JezK
Edit File: bookmark.php
<?php /** * Link/Bookmark API * * @package WordPress * @subpackage Bookmark */ /** * Retrieves bookmark data. * * @since 2.1.0 * * @global object $link Current link object. * @global wpdb $wpdb WordPress database abstraction object. * * @param int|stdClass $bookmark * @param string $output Optional. The required return type. One of OBJECT, ARRAY_A, or ARRAY_N, which * correspond to an stdClass object, an associative array, or a numeric array, * respectively. Default OBJECT. * @param string $filter Optional. How to sanitize bookmark fields. Default 'raw'. * @return array|object|null Type returned depends on $output value. */ function get_bookmark( $bookmark, $output = OBJECT, $filter = 'raw' ) { global $wpdb; if ( empty( $bookmark ) ) { if ( isset( $GLOBALS['link'] ) ) { $_bookmark = & $GLOBALS['link']; } else { $_bookmark = null; } } elseif ( is_object( $bookmark ) ) { wp_cache_add( $bookmark->link_id, $bookmark, 'bookmark' ); $_bookmark = $bookmark; } else { if ( isset( $GLOBALS['link'] ) && ( $GLOBALS['link']->link_id === $bookmark ) ) { $_bookmark = & $GLOBALS['link']; } else { $_bookmark = wp_cache_get( $bookmark, 'bookmark' ); if ( ! $_bookmark ) { $_bookmark = $wpdb->get_row( $wpdb->prepare( "SELECT * FROM $wpdb->links WHERE link_id = %d LIMIT 1", $bookmark ) ); if ( $_bookmark ) { $_bookmark->link_category = array_unique( wp_get_object_terms( $_bookmark->link_id, 'link_category', array( 'fields' => 'ids' ) ) ); wp_cache_add( $_bookmark->link_id, $_bookmark, 'bookmark' ); } } } } if ( ! $_bookmark ) { return $_bookmark; } $_bookmark = sanitize_bookmark( $_bookmark, $filter ); if ( OBJECT === $output ) { return $_bookmark; } elseif ( ARRAY_A === $output ) { return get_object_vars( $_bookmark ); } elseif ( ARRAY_N === $output ) { return array_values( get_object_vars( $_bookmark ) ); } else { return $_bookmark; } } /** * Retrieves single bookmark data item or field. * * @since 2.3.0 * * @param string $field The name of the data field to return. * @param int $bookmark The bookmark ID to get field. * @param string $context Optional. The context of how the field will be used. Default 'display'. * @return string|WP_Error */ function get_bookmark_field( $field, $bookmark, $context = 'display' ) { $bookmark = (int) $bookmark; $bookmark = get_bookmark( $bookmark ); if ( is_wp_error( $bookmark ) ) { return $bookmark; } if ( ! is_object( $bookmark ) ) { return ''; } if ( ! isset( $bookmark->$field ) ) { return ''; } return sanitize_bookmark_field( $field, $bookmark->$field, $bookmark->link_id, $context ); } /** * Retrieves the list of bookmarks. * * Attempts to retrieve from the cache first based on MD5 hash of arguments. If * that fails, then the query will be built from the arguments and executed. The * results will be stored to the cache. * * @since 2.1.0 * * @global wpdb $wpdb WordPress database abstraction object. * * @param string|array $args { * Optional. String or array of arguments to retrieve bookmarks. * * @type string $orderby How to order the links by. Accepts 'id', 'link_id', 'name', 'link_name', * 'url', 'link_url', 'visible', 'link_visible', 'rating', 'link_rating', * 'owner', 'link_owner', 'updated', 'link_updated', 'notes', 'link_notes', * 'description', 'link_description', 'length' and 'rand'. * When `$orderby` is 'length', orders by the character length of * 'link_name'. Default 'name'. * @type string $order Whether to order bookmarks in ascending or descending order. * Accepts 'ASC' (ascending) or 'DESC' (descending). Default 'ASC'. * @type int $limit Amount of bookmarks to display. Accepts any positive number or * -1 for all. Default -1. * @type string $category Comma-separated list of category IDs to include links from. * Default empty. * @type string $category_name Category to retrieve links for by name. Default empty. * @type int|bool $hide_invisible Whether to show or hide links marked as 'invisible'. Accepts * 1|true or 0|false. Default 1|true. * @type int|bool $show_updated Whether to display the time the bookmark was last updated. * Accepts 1|true or 0|false. Default 0|false. * @type string $include Comma-separated list of bookmark IDs to include. Default empty. * @type string $exclude Comma-separated list of bookmark IDs to exclude. Default empty. * @type string $search Search terms. Will be SQL-formatted with wildcards before and after * and searched in 'link_url', 'link_name' and 'link_description'. * Default empty. * } * @return object[] List of bookmark row objects. */ function get_bookmarks( $args = '' ) { global $wpdb; $defaults = array( 'orderby' => 'name', 'order' => 'ASC', 'limit' => -1, 'category' => '', 'category_name' => '', 'hide_invisible' => 1, 'show_updated' => 0, 'include' => '', 'exclude' => '', 'search' => '', ); $parsed_args = wp_parse_args( $args, $defaults ); $key = md5( serialize( $parsed_args ) ); $cache = wp_cache_get( 'get_bookmarks', 'bookmark' ); if ( 'rand' !