ISC DHCP  4.4.2b1
A reference DHCPv4 and DHCPv6 implementation
nameser_compat.h
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1 /* Copyright (c) 1983, 1989
2  * The Regents of the University of California. All rights reserved.
3  *
4  * Redistribution and use in source and binary forms, with or without
5  * modification, are permitted provided that the following conditions
6  * are met:
7  * 1. Redistributions of source code must retain the above copyright
8  * notice, this list of conditions and the following disclaimer.
9  * 2. Redistributions in binary form must reproduce the above copyright
10  * notice, this list of conditions and the following disclaimer in the
11  * documentation and/or other materials provided with the distribution.
12  * 3. Neither the name of the University nor the names of its contributors
13  * may be used to endorse or promote products derived from this software
14  * without specific prior written permission.
15  *
16  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
17  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
18  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
19  * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
20  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
21  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
22  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
23  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
24  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
25  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
26  * SUCH DAMAGE.
27  */
28 
29 /*
30  * from nameser.h 8.1 (Berkeley) 6/2/93
31  * $Id: nameser_compat.h,v 1.2 2000/01/27 23:28:08 mellon Exp $
32  */
33 
34 #ifndef _ARPA_NAMESER_COMPAT_
35 #define _ARPA_NAMESER_COMPAT_
36 
37 /*
38  * Structure for query header. The order of the fields is machine- and
39  * compiler-dependent, depending on the byte/bit order and the layout
40  * of bit fields. We use bit fields only in int variables, as this
41  * is all ANSI requires. This requires a somewhat confusing rearrangement.
42  */
43 
44 typedef struct {
45  unsigned id :16; /* query identification number */
46 #if BYTE_ORDER == BIG_ENDIAN
47  /* fields in third byte */
48  unsigned qr: 1; /* response flag */
49  unsigned opcode: 4; /* purpose of message */
50  unsigned aa: 1; /* authoritive answer */
51  unsigned tc: 1; /* truncated message */
52  unsigned rd: 1; /* recursion desired */
53  /* fields in fourth byte */
54  unsigned ra: 1; /* recursion available */
55  unsigned unused :1; /* unused bits (MBZ as of 4.9.3a3) */
56  unsigned ad: 1; /* authentic data from named */
57  unsigned cd: 1; /* checking disabled by resolver */
58  unsigned rcode :4; /* response code */
59 #endif
60 #if BYTE_ORDER == LITTLE_ENDIAN || BYTE_ORDER == PDP_ENDIAN
61  /* fields in third byte */
62  unsigned rd :1; /* recursion desired */
63  unsigned tc :1; /* truncated message */
64  unsigned aa :1; /* authoritive answer */
65  unsigned opcode :4; /* purpose of message */
66  unsigned qr :1; /* response flag */
67  /* fields in fourth byte */
68  unsigned rcode :4; /* response code */
69  unsigned cd: 1; /* checking disabled by resolver */
70  unsigned ad: 1; /* authentic data from named */
71  unsigned unused :1; /* unused bits (MBZ as of 4.9.3a3) */
