rdata/generic/l32_105.c

/*
 * Copyright (C) 2013-2017  Internet Systems Consortium, Inc. ("ISC")
 *
 * This Source Code Form is subject to the terms of the Mozilla Public
 * License, v. 2.0. If a copy of the MPL was not distributed with this
 * file, You can obtain one at http://mozilla.org/MPL/2.0/.
 */

#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 == dns_rdatatype_l32);

    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 == dns_rdatatype_l32);
    REQUIRE(rdata->length == 6);

    UNUSED(tctx);

    dns_rdata_toregion(rdata, &region);
    num = uint16_fromregion(&region);
    isc_region_consume(&region, 2);
    snprintf(buf, sizeof(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 == dns_rdatatype_l32);

    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 == dns_rdatatype_l32);
    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 == dns_rdatatype_l32);
    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 == dns_rdatatype_l32);
    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 == dns_rdatatype_l32);
    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 == dns_rdatatype_l32);

    return;
}

static inline isc_result_t
additionaldata_l32(ARGS_ADDLDATA) {

    REQUIRE(rdata->type == dns_rdatatype_l32);
    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 == dns_rdatatype_l32);
    REQUIRE(rdata->length == 6);

    dns_rdata_toregion(rdata, &r);

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

static inline isc_boolean_t
checkowner_l32(ARGS_CHECKOWNER) {

    REQUIRE(type == dns_rdatatype_l32);

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

    return (ISC_TRUE);
}

static inline isc_boolean_t
checknames_l32(ARGS_CHECKNAMES) {

    REQUIRE(rdata->type == dns_rdatatype_l32);
    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 */