WordPress/wp-admin/includes/bookmark.php

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<?php
/**
* WordPress Bookmark Administration API
*
* @package WordPress
* @subpackage Administration
*/
/**
* Add a link to 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();
}
/**
* Update or insert a link using values provided in $_POST.
*
* @since 2.0.0
*
* @param int $link_id Optional. ID of the link to edit.
* @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( __( 'Cheatin&#8217; uh?' ) );
$_POST['link_url'] = esc_html( $_POST['link_url'] );
$_POST['link_url'] = esc_url($_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 );
}
}
/**
* Retrieve the default link for editing.
*
* @since 2.0.0
*
* @return object Default link
*/
function get_default_link_to_edit() {
$link = new stdClass;
if ( isset( $_GET['linkurl'] ) )
$link->link_url = esc_url( $_GET['linkurl'] );
else
$link->link_url = '';
if ( isset( $_GET['name'] ) )
$link->link_name = esc_attr( $_GET['name'] );
else
$link->link_name = '';
$link->link_visible = 'Y';
return $link;
}
/**
* Delete link specified from database
*
* @since 2.0.0
*
* @param int $link_id ID of the link to delete
* @return bool True
*/
function wp_delete_link( $link_id ) {
global $wpdb;
do_action( 'delete_link', $link_id );
wp_delete_object_term_relationships( $link_id, 'link_category' );
$wpdb->delete( $wpdb->links, array( 'link_id' => $link_id ) );
do_action( 'deleted_link', $link_id );
clean_bookmark_cache( $link_id );
return true;
}
/**
* Retrieves the link categories associated with the link specified.
*
* @since 2.1.0
*
* @param int $link_id Link ID to look up
* @return array 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 );
}
/**
* Retrieve link data based on ID.
*
* @since 2.0.0
*
* @param int $link_id ID of link to retrieve
* @return object Link for editing
*/
function get_link_to_edit( $link_id ) {
return get_bookmark( $link_id, OBJECT, 'edit' );
}
/**
* This function inserts/updates links into/in the database.
*
* @since 2.0.0
*
* @param array $linkdata Elements that make up the link to insert.
* @param bool $wp_error Optional. If true return WP_Error object on failure.
* @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 );
$linkdata = wp_parse_args( $linkdata, $defaults );
$linkdata = sanitize_bookmark( $linkdata, 'db' );
extract( stripslashes_deep( $linkdata ), EXTR_SKIP );
$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;
if ( empty( $link_rating ) )
$link_rating = 0;
if ( empty( $link_image ) )
$link_image = '';
if ( empty( $link_target ) )
$link_target = '';
if ( empty( $link_visible ) )
$link_visible = 'Y';
if ( empty( $link_owner ) )
$link_owner = get_current_user_id();
if ( empty( $link_notes ) )
$link_notes = '';
if ( empty( $link_description ) )
$link_description = '';
if ( empty( $link_rss ) )
$link_rss = '';
if ( empty( $link_rel ) )
$link_rel = '';
// Make sure we set a valid category
if ( ! isset( $link_category ) || 0 == count( $link_category ) || !is_array( $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_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 )
do_action( 'edit_link', $link_id );
else
do_action( 'add_link', $link_id );
clean_bookmark_cache( $link_id );
return $link_id;
}
/**
* Update link with the specified link categories.
*
* @since 2.1.0
*
* @param int $link_id ID of link to update
* @param array $link_categories Array of categories 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 );
}
/**
* Update a link in the database.
*
* @since 2.0.0
*
* @param array $linkdata Link data to update.
* @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 = add_magic_quotes( $link );
// Passed link category list overwrites existing category list if not empty.
if ( isset( $linkdata['link_category'] ) && is_array( $linkdata['link_category'] )
&& 0 != count( $linkdata['link_category'] ) )
$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 );
}