72  unsigned ra :1; /* recursion available */
73 #endif
74  /* remaining bytes */
75  unsigned qdcount :16; /* number of question entries */
76  unsigned ancount :16; /* number of answer entries */
77  unsigned nscount :16; /* number of authority entries */
78  unsigned arcount :16; /* number of resource entries */
79 } HEADER;
80 
81 #define PACKETSZ NS_PACKETSZ
82 #define MAXDNAME NS_MAXDNAME
83 #define MAXCDNAME NS_MAXCDNAME
84 #define MAXLABEL NS_MAXLABEL
85 #define HFIXEDSZ NS_HFIXEDSZ
86 #define QFIXEDSZ NS_QFIXEDSZ
87 #define RRFIXEDSZ NS_RRFIXEDSZ
88 #define INT32SZ NS_INT32SZ
89 #define INT16SZ NS_INT16SZ
90 #define INADDRSZ NS_INADDRSZ
91 #define IN6ADDRSZ NS_IN6ADDRSZ
92 #define INDIR_MASK NS_CMPRSFLGS
93 #define NAMESERVER_PORT NS_DEFAULTPORT
94 
95 #define S_ZONE ns_s_zn
96 #define S_PREREQ ns_s_pr
97 #define S_UPDATE ns_s_ud
98 #define S_ADDT ns_s_ar
99 
100 #define QUERY ns_o_query
101 #define IQUERY ns_o_iquery
102 #define STATUS ns_o_status
103 #define NS_NOTIFY_OP ns_o_notify
104 #define NS_UPDATE_OP ns_o_update
105 
106 #define NOERROR ns_r_noerror
107 #define FORMERR ns_r_formerr
108 #define SERVFAIL ns_r_servfail
109 #define NXDOMAIN ns_r_nxdomain
110 #define NOTIMP ns_r_notimpl
111 #define REFUSED ns_r_refused
112 #define YXDOMAIN ns_r_yxdomain
113 #define YXRRSET ns_r_yxrrset
114 #define NXRRSET ns_r_nxrrset
115 #define NOTAUTH ns_r_notauth
116 #define NOTZONE ns_r_notzone
117 /*#define BADSIG ns_r_badsig*/
118 /*#define BADKEY ns_r_badkey*/
119 /*#define BADTIME ns_r_badtime*/
120 
121 
122 #define DELETE ns_uop_delete
123 #define ADD ns_uop_add
124 
125 #define T_A ns_t_a
126 #define T_NS ns_t_ns
127 #define T_MD ns_t_md
128 #define T_MF ns_t_mf
129 #define T_CNAME ns_t_cname
130 #define T_SOA ns_t_soa
131 #define T_MB ns_t_mb
132 #define T_MG ns_t_mg
133 #define T_MR ns_t_mr
134 #define T_NULL ns_t_null
135 #define T_WKS ns_t_wks
136 #define T_PTR ns_t_ptr
137 #define T_HINFO ns_t_hinfo
138 #define T_MINFO ns_t_minfo
139 #define T_MX ns_t_mx
140 #define T_TXT ns_t_txt
141 #define T_RP ns_t_rp
142 #define T_AFSDB ns_t_afsdb
143 #define T_X25 ns_t_x25
144 #define T_ISDN ns_t_isdn
145 #define T_RT ns_t_rt
146 #define T_NSAP ns_t_nsap
147 #define T_NSAP_PTR ns_t_nsap_ptr
148 #define T_SIG ns_t_sig
149 #define T_KEY ns_t_key
150 #define T_PX ns_t_px
151 #define T_GPOS ns_t_gpos
152 #define T_AAAA ns_t_aaaa
153 #define T_LOC ns_t_loc
154 #define T_NXT ns_t_nxt
155 #define T_EID ns_t_eid
156 #define T_NIMLOC ns_t_nimloc
157 #define T_SRV ns_t_srv
158 #define T_ATMA ns_t_atma
159 #define T_NAPTR ns_t_naptr
160 #define T_TSIG ns_t_tsig
161 #define T_IXFR ns_t_ixfr
162 #define T_AXFR ns_t_axfr
163 #define T_MAILB ns_t_mailb
164 #define T_MAILA ns_t_maila
165 #define T_ANY ns_t_any
166 
167 #define C_IN ns_c_in
168 #define C_CHAOS ns_c_chaos
169 #define C_HS ns_c_hs
170 /* BIND_UPDATE */
171 #define C_NONE ns_c_none
172 #define C_ANY ns_c_any
173 
174 #define GETSHORT NS_GET16
175 #define GETLONG NS_GET32
176 #define PUTSHORT NS_PUT16
177 #define PUTLONG NS_PUT32
178 
179 #endif /* _ARPA_NAMESER_COMPAT_ */
unsigned opcode
unsigned unused
unsigned tc
unsigned rcode
unsigned qr
unsigned cd
unsigned rd
unsigned ancount
unsigned nscount
unsigned qdcount
unsigned aa
unsigned id
unsigned ra
unsigned arcount
unsigned ad