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rr-dict.c
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1403 lines (1326 loc) · 54.2 KB
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/**
*
* /brief getdns support functions for DNS Resource Records
*
* This file contains the tables with the information needed by getdns about
* individual RRs, such as their name and rdata fields and types.
* This information is provided via the response dict.
*
*/
/*
* Copyright (c) 2013, NLnet Labs, Verisign, Inc.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* * Neither the names of the copyright holders nor the
* names of its contributors may be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL Verisign, Inc. BE LIABLE FOR ANY
* DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include "rr-dict.h"
#include "types-internal.h"
#include "context.h"
#include "dict.h"
#define ALEN(a) (sizeof(a)/sizeof(a[0]))
struct rdata_def {
const char *name;
int type;
};
struct rr_def {
const char *name;
const struct rdata_def *rdata;
int n_rdata_fields;
};
static struct rdata_def a_rdata[] = {
{ "ipv4_address" , t_bindata }};
static struct rdata_def ns_rdata[] = {
{ "nsdname" , t_bindata }};
static struct rdata_def md_rdata[] = {
{ "madname" , t_bindata }};
static struct rdata_def mf_rdata[] = {
{ "madname" , t_bindata }};
static struct rdata_def cname_rdata[] = {
{ "cname" , t_bindata }};
static struct rdata_def soa_rdata[] = {
{ "mname" , t_bindata },
{ "rname" , t_bindata },
{ "serial" , t_int },
{ "refresh" , t_int },
{ "refresh" , t_int },
{ "retry" , t_int },
{ "expire" , t_int }};
static struct rdata_def mb_rdata[] = {
{ "madname" , t_bindata }};
static struct rdata_def mg_rdata[] = {
{ "mgmname" , t_bindata }};
static struct rdata_def mr_rdata[] = {
{ "newname" , t_bindata }};
static struct rdata_def null_rdata[] = {
{ "anything" , t_bindata }};
static struct rdata_def wks_rdata[] = {
{ "address" , t_bindata },
{ "protocol" , t_int },
{ "bitmap" , t_bindata }};
static struct rdata_def ptr_rdata[] = {
{ "ptrdname" , t_bindata }};
static struct rdata_def hinfo_rdata[] = {
{ "cpu" , t_bindata }};
static struct rdata_def minfo_rdata[] = {
{ "rmailbx" , t_bindata }};
static struct rdata_def mx_rdata[] = {
{ "preference" , t_int },
{ "exchange" , t_bindata }};
static struct rdata_def txt_rdata[] = {
{ "txt_strings" , t_list }};
static struct rdata_def rp_rdata[] = {
{ "mbox_dname" , t_bindata }};
static struct rdata_def afsdb_rdata[] = {
{ "subtype" , t_bindata }};
static struct rdata_def x25_rdata[] = {
{ "psdn_address" , t_bindata }};
static struct rdata_def isdn_rdata[] = {
{ "isdn_address" , t_bindata }};
static struct rdata_def rt_rdata[] = {
{ "preference" , t_bindata }};
static struct rdata_def nsap_rdata[] = {
{ "nsap" , t_bindata }};
static struct rdata_def sig_rdata[] = {
{ "sig_obsolete" , t_bindata }};
static struct rdata_def key_rdata[] = {
{ "key_obsolete" , t_bindata }};
static struct rdata_def px_rdata[] = {
{ "preference" , t_int },
{ "map822" , t_bindata },
{ "mapx400" , t_bindata }};
static struct rdata_def gpos_rdata[] = {
{ "longitude" , t_bindata },
{ "latitude" , t_bindata },
{ "altitude" , t_bindata }};
static struct rdata_def aaaa_rdata[] = {
{ "ipv6_address" , t_bindata }};
static struct rdata_def loc_rdata[] = {
{ "loc_obsolete" , t_bindata }};
static struct rdata_def nxt_rdata[] = {
{ "nxt_obsolete" , t_bindata }};
