contrib/bind-9.3/lib/dns/rdata/in_1/px_26.c

   1 /*
   2  * Copyright (C) 2004  Internet Systems Consortium, Inc. ("ISC")
   3  * Copyright (C) 1999-2001, 2003  Internet Software Consortium.
   4  *
   5  * Permission to use, copy, modify, and 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 1.34.2.1.2.4 2004/03/06 08:14:18 marka Exp $ */
  19
  20 /* Reviewed: Mon Mar 20 10:44:27 PST 2000 */
  21
  22 /* RFC 2163 */
  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 == 26);
  36         REQUIRE(rdclass == 1);
  37
  38         UNUSED(type);
  39         UNUSED(rdclass);
  40         UNUSED(callbacks);
  41
  42         /*
  43          * Preference.
  44          */
  45         RETERR(isc_lex_getmastertoken(lexer, &token, isc_tokentype_number,
  46                                       ISC_FALSE));
  47         if (token.value.as_ulong > 0xffffU)
  48                 RETTOK(ISC_R_RANGE);
  49         RETERR(uint16_tobuffer(token.value.as_ulong, target));
  50
  51         /*
  52          * MAP822.
  53          */
  54         RETERR(isc_lex_getmastertoken(lexer, &token, isc_tokentype_string,
  55                                       ISC_FALSE));
  56         dns_name_init(&name, NULL);
  57         buffer_fromregion(&buffer, &token.value.as_region);
  58         origin = (origin != NULL) ? origin : dns_rootname;
  59         RETTOK(dns_name_fromtext(&name, &buffer, origin, options, target));
  60
  61         /*
  62          * MAPX400.
  63          */
  64         RETERR(isc_lex_getmastertoken(lexer, &token, isc_tokentype_string,
  65                                       ISC_FALSE));
  66         dns_name_init(&name, NULL);
  67         buffer_fromregion(&buffer, &token.value.as_region);
  68         origin = (origin != NULL) ? origin : dns_rootname;
  69         RETTOK(dns_name_fromtext(&name, &buffer, origin, options, target));
  70         return (ISC_R_SUCCESS);
  71 }
  72
  73 static inline isc_result_t
  74 totext_in_px(ARGS_TOTEXT) {
  75         isc_region_t region;
  76         dns_name_t name;
  77         dns_name_t prefix;
  78         isc_boolean_t sub;
  79         char buf[sizeof("64000")];
  80         unsigned short num;
  81
  82         REQUIRE(rdata->type == 26);
  83         REQUIRE(rdata->rdclass == 1);
  84         REQUIRE(rdata->length != 0);
  85
  86         dns_name_init(&name, NULL);
  87         dns_name_init(&prefix, NULL);
  88
  89         /*
  90          * Preference.
  91          */
  92         dns_rdata_toregion(rdata, &region);
  93         num = uint16_fromregion(&region);
  94         isc_region_consume(&region, 2);
  95         sprintf(buf, "%u", num);
  96         RETERR(str_totext(buf, target));
  97         RETERR(str_totext(" ", target));
  98
  99         /*
 100          * MAP822.
 101          */
 102         dns_name_fromregion(&name, &region);
 103         sub = name_prefix(&name, tctx->origin, &prefix);
 104         isc_region_consume(&region, name_length(&name));
 105         RETERR(dns_name_totext(&prefix, sub, target));
 106         RETERR(str_totext(" ", target));
 107
 108         /*
 109          * MAPX400.
 110          */
 111         dns_name_fromregion(&name, &region);
 112         sub = name_prefix(&name, tctx->origin, &prefix);
 113         return(dns_name_totext(&prefix, sub, target));
 114 }
 115
 116 static inline isc_result_t
 117 fromwire_in_px(ARGS_FROMWIRE) {
 118         dns_name_t name;
 119         isc_region_t sregion;
 120
 121         REQUIRE(type == 26);
 122         REQUIRE(rdclass == 1);
 123
 124         UNUSED(type);
 125         UNUSED(rdclass);
 126
 127         dns_decompress_setmethods(dctx, DNS_COMPRESS_NONE);
 128
 129         dns_name_init(&name, NULL);
 130
 131         /*
 132          * Preference.
