contrib/bind9/lib/dns/rdata/in_1/srv_33.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: srv_33.c,v 1.47 2009/12/04 22:06:37 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 == dns_rdatatype_srv);
  37         REQUIRE(rdclass == dns_rdataclass_in);
  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         if (origin == NULL)
  78                 origin = dns_rootname;
  79         RETTOK(dns_name_fromtext(&name, &buffer, origin, options, target));
  80         ok = ISC_TRUE;
  81         if ((options & DNS_RDATA_CHECKNAMES) != 0)
  82                 ok = dns_name_ishostname(&name, ISC_FALSE);
  83         if (!ok && (options & DNS_RDATA_CHECKNAMESFAIL) != 0)
  84                 RETTOK(DNS_R_BADNAME);
  85         if (!ok && callbacks != NULL)
  86                 warn_badname(&name, lexer, callbacks);
  87         return (ISC_R_SUCCESS);
  88 }
  89
  90 static inline isc_result_t
  91 totext_in_srv(ARGS_TOTEXT) {
  92         isc_region_t region;
  93         dns_name_t name;
  94         dns_name_t prefix;
  95         isc_boolean_t sub;
  96         char buf[sizeof("64000")];
  97         unsigned short num;
  98
  99         REQUIRE(rdata->type == dns_rdatatype_srv);
 100         REQUIRE(rdata->rdclass == dns_rdataclass_in);
 101         REQUIRE(rdata->length != 0);
 102
 103         dns_name_init(&name, NULL);
 104         dns_name_init(&prefix, NULL);
 105
 106         /*
 107          * Priority.
 108          */
 109         dns_rdata_toregion(rdata, &region);
 110         num = uint16_fromregion(&region);
 111         isc_region_consume(&region, 2);
 112         sprintf(buf, "%u", num);
 113         RETERR(str_totext(buf, target));
 114         RETERR(str_totext(" ", target));
 115
 116         /*
 117          * Weight.
 118          */
 119         num = uint16_fromregion(&region);
 120         isc_region_consume(&region, 2);
 121         sprintf(buf, "%u", num);
 122         RETERR(str_totext(buf, target));
 123         RETERR(str_totext(" ", target));
 124
 125         /*
 126          * Port.
 127          */
 128         num = uint16_fromregion(&region);
 129         isc_region_consume(&region, 2);
 130         sprintf(buf, "%u", num);
 131         RETERR(str_totext(buf, target));
 132         RETERR(str_totext(" ", target));
 133
 134         /*
 135          * Target.
 136          */
 137         dns_name_fromregion(&name, &region);
 138         sub = name_prefix(&name, tctx->origin, &prefix);
 139         return (dns_name_totext(&prefix, sub, target));
 140 }
 141
 142 static inline isc_result_t
 143 fromwire_in_srv(ARGS_FROMWIRE) {
 144         dns_name_t name;
 145         isc_region_t sr;
 146
 147         REQUIRE(type == dns_rdatatype_srv);
 148         REQUIRE(rdclass == dns_rdataclass_in);
 149
 150         UNUSED(type);
 151         UNUSED(rdclass);
 152
 153         dns_decompress_setmethods(dctx, DNS_COMPRESS_NONE);
 154
 155         dns_name_init(&name, NULL);
 156
 157         /*
 158          * Priority, weight, port.
 159          */
 160         isc_buffer_activeregion(source, &sr);
 161         if (sr.length < 6)
 162                 return (ISC_R_UNEXPECTEDEND);
 163         RETERR(mem_tobuffer(target, sr.base, 6));
 164         isc_buffer_forward(source, 6);
 165
 166         /*
 167          * Target.
 168          */
 169         return (dns_name_fromwire(&name, source, dctx, options, target));
 170 }
 171
 172 static inline isc_result_t
 173 towire_in_srv(ARGS_TOWIRE) {
 174         dns_name_t name;
 175         dns_offsets_t offsets;
 176         isc_region_t sr;
 177
 178         REQUIRE(rdata->type == dns_rdatatype_srv);
 179         REQUIRE(rdata->length != 0);
 180
 181         dns_compress_setmethods(cctx, DNS_COMPRESS_NONE);
 182         /*
 183          * Priority, weight, port.
