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Diffstat (limited to '')
| -rw-r--r-- | lib/dns/rdata/generic/nsec3param_51.c | 321 |
1 files changed, 321 insertions, 0 deletions
diff --git a/lib/dns/rdata/generic/nsec3param_51.c b/lib/dns/rdata/generic/nsec3param_51.c new file mode 100644 index 0000000..1d08d72 --- /dev/null +++ b/lib/dns/rdata/generic/nsec3param_51.c @@ -0,0 +1,321 @@ +/* + * Copyright (C) Internet Systems Consortium, Inc. ("ISC") + * + * SPDX-License-Identifier: MPL-2.0 + * + * This Source Code Form is subject to the terms of the Mozilla Public + * License, v. 2.0. If a copy of the MPL was not distributed with this + * file, you can obtain one at https://mozilla.org/MPL/2.0/. + * + * See the COPYRIGHT file distributed with this work for additional + * information regarding copyright ownership. + */ + +/* + * Copyright (C) 2004 Nominet, Ltd. + * + * Permission to use, copy, modify, and distribute this software for any + * purpose with or without fee is hereby granted, provided that the above + * copyright notice and this permission notice appear in all copies. + * + * THE SOFTWARE IS PROVIDED "AS IS" AND NOMINET DISCLAIMS ALL WARRANTIES WITH + * REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY + * AND FITNESS. IN NO EVENT SHALL ISC BE LIABLE FOR ANY SPECIAL, DIRECT, + * INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM + * LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE + * OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR + * PERFORMANCE OF THIS SOFTWARE. + */ + +/* RFC 5155 */ + +#ifndef RDATA_GENERIC_NSEC3PARAM_51_C +#define RDATA_GENERIC_NSEC3PARAM_51_C + +#include <isc/base32.h> +#include <isc/iterated_hash.h> + +#define RRTYPE_NSEC3PARAM_ATTRIBUTES (DNS_RDATATYPEATTR_DNSSEC) + +static isc_result_t +fromtext_nsec3param(ARGS_FROMTEXT) { + isc_token_t token; + unsigned int flags = 0; + unsigned char hashalg; + + REQUIRE(type == dns_rdatatype_nsec3param); + + UNUSED(type); + UNUSED(rdclass); + UNUSED(callbacks); + UNUSED(origin); + UNUSED(options); + + /* Hash. */ + RETERR(isc_lex_getmastertoken(lexer, &token, isc_tokentype_string, + false)); + RETTOK(dns_hashalg_fromtext(&hashalg, &token.value.as_textregion)); + RETERR(uint8_tobuffer(hashalg, target)); + + /* Flags. */ + RETERR(isc_lex_getmastertoken(lexer, &token, isc_tokentype_number, + false)); + flags = token.value.as_ulong; + if (flags > 255U) { + RETTOK(ISC_R_RANGE); + } + RETERR(uint8_tobuffer(flags, target)); + + /* Iterations. */ + RETERR(isc_lex_getmastertoken(lexer, &token, isc_tokentype_number, + false)); + if (token.value.as_ulong > 0xffffU) { + RETTOK(ISC_R_RANGE); + } + RETERR(uint16_tobuffer(token.value.as_ulong, target)); + + /* Salt. */ + RETERR(isc_lex_getmastertoken(lexer, &token, isc_tokentype_string, + false)); + if (token.value.as_textregion.length > (255 * 2)) { + RETTOK(DNS_R_TEXTTOOLONG); + } + if (strcmp(DNS_AS_STR(token), "-") == 0) { + RETERR(uint8_tobuffer(0, target)); + } else { + RETERR(uint8_tobuffer(strlen(DNS_AS_STR(token)) / 2, target)); + RETERR(isc_hex_decodestring(DNS_AS_STR(token), target)); + } + + return (ISC_R_SUCCESS); +} + +static isc_result_t +totext_nsec3param(ARGS_TOTEXT) { + isc_region_t sr; + unsigned int i, j; + unsigned char hash; + unsigned char flags; + char buf[sizeof("65535 ")]; + uint32_t iterations; + + REQUIRE(rdata->type == dns_rdatatype_nsec3param); + REQUIRE(rdata->length != 0); + + UNUSED(tctx); + + dns_rdata_toregion(rdata, &sr); + + hash = uint8_fromregion(&sr); + isc_region_consume(&sr, 1); + + flags = uint8_fromregion(&sr); + isc_region_consume(&sr, 1); + + iterations = uint16_fromregion(&sr); + isc_region_consume(&sr, 2); + + snprintf(buf, sizeof(buf), "%u ", hash); + RETERR(str_totext(buf, target)); + + snprintf(buf, sizeof(buf), "%u ", flags); + RETERR(str_totext(buf, target)); + + snprintf(buf, sizeof(buf), "%u ", iterations); + RETERR(str_totext(buf, target)); + + j = uint8_fromregion(&sr); + isc_region_consume(&sr, 1); + INSIST(j <= sr.length); + + if (j != 0) { + i = sr.length; + sr.length = j; + RETERR(isc_hex_totext(&sr, 1, "", target)); + sr.length = i - j; + } else { + RETERR(str_totext("-", target)); + } + + return (ISC_R_SUCCESS); +} + +static isc_result_t +fromwire_nsec3param(ARGS_FROMWIRE) { + isc_region_t sr, rr; + unsigned int saltlen; + + REQUIRE(type == dns_rdatatype_nsec3param); + + UNUSED(type); + UNUSED(rdclass); + UNUSED(options); + UNUSED(dctx); + + isc_buffer_activeregion(source, &sr); + rr = sr; + + /* hash(1), flags(1), iterations(2), saltlen(1) */ + if (sr.length < 5U) { + RETERR(DNS_R_FORMERR); + } + saltlen = sr.base[4]; + isc_region_consume(&sr, 5); + + if (sr.length != saltlen) { + RETERR(DNS_R_FORMERR); + } + isc_region_consume(&sr, saltlen); + RETERR(mem_tobuffer(target, rr.base, rr.length)); + isc_buffer_forward(source, rr.length); + return (ISC_R_SUCCESS); +} + +static isc_result_t +towire_nsec3param(ARGS_TOWIRE) { + isc_region_t sr; + + REQUIRE(rdata->type == dns_rdatatype_nsec3param); + REQUIRE(rdata->length != 0); + + UNUSED(cctx); + + dns_rdata_toregion(rdata, &sr); + return (mem_tobuffer(target, sr.base, sr.length)); +} + +static int +compare_nsec3param(ARGS_COMPARE) { + isc_region_t r1; + isc_region_t r2; + + REQUIRE(rdata1->type == rdata2->type); + REQUIRE(rdata1->rdclass == rdata2->rdclass); + REQUIRE(rdata1->type == dns_rdatatype_nsec3param); + REQUIRE(rdata1->length != 0); + REQUIRE(rdata2->length != 0); + + dns_rdata_toregion(rdata1, &r1); + dns_rdata_toregion(rdata2, &r2); + return (isc_region_compare(&r1, &r2)); +} + +static isc_result_t +fromstruct_nsec3param(ARGS_FROMSTRUCT) { + dns_rdata_nsec3param_t *nsec3param = source; + + REQUIRE(type == dns_rdatatype_nsec3param); + REQUIRE(nsec3param != NULL); + REQUIRE(nsec3param->common.rdtype == type); + REQUIRE(nsec3param->common.rdclass == rdclass); + + UNUSED(type); + UNUSED(rdclass); + + RETERR(uint8_tobuffer(nsec3param->hash, target)); + RETERR(uint8_tobuffer(nsec3param->flags, target)); + RETERR(uint16_tobuffer(nsec3param->iterations, target)); + RETERR(uint8_tobuffer(nsec3param->salt_length, target)); + RETERR(mem_tobuffer(target, nsec3param->salt, nsec3param->salt_length)); + return (ISC_R_SUCCESS); +} + +static isc_result_t +tostruct_nsec3param(ARGS_TOSTRUCT) { + isc_region_t region; + dns_rdata_nsec3param_t *nsec3param = target; + + REQUIRE(rdata->type == dns_rdatatype_nsec3param); + REQUIRE(nsec3param != NULL); + REQUIRE(rdata->length != 0); + + nsec3param->common.rdclass = rdata->rdclass; + nsec3param->common.rdtype = rdata->type; + ISC_LINK_INIT(&nsec3param->common, link); + + region.base = rdata->data; + region.length = rdata->length; + nsec3param->hash = uint8_consume_fromregion(®ion); + nsec3param->flags = uint8_consume_fromregion(®ion); + nsec3param->iterations = uint16_consume_fromregion(®ion); + + nsec3param->salt_length = uint8_consume_fromregion(®ion); + INSIST(nsec3param->salt_length == region.length); + nsec3param->salt = mem_maybedup(mctx, region.base, + nsec3param->salt_length); + if (nsec3param->salt == NULL) { + return (ISC_R_NOMEMORY); + } + isc_region_consume(®ion, nsec3param->salt_length); + + nsec3param->mctx = mctx; + return (ISC_R_SUCCESS); +} + +static void +freestruct_nsec3param(ARGS_FREESTRUCT) { + dns_rdata_nsec3param_t *nsec3param = source; + + REQUIRE(nsec3param != NULL); + REQUIRE(nsec3param->common.rdtype == dns_rdatatype_nsec3param); + + if (nsec3param->mctx == NULL) { + return; + } + + if (nsec3param->salt != NULL) { + isc_mem_free(nsec3param->mctx, nsec3param->salt); + } + nsec3param->mctx = NULL; +} + +static isc_result_t +additionaldata_nsec3param(ARGS_ADDLDATA) { + REQUIRE(rdata->type == dns_rdatatype_nsec3param); + + UNUSED(rdata); + UNUSED(add); + UNUSED(arg); + + return (ISC_R_SUCCESS); +} + +static isc_result_t +digest_nsec3param(ARGS_DIGEST) { + isc_region_t r; + + REQUIRE(rdata->type == dns_rdatatype_nsec3param); + + dns_rdata_toregion(rdata, &r); + return ((digest)(arg, &r)); +} + +static bool +checkowner_nsec3param(ARGS_CHECKOWNER) { + REQUIRE(type == dns_rdatatype_nsec3param); + + UNUSED(name); + UNUSED(type); + UNUSED(rdclass); + UNUSED(wildcard); + + return (true); +} + +static bool +checknames_nsec3param(ARGS_CHECKNAMES) { + REQUIRE(rdata->type == dns_rdatatype_nsec3param); + + UNUSED(rdata); + UNUSED(owner); + UNUSED(bad); + + return (true); +} + +static int +casecompare_nsec3param(ARGS_COMPARE) { + return (compare_nsec3param(rdata1, rdata2)); +} + +#endif /* RDATA_GENERIC_NSEC3PARAM_51_C */ |