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<?php
/**
* WordPress user administration API.
*
* @package WordPress
* @subpackage Administration
*/
/**
* Creates a new user from the "Users" form using $_POST information.
*
* @since 2.0.0
*
* @return null|WP_Error|int Null when adding user, WP_Error or User ID integer when no parameters.
*/
function add_user() {
return edit_user();
}
/**
* Edit user settings based on contents of $_POST
*
* Used on user-edit.php and profile.php to manage and process user options, passwords etc.
*
* @since 2.0.0
*
* @param int $user_id Optional. User ID.
* @return int user id of the updated user
*/
function edit_user( $user_id = 0 ) {
global $wp_roles;
$user = new stdClass;
if ( $user_id ) {
$update = true;
$user->ID = (int) $user_id;
$userdata = get_userdata( $user_id );
$user->user_login = wp_slash( $userdata->user_login );
} else {
$update = false;
}
if ( !$update && isset( $_POST['user_login'] ) )
$user->user_login = sanitize_user($_POST['user_login'], true);
$pass1 = $pass2 = '';
if ( isset( $_POST['pass1'] ) )
$pass1 = $_POST['pass1'];
if ( isset( $_POST['pass2'] ) )
$pass2 = $_POST['pass2'];
if ( isset( $_POST['role'] ) && current_user_can( 'edit_users' ) ) {
$new_role = sanitize_text_field( $_POST['role'] );
$potential_role = isset($wp_roles->role_objects[$new_role]) ? $wp_roles->role_objects[$new_role] : false;
// Don't let anyone with 'edit_users' (admins) edit their own role to something without it.
// Multisite super admins can freely edit their blog roles -- they possess all caps.
if ( ( is_multisite() && current_user_can( 'manage_sites' ) ) || $user_id != get_current_user_id() || ($potential_role && $potential_role->has_cap( 'edit_users' ) ) )
$user->role = $new_role;
// If the new role isn't editable by the logged-in user die with error
$editable_roles = get_editable_roles();
if ( ! empty( $new_role ) && empty( $editable_roles[$new_role] ) )
wp_die(__('You can’t give users that role.'));
}
if ( isset( $_POST['email'] ))
$user->user_email = sanitize_text_field( wp_unslash( $_POST['email'] ) );
if ( isset( $_POST['url'] ) ) {
if ( empty ( $_POST['url'] ) || $_POST['url'] == 'http://' ) {
$user->user_url = '';
} else {
$user->user_url = esc_url_raw( $_POST['url'] );
$protocols = implode( '|', array_map( 'preg_quote', wp_allowed_protocols() ) );
$user->user_url = preg_match('/^(' . $protocols . '):/is', $user->user_url) ? $user->user_url : 'http://'.$user->user_url;
}
}
if ( isset( $_POST['first_name'] ) )
$user->first_name = sanitize_text_field( $_POST['first_name'] );
if ( isset( $_POST['last_name'] ) )
$user->last_name = sanitize_text_field( $_POST['last_name'] );
if ( isset( $_POST['nickname'] ) )
$user->nickname = sanitize_text_field( $_POST['nickname'] );
if ( isset( $_POST['display_name'] ) )
$user->display_name = sanitize_text_field( $_POST['display_name'] );
if ( isset( $_POST['description'] ) )
$user->description = trim( $_POST['description'] );
foreach ( wp_get_user_contact_methods( $user ) as $method => $name ) {
if ( isset( $_POST[$method] ))
$user->$method = sanitize_text_field( $_POST[$method] );
}
if ( $update ) {
$user->rich_editing = isset( $_POST['rich_editing'] ) && 'false' == $_POST['rich_editing'] ? 'false' : 'true';
$user->admin_color = isset( $_POST['admin_color'] ) ? sanitize_text_field( $_POST['admin_color'] ) : 'fresh';
$user->show_admin_bar_front = isset( $_POST['admin_bar_front'] ) ? 'true' : 'false';
}
$user->comment_shortcuts = isset( $_POST['comment_shortcuts'] ) && 'true' == $_POST['comment_shortcuts'] ? 'true' : '';
$user->use_ssl = 0;
if ( !empty($_POST['use_ssl']) )
$user->use_ssl = 1;
$errors = new WP_Error();
/* checking that username has been typed */
if ( $user->user_login == '' )
$errors->add( 'user_login', __( '<strong>ERROR</strong>: Please enter a username.' ) );
/* checking the password has been typed twice */
/**
* Fires before the password and confirm password fields are checked for congruity.
