contrib/bind-9.2.4rc7/lib/dns/rdata/any_255/tsig_250.c

   1 /*
   2  * Copyright (C) 2004  Internet Systems Consortium, Inc. ("ISC")
   3  * Copyright (C) 1999-2001, 2003  Internet Software Consortium.
   4  *
   5  * Permission to use, copy, modify, and 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: tsig_250.c,v 1.52.2.3 2004/03/09 06:11:26 marka Exp $ */
  19
  20 /* Reviewed: Thu Mar 16 13:39:43 PST 2000 by gson */
  21
  22 #ifndef RDATA_ANY_255_TSIG_250_C
  23 #define RDATA_ANY_255_TSIG_250_C
  24
  25 #define RRTYPE_TSIG_ATTRIBUTES \
  26         (DNS_RDATATYPEATTR_META | DNS_RDATATYPEATTR_NOTQUESTION)
  27
  28 static inline isc_result_t
  29 fromtext_any_tsig(ARGS_FROMTEXT) {
  30         isc_token_t token;
  31         dns_name_t name;
  32         isc_uint64_t sigtime;
  33         isc_buffer_t buffer;
  34         dns_rcode_t rcode;
  35         long i;
  36         char *e;
  37
  38         REQUIRE(type == 250);
  39         REQUIRE(rdclass == 255);
  40
  41         UNUSED(type);
  42         UNUSED(rdclass);
  43         UNUSED(callbacks);
  44
  45         /*
  46          * Algorithm Name.
  47          */
  48         RETERR(isc_lex_getmastertoken(lexer, &token, isc_tokentype_string,
  49                                       ISC_FALSE));
  50         dns_name_init(&name, NULL);
  51         buffer_fromregion(&buffer, &token.value.as_region);
  52         origin = (origin != NULL) ? origin : dns_rootname;
  53         RETTOK(dns_name_fromtext(&name, &buffer, origin, downcase, target));
  54
  55         /*
  56          * Time Signed: 48 bits.
  57          */
  58         RETERR(isc_lex_getmastertoken(lexer, &token, isc_tokentype_string,
  59                                       ISC_FALSE));
  60         sigtime = isc_string_touint64(token.value.as_pointer, &e, 10);
  61         if (*e != 0)
  62                 RETTOK(DNS_R_SYNTAX);
  63         if ((sigtime >> 48) != 0)
  64                 RETTOK(ISC_R_RANGE);
  65         RETERR(uint16_tobuffer((isc_uint16_t)(sigtime >> 32), target));
  66         RETERR(uint32_tobuffer((isc_uint32_t)(sigtime & 0xffffffffU), target));
  67
  68         /*
  69          * Fudge.
  70          */
  71         RETERR(isc_lex_getmastertoken(lexer, &token, isc_tokentype_number,
  72                                       ISC_FALSE));
  73         if (token.value.as_ulong > 0xffffU)
  74                 RETTOK(ISC_R_RANGE);
  75         RETERR(uint16_tobuffer(token.value.as_ulong, target));
  76
  77         /*
  78          * Signature Size.
  79          */
  80         RETERR(isc_lex_getmastertoken(lexer, &token, isc_tokentype_number,
  81                                       ISC_FALSE));
  82         if (token.value.as_ulong > 0xffffU)
  83                 RETTOK(ISC_R_RANGE);
  84         RETERR(uint16_tobuffer(token.value.as_ulong, target));
  85
  86         /*
  87          * Signature.
  88          */
  89         RETERR(isc_base64_tobuffer(lexer, target, (int)token.value.as_ulong));
  90
  91         /*
  92          * Original ID.
  93          */
  94         RETERR(isc_lex_getmastertoken(lexer, &token, isc_tokentype_number,
  95                                       ISC_FALSE));
  96         if (token.value.as_ulong > 0xffffU)
  97                 RETTOK(ISC_R_RANGE);
  98         RETERR(uint16_tobuffer(token.value.as_ulong, target));
  99
 100         /*
 101          * Error.
