rt_21.c revision b7b6b01a0d0622181a4c28dd60401f0ab2480d00
/*
* Copyright (C) 2004, 2005 Internet Systems Consortium, Inc. ("ISC")
* Copyright (C) 1999-2001, 2003 Internet Software Consortium.
*
* Permission to use, copy, modify, and 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 1.43 2005/03/16 00:55:18 marka Exp $ */
/* reviewed: Thu Mar 16 15:02:31 PST 2000 by brister */
/* RFC 1183 */
#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, &region);
num = uint16_fromregion(&region);
isc_region_consume(&region, 2);
sprintf(buf, "%u", num);
RETERR(str_totext(buf, target));
RETERR(str_totext(" ", target));
dns_name_fromregion(&name, &region);
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, &region);
if (tr.length < 2)
return (ISC_R_NOSPACE);
memcpy(tr.base, region.base, 2);
isc_region_consume(&region, 2);
isc_buffer_add(target, 2);
dns_name_init(&name, offsets);
dns_name_fromregion(&name, &region);
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, &region1);
dns_rdata_toregion(rdata2, &region2);
isc_region_consume(&region1, 2);
isc_region_consume(&region2, 2);
dns_name_fromregion(&name1, &region1);
dns_name_fromregion(&name2, &region2);
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, &region);
return (isc_buffer_copyregion(target, &region));
}
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, &region);
rt->preference = uint16_fromregion(&region);
isc_region_consume(&region, 2);
dns_name_fromregion(&name, &region);
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, &region);
isc_region_consume(&region, 2);
dns_name_fromregion(&name, &region);
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, &region);
isc_region_consume(&region, 2);
dns_name_init(&name, NULL);
dns_name_fromregion(&name, &region);
if (!dns_name_ishostname(&name, ISC_FALSE)) {
if (bad != NULL)
dns_name_clone(&name, bad);
return (ISC_FALSE);
}
return (ISC_TRUE);
}
#endif /* RDATA_GENERIC_RT_21_C */