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<?php
/**
* WooCommerce Payment Gateways
*
* Loads payment gateways via hooks for use in the store.
*
* @version 2.2.0
* @package WooCommerce\Classes\Payment
*/
use Automattic\WooCommerce\Internal\Traits\AccessiblePrivateMethods;
use Automattic\WooCommerce\Proxies\LegacyProxy;
use Automattic\WooCommerce\Utilities\ArrayUtil;
defined( 'ABSPATH' ) || exit;
/**
* Payment gateways class.
*/
class WC_Payment_Gateways {
use AccessiblePrivateMethods;
/**
* Payment gateway classes.
*
* @var array
*/
public $payment_gateways = array();
/**
* The single instance of the class.
*
* @var WC_Payment_Gateways
* @since 2.1.0
*/
protected static $_instance = null;
/**
* Main WC_Payment_Gateways Instance.
*
* Ensures only one instance of WC_Payment_Gateways is loaded or can be loaded.
*
* @since 2.1
* @return WC_Payment_Gateways Main instance
*/
public static function instance() {
if ( is_null( self::$_instance ) ) {
self::$_instance = new self();
}
return self::$_instance;
}
/**
* Cloning is forbidden.
*
* @since 2.1
*/
public function __clone() {
wc_doing_it_wrong( __FUNCTION__, __( 'Cloning is forbidden.', 'woocommerce' ), '2.1' );
}
/**
* Unserializing instances of this class is forbidden.
*
* @since 2.1
*/
public function __wakeup() {
wc_doing_it_wrong( __FUNCTION__, __( 'Unserializing instances of this class is forbidden.', 'woocommerce' ), '2.1' );
}
/**
* Initialize payment gateways.
*/
public function __construct() {
$this->init();
}
/**
* Load gateways and hook in functions.
*/
public function init() {
$load_gateways = array(
'WC_Gateway_BACS',
'WC_Gateway_Cheque',
'WC_Gateway_COD',
);
if ( $this->should_load_paypal_standard() ) {
$load_gateways[] = 'WC_Gateway_Paypal';
}
// Filter.
$load_gateways = apply_filters( 'woocommerce_payment_gateways', $load_gateways );
// Get sort order option.
$ordering = (array) get_option( 'woocommerce_gateway_order' );
$order_end = 999;
// Load gateways in order.
foreach ( $load_gateways as $gateway ) {
if ( is_string( $gateway ) && class_exists( $gateway ) ) {
$gateway = new $gateway();
}
// Gateways need to be valid and extend WC_Payment_Gateway.
if ( ! is_a( $gateway, 'WC_Payment_Gateway' ) ) {
continue;
}
if ( isset( $ordering[ $gateway->id ] ) && is_numeric( $ordering[ $gateway->id ] ) ) {
// Add in position.
$this->payment_gateways[ $ordering[ $gateway->id ] ] = $gateway;
} else {
// Add to end of the array.
$this->payment_gateways[ $order_end ] = $gateway;
$order_end++;
}
}
ksort( $this->payment_gateways );
self::add_action( 'wc_payment_gateways_initialized', array( $this, 'on_payment_gateways_initialized' ) );
/**
* Hook that is called when the payment gateways have been initialized.
*
* @param WC_Payment_Gateways $wc_payment_gateways The payment gateways instance.
* @since 8.5.0
*/
do_action( 'wc_payment_gateways_initialized', $this );
}
/**
* Hook into payment gateway settings changes.
*
* @param WC_Payment_Gateways $wc_payment_gateways The WC_Payment_Gateways instance.
* @since 8.5.0
*/
private function on_payment_gateways_initialized( WC_Payment_Gateways $wc_payment_gateways ) {
foreach ( $this->payment_gateways as $gateway ) {
$option_key = $gateway->get_option_key();
self::add_action(
'add_option_' . $option_key,
function( $option, $value ) use ( $gateway ) {
$this->payment_gateway_settings_option_changed( $gateway, $value, $option );
},
10,
2
);
self::add_action(
'update_option_' . $option_key,
function( $old_value, $value, $option ) use ( $gateway ) {
$this->payment_gateway_settings_option_changed( $gateway, $value, $option, $old_value );
},
10,
3
);
}
}
/**
* Callback for when a gateway settings option was added or updated.
