1#ifndef _NETINET_DHCP_H
2#define _NETINET_DHCP_H
3#include <sys/appleapiopts.h>
4
5/*
6 * Copyright (c) 1999-2007 Apple Inc. All rights reserved.
7 *
8 * @APPLE_OSREFERENCE_LICENSE_HEADER_START@
9 *
10 * This file contains Original Code and/or Modifications of Original Code
11 * as defined in and that are subject to the Apple Public Source License
12 * Version 2.0 (the 'License'). You may not use this file except in
13 * compliance with the License. The rights granted to you under the License
14 * may not be used to create, or enable the creation or redistribution of,
15 * unlawful or unlicensed copies of an Apple operating system, or to
16 * circumvent, violate, or enable the circumvention or violation of, any
17 * terms of an Apple operating system software license agreement.
18 *
19 * Please obtain a copy of the License at
20 * http://www.opensource.apple.com/apsl/ and read it before using this file.
21 *
22 * The Original Code and all software distributed under the License are
23 * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
24 * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
25 * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
26 * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
27 * Please see the License for the specific language governing rights and
28 * limitations under the License.
29 *
30 * @APPLE_OSREFERENCE_LICENSE_HEADER_END@
31 */
32/*
33 * dhcp.h
34 * - definitions for DHCP (as specified in RFC2132)
35 */
36#include <sys/types.h>
37#include <netinet/in.h>
38#include <netinet/in_systm.h>
39#include <netinet/ip.h>
40#include <netinet/udp.h>
41
42struct dhcp {
43 u_char dp_op; /* packet opcode type */
44 u_char dp_htype; /* hardware addr type */
45 u_char dp_hlen; /* hardware addr length */
46 u_char dp_hops; /* gateway hops */
47 u_int32_t dp_xid; /* transaction ID */
48 u_int16_t dp_secs; /* seconds since boot began */
49 u_int16_t dp_flags; /* flags */
50 struct in_addr dp_ciaddr; /* client IP address */
51 struct in_addr dp_yiaddr; /* 'your' IP address */
52 struct in_addr dp_siaddr; /* server IP address */
53 struct in_addr dp_giaddr; /* gateway IP address */
54 u_char dp_chaddr[16];/* client hardware address */
55 u_char dp_sname[64];/* server host name */
56 u_char dp_file[128];/* boot file name */
57 u_char dp_options[0];/* variable-length options field */
58};
59
60struct dhcp_packet {
61 struct ip ip;
62 struct udphdr udp;
63 struct dhcp dhcp;
64};
65
66#define DHCP_OPTIONS_MIN 312
67#define DHCP_PACKET_MIN (sizeof(struct dhcp_packet) + DHCP_OPTIONS_MIN)
68#define DHCP_PAYLOAD_MIN (sizeof(struct dhcp) + DHCP_OPTIONS_MIN)
69
70/* dhcp message types */
71#define DHCPDISCOVER 1
72#define DHCPOFFER 2
73#define DHCPREQUEST 3
74#define DHCPDECLINE 4
75#define DHCPACK 5
76#define DHCPNAK 6
77#define DHCPRELEASE 7
78#define DHCPINFORM 8
79
80enum {
81 dhcp_msgtype_none_e = 0,
82 dhcp_msgtype_discover_e = DHCPDISCOVER,
83 dhcp_msgtype_offer_e = DHCPOFFER,
84 dhcp_msgtype_request_e = DHCPREQUEST,
85 dhcp_msgtype_decline_e = DHCPDECLINE,
86 dhcp_msgtype_ack_e = DHCPACK,
87 dhcp_msgtype_nak_e = DHCPNAK,
88 dhcp_msgtype_release_e = DHCPRELEASE,
89 dhcp_msgtype_inform_e = DHCPINFORM,
90};
91
92typedef uint8_t dhcp_msgtype_t;
93
94typedef int32_t dhcp_time_secs_t; /* absolute time */
95typedef int32_t dhcp_lease_t; /* relative time */
96#define dhcp_time_hton htonl
97#define dhcp_time_ntoh ntohl
98#define dhcp_lease_hton htonl
99#define dhcp_lease_ntoh ntohl
100
101#define DHCP_INFINITE_LEASE ((dhcp_lease_t)-1)
102#define DHCP_INFINITE_TIME ((dhcp_time_secs_t)-1)
103
104#define DHCP_FLAGS_BROADCAST ((u_int16_t)0x8000)
105
106#endif /* _NETINET_DHCP_H */
107