#ifndef _USER_H
 #define _USER_H
 #include <vector>
 #include <string>

 #include <memory>

 #include <pwd.h>
 

 class user
 {
 public:
     virtual ~user() {}

     //        virtual std::string home_directory() = 0;

 };
 

 typedef std::shared_ptr<user> user_p;

 class directory
 {
 public:
     virtual ~directory() {}

     virtual const user_p find_user (const std::string &user_name) = 0;

 };

 typedef std::shared_ptr<directory> directory_p;

 #endif