contrib/bind9/lib/dns/rdata/in_1/aaaa_28.c

   1 /*
   2  * Copyright (C) 2004, 2005, 2007, 2009, 2014, 2015  Internet Systems Consortium, Inc. ("ISC")
   3  * Copyright (C) 1999-2002  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: aaaa_28.c,v 1.47 2009/12/04 22:06:37 tbox Exp $ */
  19
  20 /* Reviewed: Thu Mar 16 16:52:50 PST 2000 by bwelling */
  21
  22 /* RFC1886 */
  23
  24 #ifndef RDATA_IN_1_AAAA_28_C
  25 #define RDATA_IN_1_AAAA_28_C
  26
  27 #include <isc/net.h>
  28
  29 #define RRTYPE_AAAA_ATTRIBUTES (0)
  30
  31 static inline isc_result_t
  32 fromtext_in_aaaa(ARGS_FROMTEXT) {
  33         isc_token_t token;
  34         unsigned char addr[16];
  35         isc_region_t region;
  36
  37         REQUIRE(type == dns_rdatatype_aaaa);
  38         REQUIRE(rdclass == dns_rdataclass_in);
  39
  40         UNUSED(type);
  41         UNUSED(origin);
  42         UNUSED(options);
  43         UNUSED(rdclass);
  44         UNUSED(callbacks);
  45
  46         RETERR(isc_lex_getmastertoken(lexer, &token, isc_tokentype_string,
  47                                       ISC_FALSE));
  48
  49         if (inet_pton(AF_INET6, DNS_AS_STR(token), addr) != 1)
  50                 RETTOK(DNS_R_BADAAAA);
  51         isc_buffer_availableregion(target, &region);
  52         if (region.length < 16)
  53                 return (ISC_R_NOSPACE);
  54         memmove(region.base, addr, 16);
  55         isc_buffer_add(target, 16);
  56         return (ISC_R_SUCCESS);
  57 }
  58
  59 static inline isc_result_t
  60 totext_in_aaaa(ARGS_TOTEXT) {
  61         isc_region_t region;
  62
  63         UNUSED(tctx);
  64
  65         REQUIRE(rdata->type == dns_rdatatype_aaaa);
  66         REQUIRE(rdata->rdclass == dns_rdataclass_in);
  67         REQUIRE(rdata->length == 16);
  68
  69         dns_rdata_toregion(rdata, &region);
  70         return (inet_totext(AF_INET6, &region, target));
  71 }
  72
  73 static inline isc_result_t
  74 fromwire_in_aaaa(ARGS_FROMWIRE) {
  75         isc_region_t sregion;
  76         isc_region_t tregion;
  77
  78         REQUIRE(type == dns_rdatatype_aaaa);
  79         REQUIRE(rdclass == dns_rdataclass_in);
  80
  81         UNUSED(type);
  82         UNUSED(dctx);
  83         UNUSED(options);
  84         UNUSED(rdclass);
  85
  86         isc_buffer_activeregion(source, &sregion);
  87         isc_buffer_availableregion(target, &tregion);
  88         if (sregion.length < 16)
  89                 return (ISC_R_UNEXPECTEDEND);
  90         if (tregion.length < 16)
  91                 return (ISC_R_NOSPACE);
  92
  93         memmove(tregion.base, sregion.base, 16);
  94         isc_buffer_forward(source, 16);
  95         isc_buffer_add(target, 16);
  96         return (ISC_R_SUCCESS);
  97 }
  98
  99 static inline isc_result_t
 100 towire_in_aaaa(ARGS_TOWIRE) {
 101         isc_region_t region;
 102
 103         UNUSED(cctx);
 104
 105         REQUIRE(rdata->type == dns_rdatatype_aaaa);
 106         REQUIRE(rdata->rdclass == dns_rdataclass_in);
 107         REQUIRE(rdata->length == 16);
 108
 109         isc_buffer_availableregion(target, &region);
 110         if (region.length < rdata->length)
 111                 return (ISC_R_NOSPACE);
 112         memmove(region.base, rdata->data, rdata->length);
 113         isc_buffer_add(target, 16);
 114         return (ISC_R_SUCCESS);
 115 }
 116
 117 static inline int
 118 compare_in_aaaa(ARGS_COMPARE) {
 119         isc_region_t r1;
 120         isc_region_t r2;
 121
 122         REQUIRE(rdata1->type == rdata2->type);
 123         REQUIRE(rdata1->rdclass == rdata2->rdclass);
 124         REQUIRE(rdata1->type == dns_rdatatype_aaaa);
 125         REQUIRE(rdata1->rdclass == dns_rdataclass_in);
 126         REQUIRE(rdata1->length == 16);
 127         REQUIRE(rdata2->length == 16);
 128
