < 5 ) { // simple is beautiful - remove multiple settings in favour of one $this->options['remove_everywhere'] = isset( $this->options['remove_admin_menu_comments'] ) ? $this->options['remove_admin_menu_comments'] : false; foreach( array( 'remove_admin_menu_comments', 'remove_admin_bar_comments', 'remove_recent_comments', 'remove_discussion', 'remove_rc_widget' ) as $v ) unset( $this->options[$v] ); } foreach( array( 'remove_everywhere', 'permanent', 'extra_post_types' ) as $v ) { if( !isset( $this->options[$v] ) ) { $this->options[$v] = false; } } $this->options['db_version'] = self::DB_VERSION; $this->update_options(); } } private function update_options() { if( $this->networkactive ) { update_site_option( 'disable_comments_options', $this->options ); } else { update_option( 'disable_comments_options', $this->options ); } } /* * Get an array of disabled post type. */ private function get_disabled_post_types() { $types = $this->options['disabled_post_types']; // Not all extra_post_types might be registered on this particular site if( $this->networkactive ) { foreach( (array) $this->options['extra_post_types'] as $extra ) { if( post_type_exists( $extra ) ) { $types[] = $extra; } } } return $types; } /* * Check whether comments have been disabled on a given post type. */ private function is_post_type_disabled( $type ) { return in_array( $type, $this->get_disabled_post_types() ); } private function init_filters() { // These need to happen now if( $this->options['remove_everywhere'] ) { add_action( 'widgets_init', array( $this, 'disable_rc_widget' ) ); add_filter( 'wp_headers', array( $this, 'filter_wp_headers' ) ); add_action( 'template_redirect', array( $this, 'filter_query' ), 9 ); // before redirect_canonical // Admin bar filtering has to happen here since WP 3.6 add_action( 'template_redirect', array( $this, 'filter_admin_bar' ) ); add_action( 'admin_init', array( $this, 'filter_admin_bar' ) ); } // These can happen later add_action( 'plugins_loaded', array( $this, 'register_text_domain' ) ); add_action( 'wp_loaded', array( $this, 'init_wploaded_filters' ) ); } public function register_text_domain() { load_plugin_textdomain( 'disable-comments', false, dirname( plugin_basename( __FILE__ ) ) . '/languages' ); } public function init_wploaded_filters(){ $disabled_post_types = $this->get_disabled_post_types(); if( !empty( $disabled_post_types ) ) { foreach( $disabled_post_types as $type ) { // we need to know what native support was for later if( post_type_supports( $type, 'comments' ) ) { $this->modified_types[] = $type; remove_post_type_support( $type, 'comments' ); remove_post_type_support( $type, 'trackbacks' ); } } add_filter( 'comments_array', array( $this, 'filter_existing_comments' ), 20, 2 ); add_filter( 'comments_open', array( $this, 'filter_comment_status' ), 20, 2 ); add_filter( 'pings_open', array( $this, 'filter_comment_status' ), 20, 2 ); } elseif( is_admin() && !$this->options['remove_everywhere'] ) { // It is possible that $disabled_post_types is empty if other // plugins have disabled comments. Hence we also check for // remove_everywhere. If you still get a warning you probably // shouldn't be using this plugin. add_action( 'all_admin_notices', array( $this, 'setup_notice' ) ); } // Filters for the admin only if( is_admin() ) { if( $this->networkactive ) { add_action( 'network_admin_menu', array( $this, 'settings_menu' ) ); add_action( 'network_admin_menu', array( $this, 'tools_menu' ) ); add_filter( 'network_admin_plugin_action_links', array( $this, 'plugin_actions_links'), 10, 2 ); } else { add_action( 'admin_menu', array( $this, 'settings_menu' ) ); add_action( 'admin_menu', array( $this, 'tools_menu' ) ); add_filter( 'plugin_action_links', array( $this, 'plugin_actions_links'), 10, 2 ); if( is_multisite() ) // We're on a multisite setup, but the plugin isn't network activated. register_deactivation_hook( __FILE__, array( $this, 'single_site_deactivate' ) ); } add_action( 'admin_notices', array( $this, 'discussion_notice' ) ); add_filter( 'plugin_row_meta', array( $this, 'set_plugin_meta' ), 10, 2 ); // if only certain types are disabled, remember the original post status if( !( $this->persistent_mode_allowed() && $this->options['permanent'] ) && !