*
* @since 1.5.1
*
* @param string $user_login The username.
* @param string &$pass1 The password, passed by reference.
* @param string &$pass2 The confirmed password, passed by reference.
*/
do_action_ref_array( 'check_passwords', array( $user->user_login, &$pass1, &$pass2 ) );
if ( $update ) {
if ( empty($pass1) && !empty($pass2) )
$errors->add( 'pass', __( '<strong>ERROR</strong>: You entered your new password only once.' ), array( 'form-field' => 'pass1' ) );
elseif ( !empty($pass1) && empty($pass2) )
$errors->add( 'pass', __( '<strong>ERROR</strong>: You entered your new password only once.' ), array( 'form-field' => 'pass2' ) );
} else {
if ( empty($pass1) )
$errors->add( 'pass', __( '<strong>ERROR</strong>: Please enter your password.' ), array( 'form-field' => 'pass1' ) );
elseif ( empty($pass2) )
$errors->add( 'pass', __( '<strong>ERROR</strong>: Please enter your password twice.' ), array( 'form-field' => 'pass2' ) );
}
/* Check for "\" in password */
if ( false !== strpos( wp_unslash( $pass1 ), "\\" ) )
$errors->add( 'pass', __( '<strong>ERROR</strong>: Passwords may not contain the character "\\".' ), array( 'form-field' => 'pass1' ) );
/* checking the password has been typed twice the same */
if ( $pass1 != $pass2 )
$errors->add( 'pass', __( '<strong>ERROR</strong>: Please enter the same password in the two password fields.' ), array( 'form-field' => 'pass1' ) );
if ( !empty( $pass1 ) )
$user->user_pass = $pass1;
if ( !$update && isset( $_POST['user_login'] ) && !validate_username( $_POST['user_login'] ) )
$errors->add( 'user_login', __( '<strong>ERROR</strong>: This username is invalid because it uses illegal characters. Please enter a valid username.' ));
if ( !$update && username_exists( $user->user_login ) )
$errors->add( 'user_login', __( '<strong>ERROR</strong>: This username is already registered. Please choose another one.' ));
/* checking e-mail address */
if ( empty( $user->user_email ) ) {
$errors->add( 'empty_email', __( '<strong>ERROR</strong>: Please enter an e-mail address.' ), array( 'form-field' => 'email' ) );
} elseif ( !is_email( $user->user_email ) ) {
$errors->add( 'invalid_email', __( '<strong>ERROR</strong>: The email address isn’t correct.' ), array( 'form-field' => 'email' ) );
} elseif ( ( $owner_id = email_exists($user->user_email) ) && ( !$update || ( $owner_id != $user->ID ) ) ) {
$errors->add( 'email_exists', __('<strong>ERROR</strong>: This email is already registered, please choose another one.'), array( 'form-field' => 'email' ) );
}
/**
* Fires before user profile update errors are returned.
*
* @since 2.8.0
*
* @param array &$errors An array of user profile update errors, passed by reference.
* @param bool $update Whether this is a user update.
* @param WP_User &$user WP_User object, passed by reference.
*/
do_action_ref_array( 'user_profile_update_errors', array( &$errors, $update, &$user ) );
if ( $errors->get_error_codes() )
return $errors;
if ( $update ) {
$user_id = wp_update_user( $user );
} else {
$user_id = wp_insert_user( $user );
wp_new_user_notification( $user_id, isset( $_POST['send_password'] ) ? wp_unslash( $pass1 ) : '' );
}
return $user_id;
}
/**
* Fetch a filtered list of user roles that the current user is
* allowed to edit.
