<?php // phpcs:ignore

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/**

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* Zero Spam class for enhanced site protection.

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*

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* Handles the core functionality of interacting with the Zero Spam API,

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* managing site settings for spam prevention, and reporting detections.

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*

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* @package ZeroSpam

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*/

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namespace ZeroSpam\Modules;

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defined( 'ABSPATH' ) || exit; // Prevent direct access.

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/**

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* Core class for Zero Spam functionality.

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*/

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class Zero_Spam {

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/**

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* Class constructor.

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*

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* Adds necessary hooks for initialization.

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*/

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public function __construct() {

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add_action( 'init', [ $this, 'init' ] );

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}

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/**

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* Initialization.

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*

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* Fires after WordPress has finished loading but before any headers are sent.

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* Registers plugin filters and actions.

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*/

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public function init() {

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add_filter( 'zerospam_setting_sections', [ $this, 'sections' ] );

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add_filter( 'zerospam_settings', [ $this, 'settings' ], 10, 1 );

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add_action( 'zerospam_share_detection', [ $this, 'share_detection' ], 10, 1 );

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if (

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'enabled' === \ZeroSpam\Core\Settings::get_settings( 'zerospam' ) &&

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\ZeroSpam\Core\Access::process()

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) {

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add_filter( 'zerospam_access_checks', [ $this, 'access_check' ], 10, 2 );

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}

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}

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/**

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* Site access check.

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*

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* Determines if a visitor should be blocked based on the zerospam.org API query results.

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*

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* @param array $access_checks Existing access check results.

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* @param string $user_ip Visitor's IP address.

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* @return array Updated access checks with Zero Spam results.

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*/

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public function access_check( $access_checks, $user_ip ) {

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$settings = \ZeroSpam\Core\Settings::get_settings();

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$access_checks['zero_spam'] = [

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'blocked' => false,

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];

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$response = self::query( [ 'ip' => $user_ip ] );

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if ( $response && ! empty( $response['ip_addresses'][ $user_ip ] ) ) {

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$ip_data = $response['ip_addresses'][ $user_ip ];

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$min_confidence_score = (float) $settings['zerospam_confidence_min']['value'];

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if ( ! empty( $ip_data['confidence'] ) ) {

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$confidence_score = (float) $ip_data['confidence'] * 100;

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if ( $confidence_score >= $min_confidence_score ) {

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$access_checks['zero_spam']['blocked'] = true;

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$access_checks['zero_spam']['type'] = 'blocked';

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$access_checks['zero_spam']['details'] = $ip_data;

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}

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}

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}

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return $access_checks;

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}

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/**

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* Admin setting sections

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*

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* @param array $sections Array of admin setting sections.

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*/

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public function sections( $sections ) {

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$sections['zerospam'] = array(

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'title' => __( 'Enhanced Protection', 'zero-spam' ),

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'icon' => 'assets/img/icon.svg',

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);

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return $sections;

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}

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/**

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* Admin settings

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*

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* @param array $settings Array of available settings.

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*/

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public function settings( $settings ) {

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$options = get_option( 'zero-spam-zerospam' );

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$settings['zerospam'] = array(

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'title' => __( 'Status', 'zero-spam' ),

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'section' => 'zerospam',

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'module' => 'zerospam',

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'type' => 'checkbox',

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'options' => array(

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'enabled' => __( 'Enabled', 'zero-spam' ),

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),

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'desc' => sprintf(

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wp_kses(

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/* translators: %s: Replaced with the Zero Spam URL */

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__( 'Blocks visitor IPs &amp; supported submitted forms with an email address that meets the <a href="%s" target="_blank" rel="noopener noreferrer">Zero Spam</a> <em>Confidence Minimum</em> score.', 'zero-spam' ),

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array(

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'strong' => array(),

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'a' => array(

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'target' => array(),

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'href' => array(),

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'rel' => array(),

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),

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'em' => array(),

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)

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),

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esc_url( ZEROSPAM_URL )

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),

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'value' => ! empty( $options['zerospam'] ) ? $options['zerospam'] : false,

