lib/isc/netaddr.c

	netaddr.c revision 6eccf5bd07eb9abf65cc08fec4a8fc97b62c0e1b
5d82424f5d3c77c092c111b935041fd3dc4b3e98Andreas Gustafsson/*
499b34cea04a46823d003d4c0520c8b03e8513cbBrian Wellington * Copyright (C) 1999-2001  Internet Software Consortium.
40f53fa8d9c6a4fc38c0014495e7a42b08f52481David Lawrence *
5d82424f5d3c77c092c111b935041fd3dc4b3e98Andreas Gustafsson * Permission to use, copy, modify, and distribute this software for any
5d82424f5d3c77c092c111b935041fd3dc4b3e98Andreas Gustafsson * purpose with or without fee is hereby granted, provided that the above
5d82424f5d3c77c092c111b935041fd3dc4b3e98Andreas Gustafsson * copyright notice and this permission notice appear in all copies.
40f53fa8d9c6a4fc38c0014495e7a42b08f52481David Lawrence *
15a44745412679c30a6d022733925af70a38b715David Lawrence * THE SOFTWARE IS PROVIDED "AS IS" AND INTERNET SOFTWARE CONSORTIUM
15a44745412679c30a6d022733925af70a38b715David Lawrence * DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL
15a44745412679c30a6d022733925af70a38b715David Lawrence * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL
15a44745412679c30a6d022733925af70a38b715David Lawrence * INTERNET SOFTWARE CONSORTIUM BE LIABLE FOR ANY SPECIAL, DIRECT,
15a44745412679c30a6d022733925af70a38b715David Lawrence * INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING
15a44745412679c30a6d022733925af70a38b715David Lawrence * FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT,
15a44745412679c30a6d022733925af70a38b715David Lawrence * NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION
15a44745412679c30a6d022733925af70a38b715David Lawrence * WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
5d82424f5d3c77c092c111b935041fd3dc4b3e98Andreas Gustafsson */
5d82424f5d3c77c092c111b935041fd3dc4b3e98Andreas Gustafsson
6eccf5bd07eb9abf65cc08fec4a8fc97b62c0e1bBrian Wellington/* $Id: netaddr.c,v 1.16 2001/03/26 21:33:05 bwelling Exp $ */
9c3531d72aeaad6c5f01efe6a1c82023e1379e4dDavid Lawrence
5d82424f5d3c77c092c111b935041fd3dc4b3e98Andreas Gustafsson#include <config.h>
5d82424f5d3c77c092c111b935041fd3dc4b3e98Andreas Gustafsson
8eaa51a6991ea6bc6c9db0b907beacde8dd1fed2Andreas Gustafsson#include <stdio.h>
5d82424f5d3c77c092c111b935041fd3dc4b3e98Andreas Gustafsson
8eaa51a6991ea6bc6c9db0b907beacde8dd1fed2Andreas Gustafsson#include <isc/buffer.h>
9cd6d409b78a6f833b681c13a68fbdc7c024fe66David Lawrence#include <isc/msgs.h>
5d82424f5d3c77c092c111b935041fd3dc4b3e98Andreas Gustafsson#include <isc/netaddr.h>
8eaa51a6991ea6bc6c9db0b907beacde8dd1fed2Andreas Gustafsson#include <isc/print.h>
5d82424f5d3c77c092c111b935041fd3dc4b3e98Andreas Gustafsson#include <isc/sockaddr.h>
1a69a1a78cfaa86f3b68bbc965232b7876d4da2aDavid Lawrence#include <isc/string.h>
364a82f7c25b62967678027043425201a5e5171aBob Halley#include <isc/util.h>
