/* $NetBSD: afsdb_18.c,v 1.1.4.2 2024/02/29 11:38:50 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. */ /* RFC1183 */ #ifndef RDATA_GENERIC_AFSDB_18_C #define RDATA_GENERIC_AFSDB_18_C #define RRTYPE_AFSDB_ATTRIBUTES (0) static isc_result_t fromtext_afsdb(ARGS_FROMTEXT) { isc_token_t token; isc_buffer_t buffer; dns_name_t name; bool ok; REQUIRE(type == dns_rdatatype_afsdb); UNUSED(type); UNUSED(rdclass); UNUSED(callbacks); /* * Subtype. */ 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)); /* * Hostname. */ 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)); ok = true; if ((options & DNS_RDATA_CHECKNAMES) != 0) { ok = dns_name_ishostname(&name, false); } if (!ok && (options & DNS_RDATA_CHECKNAMESFAIL) != 0) { RETTOK(DNS_R_BADNAME); } if (!ok && callbacks != NULL) { warn_badname(&name, lexer, callbacks); } return (ISC_R_SUCCESS); } static isc_result_t totext_afsdb(ARGS_TOTEXT) { dns_name_t name; dns_name_t prefix; isc_region_t region; char buf[sizeof("64000 ")]; bool sub; unsigned int num; REQUIRE(rdata->type == dns_rdatatype_afsdb); REQUIRE(rdata->length != 0); dns_name_init(&name, NULL); dns_name_init(&prefix, NULL); dns_rdata_toregion(rdata, ®ion); num = uint16_fromregion(®ion); isc_region_consume(®ion, 2); snprintf(buf, sizeof(buf), "%u ", num); RETERR(str_totext(buf, target)); dns_name_fromregion(&name, ®ion); sub = name_prefix(&name, tctx->origin, &prefix); return (dns_name_totext(&prefix, sub, target)); } static isc_result_t fromwire_afsdb(ARGS_FROMWIRE) { dns_name_t name; isc_region_t sr; isc_region_t tr; REQUIRE(type == dns_rdatatype_afsdb); UNUSED(type); UNUSED(rdclass); dns_decompress_setmethods(dctx, DNS_COMPRESS_NONE); dns_name_init(&name, NULL); isc_buffer_activeregion(source, &sr); isc_buffer_availableregion(target, &tr); if (tr.length < 2) { return (ISC_R_NOSPACE); } if (sr.length < 2) { return (ISC_R_UNEXPECTEDEND); } memmove(tr.base, sr.base, 2); isc_buffer_forward(source, 2); isc_buffer_add(target, 2); return (dns_name_fromwire(&name, source, dctx, options, target)); } static isc_result_t towire_afsdb(ARGS_TOWIRE) { isc_region_t tr; isc_region_t sr; dns_name_t name; dns_offsets_t offsets; REQUIRE(rdata->type == dns_rdatatype_afsdb); REQUIRE(rdata->length != 0); dns_compress_setmethods(cctx, DNS_COMPRESS_NONE); isc_buffer_availableregion(target, &tr); dns_rdata_toregion(rdata, &sr); if (tr.length < 2) { return (ISC_R_NOSPACE); } memmove(tr.base, sr.base, 2); isc_region_consume(&sr, 2); isc_buffer_add(target, 2); dns_name_init(&name, offsets); dns_name_fromregion(&name, &sr); return (dns_name_towire(&name, cctx, target)); } static int compare_afsdb(ARGS_COMPARE) { int result; dns_name_t name1; dns_name_t name2; isc_region_t region1; isc_region_t region2; REQUIRE(rdata1->type == rdata2->type); REQUIRE(rdata1->rdclass == rdata2->rdclass); REQUIRE(rdata1->type == dns_rdatatype_afsdb); REQUIRE(rdata1->length != 0); REQUIRE(rdata2->length != 0); result = memcmp(rdata1->data, rdata2->data, 2); if (result != 0) { return (result < 0 ? -1 : 