external/bsd/bind/dist/lib/dns/rdata/in_1/a_1.c

   1 /*      $NetBSD: a_1.c,v 1.5 2014/12/10 04:37:59 christos Exp $ */
   2
   3 /*
   4  * Copyright (C) 2004, 2007, 2009, 2014  Internet Systems Consortium, Inc. ("ISC")
   5  * Copyright (C) 1998-2002  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: a_1.c,v 1.55 2009/12/04 22:06:37 tbox Exp  */
  21
  22 /* Reviewed: Thu Mar 16 16:52:50 PST 2000 by bwelling */
  23
  24 #ifndef RDATA_IN_1_A_1_C
  25 #define RDATA_IN_1_A_1_C
  26
  27 #include <string.h>
  28
  29 #include <isc/net.h>
  30
  31 #define RRTYPE_A_ATTRIBUTES (0)
  32
  33 static inline isc_result_t
  34 fromtext_in_a(ARGS_FROMTEXT) {
  35         isc_token_t token;
  36         struct in_addr addr;
  37         isc_region_t region;
  38
  39         REQUIRE(type == 1);
  40         REQUIRE(rdclass == 1);
  41
  42         UNUSED(type);
  43         UNUSED(origin);
  44         UNUSED(options);
  45         UNUSED(rdclass);
  46
  47         RETERR(isc_lex_getmastertoken(lexer, &token, isc_tokentype_string,
  48                                       ISC_FALSE));
  49
  50         if (getquad(DNS_AS_STR(token), &addr, lexer, callbacks) != 1)
  51                 RETTOK(DNS_R_BADDOTTEDQUAD);
  52         isc_buffer_availableregion(target, &region);
  53         if (region.length < 4)
  54                 return (ISC_R_NOSPACE);
  55         memmove(region.base, &addr, 4);
  56         isc_buffer_add(target, 4);
  57         return (ISC_R_SUCCESS);
  58 }
  59
  60 static inline isc_result_t
  61 totext_in_a(ARGS_TOTEXT) {
  62         isc_region_t region;
  63
  64         REQUIRE(rdata->type == 1);
  65         REQUIRE(rdata->rdclass == 1);
  66         REQUIRE(rdata->length == 4);
  67
  68         UNUSED(tctx);
  69
  70         dns_rdata_toregion(rdata, &region);
  71         return (inet_totext(AF_INET, &region, target));
  72 }
  73
  74 static inline isc_result_t
  75 fromwire_in_a(ARGS_FROMWIRE) {
  76         isc_region_t sregion;
  77         isc_region_t tregion;
  78
  79         REQUIRE(type == 1);
  80         REQUIRE(rdclass == 1);
  81
  82         UNUSED(type);
  83         UNUSED(dctx);
  84         UNUSED(options);
  85         UNUSED(rdclass);
  86
  87         isc_buffer_activeregion(source, &sregion);
  88         isc_buffer_availableregion(target, &tregion);
  89         if (sregion.length < 4)
  90                 return (ISC_R_UNEXPECTEDEND);
  91         if (tregion.length < 4)
  92                 return (ISC_R_NOSPACE);
  93
  94         memmove(tregion.base, sregion.base, 4);
  95         isc_buffer_forward(source, 4);
  96         isc_buffer_add(target, 4);
  97         return (ISC_R_SUCCESS);
  98 }
  99
 100 static inline isc_result_t
 101 towire_in_a(ARGS_TOWIRE) {
 102         isc_region_t region;
 103
 104         REQUIRE(rdata->type == 1);
 105         REQUIRE(rdata->rdclass == 1);
 106         REQUIRE(rdata->length == 4);
 107
 108         UNUSED(cctx);
 109
 110         isc_buffer_availableregion(target, &region);
 111         if (region.length < rdata->length)
 112                 return (ISC_R_NOSPACE);
 113         memmove(region.base, rdata->data, rdata->length);
 114         isc_buffer_add(target, 4);
 115         return (ISC_R_SUCCESS);
 116 }
 117
 118 static inline int
 119 compare_in_a(ARGS_COMPARE) {
