rdata/in_1/nsap_22.c

	nsap_22.c revision 15a44745412679c30a6d022733925af70a38b715
/*
 * Copyright (C) 1999, 2000  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: nsap_22.c,v 1.24 2000/07/27 09:50:11 tale Exp $ */

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

/* RFC 1706 */

#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(origin);
    UNUSED(downcase);

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

    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(dctx);
    UNUSED(downcase);

    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);

    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);

    dns_rdata_toregion(rdata1, &r1);
    dns_rdata_toregion(rdata2, &r2);
    return (compare_region(&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) ||
        (nsap->nsap != NULL && nsap->nsap_len != 0));

    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);

    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;
    if (nsap->nsap_len != 0) {
        nsap->nsap = mem_maybedup(mctx, r.base, r.length);
        if (nsap->nsap == NULL)
            return (ISC_R_NOMEMORY);
    } else
        nsap->nsap = NULL;

    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));
}

#endif  /* RDATA_IN_1_NSAP_22_C */