*
* @param WC_Payment_Gateway $gateway The gateway for which the option was added or updated.
* @param mixed $value New value.
* @param string $option Option name.
* @param mixed $old_value Old value. `null` when called via add_option_ hook.
* @since 8.5.0
*/
private function payment_gateway_settings_option_changed( $gateway, $value, $option, $old_value = null ) {
if ( ! $this->was_gateway_enabled( $value, $old_value ) ) {
return;
}
// This is a change to a payment gateway's settings and it was just enabled. Let's send an email to the admin.
// "untitled" shouldn't happen, but just in case.
$this->notify_admin_payment_gateway_enabled( $gateway );
}
/**
* Email the site admin when a payment gateway has been enabled.
*
* @param WC_Payment_Gateway $gateway The gateway that was enabled.
* @return bool Whether the email was sent or not.
* @since 8.5.0
*/
private function notify_admin_payment_gateway_enabled( $gateway ) {
$admin_email = get_option( 'admin_email' );
$user = get_user_by( 'email', $admin_email );
$username = $user ? $user->user_login : $admin_email;
$gateway_title = $gateway->get_method_title();
$gateway_settings_url = esc_url_raw( self_admin_url( 'admin.php?page=wc-settings&tab=checkout§ion=' . $gateway->id ) );
$site_name = wp_specialchars_decode( get_option( 'blogname' ), ENT_QUOTES );
$site_url = home_url();
/**
* Allows adding to the addresses that receive payment gateway enabled notifications.
*
* @param array $email_addresses The array of email addresses to notify.
* @param WC_Payment_Gateway $gateway The gateway that was enabled.
* @return array The augmented array of email addresses to notify.
* @since 8.5.0
*/
$email_addresses = apply_filters( 'wc_payment_gateway_enabled_notification_email_addresses', array(), $gateway );
$email_addresses[] = $admin_email;
$email_addresses = array_unique(
array_filter(
$email_addresses,
function( $email_address ) {
return filter_var( $email_address, FILTER_VALIDATE_EMAIL );
}
)
);
$logger = wc_get_container()->get( LegacyProxy::class )->call_function( 'wc_get_logger' );
$logger->info( sprintf( 'Payment gateway enabled: "%s"', $gateway_title ) );
$email_text = sprintf(
/* translators: Payment gateway enabled notification email. 1: Username, 2: Gateway Title, 3: Site URL, 4: Gateway Settings URL, 5: Admin Email, 6: Site Name, 7: Site URL. */
__(
'Howdy %1$s,
The payment gateway "%2$s" was just enabled on this site:
%3$s
If this was intentional you can safely ignore and delete this email.
If you did not enable this payment gateway, please log in to your site and consider disabling it here:
%4$s
This email has been sent to %5$s
Regards,
All at %6$s
%7$s',
'woocommerce'
),
$username,
$gateway_title,
$site_url,
$gateway_settings_url,
$admin_email,
$site_name,
$site_url
);
if ( '' !== get_option( 'blogname' ) ) {
$site_title = wp_specialchars_decode( get_option( 'blogname' ), ENT_QUOTES );
} else {
$site_title = wp_parse_url( home_url(), PHP_URL_HOST );
}
return wp_mail(
$email_addresses,
sprintf(
/* translators: Payment gateway enabled notification email subject. %s1: Site title, $s2: Gateway title. */
__( '[%1$s] Payment gateway "%2$s" enabled', 'woocommerce' ),
$site_title,
$gateway_title
),
$email_text
);
}
/**
* Determines from changes in settings if a gateway was enabled.
*
* @param array $value New value.
* @param array $old_value Old value.
* @return bool Whether the gateway was enabled or not.
