rdata/in_1/aaaa_28.c

	aaaa_28.c revision b8ea456f924807e4fa076f6f5285d7774fb0ffc7
/*
 * Copyright (C) 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: aaaa_28.c,v 1.5 1999/02/09 07:52:31 marka Exp $ */

 /* RFC 1886 */

#ifndef RDATA_IN_1_AAAA_28_H
#define RDATA_IN_1_AAAA_28_H

#include <string.h>

#include <sys/types.h>
#include <sys/socket.h>

#include <netinet/in.h>
#include <arpa/inet.h>

#include <isc/inet.h>

static dns_result_t
fromtext_in_aaaa(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;
    unsigned char addr[16];
    isc_region_t region;

    REQUIRE(type == 28);
    REQUIRE(class == 1);

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

    RETERR(gettoken(lexer, &token, isc_tokentype_string, ISC_FALSE));

    if (isc_inet_pton(AF_INET6, token.value.as_pointer, addr) != 1)
        return (DNS_R_BADAAAA);
    isc_buffer_available(target, &region);
    if (region.length < 16)
        return (DNS_R_NOSPACE);
    memcpy(region.base, addr, 16);
    isc_buffer_add(target, 16);
    return (DNS_R_SUCCESS);
}

static dns_result_t
totext_in_aaaa(dns_rdata_t *rdata, dns_name_t *origin, isc_buffer_t *target) {
    isc_region_t region;

    REQUIRE(rdata->type == 28);
    REQUIRE(rdata->class == 1);
    REQUIRE(rdata->length == 16);

    origin = origin;    /* unused */

    isc_buffer_available(target, &region);
    if (isc_inet_ntop(AF_INET6, rdata->data,
              (char *)region.base, region.length) == NULL)
        return (DNS_R_NOSPACE);

    isc_buffer_add(target, strlen((char *)region.base));
    return (DNS_R_SUCCESS);
}

static dns_result_t
fromwire_in_aaaa(dns_rdataclass_t class, dns_rdatatype_t type,
          isc_buffer_t *source, dns_decompress_t *dctx,
          isc_boolean_t downcase, isc_buffer_t *target) {
    isc_region_t sregion;
    isc_region_t tregion;

    REQUIRE(type == 28);
    REQUIRE(class == 1);

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


    isc_buffer_active(source, &sregion);
    isc_buffer_available(target, &tregion);
    if (sregion.length < 16)
        return (DNS_R_UNEXPECTEDEND);
    if (tregion.length < 16)
        return (DNS_R_NOSPACE);

    memcpy(tregion.base, sregion.base, 16);
    isc_buffer_forward(source, 16);
    isc_buffer_add(target, 16);
    return (DNS_R_SUCCESS);
}

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

    REQUIRE(rdata->type == 28);
    REQUIRE(rdata->class == 1);

    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, 16);
    return (DNS_R_SUCCESS);
}

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

    REQUIRE(rdata1->type == rdata2->type);
    REQUIRE(rdata1->class == rdata2->class);
    REQUIRE(rdata1->type == 28);
    REQUIRE(rdata1->class == 1);

    result = memcmp(rdata1->data, rdata2->data, 16);
    if (result != 0)
        result = (result < 0) ? -1 : 1;

    return (result);
}

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

    REQUIRE(type == 1);
    REQUIRE(class == 1);

    source = source;
    target = target;

    return (DNS_R_NOTIMPLEMENTED);
}

static dns_result_t
tostruct_in_aaaa(dns_rdata_t *rdata, void *target) {

    REQUIRE(rdata->type == 28);
    REQUIRE(rdata->class == 1);

    target = target;

    return (DNS_R_NOTIMPLEMENTED);
}
#endif  /* RDATA_IN_1_AAAA_28_H */