diff --git a/app/Services/Payments/PaddleWebhookVerifier.php b/app/Services/Payments/PaddleWebhookVerifier.php index ee069c7..bce9424 100644 --- a/app/Services/Payments/PaddleWebhookVerifier.php +++ b/app/Services/Payments/PaddleWebhookVerifier.php @@ -1,9 +1,7 @@ header('Paddle-Signature'); - - if ($secret === '' || $header === '') { - throw new RuntimeException('Paddle webhook verification is not configured.'); - } - + if ($secret === '' || $header === '') throw new RuntimeException('Paddle webhook verification is not configured.'); $parts = []; - - foreach (explode(';', $header) as $part) { - [$key, $value] = array_pad( - explode('=', trim($part), 2), - 2, - null - ); - - if ($key && $value) { - $parts[$key][] = $value; - } - } - - $timestamp = isset($parts['ts'][0]) - ? (int) $parts['ts'][0] - : 0; - + foreach (explode(';', $header) as $part) { [$k,$v] = array_pad(explode('=',trim($part),2),2,null); if ($k && $v) $parts[$k][]=$v; } + $ts = isset($parts['ts'][0]) ? (int)$parts['ts'][0] : 0; $signatures = $parts['h1'] ?? []; - - $tolerance = max( - 1, - (int) config('rsync-studio.paddle.timestamp_tolerance', 300) - ); - - if (!$timestamp || abs(time() - $timestamp) > $tolerance) { - throw new RuntimeException( - 'Paddle webhook timestamp is outside the allowed tolerance.' - ); - } - - $signedPayload = $timestamp . ':' . $rawBody; - - $expected = hash_hmac( - 'sha256', - $signedPayload, - $secret - ); - - Log::info('Paddle webhook signature debug', [ - 'header' => $header, - 'timestamp' => $timestamp, - 'server_timestamp' => time(), - 'body_length' => strlen($rawBody), - 'body_sha256' => hash('sha256', $rawBody), - 'expected_h1' => $expected, - 'received_h1' => $signatures, - ]); - - foreach ($signatures as $signature) { - if (hash_equals($expected, $signature)) { - return; - } - } - + $tolerance = max(1,(int)config('rsync-studio.paddle.timestamp_tolerance',300)); + if (!$ts || abs(time()-$ts)>$tolerance) throw new RuntimeException('Paddle webhook timestamp is outside the allowed tolerance.'); + $expected = hash_hmac('sha256', $ts.':'.$rawBody, $secret); + foreach ($signatures as $signature) if (hash_equals($expected,$signature)) return; throw new RuntimeException('Paddle webhook signature is invalid.'); } }