external/bsd/bind/dist/lib/dns/rdata/generic/sshfp_44.c

   1 /*      $NetBSD$        */
   2
   3 /*
   4  * Copyright (C) 2004, 2006, 2007, 2009  Internet Systems Consortium, Inc. ("ISC")
   5  * Copyright (C) 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: sshfp_44.c,v 1.9 2009/12/04 22:06:37 tbox Exp */
  21
  22 /* RFC 4255 */
  23
  24 #ifndef RDATA_GENERIC_SSHFP_44_C
  25 #define RDATA_GENERIC_SSHFP_44_C
  26
  27 #define RRTYPE_SSHFP_ATTRIBUTES (0)
  28
  29 static inline isc_result_t
  30 fromtext_sshfp(ARGS_FROMTEXT) {
  31         isc_token_t token;
  32
  33         REQUIRE(type == 44);
  34
  35         UNUSED(type);
  36         UNUSED(rdclass);
  37         UNUSED(origin);
  38         UNUSED(options);
  39         UNUSED(callbacks);
  40
  41         /*
  42          * Algorithm.
  43          */
  44         RETERR(isc_lex_getmastertoken(lexer, &token, isc_tokentype_number,
  45                                       ISC_FALSE));
  46         if (token.value.as_ulong > 0xffU)
  47                 RETTOK(ISC_R_RANGE);
  48         RETERR(uint8_tobuffer(token.value.as_ulong, target));
  49
  50         /*
  51          * Digest type.
  52          */
  53         RETERR(isc_lex_getmastertoken(lexer, &token, isc_tokentype_number,
  54                                       ISC_FALSE));
  55         if (token.value.as_ulong > 0xffU)
  56                 RETTOK(ISC_R_RANGE);
  57         RETERR(uint8_tobuffer(token.value.as_ulong, target));
  58         type = (isc_uint16_t) token.value.as_ulong;
  59
  60         /*
  61          * Digest.
  62          */
  63         return (isc_hex_tobuffer(lexer, target, -1));
  64 }
  65
  66 static inline isc_result_t
  67 totext_sshfp(ARGS_TOTEXT) {
  68         isc_region_t sr;
  69         char buf[sizeof("64000 ")];
  70         unsigned int n;
  71
  72         REQUIRE(rdata->type == 44);
  73         REQUIRE(rdata->length != 0);
  74
  75         UNUSED(tctx);
  76
  77         dns_rdata_toregion(rdata, &sr);
  78
  79         /*
  80          * Algorithm.
  81          */
  82         n = uint8_fromregion(&sr);
  83         isc_region_consume(&sr, 1);
  84         sprintf(buf, "%u ", n);
  85         RETERR(str_totext(buf, target));
  86
  87         /*
  88          * Digest type.
  89          */
  90         n = uint8_fromregion(&sr);
  91         isc_region_consume(&sr, 1);
  92         sprintf(buf, "%u", n);
  93         RETERR(str_totext(buf, target));
  94
  95         /*
  96          * Digest.
  97          */
  98         if ((tctx->flags & DNS_STYLEFLAG_MULTILINE) != 0)
  99                 RETERR(str_totext(" (", target));
 100         RETERR(str_totext(tctx->linebreak, target));
 101         RETERR(isc_hex_totext(&sr, tctx->width - 2, tctx->linebreak, target));
 102         if ((tctx->flags & DNS_STYLEFLAG_MULTILINE) != 0)
 103                 RETERR(str_totext(" )", target));
 104         return (ISC_R_SUCCESS);
 105 }
 106
 107 static inline isc_result_t
 108 fromwire_sshfp(ARGS_FROMWIRE) {
 109         isc_region_t sr;
 110
 111         REQUIRE(type == 44);
 112
 113         UNUSED(type);
 114         UNUSED(rdclass);
 115         UNUSED(dctx);
 116         UNUSED(options);
 117
 118         isc_buffer_activeregion(source, &sr);
 119         if (sr.length < 4)
 120                 return (ISC_R_UNEXPECTEDEND);
 121
 122         isc_buffer_forward(source, sr.length);
 123         return (mem_tobuffer(target, sr.base, sr.length));
 124 }
 125
 126 static inline isc_result_t
 127 towire_sshfp(ARGS_TOWIRE) {
 128         isc_region_t sr;
 129
 130         REQUIRE(rdata->type == 44);
 131         REQUIRE(rdata->length != 0);
 132
 133         UNUSED(cctx);
 134
 135         dns_rdata_toregion(rdata, &sr);
 136         return (mem_tobuffer(target, sr.base, sr.length));
