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<?php /** * Class Fraud_Risk_Tools * * @package WooCommerce\Payments\Fraud_Risk_Tools / namespace WCPay\Fraud_Prevention; require_once __DIR__ . '/models/class-check.php'; require_once __DIR__ . '/models/class-rule.php'; use WC_Payments; use WC_Payments_Account; use WC_Payments_Features; use WCPay\Fraud_Prevention\Models\Check; use WCPay\Fraud_Prevention\Models\Rule; use WCPay\Constants\Currency_Code; defined( 'ABSPATH' ) \|\| exit; /* * Class that controls Fraud and Risk tools functionality. / class Fraud_Risk_Tools { /* * The single instance of the class. * * @var ?Fraud_Risk_Tools / protected static $instance = null; /* * Instance of WC_Payments_Account. * * @var WC_Payments_Account / private $payments_account; /* * Main Fraud_Risk_Tools Instance. * * Ensures only one instance of Fraud_Risk_Tools is loaded or can be loaded. * * @static * @return Fraud_Risk_Tools - Main instance. / public static function instance() { if ( is_null( self::$instance ) ) { self::$instance = new self( WC_Payments::get_account_service() ); self::$instance->init_hooks(); } return self::$instance; } // Rule names. const RULE_ADDRESS_MISMATCH = 'address_mismatch'; const RULE_INTERNATIONAL_IP_ADDRESS = 'international_ip_address'; const RULE_IP_ADDRESS_MISMATCH = 'ip_address_mismatch'; const RULE_ORDER_ITEMS_THRESHOLD = 'order_items_threshold'; const RULE_PURCHASE_PRICE_THRESHOLD = 'purchase_price_threshold'; /* * Class constructor. * * @param WC_Payments_Account $payments_account WC_Payments_Account instance. / public function __construct( WC_Payments_Account $payments_account ) { $this->payments_account = $payments_account; } /* * Initializes this class's WP hooks. * * @return void / public function init_hooks() { if ( is_admin() && current_user_can( 'manage_woocommerce' ) ) { add_action( 'admin_menu', [ $this, 'init_advanced_settings_page' ] ); } } /* * Initialize the Fraud & Risk Tools Advanced Settings Page. * * @return void / public function init_advanced_settings_page() { // Settings page generation on the incoming CLI and async job calls. if ( ( defined( 'WP_CLI' ) && WP_CLI ) \|\| ( defined( 'WPCOM_JOBS' ) && WPCOM_JOBS ) ) { return; } if ( ! $this->payments_account->is_stripe_account_valid() ) { return; } if ( ! function_exists( 'wc_admin_register_page' ) ) { return; } wc_admin_register_page( [ 'id' => 'wc-payments-fraud-protection', 'title' => __( 'Fraud protection', 'woocommerce-payments' ), 'parent' => 'wc-payments', 'path' => '/payments/fraud-protection', 'nav_args' => [ 'parent' => 'wc-payments', 'order' => 50, ], ] ); remove_submenu_page( 'wc-admin&path=/payments/overview', 'wc-admin&path=/payments/fraud-protection' ); } /* * Returns the basic protection rules. * * @return array / public static function get_basic_protection_settings() { $rules = []; return self::get_ruleset_array( $rules ); } /* * Validates the array to see if it's a valid ruleset. * * @param array $array The array to validate. * * @return bool Whether if the given array is a ruleset, or not. / public static function is_valid_ruleset_array( array $array ) { foreach ( $array as $rule ) { if ( ! Rule::validate_array( $rule ) ) { return false; } } return true; } /* * Returns the international IP address rule. * * @return Rule International IP address rule object. / public static function get_international_ip_address_rule() { return new Rule( self::RULE_INTERNATIONAL_IP_ADDRESS, WC_Payments_Features::is_frt_review_feature_active() ? Rule::FRAUD_OUTCOME_REVIEW : Rule::FRAUD_OUTCOME_BLOCK, Check::check( 'ip_country', self::get_selling_locations_type_operator(), self::get_selling_locations_string() ) ); } /* * Returns the standard protection rules. * * @return array / public static function get_standard_protection_settings() { $rules = [ // REVIEW An order originates from an IP address outside your country. self::get_international_ip_address_rule(), // REVIEW An order exceeds $1,000.00 or 10 items. new Rule( self::RULE_ORDER_ITEMS_THRESHOLD, WC_Payments_Features::is_frt_review_feature_active() ? Rule::FRAUD_OUTCOME_REVIEW : Rule::FRAUD_OUTCOME_BLOCK, Check::check( 'item_count', Check::OPERATOR_GT, 10 ) ), // REVIEW An order exceeds $1,000.00 or 10 items. new Rule( self::RULE_PURCHASE_PRICE_THRESHOLD, WC_Payments_Features::is_frt_review_feature_active() ? Rule::FRAUD_OUTCOME_REVIEW : Rule::FRAUD_OUTCOME_BLOCK, Check::check( 'order_total', Check::OPERATOR_GT, self::get_formatted_converted_amount( 1000 100, strtolower( Currency_Code::UNITED_STATES_DOLLAR ) ) ) ), // REVIEW An order is originated from a different country than the shipping country. new Rule( self::RULE_IP_ADDRESS_MISMATCH, WC_Payments_Features::is_frt_review_feature_active() ? Rule::FRAUD_OUTCOME_REVIEW : Rule::FRAUD_OUTCOME_BLOCK, Check::check( 'ip_billing_country_same', Check::OPERATOR_EQUALS, false ) ), ]; return self::get_ruleset_array( $rules ); } /** * Returns the default protection settings. * * @return array / public static function get_high_protection_settings() { $rules = [ // BLOCK An order originates from an IP address outside your country. new Rule( self::RULE_INTERNATIONAL_IP_ADDRESS, Rule::FRAUD_OUTCOME_BLOCK, Check::check( 