40 lines
1.2 KiB
PHP
40 lines
1.2 KiB
PHP
<?php
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namespace Modules\InternalApi\app\Http\Middleware;
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use Closure;
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use Illuminate\Http\Request;
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use Symfony\Component\HttpFoundation\Response;
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class VerifyInternalApiSignature
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{
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/**
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* Verify the HMAC signature used between separated WMS applications.
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*/
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public function handle(Request $request, Closure $next): Response
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{
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$secret = (string) config('platform.internal_api_key');
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$timestamp = (string) $request->header('X-WMS-Timestamp');
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$signature = (string) $request->header('X-WMS-Signature');
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abort_if($secret === '' || $timestamp === '' || $signature === '', 401);
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abort_if(strtotime($timestamp) === false, 401, 'Invalid internal API timestamp.');
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abort_if(abs(now()->timestamp - strtotime($timestamp)) > 300, 401, 'Expired internal API signature.');
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$body = $request->getContent();
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$payloads = array_unique([
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$timestamp.'.'.$body,
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$timestamp.'.',
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$timestamp.'.[]',
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]);
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foreach ($payloads as $payload) {
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if (hash_equals(hash_hmac('sha256', $payload, $secret), $signature)) {
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return $next($request);
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}
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}
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abort(401, 'Invalid internal API signature.');
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}
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}
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