/contrib/bind9/lib/dns/rdata/generic/rt_21.c
https://bitbucket.org/freebsd/freebsd-head/ · C · 316 lines · 233 code · 64 blank · 19 comment · 50 complexity · dddf265d37ee0c4f3acebac7c28f7376 MD5 · raw file
- /*
- * Copyright (C) 2004, 2005, 2007, 2009 Internet Systems Consortium, Inc. ("ISC")
- * Copyright (C) 1999-2001, 2003 Internet Software Consortium.
- *
- * Permission to use, copy, modify, and/or distribute this software for any
- * purpose with or without fee is hereby granted, provided that the above
- * copyright notice and this permission notice appear in all copies.
- *
- * THE SOFTWARE IS PROVIDED "AS IS" AND ISC DISCLAIMS ALL WARRANTIES WITH
- * REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY
- * AND FITNESS. IN NO EVENT SHALL ISC BE LIABLE FOR ANY SPECIAL, DIRECT,
- * INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM
- * LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE
- * OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
- * PERFORMANCE OF THIS SOFTWARE.
- */
- /* $Id: rt_21.c,v 1.48 2009/12/04 22:06:37 tbox Exp $ */
- /* reviewed: Thu Mar 16 15:02:31 PST 2000 by brister */
- /* RFC1183 */
- #ifndef RDATA_GENERIC_RT_21_C
- #define RDATA_GENERIC_RT_21_C
- #define RRTYPE_RT_ATTRIBUTES (0)
- static inline isc_result_t
- fromtext_rt(ARGS_FROMTEXT) {
- isc_token_t token;
- dns_name_t name;
- isc_buffer_t buffer;
- isc_boolean_t ok;
- REQUIRE(type == 21);
- UNUSED(type);
- UNUSED(rdclass);
- UNUSED(callbacks);
- RETERR(isc_lex_getmastertoken(lexer, &token, isc_tokentype_number,
- ISC_FALSE));
- if (token.value.as_ulong > 0xffffU)
- RETTOK(ISC_R_RANGE);
- RETERR(uint16_tobuffer(token.value.as_ulong, target));
- RETERR(isc_lex_getmastertoken(lexer, &token, isc_tokentype_string,
- ISC_FALSE));
- dns_name_init(&name, NULL);
- buffer_fromregion(&buffer, &token.value.as_region);
- origin = (origin != NULL) ? origin : dns_rootname;
- RETTOK(dns_name_fromtext(&name, &buffer, origin, options, target));
- ok = ISC_TRUE;
- if ((options & DNS_RDATA_CHECKNAMES) != 0)
- ok = dns_name_ishostname(&name, ISC_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 inline isc_result_t
- totext_rt(ARGS_TOTEXT) {
- isc_region_t region;
- dns_name_t name;
- dns_name_t prefix;
- isc_boolean_t sub;
- char buf[sizeof("64000")];
- unsigned short num;
- REQUIRE(rdata->type == 21);
- REQUIRE(rdata->length != 0);
- dns_name_init(&name, NULL);
- dns_name_init(&prefix, NULL);
- dns_rdata_toregion(rdata, ®ion);
- num = uint16_fromregion(®ion);
- isc_region_consume(®ion, 2);
- sprintf(buf, "%u", num);
- RETERR(str_totext(buf, target));
- RETERR(str_totext(" ", target));
- dns_name_fromregion(&name, ®ion);
- sub = name_prefix(&name, tctx->origin, &prefix);
- return (dns_name_totext(&prefix, sub, target));
- }
- static inline isc_result_t
- fromwire_rt(ARGS_FROMWIRE) {
- dns_name_t name;
- isc_region_t sregion;
- isc_region_t tregion;
- REQUIRE(type == 21);
- UNUSED(type);
- UNUSED(rdclass);
- dns_decompress_setmethods(dctx, DNS_COMPRESS_NONE);
- dns_name_init(&name, NULL);
- isc_buffer_activeregion(source, &sregion);
- isc_buffer_availableregion(target, &tregion);
- if (tregion.length < 2)
- return (ISC_R_NOSPACE);
- if (sregion.length < 2)
- return (ISC_R_UNEXPECTEDEND);
- memcpy(tregion.base, sregion.base, 2);
- isc_buffer_forward(source, 2);
- isc_buffer_add(target, 2);
- return (dns_name_fromwire(&name, source, dctx, options, target));
- }
- static inline isc_result_t
- towire_rt(ARGS_TOWIRE) {
- dns_name_t name;
- dns_offsets_t offsets;
- isc_region_t region;
- isc_region_t tr;
- REQUIRE(rdata->type == 21);
- REQUIRE(rdata->length != 0);
- dns_compress_setmethods(cctx, DNS_COMPRESS_NONE);
- isc_buffer_availableregion(target, &tr);
- dns_rdata_toregion(rdata, ®ion);
- if (tr.length < 2)
- return (ISC_R_NOSPACE);
- memcpy(tr.base, region.base, 2);
