x25_19.c

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/*
 * Copyright (C) 2004, 2005, 2007, 2009, 2014  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: x25_19.c,v 1.41 2009/12/04 22:06:37 tbox Exp $ */

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

/* RFC1183 */

#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;

        REQUIRE(type == 19);

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

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

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, ISC_TRUE, target));
}

static inline isc_result_t
fromwire_x25(ARGS_FROMWIRE) {
        isc_region_t sr;

        REQUIRE(type == 19);

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

        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 (isc_region_compare(&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);

        UNUSED(type);
        UNUSED(rdclass);

        if (x25->x25_len < 4)
                return (ISC_R_RANGE);

        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);
        x25->x25 = mem_maybedup(mctx, r.base, x25->x25_len);
        if (x25->x25 == NULL)
                return (ISC_R_NOMEMORY);

        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));
}

static inline isc_boolean_t
checkowner_x25(ARGS_CHECKOWNER) {

        REQUIRE(type == 19);

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

        return (ISC_TRUE);
}

static inline isc_boolean_t
checknames_x25(ARGS_CHECKNAMES) {

        REQUIRE(rdata->type == 19);

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

        return (ISC_TRUE);
}

static inline int
casecompare_x25(ARGS_COMPARE) {
        return (compare_x25(rdata1, rdata2));
}

#endif  /* RDATA_GENERIC_X25_19_C */

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