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<?php
// exit if accessed directly
if ( ! defined( 'ABSPATH' ) )
exit;
/**
* Cookie Notice Modules AMP class.
*
* Compatibility since: 2.0.0
*
* @class Cookie_Notice_Modules_AMP
*/
class Cookie_Notice_Modules_AMP {
private $nonce = '';
/**
* Constructor.
*
* @return void
*/
public function __construct() {
$this->nonce = wp_create_nonce( 'cookie-compliance-amp-consent' );
add_action( 'init', [ $this, 'handle_iframe' ] );
add_action( 'wp_head', [ $this, 'load_amp_consent' ] );
}
/**
* Load AMP consent module.
*
* @return void
*/
public function load_amp_consent() {
// is banner allowed to display?
if ( ! Cookie_Notice()->frontend->maybe_display_banner( [ 'skip_amp' => true ] ) )
return;
if ( function_exists( 'amp_is_request' ) && amp_is_request() ) {
// load styles
echo '
<style amp-custom>
#cnConsentContainer {
background: none;
border: none;
box-shadow: none;
border-radius: 0;
height: 100vh;
width: 100%;
}
#cnConsentContainer amp-iframe {
height: 100vh;
width: 100%;
}
#cnConsentWidget {
height: 100vh;
width: 100%;
}
</style>';
// load scripts
echo '
<script async custom-element="amp-script" src="https://cdn.ampproject.org/v0/amp-script-0.1.js"></script>
<script async custom-element="amp-consent" src="https://cdn.ampproject.org/v0/amp-consent-0.1.js"></script>
<script async custom-element="amp-iframe" src="https://cdn.ampproject.org/v0/amp-iframe-0.1.js"></script>';
// get iframe url
$url = apply_filters( 'cn_cookie_compliance_amp_iframe_url', $this->add_subdomain_to_url( get_site_url(), 'www' ) );
// load consent iframe
echo '
<amp-consent id="cnConsentContainer" layout="nodisplay">
<script type="application/json">
{
"consentInstanceId": "cnConsent",
"consentRequired": true,
"purposeConsentRequired": [ "basic_operations", "content_personalization", "site_optimization", "ad_personalization" ],
"promptUI": "cnConsentWidget"
}
</script>
<div id="cnConsentWidget">
<amp-iframe layout="fill" sandbox="allow-scripts allow-same-origin" src="' . esc_url( $url . '/?cn-amp-consent-iframe=' . $this->nonce ) . '">
<div placeholder></div>
</amp-iframe>
</div>
</amp-consent>';
}
}
/**
* Add subdomain to url.
*
* @param string $url
* @param string $subdomain
* @return string
*/
public function add_subdomain_to_url( $url, $subdomain ) {
// parse url
$parts = parse_url( $url );
// subdomain does not exist?
if ( substr( $parts['host'], 0, strlen( $subdomain ) + 1 ) !== $subdomain . '.' ) {
// find host
$pos = strpos( $url, $parts['host'] );
// update url and add subdomain
$url = substr_replace( $url, $subdomain . '.' . $parts['host'], $pos, strlen( $parts['host'] ) );
}
return $url;
}
/**
* Generate consent iframe.
*
* @return void
*/
public function handle_iframe() {
if ( isset( $_GET['cn-amp-consent-iframe'] ) && $_GET['cn-amp-consent-iframe'] === $this->nonce ) {
wp_ob_end_flush_all();
// display iframe
echo $this->generate_iframe_html();
exit;
}
}
/**
* Generate consent iframe.
*
* @return string
*/
public function generate_iframe_html() {
// get main instance
$cn = Cookie_Notice();
// get options
$options = $cn->frontend->get_cc_options();
// get output
$cc_output = $cn->frontend->get_cc_output( $options );
// get allowed html for cookie compliance html output
$allowed_html = array_merge(
wp_kses_allowed_html( 'post' ),
[
'script' => [
'type' => true,
'src' => true
]
]
);
$html = '
<!DOCTYPE html>
<html ' . get_language_attributes( 'html' ) . '>
<head>
<meta charset="' . esc_attr( get_bloginfo( 'charset', 'display' ) ) . '">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<meta name="robots" content="noindex">
<title>' . esc_html__( 'Cookie Compliance AMP Consent', 'cookie-notice' ) . '</title>
' . wp_kses( $cc_output, $allowed_html ) . '
<script type="text/javascript" src="' . esc_url( COOKIE_NOTICE_URL . '/includes/modules/amp/iframe.js' ) . '"></script>
</head>
<body></body>
</html>';
return $html;
}
}
new Cookie_Notice_Modules_AMP();