security: add webhook idempotency and payment amount verification
Idempotency (replay attack protection): - Add WebhookEvent model for tracking processed events - Add webhook_events migration with unique constraint - Add isAlreadyProcessed() to BTCPay and Stripe controllers - Reject duplicate events with 200 response Payment amount verification (BTCPay): - Add verifyPaymentAmount() method - Reject underpayments (mark order failed, create audit record) - Reject currency mismatches - Log overpayments for manual review - Add 0.01 tolerance for floating point precision Add comprehensive tests for both features. Update TODO.md to mark P1 issues as fixed. Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
This commit is contained in:
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8 changed files with 2039 additions and 6 deletions
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@ -1,5 +1,7 @@
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<?php
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declare(strict_types=1);
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namespace Core\Mod\Commerce\Controllers\Webhooks;
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use Core\Front\Controller;
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@ -9,6 +11,7 @@ use Illuminate\Support\Facades\DB;
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use Illuminate\Support\Facades\Log;
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use Core\Mod\Commerce\Models\Order;
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use Core\Mod\Commerce\Models\Payment;
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use Core\Mod\Commerce\Models\WebhookEvent;
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use Core\Mod\Commerce\Notifications\OrderConfirmation;
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use Core\Mod\Commerce\Services\CommerceService;
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use Core\Mod\Commerce\Services\PaymentGateway\BTCPayGateway;
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@ -47,8 +50,18 @@ class BTCPayWebhookController extends Controller
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$event = $this->gateway->parseWebhookEvent($payload);
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// Log the webhook event for audit trail
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$this->webhookLogger->startFromParsedEvent('btcpay', $event, $payload, $request);
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// Log the webhook event for audit trail (also handles deduplication via unique constraint)
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$webhookEvent = $this->webhookLogger->startFromParsedEvent('btcpay', $event, $payload, $request);
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// Idempotency check: if this event was already processed, return success without reprocessing
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if ($this->isAlreadyProcessed($webhookEvent, $event)) {
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Log::info('BTCPay webhook already processed (idempotency check)', [
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'type' => $event['type'],
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'id' => $event['id'],
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]);
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return response('Already processed (duplicate)', 200);
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}
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Log::info('BTCPay webhook received', [
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'type' => $event['type'],
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@ -84,6 +97,41 @@ class BTCPayWebhookController extends Controller
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}
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}
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/**
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* Check if the webhook event has already been processed.
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*
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* This provides idempotency protection against replay attacks and
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* duplicate webhook deliveries from the payment gateway.
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*/
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protected function isAlreadyProcessed(WebhookEvent $webhookEvent, array $event): bool
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{
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// If no event ID, we can't deduplicate
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if (empty($event['id'])) {
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return false;
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}
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// If the webhook event we just created has a different ID than the one
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// that already existed in the database, it means this is a duplicate
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$existingEvent = WebhookEvent::where('gateway', 'btcpay')
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->where('event_id', $event['id'])
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->where('id', '!=', $webhookEvent->id)
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->whereIn('status', [WebhookEvent::STATUS_PROCESSED, WebhookEvent::STATUS_SKIPPED])
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->first();
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if ($existingEvent) {
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$this->webhookLogger->skip('Duplicate event (already processed)');
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return true;
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}
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// Also check if the current event was already processed (fetched from DB due to duplicate insert)
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if ($webhookEvent->isProcessed() || $webhookEvent->isSkipped()) {
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return true;
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}
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return false;
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}
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protected function handleUnknownEvent(array $event): Response
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{
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$this->webhookLogger->skip('Unhandled event type: '.$event['type']);
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@ -144,20 +192,81 @@ class BTCPayWebhookController extends Controller
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// Get invoice details from BTCPay
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$invoiceData = $this->gateway->getCheckoutSession($event['id']);
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// Create payment record
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// SECURITY: Verify the paid amount matches the order total
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$amountVerification = $this->verifyPaymentAmount($order, $invoiceData);
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if (! $amountVerification['valid']) {
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Log::warning('BTCPay webhook: Payment amount verification failed', [
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'order_id' => $order->id,
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'order_total' => $order->total,
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'paid_amount' => $amountVerification['paid_amount'],
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'currency' => $order->currency,
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'discrepancy' => $amountVerification['discrepancy'],
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'reason' => $amountVerification['reason'],
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]);
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// Handle underpayment - mark order as failed with details
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if ($amountVerification['reason'] === 'underpaid') {
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$order->markAsFailed(sprintf(
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'Underpaid: received %s %s, expected %s %s',
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$amountVerification['paid_amount'],
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$order->currency,
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$order->total,
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$order->currency
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));
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// Create a partial payment record for audit trail
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Payment::create([
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'workspace_id' => $order->workspace_id,
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'order_id' => $order->id,
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'invoice_id' => null,
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'gateway' => 'btcpay',
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'gateway_payment_id' => $event['id'],
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'amount' => $amountVerification['paid_amount'],
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'currency' => $order->currency,
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'status' => 'underpaid',
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'paid_at' => now(),
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'gateway_response' => $invoiceData['raw'] ?? [],
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]);
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return response('Underpaid - order not fulfilled', 200);
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}
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// Currency mismatch - this is a serious issue
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if ($amountVerification['reason'] === 'currency_mismatch') {
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$order->markAsFailed(sprintf(
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'Currency mismatch: received %s, expected %s',
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$amountVerification['received_currency'],
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$order->currency
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));
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return response('Currency mismatch - order not fulfilled', 200);
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}
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}
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// Create payment record with the verified amount
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$payment = Payment::create([
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'workspace_id' => $order->workspace_id,
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'order_id' => $order->id,
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'invoice_id' => null, // Will be set by fulfillOrder
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'gateway' => 'btcpay',
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'gateway_payment_id' => $event['id'],
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'amount' => $order->total,
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'amount' => $amountVerification['paid_amount'],
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'currency' => $order->currency,
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'status' => 'succeeded',
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'paid_at' => now(),
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'gateway_response' => $invoiceData['raw'] ?? [],
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]);
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// Log overpayment for manual review but still fulfil
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if ($amountVerification['reason'] === 'overpaid') {
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Log::info('BTCPay webhook: Overpayment received', [
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'order_id' => $order->id,
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'order_total' => $order->total,
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'paid_amount' => $amountVerification['paid_amount'],
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'overpayment' => $amountVerification['discrepancy'],
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]);
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}
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// Fulfil the order (provisions entitlements, creates invoice)
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$this->commerce->fulfillOrder($order, $payment);
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@ -173,6 +282,80 @@ class BTCPayWebhookController extends Controller
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return response('OK', 200);
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}
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/**
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* Verify that the payment amount from BTCPay matches the order total.
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*
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* This is a critical security check to prevent attacks where an attacker
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* pays less than the required amount but the order is still fulfilled.
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*
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* @return array{valid: bool, paid_amount: float, discrepancy: float, reason: string|null, received_currency: string|null}
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*/
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protected function verifyPaymentAmount(Order $order, array $invoiceData): array
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{
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$orderTotal = (float) $order->total;
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$orderCurrency = strtoupper($order->currency);
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// Extract paid amount from BTCPay response
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// BTCPay uses 'amount' field for the invoice amount
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$paidAmount = isset($invoiceData['amount']) ? (float) $invoiceData['amount'] : 0.0;
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$paidCurrency = isset($invoiceData['currency']) ? strtoupper($invoiceData['currency']) : null;
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// Also check raw response for additional payment data
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$rawData = $invoiceData['raw'] ?? [];
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if (isset($rawData['amount'])) {
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$paidAmount = (float) $rawData['amount'];
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}
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if (isset($rawData['currency'])) {
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$paidCurrency = strtoupper($rawData['currency']);
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}
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// Check currency matches
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if ($paidCurrency && $paidCurrency !== $orderCurrency) {
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return [
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'valid' => false,
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'paid_amount' => $paidAmount,
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'discrepancy' => 0,
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'reason' => 'currency_mismatch',
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'received_currency' => $paidCurrency,
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];
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}
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// Calculate discrepancy
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$discrepancy = $paidAmount - $orderTotal;
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// Allow a small tolerance for floating point precision (0.01 currency units)
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$tolerance = 0.01;
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if ($paidAmount < ($orderTotal - $tolerance)) {
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return [
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'valid' => false,
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'paid_amount' => $paidAmount,
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'discrepancy' => $discrepancy,
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'reason' => 'underpaid',
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'received_currency' => $paidCurrency,
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];
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}
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if ($paidAmount > ($orderTotal + $tolerance)) {
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// Overpayment is valid but logged for manual review
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return [
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'valid' => true,
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'paid_amount' => $paidAmount,
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'discrepancy' => $discrepancy,
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'reason' => 'overpaid',
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'received_currency' => $paidCurrency,
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];
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}
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return [
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'valid' => true,
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'paid_amount' => $paidAmount,
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'discrepancy' => 0,
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'reason' => null,
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'received_currency' => $paidCurrency,
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];
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}
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protected function handleExpired(array $event): Response
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{
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// Invoice expired - mark order as failed
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<?php
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declare(strict_types=1);
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namespace Core\Mod\Commerce\Controllers\Webhooks;
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use Carbon\Carbon;
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@ -14,6 +16,7 @@ use Core\Mod\Commerce\Models\Order;
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use Core\Mod\Commerce\Models\Payment;
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use Core\Mod\Commerce\Models\PaymentMethod;
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use Core\Mod\Commerce\Models\Subscription;
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use Core\Mod\Commerce\Models\WebhookEvent;
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use Core\Mod\Commerce\Notifications\OrderConfirmation;
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use Core\Mod\Commerce\Notifications\PaymentFailed;
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use Core\Mod\Commerce\Notifications\SubscriptionCancelled;
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@ -57,8 +60,18 @@ class StripeWebhookController extends Controller
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$event = $this->gateway->parseWebhookEvent($payload);
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// Log the webhook event for audit trail
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$this->webhookLogger->startFromParsedEvent('stripe', $event, $payload, $request);
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// Log the webhook event for audit trail (also handles deduplication via unique constraint)
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$webhookEvent = $this->webhookLogger->startFromParsedEvent('stripe', $event, $payload, $request);
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// Idempotency check: if this event was already processed, return success without reprocessing
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if ($this->isAlreadyProcessed($webhookEvent, $event)) {
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Log::info('Stripe webhook already processed (idempotency check)', [
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'type' => $event['type'],
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'id' => $event['id'],
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]);
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return response('Already processed (duplicate)', 200);
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}
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Log::info('Stripe webhook received', [
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'type' => $event['type'],
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@ -98,6 +111,41 @@ class StripeWebhookController extends Controller
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}
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}
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/**
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* Check if the webhook event has already been processed.
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*
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* This provides idempotency protection against replay attacks and
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* duplicate webhook deliveries from Stripe.
