sessions_helper.php — LatePoint – Calendar Booking Plugin for Appointments and Events trunk

latepoint / lib / helpers / sessions_helper.php

latepoint / lib / helpers Last commit date

sessions_helper.php

122 lines

1	<?php
2
3	class OsSessionsHelper {
4
5	private static $logged_in_customer_id = false;
6
7	public static function setcookie( $name, $value, $expire = 0, $secure = false, $httponly = false ) {
8	if ( ! headers_sent() ) {
9	setcookie( $name, $value, $expire, COOKIEPATH ? COOKIEPATH : '/', COOKIE_DOMAIN, $secure, $httponly );
10	} elseif ( class_exists( 'Constants' ) && Constants::is_true( 'WP_DEBUG' ) ) {
11	headers_sent( $file, $line );
12	trigger_error( "{$name} cookie cannot be set - headers already sent by {$file} on line {$line}", E_USER_NOTICE ); // @codingStandardsIgnoreLine
13	}
14	}
15
16	public static function get_customer_session_cookie() {
17	if ( isset( $_COOKIE[ LATEPOINT_CUSTOMER_LOGGED_IN_COOKIE ] ) ) {
18	return sanitize_text_field( wp_unslash( $_COOKIE[ LATEPOINT_CUSTOMER_LOGGED_IN_COOKIE ] ) );
19	} else {
20	return false;
21	}
22	}
23
24	/**
25	* Generate secure, per-customer session token
26	*
27	* Uses WordPress auth salts + customer ID + installation seed for unique tokens
28	* Prevents session forgery by ensuring each customer has unpredictable token
29	*
30	* @since 5.1.0 Security fix for hardcoded session token
31	* @param int $customer_id Customer ID
32	* @return string Cryptographically secure token
33	*/
34	public static function get_customer_token( $customer_id ) {
35	// Validate customer_id (prevent injection)
36	$customer_id = absint( $customer_id );
37
38	if ( ! $customer_id ) {
39	return ''; // Fail safely for invalid IDs
40	}
41
42	return wp_hash( 'latepoint\|' . $customer_id );
43	}
44
45	public static function set_customer_session_cookie( $session, $expiration, $token ) {
46	$to_hash = $session->id . '\|' . $session->hash . '\|' . $expiration . '\|' . $token;
47	// If ext/hash is not present, compat.php's hash_hmac() does not support sha256.
48	$algo = function_exists( 'hash' ) ? 'sha256' : 'sha1';
49	$cookie_hash = hash_hmac( $algo, $to_hash, wp_hash( $to_hash ) );
50	$cookie_value = $session->id . '\|\|' . $expiration . '\|\|' . $cookie_hash;
51
52	if ( ! isset( $_COOKIE[ LATEPOINT_CUSTOMER_LOGGED_IN_COOKIE ] ) \|\| $_COOKIE[ LATEPOINT_CUSTOMER_LOGGED_IN_COOKIE ] !== $cookie_value ) {
53	self::setcookie( LATEPOINT_CUSTOMER_LOGGED_IN_COOKIE, $cookie_value );
54	}
55	}
56
57	public static function get_customer_id_from_session() {
58	if ( self::$logged_in_customer_id ) {
59	return self::$logged_in_customer_id;
60	}
61	$cookie = self::get_customer_session_cookie();
62	if ( ! $cookie ) {
63	return false;
64	}
65	list($session_id, $expiration, $cookie_hash) = explode( '\|\|', $cookie );
66	if ( ! isset( $session_id ) \|\| ! is_numeric( $session_id ) \|\| ! isset( $expiration ) \|\| ! isset( $cookie_hash ) ) {
67	return false;
68	}
69	$session = new OsSessionModel( $session_id );
70	if ( ! $session ) {
71	return false;
72	}
73
74	$token = self::get_customer_token( $session->session_key );
75
76	$to_hash = $session->id . '\|' . $session->hash . '\|' . $expiration . '\|' . $token;
77
78	$algo = function_exists( 'hash' ) ? 'sha256' : 'sha1';
79	$control_hash = hash_hmac( $algo, $to_hash, wp_hash( $to_hash ) );
80	// check if the cookie was altered by malicious user
81	if ( ! hash_equals( $control_hash, $cookie_hash ) ) {
82	OsAuthHelper::logout_customer();
83	self::destroy_customer_session_cookie();
84	return false;
85	} else {
86	self::$logged_in_customer_id = $session->session_key;
87	return self::$logged_in_customer_id;
88	}
89	}
90
91	public static function start_or_use_session_for_customer( $customer_id ) {
92	// find existing session for the customer
93	$session_model = new OsSessionModel();
94	$session = $session_model->where( [ 'session_key' => $customer_id ] )->set_limit( 1 )->get_results_as_models();
95	$token = self::get_customer_token( $customer_id );
96	if ( $session ) {
97	// expired session, renew
98	if ( $session->expiration < time() ) {
99	$session->expiration = time() + 2 * DAY_IN_SECONDS;
100	$session->save();
101	}
102	} else {
103	$session = new OsSessionModel();
104	$session->session_key = $customer_id;
105	$session->expiration = time() + 2 * DAY_IN_SECONDS;
106	$session->session_value = maybe_serialize( [] );
107	$session->hash = wp_generate_password( 20, false, false );
108	$session->save();
109	}
110	self::set_customer_session_cookie( $session, $session->expiration, $token );
111	self::$logged_in_customer_id = $customer_id;
112	}
113
114	public static function destroy_customer_session_cookie() {
115	self::$logged_in_customer_id = false;
116	if ( isset( $_COOKIE[ LATEPOINT_CUSTOMER_LOGGED_IN_COOKIE ] ) ) {
117	unset( $_COOKIE[ LATEPOINT_CUSTOMER_LOGGED_IN_COOKIE ] );
118	setcookie( LATEPOINT_CUSTOMER_LOGGED_IN_COOKIE, '', time() - 3600, COOKIEPATH ? COOKIEPATH : '/', COOKIE_DOMAIN );
119	}
120	}
121	}
122