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 | |
42 | struct 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 | |
60 | struct 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 | |
80 | enum { |
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 | |
92 | typedef uint8_t dhcp_msgtype_t; |
93 | |
94 | typedef int32_t dhcp_time_secs_t; /* absolute time */ |
95 | typedef 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 | |