#include <stdio.h>
#include <termios.h>
#include <sys/time.h>
#include <sys/types.h>
#include <unistd.h>
#include <unistd.h>
#include <stdlib.h>

     struct termios saved_attributes;
     
     void
     reset_input_mode (void)
     {
       tcsetattr (STDIN_FILENO, TCSANOW, &saved_attributes);
     }
     
     void
     set_input_mode (void)
     {
       struct termios tattr;
       char *name;
     
       /* Make sure stdin is a terminal. */
       if (!isatty (STDIN_FILENO))
         {
           fprintf (stderr, "Not a terminal.\n");
           exit (EXIT_FAILURE);
         }
     
       /* Save the terminal attributes so we can restore them later. */
       tcgetattr (STDIN_FILENO, &saved_attributes);
       atexit (reset_input_mode);
     
       /* Set the funny terminal modes. */
       tcgetattr (STDIN_FILENO, &tattr);
       tattr.c_lflag &= ~(ICANON|ECHO); /* Clear ICANON and ECHO. */
       tattr.c_cc[VMIN] = 1;
       tattr.c_cc[VTIME] = 0;
       tcsetattr (STDIN_FILENO, TCSAFLUSH, &tattr);
     }

     void menu()
{
       printf("-----------------------------------\n");
       printf("(1) poweroff; (2) advmenu > \n"); fflush(stdout);
}

       int main(void) {
    	   fd_set rfds;
   	   struct timeval tv;
   	   int retval;
	   char c;
           short huhcount = 0;
	   set_input_mode();

   	   /* Watch stdin (fd 0) to see when it has input. */

       while (1)
         {
           menu();
   	   FD_ZERO(&rfds);
   	   FD_SET(0, &rfds);
	   	   /* Wait up to five seconds. */
   	   tv.tv_sec = 20;
   	   tv.tv_usec = 0;
   	   retval = select(1, &rfds, NULL, NULL, &tv);

	   if (retval)
           {
             read (STDIN_FILENO, &c, 1);
             if (c == '1') 
		     {
                     printf("Are you sure? (1) \n"); fflush(stdout);
   	             FD_ZERO(&rfds);
   	             FD_SET(0, &rfds);
	   	   /* Wait up to five seconds. */
   	             tv.tv_sec = 20;
   	             tv.tv_usec = 0;
   	             retval = select(1, &rfds, NULL, NULL, &tv);
		     if (retval) 
                        {
                        read (STDIN_FILENO, &c, 1);
		        if (c == '1') exit(1); else exit(2);
			}
		     else /* return to menu if they are totally clueless */
			{
		        printf("timeout....\n"); fflush(stdout);
		        exit(2);
		        }
	             }
	     else if (c == '2')
	     {
		      exit(2);
	     }
	     else
	     {
	        printf("huh? "); fflush(stdout); 
	        huhcount++;
	        if (huhcount > 5) exit(2);
	     }
	   }
	   else  /* timeout */
	   {
		   printf("timeout....\n"); fflush(stdout);
		   exit(2);
	   }
         } /* while */
     
       return EXIT_SUCCESS;
     
     }