external/bsd/bind/dist/lib/dns/rdata/generic/ns_2.c

   1 /*      $NetBSD: ns_2.c,v 1.4 2014/12/10 04:37:59 christos Exp $        */
   2
   3 /*
   4  * Copyright (C) 2004, 2007, 2009  Internet Systems Consortium, Inc. ("ISC")
   5  * Copyright (C) 1998-2001  Internet Software Consortium.
   6  *
   7  * Permission to use, copy, modify, and/or distribute this software for any
   8  * purpose with or without fee is hereby granted, provided that the above
   9  * copyright notice and this permission notice appear in all copies.
  10  *
  11  * THE SOFTWARE IS PROVIDED "AS IS" AND ISC DISCLAIMS ALL WARRANTIES WITH
  12  * REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY
  13  * AND FITNESS.  IN NO EVENT SHALL ISC BE LIABLE FOR ANY SPECIAL, DIRECT,
  14  * INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM
  15  * LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE
  16  * OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
  17  * PERFORMANCE OF THIS SOFTWARE.
  18  */
  19
  20 /* Id: ns_2.c,v 1.48 2009/12/04 22:06:37 tbox Exp  */
  21
  22 /* Reviewed: Wed Mar 15 18:15:00 PST 2000 by bwelling */
  23
  24 #ifndef RDATA_GENERIC_NS_2_C
  25 #define RDATA_GENERIC_NS_2_C
  26
  27 #define RRTYPE_NS_ATTRIBUTES (DNS_RDATATYPEATTR_ZONECUTAUTH)
  28
  29 static inline isc_result_t
  30 fromtext_ns(ARGS_FROMTEXT) {
  31         isc_token_t token;
  32         dns_name_t name;
  33         isc_buffer_t buffer;
  34         isc_boolean_t ok;
  35
  36         REQUIRE(type == 2);
  37
  38         UNUSED(type);
  39         UNUSED(rdclass);
  40         UNUSED(callbacks);
  41
  42         RETERR(isc_lex_getmastertoken(lexer, &token,isc_tokentype_string,
  43                                       ISC_FALSE));
  44
  45         dns_name_init(&name, NULL);
  46         buffer_fromregion(&buffer, &token.value.as_region);
  47         origin = (origin != NULL) ? origin : dns_rootname;
  48         RETTOK(dns_name_fromtext(&name, &buffer, origin, options, target));
  49         ok = ISC_TRUE;
  50         if ((options & DNS_RDATA_CHECKNAMES) != 0)
  51                 ok = dns_name_ishostname(&name, ISC_FALSE);
  52         if (!ok && (options & DNS_RDATA_CHECKNAMESFAIL) != 0)
  53                 RETTOK(DNS_R_BADNAME);
  54         if (!ok && callbacks != NULL)
  55                 warn_badname(&name, lexer, callbacks);
  56         return (ISC_R_SUCCESS);
  57 }
  58
  59 static inline isc_result_t
  60 totext_ns(ARGS_TOTEXT) {
  61         isc_region_t region;
  62         dns_name_t name;
  63         dns_name_t prefix;
  64         isc_boolean_t sub;
  65
  66         REQUIRE(rdata->type == 2);
  67         REQUIRE(rdata->length != 0);
  68
  69         dns_name_init(&name, NULL);
  70         dns_name_init(&prefix, NULL);
  71
  72         dns_rdata_toregion(rdata, &region);
  73         dns_name_fromregion(&name, &region);
  74
  75         sub = name_prefix(&name, tctx->origin, &prefix);
  76
  77         return (dns_name_totext(&prefix, sub, target));
  78 }
  79
  80 static inline isc_result_t
  81 fromwire_ns(ARGS_FROMWIRE) {
  82         dns_name_t name;
  83
  84         REQUIRE(type == 2);
  85
  86         UNUSED(type);
  87         UNUSED(rdclass);
  88
  89         dns_decompress_setmethods(dctx, DNS_COMPRESS_GLOBAL14);
  90
  91         dns_name_init(&name, NULL);
  92         return (dns_name_fromwire(&name, source, dctx, options, target));
  93 }
  94
  95 static inline isc_result_t
  96 towire_ns(ARGS_TOWIRE) {
  97         dns_name_t name;
  98         dns_offsets_t offsets;
  99         isc_region_t region;
 100
 101         REQUIRE(rdata->type == 2);
 102         REQUIRE(rdata->length != 0);
 103
 104         dns_compress_setmethods(cctx, DNS_COMPRESS_GLOBAL14);
 105
 106         dns_name_init(&name, offsets);
 107         dns_rdata_toregion(rdata, &region);
 108         dns_name_fromregion(&name, &region);
 109
 110         return (dns_name_towire(&name, cctx, target));
 111 }
 112
 113 static inline int
 114 compare_ns(ARGS_COMPARE) {
 115         dns_name_t name1;
 116         dns_name_t name2;
 117         isc_region_t region1;
