/* $NetBSD: tkey_249.c,v 1.7.2.2 2024/02/25 15:47:05 martin Exp $ */ /* * 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. */ /* draft-ietf-dnsext-tkey-01.txt */ #ifndef RDATA_GENERIC_TKEY_249_C #define RDATA_GENERIC_TKEY_249_C #define RRTYPE_TKEY_ATTRIBUTES (DNS_RDATATYPEATTR_META) static isc_result_t fromtext_tkey(ARGS_FROMTEXT) { isc_token_t token; dns_rcode_t rcode; dns_name_t name; isc_buffer_t buffer; long i; char *e; REQUIRE(type == dns_rdatatype_tkey); UNUSED(type); UNUSED(rdclass); UNUSED(callbacks); /* * Algorithm. */ RETERR(isc_lex_getmastertoken(lexer, &token, isc_tokentype_string, false)); dns_name_init(&name, NULL); buffer_fromregion(&buffer, &token.value.as_region); if (origin == NULL) { origin = dns_rootname; } RETTOK(dns_name_fromtext(&name, &buffer, origin, options, target)); /* * Inception. */ RETERR(isc_lex_getmastertoken(lexer, &token, isc_tokentype_number, false)); RETERR(uint32_tobuffer(token.value.as_ulong, target)); /* * Expiration. */ RETERR(isc_lex_getmastertoken(lexer, &token, isc_tokentype_number, false)); RETERR(uint32_tobuffer(token.value.as_ulong, target)); /* * Mode. */ 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)); /* * Error. */ RETERR(isc_lex_getmastertoken(lexer, &token, isc_tokentype_string, false)); if (dns_tsigrcode_fromtext(&rcode, &token.value.as_textregion) != ISC_R_SUCCESS) { i = strtol(DNS_AS_STR(token), &e, 10); if (*e != 0) { RETTOK(DNS_R_UNKNOWN); } if (i < 0 || i > 0xffff) { RETTOK(ISC_R_RANGE); } rcode = (dns_rcode_t)i; } RETERR(uint16_tobuffer(rcode, target)); /* * Key Size. */ 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)); /* * Key Data. */ RETERR(isc_base64_tobuffer(lexer, target, (int)token.value.as_ulong)); /* * Other Size. */ 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)); /* * Other Data. */ return (isc_base64_tobuffer(lexer, target, (int)token.value.as_ulong)); } static isc_result_t totext_tkey(ARGS_TOTEXT) { isc_region_t sr, dr; char buf[sizeof("4294967295 ")]; unsigned long n; dns_name_t name; dns_name_t prefix; bool sub; REQUIRE(rdata->type == dns_rdatatype_tkey); REQUIRE(rdata->length != 0); dns_rdata_toregion(rdata, &sr); /* * Algorithm. */ dns_name_init(&name, NULL); dns_name_init(&prefix, NULL); dns_name_fromregion(&name, &sr); sub = name_prefix(&name, tctx->origin, &prefix); RETERR(dns_name_totext(&prefix, sub, target)); RETERR(str_totext(" ", target)); isc_region_consume(&sr, name_length(&name)); /* * Inception. */ n = uint32_fromregion(&sr); isc_region_consume(&sr, 4); snprintf(buf, sizeof(buf), "%lu ", n); RETERR(str_totext(buf, target)); /* * Expiration. */ n = uint32_fromregion(&sr); isc_region_consume(&sr, 4); snprintf(buf, sizeof(buf), "%lu ", n); RETERR(str_totext(buf, target)); /* * Mode. */ n = uint16_fromregion(&sr); isc_region_consume(&sr, 2); snprintf(buf, sizeof(buf), "%lu ", n); RETERR(str_totext(buf, target)); /* * Error. */ n = uint16_fromregion(&sr); isc_region_consume(&sr, 2); if (dns_tsigrcode_totext((dns_rcode_t)n, target) == ISC_R_SUCCESS) { RETERR(str_totext(" ", target)); } else { snprintf(buf, sizeof(buf), "%lu ", n); RETERR(str_totext(buf, target)); } /* * Key Size. */ n = uint16_fromregion(&sr); isc_region_consume(&sr, 2); snprintf(buf, sizeof(buf), "%lu", n); RETERR(str_totext(buf, target)); /* * Key Data. */ REQUIRE(n <= sr.length); dr = sr; dr.length = n; if ((tctx->flags & DNS_STYLEFLAG_MULTILINE) != 0) { RETERR(str_totext(" (", target)); } RETERR(str_totext(tctx->linebreak, target)); if (tctx->width == 0) { /* No