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'recommended' => 'enabled',

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);

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$settings['zerospam_license'] = array(

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'title' => __( 'License Key', 'zero-spam' ),

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'desc' => sprintf(

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wp_kses(

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/* translators: 1: the zerospam.org URL 2: the zerospam.org premium product URL */

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__( 'Enter your <a href="%1$s" target="_blank" rel="noopener noreferrer">Zero Spam</a> license key or define it in <code>wp-config.php</code>, using the constant <code>ZEROSPAM_LICENSE_KEY</code> to enable enhanced protection. Don\'t have an license key? <a href="%2$s" target="_blank" rel="noopener noreferrer"><strong>Get one now!</strong></a>', 'zero-spam' ),

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array(

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'strong' => array(),

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'a' => array(

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'target' => array(),

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'href' => array(),

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'rel' => array(),

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),

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'code' => array(),

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)

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),

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esc_url( ZEROSPAM_URL ),

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esc_url( ZEROSPAM_URL . 'product/premium/' )

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),

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'section' => 'zerospam',

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'module' => 'zerospam',

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'type' => 'text',

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'field_class' => 'regular-text',

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'placeholder' => __( 'Enter your Zero Spam license key.', 'zero-spam' ),

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'value' => ! empty( $options['zerospam_license'] ) ? $options['zerospam_license'] : false,

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);

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if ( defined( 'ZEROSPAM_LICENSE_KEY' ) && ! $settings['zerospam_license']['value'] ) {

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$settings['zerospam_license']['value'] = ZEROSPAM_LICENSE_KEY;

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}

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$settings['zerospam_timeout'] = array(

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'title' => __( 'API Timeout', 'zero-spam' ),

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'section' => 'zerospam',

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'module' => 'zerospam',

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'type' => 'number',

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'field_class' => 'small-text',

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'suffix' => __( 'seconds', 'zero-spam' ),

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'placeholder' => __( '5', 'zero-spam' ),

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'min' => 0,

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'desc' => __( 'Setting to high could result in degraded site performance, too low won\'t allow to API enough time to respond; recommended 5 seconds.', 'zero-spam' ),

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'value' => ! empty( $options['zerospam_timeout'] ) ? $options['zerospam_timeout'] : 5,

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'recommended' => 5,

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);

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$settings['zerospam_cache'] = array(

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'title' => __( 'Cache Expiration', 'zero-spam' ),

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'section' => 'zerospam',

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'module' => 'zerospam',

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'type' => 'number',

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'field_class' => 'small-text',

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'suffix' => __( 'day(s)', 'zero-spam' ),

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'placeholder' => WEEK_IN_SECONDS,

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'min' => 0,

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'desc' => __( 'Setting to high could result in outdated information, too low could cause a decrease in performance; recommended 14 days.', 'zero-spam' ),

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'value' => ! empty( $options['zerospam_cache'] ) ? $options['zerospam_cache'] : 14,

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'recommended' => 14,

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);

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$settings['zerospam_confidence_min'] = array(

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'title' => __( 'Confidence Minimum', 'zero-spam' ),

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'section' => 'zerospam',

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'module' => 'zerospam',

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'type' => 'number',

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'field_class' => 'small-text',

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'suffix' => __( '%', 'zero-spam' ),

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'placeholder' => __( '30', 'zero-spam' ),

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'min' => 0,

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'max' => 100,

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'step' => 0.1,

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'desc' => sprintf(

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wp_kses(

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/* translators: %s: Replaced with the Zero Spam API URL */

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__( 'Minimum <a href="%s" target="_blank" rel="noopener noreferrer">confidence score</a> an IP must meet before being blocked. Setting this too low could cause users to be blocked that shouldn\'t be; recommended 20%%.', 'zero-spam' ),

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array(

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'a' => array(

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'target' => array(),

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'href' => array(),

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'rel' => array(),

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),

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)

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),

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esc_url( ZEROSPAM_URL . 'spam-blacklist-api/?utm_source=' . site_url() . '&utm_medium=admin_confidence_score&utm_campaign=wpzerospam' )

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),

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'value' => ! empty( $options['zerospam_confidence_min'] ) ? $options['zerospam_confidence_min'] : 30,

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'recommended' => 30,

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);

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return $settings;

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}

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/**

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* Global API data.

