add('empty_username', __('ERROR: The username field is empty.'));
if ( empty($credentials['user_password']) )
$error->add('empty_password', __('ERROR: The password field is empty.'));
return $error;
}
$user = wp_authenticate($credentials['user_login'], $credentials['user_password']);
if ( is_wp_error($user) )
return $user;
wp_set_auth_cookie($user->ID, $credentials['remember']);
do_action('wp_login', $credentials['user_login']);
return $user;
}
function get_profile($field, $user = false) {
global $wpdb;
if ( !$user )
$user = $wpdb->escape($_COOKIE[USER_COOKIE]);
return $wpdb->get_var("SELECT $field FROM $wpdb->users WHERE user_login = '$user'");
}
function get_usernumposts($userid) {
global $wpdb;
$userid = (int) $userid;
return $wpdb->get_var("SELECT COUNT(*) FROM $wpdb->posts WHERE post_author = '$userid' AND post_type = 'post' AND " . get_private_posts_cap_sql('post'));
}
// TODO: xmlrpc only. Maybe move to xmlrpc.php.
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
//
function get_user_option( $option, $user = 0 ) {
global $wpdb;
$option = preg_replace('|[^a-z0-9_]|i', '', $option);
if ( empty($user) )
$user = wp_get_current_user();
else
$user = get_userdata($user);
if ( isset( $user->{$wpdb->prefix . $option} ) ) // Blog specific
$result = $user->{$wpdb->prefix . $option};
elseif ( isset( $user->{$option} ) ) // User specific and cross-blog
$result = $user->{$option};
else // Blog global
$result = get_option( $option );
return apply_filters("get_user_option_{$option}", $result, $option, $user);
}
function update_user_option( $user_id, $option_name, $newvalue, $global = false ) {
global $wpdb;
if ( !$global )
$option_name = $wpdb->prefix . $option_name;
return update_usermeta( $user_id, $option_name, $newvalue );
}
// Get users with capabilities for the current blog.
// For setups that use the multi-blog feature.
function get_users_of_blog( $id = '' ) {
global $wpdb, $blog_id;
if ( empty($id) )
$id = (int) $blog_id;
$users = $wpdb->get_results( "SELECT user_id, user_login, display_name, user_email, meta_value FROM $wpdb->users, $wpdb->usermeta WHERE " . $wpdb->users . ".ID = " . $wpdb->usermeta . ".user_id AND meta_key = '" . $wpdb->prefix . "capabilities' ORDER BY {$wpdb->usermeta}.user_id" );
return $users;
}
//
// User meta functions
//
function delete_usermeta( $user_id, $meta_key, $meta_value = '' ) {
global $wpdb;
if ( !is_numeric( $user_id ) )
return false;
$meta_key = preg_replace('|[^a-z0-9_]|i', '', $meta_key);
if ( is_array($meta_value) || is_object($meta_value) )
$meta_value = serialize($meta_value);
$meta_value = trim( $meta_value );
if ( ! empty($meta_value) )
$wpdb->query("DELETE FROM $wpdb->usermeta WHERE user_id = '$user_id' AND meta_key = '$meta_key' AND meta_value = '$meta_value'");
else
$wpdb->query("DELETE FROM $wpdb->usermeta WHERE user_id = '$user_id' AND meta_key = '$meta_key'");
wp_cache_delete($user_id, 'users');
return true;
}
function get_usermeta( $user_id, $meta_key = '') {
global $wpdb;
$user_id = (int) $user_id;
if ( !$user_id )
return false;
if ( !empty($meta_key) ) {
$meta_key = preg_replace('|[^a-z0-9_]|i', '', $meta_key);
$user = wp_cache_get($user_id, 'users');
// Check the cached user object
if ( false !== $user && isset($user->$meta_key) )
$metas = array($user->$meta_key);
else
$metas = $wpdb->get_col( $wpdb->prepare("SELECT meta_value FROM $wpdb->usermeta WHERE user_id = %d AND meta_key = %s", $user_id, $meta_key) );
} else {
$metas = $wpdb->get_col( $wpdb->prepare("SELECT meta_value FROM $wpdb->usermeta WHERE user_id = %d", $user_id) );
}
if ( empty($metas) ) {
if ( empty($meta_key) )
return array();
else
return '';
}
$metas = array_map('maybe_unserialize', $metas);
if ( count($metas) == 1 )
return $metas[0];
else
return $metas;
}
function update_usermeta( $user_id, $meta_key, $meta_value ) {
global $wpdb;
if ( !is_numeric( $user_id ) )
return false;
$meta_key = preg_replace('|[^a-z0-9_]|i', '', $meta_key);
// FIXME: usermeta data is assumed to be already escaped
if ( is_string($meta_value) )
$meta_value = stripslashes($meta_value);
$meta_value = maybe_serialize($meta_value);
$meta_value = $wpdb->escape($meta_value);
if (empty($meta_value)) {
return delete_usermeta($user_id, $meta_key);
}
$cur = $wpdb->get_row("SELECT * FROM $wpdb->usermeta WHERE user_id = '$user_id' AND meta_key = '$meta_key'");
if ( !$cur ) {
$wpdb->query("INSERT INTO $wpdb->usermeta ( user_id, meta_key, meta_value )
VALUES
( '$user_id', '$meta_key', '$meta_value' )");
} else if ( $cur->meta_value != $meta_value ) {
$wpdb->query("UPDATE $wpdb->usermeta SET meta_value = '$meta_value' WHERE user_id = '$user_id' AND meta_key = '$meta_key'");
} else {
return false;
}
wp_cache_delete($user_id, 'users');
return true;
}
//
// Private helper functions
//
// Setup global user vars. Used by set_current_user() for back compat.
