/var/www/html/wp-content/plugins/woocommerce/includes/gateways/paypal/class-wc-gateway-paypal.php


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<?php
/**
 * PayPal Standard Payment Gateway.
 *
 * Provides a PayPal Standard Payment Gateway.
 *
 * @class       WC_Gateway_Paypal
 * @extends     WC_Payment_Gateway
 * @version     2.3.0
 * @package     WooCommerce\Classes\Payment
 */

use Automattic\Jetpack\Constants;

if ( ! 
defined'ABSPATH' ) ) {
    exit;
}

/**
 * WC_Gateway_Paypal Class.
 */
class WC_Gateway_Paypal extends WC_Payment_Gateway {

    
/**
     * Unique ID for this gateway.
     *
     * @var string
     */
    
const ID 'paypal';

    
/**
     * Whether or not logging is enabled
     *
     * @var bool
     */
    
public static $log_enabled false;

    
/**
     * Logger instance
     *
     * @var WC_Logger
     */
    
public static $log false;

    
/**
     * Whether the test mode is enabled.
     *
     * @var bool
     */
    
public $testmode;

    
/**
     * Whether the debug mode is enabled.
     *
     * @var bool
     */
    
public $debug;

    
/**
     * Email address to send payments to.
     *
     * @var string
     */
    
public $email;

    
/**
     * Receiver email.
     *
     * @var string
     */
    
public $receiver_email;

    
/**
     * Identity token.
     *
     * @var string
     */
    
public $identity_token;


    
/**
     * Constructor for the gateway.
     */
    
public function __construct() {
        
$this->id                self::ID;
        
$this->has_fields        false;
        
$this->order_button_text __'Proceed to PayPal''woocommerce' );
        
$this->method_title      __'PayPal Standard''woocommerce' );
        
/* translators: %s: Link to WC system status page */
        
$this->method_description __'PayPal Standard redirects customers to PayPal to enter their payment information.''woocommerce' );
        
$this->supports           = array(
            
'products',
            
'refunds',
        );

        
// Load the settings.
        
$this->init_form_fields();
        
$this->init_settings();

        
// Define user set variables.
        
$this->title          $this->get_option'title' );
        
$this->description    $this->get_option'description' );
        
$this->testmode       'yes' === $this->get_option'testmode''no' );
        
$this->debug          'yes' === $this->get_option'debug''no' );
        
$this->email          $this->get_option'email' );
        
$this->receiver_email $this->get_option'receiver_email'$this->email );
        
$this->identity_token $this->get_option'identity_token' );
        
self::$log_enabled    $this->debug;

        if ( 
$this->testmode ) {
            
/* translators: %s: Link to PayPal sandbox testing guide page */
            
$this->description .= ' ' sprintf__'SANDBOX ENABLED. You can use sandbox testing accounts only. See the <a href="%s">PayPal Sandbox Testing Guide</a> for more details.''woocommerce' ), 'https://developer.paypal.com/docs/classic/lifecycle/ug_sandbox/' );
            
$this->description  trim$this->description );
        }

        
// Actions.
        
add_action'woocommerce_update_options_payment_gateways_' $this->id, array( $this'process_admin_options' ) );
        
add_action'woocommerce_order_status_processing', array( $this'capture_payment' ) );
        
add_action'woocommerce_order_status_completed', array( $this'capture_payment' ) );
        
add_action'admin_enqueue_scripts', array( $this'admin_scripts' ) );

        if ( ! 
$this->is_valid_for_use() ) {
            
$this->enabled 'no';
        } else {
            include_once 
dirname__FILE__ ) . '/includes/class-wc-gateway-paypal-ipn-handler.php';
            new 
WC_Gateway_Paypal_IPN_Handler$this->testmode$this->receiver_email );

            if ( 
$this->identity_token ) {
                include_once 
dirname__FILE__ ) . '/includes/class-wc-gateway-paypal-pdt-handler.php';
                
$pdt_handler = new WC_Gateway_Paypal_PDT_Handler$this->testmode$this->identity_token );
                
$pdt_handler->set_receiver_email$this->receiver_email );
            }
        }

        if ( 
'yes' === $this->enabled ) {
            
add_filter'woocommerce_thankyou_order_received_text', array( $this'order_received_text' ), 10);
        }
    }

