external/bsd/bind/dist/lib/dns/rdata/in_1/kx_36.c

   1 /*      $NetBSD: kx_36.c,v 1.4 2014/12/10 04:37:59 christos Exp $       */
   2
   3 /*
   4  * Copyright (C) 2004, 2005, 2007, 2009  Internet Systems Consortium, Inc. ("ISC")
   5  * Copyright (C) 1999-2001, 2003  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: kx_36.c,v 1.47 2009/12/04 22:06:37 tbox Exp  */
  21
  22 /* Reviewed: Thu Mar 16 17:24:54 PST 2000 by explorer */
  23
  24 /* RFC2230 */
  25
  26 #ifndef RDATA_IN_1_KX_36_C
  27 #define RDATA_IN_1_KX_36_C
  28
  29 #define RRTYPE_KX_ATTRIBUTES (0)
  30
  31 static inline isc_result_t
  32 fromtext_in_kx(ARGS_FROMTEXT) {
  33         isc_token_t token;
  34         dns_name_t name;
  35         isc_buffer_t buffer;
  36
  37         REQUIRE(type == 36);
  38         REQUIRE(rdclass == 1);
  39
  40         UNUSED(type);
  41         UNUSED(rdclass);
  42         UNUSED(callbacks);
  43
  44         RETERR(isc_lex_getmastertoken(lexer, &token, isc_tokentype_number,
  45                                       ISC_FALSE));
  46         if (token.value.as_ulong > 0xffffU)
  47                 RETTOK(ISC_R_RANGE);
  48         RETERR(uint16_tobuffer(token.value.as_ulong, target));
  49
  50         RETERR(isc_lex_getmastertoken(lexer, &token, isc_tokentype_string,
  51                                       ISC_FALSE));
  52         dns_name_init(&name, NULL);
  53         buffer_fromregion(&buffer, &token.value.as_region);
  54         origin = (origin != NULL) ? origin : dns_rootname;
  55         RETTOK(dns_name_fromtext(&name, &buffer, origin, options, target));
  56         return (ISC_R_SUCCESS);
  57 }
  58
  59 static inline isc_result_t
  60 totext_in_kx(ARGS_TOTEXT) {
  61         isc_region_t region;
  62         dns_name_t name;
  63         dns_name_t prefix;
  64         isc_boolean_t sub;
  65         char buf[sizeof("64000")];
  66         unsigned short num;
  67
  68         REQUIRE(rdata->type == 36);
  69         REQUIRE(rdata->rdclass == 1);
  70         REQUIRE(rdata->length != 0);
  71
  72         dns_name_init(&name, NULL);
  73         dns_name_init(&prefix, NULL);
  74
  75         dns_rdata_toregion(rdata, &region);
  76         num = uint16_fromregion(&region);
  77         isc_region_consume(&region, 2);
  78         sprintf(buf, "%u", num);
  79         RETERR(str_totext(buf, target));
  80
  81         RETERR(str_totext(" ", target));
  82
  83         dns_name_fromregion(&name, &region);
  84         sub = name_prefix(&name, tctx->origin, &prefix);
  85         return (dns_name_totext(&prefix, sub, target));
  86 }
  87
  88 static inline isc_result_t
  89 fromwire_in_kx(ARGS_FROMWIRE) {
  90         dns_name_t name;
  91         isc_region_t sregion;
  92
  93         REQUIRE(type == 36);
  94         REQUIRE(rdclass == 1);
  95
  96         UNUSED(type);
  97         UNUSED(rdclass);
  98
  99         dns_decompress_setmethods(dctx, DNS_COMPRESS_NONE);
 100
 101         dns_name_init(&name, NULL);
 102
 103         isc_buffer_activeregion(source, &sregion);
 104         if (sregion.length < 2)
 105                 return (ISC_R_UNEXPECTEDEND);
 106         RETERR(mem_tobuffer(target, sregion.base, 2));
 107         isc_buffer_forward(source, 2);
 108         return (dns_name_fromwire(&name, source, dctx, options, target));
 109 }
 110
 111 static inline isc_result_t
 112 towire_in_kx(ARGS_TOWIRE) {
 113         dns_name_t name;
 114         dns_offsets_t offsets;
 115         isc_region_t region;
 116
 117         REQUIRE(rdata->type == 36);
 118         REQUIRE(rdata->rdclass == 1);
 119         REQUIRE(rdata->length != 0);
 120
 121         dns_compress_setmethods(cctx, DNS_COMPRESS_NONE);
 122         dns_rdata_toregion(rdata, &region);
 123         RETERR(mem_tobuffer(target, region.base, 2));
 124         isc_region_consume(&region, 2);
 125
 126         dns_name_init(&name, offsets);
 127         dns_name_fromregion(&name, &region);
 128
 129         return (dns_name_towire(&name, cctx, target));
 130 }
 131
 132 static inline int
 133 compare_in_kx(ARGS_COMPARE) {
 134         dns_name_t name1;
 135         dns_name_t name2;
 136         isc_region_t region1;
 137         isc_region_t region2;
 138         int order;
 139
 140         REQUIRE(rdata1->type == rdata2->type);
 141         REQUIRE(rdata1->rdclass == rdata2->rdclass);
 142         REQUIRE(rdata1->type == 36);
 143         REQUIRE(rdata1->rdclass == 1);
 144         REQUIRE(rdata1->length != 0);
