version 1.1.1.2, 2014/06/15 16:31:38
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version 1.1.1.5, 2023/09/27 11:02:07
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/* dnsmasq is Copyright (c) 2000-2014 Simon Kelley | /* dnsmasq is Copyright (c) 2000-2022 Simon Kelley |
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This program is free software; you can redistribute it and/or modify |
This program is free software; you can redistribute it and/or modify |
it under the terms of the GNU General Public License as published by |
it under the terms of the GNU General Public License as published by |
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#define NAMESERVER_PORT 53 |
#define NAMESERVER_PORT 53 |
#define TFTP_PORT 69 |
#define TFTP_PORT 69 |
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#define MIN_PORT 1024 /* first non-reserved port */ |
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#define MAX_PORT 65535u |
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#define IN6ADDRSZ 16 |
#define IN6ADDRSZ 16 |
#define INADDRSZ 4 |
#define INADDRSZ 4 |
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#define T_AXFR 252 |
#define T_AXFR 252 |
#define T_MAILB 253 |
#define T_MAILB 253 |
#define T_ANY 255 |
#define T_ANY 255 |
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#define T_CAA 257 |
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#define EDNS0_OPTION_MAC 65001 /* dyndns.org temporary assignment */ |
#define EDNS0_OPTION_MAC 65001 /* dyndns.org temporary assignment */ |
#define EDNS0_OPTION_CLIENT_SUBNET 8 /* IANA */ |
#define EDNS0_OPTION_CLIENT_SUBNET 8 /* IANA */ |
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#define EDNS0_OPTION_EDE 15 /* IANA - RFC 8914 */ |
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#define EDNS0_OPTION_NOMDEVICEID 65073 /* Nominum temporary assignment */ |
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#define EDNS0_OPTION_NOMCPEID 65074 /* Nominum temporary assignment */ |
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#define EDNS0_OPTION_UMBRELLA 20292 /* Cisco Umbrella temporary assignment */ |
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/* RFC-8914 extended errors, negative values are our definitions */ |
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#define EDE_UNSET -1 /* No extended DNS error available */ |
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#define EDE_OTHER 0 /* Other */ |
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#define EDE_USUPDNSKEY 1 /* Unsupported DNSKEY algo */ |
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#define EDE_USUPDS 2 /* Unsupported DS Digest */ |
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#define EDE_STALE 3 /* Stale answer */ |
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#define EDE_FORGED 4 /* Forged answer */ |
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#define EDE_DNSSEC_IND 5 /* DNSSEC Indeterminate */ |
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#define EDE_DNSSEC_BOGUS 6 /* DNSSEC Bogus */ |
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#define EDE_SIG_EXP 7 /* Signature Expired */ |
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#define EDE_SIG_NYV 8 /* Signature Not Yet Valid */ |
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#define EDE_NO_DNSKEY 9 /* DNSKEY missing */ |
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#define EDE_NO_RRSIG 10 /* RRSIGs missing */ |
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#define EDE_NO_ZONEKEY 11 /* No Zone Key Bit Set */ |
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#define EDE_NO_NSEC 12 /* NSEC Missing */ |
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#define EDE_CACHED_ERR 13 /* Cached Error */ |
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#define EDE_NOT_READY 14 /* Not Ready */ |
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#define EDE_BLOCKED 15 /* Blocked */ |
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#define EDE_CENSORED 16 /* Censored */ |
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#define EDE_FILTERED 17 /* Filtered */ |
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#define EDE_PROHIBITED 18 /* Prohibited */ |
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#define EDE_STALE_NXD 19 /* Stale NXDOMAIN */ |
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#define EDE_NOT_AUTH 20 /* Not Authoritative */ |
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#define EDE_NOT_SUP 21 /* Not Supported */ |
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#define EDE_NO_AUTH 22 /* No Reachable Authority */ |
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#define EDE_NETERR 23 /* Network error */ |
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#define EDE_INVALID_DATA 24 /* Invalid Data */ |
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struct dns_header { |
struct dns_header { |
u16 id; |
u16 id; |
u8 hb3,hb4; |
u8 hb3,hb4; |
u16 qdcount,ancount,nscount,arcount; |
u16 qdcount,ancount,nscount,arcount; |
}; |
}; |
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#define HB3_QR 0x80 | #define HB3_QR 0x80 /* Query */ |
#define HB3_OPCODE 0x78 |
#define HB3_OPCODE 0x78 |
#define HB3_AA 0x04 | #define HB3_AA 0x04 /* Authoritative Answer */ |
#define HB3_TC 0x02 | #define HB3_TC 0x02 /* TrunCated */ |
#define HB3_RD 0x01 | #define HB3_RD 0x01 /* Recursion Desired */ |
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#define HB4_RA 0x80 | #define HB4_RA 0x80 /* Recursion Available */ |
#define HB4_AD 0x20 | #define HB4_AD 0x20 /* Authenticated Data */ |
#define HB4_CD 0x10 | #define HB4_CD 0x10 /* Checking Disabled */ |
#define HB4_RCODE 0x0f |
#define HB4_RCODE 0x0f |
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#define OPCODE(x) (((x)->hb3 & HB3_OPCODE) >> 3) |
#define OPCODE(x) (((x)->hb3 & HB3_OPCODE) >> 3) |
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Line 180 struct dns_header {
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#define ADD_RDLEN(header, pp, plen, len) \ |
#define ADD_RDLEN(header, pp, plen, len) \ |
(!CHECK_LEN(header, pp, plen, len) ? 0 : (((pp) += (len)), 1)) |
(!CHECK_LEN(header, pp, plen, len) ? 0 : (((pp) += (len)), 1)) |
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/* Escape character in our presentation format for names. |
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Cannot be '.' or /000 and must be !isprint(). |
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Note that escaped chars are stored as |
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<NAME_ESCAPE> <orig-char+1> |
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to ensure that the escaped form of /000 doesn't include /000 |
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*/ |
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#define NAME_ESCAPE 1 |