get_error_codes() == array('empty_username', 'empty_password') ) {
$user = new WP_Error('', '');
}
return $user;
}
wp_set_auth_cookie($user->ID, $credentials['remember'], $secure_cookie);
do_action('wp_login', $user->user_login, $user);
return $user;
}
/**
* Authenticate the user using the username and password.
*/
add_filter('authenticate', 'wp_authenticate_username_password', 20, 3);
function wp_authenticate_username_password($user, $username, $password) {
if ( is_a($user, 'WP_User') ) { return $user; }
if ( empty($username) || empty($password) ) {
$error = new WP_Error();
if ( empty($username) )
$error->add('empty_username', __('ERROR: The username field is empty.'));
if ( empty($password) )
$error->add('empty_password', __('ERROR: The password field is empty.'));
return $error;
}
$userdata = get_user_by('login', $username);
if ( !$userdata )
return new WP_Error('invalid_username', sprintf(__('ERROR: Invalid username. Lost your password?'), site_url('wp-login.php?action=lostpassword', 'login')));
if ( is_multisite() ) {
// Is user marked as spam?
if ( 1 == $userdata->spam)
return new WP_Error('invalid_username', __('ERROR: Your account has been marked as a spammer.'));
// Is a user's blog marked as spam?
if ( !is_super_admin( $userdata->ID ) && isset($userdata->primary_blog) ) {
$details = get_blog_details( $userdata->primary_blog );
if ( is_object( $details ) && $details->spam == 1 )
return new WP_Error('blog_suspended', __('Site Suspended.'));
}
}
$userdata = apply_filters('wp_authenticate_user', $userdata, $password);
if ( is_wp_error($userdata) )
return $userdata;
if ( !wp_check_password($password, $userdata->user_pass, $userdata->ID) )
return new WP_Error( 'incorrect_password', sprintf( __( 'ERROR: The password you entered for the username %1$s is incorrect. Lost your password?' ),
$username, site_url( 'wp-login.php?action=lostpassword', 'login' ) ) );
$user = new WP_User($userdata->ID);
return $user;
}
/**
* Authenticate the user using the WordPress auth cookie.
*/
function wp_authenticate_cookie($user, $username, $password) {
if ( is_a($user, 'WP_User') ) { return $user; }
if ( empty($username) && empty($password) ) {
$user_id = wp_validate_auth_cookie();
if ( $user_id )
return new WP_User($user_id);
global $auth_secure_cookie;
if ( $auth_secure_cookie )
$auth_cookie = SECURE_AUTH_COOKIE;
else
$auth_cookie = AUTH_COOKIE;
if ( !empty($_COOKIE[$auth_cookie]) )
return new WP_Error('expired_session', __('Please log in again.'));
// If the cookie is not set, be silent.
}
return $user;
}
/**
* Number of posts user has written.
*
* @since 3.0.0
* @uses $wpdb WordPress database object for queries.
*
* @param int $userid User ID.
* @return int Amount of posts user has written.
*/
function count_user_posts($userid) {
global $wpdb;
$where = get_posts_by_author_sql('post', TRUE, $userid);
$count = $wpdb->get_var( "SELECT COUNT(*) FROM $wpdb->posts $where" );
return apply_filters('get_usernumposts', $count, $userid);
}
/**
* Number of posts written by a list of users.
*
* @since 3.0.0
* @param array $user_ids Array of user IDs.
* @param string|array $post_type Optional. Post type to check. Defaults to post.
* @return array Amount of posts each user has written.
*/
function count_many_users_posts($users, $post_type = 'post' ) {
global $wpdb;
$count = array();
if ( empty( $users ) || ! is_array( $users ) )
return $count;
$userlist = implode( ',', array_map( 'absint', $users ) );
$where = get_posts_by_author_sql( $post_type );
$result = $wpdb->get_results( "SELECT post_author, COUNT(*) FROM $wpdb->posts $where AND post_author IN ($userlist) GROUP BY post_author", ARRAY_N );
foreach ( $result as $row ) {
$count[ $row[0] ] = $row[1];
}
foreach ( $users as $id ) {
if ( ! isset( $count[ $id ] ) )
$count[ $id ] = 0;
}
return $count;
}
/**
* Check that the user login name and password is correct.
*
* @since 0.71
* @todo xmlrpc only. Maybe move to xmlrpc.php.
*
* @param string $user_login User name.
* @param string $user_pass User password.
* @return bool False if does not authenticate, true if username and password authenticates.
*/
function user_pass_ok($user_login, $user_pass) {
$user = wp_authenticate($user_login, $user_pass);
if ( is_wp_error($user) )
return false;
return true;
}
//
// User option functions
//
/**
* Get the current user's ID
*
* @since MU
*
* @uses wp_get_current_user
*
* @return int The current user's ID
*/
function get_current_user_id() {
$user = wp_get_current_user();
return ( isset( $user->ID ) ? (int) $user->ID : 0 );
}
/**
* Retrieve user option that can be either per Site or per Network.
*
* If the user ID is not given, then the current user will be used instead. If
* the user ID is given, then the user data will be retrieved. The filter for
* the result, will also pass the original option name and finally the user data
* object as the third parameter.
*
* The option will first check for the per site name and then the per Network name.
*
* @since 2.0.0
* @uses $wpdb WordPress database object for queries.
* @uses apply_filters() Calls 'get_user_option_$option' hook with result,
* option parameter, and user data object.
*
* @param string $option User option name.
* @param int $user Optional. User ID.
