contrib/bind-9.5.2/lib/dns/rdata/generic/afsdb_18.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: afsdb_18.c,v 1.47 2007/06/19 23:47:17 tbox Exp $ */
  19
  20 /* Reviewed: Wed Mar 15 14:59:00 PST 2000 by explorer */
  21
  22 /* RFC1183 */
  23
  24 #ifndef RDATA_GENERIC_AFSDB_18_C
  25 #define RDATA_GENERIC_AFSDB_18_C
  26
  27 #define RRTYPE_AFSDB_ATTRIBUTES (0)
  28
  29 static inline isc_result_t
  30 fromtext_afsdb(ARGS_FROMTEXT) {
  31         isc_token_t token;
  32         isc_buffer_t buffer;
  33         dns_name_t name;
  34         isc_boolean_t ok;
  35
  36         REQUIRE(type == 18);
  37
  38         UNUSED(type);
  39         UNUSED(rdclass);
  40         UNUSED(callbacks);
  41
  42         /*
  43          * Subtype.
  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          * Hostname.
  53          */
  54         RETERR(isc_lex_getmastertoken(lexer, &token, isc_tokentype_string,
  55                                       ISC_FALSE));
  56         dns_name_init(&name, NULL);
  57         buffer_fromregion(&buffer, &token.value.as_region);
  58         origin = (origin != NULL) ? origin : dns_rootname;
  59         RETTOK(dns_name_fromtext(&name, &buffer, origin, options, target));
  60         ok = ISC_TRUE;
  61         if ((options & DNS_RDATA_CHECKNAMES) != 0)
  62                 ok = dns_name_ishostname(&name, ISC_FALSE);
  63         if (!ok && (options & DNS_RDATA_CHECKNAMESFAIL) != 0)
  64                 RETTOK(DNS_R_BADNAME);
  65         if (!ok && callbacks != NULL)
  66                 warn_badname(&name, lexer, callbacks);
  67         return (ISC_R_SUCCESS);
  68 }
  69
  70 static inline isc_result_t
  71 totext_afsdb(ARGS_TOTEXT) {
  72         dns_name_t name;
  73         dns_name_t prefix;
  74         isc_region_t region;
  75         char buf[sizeof("64000 ")];
  76         isc_boolean_t sub;
  77         unsigned int num;
  78
  79         REQUIRE(rdata->type == 18);
  80         REQUIRE(rdata->length != 0);
  81
  82         dns_name_init(&name, NULL);
  83         dns_name_init(&prefix, NULL);
  84
  85         dns_rdata_toregion(rdata, &region);
  86         num = uint16_fromregion(&region);
  87         isc_region_consume(&region, 2);
  88         sprintf(buf, "%u ", num);
  89         RETERR(str_totext(buf, target));
  90         dns_name_fromregion(&name, &region);
  91         sub = name_prefix(&name, tctx->origin, &prefix);
  92         return (dns_name_totext(&prefix, sub, target));
  93 }
  94
  95 static inline isc_result_t
  96 fromwire_afsdb(ARGS_FROMWIRE) {
  97         dns_name_t name;
  98         isc_region_t sr;
  99         isc_region_t tr;
 100
 101         REQUIRE(type == 18);
 102
 103         UNUSED(type);
 104         UNUSED(rdclass);
 105
 106         dns_decompress_setmethods(dctx, DNS_COMPRESS_NONE);
 107
 108         dns_name_init(&name, NULL);
 109
 110         isc_buffer_activeregion(source, &sr);
 111         isc_buffer_availableregion(target, &tr);
 112         if (tr.length < 2)
 113                 return (ISC_R_NOSPACE);
 114         if (sr.length < 2)
 115                 return (ISC_R_UNEXPECTEDEND);
 116         memcpy(tr.base, sr.base, 2);
 117         isc_buffer_forward(source, 2);
 118         isc_buffer_add(target, 2);
 119         return (dns_name_fromwire(&name, source, dctx, options, target));
 120 }
 121
 122 static inline isc_result_t
 123 towire_afsdb(ARGS_TOWIRE) {
 124         isc_region_t tr;
 125         isc_region_t sr;
 126         dns_name_t name;
 127         dns_offsets_t offsets;
 128
 129         REQUIRE(rdata->type == 18);
 130         REQUIRE(rdata->length != 0);
 131
 132         dns_compress_setmethods(cctx, DNS_COMPRESS_NONE);
 133         isc_buffer_availableregion(target, &tr);
 134         dns_rdata_toregion(rdata, &sr);
 135         if (tr.length < 2)
 136                 return (ISC_R_NOSPACE);
 137         memcpy(tr.base, sr.base, 2);
 138         isc_region_consume(&sr, 2);
 139         isc_buffer_add(target, 2);
 140
 141         dns_name_init(&name, offsets);
 142         dns_name_fromregion(&name, &sr);
 143
 144         return (dns_name_towire(&name, cctx, target));
 145 }
 146
 147 static inline int
 148 compare_afsdb(ARGS_COMPARE) {
 149         int result;
 150         dns_name_t name1;
 151         dns_name_t name2;
 152         isc_region_t region1;
 153         isc_region_t region2;
 154
 155         REQUIRE(rdata1->type == rdata2->type);
 156         REQUIRE(rdata1->rdclass == rdata2->rdclass);
 157         REQUIRE(rdata1->type == 18);
 158         REQUIRE(rdata1->length != 0);
