l32_105.c

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/*
 * Copyright (C) 2013, 2014  Internet Systems Consortium, Inc. ("ISC")
 *
 * 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.
 */

#ifndef RDATA_GENERIC_L32_105_C
#define RDATA_GENERIC_L32_105_C

#include <string.h>

#include <isc/net.h>

#define RRTYPE_L32_ATTRIBUTES (0)

static inline isc_result_t
fromtext_l32(ARGS_FROMTEXT) {
        isc_token_t token;
        struct in_addr addr;
        isc_region_t region;

        REQUIRE(type == 105);

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

        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));

        RETERR(isc_lex_getmastertoken(lexer, &token, isc_tokentype_string,
                                      ISC_FALSE));

        if (getquad(DNS_AS_STR(token), &addr, lexer, callbacks) != 1)
                RETTOK(DNS_R_BADDOTTEDQUAD);
        isc_buffer_availableregion(target, &region);
        if (region.length < 4)
                return (ISC_R_NOSPACE);
        memmove(region.base, &addr, 4);
        isc_buffer_add(target, 4);
        return (ISC_R_SUCCESS);
}

static inline isc_result_t
totext_l32(ARGS_TOTEXT) {
        isc_region_t region;
        char buf[sizeof("65000")];
        unsigned short num;

        REQUIRE(rdata->type == 105);
        REQUIRE(rdata->length == 6);

        UNUSED(tctx);

        dns_rdata_toregion(rdata, &region);
        num = uint16_fromregion(&region);
        isc_region_consume(&region, 2);
        sprintf(buf, "%u", num);
        RETERR(str_totext(buf, target));

        RETERR(str_totext(" ", target));

        return (inet_totext(AF_INET, &region, target));
}

static inline isc_result_t
fromwire_l32(ARGS_FROMWIRE) {
        isc_region_t sregion;

        REQUIRE(type == 105);

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

        isc_buffer_activeregion(source, &sregion);
        if (sregion.length != 6)
                return (DNS_R_FORMERR);
        isc_buffer_forward(source, sregion.length);
        return (mem_tobuffer(target, sregion.base, sregion.length));
}

static inline isc_result_t
towire_l32(ARGS_TOWIRE) {

        REQUIRE(rdata->type == 105);
        REQUIRE(rdata->length == 6);

        UNUSED(cctx);

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

static inline int
compare_l32(ARGS_COMPARE) {
        isc_region_t region1;
        isc_region_t region2;

        REQUIRE(rdata1->type == rdata2->type);
        REQUIRE(rdata1->rdclass == rdata2->rdclass);
        REQUIRE(rdata1->type == 105);
        REQUIRE(rdata1->length == 6);
        REQUIRE(rdata2->length == 6);

        dns_rdata_toregion(rdata1, &region1);
        dns_rdata_toregion(rdata2, &region2);
        return (isc_region_compare(&region1, &region2));
}

static inline isc_result_t
fromstruct_l32(ARGS_FROMSTRUCT) {
        dns_rdata_l32_t *l32 = source;
        isc_uint32_t n;

        REQUIRE(type == 105);
        REQUIRE(source != NULL);
        REQUIRE(l32->common.rdtype == type);
        REQUIRE(l32->common.rdclass == rdclass);

        UNUSED(type);
        UNUSED(rdclass);

        RETERR(uint16_tobuffer(l32->pref, target));
        n = ntohl(l32->l32.s_addr);
        return (uint32_tobuffer(n, target));
}

static inline isc_result_t
tostruct_l32(ARGS_TOSTRUCT) {
        isc_region_t region;
        dns_rdata_l32_t *l32 = target;
        isc_uint32_t n;

        REQUIRE(rdata->type == 105);
        REQUIRE(target != NULL);
        REQUIRE(rdata->length == 6);

        UNUSED(mctx);

        l32->common.rdclass = rdata->rdclass;
        l32->common.rdtype = rdata->type;
        ISC_LINK_INIT(&l32->common, link);

        dns_rdata_toregion(rdata, &region);
        l32->pref = uint16_fromregion(&region);
        n = uint32_fromregion(&region);
        l32->l32.s_addr = htonl(n);
        return (ISC_R_SUCCESS);
}

static inline void
freestruct_l32(ARGS_FREESTRUCT) {
        dns_rdata_l32_t *l32 = source;

        REQUIRE(source != NULL);
        REQUIRE(l32->common.rdtype == 105);

        return;
}

static inline isc_result_t
additionaldata_l32(ARGS_ADDLDATA) {

        REQUIRE(rdata->type == 105);
        REQUIRE(rdata->length == 6);

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

        return (ISC_R_SUCCESS);
}

static inline isc_result_t
digest_l32(ARGS_DIGEST) {
        isc_region_t r;

        REQUIRE(rdata->type == 105);
        REQUIRE(rdata->length == 6);

        dns_rdata_toregion(rdata, &r);

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

static inline isc_boolean_t
checkowner_l32(ARGS_CHECKOWNER) {

        REQUIRE(type == 105);

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

        return (ISC_TRUE);
}

static inline isc_boolean_t
checknames_l32(ARGS_CHECKNAMES) {

        REQUIRE(rdata->type == 105);
        REQUIRE(rdata->length == 6);

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

        return (ISC_TRUE);
}

static inline int
casecompare_l32(ARGS_COMPARE) {
        return (compare_l32(rdata1, rdata2));
}

#endif  /* RDATA_GENERIC_L32_105_C */

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