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	1
	2	#ifndef _NETINET_DHCP_H
	3	#define _NETINET_DHCP_H
	4	#include <sys/appleapiopts.h>
	5
	6	/*
	7	* Copyright (c) 1999-2007 Apple Inc. All rights reserved.
	8	*
	9	* @APPLE_OSREFERENCE_LICENSE_HEADER_START@
	10	*
	11	* This file contains Original Code and/or Modifications of Original Code
	12	* as defined in and that are subject to the Apple Public Source License
	13	* Version 2.0 (the 'License'). You may not use this file except in
	14	* compliance with the License. The rights granted to you under the License
	15	* may not be used to create, or enable the creation or redistribution of,
	16	* unlawful or unlicensed copies of an Apple operating system, or to
	17	* circumvent, violate, or enable the circumvention or violation of, any
	18	* terms of an Apple operating system software license agreement.
	19	*
	20	* Please obtain a copy of the License at
	21	* http://www.opensource.apple.com/apsl/ and read it before using this file.
	22	*
	23	* The Original Code and all software distributed under the License are
	24	* distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
	25	* EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
	26	* INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
	27	* FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
	28	* Please see the License for the specific language governing rights and
	29	* limitations under the License.
	30	*
	31	* @APPLE_OSREFERENCE_LICENSE_HEADER_END@
	32	*/
	33	/*
	34	* dhcp.h
	35	* - definitions for DHCP (as specified in RFC2132)
	36	*/
	37	#include <sys/types.h>
	38	#include <netinet/in.h>
	39	#include <netinet/in_systm.h>
	40	#include <netinet/ip.h>
	41	#include <netinet/udp.h>
	42
	43	struct dhcp {
	44	u_char dp_op; /* packet opcode type */
	45	u_char dp_htype; /* hardware addr type */
	46	u_char dp_hlen; /* hardware addr length */
	47	u_char dp_hops; /* gateway hops */
	48	u_int32_t dp_xid; /* transaction ID */
	49	u_int16_t dp_secs; /* seconds since boot began */
	50	u_int16_t dp_flags; /* flags */
	51	struct in_addr dp_ciaddr; /* client IP address */
	52	struct in_addr dp_yiaddr; /* 'your' IP address */
	53	struct in_addr dp_siaddr; /* server IP address */
	54	struct in_addr dp_giaddr; /* gateway IP address */
	55	u_char dp_chaddr[16]; /* client hardware address */
	56	u_char dp_sname[64]; /* server host name */
	57	u_char dp_file[128]; /* boot file name */
	58	u_char dp_options[0]; /* variable-length options field */
	59	};
	60
	61	struct dhcp_packet {
	62	struct ip ip;
	63	struct udphdr udp;
	64	struct dhcp dhcp;
	65	};
	66
	67	#define DHCP_OPTIONS_MIN 312
	68	#define DHCP_PACKET_MIN (sizeof(struct dhcp_packet) + DHCP_OPTIONS_MIN)
	69	#define DHCP_PAYLOAD_MIN (sizeof(struct dhcp) + DHCP_OPTIONS_MIN)
	70
	71	/* dhcp message types */
	72	#define DHCPDISCOVER 1
	73	#define DHCPOFFER 2
	74	#define DHCPREQUEST 3
	75	#define DHCPDECLINE 4
	76	#define DHCPACK 5
	77	#define DHCPNAK 6
	78	#define DHCPRELEASE 7
	79	#define DHCPINFORM 8
	80
	81	enum {
	82	dhcp_msgtype_none_e = 0,
	83	dhcp_msgtype_discover_e = DHCPDISCOVER,
	84	dhcp_msgtype_offer_e = DHCPOFFER,
	85	dhcp_msgtype_request_e = DHCPREQUEST,
	86	dhcp_msgtype_decline_e = DHCPDECLINE,
	87	dhcp_msgtype_ack_e = DHCPACK,
	88	dhcp_msgtype_nak_e = DHCPNAK,
	89	dhcp_msgtype_release_e = DHCPRELEASE,
	90	dhcp_msgtype_inform_e = DHCPINFORM,
	91	};
	92
	93	typedef uint8_t dhcp_msgtype_t;
	94
	95	typedef int32_t dhcp_time_secs_t; /* absolute time */
	96	typedef int32_t dhcp_lease_t; /* relative time */
	97	#define dhcp_time_hton htonl
	98	#define dhcp_time_ntoh ntohl
	99	#define dhcp_lease_hton htonl
	100	#define dhcp_lease_ntoh ntohl
	101
	102	#define DHCP_INFINITE_LEASE ((dhcp_lease_t)-1)
	103	#define DHCP_INFINITE_TIME ((dhcp_time_secs_t)-1)
	104
	105	#define DHCP_FLAGS_BROADCAST ((u_short)0x0001)
	106
	107	#endif /* _NETINET_DHCP_H */