389 lines
14 KiB
PHP
389 lines
14 KiB
PHP
<?php
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/**
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* Handles responses from PayPal IPN.
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*
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* @package WooCommerce/PayPal
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* @version 3.3.0
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*/
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if ( ! defined( 'ABSPATH' ) ) {
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exit;
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}
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require_once dirname( __FILE__ ) . '/class-wc-gateway-paypal-response.php';
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/**
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* WC_Gateway_Paypal_IPN_Handler class.
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*/
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class WC_Gateway_Paypal_IPN_Handler extends WC_Gateway_Paypal_Response {
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/**
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* Receiver email address to validate.
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*
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* @var string Receiver email address.
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*/
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protected $receiver_email;
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/**
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* Constructor.
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*
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* @param bool $sandbox Use sandbox or not.
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* @param string $receiver_email Email to receive IPN from.
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*/
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public function __construct( $sandbox = false, $receiver_email = '' ) {
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add_action( 'woocommerce_api_wc_gateway_paypal', array( $this, 'check_response' ) );
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add_action( 'valid-paypal-standard-ipn-request', array( $this, 'valid_response' ) );
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$this->receiver_email = $receiver_email;
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$this->sandbox = $sandbox;
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}
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/**
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* Check for PayPal IPN Response.
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*/
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public function check_response() {
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if ( ! empty( $_POST ) && $this->validate_ipn() ) { // WPCS: CSRF ok.
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$posted = wp_unslash( $_POST ); // WPCS: CSRF ok, input var ok.
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// @codingStandardsIgnoreStart
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do_action( 'valid-paypal-standard-ipn-request', $posted );
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// @codingStandardsIgnoreEnd
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exit;
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}
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wp_die( 'PayPal IPN Request Failure', 'PayPal IPN', array( 'response' => 500 ) );
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}
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/**
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* There was a valid response.
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*
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* @param array $posted Post data after wp_unslash.
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*/
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public function valid_response( $posted ) {
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$order = ! empty( $posted['custom'] ) ? $this->get_paypal_order( $posted['custom'] ) : false;
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if ( $order ) {
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// Lowercase returned variables.
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$posted['payment_status'] = strtolower( $posted['payment_status'] );
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WC_Gateway_Paypal::log( 'Found order #' . $order->get_id() );
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WC_Gateway_Paypal::log( 'Payment status: ' . $posted['payment_status'] );
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if ( method_exists( $this, 'payment_status_' . $posted['payment_status'] ) ) {
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call_user_func( array( $this, 'payment_status_' . $posted['payment_status'] ), $order, $posted );
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}
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}
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}
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/**
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* Check PayPal IPN validity.
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*/
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public function validate_ipn() {
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WC_Gateway_Paypal::log( 'Checking IPN response is valid' );
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// Get received values from post data.
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$validate_ipn = wp_unslash( $_POST ); // WPCS: CSRF ok, input var ok.
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$validate_ipn['cmd'] = '_notify-validate';
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// Send back post vars to paypal.
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$params = array(
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'body' => $validate_ipn,
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'timeout' => 60,
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'httpversion' => '1.1',
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'compress' => false,
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'decompress' => false,
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'user-agent' => 'WooCommerce/' . WC()->version,
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);
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// Post back to get a response.
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$response = wp_safe_remote_post( $this->sandbox ? 'https://www.sandbox.paypal.com/cgi-bin/webscr' : 'https://www.paypal.com/cgi-bin/webscr', $params );
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WC_Gateway_Paypal::log( 'IPN Request: ' . wc_print_r( $params, true ) );
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WC_Gateway_Paypal::log( 'IPN Response: ' . wc_print_r( $response, true ) );
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// Check to see if the request was valid.
