main.c

This a naive implementation of BOOTP/TFTPBOOT, the protocols to use to bootstrap a computer through

/*
	Copyright 2001, 2002 Georges Menie (www.menie.org)

	This file is part of Tftpnaive.

    Tftpnaive is free software; you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as published by
    the Free Software Foundation; either version 2 of the License, or
    (at your option) any later version.

    Tftpnaive is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    GNU Lesser General Public License for more details.

    You should have received a copy of the GNU Lesser General Public License
    along with Tftpnaive; if not, write to the Free Software
    Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
*/

#include "tftpnaive.h"
#include "baselib.h"
#include "timer.h"

#if TFTPNAIVE_TIMEREQUEST
static void getTime ()
{
	int ts, h, m, s;
	
	/* send a timestamp request to the TFTP server,
	 * to get it's GMT time of the day */
	if (tftp_req) {
		if ((ts = netTimestampRequest (tftp_req->server)) != 0) {
			ts = (ts + 500) / 1000;	/* round to secs */
			h = (ts / 3600) % 24;
			m = (ts / 60) % 60;
			s = ts % 60;
			setTime (h, m, s);
			printf ("GMT time is %d:%d:%d\n", h, m, s);
		}
	}
}
#endif

int main (void)
{
	int error;

	timerInit ();

	/* initialize the network chip, loop until it's ready */
	while ((error = netUp ()) != 0) {
		if (error != ERR_LINK)
			printf ("Network interface init failed: code %d\n", error);
		else
			printf ("No network, cable problem ?\n");
		usleep (1000000);
	}

	while (1) {
		/* request an IP address through BOOTP */
		netRequestIP ();

#if TFTPNAIVE_TIMEREQUEST
		getTime ();
#endif
		/* bootstrap using TFTP */
		if (netBoot () == 0)
			break;
	}

	/* shutdown the network chip */
	netDown ();

	/* if the download is successfull and
	 * a start address has been given, jump to it
	 */
	if (tftp_req && tftp_req->sts > 0 && tftp_req->strtf) {
		jump ((void *) tftp_req->strt);
		/* not reached */
	}

	return 0;
}