1/*
2 * Copyright (c) 2000 Apple Computer, Inc. All rights reserved.
3 *
4 * @APPLE_OSREFERENCE_LICENSE_HEADER_START@
5 *
6 * This file contains Original Code and/or Modifications of Original Code
7 * as defined in and that are subject to the Apple Public Source License
8 * Version 2.0 (the 'License'). You may not use this file except in
9 * compliance with the License. The rights granted to you under the License
10 * may not be used to create, or enable the creation or redistribution of,
11 * unlawful or unlicensed copies of an Apple operating system, or to
12 * circumvent, violate, or enable the circumvention or violation of, any
13 * terms of an Apple operating system software license agreement.
14 *
15 * Please obtain a copy of the License at
16 * http://www.opensource.apple.com/apsl/ and read it before using this file.
17 *
18 * The Original Code and all software distributed under the License are
19 * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
20 * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
21 * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
22 * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
23 * Please see the License for the specific language governing rights and
24 * limitations under the License.
25 *
26 * @APPLE_OSREFERENCE_LICENSE_HEADER_END@
27 */
28/*
29 * Bootstrap Protocol (BOOTP). RFC 951.
30 */
31/*
32 * HISTORY
33 *
34 * 14 May 1992 ? at NeXT
35 * Added correct padding to struct nextvend. This is
36 * needed for the i386 due to alignment differences wrt
37 * the m68k. Also adjusted the size of the array fields
38 * because the NeXT vendor area was overflowing the bootp
39 * packet.
40 */
41
42#include <netinet/udp.h>
43
44#define iaddr_t struct in_addr
45
46struct bootp {
47 u_char bp_op; /* packet opcode type */
48#define BOOTREQUEST 1
49#define BOOTREPLY 2
50 u_char bp_htype; /* hardware addr type */
51 u_char bp_hlen; /* hardware addr length */
52 u_char bp_hops; /* gateway hops */
53 u_int32_t bp_xid; /* transaction ID */
54 u_short bp_secs; /* seconds since boot began */
55 u_short bp_unused;
56 iaddr_t bp_ciaddr; /* client IP address */
57 iaddr_t bp_yiaddr; /* 'your' IP address */
58 iaddr_t bp_siaddr; /* server IP address */
59 iaddr_t bp_giaddr; /* gateway IP address */
60 u_char bp_chaddr[16]; /* client hardware address */
61 u_char bp_sname[64]; /* server host name */
62 u_char bp_file[128]; /* boot file name */
63 u_char bp_vend[64]; /* vendor-specific area */
64};
65
66/*
67 * UDP port numbers, server and client.
68 */
69#define IPPORT_BOOTPS 67
70#define IPPORT_BOOTPC 68
71
72/*
73 * "vendor" data permitted for Stanford boot clients.
74 */
75struct vend {
76 u_char v_magic[4]; /* magic number */
77 u_int32_t v_flags; /* flags/opcodes, etc. */
78 u_char v_unused[56]; /* currently unused */
79};
80#define VM_STANFORD "STAN" /* v_magic for Stanford */
81
82/* v_flags values */
83#define VF_PCBOOT 1 /* an IBMPC or Mac wants environment info */
84#define VF_HELP 2 /* help me, I'm not registered */
85
86#define NVMAXTEXT 55 /* don't change this, it just fits RFC951 */
87struct nextvend {
88 u_char nv_magic[4]; /* Magic number for vendor specificity */
89 u_char nv_version; /* NeXT protocol version */
90 /*
91 * Round the beginning
92 * of the union to a 16
93 * bit boundary due to
94 * struct/union alignment
95 * on the m68k.
96 */
97 unsigned short :0;
98 union {
99 u_char NV0[58];
100 struct {
101 u_char NV1_opcode; /* opcode - Version 1 */
102 u_char NV1_xid; /* transcation id */
103 u_char NV1_text[NVMAXTEXT]; /* text */
104 u_char NV1_null; /* null terminator */
105 } NV1;
106 } nv_U;
107};
108#define nv_unused nv_U.NV0
109#define nv_opcode nv_U.NV1.NV1_opcode
110#define nv_xid nv_U.NV1.NV1_xid
111#define nv_text nv_U.NV1.NV1_text
112#define nv_null nv_U.NV1.NV1_null
113
114/* Magic number */
115#define VM_NEXT "NeXT" /* v_magic for NeXT, Inc. */
116
117/* Opcodes */
118#define BPOP_OK 0
119#define BPOP_QUERY 1
120#define BPOP_QUERY_NE 2
121#define BPOP_ERROR 3
122
123struct bootp_packet {
124 struct ip bp_ip;
125 struct udphdr bp_udp;
126 struct bootp bp_bootp;
127};
128
129#define BOOTP_PKTSIZE (sizeof (struct bootp_packet))
130
131/* backoffs must be masks */
132#define BOOTP_MIN_BACKOFF 0x7ff /* 2.048 sec */
133#define BOOTP_MAX_BACKOFF 0xffff /* 65.535 sec */
134#define BOOTP_RETRY 6 /* # retries */
135
136