external/bsd/bind/dist/lib/dns/rdata/generic/afsdb_18.c

   1 /*      $NetBSD: afsdb_18.c,v 1.5 2014/12/10 04:37:58 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: afsdb_18.c,v 1.49 2009/12/04 22:06:37 tbox Exp  */
  21
  22 /* Reviewed: Wed Mar 15 14:59:00 PST 2000 by explorer */
  23
  24 /* RFC1183 */
  25
  26 #ifndef RDATA_GENERIC_AFSDB_18_C
  27 #define RDATA_GENERIC_AFSDB_18_C
  28
  29 #define RRTYPE_AFSDB_ATTRIBUTES (0)
  30
  31 static inline isc_result_t
  32 fromtext_afsdb(ARGS_FROMTEXT) {
  33         isc_token_t token;
  34         isc_buffer_t buffer;
  35         dns_name_t name;
  36         isc_boolean_t ok;
  37
  38         REQUIRE(type == 18);
  39
  40         UNUSED(type);
  41         UNUSED(rdclass);
  42         UNUSED(callbacks);
  43
  44         /*
  45          * Subtype.
  46          */
  47         RETERR(isc_lex_getmastertoken(lexer, &token, isc_tokentype_number,
  48                                       ISC_FALSE));
  49         if (token.value.as_ulong > 0xffffU)
  50                 RETTOK(ISC_R_RANGE);
  51         RETERR(uint16_tobuffer(token.value.as_ulong, target));
  52
  53         /*
  54          * Hostname.
  55          */
  56         RETERR(isc_lex_getmastertoken(lexer, &token, isc_tokentype_string,
  57                                       ISC_FALSE));
  58         dns_name_init(&name, NULL);
  59         buffer_fromregion(&buffer, &token.value.as_region);
  60         origin = (origin != NULL) ? origin : dns_rootname;
  61         RETTOK(dns_name_fromtext(&name, &buffer, origin, options, target));
  62         ok = ISC_TRUE;
  63         if ((options & DNS_RDATA_CHECKNAMES) != 0)
  64                 ok = dns_name_ishostname(&name, ISC_FALSE);
  65         if (!ok && (options & DNS_RDATA_CHECKNAMESFAIL) != 0)
  66                 RETTOK(DNS_R_BADNAME);
  67         if (!ok && callbacks != NULL)
  68                 warn_badname(&name, lexer, callbacks);
  69         return (ISC_R_SUCCESS);
  70 }
  71
  72 static inline isc_result_t
  73 totext_afsdb(ARGS_TOTEXT) {
  74         dns_name_t name;
  75         dns_name_t prefix;
  76         isc_region_t region;
  77         char buf[sizeof("64000 ")];
  78         isc_boolean_t sub;
  79         unsigned int num;
  80
  81         REQUIRE(rdata->type == 18);
  82         REQUIRE(rdata->length != 0);
  83
  84         dns_name_init(&name, NULL);
  85         dns_name_init(&prefix, NULL);
  86
  87         dns_rdata_toregion(rdata, &region);
  88         num = uint16_fromregion(&region);
  89         isc_region_consume(&region, 2);
  90         sprintf(buf, "%u ", num);
  91         RETERR(str_totext(buf, target));
  92         dns_name_fromregion(&name, &region);
  93         sub = name_prefix(&name, tctx->origin, &prefix);
  94         return (dns_name_totext(&prefix, sub, target));
  95 }
  96
  97 static inline isc_result_t
  98 fromwire_afsdb(ARGS_FROMWIRE) {
  99         dns_name_t name;
 100         isc_region_t sr;
 101         isc_region_t tr;
 102
 103         REQUIRE(type == 18);
 104
 105         UNUSED(type);
 106         UNUSED(rdclass);
 107
 108         dns_decompress_setmethods(dctx, DNS_COMPRESS_NONE);
 109
 110         dns_name_init(&name, NULL);
 111
 112         isc_buffer_activeregion(source, &sr);
 113         isc_buffer_availableregion(target, &tr);
 114         if (tr.length < 2)
 115                 return (ISC_R_NOSPACE);
 116         if (sr.length < 2)
 117                 return (ISC_R_UNEXPECTEDEND);
 118         memmove(tr.base, sr.base, 2);
 119         isc_buffer_forward(source, 2);
 120         isc_buffer_add(target, 2);
 121         return (dns_name_fromwire(&name, source, dctx, options, target));
 122 }
 123
 124 static inline isc_result_t
 125 towire_afsdb(ARGS_TOWIRE) {
 126         isc_region_t tr;
 127         isc_region_t sr;
 128         dns_name_t name;
 129         dns_offsets_t offsets;
 130
 131         REQUIRE(rdata->type == 18);
 132         REQUIRE(rdata->length != 0);
 133
 134         dns_compress_setmethods(cctx, DNS_COMPRESS_NONE);
 135         isc_buffer_availableregion(target, &tr);
 136         dns_rdata_toregion(rdata, &sr);
 137         if (tr.length < 2)
 138                 return (ISC_R_NOSPACE);
 139         memmove(tr.base, sr.base, 2);
 140         isc_region_consume(&sr, 2);
 141         isc_buffer_add(target, 2);
 142
 143         dns_name_init(&name, offsets);
 144         dns_name_fromregion(&name, &sr);
 145
 146         return (dns_name_towire(&name, cctx, target));
 147 }
