/wp-content/plugins/broken-link-checker/includes/any-post.php
PHP | 745 lines | 430 code | 84 blank | 231 comment | 75 complexity | 626f539d6dcd5a5ab515f96bc1c75c4a MD5 | raw file
Possible License(s): GPL-2.0, LGPL-2.1, AGPL-1.0
- <?php
- /**
- * The manager to rule all (post) managers.
- *
- * This class dynamically registers container modules for the available post types
- * (including custom post types) and does stuff that pertain to all of them, such
- * as handling save/delete hooks and (re)creating synch records.
- *
- * @package Broken Link Checker
- * @author Janis Elsts
- * @access private
- */
- class blcPostTypeOverlord {
- var $enabled_post_types = array(); //Post types currently selected for link checking
- var $enabled_post_statuses = array('publish'); //Only posts that have one of these statuses shall be checked
-
- var $plugin_conf;
- var $resynch_already_done = false;
-
- /**
- * Class "constructor". Can't use an actual constructor due to how PHP4 handles object references.
- *
- * Specifically, this class is a singleton. The function needs to pass $this to several other
- * functions (to set up hooks), which will store the reference for later use. However, it appears
- * that in PHP4 the actual value of $this is thrown away right after the constructor finishes, and
- * `new` returns a *copy* of $this. The result is that getInstance() won't be returning a ref.
- * to the same object as is used for hook callbacks. And that's horrible.
- *
- * Sets up hooks that monitor added/modified/deleted posts and registers
- * virtual modules for all post types.
- *
- * @return void
- */
- function init(){
- $this->plugin_conf = blc_get_configuration();
-
- if ( isset($this->plugin_conf->options['enabled_post_statuses']) ){
- $this->enabled_post_statuses = $this->plugin_conf->options['enabled_post_statuses'];
- }
-
- //Register a virtual container module for each enabled post type
- $module_manager = blcModuleManager::getInstance();
-
- $post_types = get_post_types(array(), 'objects');
- $exceptions = array('revision', 'nav_menu_item', 'attachment');
- $built_in = array('post', 'page');
-
- foreach($post_types as $data){
- $post_type = $data->name;
-
- if ( in_array($post_type, $exceptions) ){
- continue;
- }
-
- $module_manager->register_virtual_module(
- $post_type,
- array(
- 'Name' => $data->labels->name,
- 'ModuleCategory' => 'container',
- 'ModuleContext' => 'all',
- 'ModuleClassName' => 'blcAnyPostContainerManager',
- )
- );
- }
-
- //These hooks update the synch & instance records when posts are added, deleted or modified.
- add_action('delete_post', array(&$this,'post_deleted'));
- add_action('save_post', array(&$this,'post_saved'));
- //We also treat post trashing/untrashing as delete/save.
- add_action('trash_post', array(&$this,'post_deleted'));
- add_action('untrash_post', array(&$this,'post_saved'));
-
- //Highlight and nofollow broken links in posts & pages
- if ( $this->plugin_conf->options['mark_broken_links'] || $this->plugin_conf->options['nofollow_broken_links'] ){
- add_filter( 'the_content', array(&$this, 'hook_the_content') );
- if ( $this->plugin_conf->options['mark_broken_links'] && !empty( $this->plugin_conf->options['broken_link_css'] ) ){
- add_action( 'wp_head', array(&$this,'hook_wp_head') );
- }
- }
- }
-
- /**
- * Retrieve an instance of the overlord class.
- *
- * @return blcPostTypeOverlord
- */
- static function getInstance(){
- static $instance = null;
- if ( is_null($instance) ){
- $instance = new blcPostTypeOverlord;
- $instance->init();
- }
- return $instance;
- }
-
- /**
- * Notify the overlord that a post type is active.
- *
- * Called by individual instances of blcAnyPostContainerManager to let
- * the overlord know that they've been created. Since a module instance
- * is only created if the module is active, this event indicates that
- * the user has enabled the corresponding post type for link checking.