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if ( ! is_wp_error( $response ) && $response['response']['code'] >= 200 && $response['response']['code'] < 300 && strstr( $response['body'], 'VERIFIED' ) ) {
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WC_Gateway_Paypal::log( 'Received valid response from PayPal' );
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return true;
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}
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WC_Gateway_Paypal::log( 'Received invalid response from PayPal' );
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if ( is_wp_error( $response ) ) {
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WC_Gateway_Paypal::log( 'Error response: ' . $response->get_error_message() );
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}
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return false;
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}
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/**
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* Check for a valid transaction type.
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*
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* @param string $txn_type Transaction type.
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*/
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protected function validate_transaction_type( $txn_type ) {
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$accepted_types = array( 'cart', 'instant', 'express_checkout', 'web_accept', 'masspay', 'send_money', 'paypal_here' );
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if ( ! in_array( strtolower( $txn_type ), $accepted_types, true ) ) {
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WC_Gateway_Paypal::log( 'Aborting, Invalid type:' . $txn_type );
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exit;
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}
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}
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/**
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* Check currency from IPN matches the order.
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*
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* @param WC_Order $order Order object.
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* @param string $currency Currency code.
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*/
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protected function validate_currency( $order, $currency ) {
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if ( $order->get_currency() !== $currency ) {
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WC_Gateway_Paypal::log( 'Payment error: Currencies do not match (sent "' . $order->get_currency() . '" | returned "' . $currency . '")' );
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/* translators: %s: currency code. */
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$order->update_status( 'on-hold', sprintf( __( 'Validation error: PayPal currencies do not match (code %s).', 'woocommerce' ), $currency ) );
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exit;
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}
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}
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/**
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* Check payment amount from IPN matches the order.
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*
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* @param WC_Order $order Order object.
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* @param int $amount Amount to validate.
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*/
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protected function validate_amount( $order, $amount ) {
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if ( number_format( $order->get_total(), 2, '.', '' ) !== number_format( $amount, 2, '.', '' ) ) {
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WC_Gateway_Paypal::log( 'Payment error: Amounts do not match (gross ' . $amount . ')' );
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/* translators: %s: Amount. */
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$order->update_status( 'on-hold', sprintf( __( 'Validation error: PayPal amounts do not match (gross %s).', 'woocommerce' ), $amount ) );
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exit;
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}
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}
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/**
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* Check receiver email from PayPal. If the receiver email in the IPN is different than what is stored in.
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* WooCommerce -> Settings -> Checkout -> PayPal, it will log an error about it.
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*
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* @param WC_Order $order Order object.
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* @param string $receiver_email Email to validate.
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*/
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protected function validate_receiver_email( $order, $receiver_email ) {
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if ( strcasecmp( trim( $receiver_email ), trim( $this->receiver_email ) ) !== 0 ) {
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WC_Gateway_Paypal::log( "IPN Response is for another account: {$receiver_email}. Your email is {$this->receiver_email}" );
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/* translators: %s: email address . */
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$order->update_status( 'on-hold', sprintf( __( 'Validation error: PayPal IPN response from a different email address (%s).', 'woocommerce' ), $receiver_email ) );
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exit;
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}
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}
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/**
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* Handle a completed payment.
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*
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* @param WC_Order $order Order object.
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* @param array $posted Posted data.
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*/
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protected function payment_status_completed( $order, $posted ) {
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if ( $order->has_status( wc_get_is_paid_statuses() ) ) {
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WC_Gateway_Paypal::log( 'Aborting, Order #' . $order->get_id() . ' is already complete.' );
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exit;
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}
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$this->validate_transaction_type( $posted['txn_type'] );
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$this->validate_currency( $order, $posted['mc_currency'] );
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$this->validate_amount( $order, $posted['mc_gross'] );
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$this->validate_receiver_email( $order, $posted['receiver_email'] );
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$this->save_paypal_meta_data( $order, $posted );
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if ( 'completed' === $posted['payment_status'] ) {
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if ( $order->has_status( 'cancelled' ) ) {
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$this->payment_status_paid_cancelled_order( $order, $posted );
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}
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$this->payment_complete( $order, ( ! empty( $posted['txn_id'] ) ? wc_clean( $posted['txn_id'] ) : '' ), __( 'IPN payment completed', 'woocommerce' ) );
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if ( ! empty( $posted['mc_fee'] ) ) {
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// Log paypal transaction fee.