5d82424f5d3c77c092c111b935041fd3dc4b3e98Andreas Gustafsson
b356893425f18a2399771faa875e91318f204fb5Andreas Gustafssonisc_boolean_t
b356893425f18a2399771faa875e91318f204fb5Andreas Gustafssonisc_netaddr_equal(const isc_netaddr_t *a, const isc_netaddr_t *b) {
b356893425f18a2399771faa875e91318f204fb5Andreas Gustafsson    REQUIRE(a != NULL && b != NULL);
b356893425f18a2399771faa875e91318f204fb5Andreas Gustafsson
b356893425f18a2399771faa875e91318f204fb5Andreas Gustafsson    if (a->family != b->family)
b356893425f18a2399771faa875e91318f204fb5Andreas Gustafsson        return (ISC_FALSE);
b356893425f18a2399771faa875e91318f204fb5Andreas Gustafsson
b356893425f18a2399771faa875e91318f204fb5Andreas Gustafsson    switch (a->family) {
b356893425f18a2399771faa875e91318f204fb5Andreas Gustafsson    case AF_INET:
b356893425f18a2399771faa875e91318f204fb5Andreas Gustafsson        if (a->type.in.s_addr != b->type.in.s_addr)
b356893425f18a2399771faa875e91318f204fb5Andreas Gustafsson            return (ISC_FALSE);
b356893425f18a2399771faa875e91318f204fb5Andreas Gustafsson        break;
b356893425f18a2399771faa875e91318f204fb5Andreas Gustafsson    case AF_INET6:
ed019cabc1cc75d4412010c331876e4ae5080a4dDavid Lawrence        if (memcmp(&a->type.in6, &b->type.in6, sizeof a->type.in6)
ed019cabc1cc75d4412010c331876e4ae5080a4dDavid Lawrence            != 0)
b356893425f18a2399771faa875e91318f204fb5Andreas Gustafsson            return (ISC_FALSE);
b356893425f18a2399771faa875e91318f204fb5Andreas Gustafsson        break;
b356893425f18a2399771faa875e91318f204fb5Andreas Gustafsson    default:
b356893425f18a2399771faa875e91318f204fb5Andreas Gustafsson        return (ISC_FALSE);
b356893425f18a2399771faa875e91318f204fb5Andreas Gustafsson    }
b356893425f18a2399771faa875e91318f204fb5Andreas Gustafsson    return (ISC_TRUE);
b356893425f18a2399771faa875e91318f204fb5Andreas Gustafsson}
b356893425f18a2399771faa875e91318f204fb5Andreas Gustafsson
5d82424f5d3c77c092c111b935041fd3dc4b3e98Andreas Gustafssonisc_boolean_t
5d82424f5d3c77c092c111b935041fd3dc4b3e98Andreas Gustafssonisc_netaddr_eqprefix(const isc_netaddr_t *a, const isc_netaddr_t *b,
5d82424f5d3c77c092c111b935041fd3dc4b3e98Andreas Gustafsson             unsigned int prefixlen)
5d82424f5d3c77c092c111b935041fd3dc4b3e98Andreas Gustafsson{
87cafc5e70f79f2586d067fbdd64f61bbab069d2David Lawrence    const unsigned char *pa, *pb;
5d82424f5d3c77c092c111b935041fd3dc4b3e98Andreas Gustafsson    unsigned int ipabytes; /* Length of whole IP address in bytes */
5d82424f5d3c77c092c111b935041fd3dc4b3e98Andreas Gustafsson    unsigned int nbytes;   /* Number of significant whole bytes */
5d82424f5d3c77c092c111b935041fd3dc4b3e98Andreas Gustafsson    unsigned int nbits;    /* Number of significant leftover bits */
