X-Git-Url: https://scripts.mit.edu/gitweb/autoinstalls/wordpress.git/blobdiff_plain/699231ae09f7057a4d0000cdf32e50a3df6a04ca..5aa86a9053fb0fa15846bb60aac2fb8fdfff524a:/wp-includes/meta.php?ds=sidebyside diff --git a/wp-includes/meta.php b/wp-includes/meta.php index 67ea8611..a318bbe2 100644 --- a/wp-includes/meta.php +++ b/wp-includes/meta.php @@ -26,7 +26,7 @@ * @param bool $unique Optional, default is false. Whether the specified metadata key should be * unique for the object. If true, and the object already has a value for the specified * metadata key, no change will be made - * @return bool True on successful update, false on failure. + * @return bool The meta ID on successful update, false on failure. */ function add_metadata($meta_type, $object_id, $meta_key, $meta_value, $unique = false) { if ( !$meta_type || !$meta_key ) @@ -44,6 +44,12 @@ function add_metadata($meta_type, $object_id, $meta_key, $meta_value, $unique = // expected_slashed ($meta_key) $meta_key = stripslashes($meta_key); + $meta_value = stripslashes_deep($meta_value); + $meta_value = sanitize_meta( $meta_key, $meta_value, $meta_type ); + + $check = apply_filters( "add_{$meta_type}_metadata", null, $object_id, $meta_key, $meta_value, $unique ); + if ( null !== $check ) + return $check; if ( $unique && $wpdb->get_var( $wpdb->prepare( "SELECT COUNT(*) FROM $table WHERE meta_key = %s AND $column = %d", @@ -51,22 +57,26 @@ function add_metadata($meta_type, $object_id, $meta_key, $meta_value, $unique = return false; $_meta_value = $meta_value; - $meta_value = maybe_serialize( stripslashes_deep($meta_value) ); + $meta_value = maybe_serialize( $meta_value ); + + do_action( "add_{$meta_type}_meta", $object_id, $meta_key, $_meta_value ); - $wpdb->insert( $table, array( + $result = $wpdb->insert( $table, array( $column => $object_id, 'meta_key' => $meta_key, 'meta_value' => $meta_value ) ); + if ( ! $result ) + return false; + + $mid = (int) $wpdb->insert_id; + wp_cache_delete($object_id, $meta_type . '_meta'); - // users cache stores usermeta that must be cleared. - if ( 'user' == $meta_type ) - clean_user_cache($object_id); - do_action( "added_{$meta_type}_meta", $wpdb->insert_id, $object_id, $meta_key, $_meta_value ); + do_action( "added_{$meta_type}_meta", $mid, $object_id, $meta_key, $_meta_value ); - return true; + return $mid; } /** @@ -105,21 +115,28 @@ function update_metadata($meta_type, $object_id, $meta_key, $meta_value, $prev_v // expected_slashed ($meta_key) $meta_key = stripslashes($meta_key); + $passed_value = $meta_value; + $meta_value = stripslashes_deep($meta_value); + $meta_value = sanitize_meta( $meta_key, $meta_value, $meta_type ); + + $check = apply_filters( "update_{$meta_type}_metadata", null, $object_id, $meta_key, $meta_value, $prev_value ); + if ( null !== $check ) + return (bool) $check; if ( ! $meta_id = $wpdb->get_var( $wpdb->prepare( "SELECT $id_column FROM $table WHERE meta_key = %s AND $column = %d", $meta_key, $object_id ) ) ) - return add_metadata($meta_type, $object_id, $meta_key, $meta_value); + return add_metadata($meta_type, $object_id, $meta_key, $passed_value); // Compare existing value to new value if no prev value given and the key exists only once. if ( empty($prev_value) ) { $old_value = get_metadata($meta_type, $object_id, $meta_key); if ( count($old_value) == 1 ) { - if ( $old_value[0] == $meta_value ) + if ( $old_value[0] === $meta_value ) return false; } } $_meta_value = $meta_value; - $meta_value = maybe_serialize( stripslashes_deep($meta_value) ); + $meta_value = maybe_serialize( $meta_value ); $data = compact( 'meta_value' ); $where = array( $column => $object_id, 'meta_key' => $meta_key ); @@ -131,14 +148,18 @@ function update_metadata($meta_type, $object_id, $meta_key, $meta_value, $prev_v