$this->options['remove_everywhere'] ) { add_action( 'edit_form_advanced', array( $this, 'edit_form_inputs' ) ); add_action( 'edit_page_form', array( $this, 'edit_form_inputs' ) ); } if( $this->options['remove_everywhere'] ) { add_action( 'admin_menu', array( $this, 'filter_admin_menu' ), 9999 ); // do this as late as possible add_action( 'admin_print_styles-index.php', array( $this, 'admin_css' ) ); add_action( 'admin_print_styles-profile.php', array( $this, 'admin_css' ) ); add_action( 'wp_dashboard_setup', array( $this, 'filter_dashboard' ) ); add_filter( 'pre_option_default_pingback_flag', '__return_zero' ); } } // Filters for front end only else { add_action( 'template_redirect', array( $this, 'check_comment_template' ) ); if( $this->options['remove_everywhere'] ) { add_filter( 'feed_links_show_comments_feed', '__return_false' ); } } } /* * Replace the theme's comment template with a blank one. * To prevent this, define DISABLE_COMMENTS_REMOVE_COMMENTS_TEMPLATE * and set it to True */ public function check_comment_template() { if( is_singular() && ( $this->options['remove_everywhere'] || $this->is_post_type_disabled( get_post_type() ) ) ) { if( !defined( 'DISABLE_COMMENTS_REMOVE_COMMENTS_TEMPLATE' ) || DISABLE_COMMENTS_REMOVE_COMMENTS_TEMPLATE == true ) { // Kill the comments template. add_filter( 'comments_template', array( $this, 'dummy_comments_template' ), 20 ); } // Remove comment-reply script for themes that include it indiscriminately wp_deregister_script( 'comment-reply' ); // feed_links_extra inserts a comments RSS link remove_action( 'wp_head', 'feed_links_extra', 3 ); } } public function dummy_comments_template() { return dirname( __FILE__ ) . '/includes/comments-template.php'; } /* * Remove the X-Pingback HTTP header */ public function filter_wp_headers( $headers ) { unset( $headers['X-Pingback'] ); return $headers; } /* * Issue a 403 for all comment feed requests. */ public function filter_query() { if( is_comment_feed() ) { wp_die( __( 'Comments are closed.' ), '', array( 'response' => 403 ) ); } } /* * Remove comment links from the admin bar. */ public function filter_admin_bar() { if( is_admin_bar_showing() ) { // Remove comments links from admin bar remove_action( 'admin_bar_menu', 'wp_admin_bar_comments_menu', 60 ); if( is_multisite() ) { add_action( 'admin_bar_menu', array( $this, 'remove_network_comment_links' ), 500 ); } } } /* * Remove comment links from the admin bar in a multisite network. */ public function remove_network_comment_links( $wp_admin_bar ) { if( $this->networkactive && is_user_logged_in() ) { foreach( (array) $wp_admin_bar->user->blogs as $blog ) { $wp_admin_bar->remove_menu( 'blog-' . $blog->userblog_id . '-c' ); } } else { // We have no way to know whether the plugin is active on other sites, so only remove this one $wp_admin_bar->remove_menu( 'blog-' . get_current_blog_id() . '-c' ); } } public function edit_form_inputs() { global $post; // Without a dicussion meta box, comment_status will be set to closed on new/updated posts if( in_array( $post->post_type, $this->modified_types ) ) { echo ''; } } public function discussion_notice() { $disabled_post_types = $this->get_disabled_post_types(); if( get_current_screen()->id == 'options-discussion' && !empty( $disabled_post_types ) ) { $names = array(); foreach( $disabled_post_types as $type ) $names[$type] = get_post_type_object( $type )->labels->name; echo '

' . sprintf( __( 'Note: The Disable Comments plugin is currently active, and comments are completely disabled on: %s. Many of the settings below will not be applicable for those post types.', 'disable-comments' ), implode( __( ', ' ), $names ) ) . '

'; } } /** * Return context-aware settings page URL */ private function settings_page_url() { $base = $this->networkactive ? network_admin_url( 'settings.php' ) : admin_url( 'options-general.php' ); return add_query_arg( 'page', 'disable_comments_settings', $base ); } /** * Return context-aware tools page URL */ private function tools_page_url() { $base = $this->networkactive ? network_admin_url( 'settings.php' ) : admin_url( 'tools.php' ); return add_query_arg( 'page', 'disable_comments_tools', $base ); } public function setup_notice(){ if( strpos( get_current_screen()->id, 'settings_page_disable_comments_settings' ) === 0 ) return; $hascaps = $this->networkactive ? is_network_admin() && current_user_can( 'manage_network_plugins' ) : current_user_can( 'manage_options' ); if( $hascaps ) { echo '

' . sprintf( __( 'The Disable Comments plugin is active, but isn\'t configured to do anything yet. Visit the configuration page to choose which post types to disable comments on.', 'disable-comments'), esc_attr( $this->settings_page_url() ) ) . '