splitting */ RETERR(isc_base64_totext(&dr, 60, "", target)); } else { RETERR(isc_base64_totext(&dr, tctx->width - 2, tctx->linebreak, target)); } if ((tctx->flags & DNS_STYLEFLAG_MULTILINE) != 0) { RETERR(str_totext(" ) ", target)); } else { RETERR(str_totext(" ", target)); } isc_region_consume(&sr, n); /* * Other Size. */ n = uint16_fromregion(&sr); isc_region_consume(&sr, 2); snprintf(buf, sizeof(buf), "%lu", n); RETERR(str_totext(buf, target)); /* * Other Data. */ REQUIRE(n <= sr.length); if (n != 0U) { dr = sr; dr.length = n; if ((tctx->flags & DNS_STYLEFLAG_MULTILINE) != 0) { RETERR(str_totext(" (", target)); } RETERR(str_totext(tctx->linebreak, target)); if (tctx->width == 0) { /* No splitting */ RETERR(isc_base64_totext(&dr, 60, "", target)); } else { RETERR(isc_base64_totext(&dr, tctx->width - 2, tctx->linebreak, target)); } if ((tctx->flags & DNS_STYLEFLAG_MULTILINE) != 0) { RETERR(str_totext(" )", target)); } } return (ISC_R_SUCCESS); } static isc_result_t fromwire_tkey(ARGS_FROMWIRE) { isc_region_t sr; unsigned long n; dns_name_t name; REQUIRE(type == dns_rdatatype_tkey); UNUSED(type); UNUSED(rdclass); dns_decompress_setmethods(dctx, DNS_COMPRESS_NONE); /* * Algorithm. */ dns_name_init(&name, NULL); RETERR(dns_name_fromwire(&name, source, dctx, options, target)); /* * Inception: 4 * Expiration: 4 * Mode: 2 * Error: 2 */ isc_buffer_activeregion(source, &sr); if (sr.length < 12) { return (ISC_R_UNEXPECTEDEND); } RETERR(mem_tobuffer(target, sr.base, 12)); isc_region_consume(&sr, 12); isc_buffer_forward(source, 12); /* * Key Length + Key Data. */ if (sr.length < 2) { return (ISC_R_UNEXPECTEDEND); } n = uint16_fromregion(&sr); if (sr.length < n + 2) { return (ISC_R_UNEXPECTEDEND); } RETERR(mem_tobuffer(target, sr.base, n + 2)); isc_region_consume(&sr, n + 2); isc_buffer_forward(source, n + 2); /* * Other Length + Other Data. */ if (sr.length < 2) { return (ISC_R_UNEXPECTEDEND); } n = uint16_fromregion(&sr); if (sr.length < n + 2) { return (ISC_R_UNEXPECTEDEND); } isc_buffer_forward(source, n + 2); return (mem_tobuffer(target, sr.base, n + 2)); } static isc_result_t towire_tkey(ARGS_TOWIRE) { isc_region_t sr; dns_name_t name; dns_offsets_t offsets; REQUIRE(rdata->type == dns_rdatatype_tkey); REQUIRE(rdata->length != 0); dns_compress_setmethods(cctx, DNS_COMPRESS_NONE); /* * Algorithm. */ dns_rdata_toregion(rdata, &sr); dns_name_init(&name, offsets); dns_name_fromregion(&name, &sr); RETERR(dns_name_towire(&name, cctx, target)); isc_region_consume(&sr, name_length(&name)); return (mem_tobuffer(target, sr.base, sr.length)); } static int compare_tkey(ARGS_COMPARE) { isc_region_t r1; isc_region_t r2; dns_name_t name1; dns_name_t name2; int order; REQUIRE(rdata1->type == rdata2->type); REQUIRE(rdata1->rdclass == rdata2->rdclass); REQUIRE(rdata1->type == dns_rdatatype_tkey); REQUIRE(rdata1->length != 0); REQUIRE(rdata2->length != 0); /* * Algorithm. */ dns_rdata_toregion(rdata1, &r1); dns_rdata_toregion(rdata2, &r2); dns_name_init(&name1, NULL); dns_name_init(&name2, NULL); dns_name_fromregion(&name1, &r1); dns_name_fromregion(&name2, &r2); if ((order = dns_name_rdatacompare(&name1, &name2)) != 0) { return (order); } isc_region_consume(&r1, name_length(&name1)); isc_region_consume(&r2, name_length(&name2)); return (isc_region_compare(&r1, &r2)); } static isc_result_t fromstruct_tkey(ARGS_FROMSTRUCT) { dns_rdata_tkey_t *tkey = source; REQUIRE(type == dns_rdatatype_tkey); REQUIRE(tkey != NULL); REQUIRE(tkey->common.rdtype == type); REQUIRE(tkey->common.rdclass == rdclass); UNUSED(type); UNUSED(rdclass); /* * Algorithm Name. */ RETERR(name_tobuffer(&tkey->algorithm, target)); /* * Inception: 32 bits. */ RETERR(uint32_tobuffer(tkey->inception, target)); /* * Expire: 32 bits. */ RETERR(uint32_tobuffer(tkey->expire, target)); /* * Mode: 16 bits. */ RETERR(uint16_tobuffer(tkey->mode, target)); /* * Error: 16 bits. */ RETERR(uint16_tobuffer(tkey->error, target)); /* * Key size: 16 bits. */ RETERR(uint16_tobuffer(tkey->keylen, target)); /* * Key. */ RETERR(mem_tobuffer(target, tkey->key, tkey->keylen)); /* * Other size: 16 bits. */ RETERR(uint16_tobuffer(tkey->otherlen, target)); /* * Other data. */ return (mem_tobuffer(target, tkey->other, tkey->otherlen)); } static isc_result_t tostruct_tkey(ARGS_TOSTRUCT) { dns_rdata_tkey_t *tkey = target; dns_name_t alg; isc_region_t sr; REQUIRE(rdata->type == dns_rdatatype_tkey); REQUIRE(tkey != NULL); REQUIRE(rdata->length != 0); tkey->common.rdclass = rdata->rdclass; tkey->common.rdtype = rdata->type; ISC_LINK_INIT(&tkey->common, link); dns_rdata_toregion(rdata, &sr); /* * Algorithm Name. */ dns_name_init(&alg, NULL); dns_name_fromregion(&alg, &sr); dns_name_init(&tkey->algorithm, NULL); name_duporclone(&alg, mctx, &tkey->algorithm); isc_region_consume(&sr, name_length(&tkey->algorithm)); /* * Inception. */ tkey->inception = uint32_fromregion(&sr); isc_region_consume(&sr, 4); /* * Expire. */ tkey->expire = uint32_fromregion(&sr); isc_region_consume(&sr, 4); /* * Mode. */ tkey->mode = uint16_fromregion(&sr); isc_region_consume(&sr, 2); /* * Error. */ tkey->error = uint16_fromregion(&sr); isc_region_consume(&sr, 2); /* * Key size. */ tkey->keylen = uint16_fromregion(&sr); isc_region_consume(&sr, 2); /* * Key. */ INSIST(tkey->keylen + 2U <= sr.length); tkey->key = mem_maybedup(mctx, sr.base, tkey->keylen); if (tkey->key == NULL) { goto cleanup; } isc_region_consume(&sr, tkey->keylen); /* * Other size. */ tkey->otherlen = uint16_fromregion(&sr); isc_region_consume(&sr, 2); /* * Other. */ INSIST(tkey->otherlen <= sr.length); tkey->other = mem_maybedup(mctx, sr.base, tkey->otherlen); if (tkey->other == NULL) { goto cleanup; } tkey->mctx = mctx; return (ISC_R_SUCCESS); cleanup: if (mctx != NULL) { dns_name_free(&tkey->algorithm, mctx); } if (mctx != NULL && tkey->key != NULL) { isc_mem_free(mctx, tkey->key); } return (ISC_R_NOMEMORY); } static void freestruct_tkey(ARGS_FREESTRUCT) { dns_rdata_tkey_t *tkey = (dns_rdata_tkey_t *)source; REQUIRE(tkey != NULL); if (tkey->mctx == NULL) { return; } dns_name_free(&tkey->algorithm, tkey->mctx); if (tkey->key != NULL) { isc_mem_free(tkey->mctx, tkey->key); } if (tkey->other != NULL) { isc_mem_free(tkey->mctx, tkey->other); } tkey->mctx = NULL; } static isc_result_t additionaldata_tkey(ARGS_ADDLDATA) { REQUIRE(rdata->type == dns_rdatatype_tkey); UNUSED(rdata); UNUSED(owner); UNUSED(add); UNUSED(arg); return (ISC_R_SUCCESS); } static isc_result_t digest_tkey(ARGS_DIGEST) { UNUSED(rdata); UNUSED(digest); UNUSED(arg); REQUIRE(rdata->type == dns_rdatatype_tkey); return (ISC_R_NOTIMPLEMENTED); } static bool checkowner_tkey(ARGS_CHECKOWNER) { REQUIRE(type == dns_rdatatype_tkey); UNUSED(name); UNUSED(type); UNUSED(rdclass); UNUSED(wildcard); return (true); } static bool checknames_tkey(ARGS_CHECKNAMES) { REQUIRE(rdata->type == dns_rdatatype_tkey); UNUSED(rdata); UNUSED(owner); UNUSED(bad); return (true); } static int casecompare_tkey(ARGS_COMPARE) { return (compare_tkey(rdata1, rdata2)); } #endif /* RDATA_GENERIC_TKEY_249_C */