static struct rdata_def eid_rdata[] = {
{ "eid_unknown" , t_bindata }};
static struct rdata_def nimloc_rdata[] = {
{ "nimloc_unknown" , t_bindata }};
static struct rdata_def srv_rdata[] = {
{ "priority" , t_int },
{ "weight" , t_int },
{ "port" , t_int },
{ "target" , t_bindata }};
static struct rdata_def atma_rdata[] = {
{ "format" , t_bindata }};
static struct rdata_def naptr_rdata[] = {
{ "order" , t_int },
{ "preference" , t_int },
{ "flags" , t_bindata },
{ "service" , t_bindata },
{ "regexp" , t_bindata },
{ "replacement" , t_bindata }};
static struct rdata_def kx_rdata[] = {
{ "preference" , t_bindata }};
static struct rdata_def cert_rdata[] = {
{ "type" , t_int },
{ "key_tag" , t_int },
{ "algorithm" , t_int },
{ "certificate_or_crl" , t_bindata }};
static struct rdata_def a6_rdata[] = {
{ "a6_obsolete" , t_bindata }};
static struct rdata_def dname_rdata[] = {
{ "target" , t_bindata }};
static struct rdata_def sink_rdata[] = {
{ "sink_unknown" , t_bindata }};
static struct rdata_def opt_rdata[] = {
{ "options" , t_dict },
{ "option_code" , t_int },
{ "option_data" , t_bindata },
{ "udp_payload_size" , t_int },
{ "extended_rcode" , t_int },
{ "version" , t_int },
{ "do" , t_int },
{ "z" , t_int }};
static struct rdata_def apl_rdata[] = {
{ "apitems" , t_dict },
{ "address_family" , t_int },
{ "prefix" , t_int },
{ "n" , t_int },
{ "afdpart" , t_bindata }};
static struct rdata_def ds_rdata[] = {
{ "key_tag" , t_int },
{ "algorithm" , t_int },
{ "digest_type" , t_int },
{ "digest" , t_bindata }};
static struct rdata_def sshfp_rdata[] = {
{ "algorithm" , t_int },
{ "fp_type" , t_int },
{ "fingerprint" , t_bindata }};
static struct rdata_def ipseckey_rdata[] = {
{ "algorithm" , t_int },
{ "gateway_type" , t_int },
{ "precedence" , t_int },
{ "gateway" , t_bindata },
{ "public_key" , t_bindata }};
static struct rdata_def rrsig_rdata[] = {
{ "type_covered" , t_int },
{ "algorithm" , t_int },
{ "labels" , t_int },
{ "original_ttl" , t_int },
{ "signature_expiration" , t_int },
{ "signature_inception" , t_int },
{ "key_tag" , t_int },
{ "signers_name" , t_bindata },
{ "signature" , t_bindata }};
static struct rdata_def nsec_rdata[] = {
{ "next_domain_name" , t_bindata }};
static struct rdata_def dnskey_rdata[] = {
{ "flags" , t_int },
{ "protocol" , t_int },
{ "algorithm" , t_int },
{ "public_key" , t_bindata }};
static struct rdata_def dhcid_rdata[] = {
{ "dhcid_opaque" , t_bindata }};
static struct rdata_def nsec3_rdata[] = {
{ "hash_algorithm" , t_int },
{ "flags" , t_int },
{ "iterations" , t_int },
{ "salt" , t_bindata },
{ "next_hashed_owner_name" , t_bindata },
{ "type_bit_maps" , t_bindata }};
static struct rdata_def nsec3param_rdata[] = {
{ "hash_algorithm" , t_int },
{ "flags" , t_int },
{ "iterations" , t_int },
{ "salt" , t_bindata }};
static struct rdata_def tlsa_rdata[] = {
{ "certificate_usage" , t_int },
{ "selector" , t_int },
{ "matching_type" , t_int },
{ "certificate_association_data", t_bindata }};
static struct rdata_def hip_rdata[] = {
{ "pk_algorithm" , t_int },
{ "hit" , t_bindata },
{ "public_key" , t_bindata },
{ "rendezvous_servers" , t_list }};
static struct rdata_def ninfo_rdata[] = {
{ "ninfo_unknown" , t_bindata }};
static struct rdata_def rkey_rdata[] = {
{ "rkey_unknown" , t_bindata }};
static struct rdata_def talink_rdata[] = {
{ "talink_unknown" , t_bindata }};
static struct rdata_def cds_rdata[] = {
{ "cds_unknown" , t_bindata }};