 137 }
 138
 139 static inline int
 140 compare_sshfp(ARGS_COMPARE) {
 141         isc_region_t r1;
 142         isc_region_t r2;
 143
 144         REQUIRE(rdata1->type == rdata2->type);
 145         REQUIRE(rdata1->rdclass == rdata2->rdclass);
 146         REQUIRE(rdata1->type == 44);
 147         REQUIRE(rdata1->length != 0);
 148         REQUIRE(rdata2->length != 0);
 149
 150         dns_rdata_toregion(rdata1, &r1);
 151         dns_rdata_toregion(rdata2, &r2);
 152         return (isc_region_compare(&r1, &r2));
 153 }
 154
 155 static inline isc_result_t
 156 fromstruct_sshfp(ARGS_FROMSTRUCT) {
 157         dns_rdata_sshfp_t *sshfp = source;
 158
 159         REQUIRE(type == 44);
 160         REQUIRE(source != NULL);
 161         REQUIRE(sshfp->common.rdtype == type);
 162         REQUIRE(sshfp->common.rdclass == rdclass);
 163
 164         UNUSED(type);
 165         UNUSED(rdclass);
 166
 167         RETERR(uint8_tobuffer(sshfp->algorithm, target));
 168         RETERR(uint8_tobuffer(sshfp->digest_type, target));
 169
 170         return (mem_tobuffer(target, sshfp->digest, sshfp->length));
 171 }
 172
 173 static inline isc_result_t
 174 tostruct_sshfp(ARGS_TOSTRUCT) {
 175         dns_rdata_sshfp_t *sshfp = target;
 176         isc_region_t region;
 177
 178         REQUIRE(rdata->type == 44);
 179         REQUIRE(target != NULL);
 180         REQUIRE(rdata->length != 0);
 181
 182         sshfp->common.rdclass = rdata->rdclass;
 183         sshfp->common.rdtype = rdata->type;
 184         ISC_LINK_INIT(&sshfp->common, link);
 185
 186         dns_rdata_toregion(rdata, &region);
 187
 188         sshfp->algorithm = uint8_fromregion(&region);
 189         isc_region_consume(&region, 1);
 190         sshfp->digest_type = uint8_fromregion(&region);
 191         isc_region_consume(&region, 1);
 192         sshfp->length = region.length;
 193
 194         sshfp->digest = mem_maybedup(mctx, region.base, region.length);
 195         if (sshfp->digest == NULL)
 196                 return (ISC_R_NOMEMORY);
 197
 198         sshfp->mctx = mctx;
 199         return (ISC_R_SUCCESS);
 200 }
 201
 202 static inline void
 203 freestruct_sshfp(ARGS_FREESTRUCT) {
 204         dns_rdata_sshfp_t *sshfp = source;
 205
 206         REQUIRE(sshfp != NULL);
 207         REQUIRE(sshfp->common.rdtype == 44);
 208
 209         if (sshfp->mctx == NULL)
 210                 return;
 211
 212         if (sshfp->digest != NULL)
 213                 isc_mem_free(sshfp->mctx, sshfp->digest);
 214         sshfp->mctx = NULL;
 215 }
 216
 217 static inline isc_result_t
 218 additionaldata_sshfp(ARGS_ADDLDATA) {
 219         REQUIRE(rdata->type == 44);
 220
 221         UNUSED(rdata);
 222         UNUSED(add);
 223         UNUSED(arg);
 224
 225         return (ISC_R_SUCCESS);
 226 }
 227
 228 static inline isc_result_t
 229 digest_sshfp(ARGS_DIGEST) {
 230         isc_region_t r;
 231
 232         REQUIRE(rdata->type == 44);
 233
 234         dns_rdata_toregion(rdata, &r);
 235
 236         return ((digest)(arg, &r));
 237 }
 238
 239 static inline isc_boolean_t
 240 checkowner_sshfp(ARGS_CHECKOWNER) {
 241
 242         REQUIRE(type == 44);
 243
 244         UNUSED(name);
 245         UNUSED(type);
 246         UNUSED(rdclass);
 247         UNUSED(wildcard);
 248
 249         return (ISC_TRUE);
 250 }
 251
 252 static inline isc_boolean_t
 253 checknames_sshfp(ARGS_CHECKNAMES) {
 254
 255         REQUIRE(rdata->type == 44);
 256
 257         UNUSED(rdata);
 258         UNUSED(owner);
 259         UNUSED(bad);
 260
 261         return (ISC_TRUE);
 262 }
 263
 264 static inline int
 265 casecompare_sshfp(ARGS_COMPARE) {
 266         return (compare_sshfp(rdata1, rdata2));
 267 }
 268
 269 #endif  /* RDATA_GENERIC_SSHFP_44_C */