Update DNS RR type definitions [BZ #20593]

This commit includes a new script which allows generating parts of
the header files from IANA DNS parameters protocol registry.
This commit is contained in:
Florian Weimer 2016-12-31 21:16:27 +01:00
parent fc82b0a2df
commit 4f157746e0
5 changed files with 270 additions and 101 deletions

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@ -1,3 +1,27 @@
2016-12-31 Florian Weimer <fweimer@redhat.com>
[BZ #20593]
Update DNS RR type definitions.
* scripts/gen-rrtypes.py: New file.
* resolv/arpa/nameser.h (ns_type): Remove ns_t_zxfr, a
BIND-internal RR type not used on the Internet. Add ns_t_ds,
ns_t_sshfp, ns_t_ipseckey, ns_t_rrsig, ns_t_nsec, ns_t_dnskey,
ns_t_dhcid, ns_t_nsec3, ns_t_nsec3param, ns_t_tlsa, ns_t_smimea,
ns_t_hip, ns_t_ninfo, ns_t_rkey, ns_t_talink, ns_t_cds,
ns_t_cdnskey, ns_t_openpgpkey, ns_t_csync, ns_t_spf, ns_t_uinfo,
ns_t_uid, ns_t_gid, ns_t_unspec, ns_t_nid, ns_t_l32, ns_t_l64,
ns_t_lp, ns_t_eui48, ns_t_eui64, ns_t_uri, ns_t_caa, ns_t_avc,
ns_t_ta, ns_t_dlv.
* resolv/arpa/nameser_compat.h (T_KX, T_CERT, T_SINK, T_OPT)
(T_APL, T_DS, T_SSHFP, T_IPSECKEY, T_RRSIG, T_NSEC, T_DNSKEY)
(T_DHCID, T_NSEC3, T_NSEC3PARAM, T_TLSA, T_SMIMEA, T_HIP, T_NINFO)
(T_RKEY, T_TALINK, T_CDS, T_CDNSKEY, T_OPENPGPKEY, T_CSYNC, T_SPF)
(T_UINFO, T_UID, T_GID, T_UNSPEC, T_NID, T_L32, T_L64, T_LP)
(T_EUI48, T_EUI64, T_TKEY, T_URI, T_CAA, T_AVC, T_TA, T_DLV):
Define.
* resolv/res_debug.c (__p_type_syms): Update comment. Remove
entry for ns_t_zxfr.
2016-12-31 Florian Weimer <fweimer@redhat.com>
[BZ #18784]

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@ -228,60 +228,97 @@ typedef struct ns_tcp_tsig_state ns_tcp_tsig_state;
/*%
* Currently defined type values for resources and queries.
*/
typedef enum __ns_type {
ns_t_invalid = 0, /*%< Cookie. */
ns_t_a = 1, /*%< Host address. */
ns_t_ns = 2, /*%< Authoritative server. */
ns_t_md = 3, /*%< Mail destination. */
ns_t_mf = 4, /*%< Mail forwarder. */
ns_t_cname = 5, /*%< Canonical name. */
ns_t_soa = 6, /*%< Start of authority zone. */
ns_t_mb = 7, /*%< Mailbox domain name. */
ns_t_mg = 8, /*%< Mail group member. */
ns_t_mr = 9, /*%< Mail rename name. */
ns_t_null = 10, /*%< Null resource record. */
ns_t_wks = 11, /*%< Well known service. */
ns_t_ptr = 12, /*%< Domain name pointer. */
ns_t_hinfo = 13, /*%< Host information. */
ns_t_minfo = 14, /*%< Mailbox information. */
ns_t_mx = 15, /*%< Mail routing information. */
ns_t_txt = 16, /*%< Text strings. */
ns_t_rp = 17, /*%< Responsible person. */
ns_t_afsdb = 18, /*%< AFS cell database. */
ns_t_x25 = 19, /*%< X_25 calling address. */
ns_t_isdn = 20, /*%< ISDN calling address. */
ns_t_rt = 21, /*%< Router. */
ns_t_nsap = 22, /*%< NSAP address. */
ns_t_nsap_ptr = 23, /*%< Reverse NSAP lookup (deprecated). */
ns_t_sig = 24, /*%< Security signature. */
ns_t_key = 25, /*%< Security key. */
ns_t_px = 26, /*%< X.400 mail mapping. */
ns_t_gpos = 27, /*%< Geographical position (withdrawn). */
ns_t_aaaa = 28, /*%< Ip6 Address. */
ns_t_loc = 29, /*%< Location Information. */
