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Diffstat (limited to '')
| -rw-r--r-- | lib/dns/rdata/generic/csync_62.c | 273 |
1 files changed, 273 insertions, 0 deletions
diff --git a/lib/dns/rdata/generic/csync_62.c b/lib/dns/rdata/generic/csync_62.c new file mode 100644 index 0000000..f988729 --- /dev/null +++ b/lib/dns/rdata/generic/csync_62.c @@ -0,0 +1,273 @@ +/* + * 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. + */ + +/* RFC 7477 */ + +#ifndef RDATA_GENERIC_CSYNC_62_C +#define RDATA_GENERIC_CSYNC_62_C + +#define RRTYPE_CSYNC_ATTRIBUTES 0 + +static isc_result_t +fromtext_csync(ARGS_FROMTEXT) { + isc_token_t token; + + REQUIRE(type == dns_rdatatype_csync); + + UNUSED(type); + UNUSED(rdclass); + UNUSED(origin); + UNUSED(options); + UNUSED(callbacks); + + /* Serial. */ + RETERR(isc_lex_getmastertoken(lexer, &token, isc_tokentype_number, + false)); + RETERR(uint32_tobuffer(token.value.as_ulong, target)); + + /* Flags. */ + 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)); + + /* Type Map */ + return (typemap_fromtext(lexer, target, true)); +} + +static isc_result_t +totext_csync(ARGS_TOTEXT) { + unsigned long num; + char buf[sizeof("0123456789")]; /* Also TYPE65535 */ + isc_region_t sr; + + REQUIRE(rdata->type == dns_rdatatype_csync); + REQUIRE(rdata->length >= 6); + + UNUSED(tctx); + + dns_rdata_toregion(rdata, &sr); + + num = uint32_fromregion(&sr); + isc_region_consume(&sr, 4); + snprintf(buf, sizeof(buf), "%lu", num); + RETERR(str_totext(buf, target)); + + RETERR(str_totext(" ", target)); + + num = uint16_fromregion(&sr); + isc_region_consume(&sr, 2); + snprintf(buf, sizeof(buf), "%lu", num); + RETERR(str_totext(buf, target)); + + /* + * Don't leave a trailing space when there's no typemap present. + */ + if (sr.length > 0) { + RETERR(str_totext(" ", target)); + } + return (typemap_totext(&sr, NULL, target)); +} + +static isc_result_t +fromwire_csync(ARGS_FROMWIRE) { + isc_region_t sr; + + REQUIRE(type == dns_rdatatype_csync); + + UNUSED(type); + UNUSED(rdclass); + UNUSED(options); + UNUSED(dctx); + + /* + * Serial + Flags + */ + isc_buffer_activeregion(source, &sr); + if (sr.length < 6) { + return (ISC_R_UNEXPECTEDEND); + } + + RETERR(mem_tobuffer(target, sr.base, 6)); + isc_buffer_forward(source, 6); + isc_region_consume(&sr, 6); + + RETERR(typemap_test(&sr, true)); + + RETERR(mem_tobuffer(target, sr.base, sr.length)); + isc_buffer_forward(source, sr.length); + return (ISC_R_SUCCESS); +} + +static isc_result_t +towire_csync(ARGS_TOWIRE) { + REQUIRE(rdata->type == dns_rdatatype_csync); + REQUIRE(rdata->length >= 6); + + UNUSED(cctx); + + return (mem_tobuffer(target, rdata->data, rdata->length)); +} + +static int +compare_csync(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_csync); + REQUIRE(rdata1->length >= 6); + REQUIRE(rdata2->length >= 6); + + dns_rdata_toregion(rdata1, &r1); + dns_rdata_toregion(rdata2, &r2); + return (isc_region_compare(&r1, &r2)); +} + +static isc_result_t +fromstruct_csync(ARGS_FROMSTRUCT) { + dns_rdata_csync_t *csync = source; + isc_region_t region; + + REQUIRE(type == dns_rdatatype_csync); + REQUIRE(csync != NULL); + REQUIRE(csync->common.rdtype == type); + REQUIRE(csync->common.rdclass == rdclass); + REQUIRE(csync->typebits != NULL || csync->len == 0); + + UNUSED(type); + UNUSED(rdclass); + + RETERR(uint32_tobuffer(csync->serial, target)); + RETERR(uint16_tobuffer(csync->flags, target)); + + region.base = csync->typebits; + region.length = csync->len; + RETERR(typemap_test(®ion, true)); + return (mem_tobuffer(target, csync->typebits, csync->len)); +} + +static isc_result_t +tostruct_csync(ARGS_TOSTRUCT) { + isc_region_t region; + dns_rdata_csync_t *csync = target; + + REQUIRE(rdata->type == dns_rdatatype_csync); + REQUIRE(csync != NULL); + REQUIRE(rdata->length != 0); + + csync->common.rdclass = rdata->rdclass; + csync->common.rdtype = rdata->type; + ISC_LINK_INIT(&csync->common, link); + + dns_rdata_toregion(rdata, ®ion); + + csync->serial = uint32_fromregion(®ion); + isc_region_consume(®ion, 4); + + csync->flags = uint16_fromregion(®ion); + isc_region_consume(®ion, 2); + + csync->len = region.length; + csync->typebits = mem_maybedup(mctx, region.base, region.length); + if (csync->typebits == NULL) { + goto cleanup; + } + + csync->mctx = mctx; + return (ISC_R_SUCCESS); + +cleanup: + return (ISC_R_NOMEMORY); +} + +static void +freestruct_csync(ARGS_FREESTRUCT) { + dns_rdata_csync_t *csync = source; + + REQUIRE(csync != NULL); + REQUIRE(csync->common.rdtype == dns_rdatatype_csync); + + if (csync->mctx == NULL) { + return; + } + + if (csync->typebits != NULL) { + isc_mem_free(csync->mctx, csync->typebits); + } + csync->mctx = NULL; +} + +static isc_result_t +additionaldata_csync(ARGS_ADDLDATA) { + REQUIRE(rdata->type == dns_rdatatype_csync); + + UNUSED(rdata); + UNUSED(add); + UNUSED(arg); + + return (ISC_R_SUCCESS); +} + +static isc_result_t +digest_csync(ARGS_DIGEST) { + isc_region_t r; + + REQUIRE(rdata->type == dns_rdatatype_csync); + + dns_rdata_toregion(rdata, &r); + return ((digest)(arg, &r)); +} + +static bool +checkowner_csync(ARGS_CHECKOWNER) { + REQUIRE(type == dns_rdatatype_csync); + + UNUSED(name); + UNUSED(type); + UNUSED(rdclass); + UNUSED(wildcard); + + return (true); +} + +static bool +checknames_csync(ARGS_CHECKNAMES) { + REQUIRE(rdata->type == dns_rdatatype_csync); + + UNUSED(rdata); + UNUSED(owner); + UNUSED(bad); + + return (true); +} + +static int +casecompare_csync(ARGS_COMPARE) { + isc_region_t region1; + isc_region_t region2; + + REQUIRE(rdata1->type == rdata2->type); + REQUIRE(rdata1->rdclass == rdata2->rdclass); + REQUIRE(rdata1->type == dns_rdatatype_csync); + REQUIRE(rdata1->length >= 6); + REQUIRE(rdata2->length >= 6); + + dns_rdata_toregion(rdata1, ®ion1); + dns_rdata_toregion(rdata2, ®ion2); + return (isc_region_compare(®ion1, ®ion2)); +} +#endif /* RDATA_GENERIC_CSYNC_62_C */ |