40f53fa8d9c6a4fc38c0014495e7a42b08f52481David Lawrence
5d82424f5d3c77c092c111b935041fd3dc4b3e98Andreas Gustafsson    REQUIRE(a != NULL && b != NULL);
5d82424f5d3c77c092c111b935041fd3dc4b3e98Andreas Gustafsson
5d82424f5d3c77c092c111b935041fd3dc4b3e98Andreas Gustafsson    if (a->family != b->family)
5d82424f5d3c77c092c111b935041fd3dc4b3e98Andreas Gustafsson        return (ISC_FALSE);
40f53fa8d9c6a4fc38c0014495e7a42b08f52481David Lawrence
5d82424f5d3c77c092c111b935041fd3dc4b3e98Andreas Gustafsson    switch (a->family) {
5d82424f5d3c77c092c111b935041fd3dc4b3e98Andreas Gustafsson    case AF_INET:
87cafc5e70f79f2586d067fbdd64f61bbab069d2David Lawrence        pa = (const unsigned char *) &a->type.in;
87cafc5e70f79f2586d067fbdd64f61bbab069d2David Lawrence        pb = (const unsigned char *) &b->type.in;
5d82424f5d3c77c092c111b935041fd3dc4b3e98Andreas Gustafsson        ipabytes = 4;
5d82424f5d3c77c092c111b935041fd3dc4b3e98Andreas Gustafsson        break;
5d82424f5d3c77c092c111b935041fd3dc4b3e98Andreas Gustafsson    case AF_INET6:
87cafc5e70f79f2586d067fbdd64f61bbab069d2David Lawrence        pa = (const unsigned char *) &a->type.in6;
87cafc5e70f79f2586d067fbdd64f61bbab069d2David Lawrence        pb = (const unsigned char *) &b->type.in6;
5d82424f5d3c77c092c111b935041fd3dc4b3e98Andreas Gustafsson        ipabytes = 16;
5d82424f5d3c77c092c111b935041fd3dc4b3e98Andreas Gustafsson        break;
5d82424f5d3c77c092c111b935041fd3dc4b3e98Andreas Gustafsson    default:
5d82424f5d3c77c092c111b935041fd3dc4b3e98Andreas Gustafsson        pa = pb = NULL; /* Avoid silly compiler warning. */
5d82424f5d3c77c092c111b935041fd3dc4b3e98Andreas Gustafsson        ipabytes = 0; /* Ditto. */
5d82424f5d3c77c092c111b935041fd3dc4b3e98Andreas Gustafsson        return (ISC_FALSE);
5d82424f5d3c77c092c111b935041fd3dc4b3e98Andreas Gustafsson    }
5d82424f5d3c77c092c111b935041fd3dc4b3e98Andreas Gustafsson
87cafc5e70f79f2586d067fbdd64f61bbab069d2David Lawrence    /*
87cafc5e70f79f2586d067fbdd64f61bbab069d2David Lawrence     * Don't crash if we get a pattern like 10.0.0.1/9999999.
87cafc5e70f79f2586d067fbdd64f61bbab069d2David Lawrence     */
5d82424f5d3c77c092c111b935041fd3dc4b3e98Andreas Gustafsson    if (prefixlen > ipabytes * 8)
5d82424f5d3c77c092c111b935041fd3dc4b3e98Andreas Gustafsson        prefixlen = ipabytes * 8;
5d82424f5d3c77c092c111b935041fd3dc4b3e98Andreas Gustafsson
5d82424f5d3c77c092c111b935041fd3dc4b3e98Andreas Gustafsson    nbytes = prefixlen / 8;
5d82424f5d3c77c092c111b935041fd3dc4b3e98Andreas Gustafsson    nbits = prefixlen % 8;
5d82424f5d3c77c092c111b935041fd3dc4b3e98Andreas Gustafsson
5d82424f5d3c77c092c111b935041fd3dc4b3e98Andreas Gustafsson    if (nbytes > 0) {
5d82424f5d3c77c092c111b935041fd3dc4b3e98Andreas Gustafsson        if (memcmp(pa, pb, nbytes) != 0)