1); } dns_name_init(&name1, NULL); dns_name_init(&name2, NULL); dns_rdata_toregion(rdata1, ®ion1); dns_rdata_toregion(rdata2, ®ion2); isc_region_consume(®ion1, 2); isc_region_consume(®ion2, 2); dns_name_fromregion(&name1, ®ion1); dns_name_fromregion(&name2, ®ion2); return (dns_name_rdatacompare(&name1, &name2)); } static isc_result_t fromstruct_afsdb(ARGS_FROMSTRUCT) { dns_rdata_afsdb_t *afsdb = source; isc_region_t region; REQUIRE(type == dns_rdatatype_afsdb); REQUIRE(afsdb != NULL); REQUIRE(afsdb->common.rdclass == rdclass); REQUIRE(afsdb->common.rdtype == type); UNUSED(type); UNUSED(rdclass); RETERR(uint16_tobuffer(afsdb->subtype, target)); dns_name_toregion(&afsdb->server, ®ion); return (isc_buffer_copyregion(target, ®ion)); } static isc_result_t tostruct_afsdb(ARGS_TOSTRUCT) { isc_region_t region; dns_rdata_afsdb_t *afsdb = target; dns_name_t name; REQUIRE(rdata->type == dns_rdatatype_afsdb); REQUIRE(afsdb != NULL); REQUIRE(rdata->length != 0); afsdb->common.rdclass = rdata->rdclass; afsdb->common.rdtype = rdata->type; ISC_LINK_INIT(&afsdb->common, link); dns_name_init(&afsdb->server, NULL); dns_rdata_toregion(rdata, ®ion); afsdb->subtype = uint16_fromregion(®ion); isc_region_consume(®ion, 2); dns_name_init(&name, NULL); dns_name_fromregion(&name, ®ion); RETERR(name_duporclone(&name, mctx, &afsdb->server)); afsdb->mctx = mctx; return (ISC_R_SUCCESS); } static void freestruct_afsdb(ARGS_FREESTRUCT) { dns_rdata_afsdb_t *afsdb = source; REQUIRE(afsdb != NULL); REQUIRE(afsdb->common.rdtype == dns_rdatatype_afsdb); if (afsdb->mctx == NULL) { return; } dns_name_free(&afsdb->server, afsdb->mctx); afsdb->mctx = NULL; } static isc_result_t additionaldata_afsdb(ARGS_ADDLDATA) { dns_name_t name; dns_offsets_t offsets; isc_region_t region; REQUIRE(rdata->type == dns_rdatatype_afsdb); dns_name_init(&name, offsets); dns_rdata_toregion(rdata, ®ion); isc_region_consume(®ion, 2); dns_name_fromregion(&name, ®ion); return ((add)(arg, &name, dns_rdatatype_a)); } static isc_result_t digest_afsdb(ARGS_DIGEST) { isc_region_t r1, r2; dns_name_t name; REQUIRE(rdata->type == dns_rdatatype_afsdb); dns_rdata_toregion(rdata, &r1); r2 = r1; isc_region_consume(&r2, 2); r1.length = 2; RETERR((digest)(arg, &r1)); dns_name_init(&name, NULL); dns_name_fromregion(&name, &r2); return (dns_name_digest(&name, digest, arg)); } static bool checkowner_afsdb(ARGS_CHECKOWNER) { REQUIRE(type == dns_rdatatype_afsdb); UNUSED(name); UNUSED(type); UNUSED(rdclass); UNUSED(wildcard); return (true); } static bool checknames_afsdb(ARGS_CHECKNAMES) { isc_region_t region; dns_name_t name; REQUIRE(rdata->type == dns_rdatatype_afsdb); UNUSED(owner); dns_rdata_toregion(rdata, ®ion); isc_region_consume(®ion, 2); dns_name_init(&name, NULL); dns_name_fromregion(&name, ®ion); if (!dns_name_ishostname(&name, false)) { if (bad != NULL) { dns_name_clone(&name, bad); } return (false); } return (true); } static int casecompare_afsdb(ARGS_COMPARE) { return (compare_afsdb(rdata1, rdata2)); } #endif /* RDATA_GENERIC_AFSDB_18_C */