/* $NetBSD: soa_6.c,v 1.1.4.2 2024/02/29 11:38:55 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. */ #ifndef RDATA_GENERIC_SOA_6_C #define RDATA_GENERIC_SOA_6_C #define RRTYPE_SOA_ATTRIBUTES (DNS_RDATATYPEATTR_SINGLETON) static isc_result_t fromtext_soa(ARGS_FROMTEXT) { isc_token_t token; dns_name_t name; isc_buffer_t buffer; int i; uint32_t n; bool ok; REQUIRE(type == dns_rdatatype_soa); UNUSED(type); UNUSED(rdclass); UNUSED(callbacks); if (origin == NULL) { origin = dns_rootname; } for (i = 0; i < 2; i++) { RETERR(isc_lex_getmastertoken(lexer, &token, isc_tokentype_string, false)); dns_name_init(&name, NULL); buffer_fromregion(&buffer, &token.value.as_region); RETTOK(dns_name_fromtext(&name, &buffer, origin, options, target)); ok = true; if ((options & DNS_RDATA_CHECKNAMES) != 0) { switch (i) { case 0: ok = dns_name_ishostname(&name, false); break; case 1: ok = dns_name_ismailbox(&name); break; } } if (!ok && (options & DNS_RDATA_CHECKNAMESFAIL) != 0) { RETTOK(DNS_R_BADNAME); } if (!ok && callbacks != NULL) { warn_badname(&name, lexer, callbacks); } } RETERR(isc_lex_getmastertoken(lexer, &token, isc_tokentype_number, false)); RETERR(uint32_tobuffer(token.value.as_ulong, target)); for (i = 0; i < 4; i++) { RETERR(isc_lex_getmastertoken(lexer, &token, isc_tokentype_string, false)); RETTOK(dns_counter_fromtext(&token.value.as_textregion, &n)); RETERR(uint32_tobuffer(n, target)); } return (ISC_R_SUCCESS); } static const char *soa_fieldnames[5] = { "serial", "refresh", "retry", "expire", "minimum" }; static isc_result_t totext_soa(ARGS_TOTEXT) { isc_region_t dregion; dns_name_t mname; dns_name_t rname; dns_name_t prefix; bool sub; int i; bool multiline; bool comm; REQUIRE(rdata->type == dns_rdatatype_soa); REQUIRE(rdata->length != 0); multiline = ((tctx->flags & DNS_STYLEFLAG_MULTILINE) != 0); if (multiline) { comm = ((tctx->flags & DNS_STYLEFLAG_RRCOMMENT) != 0); } else { comm = false; } dns_name_init(&mname, NULL); dns_name_init(&rname, NULL); dns_name_init(&prefix, NULL); dns_rdata_toregion(rdata, &dregion); dns_name_fromregion(&mname, &dregion); isc_region_consume(&dregion, name_length(&mname)); dns_name_fromregion(&rname, &dregion); isc_region_consume(&dregion, name_length(&rname)); sub = name_prefix(&mname, tctx->origin, &prefix); RETERR(dns_name_totext(&prefix, sub, target)); RETERR(str_totext(" ", target)); sub = name_prefix(&rname, tctx->origin, &prefix); RETERR(dns_name_totext(&prefix, sub, target)); if (multiline) { RETERR(str_totext(" (", target)); } RETERR(str_totext(tctx->linebreak, target)); for (i = 0; i < 5; i++) { char buf[sizeof("0123456789 ; ")]; unsigned long num; num = uint32_fromregion(&dregion); isc_region_consume(&dregion, 4); snprintf(buf, sizeof(buf), comm ? "%-10lu ; " : "%lu", num); RETERR(str_totext(buf, target)); if (comm) { RETERR(str_totext(soa_fieldnames[i], target)); /* Print times in week/day/hour/minute/second form */ if (i >= 1) { RETERR(str_totext(" (", target)); RETERR(dns_ttl_totext(num, true, true, target)); RETERR(str_totext(")", target)); } RETERR(str_totext(tctx->linebreak, target)); } else if (i < 