rdata/generic/x25_19.c

	x25_19.c revision 499b34cea04a46823d003d4c0520c8b03e8513cb
/*
 * Copyright (C) 1999-2001  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: x25_19.c,v 1.27 2001/01/09 21:54:56 bwelling Exp $ */

/* Reviewed: Thu Mar 16 16:15:57 PST 2000 by bwelling */

/* RFC 1183 */

#ifndef RDATA_GENERIC_X25_19_C
#define RDATA_GENERIC_X25_19_C

#define RRTYPE_X25_ATTRIBUTES (0)

static inline isc_result_t
fromtext_x25(ARGS_FROMTEXT) {
    isc_token_t token;
    unsigned int i;

    UNUSED(rdclass);
    UNUSED(origin);
    UNUSED(downcase);

    REQUIRE(type == 19);

    RETERR(isc_lex_getmastertoken(lexer, &token, isc_tokentype_qstring,
                      ISC_FALSE));
    if (token.value.as_textregion.length < 4)
        return (DNS_R_SYNTAX);
    for (i = 0; i < token.value.as_textregion.length; i++)
        if (!isdigit(token.value.as_textregion.base[i] & 0xff))
            return (ISC_R_RANGE);
    return (txt_fromtext(&token.value.as_textregion, target));
}

static inline isc_result_t
totext_x25(ARGS_TOTEXT) {
    isc_region_t region;

    UNUSED(tctx);

    REQUIRE(rdata->type == 19);
    REQUIRE(rdata->length != 0);

    dns_rdata_toregion(rdata, &region);
    return (txt_totext(&region, target));
}

static inline isc_result_t
fromwire_x25(ARGS_FROMWIRE) {
    isc_region_t sr;

    UNUSED(dctx);
    UNUSED(rdclass);
    UNUSED(downcase);

    REQUIRE(type == 19);

    isc_buffer_activeregion(source, &sr);
    if (sr.length < 5)
        return (DNS_R_FORMERR);
    return (txt_fromwire(source, target));
}

static inline isc_result_t
towire_x25(ARGS_TOWIRE) {
    UNUSED(cctx);

    REQUIRE(rdata->type == 19);
    REQUIRE(rdata->length != 0);

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

static inline int
compare_x25(ARGS_COMPARE) {
    isc_region_t r1;
    isc_region_t r2;

    REQUIRE(rdata1->type == rdata2->type);
    REQUIRE(rdata1->rdclass == rdata2->rdclass);
    REQUIRE(rdata1->type == 19);
    REQUIRE(rdata1->length != 0);
    REQUIRE(rdata2->length != 0);

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

static inline isc_result_t
fromstruct_x25(ARGS_FROMSTRUCT) {
    dns_rdata_x25_t *x25 = source;
    isc_uint8_t i;

    REQUIRE(type == 19);
    REQUIRE(source != NULL);
    REQUIRE(x25->common.rdtype == type);
    REQUIRE(x25->common.rdclass == rdclass);
    REQUIRE((x25->x25 == NULL && x25->x25_len == 0) ||
        (x25->x25 != NULL && x25->x25_len != 0));

    UNUSED(rdclass);

    for (i = 0; i < x25->x25_len; i++)
        if (!isdigit(x25->x25[i] & 0xff))
            return (ISC_R_RANGE);

    RETERR(uint8_tobuffer(x25->x25_len, target));
    return (mem_tobuffer(target, x25->x25, x25->x25_len));
}

static inline isc_result_t
tostruct_x25(ARGS_TOSTRUCT) {
    dns_rdata_x25_t *x25 = target;
    isc_region_t r;

    REQUIRE(rdata->type == 19);
    REQUIRE(target != NULL);
    REQUIRE(rdata->length != 0);

    x25->common.rdclass = rdata->rdclass;
    x25->common.rdtype = rdata->type;
    ISC_LINK_INIT(&x25->common, link);

    dns_rdata_toregion(rdata, &r);
    x25->x25_len = uint8_fromregion(&r);
    isc_region_consume(&r, 1);
    if (x25->x25_len != 0) {
        x25->x25 = mem_maybedup(mctx, r.base, x25->x25_len);
        if (x25->x25 == NULL)
            return (ISC_R_NOMEMORY);
    } else
        x25->x25 = NULL;

    x25->mctx = mctx;
    return (ISC_R_SUCCESS);
}

static inline void
freestruct_x25(ARGS_FREESTRUCT) {
    dns_rdata_x25_t *x25 = source;
    REQUIRE(source != NULL);
    REQUIRE(x25->common.rdtype == 19);

    if (x25->mctx == NULL)
        return;

    if (x25->x25 != NULL)
        isc_mem_free(x25->mctx, x25->x25);
    x25->mctx = NULL;
}

static inline isc_result_t
additionaldata_x25(ARGS_ADDLDATA) {
    REQUIRE(rdata->type == 19);

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

    return (ISC_R_SUCCESS);
}

static inline isc_result_t
digest_x25(ARGS_DIGEST) {
    isc_region_t r;

    REQUIRE(rdata->type == 19);

    dns_rdata_toregion(rdata, &r);

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

#endif  /* RDATA_GENERIC_X25_19_C */