 145         REQUIRE(rdata2->length != 0);
 146
 147         order = memcmp(rdata1->data, rdata2->data, 2);
 148         if (order != 0)
 149                 return (order < 0 ? -1 : 1);
 150
 151         dns_name_init(&name1, NULL);
 152         dns_name_init(&name2, NULL);
 153
 154         dns_rdata_toregion(rdata1, &region1);
 155         dns_rdata_toregion(rdata2, &region2);
 156
 157         isc_region_consume(&region1, 2);
 158         isc_region_consume(&region2, 2);
 159
 160         dns_name_fromregion(&name1, &region1);
 161         dns_name_fromregion(&name2, &region2);
 162
 163         return (dns_name_rdatacompare(&name1, &name2));
 164 }
 165
 166 static inline isc_result_t
 167 fromstruct_in_kx(ARGS_FROMSTRUCT) {
 168         dns_rdata_in_kx_t *kx = source;
 169         isc_region_t region;
 170
 171         REQUIRE(type == 36);
 172         REQUIRE(rdclass == 1);
 173         REQUIRE(source != NULL);
 174         REQUIRE(kx->common.rdtype == type);
 175         REQUIRE(kx->common.rdclass == rdclass);
 176
 177         UNUSED(type);
 178         UNUSED(rdclass);
 179
 180         RETERR(uint16_tobuffer(kx->preference, target));
 181         dns_name_toregion(&kx->exchange, &region);
 182         return (isc_buffer_copyregion(target, &region));
 183 }
 184
 185 static inline isc_result_t
 186 tostruct_in_kx(ARGS_TOSTRUCT) {
 187         isc_region_t region;
 188         dns_rdata_in_kx_t *kx = target;
 189         dns_name_t name;
 190
 191         REQUIRE(rdata->type == 36);
 192         REQUIRE(rdata->rdclass == 1);
 193         REQUIRE(target != NULL);
 194         REQUIRE(rdata->length != 0);
 195
 196         kx->common.rdclass = rdata->rdclass;
 197         kx->common.rdtype = rdata->type;
 198         ISC_LINK_INIT(&kx->common, link);
 199
 200         dns_name_init(&name, NULL);
 201         dns_rdata_toregion(rdata, &region);
 202
 203         kx->preference = uint16_fromregion(&region);
 204         isc_region_consume(&region, 2);
 205
 206         dns_name_fromregion(&name, &region);
 207         dns_name_init(&kx->exchange, NULL);
 208         RETERR(name_duporclone(&name, mctx, &kx->exchange));
 209         kx->mctx = mctx;
 210         return (ISC_R_SUCCESS);
 211 }
 212
 213 static inline void
 214 freestruct_in_kx(ARGS_FREESTRUCT) {
 215         dns_rdata_in_kx_t *kx = source;
 216
 217         REQUIRE(source != NULL);
 218         REQUIRE(kx->common.rdclass == 1);
 219         REQUIRE(kx->common.rdtype == 36);
 220
 221         if (kx->mctx == NULL)
 222                 return;
 223
 224         dns_name_free(&kx->exchange, kx->mctx);
 225         kx->mctx = NULL;
 226 }
 227
 228 static inline isc_result_t
 229 additionaldata_in_kx(ARGS_ADDLDATA) {
 230         dns_name_t name;
 231         dns_offsets_t offsets;
 232         isc_region_t region;
 233
 234         REQUIRE(rdata->type == 36);
 235         REQUIRE(rdata->rdclass == 1);
 236
 237         dns_name_init(&name, offsets);
 238         dns_rdata_toregion(rdata, &region);
 239         isc_region_consume(&region, 2);
 240         dns_name_fromregion(&name, &region);
 241
 242         return ((add)(arg, &name, dns_rdatatype_a));
 243 }
 244
 245 static inline isc_result_t
 246 digest_in_kx(ARGS_DIGEST) {
 247         isc_region_t r1, r2;
 248         dns_name_t name;
 249
 250         REQUIRE(rdata->type == 36);
 251         REQUIRE(rdata->rdclass == 1);
 252
 253         dns_rdata_toregion(rdata, &r1);
 254         r2 = r1;
 255         isc_region_consume(&r2, 2);
 256         r1.length = 2;
 257         RETERR((digest)(arg, &r1));
 258         dns_name_init(&name, NULL);
 259         dns_name_fromregion(&name, &r2);
 260         return (dns_name_digest(&name, digest, arg));
 261 }
 262
 263 static inline isc_boolean_t
 264 checkowner_in_kx(ARGS_CHECKOWNER) {
 265
 266         REQUIRE(type == 36);
 267         REQUIRE(rdclass == 1);
 268
 269         UNUSED(name);
 270         UNUSED(type);
 271         UNUSED(rdclass);
 272         UNUSED(wildcard);
 273
 274         return (ISC_TRUE);
 275 }
 276
 277 static inline isc_boolean_t
 278 checknames_in_kx(ARGS_CHECKNAMES) {
 279
 280         REQUIRE(rdata->type == 36);
 281         REQUIRE(rdata->rdclass == 1);
 282
 283         UNUSED(rdata);
 284         UNUSED(owner);
 285         UNUSED(bad);
 286
 287         return (ISC_TRUE);
 288 }
 289
 290 static inline int
 291 casecompare_in_kx(ARGS_COMPARE) {
 292         return (compare_in_kx(rdata1, rdata2));
 293 }
 294
 295 #endif  /* RDATA_IN_1_KX_36_C */