contrib/bind-9.5.2/lib/dns/rdata/generic/dnskey_48.c

   1 /*
   2  * Copyright (C) 2004, 2005, 2007  Internet Systems Consortium, Inc. ("ISC")
   3  * Copyright (C) 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: dnskey_48.c,v 1.8 2007/06/19 23:47:17 tbox Exp $ */
  19
  20 /*
  21  * Reviewed: Wed Mar 15 16:47:10 PST 2000 by halley.
  22  */
  23
  24 /* RFC2535 */
  25
  26 #ifndef RDATA_GENERIC_DNSKEY_48_C
  27 #define RDATA_GENERIC_DNSKEY_48_C
  28
  29 #include <dst/dst.h>
  30
  31 #define RRTYPE_DNSKEY_ATTRIBUTES (DNS_RDATATYPEATTR_DNSSEC)
  32
  33 static inline isc_result_t
  34 fromtext_dnskey(ARGS_FROMTEXT) {
  35         isc_token_t token;
  36         dns_secalg_t alg;
  37         dns_secproto_t proto;
  38         dns_keyflags_t flags;
  39
  40         REQUIRE(type == 48);
  41
  42         UNUSED(type);
  43         UNUSED(rdclass);
  44         UNUSED(origin);
  45         UNUSED(options);
  46         UNUSED(callbacks);
  47
  48         /* flags */
  49         RETERR(isc_lex_getmastertoken(lexer, &token, isc_tokentype_string,
  50                                       ISC_FALSE));
  51         RETTOK(dns_keyflags_fromtext(&flags, &token.value.as_textregion));
  52         RETERR(uint16_tobuffer(flags, target));
  53
  54         /* protocol */
  55         RETERR(isc_lex_getmastertoken(lexer, &token, isc_tokentype_string,
  56                                       ISC_FALSE));
  57         RETTOK(dns_secproto_fromtext(&proto, &token.value.as_textregion));
  58         RETERR(mem_tobuffer(target, &proto, 1));
  59
  60         /* algorithm */
  61         RETERR(isc_lex_getmastertoken(lexer, &token, isc_tokentype_string,
  62                                       ISC_FALSE));
  63         RETTOK(dns_secalg_fromtext(&alg, &token.value.as_textregion));
  64         RETERR(mem_tobuffer(target, &alg, 1));
  65
  66         /* No Key? */
  67         if ((flags & 0xc000) == 0xc000)
  68                 return (ISC_R_SUCCESS);
  69
  70         return (isc_base64_tobuffer(lexer, target, -1));
  71 }
  72
  73 static inline isc_result_t
  74 totext_dnskey(ARGS_TOTEXT) {
  75         isc_region_t sr;
  76         char buf[sizeof("64000")];
  77         unsigned int flags;
  78         unsigned char algorithm;
  79
  80         REQUIRE(rdata->type == 48);
  81         REQUIRE(rdata->length != 0);
  82
  83         dns_rdata_toregion(rdata, &sr);
  84
  85         /* flags */
  86         flags = uint16_fromregion(&sr);
  87         isc_region_consume(&sr, 2);
  88         sprintf(buf, "%u", flags);
  89         RETERR(str_totext(buf, target));
  90         RETERR(str_totext(" ", target));
  91
  92         /* protocol */
  93         sprintf(buf, "%u", sr.base[0]);
  94         isc_region_consume(&sr, 1);
  95         RETERR(str_totext(buf, target));
  96         RETERR(str_totext(" ", target));
  97
  98         /* algorithm */
  99         algorithm = sr.base[0];
 100         sprintf(buf, "%u", algorithm);
 101         isc_region_consume(&sr, 1);
 102         RETERR(str_totext(buf, target));
 103
 104         /* No Key? */
 105         if ((flags & 0xc000) == 0xc000)
 106                 return (ISC_R_SUCCESS);
 107
 108         /* key */
 109         if ((tctx->flags & DNS_STYLEFLAG_MULTILINE) != 0)
 110                 RETERR(str_totext(" (", target));
 111         RETERR(str_totext(tctx->linebreak, target));
 112         RETERR(isc_base64_totext(&sr, tctx->width - 2,
 113                                  tctx->linebreak, target));
 114
 115         if ((tctx->flags & DNS_STYLEFLAG_COMMENT) != 0)
 116                 RETERR(str_totext(tctx->linebreak, target));
 117         else if ((tctx->flags & DNS_STYLEFLAG_MULTILINE) != 0)
 118                 RETERR(str_totext(" ", target));
 119
 120         if ((tctx->flags & DNS_STYLEFLAG_MULTILINE) != 0)
 121                 RETERR(str_totext(")", target));
 122
 123         if ((tctx->flags & DNS_STYLEFLAG_COMMENT) != 0) {
 124                 isc_region_t tmpr;
 125
 126                 RETERR(str_totext(" ; key id = ", target));
 127                 dns_rdata_toregion(rdata, &tmpr);
 128                 sprintf(buf, "%u", dst_region_computeid(&tmpr, algorithm));
 129                 RETERR(str_totext(buf, target));
 130         }
 131         return (ISC_R_SUCCESS);
 132 }
 133
 134 static inline isc_result_t
 135 fromwire_dnskey(ARGS_FROMWIRE) {
 136         isc_region_t sr;
 137
 138         REQUIRE(type == 48);
 139
 140         UNUSED(type);
 141         UNUSED(rdclass);
 142         UNUSED(dctx);
 143         UNUSED(options);
 144
 145         isc_buffer_activeregion(source, &sr);
 146         if (sr.length < 4)
 147                 return (ISC_R_UNEXPECTEDEND);
 148