    
/**
     * Return whether or not this gateway still requires setup to function.
     *
     * When this gateway is toggled on via AJAX, if this returns true a
     * redirect will occur to the settings page instead.
     *
     * @since 3.4.0
     * @return bool
     */
    
public function needs_setup() {
        return ! 
is_email$this->email );
    }

    
/**
     * Logging method.
     *
     * @param string $message Log message.
     * @param string $level Optional. Default 'info'. Possible values:
     *                      emergency|alert|critical|error|warning|notice|info|debug.
     */
    
public static function log$message$level 'info' ) {
        if ( 
self::$log_enabled ) {
            if ( empty( 
self::$log ) ) {
                
self::$log wc_get_logger();
            }
            
self::$log->log$level$message, array( 'source' => self::ID ) );
        }
    }

    
/**
     * Processes and saves options.
     * If there is an error thrown, will continue to save and validate fields, but will leave the erroring field out.
     *
     * @return bool was anything saved?
     */
    
public function process_admin_options() {
        
$saved parent::process_admin_options();

        
// Maybe clear logs.
        
if ( 'yes' !== $this->get_option'debug''no' ) ) {
            if ( empty( 
self::$log ) ) {
                
self::$log wc_get_logger();
            }
            
self::$log->clearself::ID );
        }

        return 
$saved;
    }

    
/**
     * Get gateway icon.
     *
     * @return string
     */
    
public function get_icon() {
        
// We need a base country for the link to work, bail if in the unlikely event no country is set.
        
$base_country WC()->countries->get_base_country();
        if ( empty( 
$base_country ) ) {
            return 
'';
        }
        
$icon_html '';
        
$icon      = (array) $this->get_icon_image$base_country );

        foreach ( 
$icon as $i ) {
            
$icon_html .= '<img src="' esc_attr$i ) . '" alt="' esc_attr__'PayPal acceptance mark''woocommerce' ) . '" />';
        }

        
$icon_html .= sprintf'<a href="%1$s" class="about_paypal" onclick="javascript:window.open(\'%1$s\',\'WIPaypal\',\'toolbar=no, location=no, directories=no, status=no, menubar=no, scrollbars=yes, resizable=yes, width=1060, height=700\'); return false;">' esc_attr__'What is PayPal?''woocommerce' ) . '</a>'esc_url$this->get_icon_url$base_country ) ) );

        return 
apply_filters'woocommerce_gateway_icon'$icon_html$this->id );
    }

    
/**
     * Get the link for an icon based on country.
     *
     * @param  string $country Country two letter code.
     * @return string
     */
    
protected function get_icon_url$country ) {
        
$url           'https://www.paypal.com/' strtolower$country );
        
$home_counties = array( 'BE''CZ''DK''HU''IT''JP''NL''NO''ES''SE''TR''IN' );
        
$countries     = array( 'DZ''AU''BH''BQ''BW''CA''CN''CW''FI''FR''DE''GR''HK''ID''JO''KE''KW''LU''MY''MA''OM''PH''PL''PT''QA''IE''RU''BL''SX''MF''SA''SG''SK''KR''SS''TW''TH''AE''GB''US''VN' );

        if ( 
in_array$country$home_countiestrue ) ) {
            return 
$url '/webapps/mpp/home';
        } elseif ( 
in_array$country$countriestrue ) ) {
            return 
$url '/webapps/mpp/paypal-popup';
        } else {
            return 
$url '/cgi-bin/webscr?cmd=xpt/Marketing/general/WIPaypal-outside';
        }
    }

    
/**
     * Get PayPal images for a country.
     *
     * @param string $country Country code.
     * @return array of image URLs
     */
    
protected function get_icon_image$country ) {
        switch ( 
$country ) {
            case 
'US':
            case 
'NZ':
            case 
'CZ':
            case 
'HU':
            case 
'MY':
                
$icon 'https://www.paypalobjects.com/webstatic/mktg/logo/AM_mc_vs_dc_ae.jpg';
                break;
            case 
'TR':
                
$icon 'https://www.paypalobjects.com/webstatic/mktg/logo-center/logo_paypal_odeme_secenekleri.jpg';
                break;
            case 
'GB':
                
$icon 'https://www.paypalobjects.com/webstatic/mktg/Logo/AM_mc_vs_ms_ae_UK.png';
                break;
            case 
'MX':
                