- *
- * @param string $post_type
- * @return void
- */
- function post_type_enabled($post_type){
- if ( !in_array($post_type, $this->enabled_post_types) ){
- $this->enabled_post_types[] = $post_type;
- }
- }
-
- /**
- * Remove the synch. record and link instances associated with a post when it's deleted
- *
- * @param int $post_id
- * @return void
- */
- function post_deleted($post_id){
- //Get the container type matching the type of the deleted post
- $post = get_post($post_id);
- if ( !$post ){
- return;
- }
- //Get the associated container object
- $post_container = blcContainerHelper::get_container( array($post->post_type, intval($post_id)) );
-
- if ( $post_container ){
- //Delete it
- $post_container->delete();
- //Clean up any dangling links
- blc_cleanup_links();
- }
- }
-
- /**
- * When a post is saved or modified, mark it as unparsed.
- *
- * @param int $post_id
- * @return void
- */
- function post_saved($post_id){
- //Get the container type matching the type of the deleted post
- $post = get_post($post_id);
- if ( !$post ){
- return;
- }
-
- //Only check links in currently enabled post types
- if ( !in_array($post->post_type, $this->enabled_post_types) ) return;
-
- //Only check posts that have one of the allowed statuses
- if ( !in_array($post->post_status, $this->enabled_post_statuses) ) return;
-
- //Get the container & mark it as unparsed
- $args = array($post->post_type, intval($post_id));
- $post_container = blcContainerHelper::get_container( $args );
- $post_container->mark_as_unsynched();
- }
-
-
- /**
- * Create or update synchronization records for all posts.
- *
- * @param bool $forced If true, assume that all synch. records are gone and will need to be recreated from scratch.
- * @return void
- */
- function resynch($container_type = '', $forced = false){
- global $wpdb;
- global $blclog;
-
- //Resynch is expensive in terms of DB performance. Thus we only do it once, processing
- //all post types in one go and ignoring any further resynch requests during this pageload.
- //BUG: This might be a problem if there ever is an actual need to run resynch twice or
- //more per pageload.
- if ( $this->resynch_already_done ){
- $blclog->log(sprintf('...... Skipping "%s" resyncyh since all post types were already synched.', $container_type));
- return;
- }
-
- if ( empty($this->enabled_post_types) ){
- $blclog->warn(sprintf('...... Skipping "%s" resyncyh since no post types are enabled.', $container_type));
- return;
- }
-
- $escaped_post_types = array_map(array(&$wpdb, 'escape'), $this->enabled_post_types);
- $escaped_post_statuses = array_map(array(&$wpdb, 'escape'), $this->enabled_post_statuses);
-
- if ( $forced ){
- //Create new synchronization records for all posts.
- $blclog->log('...... Creating synch records for these post types: '.implode(', ', $escaped_post_types) . ' that have one of these statuses: ' . implode(', ', $escaped_post_statuses));
- $q = "INSERT INTO {$wpdb->prefix}blc_synch(container_id, container_type, synched)
- SELECT posts.id, posts.post_type, 0
- FROM {$wpdb->posts} AS posts
- WHERE
- posts.post_status IN (%s)
- AND posts.post_type IN (%s)";
- $q = sprintf(
- $q,
- "'" . implode("', '", $escaped_post_statuses) . "'",
- "'" . implode("', '", $escaped_post_types) . "'"
- );
- $wpdb->query( $q );
- $blclog->log(sprintf('...... %d rows inserted', $wpdb->rows_affected));
- } else {
- //Delete synch records corresponding to posts that no longer exist.
- $blclog->log('...... Deleting synch records for removed posts');
- $q = "DELETE synch.*
- FROM
- {$wpdb->prefix}blc_synch AS synch LEFT JOIN {$wpdb->posts} AS posts
- ON posts.ID = synch.container_id
- WHERE
- synch.container_type IN (%s) AND posts.ID IS NULL";
- $q = sprintf(
- $q,
- "'" . implode("', '", $escaped_post_types) . "'"
- );
- $wpdb->query( $q );
- $blclog->log(sprintf('...... %d rows deleted', $wpdb->rows_affected));
-
- //Remove the 'synched' flag from all posts that have been updated
- //since the last time they were parsed/synchronized.