== $parsed_args['orderby'] && $cache ) { if ( is_array( $cache ) && isset( $cache[ $key ] ) ) { $bookmarks = $cache[ $key ]; /** * Filters the returned list of bookmarks. * * The first time the hook is evaluated in this file, it returns the cached * bookmarks list. The second evaluation returns a cached bookmarks list if the * link category is passed but does not exist. The third evaluation returns * the full cached results. * * @since 2.1.0 * * @see get_bookmarks() * * @param array $bookmarks List of the cached bookmarks. * @param array $parsed_args An array of bookmark query arguments. */ return apply_filters( 'get_bookmarks', $bookmarks, $parsed_args ); } } if ( ! is_array( $cache ) ) { $cache = array(); } $inclusions = ''; if ( ! empty( $parsed_args['include'] ) ) { $parsed_args['exclude'] = ''; // Ignore exclude, category, and category_name params if using include. $parsed_args['category'] = ''; $parsed_args['category_name'] = ''; $inclinks = wp_parse_id_list( $parsed_args['include'] ); if ( count( $inclinks ) ) { foreach ( $inclinks as $inclink ) { if ( empty( $inclusions ) ) { $inclusions = ' AND ( link_id = ' . $inclink . ' '; } else { $inclusions .= ' OR link_id = ' . $inclink . ' '; } } } } if ( ! empty( $inclusions ) ) { $inclusions .= ')'; } $exclusions = ''; if ( ! empty( $parsed_args['exclude'] ) ) { $exlinks = wp_parse_id_list( $parsed_args['exclude'] ); if ( count( $exlinks ) ) { foreach ( $exlinks as $exlink ) { if ( empty( $exclusions ) ) { $exclusions = ' AND ( link_id <> ' . $exlink . ' '; } else { $exclusions .= ' AND link_id <> ' . $exlink . ' '; } } } } if ( ! empty( $exclusions ) ) { $exclusions .= ')'; } if ( ! empty( $parsed_args['category_name'] ) ) { $parsed_args['category'] = get_term_by( 'name', $parsed_args['category_name'], 'link_category' ); if ( $parsed_args['category'] ) { $parsed_args['category'] = $parsed_args['category']->term_id; } else { $cache[ $key ] = array(); wp_cache_set( 'get_bookmarks', $cache, 'bookmark' ); /** This filter is documented in wp-includes/bookmark.php */ return apply_filters( 'get_bookmarks', array(), $parsed_args ); } } $search = ''; if ( ! empty( $parsed_args['search'] ) ) { $like = '%' . $wpdb->esc_like( $parsed_args['search'] ) . '%'; $search = $wpdb->prepare( ' AND ( (link_url LIKE %s) OR (link_name LIKE %s) OR (link_description LIKE %s) ) ', $like, $like, $like ); } $category_query = ''; $join = ''; if ( ! empty( $parsed_args['category'] ) ) { $incategories = wp_parse_id_list( $parsed_args['category'] ); if ( count( $incategories ) ) { foreach ( $incategories as $incat ) { if ( empty( $category_query ) ) { $category_query = ' AND ( tt.term_id = ' . $incat . ' '; } else { $category_query .= ' OR tt.term_id = ' . $incat . ' '; } } } } if ( ! empty( $category_query ) ) { $category_query .= ") AND taxonomy = 'link_category'"; $join = " INNER JOIN $wpdb->term_relationships AS tr ON ($wpdb->links.link_id = tr.object_id) INNER JOIN $wpdb->term_taxonomy as tt ON tt.term_taxonomy_id = tr.term_taxonomy_id"; } if ( $parsed_args['show_updated'] ) { $recently_updated_test = ', IF (DATE_ADD(link_updated, INTERVAL 120 MINUTE) >= NOW(), 1,0) as recently_updated '; } else { $recently_updated_test = ''; } $get_updated = ( $parsed_args['show_updated'] ) ? ', UNIX_TIMESTAMP(link_updated) AS link_updated_f ' : ''; $orderby = strtolower( $parsed_args['orderby'] ); $length = ''; switch ( $orderby ) { case 'length': $length = ', CHAR_LENGTH(link_name) AS length'; break; case 'rand': $orderby = 'rand()'; break; case 'link_id': $orderby = "$wpdb->links.link_id"; break; default: $orderparams = array(); $keys = array( 'link_id', 'link_name', 'link_url', 'link_visible', 'link_rating', 'link_owner', 'link_updated', 'link_notes', 'link_description' ); foreach ( explode( ',', $orderby ) as $ordparam ) { $ordparam = trim( $ordparam ); if ( in_array( 'link_' . $ordparam, $keys, true ) ) { $orderparams[] = 'link_' . $ordparam; } elseif ( in_array( $ordparam, $keys, true ) ) { $orderparams[] = $ordparam; } } $orderby = implode( ',', $orderparams ); } if ( empty( $orderby ) ) { $orderby = 'link_name'; } $order = strtoupper( $parsed_args['order'] ); if ( '' !