contrib/bind-9.5.2/lib/dns/rdata/in_1/srv_33.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: srv_33.c,v 1.45 2007/06/19 23:47:17 tbox Exp $ */
  19
  20 /* Reviewed: Fri Mar 17 13:01:00 PST 2000 by bwelling */
  21
  22 /* RFC2782 */
  23
  24 #ifndef RDATA_IN_1_SRV_33_C
  25 #define RDATA_IN_1_SRV_33_C
  26
  27 #define RRTYPE_SRV_ATTRIBUTES (0)
  28
  29 static inline isc_result_t
  30 fromtext_in_srv(ARGS_FROMTEXT) {
  31         isc_token_t token;
  32         dns_name_t name;
  33         isc_buffer_t buffer;
  34         isc_boolean_t ok;
  35
  36         REQUIRE(type == 33);
  37         REQUIRE(rdclass == 1);
  38
  39         UNUSED(type);
  40         UNUSED(rdclass);
  41         UNUSED(callbacks);
  42
  43         /*
  44          * Priority.
  45          */
  46         RETERR(isc_lex_getmastertoken(lexer, &token, isc_tokentype_number,
  47                                       ISC_FALSE));
  48         if (token.value.as_ulong > 0xffffU)
  49                 RETTOK(ISC_R_RANGE);
  50         RETERR(uint16_tobuffer(token.value.as_ulong, target));
  51
  52         /*
  53          * Weight.
  54          */
  55         RETERR(isc_lex_getmastertoken(lexer, &token, isc_tokentype_number,
  56                                       ISC_FALSE));
  57         if (token.value.as_ulong > 0xffffU)
  58                 RETTOK(ISC_R_RANGE);
  59         RETERR(uint16_tobuffer(token.value.as_ulong, target));
  60
  61         /*
  62          * Port.
  63          */
  64         RETERR(isc_lex_getmastertoken(lexer, &token, isc_tokentype_number,
  65                                       ISC_FALSE));
  66         if (token.value.as_ulong > 0xffffU)
  67                 RETTOK(ISC_R_RANGE);
  68         RETERR(uint16_tobuffer(token.value.as_ulong, target));
  69
  70         /*
  71          * Target.
  72          */
  73         RETERR(isc_lex_getmastertoken(lexer, &token, isc_tokentype_string,
  74                                       ISC_FALSE));
  75         dns_name_init(&name, NULL);
  76         buffer_fromregion(&buffer, &token.value.as_region);
  77         origin = (origin != NULL) ? origin : dns_rootname;
  78         RETTOK(dns_name_fromtext(&name, &buffer, origin, options, target));
  79         ok = ISC_TRUE;
  80         if ((options & DNS_RDATA_CHECKNAMES) != 0)
  81                 ok = dns_name_ishostname(&name, ISC_FALSE);
  82         if (!ok && (options & DNS_RDATA_CHECKNAMESFAIL) != 0)
  83                 RETTOK(DNS_R_BADNAME);
  84         if (!ok && callbacks != NULL)
  85                 warn_badname(&name, lexer, callbacks);
  86         return (ISC_R_SUCCESS);
  87 }
  88
  89 static inline isc_result_t
  90 totext_in_srv(ARGS_TOTEXT) {
  91         isc_region_t region;
  92         dns_name_t name;
  93         dns_name_t prefix;
  94         isc_boolean_t sub;
  95         char buf[sizeof("64000")];
  96         unsigned short num;
  97
  98         REQUIRE(rdata->type == 33);
  99         REQUIRE(rdata->rdclass == 1);
 100         REQUIRE(rdata->length != 0);
 101
 102         dns_name_init(&name, NULL);
 103         dns_name_init(&prefix, NULL);
 104
 105         /*
 106          * Priority.
 107          */
 108         dns_rdata_toregion(rdata, &region);
 109         num = uint16_fromregion(&region);
 110         isc_region_consume(&region, 2);
 111         sprintf(buf, "%u", num);
 112         RETERR(str_totext(buf, target));
 113         RETERR(str_totext(" ", target));
 114
 115         /*
 116          * Weight.
 117          */
 118         num = uint16_fromregion(&region);
 119         isc_region_consume(&region, 2);
 120         sprintf(buf, "%u", num);
 121         RETERR(str_totext(buf, target));
 122         RETERR(str_totext(" ", target));
 123
 124         /*
 125          * Port.
