contrib/bind-9.5.2/lib/dns/rdata/in_1/kx_36.c

   1 /*
   2  * Copyright (C) 2004, 2005, 2007  Internet Systems Consortium, Inc. ("ISC")
   3  * Copyright (C) 1999-2001, 2003  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: kx_36.c,v 1.45 2007/06/19 23:47:17 tbox Exp $ */
  19
  20 /* Reviewed: Thu Mar 16 17:24:54 PST 2000 by explorer */
  21
  22 /* RFC2230 */
  23
  24 #ifndef RDATA_IN_1_KX_36_C
  25 #define RDATA_IN_1_KX_36_C
  26
  27 #define RRTYPE_KX_ATTRIBUTES (0)
  28
  29 static inline isc_result_t
  30 fromtext_in_kx(ARGS_FROMTEXT) {
  31         isc_token_t token;
  32         dns_name_t name;
  33         isc_buffer_t buffer;
  34
  35         REQUIRE(type == 36);
  36         REQUIRE(rdclass == 1);
  37
  38         UNUSED(type);
  39         UNUSED(rdclass);
  40         UNUSED(callbacks);
  41
  42         RETERR(isc_lex_getmastertoken(lexer, &token, isc_tokentype_number,
  43                                       ISC_FALSE));
  44         if (token.value.as_ulong > 0xffffU)
  45                 RETTOK(ISC_R_RANGE);
  46         RETERR(uint16_tobuffer(token.value.as_ulong, target));
  47
  48         RETERR(isc_lex_getmastertoken(lexer, &token, isc_tokentype_string,
  49                                       ISC_FALSE));
  50         dns_name_init(&name, NULL);
  51         buffer_fromregion(&buffer, &token.value.as_region);
  52         origin = (origin != NULL) ? origin : dns_rootname;
  53         RETTOK(dns_name_fromtext(&name, &buffer, origin, options, target));
  54         return (ISC_R_SUCCESS);
  55 }
  56
  57 static inline isc_result_t
  58 totext_in_kx(ARGS_TOTEXT) {
  59         isc_region_t region;
  60         dns_name_t name;
  61         dns_name_t prefix;
  62         isc_boolean_t sub;
  63         char buf[sizeof("64000")];
  64         unsigned short num;
  65
  66         REQUIRE(rdata->type == 36);
  67         REQUIRE(rdata->rdclass == 1);
  68         REQUIRE(rdata->length != 0);
  69
  70         dns_name_init(&name, NULL);
  71         dns_name_init(&prefix, NULL);
  72
  73         dns_rdata_toregion(rdata, &region);
  74         num = uint16_fromregion(&region);
  75         isc_region_consume(&region, 2);
  76         sprintf(buf, "%u", num);
  77         RETERR(str_totext(buf, target));
  78
  79         RETERR(str_totext(" ", target));
  80
  81         dns_name_fromregion(&name, &region);
  82         sub = name_prefix(&name, tctx->origin, &prefix);
  83         return (dns_name_totext(&prefix, sub, target));
  84 }
  85
  86 static inline isc_result_t
  87 fromwire_in_kx(ARGS_FROMWIRE) {
  88         dns_name_t name;
  89         isc_region_t sregion;
  90
  91         REQUIRE(type == 36);
  92         REQUIRE(rdclass == 1);
  93
  94         UNUSED(type);
  95         UNUSED(rdclass);
  96
  97         dns_decompress_setmethods(dctx, DNS_COMPRESS_NONE);
  98
  99         dns_name_init(&name, NULL);
 100
 101         isc_buffer_activeregion(source, &sregion);
 102         if (sregion.length < 2)
 103                 return (ISC_R_UNEXPECTEDEND);
 104         RETERR(mem_tobuffer(target, sregion.base, 2));
 105         isc_buffer_forward(source, 2);
 106         return (dns_name_fromwire(&name, source, dctx, options, target));
 107 }
 108
 109 static inline isc_result_t
 110 towire_in_kx(ARGS_TOWIRE) {
 111         dns_name_t name;
 112         dns_offsets_t offsets;
 113         isc_region_t region;
 114
 115         REQUIRE(rdata->type == 36);
 116         REQUIRE(rdata->rdclass == 1);
 117         REQUIRE(rdata->length != 0);
 118
 119         dns_compress_setmethods(cctx, DNS_COMPRESS_NONE);
 120         dns_rdata_toregion(rdata, &region);
 121         RETERR(mem_tobuffer(target, region.base, 2));
 122         isc_region_consume(&region, 2);
 123
 124         dns_name_init(&name, offsets);
 125         dns_name_fromregion(&name, &region);
 126
 127         return (dns_name_towire(&name, cctx, target));
 128 }
 129
 130 static inline int
 131 compare_in_kx(ARGS_COMPARE) {
 132         dns_name_t name1;
 133         dns_name_t name2;
 134         isc_region_t region1;
 135         isc_region_t region2;
 136         int order;
 137
 138         REQUIRE(rdata1->type == rdata2->type);
 139         REQUIRE(rdata1->rdclass == rdata2->rdclass);
 140         REQUIRE(rdata1->type == 36);
 141         REQUIRE(rdata1->rdclass == 1);
 142         REQUIRE(rdata1->length != 0);