* @param bool $deprecated Use get_option() to check for an option in the options table.
* @return mixed
*/
function get_user_option( $option, $user = 0, $deprecated = '' ) {
global $wpdb;
if ( !empty( $deprecated ) )
_deprecated_argument( __FUNCTION__, '3.0' );
if ( empty( $user ) )
$user = wp_get_current_user();
else
$user = new WP_User( $user );
if ( ! isset( $user->ID ) )
return false;
if ( $user->has_prop( $wpdb->prefix . $option ) ) // Blog specific
$result = $user->get( $wpdb->prefix . $option );
elseif ( $user->has_prop( $option ) ) // User specific and cross-blog
$result = $user->get( $option );
else
$result = false;
return apply_filters("get_user_option_{$option}", $result, $option, $user);
}
/**
* Update user option with global blog capability.
*
* User options are just like user metadata except that they have support for
* global blog options. If the 'global' parameter is false, which it is by default
* it will prepend the WordPress table prefix to the option name.
*
* Deletes the user option if $newvalue is empty.
*
* @since 2.0.0
* @uses $wpdb WordPress database object for queries
*
* @param int $user_id User ID
* @param string $option_name User option name.
* @param mixed $newvalue User option value.
* @param bool $global Optional. Whether option name is global or blog specific. Default false (blog specific).
* @return unknown
*/
function update_user_option( $user_id, $option_name, $newvalue, $global = false ) {
global $wpdb;
if ( !$global )
$option_name = $wpdb->prefix . $option_name;
// For backward compatibility. See differences between update_user_meta() and deprecated update_usermeta().
// http://core.trac.wordpress.org/ticket/13088
if ( is_null( $newvalue ) || is_scalar( $newvalue ) && empty( $newvalue ) )
return delete_user_meta( $user_id, $option_name );
return update_user_meta( $user_id, $option_name, $newvalue );
}
/**
* Delete user option with global blog capability.
*
* User options are just like user metadata except that they have support for
* global blog options. If the 'global' parameter is false, which it is by default
* it will prepend the WordPress table prefix to the option name.
*
* @since 3.0.0
* @uses $wpdb WordPress database object for queries
*
* @param int $user_id User ID
* @param string $option_name User option name.
* @param bool $global Optional. Whether option name is global or blog specific. Default false (blog specific).
* @return unknown
*/
function delete_user_option( $user_id, $option_name, $global = false ) {
global $wpdb;
if ( !$global )
$option_name = $wpdb->prefix . $option_name;
return delete_user_meta( $user_id, $option_name );
}
/**
* WordPress User Query class.
*
* @since 3.1.0
*/
class WP_User_Query {
/**
* List of found user ids
*
* @since 3.1.0
* @access private
* @var array
*/
var $results;
/**
* Total number of found users for the current query
*
* @since 3.1.0
* @access private
* @var int
*/
var $total_users = 0;
// SQL clauses
var $query_fields;
var $query_from;
var $query_where;
var $query_orderby;
var $query_limit;
/**
* PHP5 constructor
*
* @since 3.1.0
*
* @param string|array $args The query variables
* @return WP_User_Query
*/
function __construct( $query = null ) {
if ( !empty( $query ) ) {
$this->query_vars = wp_parse_args( $query, array(
'blog_id' => $GLOBALS['blog_id'],
'role' => '',
'meta_key' => '',
'meta_value' => '',
'meta_compare' => '',
'include' => array(),
'exclude' => array(),
'search' => '',
'orderby' => 'login',
'order' => 'ASC',
'offset' => '',
'number' => '',
'count_total' => true,
'fields' => 'all',
'who' => ''
) );
$this->prepare_query();
$this->query();
}
}
/**
* Prepare the query variables
*
* @since 3.1.0
* @access private
*/
function prepare_query() {
global $wpdb;
$qv = &$this->query_vars;
if ( is_array( $qv['fields'] ) ) {
$qv['fields'] = array_unique( $qv['fields'] );
$this->query_fields = array();
foreach ( $qv['fields'] as $field )
$this->query_fields[] = $wpdb->users . '.' . esc_sql( $field );
$this->query_fields = implode( ',', $this->query_fields );
} elseif ( 'all' == $qv['fields'] ) {
$this->query_fields = "$wpdb->users.*";
} else {
$this->query_fields = "$wpdb->users.ID";
}
if ( $this->query_vars['count_total'] )
$this->query_fields = 'SQL_CALC_FOUND_ROWS ' . $this->query_fields;
$this->query_from = "FROM $wpdb->users";
$this->query_where = "WHERE 1=1";
// sorting
if ( in_array( $qv['orderby'], array('nicename', 'email', 'url', 'registered') ) ) {
$orderby = 'user_' . $qv['orderby'];
} elseif ( in_array( $qv['orderby'], array('user_nicename', 'user_email', 'user_url', 'user_registered') ) ) {
$orderby = $qv['orderby'];
} elseif ( 'name' == $qv['orderby'] || 'display_name' == $qv['orderby'] ) {
$orderby = 'display_name';
} elseif ( 'post_count' == $qv['orderby'] ) {
// todo: avoid the JOIN
$where = get_posts_by_author_sql('post');
$this->query_from .= " LEFT OUTER JOIN (