$icon = array(
                    
'https://www.paypal.com/es_XC/Marketing/i/banner/paypal_visa_mastercard_amex.png',
                    
'https://www.paypal.com/es_XC/Marketing/i/banner/paypal_debit_card_275x60.gif',
                );
                break;
            case 
'FR':
                
$icon 'https://www.paypalobjects.com/webstatic/mktg/logo-center/logo_paypal_moyens_paiement_fr.jpg';
                break;
            case 
'AU':
                
$icon 'https://www.paypalobjects.com/webstatic/en_AU/mktg/logo/Solutions-graphics-1-184x80.jpg';
                break;
            case 
'DK':
                
$icon 'https://www.paypalobjects.com/webstatic/mktg/logo-center/logo_PayPal_betalingsmuligheder_dk.jpg';
                break;
            case 
'RU':
                
$icon 'https://www.paypalobjects.com/webstatic/ru_RU/mktg/business/pages/logo-center/AM_mc_vs_dc_ae.jpg';
                break;
            case 
'NO':
                
$icon 'https://www.paypalobjects.com/webstatic/mktg/logo-center/banner_pl_just_pp_319x110.jpg';
                break;
            case 
'CA':
                
$icon 'https://www.paypalobjects.com/webstatic/en_CA/mktg/logo-image/AM_mc_vs_dc_ae.jpg';
                break;
            case 
'HK':
                
$icon 'https://www.paypalobjects.com/webstatic/en_HK/mktg/logo/AM_mc_vs_dc_ae.jpg';
                break;
            case 
'SG':
                
$icon 'https://www.paypalobjects.com/webstatic/en_SG/mktg/Logos/AM_mc_vs_dc_ae.jpg';
                break;
            case 
'TW':
                
$icon 'https://www.paypalobjects.com/webstatic/en_TW/mktg/logos/AM_mc_vs_dc_ae.jpg';
                break;
            case 
'TH':
                
$icon 'https://www.paypalobjects.com/webstatic/en_TH/mktg/Logos/AM_mc_vs_dc_ae.jpg';
                break;
            case 
'JP':
                
$icon 'https://www.paypal.com/ja_JP/JP/i/bnr/horizontal_solution_4_jcb.gif';
                break;
            case 
'IN':
                
$icon 'https://www.paypalobjects.com/webstatic/mktg/logo/AM_mc_vs_dc_ae.jpg';
                break;
            default:
                
$icon WC_HTTPS::force_https_urlWC()->plugin_url() . '/includes/gateways/paypal/assets/images/paypal.png' );
                break;
        }
        return 
apply_filters'woocommerce_paypal_icon'$icon );
    }

    
/**
     * Check if this gateway is available in the user's country based on currency.
     *
     * @return bool
     */
    
public function is_valid_for_use() {
        return 
in_array(
            
get_woocommerce_currency(),
            
apply_filters(
                
'woocommerce_paypal_supported_currencies',
                array( 
'AUD''BRL''CAD''MXN''NZD''HKD''SGD''USD''EUR''JPY''TRY''NOK''CZK''DKK''HUF''ILS''MYR''PHP''PLN''SEK''CHF''TWD''THB''GBP''RMB''RUB''INR' )
            ),
            
true
        
);
    }

    
/**
     * Admin Panel Options.
     * - Options for bits like 'title' and availability on a country-by-country basis.
     *
     * @since 1.0.0
     */
    
public function admin_options() {
        if ( 
$this->is_valid_for_use() ) {
            
parent::admin_options();
        } else {
            
?>
            <div class="inline error">
                <p>
                    <strong><?php esc_html_e'Gateway disabled''woocommerce' ); ?></strong>: <?php esc_html_e'PayPal Standard does not support your store currency.''woocommerce' ); ?>
                </p>
            </div>
            <?php
        
}
    }

    
/**
     * Initialise Gateway Settings Form Fields.
     */
    
public function init_form_fields() {
        
$this->form_fields = include __DIR__ '/includes/settings-paypal.php';
    }

    
/**
     * Get the transaction URL.
     *
     * @param  WC_Order $order Order object.
     * @return string
     */
    
public function get_transaction_url$order ) {
        if ( 
$this->testmode ) {
            
$this->view_transaction_url 'https://www.sandbox.paypal.com/cgi-bin/webscr?cmd=_view-a-trans&id=%s';
        } else {
            