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*/

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public function global_api_data() {

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$api_data = array();

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$api_data['reporter_email'] = sanitize_email( get_bloginfo( 'admin_email' ) );

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$api_data['app_key'] = \ZeroSpam\Core\Utilities::clean_domain( esc_url( site_url() ) );

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$api_data['app_type'] = 'WordPress';

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$api_data['app_details'] = array(

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'app_version' => sanitize_text_field( get_bloginfo( 'version' ) ),

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'app_type_version' => sanitize_text_field( ZEROSPAM_VERSION ),

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'app_language' => sanitize_text_field( strtolower( get_bloginfo( 'language' ) ) ),

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'app_email' => sanitize_email( get_bloginfo( 'admin_email' ) ),

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'app_name' => sanitize_text_field( get_bloginfo( 'name' ) ),

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'app_desc' => sanitize_text_field( get_bloginfo( 'description' ) ),

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);

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return $api_data;

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}

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/**

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* Shares detection details with zerospam.org.

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*

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* @param array $data Contains all detection details. Must include 'type' and may include 'failed'.

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* @return true|WP_Error True on success, WP_Error on failure.

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*/

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public function share_detection( $data ) {

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if ( ! is_array( $data ) || empty( $data['type'] ) ) {

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\ZeroSpam\Core\Utilities::log( __( 'Invalid or incomplete detection data provided.', 'zero-spam' ) );

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}

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$last_api_report_submitted = get_site_option( 'zero_spam_last_api_request' );

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if ( $last_api_report_submitted ) {

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$last_api_report_submitted = new \DateTime( $last_api_report_submitted );

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$current_time = new \DateTime();

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if ( $last_api_report_submitted->diff( $current_time )->i < 30 ) {

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\ZeroSpam\Core\Utilities::log( __( 'API requests are throttled to every 30 minutes.', 'zero-spam' ) );

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}

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}

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$endpoint = ZEROSPAM_URL . 'wp-json/v5.4/report/';

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$ip = \ZeroSpam\Core\User::get_ip();

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if ( ! $ip ) {

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\ZeroSpam\Core\Utilities::log( __( 'IP address retrieval failed.', 'zero-spam' ) );

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}

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$api_data = [

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'report_type' => 'ip_address',

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'report_module' => sanitize_text_field( $data['type'] ),

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'report_key' => sanitize_text_field( $ip ),

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'report_failed' => isset( $data['failed'] ) ? sanitize_text_field( $data['failed'] ) : '',

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];

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$global_data = self::global_api_data();

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$api_data = array_merge( $api_data, $global_data );

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$response = wp_remote_post( $endpoint, [ 'body' => [ 'data' => $api_data ] ] );

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if ( is_wp_error( $response ) ) {

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\ZeroSpam\Core\Utilities::log( __( 'API request failed.', 'zero-spam' ) );

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}

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// Process email fields.

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$valid_email_fields = [

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'comment_author_email', // Comments.

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'user_email', // Registration.

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'email', // WooCommerce Registration.

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'post' => [ // Mailchimp.

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'EMAIL',

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],

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'data' => [ // Give.

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'give_email',

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],

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];

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$valid_name_fields = [

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'comment_author', // Comment.

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'user_login', // Register.

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'username', // WooCommerce Registration.

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'data' => [ // Give.

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'give_first',

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'give_last',

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],

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];

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foreach ( $valid_email_fields as $key => $field ) {

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if ( is_array( $field ) ) {

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foreach ( $field as $f ) {

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if ( ! empty( $data[ $key ][ $f ] ) && \ZeroSpam\Core\Utilities::is_email( $data[ $key ][ $f ] ) ) {

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$email = sanitize_email( $data[ $key ][ $f ] );

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break 2; // Exit both loops.