 102          */
 103         RETERR(isc_lex_getmastertoken(lexer, &token, isc_tokentype_string,
 104                                       ISC_FALSE));
 105         if (dns_tsigrcode_fromtext(&rcode, &token.value.as_textregion)
 106                                 != ISC_R_SUCCESS)
 107         {
 108                 i = strtol(token.value.as_pointer, &e, 10);
 109                 if (*e != 0)
 110                         RETTOK(DNS_R_UNKNOWN);
 111                 if (i < 0 || i > 0xffff)
 112                         RETTOK(ISC_R_RANGE);
 113                 rcode = (dns_rcode_t)i;
 114         }
 115         RETERR(uint16_tobuffer(rcode, target));
 116
 117         /*
 118          * Other Len.
 119          */
 120         RETERR(isc_lex_getmastertoken(lexer, &token, isc_tokentype_number,
 121                                       ISC_FALSE));
 122         if (token.value.as_ulong > 0xffffU)
 123                 RETTOK(ISC_R_RANGE);
 124         RETERR(uint16_tobuffer(token.value.as_ulong, target));
 125
 126         /*
 127          * Other Data.
 128          */
 129         return (isc_base64_tobuffer(lexer, target, (int)token.value.as_ulong));
 130 }
 131
 132 static inline isc_result_t
 133 totext_any_tsig(ARGS_TOTEXT) {
 134         isc_region_t sr;
 135         isc_region_t sigr;
 136         char buf[sizeof "281474976710655 "];
 137         char *bufp;
 138         dns_name_t name;
 139         dns_name_t prefix;
 140         isc_boolean_t sub;
 141         isc_uint64_t sigtime;
 142         unsigned short n;
 143
 144         REQUIRE(rdata->type == 250);
 145         REQUIRE(rdata->rdclass == 255);
 146         REQUIRE(rdata->length != 0);
 147
 148         dns_rdata_toregion(rdata, &sr);
 149         /*
 150          * Algorithm Name.
 151          */
 152         dns_name_init(&name, NULL);
 153         dns_name_init(&prefix, NULL);
 154         dns_name_fromregion(&name, &sr);
 155         sub = name_prefix(&name, tctx->origin, &prefix);
 156         RETERR(dns_name_totext(&prefix, sub, target));
 157         RETERR(str_totext(" ", target));
 158         isc_region_consume(&sr, name_length(&name));
 159
 160         /*
 161          * Time Signed.
 162          */
 163         sigtime = ((isc_uint64_t)sr.base[0] << 40) |
 164                   ((isc_uint64_t)sr.base[1] << 32) |
 165                   (sr.base[2] << 24) | (sr.base[3] << 16) |
 166                   (sr.base[4] << 8) | sr.base[5];
 167         isc_region_consume(&sr, 6);
 168         bufp = &buf[sizeof buf - 1];
 169         *bufp-- = 0;
 170         *bufp-- = ' ';
 171         do {
 172                 *bufp-- = decdigits[sigtime % 10];
 173                 sigtime /= 10;
 174         } while (sigtime != 0);
 175         bufp++;
 176         RETERR(str_totext(bufp, target));
 177
 178         /*
 179          * Fudge.
 180          */
 181         n = uint16_fromregion(&sr);
 182         isc_region_consume(&sr, 2);
 183         sprintf(buf, "%u ", n);
 184         RETERR(str_totext(buf, target));
 185
 186         /*
 187          * Signature Size.
 188          */
 189         n = uint16_fromregion(&sr);
 190         isc_region_consume(&sr, 2);
 191         sprintf(buf, "%u", n);
 192         RETERR(str_totext(buf, target));
 193
 194         /*
 195          * Signature.
 196          */
 197         REQUIRE(n <= sr.length);
 198         sigr = sr;
 199         sigr.length = n;
 200         if ((tctx->flags & DNS_STYLEFLAG_MULTILINE) != 0)
 201                 RETERR(str_totext(" (", target));
 202         RETERR(str_totext(tctx->linebreak, target));
 203         RETERR(isc_base64_totext(&sigr, tctx->width - 2,
 204                                  tctx->linebreak, target));
 205         if ((tctx->flags & DNS_STYLEFLAG_MULTILINE) != 0)
 206                 RETERR(str_totext(" ) ", target));
 207         else
 208                 RETERR(str_totext(" ", target));
 209         isc_region_consume(&sr, n);
 210
 211         /*
 212          * Original ID.
 213          */
 214         n = uint16_fromregion(&sr);
 215         isc_region_consume(&sr, 2);
 216         sprintf(buf, "%u ", n);
 217         RETERR(str_totext(buf, target));
 218
 219         /*
 220          * Error.