 184          */
 185         dns_rdata_toregion(rdata, &sr);
 186         RETERR(mem_tobuffer(target, sr.base, 6));
 187         isc_region_consume(&sr, 6);
 188
 189         /*
 190          * Target.
 191          */
 192         dns_name_init(&name, offsets);
 193         dns_name_fromregion(&name, &sr);
 194         return (dns_name_towire(&name, cctx, target));
 195 }
 196
 197 static inline int
 198 compare_in_srv(ARGS_COMPARE) {
 199         dns_name_t name1;
 200         dns_name_t name2;
 201         isc_region_t region1;
 202         isc_region_t region2;
 203         int order;
 204
 205         REQUIRE(rdata1->type == rdata2->type);
 206         REQUIRE(rdata1->rdclass == rdata2->rdclass);
 207         REQUIRE(rdata1->type == dns_rdatatype_srv);
 208         REQUIRE(rdata1->rdclass == dns_rdataclass_in);
 209         REQUIRE(rdata1->length != 0);
 210         REQUIRE(rdata2->length != 0);
 211
 212         /*
 213          * Priority, weight, port.
 214          */
 215         order = memcmp(rdata1->data, rdata2->data, 6);
 216         if (order != 0)
 217                 return (order < 0 ? -1 : 1);
 218
 219         /*
 220          * Target.
 221          */
 222         dns_name_init(&name1, NULL);
 223         dns_name_init(&name2, NULL);
 224
 225         dns_rdata_toregion(rdata1, &region1);
 226         dns_rdata_toregion(rdata2, &region2);
 227
 228         isc_region_consume(&region1, 6);
 229         isc_region_consume(&region2, 6);
 230
 231         dns_name_fromregion(&name1, &region1);
 232         dns_name_fromregion(&name2, &region2);
 233
 234         return (dns_name_rdatacompare(&name1, &name2));
 235 }
 236
 237 static inline isc_result_t
 238 fromstruct_in_srv(ARGS_FROMSTRUCT) {
 239         dns_rdata_in_srv_t *srv = source;
 240         isc_region_t region;
 241
 242         REQUIRE(type == dns_rdatatype_srv);
 243         REQUIRE(rdclass == dns_rdataclass_in);
 244         REQUIRE(source != NULL);
 245         REQUIRE(srv->common.rdtype == type);
 246         REQUIRE(srv->common.rdclass == rdclass);
 247
 248         UNUSED(type);
 249         UNUSED(rdclass);
 250
 251         RETERR(uint16_tobuffer(srv->priority, target));
 252         RETERR(uint16_tobuffer(srv->weight, target));
 253         RETERR(uint16_tobuffer(srv->port, target));
 254         dns_name_toregion(&srv->target, &region);
 255         return (isc_buffer_copyregion(target, &region));
 256 }
 257
 258 static inline isc_result_t
 259 tostruct_in_srv(ARGS_TOSTRUCT) {
 260         isc_region_t region;
 261         dns_rdata_in_srv_t *srv = target;
 262         dns_name_t name;
 263
 264         REQUIRE(rdata->rdclass == dns_rdataclass_in);
 265         REQUIRE(rdata->type == dns_rdatatype_srv);
 266         REQUIRE(target != NULL);
 267         REQUIRE(rdata->length != 0);
 268
 269         srv->common.rdclass = rdata->rdclass;
 270         srv->common.rdtype = rdata->type;
 271         ISC_LINK_INIT(&srv->common, link);
 272
 273         dns_name_init(&name, NULL);
 274         dns_rdata_toregion(rdata, &region);
 275         srv->priority = uint16_fromregion(&region);
 276         isc_region_consume(&region, 2);
 277         srv->weight = uint16_fromregion(&region);