- $blclog->log('...... Marking changed posts as unsynched');
- $q = "UPDATE
- {$wpdb->prefix}blc_synch AS synch
- JOIN {$wpdb->posts} AS posts ON (synch.container_id = posts.ID and synch.container_type=posts.post_type)
- SET
- synched = 0
- WHERE
- synch.last_synch < posts.post_modified";
- $wpdb->query( $q );
- $blclog->log(sprintf('...... %d rows updated', $wpdb->rows_affected));
-
- //Create synch. records for posts that don't have them.
- $blclog->log('...... Creating synch records for new posts');
- $q = "INSERT INTO {$wpdb->prefix}blc_synch(container_id, container_type, synched)
- SELECT posts.id, posts.post_type, 0
- FROM
- {$wpdb->posts} AS posts LEFT JOIN {$wpdb->prefix}blc_synch AS synch
- ON (synch.container_id = posts.ID and synch.container_type=posts.post_type)
- WHERE
- posts.post_status IN (%s)
- AND posts.post_type IN (%s)
- AND synch.container_id IS NULL";
- $q = sprintf(
- $q,
- "'" . implode("', '", $escaped_post_statuses) . "'",
- "'" . implode("', '", $escaped_post_types) . "'"
- );
- $wpdb->query($q);
- $blclog->log(sprintf('...... %d rows inserted', $wpdb->rows_affected));
- }
-
- $this->resynch_already_done = true;
- }
-
- /**
- * Hook for the 'the_content' filter. Scans the current post and adds the 'broken_link'
- * CSS class to all links that are known to be broken. Currently works only on standard
- * HTML links (i.e. the '<a href=...' kind).
- *
- * @param string $content Post content
- * @return string Modified post content.
- */
- function hook_the_content($content){
- global $post, $wpdb; /** @var wpdb $wpdb */
- if ( empty($post) || !in_array($post->post_type, $this->enabled_post_types)) {
- return $content;
- }
-
- //Retrieve info about all occurences of broken links in the current post
- $q = "
- SELECT instances.raw_url
- FROM {$wpdb->prefix}blc_instances AS instances JOIN {$wpdb->prefix}blc_links AS links
- ON instances.link_id = links.link_id
- WHERE
- instances.container_type = %s
- AND instances.container_id = %d
- AND links.broken = 1
- AND parser_type = 'link'
- ";
- $q = $wpdb->prepare($q, $post->post_type, $post->ID);
- $links = $wpdb->get_results($q, ARRAY_A);
-
- //Return the content unmodified if there are no broken links in this post.
- if ( empty($links) || !is_array($links) ){
- return $content;
- }
-
- //Put the broken link URLs in an array
- $broken_link_urls = array();
- foreach($links as $link){
- $broken_link_urls[] = $link['raw_url'];
- }
-
- //Iterate over all HTML links and modify the broken ones
- if ( $parser = blcParserHelper::get_parser('link') ){
- $content = $parser->multi_edit($content, array(&$this, 'highlight_broken_link'), $broken_link_urls);
- }
-
- return $content;
- }
-
- /**
- * Analyse a link and add 'broken_link' CSS class if the link is broken.
- *
- * @see blcHtmlLink::multi_edit()
- *
- * @param array $link Associative array of link data.
- * @param array $broken_link_urls List of broken link URLs present in the current post.
- * @return array|string The modified link
- */
- function highlight_broken_link($link, $broken_link_urls){
- if ( !in_array($link['href'], $broken_link_urls) ){
- //Link not broken = return the original link tag
- return $link['#raw'];
- }
-
- //Add 'broken_link' to the 'class' attribute (unless already present).
- if ( $this->plugin_conf->options['mark_broken_links'] ){
- if ( isset($link['class']) ){
- $classes = explode(' ', $link['class']);
- if ( !in_array('broken_link', $classes) ){
- $classes[] = 'broken_link';
- $link['class'] = implode(' ', $classes);
- }
- } else {
- $link['class'] = 'broken_link';
- }
- }
-
- //Nofollow the link (unless it's already nofollow'ed)
- if ( $this->plugin_conf->options['nofollow_broken_links'] ){
- if ( isset($link['rel']) ){
- $relations = explode(' ', $link['rel']);
- if ( !in_array('nofollow', $relations) ){
- $relations[] = 'nofollow';
- $link['rel'] = implode(' ', $relations);
- }
- } else {
- $link['rel'] = 'nofollow';
- }
- }
-
- return $link;
- }
-
- /**
- * A hook for the 'wp_head' action. Outputs the user-defined broken link CSS.
