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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: ipseckey_45.c,v 1.12 2020/02/26 18:47:59 florian Exp $ */
#ifndef RDATA_GENERIC_IPSECKEY_45_C
#define RDATA_GENERIC_IPSECKEY_45_C
#include <string.h>
#include <isc/net.h>
static inline isc_result_t
totext_ipseckey(ARGS_TOTEXT) {
isc_region_t region;
dns_name_t name;
char buf[sizeof("255 ")];
unsigned short num;
unsigned short gateway;
REQUIRE(rdata->type == dns_rdatatype_ipseckey);
REQUIRE(rdata->length >= 3);
dns_name_init(&name, NULL);
if (rdata->data[1] > 3U)
return (ISC_R_NOTIMPLEMENTED);
if ((tctx->flags & DNS_STYLEFLAG_MULTILINE) != 0)
RETERR(isc_str_tobuffer("( ", target));
/*
* Precedence.
*/
dns_rdata_toregion(rdata, ®ion);
num = uint8_fromregion(®ion);
isc_region_consume(®ion, 1);
snprintf(buf, sizeof(buf), "%u ", num);
RETERR(isc_str_tobuffer(buf, target));
/*
* Gateway type.
*/
gateway = uint8_fromregion(®ion);
isc_region_consume(®ion, 1);
snprintf(buf, sizeof(buf), "%u ", gateway);
RETERR(isc_str_tobuffer(buf, target));
/*
* Algorithm.
*/
num = uint8_fromregion(®ion);
isc_region_consume(®ion, 1);
snprintf(buf, sizeof(buf), "%u ", num);
RETERR(isc_str_tobuffer(buf, target));
/*
* Gateway.
*/
switch (gateway) {
case 0:
RETERR(isc_str_tobuffer(".", target));
break;
case 1:
RETERR(inet_totext(AF_INET, ®ion, target));
isc_region_consume(®ion, 4);
break;
case 2:
RETERR(inet_totext(AF_INET6, ®ion, target));
isc_region_consume(®ion, 16);
break;
case 3:
dns_name_fromregion(&name, ®ion);
RETERR(dns_name_totext(&name, ISC_FALSE, target));
isc_region_consume(®ion, name_length(&name));
break;
}
/*
* Key.
*/
if (region.length > 0U) {
RETERR(isc_str_tobuffer(tctx->linebreak, target));
if (tctx->width == 0) /* No splitting */
RETERR(isc_base64_totext(®ion, 60, "", target));
else
RETERR(isc_base64_totext(®ion, tctx->width - 2,
tctx->linebreak, target));
}
if ((tctx->flags & DNS_STYLEFLAG_MULTILINE) != 0)
RETERR(isc_str_tobuffer(" )", target));
return (ISC_R_SUCCESS);
}
static inline isc_result_t
fromwire_ipseckey(ARGS_FROMWIRE) {
dns_name_t name;
isc_region_t region;
REQUIRE(type == dns_rdatatype_ipseckey);
UNUSED(type);
UNUSED(rdclass);
dns_decompress_setmethods(dctx, DNS_COMPRESS_NONE);
dns_name_init(&name, NULL);
isc_buffer_activeregion(source, ®ion);
if (region.length < 3)
return (ISC_R_UNEXPECTEDEND);
switch (region.base[1]) {
case 0:
isc_buffer_forward(source, region.length);
return (isc_mem_tobuffer(target, region.base, region.length));
case 1:
if (region.length < 7)
return (ISC_R_UNEXPECTEDEND);
isc_buffer_forward(source, region.length);
return (isc_mem_tobuffer(target, region.base, region.length));
case 2:
if (region.length < 19)
return (ISC_R_UNEXPECTEDEND);
isc_buffer_forward(source, region.length);
return (isc_mem_tobuffer(target, region.base, region.length));
case 3:
RETERR(isc_mem_tobuffer(target, region.base, 3));
isc_buffer_forward(source, 3);
RETERR(dns_name_fromwire(&name, source, dctx, options, target));
isc_buffer_activeregion(source, ®ion);
isc_buffer_forward(source, region.length);
return(isc_mem_tobuffer(target, region.base, region.length));
default:
return (ISC_R_NOTIMPLEMENTED);
}
}
static inline isc_result_t
towire_ipseckey(ARGS_TOWIRE) {
isc_region_t region;
REQUIRE(rdata->type == dns_rdatatype_ipseckey);
REQUIRE(rdata->length != 0);
UNUSED(cctx);
dns_rdata_toregion(rdata, ®ion);
return (isc_mem_tobuffer(target, region.base, region.length));
}
#endif /* RDATA_GENERIC_IPSECKEY_45_C */
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