SELECT post_author, COUNT(*) as post_count
FROM $wpdb->posts
$where
GROUP BY post_author
) p ON ({$wpdb->users}.ID = p.post_author)
";
$orderby = 'post_count';
} elseif ( 'ID' == $qv['orderby'] || 'id' == $qv['orderby'] ) {
$orderby = 'ID';
} else {
$orderby = 'user_login';
}
$qv['order'] = strtoupper( $qv['order'] );
if ( 'ASC' == $qv['order'] )
$order = 'ASC';
else
$order = 'DESC';
$this->query_orderby = "ORDER BY $orderby $order";
// limit
if ( $qv['number'] ) {
if ( $qv['offset'] )
$this->query_limit = $wpdb->prepare("LIMIT %d, %d", $qv['offset'], $qv['number']);
else
$this->query_limit = $wpdb->prepare("LIMIT %d", $qv['number']);
}
$search = trim( $qv['search'] );
if ( $search ) {
$leading_wild = ( ltrim($search, '*') != $search );
$trailing_wild = ( rtrim($search, '*') != $search );
if ( $leading_wild && $trailing_wild )
$wild = 'both';
elseif ( $leading_wild )
$wild = 'leading';
elseif ( $trailing_wild )
$wild = 'trailing';
else
$wild = false;
if ( $wild )
$search = trim($search, '*');
if ( false !== strpos( $search, '@') )
$search_columns = array('user_email');
elseif ( is_numeric($search) )
$search_columns = array('user_login', 'ID');
elseif ( preg_match('|^https?://|', $search) )
$search_columns = array('user_url');
else
$search_columns = array('user_login', 'user_nicename');
$this->query_where .= $this->get_search_sql( $search, $search_columns, $wild );
}
$blog_id = absint( $qv['blog_id'] );
if ( 'authors' == $qv['who'] && $blog_id ) {
$qv['meta_key'] = $wpdb->get_blog_prefix( $blog_id ) . 'user_level';
$qv['meta_value'] = 0;
$qv['meta_compare'] = '!=';
$qv['blog_id'] = $blog_id = 0; // Prevent extra meta query
}
$role = trim( $qv['role'] );
if ( $blog_id && ( $role || is_multisite() ) ) {
$cap_meta_query = array();
$cap_meta_query['key'] = $wpdb->get_blog_prefix( $blog_id ) . 'capabilities';
if ( $role ) {
$cap_meta_query['value'] = '"' . $role . '"';
$cap_meta_query['compare'] = 'like';
}
$qv['meta_query'][] = $cap_meta_query;
}
$meta_query = new WP_Meta_Query();
$meta_query->parse_query_vars( $qv );
if ( !empty( $meta_query->queries ) ) {
$clauses = $meta_query->get_sql( 'user', $wpdb->users, 'ID', $this );
$this->query_from .= $clauses['join'];
$this->query_where .= $clauses['where'];
if ( 'OR' == $meta_query->relation )
$this->query_fields = 'DISTINCT ' . $this->query_fields;
}
if ( !empty( $qv['include'] ) ) {
$ids = implode( ',', wp_parse_id_list( $qv['include'] ) );
$this->query_where .= " AND $wpdb->users.ID IN ($ids)";
} elseif ( !empty($qv['exclude']) ) {
$ids = implode( ',', wp_parse_id_list( $qv['exclude'] ) );
$this->query_where .= " AND $wpdb->users.ID NOT IN ($ids)";
}
do_action_ref_array( 'pre_user_query', array( &$this ) );
}
/**
* Execute the query, with the current variables
*
* @since 3.1.0
* @access private
*/
function query() {
global $wpdb;
if ( is_array( $this->query_vars['fields'] ) || 'all' == $this->query_vars['fields'] ) {
$this->results = $wpdb->get_results("SELECT $this->query_fields $this->query_from $this->query_where $this->query_orderby $this->query_limit");
} else {
$this->results = $wpdb->get_col("SELECT $this->query_fields $this->query_from $this->query_where $this->query_orderby $this->query_limit");
}
if ( $this->query_vars['count_total'] )
$this->total_users = $wpdb->get_var( apply_filters( 'found_users_query', 'SELECT FOUND_ROWS()' ) );
if ( !$this->results )
return;
if ( 'all_with_meta' == $this->query_vars['fields'] ) {
cache_users( $this->results );
$r = array();
foreach ( $this->results as $userid )
$r[ $userid ] = new WP_User( $userid, '', $this->query_vars['blog_id'] );
$this->results = $r;
}
}
/*
* Used internally to generate an SQL string for searching across multiple columns
*
* @access protected
* @since 3.1.0
*
* @param string $string
* @param array $cols
* @param bool $wild Whether to allow wildcard searches. Default is false for Network Admin, true for
* single site. Single site allows leading and trailing wildcards, Network Admin only trailing.
* @return string
*/
function get_search_sql( $string, $cols, $wild = false ) {
$string = esc_sql( $string );
$searches = array();
$leading_wild = ( 'leading' == $wild || 'both' == $wild ) ? '%' : '';
$trailing_wild = ( 'trailing' == $wild || 'both' == $wild ) ? '%' : '';
foreach ( $cols as $col ) {
if ( 'ID' == $col )
$searches[] = "$col = '$string'";
else
$searches[] = "$col LIKE '$leading_wild" . like_escape($string) . "$trailing_wild'";
}
return ' AND (' . implode(' OR ', $searches) . ')';
}
/**
* Return the list of users
*
* @since 3.1.0
* @access public
*
* @return array
*/
function get_results() {
return $this->results;
}
/**
* Return the total number of users for the current query
*
* @since 3.1.0
* @access public
*
* @return array
*/
function get_total() {
return $this->total_users;
}
}
/**
* Retrieve list of users matching criteria.