- *
- * @return void
- */
- function hook_wp_head(){
- echo '<style type="text/css">',$this->plugin_conf->options['broken_link_css'],'</style>';
- }
- }
- //Start up the post overlord
- blcPostTypeOverlord::getInstance();
- /**
- * Universal container item class used for all post types.
- *
- * @package Broken Link Checker
- * @author Janis Elsts
- * @access public
- */
- class blcAnyPostContainer extends blcContainer {
- var $default_field = 'post_content';
-
- /**
- * Get action links for this post.
- *
- * @param string $container_field Ignored.
- * @return array of action link HTML.
- */
- function ui_get_action_links($container_field = ''){
- $actions = array();
-
- //Fetch the post (it should be cached already)
- $post = $this->get_wrapped_object();
- if ( !$post ){
- return $actions;
- }
-
- $post_type_object = get_post_type_object($post->post_type);
-
- //Each post type can have its own cap requirements
- if ( current_user_can( $post_type_object->cap->edit_post, $this->container_id ) ){
- $actions['edit'] = sprintf(
- '<span class="edit"><a href="%s" title="%s">%s</a>',
- $this->get_edit_url(),
- $post_type_object->labels->edit_item,
- __('Edit')
- );
-
- //Trash/Delete link
- if ( current_user_can( $post_type_object->cap->delete_post, $this->container_id ) ){
- if ( $this->can_be_trashed() ) {
- $actions['trash'] = sprintf(
- "<span class='trash'><a class='submitdelete' title='%s' href='%s'>%s</a>",
- esc_attr(__('Move this item to the Trash')),
- get_delete_post_link($this->container_id, '', false),
- __('Trash')
- );
- } else {
- $actions['delete'] = sprintf(
- "<span><a class='submitdelete' title='%s' href='%s'>%s</a>",
- esc_attr(__('Delete this item permanently')),
- get_delete_post_link($this->container_id, '', true),
- __('Delete')
- );
- }
- }
- }
-
- //View/Preview link
- $title = get_the_title($this->container_id);
- if ( in_array($post->post_status, array('pending', 'draft')) ) {
- if ( current_user_can($post_type_object->cap->edit_post, $this->container_id) ){
- $actions['view'] = sprintf(
- '<span class="view"><a href="%s" title="%s" rel="permalink">%s</a>',
- esc_url( add_query_arg( 'preview', 'true', get_permalink($this->container_id) ) ),
- esc_attr(sprintf(__('Preview “%s”'), $title)),
- __('Preview')
- );
- }
- } elseif ( 'trash' != $post->post_status ) {
- $actions['view'] = sprintf(
- '<span class="view"><a href="%s" title="%s" rel="permalink">%s</a>',
- esc_url( get_permalink($this->container_id) ),
- esc_attr(sprintf(__('View “%s”'), $title)),
- __('View')
- );
- }
-
- return $actions;
- }
-
- /**
- * Get the HTML for displaying the post title in the "Source" column.
- *
- * @param string $container_field Ignored.
- * @param string $context How to filter the output. Optional, defaults to 'display'.
- * @return string HTML
- */
- function ui_get_source($container_field = '', $context = 'display'){
- $source = '<a class="row-title" href="%s" title="%s">%s</a>';
- $source = sprintf(
- $source,
- $this->get_edit_url(),
- esc_attr(__('Edit this item')),
- get_the_title($this->container_id)
- );
-
- return $source;
- }
-
- /**
- * Get edit URL for this container. Returns the URL of the Dashboard page where the item
- * associated with this container can be edited.
- *
- * @access protected
- *
- * @return string
- */
- function get_edit_url(){
- /*
- The below is a near-exact copy of the get_post_edit_link() function.
- Unfortunately we can't just call that function because it has a hardcoded
- caps-check which fails when called from the email notification script
- executed by Cron.
- */
-
- if ( !$post = $this->get_wrapped_object() ){
- return '';
- }
-
- $context = 'display';
- $action = '&action=edit';
-
- $post_type_object = get_post_type_object( $post->post_type );
- if ( !$post_type_object ){
- return '';
- }
-
- return apply_filters( 'get_edit_post_link', admin_url( sprintf($post_type_object->_edit_link . $action, $post->ID) ), $post->ID, $context );
- }
-
- /**
- * Retrieve the post associated with this container.