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*/
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protected function isAlreadyProcessed(WebhookEvent $webhookEvent, array $event): bool
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{
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// If no event ID, we can't deduplicate
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if (empty($event['id'])) {
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return false;
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}
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// If the webhook event we just created has a different ID than the one
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// that already existed in the database, it means this is a duplicate
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$existingEvent = WebhookEvent::where('gateway', 'stripe')
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->where('event_id', $event['id'])
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->where('id', '!=', $webhookEvent->id)
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->whereIn('status', [WebhookEvent::STATUS_PROCESSED, WebhookEvent::STATUS_SKIPPED])
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->first();
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if ($existingEvent) {
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$this->webhookLogger->skip('Duplicate event (already processed)');
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return true;
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}
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// Also check if the current event was already processed (fetched from DB due to duplicate insert)
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if ($webhookEvent->isProcessed() || $webhookEvent->isSkipped()) {
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return true;
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}
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return false;
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}
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protected function handleUnknownEvent(array $event): Response
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{
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$this->webhookLogger->skip('Unhandled event type: '.$event['type']);
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64
Migrations/2026_01_29_000001_create_webhook_events_table.php
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64
Migrations/2026_01_29_000001_create_webhook_events_table.php
Normal file
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<?php
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declare(strict_types=1);
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use Illuminate\Database\Migrations\Migration;
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use Illuminate\Database\Schema\Blueprint;
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use Illuminate\Support\Facades\Schema;
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return new class extends Migration
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{
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/**
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* Webhook Events table for tracking incoming payment gateway webhooks.
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*
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* This provides:
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* - Audit trail of all webhook events
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* - Idempotency via unique constraint on (gateway, event_id)
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* - Replay attack protection
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*/
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public function up(): void
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{
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Schema::create('webhook_events', function (Blueprint $table) {
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$table->id();
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// Gateway identification
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$table->string('gateway', 32); // stripe, btcpay, etc.
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$table->string('event_id', 255)->nullable(); // Gateway's unique event ID
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$table->string('event_type', 64); // checkout.session.completed, invoice.paid, etc.
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// Payload storage
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$table->mediumText('payload'); // Raw webhook payload
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$table->json('headers')->nullable(); // Relevant headers (sanitised)
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// Processing status
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$table->string('status', 32)->default('pending'); // pending, processed, failed, skipped
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$table->text('error_message')->nullable();
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$table->unsignedSmallInteger('http_status_code')->nullable();
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// Related entities (for linking/audit)
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$table->foreignId('order_id')->nullable()->constrained('orders')->nullOnDelete();
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$table->foreignId('subscription_id')->nullable()->constrained('subscriptions')->nullOnDelete();
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// Timestamps
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$table->timestamp('received_at');
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$table->timestamp('processed_at')->nullable();
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$table->timestamps();
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// Idempotency: prevent duplicate processing of same event
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// The unique constraint ensures only one record per gateway+event_id
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$table->unique(['gateway', 'event_id'], 'webhook_events_idempotency');
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// Query indexes
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$table->index(['gateway', 'status', 'received_at']);
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$table->index(['gateway', 'event_type']);
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$table->index(['order_id']);
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$table->index(['subscription_id']);
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$table->index(['status', 'received_at']);
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});
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}
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public function down(): void
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{
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Schema::dropIfExists('webhook_events');
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}
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};
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211
TODO.md
Normal file
211
TODO.md
Normal file
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@ -0,0 +1,211 @@
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# TODO.md - core-commerce
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Production-quality task list for the commerce module.
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---
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## P1 - Critical / Security
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### Webhook Security
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- [x] **Add idempotency handling for BTCPay webhooks** - ~~Currently `BTCPayWebhookController::handleSettled()` checks `$order->isPaid()` but doesn't record processed webhook IDs. A replay attack could trigger duplicate processing if timing is right.~~ **FIXED:** Added `isAlreadyProcessed()` method in both `BTCPayWebhookController` and `StripeWebhookController`. Webhook events are now stored in `webhook_events` table with unique constraint on `(gateway, event_id)`. Duplicate events are rejected early with "Already processed (duplicate)" response. Migration: `2026_01_29_000001_create_webhook_events_table.php`.
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- [ ] **Add rate limiting per IP for webhook endpoints** - Current throttle (120/min) is global. A malicious actor could exhaust the limit for legitimate webhooks. Add per-IP limiting with higher limits for known gateway IPs.
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- [ ] **Validate BTCPay webhook payload structure** - `parseWebhookEvent()` assumes JSON structure without schema validation. Malformed payloads could cause unexpected behaviour. Add JSON schema validation or strict key checking.
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- [x] **Add webhook replay protection window** - ~~Neither gateway stores processed webhook event IDs with timestamp-based expiry.~~ **FIXED:** Webhook events are now stored permanently in `webhook_events` table with `processed_at` timestamp. Both controllers check for existing processed events before reprocessing. The unique constraint prevents race conditions at the database level.
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### Payment Security
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- [x] **Add amount verification for BTCPay settlements** - ~~`BTCPayWebhookController::handleSettled()` trusts the order's `total` without verifying against BTCPay's settled amount.~~ **FIXED:** Added `verifyPaymentAmount()` method that checks: 1) Currency matches order currency 2) Paid amount >= order total. Underpayments are rejected and order marked as failed with detailed reason. Overpayments are logged but fulfilled. Payment records include actual paid amount for audit trail.
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- [x] **Add currency mismatch detection** - ~~If gateway returns different currency than order, this could result in incorrect fulfillment.~~ **FIXED:** The `verifyPaymentAmount()` method now validates currency matches. Orders with currency mismatch are marked as failed with "Currency mismatch: received X, expected Y" message.
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- [ ] **Rate limit checkout session creation** - `CheckoutRateLimiter` exists but isn't applied in `CommerceService::createCheckout()`. Card testing attacks could abuse this endpoint.
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- [ ] **Add fraud scoring integration** - No fraud detection for suspicious patterns (multiple failed payments, velocity checks, geo-anomalies). Consider Stripe Radar integration for Stripe gateway.
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### Input Validation
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- [ ] **Sanitise user-provided coupon codes** - `CouponService::validateByCode()` uses raw input. Add length limits, character validation, and normalisation (uppercase) before DB query.
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- [ ] **Validate billing address components** - `Order::create()` accepts `billing_address` array without validating structure. Malformed addresses could cause PDF generation issues or tax calculation failures.
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- [ ] **Add CSRF protection to API billing endpoints** - Routes in `api.php` use `auth` middleware but not `verified` or CSRF tokens for state-changing operations.
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---
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## P2 - High Priority
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### Data Integrity
|
||||
|
||||
- [ ] **Add database transactions to ReferralService::requestPayout()** - Currently uses transaction but doesn't lock commission rows, allowing potential race conditions if user submits multiple payout requests simultaneously.
|
||||
|
||||
- [ ] **Add optimistic locking to Subscription model** - Concurrent subscription updates (pause/cancel/renew) could result in inconsistent state. Add `version` column and check.
|
||||
|
||||
- [ ] **Handle partial payments in BTCPay** - BTCPay can receive partial payments but current flow only handles full settlement. Add `InvoicePartiallyPaid` webhook handling with admin notification.
|
||||
|
||||
### Missing Core Features
|
||||
|
||||
- [ ] **Implement provisioning API endpoints** - Routes commented out in `api.php`. Required for external integrations (WHMCS, custom portals). Create `ProductApiController` and `EntitlementApiController`.
|
||||
|
||||
- [ ] **Add subscription upgrade/downgrade via API** - `CommerceController::executeUpgrade()` referenced in routes but implementation needs review for proration handling.
|
||||
|
||||
- [ ] **Add payment method management UI tests** - `PaymentMethods` Livewire component exists but no feature tests for add/remove/set-default flows.
|
||||
|
||||
- [ ] **Implement credit note application to future invoices** - `CreditNote` model has `applied_to_order_id` but no service method to auto-apply credits to new orders.
|
||||
|
||||
### Error Handling
|
||||
|
||||
- [ ] **Add retry mechanism for failed invoice PDF generation** - `InvoiceService` doesn't handle DomPDF failures gracefully. Add queue job with retries.
|
||||
|
||||
- [ ] **Improve error messages for checkout failures** - Gateway errors are caught but user-facing messages are generic. Map common errors to helpful messages.
|
||||
|
||||
- [ ] **Add alerting for repeated payment failures** - DunningService logs failures but doesn't alert ops team. Add Slack/email notification after N failures.
|
||||
|
||||
### Testing Gaps
|
||||
|
||||
- [ ] **Add integration tests for Stripe webhook handlers** - `WebhookTest.php` exists but focuses on BTCPay. Add coverage for `StripeWebhookController` event handlers.
|
||||
|
||||
- [ ] **Add tests for concurrent subscription operations** - No tests for race conditions in pause/unpause/cancel/renew flows.
|
||||
|
||||
- [ ] **Add tests for multi-currency order flow** - `CurrencyServiceTest` tests conversion but not full checkout with display currency different from base.
|
||||
|
||||
- [ ] **Add tests for referral commission maturation edge cases** - What happens if order is refunded during maturation period?
|
||||
|
||||
---
|
||||
|
||||
## P3 - Medium Priority
|
||||
|
||||
### Performance
|
||||
|
||||
- [ ] **Add index on `orders.idempotency_key`** - Used in `CommerceService::createOrder()` lookup but not indexed. Add unique index.
|
||||
|
||||
- [ ] **Add index on `invoices.workspace_id, status`** - `DunningService` queries by workspace and status frequently.
|
||||
|
||||
- [ ] **Optimise subscription expiry query** - `SubscriptionService::processExpired()` loads all matching subscriptions. Use chunking for large datasets.
|
||||
|
||||
- [ ] **Cache exchange rates in-memory** - `ExchangeRate::convert()` hits DB on every call. Add short-lived cache.
|
||||
|
||||
- [ ] **Add eager loading to order/invoice queries** - Several Livewire components load orders without eager loading items/payments, causing N+1.
|
||||
|
||||
### Code Quality
|
||||
|
||||
- [ ] **Extract TaxResult to Data/ directory** - Currently embedded in `TaxService.php`. Move to `Data/TaxResult.php` for consistency with other DTOs.
|
||||
|
||||
- [ ] **Add return types to gateway contract methods** - `PaymentGatewayContract::refund()` returns array but should have a `RefundResult` DTO.
|
||||
|
||||
- [ ] **Consolidate order status transitions** - Status changes scattered across models and services. Create `OrderStateMachine` class.
|
||||
|
||||
- [ ] **Remove duplicate customer creation logic** - Both `CommerceService::ensureCustomer()` and gateway methods create customers. Consolidate.
|
||||
|
||||
- [ ] **Standardise money handling** - Mix of `float`, `decimal:2` casts, and `int` cents. Consider using `brick/money` package.
|
||||
|
||||
### DX Improvements
|
||||
|
||||
- [ ] **Add commerce:health Artisan command** - Check gateway connectivity, webhook configuration, pending dunning items.
|
||||
|
||||
- [ ] **Add commerce:simulate-webhook command** - For local testing of webhook handlers without real payments.
|
||||
|
||||
- [ ] **Document SKU format and lineage system** - Complex M1/M2/M3 hierarchy lacks examples. Add to CLAUDE.md or docs/.
|
||||
|
||||
- [ ] **Add typed properties to Livewire components** - Several use `public $variable` without types, causing IDE warnings.
|
||||
|
||||
### Observability
|
||||
|
||||
- [ ] **Add metrics for payment success/failure rates** - No Prometheus/StatsD integration for monitoring conversion rates.
|
||||
|
||||
- [ ] **Add structured logging to webhook handlers** - Current logs use ad-hoc format. Standardise with correlation IDs.
|
||||
|
||||
- [ ] **Add tracing spans for checkout flow** - No distributed tracing for debugging slow checkouts.
|
||||
|
||||
---
|
||||
|
||||
## P4 - Low Priority
|
||||
|
||||
### UI/UX
|
||||
|
||||
- [ ] **Add loading states to checkout Livewire components** - Button clicks don't show loading indicator during gateway calls.
|
||||
|
||||
- [ ] **Add subscription change confirmation modal** - `ChangePlan` component immediately processes; should confirm proration amount first.