 118         isc_region_t region2;
 119
 120         REQUIRE(rdata1->type == rdata2->type);
 121         REQUIRE(rdata1->rdclass == rdata2->rdclass);
 122         REQUIRE(rdata1->type == 2);
 123         REQUIRE(rdata1->length != 0);
 124         REQUIRE(rdata2->length != 0);
 125
 126         dns_name_init(&name1, NULL);
 127         dns_name_init(&name2, NULL);
 128
 129         dns_rdata_toregion(rdata1, &region1);
 130         dns_rdata_toregion(rdata2, &region2);
 131
 132         dns_name_fromregion(&name1, &region1);
 133         dns_name_fromregion(&name2, &region2);
 134
 135         return (dns_name_rdatacompare(&name1, &name2));
 136 }
 137
 138 static inline isc_result_t
 139 fromstruct_ns(ARGS_FROMSTRUCT) {
 140         dns_rdata_ns_t *ns = source;
 141         isc_region_t region;
 142
 143         REQUIRE(type == 2);
 144         REQUIRE(source != NULL);
 145         REQUIRE(ns->common.rdtype == type);
 146         REQUIRE(ns->common.rdclass == rdclass);
 147
 148         UNUSED(type);
 149         UNUSED(rdclass);
 150
 151         dns_name_toregion(&ns->name, &region);
 152         return (isc_buffer_copyregion(target, &region));
 153 }
 154
 155 static inline isc_result_t
 156 tostruct_ns(ARGS_TOSTRUCT) {
 157         isc_region_t region;
 158         dns_rdata_ns_t *ns = target;
 159         dns_name_t name;
 160
 161         REQUIRE(rdata->type == 2);
 162         REQUIRE(target != NULL);
 163         REQUIRE(rdata->length != 0);
 164
 165         ns->common.rdclass = rdata->rdclass;
 166         ns->common.rdtype = rdata->type;
 167         ISC_LINK_INIT(&ns->common, link);
 168
 169         dns_name_init(&name, NULL);
 170         dns_rdata_toregion(rdata, &region);
 171         dns_name_fromregion(&name, &region);
 172         dns_name_init(&ns->name, NULL);
 173         RETERR(name_duporclone(&name, mctx, &ns->name));
 174         ns->mctx = mctx;
 175         return (ISC_R_SUCCESS);
 176 }
 177
 178 static inline void
 179 freestruct_ns(ARGS_FREESTRUCT) {
 180         dns_rdata_ns_t *ns = source;
 181
 182         REQUIRE(source != NULL);
 183
 184         if (ns->mctx == NULL)
 185                 return;
 186
 187         dns_name_free(&ns->name, ns->mctx);
 188         ns->mctx = NULL;
 189 }
 190
 191 static inline isc_result_t
 192 additionaldata_ns(ARGS_ADDLDATA) {
 193         dns_name_t name;
 194         dns_offsets_t offsets;
 195         isc_region_t region;
 196
 197         REQUIRE(rdata->type == 2);
 198
 199         dns_name_init(&name, offsets);
 200         dns_rdata_toregion(rdata, &region);
 201         dns_name_fromregion(&name, &region);
 202
 203         return ((add)(arg, &name, dns_rdatatype_a));
 204 }
 205
 206 static inline isc_result_t
 207 digest_ns(ARGS_DIGEST) {
 208         isc_region_t r;
 209         dns_name_t name;
 210
 211         REQUIRE(rdata->type == 2);
 212
 213         dns_rdata_toregion(rdata, &r);
 214         dns_name_init(&name, NULL);
 215         dns_name_fromregion(&name, &r);
 216
 217         return (dns_name_digest(&name, digest, arg));
 218 }
 219
 220 static inline isc_boolean_t
 221 checkowner_ns(ARGS_CHECKOWNER) {
 222
 223         REQUIRE(type == 2);
 224
 225         UNUSED(name);
 226         UNUSED(type);
 227         UNUSED(rdclass);
 228         UNUSED(wildcard);
 229
 230         return (ISC_TRUE);
 231 }
 232
 233 static inline isc_boolean_t
 234 checknames_ns(ARGS_CHECKNAMES) {
 235         isc_region_t region;
 236         dns_name_t name;
 237
 238         REQUIRE(rdata->type == 2);
 239
 240         UNUSED(owner);
 241
 242         dns_rdata_toregion(rdata, &region);
 243         dns_name_init(&name, NULL);
 244         dns_name_fromregion(&name, &region);
 245         if (!dns_name_ishostname(&name, ISC_FALSE)) {
 246                 if (bad != NULL)
 247                         dns_name_clone(&name, bad);
 248                 return (ISC_FALSE);
 249         }
 250         return (ISC_TRUE);
 251 }
 252
 253 static inline int
 254 casecompare_ns(ARGS_COMPARE) {
 255         return (compare_ns(rdata1, rdata2));
 256 }
 257
 258 #endif  /* RDATA_GENERIC_NS_2_C */