phase 2

app/Http/Middleware/AuthenticateDsn.php

@@ -0,0 +1,48 @@
+<?php
+
+namespace App\Http\Middleware;
+
+use App\Models\Project;
+use Closure;
+use Illuminate\Http\Request;
+use Symfony\Component\HttpFoundation\Response;
+
+class AuthenticateDsn
+{
+    public function handle(Request $request, Closure $next): Response
+    {
+        $project = $request->route('project');
+
+        if (! $project instanceof Project) {
+            abort(404, 'Project not found.');
+        }
+
+        $sentryKey = $this->extractSentryKey($request);
+
+        if (! $sentryKey || $sentryKey !== $project->dsn_public_key) {
+            abort(401, 'Invalid DSN key.');
+        }
+
+        return $next($request);
+    }
+
+    /**
+     * Extract the sentry_key from the query string or X-Sentry-Auth header.
+     *
+     * Header format: Sentry sentry_version=7, sentry_client=..., sentry_key=<key>
+     */
+    private function extractSentryKey(Request $request): ?string
+    {
+        if ($key = $request->query('sentry_key')) {
+            return $key;
+        }
+
+        $header = $request->header('X-Sentry-Auth', '');
+
+        if (preg_match('/sentry_key=([a-f0-9\-]+)/i', $header, $matches)) {
+            return $matches[1];
+        }
+
+        return null;
+    }
+}