static struct rdata_def spf_rdata[] = {
{ "text" , t_bindata }};
static struct rdata_def uinfo_rdata[] = {
{ "uinfo_unknown" , t_bindata }};
static struct rdata_def uid_rdata[] = {
{ "uid_unknown" , t_bindata }};
static struct rdata_def gid_rdata[] = {
{ "gid_unknown" , t_bindata }};
static struct rdata_def unspec_rdata[] = {
{ "unspec_unknown" , t_bindata }};
static struct rdata_def nid_rdata[] = {
{ "preference" , t_int },
{ "node_id" , t_bindata }};
static struct rdata_def l32_rdata[] = {
{ "preference" , t_int },
{ "locator32" , t_bindata }};
static struct rdata_def l64_rdata[] = {
{ "preference" , t_int },
{ "locator64" , t_bindata }};
static struct rdata_def lp_rdata[] = {
{ "preference" , t_int },
{ "fqdn" , t_bindata }};
static struct rdata_def eui48_rdata[] = {
{ "eui48_address" , t_bindata }};
static struct rdata_def eui64_rdata[] = {
{ "eui64_address" , t_bindata }};
static struct rdata_def tkey_rdata[] = {
{ "algorithm" , t_bindata },
{ "inception" , t_int },
{ "expiration" , t_int },
{ "mode" , t_int },
{ "error" , t_int },
{ "key_data" , t_bindata },
{ "other_data" , t_bindata }};
static struct rdata_def tsig_rdata[] = {
{ "algorithm" , t_bindata },
{ "time_signed" , t_bindata },
{ "fudge" , t_int },
{ "mac" , t_bindata },
{ "original_id" , t_int },
{ "error" , t_int },
{ "other_data" , t_bindata }};
static struct rdata_def mailb_rdata[] = {
{ "mailb_unknown" , t_bindata }};
static struct rdata_def maila_rdata[] = {
{ "maila_unknown" , t_bindata }};
static struct rdata_def uri_rdata[] = {
{ "priority" , t_int },
{ "weight" , t_int },
{ "target" , t_bindata }};
static struct rdata_def caa_rdata[] = {
{ "flags" , t_int },
{ "tag" , t_bindata },
{ "value" , t_bindata }};
static struct rdata_def ta_rdata[] = {
{ "ta_unknown" , t_bindata }};
static struct rdata_def dlv_rdata[] = {
{ "key_tag" , t_int },
{ "algorithm" , t_int },
{ "digest_type" , t_int },
{ "digest" , t_bindata }};
static struct rr_def rr_defs[] = {
{ NULL, NULL, 0 },
{ "A", a_rdata, ALEN( a_rdata) }, /* 1 - */
{ "NS", ns_rdata, ALEN( ns_rdata) },
{ "MD", md_rdata, ALEN( md_rdata) },
{ "MF", mf_rdata, ALEN( mf_rdata) },
{ "CNAME", cname_rdata, ALEN( cname_rdata) },
{ "SOA", soa_rdata, ALEN( soa_rdata) },
{ "MB", mb_rdata, ALEN( mb_rdata) },
{ "MG", mg_rdata, ALEN( mg_rdata) },
{ "MR", mr_rdata, ALEN( mr_rdata) },
{ "NULL", null_rdata, ALEN( null_rdata) },
{ "WKS", wks_rdata, ALEN( wks_rdata) },
{ "PTR", ptr_rdata, ALEN( ptr_rdata) },
{ "HINFO", hinfo_rdata, ALEN( hinfo_rdata) },
{ "MINFO", minfo_rdata, ALEN( minfo_rdata) },
{ "MX", mx_rdata, ALEN( mx_rdata) },
{ "TXT", txt_rdata, ALEN( txt_rdata) },
{ "RP", rp_rdata, ALEN( rp_rdata) },
{ "AFSDB", afsdb_rdata, ALEN( afsdb_rdata) },
{ "X25", x25_rdata, ALEN( x25_rdata) },
{ "ISDN", isdn_rdata, ALEN( isdn_rdata) },
{ "RT", rt_rdata, ALEN( rt_rdata) },
{ "NSAP", nsap_rdata, ALEN( nsap_rdata) }, /* - 22 */
{ NULL, NULL, 0 },
{ "SIG", sig_rdata, ALEN( sig_rdata) }, /* 24 - */
{ "KEY", key_rdata, ALEN( key_rdata) },
{ "PX", px_rdata, ALEN( px_rdata) },
{ "GPOS", gpos_rdata, ALEN( gpos_rdata) },
{ "AAAA", aaaa_rdata, ALEN( aaaa_rdata) },
{ "LOC", loc_rdata, ALEN( loc_rdata) },
{ "NXT", nxt_rdata, ALEN( nxt_rdata) },
{ "EID", eid_rdata, ALEN( eid_rdata) },
{ "NIMLOC", nimloc_rdata, ALEN( nimloc_rdata) },
{ "SRV", srv_rdata, ALEN( srv_rdata) },
{ "ATMA", atma_rdata, ALEN( atma_rdata) },
{ "NAPTR", naptr_rdata, ALEN( naptr_rdata) },
