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-rw-r--r--lib/dns/rdata/in_1/a_1.c245
1 files changed, 245 insertions, 0 deletions
diff --git a/lib/dns/rdata/in_1/a_1.c b/lib/dns/rdata/in_1/a_1.c
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+/*
+ * Copyright (C) Internet Systems Consortium, Inc. ("ISC")
+ *
+ * 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 http://mozilla.org/MPL/2.0/.
+ *
+ * See the COPYRIGHT file distributed with this work for additional
+ * information regarding copyright ownership.
+ */
+
+#ifndef RDATA_IN_1_A_1_C
+#define RDATA_IN_1_A_1_C
+
+#include <string.h>
+
+#include <isc/net.h>
+
+#define RRTYPE_A_ATTRIBUTES (0)
+
+static inline isc_result_t
+fromtext_in_a(ARGS_FROMTEXT) {
+ isc_token_t token;
+ struct in_addr addr;
+ isc_region_t region;
+
+ REQUIRE(type == dns_rdatatype_a);
+ REQUIRE(rdclass == dns_rdataclass_in);
+
+ UNUSED(type);
+ UNUSED(origin);
+ UNUSED(options);
+ UNUSED(rdclass);
+
+ RETERR(isc_lex_getmastertoken(lexer, &token, isc_tokentype_string,
+ false));
+
+ if (getquad(DNS_AS_STR(token), &addr, lexer, callbacks) != 1)
+ RETTOK(DNS_R_BADDOTTEDQUAD);
+ isc_buffer_availableregion(target, &region);
+ if (region.length < 4)
+ return (ISC_R_NOSPACE);
+ memmove(region.base, &addr, 4);
+ isc_buffer_add(target, 4);
+ return (ISC_R_SUCCESS);
+}
+
+static inline isc_result_t
+totext_in_a(ARGS_TOTEXT) {
+ isc_region_t region;
+
+ REQUIRE(rdata->type == dns_rdatatype_a);
+ REQUIRE(rdata->rdclass == dns_rdataclass_in);
+ REQUIRE(rdata->length == 4);
+
+ UNUSED(tctx);
+
+ dns_rdata_toregion(rdata, &region);
+ return (inet_totext(AF_INET, &region, target));
+}
+
+static inline isc_result_t
+fromwire_in_a(ARGS_FROMWIRE) {
+ isc_region_t sregion;
+ isc_region_t tregion;
+
+ REQUIRE(type == dns_rdatatype_a);
+ REQUIRE(rdclass == dns_rdataclass_in);
+
+ UNUSED(type);
+ UNUSED(dctx);
+ UNUSED(options);
+ UNUSED(rdclass);
+
+ isc_buffer_activeregion(source, &sregion);
+ isc_buffer_availableregion(target, &tregion);
+ if (sregion.length < 4)
+ return (ISC_R_UNEXPECTEDEND);
+ if (tregion.length < 4)
+ return (ISC_R_NOSPACE);
+
+ memmove(tregion.base, sregion.base, 4);
+ isc_buffer_forward(source, 4);
+ isc_buffer_add(target, 4);
+ return (ISC_R_SUCCESS);
+}
+
+static inline isc_result_t
+towire_in_a(ARGS_TOWIRE) {
+ isc_region_t region;
+
+ REQUIRE(rdata->type == dns_rdatatype_a);
+ REQUIRE(rdata->rdclass == dns_rdataclass_in);
+ REQUIRE(rdata->length == 4);
+
+ UNUSED(cctx);
+
+ isc_buffer_availableregion(target, &region);
+ if (region.length < rdata->length)
+ return (ISC_R_NOSPACE);
+ memmove(region.base, rdata->data, rdata->length);
+ isc_buffer_add(target, 4);
+ return (ISC_R_SUCCESS);
+}
+
+static inline int
+compare_in_a(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_a);
+ REQUIRE(rdata1->rdclass == dns_rdataclass_in);
