rdata/any_255/tsig_250.c

	tsig_250.c revision dafcb997e390efa4423883dafd100c975c4095d6
/*
 * Copyright (C) 2004  Internet Systems Consortium, Inc. ("ISC")
 * Copyright (C) 1999-2003  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 ISC DISCLAIMS ALL WARRANTIES WITH
 * REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY
 * AND FITNESS.  IN NO EVENT SHALL ISC 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: tsig_250.c,v 1.59 2004/03/05 05:10:07 marka Exp $ */

/* Reviewed: Thu Mar 16 13:39:43 PST 2000 by gson */

#ifndef RDATA_ANY_255_TSIG_250_C
#define RDATA_ANY_255_TSIG_250_C

#define RRTYPE_TSIG_ATTRIBUTES \
    (DNS_RDATATYPEATTR_META | DNS_RDATATYPEATTR_NOTQUESTION)

static inline isc_result_t
fromtext_any_tsig(ARGS_FROMTEXT) {
    isc_token_t token;
    dns_name_t name;
    isc_uint64_t sigtime;
    isc_buffer_t buffer;
    dns_rcode_t rcode;
    long i;
    char *e;

    REQUIRE(type == 250);
    REQUIRE(rdclass == 255);

    UNUSED(type);
    UNUSED(rdclass);
    UNUSED(callbacks);

    /*
     * Algorithm Name.
     */
    RETERR(isc_lex_getmastertoken(lexer, &token, isc_tokentype_string,
                      ISC_FALSE));
    dns_name_init(&name, NULL);
    buffer_fromregion(&buffer, &token.value.as_region);
    origin = (origin != NULL) ? origin : dns_rootname;
    RETTOK(dns_name_fromtext(&name, &buffer, origin, options, target));

    /*
     * Time Signed: 48 bits.
     */
    RETERR(isc_lex_getmastertoken(lexer, &token, isc_tokentype_string,
                      ISC_FALSE));
    sigtime = isc_string_touint64(DNS_AS_STR(token), &e, 10);
    if (*e != 0)
        RETTOK(DNS_R_SYNTAX);
    if ((sigtime >> 48) != 0)
        RETTOK(ISC_R_RANGE);
    RETERR(uint16_tobuffer((isc_uint16_t)(sigtime >> 32), target));
    RETERR(uint32_tobuffer((isc_uint32_t)(sigtime & 0xffffffffU), target));

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

    /*
     * Signature Size.
     */
    RETERR(isc_lex_getmastertoken(lexer, &token, isc_tokentype_number,
                      ISC_FALSE));
    if (token.value.as_ulong > 0xffffU)
        RETTOK(ISC_R_RANGE);
    RETERR(uint16_tobuffer(token.value.as_ulong, target));

    /*
     * Signature.
     */
    RETERR(isc_base64_tobuffer(lexer, target, (int)token.value.as_ulong));

    /*
     * Original ID.
     */
    RETERR(isc_lex_getmastertoken(lexer, &token, isc_tokentype_number,
                      ISC_FALSE));
    if (token.value.as_ulong > 0xffffU)
        RETTOK(ISC_R_RANGE);
    RETERR(uint16_tobuffer(token.value.as_ulong, target));

    /*
     * Error.
     */
    RETERR(isc_lex_getmastertoken(lexer, &token, isc_tokentype_string,
                      ISC_FALSE));
    if (dns_tsigrcode_fromtext(&rcode, &token.value.as_textregion)
                != ISC_R_SUCCESS)
    {
        i = strtol(DNS_AS_STR(token), &e, 10);
        if (*e != 0)
            RETTOK(DNS_R_UNKNOWN);
        if (i < 0 || i > 0xffff)
            RETTOK(ISC_R_RANGE);
        rcode = (dns_rcode_t)i;
    }
    RETERR(uint16_tobuffer(rcode, target));

    /*
     * Other Len.
     */
    RETERR(isc_lex_getmastertoken(lexer, &token, isc_tokentype_number,
                      ISC_FALSE));
    if (token.value.as_ulong > 0xffffU)
        RETTOK(ISC_R_RANGE);
    RETERR(uint16_tobuffer(token.value.as_ulong, target));

