#include?
#include?
#include?
#include?
#include?
#include?

#define?PORT_BOOTPS						67		//?BOOTP?server?UDP?port.
#define?PORT_BOOTPC						68		//?BOOTP?client?UDP?port.

static?void?bootp_usage（void）;
static?bool?do_bootp（int?argc?char?**argv）;
static?int?set_bootp_header（void?*packet）;

static?bool?wait?=?false;
static?uint32?bootp_id;

struct?command_t?cmd_bootp?=?{
	.name??=?“bootp“
	.run???=?do_bootp
	.usage?=?bootp_usage
};

static?void?bootp_usage（void）{
	usage_format（“bootp“?“run?bootp.?get?ip?and?host?infomation“）;
	return;
}

static?bool?do_bootp（int?argc?char?**argv）{
	int?i?n?len;
	bool?res;
	uchar?pktbuff[1024]?*txpkt;
	time_t?start?now;
	const?uchar?broadcast_mac[]?=?{?0xFF?0xFF?0xFF?0xFF?0xFF?0xFF?};
	const?uint32?broadcast_ip?=?0xFFFFFFFF;

	/*?create?boop?packet?*/
	memset（pktbuff?0?sizeof（pktbuff））;
	txpkt?=?pktbuff?+?100;
	len?=?set_bootp_header（txpkt）;
	n?=?set_udp_header（txpkt?PORT_BOOTPS?PORT_BOOTPC?len）;
	txpkt?-=?n;?len?+=?n;
	n?=?set_ip_header（txpkt?0x00?broadcast_ip?IP_P_UDP?len）;
	txpkt?-=?n;?len?+=?n;
	n?=?set_ether_header（txpkt?broadcast_mac?PROT_IP）;
	txpkt?-=?n;?len?+=?n;

	/*?view?information?*/
	printf（“?my?mac?address?is?%s\n“?mac_ntoa（setup->myhaddr））;
	printf（“?try?to?send?bootp?packet“）;

	/*?send?request?packet?and?wait?reply?packet?*/
	wait?=?true;
	setup->myipaddr?=?0;
	for?（i=0;?i?		res?=?net_send_packet（txpkt?len）;
		if?（!res）?break;
		printf（“.“）;

		time（&start）;
		while?（time（&now）?-?start?			net_recv_poll（）;
			if?（!wait）?return?true;
		}
	}
	printf（“\n?failed?:?bootp?packet?is?not?received.\n“）;
	wait?=?false;
	return?false;
}

extern?bool?bootp_recv（void?*packet?int?len）{
	struct?bootp?*bhp?=?（struct?bootp?*）packet;

	if?（len?	if?（!wait）?goto?invalid;

	if?（bhp->bh_opcode?!=?OP_BOOTREPLY）?goto?invalid;
	if?（bhp->bh_htype?!=?HWT_ETHER）?goto?invalid;
	if?（bhp->bh_hlen?!=?HWL_ETHER）?goto?invalid;
	if?（memcmp（&bhp->bh_tid?&bootp_id?4））?goto?invalid;
	//if?（memcmp（&bhp->bh_chaddr?net_get_mac_addr（0）?6））?goto?invalid;
	if?（memcmp（&bhp->bh_chaddr?setup->myhaddr?6））?goto?invalid;

	printf（“\n“）;
	printf（“?reply?packet?is?received?from?%s?（%s）\n“?bhp->bh_sname?inet_ntoa（bhp->bh_siaddr））;
	printf（“?my?ip?address?is?%s\n“?inet_ntoa（bhp->bh_yiaddr））;


????//????printf（“the?ip?is?0x%08x?serip?is?0x%08x\n“?bhp->bh_yiaddr?bhp->bh_siaddr）;


	setup->myipaddr?=?bhp->bh_yiaddr;
	setup->destipaddr?=?bhp->bh_siaddr;
	wait?=?false;
	return?true;

invalid?:
	return?false;
}

static?int?set_bootp_header（void?*packet）{
	uchar?*smac;
	time_t?now;
	struct?bootp?*bhp?=?（struct?bootp?*）packet;

	bhp->bh_opcode?=?OP_BOOTREQUEST;			//?1?:?request		2?:?reply.
	bhp->bh_htype??=?HWT_ETHER;					//?10?base?Ethernet?:?1.
	bhp->bh_hlen???=?HWL_ETHER;					//?10?base?Ethernet?:?6.
	bhp->bh_hops???=?0;							//?client俊輯?0欄肺?setting.?gateway啊?葷儈.
	bhp->bh_secs???=?htons（time（&now））;