 159         REQUIRE(rdata2->length != 0);
 160
 161         result = memcmp(rdata1->data, rdata2->data, 2);
 162         if (result != 0)
 163                 return (result < 0 ? -1 : 1);
 164
 165         dns_name_init(&name1, NULL);
 166         dns_name_init(&name2, NULL);
 167
 168         dns_rdata_toregion(rdata1, &region1);
 169         dns_rdata_toregion(rdata2, &region2);
 170
 171         isc_region_consume(&region1, 2);
 172         isc_region_consume(&region2, 2);
 173
 174         dns_name_fromregion(&name1, &region1);
 175         dns_name_fromregion(&name2, &region2);
 176
 177         return (dns_name_rdatacompare(&name1, &name2));
 178 }
 179
 180 static inline isc_result_t
 181 fromstruct_afsdb(ARGS_FROMSTRUCT) {
 182         dns_rdata_afsdb_t *afsdb = source;
 183         isc_region_t region;
 184
 185         REQUIRE(type == 18);
 186         REQUIRE(source != NULL);
 187         REQUIRE(afsdb->common.rdclass == rdclass);
 188         REQUIRE(afsdb->common.rdtype == type);
 189
 190         UNUSED(type);
 191         UNUSED(rdclass);
 192
 193         RETERR(uint16_tobuffer(afsdb->subtype, target));
 194         dns_name_toregion(&afsdb->server, &region);
 195         return (isc_buffer_copyregion(target, &region));
 196 }
 197
 198 static inline isc_result_t
 199 tostruct_afsdb(ARGS_TOSTRUCT) {
 200         isc_region_t region;
 201         dns_rdata_afsdb_t *afsdb = target;
 202         dns_name_t name;
 203
 204         REQUIRE(rdata->type == 18);
 205         REQUIRE(target != NULL);
 206         REQUIRE(rdata->length != 0);
 207
 208         afsdb->common.rdclass = rdata->rdclass;
 209         afsdb->common.rdtype = rdata->type;
 210         ISC_LINK_INIT(&afsdb->common, link);
 211
 212         dns_name_init(&afsdb->server, NULL);
 213
 214         dns_rdata_toregion(rdata, &region);
 215
 216         afsdb->subtype = uint16_fromregion(&region);
 217         isc_region_consume(&region, 2);
 218
 219         dns_name_init(&name, NULL);
 220         dns_name_fromregion(&name, &region);
 221
 222         RETERR(name_duporclone(&name, mctx, &afsdb->server));
 223         afsdb->mctx = mctx;
 224         return (ISC_R_SUCCESS);
 225 }
 226
 227 static inline void
 228 freestruct_afsdb(ARGS_FREESTRUCT) {
 229         dns_rdata_afsdb_t *afsdb = source;
 230
 231         REQUIRE(source != NULL);
 232         REQUIRE(afsdb->common.rdtype == 18);
 233
 234         if (afsdb->mctx == NULL)
 235                 return;
 236
 237         dns_name_free(&afsdb->server, afsdb->mctx);
 238         afsdb->mctx = NULL;
 239 }
 240
 241 static inline isc_result_t
 242 additionaldata_afsdb(ARGS_ADDLDATA) {
 243         dns_name_t name;
 244         dns_offsets_t offsets;
 245         isc_region_t region;
 246
 247         REQUIRE(rdata->type == 18);
 248
 249         dns_name_init(&name, offsets);
 250         dns_rdata_toregion(rdata, &region);
 251         isc_region_consume(&region, 2);
 252         dns_name_fromregion(&name, &region);
 253
 254         return ((add)(arg, &name, dns_rdatatype_a));
 255 }
 256
 257 static inline isc_result_t
 258 digest_afsdb(ARGS_DIGEST) {
 259         isc_region_t r1, r2;
 260         dns_name_t name;
 261
 262         REQUIRE(rdata->type == 18);
 263
 264         dns_rdata_toregion(rdata, &r1);
 265         r2 = r1;
 266         isc_region_consume(&r2, 2);
 267         r1.length = 2;
 268         RETERR((digest)(arg, &r1));
 269         dns_name_init(&name, NULL);
 270         dns_name_fromregion(&name, &r2);
 271
 272         return (dns_name_digest(&name, digest, arg));
 273 }
 274
 275 static inline isc_boolean_t
 276 checkowner_afsdb(ARGS_CHECKOWNER) {
 277
 278         REQUIRE(type == 18);
 279
 280         UNUSED(name);
 281         UNUSED(type);
 282         UNUSED(rdclass);
 283         UNUSED(wildcard);
 284
 285         return (ISC_TRUE);
 286 }
 287
 288 static inline isc_boolean_t
 289 checknames_afsdb(ARGS_CHECKNAMES) {
 290         isc_region_t region;
 291         dns_name_t name;
 292
 293         REQUIRE(rdata->type == 18);
 294
 295         UNUSED(owner);
 296
 297         dns_rdata_toregion(rdata, &region);
 298         isc_region_consume(&region, 2);
 299         dns_name_init(&name, NULL);
 300         dns_name_fromregion(&name, &region);
 301         if (!dns_name_ishostname(&name, ISC_FALSE)) {
 302                 if (bad != NULL)
 303                         dns_name_clone(&name, bad);
 304                 return (ISC_FALSE);
 305         }
 306         return (ISC_TRUE);
 307 }
 308
 309 #endif  /* RDATA_GENERIC_AFSDB_18_C */