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/*
* Copyright (C) 2004 Internet Systems Consortium, Inc. ("ISC")
* Copyright (C) 1998-2001 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: ptr_12.c,v 1.39.206.2 2004/03/06 08:14:11 marka Exp $ */
/* Reviewed: Thu Mar 16 14:05:12 PST 2000 by explorer */
#ifndef RDATA_GENERIC_PTR_12_C
#define RDATA_GENERIC_PTR_12_C
#define RRTYPE_PTR_ATTRIBUTES (0)
static inline isc_result_t
fromtext_ptr(ARGS_FROMTEXT) {
isc_token_t token;
dns_name_t name;
isc_buffer_t buffer;
REQUIRE(type == 12);
UNUSED(type);
UNUSED(rdclass);
UNUSED(callbacks);
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));
if (rdclass == dns_rdataclass_in &&
(options & DNS_RDATA_CHECKNAMES) != 0 &&
(options & DNS_RDATA_CHECKREVERSE) != 0) {
isc_boolean_t ok;
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_ptr(ARGS_TOTEXT) {
isc_region_t region;
dns_name_t name;
dns_name_t prefix;
isc_boolean_t sub;
REQUIRE(rdata->type == 12);
REQUIRE(rdata->length != 0);
dns_name_init(&name, NULL);
dns_name_init(&prefix, NULL);
dns_rdata_toregion(rdata, ®ion);
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_ptr(ARGS_FROMWIRE) {
dns_name_t name;
REQUIRE(type == 12);
UNUSED(type);
UNUSED(rdclass);
dns_decompress_setmethods(dctx, DNS_COMPRESS_GLOBAL14);
dns_name_init(&name, NULL);
return (dns_name_fromwire(&name, source, dctx, options, target));
}
static inline isc_result_t
towire_ptr(ARGS_TOWIRE) {
dns_name_t name;
dns_offsets_t offsets;
isc_region_t region;
REQUIRE(rdata->type == 12);
REQUIRE(rdata->length != 0);
dns_compress_setmethods(cctx, DNS_COMPRESS_GLOBAL14);
dns_name_init(&name, offsets);
dns_rdata_toregion(rdata, ®ion);
dns_name_fromregion(&name, ®ion);
return (dns_name_towire(&name, cctx, target));
}
static inline int
compare_ptr(ARGS_COMPARE) {
dns_name_t name1;
dns_name_t name2;
isc_region_t region1;
isc_region_t region2;
REQUIRE(rdata1->type == rdata2->type);
REQUIRE(rdata1->rdclass == rdata2->rdclass);
REQUIRE(rdata1->type == 12);
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);
return (dns_name_rdatacompare(&name1, &name2));
}
static inline isc_result_t
fromstruct_ptr(ARGS_FROMSTRUCT) {
dns_rdata_ptr_t *ptr = source;
isc_region_t region;
REQUIRE(type == 12);
REQUIRE(source != NULL);
REQUIRE(ptr->common.rdtype == type);
REQUIRE(ptr->common.rdclass == rdclass);
UNUSED(type);
UNUSED(rdclass);
dns_name_toregion(&ptr->ptr, ®ion);
return (isc_buffer_copyregion(target, ®ion));
}
static inline isc_result_t
tostruct_ptr(ARGS_TOSTRUCT) {
isc_region_t region;
dns_rdata_ptr_t *ptr = target;
dns_name_t name;
REQUIRE(rdata->type == 12);
REQUIRE(target != NULL);
REQUIRE(rdata->length != 0);
ptr->common.rdclass = rdata->rdclass;
ptr->common.rdtype = rdata->type;
ISC_LINK_INIT(&ptr->common, link);
dns_name_init(&name, NULL);
dns_rdata_toregion(rdata, ®ion);
dns_name_fromregion(&name, ®ion);
dns_name_init(&ptr->ptr, NULL);
RETERR(name_duporclone(&name, mctx, &ptr->ptr));
ptr->mctx = mctx;
return (ISC_R_SUCCESS);
}
static inline void
freestruct_ptr(ARGS_FREESTRUCT) {
dns_rdata_ptr_t *ptr = source;
REQUIRE(source != NULL);
REQUIRE(ptr->common.rdtype == 12);
if (ptr->mctx == NULL)
return;
dns_name_free(&ptr->ptr, ptr->mctx);
ptr->mctx = NULL;
}
static inline isc_result_t
additionaldata_ptr(ARGS_ADDLDATA) {
REQUIRE(rdata->type == 12);
UNUSED(rdata);
UNUSED(add);
UNUSED(arg);
return (ISC_R_SUCCESS);
}
static inline isc_result_t
digest_ptr(ARGS_DIGEST) {
isc_region_t r;
dns_name_t name;
REQUIRE(rdata->type == 12);
dns_rdata_toregion(rdata, &r);
dns_name_init(&name, NULL);
dns_name_fromregion(&name, &r);
return (dns_name_digest(&name, digest, arg));
}
static inline isc_boolean_t
checkowner_ptr(ARGS_CHECKOWNER) {
REQUIRE(type == 12);
UNUSED(name);
UNUSED(type);
UNUSED(rdclass);
UNUSED(wildcard);
return (ISC_TRUE);
}
static unsigned char ip6_arpa_data[] = "\003IP6\004ARPA";
static unsigned char ip6_arpa_offsets[] = { 0, 4, 9 };
static const dns_name_t ip6_arpa =
{
DNS_NAME_MAGIC,
ip6_arpa_data, 10, 3,
DNS_NAMEATTR_READONLY | DNS_NAMEATTR_ABSOLUTE,
ip6_arpa_offsets, NULL,
{(void *)-1, (void *)-1},
{NULL, NULL}
};
static unsigned char ip6_int_data[] = "\003IP6\003INT";
static unsigned char ip6_int_offsets[] = { 0, 4, 8 };
static const dns_name_t ip6_int =
{
DNS_NAME_MAGIC,
ip6_int_data, 9, 3,
DNS_NAMEATTR_READONLY | DNS_NAMEATTR_ABSOLUTE,
ip6_int_offsets, NULL,
{(void *)-1, (void *)-1},
{NULL, NULL}
};
static unsigned char in_addr_arpa_data[] = "\007IN-ADDR\004ARPA";
static unsigned char in_addr_arpa_offsets[] = { 0, 8, 13 };
static const dns_name_t in_addr_arpa =
{
DNS_NAME_MAGIC,
in_addr_arpa_data, 14, 3,
DNS_NAMEATTR_READONLY | DNS_NAMEATTR_ABSOLUTE,
in_addr_arpa_offsets, NULL,
{(void *)-1, (void *)-1},
{NULL, NULL}
};
static inline isc_boolean_t
checknames_ptr(ARGS_CHECKNAMES) {
isc_region_t region;
dns_name_t name;
REQUIRE(rdata->type == 12);
if (rdata->rdclass != dns_rdataclass_in)
return (ISC_TRUE);
if (dns_name_issubdomain(owner, &in_addr_arpa) ||
dns_name_issubdomain(owner, &ip6_arpa) ||
dns_name_issubdomain(owner, &ip6_int)) {
dns_rdata_toregion(rdata, ®ion);
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);
}
#endif /* RDATA_GENERIC_PTR_12_C */
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