 129         dns_rdata_toregion(rdata1, &r1);
 130         dns_rdata_toregion(rdata2, &r2);
 131         return (isc_region_compare(&r1, &r2));
 132 }
 133
 134 static inline isc_result_t
 135 fromstruct_in_aaaa(ARGS_FROMSTRUCT) {
 136         dns_rdata_in_aaaa_t *aaaa = source;
 137
 138         REQUIRE(type == dns_rdatatype_aaaa);
 139         REQUIRE(rdclass == dns_rdataclass_in);
 140         REQUIRE(source != NULL);
 141         REQUIRE(aaaa->common.rdtype == type);
 142         REQUIRE(aaaa->common.rdclass == rdclass);
 143
 144         UNUSED(type);
 145         UNUSED(rdclass);
 146
 147         return (mem_tobuffer(target, aaaa->in6_addr.s6_addr, 16));
 148 }
 149
 150 static inline isc_result_t
 151 tostruct_in_aaaa(ARGS_TOSTRUCT) {
 152         dns_rdata_in_aaaa_t *aaaa = target;
 153         isc_region_t r;
 154
 155         REQUIRE(rdata->type == dns_rdatatype_aaaa);
 156         REQUIRE(rdata->rdclass == dns_rdataclass_in);
 157         REQUIRE(target != NULL);
 158         REQUIRE(rdata->length == 16);
 159
 160         UNUSED(mctx);
 161
 162         aaaa->common.rdclass = rdata->rdclass;
 163         aaaa->common.rdtype = rdata->type;
 164         ISC_LINK_INIT(&aaaa->common, link);
 165
 166         dns_rdata_toregion(rdata, &r);
 167         INSIST(r.length == 16);
 168         memmove(aaaa->in6_addr.s6_addr, r.base, 16);
 169
 170         return (ISC_R_SUCCESS);
 171 }
 172
 173 static inline void
 174 freestruct_in_aaaa(ARGS_FREESTRUCT) {
 175         dns_rdata_in_aaaa_t *aaaa = source;
 176
 177         REQUIRE(source != NULL);
 178         REQUIRE(aaaa->common.rdclass == dns_rdataclass_in);
 179         REQUIRE(aaaa->common.rdtype == dns_rdatatype_aaaa);
 180
 181         UNUSED(aaaa);
 182 }
 183
 184 static inline isc_result_t
 185 additionaldata_in_aaaa(ARGS_ADDLDATA) {
 186         REQUIRE(rdata->type == dns_rdatatype_aaaa);
 187         REQUIRE(rdata->rdclass == dns_rdataclass_in);
 188
 189         UNUSED(rdata);
 190         UNUSED(add);
 191         UNUSED(arg);
 192
 193         return (ISC_R_SUCCESS);
 194 }
 195
 196 static inline isc_result_t
 197 digest_in_aaaa(ARGS_DIGEST) {
 198         isc_region_t r;
 199
 200         REQUIRE(rdata->type == dns_rdatatype_aaaa);
 201         REQUIRE(rdata->rdclass == dns_rdataclass_in);
 202
 203         dns_rdata_toregion(rdata, &r);
 204
 205         return ((digest)(arg, &r));
 206 }
 207
 208 static inline isc_boolean_t
 209 checkowner_in_aaaa(ARGS_CHECKOWNER) {
 210         dns_name_t prefix, suffix;
 211
 212         REQUIRE(type == dns_rdatatype_aaaa);
 213         REQUIRE(rdclass == dns_rdataclass_in);
 214
 215         UNUSED(type);
 216         UNUSED(rdclass);
 217
 218         /*
 219          * Handle Active Diretory gc._msdcs.<forest> name.
 220          */
 221         if (dns_name_countlabels(name) > 2U) {
 222                 dns_name_init(&prefix, NULL);
 223                 dns_name_init(&suffix, NULL);
 224                 dns_name_split(name, dns_name_countlabels(name) - 2,
 225                                &prefix, &suffix);
 226                 if (dns_name_equal(&gc_msdcs, &prefix) &&
 227                     dns_name_ishostname(&suffix, ISC_FALSE))
 228                         return (ISC_TRUE);
 229         }
 230
 231         return (dns_name_ishostname(name, wildcard));
 232 }
 233
 234 static inline isc_boolean_t
 235 checknames_in_aaaa(ARGS_CHECKNAMES) {
 236
 237         REQUIRE(rdata->type == dns_rdatatype_aaaa);
 238         REQUIRE(rdata->rdclass == dns_rdataclass_in);
 239
 240         UNUSED(rdata);
 241         UNUSED(owner);
 242         UNUSED(bad);
 243
 244         return (ISC_TRUE);
 245 }
 246
 247 static inline int
 248 casecompare_in_aaaa(ARGS_COMPARE) {
 249         return (compare_in_aaaa(rdata1, rdata2));
 250 }
 251 #endif  /* RDATA_IN_1_AAAA_28_C */