do_action( "update_{$meta_type}_meta", $meta_id, $object_id, $meta_key, $_meta_value ); + if ( 'post' == $meta_type ) + do_action( 'update_postmeta', $meta_id, $object_id, $meta_key, $meta_value ); + $wpdb->update( $table, $data, $where ); + wp_cache_delete($object_id, $meta_type . '_meta'); - // users cache stores usermeta that must be cleared. - if ( 'user' == $meta_type ) - clean_user_cache($object_id); do_action( "updated_{$meta_type}_meta", $meta_id, $object_id, $meta_key, $_meta_value ); + if ( 'post' == $meta_type ) + do_action( 'updated_postmeta', $meta_id, $object_id, $meta_key, $meta_value ); + return true; } @@ -176,7 +197,14 @@ function delete_metadata($meta_type, $object_id, $meta_key, $meta_value = '', $d $id_column = 'user' == $meta_type ? 'umeta_id' : 'meta_id'; // expected_slashed ($meta_key) $meta_key = stripslashes($meta_key); - $meta_value = maybe_serialize( stripslashes_deep($meta_value) ); + $meta_value = stripslashes_deep($meta_value); + + $check = apply_filters( "delete_{$meta_type}_metadata", null, $object_id, $meta_key, $meta_value, $delete_all ); + if ( null !== $check ) + return (bool) $check; + + $_meta_value = $meta_value; + $meta_value = maybe_serialize( $meta_value ); $query = $wpdb->prepare( "SELECT $id_column FROM $table WHERE meta_key = %s", $meta_key ); @@ -190,6 +218,14 @@ function delete_metadata($meta_type, $object_id, $meta_key, $meta_value = '', $d if ( !count( $meta_ids ) ) return false; + if ( $delete_all ) + $object_ids = $wpdb->get_col( $wpdb->prepare( "SELECT $type_column FROM $table WHERE meta_key = %s", $meta_key ) ); + + do_action( "delete_{$meta_type}_meta", $meta_ids, $object_id, $meta_key, $_meta_value ); + + if ( 'post' == $meta_type ) + do_action( 'delete_postmeta', $meta_ids ); + $query = "DELETE FROM $table WHERE $id_column IN( " . implode( ',', $meta_ids ) . " )"; $count = $wpdb->query($query); @@ -197,12 +233,18 @@ function delete_metadata($meta_type, $object_id, $meta_key, $meta_value = '', $d if ( !$count ) return false; - wp_cache_delete($object_id, $meta_type . '_meta'); - // users cache stores usermeta that must be cleared. - if ( 'user' == $meta_type ) - clean_user_cache($object_id); + if ( $delete_all ) { + foreach ( (array) $object_ids as $o_id ) { + wp_cache_delete($o_id, $meta_type . '_meta'); + } + } else { + wp_cache_delete($object_id, $meta_type . '_meta'); + } + + do_action( "deleted_{$meta_type}_meta", $meta_ids, $object_id, $meta_key, $_meta_value ); - do_action( "deleted_{$meta_type}_meta", $meta_ids, $object_id, $meta_key, $meta_value ); + if ( 'post' == $meta_type ) + do_action( 'deleted_postmeta', $meta_ids ); return true; } @@ -227,14 +269,22 @@ function get_metadata($meta_type, $object_id, $meta_key = '', $single = false) { if ( !$object_id = absint($object_id) ) return false; + $check = apply_filters( "get_{$meta_type}_metadata", null, $object_id, $meta_key, $single ); + if ( null !== $check ) { + if ( $single && is_array( $check ) ) + return $check[0]; + else + return $check; + } + $meta_cache = wp_cache_get($object_id, $meta_type . '_meta'); if ( !$meta_cache ) { - update_meta_cache($meta_type, $object_id); - $meta_cache = wp_cache_get($object_id, $meta_type . '_meta'); + $meta_cache = update_meta_cache( $meta_type, array( $object_id ) ); + $meta_cache = $meta_cache[$object_id]; } - if ( ! $meta_key ) + if ( !