ns_t_nxt = 30, /*%< Next domain (security). */
ns_t_eid = 31, /*%< Endpoint identifier. */
ns_t_nimloc = 32, /*%< Nimrod Locator. */
ns_t_srv = 33, /*%< Server Selection. */
ns_t_atma = 34, /*%< ATM Address */
ns_t_naptr = 35, /*%< Naming Authority PoinTeR */
ns_t_kx = 36, /*%< Key Exchange */
ns_t_cert = 37, /*%< Certification record */
ns_t_a6 = 38, /*%< IPv6 address (deprecated, use ns_t_aaaa) */
ns_t_dname = 39, /*%< Non-terminal DNAME (for IPv6) */
ns_t_sink = 40, /*%< Kitchen sink (experimentatl) */
ns_t_opt = 41, /*%< EDNS0 option (meta-RR) */
ns_t_apl = 42, /*%< Address prefix list (RFC3123) */
ns_t_tkey = 249, /*%< Transaction key */
ns_t_tsig = 250, /*%< Transaction signature. */
ns_t_ixfr = 251, /*%< Incremental zone transfer. */
ns_t_axfr = 252, /*%< Transfer zone of authority. */
ns_t_mailb = 253, /*%< Transfer mailbox records. */
ns_t_maila = 254, /*%< Transfer mail agent records. */
ns_t_any = 255, /*%< Wildcard match. */
ns_t_zxfr = 256, /*%< BIND-specific, nonstandard. */
ns_t_max = 65536
} ns_type;
typedef enum __ns_type
{
ns_t_invalid = 0,
ns_t_a = 1,
ns_t_ns = 2,
ns_t_md = 3,
ns_t_mf = 4,
ns_t_cname = 5,
ns_t_soa = 6,
ns_t_mb = 7,
ns_t_mg = 8,
ns_t_mr = 9,
ns_t_null = 10,
ns_t_wks = 11,
ns_t_ptr = 12,
ns_t_hinfo = 13,
ns_t_minfo = 14,
ns_t_mx = 15,
ns_t_txt = 16,
ns_t_rp = 17,
ns_t_afsdb = 18,
ns_t_x25 = 19,
ns_t_isdn = 20,
ns_t_rt = 21,
ns_t_nsap = 22,
ns_t_nsap_ptr = 23,
ns_t_sig = 24,
ns_t_key = 25,
ns_t_px = 26,
ns_t_gpos = 27,
ns_t_aaaa = 28,
ns_t_loc = 29,
ns_t_nxt = 30,
ns_t_eid = 31,
ns_t_nimloc = 32,
ns_t_srv = 33,
ns_t_atma = 34,
ns_t_naptr = 35,
ns_t_kx = 36,
ns_t_cert = 37,
ns_t_a6 = 38,
ns_t_dname = 39,
ns_t_sink = 40,
ns_t_opt = 41,
ns_t_apl = 42,
ns_t_ds = 43,
ns_t_sshfp = 44,
ns_t_ipseckey = 45,
ns_t_rrsig = 46,
ns_t_nsec = 47,
ns_t_dnskey = 48,
ns_t_dhcid = 49,
ns_t_nsec3 = 50,
ns_t_nsec3param = 51,
ns_t_tlsa = 52,
ns_t_smimea = 53,
ns_t_hip = 55,
ns_t_ninfo = 56,
ns_t_rkey = 57,
ns_t_talink = 58,
ns_t_cds = 59,
ns_t_cdnskey = 60,
ns_t_openpgpkey = 61,
ns_t_csync = 62,
ns_t_spf = 99,
ns_t_uinfo = 100,
ns_t_uid = 101,
ns_t_gid = 102,
ns_t_unspec = 103,
ns_t_nid = 104,
ns_t_l32 = 105,
ns_t_l64 = 106,
ns_t_lp = 107,
ns_t_eui48 = 108,
ns_t_eui64 = 109,
ns_t_tkey = 249,
ns_t_tsig = 250,
ns_t_ixfr = 251,
ns_t_axfr = 252,
ns_t_mailb = 253,
ns_t_maila = 254,
ns_t_any = 255,
ns_t_uri = 256,
ns_t_caa = 257,
ns_t_avc = 258,
ns_t_ta = 32768,
ns_t_dlv = 32769,
ns_t_max = 65536
} ns_type;
/*%
* Values for class field

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@ -120,49 +120,90 @@ typedef struct {
#define DELETE ns_uop_delete
#define ADD ns_uop_add
#define T_A ns_t_a
#define T_NS ns_t_ns
#define T_MD ns_t_md
#define T_MF ns_t_mf
#define T_CNAME ns_t_cname
#define T_SOA ns_t_soa
#define T_MB ns_t_mb
#define T_MG ns_t_mg
#define T_MR ns_t_mr
#define T_NULL ns_t_null
#define T_WKS ns_t_wks
#define T_PTR ns_t_ptr
#define T_HINFO ns_t_hinfo
#define T_MINFO ns_t_minfo
#define T_MX ns_t_mx
#define T_TXT ns_t_txt
#define T_RP ns_t_rp
#define T_AFSDB ns_t_afsdb
#define T_X25 ns_t_x25
#define T_ISDN ns_t_isdn
