nsap_22.c

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/*
 * Copyright (C) 2004, 2005, 2007, 2009, 2013  Internet Systems Consortium, Inc. ("ISC")
 * Copyright (C) 1999-2002  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: nsap_22.c,v 1.44 2009/12/04 22:06:37 tbox Exp $ */

/* Reviewed: Fri Mar 17 10:41:07 PST 2000 by gson */

/* RFC1706 */

#ifndef RDATA_IN_1_NSAP_22_C
#define RDATA_IN_1_NSAP_22_C

#define RRTYPE_NSAP_ATTRIBUTES (0)

static inline isc_result_t
fromtext_in_nsap(ARGS_FROMTEXT) {
        isc_token_t token;
        isc_textregion_t *sr;
        int n;
        int digits;
        unsigned char c = 0;

        REQUIRE(type == 22);
        REQUIRE(rdclass == 1);

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

        /* 0x<hex.string.with.periods> */
        RETERR(isc_lex_getmastertoken(lexer, &token, isc_tokentype_string,
                                      ISC_FALSE));
        sr = &token.value.as_textregion;
        if (sr->length < 2)
                RETTOK(ISC_R_UNEXPECTEDEND);
        if (sr->base[0] != '0' || (sr->base[1] != 'x' && sr->base[1] != 'X'))
                RETTOK(DNS_R_SYNTAX);
        isc_textregion_consume(sr, 2);
        digits = 0;
        while (sr->length > 0) {
                if (sr->base[0] == '.') {
                        isc_textregion_consume(sr, 1);
                        continue;
                }
                if ((n = hexvalue(sr->base[0])) == -1)
                        RETTOK(DNS_R_SYNTAX);
                c <<= 4;
                c += n;
                if (++digits == 2) {
                        RETERR(mem_tobuffer(target, &c, 1));
                        digits = 0;
                }
                isc_textregion_consume(sr, 1);
        }
        if (digits)
                RETTOK(ISC_R_UNEXPECTEDEND);
        return (ISC_R_SUCCESS);
}

static inline isc_result_t
totext_in_nsap(ARGS_TOTEXT) {
        isc_region_t region;
        char buf[sizeof("xx")];

        REQUIRE(rdata->type == 22);
        REQUIRE(rdata->rdclass == 1);
        REQUIRE(rdata->length != 0);

        UNUSED(tctx);

        dns_rdata_toregion(rdata, &region);
        RETERR(str_totext("0x", target));
        while (region.length != 0) {
                sprintf(buf, "%02x", region.base[0]);
                isc_region_consume(&region, 1);
                RETERR(str_totext(buf, target));
        }
        return (ISC_R_SUCCESS);
}

static inline isc_result_t
fromwire_in_nsap(ARGS_FROMWIRE) {
        isc_region_t region;

        REQUIRE(type == 22);
        REQUIRE(rdclass == 1);

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

        isc_buffer_activeregion(source, &region);
        if (region.length < 1)
                return (ISC_R_UNEXPECTEDEND);

        RETERR(mem_tobuffer(target, region.base, region.length));
        isc_buffer_forward(source, region.length);
        return (ISC_R_SUCCESS);
}

static inline isc_result_t
towire_in_nsap(ARGS_TOWIRE) {
        REQUIRE(rdata->type == 22);
        REQUIRE(rdata->rdclass == 1);
        REQUIRE(rdata->length != 0);

        UNUSED(cctx);

        return (mem_tobuffer(target, rdata->data, rdata->length));
}

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

        REQUIRE(rdata1->type == rdata2->type);
        REQUIRE(rdata1->rdclass == rdata2->rdclass);
        REQUIRE(rdata1->type == 22);
        REQUIRE(rdata1->rdclass == 1);
        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_in_nsap(ARGS_FROMSTRUCT) {
        dns_rdata_in_nsap_t *nsap = source;

        REQUIRE(type == 22);
        REQUIRE(rdclass == 1);
        REQUIRE(source != NULL);
        REQUIRE(nsap->common.rdtype == type);
        REQUIRE(nsap->common.rdclass == rdclass);
        REQUIRE(nsap->nsap != NULL || nsap->nsap_len == 0);

        UNUSED(type);
        UNUSED(rdclass);

        return (mem_tobuffer(target, nsap->nsap, nsap->nsap_len));
}

static inline isc_result_t
tostruct_in_nsap(ARGS_TOSTRUCT) {
        dns_rdata_in_nsap_t *nsap = target;
        isc_region_t r;

        REQUIRE(rdata->type == 22);
        REQUIRE(rdata->rdclass == 1);
        REQUIRE(target != NULL);
        REQUIRE(rdata->length != 0);

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

        dns_rdata_toregion(rdata, &r);
        nsap->nsap_len = r.length;
        nsap->nsap = mem_maybedup(mctx, r.base, r.length);
        if (nsap->nsap == NULL)
                return (ISC_R_NOMEMORY);

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

static inline void
freestruct_in_nsap(ARGS_FREESTRUCT) {
        dns_rdata_in_nsap_t *nsap = source;

        REQUIRE(source != NULL);
        REQUIRE(nsap->common.rdclass == 1);
        REQUIRE(nsap->common.rdtype == 22);

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

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

static inline isc_result_t
additionaldata_in_nsap(ARGS_ADDLDATA) {
        REQUIRE(rdata->type == 22);
        REQUIRE(rdata->rdclass == 1);

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

        return (ISC_R_SUCCESS);
}

static inline isc_result_t
digest_in_nsap(ARGS_DIGEST) {
        isc_region_t r;

        REQUIRE(rdata->type == 22);
        REQUIRE(rdata->rdclass == 1);

        dns_rdata_toregion(rdata, &r);

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

static inline isc_boolean_t
checkowner_in_nsap(ARGS_CHECKOWNER) {

        REQUIRE(type == 22);
        REQUIRE(rdclass == 1);

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

        return (ISC_TRUE);
}

static inline isc_boolean_t
checknames_in_nsap(ARGS_CHECKNAMES) {

        REQUIRE(rdata->type == 22);
        REQUIRE(rdata->rdclass == 1);

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

        return (ISC_TRUE);
}

static inline int
casecompare_in_nsap(ARGS_COMPARE) {
        return (compare_in_nsap(rdata1, rdata2));
}

#endif  /* RDATA_IN_1_NSAP_22_C */

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