 143         REQUIRE(rdata2->length != 0);
 144
 145         order = memcmp(rdata1->data, rdata2->data, 2);
 146         if (order != 0)
 147                 return (order < 0 ? -1 : 1);
 148
 149         dns_name_init(&name1, NULL);
 150         dns_name_init(&name2, NULL);
 151
 152         dns_rdata_toregion(rdata1, &region1);
 153         dns_rdata_toregion(rdata2, &region2);
 154
 155         isc_region_consume(&region1, 2);
 156         isc_region_consume(&region2, 2);
 157
 158         dns_name_fromregion(&name1, &region1);
 159         dns_name_fromregion(&name2, &region2);
 160
 161         return (dns_name_rdatacompare(&name1, &name2));
 162 }
 163
 164 static inline isc_result_t
 165 fromstruct_in_kx(ARGS_FROMSTRUCT) {
 166         dns_rdata_in_kx_t *kx = source;
 167         isc_region_t region;
 168
 169         REQUIRE(type == 36);
 170         REQUIRE(rdclass == 1);
 171         REQUIRE(source != NULL);
 172         REQUIRE(kx->common.rdtype == type);
 173         REQUIRE(kx->common.rdclass == rdclass);
 174
 175         UNUSED(type);
 176         UNUSED(rdclass);
 177
 178         RETERR(uint16_tobuffer(kx->preference, target));
 179         dns_name_toregion(&kx->exchange, &region);
 180         return (isc_buffer_copyregion(target, &region));
 181 }
 182
 183 static inline isc_result_t
 184 tostruct_in_kx(ARGS_TOSTRUCT) {
 185         isc_region_t region;
 186         dns_rdata_in_kx_t *kx = target;
 187         dns_name_t name;
 188
 189         REQUIRE(rdata->type == 36);
 190         REQUIRE(rdata->rdclass == 1);
 191         REQUIRE(target != NULL);
 192         REQUIRE(rdata->length != 0);
 193
 194         kx->common.rdclass = rdata->rdclass;
 195         kx->common.rdtype = rdata->type;
 196         ISC_LINK_INIT(&kx->common, link);
 197
 198         dns_name_init(&name, NULL);
 199         dns_rdata_toregion(rdata, &region);
 200
 201         kx->preference = uint16_fromregion(&region);
 202         isc_region_consume(&region, 2);
 203
 204         dns_name_fromregion(&name, &region);
 205         dns_name_init(&kx->exchange, NULL);
 206         RETERR(name_duporclone(&name, mctx, &kx->exchange));
 207         kx->mctx = mctx;
 208         return (ISC_R_SUCCESS);
 209 }
 210
 211 static inline void
 212 freestruct_in_kx(ARGS_FREESTRUCT) {
 213         dns_rdata_in_kx_t *kx = source;
 214
 215         REQUIRE(source != NULL);
 216         REQUIRE(kx->common.rdclass == 1);
 217         REQUIRE(kx->common.rdtype == 36);
 218
 219         if (kx->mctx == NULL)
 220                 return;
 221
 222         dns_name_free(&kx->exchange, kx->mctx);
 223         kx->mctx = NULL;
 224 }
 225
 226 static inline isc_result_t
 227 additionaldata_in_kx(ARGS_ADDLDATA) {
 228         dns_name_t name;
 229         dns_offsets_t offsets;
 230         isc_region_t region;
 231
 232         REQUIRE(rdata->type == 36);
 233         REQUIRE(rdata->rdclass == 1);
 234
 235         dns_name_init(&name, offsets);
 236         dns_rdata_toregion(rdata, &region);
 237         isc_region_consume(&region, 2);
 238         dns_name_fromregion(&name, &region);
 239
 240         return ((add)(arg, &name, dns_rdatatype_a));
 241 }
 242
 243 static inline isc_result_t
 244 digest_in_kx(ARGS_DIGEST) {
 245         isc_region_t r1, r2;
 246         dns_name_t name;
 247
 248         REQUIRE(rdata->type == 36);
 249         REQUIRE(rdata->rdclass == 1);
 250
 251         dns_rdata_toregion(rdata, &r1);
 252         r2 = r1;
 253         isc_region_consume(&r2, 2);
 254         r1.length = 2;
 255         RETERR((digest)(arg, &r1));
 256         dns_name_init(&name, NULL);
 257         dns_name_fromregion(&name, &r2);
 258         return (dns_name_digest(&name, digest, arg));
 259 }
 260
 261 static inline isc_boolean_t
 262 checkowner_in_kx(ARGS_CHECKOWNER) {
 263
 264         REQUIRE(type == 36);
 265         REQUIRE(rdclass == 1);
 266
 267         UNUSED(name);
 268         UNUSED(type);
 269         UNUSED(rdclass);
 270         UNUSED(wildcard);
 271
 272         return (ISC_TRUE);
 273 }
 274
 275 static inline isc_boolean_t
 276 checknames_in_kx(ARGS_CHECKNAMES) {
 277
 278         REQUIRE(rdata->type == 36);
 279         REQUIRE(rdata->rdclass == 1);
 280
 281         UNUSED(rdata);
 282         UNUSED(owner);
 283         UNUSED(bad);
 284
 285         return (ISC_TRUE);
 286 }
 287
 288 #endif  /* RDATA_IN_1_KX_36_C */