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-rw-r--r--lib/dns/rdata/generic/ptr_12.c278
1 files changed, 278 insertions, 0 deletions
diff --git a/lib/dns/rdata/generic/ptr_12.c b/lib/dns/rdata/generic/ptr_12.c
new file mode 100644
index 0000000..5d39300
--- /dev/null
+++ b/lib/dns/rdata/generic/ptr_12.c
@@ -0,0 +1,278 @@
+/*
+ * 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_PTR_12_C
+#define RDATA_GENERIC_PTR_12_C
+
+#define RRTYPE_PTR_ATTRIBUTES (0)
+
+static isc_result_t
+fromtext_ptr(ARGS_FROMTEXT) {
+ isc_token_t token;
+ dns_name_t name;
+ isc_buffer_t buffer;
+
+ REQUIRE(type == dns_rdatatype_ptr);
+
+ 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));
+ if (rdclass == dns_rdataclass_in &&
+ (options & DNS_RDATA_CHECKNAMES) != 0 &&
+ (options & DNS_RDATA_CHECKREVERSE) != 0)
+ {
+ bool ok;
+ ok = dns_name_ishostname(&name, false);
+ if (!ok && (options & DNS_RDATA_CHECKNAMESFAIL) != 0) {
+ RETTOK(DNS_R_BADNAME);
+ }
+ if (!ok && callbacks != NULL) {
+ warn_badname(&name, lexer, callbacks);
+ }
+ }
+ return (ISC_R_SUCCESS);
+}
+
+static isc_result_t
+totext_ptr(ARGS_TOTEXT) {
+ isc_region_t region;
+ dns_name_t name;
+ dns_name_t prefix;
+ bool sub;
+
+ REQUIRE(rdata->type == dns_rdatatype_ptr);
+ 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_ptr(ARGS_FROMWIRE) {
+ dns_name_t name;
+
+ REQUIRE(type == dns_rdatatype_ptr);
+
+ 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_ptr(ARGS_TOWIRE) {
+ dns_name_t name;
+ dns_offsets_t offsets;
+ isc_region_t region;
+
+ REQUIRE(rdata->type == dns_rdatatype_ptr);
+ 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_ptr(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_ptr);
+ 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_ptr(ARGS_FROMSTRUCT) {
+ dns_rdata_ptr_t *ptr = source;
+ isc_region_t region;
+
+ REQUIRE(type == dns_rdatatype_ptr);
+ REQUIRE(ptr != NULL);
+ REQUIRE(ptr->common.rdtype == type);
+ REQUIRE(ptr->common.rdclass == rdclass);
+
+ UNUSED(type);
+ UNUSED(rdclass);
+
+ dns_name_toregion(&ptr->ptr, &region);
+ return (isc_buffer_copyregion(target, &region));
+}
+
+static isc_result_t
+tostruct_ptr(ARGS_TOSTRUCT) {
+ isc_region_t region;
+ dns_rdata_ptr_t *ptr = target;
+ dns_name_t name;
+
+ REQUIRE(rdata->type == dns_rdatatype_ptr);
+ REQUIRE(ptr != NULL);
+ REQUIRE(rdata->length != 0);
+
+ ptr->common.rdclass = rdata->rdclass;
+ ptr->common.rdtype = rdata->type;
+ ISC_LINK_INIT(&ptr->common, link);
+
+ dns_name_init(&name, NULL);
+ dns_rdata_toregion(rdata, &region);
+ dns_name_fromregion(&name, &region);
+ dns_name_init(&ptr->ptr, NULL);
+ RETERR(name_duporclone(&name, mctx, &ptr->ptr));
+ ptr->mctx = mctx;
+ return (ISC_R_SUCCESS);
+}
+
+static void
+freestruct_ptr(ARGS_FREESTRUCT) {
+ dns_rdata_ptr_t *ptr = source;
+
+ REQUIRE(ptr != NULL);
+ REQUIRE(ptr->common.rdtype == dns_rdatatype_ptr);
+
+ if (ptr->mctx == NULL) {
+ return;
+ }
+
+ dns_name_free(&ptr->ptr, ptr->mctx);
+ ptr->mctx = NULL;
+}
+
+static isc_result_t
+additionaldata_ptr(ARGS_ADDLDATA) {
+ REQUIRE(rdata->type == dns_rdatatype_ptr);
+
+ UNUSED(rdata);
+ UNUSED(add);
+ UNUSED(arg);
+
+ return (ISC_R_SUCCESS);
+}
+
+static isc_result_t
+digest_ptr(ARGS_DIGEST) {
+ isc_region_t r;
+ dns_name_t name;
+
+ REQUIRE(rdata->type == dns_rdatatype_ptr);
+
+ 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_ptr(ARGS_CHECKOWNER) {
+ REQUIRE(type == dns_rdatatype_ptr);
+
+ UNUSED(name);
+ UNUSED(type);
+ UNUSED(rdclass);
+ UNUSED(wildcard);
+
+ return (true);
+}
+
+static unsigned char ip6_arpa_data[] = "\003IP6\004ARPA";
+static unsigned char ip6_arpa_offsets[] = { 0, 4, 9 };
+static const dns_name_t ip6_arpa = DNS_NAME_INITABSOLUTE(ip6_arpa_data,
+ ip6_arpa_offsets);
+
+static unsigned char ip6_int_data[] = "\003IP6\003INT";
+static unsigned char ip6_int_offsets[] = { 0, 4, 8 };
+static const dns_name_t ip6_int = DNS_NAME_INITABSOLUTE(ip6_int_data,
+ ip6_int_offsets);
+
+static unsigned char in_addr_arpa_data[] = "\007IN-ADDR\004ARPA";
+static unsigned char in_addr_arpa_offsets[] = { 0, 8, 13 };
+static const dns_name_t in_addr_arpa =
+ DNS_NAME_INITABSOLUTE(in_addr_arpa_data, in_addr_arpa_offsets);
+
+static bool
+checknames_ptr(ARGS_CHECKNAMES) {
+ isc_region_t region;
+ dns_name_t name;
+
+ REQUIRE(rdata->type == dns_rdatatype_ptr);
+
+ if (rdata->rdclass != dns_rdataclass_in) {
+ return (true);
+ }
+
+ if (dns_name_isdnssd(owner)) {
+ return (true);
+ }
+
+ if (dns_name_issubdomain(owner, &in_addr_arpa) ||
+ dns_name_issubdomain(owner, &ip6_arpa) ||
+ dns_name_issubdomain(owner, &ip6_int))
+ {
+ dns_rdata_toregion(rdata, &region);
+ dns_name_init(&name, NULL);
+ dns_name_fromregion(&name, &region);
+ if (!dns_name_ishostname(&name, false)) {
+ if (bad != NULL) {
+ dns_name_clone(&name, bad);
+ }
+ return (false);
+ }
+ }
+ return (true);
+}
+
+static int
+casecompare_ptr(ARGS_COMPARE) {
+ return (compare_ptr(rdata1, rdata2));
+}
+#endif /* RDATA_GENERIC_PTR_12_C */