$this->view_transaction_url 'https://www.paypal.com/cgi-bin/webscr?cmd=_view-a-trans&id=%s';
        }
        return 
parent::get_transaction_url$order );
    }

    
/**
     * Process the payment and return the result.
     *
     * @param  int $order_id Order ID.
     * @return array
     */
    
public function process_payment$order_id ) {
        include_once 
dirname__FILE__ ) . '/includes/class-wc-gateway-paypal-request.php';

        
$order          wc_get_order$order_id );
        
$paypal_request = new WC_Gateway_Paypal_Request$this );

        return array(
            
'result'   => 'success',
            
'redirect' => $paypal_request->get_request_url$order$this->testmode ),
        );
    }

    
/**
     * Can the order be refunded via PayPal?
     *
     * @param  WC_Order $order Order object.
     * @return bool
     */
    
public function can_refund_order$order ) {
        
$has_api_creds false;

        if ( 
$this->testmode ) {
            
$has_api_creds $this->get_option'sandbox_api_username' ) && $this->get_option'sandbox_api_password' ) && $this->get_option'sandbox_api_signature' );
        } else {
            
$has_api_creds $this->get_option'api_username' ) && $this->get_option'api_password' ) && $this->get_option'api_signature' );
        }

        return 
$order && $order->get_transaction_id() && $has_api_creds;
    }

    
/**
     * Init the API class and set the username/password etc.
     */
    
protected function init_api() {
        include_once 
dirname__FILE__ ) . '/includes/class-wc-gateway-paypal-api-handler.php';

        
WC_Gateway_Paypal_API_Handler::$api_username  $this->testmode $this->get_option'sandbox_api_username' ) : $this->get_option'api_username' );
        
WC_Gateway_Paypal_API_Handler::$api_password  $this->testmode $this->get_option'sandbox_api_password' ) : $this->get_option'api_password' );
        
WC_Gateway_Paypal_API_Handler::$api_signature $this->testmode $this->get_option'sandbox_api_signature' ) : $this->get_option'api_signature' );
        
WC_Gateway_Paypal_API_Handler::$sandbox       $this->testmode;
    }

    
/**
     * Process a refund if supported.
     *
     * @param  int    $order_id Order ID.
     * @param  float  $amount Refund amount.
     * @param  string $reason Refund reason.
     * @return bool|WP_Error
     */
    
public function process_refund$order_id$amount null$reason '' ) {
        
$order wc_get_order$order_id );

        if ( ! 
$this->can_refund_order$order ) ) {
            return new 
WP_Error'error'__'Refund failed.''woocommerce' ) );
        }

        
$this->init_api();

        
$result WC_Gateway_Paypal_API_Handler::refund_transaction$order$amount$reason );

        if ( 
is_wp_error$result ) ) {
            static::
log'Refund Failed: ' $result->get_error_message(), 'error' );
            return new 
WP_Error'error'$result->get_error_message() );
        }

        static::
log'Refund Result: ' wc_print_r$resulttrue ) );

        switch ( 
strtolower$result->ACK ) ) { // phpcs:ignore WordPress.NamingConventions.ValidVariableName.UsedPropertyNotSnakeCase
            
case 'success':
            case 
'successwithwarning':
                
$order->add_order_note(
                    
/* translators: 1: Refund amount, 2: Refund ID */
                    
sprintf__'Refunded %1$s - Refund ID: %2$s''woocommerce' ), $result->GROSSREFUNDAMT$result->REFUNDTRANSACTIONID // phpcs:ignore WordPress.NamingConventions.ValidVariableName.UsedPropertyNotSnakeCase
                
);
                return 
true;
        }

        return isset( 
$result->L_LONGMESSAGE0 ) ? new WP_Error'error'$result->L_LONGMESSAGE0 ) : false// phpcs:ignore WordPress.NamingConventions.ValidVariableName.UsedPropertyNotSnakeCase
    
}

    
/**
     * Capture payment when the order is changed from on-hold to complete or processing
     *
     * @param  int $order_id Order ID.
     */
    
public function capture_payment$order_id ) {
        
$order wc_get_order$order_id );

        if ( 
self::ID === $order->get_payment_method() && 'pending' === $order->get_meta'_paypal_status'true ) && $order->get_transaction_id() ) {
            
