diff options
Diffstat (limited to 'lib/dns/rdata/generic/soa_6.c')
| -rw-r--r-- | lib/dns/rdata/generic/soa_6.c | 443 |
1 files changed, 443 insertions, 0 deletions
diff --git a/lib/dns/rdata/generic/soa_6.c b/lib/dns/rdata/generic/soa_6.c new file mode 100644 index 0000000..24b5278 --- /dev/null +++ b/lib/dns/rdata/generic/soa_6.c @@ -0,0 +1,443 @@ +/* + * 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; + + 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); + name_duporclone(&name, mctx, &soa->origin); + + dns_name_fromregion(&name, ®ion); + isc_region_consume(®ion, name_length(&name)); + dns_name_init(&soa->contact, NULL); + name_duporclone(&name, mctx, &soa->contact); + + 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); +} + +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) { + REQUIRE(rdata->type == dns_rdatatype_soa); + + UNUSED(rdata); + UNUSED(owner); + UNUSED(add); + UNUSED(arg); + + 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 */ |