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vendor/stripe/stripe-php/lib/Webhook.php

@@ -0,0 +1,42 @@
+<?php
+
+namespace Stripe;
+
+abstract class Webhook
+{
+    const DEFAULT_TOLERANCE = 300;
+
+    /**
+     * Returns an Event instance using the provided JSON payload. Throws an
+     * Exception\UnexpectedValueException if the payload is not valid JSON, and
+     * an Exception\SignatureVerificationException if the signature
+     * verification fails for any reason.
+     *
+     * @param string $payload the payload sent by Stripe
+     * @param string $sigHeader the contents of the signature header sent by
+     *  Stripe
+     * @param string $secret secret used to generate the signature
+     * @param int $tolerance maximum difference allowed between the header's
+     *  timestamp and the current time
+     *
+     * @throws Exception\UnexpectedValueException if the payload is not valid JSON,
+     * @throws Exception\SignatureVerificationException if the verification fails
+     *
+     * @return Event the Event instance
+     */
+    public static function constructEvent($payload, $sigHeader, $secret, $tolerance = self::DEFAULT_TOLERANCE)
+    {
+        WebhookSignature::verifyHeader($payload, $sigHeader, $secret, $tolerance);
+
+        $data = \json_decode($payload, true);
+        $jsonError = \json_last_error();
+        if (null === $data && \JSON_ERROR_NONE !== $jsonError) {
+            $msg = "Invalid payload: {$payload} "
+              . "(json_last_error() was {$jsonError})";
+
+            throw new Exception\UnexpectedValueException($msg);
+        }
+
+        return Event::constructFrom($data);
+    }
+}