    /*
     * Other Data.
     */
    return (isc_base64_tobuffer(lexer, target, (int)token.value.as_ulong));
}

static inline isc_result_t
totext_any_tsig(ARGS_TOTEXT) {
    isc_region_t sr;
    isc_region_t sigr;
    char buf[sizeof("281474976710655 ")];
    char *bufp;
    dns_name_t name;
    dns_name_t prefix;
    isc_boolean_t sub;
    isc_uint64_t sigtime;
    unsigned short n;

    REQUIRE(rdata->type == 250);
    REQUIRE(rdata->rdclass == 255);
    REQUIRE(rdata->length != 0);

    dns_rdata_toregion(rdata, &sr);
    /*
     * Algorithm Name.
     */
    dns_name_init(&name, NULL);
    dns_name_init(&prefix, NULL);
    dns_name_fromregion(&name, &sr);
    sub = name_prefix(&name, tctx->origin, &prefix);
    RETERR(dns_name_totext(&prefix, sub, target));
    RETERR(str_totext(" ", target));
    isc_region_consume(&sr, name_length(&name));

    /*
     * Time Signed.
     */
    sigtime = ((isc_uint64_t)sr.base[0] << 40) |
          ((isc_uint64_t)sr.base[1] << 32) |
          (sr.base[2] << 24) | (sr.base[3] << 16) |
          (sr.base[4] << 8) | sr.base[5];
    isc_region_consume(&sr, 6);
    bufp = &buf[sizeof(buf) - 1];
    *bufp-- = 0;
    *bufp-- = ' ';
    do {
        *bufp-- = decdigits[sigtime % 10];
        sigtime /= 10;
    } while (sigtime != 0);
    bufp++;
    RETERR(str_totext(bufp, target));

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

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

    /*
     * Signature.
     */
    REQUIRE(n <= sr.length);
    sigr = sr;
    sigr.length = n;
    if ((tctx->flags & DNS_STYLEFLAG_MULTILINE) != 0)
        RETERR(str_totext(" (", target));
    RETERR(str_totext(tctx->linebreak, target));
    RETERR(isc_base64_totext(&sigr, tctx->width - 2,
                 tctx->linebreak, target));
    if ((tctx->flags & DNS_STYLEFLAG_MULTILINE) != 0)
        RETERR(str_totext(" ) ", target));
    else
        RETERR(str_totext(" ", target));
    isc_region_consume(&sr, n);

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

    /*
     * Error.
     */
    n = uint16_fromregion(&sr);
    isc_region_consume(&sr, 2);
    if (dns_tsigrcode_totext((dns_rcode_t)n, target) == ISC_R_SUCCESS)
        RETERR(str_totext(" ", target));
    else {
        sprintf(buf, "%u ", n);
        RETERR(str_totext(buf, target));
    }

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

    /*
     * Other.
     */
    return (isc_base64_totext(&sr, 60, " ", target));
}

static inline isc_result_t
fromwire_any_tsig(ARGS_FROMWIRE) {
    isc_region_t sr;
    dns_name_t name;
    unsigned long n;

    REQUIRE(type == 250);
    REQUIRE(rdclass == 255);

    UNUSED(type);
    UNUSED(rdclass);

    dns_decompress_setmethods(dctx, DNS_COMPRESS_NONE);

    /*
     * Algorithm Name.
     */
    dns_name_init(&name, NULL);
    RETERR(dns_name_fromwire(&name, source, dctx, options, target));

    isc_buffer_activeregion(source, &sr);
    /*
     * Time Signed + Fudge.
     */
    if (sr.length < 8)
        return (ISC_R_UNEXPECTEDEND);
    RETERR(mem_tobuffer(target, sr.base, 8));
    isc_region_consume(&sr, 8);
    isc_buffer_forward(source, 8);

    /*
     * Signature Length + Signature.
     */
    if (sr.length < 2)
        return (ISC_R_UNEXPECTEDEND);
    n = uint16_fromregion(&sr);
    if (sr.length < n + 2)
        return (ISC_R_UNEXPECTEDEND);
    RETERR(mem_tobuffer(target, sr.base, n + 2));
    isc_region_consume(&sr, n + 2);
    isc_buffer_forward(source, n + 2);

    /*
     * Original ID + Error.
     */
    if (sr.length < 4)
        return (ISC_R_UNEXPECTEDEND);
    RETERR(mem_tobuffer(target, sr.base,  4));
    isc_region_consume(&sr, 4);
    isc_buffer_forward(source, 4);