 221          */
 222         n = uint16_fromregion(&sr);
 223         isc_region_consume(&sr, 2);
 224         if (dns_tsigrcode_totext((dns_rcode_t)n, target) == ISC_R_SUCCESS)
 225                 RETERR(str_totext(" ", target));
 226         else {
 227                 sprintf(buf, "%u ", n);
 228                 RETERR(str_totext(buf, target));
 229         }
 230
 231         /*
 232          * Other Size.
 233          */
 234         n = uint16_fromregion(&sr);
 235         isc_region_consume(&sr, 2);
 236         sprintf(buf, "%u ", n);
 237         RETERR(str_totext(buf, target));
 238
 239         /*
 240          * Other.
 241          */
 242         return (isc_base64_totext(&sr, 60, " ", target));
 243 }
 244
 245 static inline isc_result_t
 246 fromwire_any_tsig(ARGS_FROMWIRE) {
 247         isc_region_t sr;
 248         dns_name_t name;
 249         unsigned long n;
 250
 251         REQUIRE(type == 250);
 252         REQUIRE(rdclass == 255);
 253
 254         UNUSED(type);
 255         UNUSED(rdclass);
 256
 257         dns_decompress_setmethods(dctx, DNS_COMPRESS_NONE);
 258
 259         /*
 260          * Algorithm Name.
 261          */
 262         dns_name_init(&name, NULL);
 263         RETERR(dns_name_fromwire(&name, source, dctx, downcase, target));
 264
 265         isc_buffer_activeregion(source, &sr);
 266         /*
 267          * Time Signed + Fudge.
 268          */
 269         if (sr.length < 8)
 270                 return (ISC_R_UNEXPECTEDEND);
 271         RETERR(mem_tobuffer(target, sr.base, 8));
 272         isc_region_consume(&sr, 8);
 273         isc_buffer_forward(source, 8);
 274
 275         /*
 276          * Signature Length + Signature.
 277          */
 278         if (sr.length < 2)
 279                 return (ISC_R_UNEXPECTEDEND);
 280         n = uint16_fromregion(&sr);
 281         if (sr.length < n + 2)
 282                 return (ISC_R_UNEXPECTEDEND);
 283         RETERR(mem_tobuffer(target, sr.base, n + 2));
 284         isc_region_consume(&sr, n + 2);
 285         isc_buffer_forward(source, n + 2);
 286
 287         /*
 288          * Original ID + Error.
 289          */
 290         if (sr.length < 4)
 291                 return (ISC_R_UNEXPECTEDEND);
 292         RETERR(mem_tobuffer(target, sr.base,  4));
 293         isc_region_consume(&sr, 4);
 294         isc_buffer_forward(source, 4);
 295
 296         /*
 297          * Other Length + Other.
 298          */
 299         if (sr.length < 2)
 300                 return (ISC_R_UNEXPECTEDEND);
 301         n = uint16_fromregion(&sr);
 302         if (sr.length < n + 2)
 303                 return (ISC_R_UNEXPECTEDEND);
 304         isc_buffer_forward(source, n + 2);
 305         return (mem_tobuffer(target, sr.base, n + 2));
 306 }
 307
 308 static inline isc_result_t
 309 towire_any_tsig(ARGS_TOWIRE) {
 310         isc_region_t sr;
 311         dns_name_t name;
 312         dns_offsets_t offsets;
 313
 314         REQUIRE(rdata->type == 250);
 315         REQUIRE(rdata->rdclass == 255);
 316         REQUIRE(rdata->length != 0);
 317
 318         dns_compress_setmethods(cctx, DNS_COMPRESS_NONE);
 319         dns_rdata_toregion(rdata, &sr);
 320         dns_name_init(&name, offsets);
 321         dns_name_fromregion(&name, &sr);
 322         RETERR(dns_name_towire(&name, cctx, target));
 323         isc_region_consume(&sr, name_length(&name));
 324         return (mem_tobuffer(target, sr.base, sr.length));
 325 }
 326
 327 static inline int
 328 compare_any_tsig(ARGS_COMPARE) {
 329         isc_region_t r1;
 330         isc_region_t r2;
 331         dns_name_t name1;