$meta_key ) return $meta_cache; if ( isset($meta_cache[$meta_key]) ) { @@ -250,6 +300,213 @@ function get_metadata($meta_type, $object_id, $meta_key = '', $single = false) { return array(); } +/** + * Determine if a meta key is set for a given object + * + * @since 3.3.0 + * + * @param string $meta_type Type of object metadata is for (e.g., comment, post, or user) + * @param int $object_id ID of the object metadata is for + * @param string $meta_key Metadata key. + * @return boolean true of the key is set, false if not. + */ +function metadata_exists( $meta_type, $object_id, $meta_key ) { + if ( ! $meta_type ) + return false; + + if ( ! $object_id = absint( $object_id ) ) + return false; + + $check = apply_filters( "get_{$meta_type}_metadata", null, $object_id, $meta_key, true ); + if ( null !== $check ) + return true; + + $meta_cache = wp_cache_get( $object_id, $meta_type . '_meta' ); + + if ( !$meta_cache ) { + $meta_cache = update_meta_cache( $meta_type, array( $object_id ) ); + $meta_cache = $meta_cache[$object_id]; + } + + if ( isset( $meta_cache[ $meta_key ] ) ) + return true; + + return false; +} + +/** + * Get meta data by meta ID + * + * @since 3.3.0 + * + * @param string $meta_type Type of object metadata is for (e.g., comment, post, or user) + * @param int $meta_id ID for a specific meta row + * @return object Meta object or false. + */ +function get_metadata_by_mid( $meta_type, $meta_id ) { + global $wpdb; + + if ( ! $meta_type ) + return false; + + if ( !$meta_id = absint( $meta_id ) ) + return false; + + if ( ! $table = _get_meta_table($meta_type) ) + return false; + + $id_column = ( 'user' == $meta_type ) ? 'umeta_id' : 'meta_id'; + + $meta = $wpdb->get_row( $wpdb->prepare( "SELECT * FROM $table WHERE $id_column = %d", $meta_id ) ); + + if ( empty( $meta ) ) + return false; + + if ( isset( $meta->meta_value ) ) + $meta->meta_value = maybe_unserialize( $meta->meta_value ); + + return $meta; +} + +/** + * Update meta data by meta ID + * + * @since 3.3.0 + * + * @uses get_metadata_by_mid() Calls get_metadata_by_mid() to fetch the meta key, value + * and object_id of the given meta_id. + * + * @param string $meta_type Type of object metadata is for (e.g., comment, post, or user) + * @param int $meta_id ID for a specific meta row + * @param string $meta_value Metadata value + * @param string $meta_key Optional, you can provide a meta key to update it + * @return bool True on successful update, false on failure. + */ +function update_metadata_by_mid( $meta_type, $meta_id, $meta_value, $meta_key = false ) { + global $wpdb; + + // Make sure everything is valid. + if ( ! $meta_type ) + return false; + + if ( ! $meta_id = absint( $meta_id ) ) + return false; + + if ( ! $table = _get_meta_table( $meta_type ) ) + return false; + + $column = esc_sql($meta_type . '_id'); + $id_column = 'user' == $meta_type ? 'umeta_id' : 'meta_id'; + + // Fetch the meta and go on if it's found. + if ( $meta = get_metadata_by_mid( $meta_type, $meta_id ) ) { + $original_key = $meta->meta_key; + $original_value = $meta->meta_value; + $object_id = $meta->{$column}; + + // If a new meta_key (last parameter) was specified, change the meta key, + // otherwise use the original key in the update statement. + if ( false === $meta_key ) { + $meta_key = $original_key; + } elseif ( ! is_string( $meta_key ) ) { + return false; + } + + // Sanitize the meta + $_meta_value = $meta_value; + $meta_value = sanitize_meta( $meta_key, $meta_value, $meta_type ); + $meta_value = maybe_serialize( $meta_value ); + + // Format the data query arguments. + $data = array( + 'meta_key' => $meta_key, + 'meta_value' => $meta_value + ); + + // Format the where query arguments. + $where = array(); + $where[$id_column] = $meta_id; + + do_action( "update_{$meta_type}_meta", $meta_id, $object_id, $meta_key, $_meta_value ); + + if ( 'post' == $meta_type ) + do_action( 'update_postmeta', $meta_id, $object_id, $meta_key, $meta_value ); + + // Run the update query, all fields in $data are %s, $where is a %d. + $result = (bool) $wpdb->update( $table, $data, $where, '%s', '%d' ); + + // Clear the caches. + wp_cache_delete($object_id, $meta_type . '_meta'); + + do_action( "updated_{$meta_type}_meta", $meta_id, $object_id, $meta_key, $_meta_value ); + + if ( 'post' == $meta_type ) + do_action( 'updated_postmeta', $meta_id, $object_id, $meta_key, $meta_value ); + + return $result; + } + + // And if the meta was not found. + return false; +} + +/** + * Delete meta data by meta ID + * + * @since 3.3.0 + * + * @uses get_metadata_by_mid() Calls get_metadata_by_mid() to fetch the meta key, value + * and object_id of the given meta_id. + * + * @param string $meta_type Type of object metadata is for (e.g., comment, post, or user) + * @param int $meta_id ID for a specific meta row + * @return bool True on successful delete, false on failure. + */ +function delete_metadata_by_mid( $meta_type, $meta_id ) { + global $wpdb; + + // Make sure everything is valid. + if ( ! $meta_type ) + return false; + + if ( ! $meta_id = absint( $meta_id ) ) + return false; + + if ( ! $table = _get_meta_table( $meta_type ) ) + return false; + + // object and id columns + $column = esc_sql($meta_type . '_id'); + $id_column = 'user' == $meta_type ? 'umeta_id' : 'meta_id'; + + // Fetch the meta and go on if it's found. + if ( $meta = get_metadata_by_mid( $meta_type, $meta_id ) ) { + $object_id = $meta->{$column}; + + do_action( "delete_{$meta_type}_meta", (array) $meta_id, $object_id, $meta->meta_key, $meta->meta_value ); + + if ( 'post' == $meta_type ) + do_action( 'delete_postmeta', $meta_id ); + + // Run the query, will return true if deleted, false otherwise + $result = (bool) $wpdb->query( $wpdb->prepare( "DELETE FROM $table WHERE $id_column = %d LIMIT 1;", $meta_id ) ); + + // Clear the caches. + wp_cache_delete($object_id, $meta_type . '_meta'); + + do_action( "deleted_{$meta_type}_meta", (array) $meta_id, $object_id, $meta->meta_key, $meta->meta_value ); + + if ( 'post' == $meta_type ) + do_action( 'deleted_postmeta', $meta_id ); + + return $result; + + } + + // Meta id was not found. + return false; +} + /** * Update the metadata cache for the specified objects. * @@ -280,17 +537,20 @@ function update_meta_cache($meta_type, $object_ids) { $cache_key = $meta_type . '_meta'; $ids = array(); + $cache = array(); foreach ( $object_ids as $id ) { - if ( false === wp_cache_get($id, $cache_key) ) + $cached_object = wp_cache_get( $id, $cache_key ); + if ( false === $cached_object ) $ids[] = $id; + else + $cache[$id] = $cached_object; } if ( empty( $ids ) ) - return false; + return $cache; // Get meta info $id_list = join(',', $ids); - $cache = array(); $meta_list = $wpdb->get_results( $wpdb->prepare("SELECT $column, meta_key, meta_value FROM $table WHERE $column IN ($id_list)", $meta_type), ARRAY_A ); @@ -314,21 +574,227 @@ function update_meta_cache($meta_type, $object_ids) { foreach ( $ids as $id ) { if ( ! isset($cache[$id]) ) $cache[$id] = array(); + wp_cache_add( $id, $cache[$id], $cache_key ); } - foreach ( array_keys($cache) as $object) - wp_cache_set($object, $cache[$object], $cache_key); - return $cache; } +/** + * Given a meta query, generates SQL clauses to be appended to a main query + * + * @since 3.2.0 + * + * @see WP_Meta_Query + * + * @param array $meta_query A meta query + * @param string $type Type of meta + * @param string $primary_table + * @param string $primary_id_column + * @param object $context (optional) The main query object + * @return array( 'join' => $join_sql, 'where' => $where_sql ) + */ +function get_meta_sql( $meta_query, $type, $primary_table, $primary_id_column, $context = null ) { + $meta_query_obj = new WP_Meta_Query( $meta_query ); + return $meta_query_obj->get_sql( $type, $primary_table, $primary_id_column, $context ); +} + +/** + * Container class for a multiple metadata query + * + * @since 3.2.0 + */ +class WP_Meta_Query { + /** + * List of metadata queries. A single query is an associative array: + * - 'key' string The meta key + * - 'value' string|array The meta value + * - 'compare' (optional) string How to compare the key to the value. + * Possible values: '=', '!