'ip_country', self::get_selling_locations_type_operator(), self::get_selling_locations_string() ) ), // BLOCK An order exceeds $1,000.00. new Rule( self::RULE_PURCHASE_PRICE_THRESHOLD, Rule::FRAUD_OUTCOME_BLOCK, Check::check( 'order_total', Check::OPERATOR_GT, self::get_formatted_converted_amount( 1000 100, strtolower( Currency_Code::UNITED_STATES_DOLLAR ) ) ) ), // REVIEW An order has less than 2 items or more than 10 items. new Rule( self::RULE_ORDER_ITEMS_THRESHOLD, WC_Payments_Features::is_frt_review_feature_active() ? Rule::FRAUD_OUTCOME_REVIEW : Rule::FRAUD_OUTCOME_BLOCK, Check::list( Check::LIST_OPERATOR_OR, [ Check::check( 'item_count', Check::OPERATOR_LT, 2 ), Check::check( 'item_count', Check::OPERATOR_GT, 10 ), ] ) ), // REVIEW The shipping and billing address don't match. new Rule( self::RULE_ADDRESS_MISMATCH, WC_Payments_Features::is_frt_review_feature_active() ? Rule::FRAUD_OUTCOME_REVIEW : Rule::FRAUD_OUTCOME_BLOCK, Check::check( 'billing_shipping_address_same', Check::OPERATOR_EQUALS, false ) ), // REVIEW An order is originated from a different country than the shipping country. new Rule( self::RULE_IP_ADDRESS_MISMATCH, WC_Payments_Features::is_frt_review_feature_active() ? Rule::FRAUD_OUTCOME_REVIEW : Rule::FRAUD_OUTCOME_BLOCK, Check::check( 'ip_billing_country_same', Check::OPERATOR_EQUALS, false ) ), ]; return self::get_ruleset_array( $rules ); } /** * Returns the matching predef for a given ruleset array, if nothing matches, returns "advanced". * * @param array $fraud_ruleset The ruleset config to match to. * * @return string The matching protection level. / public static function get_matching_protection_level( $fraud_ruleset ) { // Check if the ruleset contains the basic protection config. $target_ruleset = self::get_basic_protection_settings(); if ( $target_ruleset === $fraud_ruleset ) { return 'basic'; } // Check if the ruleset contains the standard protection config. $target_ruleset = self::get_standard_protection_settings(); if ( $target_ruleset === $fraud_ruleset ) { return 'standard'; } // Check if the ruleset contains the high protection config. $target_ruleset = self::get_high_protection_settings(); if ( $target_ruleset === $fraud_ruleset ) { return 'high'; } // The ruleset contains custom configuration. return 'advanced'; } /* * Returns the array representation of ruleset. * * @param array $array The array of Rule objects. * * @return array / private static function get_ruleset_array( $array ) { return array_map( function ( Rule $rule ) { return $rule->to_array(); }, $array ); } /* * Returns the check operator for international checks according to the WC Core selling locations setting. * * @return string The related operator. / private static function get_selling_locations_type_operator() { $selling_locations_type = get_option( 'woocommerce_allowed_countries', 'all' ); if ( 'specific' === $selling_locations_type ) { return Check::OPERATOR_NOT_IN; } return Check::OPERATOR_IN; } /* * Returns the countries to sell to, or not, as a \| delimited string array. * * @return string The array imploded with \| character. / private static function get_selling_locations_string() { $selling_locations_type = get_option( 'woocommerce_allowed_countries', 'all' ); switch ( $selling_locations_type ) { case 'specific': return strtolower( implode( '\|', get_option( 'woocommerce_specific_allowed_countries', [] ) ) ); case 'all_except': return strtolower( implode( '\|', get_option( 'woocommerce_all_except_countries', [] ) ) ); case 'all': return ''; default: return ''; } } /* * Returns the converted amount from a given currency to the default currency. * * @param int $amount The amount to be converted. * @param string $from The currency to be converted from. * @param string $to The currency to be converted to. * * @return int / private static function get_converted_amount( $amount, $from, $to ) { $to_currency = strtoupper( $to ); $from_currency = strtoupper( $from ); $enabled_currencies = WC_Payments_Multi_Currency()->get_enabled_currencies(); if ( empty( $enabled_currencies ) \|\| $to_currency === $from_currency ) { return $amount; } if ( array_key_exists( $from_currency, $enabled_currencies ) ) { $currency = $enabled_currencies[ $from_currency ]; $amount = (int) round( $amount ( 1 / (float) $currency->get_rate() ) ); } return $amount; } /** * Returns the formatted converted amount from a given currency to the default currency. * The final format is "AMOUNT\|CURRENCY". * * @param int $amount The amount to be converted. * @param string $base_currency The currency to be converted from. * * @return string */ private static function get_formatted_converted_amount( $amount, $base_currency ) { $default_currency = $base_currency; $target_currency = $base_currency; if ( function_exists( 'WC_Payments_Multi_Currency' ) ) { $default_currency = WC_Payments_Multi_Currency()->get_default_currency(); if ( ! empty( $default_currency ) ) { $target_currency = $default_currency->get_code(); $amount = self::get_converted_amount( $amount, $base_currency, $target_currency ); } } return implode( '\|', [ $amount, strtolower( $target_currency ) ] ); } }

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