hinfo_13.c

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/*
 * Copyright (C) 2004, 2007, 2009, 2014  Internet Systems Consortium, Inc. ("ISC")
 * Copyright (C) 1998-2002  Internet Software Consortium.
 *
 * Permission to use, copy, modify, and/or 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: hinfo_13.c,v 1.46 2009/12/04 22:06:37 tbox Exp $ */

/*
 * Reviewed: Wed Mar 15 16:47:10 PST 2000 by halley.
 */

#ifndef RDATA_GENERIC_HINFO_13_C
#define RDATA_GENERIC_HINFO_13_C

#define RRTYPE_HINFO_ATTRIBUTES (0)

static inline isc_result_t
fromtext_hinfo(ARGS_FROMTEXT) {
        isc_token_t token;
        int i;

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

        REQUIRE(type == 13);

        for (i = 0; i < 2; i++) {
                RETERR(isc_lex_getmastertoken(lexer, &token,
                                              isc_tokentype_qstring,
                                              ISC_FALSE));
                RETTOK(txt_fromtext(&token.value.as_textregion, target));
        }
        return (ISC_R_SUCCESS);
}

static inline isc_result_t
totext_hinfo(ARGS_TOTEXT) {
        isc_region_t region;

        UNUSED(tctx);

        REQUIRE(rdata->type == 13);
        REQUIRE(rdata->length != 0);

        dns_rdata_toregion(rdata, &region);
        RETERR(txt_totext(&region, ISC_TRUE, target));
        RETERR(str_totext(" ", target));
        return (txt_totext(&region, ISC_TRUE, target));
}

static inline isc_result_t
fromwire_hinfo(ARGS_FROMWIRE) {

        REQUIRE(type == 13);

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

        RETERR(txt_fromwire(source, target));
        return (txt_fromwire(source, target));
}

static inline isc_result_t
towire_hinfo(ARGS_TOWIRE) {

        UNUSED(cctx);

        REQUIRE(rdata->type == 13);
        REQUIRE(rdata->length != 0);

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

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

        REQUIRE(rdata1->type == rdata2->type);
        REQUIRE(rdata1->rdclass == rdata2->rdclass);
        REQUIRE(rdata1->type == 13);
        REQUIRE(rdata1->length != 0);
        REQUIRE(rdata2->length != 0);

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

static inline isc_result_t
fromstruct_hinfo(ARGS_FROMSTRUCT) {
        dns_rdata_hinfo_t *hinfo = source;

        REQUIRE(type == 13);
        REQUIRE(source != NULL);
        REQUIRE(hinfo->common.rdtype == type);
        REQUIRE(hinfo->common.rdclass == rdclass);

        UNUSED(type);
        UNUSED(rdclass);

        RETERR(uint8_tobuffer(hinfo->cpu_len, target));
        RETERR(mem_tobuffer(target, hinfo->cpu, hinfo->cpu_len));
        RETERR(uint8_tobuffer(hinfo->os_len, target));
        return (mem_tobuffer(target, hinfo->os, hinfo->os_len));
}

static inline isc_result_t
tostruct_hinfo(ARGS_TOSTRUCT) {
        dns_rdata_hinfo_t *hinfo = target;
        isc_region_t region;

        REQUIRE(rdata->type == 13);
        REQUIRE(target != NULL);
        REQUIRE(rdata->length != 0);

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

        dns_rdata_toregion(rdata, &region);
        hinfo->cpu_len = uint8_fromregion(&region);
        isc_region_consume(&region, 1);
        hinfo->cpu = mem_maybedup(mctx, region.base, hinfo->cpu_len);
        if (hinfo->cpu == NULL)
                return (ISC_R_NOMEMORY);
        isc_region_consume(&region, hinfo->cpu_len);

        hinfo->os_len = uint8_fromregion(&region);
        isc_region_consume(&region, 1);
        hinfo->os = mem_maybedup(mctx, region.base, hinfo->os_len);
        if (hinfo->os == NULL)
                goto cleanup;

        hinfo->mctx = mctx;
        return (ISC_R_SUCCESS);

 cleanup:
        if (mctx != NULL && hinfo->cpu != NULL)
                isc_mem_free(mctx, hinfo->cpu);
        return (ISC_R_NOMEMORY);
}

static inline void
freestruct_hinfo(ARGS_FREESTRUCT) {
        dns_rdata_hinfo_t *hinfo = source;

        REQUIRE(source != NULL);

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

        if (hinfo->cpu != NULL)
                isc_mem_free(hinfo->mctx, hinfo->cpu);
        if (hinfo->os != NULL)
                isc_mem_free(hinfo->mctx, hinfo->os);
        hinfo->mctx = NULL;
}

static inline isc_result_t
additionaldata_hinfo(ARGS_ADDLDATA) {
        REQUIRE(rdata->type == 13);

        UNUSED(add);
        UNUSED(arg);
        UNUSED(rdata);

        return (ISC_R_SUCCESS);
}

static inline isc_result_t
digest_hinfo(ARGS_DIGEST) {
        isc_region_t r;

        REQUIRE(rdata->type == 13);

        dns_rdata_toregion(rdata, &r);

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

static inline isc_boolean_t
checkowner_hinfo(ARGS_CHECKOWNER) {

        REQUIRE(type == 13);

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

        return (ISC_TRUE);
}

static inline isc_boolean_t
checknames_hinfo(ARGS_CHECKNAMES) {

        REQUIRE(rdata->type == 13);

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

        return (ISC_TRUE);
}

static inline int
casecompare_hinfo(ARGS_COMPARE) {
        return (compare_hinfo(rdata1, rdata2));
}
#endif  /* RDATA_GENERIC_HINFO_13_C */

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