rdata/generic/keydata_65533.c

	keydata_65533.c revision bfde61d5194a534d800f3b90008d1f52261922c5
/*
 * Copyright (C) 2009, 2011-2013, 2015, 2016  Internet Systems Consortium, Inc. ("ISC")
 *
 * This Source Code Form is subject to the terms of the Mozilla Public
 * License, v. 2.0. If a copy of the MPL was not distributed with this
 * file, You can obtain one at http://mozilla.org/MPL/2.0/.
 */

#ifndef GENERIC_KEYDATA_65533_C
#define GENERIC_KEYDATA_65533_C 1

#include <isc/time.h>
#include <isc/stdtime.h>

#include <dst/dst.h>

#define RRTYPE_KEYDATA_ATTRIBUTES (0)

static inline isc_result_t
fromtext_keydata(ARGS_FROMTEXT) {
    isc_result_t result;
    isc_token_t token;
    dns_secalg_t alg;
    dns_secproto_t proto;
    dns_keyflags_t flags;
    isc_uint32_t refresh, addhd, removehd;

    REQUIRE(type == dns_rdatatype_keydata);

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

    /* refresh timer */
    RETERR(isc_lex_getmastertoken(lexer, &token, isc_tokentype_string,
                      ISC_FALSE));
    RETTOK(dns_time32_fromtext(DNS_AS_STR(token), &refresh));
    RETERR(uint32_tobuffer(refresh, target));

    /* add hold-down */
    RETERR(isc_lex_getmastertoken(lexer, &token, isc_tokentype_string,
                      ISC_FALSE));
    RETTOK(dns_time32_fromtext(DNS_AS_STR(token), &addhd));
    RETERR(uint32_tobuffer(addhd, target));

    /* remove hold-down */
    RETERR(isc_lex_getmastertoken(lexer, &token, isc_tokentype_string,
                      ISC_FALSE));
    RETTOK(dns_time32_fromtext(DNS_AS_STR(token), &removehd));
    RETERR(uint32_tobuffer(removehd, target));

    /* flags */
    RETERR(isc_lex_getmastertoken(lexer, &token, isc_tokentype_string,
                      ISC_FALSE));
    RETTOK(dns_keyflags_fromtext(&flags, &token.value.as_textregion));
    RETERR(uint16_tobuffer(flags, target));

    /* protocol */
    RETERR(isc_lex_getmastertoken(lexer, &token, isc_tokentype_string,
                      ISC_FALSE));
    RETTOK(dns_secproto_fromtext(&proto, &token.value.as_textregion));
    RETERR(mem_tobuffer(target, &proto, 1));

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

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

    result = isc_base64_tobuffer(lexer, target, -1);
    if (result != ISC_R_SUCCESS)
        return (result);

    /* Ensure there's at least enough data to compute a key ID for MD5 */
    if (alg == DST_ALG_RSAMD5 && isc_buffer_usedlength(target) < 19)
        return (ISC_R_UNEXPECTEDEND);

    return (ISC_R_SUCCESS);
}

static inline isc_result_t
totext_keydata(ARGS_TOTEXT) {
    isc_region_t sr;
    char buf[sizeof("64000")];
    unsigned int flags;
    unsigned char algorithm;
    unsigned long refresh, add, deltime;
    char algbuf[DNS_NAME_FORMATSIZE];
    const char *keyinfo;

    REQUIRE(rdata->type == dns_rdatatype_keydata);

    if ((tctx->flags & DNS_STYLEFLAG_KEYDATA) == 0 || rdata->length < 16)
        return (unknown_totext(rdata, tctx, target));

    dns_rdata_toregion(rdata, &sr);

    /* refresh timer */
    refresh = uint32_fromregion(&sr);
    isc_region_consume(&sr, 4);
    RETERR(dns_time32_totext(refresh, target));
    RETERR(str_totext(" ", target));

    /* add hold-down */
    add = uint32_fromregion(&sr);
    isc_region_consume(&sr, 4);
    RETERR(dns_time32_totext(add, target));
    RETERR(str_totext(" ", target));

    /* remove hold-down */
    deltime = uint32_fromregion(&sr);
    isc_region_consume(&sr, 4);
    RETERR(dns_time32_totext(deltime, target));
    RETERR(str_totext(" ", target));