4) { RETERR(str_totext(tctx->linebreak, target)); } } if (multiline) { RETERR(str_totext(")", target)); } return (ISC_R_SUCCESS); } static isc_result_t fromwire_soa(ARGS_FROMWIRE) { dns_name_t mname; dns_name_t rname; isc_region_t sregion; isc_region_t tregion; REQUIRE(type == dns_rdatatype_soa); UNUSED(type); UNUSED(rdclass); dns_decompress_setmethods(dctx, DNS_COMPRESS_GLOBAL14); dns_name_init(&mname, NULL); dns_name_init(&rname, NULL); RETERR(dns_name_fromwire(&mname, source, dctx, options, target)); RETERR(dns_name_fromwire(&rname, source, dctx, options, target)); isc_buffer_activeregion(source, &sregion); isc_buffer_availableregion(target, &tregion); if (sregion.length < 20) { return (ISC_R_UNEXPECTEDEND); } if (tregion.length < 20) { return (ISC_R_NOSPACE); } memmove(tregion.base, sregion.base, 20); isc_buffer_forward(source, 20); isc_buffer_add(target, 20); return (ISC_R_SUCCESS); } static isc_result_t towire_soa(ARGS_TOWIRE) { isc_region_t sregion; isc_region_t tregion; dns_name_t mname; dns_name_t rname; dns_offsets_t moffsets; dns_offsets_t roffsets; REQUIRE(rdata->type == dns_rdatatype_soa); REQUIRE(rdata->length != 0); dns_compress_setmethods(cctx, DNS_COMPRESS_GLOBAL14); dns_name_init(&mname, moffsets); dns_name_init(&rname, roffsets); dns_rdata_toregion(rdata, &sregion); dns_name_fromregion(&mname, &sregion); isc_region_consume(&sregion, name_length(&mname)); RETERR(dns_name_towire(&mname, cctx, target)); dns_name_fromregion(&rname, &sregion); isc_region_consume(&sregion, name_length(&rname)); RETERR(dns_name_towire(&rname, cctx, target)); isc_buffer_availableregion(target, &tregion); if (tregion.length < 20) { return (ISC_R_NOSPACE); } memmove(tregion.base, sregion.base, 20); isc_buffer_add(target, 20); return (ISC_R_SUCCESS); } static int compare_soa(ARGS_COMPARE) { isc_region_t region1; isc_region_t region2; 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_soa); REQUIRE(rdata1->length != 0); REQUIRE(rdata2->length != 0); dns_name_init(&name1, NULL); dns_name_init(&name2, NULL); dns_rdata_toregion(rdata1, ®ion1); dns_rdata_toregion(rdata2, ®ion2); dns_name_fromregion(&name1, ®ion1); dns_name_fromregion(&name2, ®ion2); order = dns_name_rdatacompare(&name1, &name2); if (order != 0) { return (order); } isc_region_consume(®ion1, name_length(&name1)); isc_region_consume(®ion2, name_length(&name2)); dns_name_init(&name1, NULL); dns_name_init(&name2, NULL); dns_name_fromregion(&name1, ®ion1); dns_name_fromregion(&name2, ®ion2); order = dns_name_rdatacompare(&name1, &name2); if (order != 0) { return (order); } isc_region_consume(®ion1, name_length(&name1)); isc_region_consume(®ion2, name_length(&name2)); return (isc_region_compare(®ion1, ®ion2)); } static isc_result_t fromstruct_soa(ARGS_FROMSTRUCT) { dns_rdata_soa_t *soa = source; isc_region_t region; REQUIRE(type == dns_rdatatype_soa); REQUIRE(soa != NULL); REQUIRE(soa->common.rdtype == type); REQUIRE(soa->common.rdclass == rdclass); UNUSED(type); UNUSED(rdclass); dns_name_toregion(&soa->origin, ®ion); RETERR(isc_buffer_copyregion(target, ®ion)); dns_name_toregion(&soa->contact, ®ion); RETERR(isc_buffer_copyregion(target, ®ion)); RETERR(uint32_tobuffer(soa->serial, target)); RETERR(uint32_tobuffer(soa->refresh, target)); RETERR(uint32_tobuffer(soa->retry, target)); RETERR(uint32_tobuffer(soa->expire, target)); return (uint32_tobuffer(soa->minimum, target)); } static isc_result_t tostruct_soa(ARGS_TOSTRUCT) { isc_region_t region; dns_rdata_soa_t *soa = target; dns_name_t name; isc_result_t result; REQUIRE(rdata->type == dns_rdatatype_soa); REQUIRE(soa != NULL); REQUIRE(rdata->length != 0); soa->common.rdclass = rdata->rdclass; soa->common.rdtype = rdata->type; ISC_LINK_INIT(&soa->common, link); dns_rdata_toregion(rdata, ®ion); dns_name_init(&name, NULL); dns_name_fromregion(&name, ®ion); isc_region_consume(®ion, name_length(&name)); dns_name_init(&soa->origin, NULL); RETERR(name_duporclone(&name, mctx, &soa->origin)); dns_name_fromregion(&name, ®ion); isc_region_consume(®ion, name_length(&name)); dns_name_init(&soa->contact, NULL); result = name_duporclone(&name, mctx, &soa->contact); if (result != ISC_R_SUCCESS) { goto cleanup; } soa->serial = uint32_fromregion(®ion); isc_region_consume(®ion, 4); soa->refresh = uint32_fromregion(®ion); isc_region_consume(®ion, 4); soa->retry = uint32_fromregion(®ion); isc_region_consume(®ion, 4); soa->expire = uint32_fromregion(®ion); isc_region_consume(®ion, 4); soa->minimum = uint32_fromregion(®ion); soa->mctx = mctx; return (ISC_R_SUCCESS); cleanup: if (mctx != NULL) { dns_name_free(&soa->origin, mctx); } return (ISC_R_NOMEMORY); } static void freestruct_soa(ARGS_FREESTRUCT) { dns_rdata_soa_t *soa = source; REQUIRE(soa != NULL); REQUIRE(soa->common.rdtype == dns_rdatatype_soa); if (soa->mctx == NULL) { return; } dns_name_free(&soa->origin, soa->mctx); dns_name_free(&soa->contact, soa->mctx); soa->mctx = NULL; } static isc_result_t additionaldata_soa(ARGS_ADDLDATA) { UNUSED(rdata); UNUSED(add); UNUSED(arg); REQUIRE(rdata->type == dns_rdatatype_soa); return (ISC_R_SUCCESS); } static isc_result_t digest_soa(ARGS_DIGEST) { isc_region_t r; dns_name_t name; REQUIRE(rdata->type == dns_rdatatype_soa); dns_rdata_toregion(rdata, &r); dns_name_init(&name, NULL); dns_name_fromregion(&name, &r); RETERR(dns_name_digest(&name, digest, arg)); isc_region_consume(&r, name_length(&name)); dns_name_init(&name, NULL); dns_name_fromregion(&name, &r); RETERR(dns_name_digest(&name, digest, arg)); isc_region_consume(&r, name_length(&name)); return ((digest)(arg, &r)); } static bool checkowner_soa(ARGS_CHECKOWNER) { REQUIRE(type == dns_rdatatype_soa); UNUSED(name); UNUSED(type); UNUSED(rdclass); UNUSED(wildcard); return (true); } static bool checknames_soa(ARGS_CHECKNAMES) { isc_region_t region; dns_name_t name; REQUIRE(rdata->type == dns_rdatatype_soa); UNUSED(owner); dns_rdata_toregion(rdata, ®ion); 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); } isc_region_consume(®ion, name_length(&name)); dns_name_fromregion(&name, ®ion); if (!dns_name_ismailbox(&name)) { if (bad != NULL) { dns_name_clone(&name, bad); } return (false); } return (true); } static int casecompare_soa(ARGS_COMPARE) { return (compare_soa(rdata1, rdata2)); } #endif /* RDATA_GENERIC_SOA_6_C */