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update_post_meta( $order->get_id(), 'PayPal Transaction Fee', wc_clean( $posted['mc_fee'] ) );
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}
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} else {
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if ( 'authorization' === $posted['pending_reason'] ) {
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$this->payment_on_hold( $order, __( 'Payment authorized. Change payment status to processing or complete to capture funds.', 'woocommerce' ) );
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} else {
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/* translators: %s: pending reason. */
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$this->payment_on_hold( $order, sprintf( __( 'Payment pending (%s).', 'woocommerce' ), $posted['pending_reason'] ) );
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}
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}
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}
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/**
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* Handle a pending payment.
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*
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* @param WC_Order $order Order object.
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* @param array $posted Posted data.
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*/
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protected function payment_status_pending( $order, $posted ) {
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$this->payment_status_completed( $order, $posted );
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}
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/**
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* Handle a failed payment.
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*
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* @param WC_Order $order Order object.
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* @param array $posted Posted data.
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*/
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protected function payment_status_failed( $order, $posted ) {
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/* translators: %s: payment status. */
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$order->update_status( 'failed', sprintf( __( 'Payment %s via IPN.', 'woocommerce' ), wc_clean( $posted['payment_status'] ) ) );
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}
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/**
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* Handle a denied payment.
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*
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* @param WC_Order $order Order object.
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* @param array $posted Posted data.
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*/
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protected function payment_status_denied( $order, $posted ) {
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$this->payment_status_failed( $order, $posted );
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}
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/**
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* Handle an expired payment.
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*
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* @param WC_Order $order Order object.
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* @param array $posted Posted data.
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*/
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protected function payment_status_expired( $order, $posted ) {
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$this->payment_status_failed( $order, $posted );
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}
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/**
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* Handle a voided payment.
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*
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* @param WC_Order $order Order object.
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* @param array $posted Posted data.
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*/
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protected function payment_status_voided( $order, $posted ) {
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$this->payment_status_failed( $order, $posted );
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}
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/**
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* When a user cancelled order is marked paid.
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*
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* @param WC_Order $order Order object.
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* @param array $posted Posted data.
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*/
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protected function payment_status_paid_cancelled_order( $order, $posted ) {
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$this->send_ipn_email_notification(
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/* translators: %s: order link. */
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sprintf( __( 'Payment for cancelled order %s received', 'woocommerce' ), '<a class="link" href="' . esc_url( $order->get_edit_order_url() ) . '">' . $order->get_order_number() . '</a>' ),
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/* translators: %s: order ID. */
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sprintf( __( 'Order #%s has been marked paid by PayPal IPN, but was previously cancelled. Admin handling required.', 'woocommerce' ), $order->get_order_number() )
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);
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}
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/**
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* Handle a refunded order.
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*
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* @param WC_Order $order Order object.
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* @param array $posted Posted data.
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*/
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protected function payment_status_refunded( $order, $posted ) {
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// Only handle full refunds, not partial.
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if ( $order->get_total() === wc_format_decimal( $posted['mc_gross'] * -1 ) ) {
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/* translators: %s: payment status. */
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$order->update_status( 'refunded', sprintf( __( 'Payment %s via IPN.', 'woocommerce' ), strtolower( $posted['payment_status'] ) ) );
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$this->send_ipn_email_notification(
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/* translators: %s: order link. */
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sprintf( __( 'Payment for order %s refunded', 'woocommerce' ), '<a class="link" href="' . esc_url( $order->get_edit_order_url() ) . '">' . $order->get_order_number() . '</a>' ),
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/* translators: %1$s: order ID, %2$s: reason code. */
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sprintf( __( 'Order #%1$s has been marked as refunded - PayPal reason code: %2$s', 'woocommerce' ), $order->get_order_number(), $posted['reason_code'] )
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);
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}
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}
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/**
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* Handle a reversal.
