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Add support for parsing DSYNC scheme mnemonics

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Adds dns_dsyncscheme_fromtext, dns_dsyncscheme_totext and
dns_dsyncscheme_format.  Adds type dns_dsyncscheme_t.
This commit is contained in:
Mark Andrews 2025-07-26 06:17:20 +02:00
parent 09efe6039c
commit 6e1311c624
3 changed files with 67 additions and 0 deletions
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27
lib/dns/include/dns/dsync.h Normal file
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@ -0,0 +1,27 @@
/*
* Copyright (C) Internet Systems Consortium, Inc. ("ISC")
*
* SPDX-License-Identifier: MPL-2.0
*
* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, you can obtain one at https://mozilla.org/MPL/2.0/.
*
* See the COPYRIGHT file distributed with this work for additional
* information regarding copyright ownership.
*/
#pragma once
#define DNS_DSYNCSCHEME_NOTIFY (1)
#define DNS_DSYNCSCHEMEFORMAT_SIZE (7)
isc_result_t
dns_dsyncscheme_fromtext(dns_dsyncscheme_t *schemep, isc_textregion_t *source);
isc_result_t
dns_dsyncscheme_totext(dns_dsyncscheme_t scheme, isc_buffer_t *target);
void
dns_dsyncscheme_format(dns_dsyncscheme_t scheme, char *cp, unsigned int size);

1
lib/dns/include/dns/types.h
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@ -81,6 +81,7 @@ typedef ISC_LIST(dns_dns64_t) dns_dns64list_t;
typedef struct dns_dnsseckey dns_dnsseckey_t;
typedef ISC_LIST(dns_dnsseckey_t) dns_dnsseckeylist_t;
typedef uint8_t dns_dsdigest_t;
typedef uint8_t dns_dsyncscheme_t;
typedef struct dns_dtdata dns_dtdata_t;
typedef struct dns_dtenv dns_dtenv_t;
typedef struct dns_dtmsg dns_dtmsg_t;

39
lib/dns/rcode.c
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@ -29,6 +29,7 @@
#include <dns/cert.h>
#include <dns/ds.h>
#include <dns/dsdigest.h>
#include <dns/dsync.h>
#include <dns/keyflags.h>
#include <dns/keyvalues.h>
#include <dns/rcode.h>
@ -166,6 +167,8 @@
{ DNS_DSDIGEST_GOST2012, "GOST2012", 0 }, \
DSDIGESTPRIVATENAMES SENTINEL
#define DSYNCSCHEMES { DNS_DSYNCSCHEME_NOTIFY, "NOTIFY", 0 }, SENTINEL
struct tbl {
unsigned int value;
const char *name;
@ -179,6 +182,7 @@ static struct tbl secalgs[] = { SECALGNAMES };
static struct tbl secprotos[] = { SECPROTONAMES };
static struct tbl hashalgs[] = { HASHALGNAMES };
static struct tbl dsdigests[] = { DSDIGESTNAMES };
static struct tbl dsyncschemes[] = { DSYNCSCHEMES };
static struct tbl privatednss[] = { PRIVATEDNSS SENTINEL };
static struct tbl privateoids[] = { PRIVATEOIDS SENTINEL };
static struct tbl dstalgorithms[] = { PRIVATEDNSS PRIVATEOIDS SECALGNAMES };
@ -547,6 +551,41 @@ dns_dsdigest_format(dns_dsdigest_t typ, char *cp, unsigned int size) {
}
}
/*
* DSYNC Scheme
*/
isc_result_t
dns_dsyncscheme_fromtext(dns_dsyncscheme_t *schemep, isc_textregion_t *source) {
unsigned int value;
REQUIRE(schemep != NULL);
RETERR(dns_mnemonic_fromtext(&value, source, dsyncschemes, 0xff));
*schemep = value;
return ISC_R_SUCCESS;
}
isc_result_t
dns_dsyncscheme_totext(dns_dsyncscheme_t scheme, isc_buffer_t *target) {
return dns_mnemonic_totext(scheme, target, dsyncschemes);
}
void
dns_dsyncscheme_format(dns_dsyncscheme_t scheme, char *cp, unsigned int size) {
isc_buffer_t b;
isc_region_t r;
isc_result_t result;
REQUIRE(cp != NULL && size > 0);
isc_buffer_init(&b, cp, size - 1);
result = dns_dsyncscheme_totext(scheme, &b);
isc_buffer_usedregion(&b, &r);
r.base[r.length] = 0;
if (result != ISC_R_SUCCESS) {
r.base[0] = 0;
}
}
/*
* This uses lots of hard coded values, but how often do we actually
* add classes?