2 * Copyright (C) 2004, 2005, 2007, 2008, 2010 Internet Systems Consortium, Inc. ("ISC")
3 * Copyright (C) 1999-2001, 2003 Internet Software Consortium.
5 * Permission to use, copy, modify, and/or distribute this software for any
6 * purpose with or without fee is hereby granted, provided that the above
7 * copyright notice and this permission notice appear in all copies.
9 * THE SOFTWARE IS PROVIDED "AS IS" AND ISC DISCLAIMS ALL WARRANTIES WITH
10 * REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY
11 * AND FITNESS. IN NO EVENT SHALL ISC BE LIABLE FOR ANY SPECIAL, DIRECT,
12 * INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM
13 * LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE
14 * OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
15 * PERFORMANCE OF THIS SOFTWARE.
18 /* $Id: rdatalist.c,v 1.33.128.2.28.2 2010/02/25 10:56:01 tbox Exp $ */
29 #include <dns/rdata.h>
30 #include <dns/rdatalist.h>
31 #include <dns/rdataset.h>
33 #include "rdatalist_p.h"
35 static dns_rdatasetmethods_t methods = {
36 isc__rdatalist_disassociate,
39 isc__rdatalist_current,
42 isc__rdatalist_addnoqname,
43 isc__rdatalist_getnoqname,
52 dns_rdatalist_init(dns_rdatalist_t *rdatalist) {
55 * Initialize rdatalist.
58 rdatalist->rdclass = 0;
60 rdatalist->covers = 0;
62 ISC_LIST_INIT(rdatalist->rdata);
63 ISC_LINK_INIT(rdatalist, link);
67 dns_rdatalist_tordataset(dns_rdatalist_t *rdatalist,
68 dns_rdataset_t *rdataset) {
71 * Make 'rdataset' refer to the rdata in 'rdatalist'.
74 REQUIRE(rdatalist != NULL);
75 REQUIRE(DNS_RDATASET_VALID(rdataset));
76 REQUIRE(! dns_rdataset_isassociated(rdataset));
78 rdataset->methods = &methods;
79 rdataset->rdclass = rdatalist->rdclass;
80 rdataset->type = rdatalist->type;
81 rdataset->covers = rdatalist->covers;
82 rdataset->ttl = rdatalist->ttl;
84 rdataset->private1 = rdatalist;
85 rdataset->private2 = NULL;
86 rdataset->private3 = NULL;
87 rdataset->privateuint4 = 0;
88 rdataset->private5 = NULL;
90 return (ISC_R_SUCCESS);
94 dns_rdatalist_fromrdataset(dns_rdataset_t *rdataset,
95 dns_rdatalist_t **rdatalist)
97 REQUIRE(rdatalist != NULL && rdataset != NULL);
98 *rdatalist = rdataset->private1;
100 return (ISC_R_SUCCESS);
104 isc__rdatalist_disassociate(dns_rdataset_t *rdataset) {
109 isc__rdatalist_first(dns_rdataset_t *rdataset) {
110 dns_rdatalist_t *rdatalist;
112 rdatalist = rdataset->private1;
113 rdataset->private2 = ISC_LIST_HEAD(rdatalist->rdata);
115 if (rdataset->private2 == NULL)
116 return (ISC_R_NOMORE);
118 return (ISC_R_SUCCESS);
122 isc__rdatalist_next(dns_rdataset_t *rdataset) {
125 rdata = rdataset->private2;
127 return (ISC_R_NOMORE);
129 rdataset->private2 = ISC_LIST_NEXT(rdata, link);
131 if (rdataset->private2 == NULL)
132 return (ISC_R_NOMORE);
134 return (ISC_R_SUCCESS);
138 isc__rdatalist_current(dns_rdataset_t *rdataset, dns_rdata_t *rdata) {
139 dns_rdata_t *list_rdata;
141 list_rdata = rdataset->private2;
142 INSIST(list_rdata != NULL);
144 dns_rdata_clone(list_rdata, rdata);
148 isc__rdatalist_clone(dns_rdataset_t *source, dns_rdataset_t *target) {
152 * Reset iterator state.
154 target->private2 = NULL;
158 isc__rdatalist_count(dns_rdataset_t *rdataset) {
159 dns_rdatalist_t *rdatalist;
163 rdatalist = rdataset->private1;
166 for (rdata = ISC_LIST_HEAD(rdatalist->rdata);
168 rdata = ISC_LIST_NEXT(rdata, link))
175 isc__rdatalist_addnoqname(dns_rdataset_t *rdataset, dns_name_t *name) {
176 dns_rdataset_t *nsec = NULL;
177 dns_rdataset_t *nsecsig = NULL;
178 dns_rdataset_t *rdset;
181 for (rdset = ISC_LIST_HEAD(name->list);
183 rdset = ISC_LIST_NEXT(rdset, link))
185 if (rdset->rdclass != rdataset->rdclass)
187 if (rdset->type == dns_rdatatype_nsec)
189 if (rdset->type == dns_rdatatype_rrsig &&
190 rdset->covers == dns_rdatatype_nsec)
194 if (nsec == NULL || nsecsig == NULL)
195 return (ISC_R_NOTFOUND);
202 if (nsecsig->ttl < ttl)
204 rdataset->ttl = nsec->ttl = nsecsig->ttl = ttl;
205 rdataset->attributes |= DNS_RDATASETATTR_NOQNAME;
206 rdataset->private6 = name;
207 return (ISC_R_SUCCESS);
211 isc__rdatalist_getnoqname(dns_rdataset_t *rdataset, dns_name_t *name,
212 dns_rdataset_t *nsec, dns_rdataset_t *nsecsig)
214 dns_rdataclass_t rdclass = rdataset->rdclass;
215 dns_rdataset_t *tnsec = NULL;
216 dns_rdataset_t *tnsecsig = NULL;
217 dns_name_t *noqname = rdataset->private6;
219 REQUIRE((rdataset->attributes & DNS_RDATASETATTR_NOQNAME) != 0);
220 (void)dns_name_dynamic(noqname); /* Sanity Check. */
222 for (rdataset = ISC_LIST_HEAD(noqname->list);
224 rdataset = ISC_LIST_NEXT(rdataset, link))
226 if (rdataset->rdclass != rdclass)
228 if (rdataset->type == dns_rdatatype_nsec)
230 if (rdataset->type == dns_rdatatype_rrsig &&
231 rdataset->covers == dns_rdatatype_nsec)
234 if (tnsec == NULL || tnsecsig == NULL)
235 return (ISC_R_NOTFOUND);
237 dns_name_clone(noqname, name);
238 dns_rdataset_clone(tnsec, nsec);
239 dns_rdataset_clone(tnsecsig, nsecsig);
240 return (ISC_R_SUCCESS);