rdata/generic/cert_37.c

	cert_37.c revision 90e303b114e56db5809fdd19805243457fa43cd9
/*
 * Copyright (C) 1999-2001  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 1.42 2002/01/05 07:05:07 ogud Exp $ */

/* Reviewed: Wed Mar 15 21:14:32 EST 2000 by tale */

/* RFC 2538 */

#ifndef RDATA_GENERIC_CERT_37_C
#define RDATA_GENERIC_CERT_37_C

#define RRTYPE_CERT_ATTRIBUTES (0)

static inline isc_result_t
fromtext_cert(ARGS_FROMTEXT) {
    isc_token_t token;
    dns_secalg_t secalg;
    dns_cert_t cert;

    REQUIRE(type == 37);

    UNUSED(type);
    UNUSED(rdclass);
    UNUSED(origin);
    UNUSED(downcase);
    UNUSED(callbacks);

    /*
     * Cert type.
     */
    RETERR(isc_lex_getmastertoken(lexer, &token, isc_tokentype_string,
                      ISC_FALSE));
    RETTOK(dns_cert_fromtext(&cert, &token.value.as_textregion));
    RETERR(uint16_tobuffer(cert, target));

    /*
     * Key tag.
     */
    RETERR(isc_lex_getmastertoken(lexer, &token, isc_tokentype_number,
                      ISC_FALSE));
    if (token.value.as_ulong > 0xffff)
        RETTOK(ISC_R_RANGE);
    RETERR(uint16_tobuffer(token.value.as_ulong, target));

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

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

static inline isc_result_t
totext_cert(ARGS_TOTEXT) {
    isc_region_t sr;
    char buf[sizeof("64000 ")];
    unsigned int n;

    REQUIRE(rdata->type == 37);
    REQUIRE(rdata->length != 0);

    UNUSED(tctx);

    dns_rdata_toregion(rdata, &sr);

    /*
     * Type.
     */
    n = uint16_fromregion(&sr);
    isc_region_consume(&sr, 2);
    RETERR(dns_cert_totext((dns_cert_t)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 (ISC_R_SUCCESS);
}

static inline isc_result_t
fromwire_cert(ARGS_FROMWIRE) {
    isc_region_t sr;

    REQUIRE(type == 37);

    UNUSED(type);
    UNUSED(rdclass);
    UNUSED(dctx);
    UNUSED(downcase);

    isc_buffer_activeregion(source, &sr);
    if (sr.length < 5)
        return (ISC_R_UNEXPECTEDEND);

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

static inline isc_result_t
towire_cert(ARGS_TOWIRE) {
    isc_region_t sr;

    REQUIRE(rdata->type == 37);
    REQUIRE(rdata->length != 0);

    UNUSED(cctx);

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

static inline int
compare_cert(ARGS_COMPARE) {
    isc_region_t r1;
    isc_region_t r2;

    REQUIRE(rdata1->type == rdata2->type);
    REQUIRE(rdata1->rdclass == rdata2->rdclass);
    REQUIRE(rdata1->type == 37);
    REQUIRE(rdata1->length != 0);
    REQUIRE(rdata2->length != 0);

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

static inline isc_result_t
fromstruct_cert(ARGS_FROMSTRUCT) {
    dns_rdata_cert_t *cert = source;

    REQUIRE(type == 37);
    REQUIRE(source != NULL);
    REQUIRE(cert->common.rdtype == type);
    REQUIRE(cert->common.rdclass == rdclass);

    UNUSED(type);
    UNUSED(rdclass);

    RETERR(uint16_tobuffer(cert->type, target));
    RETERR(uint16_tobuffer(cert->key_tag, target));
    RETERR(uint8_tobuffer(cert->algorithm, target));

    return (mem_tobuffer(target, cert->certificate, cert->length));
}

static inline isc_result_t
tostruct_cert(ARGS_TOSTRUCT) {
    dns_rdata_cert_t *cert = target;
    isc_region_t region;

    REQUIRE(rdata->type == 37);
    REQUIRE(target != NULL);
    REQUIRE(rdata->length != 0);

    cert->common.rdclass = rdata->rdclass;
    cert->common.rdtype = rdata->type;
    ISC_LINK_INIT(&cert->common, link);

    dns_rdata_toregion(rdata, &region);

    cert->type = uint16_fromregion(&region);
    isc_region_consume(&region, 2);
    cert->key_tag = uint16_fromregion(&region);
    isc_region_consume(&region, 2);
    cert->algorithm = uint8_fromregion(&region);
    isc_region_consume(&region, 1);
    cert->length = region.length;

    cert->certificate = mem_maybedup(mctx, region.base, region.length);
    if (cert->certificate == NULL)
        return (ISC_R_NOMEMORY);

    cert->mctx = mctx;
    return (ISC_R_SUCCESS);
}

static inline void
freestruct_cert(ARGS_FREESTRUCT) {
    dns_rdata_cert_t *cert = source;

    REQUIRE(cert != NULL);
    REQUIRE(cert->common.rdtype == 37);

    if (cert->mctx == NULL)
        return;

    if (cert->certificate != NULL)
        isc_mem_free(cert->mctx, cert->certificate);
    cert->mctx = NULL;
}

static inline isc_result_t
additionaldata_cert(ARGS_ADDLDATA) {
    REQUIRE(rdata->type == 37);

    UNUSED(rdata);
    UNUSED(add);
    UNUSED(arg);

    return (ISC_R_SUCCESS);
}

static inline isc_result_t
digest_cert(ARGS_DIGEST) {
    isc_region_t r;

    REQUIRE(rdata->type == 37);

    dns_rdata_toregion(rdata, &r);

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

#endif  /* RDATA_GENERIC_CERT_37_C */