Changes to update Tomato RAF.
[tomato.git] / release / src / router / dnsmasq / src / dns-protocol.h
blob80eff720a9dcc2f78f8ed9c790bb1e243e995ce7
1 /* dnsmasq is Copyright (c) 2000-2013 Simon Kelley
3 This program is free software; you can redistribute it and/or modify
4 it under the terms of the GNU General Public License as published by
5 the Free Software Foundation; version 2 dated June, 1991, or
6 (at your option) version 3 dated 29 June, 2007.
8 This program is distributed in the hope that it will be useful,
9 but WITHOUT ANY WARRANTY; without even the implied warranty of
10 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
11 GNU General Public License for more details.
13 You should have received a copy of the GNU General Public License
14 along with this program. If not, see <http://www.gnu.org/licenses/>.
17 #define NAMESERVER_PORT 53
18 #define TFTP_PORT 69
20 #define IN6ADDRSZ 16
21 #define INADDRSZ 4
23 #define PACKETSZ 512 /* maximum packet size */
24 #define MAXDNAME 1025 /* maximum presentation domain name */
25 #define RRFIXEDSZ 10 /* #/bytes of fixed data in r record */
26 #define MAXLABEL 63 /* maximum length of domain label */
28 #define NOERROR 0 /* no error */
29 #define FORMERR 1 /* format error */
30 #define SERVFAIL 2 /* server failure */
31 #define NXDOMAIN 3 /* non existent domain */
32 #define NOTIMP 4 /* not implemented */
33 #define REFUSED 5 /* query refused */
35 #define QUERY 0 /* opcode */
37 #define C_IN 1 /* the arpa internet */
38 #define C_CHAOS 3 /* for chaos net (MIT) */
39 #define C_ANY 255 /* wildcard match */
41 #define T_A 1
42 #define T_NS 2
43 #define T_CNAME 5
44 #define T_SOA 6
45 #define T_PTR 12
46 #define T_MX 15
47 #define T_TXT 16
48 #define T_SIG 24
49 #define T_AAAA 28
50 #define T_SRV 33
51 #define T_NAPTR 35
52 #define T_OPT 41
53 #define T_TKEY 249
54 #define T_TSIG 250
55 #define T_AXFR 252
56 #define T_MAILB 253
57 #define T_ANY 255
59 struct dns_header {
60 u16 id;
61 u8 hb3,hb4;
62 u16 qdcount,ancount,nscount,arcount;
65 #define HB3_QR 0x80
66 #define HB3_OPCODE 0x78
67 #define HB3_AA 0x04
68 #define HB3_TC 0x02
69 #define HB3_RD 0x01
71 #define HB4_RA 0x80
72 #define HB4_AD 0x20
73 #define HB4_CD 0x10
74 #define HB4_RCODE 0x0f
76 #define OPCODE(x) (((x)->hb3 & HB3_OPCODE) >> 3)
77 #define RCODE(x) ((x)->hb4 & HB4_RCODE)
78 #define SET_RCODE(x, code) (x)->hb4 = ((x)->hb4 & ~HB4_RCODE) | code
80 #define GETSHORT(s, cp) { \
81 unsigned char *t_cp = (unsigned char *)(cp); \
82 (s) = ((u16)t_cp[0] << 8) \
83 | ((u16)t_cp[1]) \
84 ; \
85 (cp) += 2; \
88 #define GETLONG(l, cp) { \
89 unsigned char *t_cp = (unsigned char *)(cp); \
90 (l) = ((u32)t_cp[0] << 24) \
91 | ((u32)t_cp[1] << 16) \
92 | ((u32)t_cp[2] << 8) \
93 | ((u32)t_cp[3]) \
94 ; \
95 (cp) += 4; \
98 #define PUTSHORT(s, cp) { \
99 u16 t_s = (u16)(s); \
100 unsigned char *t_cp = (unsigned char *)(cp); \
101 *t_cp++ = t_s >> 8; \
102 *t_cp = t_s; \
103 (cp) += 2; \
106 #define PUTLONG(l, cp) { \
107 u32 t_l = (u32)(l); \
108 unsigned char *t_cp = (unsigned char *)(cp); \
109 *t_cp++ = t_l >> 24; \
110 *t_cp++ = t_l >> 16; \
111 *t_cp++ = t_l >> 8; \
112 *t_cp = t_l; \
113 (cp) += 4; \