5d82424f5d3c77c092c111b935041fd3dc4b3e98Andreas Gustafsson            return (ISC_FALSE);
5d82424f5d3c77c092c111b935041fd3dc4b3e98Andreas Gustafsson    }
5d82424f5d3c77c092c111b935041fd3dc4b3e98Andreas Gustafsson    if (nbits > 0) {
5d82424f5d3c77c092c111b935041fd3dc4b3e98Andreas Gustafsson        unsigned int bytea, byteb, mask;
5d82424f5d3c77c092c111b935041fd3dc4b3e98Andreas Gustafsson        INSIST(nbytes < ipabytes);
5d82424f5d3c77c092c111b935041fd3dc4b3e98Andreas Gustafsson        INSIST(nbits < 8);
5d82424f5d3c77c092c111b935041fd3dc4b3e98Andreas Gustafsson        bytea = pa[nbytes];
5d82424f5d3c77c092c111b935041fd3dc4b3e98Andreas Gustafsson        byteb = pb[nbytes];
5d82424f5d3c77c092c111b935041fd3dc4b3e98Andreas Gustafsson        mask = (0xFF << (8-nbits)) & 0xFF;
5d82424f5d3c77c092c111b935041fd3dc4b3e98Andreas Gustafsson        if ((bytea & mask) != (byteb & mask))
5d82424f5d3c77c092c111b935041fd3dc4b3e98Andreas Gustafsson            return (ISC_FALSE);
5d82424f5d3c77c092c111b935041fd3dc4b3e98Andreas Gustafsson    }
5d82424f5d3c77c092c111b935041fd3dc4b3e98Andreas Gustafsson    return (ISC_TRUE);
5d82424f5d3c77c092c111b935041fd3dc4b3e98Andreas Gustafsson}
5d82424f5d3c77c092c111b935041fd3dc4b3e98Andreas Gustafsson
8eaa51a6991ea6bc6c9db0b907beacde8dd1fed2Andreas Gustafssonisc_result_t
8eaa51a6991ea6bc6c9db0b907beacde8dd1fed2Andreas Gustafssonisc_netaddr_totext(const isc_netaddr_t *netaddr, isc_buffer_t *target) {
8eaa51a6991ea6bc6c9db0b907beacde8dd1fed2Andreas Gustafsson    char abuf[sizeof "xxxx:xxxx:xxxx:xxxx:xxxx:xxxx:255.255.255.255"];
8eaa51a6991ea6bc6c9db0b907beacde8dd1fed2Andreas Gustafsson    unsigned int alen;
8eaa51a6991ea6bc6c9db0b907beacde8dd1fed2Andreas Gustafsson    const char *r;
8eaa51a6991ea6bc6c9db0b907beacde8dd1fed2Andreas Gustafsson
8eaa51a6991ea6bc6c9db0b907beacde8dd1fed2Andreas Gustafsson    REQUIRE(netaddr != NULL);
8eaa51a6991ea6bc6c9db0b907beacde8dd1fed2Andreas Gustafsson
8eaa51a6991ea6bc6c9db0b907beacde8dd1fed2Andreas Gustafsson    r = inet_ntop(netaddr->family, &netaddr->type, abuf, sizeof abuf);
8eaa51a6991ea6bc6c9db0b907beacde8dd1fed2Andreas Gustafsson    if (r == NULL)
8eaa51a6991ea6bc6c9db0b907beacde8dd1fed2Andreas Gustafsson        return (ISC_R_FAILURE);
8eaa51a6991ea6bc6c9db0b907beacde8dd1fed2Andreas Gustafsson
8eaa51a6991ea6bc6c9db0b907beacde8dd1fed2Andreas Gustafsson    alen = strlen(abuf);
8eaa51a6991ea6bc6c9db0b907beacde8dd1fed2Andreas Gustafsson    INSIST(alen < sizeof(abuf));
8eaa51a6991ea6bc6c9db0b907beacde8dd1fed2Andreas Gustafsson
8eaa51a6991ea6bc6c9db0b907beacde8dd1fed2Andreas Gustafsson    if (alen > isc_buffer_availablelength(target))
8eaa51a6991ea6bc6c9db0b907beacde8dd1fed2Andreas Gustafsson        return (ISC_R_NOSPACE);
40f53fa8d9c6a4fc38c0014495e7a42b08f52481David Lawrence