*
* @since 3.1.0
* @uses $wpdb
* @uses WP_User_Query See for default arguments and information.
*
* @param array $args Optional.
* @return array List of users.
*/
function get_users( $args = array() ) {
$args = wp_parse_args( $args );
$args['count_total'] = false;
$user_search = new WP_User_Query($args);
return (array) $user_search->get_results();
}
/**
* Get the blogs a user belongs to.
*
* @since 3.0.0
*
* @param int $user_id User ID
* @param bool $all Whether to retrieve all blogs, or only blogs that are not marked as deleted, archived, or spam.
* @return array A list of the user's blogs. False if the user was not found or an empty array if the user has no blogs.
*/
function get_blogs_of_user( $user_id, $all = false ) {
global $wpdb;
if ( ! is_multisite() ) {
$blog_id = get_current_blog_id();
$blogs = array( $blog_id => new stdClass );
$blogs[ $blog_id ]->userblog_id = $blog_id;
$blogs[ $blog_id ]->blogname = get_option('blogname');
$blogs[ $blog_id ]->domain = '';
$blogs[ $blog_id ]->path = '';
$blogs[ $blog_id ]->site_id = 1;
$blogs[ $blog_id ]->siteurl = get_option('siteurl');
return $blogs;
}
$user_id = (int) $user_id;
// Logged out users can't have blogs
if ( empty( $user_id ) )
return false;
$keys = get_user_meta( $user_id );
if ( empty( $keys ) )
return false;
$blogs = array();
if ( isset( $keys[ $wpdb->base_prefix . 'capabilities' ] ) && defined( 'MULTISITE' ) ) {
$blog = get_blog_details( 1 );
if ( $blog && isset( $blog->domain ) && ( $all || ( ! $blog->archived && ! $blog->spam && ! $blog->deleted ) ) ) {
$blogs[ 1 ] = (object) array(
'userblog_id' => 1,
'blogname' => $blog->blogname,
'domain' => $blog->domain,
'path' => $blog->path,
'site_id' => $blog->site_id,
'siteurl' => $blog->siteurl,
);
}
unset( $keys[ $wpdb->base_prefix . 'capabilities' ] );
}
$keys = array_keys( $keys );
foreach ( $keys as $key ) {
if ( 'capabilities' !== substr( $key, -12 ) )
continue;
if ( 0 !== strpos( $key, $wpdb->base_prefix ) )
continue;
$blog_id = str_replace( array( $wpdb->base_prefix, '_capabilities' ), '', $key );
if ( ! is_numeric( $blog_id ) )
continue;
$blog_id = (int) $blog_id;
$blog = get_blog_details( $blog_id );
if ( $blog && isset( $blog->domain ) && ( $all || ( ! $blog->archived && ! $blog->spam && ! $blog->deleted ) ) ) {
$blogs[ $blog_id ] = (object) array(
'userblog_id' => $blog_id,
'blogname' => $blog->blogname,
'domain' => $blog->domain,
'path' => $blog->path,
'site_id' => $blog->site_id,
'siteurl' => $blog->siteurl,
);
}
}
return apply_filters( 'get_blogs_of_user', $blogs, $user_id, $all );
}
/**
* Find out whether a user is a member of a given blog.
*
* @since MU 1.1
* @uses get_blogs_of_user()
*
* @param int $user_id The unique ID of the user
* @param int $blog Optional. If no blog_id is provided, current site is used
* @return bool
*/
function is_user_member_of_blog( $user_id = 0, $blog_id = 0 ) {
$user_id = (int) $user_id;
$blog_id = (int) $blog_id;
if ( empty( $user_id ) )
$user_id = get_current_user_id();
if ( empty( $blog_id ) ) {
global $wpdb;
$blog_id = $wpdb->blogid;
}
$blogs = get_blogs_of_user( $user_id );
if ( is_array( $blogs ) )
return array_key_exists( $blog_id, $blogs );
else
return false;
}
/**
* Add meta data field to a user.
*
* Post meta data is called "Custom Fields" on the Administration Screens.
*
* @since 3.0.0
* @uses add_metadata()
* @link http://codex.wordpress.org/Function_Reference/add_user_meta
*
* @param int $user_id Post ID.
* @param string $meta_key Metadata name.
* @param mixed $meta_value Metadata value.
* @param bool $unique Optional, default is false. Whether the same key should not be added.
* @return bool False for failure. True for success.
*/
function add_user_meta($user_id, $meta_key, $meta_value, $unique = false) {
return add_metadata('user', $user_id, $meta_key, $meta_value, $unique);
}
/**
* Remove metadata matching criteria from a user.
*
* You can match based on the key, or key and value. Removing based on key and
* value, will keep from removing duplicate metadata with the same key. It also
* allows removing all metadata matching key, if needed.
*
* @since 3.0.0
* @uses delete_metadata()
* @link http://codex.wordpress.org/Function_Reference/delete_user_meta
*
* @param int $user_id user ID
* @param string $meta_key Metadata name.
* @param mixed $meta_value Optional. Metadata value.
* @return bool False for failure. True for success.
*/
function delete_user_meta($user_id, $meta_key, $meta_value = '') {
return delete_metadata('user', $user_id, $meta_key, $meta_value);
}
/**
* Retrieve user meta field for a user.
*
* @since 3.0.0
* @uses get_metadata()
* @link http://codex.wordpress.org/Function_Reference/get_user_meta
*
* @param int $user_id Post ID.
* @param string $key The meta key to retrieve.
* @param bool $single Whether to return a single value.