function setup_userdata($user_id = '') {
global $user_login, $userdata, $user_level, $user_ID, $user_email, $user_url, $user_pass_md5, $user_identity;
if ( '' == $user_id )
$user = wp_get_current_user();
else
$user = new WP_User($user_id);
if ( 0 == $user->ID )
return;
$userdata = $user->data;
$user_login = $user->user_login;
$user_level = (int) isset($user->user_level) ? $user->user_level : 0;
$user_ID = (int) $user->ID;
$user_email = $user->user_email;
$user_url = $user->user_url;
$user_pass_md5 = md5($user->user_pass);
$user_identity = $user->display_name;
}
function wp_dropdown_users( $args = '' ) {
global $wpdb;
$defaults = array(
'show_option_all' => '', 'show_option_none' => '',
'orderby' => 'display_name', 'order' => 'ASC',
'include' => '', 'exclude' => '',
'show' => 'display_name', 'echo' => 1,
'selected' => 0, 'name' => 'user', 'class' => ''
);
$defaults['selected'] = is_author() ? get_query_var( 'author' ) : 0;
$r = wp_parse_args( $args, $defaults );
extract( $r, EXTR_SKIP );
$query = "SELECT * FROM $wpdb->users";
$query_where = array();
if ( is_array($include) )
$include = join(',', $include);
$include = preg_replace('/[^0-9,]/', '', $include); // (int)
if ( $include )
$query_where[] = "ID IN ($include)";
if ( is_array($exclude) )
$exclude = join(',', $exclude);
$exclude = preg_replace('/[^0-9,]/', '', $exclude); // (int)
if ( $exclude )
$query_where[] = "ID NOT IN ($exclude)";
if ( $query_where )
$query .= " WHERE " . join(' AND', $query_where);
$query .= " ORDER BY $orderby $order";
$users = $wpdb->get_results( $query );
$output = '';
if ( !empty($users) ) {
$output = "";
}
$output = apply_filters('wp_dropdown_users', $output);
if ( $echo )
echo $output;
return $output;
}
function _fill_user( &$user ) {
global $wpdb;
$show = $wpdb->hide_errors();
$metavalues = $wpdb->get_results($wpdb->prepare("SELECT meta_key, meta_value FROM $wpdb->usermeta WHERE user_id = %d", $user->ID));
$wpdb->show_errors($show);
if ( $metavalues ) {
foreach ( $metavalues as $meta ) {
$value = maybe_unserialize($meta->meta_value);
$user->{$meta->meta_key} = $value;
}
}
$level = $wpdb->prefix . 'user_level';
if ( isset( $user->{$level} ) )
$user->user_level = $user->{$level};
// For backwards compat.
if ( isset($user->first_name) )
$user->user_firstname = $user->first_name;
if ( isset($user->last_name) )
$user->user_lastname = $user->last_name;
if ( isset($user->description) )
$user->user_description = $user->description;
wp_cache_add($user->ID, $user, 'users');
wp_cache_add($user->user_login, $user->ID, 'userlogins');
wp_cache_add($user->user_email, $user->ID, 'useremail');
}
?>