external/bsd/bind/dist/lib/dns/rdata/generic/rt_21.c

   1 /*      $NetBSD: rt_21.c,v 1.5 2014/12/10 04:37:59 christos Exp $       */
   2
   3 /*
   4  * Copyright (C) 2004, 2005, 2007, 2009, 2014  Internet Systems Consortium, Inc. ("ISC")
   5  * Copyright (C) 1999-2001, 2003  Internet Software Consortium.
   6  *
   7  * Permission to use, copy, modify, and/or distribute this software for any
   8  * purpose with or without fee is hereby granted, provided that the above
   9  * copyright notice and this permission notice appear in all copies.
  10  *
  11  * THE SOFTWARE IS PROVIDED "AS IS" AND ISC DISCLAIMS ALL WARRANTIES WITH
  12  * REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY
  13  * AND FITNESS.  IN NO EVENT SHALL ISC BE LIABLE FOR ANY SPECIAL, DIRECT,
  14  * INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM
  15  * LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE
  16  * OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
  17  * PERFORMANCE OF THIS SOFTWARE.
  18  */
  19
  20 /* Id: rt_21.c,v 1.48 2009/12/04 22:06:37 tbox Exp  */
  21
  22 /* reviewed: Thu Mar 16 15:02:31 PST 2000 by brister */
  23
  24 /* RFC1183 */
  25
  26 #ifndef RDATA_GENERIC_RT_21_C
  27 #define RDATA_GENERIC_RT_21_C
  28
  29 #define RRTYPE_RT_ATTRIBUTES (0)
  30
  31 static inline isc_result_t
  32 fromtext_rt(ARGS_FROMTEXT) {
  33         isc_token_t token;
  34         dns_name_t name;
  35         isc_buffer_t buffer;
  36         isc_boolean_t ok;
  37
  38         REQUIRE(type == 21);
  39
  40         UNUSED(type);
  41         UNUSED(rdclass);
  42         UNUSED(callbacks);
  43
  44         RETERR(isc_lex_getmastertoken(lexer, &token, isc_tokentype_number,
  45                                       ISC_FALSE));
  46         if (token.value.as_ulong > 0xffffU)
  47                 RETTOK(ISC_R_RANGE);
  48         RETERR(uint16_tobuffer(token.value.as_ulong, target));
  49
  50         RETERR(isc_lex_getmastertoken(lexer, &token, isc_tokentype_string,
  51                                       ISC_FALSE));
  52
  53         dns_name_init(&name, NULL);
  54         buffer_fromregion(&buffer, &token.value.as_region);
  55         origin = (origin != NULL) ? origin : dns_rootname;
  56         RETTOK(dns_name_fromtext(&name, &buffer, origin, options, target));
  57         ok = ISC_TRUE;
  58         if ((options & DNS_RDATA_CHECKNAMES) != 0)
  59                 ok = dns_name_ishostname(&name, ISC_FALSE);
  60         if (!ok && (options & DNS_RDATA_CHECKNAMESFAIL) != 0)
  61                 RETTOK(DNS_R_BADNAME);
  62         if (!ok && callbacks != NULL)
  63                 warn_badname(&name, lexer, callbacks);
  64         return (ISC_R_SUCCESS);
  65 }
  66
  67 static inline isc_result_t
  68 totext_rt(ARGS_TOTEXT) {
  69         isc_region_t region;
  70         dns_name_t name;
  71         dns_name_t prefix;
  72         isc_boolean_t sub;
  73         char buf[sizeof("64000")];
  74         unsigned short num;
  75
  76         REQUIRE(rdata->type == 21);
  77         REQUIRE(rdata->length != 0);
  78
  79         dns_name_init(&name, NULL);
  80         dns_name_init(&prefix, NULL);
  81
  82         dns_rdata_toregion(rdata, &region);
  83         num = uint16_fromregion(&region);
  84         isc_region_consume(&region, 2);
  85         sprintf(buf, "%u", num);
  86         RETERR(str_totext(buf, target));
  87         RETERR(str_totext(" ", target));
  88         dns_name_fromregion(&name, &region);
  89         sub = name_prefix(&name, tctx->origin, &prefix);
  90         return (dns_name_totext(&prefix, sub, target));
