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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: a_1.c,v 1.12 2020/09/14 08:39:12 florian Exp $ */
/* by Bjorn.Victor@it.uu.se, 2005-05-07 */
/* Based on generic/soa_6.c and generic/mx_15.c */
#ifndef RDATA_CH_3_A_1_C
#define RDATA_CH_3_A_1_C
static inline isc_result_t
totext_ch_a(ARGS_TOTEXT) {
isc_region_t region;
dns_name_t name;
dns_name_t prefix;
isc_boolean_t sub;
char buf[sizeof("0177777")];
uint16_t addr;
REQUIRE(rdata->type == dns_rdatatype_a);
REQUIRE(rdata->rdclass == dns_rdataclass_ch); /* 3 */
REQUIRE(rdata->length != 0);
dns_name_init(&name, NULL);
dns_name_init(&prefix, NULL);
dns_rdata_toregion(rdata, ®ion);
dns_name_fromregion(&name, ®ion);
isc_region_consume(®ion, name_length(&name));
addr = uint16_fromregion(®ion);
sub = name_prefix(&name, tctx->origin, &prefix);
RETERR(dns_name_totext(&prefix, sub, target));
snprintf(buf, sizeof(buf), "%o", addr); /* note octal */
RETERR(isc_str_tobuffer(" ", target));
return (isc_str_tobuffer(buf, target));
}
static inline isc_result_t
fromwire_ch_a(ARGS_FROMWIRE) {
isc_region_t sregion;
isc_region_t tregion;
dns_name_t name;
REQUIRE(type == dns_rdatatype_a);
REQUIRE(rdclass == dns_rdataclass_ch);
UNUSED(type);
UNUSED(rdclass);
dns_decompress_setmethods(dctx, DNS_COMPRESS_GLOBAL14);
dns_name_init(&name, NULL);
RETERR(dns_name_fromwire(&name, source, dctx, options, target));
isc_buffer_activeregion(source, &sregion);
isc_buffer_availableregion(target, &tregion);
if (sregion.length < 2)
return (ISC_R_UNEXPECTEDEND);
if (tregion.length < 2)
return (ISC_R_NOSPACE);
memmove(tregion.base, sregion.base, 2);
isc_buffer_forward(source, 2);
isc_buffer_add(target, 2);
return (ISC_R_SUCCESS);
}
static inline isc_result_t
towire_ch_a(ARGS_TOWIRE) {
dns_name_t name;
dns_offsets_t offsets;
isc_region_t sregion;
isc_region_t tregion;
REQUIRE(rdata->type == dns_rdatatype_a);
REQUIRE(rdata->rdclass == dns_rdataclass_ch);
REQUIRE(rdata->length != 0);
dns_compress_setmethods(cctx, DNS_COMPRESS_GLOBAL14);
dns_name_init(&name, offsets);
dns_rdata_toregion(rdata, &sregion);
dns_name_fromregion(&name, &sregion);
isc_region_consume(&sregion, name_length(&name));
RETERR(dns_name_towire(&name, cctx, target));
isc_buffer_availableregion(target, &tregion);
if (tregion.length < 2)
return (ISC_R_NOSPACE);
memmove(tregion.base, sregion.base, 2);
isc_buffer_add(target, 2);
return (ISC_R_SUCCESS);
}
#endif /* RDATA_CH_3_A_1_C */
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