{ "KX", kx_rdata, ALEN( kx_rdata) },
{ "CERT", cert_rdata, ALEN( cert_rdata) },
{ "A6", a6_rdata, ALEN( a6_rdata) },
{ "DNAME", dname_rdata, ALEN( dname_rdata) },
{ "SINK", sink_rdata, ALEN( sink_rdata) },
{ "OPT", opt_rdata, ALEN( opt_rdata) },
{ "APL", apl_rdata, ALEN( apl_rdata) },
{ "DS", ds_rdata, ALEN( ds_rdata) },
{ "SSHFP", sshfp_rdata, ALEN( sshfp_rdata) },
{ "IPSECKEY", ipseckey_rdata, ALEN( ipseckey_rdata) },
{ "RRSIG", rrsig_rdata, ALEN( rrsig_rdata) },
{ "NSEC", nsec_rdata, ALEN( nsec_rdata) },
{ "DNSKEY", dnskey_rdata, ALEN( dnskey_rdata) },
{ "DHCID", dhcid_rdata, ALEN( dhcid_rdata) },
{ "NSEC3", nsec3_rdata, ALEN( nsec3_rdata) },
{ "NSEC3PARAM", nsec3param_rdata, ALEN(nsec3param_rdata) },
{ "TLSA", tlsa_rdata, ALEN( tlsa_rdata) }, /* - 52 */
{ NULL, NULL, 0 },
{ NULL, NULL, 0 },
{ "HIP", hip_rdata, ALEN( hip_rdata) }, /* 55 - */
{ "NINFO", ninfo_rdata, ALEN( ninfo_rdata) },
{ "RKEY", rkey_rdata, ALEN( rkey_rdata) },
{ "TALINK", talink_rdata, ALEN( talink_rdata) },
{ "CDS", cds_rdata, ALEN( cds_rdata) }, /* - 59 */
{ NULL, NULL, 0 },
{ NULL, NULL, 0 },
{ NULL, NULL, 0 },
{ NULL, NULL, 0 },
{ NULL, NULL, 0 },
{ NULL, NULL, 0 },
{ NULL, NULL, 0 },
{ NULL, NULL, 0 },
{ NULL, NULL, 0 },
{ NULL, NULL, 0 },
{ NULL, NULL, 0 },
{ NULL, NULL, 0 },
{ NULL, NULL, 0 },
{ NULL, NULL, 0 },
{ NULL, NULL, 0 },
{ NULL, NULL, 0 },
{ NULL, NULL, 0 },
{ NULL, NULL, 0 },
{ NULL, NULL, 0 },
{ NULL, NULL, 0 },
{ NULL, NULL, 0 },
{ NULL, NULL, 0 },
{ NULL, NULL, 0 },
{ NULL, NULL, 0 },
{ NULL, NULL, 0 },
{ NULL, NULL, 0 },
{ NULL, NULL, 0 },
{ NULL, NULL, 0 },
{ NULL, NULL, 0 },
{ NULL, NULL, 0 },
{ NULL, NULL, 0 },
{ NULL, NULL, 0 },
{ NULL, NULL, 0 },
{ NULL, NULL, 0 },
{ NULL, NULL, 0 },
{ NULL, NULL, 0 },
{ NULL, NULL, 0 },
{ NULL, NULL, 0 },
{ NULL, NULL, 0 },
{ "SPF", spf_rdata, ALEN( spf_rdata) }, /* 99 - */
{ "UINFO", uinfo_rdata, ALEN( uinfo_rdata) },
{ "UID", uid_rdata, ALEN( uid_rdata) },
{ "GID", gid_rdata, ALEN( gid_rdata) },
{ "UNSPEC", unspec_rdata, ALEN( unspec_rdata) },
{ "NID", nid_rdata, ALEN( nid_rdata) },
{ "L32", l32_rdata, ALEN( l32_rdata) },
{ "L64", l64_rdata, ALEN( l64_rdata) },
{ "LP", lp_rdata, ALEN( lp_rdata) },
{ "EUI48", eui48_rdata, ALEN( eui48_rdata) },
{ "EUI64", eui64_rdata, ALEN( eui64_rdata) }, /* - 109 */
{ NULL, NULL, 0 },
{ NULL, NULL, 0 },
{ NULL, NULL, 0 },
{ NULL, NULL, 0 },
{ NULL, NULL, 0 },
{ NULL, NULL, 0 },
{ NULL, NULL, 0 },
{ NULL, NULL, 0 },
{ NULL, NULL, 0 },
{ NULL, NULL, 0 },
{ NULL, NULL, 0 },
{ NULL, NULL, 0 },
{ NULL, NULL, 0 },
{ NULL, NULL, 0 },
{ NULL, NULL, 0 },
{ NULL, NULL, 0 },
{ NULL, NULL, 0 },
{ NULL, NULL, 0 },
{ NULL, NULL, 0 },
{ NULL, NULL, 0 },
{ NULL, NULL, 0 },
{ NULL, NULL, 0 },
{ NULL, NULL, 0 },
{ NULL, NULL, 0 },
{ NULL, NULL, 0 },
{ NULL, NULL, 0 },
{ NULL, NULL, 0 },
{ NULL, NULL, 0 },
{ NULL, NULL, 0 },
{ NULL, NULL, 0 },
{ NULL, NULL, 0 },
{ NULL, NULL, 0 },
{ NULL, NULL, 0 },
{ NULL, NULL, 0 },
{ NULL, NULL, 0 },
{ NULL, NULL, 0 },
{ NULL, NULL, 0 },
{ NULL, NULL, 0 },
{ NULL, NULL, 0 },
{ NULL, NULL, 0 },
{ NULL, NULL, 0 },
{ NULL, NULL, 0 },
{ NULL, NULL, 0 },
{ NULL, NULL, 0 },
{ NULL, NULL, 0 },
{ NULL, NULL, 0 },
{ NULL, NULL, 0 },
{ NULL, NULL, 0 },
{ NULL, NULL, 0 },
{ NULL, NULL, 0 },
{ NULL, NULL, 0 },
{ NULL, NULL, 0 },
{ NULL, NULL, 0 },
{ NULL, NULL, 0 },
{ NULL, NULL, 0 },
{ NULL, NULL, 0 },
{ NULL, NULL, 0 },
{ NULL, NULL, 0 },
{ NULL, NULL, 0 },
