Adding upstream version 1:9.18.19.upstream/1%9.18.19upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 291 insertions, 0 deletions

diff --git a/lib/dns/rdata/generic/nsec_47.c b/lib/dns/rdata/generic/nsec_47.c
new file mode 100644
index 0000000..77700be
--- /dev/null
+++ b/lib/dns/rdata/generic/nsec_47.c
@@ -0,0 +1,291 @@
+/*
+ * 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 3845 */
+
+#ifndef RDATA_GENERIC_NSEC_47_C
+#define RDATA_GENERIC_NSEC_47_C
+
+/*
+ * The attributes do not include DNS_RDATATYPEATTR_SINGLETON
+ * because we must be able to handle a parent/child NSEC pair.
+ */
+#define RRTYPE_NSEC_ATTRIBUTES                                      \
+	(DNS_RDATATYPEATTR_DNSSEC | DNS_RDATATYPEATTR_ZONECUTAUTH | \
+	 DNS_RDATATYPEATTR_ATCNAME)
+
+static isc_result_t
+fromtext_nsec(ARGS_FROMTEXT) {
+	isc_token_t token;
+	dns_name_t name;
+	isc_buffer_t buffer;
+
+	REQUIRE(type == dns_rdatatype_nsec);
+
+	UNUSED(type);
+	UNUSED(rdclass);
+	UNUSED(callbacks);
+
+	/*
+	 * Next domain.
+	 */
+	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));
+
+	return (typemap_fromtext(lexer, target, false));
+}
+
+static isc_result_t
+totext_nsec(ARGS_TOTEXT) {
+	isc_region_t sr;
+	dns_name_t name;
+
+	REQUIRE(rdata->type == dns_rdatatype_nsec);
+	REQUIRE(rdata->length != 0);
+
+	UNUSED(tctx);
+
+	dns_name_init(&name, NULL);
+	dns_rdata_toregion(rdata, &sr);
+	dns_name_fromregion(&name, &sr);
+	isc_region_consume(&sr, name_length(&name));
+	RETERR(dns_name_totext(&name, false, 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_nsec(ARGS_FROMWIRE) {
+	isc_region_t sr;
+	dns_name_t name;
+
+	REQUIRE(type == dns_rdatatype_nsec);
+
+	UNUSED(type);
+	UNUSED(rdclass);
+
+	dns_decompress_setmethods(dctx, DNS_COMPRESS_NONE);
+
+	dns_name_init(&name, NULL);
+	RETERR(dns_name_fromwire(&name, source, dctx, options, target));
+
+	isc_buffer_activeregion(source, &sr);
+	RETERR(typemap_test(&sr, false));
+	RETERR(mem_tobuffer(target, sr.base, sr.length));
+	isc_buffer_forward(source, sr.length);
+	return (ISC_R_SUCCESS);
+}
+
+static isc_result_t
+towire_nsec(ARGS_TOWIRE) {
+	isc_region_t sr;
+	dns_name_t name;
+	dns_offsets_t offsets;
+
+	REQUIRE(rdata->type == dns_rdatatype_nsec);
+	REQUIRE(rdata->length != 0);
+
+	dns_compress_setmethods(cctx, DNS_COMPRESS_NONE);
+	dns_name_init(&name, offsets);
+	dns_rdata_toregion(rdata, &sr);
+	dns_name_fromregion(&name, &sr);
+	isc_region_consume(&sr, name_length(&name));
+	RETERR(dns_name_towire(&name, cctx, target));
+
+	return (mem_tobuffer(target, sr.base, sr.length));
+}
+
+static int
+compare_nsec(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_nsec);
+	REQUIRE(rdata1->length != 0);
+	REQUIRE(rdata2->length != 0);
+
+	dns_rdata_toregion(rdata1, &r1);
+	dns_rdata_toregion(rdata2, &r2);
+	return (isc_region_compare(&r1, &r2));
+}
+
+static isc_result_t
+fromstruct_nsec(ARGS_FROMSTRUCT) {
+	dns_rdata_nsec_t *nsec = source;
+	isc_region_t region;
+
+	REQUIRE(type == dns_rdatatype_nsec);
+	REQUIRE(nsec != NULL);
+	REQUIRE(nsec->common.rdtype == type);
