View file File name : bookmark.php Content :<?php /** * WordPress Bookmark Administration API * * @package WordPress * @subpackage Administration */ /** * Adds a link using values provided in $_POST. * * @since 2.0.0 * * @return int|WP_Error Value 0 or WP_Error on failure. The link ID on success. */ function add_link() { return edit_link(); } /** * Updates or inserts a link using values provided in $_POST. * * @since 2.0.0 * * @param int $link_id Optional. ID of the link to edit. Default 0. * @return int|WP_Error Value 0 or WP_Error on failure. The link ID on success. */ function edit_link( $link_id = 0 ) { if ( ! current_user_can( 'manage_links' ) ) { wp_die( '<h1>' . __( 'You need a higher level of permission.' ) . '</h1>' . '<p>' . __( 'Sorry, you are not allowed to edit the links for this site.' ) . '</p>', 403 ); } $_POST['link_url'] = esc_url( $_POST['link_url'] ); $_POST['link_name'] = esc_html( $_POST['link_name'] ); $_POST['link_image'] = esc_html( $_POST['link_image'] ); $_POST['link_rss'] = esc_url( $_POST['link_rss'] ); if ( ! isset( $_POST['link_visible'] ) || 'N' !== $_POST['link_visible'] ) { $_POST['link_visible'] = 'Y'; } if ( ! empty( $link_id ) ) { $_POST['link_id'] = $link_id; return wp_update_link( $_POST ); } else { return wp_insert_link( $_POST ); } } /** * Retrieves the default link for editing. * * @since 2.0.0 * * @return stdClass Default link object. */ function get_default_link_to_edit() { $link = new stdClass(); if ( isset( $_GET['linkurl'] ) ) { $link->link_url = esc_url( wp_unslash( $_GET['linkurl'] ) ); } else { $link->link_url = ''; } if ( isset( $_GET['name'] ) ) { $link->link_name = esc_attr( wp_unslash( $_GET['name'] ) ); } else { $link->link_name = ''; } $link->link_visible = 'Y'; return $link; } /** * Deletes a specified link from the database. * * @since 2.0.0 * * @global wpdb $wpdb WordPress database abstraction object. * * @param int $link_id ID of the link to delete. * @return true Always true. */ function wp_delete_link( $link_id ) { global $wpdb; /** * Fires before a link is deleted. * * @since 2.0.0 * * @param int $link_id ID of the link to delete. */ do_action( 'delete_link', $link_id ); wp_delete_object_term_relationships( $link_id, 'link_category' ); $wpdb->delete( $wpdb->links, array( 'link_id' => $link_id ) ); /** * Fires after a link has been deleted. * * @since 2.2.0 * * @param int $link_id ID of the deleted link. */ do_action( 'deleted_link', $link_id ); clean_bookmark_cache( $link_id ); return true; } /** * Retrieves the link category IDs associated with the link specified. * * @since 2.1.0 * * @param int $link_id Link ID to look up. * @return int[] The IDs of the requested link's categories. */ function wp_get_link_cats( $link_id = 0 ) { $cats = wp_get_object_terms( $link_id, 'link_category', array( 'fields' => 'ids' ) ); return array_unique( $cats ); } /** * Retrieves link data based on its ID. * * @since 2.0.0 * * @param int|stdClass $link Link ID or object to retrieve. * @return object Link object for editing. */ function get_link_to_edit( $link ) { return get_bookmark( $link, OBJECT, 'edit' ); } /** * Inserts a link into the database, or updates an existing link. * * Runs all the necessary sanitizing, provides default values if arguments are missing, * and finally saves the link. * * @since 2.0.0 * * @global wpdb $wpdb WordPress database abstraction object. * * @param array $linkdata { * Elements that make up the link to insert. * * @type int $link_id Optional. The ID of the existing link if updating. * @type string $link_url The URL the link points to. * @type string $link_name The title of the link. * @type string $link_image Optional. A URL of an image. * @type string $link_target Optional. The target element for the anchor tag. * @type string $link_description Optional. A short description of the link. * @type string $link_visible Optional. 