=', '>', '>=', '<', '<=', 'LIKE', 'NOT LIKE', 'IN', 'NOT IN', 'BETWEEN', 'NOT BETWEEN'. + * Default: '=' + * - 'type' string (optional) The type of the value. + * Possible values: 'NUMERIC', 'BINARY', 'CHAR', 'DATE', 'DATETIME', 'DECIMAL', 'SIGNED', 'TIME', 'UNSIGNED'. + * Default: 'CHAR' + * + * @since 3.2.0 + * @access public + * @var array + */ + public $queries = array(); + + /** + * The relation between the queries. Can be one of 'AND' or 'OR'. + * + * @since 3.2.0 + * @access public + * @var string + */ + public $relation; + + /** + * Constructor + * + * @param array $meta_query (optional) A meta query + */ + function __construct( $meta_query = false ) { + if ( !$meta_query ) + return; + + if ( isset( $meta_query['relation'] ) && strtoupper( $meta_query['relation'] ) == 'OR' ) { + $this->relation = 'OR'; + } else { + $this->relation = 'AND'; + } + + $this->queries = array(); + + foreach ( $meta_query as $key => $query ) { + if ( ! is_array( $query ) ) + continue; + + $this->queries[] = $query; + } + } + + /** + * Constructs a meta query based on 'meta_*' query vars + * + * @since 3.2.0 + * @access public + * + * @param array $qv The query variables + */ + function parse_query_vars( $qv ) { + $meta_query = array(); + + // Simple query needs to be first for orderby=meta_value to work correctly + foreach ( array( 'key', 'compare', 'type' ) as $key ) { + if ( !empty( $qv[ "meta_$key" ] ) ) + $meta_query[0][ $key ] = $qv[ "meta_$key" ]; + } + + // WP_Query sets 'meta_value' = '' by default + if ( isset( $qv[ 'meta_value' ] ) && '' !== $qv[ 'meta_value' ] ) + $meta_query[0]['value'] = $qv[ 'meta_value' ]; + + if ( !empty( $qv['meta_query'] ) && is_array( $qv['meta_query'] ) ) { + $meta_query = array_merge( $meta_query, $qv['meta_query'] ); + } + + $this->__construct( $meta_query ); + } + + /** + * Generates SQL clauses to be appended to a main query. + * + * @since 3.2.0 + * @access public + * + * @param string $type Type of meta + * @param string $primary_table + * @param string $primary_id_column + * @param object $context (optional) The main query object + * @return array( 'join' => $join_sql, 'where' => $where_sql ) + */ + function get_sql( $type, $primary_table, $primary_id_column, $context = null ) { + global $wpdb; + + if ( ! $meta_table = _get_meta_table( $type ) ) + return false; + + $meta_id_column = esc_sql( $type . '_id' ); + + $join = array(); + $where = array(); + + foreach ( $this->queries as $k => $q ) { + $meta_key = isset( $q['key'] ) ? trim( $q['key'] ) : ''; + $meta_type = isset( $q['type'] ) ? strtoupper( $q['type'] ) : 'CHAR'; + + if ( 'NUMERIC' == $meta_type ) + $meta_type = 'SIGNED'; + elseif ( ! in_array( $meta_type, array( 'BINARY', 'CHAR', 'DATE', 'DATETIME', 'DECIMAL', 'SIGNED', 'TIME', 'UNSIGNED' ) ) ) + $meta_type = 'CHAR'; + + $i = count( $join ); + $alias = $i ? 'mt' . $i : $meta_table; + + // Set JOIN + $join[$i] = "INNER JOIN $meta_table"; + $join[$i] .= $i ? " AS $alias" : ''; + $join[$i] .= " ON ($primary_table.$primary_id_column = $alias.$meta_id_column)"; + + $where[$k] = ''; + if ( !empty( $meta_key ) ) + $where[$k] = $wpdb->prepare( "$alias.meta_key = %s", $meta_key ); + + if ( !isset( $q['value'] ) ) { + if ( empty( $where[$k] ) ) + unset( $join[$i] ); + continue; + } + + $meta_value = $q['value']; + + $meta_compare = is_array( $meta_value ) ? 'IN' : '='; + if ( isset( $q['compare'] ) ) + $meta_compare = strtoupper( $q['compare'] ); + + if ( ! in_array( $meta_compare, array( '=', '!