+	REQUIRE(nsec->common.rdclass == rdclass);
+	REQUIRE(nsec->typebits != NULL || nsec->len == 0);
+
+	UNUSED(type);
+	UNUSED(rdclass);
+
+	dns_name_toregion(&nsec->next, &region);
+	RETERR(isc_buffer_copyregion(target, &region));
+
+	region.base = nsec->typebits;
+	region.length = nsec->len;
+	RETERR(typemap_test(&region, false));
+	return (mem_tobuffer(target, nsec->typebits, nsec->len));
+}
+
+static isc_result_t
+tostruct_nsec(ARGS_TOSTRUCT) {
+	isc_region_t region;
+	dns_rdata_nsec_t *nsec = target;
+	dns_name_t name;
+
+	REQUIRE(rdata->type == dns_rdatatype_nsec);
+	REQUIRE(nsec != NULL);
+	REQUIRE(rdata->length != 0);
+
+	nsec->common.rdclass = rdata->rdclass;
+	nsec->common.rdtype = rdata->type;
+	ISC_LINK_INIT(&nsec->common, link);
+
+	dns_name_init(&name, NULL);
+	dns_rdata_toregion(rdata, &region);
+	dns_name_fromregion(&name, &region);
+	isc_region_consume(&region, name_length(&name));
+	dns_name_init(&nsec->next, NULL);
+	name_duporclone(&name, mctx, &nsec->next);
+
+	nsec->len = region.length;
+	nsec->typebits = mem_maybedup(mctx, region.base, region.length);
+	if (nsec->typebits == NULL) {
+		goto cleanup;
+	}
+
+	nsec->mctx = mctx;
+	return (ISC_R_SUCCESS);
+
+cleanup:
+	if (mctx != NULL) {
+		dns_name_free(&nsec->next, mctx);
+	}
+	return (ISC_R_NOMEMORY);
+}
+
+static void
+freestruct_nsec(ARGS_FREESTRUCT) {
+	dns_rdata_nsec_t *nsec = source;
+
+	REQUIRE(nsec != NULL);
+	REQUIRE(nsec->common.rdtype == dns_rdatatype_nsec);
+
+	if (nsec->mctx == NULL) {
+		return;
+	}
+
+	dns_name_free(&nsec->next, nsec->mctx);
+	if (nsec->typebits != NULL) {
+		isc_mem_free(nsec->mctx, nsec->typebits);
+	}
+	nsec->mctx = NULL;
+}
+
+static isc_result_t
+additionaldata_nsec(ARGS_ADDLDATA) {
+	REQUIRE(rdata->type == dns_rdatatype_nsec);
+
+	UNUSED(rdata);
+	UNUSED(owner);
+	UNUSED(add);
+	UNUSED(arg);
+
+	return (ISC_R_SUCCESS);
+}
+
+static isc_result_t
+digest_nsec(ARGS_DIGEST) {
+	isc_region_t r;
+
+	REQUIRE(rdata->type == dns_rdatatype_nsec);
+
+	dns_rdata_toregion(rdata, &r);
+	return ((digest)(arg, &r));
+}
+
+static bool
+checkowner_nsec(ARGS_CHECKOWNER) {
+	REQUIRE(type == dns_rdatatype_nsec);
+
+	UNUSED(name);
+	UNUSED(type);
+	UNUSED(rdclass);
+	UNUSED(wildcard);
+
+	return (true);
+}
+
+static bool
+checknames_nsec(ARGS_CHECKNAMES) {
+	REQUIRE(rdata->type == dns_rdatatype_nsec);
+
+	UNUSED(rdata);
+	UNUSED(owner);
+	UNUSED(bad);
+
+	return (true);
+}
+
+static int
+casecompare_nsec(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_nsec);
+	REQUIRE(rdata1->length != 0);
+	REQUIRE(rdata2->length != 0);
+
+	dns_name_init(&name1, NULL);
+	dns_name_init(&name2, NULL);
+
+	dns_rdata_toregion(rdata1, &region1);
+	dns_rdata_toregion(rdata2, &region2);
+
+	dns_name_fromregion(&name1, &region1);
+	dns_name_fromregion(&name2, &region2);
+
+	order = dns_name_rdatacompare(&name1, &name2);
+	if (order != 0) {
+		return (order);
+	}
+
+	isc_region_consume(&region1, name_length(&name1));
+	isc_region_consume(&region2, name_length(&name2));
+
+	return (isc_region_compare(&region1, &region2));
+}
+#endif /* RDATA_GENERIC_NSEC_47_C */