contrib/bind-9.5.2/lib/dns/rdata/generic/rt_21.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: rt_21.c,v 1.46 2007/06/19 23:47:17 tbox Exp $ */
  19
  20 /* reviewed: Thu Mar 16 15:02:31 PST 2000 by brister */
  21
  22 /* RFC1183 */
  23
  24 #ifndef RDATA_GENERIC_RT_21_C
  25 #define RDATA_GENERIC_RT_21_C
  26
  27 #define RRTYPE_RT_ATTRIBUTES (0)
  28
  29 static inline isc_result_t
  30 fromtext_rt(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 == 21);
  37
  38         UNUSED(type);
  39         UNUSED(rdclass);
  40         UNUSED(callbacks);
  41
  42         RETERR(isc_lex_getmastertoken(lexer, &token, isc_tokentype_number,
  43                                       ISC_FALSE));
  44         if (token.value.as_ulong > 0xffffU)
  45                 RETTOK(ISC_R_RANGE);
  46         RETERR(uint16_tobuffer(token.value.as_ulong, target));
  47
  48         RETERR(isc_lex_getmastertoken(lexer, &token, isc_tokentype_string,
  49                                       ISC_FALSE));
  50
  51         dns_name_init(&name, NULL);
  52         buffer_fromregion(&buffer, &token.value.as_region);
  53         origin = (origin != NULL) ? origin : dns_rootname;
  54         RETTOK(dns_name_fromtext(&name, &buffer, origin, options, target));
  55         ok = ISC_TRUE;
  56         if ((options & DNS_RDATA_CHECKNAMES) != 0)
  57                 ok = dns_name_ishostname(&name, ISC_FALSE);
  58         if (!ok && (options & DNS_RDATA_CHECKNAMESFAIL) != 0)
  59                 RETTOK(DNS_R_BADNAME);
  60         if (!ok && callbacks != NULL)
  61                 warn_badname(&name, lexer, callbacks);
  62         return (ISC_R_SUCCESS);
  63 }
  64
  65 static inline isc_result_t
  66 totext_rt(ARGS_TOTEXT) {
  67         isc_region_t region;
  68         dns_name_t name;
  69         dns_name_t prefix;
  70         isc_boolean_t sub;
  71         char buf[sizeof("64000")];
  72         unsigned short num;
  73
  74         REQUIRE(rdata->type == 21);
  75         REQUIRE(rdata->length != 0);
  76
  77         dns_name_init(&name, NULL);
  78         dns_name_init(&prefix, NULL);
  79
  80         dns_rdata_toregion(rdata, &region);
  81         num = uint16_fromregion(&region);
  82         isc_region_consume(&region, 2);
  83         sprintf(buf, "%u", num);
  84         RETERR(str_totext(buf, target));
  85         RETERR(str_totext(" ", target));
  86         dns_name_fromregion(&name, &region);
  87         sub = name_prefix(&name, tctx->origin, &prefix);
  88         return (dns_name_totext(&prefix, sub, target));
  89 }
  90
  91 static inline isc_result_t
  92 fromwire_rt(ARGS_FROMWIRE) {
  93         dns_name_t name;
  94         isc_region_t sregion;
  95         isc_region_t tregion;
  96
  97         REQUIRE(type == 21);
  98
  99         UNUSED(type);
 100         UNUSED(rdclass);
 101
 102         dns_decompress_setmethods(dctx, DNS_COMPRESS_NONE);
 103
 104         dns_name_init(&name, NULL);
 105
 106         isc_buffer_activeregion(source, &sregion);
 107         isc_buffer_availableregion(target, &tregion);
 108         if (tregion.length < 2)
 109                 return (ISC_R_NOSPACE);
 110         if (sregion.length < 2)
 111                 return (ISC_R_UNEXPECTEDEND);
 112         memcpy(tregion.base, sregion.base, 2);
 113         isc_buffer_forward(source, 2);
 114         isc_buffer_add(target, 2);
 115         return (dns_name_fromwire(&name, source, dctx, options, target));
 116 }
 117
 118 static inline isc_result_t
 119 towire_rt(ARGS_TOWIRE) {
 120         dns_name_t name;
 121         dns_offsets_t offsets;
 122         isc_region_t region;
 123         isc_region_t tr;
 124
 125         REQUIRE(rdata->type == 21);
 126         REQUIRE(rdata->length != 0);
 127
 128         dns_compress_setmethods(cctx, DNS_COMPRESS_NONE);
 129         isc_buffer_availableregion(target, &tr);
 130         dns_rdata_toregion(rdata, &region);
 131         if (tr.length < 2)
 132                 return (ISC_R_NOSPACE);
 133         memcpy(tr.base, region.base, 2);
 134         isc_region_consume(&region, 2);
 135         isc_buffer_add(target, 2);
 136
 137         dns_name_init(&name, offsets);
 138         dns_name_fromregion(&name, &region);
 139
 140         return (dns_name_towire(&name, cctx, target));
 141 }
 142
 143 static inline int
 144 compare_rt(ARGS_COMPARE) {
 145         dns_name_t name1;
 146         dns_name_t name2;
 147         isc_region_t region1;
 148         isc_region_t region2;
 149         int order;
 150
 151         REQUIRE(rdata1->type == rdata2->type);
 152         REQUIRE(rdata1->rdclass == rdata2->rdclass);
 153         REQUIRE(rdata1->type == 21);
 154         REQUIRE(rdata1->length != 0);
 155         REQUIRE(rdata2->length != 0);
 156
 157         order = memcmp(rdata1->data, rdata2->data, 2);
