contrib/bind9/lib/dns/rdata/generic/dname_39.c

   1 /*
   2  * Copyright (C) 2004, 2007, 2009, 2015  Internet Systems Consortium, Inc. ("ISC")
   3  * Copyright (C) 1999-2001  Internet Software Consortium.
   4  *
   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.
   8  *
   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.
  16  */
  17
  18 /* $Id: dname_39.c,v 1.40 2009/12/04 22:06:37 tbox Exp $ */
  19
  20 /* Reviewed: Wed Mar 15 16:52:38 PST 2000 by explorer */
  21
  22 /* RFC2672 */
  23
  24 #ifndef RDATA_GENERIC_DNAME_39_C
  25 #define RDATA_GENERIC_DNAME_39_C
  26
  27 #define RRTYPE_DNAME_ATTRIBUTES (DNS_RDATATYPEATTR_SINGLETON)
  28
  29 static inline isc_result_t
  30 fromtext_dname(ARGS_FROMTEXT) {
  31         isc_token_t token;
  32         dns_name_t name;
  33         isc_buffer_t buffer;
  34
  35         REQUIRE(type == dns_rdatatype_dname);
  36
  37         UNUSED(type);
  38         UNUSED(rdclass);
  39         UNUSED(callbacks);
  40
  41         RETERR(isc_lex_getmastertoken(lexer, &token, isc_tokentype_string,
  42                                       ISC_FALSE));
  43
  44         dns_name_init(&name, NULL);
  45         buffer_fromregion(&buffer, &token.value.as_region);
  46         if (origin == NULL)
  47                 origin = dns_rootname;
  48         RETTOK(dns_name_fromtext(&name, &buffer, origin, options, target));
  49         return (ISC_R_SUCCESS);
  50 }
  51
  52 static inline isc_result_t
  53 totext_dname(ARGS_TOTEXT) {
  54         isc_region_t region;
  55         dns_name_t name;
  56         dns_name_t prefix;
  57         isc_boolean_t sub;
  58
  59         REQUIRE(rdata->type == dns_rdatatype_dname);
  60         REQUIRE(rdata->length != 0);
  61
  62         dns_name_init(&name, NULL);
  63         dns_name_init(&prefix, NULL);
  64
  65         dns_rdata_toregion(rdata, &region);
  66         dns_name_fromregion(&name, &region);
  67
  68         sub = name_prefix(&name, tctx->origin, &prefix);
  69
  70         return (dns_name_totext(&prefix, sub, target));
  71 }
  72
  73 static inline isc_result_t
  74 fromwire_dname(ARGS_FROMWIRE) {
  75         dns_name_t name;
  76
  77         REQUIRE(type == dns_rdatatype_dname);
  78
  79         UNUSED(type);
  80         UNUSED(rdclass);
  81
  82         dns_decompress_setmethods(dctx, DNS_COMPRESS_NONE);
  83
  84         dns_name_init(&name, NULL);
  85         return(dns_name_fromwire(&name, source, dctx, options, target));
  86 }
  87
  88 static inline isc_result_t
  89 towire_dname(ARGS_TOWIRE) {
  90         dns_name_t name;
  91         dns_offsets_t offsets;
  92         isc_region_t region;
  93
  94         REQUIRE(rdata->type == dns_rdatatype_dname);
  95         REQUIRE(rdata->length != 0);
  96
  97         dns_compress_setmethods(cctx, DNS_COMPRESS_NONE);
  98         dns_name_init(&name, offsets);
  99         dns_rdata_toregion(rdata, &region);
 100         dns_name_fromregion(&name, &region);
 101
 102         return (dns_name_towire(&name, cctx, target));
 103 }
 104
 105 static inline int
 106 compare_dname(ARGS_COMPARE) {
 107         dns_name_t name1;
 108         dns_name_t name2;
 109         isc_region_t region1;
 110         isc_region_t region2;
 111
 112         REQUIRE(rdata1->type == rdata2->type);
 113         REQUIRE(rdata1->rdclass == rdata2->rdclass);
 114         REQUIRE(rdata1->type == dns_rdatatype_dname);
 115         REQUIRE(rdata1->length != 0);
 116         REQUIRE(rdata2->length != 0);
 117
 118         dns_name_init(&name1, NULL);