- *
- * @access protected
- *
- * @param bool $ensure_consistency Set this to true to ignore the cached $wrapped_object value and retrieve an up-to-date copy of the wrapped object from the DB (or WP's internal cache).
- * @return object Post data.
- */
- function get_wrapped_object($ensure_consistency = false){
- if( $ensure_consistency || is_null($this->wrapped_object) ){
- $this->wrapped_object = get_post($this->container_id);
- }
- return $this->wrapped_object;
- }
- /**
- * Update the post associated with this container.
- *
- * @access protected
- *
- * @return bool|WP_Error True on success, an error if something went wrong.
- */
- function update_wrapped_object(){
- if ( is_null($this->wrapped_object) ){
- return new WP_Error(
- 'no_wrapped_object',
- __('Nothing to update', 'broken-link-checker')
- );
- }
-
- $id = wp_update_post($this->wrapped_object);
- if ( $id != 0 ){
- return true;
- } else {
- return new WP_Error(
- 'update_failed',
- sprintf(__('Updating post %d failed', 'broken-link-checker'), $this->container_id)
- );
- }
- }
-
- /**
- * Get the base URL of the container. For posts, the post permalink is used
- * as the base URL when normalizing relative links.
- *
- * @return string
- */
- function base_url(){
- return get_permalink($this->container_id);
- }
-
- /**
- * Delete or trash the post corresponding to this container.
- * Will always move to trash instead of deleting if trash is enabled.
- *
- * @return bool|WP_error
- */
- function delete_wrapped_object(){
- //Note that we don't need to delete the synch record and instances here -
- //wp_delete_post()/wp_trash_post() will run the post_delete/trash hook,
- //which will be caught by blcPostContainerManager, which will in turn
- //delete anything that needs to be deleted.
- if ( EMPTY_TRASH_DAYS ){
- return $this->trash_wrapped_object();
- } else {
- if ( wp_delete_post($this->container_id, true) ){
- return true;
- } else {
- return new WP_Error(
- 'delete_failed',
- sprintf(
- __('Failed to delete post "%s" (%d)', 'broken-link-checker'),
- get_the_title($this->container_id),
- $this->container_id
- )
- );
- };
- }
- }
-
- /**
- * Move the post corresponding to this container to the Trash.
- *
- * @return bool|WP_Error
- */
- function trash_wrapped_object(){
- if ( !EMPTY_TRASH_DAYS ){
- return new WP_Error(
- 'trash_disabled',
- sprintf(
- __('Can\'t move post "%s" (%d) to the trash because the trash feature is disabled', 'broken-link-checker'),
- get_the_title($this->container_id),
- $this->container_id
- )
- );
- }
-
- $post = get_post($this->container_id);
- if ( $post->post_status == 'trash' ){
- //Prevent conflicts between post and custom field containers trying to trash the same post.
- //BUG: Post and custom field containers shouldn't wrap the same object
- return true;
- }
-
- if ( wp_trash_post($this->container_id) ){
- return true;
- } else {
- return new WP_Error(
- 'trash_failed',
- sprintf(
- __('Failed to move post "%s" (%d) to the trash', 'broken-link-checker'),
- get_the_title($this->container_id),
- $this->container_id
- )
- );
- };
- }
-
- /**
- * Check if the current user can delete/trash this post.
- *
- * @return bool
- */
- function current_user_can_delete(){
- $post = $this->get_wrapped_object();
- $post_type_object = get_post_type_object($post->post_type);
- return current_user_can( $post_type_object->cap->delete_post, $this->container_id );
- }
-
- function can_be_trashed(){
- return defined('EMPTY_TRASH_DAYS') && EMPTY_TRASH_DAYS;
- }
- }
- /**
- * Universal manager usable for most post types.
- *
- * @package Broken Link Checker
- * @access public
- */
- class blcAnyPostContainerManager extends blcContainerManager {
- var $container_class_name = 'blcAnyPostContainer';
- var $fields = array('post_content' => 'html');
-
- function init(){
- parent::init();
-
- //Notify the overlord that the post/container type that this instance is
- //responsible for is enabled.