    /*
     * Other Length + Other.
     */
    if (sr.length < 2)
        return (ISC_R_UNEXPECTEDEND);
    n = uint16_fromregion(&sr);
    if (sr.length < n + 2)
        return (ISC_R_UNEXPECTEDEND);
    isc_buffer_forward(source, n + 2);
    return (mem_tobuffer(target, sr.base, n + 2));
}

static inline isc_result_t
towire_any_tsig(ARGS_TOWIRE) {
    isc_region_t sr;
    dns_name_t name;
    dns_offsets_t offsets;

    REQUIRE(rdata->type == 250);
    REQUIRE(rdata->rdclass == 255);
    REQUIRE(rdata->length != 0);

    dns_compress_setmethods(cctx, DNS_COMPRESS_NONE);
    dns_rdata_toregion(rdata, &sr);
    dns_name_init(&name, offsets);
    dns_name_fromregion(&name, &sr);
    RETERR(dns_name_towire(&name, cctx, target));
    isc_region_consume(&sr, name_length(&name));
    return (mem_tobuffer(target, sr.base, sr.length));
}

static inline int
compare_any_tsig(ARGS_COMPARE) {
    isc_region_t r1;
    isc_region_t r2;
    dns_name_t name1;
    dns_name_t name2;
    int order;

    REQUIRE(rdata1->type == rdata2->type);
    REQUIRE(rdata1->rdclass == rdata2->rdclass);
    REQUIRE(rdata1->type == 250);
    REQUIRE(rdata1->rdclass == 255);
    REQUIRE(rdata1->length != 0);
    REQUIRE(rdata2->length != 0);

    dns_rdata_toregion(rdata1, &r1);
    dns_rdata_toregion(rdata2, &r2);
    dns_name_init(&name1, NULL);
    dns_name_init(&name2, NULL);
    dns_name_fromregion(&name1, &r1);
    dns_name_fromregion(&name2, &r2);
    order = dns_name_rdatacompare(&name1, &name2);
    if (order != 0)
        return (order);
    isc_region_consume(&r1, name_length(&name1));
    isc_region_consume(&r2, name_length(&name2));
    return (isc_region_compare(&r1, &r2));
}

static inline isc_result_t
fromstruct_any_tsig(ARGS_FROMSTRUCT) {
    dns_rdata_any_tsig_t *tsig = source;
    isc_region_t tr;

    REQUIRE(type == 250);
    REQUIRE(rdclass == 255);
    REQUIRE(source != NULL);
    REQUIRE(tsig->common.rdclass == rdclass);
    REQUIRE(tsig->common.rdtype == type);

    UNUSED(type);
    UNUSED(rdclass);

    /*
     * Algorithm Name.
     */
    RETERR(name_tobuffer(&tsig->algorithm, target));

    isc_buffer_availableregion(target, &tr);
    if (tr.length < 6 + 2 + 2)
        return (ISC_R_NOSPACE);

    /*
     * Time Signed: 48 bits.
     */
    RETERR(uint16_tobuffer((isc_uint16_t)(tsig->timesigned >> 32),
                   target));
    RETERR(uint32_tobuffer((isc_uint32_t)(tsig->timesigned & 0xffffffffU),
                   target));

    /*
     * Fudge.
     */
    RETERR(uint16_tobuffer(tsig->fudge, target));

    /*
     * Signature Size.
     */
    RETERR(uint16_tobuffer(tsig->siglen, target));

    /*
     * Signature.
     */
    RETERR(mem_tobuffer(target, tsig->signature, tsig->siglen));

    isc_buffer_availableregion(target, &tr);
    if (tr.length < 2 + 2 + 2)
        return (ISC_R_NOSPACE);

    /*
     * Original ID.
     */
    RETERR(uint16_tobuffer(tsig->originalid, target));

    /*
     * Error.
     */
    RETERR(uint16_tobuffer(tsig->error, target));

    /*
     * Other Len.
     */
    RETERR(uint16_tobuffer(tsig->otherlen, target));

    /*
     * Other Data.
     */
    return (mem_tobuffer(target, tsig->other, tsig->otherlen));
}

static inline isc_result_t
tostruct_any_tsig(ARGS_TOSTRUCT) {
    dns_rdata_any_tsig_t *tsig;
    dns_name_t alg;
    isc_region_t sr;

