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-rw-r--r--lib/dns/rdata/ch_3/a_1.c314
1 files changed, 314 insertions, 0 deletions
diff --git a/lib/dns/rdata/ch_3/a_1.c b/lib/dns/rdata/ch_3/a_1.c
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+++ b/lib/dns/rdata/ch_3/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.
+ */
+
+
+/* by Bjorn.Victor@it.uu.se, 2005-05-07 */
+/* Based on generic/soa_6.c and generic/mx_15.c */
+
+#ifndef RDATA_CH_3_A_1_C
+#define RDATA_CH_3_A_1_C
+
+#include <isc/net.h>
+
+#define RRTYPE_A_ATTRIBUTES (0)
+
+static inline isc_result_t
+fromtext_ch_a(ARGS_FROMTEXT) {
+ isc_token_t token;
+ dns_name_t name;
+ isc_buffer_t buffer;
+
+ REQUIRE(type == dns_rdatatype_a);
+ REQUIRE(rdclass == dns_rdataclass_ch); /* 3 */
+
+ UNUSED(type);
+ UNUSED(callbacks);
+
+ RETERR(isc_lex_getmastertoken(lexer, &token, isc_tokentype_string,
+ false));
+
+ /* get domain name */
+ 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 ((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);
+ }
+
+ /* 16-bit octal address */
+ RETERR(isc_lex_getoctaltoken(lexer, &token, false));
+ if (token.value.as_ulong > 0xffffU)
+ RETTOK(ISC_R_RANGE);
+ return (uint16_tobuffer(token.value.as_ulong, target));
+}
+
+static inline isc_result_t
+totext_ch_a(ARGS_TOTEXT) {
+ isc_region_t region;
+ dns_name_t name;
+ dns_name_t prefix;
+ bool sub;
+ char buf[sizeof("0177777")];
+ uint16_t addr;
+
+ REQUIRE(rdata->type == dns_rdatatype_a);
+ REQUIRE(rdata->rdclass == dns_rdataclass_ch); /* 3 */
+ REQUIRE(rdata->length != 0);
+
+ dns_name_init(&name, NULL);
+ dns_name_init(&prefix, NULL);
+
+ dns_rdata_toregion(rdata, &region);
+ dns_name_fromregion(&name, &region);
+ isc_region_consume(&region, name_length(&name));
+ addr = uint16_fromregion(&region);
+
+ sub = name_prefix(&name, tctx->origin, &prefix);
+ RETERR(dns_name_totext(&prefix, sub, target));
+
+ snprintf(buf, sizeof(buf), "%o", addr); /* note octal */
+ RETERR(str_totext(" ", target));
+ return (str_totext(buf, target));
+}
+
+static inline isc_result_t
+fromwire_ch_a(ARGS_FROMWIRE) {
+ isc_region_t sregion;
+ isc_region_t tregion;
+ dns_name_t name;
+
+ REQUIRE(type == dns_rdatatype_a);
+ REQUIRE(rdclass == dns_rdataclass_ch);
+
+ UNUSED(type);
+ UNUSED(rdclass);
+
+ dns_decompress_setmethods(dctx, DNS_COMPRESS_GLOBAL14);
+
+ dns_name_init(&name, NULL);
+
+ RETERR(dns_name_fromwire(&name, source, dctx, options, target));
+
+ isc_buffer_activeregion(source, &sregion);
+ isc_buffer_availableregion(target, &tregion);
+ if (sregion.length < 2)
+ return (ISC_R_UNEXPECTEDEND);
+ if (tregion.length < 2)
+ return (ISC_R_NOSPACE);
+
+ memmove(tregion.base, sregion.base, 2);
+ isc_buffer_forward(source, 2);
+ isc_buffer_add(target, 2);
+
+ return (ISC_R_SUCCESS);
+}
+
+static inline isc_result_t
+towire_ch_a(ARGS_TOWIRE) {
+ dns_name_t name;
+ dns_offsets_t offsets;
+ isc_region_t sregion;
+ isc_region_t tregion;
+
+ REQUIRE(rdata->type == dns_rdatatype_a);
+ REQUIRE(rdata->rdclass == dns_rdataclass_ch);
+ REQUIRE(rdata->length != 0);
+
+ dns_compress_setmethods(cctx, DNS_COMPRESS_GLOBAL14);
+
+ dns_name_init(&name, offsets);
+
+ dns_rdata_toregion(rdata, &sregion);
+
+ dns_name_fromregion(&name, &sregion);
+ isc_region_consume(&sregion, name_length(&name));
+ RETERR(dns_name_towire(&name, cctx, target));
+
+ isc_buffer_availableregion(target, &tregion);
+ if (tregion.length < 2)
+ return (ISC_R_NOSPACE);
+
+ memmove(tregion.base, sregion.base, 2);
