inactive-logout / core / ConcurrentLogin.php

ConcurrentLogin.php in Inactive Logout trunk, at core/ConcurrentLogin.php

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1	<?php
2
3	namespace Codemanas\InactiveLogout;
4
5	/**
6	* Core Functions for Concurrent Logins
7	*
8	* Derived from Prevent Concurrent Logins by Frankie Jarrett
9	*
10	* @since 1.1.0
11	*/
12	class ConcurrentLogin {
13
14	/**
15	* Inactive_Concurrent_Login_Functions constructor.
16	*/
17	public function __construct() {
18	add_action( 'wp_loaded', array( $this, 'concurrent_logins' ) );
19	// $this->concurrent_logins();
20	}
21
22	/**
23	* Detect if the current user has multiple sessions
24	*
25	* @return bool
26	* @since 1.1.0
27	*/
28	public function user_has_multiple_sessions() {
29	return ( is_user_logged_in() && count( wp_get_all_sessions() ) > 1 );
30	}
31
32	/**
33	* Get the user's current session array
34	*
35	* @return array
36	*/
37	public function get_current_session() {
38	$sessions = \WP_Session_Tokens::get_instance( get_current_user_id() );
39
40	return $sessions->get( wp_get_session_token() );
41	}
42
43	/**
44	* Only allow one session per user
45	*
46	* If the current user's session has been taken over by a newer
47	* session then we will destroy their session automattically and
48	* they will have to login again to continue.
49	*
50	* @action init
51	*/
52	public function concurrent_logins() {
53	if ( ! $this->user_has_multiple_sessions() ) {
54	return;
55	}
56
57	$user_id = get_current_user_id();
58
59	/**
60	* Filter to allow certain users to have concurrent sessions when necessary
61	*
62	* @param bool $prevent
63	* @param int $user_id ID of the current user
64	*
65	* @return bool
66	*/
67	if ( false === (bool) apply_filters( 'ina_allow_multiple_sessions', true, $user_id ) ) {
68	return;
69	}
70
71	/**
72	* Filter to limit number of concurrent users
73	*/
74	if ( false === (bool) apply_filters( 'ina_limit_logins_by_count', $user_id ) ) {
75	return;
76	}
77
78	// Finding maximum value of all sessions available.
79	$sessions = wp_get_all_sessions();
80	$newest = max( wp_list_pluck( $sessions, 'login' ) );
81	$session = $this->get_current_session();
82	if ( $session['login'] === $newest ) {
83	wp_destroy_other_sessions();
84
85	do_action( 'ina_otherSessionsLoggedOut', $user_id );
86	} else {
87	wp_destroy_current_session();
88
89	do_action( 'ina_currentSessionsLoggedOut', $user_id );
90	}
91	}
92
93	/**
94	* Instance property
95	*
96	* @var null
97	*/
98	private static $_instance = null;
99
100	/**
101	* Create only one instance so that it may not Repeat
102	*
103	* @since 1.0.0
104	*/
105	public static function getInstance() {
106	if ( is_null( self::$_instance ) ) {
107	self::$_instance = new self();
108	}
109
110	return self::$_instance;
111	}
112	}
113