srv_33.c revision 40f53fa8d9c6a4fc38c0014495e7a42b08f52481
/*
* Copyright (C) 1999, 2000 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 INTERNET SOFTWARE CONSORTIUM
* DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL
* INTERNET SOFTWARE CONSORTIUM 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: srv_33.c,v 1.28 2000/08/01 01:26:34 tale Exp $ */
/* Reviewed: Fri Mar 17 13:01:00 PST 2000 by bwelling */
/* RFC 2782 */
#ifndef RDATA_IN_1_SRV_33_C
#define RDATA_IN_1_SRV_33_C
#define RRTYPE_SRV_ATTRIBUTES (0)
static inline isc_result_t
fromtext_in_srv(ARGS_FROMTEXT) {
isc_token_t token;
dns_name_t name;
isc_buffer_t buffer;
REQUIRE(type == 33);
REQUIRE(rdclass == 1);
/*
* Priority.
*/
RETERR(gettoken(lexer, &token, isc_tokentype_number, ISC_FALSE));
if (token.value.as_ulong > 0xffff)
return (ISC_R_RANGE);
RETERR(uint16_tobuffer(token.value.as_ulong, target));
/*
* Weight.
*/
RETERR(gettoken(lexer, &token, isc_tokentype_number, ISC_FALSE));
if (token.value.as_ulong > 0xffff)
return (ISC_R_RANGE);
RETERR(uint16_tobuffer(token.value.as_ulong, target));
/*
* Port.
*/
RETERR(gettoken(lexer, &token, isc_tokentype_number, ISC_FALSE));
if (token.value.as_ulong > 0xffff)
return (ISC_R_RANGE);
RETERR(uint16_tobuffer(token.value.as_ulong, target));
/*
* Target.
*/
RETERR(gettoken(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;
return (dns_name_fromtext(&name, &buffer, origin, downcase, target));
}
static inline isc_result_t
totext_in_srv(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 == 33);
REQUIRE(rdata->rdclass == 1);
dns_name_init(&name, NULL);
dns_name_init(&prefix, NULL);
/*
* Priority.
*/
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));
/*
* Weight.
*/
num = uint16_fromregion(&region);
isc_region_consume(&region, 2);
sprintf(buf, "%u", num);
RETERR(str_totext(buf, target));
RETERR(str_totext(" ", target));
/*
* Port.
*/
num = uint16_fromregion(&region);
isc_region_consume(&region, 2);
sprintf(buf, "%u", num);
RETERR(str_totext(buf, target));
RETERR(str_totext(" ", target));
/*
* 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_in_srv(ARGS_FROMWIRE) {
dns_name_t name;
isc_region_t sr;
REQUIRE(type == 33);
REQUIRE(rdclass == 1);
dns_decompress_setmethods(dctx, DNS_COMPRESS_NONE);
dns_name_init(&name, NULL);
/*
* Priority, weight, port.
*/
isc_buffer_activeregion(source, &sr);
if (sr.length < 6)
return (ISC_R_UNEXPECTEDEND);
RETERR(mem_tobuffer(target, sr.base, 6));
isc_buffer_forward(source, 6);
/*
* Target.
*/
return (dns_name_fromwire(&name, source, dctx, downcase, target));
}
static inline isc_result_t
towire_in_srv(ARGS_TOWIRE) {
dns_name_t name;
isc_region_t sr;
REQUIRE(rdata->type == 33);
dns_compress_setmethods(cctx, DNS_COMPRESS_NONE);
/*
* Priority, weight, port.
*/
dns_rdata_toregion(rdata, &sr);
RETERR(mem_tobuffer(target, sr.base, 6));
isc_region_consume(&sr, 6);
/*
* Target.
*/
dns_name_init(&name, NULL);
dns_name_fromregion(&name, &sr);
return (dns_name_towire(&name, cctx, target));
}
static inline int
compare_in_srv(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 == 33);
REQUIRE(rdata1->rdclass == 1);
/*
* Priority, weight, port.
*/
order = memcmp(rdata1->data, rdata2->data, 6);
if (order != 0)
return (order < 0 ? -1 : 1);
/*
* Target.
*/
dns_name_init(&name1, NULL);
dns_name_init(&name2, NULL);
dns_rdata_toregion(rdata1, &region1);
dns_rdata_toregion(rdata2, &region2);
isc_region_consume(&region1, 6);
isc_region_consume(&region2, 6);
dns_name_fromregion(&name1, &region1);
dns_name_fromregion(&name2, &region2);
return (dns_name_rdatacompare(&name1, &name2));
}
static inline isc_result_t
fromstruct_in_srv(ARGS_FROMSTRUCT) {
dns_rdata_in_srv_t *srv = source;
isc_region_t region;
REQUIRE(type == 33);
REQUIRE(rdclass == 1);
REQUIRE(source != NULL);
REQUIRE(srv->common.rdtype == type);
REQUIRE(srv->common.rdclass == rdclass);
RETERR(uint16_tobuffer(srv->priority, target));
RETERR(uint16_tobuffer(srv->weight, target));
RETERR(uint16_tobuffer(srv->port, target));
dns_name_toregion(&srv->target, &region);
return (isc_buffer_copyregion(target, &region));
}
static inline isc_result_t
tostruct_in_srv(ARGS_TOSTRUCT) {
isc_region_t region;
dns_rdata_in_srv_t *srv = target;
dns_name_t name;
REQUIRE(rdata->rdclass == 1);
REQUIRE(rdata->type == 33);
REQUIRE(target != NULL);
srv->common.rdclass = rdata->rdclass;
srv->common.rdtype = rdata->type;
ISC_LINK_INIT(&srv->common, link);
dns_name_init(&name, NULL);
dns_rdata_toregion(rdata, &region);
srv->priority = uint16_fromregion(&region);
isc_region_consume(&region, 2);
srv->weight = uint16_fromregion(&region);
isc_region_consume(&region, 2);
srv->port = uint16_fromregion(&region);
isc_region_consume(&region, 2);
dns_name_fromregion(&name, &region);
dns_name_init(&srv->target, NULL);
RETERR(name_duporclone(&name, mctx, &srv->target));
srv->mctx = mctx;
return (ISC_R_SUCCESS);
}
static inline void
freestruct_in_srv(ARGS_FREESTRUCT) {
dns_rdata_in_srv_t *srv = source;
REQUIRE(source != NULL);
REQUIRE(srv->common.rdclass == 1);
REQUIRE(srv->common.rdtype == 33);
if (srv->mctx == NULL)
return;
dns_name_free(&srv->target, srv->mctx);
srv->mctx = NULL;
}
static inline isc_result_t
additionaldata_in_srv(ARGS_ADDLDATA) {
dns_name_t name;
isc_region_t region;
REQUIRE(rdata->type == 33);
REQUIRE(rdata->rdclass == 1);
dns_name_init(&name, NULL);
dns_rdata_toregion(rdata, &region);
isc_region_consume(&region, 6);
dns_name_fromregion(&name, &region);
return ((add)(arg, &name, dns_rdatatype_a));
}
static inline isc_result_t
digest_in_srv(ARGS_DIGEST) {
isc_region_t r1, r2;
dns_name_t name;
REQUIRE(rdata->type == 33);
REQUIRE(rdata->rdclass == 1);
dns_rdata_toregion(rdata, &r1);
r2 = r1;
isc_region_consume(&r2, 6);
r1.length = 6;
RETERR((digest)(arg, &r1));
dns_name_init(&name, NULL);
dns_name_fromregion(&name, &r2);
return (dns_name_digest(&name, digest, arg));
}
#endif /* RDATA_IN_1_SRV_33_C */