8eaa51a6991ea6bc6c9db0b907beacde8dd1fed2Andreas Gustafsson    isc_buffer_putmem(target, (unsigned char *)abuf, alen);
8eaa51a6991ea6bc6c9db0b907beacde8dd1fed2Andreas Gustafsson
8eaa51a6991ea6bc6c9db0b907beacde8dd1fed2Andreas Gustafsson    return (ISC_R_SUCCESS);
8eaa51a6991ea6bc6c9db0b907beacde8dd1fed2Andreas Gustafsson}
8eaa51a6991ea6bc6c9db0b907beacde8dd1fed2Andreas Gustafsson
8eaa51a6991ea6bc6c9db0b907beacde8dd1fed2Andreas Gustafssonvoid
8eaa51a6991ea6bc6c9db0b907beacde8dd1fed2Andreas Gustafssonisc_netaddr_format(isc_netaddr_t *na, char *array, unsigned int size) {
8eaa51a6991ea6bc6c9db0b907beacde8dd1fed2Andreas Gustafsson    isc_result_t result;
8eaa51a6991ea6bc6c9db0b907beacde8dd1fed2Andreas Gustafsson    isc_buffer_t buf;
8eaa51a6991ea6bc6c9db0b907beacde8dd1fed2Andreas Gustafsson
8eaa51a6991ea6bc6c9db0b907beacde8dd1fed2Andreas Gustafsson    isc_buffer_init(&buf, array, size);
8eaa51a6991ea6bc6c9db0b907beacde8dd1fed2Andreas Gustafsson    result = isc_netaddr_totext(na, &buf);
8eaa51a6991ea6bc6c9db0b907beacde8dd1fed2Andreas Gustafsson
8eaa51a6991ea6bc6c9db0b907beacde8dd1fed2Andreas Gustafsson    /*
8eaa51a6991ea6bc6c9db0b907beacde8dd1fed2Andreas Gustafsson     * Null terminate.
8eaa51a6991ea6bc6c9db0b907beacde8dd1fed2Andreas Gustafsson     */
8eaa51a6991ea6bc6c9db0b907beacde8dd1fed2Andreas Gustafsson    if (result == ISC_R_SUCCESS) {
8eaa51a6991ea6bc6c9db0b907beacde8dd1fed2Andreas Gustafsson        if (isc_buffer_availablelength(&buf) >= 1)
8eaa51a6991ea6bc6c9db0b907beacde8dd1fed2Andreas Gustafsson            isc_buffer_putuint8(&buf, 0);
8eaa51a6991ea6bc6c9db0b907beacde8dd1fed2Andreas Gustafsson        else
8eaa51a6991ea6bc6c9db0b907beacde8dd1fed2Andreas Gustafsson            result = ISC_R_NOSPACE;
8eaa51a6991ea6bc6c9db0b907beacde8dd1fed2Andreas Gustafsson    }
40f53fa8d9c6a4fc38c0014495e7a42b08f52481David Lawrence
8eaa51a6991ea6bc6c9db0b907beacde8dd1fed2Andreas Gustafsson    if (result != ISC_R_SUCCESS) {
8eaa51a6991ea6bc6c9db0b907beacde8dd1fed2Andreas Gustafsson        snprintf(array, size,
9cd6d409b78a6f833b681c13a68fbdc7c024fe66David Lawrence             isc_msgcat_get(isc_msgcat, ISC_MSGSET_NETADDR,
9cd6d409b78a6f833b681c13a68fbdc7c024fe66David Lawrence                    ISC_MSG_UNKNOWNADDR,
9cd6d409b78a6f833b681c13a68fbdc7c024fe66David Lawrence                    "<unknown address, family %u>"),
8eaa51a6991ea6bc6c9db0b907beacde8dd1fed2Andreas Gustafsson             na->family);
8eaa51a6991ea6bc6c9db0b907beacde8dd1fed2Andreas Gustafsson        array[size - 1] = '\0';
8eaa51a6991ea6bc6c9db0b907beacde8dd1fed2Andreas Gustafsson    }
8eaa51a6991ea6bc6c9db0b907beacde8dd1fed2Andreas Gustafsson}
8eaa51a6991ea6bc6c9db0b907beacde8dd1fed2Andreas Gustafsson
5d82424f5d3c77c092c111b935041fd3dc4b3e98Andreas Gustafssonisc_result_t
