/*
* Copyright (C) 1999-2001, 2003-2005, 2007, 2009, 2015, 2016 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/.
*/
/* $Id: srv_33.c,v 1.47 2009/12/04 22:06:37 tbox Exp $ */
/* Reviewed: Fri Mar 17 13:01:00 PST 2000 by bwelling */
/* RFC2782 */
#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;
isc_boolean_t ok;
REQUIRE(type == dns_rdatatype_srv);
REQUIRE(rdclass == dns_rdataclass_in);
UNUSED(type);
UNUSED(rdclass);
UNUSED(callbacks);
/*
* Priority.
*/
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));
/*
* Weight.
*/
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));
/*
* Port.
*/
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));
/*
* Target.
*/
RETERR(isc_lex_getmastertoken(lexer, &token, isc_tokentype_string,
ISC_FALSE));
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));
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_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 == dns_rdatatype_srv);
REQUIRE(rdata->rdclass == dns_rdataclass_in);
REQUIRE(rdata->length != 0);
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);
snprintf(buf, sizeof(buf), "%u", num);
RETERR(str_totext(buf, target));
RETERR(str_totext(" ", target));
/*
* Weight.
*/
num = uint16_fromregion(&region);
isc_region_consume(&region, 2);
snprintf(buf, sizeof(buf), "%u", num);
RETERR(str_totext(buf, target));
RETERR(str_totext(" ", target));
/*
* Port.
*/
num = uint16_fromregion(&region);
isc_region_consume(&region, 2);
snprintf(buf, sizeof(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 == dns_rdatatype_srv);
REQUIRE(rdclass == dns_rdataclass_in);
UNUSED(type);
UNUSED(rdclass);
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, options, target));
}
static inline isc_result_t
towire_in_srv(ARGS_TOWIRE) {
dns_name_t name;
dns_offsets_t offsets;
isc_region_t sr;
REQUIRE(rdata->type == dns_rdatatype_srv);
REQUIRE(rdata->length != 0);
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, offsets);
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 == dns_rdatatype_srv);
REQUIRE(rdata1->rdclass == dns_rdataclass_in);
REQUIRE(rdata1->length != 0);
REQUIRE(rdata2->length != 0);
/*
* 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 == dns_rdatatype_srv);
REQUIRE(rdclass == dns_rdataclass_in);
REQUIRE(source != NULL);
REQUIRE(srv->common.rdtype == type);
REQUIRE(srv->common.rdclass == rdclass);
UNUSED(type);
UNUSED(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 == dns_rdataclass_in);
REQUIRE(rdata->type == dns_rdatatype_srv);
REQUIRE(target != NULL);
REQUIRE(rdata->length != 0);
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 == dns_rdataclass_in);
REQUIRE(srv->common.rdtype == dns_rdatatype_srv);
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) {
char buf[sizeof("_65000._tcp")];
dns_fixedname_t fixed;
dns_name_t name;
dns_offsets_t offsets;
isc_region_t region;
isc_uint16_t port;
isc_result_t result;
REQUIRE(rdata->type == dns_rdatatype_srv);
REQUIRE(rdata->rdclass == dns_rdataclass_in);
dns_name_init(&name, offsets);
dns_rdata_toregion(rdata, &region);
isc_region_consume(&region, 4);
port = uint16_fromregion(&region);
isc_region_consume(&region, 2);
dns_name_fromregion(&name, &region);
if (dns_name_equal(&name, dns_rootname))
return (ISC_R_SUCCESS);
result = (add)(arg, &name, dns_rdatatype_a);
if (result != ISC_R_SUCCESS)
return (result);
dns_fixedname_init(&fixed);
snprintf(buf, sizeof(buf), "_%u._tcp", port);
result = dns_name_fromstring2(dns_fixedname_name(&fixed), buf, NULL,
0, NULL);
if (result != ISC_R_SUCCESS)
return (ISC_R_SUCCESS);
result = dns_name_concatenate(dns_fixedname_name(&fixed), &name,
dns_fixedname_name(&fixed), NULL);
if (result != ISC_R_SUCCESS)
return (ISC_R_SUCCESS);
return ((add)(arg, dns_fixedname_name(&fixed), dns_rdatatype_tlsa));
}
static inline isc_result_t
digest_in_srv(ARGS_DIGEST) {
isc_region_t r1, r2;
dns_name_t name;
REQUIRE(rdata->type == dns_rdatatype_srv);
REQUIRE(rdata->rdclass == dns_rdataclass_in);
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));
}
static inline isc_boolean_t
checkowner_in_srv(ARGS_CHECKOWNER) {
REQUIRE(type == dns_rdatatype_srv);
REQUIRE(rdclass == dns_rdataclass_in);
UNUSED(name);
UNUSED(type);
UNUSED(rdclass);
UNUSED(wildcard);
return (ISC_TRUE);
}
static inline isc_boolean_t
checknames_in_srv(ARGS_CHECKNAMES) {
isc_region_t region;
dns_name_t name;
REQUIRE(rdata->type == dns_rdatatype_srv);
REQUIRE(rdata->rdclass == dns_rdataclass_in);
UNUSED(owner);
dns_rdata_toregion(rdata, &region);
isc_region_consume(&region, 6);
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);
}
static inline int
casecompare_in_srv(ARGS_COMPARE) {
return (compare_in_srv(rdata1, rdata2));
}
#endif /* RDATA_IN_1_SRV_33_C */