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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.

(cherry picked from commit 6e1311c624d15e6c4d0184deea3bb670e8a5785d)
This commit is contained in:
Mark Andrews 2025-07-26 06:17:20 +02:00
parent 9a046cbed5
commit ce6078d2b9
4 changed files with 73 additions and 1 deletions
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3
lib/dns/Makefile.am
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@ -67,9 +67,10 @@ libdns_la_HEADERS = \
include/dns/dns64.h \
include/dns/dnsrps.h \
include/dns/dnssec.h \
include/dns/dnstap.h \
include/dns/ds.h \
include/dns/dsdigest.h \
include/dns/dnstap.h \
include/dns/dsync.h \
include/dns/dyndb.h \
include/dns/ecs.h \
include/dns/ede.h \

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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@ -80,6 +80,7 @@ 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;

43
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>
@ -47,6 +48,10 @@
#define TOTEXTONLY 0x01
/* clang-format off */
#define SENTINEL { 0, NULL, 0 }
/* clang-format on */
#define RCODENAMES \
/* standard rcodes */ \
{ dns_rcode_noerror, "NOERROR", 0 }, \
@ -130,6 +135,8 @@
{ DNS_DSDIGEST_SHA384, "SHA-384", 0 }, \
{ DNS_DSDIGEST_SHA384, "SHA384", 0 }, { 0, NULL, 0 }
#define DSYNCSCHEMES { DNS_DSYNCSCHEME_NOTIFY, "NOTIFY", 0 }, SENTINEL
struct tbl {
unsigned int value;
const char *name;
@ -143,6 +150,7 @@ 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 keyflag {
const char *name;
@ -450,6 +458,41 @@ 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?