* @return mixed Will be an array if $single is false. Will be value of meta data field if $single
* is true.
*/
function get_user_meta($user_id, $key = '', $single = false) {
return get_metadata('user', $user_id, $key, $single);
}
/**
* Update user meta field based on user ID.
*
* Use the $prev_value parameter to differentiate between meta fields with the
* same key and user ID.
*
* If the meta field for the user does not exist, it will be added.
*
* @since 3.0.0
* @uses update_metadata
* @link http://codex.wordpress.org/Function_Reference/update_user_meta
*
* @param int $user_id Post ID.
* @param string $meta_key Metadata key.
* @param mixed $meta_value Metadata value.
* @param mixed $prev_value Optional. Previous value to check before removing.
* @return bool False on failure, true if success.
*/
function update_user_meta($user_id, $meta_key, $meta_value, $prev_value = '') {
return update_metadata('user', $user_id, $meta_key, $meta_value, $prev_value);
}
/**
* Count number of users who have each of the user roles.
*
* Assumes there are neither duplicated nor orphaned capabilities meta_values.
* Assumes role names are unique phrases. Same assumption made by WP_User_Query::prepare_query()
* Using $strategy = 'time' this is CPU-intensive and should handle around 10^7 users.
* Using $strategy = 'memory' this is memory-intensive and should handle around 10^5 users, but see WP Bug #12257.
*
* @since 3.0.0
* @param string $strategy 'time' or 'memory'
* @return array Includes a grand total and an array of counts indexed by role strings.
*/
function count_users($strategy = 'time') {
global $wpdb, $wp_roles;
// Initialize
$id = get_current_blog_id();
$blog_prefix = $wpdb->get_blog_prefix($id);
$result = array();
if ( 'time' == $strategy ) {
global $wp_roles;
if ( ! isset( $wp_roles ) )
$wp_roles = new WP_Roles();
$avail_roles = $wp_roles->get_names();
// Build a CPU-intensive query that will return concise information.
$select_count = array();
foreach ( $avail_roles as $this_role => $name ) {
$select_count[] = "COUNT(NULLIF(`meta_value` LIKE '%" . like_escape($this_role) . "%', FALSE))";
}
$select_count = implode(', ', $select_count);
// Add the meta_value index to the selection list, then run the query.
$row = $wpdb->get_row( "SELECT $select_count, COUNT(*) FROM $wpdb->usermeta WHERE meta_key = '{$blog_prefix}capabilities'", ARRAY_N );
// Run the previous loop again to associate results with role names.
$col = 0;
$role_counts = array();
foreach ( $avail_roles as $this_role => $name ) {
$count = (int) $row[$col++];
if ($count > 0) {
$role_counts[$this_role] = $count;
}
}
// Get the meta_value index from the end of the result set.
$total_users = (int) $row[$col];
$result['total_users'] = $total_users;
$result['avail_roles'] =& $role_counts;
} else {
$avail_roles = array();
$users_of_blog = $wpdb->get_col( "SELECT meta_value FROM $wpdb->usermeta WHERE meta_key = '{$blog_prefix}capabilities'" );
foreach ( $users_of_blog as $caps_meta ) {
$b_roles = unserialize($caps_meta);
if ( is_array($b_roles) ) {
foreach ( $b_roles as $b_role => $val ) {
if ( isset($avail_roles[$b_role]) ) {
$avail_roles[$b_role]++;
} else {
$avail_roles[$b_role] = 1;
}
}
}
}
$result['total_users'] = count( $users_of_blog );
$result['avail_roles'] =& $avail_roles;
}
return $result;
}
//
// Private helper functions
//
/**
* Set up global user vars.
*
* Used by wp_set_current_user() for back compat. Might be deprecated in the future.
*
* @since 2.0.4
* @global string $userdata User description.
* @global string $user_login The user username for logging in
* @global int $user_level The level of the user
* @global int $user_ID The ID of the user
* @global string $user_email The email address of the user
* @global string $user_url The url in the user's profile
* @global string $user_pass_md5 MD5 of the user's password
* @global string $user_identity The display name of the user
*
* @param int $for_user_id Optional. User ID to set up global data.
*/
function setup_userdata($for_user_id = '') {
global $user_login, $userdata, $user_level, $user_ID, $user_email, $user_url, $user_pass_md5, $user_identity;
if ( '' == $for_user_id )
$user = wp_get_current_user();
else
$user = new WP_User($for_user_id);
$userdata = $user->data;
$user_ID = (int) $user->ID;
$user_level = (int) isset($user->user_level) ? $user->user_level : 0;
if ( 0 == $user->ID ) {
$user_login = $user_email = $user_url = $user_pass_md5 = $user_identity = '';
return;
}
$user_login = $user->user_login;
$user_email = $user->user_email;
$user_url = $user->user_url;
$user_pass_md5 = md5($user->user_pass);
$user_identity = $user->display_name;
}
/**
* Create dropdown HTML content of users.
*
* The content can either be displayed, which it is by default or retrieved by
* setting the 'echo' argument. The 'include' and 'exclude' arguments do not
* need to be used; all users will be displayed in that case. Only one can be
* used, either 'include' or 'exclude', but not both.
*
* The available arguments are as follows:
*
*
show_option_all - Text to show all and whether HTML option exists.
*
show_option_none - Text for show none and whether HTML option exists.
*
hide_if_only_one_author - Don't create the dropdown if there is only one user.
*
orderby - SQL order by clause for what order the users appear. Default is 'display_name'.
*
order - Default is 'ASC'. Can also be 'DESC'.
