contrib/bind9/lib/dns/rdata/in_1/px_26.c

   1 /*
   2  * Copyright (C) 2004, 2005, 2007, 2009, 2015  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: px_26.c,v 1.45 2009/12/04 22:06:37 tbox Exp $ */
  19
  20 /* Reviewed: Mon Mar 20 10:44:27 PST 2000 */
  21
  22 /* RFC2163 */
  23
  24 #ifndef RDATA_IN_1_PX_26_C
  25 #define RDATA_IN_1_PX_26_C
  26
  27 #define RRTYPE_PX_ATTRIBUTES (0)
  28
  29 static inline isc_result_t
  30 fromtext_in_px(ARGS_FROMTEXT) {
  31         isc_token_t token;
  32         dns_name_t name;
  33         isc_buffer_t buffer;
  34
  35         REQUIRE(type == dns_rdatatype_px);
  36         REQUIRE(rdclass == dns_rdataclass_in);
  37
  38         UNUSED(type);
  39         UNUSED(rdclass);
  40         UNUSED(callbacks);
  41
  42         if (origin == NULL)
  43                 origin = dns_rootname;
  44
  45         /*
  46          * Preference.
  47          */
  48         RETERR(isc_lex_getmastertoken(lexer, &token, isc_tokentype_number,
  49                                       ISC_FALSE));
  50         if (token.value.as_ulong > 0xffffU)
  51                 RETTOK(ISC_R_RANGE);
  52         RETERR(uint16_tobuffer(token.value.as_ulong, target));
  53
  54         /*
  55          * MAP822.
  56          */
  57         RETERR(isc_lex_getmastertoken(lexer, &token, isc_tokentype_string,
  58                                       ISC_FALSE));
  59         dns_name_init(&name, NULL);
  60         buffer_fromregion(&buffer, &token.value.as_region);
  61         RETTOK(dns_name_fromtext(&name, &buffer, origin, options, target));
  62
  63         /*
  64          * MAPX400.
  65          */
  66         RETERR(isc_lex_getmastertoken(lexer, &token, isc_tokentype_string,
  67                                       ISC_FALSE));
  68         dns_name_init(&name, NULL);
  69         buffer_fromregion(&buffer, &token.value.as_region);
  70         RETTOK(dns_name_fromtext(&name, &buffer, origin, options, target));
  71         return (ISC_R_SUCCESS);
  72 }
  73
  74 static inline isc_result_t
  75 totext_in_px(ARGS_TOTEXT) {
  76         isc_region_t region;
  77         dns_name_t name;
  78         dns_name_t prefix;
  79         isc_boolean_t sub;
  80         char buf[sizeof("64000")];
  81         unsigned short num;
  82
  83         REQUIRE(rdata->type == dns_rdatatype_px);
  84         REQUIRE(rdata->rdclass == dns_rdataclass_in);
  85         REQUIRE(rdata->length != 0);
  86
  87         dns_name_init(&name, NULL);
  88         dns_name_init(&prefix, NULL);
  89
  90         /*
  91          * Preference.
  92          */
  93         dns_rdata_toregion(rdata, &region);
  94         num = uint16_fromregion(&region);
  95         isc_region_consume(&region, 2);
  96         sprintf(buf, "%u", num);
  97         RETERR(str_totext(buf, target));
  98         RETERR(str_totext(" ", target));
  99
 100         /*
 101          * MAP822.
 102          */
 103         dns_name_fromregion(&name, &region);
 104         sub = name_prefix(&name, tctx->origin, &prefix);
 105         isc_region_consume(&region, name_length(&name));
 106         RETERR(dns_name_totext(&prefix, sub, target));
 107         RETERR(str_totext(" ", target));
 108
 109         /*
 110          * MAPX400.
 111          */
 112         dns_name_fromregion(&name, &region);
 113         sub = name_prefix(&name, tctx->origin, &prefix);
 114         return(dns_name_totext(&prefix, sub, target));
 115 }
 116
 117 static inline isc_result_t
 118 fromwire_in_px(ARGS_FROMWIRE) {
 119         dns_name_t name;
 120         isc_region_t sregion;
 121
 122         REQUIRE(type == dns_rdatatype_px);
 123         REQUIRE(rdclass == dns_rdataclass_in);
 124
 125         UNUSED(type);
 126         UNUSED(rdclass);
 127
 128         dns_decompress_setmethods(dctx, DNS_COMPRESS_NONE);
 129
 130         dns_name_init(&name, NULL);
 131
 132         /*
 133          * Preference.
