contrib/bind-9.2.4rc7/lib/dns/rdata/in_1/srv_33.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: srv_33.c,v 1.36.2.3 2004/03/09 06:11:38 marka Exp $ */
  19
  20 /* Reviewed: Fri Mar 17 13:01:00 PST 2000 by bwelling */
  21
  22 /* RFC 2782 */
  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
  35         REQUIRE(type == 33);
  36         REQUIRE(rdclass == 1);
  37
  38         UNUSED(type);
  39         UNUSED(rdclass);
  40         UNUSED(callbacks);
  41
  42         /*
  43          * Priority.
  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          * Weight.
  53          */
  54         RETERR(isc_lex_getmastertoken(lexer, &token, isc_tokentype_number,
  55                                       ISC_FALSE));
  56         if (token.value.as_ulong > 0xffffU)
  57                 RETTOK(ISC_R_RANGE);
  58         RETERR(uint16_tobuffer(token.value.as_ulong, target));
  59
  60         /*
  61          * Port.
  62          */
  63         RETERR(isc_lex_getmastertoken(lexer, &token, isc_tokentype_number,
  64                                       ISC_FALSE));
  65         if (token.value.as_ulong > 0xffffU)
  66                 RETTOK(ISC_R_RANGE);
  67         RETERR(uint16_tobuffer(token.value.as_ulong, target));
  68
  69         /*
  70          * Target.
  71          */
  72         RETERR(isc_lex_getmastertoken(lexer, &token, isc_tokentype_string,
  73                                       ISC_FALSE));
  74         dns_name_init(&name, NULL);
  75         buffer_fromregion(&buffer, &token.value.as_region);
  76         origin = (origin != NULL) ? origin : dns_rootname;
  77         RETTOK(dns_name_fromtext(&name, &buffer, origin, downcase, target));
  78         return (ISC_R_SUCCESS);
  79 }
  80
  81 static inline isc_result_t
  82 totext_in_srv(ARGS_TOTEXT) {
  83         isc_region_t region;
  84         dns_name_t name;
  85         dns_name_t prefix;
  86         isc_boolean_t sub;
  87         char buf[sizeof "64000"];
  88         unsigned short num;
  89
  90         REQUIRE(rdata->type == 33);
  91         REQUIRE(rdata->rdclass == 1);
  92         REQUIRE(rdata->length != 0);
  93
  94         dns_name_init(&name, NULL);
  95         dns_name_init(&prefix, NULL);
  96
  97         /*
  98          * Priority.
  99          */
 100         dns_rdata_toregion(rdata, &region);
 101         num = uint16_fromregion(&region);
 102         isc_region_consume(&region, 2);
 103         sprintf(buf, "%u", num);
 104         RETERR(str_totext(buf, target));
 105         RETERR(str_totext(" ", target));
 106
 107         /*
 108          * Weight.
 109          */
 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          * Port.
 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          * Target.
 127          */
 128         dns_name_fromregion(&name, &region);
 129         sub = name_prefix(&name, tctx->origin, &prefix);
 130         return (dns_name_totext(&prefix, sub, target));
 131 }
 132
 133 static inline isc_result_t
 134 fromwire_in_srv(ARGS_FROMWIRE) {
 135         dns_name_t name;
 136         isc_region_t sr;
 137
 138         REQUIRE(type == 33);
 139         REQUIRE(rdclass == 1);
 140
 141         UNUSED(type);
 142         UNUSED(rdclass);
 143
 144         dns_decompress_setmethods(dctx, DNS_COMPRESS_NONE);
 145
 146         dns_name_init(&name, NULL);
 147
 148         /*
 149          * Priority, weight, port.
 150          */
 151         isc_buffer_activeregion(source, &sr);
 152         if (sr.length < 6)
 153                 return (ISC_R_UNEXPECTEDEND);
 154         RETERR(mem_tobuffer(target, sr.base, 6));
 155         isc_buffer_forward(source, 6);
 156
 157         /*
 158          * Target.
 159          */
 160         return (dns_name_fromwire(&name, source, dctx, downcase, target));
 161 }
 162
 163 static inline isc_result_t
 164 towire_in_srv(ARGS_TOWIRE) {
 165         dns_name_t name;
 166         dns_offsets_t offsets;
 167         isc_region_t sr;
 168
 169         REQUIRE(rdata->type == 33);
 170         REQUIRE(rdata->length != 0);
 171
 172         dns_compress_setmethods(cctx, DNS_COMPRESS_NONE);
 173         /*
 174          * Priority, weight, port.
 175          */
 176         dns_rdata_toregion(rdata, &sr);
 177         RETERR(mem_tobuffer(target, sr.base, 6));
 178         isc_region_consume(&sr, 6);
 179
 180         /*
 181          * Target.
 182          */
 183         dns_name_init(&name, offsets);
 184         dns_name_fromregion(&name, &sr);
 185         return (dns_name_towire(&name, cctx, target));
 186 }
 187
 188 static inline int
 189 compare_in_srv(ARGS_COMPARE) {
 190         dns_name_t name1;
 191         dns_name_t name2;
 192         isc_region_t region1;
 193         isc_region_t region2;
 194         int order;
 195
 196         REQUIRE(rdata1->type == rdata2->type);
 197         REQUIRE(rdata1->rdclass == rdata2->rdclass);
 198         REQUIRE(rdata1->type == 33);
 199         REQUIRE(rdata1->rdclass == 1);
 200         REQUIRE(rdata1->length != 0);
 201         REQUIRE(rdata2->length != 0);
 202
 203         /*
 204          * Priority, weight, port.
