rdata/generic/txt_16.h

	txt_16.h revision 5d51e67c3b4f35c1be742574aacc1d88fe6ed444
/*
 * Copyright (C) 1998 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.
 */

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

    class = class;      /*unused*/
    origin = origin;    /*unused*/
    downcase = downcase;    /*unused*/

    if (isc_lex_gettoken(lexer, 0, &token) != ISC_R_SUCCESS)
        return (DNS_R_UNKNOWN);
    while (token.type == isc_tokentype_string) {
        result = txt_fromtext(&token.value.as_textregion, target);
        if (result != DNS_R_SUCCESS)
            return (result);
        if (isc_lex_gettoken(lexer, ISC_LEXOPT_EOL | ISC_LEXOPT_EOF,
                     &token) != ISC_R_SUCCESS)
            return (DNS_R_UNKNOWN);
    }
    /* 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_name_t *origin, isc_buffer_t *target) {
    isc_region_t region;
    dns_result_t result;

    origin = origin;    /*unused*/

    dns_rdata_toregion(rdata, &region);

    while (region.length) {
        result = txt_totext(&region, target);
        if (result != DNS_R_SUCCESS)
            return (result);
        if (region.length) {
            result = str_totext(" ", target);
            if (result != DNS_R_SUCCESS)
                return (result);
        }
    }

    return (DNS_R_SUCCESS);
}

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

    dctx = dctx;
    class = class;
    downcase = downcase;

    INSIST(type == 16);

    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) {

    cctx = cctx;

    if (target->length < rdata->length)
        return (DNS_R_NOSPACE);

    memcpy(target->base, rdata->data, rdata->length);
    /*XXX*/
    return (DNS_R_SUCCESS);
}

static int
compare_txt(dns_rdata_t *rdata1, dns_rdata_t *rdata2) {
    int l;
    int result;

    l = (rdata1->length < rdata2->length) ? rdata1->length : rdata2->length;
    result = memcmp(rdata1->data, rdata2->data, l);

    if (result != 0)
        result = (result < 0) ? -1 : 1;
    else if (rdata1->length != rdata2->length)
            result = (rdata1->length < rdata2->length) ? -1 : 1;

    return (result);
}

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

    class = class;
    type = type;
    source = source;
    target = target;

    return (DNS_R_NOTIMPLEMENTED);
}

static dns_result_t
tostruct_txt(dns_rdata_t *rdata, void *target) {
    rdata = rdata;
    target = target;

    return (DNS_R_NOTIMPLEMENTED);
}