class-email-address-obfuscator.php — Admin and Site Enhancements (ASE) 7.4.2

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

admin-site-enhancements / classes Last commit date

class-email-address-obfuscator.php

70 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	'display' => 'newline',
22	'link' => 'no',
23	'class' => '',
24	), $atts );
25	$email = $atts['email'];
26	if ( !is_email( $email ) ) {
27	return;
28	}
29	// Reverse email address characters if not in Firefox, which has bug related to unicode-bidi CSS property
30	$http_user_agent = ( isset( $_SERVER['HTTP_USER_AGENT'] ) ? sanitize_text_field( $_SERVER['HTTP_USER_AGENT'] ) : 'generic' );
31	if ( false !== stripos( $http_user_agent, 'firefox' ) ) {
32	// Do nothing. Do not reverse characters.
33	$email_reversed = $email;
34	$email_rev_parts = explode( '@', $email_reversed );
35	$email_rev_parts = array($email_rev_parts[0], $email_rev_parts[1]);
36	$css_bidi_styles = '';
37	} else {
38	$email_reversed = strrev( $email );
39	$email_rev_parts = explode( '@', $email_reversed );
40	$css_bidi_styles = 'unicode-bidi:bidi-override;';
41	}
42	$display = $atts['display'];
43	if ( 'newline' == $display ) {
44	$display_css = 'display:flex;justify-content:flex-end;';
45	} elseif ( 'inline' == $display ) {
46	$display_css = 'display:inline;';
47	}
48	$subject = $atts['subject'];
49	if ( !empty( $subject ) ) {
50	$subject = '?subject=' . $subject;
51	}
52	$link = $atts['link'];
53	$class = $atts['class'];
54	return '<span style="' . esc_attr( $display_css ) . esc_attr( $css_bidi_styles ) . ';direction:rtl;" class="' . esc_attr( $class ) . '">' . esc_html( $email_rev_parts[0] ) . '<span style="display:none;">obfsctd</span>@' . esc_html( $email_rev_parts[1] ) . '</span>';
55	}
56
57	/**
58	* Add additional attributes to the list of safe CSS attributes
59	* This prevents those attributes from being stripped out when displaying the obfuscated email address
60	*
61	* @since 7.3.1
62	*/
63	public function add_additional_attributes_to_safe_css( $css_attributes ) {
64	$css_attributes[] = 'display';
65	$css_attributes[] = 'unicode-bidi';
66	return $css_attributes;
67	}
68
69	}
70