87cafc5e70f79f2586d067fbdd64f61bbab069d2David Lawrenceisc_netaddr_masktoprefixlen(const isc_netaddr_t *s, unsigned int *lenp) {
5d82424f5d3c77c092c111b935041fd3dc4b3e98Andreas Gustafsson    unsigned int nbits, nbytes, ipbytes, i;
87cafc5e70f79f2586d067fbdd64f61bbab069d2David Lawrence    const unsigned char *p;
40f53fa8d9c6a4fc38c0014495e7a42b08f52481David Lawrence
5d82424f5d3c77c092c111b935041fd3dc4b3e98Andreas Gustafsson    switch (s->family) {
5d82424f5d3c77c092c111b935041fd3dc4b3e98Andreas Gustafsson    case AF_INET:
87cafc5e70f79f2586d067fbdd64f61bbab069d2David Lawrence        p = (const unsigned char *) &s->type.in;
5d82424f5d3c77c092c111b935041fd3dc4b3e98Andreas Gustafsson        ipbytes = 4;
5d82424f5d3c77c092c111b935041fd3dc4b3e98Andreas Gustafsson        break;
5d82424f5d3c77c092c111b935041fd3dc4b3e98Andreas Gustafsson    case AF_INET6:
87cafc5e70f79f2586d067fbdd64f61bbab069d2David Lawrence        p = (const unsigned char *) &s->type.in6;
5d82424f5d3c77c092c111b935041fd3dc4b3e98Andreas Gustafsson        ipbytes = 16;
5d82424f5d3c77c092c111b935041fd3dc4b3e98Andreas Gustafsson        break;
5d82424f5d3c77c092c111b935041fd3dc4b3e98Andreas Gustafsson    default:
5d82424f5d3c77c092c111b935041fd3dc4b3e98Andreas Gustafsson        ipbytes = 0;
5d82424f5d3c77c092c111b935041fd3dc4b3e98Andreas Gustafsson        return (ISC_R_NOTIMPLEMENTED);
5d82424f5d3c77c092c111b935041fd3dc4b3e98Andreas Gustafsson    }
5d82424f5d3c77c092c111b935041fd3dc4b3e98Andreas Gustafsson    nbytes = nbits = 0;
5d82424f5d3c77c092c111b935041fd3dc4b3e98Andreas Gustafsson    for (i = 0; i < ipbytes; i++) {
5d82424f5d3c77c092c111b935041fd3dc4b3e98Andreas Gustafsson        if (p[i] != 0xFF)
5d82424f5d3c77c092c111b935041fd3dc4b3e98Andreas Gustafsson            break;
5d82424f5d3c77c092c111b935041fd3dc4b3e98Andreas Gustafsson    }
5d82424f5d3c77c092c111b935041fd3dc4b3e98Andreas Gustafsson    nbytes = i;
5d82424f5d3c77c092c111b935041fd3dc4b3e98Andreas Gustafsson    if (i < ipbytes) {
5d82424f5d3c77c092c111b935041fd3dc4b3e98Andreas Gustafsson        unsigned int c = p[nbytes];
5d82424f5d3c77c092c111b935041fd3dc4b3e98Andreas Gustafsson        while ((c & 0x80) != 0 && nbits < 8) {
5d82424f5d3c77c092c111b935041fd3dc4b3e98Andreas Gustafsson            c <<= 1; nbits++;
5d82424f5d3c77c092c111b935041fd3dc4b3e98Andreas Gustafsson        }
5d82424f5d3c77c092c111b935041fd3dc4b3e98Andreas Gustafsson        if ((c & 0xFF) != 0)
5d82424f5d3c77c092c111b935041fd3dc4b3e98Andreas Gustafsson            return (ISC_R_MASKNONCONTIG);
5d82424f5d3c77c092c111b935041fd3dc4b3e98Andreas Gustafsson        i++;
5d82424f5d3c77c092c111b935041fd3dc4b3e98Andreas Gustafsson    }
5d82424f5d3c77c092c111b935041fd3dc4b3e98Andreas Gustafsson    for (; i < ipbytes; i++) {
5d82424f5d3c77c092c111b935041fd3dc4b3e98Andreas Gustafsson        if (p[i] != 0)