    /* flags */
    flags = uint16_fromregion(&sr);
    isc_region_consume(&sr, 2);
    sprintf(buf, "%u", flags);
    RETERR(str_totext(buf, target));
    RETERR(str_totext(" ", target));
    if ((flags & DNS_KEYFLAG_KSK) != 0) {
        if (flags & DNS_KEYFLAG_REVOKE)
            keyinfo = "revoked KSK";
        else
            keyinfo = "KSK";
    } else
        keyinfo = "ZSK";

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

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

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

    /* key */
    if ((tctx->flags & DNS_STYLEFLAG_MULTILINE) != 0)
        RETERR(str_totext(" (", target));
    RETERR(str_totext(tctx->linebreak, target));
    if (tctx->width == 0)   /* No splitting */
        RETERR(isc_base64_totext(&sr, 60, "", target));
    else
        RETERR(isc_base64_totext(&sr, tctx->width - 2,
                     tctx->linebreak, target));

    if ((tctx->flags & DNS_STYLEFLAG_RRCOMMENT) != 0)
        RETERR(str_totext(tctx->linebreak, target));
    else if ((tctx->flags & DNS_STYLEFLAG_MULTILINE) != 0)
        RETERR(str_totext(" ", target));

    if ((tctx->flags & DNS_STYLEFLAG_MULTILINE) != 0)
        RETERR(str_totext(")", target));

    if ((tctx->flags & DNS_STYLEFLAG_RRCOMMENT) != 0) {
        isc_region_t tmpr;
        char rbuf[ISC_FORMATHTTPTIMESTAMP_SIZE];
        char abuf[ISC_FORMATHTTPTIMESTAMP_SIZE];
        char dbuf[ISC_FORMATHTTPTIMESTAMP_SIZE];
        isc_time_t t;

        RETERR(str_totext(" ; ", target));
        RETERR(str_totext(keyinfo, target));
        dns_secalg_format((dns_secalg_t) algorithm, algbuf,
                  sizeof(algbuf));
        RETERR(str_totext("; alg = ", target));
        RETERR(str_totext(algbuf, target));
        RETERR(str_totext("; key id = ", target));
        dns_rdata_toregion(rdata, &tmpr);
        /* Skip over refresh, addhd, and removehd */
        isc_region_consume(&tmpr, 12);
        sprintf(buf, "%u", dst_region_computeid(&tmpr, algorithm));
        RETERR(str_totext(buf, target));

        if ((tctx->flags & DNS_STYLEFLAG_MULTILINE) != 0) {
            isc_stdtime_t now;

            isc_stdtime_get(&now);

            RETERR(str_totext(tctx->linebreak, target));
            RETERR(str_totext("; next refresh: ", target));
            isc_time_set(&t, refresh, 0);
            isc_time_formathttptimestamp(&t, rbuf, sizeof(rbuf));
            RETERR(str_totext(rbuf, target));

            if (add == 0U) {
                RETERR(str_totext(tctx->linebreak, target));
                RETERR(str_totext("; no trust", target));
            } else {
                RETERR(str_totext(tctx->linebreak, target));
                if (add < now) {
                    RETERR(str_totext("; trusted since: ",
                              target));
                } else {
                    RETERR(str_totext("; trust pending: ",
                              target));
                }
                isc_time_set(&t, add, 0);
                isc_time_formathttptimestamp(&t, abuf,
                                 sizeof(abuf));
                RETERR(str_totext(abuf, target));
            }

            if (deltime != 0U) {
                RETERR(str_totext(tctx->linebreak, target));
                RETERR(str_totext("; removal pending: ",
                          target));
                isc_time_set(&t, deltime, 0);
                isc_time_formathttptimestamp(&t, dbuf,
                                 sizeof(dbuf));
                RETERR(str_totext(dbuf, target));
            }
        }

    }
    return (ISC_R_SUCCESS);
}

static inline isc_result_t
fromwire_keydata(ARGS_FROMWIRE) {
    isc_region_t sr;

    REQUIRE(type == dns_rdatatype_keydata);

    UNUSED(type);
    UNUSED(rdclass);
    UNUSED(dctx);
    UNUSED(options);

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

static inline isc_result_t
towire_keydata(ARGS_TOWIRE) {
    isc_region_t sr;

    REQUIRE(rdata->type == dns_rdatatype_keydata);

    UNUSED(cctx);

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

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

    REQUIRE(rdata1->type == rdata2->type);
    REQUIRE(rdata1->rdclass == rdata2->rdclass);
    REQUIRE(rdata1->type == dns_rdatatype_keydata);

