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/*
* Copyright (C) Internet Systems Consortium, Inc. ("ISC")
*
* Permission to use, copy, modify, and/or distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND ISC DISCLAIMS ALL WARRANTIES WITH
* REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY
* AND FITNESS. IN NO EVENT SHALL ISC BE LIABLE FOR ANY SPECIAL, DIRECT,
* INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM
* LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE
* OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
* PERFORMANCE OF THIS SOFTWARE.
*/
/* $Id: mx_15.c,v 1.7 2020/02/24 17:44:45 florian Exp $ */
/* reviewed: Wed Mar 15 18:05:46 PST 2000 by brister */
#ifndef RDATA_GENERIC_MX_15_C
#define RDATA_GENERIC_MX_15_C
#include <string.h>
#include <isc/net.h>
#define RRTYPE_MX_ATTRIBUTES (0)
static inline isc_result_t
totext_mx(ARGS_TOTEXT) {
isc_region_t region;
dns_name_t name;
dns_name_t prefix;
isc_boolean_t sub;
char buf[sizeof("64000")];
unsigned short num;
REQUIRE(rdata->type == dns_rdatatype_mx);
REQUIRE(rdata->length != 0);
dns_name_init(&name, NULL);
dns_name_init(&prefix, NULL);
dns_rdata_toregion(rdata, ®ion);
num = uint16_fromregion(®ion);
isc_region_consume(®ion, 2);
snprintf(buf, sizeof(buf), "%u", num);
RETERR(str_totext(buf, target));
RETERR(str_totext(" ", target));
dns_name_fromregion(&name, ®ion);
sub = name_prefix(&name, tctx->origin, &prefix);
return (dns_name_totext(&prefix, sub, target));
}
static inline isc_result_t
fromwire_mx(ARGS_FROMWIRE) {
dns_name_t name;
isc_region_t sregion;
REQUIRE(type == dns_rdatatype_mx);
UNUSED(type);
UNUSED(rdclass);
dns_decompress_setmethods(dctx, DNS_COMPRESS_GLOBAL14);
dns_name_init(&name, NULL);
isc_buffer_activeregion(source, &sregion);
if (sregion.length < 2)
return (ISC_R_UNEXPECTEDEND);
RETERR(mem_tobuffer(target, sregion.base, 2));
isc_buffer_forward(source, 2);
return (dns_name_fromwire(&name, source, dctx, options, target));
}
static inline isc_result_t
towire_mx(ARGS_TOWIRE) {
dns_name_t name;
dns_offsets_t offsets;
isc_region_t region;
REQUIRE(rdata->type == dns_rdatatype_mx);
REQUIRE(rdata->length != 0);
dns_compress_setmethods(cctx, DNS_COMPRESS_GLOBAL14);
dns_rdata_toregion(rdata, ®ion);
RETERR(mem_tobuffer(target, region.base, 2));
isc_region_consume(®ion, 2);
dns_name_init(&name, offsets);
dns_name_fromregion(&name, ®ion);
return (dns_name_towire(&name, cctx, target));
}
static inline isc_result_t
tostruct_mx(ARGS_TOSTRUCT) {
isc_region_t region;
dns_rdata_mx_t *mx = target;
dns_name_t name;
REQUIRE(rdata->type == dns_rdatatype_mx);
REQUIRE(target != NULL);
REQUIRE(rdata->length != 0);
mx->common.rdclass = rdata->rdclass;
mx->common.rdtype = rdata->type;
ISC_LINK_INIT(&mx->common, link);
dns_name_init(&name, NULL);
dns_rdata_toregion(rdata, ®ion);
mx->pref = uint16_fromregion(®ion);
isc_region_consume(®ion, 2);
dns_name_fromregion(&name, ®ion);
dns_name_init(&mx->mx, NULL);
RETERR(name_duporclone(&name, &mx->mx));
return (ISC_R_SUCCESS);
}
#endif /* RDATA_GENERIC_MX_15_C */
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