 278         isc_region_consume(&region, 2);
 279         srv->port = uint16_fromregion(&region);
 280         isc_region_consume(&region, 2);
 281         dns_name_fromregion(&name, &region);
 282         dns_name_init(&srv->target, NULL);
 283         RETERR(name_duporclone(&name, mctx, &srv->target));
 284         srv->mctx = mctx;
 285         return (ISC_R_SUCCESS);
 286 }
 287
 288 static inline void
 289 freestruct_in_srv(ARGS_FREESTRUCT) {
 290         dns_rdata_in_srv_t *srv = source;
 291
 292         REQUIRE(source != NULL);
 293         REQUIRE(srv->common.rdclass == dns_rdataclass_in);
 294         REQUIRE(srv->common.rdtype == dns_rdatatype_srv);
 295
 296         if (srv->mctx == NULL)
 297                 return;
 298
 299         dns_name_free(&srv->target, srv->mctx);
 300         srv->mctx = NULL;
 301 }
 302
 303 static inline isc_result_t
 304 additionaldata_in_srv(ARGS_ADDLDATA) {
 305         dns_name_t name;
 306         dns_offsets_t offsets;
 307         isc_region_t region;
 308
 309         REQUIRE(rdata->type == dns_rdatatype_srv);
 310         REQUIRE(rdata->rdclass == dns_rdataclass_in);
 311
 312         dns_name_init(&name, offsets);
 313         dns_rdata_toregion(rdata, &region);
 314         isc_region_consume(&region, 6);
 315         dns_name_fromregion(&name, &region);
 316
 317         return ((add)(arg, &name, dns_rdatatype_a));
 318 }
 319
 320 static inline isc_result_t
 321 digest_in_srv(ARGS_DIGEST) {
 322         isc_region_t r1, r2;
 323         dns_name_t name;
 324
 325         REQUIRE(rdata->type == dns_rdatatype_srv);
 326         REQUIRE(rdata->rdclass == dns_rdataclass_in);
 327
 328         dns_rdata_toregion(rdata, &r1);
 329         r2 = r1;
 330         isc_region_consume(&r2, 6);
 331         r1.length = 6;
 332         RETERR((digest)(arg, &r1));
 333         dns_name_init(&name, NULL);
 334         dns_name_fromregion(&name, &r2);
 335         return (dns_name_digest(&name, digest, arg));
 336 }
 337
 338 static inline isc_boolean_t
 339 checkowner_in_srv(ARGS_CHECKOWNER) {
 340
 341         REQUIRE(type == dns_rdatatype_srv);
 342         REQUIRE(rdclass == dns_rdataclass_in);
 343
 344         UNUSED(name);
 345         UNUSED(type);
 346         UNUSED(rdclass);
 347         UNUSED(wildcard);
 348
 349         return (ISC_TRUE);
 350 }
 351
 352 static inline isc_boolean_t
 353 checknames_in_srv(ARGS_CHECKNAMES) {
 354         isc_region_t region;
 355         dns_name_t name;
 356
 357         REQUIRE(rdata->type == dns_rdatatype_srv);
 358         REQUIRE(rdata->rdclass == dns_rdataclass_in);
 359
 360         UNUSED(owner);
 361
 362         dns_rdata_toregion(rdata, &region);
 363         isc_region_consume(&region, 6);
 364         dns_name_init(&name, NULL);
 365         dns_name_fromregion(&name, &region);
 366         if (!dns_name_ishostname(&name, ISC_FALSE)) {
 367                 if (bad != NULL)
 368                         dns_name_clone(&name, bad);
 369                 return (ISC_FALSE);
 370         }
 371         return (ISC_TRUE);
 372 }
 373
 374 static inline int
 375 casecompare_in_srv(ARGS_COMPARE) {
 376         return (compare_in_srv(rdata1, rdata2));
 377 }
 378
 379 #endif  /* RDATA_IN_1_SRV_33_C */