== $order && ! in_array( $order, array( 'ASC', 'DESC' ), true ) ) { $order = 'ASC'; } $visible = ''; if ( $parsed_args['hide_invisible'] ) { $visible = "AND link_visible = 'Y'"; } $query = "SELECT * $length $recently_updated_test $get_updated FROM $wpdb->links $join WHERE 1=1 $visible $category_query"; $query .= " $exclusions $inclusions $search"; $query .= " ORDER BY $orderby $order"; if ( -1 !== $parsed_args['limit'] ) { $query .= ' LIMIT ' . absint( $parsed_args['limit'] ); } $results = $wpdb->get_results( $query ); if ( 'rand()' !== $orderby ) { $cache[ $key ] = $results; wp_cache_set( 'get_bookmarks', $cache, 'bookmark' ); } /** This filter is documented in wp-includes/bookmark.php */ return apply_filters( 'get_bookmarks', $results, $parsed_args ); } /** * Sanitizes all bookmark fields. * * @since 2.3.0 * * @param stdClass|array $bookmark Bookmark row. * @param string $context Optional. How to filter the fields. Default 'display'. * @return stdClass|array Same type as $bookmark but with fields sanitized. */ function sanitize_bookmark( $bookmark, $context = 'display' ) { $fields = array( 'link_id', 'link_url', 'link_name', 'link_image', 'link_target', 'link_category', 'link_description', 'link_visible', 'link_owner', 'link_rating', 'link_updated', 'link_rel', 'link_notes', 'link_rss', ); if ( is_object( $bookmark ) ) { $do_object = true; $link_id = $bookmark->link_id; } else { $do_object = false; $link_id = $bookmark['link_id']; } foreach ( $fields as $field ) { if ( $do_object ) { if ( isset( $bookmark->$field ) ) { $bookmark->$field = sanitize_bookmark_field( $field, $bookmark->$field, $link_id, $context ); } } else { if ( isset( $bookmark[ $field ] ) ) { $bookmark[ $field ] = sanitize_bookmark_field( $field, $bookmark[ $field ], $link_id, $context ); } } } return $bookmark; } /** * Sanitizes a bookmark field. * * Sanitizes the bookmark fields based on what the field name is. If the field * has a strict value set, then it will be tested for that, else a more generic * filtering is applied. After the more strict filter is applied, if the `$context` * is 'raw' then the value is immediately return. * * Hooks exist for the more generic cases. With the 'edit' context, the {@see 'edit_$field'} * filter will be called and passed the `$value` and `$bookmark_id` respectively. * * With the 'db' context, the {@see 'pre_$field'} filter is called and passed the value. * The 'display' context is the final context and has the `$field` has the filter name * and is passed the `$value`, `$bookmark_id`, and `$context`, respectively. * * @since 2.3.0 * * @param string $field The bookmark field. * @param mixed $value The bookmark field value. * @param int $bookmark_id Bookmark ID. * @param string $context How to filter the field value. Accepts 'raw', 'edit', 'db', * 'display', 'attribute', or 'js'. Default 'display'. * @return mixed The filtered value. */ function sanitize_bookmark_field( $field, $value, $bookmark_id, $context ) { $int_fields = array( 'link_id', 'link_rating' ); if ( in_array( $field, $int_fields, true ) ) { $value = (int) $value; } switch ( $field ) { case 'link_category': // array( ints ) $value = array_map( 'absint', (array) $value ); /* * We return here so that the categories aren't filtered. * The 'link_category' filter is for the name of a link category, not an array of a link's link categories. */ return $value; case 'link_visible': // bool stored as Y|N $value = preg_replace( '/[^YNyn]/', '', $value ); break; case 'link_target': // "enum" $targets = array( '_top', '_blank' ); if ( ! in_array( $value, $targets, true ) ) { $value = ''; } break; } if ( 'raw' === $context ) { return $value; } if ( 'edit' === $context ) { /** This filter is documented in wp-includes/post.php */ $value = apply_filters( "edit_{$field}", $value, $bookmark_id ); if ( 'link_notes' === $field ) { $value = esc_html( $value ); // textarea_escaped } else { $value = esc_attr( $value ); } } elseif ( 'db' === $context ) { /** This filter is documented in wp-includes/post.php */ $value = apply_filters( "pre_{$field}", $value ); } else { /** This filter is documented in wp-includes/post.php */ $value = apply_filters( "{$field}", $value, $bookmark_id, $context ); if ( 'attribute' === $context ) { $value = esc_attr( $value ); } elseif ( 'js' === $context ) { $value = esc_js( $value ); } } // Restore the type for integer fields after esc_attr(). if ( in_array( $field, $int_fields, true ) ) { $value = (int) $value; } return $value; } /** * Deletes the bookmark cache. * * @since 2.7.0 * * @param int $bookmark_id Bookmark ID. */ function clean_bookmark_cache( $bookmark_id ) { wp_cache_delete( $bookmark_id, 'bookmark' ); wp_cache_delete( 'get_bookmarks', 'bookmark' ); clean_object_term_cache( $bookmark_id, 'link' ); }