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1/* $OpenBSD: bootp.h,v 1.5 2003/08/11 06:23:09 deraadt Exp $ */
2/* $NetBSD: bootp.h,v 1.3 1996/09/26 23:22:01 cgd Exp $ */
3
4/*
5 * Bootstrap Protocol (BOOTP). RFC951 and RFC1048.
6 *
7 * This file specifies the "implementation-independent" BOOTP protocol
8 * information which is common to both client and server.
9 *
10 * Copyright 1988 by Carnegie Mellon.
11 *
12 * Permission to use, copy, modify, and distribute this program for any
13 * purpose and without fee is hereby granted, provided that this copyright
14 * and permission notice appear on all copies and supporting documentation,
15 * the name of Carnegie Mellon not be used in advertising or publicity
16 * pertaining to distribution of the program without specific prior
17 * permission, and notice be given in supporting documentation that copying
18 * and distribution is by permission of Carnegie Mellon and Stanford
19 * University. Carnegie Mellon makes no representations about the
20 * suitability of this software for any purpose. It is provided "as is"
21 * without express or implied warranty.
22 */
23
24#define BP_CHADDR_LEN 16
25#define BP_SNAME_LEN 64
26#define BP_FILE_LEN 128
27#define BP_VEND_LEN 64
28#define BP_MINPKTSZ 300 /* to check sizeof(struct bootp) */
29
30
31struct bootp {
32 u_char bp_op; /* packet opcode type */
33 u_char bp_htype; /* hardware addr type */
34 u_char bp_hlen; /* hardware addr length */
35 u_char bp_hops; /* gateway hops */
36 u_int bp_xid; /* transaction ID */
37 u_short bp_secs; /* seconds since boot began */
38 u_short bp_flags; /* RFC1532 broadcast, etc. */
39 struct in_addr bp_ciaddr; /* client IP address */
40 struct in_addr bp_yiaddr; /* 'your' IP address */
41 struct in_addr bp_siaddr; /* server IP address */
42 struct in_addr bp_giaddr; /* gateway IP address */
43 u_char bp_chaddr[BP_CHADDR_LEN];/* client hardware address */
44 u_char bp_sname[BP_SNAME_LEN]; /* server host name */
45 u_char bp_file[BP_FILE_LEN]; /* boot file name */
46 u_char bp_vend[BP_VEND_LEN]; /* vendor-specific area */
47};
48
49/*
50 * UDP port numbers, server and client.
51 */
52#define IPPORT_BOOTPS 67
53#define IPPORT_BOOTPC 68
54
55#define BOOTREPLY 2
56#define BOOTREQUEST 1
57
58/*
59 * Hardware types from Assigned Numbers RFC.
60 */
61#define HTYPE_ETHERNET 1
62#define HTYPE_EXP_ETHERNET 2
63#define HTYPE_AX25 3
64#define HTYPE_PRONET 4
65#define HTYPE_CHAOS 5
66#define HTYPE_IEEE802 6
67#define HTYPE_ARCNET 7
68
69/*
70 * Vendor magic cookie (v_magic) for CMU
71 */
72#define VM_CMU "CMU"
73
74/*
75 * Vendor magic cookie (v_magic) for RFC1048
76 */
77#define VM_RFC1048 { 99, 130, 83, 99 }
78
79
80
81/*
82 * RFC1048 tag values used to specify what information is being supplied in
83 * the vendor field of the packet.
84 */
85
86#define TAG_PAD ((unsigned char) 0)
87#define TAG_SUBNET_MASK ((unsigned char) 1)
88#define TAG_TIME_OFFSET ((unsigned char) 2)
89#define TAG_GATEWAY ((unsigned char) 3)
90#define TAG_TIME_SERVER ((unsigned char) 4)
91#define TAG_NAME_SERVER ((unsigned char) 5)
92#define TAG_DOMAIN_SERVER ((unsigned char) 6)
93#define TAG_LOG_SERVER ((unsigned char) 7)
94#define TAG_COOKIE_SERVER ((unsigned char) 8)
95#define TAG_LPR_SERVER ((unsigned char) 9)
96#define TAG_IMPRESS_SERVER ((unsigned char) 10)
97#define TAG_RLP_SERVER ((unsigned char) 11)
98#define TAG_HOSTNAME ((unsigned char) 12)
99#define TAG_BOOTSIZE ((unsigned char) 13)
100#define TAG_DUMPFILE ((unsigned char) 14)
101#define TAG_DOMAINNAME ((unsigned char) 15)
102#define TAG_SWAPSERVER ((unsigned char) 16)
103#define TAG_ROOTPATH ((unsigned char) 17)
104#define TAG_EXTEN_FILE ((unsigned char) 18)
105#define TAG_NIS_DOMAIN ((unsigned char) 40)
106#define TAG_NIS_SERVER ((unsigned char) 41)
107#define TAG_NTP_SERVER ((unsigned char) 42)
108#define TAG_MAX_MSGSZ ((unsigned char) 57)
109#define TAG_END ((unsigned char) 255)
110
111
112
113/*
114 * "vendor" data permitted for CMU bootp clients.
115 */
116
117struct cmu_vend {
118 unsigned char v_magic[4]; /* magic number */
119 unsigned int v_flags; /* flags/opcodes, etc. */
120 struct in_addr v_smask; /* Subnet mask */
121 struct in_addr v_dgate; /* Default gateway */
122 struct in_addr v_dns1, v_dns2; /* Domain name servers */
123 struct in_addr v_ins1, v_ins2; /* IEN-116 name servers */
124 struct in_addr v_ts1, v_ts2; /* Time servers */
125 unsigned char v_unused[25]; /* currently unused */
126};
127
128/* v_flags values */
129#define VF_SMASK 1 /* Subnet mask field contains valid data */
130
131void bootp(int);