contrib/bind9/lib/dns/rdata/generic/dlv_32769.c

   1 /*
   2  * Copyright (C) 2004, 2006, 2007, 2009, 2010, 2012  Internet Systems Consortium, Inc. ("ISC")
   3  *
   4  * Permission to use, copy, modify, and/or distribute this software for any
   5  * purpose with or without fee is hereby granted, provided that the above
   6  * copyright notice and this permission notice appear in all copies.
   7  *
   8  * THE SOFTWARE IS PROVIDED "AS IS" AND ISC DISCLAIMS ALL WARRANTIES WITH
   9  * REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY
  10  * AND FITNESS.  IN NO EVENT SHALL ISC BE LIABLE FOR ANY SPECIAL, DIRECT,
  11  * INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM
  12  * LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE
  13  * OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
  14  * PERFORMANCE OF THIS SOFTWARE.
  15  */
  16
  17 /* $Id$ */
  18
  19 /* draft-ietf-dnsext-delegation-signer-05.txt */
  20
  21 #ifndef RDATA_GENERIC_DLV_32769_C
  22 #define RDATA_GENERIC_DLV_32769_C
  23
  24 #define RRTYPE_DLV_ATTRIBUTES 0
  25
  26 #include <isc/sha1.h>
  27 #include <isc/sha2.h>
  28
  29 #include <dns/ds.h>
  30
  31
  32 static inline isc_result_t
  33 fromtext_dlv(ARGS_FROMTEXT) {
  34         isc_token_t token;
  35         unsigned char c;
  36         int length;
  37
  38         REQUIRE(type == 32769);
  39
  40         UNUSED(type);
  41         UNUSED(rdclass);
  42         UNUSED(origin);
  43         UNUSED(options);
  44         UNUSED(callbacks);
  45
  46         /*
  47          * Key tag.
  48          */
  49         RETERR(isc_lex_getmastertoken(lexer, &token, isc_tokentype_number,
  50                                       ISC_FALSE));
  51         if (token.value.as_ulong > 0xffffU)
  52                 RETTOK(ISC_R_RANGE);
  53         RETERR(uint16_tobuffer(token.value.as_ulong, target));
  54
  55         /*
  56          * Algorithm.
  57          */
  58         RETERR(isc_lex_getmastertoken(lexer, &token, isc_tokentype_number,
  59                                       ISC_FALSE));
  60         if (token.value.as_ulong > 0xffU)
  61                 RETTOK(ISC_R_RANGE);
  62         RETERR(uint8_tobuffer(token.value.as_ulong, target));
  63
  64         /*
  65          * Digest type.
  66          */
  67         RETERR(isc_lex_getmastertoken(lexer, &token, isc_tokentype_number,
  68                                       ISC_FALSE));
  69         if (token.value.as_ulong > 0xffU)
  70                 RETTOK(ISC_R_RANGE);
  71         RETERR(uint8_tobuffer(token.value.as_ulong, target));
  72         c = (unsigned char) token.value.as_ulong;
  73
  74         /*
  75          * Digest.
  76          */
  77         switch (c) {
  78         case DNS_DSDIGEST_SHA1:
  79                 length = ISC_SHA1_DIGESTLENGTH;
  80                 break;
  81         case DNS_DSDIGEST_SHA256:
  82                 length = ISC_SHA256_DIGESTLENGTH;
  83                 break;
  84         case DNS_DSDIGEST_GOST:
  85                 length = ISC_GOST_DIGESTLENGTH;
  86                 break;
  87         case DNS_DSDIGEST_SHA384:
  88                 length = ISC_SHA384_DIGESTLENGTH;
  89                 break;
  90         default:
  91                 length = -1;
  92                 break;
  93         }
  94         return (isc_hex_tobuffer(lexer, target, -1));
  95 }
  96
  97 static inline isc_result_t
  98 totext_dlv(ARGS_TOTEXT) {
  99         isc_region_t sr;
 100         char buf[sizeof("64000 ")];
 101         unsigned int n;
 102
 103         REQUIRE(rdata->type == 32769);
 104         REQUIRE(rdata->length != 0);
 105
 106         UNUSED(tctx);
 107
 108         dns_rdata_toregion(rdata, &sr);
 109
 110         /*
 111          * Key tag.
 112          */
 113         n = uint16_fromregion(&sr);
 114         isc_region_consume(&sr, 2);
 115         sprintf(buf, "%u ", n);
 116         RETERR(str_totext(buf, target));
 117
 118         /*
 119          * Algorithm.
