Added XF CSRF compatibility

app/Services/XenforoService.php

@@ -5,6 +5,8 @@ namespace App\Services;
 use App\Auth\XenForoUser;
 use App\XenForoDataTypes\XenForoUserGroup;
 use Illuminate\Support\Facades\Cache;
+use Illuminate\Support\Facades\Cookie;
+use Illuminate\Support\Str;
 
 class XenforoService {
 
@@ -192,4 +194,19 @@ class XenforoService {
         return $built;
 
     }
+
+    private function hashCSRFToken( string $token ): string
+    {
+        return hash_hmac('md5', $token . time(), config('app.xf_salt') );
+    }
+    public function getCSRFToken(): string
+    {
+        $token = Cookie::get('xf_csrf');
+        if( !$token ){
+            $token = Str::random(16);
+            Cookie::queue('xf_csrf', $token, 0, '/', config('session.domain'), 0, false, false );
+        }
+
+        return time() . ',' . $this->hashCSRFToken($token);
+    }
 }