 134          */
 135         isc_buffer_activeregion(source, &sregion);
 136         if (sregion.length < 2)
 137                 return (ISC_R_UNEXPECTEDEND);
 138         RETERR(mem_tobuffer(target, sregion.base, 2));
 139         isc_buffer_forward(source, 2);
 140
 141         /*
 142          * MAP822.
 143          */
 144         RETERR(dns_name_fromwire(&name, source, dctx, options, target));
 145
 146         /*
 147          * MAPX400.
 148          */
 149         return (dns_name_fromwire(&name, source, dctx, options, target));
 150 }
 151
 152 static inline isc_result_t
 153 towire_in_px(ARGS_TOWIRE) {
 154         dns_name_t name;
 155         dns_offsets_t offsets;
 156         isc_region_t region;
 157
 158         REQUIRE(rdata->type == dns_rdatatype_px);
 159         REQUIRE(rdata->rdclass == dns_rdataclass_in);
 160         REQUIRE(rdata->length != 0);
 161
 162         dns_compress_setmethods(cctx, DNS_COMPRESS_NONE);
 163         /*
 164          * Preference.
 165          */
 166         dns_rdata_toregion(rdata, &region);
 167         RETERR(mem_tobuffer(target, region.base, 2));
 168         isc_region_consume(&region, 2);
 169
 170         /*
 171          * MAP822.
 172          */
 173         dns_name_init(&name, offsets);
 174         dns_name_fromregion(&name, &region);
 175         RETERR(dns_name_towire(&name, cctx, target));
 176         isc_region_consume(&region, name_length(&name));
 177
 178         /*
 179          * MAPX400.
 180          */
 181         dns_name_init(&name, offsets);
 182         dns_name_fromregion(&name, &region);
 183         return (dns_name_towire(&name, cctx, target));
 184 }
 185
 186 static inline int
 187 compare_in_px(ARGS_COMPARE) {
 188         dns_name_t name1;
 189         dns_name_t name2;
 190         isc_region_t region1;
 191         isc_region_t region2;
 192         int order;
 193
 194         REQUIRE(rdata1->type == rdata2->type);
 195         REQUIRE(rdata1->rdclass == rdata2->rdclass);
 196         REQUIRE(rdata1->type == dns_rdatatype_px);
 197         REQUIRE(rdata1->rdclass == dns_rdataclass_in);
 198         REQUIRE(rdata1->length != 0);
 199         REQUIRE(rdata2->length != 0);
 200
 201         order = memcmp(rdata1->data, rdata2->data, 2);
 202         if (order != 0)
 203                 return (order < 0 ? -1 : 1);
 204
 205         dns_name_init(&name1, NULL);
 206         dns_name_init(&name2, NULL);
 207
 208         dns_rdata_toregion(rdata1, &region1);
 209         dns_rdata_toregion(rdata2, &region2);
 210
 211         isc_region_consume(&region1, 2);
 212         isc_region_consume(&region2, 2);
 213
 214         dns_name_fromregion(&name1, &region1);
 215         dns_name_fromregion(&name2, &region2);
 216
 217         order = dns_name_rdatacompare(&name1, &name2);
 218         if (order != 0)
 219                 return (order);
 220
 221         isc_region_consume(&region1, name_length(&name1));
 222         isc_region_consume(&region2, name_length(&name2));
 223
 224         dns_name_fromregion(&name1, &region1);
 225         dns_name_fromregion(&name2, &region2);
 226
 227         return (dns_name_rdatacompare(&name1, &name2));
 228 }
 229
 230 static inline isc_result_t
 231 fromstruct_in_px(ARGS_FROMSTRUCT) {
 232         dns_rdata_in_px_t *px = source;
 233         isc_region_t region;
 234
 235         REQUIRE(type == dns_rdatatype_px);
 236         REQUIRE(rdclass == dns_rdataclass_in);
 237         REQUIRE(source != NULL);
 238         REQUIRE(px->common.rdtype == type);
 239         REQUIRE(px->common.rdclass == rdclass);
 240
 241         UNUSED(type);
 242         UNUSED(rdclass);
 243
 244         RETERR(uint16_tobuffer(px->preference, target));
 245         dns_name_toregion(&px->map822, &region);
 246         RETERR(isc_buffer_copyregion(target, &region));
 247         dns_name_toregion(&px->mapx400, &region);
 248         return (isc_buffer_copyregion(target, &region));
 249 }
 250
 251 static inline isc_result_t