{ NULL, NULL, 0 },
{ NULL, NULL, 0 },
{ NULL, NULL, 0 },
{ NULL, NULL, 0 },
{ NULL, NULL, 0 },
{ NULL, NULL, 0 },
{ NULL, NULL, 0 },
{ NULL, NULL, 0 },
{ NULL, NULL, 0 },
{ NULL, NULL, 0 },
{ NULL, NULL, 0 },
{ NULL, NULL, 0 },
{ NULL, NULL, 0 },
{ NULL, NULL, 0 },
{ NULL, NULL, 0 },
{ NULL, NULL, 0 },
{ NULL, NULL, 0 },
{ NULL, NULL, 0 },
{ NULL, NULL, 0 },
{ NULL, NULL, 0 },
{ NULL, NULL, 0 },
{ NULL, NULL, 0 },
{ NULL, NULL, 0 },
{ NULL, NULL, 0 },
{ NULL, NULL, 0 },
{ NULL, NULL, 0 },
{ NULL, NULL, 0 },
{ NULL, NULL, 0 },
{ NULL, NULL, 0 },
{ NULL, NULL, 0 },
{ NULL, NULL, 0 },
{ NULL, NULL, 0 },
{ NULL, NULL, 0 },
{ NULL, NULL, 0 },
{ NULL, NULL, 0 },
{ NULL, NULL, 0 },
{ NULL, NULL, 0 },
{ NULL, NULL, 0 },
{ NULL, NULL, 0 },
{ NULL, NULL, 0 },
{ NULL, NULL, 0 },
{ NULL, NULL, 0 },
{ NULL, NULL, 0 },
{ NULL, NULL, 0 },
{ NULL, NULL, 0 },
{ NULL, NULL, 0 },
{ NULL, NULL, 0 },
{ NULL, NULL, 0 },
{ NULL, NULL, 0 },
{ NULL, NULL, 0 },
{ NULL, NULL, 0 },
{ NULL, NULL, 0 },
{ NULL, NULL, 0 },
{ NULL, NULL, 0 },
{ NULL, NULL, 0 },
{ NULL, NULL, 0 },
{ NULL, NULL, 0 },
{ NULL, NULL, 0 },
{ NULL, NULL, 0 },
{ NULL, NULL, 0 },
{ NULL, NULL, 0 },
{ NULL, NULL, 0 },
{ NULL, NULL, 0 },
{ NULL, NULL, 0 },
{ NULL, NULL, 0 },
{ NULL, NULL, 0 },
{ NULL, NULL, 0 },
{ NULL, NULL, 0 },
{ NULL, NULL, 0 },
{ NULL, NULL, 0 },
{ NULL, NULL, 0 },
{ NULL, NULL, 0 },
{ NULL, NULL, 0 },
{ NULL, NULL, 0 },
{ NULL, NULL, 0 },
{ NULL, NULL, 0 },
{ NULL, NULL, 0 },
{ NULL, NULL, 0 },
{ NULL, NULL, 0 },
{ NULL, NULL, 0 },
{ "TKEY", tkey_rdata, ALEN( tkey_rdata) }, /* 249 - */
{ "TSIG", tsig_rdata, ALEN( tsig_rdata) }, /* - 250 */
{ NULL, NULL, 0 },
{ NULL, NULL, 0 },
{ "MAILB", mailb_rdata, ALEN( mailb_rdata) }, /* 253 - */
{ "MAILA", maila_rdata, ALEN( maila_rdata) }, /* - 254 */
{ NULL, NULL, 0 },
{ "URI", uri_rdata, ALEN( uri_rdata) }, /* 256 - */
{ "CAA", caa_rdata, ALEN( caa_rdata) }, /* - 257 */
{ "TA", ta_rdata, ALEN( ta_rdata) }, /* 32768 */
{ "DLV", dlv_rdata, ALEN( dlv_rdata) } /* 32769 */
};
static const struct rr_def *
rr_def_lookup(uint16_t rr_type)
{
if (rr_type <= 257)
return &rr_defs[rr_type];
else if (rr_type == 32768)
return &rr_defs[258];
else if (rr_type == 32769)
return &rr_defs[259];
return rr_defs;
}
const char *
priv_getdns_rr_type_name(int rr_type)
{
return rr_def_lookup(rr_type)->name;
}
/* list of txt records */
static getdns_return_t
priv_getdns_equip_dict_with_txt_rdfs(struct getdns_dict* rdata, ldns_rr* rr,
const struct rr_def* def,
struct getdns_context* context) {
size_t i;
struct getdns_bindata bindata;
uint8_t buffer[LDNS_MAX_RDFLEN];
getdns_return_t r = GETDNS_RETURN_GOOD;
struct getdns_list* records = getdns_list_create_with_context(context);
if (!records) {
return GETDNS_RETURN_MEMORY_ERROR;
}
for (i = 0; i < ldns_rr_rd_count(rr) && r == GETDNS_RETURN_GOOD; ++i) {
ldns_rdf* rdf = ldns_rr_rdf(rr, i);
int rdf_size = (int) ldns_rdf_size(rdf);
uint8_t* rdf_data = ldns_rdf_data(rdf);
if (rdf_size < 1) {
r = GETDNS_RETURN_GENERIC_ERROR;
continue;
}
int txt_size = (int) rdf_data[0];
if (rdf_size < txt_size) {
r = GETDNS_RETURN_GENERIC_ERROR;
continue;
}
bindata.size = txt_size + 1;
memcpy(buffer, rdf_data + 1, txt_size);
buffer[txt_size] = 0;
bindata.data = buffer;
r = getdns_list_set_bindata(records, i, &bindata);
}
if (r == GETDNS_RETURN_GOOD) {
r = getdns_dict_set_list(rdata, def->rdata[0].name, records);
}
getdns_list_destroy(records);
return r;
}