 133          */
 134         isc_buffer_activeregion(source, &sregion);
 135         if (sregion.length < 2)
 136                 return (ISC_R_UNEXPECTEDEND);
 137         RETERR(mem_tobuffer(target, sregion.base, 2));
 138         isc_buffer_forward(source, 2);
 139
 140         /*
 141          * MAP822.
 142          */
 143         RETERR(dns_name_fromwire(&name, source, dctx, options, target));
 144
 145         /*
 146          * MAPX400.
 147          */
 148         return (dns_name_fromwire(&name, source, dctx, options, target));
 149 }
 150
 151 static inline isc_result_t
 152 towire_in_px(ARGS_TOWIRE) {
 153         dns_name_t name;
 154         dns_offsets_t offsets;
 155         isc_region_t region;
 156
 157         REQUIRE(rdata->type == 26);
 158         REQUIRE(rdata->rdclass == 1);
 159         REQUIRE(rdata->length != 0);
 160
 161         dns_compress_setmethods(cctx, DNS_COMPRESS_NONE);
 162         /*
 163          * Preference.
 164          */
 165         dns_rdata_toregion(rdata, &region);
 166         RETERR(mem_tobuffer(target, region.base, 2));
 167         isc_region_consume(&region, 2);
 168
 169         /*
 170          * MAP822.
 171          */
 172         dns_name_init(&name, offsets);
 173         dns_name_fromregion(&name, &region);
 174         RETERR(dns_name_towire(&name, cctx, target));
 175         isc_region_consume(&region, name_length(&name));
 176
 177         /*
 178          * MAPX400.
 179          */
 180         dns_name_init(&name, offsets);
 181         dns_name_fromregion(&name, &region);
 182         return (dns_name_towire(&name, cctx, target));
 183 }
 184
 185 static inline int
 186 compare_in_px(ARGS_COMPARE) {
 187         dns_name_t name1;
 188         dns_name_t name2;
 189         isc_region_t region1;
 190         isc_region_t region2;
 191         int order;
 192
 193         REQUIRE(rdata1->type == rdata2->type);
 194         REQUIRE(rdata1->rdclass == rdata2->rdclass);
 195         REQUIRE(rdata1->type == 26);
 196         REQUIRE(rdata1->rdclass == 1);
 197         REQUIRE(rdata1->length != 0);
 198         REQUIRE(rdata2->length != 0);
 199
 200         order = memcmp(rdata1->data, rdata2->data, 2);
 201         if (order != 0)
 202                 return (order < 0 ? -1 : 1);
 203
 204         dns_name_init(&name1, NULL);
 205         dns_name_init(&name2, NULL);
 206
 207         dns_rdata_toregion(rdata1, &region1);
 208         dns_rdata_toregion(rdata2, &region2);
 209
 210         isc_region_consume(&region1, 2);
 211         isc_region_consume(&region2, 2);
 212
 213         dns_name_fromregion(&name1, &region1);
 214         dns_name_fromregion(&name2, &region2);
 215
 216         order = dns_name_rdatacompare(&name1, &name2);
 217         if (order != 0)
 218                 return (order);
 219
 220         isc_region_consume(&region1, name_length(&name1));
 221         isc_region_consume(&region2, name_length(&name2));
 222
 223         dns_name_fromregion(&name1, &region1);
 224         dns_name_fromregion(&name2, &region2);
 225
 226         return (dns_name_rdatacompare(&name1, &name2));
 227 }
 228
 229 static inline isc_result_t
 230 fromstruct_in_px(ARGS_FROMSTRUCT) {
 231         dns_rdata_in_px_t *px = source;
 232         isc_region_t region;
 233
 234         REQUIRE(type == 26);
 235         REQUIRE(rdclass == 1);
 236         REQUIRE(source != NULL);
 237         REQUIRE(px->common.rdtype == type);
 238         REQUIRE(px->common.rdclass == rdclass);
 239
 240         UNUSED(type);
 241         UNUSED(rdclass);
 242
 243         RETERR(uint16_tobuffer(px->preference, target));
 244         dns_name_toregion(&px->map822, &region);
 245         RETERR(isc_buffer_copyregion(target, &region));
 246         dns_name_toregion(&px->mapx400, &region);