 126          */
 127         num = uint16_fromregion(&region);
 128         isc_region_consume(&region, 2);
 129         sprintf(buf, "%u", num);
 130         RETERR(str_totext(buf, target));
 131         RETERR(str_totext(" ", target));
 132
 133         /*
 134          * Target.
 135          */
 136         dns_name_fromregion(&name, &region);
 137         sub = name_prefix(&name, tctx->origin, &prefix);
 138         return (dns_name_totext(&prefix, sub, target));
 139 }
 140
 141 static inline isc_result_t
 142 fromwire_in_srv(ARGS_FROMWIRE) {
 143         dns_name_t name;
 144         isc_region_t sr;
 145
 146         REQUIRE(type == 33);
 147         REQUIRE(rdclass == 1);
 148
 149         UNUSED(type);
 150         UNUSED(rdclass);
 151
 152         dns_decompress_setmethods(dctx, DNS_COMPRESS_NONE);
 153
 154         dns_name_init(&name, NULL);
 155
 156         /*
 157          * Priority, weight, port.
 158          */
 159         isc_buffer_activeregion(source, &sr);
 160         if (sr.length < 6)
 161                 return (ISC_R_UNEXPECTEDEND);
 162         RETERR(mem_tobuffer(target, sr.base, 6));
 163         isc_buffer_forward(source, 6);
 164
 165         /*
 166          * Target.
 167          */
 168         return (dns_name_fromwire(&name, source, dctx, options, target));
 169 }
 170
 171 static inline isc_result_t
 172 towire_in_srv(ARGS_TOWIRE) {
 173         dns_name_t name;
 174         dns_offsets_t offsets;
 175         isc_region_t sr;
 176
 177         REQUIRE(rdata->type == 33);
 178         REQUIRE(rdata->length != 0);
 179
 180         dns_compress_setmethods(cctx, DNS_COMPRESS_NONE);
 181         /*
 182          * Priority, weight, port.
 183          */
 184         dns_rdata_toregion(rdata, &sr);
 185         RETERR(mem_tobuffer(target, sr.base, 6));
 186         isc_region_consume(&sr, 6);
 187
 188         /*
 189          * Target.
 190          */
 191         dns_name_init(&name, offsets);
 192         dns_name_fromregion(&name, &sr);
 193         return (dns_name_towire(&name, cctx, target));
 194 }
 195
 196 static inline int
 197 compare_in_srv(ARGS_COMPARE) {
 198         dns_name_t name1;
 199         dns_name_t name2;
 200         isc_region_t region1;
 201         isc_region_t region2;
 202         int order;
 203
 204         REQUIRE(rdata1->type == rdata2->type);
 205         REQUIRE(rdata1->rdclass == rdata2->rdclass);
 206         REQUIRE(rdata1->type == 33);
 207         REQUIRE(rdata1->rdclass == 1);
 208         REQUIRE(rdata1->length != 0);
 209         REQUIRE(rdata2->length != 0);
 210
 211         /*
 212          * Priority, weight, port.
 213          */
 214         order = memcmp(rdata1->data, rdata2->data, 6);
 215         if (order != 0)
 216                 return (order < 0 ? -1 : 1);
 217
 218         /*
 219          * Target.
 220          */
 221         dns_name_init(&name1, NULL);
 222         dns_name_init(&name2, NULL);
 223
 224         dns_rdata_toregion(rdata1, &region1);
 225         dns_rdata_toregion(rdata2, &region2);
 226
 227         isc_region_consume(&region1, 6);
 228         isc_region_consume(&region2, 6);
 229
 230         dns_name_fromregion(&name1, &region1);
 231         dns_name_fromregion(&name2, &region2);
 232
 233         return (dns_name_rdatacompare(&name1, &name2));
 234 }
 235
 236 static inline isc_result_t
 237 fromstruct_in_srv(ARGS_FROMSTRUCT) {
 238         dns_rdata_in_srv_t *srv = source;
 239         isc_region_t region;
 240
 241         REQUIRE(type == 33);
 242         REQUIRE(rdclass == 1);
 243         REQUIRE(source != NULL);
 244         REQUIRE(srv->common.rdtype == type);
 245         REQUIRE(srv->common.rdclass == rdclass);
 246
 247         UNUSED(type);
 248         UNUSED(rdclass);
 249
 250         RETERR(uint16_tobuffer(srv->priority, target));
 251         RETERR(uint16_tobuffer(srv->weight, target));