|
||||
|
||||
- [ ] **Improve invoice PDF design** - Current template is basic. Add company branding, better line item formatting.
|
||||
|
||||
- [ ] **Add currency selector persistence** - `CurrencySelector` component sets session but doesn't persist to user preferences.
|
||||
|
||||
### Features (Nice to Have)
|
||||
|
||||
- [ ] **Add subscription pause scheduling** - Currently pause is immediate. Allow "pause starting next billing period".
|
||||
|
||||
- [ ] **Add invoice PDF caching** - Regenerates PDF on every download. Cache generated PDFs on disk.
|
||||
|
||||
- [ ] **Add webhook event viewer in admin** - `WebhookEvent` model exists but no admin UI to browse/retry events.
|
||||
|
||||
- [ ] **Add referral analytics dashboard** - Basic stats exist but no charts/trends visualization.
|
||||
|
||||
- [ ] **Support tax-inclusive pricing** - Config supports it but implementation assumes tax-exclusive.
|
||||
|
||||
### Technical Debt
|
||||
|
||||
- [ ] **Rename View/Modal/ to View/Livewire/** - Current naming is confusing (not all are modals).
|
||||
|
||||
- [ ] **Move factories to database/factories/** - Reference to `Database\Factories\OrderFactory` but factories may be missing.
|
||||
|
||||
- [ ] **Add strict types to all files** - Some files missing `declare(strict_types=1)`.
|
||||
|
||||
- [ ] **Update Carbon usage for v3 compatibility** - Some `diffInDays` calls may behave differently in Carbon 3.
|
||||
|
||||
---
|
||||
|
||||
## P5 - Nice to Have / Future
|
||||
|
||||
### Integrations
|
||||
|
||||
- [ ] **Add PayPal gateway** - For regions where BTCPay/Stripe aren't preferred.
|
||||
|
||||
- [ ] **Add accounting software export** - Xero/QuickBooks invoice sync.
|
||||
|
||||
- [ ] **Add email receipt provider integration** - Currently uses Laravel mail; consider dedicated receipt service.
|
||||
|
||||
### Advanced Features
|
||||
|
||||
- [ ] **Add subscription gifting** - Allow users to gift subscriptions to others.
|
||||
|
||||
- [ ] **Add group/team billing** - Multiple workspaces under one billing account.
|
||||
|
||||
- [ ] **Add usage alerts with thresholds** - Config has `usage_threshold_alerts` but no notification implementation.
|
||||
|
||||
- [ ] **Add dynamic pricing rules** - Volume discounts, time-based pricing changes.
|
||||
|
||||
---
|
||||
|
||||
## P6+ - Backlog / Ideas
|
||||
|
||||
- [ ] **Consider Paddle as alternative to Stripe** - For simplified EU VAT handling.
|
||||
- [ ] **Research revenue recognition requirements** - ASC 606 compliance for enterprise customers.
|
||||
- [ ] **Evaluate tax automation providers** - TaxJar, Avalara for complex tax scenarios.
|
||||
- [ ] **Multi-entity billing consolidation** - Single invoice for M1 covering all M2/M3 transactions.
|
||||
|
||||
---
|
||||
|
||||
## Completed
|
||||
|
||||
### 2026-01-29 - Webhook Security Fixes
|
||||
|
||||
- **Add idempotency handling for BTCPay/Stripe webhooks** - Added `isAlreadyProcessed()` check to both webhook controllers. Created `webhook_events` table with unique constraint on `(gateway, event_id)` for deduplication.
|
||||
|
||||
- **Add webhook replay protection window** - Webhook events stored permanently with status tracking. Processed/skipped events are rejected on subsequent attempts.
|
||||
|
||||
- **Add amount verification for BTCPay settlements** - New `verifyPaymentAmount()` method validates paid amount against order total. Underpayments rejected, overpayments logged.
|
||||
|
||||
- **Add currency mismatch detection** - Currency validation added to payment verification. Mismatched currencies result in order failure.
|
||||
|
||||
---
|
||||
|
||||
## Notes
|
||||
|
||||
- Priority levels: P1 (critical/security) through P6+ (backlog)
|
||||
- Each item should be an isolated unit of work
|
||||
- Security items should be addressed before public launch
|
||||
- Tests should accompany all feature changes
|
||||
402
docs/architecture.md
Normal file
402
docs/architecture.md
Normal file
|
|
@ -0,0 +1,402 @@
|
|||
---
|
||||
title: Architecture
|
||||
description: Technical architecture of the core-commerce package
|
||||
updated: 2026-01-29
|
||||
---
|
||||
|
||||
# Commerce Architecture
|
||||
|
||||
This document describes the technical architecture of the `core-commerce` package, which provides billing, subscriptions, and payment processing for the Host UK platform.
|
||||
|
||||
## Overview
|
||||
|
||||
The commerce module implements a multi-gateway payment system supporting cryptocurrency (BTCPay) and traditional card payments (Stripe). It handles the complete commerce lifecycle from checkout to recurring billing, dunning, and refunds.
|
||||
|
||||
```
|
||||
┌─────────────────────────────────────────────────────────────────┐
|
||||
│ Commerce Module │
|
||||
├─────────────────────────────────────────────────────────────────┤
|
||||
│ Services Layer │
|
||||
│ ┌─────────────┐ ┌──────────────┐ ┌───────────────┐ │
|
||||
│ │ Commerce │ │ Subscription │ │ Dunning │ │
|
||||
│ │ Service │ │ Service │ │ Service │ │
|
||||
│ └─────────────┘ └──────────────┘ └───────────────┘ │
|
||||
│ ┌─────────────┐ ┌──────────────┐ ┌───────────────┐ │
|
||||
│ │ Invoice │ │ Coupon │ │ Tax │ │
|
||||
│ │ Service │ │ Service │ │ Service │ │
|
||||
│ └─────────────┘ └──────────────┘ └───────────────┘ │
|
||||
├─────────────────────────────────────────────────────────────────┤
|
||||
│ Gateway Layer │
|
||||
│ ┌──────────────────────┐ ┌──────────────────────┐ │
|
||||
│ │ BTCPayGateway │ │ StripeGateway │ │
|
||||
│ │ (Primary) │ │ (Secondary) │ │
|
||||
│ └──────────────────────┘ └──────────────────────┘ │
|
||||
│ │ │ │
|
||||
│ └────────────┬─────────────┘ │
|
||||
│ │ │
|
||||
│ ┌────────────▼─────────────┐ │
|
||||
│ │ PaymentGatewayContract │ │
|
||||
│ └──────────────────────────┘ │
|
||||
└─────────────────────────────────────────────────────────────────┘
|
||||
```
|
||||
|
||||
## Core Concepts
|
||||
|
||||
### Orderable Interface
|
||||
|
||||
The commerce system uses polymorphic relationships via the `Orderable` contract. Both `Workspace` and `User` models can place orders, enabling:
|
||||
|
||||
- **Workspace orders**: Subscription packages, team features
|
||||
- **User orders**: Individual boosts, one-time purchases
|
||||
|
||||
```php
|
||||
interface Orderable
|
||||
{
|
||||
public function getBillingName(): string;
|
||||
public function getBillingEmail(): string;
|
||||
public function getBillingAddress(): array;
|
||||
public function getTaxCountry(): ?string;
|
||||
}
|
||||
```
|
||||
|
||||
### Order Lifecycle
|
||||
|
||||
```
|
||||
┌──────────┐ ┌────────────┐ ┌──────────┐ ┌────────┐
|
||||
│ pending │───▶│ processing │───▶│ paid │───▶│refunded│
|
||||
└──────────┘ └────────────┘ └──────────┘ └────────┘
|
||||
│ │
|
||||
│ │
|
||||
▼ ▼
|
||||
┌──────────┐ ┌──────────┐
|
||||
│cancelled │ │ failed │
|
||||
└──────────┘ └──────────┘
|
||||
```
|
||||
|
||||
1. **pending**: Order created, awaiting checkout
|
||||
2. **processing**: Customer redirected to payment gateway
|
||||
3. **paid**: Payment confirmed, entitlements provisioned
|
||||
4. **failed**: Payment declined or expired
|
||||
5. **cancelled**: Customer abandoned checkout
|
||||
6. **refunded**: Full refund processed
|
||||
|
||||
### Subscription States
|
||||
|
||||
```
|
||||
┌────────┐ ┌──────────┐ ┌────────┐ ┌───────────┐
|
||||
│ active │───▶│ past_due │───▶│ paused │───▶│ cancelled │
|
||||
└────────┘ └──────────┘ └────────┘ └───────────┘
|
||||
│ │ │
|
||||
▼ │ │
|
||||
┌──────────┐ │ │
|
||||
│ trialing │────────┘ │
|
||||
└──────────┘ │
|
||||
│ │
|
||||
└─────────────────────────────┘
|
||||
```
|
||||
|
||||
- **active**: Subscription in good standing
|
||||
- **trialing**: Within trial period (no payment required)
|
||||
- **past_due**: Payment failed, within retry window
|
||||
- **paused**: Billing paused (dunning or user-initiated)
|
||||
- **cancelled**: Subscription ended
|
||||
|
||||
## Service Layer
|
||||
|
||||
### CommerceService
|
||||
|
||||
Main orchestration service. Coordinates order creation, checkout, and fulfillment.
|
||||
|
||||
```php
|
||||
// Create an order
|
||||
$order = $commerce->createOrder($workspace, $package, 'monthly', $coupon);
|
||||
|
||||
// Create checkout session (redirects to gateway)
|
||||
$checkout = $commerce->createCheckout($order, 'btcpay', $successUrl, $cancelUrl);
|
||||
|
||||
// Fulfill order after payment (called by webhook)
|
||||
$commerce->fulfillOrder($order, $payment);
|
||||
```
|
||||
|
||||
Key responsibilities:
|
||||
- Gateway selection and initialization
|
||||
- Customer management across gateways
|
||||
- Order-to-entitlement provisioning
|
||||
- Currency formatting and conversion
|
||||
|
||||
### SubscriptionService
|
||||
|
||||
Manages subscription lifecycle without gateway interaction.
|
||||
|
||||
```php
|
||||
// Create local subscription record
|
||||
$subscription = $subscriptions->create($workspacePackage, 'monthly');
|
||||
|
||||
// Handle plan changes with proration
|
||||
$result = $subscriptions->changePlan($subscription, $newPackage, prorate: true);
|
||||
|
||||
// Pause/unpause with limits
|
||||
$subscriptions->pause($subscription);
|
||||
$subscriptions->unpause($subscription);
|
||||
```
|
||||
|
||||
Proration calculation:
|
||||
```
|
||||
creditAmount = currentPrice * (daysRemaining / totalPeriodDays)
|
||||
proratedNewCost = newPrice * (daysRemaining / totalPeriodDays)
|
||||
netAmount = proratedNewCost - creditAmount
|
||||
```
|
||||
|
||||
### DunningService
|
||||
|
||||
Handles failed payment recovery with exponential backoff.
|
||||
|
||||
```
|
||||
Day 0: Payment fails → subscription marked past_due
|
||||
Day 1: First retry
|
||||
Day 3: Second retry
|
||||
Day 7: Third retry → subscription paused
|
||||
Day 14: Workspace suspended (features restricted)
|
||||
Day 30: Subscription cancelled
|
||||
```
|
||||
|
||||
Configuration in `config.php`:
|
||||
```php
|
||||
'dunning' => [
|
||||
'retry_days' => [1, 3, 7],
|
||||
'suspend_after_days' => 14,
|
||||
'cancel_after_days' => 30,
|
||||
'initial_grace_hours' => 24,
|
||||
],
|
||||
```
|
||||
|
||||
### TaxService
|
||||
|
||||
Jurisdiction-based tax calculation supporting:
|
||||
- UK VAT (20%)
|
||||
- EU VAT via VIES validation
|
||||
- US state sales tax (nexus-based)
|
||||
- Australian GST (10%)
|
||||
|
||||
B2B reverse charge is applied automatically when a valid VAT number is provided for EU customers.