+ isc_buffer_add(target, 2);
+ return (ISC_R_SUCCESS);
+}
+
+static inline int
+compare_ch_a(ARGS_COMPARE) {
+ dns_name_t name1;
+ dns_name_t name2;
+ isc_region_t region1;
+ isc_region_t region2;
+ int order;
+
+ REQUIRE(rdata1->type == rdata2->type);
+ REQUIRE(rdata1->rdclass == rdata2->rdclass);
+ REQUIRE(rdata1->type == dns_rdatatype_a);
+ REQUIRE(rdata1->rdclass == dns_rdataclass_ch);
+ 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);
+ isc_region_consume(&region1, name_length(&name1));
+ isc_region_consume(&region2, name_length(&name2));
+
+ order = dns_name_rdatacompare(&name1, &name2);
+ if (order != 0)
+ return (order);
+
+ order = memcmp(region1.base, region2.base, 2);
+ if (order != 0)
+ order = (order < 0) ? -1 : 1;
+ return (order);
+}
+
+static inline isc_result_t
+fromstruct_ch_a(ARGS_FROMSTRUCT) {
+ dns_rdata_ch_a_t *a = source;
+ isc_region_t region;
+
+ REQUIRE(type == dns_rdatatype_a);
+ REQUIRE(source != NULL);
+ REQUIRE(a->common.rdtype == type);
+ REQUIRE(a->common.rdclass == rdclass);
+
+ UNUSED(type);
+ UNUSED(rdclass);
+
+ dns_name_toregion(&a->ch_addr_dom, &region);
+ RETERR(isc_buffer_copyregion(target, &region));
+
+ return (uint16_tobuffer(ntohs(a->ch_addr), target));
+}
+
+static inline isc_result_t
+tostruct_ch_a(ARGS_TOSTRUCT) {
+ dns_rdata_ch_a_t *a = target;
+ isc_region_t region;
+ dns_name_t name;
+
+ REQUIRE(rdata->type == dns_rdatatype_a);
+ REQUIRE(rdata->rdclass == dns_rdataclass_ch);
+ REQUIRE(rdata->length != 0);
+
+ a->common.rdclass = rdata->rdclass;
+ a->common.rdtype = rdata->type;
+ ISC_LINK_INIT(&a->common, link);
+
+ dns_rdata_toregion(rdata, &region);
+
+ dns_name_init(&name, NULL);
+ dns_name_fromregion(&name, &region);
+ isc_region_consume(&region, name_length(&name));
+
+ dns_name_init(&a->ch_addr_dom, NULL);
+ RETERR(name_duporclone(&name, mctx, &a->ch_addr_dom));
+ a->ch_addr = htons(uint16_fromregion(&region));
+ a->mctx = mctx;
+ return (ISC_R_SUCCESS);
+}
+
+static inline void
+freestruct_ch_a(ARGS_FREESTRUCT) {
+ dns_rdata_ch_a_t *a = source;
+
+ REQUIRE(source != NULL);
+ REQUIRE(a->common.rdtype == dns_rdatatype_a);
+
+ if (a->mctx == NULL)
+ return;
+
+ dns_name_free(&a->ch_addr_dom, a->mctx);
+ a->mctx = NULL;
+}
+
+static inline isc_result_t
+additionaldata_ch_a(ARGS_ADDLDATA) {
+
+ REQUIRE(rdata->type == dns_rdatatype_a);
+ REQUIRE(rdata->rdclass == dns_rdataclass_ch);
+
+ UNUSED(rdata);
+ UNUSED(add);
+ UNUSED(arg);
+
+ return (ISC_R_SUCCESS);
+}
+
+static inline isc_result_t
+digest_ch_a(ARGS_DIGEST) {
+ isc_region_t r;
+ dns_name_t name;
+
+ REQUIRE(rdata->type == dns_rdatatype_a);
+ REQUIRE(rdata->rdclass == dns_rdataclass_ch);
+
+ dns_rdata_toregion(rdata, &r);
+ dns_name_init(&name, NULL);
+ dns_name_fromregion(&name, &r);
+ isc_region_consume(&r, name_length(&name));
+ RETERR(dns_name_digest(&name, digest, arg));
+ return ((digest)(arg, &r));
+}
+
+static inline bool
+checkowner_ch_a(ARGS_CHECKOWNER) {
+
+ REQUIRE(type == dns_rdatatype_a);
+ REQUIRE(rdclass == dns_rdataclass_ch);
+
+ UNUSED(type);
+
+ return (dns_name_ishostname(name, wildcard));
+}
+
+static inline bool
+checknames_ch_a(ARGS_CHECKNAMES) {
+ isc_region_t region;
+ dns_name_t name;
+
+ REQUIRE(rdata->type == dns_rdatatype_a);
+ REQUIRE(rdata->rdclass == dns_rdataclass_ch);
+
+ UNUSED(owner);
+
+ 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 inline int
+casecompare_ch_a(ARGS_COMPARE) {
+ return (compare_ch_a(rdata1, rdata2));
+}
+#endif /* RDATA_CH_3_A_1_C */