*/
private function was_gateway_enabled( $value, $old_value = null ) {
if ( null === $old_value ) {
// There was no old value, so this is a new option.
if ( ! empty( $value ) && is_array( $value ) && isset( $value['enabled'] ) && 'yes' === $value['enabled'] && isset( $value['title'] ) ) {
return true;
}
return false;
}
// There was an old value, so this is an update.
if (
ArrayUtil::get_value_or_default( $value, 'enabled' ) === 'yes' &&
ArrayUtil::get_value_or_default( $old_value, 'enabled' ) !== 'yes' ) {
return true;
}
return false;
}
/**
* Get gateways.
*
* @return array
*/
public function payment_gateways() {
$_available_gateways = array();
if ( count( $this->payment_gateways ) > 0 ) {
foreach ( $this->payment_gateways as $gateway ) {
$_available_gateways[ $gateway->id ] = $gateway;
}
}
return $_available_gateways;
}
/**
* Get array of registered gateway ids
*
* @since 2.6.0
* @return array of strings
*/
public function get_payment_gateway_ids() {
return wp_list_pluck( $this->payment_gateways, 'id' );
}
/**
* Get available gateways.
*
* @return array
*/
public function get_available_payment_gateways() {
$_available_gateways = array();
foreach ( $this->payment_gateways as $gateway ) {
if ( $gateway->is_available() ) {
if ( ! is_add_payment_method_page() ) {
$_available_gateways[ $gateway->id ] = $gateway;
} elseif ( $gateway->supports( 'add_payment_method' ) || $gateway->supports( 'tokenization' ) ) {
$_available_gateways[ $gateway->id ] = $gateway;
}
}
}
return array_filter( (array) apply_filters( 'woocommerce_available_payment_gateways', $_available_gateways ), array( $this, 'filter_valid_gateway_class' ) );
}
/**
* Callback for array filter. Returns true if gateway is of correct type.
*
* @since 3.6.0
* @param object $gateway Gateway to check.
* @return bool
*/
protected function filter_valid_gateway_class( $gateway ) {
return $gateway && is_a( $gateway, 'WC_Payment_Gateway' );
}
/**
* Set the current, active gateway.
*
* @param array $gateways Available payment gateways.
*/
public function set_current_gateway( $gateways ) {
// Be on the defensive.
if ( ! is_array( $gateways ) || empty( $gateways ) ) {
return;
}
$current_gateway = false;
if ( WC()->session ) {
$current = WC()->session->get( 'chosen_payment_method' );
if ( $current && isset( $gateways[ $current ] ) ) {
$current_gateway = $gateways[ $current ];
}
}
if ( ! $current_gateway ) {
$current_gateway = current( $gateways );
}
// Ensure we can make a call to set_current() without triggering an error.
if ( $current_gateway && is_callable( array( $current_gateway, 'set_current' ) ) ) {
$current_gateway->set_current();
}
}
/**
* Save options in admin.
*/
public function process_admin_options() {
$gateway_order = isset( $_POST['gateway_order'] ) ? wc_clean( wp_unslash( $_POST['gateway_order'] ) ) : ''; // WPCS: input var ok, CSRF ok.
$order = array();
if ( is_array( $gateway_order ) && count( $gateway_order ) > 0 ) {
$loop = 0;
foreach ( $gateway_order as $gateway_id ) {
$order[ esc_attr( $gateway_id ) ] = $loop;
$loop++;
}
}
update_option( 'woocommerce_gateway_order', $order );
}
/**
* Determines if PayPal Standard should be loaded.
*
* @since 5.5.0
* @return bool Whether PayPal Standard should be loaded or not.
*/
protected function should_load_paypal_standard() {
// Tech debt: This class needs to be initialized to make sure any existing subscriptions gets processed as expected, even if the gateway is not enabled for new orders.
// Eventually, we want to load this via a singleton pattern to avoid unnecessary instantiation.
$paypal = new WC_Gateway_Paypal();
return $paypal->should_load();
}
}
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