 247         return (isc_buffer_copyregion(target, &region));
 248 }
 249
 250 static inline isc_result_t
 251 tostruct_in_px(ARGS_TOSTRUCT) {
 252         dns_rdata_in_px_t *px = target;
 253         dns_name_t name;
 254         isc_region_t region;
 255         isc_result_t result;
 256
 257         REQUIRE(rdata->type == 26);
 258         REQUIRE(rdata->rdclass == 1);
 259         REQUIRE(target != NULL);
 260         REQUIRE(rdata->length != 0);
 261
 262         px->common.rdclass = rdata->rdclass;
 263         px->common.rdtype = rdata->type;
 264         ISC_LINK_INIT(&px->common, link);
 265
 266         dns_name_init(&name, NULL);
 267         dns_rdata_toregion(rdata, &region);
 268
 269         px->preference = uint16_fromregion(&region);
 270         isc_region_consume(&region, 2);
 271
 272         dns_name_fromregion(&name, &region);
 273
 274         dns_name_init(&px->map822, NULL);
 275         RETERR(name_duporclone(&name, mctx, &px->map822));
 276         isc_region_consume(&region, name_length(&px->map822));
 277
 278         dns_name_init(&px->mapx400, NULL);
 279         result = name_duporclone(&name, mctx, &px->mapx400);
 280         if (result != ISC_R_SUCCESS)
 281                 goto cleanup;
 282
 283         px->mctx = mctx;
 284         return (result);
 285
 286  cleanup:
 287         dns_name_free(&px->map822, mctx);
 288         return (ISC_R_NOMEMORY);
 289 }
 290
 291 static inline void
 292 freestruct_in_px(ARGS_FREESTRUCT) {
 293         dns_rdata_in_px_t *px = source;
 294
 295         REQUIRE(source != NULL);
 296         REQUIRE(px->common.rdclass == 1);
 297         REQUIRE(px->common.rdtype == 26);
 298
 299         if (px->mctx == NULL)
 300                 return;
 301
 302         dns_name_free(&px->map822, px->mctx);
 303         dns_name_free(&px->mapx400, px->mctx);
 304         px->mctx = NULL;
 305 }
 306
 307 static inline isc_result_t
 308 additionaldata_in_px(ARGS_ADDLDATA) {
 309         REQUIRE(rdata->type == 26);
 310         REQUIRE(rdata->rdclass == 1);
 311
 312         UNUSED(rdata);
 313         UNUSED(add);
 314         UNUSED(arg);
 315
 316         return (ISC_R_SUCCESS);
 317 }
 318
 319 static inline isc_result_t
 320 digest_in_px(ARGS_DIGEST) {
 321         isc_region_t r1, r2;
 322         dns_name_t name;
 323         isc_result_t result;
 324
 325         REQUIRE(rdata->type == 26);
 326         REQUIRE(rdata->rdclass == 1);
 327
 328         dns_rdata_toregion(rdata, &r1);
 329         r2 = r1;
 330         isc_region_consume(&r2, 2);
 331         r1.length = 2;
 332         result = (digest)(arg, &r1);
 333         if (result != ISC_R_SUCCESS)
 334                 return (result);
 335         dns_name_init(&name, NULL);
 336         dns_name_fromregion(&name, &r2);
 337         result = dns_name_digest(&name, digest, arg);
 338         if (result != ISC_R_SUCCESS)
 339                 return (result);
 340         isc_region_consume(&r2, name_length(&name));
 341         dns_name_init(&name, NULL);
 342         dns_name_fromregion(&name, &r2);
 343
 344         return (dns_name_digest(&name, digest, arg));
 345 }
 346
 347 static inline isc_boolean_t
 348 checkowner_in_px(ARGS_CHECKOWNER) {
 349
 350         REQUIRE(type == 26);
 351         REQUIRE(rdclass == 1);
 352
 353         UNUSED(name);
 354         UNUSED(type);
 355         UNUSED(rdclass);
 356         UNUSED(wildcard);
 357
 358         return (ISC_TRUE);
 359 }
 360
 361 static inline isc_boolean_t
 362 checknames_in_px(ARGS_CHECKNAMES) {
 363
 364         REQUIRE(rdata->type == 26);
 365         REQUIRE(rdata->rdclass == 1);
 366
 367         UNUSED(rdata);
 368         UNUSED(owner);
 369         UNUSED(bad);
 370
 371         return (ISC_TRUE);
 372 }
 373
 374 #endif  /* RDATA_IN_1_PX_26_C */