*
include - User IDs to include.
*
exclude - User IDs to exclude.
*
multi - Default is 'false'. Whether to skip the ID attribute on the 'select' element. A 'true' value is overridden when id argument is set.
*
show - Default is 'display_name'. User table column to display. If the selected item is empty then the user_login will be displayed in parentheses
*
echo - Default is '1'. Whether to display or retrieve content.
*
selected - Which User ID is selected.
*
include_selected - Always include the selected user ID in the dropdown. Default is false.
*
name - Default is 'user'. Name attribute of select element.
*
id - Default is the value of the 'name' parameter. ID attribute of select element.
*
class - Class attribute of select element.
*
blog_id - ID of blog (Multisite only). Defaults to ID of current blog.
*
who - Which users to query. Currently only 'authors' is supported. Default is all users.
*
*
* @since 2.3.0
* @uses $wpdb WordPress database object for queries
*
* @param string|array $args Optional. Override defaults.
* @return string|null Null on display. String of HTML content on retrieve.
*/
function wp_dropdown_users( $args = '' ) {
$defaults = array(
'show_option_all' => '', 'show_option_none' => '', 'hide_if_only_one_author' => '',
'orderby' => 'display_name', 'order' => 'ASC',
'include' => '', 'exclude' => '', 'multi' => 0,
'show' => 'display_name', 'echo' => 1,
'selected' => 0, 'name' => 'user', 'class' => '', 'id' => '',
'blog_id' => $GLOBALS['blog_id'], 'who' => '', 'include_selected' => false
);
$defaults['selected'] = is_author() ? get_query_var( 'author' ) : 0;
$r = wp_parse_args( $args, $defaults );
extract( $r, EXTR_SKIP );
$query_args = wp_array_slice_assoc( $r, array( 'blog_id', 'include', 'exclude', 'orderby', 'order', 'who' ) );
$query_args['fields'] = array( 'ID', $show );
$users = get_users( $query_args );
$output = '';
if ( !empty($users) && ( empty($hide_if_only_one_author) || count($users) > 1 ) ) {
$name = esc_attr( $name );
if ( $multi && ! $id )
$id = '';
else
$id = $id ? " id='" . esc_attr( $id ) . "'" : " id='$name'";
$output = "";
}
$output = apply_filters('wp_dropdown_users', $output);
if ( $echo )
echo $output;
return $output;
}
/**
* Sanitize user field based on context.
*
* Possible context values are: 'raw', 'edit', 'db', 'display', 'attribute' and 'js'. The
* 'display' context is used by default. 'attribute' and 'js' contexts are treated like 'display'
* when calling filters.
*
* @since 2.3.0
* @uses apply_filters() Calls 'edit_$field' and '{$field_no_prefix}_edit_pre' passing $value and
* $user_id if $context == 'edit' and field name prefix == 'user_'.
*
* @uses apply_filters() Calls 'edit_user_$field' passing $value and $user_id if $context == 'db'.
* @uses apply_filters() Calls 'pre_$field' passing $value if $context == 'db' and field name prefix == 'user_'.
* @uses apply_filters() Calls '{$field}_pre' passing $value if $context == 'db' and field name prefix != 'user_'.
*
* @uses apply_filters() Calls '$field' passing $value, $user_id and $context if $context == anything
* other than 'raw', 'edit' and 'db' and field name prefix == 'user_'.
* @uses apply_filters() Calls 'user_$field' passing $value if $context == anything other than 'raw',
* 'edit' and 'db' and field name prefix != 'user_'.
*
* @param string $field The user Object field name.
* @param mixed $value The user Object value.
* @param int $user_id user ID.
* @param string $context How to sanitize user fields. Looks for 'raw', 'edit', 'db', 'display',
* 'attribute' and 'js'.
* @return mixed Sanitized value.
*/
function sanitize_user_field($field, $value, $user_id, $context) {
$int_fields = array('ID');
if ( in_array($field, $int_fields) )
$value = (int) $value;
if ( 'raw' == $context )
return $value;
if ( !is_string($value) && !is_numeric($value) )
return $value;
$prefixed = false;
if ( false !== strpos($field, 'user_') ) {
$prefixed = true;
$field_no_prefix = str_replace('user_', '', $field);
}
if ( 'edit' == $context ) {
if ( $prefixed ) {
$value = apply_filters("edit_{$field}", $value, $user_id);
} else {
$value = apply_filters("edit_user_{$field}", $value, $user_id);
}
if ( 'description' == $field )
$value = esc_html( $value ); // textarea_escaped?
else
$value = esc_attr($value);
} else if ( 'db' == $context ) {
if ( $prefixed ) {
$value = apply_filters("pre_{$field}", $value);
} else {
$value = apply_filters("pre_user_{$field}", $value);
}
} else {
// Use display filters by default.
if ( $prefixed )
$value = apply_filters($field, $value, $user_id, $context);
else
$value = apply_filters("user_{$field}", $value, $user_id, $context);
}
if ( 'user_url' == $field )
$value = esc_url($value);
if ( 'attribute' == $context )
$value = esc_attr($value);
else if ( 'js' == $context )
$value = esc_js($value);
return $value;
}
/**
* Update all user caches
*
* @since 3.0.0
*
* @param object $user User object to be cached
*/
function update_user_caches($user) {
wp_cache_add($user->ID, $user, 'users');
wp_cache_add($user->user_login, $user->ID, 'userlogins');
wp_cache_add($user->user_email, $user->ID, 'useremail');
wp_cache_add($user->user_nicename, $user->ID, 'userslugs');
}
/**
* Clean all user caches
*
* @since 3.0.0
*
* @param int $id User ID
*/
function clean_user_cache($id) {
$user = WP_User::get_data_by( 'id', $id );
wp_cache_delete($id, 'users');
wp_cache_delete($user->user_login, 'userlogins');
wp_cache_delete($user->user_email, 'useremail');
wp_cache_delete($user->user_nicename, 'userslugs');
}
/**
* Checks whether the given username exists.
