rdata/generic/isdn_20.c

	isdn_20.c revision 15a44745412679c30a6d022733925af70a38b715
/*
 * 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: isdn_20.c,v 1.21 2000/07/27 09:49:02 tale Exp $ */

/* Reviewed: Wed Mar 15 16:53:11 PST 2000 by bwelling */

/* RFC 1183 */

#ifndef RDATA_GENERIC_ISDN_20_C
#define RDATA_GENERIC_ISDN_20_C

#define RRTYPE_ISDN_ATTRIBUTES (0)

static inline isc_result_t
fromtext_isdn(ARGS_FROMTEXT) {
    isc_token_t token;

    UNUSED(rdclass);
    UNUSED(origin);
    UNUSED(downcase);

    REQUIRE(type == 20);

    /* ISDN-address */
    RETERR(gettoken(lexer, &token, isc_tokentype_qstring, ISC_FALSE));
    RETERR(txt_fromtext(&token.value.as_textregion, target));

    /* sa: optional */
    RETERR(gettoken(lexer, &token, isc_tokentype_qstring, ISC_TRUE));
    if (token.type != isc_tokentype_string &&
        token.type != isc_tokentype_qstring) {
        isc_lex_ungettoken(lexer, &token);
        return (ISC_R_SUCCESS);
    }
    return (txt_fromtext(&token.value.as_textregion, target));
}

static inline isc_result_t
totext_isdn(ARGS_TOTEXT) {
    isc_region_t region;

    UNUSED(tctx);

    REQUIRE(rdata->type == 20);

    dns_rdata_toregion(rdata, &region);
    RETERR(txt_totext(&region, target));
    if (region.length == 0)
        return (ISC_R_SUCCESS);
    RETERR(str_totext(" ", target));
    return (txt_totext(&region, target));
}

static inline isc_result_t
fromwire_isdn(ARGS_FROMWIRE) {
    UNUSED(dctx);
    UNUSED(rdclass);
    UNUSED(downcase);

    REQUIRE(type == 20);

    RETERR(txt_fromwire(source, target));
    if (buffer_empty(source))
        return (ISC_R_SUCCESS);
    return (txt_fromwire(source, target));
}

static inline isc_result_t
towire_isdn(ARGS_TOWIRE) {
    UNUSED(cctx);

    REQUIRE(rdata->type == 20);

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

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

    REQUIRE(rdata1->type == rdata2->type);
    REQUIRE(rdata1->rdclass == rdata2->rdclass);
    REQUIRE(rdata1->type == 20);

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

static inline isc_result_t
fromstruct_isdn(ARGS_FROMSTRUCT) {
    dns_rdata_isdn_t *isdn = source;

    REQUIRE(type == 20);
    REQUIRE(source != NULL);
    REQUIRE(isdn->common.rdtype == type);
    REQUIRE(isdn->common.rdclass == rdclass);

    RETERR(uint8_tobuffer(isdn->isdn_len, target));
    RETERR(mem_tobuffer(target, isdn->isdn, isdn->isdn_len));
    RETERR(uint8_tobuffer(isdn->subaddress_len, target));
    return (mem_tobuffer(target, isdn->subaddress, isdn->subaddress_len));
}

static inline isc_result_t
tostruct_isdn(ARGS_TOSTRUCT) {
    dns_rdata_isdn_t *isdn = target;
    isc_region_t r;

    REQUIRE(rdata->type == 20);
    REQUIRE(target != NULL);

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

    dns_rdata_toregion(rdata, &r);

    isdn->isdn_len = uint8_fromregion(&r);
    isc_region_consume(&r, 1);
    if (isdn->isdn_len > 0) {
        isdn->isdn = mem_maybedup(mctx, r.base, isdn->isdn_len);
        if (isdn->isdn == NULL)
            return (ISC_R_NOMEMORY);
        isc_region_consume(&r, isdn->isdn_len);
    } else
        isdn->isdn = NULL;

    isdn->subaddress_len = uint8_fromregion(&r);
    isc_region_consume(&r, 1);
    if (isdn->subaddress_len > 0) {
        isdn->subaddress = mem_maybedup(mctx, r.base,
                        isdn->subaddress_len);
        if (isdn->subaddress == NULL)
            goto cleanup;
    } else
        isdn->subaddress = NULL;

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

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

static inline void
freestruct_isdn(ARGS_FREESTRUCT) {
    dns_rdata_isdn_t *isdn = source;

    REQUIRE(source != NULL);

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

    if (isdn->isdn != NULL)
        isc_mem_free(isdn->mctx, isdn->isdn);
    if (isdn->subaddress != NULL)
        isc_mem_free(isdn->mctx, isdn->subaddress);
    isdn->mctx = NULL;
}

static inline isc_result_t
additionaldata_isdn(ARGS_ADDLDATA) {
    REQUIRE(rdata->type == 20);

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

    return (ISC_R_SUCCESS);
}

static inline isc_result_t
digest_isdn(ARGS_DIGEST) {
    isc_region_t r;

    REQUIRE(rdata->type == 20);

    dns_rdata_toregion(rdata, &r);

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

#endif  /* RDATA_GENERIC_ISDN_20_C */