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<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="utf-8">
<title>Source: includes/class-sensei-guest-user.php - Sensei LMS Hook Docs</title>
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<h1 class="page-title">Source: includes/class-sensei-guest-user.php</h1>
<section>
<article>
<pre class="prettyprint source linenums"><code><?php
/**
* Guest User
*
* Handles operations related to allowing guest users take a course.
*
* @package Sensei\Frontend
* @since 1.3.0
*/
if ( ! defined( 'ABSPATH' ) ) {
exit; // Exit if accessed directly.
}
/**
* Sensei Guest User Class.
*
* @author Automattic
*
* @since 4.11.0
* @package Core
*/
class Sensei_Guest_User {
/**
* Name of the Role for Guest Users.
*
* @since 4.11.0
*
* @var string
*/
const ROLE = 'guest_student';
/**
* Guest user login name prefix.
*
* @since 4.11.0
*
* @var string
*/
const LOGIN_PREFIX = 'sensei_guest_';
/**
* Email domain used for guest users.
*
* @since $$next-version$$
*
* @var string
*/
const EMAIL_DOMAIN = 'guest.senseilms';
/**
* Guest user id.
*
* @since 4.11.0
*
* @var int
*/
private $guest_user_id = 0;
/**
* Meta key for course open access setting.
*
* @since 4.11.0
*
* @var string
*/
const COURSE_OPEN_ACCESS_META = '_open_access';
/**
* List of actions to create a guest user for if the course is open access.
*
* @var array[] {
* @type string $field Form field.
* @type string $nonce Nonce field.
* @type bool $enrol Whether to enrol the guest user before this action.
* }
*/
protected $supported_actions = [
// Take course.
[
'field' => 'course_start',
'nonce' => 'woothemes_sensei_start_course_noonce',
'enrol' => false,
],
// Lesson complete.
[
'field' => 'quiz_action',
'nonce' => 'woothemes_sensei_complete_lesson_noonce',
'enrol' => true,
],
// Quiz complete.
[
'field' => 'quiz_complete',
'nonce' => 'woothemes_sensei_complete_quiz_nonce',
'enrol' => true,
],
// Quiz save.
[
'field' => 'quiz_save',
'nonce' => 'woothemes_sensei_save_quiz_nonce',
'enrol' => true,
],
// Quiz pagination. (Saves answers on the page).
[
'field' => 'quiz_target_page',
'nonce' => 'sensei_quiz_page_change_nonce',
'enrol' => true,
],
];
/**
* Sensei_Guest_User constructor.
*
* @since 4.11.0
*/
public function __construct() {
add_action( 'init', [ $this, 'log_guest_user_out_before_all_actions' ], 8 );
add_action( 'wp', [ $this, 'init' ], 1 );
}
/**
* Initialize guest user feature.
*
* @since 4.11.0
*/
public function init() {
/**
* Enable or disable 'open access course' feature.
*
* @hook sensei_feature_open_access_courses
* @since 4.11.0
*
* @param {bool} $enable Enable feature. Default true.
*
* @return {bool} Wether to enable feature.
*/
if ( ! apply_filters( 'sensei_feature_open_access_courses', true ) ) {
return;
}
add_action( 'wp', [ $this, 'log_in_guest_user_if_in_open_course' ], 8 );
add_action( 'wp', [ $this, 'create_guest_user_and_login_for_open_course' ], 9 );
add_action( 'sensei_is_enrolled', [ $this, 'open_course_always_enrolled' ], 10, 3 );
add_action( 'sensei_can_access_course_content', [ $this, 'open_course_enable_course_access' ], 10, 2 );
add_action( 'sensei_can_user_manually_enrol', [ $this, 'open_course_user_can_manualy_enroll' ], 10, 2 );
add_filter( 'sensei_send_emails', [ $this, 'skip_sensei_email' ] );
add_filter( 'pre_wp_mail', [ $this, 'skip_wp_mail' ], 10, 2 );
$this->create_guest_student_role_if_not_exists();
}
/**
* Log out the guest user before any action, some actions like Log in Form does not work if guest user is logged in
* even after setting current user to 0 by 'wp' hook.
*
* @since 4.11.0
*/
public function log_guest_user_out_before_all_actions() {
if (
is_user_logged_in() &&
$this->is_current_user_guest()
) {
$this->guest_user_id = get_current_user_id();
wp_set_current_user( 0 );
}
}
/**
* Filter enrolment check to always return true if the course is open access.
*
* @since 4.11.0
*
* @param bool $is_enrolled Initial value.