#define T_RT ns_t_rt
#define T_NSAP ns_t_nsap
#define T_NSAP_PTR ns_t_nsap_ptr
#define T_SIG ns_t_sig
#define T_KEY ns_t_key
#define T_PX ns_t_px
#define T_GPOS ns_t_gpos
#define T_AAAA ns_t_aaaa
#define T_LOC ns_t_loc
#define T_NXT ns_t_nxt
#define T_EID ns_t_eid
#define T_NIMLOC ns_t_nimloc
#define T_SRV ns_t_srv
#define T_ATMA ns_t_atma
#define T_NAPTR ns_t_naptr
#define T_A6 ns_t_a6
#define T_DNAME ns_t_dname
#define T_TSIG ns_t_tsig
#define T_IXFR ns_t_ixfr
#define T_AXFR ns_t_axfr
#define T_MAILB ns_t_mailb
#define T_MAILA ns_t_maila
#define T_ANY ns_t_any
#define T_A ns_t_a
#define T_NS ns_t_ns
#define T_MD ns_t_md
#define T_MF ns_t_mf
#define T_CNAME ns_t_cname
#define T_SOA ns_t_soa
#define T_MB ns_t_mb
#define T_MG ns_t_mg
#define T_MR ns_t_mr
#define T_NULL ns_t_null
#define T_WKS ns_t_wks
#define T_PTR ns_t_ptr
#define T_HINFO ns_t_hinfo
#define T_MINFO ns_t_minfo
#define T_MX ns_t_mx
#define T_TXT ns_t_txt
#define T_RP ns_t_rp
#define T_AFSDB ns_t_afsdb
#define T_X25 ns_t_x25
#define T_ISDN ns_t_isdn
#define T_RT ns_t_rt
#define T_NSAP ns_t_nsap
#define T_NSAP_PTR ns_t_nsap_ptr
#define T_SIG ns_t_sig
#define T_KEY ns_t_key
#define T_PX ns_t_px
#define T_GPOS ns_t_gpos
#define T_AAAA ns_t_aaaa
#define T_LOC ns_t_loc
#define T_NXT ns_t_nxt
#define T_EID ns_t_eid
#define T_NIMLOC ns_t_nimloc
#define T_SRV ns_t_srv
#define T_ATMA ns_t_atma
#define T_NAPTR ns_t_naptr
#define T_KX ns_t_kx
#define T_CERT ns_t_cert
#define T_A6 ns_t_a6
#define T_DNAME ns_t_dname
#define T_SINK ns_t_sink
#define T_OPT ns_t_opt
#define T_APL ns_t_apl
#define T_DS ns_t_ds
#define T_SSHFP ns_t_sshfp
#define T_IPSECKEY ns_t_ipseckey
#define T_RRSIG ns_t_rrsig
#define T_NSEC ns_t_nsec
#define T_DNSKEY ns_t_dnskey
#define T_DHCID ns_t_dhcid
#define T_NSEC3 ns_t_nsec3
#define T_NSEC3PARAM ns_t_nsec3param
#define T_TLSA ns_t_tlsa
#define T_SMIMEA ns_t_smimea
#define T_HIP ns_t_hip
#define T_NINFO ns_t_ninfo
#define T_RKEY ns_t_rkey
#define T_TALINK ns_t_talink
#define T_CDS ns_t_cds
#define T_CDNSKEY ns_t_cdnskey
#define T_OPENPGPKEY ns_t_openpgpkey
#define T_CSYNC ns_t_csync
#define T_SPF ns_t_spf
#define T_UINFO ns_t_uinfo
#define T_UID ns_t_uid
#define T_GID ns_t_gid
#define T_UNSPEC ns_t_unspec
#define T_NID ns_t_nid
#define T_L32 ns_t_l32
#define T_L64 ns_t_l64
#define T_LP ns_t_lp
#define T_EUI48 ns_t_eui48
#define T_EUI64 ns_t_eui64
#define T_TKEY ns_t_tkey
#define T_TSIG ns_t_tsig
#define T_IXFR ns_t_ixfr
#define T_AXFR ns_t_axfr
#define T_MAILB ns_t_mailb
#define T_MAILA ns_t_maila
#define T_ANY ns_t_any
#define T_URI ns_t_uri
#define T_CAA ns_t_caa
#define T_AVC ns_t_avc
#define T_TA ns_t_ta
#define T_DLV ns_t_dlv
#define C_IN ns_c_in
#define C_CHAOS ns_c_chaos

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@ -372,9 +372,8 @@ const struct res_sym __p_update_section_syms[] attribute_hidden = {
};
/*
* Names of RR types and qtypes. Types and qtypes are the same, except
* that T_ANY is a qtype but not a type. (You can ask for records of type
* T_ANY, but you can't have any records of that type in the database.)