/* heavily borrowed/copied from ldns 1.6.17 */
static
getdns_return_t getdns_rdf_hip_get_alg_hit_pk(ldns_rdf *rdf, uint8_t* alg,
struct getdns_bindata* hit,
struct getdns_bindata* pk)
{
uint8_t *data;
size_t rdf_size;
if ((rdf_size = ldns_rdf_size(rdf)) < 6) {
return GETDNS_RETURN_GENERIC_ERROR;
}
data = ldns_rdf_data(rdf);
hit->size = data[0];
*alg = data[1];
pk->size = ldns_read_uint16(data + 2);
hit->data = data + 4;
pk->data = data + 4 + hit->size;
if (hit->size == 0 || pk->size == 0 ||
rdf_size < (size_t) hit->size + pk->size + 4) {
return GETDNS_RETURN_GENERIC_ERROR;
}
return GETDNS_RETURN_GOOD;
}
static getdns_return_t
priv_getdns_equip_dict_with_hip_rdfs(struct getdns_dict* rdata, ldns_rr* rr,
const struct rr_def* def,
struct getdns_context* context) {
uint8_t alg;
getdns_return_t r;
struct getdns_bindata hit_data;
struct getdns_bindata key_data;
/* first rdf contains the key data */
ldns_rdf* rdf = ldns_rr_rdf(rr, 0);
/* ask LDNS to parse it for us */
r = getdns_rdf_hip_get_alg_hit_pk(rdf, &alg, &hit_data, &key_data);
if (r != GETDNS_RETURN_GOOD) {
return GETDNS_RETURN_GENERIC_ERROR;
}
r = getdns_dict_set_int(rdata, def->rdata[0].name, alg);
r |= getdns_dict_set_bindata(rdata, def->rdata[1].name, &hit_data);
r |= getdns_dict_set_bindata(rdata, def->rdata[2].name, &key_data);
if (r != GETDNS_RETURN_GOOD) {
return GETDNS_RETURN_GENERIC_ERROR;
}
if (ldns_rr_rd_count(rr) > 1) {
/* servers */
size_t i;
struct getdns_bindata server_data;
struct getdns_list* servers = getdns_list_create_with_context(context);
if (!servers) {
return GETDNS_RETURN_MEMORY_ERROR;
}
for (i = 1; i < ldns_rr_rd_count(rr) && r == GETDNS_RETURN_GOOD; ++i) {
ldns_rdf* server_rdf = ldns_rr_rdf(rr, i);
server_data.size = ldns_rdf_size(server_rdf);
server_data.data = ldns_rdf_data(server_rdf);
r = getdns_list_set_bindata(servers, i - 1, &server_data);
}
if (r == GETDNS_RETURN_GOOD) {
r = getdns_dict_set_list(rdata, def->rdata[3].name, servers);
}
/* always clean up */
getdns_list_destroy(servers);
if (r != GETDNS_RETURN_GOOD) {
return GETDNS_RETURN_GENERIC_ERROR;
}
}
return r;
}
static getdns_return_t
priv_append_apl_record(struct getdns_list* records, ldns_rdf* rdf,
const struct rr_def* def, struct getdns_context* context) {
getdns_return_t r = GETDNS_RETURN_GOOD;
uint8_t* data;
size_t size;
uint16_t family;
uint8_t prefix;
uint8_t negation;
size_t addr_len;
size_t pos = 0;
size_t index = 0;
struct getdns_bindata addr_data;
if (ldns_rdf_get_type(rdf) != LDNS_RDF_TYPE_APL) {
return GETDNS_RETURN_GENERIC_ERROR;
}
getdns_list_get_length(records, &index);
data = ldns_rdf_data(rdf);
size = ldns_rdf_size(rdf);
if (size < 4) {
/* not enough for the fam, prefix, n, and data len */
return GETDNS_RETURN_GENERIC_ERROR;
}
while (pos < size && r == GETDNS_RETURN_GOOD) {
struct getdns_dict* apl_dict;
family = ldns_read_uint16(data + pos);
prefix = data[pos + 2];
negation = (data[pos + 3] & 0x80) > 1 ? 1 : 0;
addr_len = data[pos + 3] & 0x7F;
if (size < 4 + addr_len) {
/* not enough.. */
return GETDNS_RETURN_GENERIC_ERROR;
}
addr_data.size = addr_len;
addr_data.data = data + 4 + pos;
/* add to a dictionary */
apl_dict = getdns_dict_create_with_context(context);
if (!apl_dict) {
/* memory fail */
return GETDNS_RETURN_MEMORY_ERROR;
}
r |= getdns_dict_set_int(apl_dict, def->rdata[1].name, family);
r |= getdns_dict_set_int(apl_dict, def->rdata[2].name, prefix);
r |= getdns_dict_set_int(apl_dict, def->rdata[3].name, negation);
