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 */ |
108 | |