 332         dns_name_t name2;
 333         int order;
 334
 335         REQUIRE(rdata1->type == rdata2->type);
 336         REQUIRE(rdata1->rdclass == rdata2->rdclass);
 337         REQUIRE(rdata1->type == 250);
 338         REQUIRE(rdata1->rdclass == 255);
 339         REQUIRE(rdata1->length != 0);
 340         REQUIRE(rdata2->length != 0);
 341
 342         dns_rdata_toregion(rdata1, &r1);
 343         dns_rdata_toregion(rdata2, &r2);
 344         dns_name_init(&name1, NULL);
 345         dns_name_init(&name2, NULL);
 346         dns_name_fromregion(&name1, &r1);
 347         dns_name_fromregion(&name2, &r2);
 348         order = dns_name_rdatacompare(&name1, &name2);
 349         if (order != 0)
 350                 return (order);
 351         isc_region_consume(&r1, name_length(&name1));
 352         isc_region_consume(&r2, name_length(&name2));
 353         return (compare_region(&r1, &r2));
 354 }
 355
 356 static inline isc_result_t
 357 fromstruct_any_tsig(ARGS_FROMSTRUCT) {
 358         dns_rdata_any_tsig_t *tsig = source;
 359         isc_region_t tr;
 360
 361         REQUIRE(type == 250);
 362         REQUIRE(rdclass == 255);
 363         REQUIRE(source != NULL);
 364         REQUIRE(tsig->common.rdclass == rdclass);
 365         REQUIRE(tsig->common.rdtype == type);
 366
 367         UNUSED(type);
 368         UNUSED(rdclass);
 369
 370         /*
 371          * Algorithm Name.
 372          */
 373         RETERR(name_tobuffer(&tsig->algorithm, target));
 374
 375         isc_buffer_availableregion(target, &tr);
 376         if (tr.length < 6 + 2 + 2)
 377                 return (ISC_R_NOSPACE);
 378
 379         /*
 380          * Time Signed: 48 bits.
 381          */
 382         RETERR(uint16_tobuffer((isc_uint16_t)(tsig->timesigned >> 32),
 383                                target));
 384         RETERR(uint32_tobuffer((isc_uint32_t)(tsig->timesigned & 0xffffffffU),
 385                                target));
 386
 387         /*
 388          * Fudge.
 389          */
 390         RETERR(uint16_tobuffer(tsig->fudge, target));
 391
 392         /*
 393          * Signature Size.
 394          */
 395         RETERR(uint16_tobuffer(tsig->siglen, target));
 396
 397         /*
 398          * Signature.
 399          */
 400         RETERR(mem_tobuffer(target, tsig->signature, tsig->siglen));
 401
 402         isc_buffer_availableregion(target, &tr);
 403         if (tr.length < 2 + 2 + 2)
 404                 return (ISC_R_NOSPACE);
 405
 406         /*
 407          * Original ID.
 408          */
 409         RETERR(uint16_tobuffer(tsig->originalid, target));
 410
 411         /*
 412          * Error.
 413          */
 414         RETERR(uint16_tobuffer(tsig->error, target));
 415
 416         /*
 417          * Other Len.
 418          */
 419         RETERR(uint16_tobuffer(tsig->otherlen, target));
 420
 421         /*
 422          * Other Data.
 423          */
 424         return (mem_tobuffer(target, tsig->other, tsig->otherlen));
 425 }
 426
 427 static inline isc_result_t
 428 tostruct_any_tsig(ARGS_TOSTRUCT) {
 429         dns_rdata_any_tsig_t *tsig;
 430         dns_name_t alg;
 431         isc_region_t sr;
 432
 433         REQUIRE(rdata->type == 250);
 434         REQUIRE(rdata->rdclass == 255);
 435         REQUIRE(rdata->length != 0);
 436
 437         tsig = (dns_rdata_any_tsig_t *) target;
 438         tsig->common.rdclass = rdata->rdclass;
 439         tsig->common.rdtype = rdata->type;
 440         ISC_LINK_INIT(&tsig->common, link);
 441
 442         dns_rdata_toregion(rdata, &sr);
 443
 444         /*
 445          * Algorithm Name.