 119         dns_name_init(&name2, NULL);
 120
 121         dns_rdata_toregion(rdata1, &region1);
 122         dns_rdata_toregion(rdata2, &region2);
 123
 124         dns_name_fromregion(&name1, &region1);
 125         dns_name_fromregion(&name2, &region2);
 126
 127         return (dns_name_rdatacompare(&name1, &name2));
 128 }
 129
 130 static inline isc_result_t
 131 fromstruct_dname(ARGS_FROMSTRUCT) {
 132         dns_rdata_dname_t *dname = source;
 133         isc_region_t region;
 134
 135         REQUIRE(type == dns_rdatatype_dname);
 136         REQUIRE(source != NULL);
 137         REQUIRE(dname->common.rdtype == type);
 138         REQUIRE(dname->common.rdclass == rdclass);
 139
 140         UNUSED(type);
 141         UNUSED(rdclass);
 142
 143         dns_name_toregion(&dname->dname, &region);
 144         return (isc_buffer_copyregion(target, &region));
 145 }
 146
 147 static inline isc_result_t
 148 tostruct_dname(ARGS_TOSTRUCT) {
 149         isc_region_t region;
 150         dns_rdata_dname_t *dname = target;
 151         dns_name_t name;
 152
 153         REQUIRE(rdata->type == dns_rdatatype_dname);
 154         REQUIRE(target != NULL);
 155         REQUIRE(rdata->length != 0);
 156
 157         dname->common.rdclass = rdata->rdclass;
 158         dname->common.rdtype = rdata->type;
 159         ISC_LINK_INIT(&dname->common, link);
 160
 161         dns_name_init(&name, NULL);
 162         dns_rdata_toregion(rdata, &region);
 163         dns_name_fromregion(&name, &region);
 164         dns_name_init(&dname->dname, NULL);
 165         RETERR(name_duporclone(&name, mctx, &dname->dname));
 166         dname->mctx = mctx;
 167         return (ISC_R_SUCCESS);
 168 }
 169
 170 static inline void
 171 freestruct_dname(ARGS_FREESTRUCT) {
 172         dns_rdata_dname_t *dname = source;
 173
 174         REQUIRE(source != NULL);
 175         REQUIRE(dname->common.rdtype == dns_rdatatype_dname);
 176
 177         if (dname->mctx == NULL)
 178                 return;
 179
 180         dns_name_free(&dname->dname, dname->mctx);
 181         dname->mctx = NULL;
 182 }
 183
 184 static inline isc_result_t
 185 additionaldata_dname(ARGS_ADDLDATA) {
 186         UNUSED(rdata);
 187         UNUSED(add);
 188         UNUSED(arg);
 189
 190         REQUIRE(rdata->type == dns_rdatatype_dname);
 191
 192         return (ISC_R_SUCCESS);
 193 }
 194
 195 static inline isc_result_t
 196 digest_dname(ARGS_DIGEST) {
 197         isc_region_t r;
 198         dns_name_t name;
 199
 200         REQUIRE(rdata->type == dns_rdatatype_dname);
 201
 202         dns_rdata_toregion(rdata, &r);
 203         dns_name_init(&name, NULL);
 204         dns_name_fromregion(&name, &r);
 205
 206         return (dns_name_digest(&name, digest, arg));
 207 }
 208
 209 static inline isc_boolean_t
 210 checkowner_dname(ARGS_CHECKOWNER) {
 211
 212         REQUIRE(type == dns_rdatatype_dname);
 213
 214         UNUSED(name);
 215         UNUSED(type);
 216         UNUSED(rdclass);
 217         UNUSED(wildcard);
 218
 219         return (ISC_TRUE);
 220 }
 221
 222 static inline isc_boolean_t
 223 checknames_dname(ARGS_CHECKNAMES) {
 224
 225         REQUIRE(rdata->type == dns_rdatatype_dname);
 226
 227         UNUSED(rdata);
 228         UNUSED(owner);
 229         UNUSED(bad);
 230
 231         return (ISC_TRUE);
 232 }
 233
 234 static inline int
 235 casecompare_dname(ARGS_COMPARE) {
 236         return (compare_dname(rdata1, rdata2));
 237 }
 238 #endif  /* RDATA_GENERIC_DNAME_39_C */