lwaddr.c

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/*
 * Copyright (C) 2004, 2005, 2007, 2008, 2014  Internet Systems Consortium, Inc. ("ISC")
 * Copyright (C) 2000, 2001  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: lwaddr.c,v 1.10 2008/01/11 23:46:56 tbox Exp $ */

/*! \file */

#include <config.h>

#include <string.h>

#include <isc/result.h>
#include <isc/netaddr.h>
#include <isc/sockaddr.h>

#include <lwres/lwres.h>

#include <named/lwaddr.h>

/*%
 * Convert addresses from lwres to isc format.
 */
isc_result_t
lwaddr_netaddr_fromlwresaddr(isc_netaddr_t *na, lwres_addr_t *la) {
        if (la->family != LWRES_ADDRTYPE_V4 && la->family != LWRES_ADDRTYPE_V6)
                return (ISC_R_FAMILYNOSUPPORT);

        if (la->family == LWRES_ADDRTYPE_V4) {
                struct in_addr ina;
                memmove(&ina.s_addr, la->address, 4);
                isc_netaddr_fromin(na, &ina);
        } else {
                struct in6_addr ina6;
                memmove(&ina6.s6_addr, la->address, 16);
                isc_netaddr_fromin6(na, &ina6);
        }
        return (ISC_R_SUCCESS);
}

isc_result_t
lwaddr_sockaddr_fromlwresaddr(isc_sockaddr_t *sa, lwres_addr_t *la,
                              in_port_t port)
{
        isc_netaddr_t na;
        isc_result_t result;

        result = lwaddr_netaddr_fromlwresaddr(&na, la);
        if (result != ISC_R_SUCCESS)
                return (result);
        isc_sockaddr_fromnetaddr(sa, &na, port);
        return (ISC_R_SUCCESS);
}

/*%
 * Convert addresses from isc to lwres format.
 */

isc_result_t
lwaddr_lwresaddr_fromnetaddr(lwres_addr_t *la, isc_netaddr_t *na) {
        if (na->family != AF_INET && na->family != AF_INET6)
                return (ISC_R_FAMILYNOSUPPORT);

        if (na->family == AF_INET) {
                la->family = LWRES_ADDRTYPE_V4;
                la->length = 4;
                memmove(la->address, &na->type.in, 4);
        } else {
                la->family = LWRES_ADDRTYPE_V6;
                la->length = 16;
                memmove(la->address, &na->type.in6, 16);
        }
        return (ISC_R_SUCCESS);
}

isc_result_t
lwaddr_lwresaddr_fromsockaddr(lwres_addr_t *la, isc_sockaddr_t *sa) {
        isc_netaddr_t na;
        isc_netaddr_fromsockaddr(&na, sa);
        return (lwaddr_lwresaddr_fromnetaddr(la, &na));
}

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