|
||||
|
||||
```php
|
||||
$taxResult = $taxService->calculate($workspace, $amount);
|
||||
// Returns: TaxResult with taxAmount, taxRate, jurisdiction, isExempt
|
||||
```
|
||||
|
||||
## Payment Gateways
|
||||
|
||||
### PaymentGatewayContract
|
||||
|
||||
All gateways implement this interface ensuring consistent behavior:
|
||||
|
||||
```php
|
||||
interface PaymentGatewayContract
|
||||
{
|
||||
// Identity
|
||||
public function getIdentifier(): string;
|
||||
public function isEnabled(): bool;
|
||||
|
||||
// Customer management
|
||||
public function createCustomer(Workspace $workspace): string;
|
||||
|
||||
// Checkout
|
||||
public function createCheckoutSession(Order $order, ...): array;
|
||||
public function getCheckoutSession(string $sessionId): array;
|
||||
|
||||
// Payments
|
||||
public function charge(Workspace $workspace, int $amountCents, ...): Payment;
|
||||
public function chargePaymentMethod(PaymentMethod $pm, ...): Payment;
|
||||
|
||||
// Subscriptions
|
||||
public function createSubscription(Workspace $workspace, ...): Subscription;
|
||||
public function cancelSubscription(Subscription $sub, bool $immediately): void;
|
||||
|
||||
// Webhooks
|
||||
public function verifyWebhookSignature(string $payload, string $sig): bool;
|
||||
public function parseWebhookEvent(string $payload): array;
|
||||
}
|
||||
```
|
||||
|
||||
### BTCPayGateway (Primary)
|
||||
|
||||
Cryptocurrency payment gateway supporting BTC, LTC, XMR.
|
||||
|
||||
**Characteristics:**
|
||||
- No saved payment methods (each payment is unique)
|
||||
- No automatic recurring billing (requires customer action)
|
||||
- Invoice-based workflow with expiry
|
||||
- HMAC signature verification for webhooks
|
||||
|
||||
**Webhook Events:**
|
||||
- `InvoiceCreated` → No action
|
||||
- `InvoiceReceivedPayment` → Order status: processing
|
||||
- `InvoiceProcessing` → Waiting for confirmations
|
||||
- `InvoiceSettled` → Fulfill order
|
||||
- `InvoiceExpired` → Mark order failed
|
||||
|
||||
### StripeGateway (Secondary)
|
||||
|
||||
Traditional card payment gateway.
|
||||
|
||||
**Characteristics:**
|
||||
- Saved payment methods for recurring
|
||||
- Automatic subscription billing
|
||||
- Setup intents for card-on-file
|
||||
- Stripe Customer Portal integration
|
||||
|
||||
**Webhook Events:**
|
||||
- `checkout.session.completed` → Fulfill order
|
||||
- `invoice.paid` → Renew subscription
|
||||
- `invoice.payment_failed` → Trigger dunning
|
||||
- `customer.subscription.deleted` → Revoke entitlements
|
||||
|
||||
## Data Models
|
||||
|
||||
### Entity Relationship
|
||||
|
||||
```
|
||||
┌─────────────┐ ┌─────────────┐ ┌─────────────┐
|
||||
│ Workspace │────▶│ Order │────▶│ OrderItem │
|
||||
└─────────────┘ └─────────────┘ └─────────────┘
|
||||
│ │
|
||||
│ ▼
|
||||
│ ┌─────────────┐ ┌─────────────┐
|
||||
│ │ Invoice │────▶│InvoiceItem │
|
||||
│ └─────────────┘ └─────────────┘
|
||||
│ │
|
||||
│ ▼
|
||||
│ ┌─────────────┐ ┌─────────────┐
|
||||
└───────────▶│ Payment │────▶│ Refund │
|
||||
└─────────────┘ └─────────────┘
|
||||
│
|
||||
▼
|
||||
┌─────────────┐ ┌─────────────┐
|
||||
│ Coupon │────▶│ CouponUsage │
|
||||
└─────────────┘ └─────────────┘
|
||||
```
|
||||
|
||||
### Multi-Entity Commerce (M1/M2/M3)
|
||||
|
||||
The commerce module supports a hierarchical entity structure:
|
||||
|
||||
- **M1 (Master Company)**: Source of truth, owns product catalog
|
||||
- **M2 (Facade/Storefront)**: Selects from M1 catalog, can override content
|
||||
- **M3 (Dropshipper)**: Full inheritance, no management responsibility
|
||||
|
||||
```
|
||||
┌─────────┐
|
||||
│ M1 │ ← Product catalog owner
|
||||
└────┬────┘
|
||||
│
|
||||
┌────────┴────────┐
|
||||
│ │
|
||||
┌─────▼─────┐ ┌─────▼─────┐
|
||||
│ M2 │ │ M2 │ ← Storefronts
|
||||
└─────┬─────┘ └───────────┘
|
||||
│
|
||||
┌─────▼─────┐
|
||||
│ M3 │ ← Dropshipper
|
||||
└───────────┘
|
||||
```
|
||||
|
||||
Permission matrix controls which operations each entity type can perform, with a "training mode" for undefined permissions.
|
||||
|
||||
## Event System
|
||||
|
||||
### Domain Events
|
||||
|
||||
```php
|
||||
// Dispatched automatically on model changes
|
||||
SubscriptionCreated::class → RewardAgentReferralOnSubscription
|
||||
SubscriptionRenewed::class → ResetUsageOnRenewal
|
||||
OrderPaid::class → CreateReferralCommission
|
||||
```
|
||||
|
||||
### Listeners
|
||||
|
||||
- `ProvisionSocialHostSubscription`: Product-specific provisioning logic
|
||||
- `RewardAgentReferralOnSubscription`: Attribute referral for new subscriptions
|
||||
- `ResetUsageOnRenewal`: Clear usage counters on billing period reset
|
||||
- `CreateReferralCommission`: Calculate affiliate commission on paid orders
|
||||
|
||||
## Directory Structure
|
||||
|
||||
```
|
||||
core-commerce/
|
||||
├── Boot.php # ServiceProvider, event registration
|
||||
├── config.php # All configuration (currencies, gateways, tax)
|
||||
├── Concerns/ # Traits for models
|
||||
├── Console/ # Artisan commands (dunning, reminders)
|
||||
├── Contracts/ # Interfaces (Orderable)
|
||||
├── Controllers/ # HTTP controllers
|
||||
│ ├── Api/ # REST API endpoints
|
||||
│ └── Webhooks/ # Gateway webhook handlers
|
||||
├── Data/ # DTOs and value objects
|
||||
├── Events/ # Domain events
|
||||
├── Exceptions/ # Custom exceptions
|
||||
├── Jobs/ # Queue jobs
|
||||
├── Lang/ # Translations
|
||||
├── Listeners/ # Event listeners
|
||||
├── Mail/ # Mailable classes
|
||||
├── Mcp/ # MCP tool handlers
|
||||
├── Middleware/ # HTTP middleware
|
||||
├── Migrations/ # Database migrations
|
||||
├── Models/ # Eloquent models
|
||||
├── Notifications/ # Laravel notifications
|
||||
├── routes/ # Route definitions
|
||||
├── Services/ # Business logic layer
|
||||
│ └── PaymentGateway/ # Gateway implementations
|
||||
├── tests/ # Pest tests
|
||||
└── View/ # Blade templates and Livewire components
|
||||
├── Blade/ # Blade templates
|
||||
└── Modal/ # Livewire components (Admin/Web)
|
||||
```
|
||||
|
||||
## Configuration
|
||||
|
||||
All commerce configuration lives in `config.php`:
|
||||
|
||||
```php
|
||||
return [
|
||||
'currency' => 'GBP', // Default currency
|
||||
'currencies' => [...], // Supported currencies, exchange rates
|
||||
'gateways' => [
|
||||
'btcpay' => [...], // Primary gateway
|
||||
'stripe' => [...], // Secondary gateway
|
||||
],
|
||||
'billing' => [...], // Invoice prefixes, due days
|
||||
'dunning' => [...], // Retry schedule, suspension timing
|
||||
'tax' => [...], // Tax rates, VAT validation
|
||||
'subscriptions' => [...], // Proration, pause limits
|
||||
'checkout' => [...], // Session TTL, country restrictions
|
||||
'features' => [...], // Toggle coupons, refunds, trials
|
||||
'usage_billing' => [...], // Metered billing settings
|
||||
'matrix' => [...], // M1/M2/M3 permission matrix
|
||||
];
|
||||
```
|
||||
|
||||
## Testing
|
||||
|
||||
Tests use Pest with `RefreshDatabase` trait:
|
||||
|
||||
```bash
|
||||
# Run all tests
|
||||
composer test
|
||||
|
||||
# Run specific test file
|
||||
vendor/bin/pest tests/Feature/CheckoutFlowTest.php
|
||||
|
||||
# Run tests matching pattern
|
||||
vendor/bin/pest --filter="proration"
|
||||
```
|
||||
|
||||
Test categories:
|
||||
- `CheckoutFlowTest`: End-to-end order flow
|
||||
- `SubscriptionServiceTest`: Subscription lifecycle, proration
|
||||
- `DunningServiceTest`: Payment recovery flows
|
||||
- `WebhookTest`: Gateway webhook handling
|
||||
- `TaxServiceTest`: Tax calculation, VAT validation
|
||||
- `CouponServiceTest`: Discount application
|
||||
- `RefundServiceTest`: Refund processing
|
||||
327
docs/security.md
Normal file
327
docs/security.md
Normal file
|
|
@ -0,0 +1,327 @@
|
|||
---
|
||||
title: Security
|
||||
description: Security considerations and audit notes for core-commerce
|
||||
updated: 2026-01-29
|
||||
---
|
||||
|
||||
# Security Considerations
|
||||
|
||||
This document outlines security controls, known risks, and recommendations for the `core-commerce` package.
|
||||
|
||||
## Authentication & Authorisation
|
||||
|
||||
### API Authentication
|
||||
|
||||
| Endpoint Type | Authentication Method | Notes |
|
||||
|--------------|----------------------|-------|
|
||||
| Webhooks (`/api/webhooks/*`) | HMAC signature | Gateway-specific verification |
|
||||
| Billing API (`/api/commerce/*`) | Laravel `auth` middleware | Session/Sanctum token |
|
||||
| Provisioning API | Bearer token (planned) | Currently commented out |
|
||||
|
||||
### Webhook Security
|
||||
|
||||
Both payment gateways use HMAC signature verification:
|
||||
|
||||
**BTCPay:**
|
||||
```php
|
||||
// Signature in BTCPay-Sig header
|
||||
$expectedSignature = hash_hmac('sha256', $payload, $webhookSecret);
|
||||
hash_equals($expectedSignature, $providedSignature);
|
||||
```
|
||||
|
||||
**Stripe:**
|
||||
```php
|
||||
// Uses Stripe SDK signature verification
|
||||
\Stripe\Webhook::constructEvent($payload, $signature, $webhookSecret);
|
||||
```
|
||||
|
||||
### Current Gaps
|
||||
|
||||
1. **No idempotency enforcement** - Webhook handlers check order state (`isPaid()`) but don't store processed event IDs. Replay attacks within the state-check window are possible.