  91 }
  92
  93 static inline isc_result_t
  94 fromwire_rt(ARGS_FROMWIRE) {
  95         dns_name_t name;
  96         isc_region_t sregion;
  97         isc_region_t tregion;
  98
  99         REQUIRE(type == 21);
 100
 101         UNUSED(type);
 102         UNUSED(rdclass);
 103
 104         dns_decompress_setmethods(dctx, DNS_COMPRESS_NONE);
 105
 106         dns_name_init(&name, NULL);
 107
 108         isc_buffer_activeregion(source, &sregion);
 109         isc_buffer_availableregion(target, &tregion);
 110         if (tregion.length < 2)
 111                 return (ISC_R_NOSPACE);
 112         if (sregion.length < 2)
 113                 return (ISC_R_UNEXPECTEDEND);
 114         memmove(tregion.base, sregion.base, 2);
 115         isc_buffer_forward(source, 2);
 116         isc_buffer_add(target, 2);
 117         return (dns_name_fromwire(&name, source, dctx, options, target));
 118 }
 119
 120 static inline isc_result_t
 121 towire_rt(ARGS_TOWIRE) {
 122         dns_name_t name;
 123         dns_offsets_t offsets;
 124         isc_region_t region;
 125         isc_region_t tr;
 126
 127         REQUIRE(rdata->type == 21);
 128         REQUIRE(rdata->length != 0);
 129
 130         dns_compress_setmethods(cctx, DNS_COMPRESS_NONE);
 131         isc_buffer_availableregion(target, &tr);
 132         dns_rdata_toregion(rdata, &region);
 133         if (tr.length < 2)
 134                 return (ISC_R_NOSPACE);
 135         memmove(tr.base, region.base, 2);
 136         isc_region_consume(&region, 2);
 137         isc_buffer_add(target, 2);
 138
 139         dns_name_init(&name, offsets);
 140         dns_name_fromregion(&name, &region);
 141
 142         return (dns_name_towire(&name, cctx, target));
 143 }
 144
 145 static inline int
 146 compare_rt(ARGS_COMPARE) {
 147         dns_name_t name1;
 148         dns_name_t name2;
 149         isc_region_t region1;
 150         isc_region_t region2;
 151         int order;
 152
 153         REQUIRE(rdata1->type == rdata2->type);
 154         REQUIRE(rdata1->rdclass == rdata2->rdclass);
 155         REQUIRE(rdata1->type == 21);
 156         REQUIRE(rdata1->length != 0);
 157         REQUIRE(rdata2->length != 0);
 158
 159         order = memcmp(rdata1->data, rdata2->data, 2);
 160         if (order != 0)
 161                 return (order < 0 ? -1 : 1);
 162
 163         dns_name_init(&name1, NULL);
 164         dns_name_init(&name2, NULL);
 165
 166         dns_rdata_toregion(rdata1, &region1);
 167         dns_rdata_toregion(rdata2, &region2);
 168
 169         isc_region_consume(&region1, 2);
 170         isc_region_consume(&region2, 2);
 171
 172         dns_name_fromregion(&name1, &region1);
 173         dns_name_fromregion(&name2, &region2);
 174
 175         return (dns_name_rdatacompare(&name1, &name2));
 176 }
 177
 178 static inline isc_result_t
 179 fromstruct_rt(ARGS_FROMSTRUCT) {
 180         dns_rdata_rt_t *rt = source;
 181         isc_region_t region;
 182
 183         REQUIRE(type == 21);
 184         REQUIRE(source != NULL);
 185         REQUIRE(rt->common.rdtype == type);
 186         REQUIRE(rt->common.rdclass == rdclass);
 187
 188         UNUSED(type);
 189         UNUSED(rdclass);
 190
 191         RETERR(uint16_tobuffer(rt->preference, target));
 192         dns_name_toregion(&rt->host, &region);
 193         return (isc_buffer_copyregion(target, &region));
 194 }
 195
 196 static inline isc_result_t
 197 tostruct_rt(ARGS_TOSTRUCT) {
 198         isc_region_t region;
 199         dns_rdata_rt_t *rt = target;
 200         dns_name_t name;
