Add API for caddy domain check

app/Server/Factory.php

@@ -38,6 +38,7 @@
 use App\Server\Http\Controllers\Admin\StoreUsersController;
 use App\Server\Http\Controllers\ControlMessageController;
 use App\Server\Http\Controllers\TunnelMessageController;
+use App\Server\Http\Controllers\ValidateTunnelController;
 use App\Server\Http\Router;
 use App\Server\LoggerRepository\NullLogger;
 use App\Server\StatisticsCollector\DatabaseStatisticsCollector;
@@ -166,6 +167,15 @@ protected function addAdminRoutes()
 
         $this->router->get('/api/tcp', GetTcpConnectionsController::class, $adminCondition);
         $this->router->delete('/api/tcp/{id}', DisconnectTcpConnectionController::class, $adminCondition);
+
+        return $this;
+    }
+
+    protected function addValidateTunnel()
+    {
+        $this->router->get('/validate-tunnel', ValidateTunnelController::class);
+
+        return $this;
     }
 
     protected function bindConfiguration()
@@ -209,7 +219,8 @@ public function createServer()
             ->ensureDatabaseIsInitialized()
             ->registerStatisticsCollector()
             ->bindConnectionManager()
-            ->addAdminRoutes();
+            ->addAdminRoutes()
+            ->addValidateTunnel();
 
         $controlConnection = $this->addControlConnectionRoute();
 

app/Server/Http/Controllers/ValidateTunnelController.php

@@ -0,0 +1,63 @@
+<?php
+
+namespace App\Server\Http\Controllers;
+
+use App\Contracts\ConnectionManager;
+use App\Http\Controllers\Controller;
+use App\Server\Connections\ControlConnection;
+use Illuminate\Http\Request;
+use Illuminate\Support\Collection;
+use Ratchet\ConnectionInterface;
+
+class ValidateTunnelController extends Controller
+{
+    private ConnectionManager $connectionManager;
+
+
+    public function __construct(ConnectionManager $connectionManager)
+    {
+        $this->connectionManager = $connectionManager;
+    }
+
+    public function handle(Request $request, ConnectionInterface $httpConnection)
+    {
+        $domain = $request->get('domain');
+        if ($domain === null) {
+            $httpConnection->send(
+                respond_json(['exists' => false, 'error' => 'invalid_domain'], 404),
+            );
+
+            return;
+        }
+
+        /** @var Collection $sites */
+        $sites = collect($this->connectionManager->getConnections())
+            ->filter(function ($site) use ($domain) {
+                $isControlConnection = get_class($site) === ControlConnection::class;
+                if (! $isControlConnection) {
+                    return false;
+                }
+
+
+                $fqdn = sprintf(
+                    '%s.%s',
+                    $site->subdomain,
+                    $site->serverHost,
+                );
+                return $fqdn === $domain;
+            })
+            ->map(function (ControlConnection $site) {
+                return sprintf(
+                    '%s.%s',
+                    $site->host,
+                    $site->subdomain,
+                );
+            });
+
+        $response = $sites->count() === 0
+            ? respond_json(['exists' => false, 'error' => 'no_tunnel_found'], 404)
+            : respond_json(['exists' => true, 'sites' => $sites->toArray()]);
+
+        $httpConnection->send($response);
+    }
+}