add permission on all files with lift like for an admin part

gistfile1.scala

package code.lib


import net.liftweb.common._
import net.liftweb.http._
import S._
import net.liftweb.util._
import Helpers._
import code.model.User


object ProxyGuard extends Logger {
  def register = {

    LiftRules.liftRequest.append {
      case Req("private" :: _, _, _) => true
    }

    LiftRules.dispatch.prepend(NamedPF("File Dispatch") {

      case r@Req("private" :: _, _, _) if canRender(r) && User.loggedIn_? => {
        val res = tryo {
          val pls = r.path.partPath.mkString("/", "/", "." + r.path.suffix)
         
          LiftRules.loadResource(pls) match {
            case Full(b) => FileResponse(b, Nil, 200, getMimeType(r.path.suffix))
            case _ => NotFoundResponse()
          }
        }
        () => res
      }
    })

    def getMimeType(suffix: String): String = {
      suffix match {
        case "css" => "text/css"
        case "js" => "application/x-javascript"
        case _ => "application/octet-stream"
      }
    }

    def canRender(r: Req): Boolean = {
      r.path.suffix match {
        case "css" => true
        case "js" => true
        case _ => false
      }
    }

  }

  case class FileResponse(b: Array[Byte], headers: List[(String, String)] = Nil, code: Int = 200, contentType: String = "text/html;") extends LiftResponse {
    def toResponse = {
      InMemoryResponse(b, ("Content-Length", b.length.toString) ::("Content-Type", contentType) :: headers, Nil, code)
    }
  }

}