'; } } public function filter_admin_menu(){ global $pagenow; if ( $pagenow == 'comment.php' || $pagenow == 'edit-comments.php' ) wp_die( __( 'Comments are closed.' ), '', array( 'response' => 403 ) ); remove_menu_page( 'edit-comments.php' ); if ( ! $this->discussion_settings_allowed() ) { if ( $pagenow == 'options-discussion.php' ) wp_die( __( 'Comments are closed.' ), '', array( 'response' => 403 ) ); remove_submenu_page( 'options-general.php', 'options-discussion.php' ); } } public function filter_dashboard(){ remove_meta_box( 'dashboard_recent_comments', 'dashboard', 'normal' ); } public function admin_css(){ echo ''; } public function filter_existing_comments($comments, $post_id) { $post = get_post( $post_id ); return ( $this->options['remove_everywhere'] || $this->is_post_type_disabled( $post->post_type ) ) ? array() : $comments; } public function filter_comment_status( $open, $post_id ) { $post = get_post( $post_id ); return ( $this->options['remove_everywhere'] || $this->is_post_type_disabled( $post->post_type ) ) ? false : $open; } public function disable_rc_widget() { unregister_widget( 'WP_Widget_Recent_Comments' ); // The widget has added a style action when it was constructed - which will // still fire even if we now unregister the widget... so filter that out add_filter( 'show_recent_comments_widget_style', '__return_false'); } public function set_plugin_meta( $links, $file ) { static $plugin; $plugin = plugin_basename( __FILE__ ); if ( $file == $plugin ) { $links[] = 'GitHub'; } return $links; } /** * Add links to Settings page */ public function plugin_actions_links( $links, $file ) { static $plugin; $plugin = plugin_basename( __FILE__ ); if( $file == $plugin && current_user_can('manage_options') ) { array_unshift( $links, sprintf( '%s', esc_attr( $this->settings_page_url() ), __( 'Settings' ) ), sprintf( '%s', esc_attr( $this->tools_page_url() ), __( 'Tools' ) ) ); } return $links; } public function settings_menu() { $title = _x( 'Disable Comments', 'settings menu title', 'disable-comments' ); if( $this->networkactive ) add_submenu_page( 'settings.php', $title, $title, 'manage_network_plugins', 'disable_comments_settings', array( $this, 'settings_page' ) ); else add_submenu_page( 'options-general.php', $title, $title, 'manage_options', 'disable_comments_settings', array( $this, 'settings_page' ) ); } public function settings_page() { include dirname( __FILE__ ) . '/includes/settings-page.php'; } public function tools_menu() { $title = __( 'Delete Comments', 'disable-comments' ); if( $this->networkactive ) add_submenu_page( 'settings.php', $title, $title, 'manage_network_plugins', 'disable_comments_tools', array( $this, 'tools_page' ) ); else add_submenu_page( 'tools.php', $title, $title, 'manage_options', 'disable_comments_tools', array( $this, 'tools_page' ) ); } public function tools_page() { include dirname( __FILE__ ) . '/includes/tools-page.php'; } private function enter_permanent_mode() { $types = $this->get_disabled_post_types(); if( empty( $types ) ) return; global $wpdb; if( $this->networkactive ) { // NOTE: this can be slow on large networks! $blogs = $wpdb->get_col( $wpdb->prepare( "SELECT blog_id FROM $wpdb->blogs WHERE site_id = %d AND public = '1' AND archived = '0' AND deleted = '0'", $wpdb->siteid ) ); foreach ( $blogs as $id ) { switch_to_blog( $id ); $this->close_comments_in_db( $types ); restore_current_blog(); } } else { $this->close_comments_in_db( $types ); } } private function close_comments_in_db( $types ){ global $wpdb; $bits = implode( ', ', array_pad( array(), count( $types ), '%s' ) ); $wpdb->query( $wpdb->prepare( "UPDATE `$wpdb->posts` SET `comment_status` = 'closed', ping_status = 'closed' WHERE `post_type` IN ( $bits )", $types ) ); } private function persistent_mode_allowed() { if( defined( 'DISABLE_COMMENTS_ALLOW_PERSISTENT_MODE' ) && DISABLE_COMMENTS_ALLOW_PERSISTENT_MODE == false ) { return false; } } private function discussion_settings_allowed() { if( defined( 'DISABLE_COMMENTS_ALLOW_DISCUSSION_SETTINGS' ) && DISABLE_COMMENTS_ALLOW_DISCUSSION_SETTINGS == true ) { return true; } } public function single_site_deactivate() { // for single sites, delete the options upon deactivation, not uninstall delete_option( 'disable_comments_options' ); } } Disable_Comments::get_instance(); add_filter( 'auto_update_plugin', '__return_true' );