*
* @since 2.0.0
*
* @param string $username Username.
* @return null|int The user's ID on success, and null on failure.
*/
function username_exists( $username ) {
if ( $user = get_user_by('login', $username ) ) {
return $user->ID;
} else {
return null;
}
}
/**
* Checks whether the given email exists.
*
* @since 2.1.0
* @uses $wpdb
*
* @param string $email Email.
* @return bool|int The user's ID on success, and false on failure.
*/
function email_exists( $email ) {
if ( $user = get_user_by('email', $email) )
return $user->ID;
return false;
}
/**
* Checks whether an username is valid.
*
* @since 2.0.1
* @uses apply_filters() Calls 'validate_username' hook on $valid check and $username as parameters
*
* @param string $username Username.
* @return bool Whether username given is valid
*/
function validate_username( $username ) {
$sanitized = sanitize_user( $username, true );
$valid = ( $sanitized == $username );
return apply_filters( 'validate_username', $valid, $username );
}
/**
* Insert an user into the database.
*
* Can update a current user or insert a new user based on whether the user's ID
* is present.
*
* Can be used to update the user's info (see below), set the user's role, and
* set the user's preference on whether they want the rich editor on.
*
* Most of the $userdata array fields have filters associated with the values.
* The exceptions are 'rich_editing', 'role', 'jabber', 'aim', 'yim',
* 'user_registered', and 'ID'. The filters have the prefix 'pre_user_' followed
* by the field name. An example using 'description' would have the filter
* called, 'pre_user_description' that can be hooked into.
*
* The $userdata array can contain the following fields:
* 'ID' - An integer that will be used for updating an existing user.
* 'user_pass' - A string that contains the plain text password for the user.
* 'user_login' - A string that contains the user's username for logging in.
* 'user_nicename' - A string that contains a nicer looking name for the user.
* The default is the user's username.
* 'user_url' - A string containing the user's URL for the user's web site.
* 'user_email' - A string containing the user's email address.
* 'display_name' - A string that will be shown on the site. Defaults to user's
* username. It is likely that you will want to change this, for appearance.
* 'nickname' - The user's nickname, defaults to the user's username.
* 'first_name' - The user's first name.
* 'last_name' - The user's last name.
* 'description' - A string containing content about the user.
* 'rich_editing' - A string for whether to enable the rich editor. False
* if not empty.
* 'user_registered' - The date the user registered. Format is 'Y-m-d H:i:s'.
* 'role' - A string used to set the user's role.
* 'jabber' - User's Jabber account.
* 'aim' - User's AOL IM account.
* 'yim' - User's Yahoo IM account.
*
* @since 2.0.0
* @uses $wpdb WordPress database layer.
* @uses apply_filters() Calls filters for most of the $userdata fields with the prefix 'pre_user'. See note above.
* @uses do_action() Calls 'profile_update' hook when updating giving the user's ID
* @uses do_action() Calls 'user_register' hook when creating a new user giving the user's ID
*
* @param array $userdata An array of user data.
* @return int|WP_Error The newly created user's ID or a WP_Error object if the user could not be created.
*/
function wp_insert_user($userdata) {
global $wpdb;
extract($userdata, EXTR_SKIP);
// Are we updating or creating?
if ( !empty($ID) ) {
$ID = (int) $ID;
$update = true;
$old_user_data = WP_User::get_data_by( 'id', $ID );
} else {
$update = false;
// Hash the password
$user_pass = wp_hash_password($user_pass);
}
$user_login = sanitize_user($user_login, true);
$user_login = apply_filters('pre_user_login', $user_login);
//Remove any non-printable chars from the login string to see if we have ended up with an empty username
$user_login = trim($user_login);
if ( empty($user_login) )
return new WP_Error('empty_user_login', __('Cannot create a user with an empty login name.') );
if ( !$update && username_exists( $user_login ) )
return new WP_Error('existing_user_login', __('This username is already registered.') );
if ( empty($user_nicename) )
$user_nicename = sanitize_title( $user_login );
$user_nicename = apply_filters('pre_user_nicename', $user_nicename);
if ( empty($user_url) )
$user_url = '';
$user_url = apply_filters('pre_user_url', $user_url);
if ( empty($user_email) )
$user_email = '';
$user_email = apply_filters('pre_user_email', $user_email);
if ( !$update && ! defined( 'WP_IMPORTING' ) && email_exists($user_email) )
return new WP_Error('existing_user_email', __('This email address is already registered.') );
if ( empty($display_name) )
$display_name = $user_login;
$display_name = apply_filters('pre_user_display_name', $display_name);
if ( empty($nickname) )
$nickname = $user_login;
$nickname = apply_filters('pre_user_nickname', $nickname);
if ( empty($first_name) )
$first_name = '';
$first_name = apply_filters('pre_user_first_name', $first_name);
if ( empty($last_name) )
$last_name = '';
$last_name = apply_filters('pre_user_last_name', $last_name);