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

static inline isc_result_t
fromstruct_keydata(ARGS_FROMSTRUCT) {
    dns_rdata_keydata_t *keydata = source;

    REQUIRE(type == dns_rdatatype_keydata);
    REQUIRE(source != NULL);
    REQUIRE(keydata->common.rdtype == type);
    REQUIRE(keydata->common.rdclass == rdclass);

    UNUSED(type);
    UNUSED(rdclass);

    /* Refresh timer */
    RETERR(uint32_tobuffer(keydata->refresh, target));

    /* Add hold-down */
    RETERR(uint32_tobuffer(keydata->addhd, target));

    /* Remove hold-down */
    RETERR(uint32_tobuffer(keydata->removehd, target));

    /* Flags */
    RETERR(uint16_tobuffer(keydata->flags, target));

    /* Protocol */
    RETERR(uint8_tobuffer(keydata->protocol, target));

    /* Algorithm */
    RETERR(uint8_tobuffer(keydata->algorithm, target));

    /* Data */
    return (mem_tobuffer(target, keydata->data, keydata->datalen));
}

static inline isc_result_t
tostruct_keydata(ARGS_TOSTRUCT) {
    dns_rdata_keydata_t *keydata = target;
    isc_region_t sr;

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

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

    dns_rdata_toregion(rdata, &sr);

    /* Refresh timer */
    if (sr.length < 4)
        return (ISC_R_UNEXPECTEDEND);
    keydata->refresh = uint32_fromregion(&sr);
    isc_region_consume(&sr, 4);

    /* Add hold-down */
    if (sr.length < 4)
        return (ISC_R_UNEXPECTEDEND);
    keydata->addhd = uint32_fromregion(&sr);
    isc_region_consume(&sr, 4);

    /* Remove hold-down */
    if (sr.length < 4)
        return (ISC_R_UNEXPECTEDEND);
    keydata->removehd = uint32_fromregion(&sr);
    isc_region_consume(&sr, 4);

    /* Flags */
    if (sr.length < 2)
        return (ISC_R_UNEXPECTEDEND);
    keydata->flags = uint16_fromregion(&sr);
    isc_region_consume(&sr, 2);

    /* Protocol */
    if (sr.length < 1)
        return (ISC_R_UNEXPECTEDEND);
    keydata->protocol = uint8_fromregion(&sr);
    isc_region_consume(&sr, 1);

    /* Algorithm */
    if (sr.length < 1)
        return (ISC_R_UNEXPECTEDEND);
    keydata->algorithm = uint8_fromregion(&sr);
    isc_region_consume(&sr, 1);

    /* Data */
    keydata->datalen = sr.length;
    keydata->data = mem_maybedup(mctx, sr.base, keydata->datalen);
    if (keydata->data == NULL)
        return (ISC_R_NOMEMORY);

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

static inline void
freestruct_keydata(ARGS_FREESTRUCT) {
    dns_rdata_keydata_t *keydata = (dns_rdata_keydata_t *) source;

    REQUIRE(source != NULL);
    REQUIRE(keydata->common.rdtype == dns_rdatatype_keydata);

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

    if (keydata->data != NULL)
        isc_mem_free(keydata->mctx, keydata->data);
    keydata->mctx = NULL;
}

static inline isc_result_t
additionaldata_keydata(ARGS_ADDLDATA) {
    REQUIRE(rdata->type == dns_rdatatype_keydata);

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

    return (ISC_R_SUCCESS);
}

static inline isc_result_t
digest_keydata(ARGS_DIGEST) {
    isc_region_t r;

    REQUIRE(rdata->type == dns_rdatatype_keydata);

    dns_rdata_toregion(rdata, &r);

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

static inline isc_boolean_t
checkowner_keydata(ARGS_CHECKOWNER) {

    REQUIRE(type == dns_rdatatype_keydata);

    UNUSED(name);
    UNUSED(type);
    UNUSED(rdclass);
    UNUSED(wildcard);

    return (ISC_TRUE);
}

static inline isc_boolean_t
checknames_keydata(ARGS_CHECKNAMES) {

    REQUIRE(rdata->type == dns_rdatatype_keydata);

    UNUSED(rdata);
    UNUSED(owner);
    UNUSED(bad);

    return (ISC_TRUE);
}

static inline int
casecompare_keydata(ARGS_COMPARE) {
    return (compare_keydata(rdata1, rdata2));
}

#endif /* GENERIC_KEYDATA_65533_C */