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<?php |
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/** |
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* Stripe payment api |
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* |
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* @package Timetics |
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*/ |
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namespace Timetics\Core\Integrations\Stripe; |
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|
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defined( 'ABSPATH' ) || exit; |
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|
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use Timetics\Base\Api; |
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use Timetics\Core\Bookings\Booking; |
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use Timetics\Utils\Singleton; |
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use WP_HTTP_Response; |
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|
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/** |
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* Class Api Stripe |
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*/ |
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class Api_Stripe extends Api { |
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use Singleton; |
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|
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/** |
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* Store api namespace |
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* |
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* @var string |
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*/ |
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protected $namespace = 'timetics/v1'; |
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|
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/** |
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* Store rest base |
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* |
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* @var string |
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*/ |
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protected $rest_base = 'stripe'; |
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|
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/** |
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* Register rest routes |
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* |
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* @return void |
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*/ |
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public function register_routes() { |
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/** |
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* Register route |
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* |
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* @var void |
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*/ |
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register_rest_route( |
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$this->namespace, $this->rest_base . '/payment', [ |
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[ |
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'methods' => \WP_REST_Server::CREATABLE, |
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'callback' => [ $this, 'create_payment' ], |
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'permission_callback' => function () { |
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return true; |
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}, |
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], |
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] |
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); |
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} |
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|
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/** |
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* Create stripe payment |
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* |
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* @param WP_Rest_Request $request |
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* |
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* @return JSON |
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*/ |
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public function create_payment( $request ) { |
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if ( $this->is_rate_limited() ) { |
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return new WP_HTTP_Response( |
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[ |
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'success' => 0, |
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'status_code' => 429, |
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'message' => __( 'Too many requests. Please try again later.', 'timetics' ), |
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], |
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429 |
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); |
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} |
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|
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$data = json_decode( $request->get_body(), true ); |
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|
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$amount = ! empty( $data['amount'] ) ? floatval( $data['amount'] ) : 0; |
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$currency = ! empty( $data['currency'] ) ? sanitize_text_field( $data['currency'] ) : ''; |
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$booking_id = ! empty( $data['booking_id'] ) ? absint( $data['booking_id'] ) : 0; |
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$token = ! empty( $data['security_token'] ) ? sanitize_text_field( $data['security_token'] ) : ''; |
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|
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$metadata = []; |
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|
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// The card form (StripePayment.js) creates this PaymentIntent up front, before |
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// a booking exists, purely from the meeting's price — so booking_id/token are |
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// optional here. Binding happens later via bind_payment_intent(), and the booking |
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// can only be marked paid there after its security_token is verified. An intent |
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// created without a booking can never complete a payment, so this cannot be used |
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// to steal funds; it can only let a caller create inert PaymentIntents in Stripe. |
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if ( $booking_id > 0 && '' !== $token ) { |
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$booking = new Booking( $booking_id ); |
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|
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if ( ! $booking->is_booking() ) { |
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return new WP_HTTP_Response( |
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[ |
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'success' => 0, |
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'status_code' => 404, |
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'message' => __( 'Invalid booking id.', 'timetics' ), |
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], |
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404 |
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); |
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} |
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|
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$stored = (string) $booking->get_security_token(); |
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|
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if ( '' === $stored || ! hash_equals( $stored, $token ) ) { |
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return new WP_HTTP_Response( |
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[ |
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'success' => 0, |
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'status_code' => 403, |
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'message' => __( 'Invalid booking token.', 'timetics' ), |
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], |
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403 |
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); |
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} |
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|
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$metadata['booking_id'] = $booking_id; |
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$metadata['security_token'] = $stored; |
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|
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// Once bound, trust the booking's own total over whatever the client sent. |
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$amount = (float) $booking->get_total(); |
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} |
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|
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// Sanity bounds — reject nonsense amounts regardless of binding. |
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if ( $amount <= 0 || $amount > 1000000 || ! preg_match( '/^[A-Za-z]{3}$/', (string) $currency ) ) { |
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return new WP_HTTP_Response( |
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[ |
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'success' => 0, |
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'status_code' => 400, |
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'message' => __( 'Invalid amount or currency.', 'timetics' ), |
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], |
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400 |
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); |
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} |
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|
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$payment = new StripePayment(); |
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|
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$payment = $payment->create_payment( |
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[ |
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'amount' => $amount * 100, |
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'currency' => $currency, |
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'metadata' => $metadata, |
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] |
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); |
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|
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if ( is_wp_error( $payment ) ) { |
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$response = [ |
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'success' => 0, |
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'status_code' => 403, |
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'message' => $payment->get_error_message(), |
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]; |
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|
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return new WP_HTTP_Response( $response, 403 ); |
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} |
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|
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return rest_ensure_response( $payment ); |
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} |
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|
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/** |
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* Simple per-IP fixed-window limiter for the public payment-intent route. |
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* |
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* @return bool |
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*/ |
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private function is_rate_limited() { |
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$ip = isset( $_SERVER['REMOTE_ADDR'] ) ? sanitize_text_field( wp_unslash( $_SERVER['REMOTE_ADDR'] ) ) : ''; |
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|
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if ( '' === $ip ) { |
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return false; |
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} |
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|
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$key = 'tt_stripe_rl_' . md5( $ip ); |
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$count = (int) get_transient( $key ); |
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|
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if ( $count >= 20 ) { |
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return true; |
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} |
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|
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set_transient( $key, $count + 1, MINUTE_IN_SECONDS * 10 ); |
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|
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return false; |
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} |
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} |
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|
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|
