class-email-address-obfuscator.php — Admin and Site Enhancements (ASE) 7.8.1

admin-site-enhancements / classes / class-email-address-obfuscator.php

admin-site-enhancements / classes Last commit date

class-email-address-obfuscator.php

81 lines

1	<?php
2
3	namespace ASENHA\Classes;
4
5	/**
6	* Class for Email Address Obfuscator module
7	*
8	* @since 6.9.5
9	*/
10	class Email_Address_Obfuscator {
11	/**
12	* Obfuscate email address on the frontend using antispambot() native WP function
13	*
14	* @link: https://gist.github.com/eclarrrk/349360b52e8822b69cb6fc499722520f
15	* @since 5.5.0
16	*/
17	public function obfuscate_string( $atts ) {
18	$atts = shortcode_atts( array(
19	'email' => '',
20	'subject' => '',
21	'text' => '',
22	'display' => 'newline',
23	'link' => 'no',
24	'class' => '',
25	), $atts );
26	$email = $atts['email'];
27	if ( !is_email( $email ) ) {
28	return;
29	}
30	// Reverse email address characters if not in Firefox, which has bug related to unicode-bidi CSS property
31	$http_user_agent = ( isset( $_SERVER['HTTP_USER_AGENT'] ) ? sanitize_text_field( $_SERVER['HTTP_USER_AGENT'] ) : 'generic' );
32	if ( false !== stripos( $http_user_agent, 'firefox' ) \|\| false !== stripos( $http_user_agent, 'iphone' ) ) {
33	// Do nothing. Do not reverse characters.
34	$email_reversed = $email;
35	$email_rev_parts = explode( '@', $email_reversed );
36	$email_rev_parts = array($email_rev_parts[0], $email_rev_parts[1]);
37	$css_bidi_styles = '';
38	$direction_styles = 'direction:rtl;';
39	} else {
40	$email_reversed = strrev( $email );
41	$email_rev_parts = explode( '@', $email_reversed );
42	$css_bidi_styles = 'unicode-bidi:bidi-override;';
43	$direction_styles = 'direction:rtl;';
44	}
45	if ( !empty( $atts['text'] ) ) {
46	$text = esc_html( $atts['text'] );
47	$css_bidi_styles = '';
48	$direction_styles = '';
49	} else {
50	$random_number = dechex( rand( 1000000, 9999999 ) );
51	$text = esc_html( $email_rev_parts[0] ) . '<span style="display:none;">obfsctd-' . esc_html( $random_number ) . '</span>@' . esc_html( $email_rev_parts[1] );
52	}
53	$display = $atts['display'];
54	if ( 'newline' == $display ) {
55	$display_css = 'display:flex;justify-content:flex-end;';
56	} elseif ( 'inline' == $display ) {
57	$display_css = 'display:inline;';
58	}
59	$subject = $atts['subject'];
60	if ( !empty( $subject ) ) {
61	$subject = '?subject=' . $subject;
62	}
63	$link = $atts['link'];
64	$class = $atts['class'];
65	return '<span style="' . esc_attr( $display_css ) . esc_attr( $css_bidi_styles ) . esc_attr( $direction_styles ) . '" class="' . esc_attr( $class ) . '">' . $text . '</span>';
66	}
67
68	/**
69	* Add additional attributes to the list of safe CSS attributes
70	* This prevents those attributes from being stripped out when displaying the obfuscated email address
71	*
72	* @since 7.3.1
73	*/
74	public function add_additional_attributes_to_safe_css( $css_attributes ) {
75	$css_attributes[] = 'display';
76	$css_attributes[] = 'unicode-bidi';
77	return $css_attributes;
78	}
79
80	}
81