|
||||
|
||||
2. **No IP allowlisting** - Webhook endpoints accept connections from any IP. Consider adding gateway IP ranges to allowlist.
|
||||
|
||||
3. **Rate limiting is global** - Current throttle (`120,1`) applies globally, not per-IP. A malicious actor could exhaust the limit.
|
||||
|
||||
## Data Protection
|
||||
|
||||
### Sensitive Data Handling
|
||||
|
||||
| Data Type | Storage | Protection |
|
||||
|-----------|---------|------------|
|
||||
| Card details | Never stored | Handled by gateways via redirect |
|
||||
| Gateway API keys | Environment variables | Not in codebase |
|
||||
| Webhook secrets | Environment variables | Used for HMAC |
|
||||
| Tax IDs (VAT numbers) | Encrypted column recommended | Currently plain text |
|
||||
| Billing addresses | Database JSON column | Consider encryption |
|
||||
|
||||
### PCI DSS Compliance
|
||||
|
||||
The commerce module is designed to be **PCI DSS SAQ A** compliant:
|
||||
|
||||
- No card data ever touches Host UK servers
|
||||
- Checkout redirects to hosted payment pages (BTCPay/Stripe)
|
||||
- Only tokenized references (customer IDs, payment method IDs) are stored
|
||||
- No direct card number input in application
|
||||
|
||||
### GDPR Considerations
|
||||
|
||||
Personal data in commerce models:
|
||||
- `orders.billing_name`, `billing_email`, `billing_address`
|
||||
- `invoices.billing_*` fields
|
||||
- `referrals.ip_address`, `user_agent`
|
||||
|
||||
**Recommendations:**
|
||||
- Implement data export for billing history (right of access)
|
||||
- Add retention policy for old orders/invoices
|
||||
- Hash or truncate IP addresses after 90 days
|
||||
- Document lawful basis for processing (contract performance)
|
||||
|
||||
## Input Validation
|
||||
|
||||
### Current Controls
|
||||
|
||||
```php
|
||||
// Coupon codes normalized
|
||||
$data['code'] = strtoupper($data['code']);
|
||||
|
||||
// Order totals calculated server-side
|
||||
$taxResult = $this->taxService->calculateForOrderable($orderable, $taxableAmount);
|
||||
$total = $subtotal - $discountAmount + $setupFee + $taxResult->taxAmount;
|
||||
|
||||
// Gateway responses logged without sensitive data
|
||||
protected function sanitiseErrorMessage($response): string
|
||||
```
|
||||
|
||||
### Validation Gaps
|
||||
|
||||
1. **Billing address structure** - Accepted as array without schema validation
|
||||
2. **Coupon code length** - No maximum length enforcement
|
||||
3. **Metadata fields** - JSON columns accept arbitrary structure
|
||||
|
||||
### Recommendations
|
||||
|
||||
```php
|
||||
// Add validation rules
|
||||
$rules = [
|
||||
'billing_address.line1' => ['required', 'string', 'max:255'],
|
||||
'billing_address.city' => ['required', 'string', 'max:100'],
|
||||
'billing_address.country' => ['required', 'string', 'size:2'],
|
||||
'billing_address.postal_code' => ['required', 'string', 'max:20'],
|
||||
'coupon_code' => ['nullable', 'string', 'max:32', 'alpha_dash'],
|
||||
];
|
||||
```
|
||||
|
||||
## Transaction Security
|
||||
|
||||
### Idempotency
|
||||
|
||||
Order creation supports idempotency keys:
|
||||
|
||||
```php
|
||||
if ($idempotencyKey) {
|
||||
$existingOrder = Order::where('idempotency_key', $idempotencyKey)->first();
|
||||
if ($existingOrder) {
|
||||
return $existingOrder;
|
||||
}
|
||||
}
|
||||
```
|
||||
|
||||
**Gap:** Webhooks don't use idempotency. Add `WebhookEvent` lookup:
|
||||
|
||||
```php
|
||||
if (WebhookEvent::where('idempotency_key', $event['id'])->exists()) {
|
||||
return response('Already processed', 200);
|
||||
}
|
||||
```
|
||||
|
||||
### Race Conditions
|
||||
|
||||
**Identified risks:**
|
||||
|
||||
1. **Concurrent subscription operations** - Pause/unpause/cancel without locks
|
||||
2. **Coupon redemption** - `incrementUsage()` without atomic check
|
||||
3. **Payout requests** - Commission assignment without row locks
|
||||
|
||||
**Mitigation:** Add `FOR UPDATE` locks or use atomic operations:
|
||||
|
||||
```php
|
||||
// Use DB::transaction with locking
|
||||
$commission = ReferralCommission::lockForUpdate()
|
||||
->where('id', $commissionId)
|
||||
->where('status', 'matured')
|
||||
->first();
|
||||
```
|
||||
|
||||
### Amount Verification
|
||||
|
||||
**Current state:** BTCPay webhook trusts order total without verifying against gateway response.
|
||||
|
||||
**Risk:** Under/overpayment handling undefined.
|
||||
|
||||
**Recommendation:**
|
||||
```php
|
||||
$settledAmount = $invoiceData['raw']['amount'] ?? null;
|
||||
if ($settledAmount !== null && abs($settledAmount - $order->total) > 0.01) {
|
||||
Log::warning('Payment amount mismatch', [
|
||||
'order_total' => $order->total,
|
||||
'settled_amount' => $settledAmount,
|
||||
]);
|
||||
// Handle partial payment or overpayment
|
||||
}
|
||||
```
|
||||
|
||||
## Fraud Prevention
|
||||
|
||||
### Current Controls
|
||||
|
||||
- Checkout session TTL (30 minutes default)
|
||||
- Rate limiting on API endpoints
|
||||
- Idempotency keys for order creation
|
||||
|
||||
### Missing Controls
|
||||
|
||||
1. **Velocity checks** - No detection of rapid-fire order attempts
|
||||
2. **Geo-blocking** - No IP geolocation validation against billing country
|
||||
3. **Card testing detection** - No small-amount charge pattern detection
|
||||
4. **Device fingerprinting** - No device/browser tracking
|
||||
|
||||
### Recommendations
|
||||
|
||||
```php
|
||||
// Add CheckoutRateLimiter to createCheckout
|
||||
$rateLimiter = app(CheckoutRateLimiter::class);
|
||||
if (!$rateLimiter->attempt($workspace->id)) {
|
||||
throw new TooManyCheckoutAttemptsException();
|
||||
}
|
||||
|
||||
// Consider Stripe Radar for card payments
|
||||
'stripe' => [
|
||||
'radar_enabled' => true,
|
||||
'block_threshold' => 75, // Block if risk score > 75
|
||||
],
|
||||
```
|
||||
|
||||
## Audit Logging
|
||||
|
||||
### What's Logged
|
||||
|
||||
- Order status changes via `LogsActivity` trait
|
||||
- Subscription status changes via `LogsActivity` trait
|
||||
- Webhook events via `WebhookLogger` service
|
||||
- Payment failures and retries
|
||||
|
||||
### What's Not Logged
|
||||
|
||||
- Failed authentication attempts on billing API
|
||||
- Coupon validation failures
|
||||
- Tax ID validation API calls
|
||||
- Admin actions on refunds/credit notes
|
||||
|
||||
### Recommendations
|
||||
|
||||
Add audit events for:
|
||||
```php
|
||||
// Sensitive operations
|
||||
activity('commerce')
|
||||
->causedBy($admin)
|
||||
->performedOn($refund)
|
||||
->withProperties(['reason' => $reason])
|
||||
->log('Refund processed');
|
||||
```
|
||||
|
||||
## Secrets Management
|
||||
|
||||
### Environment Variables
|
||||
|
||||
```bash
|
||||
# Gateway credentials
|
||||
BTCPAY_URL=https://pay.host.uk.com
|
||||
BTCPAY_STORE_ID=xxx
|
||||
BTCPAY_API_KEY=xxx
|
||||
BTCPAY_WEBHOOK_SECRET=xxx
|
||||
|
||||
STRIPE_KEY=pk_xxx
|
||||
STRIPE_SECRET=sk_xxx
|
||||
STRIPE_WEBHOOK_SECRET=whsec_xxx
|
||||
|
||||
# Tax API credentials
|
||||
COMMERCE_EXCHANGE_RATE_API_KEY=xxx
|
||||
```
|
||||
|
||||
### Key Rotation
|
||||
|
||||
No automated key rotation currently implemented.
|
||||
|
||||
**Recommendations:**
|
||||
- Store credentials in secrets manager (AWS Secrets Manager, HashiCorp Vault)
|
||||
- Implement webhook secret rotation with grace period
|
||||
- Alert on API key exposure in logs
|
||||
|
||||
## Security Checklist
|
||||
|
||||
### Before Production
|
||||
|
||||
- [ ] Webhook secrets are unique per environment
|
||||
- [ ] Rate limiting tuned for expected traffic
|
||||
- [ ] Error messages don't leak internal details
|
||||
- [ ] API keys not in version control
|
||||
- [ ] SSL/TLS required for all endpoints
|
||||
|
||||
### Ongoing
|
||||
|
||||
- [ ] Monitor webhook failure rates
|
||||
- [ ] Review failed payment patterns weekly
|
||||
- [ ] Audit refund activity monthly
|
||||
- [ ] Update gateway SDKs quarterly
|
||||
- [ ] Penetration test annually
|
||||
|
||||
## Incident Response
|
||||
|
||||
### Compromised API Key
|
||||
|
||||
1. Revoke key immediately in gateway dashboard
|
||||
2. Generate new key
|
||||
3. Update environment variable
|
||||
4. Restart application
|
||||
5. Audit recent transactions for anomalies
|
||||
|
||||
### Webhook Secret Leaked
|
||||
|
||||
1. Generate new secret in gateway
|
||||
2. Update both old and new in config (grace period)
|
||||
3. Monitor for invalid signature attempts
|
||||
4. Remove old secret after 24 hours
|
||||
|
||||
### Suspected Fraud
|
||||
|
||||
1. Pause affected subscription
|
||||
2. Flag orders for manual review
|
||||
3. Contact gateway for chargeback advice
|
||||
4. Document in incident log
|
||||
|
||||
## Third-Party Dependencies
|
||||
|
||||
### Gateway SDKs
|
||||
|
||||
| Package | Version | Security Notes |
|
||||
|---------|---------|----------------|
|
||||
| `stripe/stripe-php` | ^12.0 | Keep updated for security patches |
|
||||
|
||||
### Other Dependencies
|
||||
|
||||
- `spatie/laravel-activitylog` - Audit logging
|
||||
- `barryvdh/laravel-dompdf` - PDF generation (ensure no user input in HTML)
|
||||
|
||||
### Dependency Audit
|
||||
|
||||
Run regularly:
|
||||
```bash
|
||||
composer audit
|
||||
```
|
||||
|
||||
## Contact
|
||||
|
||||
Report security issues to: security@host.uk.com
|
||||
|
||||
Do not open public issues for security vulnerabilities.
|
||||
387
docs/webhooks.md
Normal file
387
docs/webhooks.md
Normal file
|
|
@ -0,0 +1,387 @@
|
|||
---
|
||||
title: Webhooks
|
||||
description: Payment gateway webhook handling documentation
|
||||
updated: 2026-01-29
|
||||
---
|
||||
|
||||
# Webhook Handling
|
||||
|
||||
This document describes how payment gateway webhooks are processed in the commerce module.