 446          */
 447         dns_name_init(&alg, NULL);
 448         dns_name_fromregion(&alg, &sr);
 449         dns_name_init(&tsig->algorithm, NULL);
 450         RETERR(name_duporclone(&alg, mctx, &tsig->algorithm));
 451
 452         isc_region_consume(&sr, name_length(&tsig->algorithm));
 453
 454         /*
 455          * Time Signed.
 456          */
 457         INSIST(sr.length >= 6);
 458         tsig->timesigned = ((isc_uint64_t)sr.base[0] << 40) |
 459                            ((isc_uint64_t)sr.base[1] << 32) |
 460                            (sr.base[2] << 24) | (sr.base[3] << 16) |
 461                            (sr.base[4] << 8) | sr.base[5];
 462         isc_region_consume(&sr, 6);
 463
 464         /*
 465          * Fudge.
 466          */
 467         tsig->fudge = uint16_fromregion(&sr);
 468         isc_region_consume(&sr, 2);
 469
 470         /*
 471          * Signature Size.
 472          */
 473         tsig->siglen = uint16_fromregion(&sr);
 474         isc_region_consume(&sr, 2);
 475
 476         /*
 477          * Signature.
 478          */
 479         INSIST(sr.length >= tsig->siglen);
 480         tsig->signature = mem_maybedup(mctx, sr.base, tsig->siglen);
 481         if (tsig->signature == NULL)
 482                 goto cleanup;
 483         isc_region_consume(&sr, tsig->siglen);
 484
 485         /*
 486          * Original ID.
 487          */
 488         tsig->originalid = uint16_fromregion(&sr);
 489         isc_region_consume(&sr, 2);
 490
 491         /*
 492          * Error.
 493          */
 494         tsig->error = uint16_fromregion(&sr);
 495         isc_region_consume(&sr, 2);
 496
 497         /*
 498          * Other Size.
 499          */
 500         tsig->otherlen = uint16_fromregion(&sr);
 501         isc_region_consume(&sr, 2);
 502
 503         /*
 504          * Other.
 505          */
 506         INSIST(sr.length == tsig->otherlen);
 507         tsig->other = mem_maybedup(mctx, sr.base, tsig->otherlen);
 508         if (tsig->other == NULL)
 509                 goto cleanup;
 510
 511         tsig->mctx = mctx;
 512         return (ISC_R_SUCCESS);
 513
 514  cleanup:
 515         if (mctx != NULL)
 516                 dns_name_free(&tsig->algorithm, tsig->mctx);
 517         if (mctx != NULL && tsig->signature != NULL)
 518                 isc_mem_free(mctx, tsig->signature);
 519         return (ISC_R_NOMEMORY);
 520 }
 521
 522 static inline void
 523 freestruct_any_tsig(ARGS_FREESTRUCT) {
 524         dns_rdata_any_tsig_t *tsig = (dns_rdata_any_tsig_t *) source;
 525
 526         REQUIRE(source != NULL);
 527         REQUIRE(tsig->common.rdclass == 255);
 528         REQUIRE(tsig->common.rdtype == 250);
 529
 530         if (tsig->mctx == NULL)
 531                 return;
 532
 533         dns_name_free(&tsig->algorithm, tsig->mctx);
 534         if (tsig->signature != NULL)
 535                 isc_mem_free(tsig->mctx, tsig->signature);
 536         if (tsig->other != NULL)
 537                 isc_mem_free(tsig->mctx, tsig->other);
 538         tsig->mctx = NULL;
 539 }
 540
 541 static inline isc_result_t
 542 additionaldata_any_tsig(ARGS_ADDLDATA) {
 543         REQUIRE(rdata->type == 250);
 544         REQUIRE(rdata->rdclass == 255);
 545
 546         UNUSED(rdata);
 547         UNUSED(add);
 548         UNUSED(arg);
 549
 550         return (ISC_R_SUCCESS);
 551 }
 552
 553 static inline isc_result_t
 554 digest_any_tsig(ARGS_DIGEST) {
 555
 556         REQUIRE(rdata->type == 250);
 557         REQUIRE(rdata->rdclass == 255);
 558
 559         UNUSED(rdata);
 560         UNUSED(digest);
 561         UNUSED(arg);
 562
 563         return (ISC_R_NOTIMPLEMENTED);
 564 }
 565
 566 #endif  /* RDATA_ANY_255_TSIG_250_C */