 149         isc_buffer_forward(source, sr.length);
 150         return (mem_tobuffer(target, sr.base, sr.length));
 151 }
 152
 153 static inline isc_result_t
 154 towire_dnskey(ARGS_TOWIRE) {
 155         isc_region_t sr;
 156
 157         REQUIRE(rdata->type == 48);
 158         REQUIRE(rdata->length != 0);
 159
 160         UNUSED(cctx);
 161
 162         dns_rdata_toregion(rdata, &sr);
 163         return (mem_tobuffer(target, sr.base, sr.length));
 164 }
 165
 166 static inline int
 167 compare_dnskey(ARGS_COMPARE) {
 168         isc_region_t r1;
 169         isc_region_t r2;
 170
 171         REQUIRE(rdata1->type == rdata2->type);
 172         REQUIRE(rdata1->rdclass == rdata2->rdclass);
 173         REQUIRE(rdata1->type == 48);
 174         REQUIRE(rdata1->length != 0);
 175         REQUIRE(rdata2->length != 0);
 176
 177         dns_rdata_toregion(rdata1, &r1);
 178         dns_rdata_toregion(rdata2, &r2);
 179         return (isc_region_compare(&r1, &r2));
 180 }
 181
 182 static inline isc_result_t
 183 fromstruct_dnskey(ARGS_FROMSTRUCT) {
 184         dns_rdata_dnskey_t *dnskey = source;
 185
 186         REQUIRE(type == 48);
 187         REQUIRE(source != NULL);
 188         REQUIRE(dnskey->common.rdtype == type);
 189         REQUIRE(dnskey->common.rdclass == rdclass);
 190
 191         UNUSED(type);
 192         UNUSED(rdclass);
 193
 194         /* Flags */
 195         RETERR(uint16_tobuffer(dnskey->flags, target));
 196
 197         /* Protocol */
 198         RETERR(uint8_tobuffer(dnskey->protocol, target));
 199
 200         /* Algorithm */
 201         RETERR(uint8_tobuffer(dnskey->algorithm, target));
 202
 203         /* Data */
 204         return (mem_tobuffer(target, dnskey->data, dnskey->datalen));
 205 }
 206
 207 static inline isc_result_t
 208 tostruct_dnskey(ARGS_TOSTRUCT) {
 209         dns_rdata_dnskey_t *dnskey = target;
 210         isc_region_t sr;
 211
 212         REQUIRE(rdata->type == 48);
 213         REQUIRE(target != NULL);
 214         REQUIRE(rdata->length != 0);
 215
 216         dnskey->common.rdclass = rdata->rdclass;
 217         dnskey->common.rdtype = rdata->type;
 218         ISC_LINK_INIT(&dnskey->common, link);
 219
 220         dns_rdata_toregion(rdata, &sr);
 221
 222         /* Flags */
 223         if (sr.length < 2)
 224                 return (ISC_R_UNEXPECTEDEND);
 225         dnskey->flags = uint16_fromregion(&sr);
 226         isc_region_consume(&sr, 2);
 227
 228         /* Protocol */
 229         if (sr.length < 1)
 230                 return (ISC_R_UNEXPECTEDEND);
 231         dnskey->protocol = uint8_fromregion(&sr);
 232         isc_region_consume(&sr, 1);
 233
 234         /* Algorithm */
 235         if (sr.length < 1)
 236                 return (ISC_R_UNEXPECTEDEND);
 237         dnskey->algorithm = uint8_fromregion(&sr);
 238         isc_region_consume(&sr, 1);
 239
 240         /* Data */
 241         dnskey->datalen = sr.length;
 242         dnskey->data = mem_maybedup(mctx, sr.base, dnskey->datalen);
 243         if (dnskey->data == NULL)
 244                 return (ISC_R_NOMEMORY);
 245
 246         dnskey->mctx = mctx;
 247         return (ISC_R_SUCCESS);
 248 }
 249
 250 static inline void
 251 freestruct_dnskey(ARGS_FREESTRUCT) {
 252         dns_rdata_dnskey_t *dnskey = (dns_rdata_dnskey_t *) source;
 253
 254         REQUIRE(source != NULL);
 255         REQUIRE(dnskey->common.rdtype == 48);
 256
 257         if (dnskey->mctx == NULL)
 258                 return;
 259
 260         if (dnskey->data != NULL)
 261                 isc_mem_free(dnskey->mctx, dnskey->data);
 262         dnskey->mctx = NULL;
 263 }
 264
 265 static inline isc_result_t
 266 additionaldata_dnskey(ARGS_ADDLDATA) {
 267         REQUIRE(rdata->type == 48);
 268
 269         UNUSED(rdata);
 270         UNUSED(add);
 271         UNUSED(arg);
 272
 273         return (ISC_R_SUCCESS);
 274 }
 275
 276 static inline isc_result_t
 277 digest_dnskey(ARGS_DIGEST) {
 278         isc_region_t r;
 279
 280         REQUIRE(rdata->type == 48);
 281
 282         dns_rdata_toregion(rdata, &r);
 283
 284         return ((digest)(arg, &r));
 285 }
 286
 287 static inline isc_boolean_t
 288 checkowner_dnskey(ARGS_CHECKOWNER) {
 289
 290         REQUIRE(type == 48);
 291
 292         UNUSED(name);
 293         UNUSED(type);
 294         UNUSED(rdclass);
 295         UNUSED(wildcard);
 296
 297         return (ISC_TRUE);
 298 }
 299
 300 static inline isc_boolean_t
 301 checknames_dnskey(ARGS_CHECKNAMES) {
 302
 303         REQUIRE(rdata->type == 48);
 304
 305         UNUSED(rdata);
 306         UNUSED(owner);
 307         UNUSED(bad);
 308
 309         return (ISC_TRUE);
 310 }
 311
 312 #endif  /* RDATA_GENERIC_DNSKEY_48_C */