 205          */
 206         order = memcmp(rdata1->data, rdata2->data, 6);
 207         if (order != 0)
 208                 return (order < 0 ? -1 : 1);
 209
 210         /*
 211          * Target.
 212          */
 213         dns_name_init(&name1, NULL);
 214         dns_name_init(&name2, NULL);
 215
 216         dns_rdata_toregion(rdata1, &region1);
 217         dns_rdata_toregion(rdata2, &region2);
 218
 219         isc_region_consume(&region1, 6);
 220         isc_region_consume(&region2, 6);
 221
 222         dns_name_fromregion(&name1, &region1);
 223         dns_name_fromregion(&name2, &region2);
 224
 225         return (dns_name_rdatacompare(&name1, &name2));
 226 }
 227
 228 static inline isc_result_t
 229 fromstruct_in_srv(ARGS_FROMSTRUCT) {
 230         dns_rdata_in_srv_t *srv = source;
 231         isc_region_t region;
 232
 233         REQUIRE(type == 33);
 234         REQUIRE(rdclass == 1);
 235         REQUIRE(source != NULL);
 236         REQUIRE(srv->common.rdtype == type);
 237         REQUIRE(srv->common.rdclass == rdclass);
 238
 239         UNUSED(type);
 240         UNUSED(rdclass);
 241
 242         RETERR(uint16_tobuffer(srv->priority, target));
 243         RETERR(uint16_tobuffer(srv->weight, target));
 244         RETERR(uint16_tobuffer(srv->port, target));
 245         dns_name_toregion(&srv->target, &region);
 246         return (isc_buffer_copyregion(target, &region));
 247 }
 248
 249 static inline isc_result_t
 250 tostruct_in_srv(ARGS_TOSTRUCT) {
 251         isc_region_t region;
 252         dns_rdata_in_srv_t *srv = target;
 253         dns_name_t name;
 254
 255         REQUIRE(rdata->rdclass == 1);
 256         REQUIRE(rdata->type == 33);
 257         REQUIRE(target != NULL);
 258         REQUIRE(rdata->length != 0);
 259
 260         srv->common.rdclass = rdata->rdclass;
 261         srv->common.rdtype = rdata->type;
 262         ISC_LINK_INIT(&srv->common, link);
 263
 264         dns_name_init(&name, NULL);
 265         dns_rdata_toregion(rdata, &region);
 266         srv->priority = uint16_fromregion(&region);
 267         isc_region_consume(&region, 2);
 268         srv->weight = uint16_fromregion(&region);
 269         isc_region_consume(&region, 2);
 270         srv->port = uint16_fromregion(&region);
 271         isc_region_consume(&region, 2);
 272         dns_name_fromregion(&name, &region);
 273         dns_name_init(&srv->target, NULL);
 274         RETERR(name_duporclone(&name, mctx, &srv->target));
 275         srv->mctx = mctx;
 276         return (ISC_R_SUCCESS);
 277 }
 278
 279 static inline void
 280 freestruct_in_srv(ARGS_FREESTRUCT) {
 281         dns_rdata_in_srv_t *srv = source;
 282
 283         REQUIRE(source != NULL);
 284         REQUIRE(srv->common.rdclass == 1);
 285         REQUIRE(srv->common.rdtype == 33);
 286
 287         if (srv->mctx == NULL)
 288                 return;
 289
 290         dns_name_free(&srv->target, srv->mctx);
 291         srv->mctx = NULL;
 292 }
 293
 294 static inline isc_result_t
 295 additionaldata_in_srv(ARGS_ADDLDATA) {
 296         dns_name_t name;
 297         dns_offsets_t offsets;
 298         isc_region_t region;
 299
 300         REQUIRE(rdata->type == 33);
 301         REQUIRE(rdata->rdclass == 1);
 302
 303         dns_name_init(&name, offsets);
 304         dns_rdata_toregion(rdata, &region);
 305         isc_region_consume(&region, 6);
 306         dns_name_fromregion(&name, &region);
 307
 308         return ((add)(arg, &name, dns_rdatatype_a));
 309 }
 310
 311 static inline isc_result_t
 312 digest_in_srv(ARGS_DIGEST) {
 313         isc_region_t r1, r2;
 314         dns_name_t name;
 315
 316         REQUIRE(rdata->type == 33);
 317         REQUIRE(rdata->rdclass == 1);
 318
 319         dns_rdata_toregion(rdata, &r1);
 320         r2 = r1;
 321         isc_region_consume(&r2, 6);
 322         r1.length = 6;
 323         RETERR((digest)(arg, &r1));
 324         dns_name_init(&name, NULL);
 325         dns_name_fromregion(&name, &r2);
 326         return (dns_name_digest(&name, digest, arg));
 327 }
 328
 329 #endif  /* RDATA_IN_1_SRV_33_C */