text: #ifndef MASTER_LOGIN_AUTH_H
  #define MASTER_LOGIN_AUTH_H
  
  struct master_auth_request;
  
  typedef void
  master_login_auth_request_callback_t(const char *const *auth_args,
  				     const char *errormsg, void *context);
  
  struct master_login_auth *
  master_login_auth_init(const char *auth_socket_path, bool request_auth_token);
  void master_login_auth_deinit(struct master_login_auth **auth);
  void master_login_auth_disconnect(struct master_login_auth *auth);
  
  /* req has been sent by login process. this function finishes authentication
     by performing verifying from auth that req is valid and doing the userdb
     lookup. */
  void master_login_auth_request(struct master_login_auth *auth,
  			       const struct master_auth_request *req,
  			       master_login_auth_request_callback_t *callback,
  			       void *context);
  unsigned int master_login_auth_request_count(struct master_login_auth *auth);
  
  #endif
  