rdata/generic/null_10.c

/*
 * Copyright (C) 1998-2002, 2004, 2007, 2009, 2011, 2012, 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/.
 */

/* $Id$ */

/* Reviewed: Thu Mar 16 13:57:50 PST 2000 by explorer */

#ifndef RDATA_GENERIC_NULL_10_C
#define RDATA_GENERIC_NULL_10_C

#define RRTYPE_NULL_ATTRIBUTES (0)

static inline isc_result_t
fromtext_null(ARGS_FROMTEXT) {
    REQUIRE(type == dns_rdatatype_null);

    UNUSED(rdclass);
    UNUSED(type);
    UNUSED(lexer);
    UNUSED(origin);
    UNUSED(options);
    UNUSED(target);
    UNUSED(callbacks);

    return (DNS_R_SYNTAX);
}

static inline isc_result_t
totext_null(ARGS_TOTEXT) {
    REQUIRE(rdata->type == dns_rdatatype_null);

    return (unknown_totext(rdata, tctx, target));
}

static inline isc_result_t
fromwire_null(ARGS_FROMWIRE) {
    isc_region_t sr;

    REQUIRE(type == dns_rdatatype_null);

    UNUSED(type);
    UNUSED(rdclass);
    UNUSED(dctx);
    UNUSED(options);

    isc_buffer_activeregion(source, &sr);
    isc_buffer_forward(source, sr.length);
    return (mem_tobuffer(target, sr.base, sr.length));
}

static inline isc_result_t
towire_null(ARGS_TOWIRE) {
    REQUIRE(rdata->type == dns_rdatatype_null);

    UNUSED(cctx);

    return (mem_tobuffer(target, rdata->data, rdata->length));
}

static inline int
compare_null(ARGS_COMPARE) {
    isc_region_t r1;
    isc_region_t r2;

    REQUIRE(rdata1->type == rdata2->type);
    REQUIRE(rdata1->rdclass == rdata2->rdclass);
    REQUIRE(rdata1->type == dns_rdatatype_null);

    dns_rdata_toregion(rdata1, &r1);
    dns_rdata_toregion(rdata2, &r2);
    return (isc_region_compare(&r1, &r2));
}

static inline isc_result_t
fromstruct_null(ARGS_FROMSTRUCT) {
    dns_rdata_null_t *null = source;

    REQUIRE(type == dns_rdatatype_null);
    REQUIRE(source != NULL);
    REQUIRE(null->common.rdtype == type);
    REQUIRE(null->common.rdclass == rdclass);
    REQUIRE(null->data != NULL || null->length == 0);

    UNUSED(type);
    UNUSED(rdclass);

    return (mem_tobuffer(target, null->data, null->length));
}

static inline isc_result_t
tostruct_null(ARGS_TOSTRUCT) {
    dns_rdata_null_t *null = target;
    isc_region_t r;

    REQUIRE(rdata->type == dns_rdatatype_null);
    REQUIRE(target != NULL);

    null->common.rdclass = rdata->rdclass;
    null->common.rdtype = rdata->type;
    ISC_LINK_INIT(&null->common, link);

    dns_rdata_toregion(rdata, &r);
    null->length = r.length;
    null->data = mem_maybedup(mctx, r.base, r.length);
    if (null->data == NULL)
        return (ISC_R_NOMEMORY);

    null->mctx = mctx;
    return (ISC_R_SUCCESS);
}

static inline void
freestruct_null(ARGS_FREESTRUCT) {
    dns_rdata_null_t *null = source;

    REQUIRE(source != NULL);
    REQUIRE(null->common.rdtype == dns_rdatatype_null);

    if (null->mctx == NULL)
        return;

    if (null->data != NULL)
        isc_mem_free(null->mctx, null->data);
    null->mctx = NULL;
}

static inline isc_result_t
additionaldata_null(ARGS_ADDLDATA) {
    UNUSED(rdata);
    UNUSED(add);
    UNUSED(arg);

    REQUIRE(rdata->type == dns_rdatatype_null);

    return (ISC_R_SUCCESS);
}

static inline isc_result_t
digest_null(ARGS_DIGEST) {
    isc_region_t r;

    REQUIRE(rdata->type == dns_rdatatype_null);

    dns_rdata_toregion(rdata, &r);

    return ((digest)(arg, &r));
}

static inline isc_boolean_t
checkowner_null(ARGS_CHECKOWNER) {

    REQUIRE(type == dns_rdatatype_null);

    UNUSED(name);
    UNUSED(type);
    UNUSED(rdclass);
    UNUSED(wildcard);

    return (ISC_TRUE);
}

static inline isc_boolean_t
checknames_null(ARGS_CHECKNAMES) {

    REQUIRE(rdata->type == dns_rdatatype_null);

    UNUSED(rdata);
    UNUSED(owner);
    UNUSED(bad);

    return (ISC_TRUE);
}

static inline int
casecompare_null(ARGS_COMPARE) {
    return (compare_null(rdata1, rdata2));
}

#endif  /* RDATA_GENERIC_NULL_10_C */