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*
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* @param WC_Order $order Order object.
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* @param array $posted Posted data.
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*/
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protected function payment_status_reversed( $order, $posted ) {
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/* translators: %s: payment status. */
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$order->update_status( 'on-hold', sprintf( __( 'Payment %s via IPN.', 'woocommerce' ), wc_clean( $posted['payment_status'] ) ) );
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$this->send_ipn_email_notification(
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/* translators: %s: order link. */
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sprintf( __( 'Payment for order %s reversed', 'woocommerce' ), '<a class="link" href="' . esc_url( $order->get_edit_order_url() ) . '">' . $order->get_order_number() . '</a>' ),
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/* translators: %1$s: order ID, %2$s: reason code. */
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sprintf( __( 'Order #%1$s has been marked on-hold due to a reversal - PayPal reason code: %2$s', 'woocommerce' ), $order->get_order_number(), wc_clean( $posted['reason_code'] ) )
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);
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}
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/**
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* Handle a cancelled reversal.
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*
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* @param WC_Order $order Order object.
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* @param array $posted Posted data.
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*/
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protected function payment_status_canceled_reversal( $order, $posted ) {
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$this->send_ipn_email_notification(
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/* translators: %s: order link. */
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sprintf( __( 'Reversal cancelled for order #%s', 'woocommerce' ), $order->get_order_number() ),
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/* translators: %1$s: order ID, %2$s: order link. */
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sprintf( __( 'Order #%1$s has had a reversal cancelled. Please check the status of payment and update the order status accordingly here: %2$s', 'woocommerce' ), $order->get_order_number(), esc_url( $order->get_edit_order_url() ) )
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);
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}
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/**
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* Save important data from the IPN to the order.
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*
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* @param WC_Order $order Order object.
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* @param array $posted Posted data.
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*/
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protected function save_paypal_meta_data( $order, $posted ) {
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if ( ! empty( $posted['payer_email'] ) ) {
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update_post_meta( $order->get_id(), 'Payer PayPal address', wc_clean( $posted['payer_email'] ) );
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}
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if ( ! empty( $posted['first_name'] ) ) {
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update_post_meta( $order->get_id(), 'Payer first name', wc_clean( $posted['first_name'] ) );
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}
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if ( ! empty( $posted['last_name'] ) ) {
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update_post_meta( $order->get_id(), 'Payer last name', wc_clean( $posted['last_name'] ) );
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}
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if ( ! empty( $posted['payment_type'] ) ) {
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update_post_meta( $order->get_id(), 'Payment type', wc_clean( $posted['payment_type'] ) );
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}
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if ( ! empty( $posted['txn_id'] ) ) {
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update_post_meta( $order->get_id(), '_transaction_id', wc_clean( $posted['txn_id'] ) );
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}
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if ( ! empty( $posted['payment_status'] ) ) {
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update_post_meta( $order->get_id(), '_paypal_status', wc_clean( $posted['payment_status'] ) );
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}
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}
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/**
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* Send a notification to the user handling orders.
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*
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* @param string $subject Email subject.
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* @param string $message Email message.
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*/
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protected function send_ipn_email_notification( $subject, $message ) {
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$new_order_settings = get_option( 'woocommerce_new_order_settings', array() );
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$mailer = WC()->mailer();
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$message = $mailer->wrap_message( $subject, $message );
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$woocommerce_paypal_settings = get_option( 'woocommerce_paypal_settings' );
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if ( ! empty( $woocommerce_paypal_settings['ipn_notification'] ) && 'no' === $woocommerce_paypal_settings['ipn_notification'] ) {
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return;
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}
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$mailer->send( ! empty( $new_order_settings['recipient'] ) ? $new_order_settings['recipient'] : get_option( 'admin_email' ), strip_tags( $subject ), $message );
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}
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}
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