=', '>', '>=', '<', '<=', 'LIKE', 'NOT LIKE', 'IN', 'NOT IN', 'BETWEEN', 'NOT BETWEEN' ) ) ) + $meta_compare = '='; + + if ( in_array( $meta_compare, array( 'IN', 'NOT IN', 'BETWEEN', 'NOT BETWEEN' ) ) ) { + if ( ! is_array( $meta_value ) ) + $meta_value = preg_split( '/[,\s]+/', $meta_value ); + + if ( empty( $meta_value ) ) { + unset( $join[$i] ); + continue; + } + } else { + $meta_value = trim( $meta_value ); + } + + if ( 'IN' == substr( $meta_compare, -2) ) { + $meta_compare_string = '(' . substr( str_repeat( ',%s', count( $meta_value ) ), 1 ) . ')'; + } elseif ( 'BETWEEN' == substr( $meta_compare, -7) ) { + $meta_value = array_slice( $meta_value, 0, 2 ); + $meta_compare_string = '%s AND %s'; + } elseif ( 'LIKE' == substr( $meta_compare, -4 ) ) { + $meta_value = '%' . like_escape( $meta_value ) . '%'; + $meta_compare_string = '%s'; + } else { + $meta_compare_string = '%s'; + } + + if ( ! empty( $where[$k] ) ) + $where[$k] .= ' AND '; + + $where[$k] = ' (' . $where[$k] . $wpdb->prepare( "CAST($alias.meta_value AS {$meta_type}) {$meta_compare} {$meta_compare_string})", $meta_value ); + } + + $where = array_filter( $where ); + + if ( empty( $where ) ) + $where = ''; + else + $where = ' AND (' . implode( "\n{$this->relation} ", $where ) . ' )'; + + $join = implode( "\n", $join ); + if ( ! empty( $join ) ) + $join = ' ' . $join; + + return apply_filters_ref_array( 'get_meta_sql', array( compact( 'join', 'where' ), $this->queries, $type, $primary_table, $primary_id_column, $context ) ); + } +} + /** * Retrieve the name of the metadata table for the specified object type. * * @since 2.9.0 * @uses $wpdb WordPress database object for queries. * - * @param string $meta_type Type of object to get metadata table for (e.g., comment, post, or user) + * @param string $type Type of object to get metadata table for (e.g., comment, post, or user) * @return mixed Metadata table name, or false if no metadata table exists */ function _get_meta_table($type) { @@ -341,4 +807,59 @@ function _get_meta_table($type) { return $wpdb->$table_name; } + +/** + * Determine whether a meta key is protected + * + * @since 3.1.3 + * + * @param string $meta_key Meta key + * @return bool True if the key is protected, false otherwise. + */ +function is_protected_meta( $meta_key, $meta_type = null ) { + $protected = ( '_' == $meta_key[0] ); + + return apply_filters( 'is_protected_meta', $protected, $meta_key, $meta_type ); +} + +/** + * Sanitize meta value + * + * @since 3.1.3 + * + * @param string $meta_key Meta key + * @param mixed $meta_value Meta value to sanitize + * @param string $meta_type Type of meta + * @return mixed Sanitized $meta_value + */ +function sanitize_meta( $meta_key, $meta_value, $meta_type ) { + return apply_filters( "sanitize_{$meta_type}_meta_{$meta_key}", $meta_value, $meta_key, $meta_type ); +} + +/** + * Register meta key + * + * @since 3.3.0 + * + * @param string $meta_type Type of meta + * @param string $meta_key Meta key + * @param string|array $sanitize_callback A function or method to call when sanitizing the value of $meta_key. + * @param string|array $auth_callback Optional. A function or method to call when performing edit_post_meta, add_post_meta, and delete_post_meta capability checks. + * @param array $args Arguments + */ +function register_meta( $meta_type, $meta_key, $sanitize_callback, $auth_callback = null ) { + if ( is_callable( $sanitize_callback ) ) + add_filter( "sanitize_{$meta_type}_meta_{$meta_key}", $sanitize_callback, 10, 3 ); + + if ( empty( $auth_callback ) ) { + if ( is_protected_meta( $meta_key, $meta_type ) ) + $auth_callback = '__return_false'; + else + $auth_callback = '__return_true'; + } + + if ( is_callable( $auth_callback ) ) + add_filter( "auth_{$meta_type}_meta_{$meta_key}", $auth_callback, 10, 6 ); +} + ?>