$this->init_api();
            
$result WC_Gateway_Paypal_API_Handler::do_capture$order );

            if ( 
is_wp_error$result ) ) {
                static::
log'Capture Failed: ' $result->get_error_message(), 'error' );
                
/* translators: %s: Paypal gateway error message */
                
$order->add_order_notesprintf__'Payment could not be captured: %s''woocommerce' ), $result->get_error_message() ) );
                return;
            }

            static::
log'Capture Result: ' wc_print_r$resulttrue ) );

            
// phpcs:disable WordPress.NamingConventions.ValidVariableName.UsedPropertyNotSnakeCase
            
if ( ! empty( $result->PAYMENTSTATUS ) ) {
                switch ( 
$result->PAYMENTSTATUS ) {
                    case 
'Completed':
                        
/* translators: 1: Amount, 2: Authorization ID, 3: Transaction ID */
                        
$order->add_order_notesprintf__'Payment of %1$s was captured - Auth ID: %2$s, Transaction ID: %3$s''woocommerce' ), $result->AMT$result->AUTHORIZATIONID$result->TRANSACTIONID ) );
                        
$order->update_meta_data'_paypal_status'$result->PAYMENTSTATUS );
                        
$order->set_transaction_id$result->TRANSACTIONID );
                        
$order->save();
                        break;
                    default:
                        
/* translators: 1: Authorization ID, 2: Payment status */
                        
$order->add_order_notesprintf__'Payment could not be captured - Auth ID: %1$s, Status: %2$s''woocommerce' ), $result->AUTHORIZATIONID$result->PAYMENTSTATUS ) );
                        break;
                }
            }
            
// phpcs:enable
        
}
    }

    
/**
     * Load admin scripts.
     *
     * @since 3.3.0
     */
    
public function admin_scripts() {
        
$screen    get_current_screen();
        
$screen_id $screen $screen->id '';

        if ( 
'woocommerce_page_wc-settings' !== $screen_id ) {
            return;
        }

        
$suffix  Constants::is_true'SCRIPT_DEBUG' ) ? '' '.min';
        
$version Constants::get_constant'WC_VERSION' );

        
wp_enqueue_script'woocommerce_paypal_admin'WC()->plugin_url() . '/includes/gateways/paypal/assets/js/paypal-admin' $suffix '.js', array(), $versiontrue );
    }

    
/**
     * Custom PayPal order received text.
     *
     * @since 3.9.0
     * @param string   $text Default text.
     * @param WC_Order $order Order data.
     * @return string
     */
    
public function order_received_text$text$order ) {
        if ( 
$order && $this->id === $order->get_payment_method() ) {
            return 
esc_html__'Thank you for your payment. Your transaction has been completed, and a receipt for your purchase has been emailed to you. Log into your PayPal account to view transaction details.''woocommerce' );
        }

        return 
$text;
    }

    
/**
     * Determines whether PayPal Standard should be loaded or not.
     *
     * By default PayPal Standard isn't loaded on new installs or on existing sites which haven't set up the gateway.
     *
     * @since 5.5.0
     *
     * @return bool Whether PayPal Standard should be loaded.
     */
    
public function should_load() {
        
$option_key  '_should_load';
        
$should_load $this->get_option$option_key );

        if ( 
'' === $should_load ) {
            
// Set default `_should_load` to 'yes' on existing stores with PayPal Standard enabled or with existing PayPal Standard orders.
            
$should_load 'yes' === $this->enabled || $this->has_paypal_orders();

            
$this->update_option$option_keywc_bool_to_string$should_load ) );
        } else {
            
// Enabled always takes precedence over the option.
            
$should_load wc_string_to_bool$this->enabled ) || wc_string_to_bool$should_load );
        }

        return 
$should_load;
    }

    
/**
     * Checks if the store has at least one PayPal Standand order.
     *
     * @return bool
     */
    
public function has_paypal_orders() {
        
$paypal_orders wc_get_orders(
            array(
                
'limit'          => 1,
                
'return'         => 'ids',
                
'payment_method' => self::ID,
            )
        );

        return 
is_countable$paypal_orders ) ? === count$paypal_orders ) : false;
    }
}