diff options
Diffstat (limited to 'lib/dns/rdata/ch_3/a_1.c')
| -rw-r--r-- | lib/dns/rdata/ch_3/a_1.c | 314 |
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 new file mode 100644 index 0000000..94cae92 --- /dev/null +++ b/lib/dns/rdata/ch_3/a_1.c @@ -0,0 +1,314 @@ +/* + * 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, ®ion); + dns_name_fromregion(&name, ®ion); + isc_region_consume(®ion, name_length(&name)); + addr = uint16_fromregion(®ion); + + 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, ®ion1); + dns_rdata_toregion(rdata2, ®ion2); + + dns_name_fromregion(&name1, ®ion1); + dns_name_fromregion(&name2, ®ion2); + isc_region_consume(®ion1, name_length(&name1)); + isc_region_consume(®ion2, 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, ®ion); + RETERR(isc_buffer_copyregion(target, ®ion)); + + 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, ®ion); + + dns_name_init(&name, NULL); + dns_name_fromregion(&name, ®ion); + isc_region_consume(®ion, 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(®ion)); + 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, ®ion); + dns_name_init(&name, NULL); + dns_name_fromregion(&name, ®ion); + 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 */ |