add normal user restrictions

session_manager.cpp

@@ -7,7 +7,17 @@ session_manager::session_manager(conexion* con)
 }
 
 bool session_manager::loggin(std::string username, std::string passwd){
-  return this->con->check_pass(username, passwd);
+  this->con->write_string(username);
+  this->con->write_string(passwd);
+  std::string result;
+  this->con->read_string(result,4);
+  return result=="pass";
+}
+
+bool session_manager::admin(){
+  std::string result;
+  this->con->read_string(result,5);
+  return result=="admin";
 }
 
 int session_manager::install_command(std::string package){