* @param int $user_id User ID. Unused.
* @param int $course_id Course ID.
*
* @return bool
*/
public function open_course_always_enrolled( $is_enrolled, $user_id, $course_id ) {
$in_course_content = is_singular( [ 'lesson', 'quiz' ] );
return ( $in_course_content && $this->is_course_open_access( $course_id ) ) ? true : $is_enrolled;
}
/**
* Filter manual enrolment check to always allow users to manually enrol if the course is open access.
*
* @since 4.11.0
*
* @param bool $can_enroll Initial value.
* @param int $course_id Course ID.
*
* @return bool
*/
public function open_course_user_can_manualy_enroll( $can_enroll, $course_id ) {
$is_user_enrolled = is_user_logged_in() && Sensei_Course::is_user_enrolled( $course_id, get_current_user_id() );
return $this->is_course_open_access( $course_id ) ? ! $is_user_enrolled : $can_enroll;
}
/**
* Filter course access check to always return true if the course is open access.
*
* @since 4.11.0
*
* @param bool $can_view_course_content Initial value.
* @param int $course_id Course ID.
*
* @return bool
*/
public function open_course_enable_course_access( $can_view_course_content, $course_id ) {
return $this->is_course_open_access( $course_id ) ? true : $can_view_course_content;
}
/**
* Create a guest user for open access courses if no user is logged in.
*
* @since 4.11.0
* @access private
*/
public function create_guest_user_and_login_for_open_course() {
global $post;
$course_id = Sensei_Utils::get_current_course();
if ( empty( $course_id ) || is_user_logged_in() || ! $this->is_course_open_access( $course_id ) || post_password_required( $post->ID ) ) {
return;
}
$current_action = $this->get_current_action();
// Conditionally create Guest Student user and set role for open course.
if ( $current_action ) {
$user_id = self::create_guest_user();
$this->login_user( $user_id );
$this->recreate_nonce( $current_action );
if ( $current_action['enrol'] ) {
$this->enrol_user( $user_id, $course_id );
}
}
}
/**
* Sets current guest user to none if out of open course context.
*
* @since 4.11.0
* @access private
*/
public function log_in_guest_user_if_in_open_course() {
if (
! is_user_logged_in() &&
$this->is_open_course_related_action() &&
$this->guest_user_id > 0
) {
wp_set_current_user( $this->guest_user_id );
}
}
/**
* Checks if the action is related to an open course or a lesson or a quiz that belongs to an open course.
*
* @since 4.11.0
* @access private
* @return boolean
*/
private function is_open_course_related_action() {
if ( ! is_singular( [ 'course', 'lesson', 'quiz' ] ) ) {
return false;
}
return $this->is_course_open_access( Sensei_Utils::get_current_course() );
}
/**
* Check if the course is open access.
*
* @param int $course_id ID of the course.
*
* @since 4.11.0
* @return boolean|mixed
*/
private function is_course_open_access( $course_id ) {
$is_open_access = get_post_meta( $course_id, self::COURSE_OPEN_ACCESS_META, true );
/**
* Filter if the given course has open access turned on.
*
* @hook sensei_course_open_access
* @since 4.11.0
*
* @param {bool} $is_open_access Open access setting value.
* @param {int} $course_id Course ID.
*
* @return {bool} Open access setting value.
*/
return apply_filters( 'sensei_course_open_access', $is_open_access, $course_id );
}
/**
* Checks if the current user is a guest.
*
* @since 4.11.0
* @access private
*/
private function is_current_user_guest() {
$user = wp_get_current_user();
return self::is_guest_user( $user );
}
/**
* Recreate nonce after logging in user invalidates existing one.
*
* @since 4.11.0
*
* @param array $action Action to recreate nonce for.
*/
private function recreate_nonce( $action ) {
$nonce = $action['nonce'];
$_POST[ $nonce ] = wp_create_nonce( $nonce );
}
/**
* Create a user with Guest Student role .
*
* @since 4.11.0
* @return int
*/
public static function create_guest_user() {
$user_count = Sensei_Utils::get_user_count_for_role( self::ROLE ) + 1;
$user_name = self::LOGIN_PREFIX . wp_rand( 10000000, 99999999 ) . '_' . $user_count;
return Sensei_Temporary_User::create_user(
[
'user_pass' => wp_generate_password(),
'user_login' => $user_name,
'user_email' => $user_name . '@' . self::EMAIL_DOMAIN,
'display_name' => 'Guest Student ' . str_pad( $user_count, 3, '0', STR_PAD_LEFT ),
'role' => self::ROLE,
]
);
}
/**
* Delete a guest user and remove their course progress.