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}

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}

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} elseif ( ! empty( $data[ $field ] ) && \ZeroSpam\Core\Utilities::is_email( $data[ $field ] ) ) {

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$email = sanitize_email( $data[ $field ] );

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break; // Exit the loop.

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}

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}

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if ( ! empty( $email ) ) {

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$report_details = [

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'report_type' => 'email_address',

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'report_module' => sanitize_text_field( $data['type'] ),

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'report_key' => $email,

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'report_failed' => isset( $data['failed'] ) ? sanitize_text_field( $data['failed'] ) : '',

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'email_details' => [

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'names' => [],

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'companies' => [],

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'titles' => [],

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'phones' => [],

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'locations' => [],

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],

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];

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foreach ( $valid_name_fields as $key => $field ) {

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if ( is_array( $field ) ) {

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$names = array_map(

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function ( $f ) use ( $data, $key ) {

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return ! empty( $data[ $key ][ $f ] ) ? sanitize_text_field( $data[ $key ][ $f ] ) : '';

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},

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$field

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);

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$names = array_filter( $names ); // Remove empty values.

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if ( $names ) {

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$report_details['email_details']['names'][] = implode( ' ', $names );

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}

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} elseif ( ! empty( $data[ $field ] ) ) {

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$report_details['email_details']['names'][] = sanitize_text_field( $data[ $field ] );

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}

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}

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// Append global data and submit the email report.

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$response = wp_remote_post( $endpoint, [ 'body' => [ 'data' => array_merge( $report_details, $global_data ) ] ] );

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if ( is_wp_error( $response ) ) {

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\ZeroSpam\Core\Utilities::log( __( 'Email report submission failed.', 'zero-spam' ) );

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}

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}

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// Successfully updated the last API request time.

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update_site_option( 'zero_spam_last_api_request', current_time( 'mysql' ) );

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return true;

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}

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/**

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* Returns license key data from the API

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*

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* @param string $license The license key.

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*/

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public static function get_license( $license ) {

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if ( strpos( $license, 'invalid' ) !== false ) {

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return false;

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}

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$cache_key = sanitize_title( 'license_' . $license );

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$license_data = wp_cache_get( $cache_key );

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if ( false === $license_data ) {

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$endpoint = ZEROSPAM_URL . 'wp-json/v1/get-license';

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$args = array(

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'body' => array( 'license_key' => $license ),

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);

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$license_data = \ZeroSpam\Core\Utilities::remote_post( $endpoint, $args );

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if ( $license_data ) {

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$license_data = json_decode( $license_data, true );

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if ( empty( $license_data['license_key'] ) ) {

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\ZeroSpam\Core\Utilities::log( 'Zero Spam License Check: ' . $license_data['response'] );

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}

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if ( ! empty( $license_data['license_key'] ) ) {

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$expiration = 1 * MONTH_IN_SECONDS;

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wp_cache_set( $cache_key, $license_data, 'zero_spam_store', $expiration );

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}

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}

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}

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return $license_data;

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}

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/**

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* Query the Zero Spam Blacklist API

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*

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* @param array $params Array of query parameters.

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*/

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public static function query( $params ) {

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if (

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empty( $params['ip'] ) &&

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empty( $params['email'] )

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) {

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return false;

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}

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$settings = \ZeroSpam\Core\Settings::get_settings();

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if ( empty( $settings['zerospam_license']['value'] ) ) {

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return false;

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}

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$cache_array = array( 'zero_spam' );

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$cache_array = array_merge( $cache_array, $params );

[422] Fix | Delete

$cache_key = \ZeroSpam\Core\Utilities::cache_key( $cache_array );

[423] Fix | Delete

[424] Fix | Delete

$response = wp_cache_get( $cache_key );

[425] Fix | Delete

if ( false === $response ) {

[426] Fix | Delete

// Limit the number of requests.

[427] Fix | Delete

$last_query_option = get_site_option( 'zero_spam_last_api_query', false );

[428] Fix | Delete

[429] Fix | Delete

if ( $last_query_option ) {

[430] Fix | Delete

list( $first_query_date, $num_queries) = explode( '*', $last_query_option );

[431] Fix | Delete

[432] Fix | Delete

if ( gmdate( 'Y-m-d', strtotime( $first_query_date ) ) !== gmdate( 'Y-m-d' ) ) {

[433] Fix | Delete

// New day.

