rdata/generic/cert_37.c

	cert_37.c revision 3ddd92da6651bc72aa79a04195ad389d86fd1a66
/*
 * 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: cert_37.c,v 1.15 1999/09/17 09:22:40 gson Exp $ */

 /* draft-ietf-dnssec-certs-04.txt */

#ifndef RDATA_GENERIC_CERT_37_C
#define RDATA_GENERIC_CERT_37_C

static inline dns_result_t
fromtext_cert(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;
    long n;
    dns_secalg_t secalg;
    char *e;
    dns_cert_t cert;

    REQUIRE(type == 37);

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

    /* cert type */
    RETERR(gettoken(lexer, &token, isc_tokentype_string, ISC_FALSE));
    n = strtol(token.value.as_pointer, &e, 10);
    RETERR(dns_cert_fromtext(&cert, &token.value.as_textregion));
    RETERR(uint16_tobuffer(cert, target));

    /* key tag */
    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));

    /* algorithm */
    RETERR(gettoken(lexer, &token, isc_tokentype_string, ISC_FALSE));
    RETERR(dns_secalg_fromtext(&secalg, &token.value.as_textregion));
    RETERR(mem_tobuffer(target, &secalg, 1));

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

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

    REQUIRE(rdata->type == 37);

    tctx = tctx;    /*unused*/

    dns_rdata_toregion(rdata, &sr);

    /* type */
    n = uint16_fromregion(&sr);
    isc_region_consume(&sr, 2);
    RETERR(dns_cert_totext(n, target));
    RETERR(str_totext(" ", target));

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

    /* algorithm */
    RETERR(dns_secalg_totext(sr.base[0], target));
    isc_region_consume(&sr, 1);

    /* cert */
    if ((tctx->flags & DNS_STYLEFLAG_MULTILINE) != 0)
        RETERR(str_totext(" (", target));
    RETERR(str_totext(tctx->linebreak, target));
    RETERR(isc_base64_totext(&sr, tctx->width - 2,
                 tctx->linebreak, target));
    if ((tctx->flags & DNS_STYLEFLAG_MULTILINE) != 0)
        RETERR(str_totext(" )", target));
    return (DNS_R_SUCCESS);
}

static inline dns_result_t
fromwire_cert(dns_rdataclass_t rdclass, 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 == 37);

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

    isc_buffer_active(source, &sr);
    if (sr.length < 5)
        return (DNS_R_UNEXPECTEDEND);

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

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

    REQUIRE(rdata->type == 37);

    cctx = cctx;    /*unused*/

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

static inline int
compare_cert(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 == 37);

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

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

    REQUIRE(type == 37);

    rdclass = rdclass;  /*unused*/

    source = source;
    target = target;

    return (DNS_R_NOTIMPLEMENTED);
}

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

    REQUIRE(rdata->type == 37);
    REQUIRE(target != NULL && target == NULL);

    target = target;
    mctx = mctx;

    return (DNS_R_NOTIMPLEMENTED);
}

static inline void
freestruct_cert(void *target) {
    REQUIRE(target != NULL && target != NULL);
    REQUIRE(ISC_FALSE); /* XXX */
}

static inline dns_result_t
additionaldata_cert(dns_rdata_t *rdata, dns_additionaldatafunc_t add,
            void *arg)
{
    REQUIRE(rdata->type == 37);

    (void)add;
    (void)arg;

    return (DNS_R_SUCCESS);
}

static inline dns_result_t
digest_cert(dns_rdata_t *rdata, dns_digestfunc_t digest, void *arg) {
    isc_region_t r;

    REQUIRE(rdata->type == 37);

    dns_rdata_toregion(rdata, &r);

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

#endif  /* RDATA_GENERIC_CERT_37_C */