*
* @param int $user_id User ID.
*
* @return void
*/
public static function delete_guest_user( $user_id ): void {
if ( ! $user_id || ! self::is_guest_user( $user_id ) ) {
return;
}
$course_ids = Sensei_Learner::instance()->get_enrolled_courses_query(
$user_id,
[
'posts_per_page' => -1,
'fields' => 'ids',
]
)->posts;
foreach ( $course_ids as $course_id ) {
Sensei_Utils::sensei_remove_user_from_course( $course_id, $user_id );
}
Sensei_Temporary_User::delete_user( $user_id );
}
/**
* Log a user in.
*
* @param int $user_id ID of the user.
*
* @since 4.11.0
*/
private function login_user( $user_id ) {
wp_set_current_user( $user_id );
wp_set_auth_cookie( $user_id, true );
}
/**
* Manually enrol the new user in the course.
*
* @since 4.11.0
*
* @param int $user_id User ID.
* @param int $course_id Course ID.
*/
private function enrol_user( $user_id, $course_id ) {
if ( ! Sensei_Course::can_current_user_manually_enrol( $course_id )
|| ! Sensei_Course::is_prerequisite_complete( $course_id ) ) {
return; // Error message?
}
$course_enrolment = Sensei_Course_Enrolment::get_course_instance( $course_id );
$course_enrolment->enrol( $user_id );
}
/**
* Create the Guest Student role if it does not exist.
*
* @since 4.11.0
*/
private function create_guest_student_role_if_not_exists() {
// Check if the Guest Student role exists.
$guest_role = get_role( self::ROLE );
// If Guest Student is not a valid WordPress role create it.
if ( ! is_a( $guest_role, 'WP_Role' ) ) {
// Create the role.
add_role( self::ROLE, __( 'Guest Student', 'sensei-lms' ) );
}
}
/**
* Determine if the current requests is for a supported action.
*
* @since 4.11.0
*
* @return string[]|null
*/
private function get_current_action() {
/**
* Filters the list of supported actions for Guest Users.
*
* @hook sensei_guest_user_supported_actions
* @since 4.11
*
* @param {array} List of supported actions for guest users.
*
* @return {array} List of supported actions for guest users.
*/
$supported_actions = apply_filters( 'sensei_guest_user_supported_actions', $this->supported_actions );
foreach ( $supported_actions as $action ) {
if ( $this->is_action( $action['field'], $action['nonce'] ) ) {
return $action;
}
}
return null;
}
/**
* Determines if the request is for an action submitting the given form field and nonce.
*
* @since 4.11.0
*
* @param string $field Form field name for the action.
* @param string $nonce Nonce name for the action.
*
* @return boolean
*/
private function is_action( $field, $nonce ) {
return isset( $_POST[ $field ] )
&& isset( $_POST[ $nonce ] )
&& wp_verify_nonce( wp_unslash( $_POST[ $nonce ] ), $nonce ); // phpcs:ignore WordPress.Security.ValidatedSanitizedInput.InputNotSanitized -- Nonce verification
}
/**
* Prevent Sensei emails related to guest user actions.
*
* @access private
* @since 4.11.0
*
* @param boolean $send_email Whether to send the email.
*
* @return boolean Whether to send the email.
*/
public function skip_sensei_email( $send_email ) {
return $this->is_current_user_guest() ? false : $send_email;
}
/**
* Prevent emails related to the guest user from being dispatched via wp_mail.
*
* @access private
* @since $$next-version$$
*
* @param bool|null $return Null if we should send the email, a boolean if not.
* @param array $atts Email attributes.
* @return bool|null Null if we should send the email, a boolean if not.
*/
public function skip_wp_mail( $return, $atts ) {
if ( $this->is_current_user_guest() ) {
// If this e-mail is being dispatched while the current user is a guest, just... don't send it.
return false;
}
if ( Sensei_Temporary_User::should_block_email( $atts, self::EMAIL_DOMAIN ) ) {
// If this e-mail is being dispatched to a guest user, don't send it.
return false;
}
return $return;
}
/**
* Check if the given user is a guest user.
*
* @param WP_User|int $user User object or ID.
*
* @return bool
*/
private static function is_guest_user( $user ): bool {
if ( is_numeric( $user ) ) {
$user = get_user_by( 'ID', $user );
}
return in_array( self::ROLE, (array) $user->roles, true );
}
}
</code></pre>
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