contrib/bind-9.5.2/lib/dns/rdata/generic/ns_2.c

   1 /*
   2  * Copyright (C) 2004, 2007  Internet Systems Consortium, Inc. ("ISC")
   3  * Copyright (C) 1998-2001  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: ns_2.c,v 1.46 2007/06/19 23:47:17 tbox Exp $ */
  19
  20 /* Reviewed: Wed Mar 15 18:15:00 PST 2000 by bwelling */
  21
  22 #ifndef RDATA_GENERIC_NS_2_C
  23 #define RDATA_GENERIC_NS_2_C
  24
  25 #define RRTYPE_NS_ATTRIBUTES (DNS_RDATATYPEATTR_ZONECUTAUTH)
  26
  27 static inline isc_result_t
  28 fromtext_ns(ARGS_FROMTEXT) {
  29         isc_token_t token;
  30         dns_name_t name;
  31         isc_buffer_t buffer;
  32         isc_boolean_t ok;
  33
  34         REQUIRE(type == 2);
  35
  36         UNUSED(type);
  37         UNUSED(rdclass);
  38         UNUSED(callbacks);
  39
  40         RETERR(isc_lex_getmastertoken(lexer, &token,isc_tokentype_string,
  41                                       ISC_FALSE));
  42
  43         dns_name_init(&name, NULL);
  44         buffer_fromregion(&buffer, &token.value.as_region);
  45         origin = (origin != NULL) ? origin : dns_rootname;
  46         RETTOK(dns_name_fromtext(&name, &buffer, origin, options, target));
  47         ok = ISC_TRUE;
  48         if ((options & DNS_RDATA_CHECKNAMES) != 0)
  49                 ok = dns_name_ishostname(&name, ISC_FALSE);
  50         if (!ok && (options & DNS_RDATA_CHECKNAMESFAIL) != 0)
  51                 RETTOK(DNS_R_BADNAME);
  52         if (!ok && callbacks != NULL)
  53                 warn_badname(&name, lexer, callbacks);
  54         return (ISC_R_SUCCESS);
  55 }
  56
  57 static inline isc_result_t
  58 totext_ns(ARGS_TOTEXT) {
  59         isc_region_t region;
  60         dns_name_t name;
  61         dns_name_t prefix;
  62         isc_boolean_t sub;
  63
  64         REQUIRE(rdata->type == 2);
  65         REQUIRE(rdata->length != 0);
  66
  67         dns_name_init(&name, NULL);
  68         dns_name_init(&prefix, NULL);
  69
  70         dns_rdata_toregion(rdata, &region);
  71         dns_name_fromregion(&name, &region);
  72
  73         sub = name_prefix(&name, tctx->origin, &prefix);
  74
  75         return (dns_name_totext(&prefix, sub, target));
  76 }
  77
  78 static inline isc_result_t
  79 fromwire_ns(ARGS_FROMWIRE) {
  80         dns_name_t name;
  81
  82         REQUIRE(type == 2);
  83
  84         UNUSED(type);
  85         UNUSED(rdclass);
  86
  87         dns_decompress_setmethods(dctx, DNS_COMPRESS_GLOBAL14);
  88
  89         dns_name_init(&name, NULL);
  90         return (dns_name_fromwire(&name, source, dctx, options, target));
  91 }
  92
  93 static inline isc_result_t
  94 towire_ns(ARGS_TOWIRE) {
  95         dns_name_t name;
  96         dns_offsets_t offsets;
  97         isc_region_t region;
  98
  99         REQUIRE(rdata->type == 2);
 100         REQUIRE(rdata->length != 0);
 101
 102         dns_compress_setmethods(cctx, DNS_COMPRESS_GLOBAL14);
 103
 104         dns_name_init(&name, offsets);
 105         dns_rdata_toregion(rdata, &region);
 106         dns_name_fromregion(&name, &region);
 107
 108         return (dns_name_towire(&name, cctx, target));
 109 }
 110
 111 static inline int
 112 compare_ns(ARGS_COMPARE) {
 113         dns_name_t name1;
 114         dns_name_t name2;
 115         isc_region_t region1;
 116         isc_region_t region2;
 117
 118         REQUIRE(rdata1->type == rdata2->type);
 119         REQUIRE(rdata1->rdclass == rdata2->rdclass);
 120         REQUIRE(rdata1->type == 2);
 121         REQUIRE(rdata1->length != 0);
 122         REQUIRE(rdata2->length != 0);
 123
 124         dns_name_init(&name1, NULL);