 148
 149 static inline int
 150 compare_afsdb(ARGS_COMPARE) {
 151         int result;
 152         dns_name_t name1;
 153         dns_name_t name2;
 154         isc_region_t region1;
 155         isc_region_t region2;
 156
 157         REQUIRE(rdata1->type == rdata2->type);
 158         REQUIRE(rdata1->rdclass == rdata2->rdclass);
 159         REQUIRE(rdata1->type == 18);
 160         REQUIRE(rdata1->length != 0);
 161         REQUIRE(rdata2->length != 0);
 162
 163         result = memcmp(rdata1->data, rdata2->data, 2);
 164         if (result != 0)
 165                 return (result < 0 ? -1 : 1);
 166
 167         dns_name_init(&name1, NULL);
 168         dns_name_init(&name2, NULL);
 169
 170         dns_rdata_toregion(rdata1, &region1);
 171         dns_rdata_toregion(rdata2, &region2);
 172
 173         isc_region_consume(&region1, 2);
 174         isc_region_consume(&region2, 2);
 175
 176         dns_name_fromregion(&name1, &region1);
 177         dns_name_fromregion(&name2, &region2);
 178
 179         return (dns_name_rdatacompare(&name1, &name2));
 180 }
 181
 182 static inline isc_result_t
 183 fromstruct_afsdb(ARGS_FROMSTRUCT) {
 184         dns_rdata_afsdb_t *afsdb = source;
 185         isc_region_t region;
 186
 187         REQUIRE(type == 18);
 188         REQUIRE(source != NULL);
 189         REQUIRE(afsdb->common.rdclass == rdclass);
 190         REQUIRE(afsdb->common.rdtype == type);
 191
 192         UNUSED(type);
 193         UNUSED(rdclass);
 194
 195         RETERR(uint16_tobuffer(afsdb->subtype, target));
 196         dns_name_toregion(&afsdb->server, &region);
 197         return (isc_buffer_copyregion(target, &region));
 198 }
 199
 200 static inline isc_result_t
 201 tostruct_afsdb(ARGS_TOSTRUCT) {
 202         isc_region_t region;
 203         dns_rdata_afsdb_t *afsdb = target;
 204         dns_name_t name;
 205
 206         REQUIRE(rdata->type == 18);
 207         REQUIRE(target != NULL);
 208         REQUIRE(rdata->length != 0);
 209
 210         afsdb->common.rdclass = rdata->rdclass;
 211         afsdb->common.rdtype = rdata->type;
 212         ISC_LINK_INIT(&afsdb->common, link);
 213
 214         dns_name_init(&afsdb->server, NULL);
 215
 216         dns_rdata_toregion(rdata, &region);
 217
 218         afsdb->subtype = uint16_fromregion(&region);
 219         isc_region_consume(&region, 2);
 220
 221         dns_name_init(&name, NULL);
 222         dns_name_fromregion(&name, &region);
 223
 224         RETERR(name_duporclone(&name, mctx, &afsdb->server));
 225         afsdb->mctx = mctx;
 226         return (ISC_R_SUCCESS);
 227 }
 228
 229 static inline void
 230 freestruct_afsdb(ARGS_FREESTRUCT) {
 231         dns_rdata_afsdb_t *afsdb = source;
 232
 233         REQUIRE(source != NULL);
 234         REQUIRE(afsdb->common.rdtype == 18);
 235
 236         if (afsdb->mctx == NULL)
 237                 return;
 238
 239         dns_name_free(&afsdb->server, afsdb->mctx);
 240         afsdb->mctx = NULL;
 241 }
 242
 243 static inline isc_result_t
 244 additionaldata_afsdb(ARGS_ADDLDATA) {
 245         dns_name_t name;
 246         dns_offsets_t offsets;
 247         isc_region_t region;
 248
 249         REQUIRE(rdata->type == 18);
 250
 251         dns_name_init(&name, offsets);
 252         dns_rdata_toregion(rdata, &region);
 253         isc_region_consume(&region, 2);
 254         dns_name_fromregion(&name, &region);
 255
 256         return ((add)(arg, &name, dns_rdatatype_a));
 257 }
 258
 259 static inline isc_result_t
 260 digest_afsdb(ARGS_DIGEST) {
 261         isc_region_t r1, r2;
 262         dns_name_t name;
 263
 264         REQUIRE(rdata->type == 18);
 265
 266         dns_rdata_toregion(rdata, &r1);
 267         r2 = r1;
 268         isc_region_consume(&r2, 2);
 269         r1.length = 2;
 270         RETERR((digest)(arg, &r1));
 271         dns_name_init(&name, NULL);
 272         dns_name_fromregion(&name, &r2);
 273
 274         return (dns_name_digest(&name, digest, arg));
 275 }
 276
 277 static inline isc_boolean_t
 278 checkowner_afsdb(ARGS_CHECKOWNER) {
 279
 280         REQUIRE(type == 18);
 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_afsdb(ARGS_CHECKNAMES) {
 292         isc_region_t region;
 293         dns_name_t name;
 294
 295         REQUIRE(rdata->type == 18);
 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 static inline int
 312 casecompare_afsdb(ARGS_COMPARE) {
 313         return (compare_afsdb(rdata1, rdata2));
 314 }
 315 #endif  /* RDATA_GENERIC_AFSDB_18_C */