- $overlord = blcPostTypeOverlord::getInstance();
- $overlord->post_type_enabled($this->container_type);
- }
-
- /**
- * Instantiate multiple containers of the container type managed by this class.
- *
- * @param array $containers Array of assoc. arrays containing container data.
- * @param string $purpose An optional code indicating how the retrieved containers will be used.
- * @param bool $load_wrapped_objects Preload wrapped objects regardless of purpose.
- *
- * @return array of blcPostContainer indexed by "container_type|container_id"
- */
- function get_containers($containers, $purpose = '', $load_wrapped_objects = false){
- $containers = $this->make_containers($containers);
-
- //Preload post data if it is likely to be useful later
- $preload = $load_wrapped_objects || in_array($purpose, array(BLC_FOR_DISPLAY, BLC_FOR_PARSING));
- if ( $preload ){
- $post_ids = array();
- foreach($containers as $container){
- $post_ids[] = $container->container_id;
- }
-
- $args = array('include' => implode(',', $post_ids));
- $posts = get_posts($args);
-
- foreach($posts as $post){
- $key = $this->container_type . '|' . $post->ID;
- if ( isset($containers[$key]) ){
- $containers[$key]->wrapped_object = $post;
- }
- }
- }
-
- return $containers;
- }
-
- /**
- * Create or update synchronization records for all posts.
- *
- * @param bool $forced If true, assume that all synch. records are gone and will need to be recreated from scratch.
- * @return void
- */
- function resynch($forced = false){
- $overlord = blcPostTypeOverlord::getInstance();
- $overlord->resynch($this->container_type, $forced);
- }
-
- /**
- * Get the message to display after $n posts have been deleted.
- *
- * @param int $n Number of deleted posts.
- * @return string A delete confirmation message, e.g. "5 posts were moved deleted"
- */
- function ui_bulk_delete_message($n){
- //Since the "Trash" feature has been introduced, calling wp_delete_post
- //doesn't actually delete the post (unless you set force_delete to True),
- //just moves it to the trash. So we pick the message accordingly.
- //(If possible, BLC *always* moves to trash instead of deleting permanently.)
- if ( function_exists('wp_trash_post') && EMPTY_TRASH_DAYS ){
- return blcAnyPostContainerManager::ui_bulk_trash_message($n);
- } else {
- $post_type_object = get_post_type_object($this->container_type);
- $type_name = '';
-
- if ( $this->container_type == 'post' || is_null($post_type_object) ){
- $delete_msg = _n("%d post deleted.", "%d posts deleted.", $n, 'broken-link-checker');
- } elseif ( $this->container_type == 'page' ){
- $delete_msg = _n("%d page deleted.", "%d pages deleted.", $n, 'broken-link-checker');
- } else {
- $delete_msg = _n('%d "%s" deleted.', '%d "%s" deleted.', $n, 'broken-link-checker');
- $type_name = ($n == 1 ? $post_type_object->labels->singular_name : $post_type_object->labels->name);
- }
- return sprintf($delete_msg, $n, $type_name);
- }
- }
-
-
- /**
- * Get the message to display after $n posts have been trashed.
- *
- * @param int $n Number of deleted posts.
- * @return string A confirmation message, e.g. "5 posts were moved to trash"
- */
- function ui_bulk_trash_message($n){
- $post_type_object = get_post_type_object($this->container_type);
- $type_name = '';
-
- if ( $this->container_type == 'post' || is_null($post_type_object) ){
- $delete_msg = _n("%d post moved to the Trash.", "%d posts moved to the Trash.", $n, 'broken-link-checker');
- } elseif ( $this->container_type == 'page' ){
- $delete_msg = _n("%d page moved to the Trash.", "%d pages moved to the Trash.", $n, 'broken-link-checker');
- } else {
- $delete_msg = _n('%d "%s" moved to the Trash.', '%d "%s" moved to the Trash.', $n, 'broken-link-checker');
- $type_name = ($n == 1 ? $post_type_object->labels->singular_name : $post_type_object->labels->name);
- }
- return sprintf($delete_msg, $n, $type_name);
- }
- }
- ?>