 201
 202         REQUIRE(rdata->type == 21);
 203         REQUIRE(target != NULL);
 204         REQUIRE(rdata->length != 0);
 205
 206         rt->common.rdclass = rdata->rdclass;
 207         rt->common.rdtype = rdata->type;
 208         ISC_LINK_INIT(&rt->common, link);
 209
 210         dns_name_init(&name, NULL);
 211         dns_rdata_toregion(rdata, &region);
 212         rt->preference = uint16_fromregion(&region);
 213         isc_region_consume(&region, 2);
 214         dns_name_fromregion(&name, &region);
 215         dns_name_init(&rt->host, NULL);
 216         RETERR(name_duporclone(&name, mctx, &rt->host));
 217
 218         rt->mctx = mctx;
 219         return (ISC_R_SUCCESS);
 220 }
 221
 222 static inline void
 223 freestruct_rt(ARGS_FREESTRUCT) {
 224         dns_rdata_rt_t *rt = source;
 225
 226         REQUIRE(source != NULL);
 227         REQUIRE(rt->common.rdtype == 21);
 228
 229         if (rt->mctx == NULL)
 230                 return;
 231
 232         dns_name_free(&rt->host, rt->mctx);
 233         rt->mctx = NULL;
 234 }
 235
 236 static inline isc_result_t
 237 additionaldata_rt(ARGS_ADDLDATA) {
 238         dns_name_t name;
 239         dns_offsets_t offsets;
 240         isc_region_t region;
 241         isc_result_t result;
 242
 243         REQUIRE(rdata->type == 21);
 244
 245         dns_name_init(&name, offsets);
 246         dns_rdata_toregion(rdata, &region);
 247         isc_region_consume(&region, 2);
 248         dns_name_fromregion(&name, &region);
 249
 250         result = (add)(arg, &name, dns_rdatatype_x25);
 251         if (result != ISC_R_SUCCESS)
 252                 return (result);
 253         result = (add)(arg, &name, dns_rdatatype_isdn);
 254         if (result != ISC_R_SUCCESS)
 255                 return (result);
 256         return ((add)(arg, &name, dns_rdatatype_a));
 257 }
 258
 259 static inline isc_result_t
 260 digest_rt(ARGS_DIGEST) {
 261         isc_region_t r1, r2;
 262         isc_result_t result;
 263         dns_name_t name;
 264
 265         REQUIRE(rdata->type == 21);
 266
 267         dns_rdata_toregion(rdata, &r1);
 268         r2 = r1;
 269         isc_region_consume(&r2, 2);
 270         r1.length = 2;
 271         result = (digest)(arg, &r1);
 272         if (result != ISC_R_SUCCESS)
 273                 return (result);
 274         dns_name_init(&name, NULL);
 275         dns_name_fromregion(&name, &r2);
 276         return (dns_name_digest(&name, digest, arg));
 277 }
 278
 279 static inline isc_boolean_t
 280 checkowner_rt(ARGS_CHECKOWNER) {
 281
 282         REQUIRE(type == 21);
 283
 284         UNUSED(name);
 285         UNUSED(type);
 286         UNUSED(rdclass);
 287         UNUSED(wildcard);
 288
 289         return (ISC_TRUE);
 290 }
 291
 292 static inline isc_boolean_t
 293 checknames_rt(ARGS_CHECKNAMES) {
 294         isc_region_t region;
 295         dns_name_t name;
 296
 297         REQUIRE(rdata->type == 21);
 298
 299         UNUSED(owner);
 300
 301         dns_rdata_toregion(rdata, &region);
 302         isc_region_consume(&region, 2);
 303         dns_name_init(&name, NULL);
 304         dns_name_fromregion(&name, &region);
 305         if (!dns_name_ishostname(&name, ISC_FALSE)) {
 306                 if (bad != NULL)
 307                         dns_name_clone(&name, bad);
 308                 return (ISC_FALSE);
 309         }
 310         return (ISC_TRUE);
 311 }
 312
 313 static inline int
 314 casecompare_rt(ARGS_COMPARE) {
 315         return (compare_rt(rdata1, rdata2));
 316 }
 317
 318 #endif  /* RDATA_GENERIC_RT_21_C */