Radicade/Server/Studio/StudioAssetsCDN.cs

using Microsoft.AspNetCore.Mvc;

namespace RadicadeServer.CDN;

[Route("studiocdn")]
public class StudioAssetsCDN : Controller
{
    [HttpGet("unityasset/{filename}"), HttpHead("unityasset/{filename}")]
    [HttpGet("roomunityasset/{filename}"), HttpHead("roomunityasset/{filename}")]
    public IActionResult Download(string filename)
    {
        if (string.IsNullOrEmpty(filename) || filename.Length > 80 ||
            filename.Any(c => !char.IsAsciiLetterOrDigit(c) && c != '-')) return BadRequest();
        var path = Path.GetFullPath(Path.Combine(DBConfig.CDNStorage, filename));
        if (!System.IO.File.Exists(path)) return NotFound();
        return PhysicalFile(path, "application/octet-stream", enableRangeProcessing: true);
    }
}