[434] Fix | Delete

update_site_option( 'zero_spam_last_api_query', current_time( 'mysql' ) . '*1' );

[435] Fix | Delete

} elseif ( $num_queries > 200 ) {

[436] Fix | Delete

return false;

[437] Fix | Delete

} else {

[438] Fix | Delete

update_site_option( 'zero_spam_last_api_query', $first_query_date . '*' . ( $num_queries + 1 ) );

[439] Fix | Delete

}

[440] Fix | Delete

} else {

[441] Fix | Delete

update_site_option( 'zero_spam_last_api_query', $first_query_date . '*' . ( $num_queries + 1 ) );

[442] Fix | Delete

}

[443] Fix | Delete

[444] Fix | Delete

$endpoint = 'https://www.zerospam.org/wp-json/v2/query';

[445] Fix | Delete

[446] Fix | Delete

$args = array(

[447] Fix | Delete

'body' => array(

[448] Fix | Delete

'license_key' => $settings['zerospam_license']['value'],

[449] Fix | Delete

),

[450] Fix | Delete

);

[451] Fix | Delete

[452] Fix | Delete

if ( ! empty( $params['ip'] ) ) {

[453] Fix | Delete

$args['body']['ip'] = $params['ip'];

[454] Fix | Delete

}

[455] Fix | Delete

[456] Fix | Delete

if ( ! empty( $params['email'] ) ) {

[457] Fix | Delete

$args['body']['email'] = $params['email'];

[458] Fix | Delete

}

[459] Fix | Delete

[460] Fix | Delete

$args['timeout'] = 5;

[461] Fix | Delete

if ( ! empty( $settings['zerospam_timeout'] ) ) {

[462] Fix | Delete

$args['timeout'] = intval( $settings['zerospam_timeout']['value'] );

[463] Fix | Delete

}

[464] Fix | Delete

[465] Fix | Delete

$response = \ZeroSpam\Core\Utilities::remote_post( $endpoint, $args );

[466] Fix | Delete

if ( $response ) {

[467] Fix | Delete

// Response should be a JSON string.

[468] Fix | Delete

$response = json_decode( $response, true );

[469] Fix | Delete

[470] Fix | Delete

if (

[471] Fix | Delete

! is_array( $response ) ||

[472] Fix | Delete

empty( $response['status'] ) ||

[473] Fix | Delete

200 !== $response['status'] ||

[474] Fix | Delete

empty( $response['body_response'] )

[475] Fix | Delete

) {

[476] Fix | Delete

if ( ! empty( $response['response'] ) ) {

[477] Fix | Delete

\ZeroSpam\Core\Utilities::log( $response['response'] );

[478] Fix | Delete

} else {

[479] Fix | Delete

\ZeroSpam\Core\Utilities::log( __( 'There was a problem querying the Zero Spam Blacklist API.', 'zero-spam' ) );

[480] Fix | Delete

}

[481] Fix | Delete

[482] Fix | Delete

return false;

[483] Fix | Delete

}

[484] Fix | Delete

[485] Fix | Delete

$response = $response['body_response'];

[486] Fix | Delete

[487] Fix | Delete

$expiration = 14 * DAY_IN_SECONDS;

[488] Fix | Delete

if ( ! empty( $settings['zerospam_confidence_min']['value'] ) ) {

[489] Fix | Delete

$expiration = $settings['zerospam_confidence_min']['value'] * DAY_IN_SECONDS;

[490] Fix | Delete

}

[491] Fix | Delete

[492] Fix | Delete

wp_cache_set( $cache_key, $response, 'zerospam', $expiration );

[493] Fix | Delete

}

[494] Fix | Delete

}

[495] Fix | Delete

[496] Fix | Delete

return $response;

[497] Fix | Delete

}

[498] Fix | Delete

}

[499] Fix | Delete