if ( empty($description) )
$description = '';
$description = apply_filters('pre_user_description', $description);
if ( empty($rich_editing) )
$rich_editing = 'true';
if ( empty($comment_shortcuts) )
$comment_shortcuts = 'false';
if ( empty($admin_color) )
$admin_color = 'fresh';
$admin_color = preg_replace('|[^a-z0-9 _.\-@]|i', '', $admin_color);
if ( empty($use_ssl) )
$use_ssl = 0;
if ( empty($user_registered) )
$user_registered = gmdate('Y-m-d H:i:s');
if ( empty($show_admin_bar_front) )
$show_admin_bar_front = 'true';
$user_nicename_check = $wpdb->get_var( $wpdb->prepare("SELECT ID FROM $wpdb->users WHERE user_nicename = %s AND user_login != %s LIMIT 1" , $user_nicename, $user_login));
if ( $user_nicename_check ) {
$suffix = 2;
while ($user_nicename_check) {
$alt_user_nicename = $user_nicename . "-$suffix";
$user_nicename_check = $wpdb->get_var( $wpdb->prepare("SELECT ID FROM $wpdb->users WHERE user_nicename = %s AND user_login != %s LIMIT 1" , $alt_user_nicename, $user_login));
$suffix++;
}
$user_nicename = $alt_user_nicename;
}
$data = compact( 'user_pass', 'user_email', 'user_url', 'user_nicename', 'display_name', 'user_registered' );
$data = stripslashes_deep( $data );
if ( $update ) {
$wpdb->update( $wpdb->users, $data, compact( 'ID' ) );
$user_id = (int) $ID;
} else {
$wpdb->insert( $wpdb->users, $data + compact( 'user_login' ) );
$user_id = (int) $wpdb->insert_id;
}
$user = new WP_User( $user_id );
foreach ( _get_additional_user_keys( $user ) as $key ) {
if ( isset( $$key ) )
update_user_meta( $user_id, $key, $$key );
}
if ( isset($role) )
$user->set_role($role);
elseif ( !$update )
$user->set_role(get_option('default_role'));
wp_cache_delete($user_id, 'users');
wp_cache_delete($user_login, 'userlogins');
if ( $update )
do_action('profile_update', $user_id, $old_user_data);
else
do_action('user_register', $user_id);
return $user_id;
}
/**
* Update an user in the database.
*
* It is possible to update a user's password by specifying the 'user_pass'
* value in the $userdata parameter array.
*
* If $userdata does not contain an 'ID' key, then a new user will be created
* and the new user's ID will be returned.
*
* If current user's password is being updated, then the cookies will be
* cleared.
*
* @since 2.0.0
* @see wp_insert_user() For what fields can be set in $userdata
* @uses wp_insert_user() Used to update existing user or add new one if user doesn't exist already
*
* @param array $userdata An array of user data.
* @return int The updated user's ID.
*/
function wp_update_user($userdata) {
$ID = (int) $userdata['ID'];
// First, get all of the original fields
$user_obj = get_userdata( $ID );
$user = get_object_vars( $user_obj->data );
// Add additional custom fields
foreach ( _get_additional_user_keys( $user_obj ) as $key ) {
$user[ $key ] = get_user_meta( $ID, $key, true );
}
// Escape data pulled from DB.
$user = add_magic_quotes( $user );
// If password is changing, hash it now.
if ( ! empty($userdata['user_pass']) ) {
$plaintext_pass = $userdata['user_pass'];
$userdata['user_pass'] = wp_hash_password($userdata['user_pass']);
}
wp_cache_delete($user[ 'user_email' ], 'useremail');
// Merge old and new fields with new fields overwriting old ones.
$userdata = array_merge($user, $userdata);
$user_id = wp_insert_user($userdata);
// Update the cookies if the password changed.
$current_user = wp_get_current_user();
if ( $current_user->ID == $ID ) {
if ( isset($plaintext_pass) ) {
wp_clear_auth_cookie();
wp_set_auth_cookie($ID);
}
}
return $user_id;
}
/**
* A simpler way of inserting an user into the database.
*
* Creates a new user with just the username, password, and email. For more
* complex user creation use wp_insert_user() to specify more information.
*
* @since 2.0.0
* @see wp_insert_user() More complete way to create a new user
*
* @param string $username The user's username.
* @param string $password The user's password.
* @param string $email The user's email (optional).
* @return int The new user's ID.
*/
function wp_create_user($username, $password, $email = '') {
$user_login = esc_sql( $username );
$user_email = esc_sql( $email );
$user_pass = $password;
$userdata = compact('user_login', 'user_email', 'user_pass');
return wp_insert_user($userdata);
}
/**
* Return a list of meta keys that wp_insert_user() is supposed to set.
*
* @access private
* @since 3.3.0
*
* @param object $user WP_User instance
* @return array
*/
function _get_additional_user_keys( $user ) {
$keys = array( 'first_name', 'last_name', 'nickname', 'description', 'rich_editing', 'comment_shortcuts', 'admin_color', 'use_ssl', 'show_admin_bar_front' );
return array_merge( $keys, array_keys( _wp_get_user_contactmethods( $user ) ) );
}
/**
* Set up the default contact methods
*
* @access private
* @since
*
* @param object $user User data object (optional)
* @return array $user_contactmethods Array of contact methods and their labels.
*/
function _wp_get_user_contactmethods( $user = null ) {
$user_contactmethods = array(
'aim' => __('AIM'),
'yim' => __('Yahoo IM'),
'jabber' => __('Jabber / Google Talk')
);
return apply_filters( 'user_contactmethods', $user_contactmethods, $user );
}
?>