 120          */
 121         n = uint8_fromregion(&sr);
 122         isc_region_consume(&sr, 1);
 123         sprintf(buf, "%u ", n);
 124         RETERR(str_totext(buf, target));
 125
 126         /*
 127          * Digest type.
 128          */
 129         n = uint8_fromregion(&sr);
 130         isc_region_consume(&sr, 1);
 131         sprintf(buf, "%u", n);
 132         RETERR(str_totext(buf, target));
 133
 134         /*
 135          * Digest.
 136          */
 137         if ((tctx->flags & DNS_STYLEFLAG_MULTILINE) != 0)
 138                 RETERR(str_totext(" (", target));
 139         RETERR(str_totext(tctx->linebreak, target));
 140         RETERR(isc_hex_totext(&sr, tctx->width - 2, tctx->linebreak, target));
 141         if ((tctx->flags & DNS_STYLEFLAG_MULTILINE) != 0)
 142                 RETERR(str_totext(" )", target));
 143         return (ISC_R_SUCCESS);
 144 }
 145
 146 static inline isc_result_t
 147 fromwire_dlv(ARGS_FROMWIRE) {
 148         isc_region_t sr;
 149
 150         REQUIRE(type == 32769);
 151
 152         UNUSED(type);
 153         UNUSED(rdclass);
 154         UNUSED(dctx);
 155         UNUSED(options);
 156
 157         isc_buffer_activeregion(source, &sr);
 158
 159         /*
 160          * Check digest lengths if we know them.
 161          */
 162         if (sr.length < 4 ||
 163             (sr.base[3] == DNS_DSDIGEST_SHA1 &&
 164              sr.length < 4 + ISC_SHA1_DIGESTLENGTH) ||
 165             (sr.base[3] == DNS_DSDIGEST_SHA256 &&
 166              sr.length < 4 + ISC_SHA256_DIGESTLENGTH) ||
 167             (sr.base[3] == DNS_DSDIGEST_GOST &&
 168              sr.length < 4 + ISC_GOST_DIGESTLENGTH) ||
 169             (sr.base[3] == DNS_DSDIGEST_SHA384 &&
 170              sr.length < 4 + ISC_SHA384_DIGESTLENGTH))
 171                 return (ISC_R_UNEXPECTEDEND);
 172
 173         /*
 174          * Only copy digest lengths if we know them.
 175          * If there is extra data dns_rdata_fromwire() will
 176          * detect that.
 177          */
 178         if (sr.base[3] == DNS_DSDIGEST_SHA1)
 179                 sr.length = 4 + ISC_SHA1_DIGESTLENGTH;
 180         else if (sr.base[3] == DNS_DSDIGEST_SHA256)
 181                 sr.length = 4 + ISC_SHA256_DIGESTLENGTH;
 182         else if (sr.base[3] == DNS_DSDIGEST_GOST)
 183                 sr.length = 4 + ISC_GOST_DIGESTLENGTH;
 184         else if (sr.base[3] == DNS_DSDIGEST_SHA384)
 185                 sr.length = 4 + ISC_SHA384_DIGESTLENGTH;
 186
 187         isc_buffer_forward(source, sr.length);
 188         return (mem_tobuffer(target, sr.base, sr.length));
 189 }
 190
 191 static inline isc_result_t
 192 towire_dlv(ARGS_TOWIRE) {
 193         isc_region_t sr;
 194
 195         REQUIRE(rdata->type == 32769);
 196         REQUIRE(rdata->length != 0);
 197
 198         UNUSED(cctx);
 199
 200         dns_rdata_toregion(rdata, &sr);
 201         return (mem_tobuffer(target, sr.base, sr.length));
 202 }
 203
 204 static inline int
 205 compare_dlv(ARGS_COMPARE) {
 206         isc_region_t r1;
 207         isc_region_t r2;
 208
 209         REQUIRE(rdata1->type == rdata2->type);
 210         REQUIRE(rdata1->rdclass == rdata2->rdclass);
 211         REQUIRE(rdata1->type == 32769);
 212         REQUIRE(rdata1->length != 0);
 213         REQUIRE(rdata2->length != 0);
 214
 215         dns_rdata_toregion(rdata1, &r1);
 216         dns_rdata_toregion(rdata2, &r2);
 217         return (isc_region_compare(&r1, &r2));
 218 }
 219
 220 static inline isc_result_t
 221 fromstruct_dlv(ARGS_FROMSTRUCT) {
 222         dns_rdata_dlv_t *dlv = source;
 223
 224         REQUIRE(type == 32769);
 225         REQUIRE(source != NULL);
