bootp.c

来自「2410 boot loader,usb ftp」· C语言 代码 · 共 92 行

/*
	Copyright 2001-2004 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 "net.h"
#include "baselib.h"

static BootData bdata;
BootData *tftp_req;

void processBOOTP (BOOTPpkt * bp)
{
	
	// Translate network data to host data
    bp->op_type = ntoh(bp->op_type);
    bp->adr_hop = ntoh(bp->adr_hop);
    bp->id = ntoh4(bp->id);
    bp->sec = ntoh4(bp->sec);
    bp->your_ip = ntoh4(bp->your_ip);
    bp->srv_ip = ntoh4(bp->srv_ip);
    	
	
	if (bp->op_type == BOOTP_ETH_REPLY && bp->id == BOOT_RQ_ID
		&& tftp_req == 0 && !memcmp (netif.IEEEIA, bp->hw_addr, 6)) {
		int l;

		Uart_Printf ("BOOTP: ");
		Uart_Printf ("IP %d.%d.%d.%d, ",
				(bp->your_ip >> 24) & 0xff,
				(bp->your_ip >> 16) & 0xff,
				(bp->your_ip >> 8) & 0xff,
				bp->your_ip & 0xff);
		Uart_Printf ("server %d.%d.%d.%d, ",
				(bp->srv_ip >> 24) & 0xff,
				(bp->srv_ip >> 16) & 0xff,
				(bp->srv_ip >> 8) & 0xff,
				bp->srv_ip & 0xff);
		Uart_Printf ("boot file '%s'\n", bp->boot_filename);
		netif.ip = bp->your_ip;
		l = strlen ((char *)bp->boot_filename);
		if (l > 0 && l < 128) {
			memset (&bdata, 0, sizeof bdata);
			tftp_req = &bdata;
			tftp_req->server = bp->srv_ip;
			strcpy (tftp_req->file, (char *)bp->boot_filename);
		}
	}
}

int sendBOOTPRequest (void)
{
	BOOTPpkt bootp_pkt;

	tftp_req = 0;
	memset (&bootp_pkt, 0, sizeof(bootp_pkt));
	bootp_pkt.op_type = hton(BOOTP_ETH_REQUEST);
	bootp_pkt.adr_hop = hton(0x600);
	bootp_pkt.id = hton4(BOOT_RQ_ID);
	bootp_pkt.sec = hton4(BOOT_RQ_SEC);
	memcpy (&bootp_pkt.hw_addr, netif.IEEEIA, 6);

	return sendUDP ((UDPpkt *) & bootp_pkt,
					sizeof(bootp_pkt) - sizeof (UDPpkt), -1, BOOTP_CLI_PORT,
					BOOTP_SRV_PORT);
}

void directBOOTP(unsigned int myip, unsigned int srvip, char *file)
{
	netif.ip = myip;
	memset (&bdata, 0, sizeof bdata);
	tftp_req = &bdata;
	tftp_req->server = srvip;
	strcpy (tftp_req->file, file);	
}