- isc_region_consume(®ion, 2);
- isc_buffer_add(target, 2);
- dns_name_init(&name, offsets);
- dns_name_fromregion(&name, ®ion);
- return (dns_name_towire(&name, cctx, target));
- }
- static inline int
- compare_rt(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 == 21);
- REQUIRE(rdata1->length != 0);
- REQUIRE(rdata2->length != 0);
- order = memcmp(rdata1->data, rdata2->data, 2);
- if (order != 0)
- return (order < 0 ? -1 : 1);
- dns_name_init(&name1, NULL);
- dns_name_init(&name2, NULL);
- dns_rdata_toregion(rdata1, ®ion1);
- dns_rdata_toregion(rdata2, ®ion2);
- isc_region_consume(®ion1, 2);
- isc_region_consume(®ion2, 2);
- dns_name_fromregion(&name1, ®ion1);
- dns_name_fromregion(&name2, ®ion2);
- return (dns_name_rdatacompare(&name1, &name2));
- }
- static inline isc_result_t
- fromstruct_rt(ARGS_FROMSTRUCT) {
- dns_rdata_rt_t *rt = source;
- isc_region_t region;
- REQUIRE(type == 21);
- REQUIRE(source != NULL);
- REQUIRE(rt->common.rdtype == type);
- REQUIRE(rt->common.rdclass == rdclass);
- UNUSED(type);
- UNUSED(rdclass);
- RETERR(uint16_tobuffer(rt->preference, target));
- dns_name_toregion(&rt->host, ®ion);
- return (isc_buffer_copyregion(target, ®ion));
- }
- static inline isc_result_t
- tostruct_rt(ARGS_TOSTRUCT) {
- isc_region_t region;
- dns_rdata_rt_t *rt = target;
- dns_name_t name;
- REQUIRE(rdata->type == 21);
- REQUIRE(target != NULL);
- REQUIRE(rdata->length != 0);
- rt->common.rdclass = rdata->rdclass;
- rt->common.rdtype = rdata->type;
- ISC_LINK_INIT(&rt->common, link);
- dns_name_init(&name, NULL);
- dns_rdata_toregion(rdata, ®ion);
- rt->preference = uint16_fromregion(®ion);
- isc_region_consume(®ion, 2);
- dns_name_fromregion(&name, ®ion);
- dns_name_init(&rt->host, NULL);
- RETERR(name_duporclone(&name, mctx, &rt->host));
- rt->mctx = mctx;
- return (ISC_R_SUCCESS);
- }
- static inline void
- freestruct_rt(ARGS_FREESTRUCT) {
- dns_rdata_rt_t *rt = source;
- REQUIRE(source != NULL);
- REQUIRE(rt->common.rdtype == 21);
- if (rt->mctx == NULL)
- return;
- dns_name_free(&rt->host, rt->mctx);
- rt->mctx = NULL;
- }
- static inline isc_result_t
- additionaldata_rt(ARGS_ADDLDATA) {
- dns_name_t name;
- dns_offsets_t offsets;
- isc_region_t region;
- isc_result_t result;
- REQUIRE(rdata->type == 21);
- dns_name_init(&name, offsets);
- dns_rdata_toregion(rdata, ®ion);
- isc_region_consume(®ion, 2);
- dns_name_fromregion(&name, ®ion);
- result = (add)(arg, &name, dns_rdatatype_x25);
- if (result != ISC_R_SUCCESS)
- return (result);
- result = (add)(arg, &name, dns_rdatatype_isdn);
- if (result != ISC_R_SUCCESS)
- return (result);
- return ((add)(arg, &name, dns_rdatatype_a));
- }
- static inline isc_result_t
- digest_rt(ARGS_DIGEST) {
- isc_region_t r1, r2;
- isc_result_t result;
- dns_name_t name;
- REQUIRE(rdata->type == 21);
- dns_rdata_toregion(rdata, &r1);
- r2 = r1;
- isc_region_consume(&r2, 2);
- r1.length = 2;
- result = (digest)(arg, &r1);
- if (result != ISC_R_SUCCESS)
- return (result);
- dns_name_init(&name, NULL);
- dns_name_fromregion(&name, &r2);
- return (dns_name_digest(&name, digest, arg));
- }
- static inline isc_boolean_t
- checkowner_rt(ARGS_CHECKOWNER) {
- REQUIRE(type == 21);
- UNUSED(name);
- UNUSED(type);
- UNUSED(rdclass);
- UNUSED(wildcard);
- return (ISC_TRUE);
- }
- static inline isc_boolean_t
- checknames_rt(ARGS_CHECKNAMES) {
- isc_region_t region;
- dns_name_t name;
- REQUIRE(rdata->type == 21);
- UNUSED(owner);
- dns_rdata_toregion(rdata, ®ion);
- isc_region_consume(®ion, 2);
- dns_name_init(&name, NULL);
- dns_name_fromregion(&name, ®ion);
- if (!dns_name_ishostname(&name, ISC_FALSE)) {
- if (bad != NULL)
- dns_name_clone(&name, bad);
- return (ISC_FALSE);
- }
- return (ISC_TRUE);
- }
- static inline int
- casecompare_rt(ARGS_COMPARE) {
- return (compare_rt(rdata1, rdata2));
- }
- #endif /* RDATA_GENERIC_RT_21_C */