* Names of RR types and qtypes. The list is incomplete because its
* size is part of the ABI.
*/
extern const struct res_sym __p_type_syms[];
libresolv_hidden_proto (__p_type_syms)
@ -418,13 +417,13 @@ const struct res_sym __p_type_syms[] = {
{ns_t_tsig, (char *) "TSIG", (char *) "transaction signature"},
{ns_t_ixfr, (char *) "IXFR", (char *) "incremental zone transfer"},
{ns_t_axfr, (char *) "AXFR", (char *) "zone transfer"},
{ns_t_zxfr, (char *) "ZXFR", (char *) "compressed zone transfer"},
{ns_t_mailb, (char *) "MAILB", (char *) "mailbox-related data (deprecated)"},
{ns_t_maila, (char *) "MAILA", (char *) "mail agent (deprecated)"},
{ns_t_naptr, (char *) "NAPTR", (char *) "URN Naming Authority"},
{ns_t_kx, (char *) "KX", (char *) "Key Exchange"},
{ns_t_cert, (char *) "CERT", (char *) "Certificate"},
{ns_t_any, (char *) "ANY", (char *) "\"any\""},
{0, NULL, NULL}, /* Padding to preserve ABI. */
{0, NULL, NULL}
};
libresolv_hidden_data_def (__p_type_syms)

68
scripts/gen-rrtypes.py Normal file
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@ -0,0 +1,68 @@
#!/usr/bin/python3
# Generate DNS RR type constants for resolv header files.
# Copyright (C) 2016 Free Software Foundation, Inc.
# This file is part of the GNU C Library.
#
# The GNU C Library is free software; you can redistribute it and/or
# modify it under the terms of the GNU Lesser General Public
# License as published by the Free Software Foundation; either
# version 2.1 of the License, or (at your option) any later version.
#
# The GNU C Library is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
# Lesser General Public License for more details.
#
# You should have received a copy of the GNU Lesser General Public
# License along with the GNU C Library; if not, see
# <http://www.gnu.org/licenses/>.
"""Generate DNS RR type constants for resolv header files.
resolv/arpa/nameser.h and resolv/arpa/nameser_compat.h contain lists
of RR type constants. This script downloads the current definitions
from the IANA DNS Parameters protocol registry and translates it into
the two different lists.
Two lists are written to standard output. The first one contains enum
constants for resolv/arpa/nameser.h. The second one lists the
preprocessor macros for resolv/arpa/nameser_compat.h.
"""
# URL of the IANA registry.
source = "http://www.iana.org/assignments/dns-parameters/dns-parameters-4.csv"
import collections
import csv
import io
import urllib.request
Type = collections.namedtuple("Type", "name number comment")
def get_types(source):
for row in csv.reader(io.TextIOWrapper(urllib.request.urlopen(source))):
if row[0] in ('TYPE', 'Unassigned', 'Private use', 'Reserved'):
continue
name, number, comment = row[:3]
if name == '*':
name = 'ANY'
comment = 'request for all cached records'
number = int(number)
yield Type(name, number, comment)
types = list(get_types(source))
print("// enum constants for resolv/arpa/nameser.h")
print()
for typ in types:
name = typ.name.replace("-", "_").lower()
print(" ns_t_{0} = {1.number},".format(name, typ))
print()
print("// macro aliases resolv/arpa/nameser_compat.h")
print()
for typ in types:
name = typ.name.replace("-", "_")
print("#define T_{0} ns_t_{1}".format(name.upper(), name.lower()))
print()