Beispiel #1
0
static void gateway_handle(struct dhcp_opt *opt, unsigned char *popt, int optlen)
{
	IPaddr_t ip;

	ip = net_read_ip(popt);
	net_set_gateway(ip);
}
Beispiel #2
0
static void dhcp_options_process(unsigned char *popt, struct bootp *bp)
{
	unsigned char *end = popt + sizeof(*bp) + OPT_SIZE;
	int oplen;
	IPaddr_t ip;
	char str[256];

	while (popt < end && *popt != 0xff) {
		oplen = *(popt + 1);
		switch (*popt) {
		case 1:
			ip = net_read_ip(popt + 2);
			net_set_netmask(ip);
			break;
		case 3:
			ip = net_read_ip(popt + 2);
			net_set_gateway(ip);
			break;
		case 6:
			ip = net_read_ip(popt + 2);
			setenv_ip("nameserver", ip);
			break;
		case 12:
			memcpy(str, popt + 2, oplen);
			str[oplen] = 0;
			setenv("hostname", str);
			break;
		case 15:
			memcpy(str, popt + 2, oplen);
			str[oplen] = 0;
			setenv("domainname", str);
			break;
		case 17:
			memcpy(str, popt + 2, oplen);
			str[oplen] = 0;
			setenv("rootpath", str);
			break;
		case 51:
			net_copy_uint32 (&dhcp_leasetime, (uint32_t *)(popt + 2));
			break;
		case 53:	/* Ignore Message Type Option */
			break;
		case 54:
			net_copy_ip(&net_dhcp_server_ip, (popt + 2));
			break;
		case 58:	/* Ignore Renewal Time Option */
			break;
		case 59:	/* Ignore Rebinding Time Option */
			break;
		case 66:	/* Ignore TFTP server name */
			break;
		case 67:	/* vendor opt bootfile */
			/*
			 * I can't use dhcp_vendorex_proc here because I need
			 * to write into the bootp packet - even then I had to
			 * pass the bootp packet pointer into here as the
			 * second arg
			 */
			memcpy(str, popt + 2, oplen);
			str[oplen] = 0;
			if (bp->bp_file[0] == '\0') {
				/*
				 * only use vendor boot file if we didn't
				 * receive a boot file in the main non-vendor
				 * part of the packet - god only knows why
				 * some vendors chose not to use this perfectly
				 * good spot to store the boot file (join on
				 * Tru64 Unix) it seems mind bogglingly crazy
				 * to me
				 */
				printf("*** WARNING: using vendor "
					"optional boot file\n");
					setenv("bootfile", str);
			}
			break;
		default:
#ifdef CONFIG_BOOTP_VENDOREX
			if (dhcp_vendorex_proc (popt))
				break;
#endif
			debug("*** Unhandled DHCP Option in OFFER/ACK: %d\n", *popt);
			break;
		}
		popt += oplen + 2;	/* Process next option */
	}
}