formidable / classes / controllers / FrmAntiSpamController.php

FrmAntiSpamController.php in Formidable Forms – WordPress Form Builder for Contact Forms, Calculators, Quizzes & More 6.21, at classes/controllers/FrmAntiSpamController.php

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1	<?php
2	/**
3	* Anti-spam controller
4	*
5	* @package Formidable
6	* @since 6.21
7	*/
8
9	if ( ! defined( 'ABSPATH' ) ) {
10	die( 'You are not allowed to call this page directly.' );
11	}
12
13	class FrmAntiSpamController {
14
15	/**
16	* Checks if given entry values is spam.
17	*
18	* @param array $values Entry values.
19	*
20	* @return bool\|string Return spam message if is spam or `false` if is not spam.
21	*/
22	public static function is_spam( $values ) {
23	$methods = array(
24	'contains_wp_disallowed_words',
25	'is_denylist_spam',
26	'is_stopforumspam_spam',
27	'is_wp_comment_spam',
28	);
29
30	foreach ( $methods as $method ) {
31	if ( ! is_callable( array( __CLASS__, $method ) ) ) {
32	continue;
33	}
34
35	$is_spam = call_user_func( array( __CLASS__, $method ), $values );
36	if ( $is_spam ) {
37	return $is_spam;
38	}
39	}
40
41	return false;
42	}
43
44	/**
45	* Checks spam using stopforumspam API.
46	*
47	* @param array $values Entry values.
48	*
49	* @return bool\|string Return spam message if is spam or `false` if is not spam.
50	*/
51	private static function is_stopforumspam_spam( $values ) {
52	$spam_check = new FrmSpamCheckStopForumSpam( $values );
53	return $spam_check->is_spam();
54	}
55
56	/**
57	* Checks spam using WordPress spam comments.
58	*
59	* @param array $values Entry values.
60	*
61	* @return bool\|string Return spam message if is spam or `false` if is not spam.
62	*/
63	private static function is_wp_comment_spam( $values ) {
64	$spam_check = new FrmSpamCheckUseWPComments( $values );
65	return $spam_check->is_spam();
66	}
67
68	/**
69	* Checks spam using WordPress disallowed words.
70	*
71	* @param array $values Entry values.
72	*
73	* @return bool\|string Return spam message if is spam or `false` if is not spam.
74	*/
75	public static function contains_wp_disallowed_words( $values ) {
76	$spam_check = new FrmSpamCheckWPDisallowedWords( $values );
77	return $spam_check->is_spam();
78	}
79
80	/**
81	* Checks spam using denylist.
82	*
83	* @param array $values Entry values.
84	*
85	* @return bool\|string Return spam message if is spam or `false` if is not spam.
86	*/
87	public static function is_denylist_spam( $values ) {
88	$spam_check = new FrmSpamCheckDenylist( $values );
89	return $spam_check->is_spam();
90	}
91
92	/**
93	* Gets spam message.
94	*
95	* @return string
96	*/
97	public static function get_default_spam_message() {
98	return __( 'Your entry appears to be spam!', 'formidable' );
99	}
100
101	/**
102	* Extracts email addresses from values.
103	*
104	* @param array $values Values to check.
105	* @return string[]
106	*/
107	public static function extract_emails_from_values( $values ) {
108	$values = FrmAppHelper::maybe_json_encode( $values );
109	preg_match_all( '/[\._a-zA-Z0-9-]+@[\._a-zA-Z0-9-]+/i', $values, $matches );
110	return $matches[0];
111	}
112
113	/**
114	* Gets allowed IP addresses.
115	*
116	* @return string[]
117	*/
118	public static function get_allowed_ips() {
119	/**
120	* Filter the allowed IP addresses.
121	*
122	* @since 6.21
123	*
124	* @params string[] $allowed_ips Allowed IP addresses.
125	*/
126	return apply_filters( 'frm_allowed_ips', array( '', '127.0.0.1', '::1' ) );
127	}
128	}
129