    REQUIRE(rdata->type == 250);
    REQUIRE(rdata->rdclass == 255);
    REQUIRE(rdata->length != 0);

    tsig = (dns_rdata_any_tsig_t *) target;
    tsig->common.rdclass = rdata->rdclass;
    tsig->common.rdtype = rdata->type;
    ISC_LINK_INIT(&tsig->common, link);

    dns_rdata_toregion(rdata, &sr);

    /*
     * Algorithm Name.
     */
    dns_name_init(&alg, NULL);
    dns_name_fromregion(&alg, &sr);
    dns_name_init(&tsig->algorithm, NULL);
    RETERR(name_duporclone(&alg, mctx, &tsig->algorithm));

    isc_region_consume(&sr, name_length(&tsig->algorithm));

    /*
     * Time Signed.
     */
    INSIST(sr.length >= 6);
    tsig->timesigned = ((isc_uint64_t)sr.base[0] << 40) |
               ((isc_uint64_t)sr.base[1] << 32) |
               (sr.base[2] << 24) | (sr.base[3] << 16) |
               (sr.base[4] << 8) | sr.base[5];
    isc_region_consume(&sr, 6);

    /*
     * Fudge.
     */
    tsig->fudge = uint16_fromregion(&sr);
    isc_region_consume(&sr, 2);

    /*
     * Signature Size.
     */
    tsig->siglen = uint16_fromregion(&sr);
    isc_region_consume(&sr, 2);

    /*
     * Signature.
     */
    INSIST(sr.length >= tsig->siglen);
    tsig->signature = mem_maybedup(mctx, sr.base, tsig->siglen);
    if (tsig->signature == NULL)
        goto cleanup;
    isc_region_consume(&sr, tsig->siglen);

    /*
     * Original ID.
     */
    tsig->originalid = uint16_fromregion(&sr);
    isc_region_consume(&sr, 2);

    /*
     * Error.
     */
    tsig->error = uint16_fromregion(&sr);
    isc_region_consume(&sr, 2);

    /*
     * Other Size.
     */
    tsig->otherlen = uint16_fromregion(&sr);
    isc_region_consume(&sr, 2);

    /*
     * Other.
     */
    INSIST(sr.length == tsig->otherlen);
    tsig->other = mem_maybedup(mctx, sr.base, tsig->otherlen);
    if (tsig->other == NULL)
        goto cleanup;

    tsig->mctx = mctx;
    return (ISC_R_SUCCESS);

 cleanup:
    if (mctx != NULL)
        dns_name_free(&tsig->algorithm, tsig->mctx);
    if (mctx != NULL && tsig->signature != NULL)
        isc_mem_free(mctx, tsig->signature);
    return (ISC_R_NOMEMORY);
}

static inline void
freestruct_any_tsig(ARGS_FREESTRUCT) {
    dns_rdata_any_tsig_t *tsig = (dns_rdata_any_tsig_t *) source;

    REQUIRE(source != NULL);
    REQUIRE(tsig->common.rdclass == 255);
    REQUIRE(tsig->common.rdtype == 250);

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

    dns_name_free(&tsig->algorithm, tsig->mctx);
    if (tsig->signature != NULL)
        isc_mem_free(tsig->mctx, tsig->signature);
    if (tsig->other != NULL)
        isc_mem_free(tsig->mctx, tsig->other);
    tsig->mctx = NULL;
}

static inline isc_result_t
additionaldata_any_tsig(ARGS_ADDLDATA) {
    REQUIRE(rdata->type == 250);
    REQUIRE(rdata->rdclass == 255);

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

    return (ISC_R_SUCCESS);
}

static inline isc_result_t
digest_any_tsig(ARGS_DIGEST) {

    REQUIRE(rdata->type == 250);
    REQUIRE(rdata->rdclass == 255);

    UNUSED(rdata);
    UNUSED(digest);
    UNUSED(arg);

    return (ISC_R_NOTIMPLEMENTED);
}

static inline isc_boolean_t
checkowner_any_tsig(ARGS_CHECKOWNER) {

    REQUIRE(type == 250);
    REQUIRE(rdclass == 255);

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

    return (ISC_TRUE);
}

static inline isc_boolean_t
checknames_any_tsig(ARGS_CHECKNAMES) {

    REQUIRE(rdata->type == 250);
    REQUIRE(rdata->rdclass == 250);

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

    return (ISC_TRUE);
}

#endif  /* RDATA_ANY_255_TSIG_250_C */