rdata/generic/key_25.c

	key_25.c revision 5fc7ba3e1ac5d72239e9971e0f469dd5796738f9
/*
 * 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: key_25.c,v 1.7 1999/06/08 10:35:11 gson Exp $ */

 /* RFC 2065 */

#ifndef RDATA_GENERIC_KEY_25_C
#define RDATA_GENERIC_KEY_25_C

static dns_result_t
fromtext_key(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 c;
    unsigned int flags;

    REQUIRE(type == 25);

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

    RETERR(gettoken(lexer, &token, isc_tokentype_number, ISC_FALSE));
    if (token.value.as_ulong > 0xffff)
        return (DNS_R_RANGE);
    RETERR(uint16_tobuffer(token.value.as_ulong, target));
    flags = token.value.as_ulong;

    RETERR(gettoken(lexer, &token, isc_tokentype_number, ISC_FALSE));
    if (token.value.as_ulong > 0xff)
        return (DNS_R_RANGE);
    c = token.value.as_ulong;
    RETERR(mem_tobuffer(target, &c, 1));

    RETERR(gettoken(lexer, &token, isc_tokentype_number, ISC_FALSE));
    if (token.value.as_ulong > 0xff)
        return (DNS_R_RANGE);
    c = token.value.as_ulong;
    RETERR(mem_tobuffer(target, &c, 1));

    /* No Key? */
    if ((flags & 0xc000) == 0xc000)
        return (DNS_R_SUCCESS);

    return (isc_base64_tobuffer(lexer, target, -1));
}

static dns_result_t
totext_key(dns_rdata_t *rdata, dns_rdata_textctx_t *tctx,
       isc_buffer_t *target)
{
    isc_region_t sr;
    char buf[sizeof "64000"];
    unsigned int flags;

    REQUIRE(rdata->type == 25);

    tctx = tctx;    /*unused*/

    dns_rdata_toregion(rdata, &sr);

    /* flags */
    flags = uint16_fromregion(&sr);
    isc_region_consume(&sr, 2);
    sprintf(buf, "%u", flags);
    RETERR(str_totext(buf, target));
    RETERR(str_totext(" ", target));

    /* protocol */
    sprintf(buf, "%u", sr.base[0]);
    isc_region_consume(&sr, 1);
    RETERR(str_totext(buf, target));
    RETERR(str_totext(" ", target));

    /* algorithm */
    sprintf(buf, "%u", sr.base[0]);
    isc_region_consume(&sr, 1);
    RETERR(str_totext(buf, target));

    /* No Key? */
    if ((flags & 0xc000) == 0xc00)
        return (DNS_R_SUCCESS);

    /* key */
    RETERR(str_totext(" (", target));
    RETERR(str_totext(tctx->linebreak, target));
    RETERR(isc_base64_totext(&sr, tctx->width - 2,
                 tctx->linebreak, target));
    RETERR(str_totext(" )", target));

    return DNS_R_SUCCESS;
}

static dns_result_t
fromwire_key(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 sr;

    REQUIRE(type == 25);

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

    isc_buffer_active(source, &sr);
    if (sr.length < 4)
        return (DNS_R_UNEXPECTEDEND);

    isc_buffer_forward(source, sr.length);
    return (mem_tobuffer(target, sr.base, sr.length));
}

static dns_result_t
towire_key(dns_rdata_t *rdata, dns_compress_t *cctx, isc_buffer_t *target) {
    isc_region_t sr;

    REQUIRE(rdata->type == 25);

    cctx = cctx;    /*unused*/

    dns_rdata_toregion(rdata, &sr);
    return (mem_tobuffer(target, sr.base, sr.length));
}

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

    REQUIRE(rdata1->type == rdata2->type);
    REQUIRE(rdata1->class == rdata2->class);
    REQUIRE(rdata1->type == 25);

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

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

    REQUIRE(type == 25);

    class = class;  /*unused*/

    source = source;
    target = target;

    return (DNS_R_NOTIMPLEMENTED);
}

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

    REQUIRE(rdata->type == 25);

    target = target;
    mctx = mctx;

    return (DNS_R_NOTIMPLEMENTED);
}

static void
freestruct_key(void *source) {
    REQUIRE(source != NULL);
    REQUIRE(ISC_FALSE); /*XXX*/
}
#endif  /* RDATA_GENERIC_KEY_25_C */