'Y' means visible, anything else means not. * @type int $link_owner Optional. A user ID. * @type int $link_rating Optional. A rating for the link. * @type string $link_rel Optional. A relationship of the link to you. * @type string $link_notes Optional. An extended description of or notes on the link. * @type string $link_rss Optional. A URL of an associated RSS feed. * @type int $link_category Optional. The term ID of the link category. * If empty, uses default link category. * } * @param bool $wp_error Optional. Whether to return a WP_Error object on failure. Default false. * @return int|WP_Error Value 0 or WP_Error on failure. The link ID on success. */ function wp_insert_link( $linkdata, $wp_error = false ) { global $wpdb; $defaults = array( 'link_id' => 0, 'link_name' => '', 'link_url' => '', 'link_rating' => 0, ); $parsed_args = wp_parse_args( $linkdata, $defaults ); $parsed_args = wp_unslash( sanitize_bookmark( $parsed_args, 'db' ) ); $link_id = $parsed_args['link_id']; $link_name = $parsed_args['link_name']; $link_url = $parsed_args['link_url']; $update = false; if ( ! empty( $link_id ) ) { $update = true; } if ( '' === trim( $link_name ) ) { if ( '' !== trim( $link_url ) ) { $link_name = $link_url; } else { return 0; } } if ( '' === trim( $link_url ) ) { return 0; } $link_rating = ( ! empty( $parsed_args['link_rating'] ) ) ? $parsed_args['link_rating'] : 0; $link_image = ( ! empty( $parsed_args['link_image'] ) ) ? $parsed_args['link_image'] : ''; $link_target = ( ! empty( $parsed_args['link_target'] ) ) ? $parsed_args['link_target'] : ''; $link_visible = ( ! empty( $parsed_args['link_visible'] ) ) ? $parsed_args['link_visible'] : 'Y'; $link_owner = ( ! empty( $parsed_args['link_owner'] ) ) ? $parsed_args['link_owner'] : get_current_user_id(); $link_notes = ( ! empty( $parsed_args['link_notes'] ) ) ? $parsed_args['link_notes'] : ''; $link_description = ( ! empty( $parsed_args['link_description'] ) ) ? $parsed_args['link_description'] : ''; $link_rss = ( ! empty( $parsed_args['link_rss'] ) ) ? $parsed_args['link_rss'] : ''; $link_rel = ( ! empty( $parsed_args['link_rel'] ) ) ? $parsed_args['link_rel'] : ''; $link_category = ( ! empty( $parsed_args['link_category'] ) ) ? $parsed_args['link_category'] : array(); // Make sure we set a valid category. if ( ! is_array( $link_category ) || 0 === count( $link_category ) ) { $link_category = array( get_option( 'default_link_category' ) ); } if ( $update ) { if ( false === $wpdb->update( $wpdb->links, compact( 'link_url', 'link_name', 'link_image', 'link_target', 'link_description', 'link_visible', 'link_owner', 'link_rating', 'link_rel', 'link_notes', 'link_rss' ), compact( 'link_id' ) ) ) { if ( $wp_error ) { return new WP_Error( 'db_update_error', __( 'Could not update link in the database.' ), $wpdb->last_error ); } else { return 0; } } } else { if ( false === $wpdb->insert( $wpdb->links, compact( 'link_url', 'link_name', 'link_image', 'link_target', 'link_description', 'link_visible', 'link_owner', 'link_rating', 'link_rel', 'link_notes', 'link_rss' ) ) ) { if ( $wp_error ) { return new WP_Error( 'db_insert_error', __( 'Could not insert link into the database.' ), $wpdb->last_error ); } else { return 0; } } $link_id = (int) $wpdb->insert_id; } wp_set_link_cats( $link_id, $link_category ); if ( $update ) { /** * Fires after a link was