+ REQUIRE(rdata1->length == 4);
+ REQUIRE(rdata2->length == 4);
+
+ dns_rdata_toregion(rdata1, &r1);
+ dns_rdata_toregion(rdata2, &r2);
+ return (isc_region_compare(&r1, &r2));
+}
+
+static inline isc_result_t
+fromstruct_in_a(ARGS_FROMSTRUCT) {
+ dns_rdata_in_a_t *a = source;
+ uint32_t n;
+
+ REQUIRE(type == dns_rdatatype_a);
+ REQUIRE(rdclass == dns_rdataclass_in);
+ REQUIRE(source != NULL);
+ REQUIRE(a->common.rdtype == type);
+ REQUIRE(a->common.rdclass == rdclass);
+
+ UNUSED(type);
+ UNUSED(rdclass);
+
+ n = ntohl(a->in_addr.s_addr);
+
+ return (uint32_tobuffer(n, target));
+}
+
+
+static inline isc_result_t
+tostruct_in_a(ARGS_TOSTRUCT) {
+ dns_rdata_in_a_t *a = target;
+ uint32_t n;
+ isc_region_t region;
+
+ REQUIRE(rdata->type == dns_rdatatype_a);
+ REQUIRE(rdata->rdclass == dns_rdataclass_in);
+ REQUIRE(rdata->length == 4);
+
+ UNUSED(mctx);
+
+ a->common.rdclass = rdata->rdclass;
+ a->common.rdtype = rdata->type;
+ ISC_LINK_INIT(&a->common, link);
+
+ dns_rdata_toregion(rdata, &region);
+ n = uint32_fromregion(&region);
+ a->in_addr.s_addr = htonl(n);
+
+ return (ISC_R_SUCCESS);
+}
+
+static inline void
+freestruct_in_a(ARGS_FREESTRUCT) {
+ dns_rdata_in_a_t *a = source;
+
+ REQUIRE(source != NULL);
+ REQUIRE(a->common.rdtype == dns_rdatatype_a);
+ REQUIRE(a->common.rdclass == dns_rdataclass_in);
+
+ UNUSED(a);
+}
+
+static inline isc_result_t
+additionaldata_in_a(ARGS_ADDLDATA) {
+ REQUIRE(rdata->type == dns_rdatatype_a);
+ REQUIRE(rdata->rdclass == dns_rdataclass_in);
+
+ UNUSED(rdata);
+ UNUSED(add);
+ UNUSED(arg);
+
+ return (ISC_R_SUCCESS);
+}
+
+static inline isc_result_t
+digest_in_a(ARGS_DIGEST) {
+ isc_region_t r;
+
+ REQUIRE(rdata->type == dns_rdatatype_a);
+ REQUIRE(rdata->rdclass == dns_rdataclass_in);
+
+ dns_rdata_toregion(rdata, &r);
+
+ return ((digest)(arg, &r));
+}
+
+static inline bool
+checkowner_in_a(ARGS_CHECKOWNER) {
+ dns_name_t prefix, suffix;
+
+ REQUIRE(type == dns_rdatatype_a);
+ REQUIRE(rdclass == dns_rdataclass_in);
+
+ UNUSED(type);
+ UNUSED(rdclass);
+
+ /*
+ * Handle Active Diretory gc._msdcs.<forest> name.
+ */
+ if (dns_name_countlabels(name) > 2U) {
+ dns_name_init(&prefix, NULL);
+ dns_name_init(&suffix, NULL);
+ dns_name_split(name, dns_name_countlabels(name) - 2,
+ &prefix, &suffix);
+ if (dns_name_equal(&gc_msdcs, &prefix) &&
+ dns_name_ishostname(&suffix, false))
+ return (true);
+ }
+
+ return (dns_name_ishostname(name, wildcard));
+}
+
+static inline bool
+checknames_in_a(ARGS_CHECKNAMES) {
+
+ REQUIRE(rdata->type == dns_rdatatype_a);
+ REQUIRE(rdata->rdclass == dns_rdataclass_in);
+
+ UNUSED(rdata);
+ UNUSED(owner);
+ UNUSED(bad);
+
+ return (true);
+}
+
+static inline int
+casecompare_in_a(ARGS_COMPARE) {
+ return (compare_in_a(rdata1, rdata2));
+}
+
+#endif /* RDATA_IN_1_A_1_C */