tsig_250.c

Go to the documentation of this file.

/*
 * Copyright (C) 2004, 2005, 2007, 2009, 2011, 2012  Internet Systems Consortium, Inc. ("ISC")
 * Copyright (C) 1999-2003  Internet Software Consortium.
 *
 * Permission to use, copy, modify, and/or 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.
 */

/* $Id$ */

/* 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) |
                  ((isc_uint64_t)sr.base[2] << 24) |
                  ((isc_uint64_t)sr.base[3] << 16) |
                  ((isc_uint64_t)sr.base[4] << 8) |
                  (isc_uint64_t)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));
        if (tctx->width == 0)   /* No splitting */
                RETERR(isc_base64_totext(&sigr, 60, "", target));
        else
                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);
        RETERR(dns_tsigrcode_totext((dns_rcode_t)n, target));

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

        /*
         * Other.
         */
        if (tctx->width == 0)   /* No splitting */
                return (isc_base64_totext(&sr, 60, "", target));
        else
                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) |
                           ((isc_uint64_t)sr.base[2] << 24) |
                           ((isc_uint64_t)sr.base[3] << 16) |
                           ((isc_uint64_t)sr.base[4] << 8) |
                           (isc_uint64_t)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);
}

static inline int
casecompare_any_tsig(ARGS_COMPARE) {
        return (compare_any_tsig(rdata1, rdata2));
}

#endif  /* RDATA_ANY_255_TSIG_250_C */

---