 252         RETERR(uint16_tobuffer(srv->port, target));
 253         dns_name_toregion(&srv->target, &region);
 254         return (isc_buffer_copyregion(target, &region));
 255 }
 256
 257 static inline isc_result_t
 258 tostruct_in_srv(ARGS_TOSTRUCT) {
 259         isc_region_t region;
 260         dns_rdata_in_srv_t *srv = target;
 261         dns_name_t name;
 262
 263         REQUIRE(rdata->rdclass == 1);
 264         REQUIRE(rdata->type == 33);
 265         REQUIRE(target != NULL);
 266         REQUIRE(rdata->length != 0);
 267
 268         srv->common.rdclass = rdata->rdclass;
 269         srv->common.rdtype = rdata->type;
 270         ISC_LINK_INIT(&srv->common, link);
 271
 272         dns_name_init(&name, NULL);
 273         dns_rdata_toregion(rdata, &region);
 274         srv->priority = uint16_fromregion(&region);
 275         isc_region_consume(&region, 2);
 276         srv->weight = uint16_fromregion(&region);
 277         isc_region_consume(&region, 2);
 278         srv->port = uint16_fromregion(&region);
 279         isc_region_consume(&region, 2);
 280         dns_name_fromregion(&name, &region);
 281         dns_name_init(&srv->target, NULL);
 282         RETERR(name_duporclone(&name, mctx, &srv->target));
 283         srv->mctx = mctx;
 284         return (ISC_R_SUCCESS);
 285 }
 286
 287 static inline void
 288 freestruct_in_srv(ARGS_FREESTRUCT) {
 289         dns_rdata_in_srv_t *srv = source;
 290
 291         REQUIRE(source != NULL);
 292         REQUIRE(srv->common.rdclass == 1);
 293         REQUIRE(srv->common.rdtype == 33);
 294
 295         if (srv->mctx == NULL)
 296                 return;
 297
 298         dns_name_free(&srv->target, srv->mctx);
 299         srv->mctx = NULL;
 300 }
 301
 302 static inline isc_result_t
 303 additionaldata_in_srv(ARGS_ADDLDATA) {
 304         dns_name_t name;
 305         dns_offsets_t offsets;
 306         isc_region_t region;
 307
 308         REQUIRE(rdata->type == 33);
 309         REQUIRE(rdata->rdclass == 1);
 310
 311         dns_name_init(&name, offsets);
 312         dns_rdata_toregion(rdata, &region);
 313         isc_region_consume(&region, 6);
 314         dns_name_fromregion(&name, &region);
 315
 316         return ((add)(arg, &name, dns_rdatatype_a));
 317 }
 318
 319 static inline isc_result_t
 320 digest_in_srv(ARGS_DIGEST) {
 321         isc_region_t r1, r2;
 322         dns_name_t name;
 323
 324         REQUIRE(rdata->type == 33);
 325         REQUIRE(rdata->rdclass == 1);
 326
 327         dns_rdata_toregion(rdata, &r1);
 328         r2 = r1;
 329         isc_region_consume(&r2, 6);
 330         r1.length = 6;
 331         RETERR((digest)(arg, &r1));
 332         dns_name_init(&name, NULL);
 333         dns_name_fromregion(&name, &r2);
 334         return (dns_name_digest(&name, digest, arg));
 335 }
 336
 337 static inline isc_boolean_t
 338 checkowner_in_srv(ARGS_CHECKOWNER) {
 339
 340         REQUIRE(type == 33);
 341         REQUIRE(rdclass == 1);
 342
 343         UNUSED(name);
 344         UNUSED(type);
 345         UNUSED(rdclass);
 346         UNUSED(wildcard);
 347
 348         return (ISC_TRUE);
 349 }
 350
 351 static inline isc_boolean_t
 352 checknames_in_srv(ARGS_CHECKNAMES) {
 353         isc_region_t region;
 354         dns_name_t name;
 355
 356         REQUIRE(rdata->type == 33);
 357         REQUIRE(rdata->rdclass == 1);
 358
 359         UNUSED(owner);
 360
 361         dns_rdata_toregion(rdata, &region);
 362         isc_region_consume(&region, 6);
 363         dns_name_init(&name, NULL);
 364         dns_name_fromregion(&name, &region);
 365         if (!dns_name_ishostname(&name, ISC_FALSE)) {
 366                 if (bad != NULL)
 367                         dns_name_clone(&name, bad);
 368                 return (ISC_FALSE);
 369         }
 370         return (ISC_TRUE);
 371 }
 372
 373 #endif  /* RDATA_IN_1_SRV_33_C */