 226         REQUIRE(dlv->common.rdtype == type);
 227         REQUIRE(dlv->common.rdclass == rdclass);
 228         switch (dlv->digest_type) {
 229         case DNS_DSDIGEST_SHA1:
 230                 REQUIRE(dlv->length == ISC_SHA1_DIGESTLENGTH);
 231                 break;
 232         case DNS_DSDIGEST_SHA256:
 233                 REQUIRE(dlv->length == ISC_SHA256_DIGESTLENGTH);
 234                 break;
 235         case DNS_DSDIGEST_GOST:
 236                 REQUIRE(dlv->length == ISC_GOST_DIGESTLENGTH);
 237                 break;
 238         case DNS_DSDIGEST_SHA384:
 239                 REQUIRE(dlv->length == ISC_SHA384_DIGESTLENGTH);
 240                 break;
 241         }
 242
 243         UNUSED(type);
 244         UNUSED(rdclass);
 245
 246         RETERR(uint16_tobuffer(dlv->key_tag, target));
 247         RETERR(uint8_tobuffer(dlv->algorithm, target));
 248         RETERR(uint8_tobuffer(dlv->digest_type, target));
 249
 250         return (mem_tobuffer(target, dlv->digest, dlv->length));
 251 }
 252
 253 static inline isc_result_t
 254 tostruct_dlv(ARGS_TOSTRUCT) {
 255         dns_rdata_dlv_t *dlv = target;
 256         isc_region_t region;
 257
 258         REQUIRE(rdata->type == 32769);
 259         REQUIRE(target != NULL);
 260         REQUIRE(rdata->length != 0);
 261
 262         dlv->common.rdclass = rdata->rdclass;
 263         dlv->common.rdtype = rdata->type;
 264         ISC_LINK_INIT(&dlv->common, link);
 265
 266         dns_rdata_toregion(rdata, &region);
 267
 268         dlv->key_tag = uint16_fromregion(&region);
 269         isc_region_consume(&region, 2);
 270         dlv->algorithm = uint8_fromregion(&region);
 271         isc_region_consume(&region, 1);
 272         dlv->digest_type = uint8_fromregion(&region);
 273         isc_region_consume(&region, 1);
 274         dlv->length = region.length;
 275
 276         dlv->digest = mem_maybedup(mctx, region.base, region.length);
 277         if (dlv->digest == NULL)
 278                 return (ISC_R_NOMEMORY);
 279
 280         dlv->mctx = mctx;
 281         return (ISC_R_SUCCESS);
 282 }
 283
 284 static inline void
 285 freestruct_dlv(ARGS_FREESTRUCT) {
 286         dns_rdata_dlv_t *dlv = source;
 287
 288         REQUIRE(dlv != NULL);
 289         REQUIRE(dlv->common.rdtype == 32769);
 290
 291         if (dlv->mctx == NULL)
 292                 return;
 293
 294         if (dlv->digest != NULL)
 295                 isc_mem_free(dlv->mctx, dlv->digest);
 296         dlv->mctx = NULL;
 297 }
 298
 299 static inline isc_result_t
 300 additionaldata_dlv(ARGS_ADDLDATA) {
 301         REQUIRE(rdata->type == 32769);
 302
 303         UNUSED(rdata);
 304         UNUSED(add);
 305         UNUSED(arg);
 306
 307         return (ISC_R_SUCCESS);
 308 }
 309
 310 static inline isc_result_t
 311 digest_dlv(ARGS_DIGEST) {
 312         isc_region_t r;
 313
 314         REQUIRE(rdata->type == 32769);
 315
 316         dns_rdata_toregion(rdata, &r);
 317
 318         return ((digest)(arg, &r));
 319 }
 320
 321 static inline isc_boolean_t
 322 checkowner_dlv(ARGS_CHECKOWNER) {
 323
 324         REQUIRE(type == 32769);
 325
 326         UNUSED(name);
 327         UNUSED(type);
 328         UNUSED(rdclass);
 329         UNUSED(wildcard);
 330
 331         return (ISC_TRUE);
 332 }
 333
 334 static inline isc_boolean_t
 335 checknames_dlv(ARGS_CHECKNAMES) {
 336
 337         REQUIRE(rdata->type == 32769);
 338
 339         UNUSED(rdata);
 340         UNUSED(owner);
 341         UNUSED(bad);
 342
 343         return (ISC_TRUE);
 344 }
 345
 346 static inline int
 347 casecompare_dlv(ARGS_COMPARE) {
 348         return (compare_dlv(rdata1, rdata2));
 349 }
 350
 351 #endif  /* RDATA_GENERIC_DLV_32769_C */