*
* Simple function who's main purpose is to allow filtering of the
* list of roles in the $wp_roles object so that plugins can remove
* inappropriate ones depending on the situation or user making edits.
* Specifically because without filtering anyone with the edit_users
* capability can edit others to be administrators, even if they are
* only editors or authors. This filter allows admins to delegate
* user management.
*
* @since 2.8.0
*
* @return array
*/
function get_editable_roles() {
global $wp_roles;
$all_roles = $wp_roles->roles;
/**
* Filter the list of editable roles.
*
* @since 2.8.0
*
* @param array $all_roles List of roles.
*/
$editable_roles = apply_filters( 'editable_roles', $all_roles );
return $editable_roles;
}
/**
* Retrieve user data and filter it.
*
* @since 2.0.5
*
* @param int $user_id User ID.
* @return WP_User|bool WP_User object on success, false on failure.
*/
function get_user_to_edit( $user_id ) {
$user = get_userdata( $user_id );
if ( $user )
$user->filter = 'edit';
return $user;
}
/**
* Retrieve the user's drafts.
*
* @since 2.0.0
*
* @param int $user_id User ID.
* @return array
*/
function get_users_drafts( $user_id ) {
global $wpdb;
$query = $wpdb->prepare("SELECT ID, post_title FROM $wpdb->posts WHERE post_type = 'post' AND post_status = 'draft' AND post_author = %d ORDER BY post_modified DESC", $user_id);
/**
* Filter the user's drafts query string.
*
* @since 2.0.0
*
* @param string $query The user's drafts query string.
*/
$query = apply_filters( 'get_users_drafts', $query );
return $wpdb->get_results( $query );
}
/**
* Remove user and optionally reassign posts and links to another user.
*
* If the $reassign parameter is not assigned to a User ID, then all posts will
* be deleted of that user. The action 'delete_user' that is passed the User ID
* being deleted will be run after the posts are either reassigned or deleted.
* The user meta will also be deleted that are for that User ID.
*
* @since 2.0.0
*
* @param int $id User ID.
* @param int $reassign Optional. Reassign posts and links to new User ID.
* @return bool True when finished.
*/
function wp_delete_user( $id, $reassign = null ) {
global $wpdb;
$id = (int) $id;
$user = new WP_User( $id );
if ( !$user->exists() )
return false;
// Normalize $reassign to null or a user ID. 'novalue' was an older default.
if ( 'novalue' === $reassign ) {
$reassign = null;
} elseif ( null !== $reassign ) {
$reassign = (int) $reassign;
}
/**
* Fires immediately before a user is deleted from the database.
*
* @since 2.0.0
*
* @param int $id ID of the user to delete.
* @param int|null $reassign ID of the user to reassign posts and links to.
* Default null, for no reassignment.
*/
do_action( 'delete_user', $id, $reassign );
if ( null === $reassign ) {
$post_types_to_delete = array();
foreach ( get_post_types( array(), 'objects' ) as $post_type ) {
if ( $post_type->delete_with_user ) {
$post_types_to_delete[] = $post_type->name;
} elseif ( null === $post_type->delete_with_user && post_type_supports( $post_type->name, 'author' ) ) {
$post_types_to_delete[] = $post_type->name;
}
}
/**
* Filter the list of post types to delete with a user.
*
* @since 3.4.0
*
* @param array $post_types_to_delete Post types to delete.
* @param int $id User ID.