 252 tostruct_in_px(ARGS_TOSTRUCT) {
 253         dns_rdata_in_px_t *px = target;
 254         dns_name_t name;
 255         isc_region_t region;
 256         isc_result_t result;
 257
 258         REQUIRE(rdata->type == dns_rdatatype_px);
 259         REQUIRE(rdata->rdclass == dns_rdataclass_in);
 260         REQUIRE(target != NULL);
 261         REQUIRE(rdata->length != 0);
 262
 263         px->common.rdclass = rdata->rdclass;
 264         px->common.rdtype = rdata->type;
 265         ISC_LINK_INIT(&px->common, link);
 266
 267         dns_name_init(&name, NULL);
 268         dns_rdata_toregion(rdata, &region);
 269
 270         px->preference = uint16_fromregion(&region);
 271         isc_region_consume(&region, 2);
 272
 273         dns_name_fromregion(&name, &region);
 274
 275         dns_name_init(&px->map822, NULL);
 276         RETERR(name_duporclone(&name, mctx, &px->map822));
 277         isc_region_consume(&region, name_length(&px->map822));
 278
 279         dns_name_init(&px->mapx400, NULL);
 280         result = name_duporclone(&name, mctx, &px->mapx400);
 281         if (result != ISC_R_SUCCESS)
 282                 goto cleanup;
 283
 284         px->mctx = mctx;
 285         return (result);
 286
 287  cleanup:
 288         dns_name_free(&px->map822, mctx);
 289         return (ISC_R_NOMEMORY);
 290 }
 291
 292 static inline void
 293 freestruct_in_px(ARGS_FREESTRUCT) {
 294         dns_rdata_in_px_t *px = source;
 295
 296         REQUIRE(source != NULL);
 297         REQUIRE(px->common.rdclass == dns_rdataclass_in);
 298         REQUIRE(px->common.rdtype == dns_rdatatype_px);
 299
 300         if (px->mctx == NULL)
 301                 return;
 302
 303         dns_name_free(&px->map822, px->mctx);
 304         dns_name_free(&px->mapx400, px->mctx);
 305         px->mctx = NULL;
 306 }
 307
 308 static inline isc_result_t
 309 additionaldata_in_px(ARGS_ADDLDATA) {
 310         REQUIRE(rdata->type == dns_rdatatype_px);
 311         REQUIRE(rdata->rdclass == dns_rdataclass_in);
 312
 313         UNUSED(rdata);
 314         UNUSED(add);
 315         UNUSED(arg);
 316
 317         return (ISC_R_SUCCESS);
 318 }
 319
 320 static inline isc_result_t
 321 digest_in_px(ARGS_DIGEST) {
 322         isc_region_t r1, r2;
 323         dns_name_t name;
 324         isc_result_t result;
 325
 326         REQUIRE(rdata->type == dns_rdatatype_px);
 327         REQUIRE(rdata->rdclass == dns_rdataclass_in);
 328
 329         dns_rdata_toregion(rdata, &r1);
 330         r2 = r1;
 331         isc_region_consume(&r2, 2);
 332         r1.length = 2;
 333         result = (digest)(arg, &r1);
 334         if (result != ISC_R_SUCCESS)
 335                 return (result);
 336         dns_name_init(&name, NULL);
 337         dns_name_fromregion(&name, &r2);
 338         result = dns_name_digest(&name, digest, arg);
 339         if (result != ISC_R_SUCCESS)
 340                 return (result);
 341         isc_region_consume(&r2, name_length(&name));
 342         dns_name_init(&name, NULL);
 343         dns_name_fromregion(&name, &r2);
 344
 345         return (dns_name_digest(&name, digest, arg));
 346 }
 347
 348 static inline isc_boolean_t
 349 checkowner_in_px(ARGS_CHECKOWNER) {
 350
 351         REQUIRE(type == dns_rdatatype_px);
 352         REQUIRE(rdclass == dns_rdataclass_in);
 353
 354         UNUSED(name);
 355         UNUSED(type);
 356         UNUSED(rdclass);
 357         UNUSED(wildcard);
 358
 359         return (ISC_TRUE);
 360 }
 361
 362 static inline isc_boolean_t
 363 checknames_in_px(ARGS_CHECKNAMES) {
 364
 365         REQUIRE(rdata->type == dns_rdatatype_px);
 366         REQUIRE(rdata->rdclass == dns_rdataclass_in);
 367
 368         UNUSED(rdata);
 369         UNUSED(owner);
 370         UNUSED(bad);
 371
 372         return (ISC_TRUE);
 373 }
 374
 375 static inline int
 376 casecompare_in_px(ARGS_COMPARE) {
 377         return (compare_in_px(rdata1, rdata2));
 378 }
 379
 380 #endif  /* RDATA_IN_1_PX_26_C */