diff options
Diffstat (limited to 'lib/dns/rdata/in_1/a_1.c')
| -rw-r--r-- | lib/dns/rdata/in_1/a_1.c | 245 |
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 new file mode 100644 index 0000000..d277699 --- /dev/null +++ b/lib/dns/rdata/in_1/a_1.c @@ -0,0 +1,245 @@ +/* + * 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, ®ion); + 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, ®ion); + return (inet_totext(AF_INET, ®ion, 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, ®ion); + 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, ®ion); + n = uint32_fromregion(®ion); + 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 */ |