*/
$post_types_to_delete = apply_filters( 'post_types_to_delete_with_user', $post_types_to_delete, $id );
$post_types_to_delete = implode( "', '", $post_types_to_delete );
$post_ids = $wpdb->get_col( $wpdb->prepare( "SELECT ID FROM $wpdb->posts WHERE post_author = %d AND post_type IN ('$post_types_to_delete')", $id ) );
if ( $post_ids ) {
foreach ( $post_ids as $post_id )
wp_delete_post( $post_id );
}
// Clean links
$link_ids = $wpdb->get_col( $wpdb->prepare("SELECT link_id FROM $wpdb->links WHERE link_owner = %d", $id) );
if ( $link_ids ) {
foreach ( $link_ids as $link_id )
wp_delete_link($link_id);
}
} else {
$post_ids = $wpdb->get_col( $wpdb->prepare( "SELECT ID FROM $wpdb->posts WHERE post_author = %d", $id ) );
$wpdb->update( $wpdb->posts, array('post_author' => $reassign), array('post_author' => $id) );
if ( ! empty( $post_ids ) ) {
foreach ( $post_ids as $post_id )
clean_post_cache( $post_id );
}
$link_ids = $wpdb->get_col( $wpdb->prepare("SELECT link_id FROM $wpdb->links WHERE link_owner = %d", $id) );
$wpdb->update( $wpdb->links, array('link_owner' => $reassign), array('link_owner' => $id) );
if ( ! empty( $link_ids ) ) {
foreach ( $link_ids as $link_id )
clean_bookmark_cache( $link_id );
}
}
// FINALLY, delete user
if ( is_multisite() ) {
remove_user_from_blog( $id, get_current_blog_id() );
} else {
$meta = $wpdb->get_col( $wpdb->prepare( "SELECT umeta_id FROM $wpdb->usermeta WHERE user_id = %d", $id ) );
foreach ( $meta as $mid )
delete_metadata_by_mid( 'user', $mid );
$wpdb->delete( $wpdb->users, array( 'ID' => $id ) );
}
clean_user_cache( $user );
/**
* Fires immediately after a user is deleted from the database.
*
* @since 2.9.0
*
* @param int $id ID of the deleted user.
* @param int|null $reassign ID of the user to reassign posts and links to.
* Default null, for no reassignment.
*/
do_action( 'deleted_user', $id, $reassign );
return true;
}
/**
* Remove all capabilities from user.
*
* @since 2.1.0
*
* @param int $id User ID.
*/
function wp_revoke_user($id) {
$id = (int) $id;
$user = new WP_User($id);
$user->remove_all_caps();
}
add_action('admin_init', 'default_password_nag_handler');
/**
* @since 2.8.0
*/
function default_password_nag_handler($errors = false) {
global $user_ID;
// Short-circuit it.
if ( ! get_user_option('default_password_nag') )
return;
// get_user_setting = JS saved UI setting. else no-js-fallback code.
if ( 'hide' == get_user_setting('default_password_nag') || isset($_GET['default_password_nag']) && '0' == $_GET['default_password_nag'] ) {
delete_user_setting('default_password_nag');
update_user_option($user_ID, 'default_password_nag', false, true);
}
}
add_action('profile_update', 'default_password_nag_edit_user', 10, 2);
/**
* @since 2.8.0
*/
function default_password_nag_edit_user($user_ID, $old_data) {
// Short-circuit it.
if ( ! get_user_option('default_password_nag', $user_ID) )
return;
$new_data = get_userdata($user_ID);
// Remove the nag if the password has been changed.
if ( $new_data->user_pass != $old_data->user_pass ) {
delete_user_setting('default_password_nag');
update_user_option($user_ID, 'default_password_nag', false, true);
}
}
add_action('admin_notices', 'default_password_nag');
/**
* @since 2.8.0
*/
function default_password_nag() {
global $pagenow;
// Short-circuit it.
if ( 'profile.php' == $pagenow || ! get_user_option('default_password_nag') )
return;
echo '<div class="error default-password-nag">';
echo '<p>';
echo '<strong>' . __('Notice:') . '</strong> ';
_e('You’re using the auto-generated password for your account. Would you like to change it to something easier to remember?');
echo '</p><p>';
printf( '<a href="%s">' . __('Yes, take me to my profile page') . '</a> | ', get_edit_profile_url() . '#password' );
printf( '<a href="%s" id="default-password-nag-no">' . __('No thanks, do not remind me again') . '</a>', '?default_password_nag=0' );
echo '</p></div>';
}
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