 158         if (order != 0)
 159                 return (order < 0 ? -1 : 1);
 160
 161         dns_name_init(&name1, NULL);
 162         dns_name_init(&name2, NULL);
 163
 164         dns_rdata_toregion(rdata1, &region1);
 165         dns_rdata_toregion(rdata2, &region2);
 166
 167         isc_region_consume(&region1, 2);
 168         isc_region_consume(&region2, 2);
 169
 170         dns_name_fromregion(&name1, &region1);
 171         dns_name_fromregion(&name2, &region2);
 172
 173         return (dns_name_rdatacompare(&name1, &name2));
 174 }
 175
 176 static inline isc_result_t
 177 fromstruct_rt(ARGS_FROMSTRUCT) {
 178         dns_rdata_rt_t *rt = source;
 179         isc_region_t region;
 180
 181         REQUIRE(type == 21);
 182         REQUIRE(source != NULL);
 183         REQUIRE(rt->common.rdtype == type);
 184         REQUIRE(rt->common.rdclass == rdclass);
 185
 186         UNUSED(type);
 187         UNUSED(rdclass);
 188
 189         RETERR(uint16_tobuffer(rt->preference, target));
 190         dns_name_toregion(&rt->host, &region);
 191         return (isc_buffer_copyregion(target, &region));
 192 }
 193
 194 static inline isc_result_t
 195 tostruct_rt(ARGS_TOSTRUCT) {
 196         isc_region_t region;
 197         dns_rdata_rt_t *rt = target;
 198         dns_name_t name;
 199
 200         REQUIRE(rdata->type == 21);
 201         REQUIRE(target != NULL);
 202         REQUIRE(rdata->length != 0);
 203
 204         rt->common.rdclass = rdata->rdclass;
 205         rt->common.rdtype = rdata->type;
 206         ISC_LINK_INIT(&rt->common, link);
 207
 208         dns_name_init(&name, NULL);
 209         dns_rdata_toregion(rdata, &region);
 210         rt->preference = uint16_fromregion(&region);
 211         isc_region_consume(&region, 2);
 212         dns_name_fromregion(&name, &region);
 213         dns_name_init(&rt->host, NULL);
 214         RETERR(name_duporclone(&name, mctx, &rt->host));
 215
 216         rt->mctx = mctx;
 217         return (ISC_R_SUCCESS);
 218 }
 219
 220 static inline void
 221 freestruct_rt(ARGS_FREESTRUCT) {
 222         dns_rdata_rt_t *rt = source;
 223
 224         REQUIRE(source != NULL);
 225         REQUIRE(rt->common.rdtype == 21);
 226
 227         if (rt->mctx == NULL)
 228                 return;
 229
 230         dns_name_free(&rt->host, rt->mctx);
 231         rt->mctx = NULL;
 232 }
 233
 234 static inline isc_result_t
 235 additionaldata_rt(ARGS_ADDLDATA) {
 236         dns_name_t name;
 237         dns_offsets_t offsets;
 238         isc_region_t region;
 239         isc_result_t result;
 240
 241         REQUIRE(rdata->type == 21);
 242
 243         dns_name_init(&name, offsets);
 244         dns_rdata_toregion(rdata, &region);
 245         isc_region_consume(&region, 2);
 246         dns_name_fromregion(&name, &region);
 247
 248         result = (add)(arg, &name, dns_rdatatype_x25);
 249         if (result != ISC_R_SUCCESS)
 250                 return (result);
 251         result = (add)(arg, &name, dns_rdatatype_isdn);
 252         if (result != ISC_R_SUCCESS)
 253                 return (result);
 254         return ((add)(arg, &name, dns_rdatatype_a));
 255 }
 256
 257 static inline isc_result_t
 258 digest_rt(ARGS_DIGEST) {
 259         isc_region_t r1, r2;
 260         isc_result_t result;
 261         dns_name_t name;
 262
 263         REQUIRE(rdata->type == 21);
 264
 265         dns_rdata_toregion(rdata, &r1);
 266         r2 = r1;
 267         isc_region_consume(&r2, 2);
 268         r1.length = 2;
 269         result = (digest)(arg, &r1);
 270         if (result != ISC_R_SUCCESS)
 271                 return (result);
 272         dns_name_init(&name, NULL);
 273         dns_name_fromregion(&name, &r2);
 274         return (dns_name_digest(&name, digest, arg));
 275 }
 276
 277 static inline isc_boolean_t
 278 checkowner_rt(ARGS_CHECKOWNER) {
 279
 280         REQUIRE(type == 21);
 281
 282         UNUSED(name);
 283         UNUSED(type);
 284         UNUSED(rdclass);
 285         UNUSED(wildcard);
 286
 287         return (ISC_TRUE);
 288 }
 289
 290 static inline isc_boolean_t
 291 checknames_rt(ARGS_CHECKNAMES) {
 292         isc_region_t region;
 293         dns_name_t name;
 294
 295         REQUIRE(rdata->type == 21);
 296
 297         UNUSED(owner);
 298
 299         dns_rdata_toregion(rdata, &region);
 300         isc_region_consume(&region, 2);
 301         dns_name_init(&name, NULL);
 302         dns_name_fromregion(&name, &region);
 303         if (!dns_name_ishostname(&name, ISC_FALSE)) {
 304                 if (bad != NULL)
 305                         dns_name_clone(&name, bad);
 306                 return (ISC_FALSE);
 307         }
 308         return (ISC_TRUE);
 309 }
 310
 311 #endif  /* RDATA_GENERIC_RT_21_C */