updated in the database. * * @since 2.0.0 * * @param int $link_id ID of the link that was updated. */ do_action( 'edit_link', $link_id ); } else { /** * Fires after a link was added to the database. * * @since 2.0.0 * * @param int $link_id ID of the link that was added. */ do_action( 'add_link', $link_id ); } clean_bookmark_cache( $link_id ); return $link_id; } /** * Updates link with the specified link categories. * * @since 2.1.0 * * @param int $link_id ID of the link to update. * @param int[] $link_categories Array of link category IDs to add the link to. */ function wp_set_link_cats( $link_id = 0, $link_categories = array() ) { // If $link_categories isn't already an array, make it one: if ( ! is_array( $link_categories ) || 0 === count( $link_categories ) ) { $link_categories = array( get_option( 'default_link_category' ) ); } $link_categories = array_map( 'intval', $link_categories ); $link_categories = array_unique( $link_categories ); wp_set_object_terms( $link_id, $link_categories, 'link_category' ); clean_bookmark_cache( $link_id ); } /** * Updates a link in the database. * * @since 2.0.0 * * @param array $linkdata Link data to update. See wp_insert_link() for accepted arguments. * @return int|WP_Error Value 0 or WP_Error on failure. The updated link ID on success. */ function wp_update_link( $linkdata ) { $link_id = (int) $linkdata['link_id']; $link = get_bookmark( $link_id, ARRAY_A ); // Escape data pulled from DB. $link = wp_slash( $link ); // Passed link category list overwrites existing category list if not empty. if ( isset( $linkdata['link_category'] ) && is_array( $linkdata['link_category'] ) && count( $linkdata['link_category'] ) > 0 ) { $link_cats = $linkdata['link_category']; } else { $link_cats = $link['link_category']; } // Merge old and new fields with new fields overwriting old ones. $linkdata = array_merge( $link, $linkdata ); $linkdata['link_category'] = $link_cats; return wp_insert_link( $linkdata ); } /** * Outputs the 'disabled' message for the WordPress Link Manager. * * @since 3.5.0 * @access private * * @global string $pagenow The filename of the current screen. */ function wp_link_manager_disabled_message() { global $pagenow; if ( ! in_array( $pagenow, array( 'link-manager.php', 'link-add.php', 'link.php' ), true ) ) { return; } add_filter( 'pre_option_link_manager_enabled', '__return_true', 100 ); $really_can_manage_links = current_user_can( 'manage_links' ); remove_filter( 'pre_option_link_manager_enabled', '__return_true', 100 ); if ( $really_can_manage_links ) { $plugins = get_plugins(); if ( empty( $plugins['link-manager/link-manager.php'] ) ) { if ( current_user_can( 'install_plugins' ) ) { $install_url = wp_nonce_url( self_admin_url( 'update.php?action=install-plugin&plugin=link-manager' ), 'install-plugin_link-manager' ); wp_die( sprintf( /* translators: %s: A link to install the Link Manager plugin. */ __( 'If you are looking to use the link manager, please install the <a href="%s">Link Manager plugin</a>.' ), esc_url( $install_url ) ) ); } } elseif ( is_plugin_inactive( 'link-manager/link-manager.php' ) ) { if ( current_user_can( 'activate_plugins' ) ) { $activate_url = wp_nonce_url( self_admin_url( 'plugins.php?action=activate&plugin=link-manager/link-manager.php' ), 'activate-plugin_link-manager/link-manager.php' ); wp_die( sprintf( /* translators: %s: A link to activate the Link Manager plugin. */ __( 'Please activate the <a href="%s">Link Manager plugin</a> to use the link manager.' ), esc_url( $activate_url ) ) ); } } } wp_die( __( 'Sorry, you are not allowed to edit the links for this site.' ) ); }