 125         dns_name_init(&name2, NULL);
 126
 127         dns_rdata_toregion(rdata1, &region1);
 128         dns_rdata_toregion(rdata2, &region2);
 129
 130         dns_name_fromregion(&name1, &region1);
 131         dns_name_fromregion(&name2, &region2);
 132
 133         return (dns_name_rdatacompare(&name1, &name2));
 134 }
 135
 136 static inline isc_result_t
 137 fromstruct_ns(ARGS_FROMSTRUCT) {
 138         dns_rdata_ns_t *ns = source;
 139         isc_region_t region;
 140
 141         REQUIRE(type == 2);
 142         REQUIRE(source != NULL);
 143         REQUIRE(ns->common.rdtype == type);
 144         REQUIRE(ns->common.rdclass == rdclass);
 145
 146         UNUSED(type);
 147         UNUSED(rdclass);
 148
 149         dns_name_toregion(&ns->name, &region);
 150         return (isc_buffer_copyregion(target, &region));
 151 }
 152
 153 static inline isc_result_t
 154 tostruct_ns(ARGS_TOSTRUCT) {
 155         isc_region_t region;
 156         dns_rdata_ns_t *ns = target;
 157         dns_name_t name;
 158
 159         REQUIRE(rdata->type == 2);
 160         REQUIRE(target != NULL);
 161         REQUIRE(rdata->length != 0);
 162
 163         ns->common.rdclass = rdata->rdclass;
 164         ns->common.rdtype = rdata->type;
 165         ISC_LINK_INIT(&ns->common, link);
 166
 167         dns_name_init(&name, NULL);
 168         dns_rdata_toregion(rdata, &region);
 169         dns_name_fromregion(&name, &region);
 170         dns_name_init(&ns->name, NULL);
 171         RETERR(name_duporclone(&name, mctx, &ns->name));
 172         ns->mctx = mctx;
 173         return (ISC_R_SUCCESS);
 174 }
 175
 176 static inline void
 177 freestruct_ns(ARGS_FREESTRUCT) {
 178         dns_rdata_ns_t *ns = source;
 179
 180         REQUIRE(source != NULL);
 181
 182         if (ns->mctx == NULL)
 183                 return;
 184
 185         dns_name_free(&ns->name, ns->mctx);
 186         ns->mctx = NULL;
 187 }
 188
 189 static inline isc_result_t
 190 additionaldata_ns(ARGS_ADDLDATA) {
 191         dns_name_t name;
 192         dns_offsets_t offsets;
 193         isc_region_t region;
 194
 195         REQUIRE(rdata->type == 2);
 196
 197         dns_name_init(&name, offsets);
 198         dns_rdata_toregion(rdata, &region);
 199         dns_name_fromregion(&name, &region);
 200
 201         return ((add)(arg, &name, dns_rdatatype_a));
 202 }
 203
 204 static inline isc_result_t
 205 digest_ns(ARGS_DIGEST) {
 206         isc_region_t r;
 207         dns_name_t name;
 208
 209         REQUIRE(rdata->type == 2);
 210
 211         dns_rdata_toregion(rdata, &r);
 212         dns_name_init(&name, NULL);
 213         dns_name_fromregion(&name, &r);
 214
 215         return (dns_name_digest(&name, digest, arg));
 216 }
 217
 218 static inline isc_boolean_t
 219 checkowner_ns(ARGS_CHECKOWNER) {
 220
 221         REQUIRE(type == 2);
 222
 223         UNUSED(name);
 224         UNUSED(type);
 225         UNUSED(rdclass);
 226         UNUSED(wildcard);
 227
 228         return (ISC_TRUE);
 229 }
 230
 231 static inline isc_boolean_t
 232 checknames_ns(ARGS_CHECKNAMES) {
 233         isc_region_t region;
 234         dns_name_t name;
 235
 236         REQUIRE(rdata->type == 2);
 237
 238         UNUSED(owner);
 239
 240         dns_rdata_toregion(rdata, &region);
 241         dns_name_init(&name, NULL);
 242         dns_name_fromregion(&name, &region);
 243         if (!dns_name_ishostname(&name, ISC_FALSE)) {
 244                 if (bad != NULL)
 245                         dns_name_clone(&name, bad);
 246                 return (ISC_FALSE);
 247         }
 248         return (ISC_TRUE);
 249 }
 250
 251 #endif  /* RDATA_GENERIC_NS_2_C */