r |= getdns_dict_set_bindata(apl_dict, def->rdata[4].name, &addr_data);
if (r == GETDNS_RETURN_GOOD) {
r = getdns_list_set_dict(records, index, apl_dict);
}
pos += addr_data.size + 4;
++index;
/* always clean up */
getdns_dict_destroy(apl_dict);
}
return r;
}
static getdns_return_t
priv_getdns_equip_dict_with_apl_rdfs(struct getdns_dict* rdata, ldns_rr* rr,
const struct rr_def* def,
struct getdns_context* context) {
size_t i;
getdns_return_t r = GETDNS_RETURN_GOOD;
struct getdns_list* records = getdns_list_create_with_context(context);
if (!records) {
return GETDNS_RETURN_MEMORY_ERROR;
}
for (i = 0; i < ldns_rr_rd_count(rr) && r == GETDNS_RETURN_GOOD; ++i) {
r = priv_append_apl_record(records, ldns_rr_rdf(rr, i),
def, context);
}
if (r == GETDNS_RETURN_GOOD) {
getdns_dict_set_list(rdata, def->rdata[0].name, records);
}
getdns_list_destroy(records);
return GETDNS_RETURN_GOOD;
}
static getdns_return_t
priv_getdns_equip_dict_with_spf_rdfs(struct getdns_dict* rdata, ldns_rr* rr,
const struct rr_def* def,
struct getdns_context* context) {
size_t i;
struct getdns_bindata bindata;
getdns_return_t r = GETDNS_RETURN_GOOD;
int num_copied = 0;
bindata.size = 0;
/* one giant bindata */
/* validate and calculate size */
for (i = 0; i < ldns_rr_rd_count(rr) && r == GETDNS_RETURN_GOOD; ++i) {
ldns_rdf* rdf = ldns_rr_rdf(rr, i);
int rdf_size = (int) ldns_rdf_size(rdf);
uint8_t* rdf_data = ldns_rdf_data(rdf);
if (rdf_size < 1) {
r = GETDNS_RETURN_GENERIC_ERROR;
continue;
}
/* txt size without null byte */
int txt_size = (int) rdf_data[0];
if (rdf_size < txt_size) {
r = GETDNS_RETURN_GENERIC_ERROR;
continue;
}
bindata.size += txt_size;
}
/* add one for the null byte */
bindata.size++;
if (r != GETDNS_RETURN_GOOD) {
/* validations failed */
return r;
}
bindata.data = context
? GETDNS_XMALLOC(context->my_mf, uint8_t, bindata.size)
: malloc(bindata.size);
if (!bindata.data) {
return GETDNS_RETURN_MEMORY_ERROR;
}
/* copy in */
for (i = 0; i < ldns_rr_rd_count(rr) && r == GETDNS_RETURN_GOOD; ++i) {
ldns_rdf* rdf = ldns_rr_rdf(rr, i);
/* safe to trust these now */
uint8_t* rdf_data = ldns_rdf_data(rdf);
int txt_size = (int) rdf_data[0];
memcpy(bindata.data + num_copied, rdf_data + 1, txt_size);
num_copied += txt_size;
}
bindata.data[num_copied] = 0;
r = getdns_dict_set_bindata(rdata, def->rdata[0].name, &bindata);
if (context)
GETDNS_FREE(context->my_mf, bindata.data);
else
free(bindata.data);
return r;
}
static getdns_return_t
priv_getdns_equip_dict_with_rdfs(struct getdns_dict *rdata, ldns_rr *rr,
struct getdns_context* context)
{
getdns_return_t r = GETDNS_RETURN_GOOD;
const struct rr_def *def;
struct getdns_bindata bindata;
size_t i;
int intval;
assert(rdata);
assert(rr);
def = rr_def_lookup(ldns_rr_get_type(rr));
/* specialty handlers */
/* TODO: convert generic one into function w/ similar signature and store in the
* def? */
if (def->rdata == txt_rdata) {
return priv_getdns_equip_dict_with_txt_rdfs(rdata, rr, def, context);
} else if (def->rdata == hip_rdata) {
return priv_getdns_equip_dict_with_hip_rdfs(rdata, rr, def, context);
} else if (def->rdata == apl_rdata) {
return priv_getdns_equip_dict_with_apl_rdfs(rdata, rr, def, context);
} else if (def->rdata == spf_rdata) {
return priv_getdns_equip_dict_with_spf_rdfs(rdata, rr, def, context);
}
/* generic */
for (i = 0; i < ldns_rr_rd_count(rr) && r == GETDNS_RETURN_GOOD; i++) {
