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, 231 insertions, 0 deletions

diff --git a/lib/dns/rdata/generic/cname_5.c b/lib/dns/rdata/generic/cname_5.c
new file mode 100644
index 0000000..f3f9378
--- /dev/null
+++ b/lib/dns/rdata/generic/cname_5.c
@@ -0,0 +1,231 @@
+/*
+ * 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_CNAME_5_C
+#define RDATA_GENERIC_CNAME_5_C
+
+#define RRTYPE_CNAME_ATTRIBUTES \
+	(DNS_RDATATYPEATTR_EXCLUSIVE | DNS_RDATATYPEATTR_SINGLETON)
+
+static isc_result_t
+fromtext_cname(ARGS_FROMTEXT) {
+	isc_token_t token;
+	dns_name_t name;
+	isc_buffer_t buffer;
+
+	REQUIRE(type == dns_rdatatype_cname);
+
+	UNUSED(type);
+	UNUSED(rdclass);
+	UNUSED(callbacks);
+
+	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 (ISC_R_SUCCESS);
+}
+
+static isc_result_t
+totext_cname(ARGS_TOTEXT) {
+	isc_region_t region;
+	dns_name_t name;
+	dns_name_t prefix;
+	bool sub;
+
+	REQUIRE(rdata->type == dns_rdatatype_cname);
+	REQUIRE(rdata->length != 0);
+
+	dns_name_init(&name, NULL);
+	dns_name_init(&prefix, NULL);
+
+	dns_rdata_toregion(rdata, &region);
+	dns_name_fromregion(&name, &region);
+
+	sub = name_prefix(&name, tctx->origin, &prefix);
+
+	return (dns_name_totext(&prefix, sub, target));
+}
+
+static isc_result_t
+fromwire_cname(ARGS_FROMWIRE) {
+	dns_name_t name;
+
+	REQUIRE(type == dns_rdatatype_cname);
+
+	UNUSED(type);
+	UNUSED(rdclass);
+
+	dns_decompress_setmethods(dctx, DNS_COMPRESS_GLOBAL14);
+
+	dns_name_init(&name, NULL);
+	return (dns_name_fromwire(&name, source, dctx, options, target));
+}
+
+static isc_result_t
+towire_cname(ARGS_TOWIRE) {
+	dns_name_t name;
+	dns_offsets_t offsets;
+	isc_region_t region;
+
+	REQUIRE(rdata->type == dns_rdatatype_cname);
+	REQUIRE(rdata->length != 0);
+
+	dns_compress_setmethods(cctx, DNS_COMPRESS_GLOBAL14);
+
+	dns_name_init(&name, offsets);
+	dns_rdata_toregion(rdata, &region);
+	dns_name_fromregion(&name, &region);
+
+	return (dns_name_towire(&name, cctx, target));
+}
+
+static int
+compare_cname(ARGS_COMPARE) {
+	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_cname);
+	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);
+
+	return (dns_name_rdatacompare(&name1, &name2));
+}
+
+static isc_result_t
+fromstruct_cname(ARGS_FROMSTRUCT) {
+	dns_rdata_cname_t *cname = source;
+	isc_region_t region;
+
+	REQUIRE(type == dns_rdatatype_cname);
+	REQUIRE(cname != NULL);
+	REQUIRE(cname->common.rdtype == type);
+	REQUIRE(cname->common.rdclass == rdclass);
+
+	UNUSED(type);
+	UNUSED(rdclass);
+
+	dns_name_toregion(&cname->cname, &region);
+	return (isc_buffer_copyregion(target, &region));
+}
+
+static isc_result_t
+tostruct_cname(ARGS_TOSTRUCT) {
+	isc_region_t region;
+	dns_rdata_cname_t *cname = target;
+	dns_name_t name;
+
+	REQUIRE(rdata->type == dns_rdatatype_cname);
+	REQUIRE(cname != NULL);
+	REQUIRE(rdata->length != 0);
+
+	cname->common.rdclass = rdata->rdclass;
+	cname->common.rdtype = rdata->type;
+	ISC_LINK_INIT(&cname->common, link);
+
+	dns_name_init(&name, NULL);
+	dns_rdata_toregion(rdata, &region);
+	dns_name_fromregion(&name, &region);
+	dns_name_init(&cname->cname, NULL);
+	name_duporclone(&name, mctx, &cname->cname);
+	cname->mctx = mctx;
+	return (ISC_R_SUCCESS);
+}
+
+static void
+freestruct_cname(ARGS_FREESTRUCT) {
+	dns_rdata_cname_t *cname = source;
+
+	REQUIRE(cname != NULL);
+
+	if (cname->mctx == NULL) {
+		return;
+	}
+
+	dns_name_free(&cname->cname, cname->mctx);
+	cname->mctx = NULL;
+}
+
+static isc_result_t
+additionaldata_cname(ARGS_ADDLDATA) {
+	UNUSED(rdata);
+	UNUSED(owner);
+	UNUSED(add);
+	UNUSED(arg);
+
+	REQUIRE(rdata->type == dns_rdatatype_cname);
+
+	return (ISC_R_SUCCESS);
+}
+
+static isc_result_t
+digest_cname(ARGS_DIGEST) {
+	isc_region_t r;
+	dns_name_t name;
+
+	REQUIRE(rdata->type == dns_rdatatype_cname);
+
+	dns_rdata_toregion(rdata, &r);
+	dns_name_init(&name, NULL);
+	dns_name_fromregion(&name, &r);
+
+	return (dns_name_digest(&name, digest, arg));
+}
+
+static bool
+checkowner_cname(ARGS_CHECKOWNER) {
+	REQUIRE(type == dns_rdatatype_cname);
+
+	UNUSED(name);
+	UNUSED(type);
+	UNUSED(rdclass);
+	UNUSED(wildcard);
+
+	return (true);
+}
+
+static bool
+checknames_cname(ARGS_CHECKNAMES) {
+	REQUIRE(rdata->type == dns_rdatatype_cname);
+
+	UNUSED(rdata);
+	UNUSED(owner);
+	UNUSED(bad);
+
+	return (true);
+}
+
+static int
+casecompare_cname(ARGS_COMPARE) {
+	return (compare_cname(rdata1, rdata2));
+}
+
+#endif /* RDATA_GENERIC_CNAME_5_C */