|
||||
|
||||
## Overview
|
||||
|
||||
Payment gateways notify the application of payment events via webhooks. These are HTTP POST requests sent to predefined endpoints when payment state changes.
|
||||
|
||||
```
|
||||
┌──────────────┐ ┌──────────────┐ ┌──────────────┐
|
||||
│ BTCPay │ │ Host UK │ │ Stripe │
|
||||
│ Server │ │ Commerce │ │ API │
|
||||
└──────┬───────┘ └──────┬───────┘ └──────┬───────┘
|
||||
│ │ │
|
||||
│ POST /api/webhooks/ │ │
|
||||
│ btcpay │ │
|
||||
│ ───────────────────────▶│ │
|
||||
│ │ │
|
||||
│ │ POST /api/webhooks/ │
|
||||
│ │ stripe │
|
||||
│ │◀─────────────────────────
|
||||
│ │ │
|
||||
```
|
||||
|
||||
## Endpoints
|
||||
|
||||
| Gateway | Endpoint | Signature Header |
|
||||
|---------|----------|------------------|
|
||||
| BTCPay | `POST /api/webhooks/btcpay` | `BTCPay-Sig` |
|
||||
| Stripe | `POST /api/webhooks/stripe` | `Stripe-Signature` |
|
||||
|
||||
Both endpoints:
|
||||
- Rate limited: 120 requests per minute
|
||||
- No authentication middleware (signature verification only)
|
||||
- Return 200 for successful processing (even if event is skipped)
|
||||
- Return 401 for invalid signatures
|
||||
- Return 500 for processing errors (triggers gateway retry)
|
||||
|
||||
## BTCPay Webhooks
|
||||
|
||||
### Configuration
|
||||
|
||||
In BTCPay Server dashboard:
|
||||
1. Navigate to Store Settings > Webhooks
|
||||
2. Create webhook with URL: `https://yourdomain.com/api/webhooks/btcpay`
|
||||
3. Select events to send
|
||||
4. Copy webhook secret to `BTCPAY_WEBHOOK_SECRET`
|
||||
|
||||
### Event Types
|
||||
|
||||
| BTCPay Event | Mapped Type | Action |
|
||||
|--------------|-------------|--------|
|
||||
| `InvoiceCreated` | `invoice.created` | No action |
|
||||
| `InvoiceReceivedPayment` | `invoice.payment_received` | Order → processing |
|
||||
| `InvoiceProcessing` | `invoice.processing` | Order → processing |
|
||||
| `InvoiceSettled` | `invoice.paid` | Fulfil order |
|
||||
| `InvoiceExpired` | `invoice.expired` | Order → failed |
|
||||
| `InvoiceInvalid` | `invoice.failed` | Order → failed |
|
||||
|
||||
### Processing Flow
|
||||
|
||||
```php
|
||||
// BTCPayWebhookController::handle()
|
||||
|
||||
1. Verify signature
|
||||
└── 401 if invalid
|
||||
|
||||
2. Parse event
|
||||
└── Extract type, invoice ID, metadata
|
||||
|
||||
3. Log webhook event
|
||||
└── WebhookLogger creates audit record
|
||||
|
||||
4. Route to handler (in transaction)
|
||||
├── invoice.paid → handleSettled()
|
||||
├── invoice.expired → handleExpired()
|
||||
└── default → handleUnknownEvent()
|
||||
|
||||
5. Return response
|
||||
└── 200 OK (even for skipped events)
|
||||
```
|
||||
|
||||
### Invoice Settlement Handler
|
||||
|
||||
```php
|
||||
protected function handleSettled(array $event): Response
|
||||
{
|
||||
// 1. Find order by gateway session ID
|
||||
$order = Order::where('gateway', 'btcpay')
|
||||
->where('gateway_session_id', $event['id'])
|
||||
->first();
|
||||
|
||||
// 2. Skip if already paid (idempotency)
|
||||
if ($order->isPaid()) {
|
||||
return response('Already processed', 200);
|
||||
}
|
||||
|
||||
// 3. Create payment record
|
||||
$payment = Payment::create([
|
||||
'gateway' => 'btcpay',
|
||||
'gateway_payment_id' => $event['id'],
|
||||
'amount' => $order->total,
|
||||
'status' => 'succeeded',
|
||||
// ...
|
||||
]);
|
||||
|
||||
// 4. Fulfil order (provisions entitlements, creates invoice)
|
||||
$this->commerce->fulfillOrder($order, $payment);
|
||||
|
||||
// 5. Send confirmation email
|
||||
$this->sendOrderConfirmation($order);
|
||||
|
||||
return response('OK', 200);
|
||||
}
|
||||
```
|
||||
|
||||
## Stripe Webhooks
|
||||
|
||||
### Configuration
|
||||
|
||||
In Stripe Dashboard:
|
||||
1. Navigate to Developers > Webhooks
|
||||
2. Add endpoint: `https://yourdomain.com/api/webhooks/stripe`
|
||||
3. Select events to listen for
|
||||
4. Copy signing secret to `STRIPE_WEBHOOK_SECRET`
|
||||
|
||||
### Event Types
|
||||
|
||||
| Stripe Event | Action |
|
||||
|--------------|--------|
|
||||
| `checkout.session.completed` | Fulfil order, create subscription |
|
||||
| `invoice.paid` | Renew subscription period |
|
||||
| `invoice.payment_failed` | Mark past_due, trigger dunning |
|
||||
| `customer.subscription.created` | Fallback (usually handled by checkout) |
|
||||
| `customer.subscription.updated` | Sync status, period dates |
|
||||
| `customer.subscription.deleted` | Cancel, revoke entitlements |
|
||||
| `payment_method.attached` | Store payment method |
|
||||
| `payment_method.detached` | Deactivate payment method |
|
||||
| `payment_method.updated` | Update card details |
|
||||
| `setup_intent.succeeded` | Attach payment method from setup flow |
|
||||
|
||||
### Checkout Completion Handler
|
||||
|
||||
```php
|
||||
protected function handleCheckoutCompleted(array $event): Response
|
||||
{
|
||||
$session = $event['raw']['data']['object'];
|
||||
$orderId = $session['metadata']['order_id'];
|
||||
|
||||
// Find and validate order
|
||||
$order = Order::find($orderId);
|
||||
if (!$order || $order->isPaid()) {
|
||||
return response('Already processed', 200);
|
||||
}
|
||||
|
||||
// Create payment record
|
||||
$payment = Payment::create([
|
||||
'gateway' => 'stripe',
|
||||
'gateway_payment_id' => $session['payment_intent'],
|
||||
'amount' => $session['amount_total'] / 100,
|
||||
'status' => 'succeeded',
|
||||
]);
|
||||
|
||||
// Handle subscription if present
|
||||
if (!empty($session['subscription'])) {
|
||||
$this->createOrUpdateSubscriptionFromSession($order, $session);
|
||||
}
|
||||
|
||||
// Fulfil order
|
||||
$this->commerce->fulfillOrder($order, $payment);
|
||||
|
||||
return response('OK', 200);
|
||||
}
|
||||
```
|
||||
|
||||
### Subscription Invoice Handler
|
||||
|
||||
```php
|
||||
protected function handleInvoicePaid(array $event): Response
|
||||
{
|
||||
$invoice = $event['raw']['data']['object'];
|
||||
$subscriptionId = $invoice['subscription'];
|
||||
|
||||
// Find subscription
|
||||
$subscription = Subscription::where('gateway', 'stripe')
|
||||
->where('gateway_subscription_id', $subscriptionId)
|
||||
->first();
|
||||
|
||||
// Update period dates
|
||||
$subscription->renew(
|
||||
Carbon::createFromTimestamp($invoice['period_start']),
|
||||
Carbon::createFromTimestamp($invoice['period_end'])
|
||||
);
|
||||
|
||||
// Create payment record
|
||||
$payment = Payment::create([...]);
|
||||
|
||||
// Create local invoice
|
||||
$this->invoiceService->createForRenewal($subscription->workspace, ...);
|
||||
|
||||
return response('OK', 200);
|
||||
}
|
||||
```
|
||||
|
||||
## Signature Verification
|
||||
|
||||
### BTCPay
|
||||
|
||||
```php
|
||||
// BTCPayGateway::verifyWebhookSignature()
|
||||
|
||||
$providedSignature = $signature;
|
||||
if (str_starts_with($signature, 'sha256=')) {
|
||||
$providedSignature = substr($signature, 7);
|
||||
}
|
||||
|
||||
$expectedSignature = hash_hmac('sha256', $payload, $this->webhookSecret);
|
||||
|
||||
return hash_equals($expectedSignature, $providedSignature);
|
||||
```
|
||||
|
||||
### Stripe
|
||||
|
||||
```php
|
||||
// StripeGateway::verifyWebhookSignature()
|
||||
|
||||
try {
|
||||
\Stripe\Webhook::constructEvent($payload, $signature, $this->webhookSecret);
|
||||
return true;
|
||||
} catch (\Exception $e) {
|
||||
return false;
|
||||
}
|
||||
```
|
||||
|
||||
## Webhook Logging
|
||||
|
||||
All webhook events are logged via `WebhookLogger`:
|
||||
|
||||
```php
|
||||
// Start logging
|
||||
$this->webhookLogger->startFromParsedEvent('btcpay', $event, $payload, $request);
|
||||
|
||||
// Link to entities for audit trail
|
||||
$this->webhookLogger->linkOrder($order);
|
||||
$this->webhookLogger->linkSubscription($subscription);
|
||||
|
||||
// Mark outcome
|
||||
$this->webhookLogger->success($response);
|
||||
$this->webhookLogger->fail($errorMessage, $statusCode);
|
||||
$this->webhookLogger->skip($reason);
|
||||
```
|
||||
|
||||
Logged data includes:
|
||||
- Event type and ID
|
||||
- Raw payload (encrypted)
|
||||
- IP address and user agent
|
||||
- Processing outcome
|
||||
- Related order/subscription IDs
|
||||
|
||||
## Error Handling
|
||||
|
||||
### Gateway Retries
|
||||
|
||||
Both gateways retry failed webhooks:
|
||||
|
||||
| Gateway | Retry Schedule | Max Attempts |
|
||||
|---------|---------------|--------------|
|
||||
| BTCPay | Exponential backoff | Configurable |
|
||||
| Stripe | Exponential over 3 days | ~20 attempts |
|
||||
|
||||
**Important:** Return `200 OK` even for events that are skipped or already processed. Only return `500` for actual processing errors that should be retried.
|
||||
|
||||
### Transaction Safety
|
||||
|
||||
All webhook handlers wrap processing in database transactions:
|
||||
|
||||
```php
|
||||
try {
|
||||
$response = DB::transaction(function () use ($event) {
|
||||
return match ($event['type']) {
|
||||
'invoice.paid' => $this->handleSettled($event),
|
||||
// ...