if (i >= def->n_rdata_fields)
break;
switch (def->rdata[i].type) {
case t_bindata: bindata.size = ldns_rdf_size(ldns_rr_rdf(rr, i));
bindata.data = ldns_rdf_data(ldns_rr_rdf(rr, i));
r = getdns_dict_set_bindata(
rdata, (char *)def->rdata[i].name, &bindata);
break;
case t_int : switch (ldns_rdf_size(ldns_rr_rdf(rr, i))) {
case 1: intval = (uint8_t)*ldns_rdf_data(
ldns_rr_rdf(rr, i));
break;
case 2: intval = ldns_read_uint16(
ldns_rdf_data(ldns_rr_rdf(rr, i)));
break;
case 4: intval = ldns_read_uint32(
ldns_rdf_data(ldns_rr_rdf(rr, i)));
break;
default: intval = -1;
/* TODO Compare with LDNS rdf types */
break;
}
r = getdns_dict_set_int(
rdata, (char *)def->rdata[i].name, intval);
break;
default : break;
}
}
return r;
}
static getdns_return_t
priv_getdns_create_dict_from_rdfs(
struct getdns_context *context, ldns_rr *rr, struct getdns_dict** rdata)
{
getdns_return_t r = GETDNS_RETURN_GOOD;
struct getdns_bindata rdata_raw;
uint8_t *data_ptr;
size_t i;
assert(rr);
assert(rdata);
*rdata = getdns_dict_create_with_context(context);
if (! *rdata)
return GETDNS_RETURN_MEMORY_ERROR;
do { /* break on error (to cleanup *rdata) */
/* Count and reserve "raw" rdata space */
rdata_raw.size = 0;
for (i = 0; i < ldns_rr_rd_count(rr); i++)
rdata_raw.size += ldns_rdf_size(ldns_rr_rdf(rr, i));
rdata_raw.data = context
? GETDNS_XMALLOC(context->mf, uint8_t, rdata_raw.size)
: malloc(rdata_raw.size);
if (! rdata_raw.data) {
r = GETDNS_RETURN_MEMORY_ERROR;
break;
}
/* Copy rdata fields to rdata space */
data_ptr = rdata_raw.data;
for (i = 0; i < ldns_rr_rd_count(rr); i++) {
(void) memcpy(data_ptr,
ldns_rdf_data(ldns_rr_rdf(rr, i)),
ldns_rdf_size(ldns_rr_rdf(rr, i)));
data_ptr += ldns_rdf_size(ldns_rr_rdf(rr, i));
}
/* Set "rdata_raw" attribute" */
r = getdns_dict_set_bindata(*rdata, "rdata_raw", &rdata_raw);
if (context)
GETDNS_FREE(context->mf, rdata_raw.data);
else
free(rdata_raw.data);
if (r != GETDNS_RETURN_GOOD)
break;
/* Now set the RR type specific attributes */
r = priv_getdns_equip_dict_with_rdfs(*rdata, rr, context);
if (r == GETDNS_RETURN_GOOD)
return r;
} while(0);
getdns_dict_destroy(*rdata);
return r;
}
getdns_return_t
priv_getdns_create_dict_from_rr(
struct getdns_context *context, ldns_rr *rr, struct getdns_dict** rr_dict)
{
getdns_return_t r = GETDNS_RETURN_GOOD;
struct getdns_bindata name;
struct getdns_dict *rdata;
assert(rr);
assert(rr_dict);
*rr_dict = getdns_dict_create_with_context(context);
if (! *rr_dict)
return GETDNS_RETURN_MEMORY_ERROR;
do { /* break on error (to cleanup *rr_dict) */
r = getdns_dict_set_int(*rr_dict,
"type", ldns_rr_get_type(rr));
if (r != GETDNS_RETURN_GOOD)
break;
r = getdns_dict_set_int(*rr_dict,
"class", ldns_rr_get_class(rr));
if (r != GETDNS_RETURN_GOOD)
break;
r = getdns_dict_set_int(*rr_dict, "ttl", ldns_rr_ttl(rr));
if (r != GETDNS_RETURN_GOOD)
break;
/* "name" attribute.
* ldns_rr_owner(rr) is already uncompressed!
*/
name.size = ldns_rdf_size(ldns_rr_owner(rr));
name.data = ldns_rdf_data(ldns_rr_owner(rr));
r = getdns_dict_set_bindata(*rr_dict, "name", &name);
if (r != GETDNS_RETURN_GOOD)
break;
/* The "rdata" dict... copies of copies of copies :( */
r = priv_getdns_create_dict_from_rdfs(context, rr, &rdata);
if (r != GETDNS_RETURN_GOOD)
break;
r = getdns_dict_set_dict(*rr_dict, "rdata", rdata);
getdns_dict_destroy(rdata);
if (r == GETDNS_RETURN_GOOD)
return r;
} while (0);
getdns_dict_destroy(*rr_dict);
return r;
}
getdns_return_t