rdata/generic/txt_16.c

	txt_16.c revision d981ca645597116d227a48bf37cc5edc061c854d
/*
 * Copyright (C) 1998-1999 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: txt_16.c,v 1.13 1999/08/02 22:18:01 halley Exp $ */

#ifndef RDATA_GENERIC_TXT_16_C
#define RDATA_GENERIC_TXT_16_C

static dns_result_t
fromtext_txt(dns_rdataclass_t rdclass, dns_rdatatype_t type,
         isc_lex_t *lexer, dns_name_t *origin,
         isc_boolean_t downcase, isc_buffer_t *target)
{
    isc_token_t token;

    REQUIRE(type == 16);

    rdclass = rdclass;      /*unused*/
    origin = origin;    /*unused*/
    downcase = downcase;    /*unused*/

    while (1) {
        RETERR(gettoken(lexer, &token, isc_tokentype_qstring,
                ISC_TRUE));
        if (token.type != isc_tokentype_qstring &&
            token.type != isc_tokentype_string)
            break;
        RETERR(txt_fromtext(&token.value.as_textregion, target));
    }
    /* Let upper layer handle eol/eof. */
    isc_lex_ungettoken(lexer, &token);
    return (DNS_R_SUCCESS);
}

static dns_result_t
totext_txt(dns_rdata_t *rdata, dns_rdata_textctx_t *tctx,
       isc_buffer_t *target)
{
    isc_region_t region;

    REQUIRE(rdata->type == 16);

    tctx = tctx;    /*unused*/

    dns_rdata_toregion(rdata, &region);

    while (region.length) {
        RETERR(txt_totext(&region, target));
        if (region.length)
            RETERR(str_totext(" ", target));
    }

    return (DNS_R_SUCCESS);
}

static dns_result_t
fromwire_txt(dns_rdataclass_t rdclass, dns_rdatatype_t type,
         isc_buffer_t *source, dns_decompress_t *dctx,
         isc_boolean_t downcase, isc_buffer_t *target)
{
    dns_result_t result;

    REQUIRE(type == 16);

    dctx = dctx;        /*unused*/
    rdclass = rdclass;      /*unused*/
    downcase = downcase;    /*unused*/

    while (!buffer_empty(source)) {
        result = txt_fromwire(source, target);
        if (result != DNS_R_SUCCESS)
            return (result);
    }
    return (DNS_R_SUCCESS);
}

static dns_result_t
towire_txt(dns_rdata_t *rdata, dns_compress_t *cctx, isc_buffer_t *target) {
    isc_region_t region;

    REQUIRE(rdata->type == 16);

    cctx = cctx;    /*unused*/

    isc_buffer_available(target, &region);
    if (region.length < rdata->length)
        return (DNS_R_NOSPACE);

    memcpy(region.base, rdata->data, rdata->length);
    isc_buffer_add(target, rdata->length);
    return (DNS_R_SUCCESS);
}

static int
compare_txt(dns_rdata_t *rdata1, dns_rdata_t *rdata2) {
    isc_region_t r1;
    isc_region_t r2;

    REQUIRE(rdata1->type == rdata2->type);
    REQUIRE(rdata1->rdclass == rdata2->rdclass);
    REQUIRE(rdata1->type == 16);

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

static dns_result_t
fromstruct_txt(dns_rdataclass_t rdclass, dns_rdatatype_t type, void *source,
           isc_buffer_t *target)
{

    REQUIRE(type == 16);

    rdclass = rdclass;  /*unused*/

    source = source;
    target = target;

    return (DNS_R_NOTIMPLEMENTED);
}

static dns_result_t
tostruct_txt(dns_rdata_t *rdata, void *target, isc_mem_t *mctx) {

    REQUIRE(rdata->type == 16);

    target = target;
    mctx = mctx;

    return (DNS_R_NOTIMPLEMENTED);
}

static void
freestruct_txt(void *source) {
    REQUIRE(source != NULL);
    REQUIRE(ISC_FALSE);
}

static dns_result_t
additionaldata_txt(dns_rdata_t *rdata, dns_additionaldatafunc_t add,
           void *arg)
{
    REQUIRE(rdata->type == 16);

    (void)add;
    (void)arg;

    return (DNS_R_SUCCESS);
}

#endif  /* RDATA_GENERIC_TXT_16_C */