mirror of
https://gitlab.isc.org/isc-projects/bind9
synced 2025-08-23 10:39:16 +00:00
154 lines
3.4 KiB
C
154 lines
3.4 KiB
C
/*
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* Copyright (C) 1999, 2000 Internet Software Consortium.
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*
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* Permission to use, copy, modify, and distribute this software for any
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* purpose with or without fee is hereby granted, provided that the above
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* copyright notice and this permission notice appear in all copies.
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*
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* THE SOFTWARE IS PROVIDED "AS IS" AND INTERNET SOFTWARE CONSORTIUM
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* DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL
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* INTERNET SOFTWARE CONSORTIUM BE LIABLE FOR ANY SPECIAL, DIRECT,
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* INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING
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* FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT,
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* NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION
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* WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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*/
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/* $Id: rdatalist.c,v 1.23 2000/08/21 22:17:14 bwelling Exp $ */
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#include <config.h>
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#include <stddef.h>
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#include <isc/util.h>
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#include <dns/rdata.h>
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#include <dns/rdatalist.h>
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#include <dns/rdataset.h>
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#include "rdatalist_p.h"
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static dns_rdatasetmethods_t methods = {
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isc__rdatalist_disassociate,
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isc__rdatalist_first,
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isc__rdatalist_next,
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isc__rdatalist_current,
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isc__rdatalist_clone,
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isc__rdatalist_count
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};
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void
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dns_rdatalist_init(dns_rdatalist_t *rdatalist) {
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/*
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* Initialize rdatalist.
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*/
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rdatalist->rdclass = 0;
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rdatalist->type = 0;
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rdatalist->covers = 0;
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rdatalist->ttl = 0;
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ISC_LIST_INIT(rdatalist->rdata);
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ISC_LINK_INIT(rdatalist, link);
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}
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isc_result_t
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dns_rdatalist_tordataset(dns_rdatalist_t *rdatalist,
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dns_rdataset_t *rdataset) {
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/*
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* Make 'rdataset' refer to the rdata in 'rdatalist'.
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*/
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REQUIRE(rdatalist != NULL);
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REQUIRE(DNS_RDATASET_VALID(rdataset));
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REQUIRE(! dns_rdataset_isassociated(rdataset));
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rdataset->methods = &methods;
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rdataset->rdclass = rdatalist->rdclass;
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rdataset->type = rdatalist->type;
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rdataset->covers = rdatalist->covers;
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rdataset->ttl = rdatalist->ttl;
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rdataset->trust = 0;
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rdataset->private1 = rdatalist;
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rdataset->private2 = NULL;
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rdataset->private3 = NULL;
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rdataset->private4 = NULL;
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rdataset->private5 = NULL;
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return (ISC_R_SUCCESS);
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}
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void
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isc__rdatalist_disassociate(dns_rdataset_t *rdataset) {
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UNUSED(rdataset);
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}
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isc_result_t
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isc__rdatalist_first(dns_rdataset_t *rdataset) {
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dns_rdatalist_t *rdatalist;
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rdatalist = rdataset->private1;
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rdataset->private2 = ISC_LIST_HEAD(rdatalist->rdata);
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if (rdataset->private2 == NULL)
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return (ISC_R_NOMORE);
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return (ISC_R_SUCCESS);
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}
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isc_result_t
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isc__rdatalist_next(dns_rdataset_t *rdataset) {
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dns_rdata_t *rdata;
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rdata = rdataset->private2;
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if (rdata == NULL)
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return (ISC_R_NOMORE);
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rdataset->private2 = ISC_LIST_NEXT(rdata, link);
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if (rdataset->private2 == NULL)
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return (ISC_R_NOMORE);
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return (ISC_R_SUCCESS);
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}
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void
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isc__rdatalist_current(dns_rdataset_t *rdataset, dns_rdata_t *rdata) {
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dns_rdata_t *list_rdata;
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list_rdata = rdataset->private2;
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INSIST(list_rdata != NULL);
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*rdata = *list_rdata;
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ISC_LINK_INIT(rdata, link);
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}
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void
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isc__rdatalist_clone(dns_rdataset_t *source, dns_rdataset_t *target) {
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*target = *source;
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/*
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* Reset iterator state.
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*/
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target->private2 = NULL;
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}
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unsigned int
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isc__rdatalist_count(dns_rdataset_t *rdataset) {
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dns_rdatalist_t *rdatalist;
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dns_rdata_t *rdata;
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unsigned int count;
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rdatalist = rdataset->private1;
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count = 0;
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for (rdata = ISC_LIST_HEAD(rdatalist->rdata);
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rdata != NULL;
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rdata = ISC_LIST_NEXT(rdata, link))
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count++;
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return (count);
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}
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