|
||||
};
|
||||
});
|
||||
return $response;
|
||||
} catch (\Exception $e) {
|
||||
Log::error('Webhook processing error', [...]);
|
||||
return response('Processing error', 500);
|
||||
}
|
||||
```
|
||||
|
||||
## Testing Webhooks
|
||||
|
||||
### Local Development
|
||||
|
||||
Use gateway CLI tools to send test webhooks:
|
||||
|
||||
**BTCPay:**
|
||||
```bash
|
||||
# Trigger test webhook from BTCPay admin
|
||||
# Or use btcpay-cli if available
|
||||
```
|
||||
|
||||
**Stripe:**
|
||||
```bash
|
||||
# Forward webhooks to local
|
||||
stripe listen --forward-to localhost:8000/api/webhooks/stripe
|
||||
|
||||
# Trigger specific event
|
||||
stripe trigger checkout.session.completed
|
||||
```
|
||||
|
||||
### Automated Tests
|
||||
|
||||
See `tests/Feature/WebhookTest.php` for webhook handler tests:
|
||||
|
||||
```php
|
||||
test('btcpay settled webhook fulfils order', function () {
|
||||
$order = Order::factory()->create(['status' => 'processing']);
|
||||
|
||||
$payload = json_encode([
|
||||
'type' => 'InvoiceSettled',
|
||||
'invoiceId' => $order->gateway_session_id,
|
||||
// ...
|
||||
]);
|
||||
|
||||
$signature = hash_hmac('sha256', $payload, config('commerce.gateways.btcpay.webhook_secret'));
|
||||
|
||||
$response = $this->postJson('/api/webhooks/btcpay', [], [
|
||||
'BTCPay-Sig' => $signature,
|
||||
'Content-Type' => 'application/json',
|
||||
]);
|
||||
|
||||
$response->assertStatus(200);
|
||||
expect($order->fresh()->status)->toBe('paid');
|
||||
});
|
||||
```
|
||||
|
||||
## Troubleshooting
|
||||
|
||||
### Common Issues
|
||||
|
||||
**401 Invalid Signature**
|
||||
- Check webhook secret matches environment variable
|
||||
- Ensure raw payload is used (not parsed JSON)
|
||||
- Verify signature header name is correct
|
||||
|
||||
**Order Not Found**
|
||||
- Check `gateway_session_id` matches invoice ID
|
||||
- Verify order was created before webhook arrived
|
||||
- Check for typos in metadata passed to gateway
|
||||
|
||||
**Duplicate Processing**
|
||||
- Normal behavior if webhook is retried
|
||||
- Order state check (`isPaid()`) prevents double fulfillment
|
||||
- Consider adding idempotency key storage
|
||||
|
||||
### Debug Logging
|
||||
|
||||
Enable verbose logging temporarily:
|
||||
|
||||
```php
|
||||
// In webhook controller
|
||||
Log::debug('Webhook payload', [
|
||||
'type' => $event['type'],
|
||||
'id' => $event['id'],
|
||||
'raw' => $event['raw'],
|
||||
]);
|
||||
```
|
||||
|
||||
### Webhook Event Viewer
|
||||
|
||||
Query logged events:
|
||||
|
||||
```sql
|
||||
SELECT * FROM commerce_webhook_events
|
||||
WHERE event_type = 'InvoiceSettled'
|
||||
AND status = 'failed'
|
||||
ORDER BY created_at DESC
|
||||
LIMIT 10;
|
||||
```
|
||||
|
|
@ -996,6 +996,417 @@ describe('BTCPayGateway webhook event parsing', function () {
|
|||
});
|
||||
});
|
||||
|
||||
// ============================================================================
|
||||
// Security Tests - Idempotency and Amount Verification
|
||||
// ============================================================================
|
||||
|
||||
describe('Webhook Idempotency (Replay Attack Protection)', function () {
|
||||
describe('BTCPay idempotency', function () {
|
||||
beforeEach(function () {
|
||||
$this->order = Order::create([
|
||||
'workspace_id' => $this->workspace->id,
|
||||
'order_number' => 'ORD-IDEM-BTC-001',
|
||||
'gateway' => 'btcpay',
|
||||
'gateway_session_id' => 'btc_invoice_idem_123',
|
||||
'subtotal' => 49.00,
|
||||
'tax_amount' => 9.80,
|
||||
'total' => 58.80,
|
||||
'currency' => 'GBP',
|
||||
'status' => 'pending',
|
||||
]);
|
||||
|
||||
OrderItem::create([
|
||||
'order_id' => $this->order->id,
|
||||
'name' => 'Test Product',
|
||||
'quantity' => 1,
|
||||
'unit_price' => 49.00,
|
||||
'total' => 49.00,
|
||||
'type' => 'product',
|
||||
]);
|
||||
});
|
||||
|
||||
it('rejects duplicate webhook events (replay attack protection)', function () {
|
||||
// First webhook - should process successfully
|
||||
$eventId = 'btc_event_unique_123';
|
||||
|
||||
// Pre-create a processed webhook event to simulate already processed
|
||||
WebhookEvent::create([
|
||||
'gateway' => 'btcpay',
|
||||
'event_id' => $eventId,
|
||||
'event_type' => 'invoice.paid',
|
||||
'payload' => '{}',
|
||||
'status' => WebhookEvent::STATUS_PROCESSED,
|
||||
'received_at' => now()->subMinutes(5),
|
||||
'processed_at' => now()->subMinutes(5),
|
||||
]);
|
||||
|
||||
$mockGateway = Mockery::mock(BTCPayGateway::class);
|
||||
$mockGateway->shouldReceive('verifyWebhookSignature')->andReturn(true);
|
||||
$mockGateway->shouldReceive('parseWebhookEvent')->andReturn([
|
||||
'type' => 'invoice.paid',
|
||||
'id' => $eventId,
|
||||
'status' => 'succeeded',
|
||||
'metadata' => [],
|
||||
'raw' => [],
|
||||
]);
|
||||
|
||||
$mockCommerce = Mockery::mock(CommerceService::class);
|
||||
// Should NOT receive fulfillOrder because this is a duplicate
|
||||
$mockCommerce->shouldNotReceive('fulfillOrder');
|
||||
|
||||
$webhookLogger = new WebhookLogger;
|
||||
$controller = new BTCPayWebhookController($mockGateway, $mockCommerce, $webhookLogger);
|
||||
|
||||
$request = new \Illuminate\Http\Request;
|
||||
$response = $controller->handle($request);
|
||||
|
||||
expect($response->getStatusCode())->toBe(200)
|
||||
->and($response->getContent())->toBe('Already processed (duplicate)');
|
||||
});
|
||||
|
||||
it('processes first webhook and rejects subsequent duplicates', function () {
|
||||
$eventId = 'btc_event_first_' . uniqid();
|
||||
|
||||
$mockGateway = Mockery::mock(BTCPayGateway::class);
|
||||
$mockGateway->shouldReceive('verifyWebhookSignature')->andReturn(true);
|
||||
$mockGateway->shouldReceive('parseWebhookEvent')->andReturn([
|
||||
'type' => 'invoice.paid',
|
||||
'id' => $eventId,
|
||||
'status' => 'succeeded',
|
||||
'metadata' => [],
|
||||
'raw' => ['invoiceId' => 'btc_invoice_idem_123'],
|
||||
]);
|
||||
$mockGateway->shouldReceive('getCheckoutSession')->once()->andReturn([
|
||||
'id' => 'btc_invoice_idem_123',
|
||||
'status' => 'succeeded',
|
||||
'amount' => 58.80,
|
||||
'currency' => 'GBP',
|
||||
'raw' => ['amount' => 58.80, 'currency' => 'GBP'],
|
||||
]);
|
||||
|
||||
$mockCommerce = Mockery::mock(CommerceService::class);
|
||||
// First call should process
|
||||
$mockCommerce->shouldReceive('fulfillOrder')->once();
|
||||
|
||||
$webhookLogger = new WebhookLogger;
|
||||
$controller = new BTCPayWebhookController($mockGateway, $mockCommerce, $webhookLogger);
|
||||
|
||||
// First request - should process
|
||||
$request1 = new \Illuminate\Http\Request;
|
||||
$response1 = $controller->handle($request1);
|
||||
expect($response1->getStatusCode())->toBe(200);
|
||||
|
||||
// Verify webhook event was logged
|
||||
$webhookEvent = WebhookEvent::where('gateway', 'btcpay')
|
||||
->where('event_id', $eventId)
|
||||
->first();
|
||||
expect($webhookEvent)->not->toBeNull()
|
||||
->and($webhookEvent->status)->toBe(WebhookEvent::STATUS_PROCESSED);
|
||||
|
||||
// Second request with same event ID - should be rejected as duplicate
|
||||
$webhookLogger2 = new WebhookLogger;
|
||||
$controller2 = new BTCPayWebhookController($mockGateway, $mockCommerce, $webhookLogger2);
|
||||
$request2 = new \Illuminate\Http\Request;
|
||||
$response2 = $controller2->handle($request2);
|
||||
|
||||
expect($response2->getStatusCode())->toBe(200)
|
||||
->and($response2->getContent())->toBe('Already processed (duplicate)');
|
||||
|
||||
// Verify order was only fulfilled once (payment count check)
|
||||
$paymentCount = Payment::where('order_id', $this->order->id)->count();
|
||||
expect($paymentCount)->toBe(1);
|
||||
});
|
||||
});
|
||||
|
||||
describe('Stripe idempotency', function () {
|
||||
beforeEach(function () {
|
||||
$this->order = Order::create([
|
||||
'workspace_id' => $this->workspace->id,
|
||||
'order_number' => 'ORD-IDEM-STRIPE-001',
|
||||
'gateway' => 'stripe',
|
||||
'gateway_session_id' => 'cs_idem_123',
|
||||
'subtotal' => 49.00,
|
||||
'tax_amount' => 9.80,
|
||||
'total' => 58.80,
|
||||
'currency' => 'GBP',
|
||||
'status' => 'pending',
|
||||
]);
|
||||
|
||||
OrderItem::create([
|
||||
'order_id' => $this->order->id,
|
||||
'name' => 'Test Product',
|
||||
'quantity' => 1,
|
||||
'unit_price' => 49.00,
|
||||
'total' => 49.00,
|
||||
'type' => 'product',
|
||||
]);
|
||||
});
|
||||
|
||||
it('rejects duplicate Stripe webhook events', function () {
|
||||
$eventId = 'evt_stripe_unique_123';
|
||||
|
||||
// Pre-create a processed webhook event
|
||||
WebhookEvent::create([
|
||||
'gateway' => 'stripe',
|
||||
'event_id' => $eventId,
|
||||
'event_type' => 'checkout.session.completed',
|
||||
'payload' => '{}',
|
||||
'status' => WebhookEvent::STATUS_PROCESSED,
|
||||
'received_at' => now()->subMinutes(5),
|
||||
'processed_at' => now()->subMinutes(5),
|
||||
]);
|
||||
|
||||
$mockGateway = Mockery::mock(StripeGateway::class);
|
||||
$mockGateway->shouldReceive('verifyWebhookSignature')->andReturn(true);
|
||||
$mockGateway->shouldReceive('parseWebhookEvent')->andReturn([
|
||||
'type' => 'checkout.session.completed',
|
||||
'id' => $eventId,
|
||||
'raw' => [
|
||||
'data' => [
|
||||
'object' => [
|
||||
'id' => 'cs_idem_123',
|
||||
'metadata' => ['order_id' => $this->order->id],
|
||||
],
|
||||
],
|
||||
],
|
||||
]);
|
||||
|
||||
$mockCommerce = Mockery::mock(CommerceService::class);
|
||||
$mockCommerce->shouldNotReceive('fulfillOrder');