 120         isc_region_t r1;
 121         isc_region_t r2;
 122
 123         REQUIRE(rdata1->type == rdata2->type);
 124         REQUIRE(rdata1->rdclass == rdata2->rdclass);
 125         REQUIRE(rdata1->type == 1);
 126         REQUIRE(rdata1->rdclass == 1);
 127         REQUIRE(rdata1->length == 4);
 128         REQUIRE(rdata2->length == 4);
 129
 130         dns_rdata_toregion(rdata1, &r1);
 131         dns_rdata_toregion(rdata2, &r2);
 132         return (isc_region_compare(&r1, &r2));
 133 }
 134
 135 static inline isc_result_t
 136 fromstruct_in_a(ARGS_FROMSTRUCT) {
 137         dns_rdata_in_a_t *a = source;
 138         isc_uint32_t n;
 139
 140         REQUIRE(type == 1);
 141         REQUIRE(rdclass == 1);
 142         REQUIRE(source != NULL);
 143         REQUIRE(a->common.rdtype == type);
 144         REQUIRE(a->common.rdclass == rdclass);
 145
 146         UNUSED(type);
 147         UNUSED(rdclass);
 148
 149         n = ntohl(a->in_addr.s_addr);
 150
 151         return (uint32_tobuffer(n, target));
 152 }
 153
 154
 155 static inline isc_result_t
 156 tostruct_in_a(ARGS_TOSTRUCT) {
 157         dns_rdata_in_a_t *a = target;
 158         isc_uint32_t n;
 159         isc_region_t region;
 160
 161         REQUIRE(rdata->type == 1);
 162         REQUIRE(rdata->rdclass == 1);
 163         REQUIRE(rdata->length == 4);
 164
 165         UNUSED(mctx);
 166
 167         a->common.rdclass = rdata->rdclass;
 168         a->common.rdtype = rdata->type;
 169         ISC_LINK_INIT(&a->common, link);
 170
 171         dns_rdata_toregion(rdata, &region);
 172         n = uint32_fromregion(&region);
 173         a->in_addr.s_addr = htonl(n);
 174
 175         return (ISC_R_SUCCESS);
 176 }
 177
 178 static inline void
 179 freestruct_in_a(ARGS_FREESTRUCT) {
 180         dns_rdata_in_a_t *a = source;
 181
 182         REQUIRE(source != NULL);
 183         REQUIRE(a->common.rdtype == 1);
 184         REQUIRE(a->common.rdclass == 1);
 185
 186         UNUSED(a);
 187 }
 188
 189 static inline isc_result_t
 190 additionaldata_in_a(ARGS_ADDLDATA) {
 191         REQUIRE(rdata->type == 1);
 192         REQUIRE(rdata->rdclass == 1);
 193
 194         UNUSED(rdata);
 195         UNUSED(add);
 196         UNUSED(arg);
 197
 198         return (ISC_R_SUCCESS);
 199 }
 200
 201 static inline isc_result_t
 202 digest_in_a(ARGS_DIGEST) {
 203         isc_region_t r;
 204
 205         REQUIRE(rdata->type == 1);
 206         REQUIRE(rdata->rdclass == 1);
 207
 208         dns_rdata_toregion(rdata, &r);
 209
 210         return ((digest)(arg, &r));
 211 }
 212
 213 static inline isc_boolean_t
 214 checkowner_in_a(ARGS_CHECKOWNER) {
 215
 216         REQUIRE(type == 1);
 217         REQUIRE(rdclass == 1);
 218
 219         UNUSED(type);
 220         UNUSED(rdclass);
 221
 222         return (dns_name_ishostname(name, wildcard));
 223 }
 224
 225 static inline isc_boolean_t
 226 checknames_in_a(ARGS_CHECKNAMES) {
 227
 228         REQUIRE(rdata->type == 1);
 229         REQUIRE(rdata->rdclass == 1);
 230
 231         UNUSED(rdata);
 232         UNUSED(owner);
 233         UNUSED(bad);
 234
 235         return (ISC_TRUE);
 236 }
 237
 238 static inline int
 239 casecompare_in_a(ARGS_COMPARE) {
 240         return (compare_in_a(rdata1, rdata2));
 241 }
 242
 243 #endif  /* RDATA_IN_1_A_1_C */