|
||||
|
||||
$mockInvoice = Mockery::mock(InvoiceService::class);
|
||||
$mockEntitlements = Mockery::mock(EntitlementService::class);
|
||||
$webhookLogger = new WebhookLogger;
|
||||
|
||||
$controller = new StripeWebhookController(
|
||||
$mockGateway,
|
||||
$mockCommerce,
|
||||
$mockInvoice,
|
||||
$mockEntitlements,
|
||||
$webhookLogger
|
||||
);
|
||||
|
||||
$request = new \Illuminate\Http\Request;
|
||||
$response = $controller->handle($request);
|
||||
|
||||
expect($response->getStatusCode())->toBe(200)
|
||||
->and($response->getContent())->toBe('Already processed (duplicate)');
|
||||
});
|
||||
});
|
||||
});
|
||||
|
||||
describe('BTCPay Payment Amount Verification', function () {
|
||||
beforeEach(function () {
|
||||
$this->order = Order::create([
|
||||
'workspace_id' => $this->workspace->id,
|
||||
'order_number' => 'ORD-AMT-001',
|
||||
'gateway' => 'btcpay',
|
||||
'gateway_session_id' => 'btc_invoice_amt_123',
|
||||
'subtotal' => 49.00,
|
||||
'tax_amount' => 9.80,
|
||||
'total' => 58.80,
|
||||
'currency' => 'GBP',
|
||||
'status' => 'pending',
|
||||
]);
|
||||
|
||||
OrderItem::create([
|
||||
'order_id' => $this->order->id,
|
||||
'name' => 'Test Product',
|
||||
'quantity' => 1,
|
||||
'unit_price' => 49.00,
|
||||
'total' => 49.00,
|
||||
'type' => 'product',
|
||||
]);
|
||||
});
|
||||
|
||||
it('fulfils order when paid amount matches order total', function () {
|
||||
$mockGateway = Mockery::mock(BTCPayGateway::class);
|
||||
$mockGateway->shouldReceive('verifyWebhookSignature')->andReturn(true);
|
||||
$mockGateway->shouldReceive('parseWebhookEvent')->andReturn([
|
||||
'type' => 'invoice.paid',
|
||||
'id' => 'btc_invoice_amt_123',
|
||||
'status' => 'succeeded',
|
||||
'metadata' => [],
|
||||
'raw' => ['invoiceId' => 'btc_invoice_amt_123'],
|
||||
]);
|
||||
$mockGateway->shouldReceive('getCheckoutSession')->andReturn([
|
||||
'id' => 'btc_invoice_amt_123',
|
||||
'status' => 'succeeded',
|
||||
'amount' => 58.80,
|
||||
'currency' => 'GBP',
|
||||
'raw' => ['amount' => 58.80, 'currency' => 'GBP'],
|
||||
]);
|
||||
|
||||
$mockCommerce = Mockery::mock(CommerceService::class);
|
||||
$mockCommerce->shouldReceive('fulfillOrder')->once();
|
||||
|
||||
$webhookLogger = new WebhookLogger;
|
||||
$controller = new BTCPayWebhookController($mockGateway, $mockCommerce, $webhookLogger);
|
||||
|
||||
$request = new \Illuminate\Http\Request;
|
||||
$response = $controller->handle($request);
|
||||
|
||||
expect($response->getStatusCode())->toBe(200);
|
||||
|
||||
$payment = Payment::where('order_id', $this->order->id)->first();
|
||||
expect($payment)->not->toBeNull()
|
||||
->and($payment->status)->toBe('succeeded')
|
||||
->and((float) $payment->amount)->toBe(58.80);
|
||||
});
|
||||
|
||||
it('rejects underpayment and marks order as failed', function () {
|
||||
$mockGateway = Mockery::mock(BTCPayGateway::class);
|
||||
$mockGateway->shouldReceive('verifyWebhookSignature')->andReturn(true);
|
||||
$mockGateway->shouldReceive('parseWebhookEvent')->andReturn([
|
||||
'type' => 'invoice.paid',
|
||||
'id' => 'btc_invoice_underpaid',
|
||||
'status' => 'succeeded',
|
||||
'metadata' => [],
|
||||
'raw' => ['invoiceId' => 'btc_invoice_amt_123'],
|
||||
]);
|
||||
$mockGateway->shouldReceive('getCheckoutSession')->andReturn([
|
||||
'id' => 'btc_invoice_amt_123',
|
||||
'status' => 'succeeded',
|
||||
'amount' => 30.00, // Underpaid: only 30 GBP instead of 58.80
|
||||
'currency' => 'GBP',
|
||||
'raw' => ['amount' => 30.00, 'currency' => 'GBP'],
|
||||
]);
|
||||
|
||||
$mockCommerce = Mockery::mock(CommerceService::class);
|
||||
// Should NOT fulfil order due to underpayment
|
||||
$mockCommerce->shouldNotReceive('fulfillOrder');
|
||||
|
||||
$webhookLogger = new WebhookLogger;
|
||||
$controller = new BTCPayWebhookController($mockGateway, $mockCommerce, $webhookLogger);
|
||||
|
||||
$request = new \Illuminate\Http\Request;
|
||||
$response = $controller->handle($request);
|
||||
|
||||
expect($response->getStatusCode())->toBe(200)
|
||||
->and($response->getContent())->toBe('Underpaid - order not fulfilled');
|
||||
|
||||
// Verify order was marked as failed
|
||||
$this->order->refresh();
|
||||
expect($this->order->status)->toBe('failed')
|
||||
->and($this->order->metadata['failure_reason'])->toContain('Underpaid');
|
||||
|
||||
// Verify partial payment was recorded for audit trail
|
||||
$payment = Payment::where('order_id', $this->order->id)->first();
|
||||
expect($payment)->not->toBeNull()
|
||||
->and($payment->status)->toBe('underpaid')
|
||||
->and((float) $payment->amount)->toBe(30.00);
|
||||
});
|
||||
|
||||
it('fulfils order but logs overpayment', function () {
|
||||
$mockGateway = Mockery::mock(BTCPayGateway::class);
|
||||
$mockGateway->shouldReceive('verifyWebhookSignature')->andReturn(true);
|
||||
$mockGateway->shouldReceive('parseWebhookEvent')->andReturn([
|
||||
'type' => 'invoice.paid',
|
||||
'id' => 'btc_invoice_overpaid',
|
||||
'status' => 'succeeded',
|
||||
'metadata' => [],
|
||||
'raw' => ['invoiceId' => 'btc_invoice_amt_123'],
|
||||
]);
|
||||
$mockGateway->shouldReceive('getCheckoutSession')->andReturn([
|
||||
'id' => 'btc_invoice_amt_123',
|
||||
'status' => 'succeeded',
|
||||
'amount' => 100.00, // Overpaid: 100 GBP instead of 58.80
|
||||
'currency' => 'GBP',
|
||||
'raw' => ['amount' => 100.00, 'currency' => 'GBP'],
|
||||
]);
|
||||
|
||||
$mockCommerce = Mockery::mock(CommerceService::class);
|
||||
// Should still fulfil order for overpayment
|
||||
$mockCommerce->shouldReceive('fulfillOrder')->once();
|
||||
|
||||
$webhookLogger = new WebhookLogger;
|
||||
$controller = new BTCPayWebhookController($mockGateway, $mockCommerce, $webhookLogger);
|
||||
|
||||
$request = new \Illuminate\Http\Request;
|
||||
$response = $controller->handle($request);
|
||||
|
||||
expect($response->getStatusCode())->toBe(200);
|
||||
|
||||
// Order should be fulfilled (overpayment is accepted)
|
||||
$payment = Payment::where('order_id', $this->order->id)->first();
|
||||
expect($payment)->not->toBeNull()
|
||||
->and($payment->status)->toBe('succeeded')
|
||||
->and((float) $payment->amount)->toBe(100.00);
|
||||
});
|
||||
|
||||
it('rejects payment with currency mismatch', function () {
|
||||
$mockGateway = Mockery::mock(BTCPayGateway::class);
|
||||
$mockGateway->shouldReceive('verifyWebhookSignature')->andReturn(true);
|
||||
$mockGateway->shouldReceive('parseWebhookEvent')->andReturn([
|
||||
'type' => 'invoice.paid',
|
||||
'id' => 'btc_invoice_currency_mismatch',
|
||||
'status' => 'succeeded',
|
||||
'metadata' => [],
|
||||
'raw' => ['invoiceId' => 'btc_invoice_amt_123'],
|
||||
]);
|
||||
$mockGateway->shouldReceive('getCheckoutSession')->andReturn([
|
||||
'id' => 'btc_invoice_amt_123',
|
||||
'status' => 'succeeded',
|
||||
'amount' => 58.80,
|
||||
'currency' => 'USD', // Wrong currency - order is in GBP
|
||||
'raw' => ['amount' => 58.80, 'currency' => 'USD'],
|
||||
]);
|
||||
|
||||
$mockCommerce = Mockery::mock(CommerceService::class);
|
||||
// Should NOT fulfil order due to currency mismatch
|
||||
$mockCommerce->shouldNotReceive('fulfillOrder');
|
||||
|
||||
$webhookLogger = new WebhookLogger;
|
||||
$controller = new BTCPayWebhookController($mockGateway, $mockCommerce, $webhookLogger);
|
||||
|
||||
$request = new \Illuminate\Http\Request;
|
||||
$response = $controller->handle($request);
|
||||
|
||||
expect($response->getStatusCode())->toBe(200)
|
||||
->and($response->getContent())->toBe('Currency mismatch - order not fulfilled');
|
||||
|
||||
// Verify order was marked as failed
|
||||
$this->order->refresh();
|
||||
expect($this->order->status)->toBe('failed')
|
||||
->and($this->order->metadata['failure_reason'])->toContain('Currency mismatch');
|
||||
});
|
||||
|
||||
it('allows small floating point tolerance in amount comparison', function () {
|
||||
$mockGateway = Mockery::mock(BTCPayGateway::class);
|
||||
$mockGateway->shouldReceive('verifyWebhookSignature')->andReturn(true);
|
||||
$mockGateway->shouldReceive('parseWebhookEvent')->andReturn([
|
||||
'type' => 'invoice.paid',
|
||||
'id' => 'btc_invoice_tolerance',
|
||||
'status' => 'succeeded',
|
||||
'metadata' => [],
|
||||
'raw' => ['invoiceId' => 'btc_invoice_amt_123'],
|
||||
]);
|
||||
$mockGateway->shouldReceive('getCheckoutSession')->andReturn([
|
||||
'id' => 'btc_invoice_amt_123',
|
||||
'status' => 'succeeded',
|
||||
'amount' => 58.79, // Slightly less due to floating point, within tolerance
|
||||
'currency' => 'GBP',
|
||||
'raw' => ['amount' => 58.79, 'currency' => 'GBP'],
|
||||
]);
|
||||
|
||||
$mockCommerce = Mockery::mock(CommerceService::class);
|
||||
// Should fulfil order as the difference is within tolerance (0.01)
|
||||
$mockCommerce->shouldReceive('fulfillOrder')->once();
|
||||
|
||||
$webhookLogger = new WebhookLogger;
|
||||
$controller = new BTCPayWebhookController($mockGateway, $mockCommerce, $webhookLogger);
|
||||
|
||||
$request = new \Illuminate\Http\Request;
|
||||
$response = $controller->handle($request);
|
||||
|
||||
expect($response->getStatusCode())->toBe(200);
|
||||
|
||||
$payment = Payment::where('order_id', $this->order->id)->first();
|
||||
expect($payment)->not->toBeNull()
|
||||
->and($payment->status)->toBe('succeeded');
|
||||
});
|
||||
});
|
||||
|
||||
afterEach(function () {
|
||||
Mockery::close();
|
||||
});
|
||||
|
|
|
|||
Loading…
Add table
Reference in a new issue