5d82424f5d3c77c092c111b935041fd3dc4b3e98Andreas Gustafsson            return (ISC_R_MASKNONCONTIG);
5d82424f5d3c77c092c111b935041fd3dc4b3e98Andreas Gustafsson        i++;
5d82424f5d3c77c092c111b935041fd3dc4b3e98Andreas Gustafsson    }
5d82424f5d3c77c092c111b935041fd3dc4b3e98Andreas Gustafsson    *lenp = nbytes * 8 + nbits;
5d82424f5d3c77c092c111b935041fd3dc4b3e98Andreas Gustafsson    return (ISC_R_SUCCESS);
5d82424f5d3c77c092c111b935041fd3dc4b3e98Andreas Gustafsson}
5d82424f5d3c77c092c111b935041fd3dc4b3e98Andreas Gustafsson
5d82424f5d3c77c092c111b935041fd3dc4b3e98Andreas Gustafssonvoid
87cafc5e70f79f2586d067fbdd64f61bbab069d2David Lawrenceisc_netaddr_fromin(isc_netaddr_t *netaddr, const struct in_addr *ina) {
5d82424f5d3c77c092c111b935041fd3dc4b3e98Andreas Gustafsson    memset(netaddr, 0, sizeof *netaddr);
5d82424f5d3c77c092c111b935041fd3dc4b3e98Andreas Gustafsson    netaddr->family = AF_INET;
5d82424f5d3c77c092c111b935041fd3dc4b3e98Andreas Gustafsson    netaddr->type.in = *ina;
5d82424f5d3c77c092c111b935041fd3dc4b3e98Andreas Gustafsson}
5d82424f5d3c77c092c111b935041fd3dc4b3e98Andreas Gustafsson
5d82424f5d3c77c092c111b935041fd3dc4b3e98Andreas Gustafssonvoid
87cafc5e70f79f2586d067fbdd64f61bbab069d2David Lawrenceisc_netaddr_fromin6(isc_netaddr_t *netaddr, const struct in6_addr *ina6) {
5d82424f5d3c77c092c111b935041fd3dc4b3e98Andreas Gustafsson    memset(netaddr, 0, sizeof *netaddr);
5d82424f5d3c77c092c111b935041fd3dc4b3e98Andreas Gustafsson    netaddr->family = AF_INET6;
5d82424f5d3c77c092c111b935041fd3dc4b3e98Andreas Gustafsson    netaddr->type.in6 = *ina6;
5d82424f5d3c77c092c111b935041fd3dc4b3e98Andreas Gustafsson}
5d82424f5d3c77c092c111b935041fd3dc4b3e98Andreas Gustafsson
5d82424f5d3c77c092c111b935041fd3dc4b3e98Andreas Gustafssonvoid
d80da258e377f02f0dcd703b89a1044cc58e949fMichael Graffisc_netaddr_fromsockaddr(isc_netaddr_t *t, const isc_sockaddr_t *s) {
5d82424f5d3c77c092c111b935041fd3dc4b3e98Andreas Gustafsson    int family = s->type.sa.sa_family;
5d82424f5d3c77c092c111b935041fd3dc4b3e98Andreas Gustafsson    t->family = family;
5d82424f5d3c77c092c111b935041fd3dc4b3e98Andreas Gustafsson    switch (family) {
5d82424f5d3c77c092c111b935041fd3dc4b3e98Andreas Gustafsson        case AF_INET:
5d82424f5d3c77c092c111b935041fd3dc4b3e98Andreas Gustafsson        t->type.in = s->type.sin.sin_addr;
5d82424f5d3c77c092c111b935041fd3dc4b3e98Andreas Gustafsson                break;
5d82424f5d3c77c092c111b935041fd3dc4b3e98Andreas Gustafsson        case AF_INET6:
5d82424f5d3c77c092c111b935041fd3dc4b3e98Andreas Gustafsson        memcpy(&t->type.in6, &s->type.sin6.sin6_addr, 16);
5d82424f5d3c77c092c111b935041fd3dc4b3e98Andreas Gustafsson                break;
5d82424f5d3c77c092c111b935041fd3dc4b3e98Andreas Gustafsson        default:
5d82424f5d3c77c092c111b935041fd3dc4b3e98Andreas Gustafsson                INSIST(0);
5d82424f5d3c77c092c111b935041fd3dc4b3e98Andreas Gustafsson        }
5d82424f5d3c77c092c111b935041fd3dc4b3e98Andreas Gustafsson}
5d82424f5d3c77c092c111b935041fd3dc4b3e98Andreas Gustafsson
7e361074bc8a2df7a0891a7040eea02ca3a5e286Andreas Gustafssonvoid
7e361074bc8a2df7a0891a7040eea02ca3a5e286Andreas Gustafssonisc_netaddr_any(isc_netaddr_t *netaddr) {
7e361074bc8a2df7a0891a7040eea02ca3a5e286Andreas Gustafsson    memset(netaddr, 0, sizeof *netaddr);
7e361074bc8a2df7a0891a7040eea02ca3a5e286Andreas Gustafsson    netaddr->family = AF_INET;
7e361074bc8a2df7a0891a7040eea02ca3a5e286Andreas Gustafsson    netaddr->type.in.s_addr = INADDR_ANY;
7e361074bc8a2df7a0891a7040eea02ca3a5e286Andreas Gustafsson}
7e361074bc8a2df7a0891a7040eea02ca3a5e286Andreas Gustafsson
7e361074bc8a2df7a0891a7040eea02ca3a5e286Andreas Gustafssonvoid
7e361074bc8a2df7a0891a7040eea02ca3a5e286Andreas Gustafssonisc_netaddr_any6(isc_netaddr_t *netaddr) {
7e361074bc8a2df7a0891a7040eea02ca3a5e286Andreas Gustafsson    memset(netaddr, 0, sizeof *netaddr);
7e361074bc8a2df7a0891a7040eea02ca3a5e286Andreas Gustafsson    netaddr->family = AF_INET6;
7e361074bc8a2df7a0891a7040eea02ca3a5e286Andreas Gustafsson    netaddr->type.in6 = in6addr_any;
7e361074bc8a2df7a0891a7040eea02ca3a5e286Andreas Gustafsson}
7e361074bc8a2df7a0891a7040eea02ca3a5e286Andreas Gustafsson
d80da258e377f02f0dcd703b89a1044cc58e949fMichael Graffisc_boolean_t
d80da258e377f02f0dcd703b89a1044cc58e949fMichael Graffisc_netaddr_ismulticast(isc_netaddr_t *na) {
d80da258e377f02f0dcd703b89a1044cc58e949fMichael Graff    switch (na->family) {
d80da258e377f02f0dcd703b89a1044cc58e949fMichael Graff    case AF_INET:
d80da258e377f02f0dcd703b89a1044cc58e949fMichael Graff        return (ISC_TF(ISC_IPADDR_ISMULTICAST(na->type.in.s_addr)));
d80da258e377f02f0dcd703b89a1044cc58e949fMichael Graff    case AF_INET6:
d80da258e377f02f0dcd703b89a1044cc58e949fMichael Graff        return (ISC_TF(IN6_IS_ADDR_MULTICAST(&na->type.in6)));
d80da258e377f02f0dcd703b89a1044cc58e949fMichael Graff    default:
d80da258e377f02f0dcd703b89a1044cc58e949fMichael Graff        return (ISC_FALSE);  /* XXXMLG ? */
d80da258e377f02f0dcd703b89a1044cc58e949fMichael Graff    }
d80da258e377f02f0dcd703b89a1044cc58e949fMichael Graff}
6eccf5bd07eb9abf65cc08fec4a8fc97b62c0e1bBrian Wellington
6eccf5bd07eb9abf65cc08fec4a8fc97b62c0e1bBrian Wellingtonvoid
6eccf5bd07eb9abf65cc08fec4a8fc97b62c0e1bBrian Wellingtonisc_netaddr_fromv4mapped(isc_netaddr_t *t, const isc_netaddr_t *s) {
6eccf5bd07eb9abf65cc08fec4a8fc97b62c0e1bBrian Wellington    REQUIRE(s->family == AF_INET6);
6eccf5bd07eb9abf65cc08fec4a8fc97b62c0e1bBrian Wellington    REQUIRE(IN6_IS_ADDR_V4MAPPED(&s->type.in6));
6eccf5bd07eb9abf65cc08fec4a8fc97b62c0e1bBrian Wellington
6eccf5bd07eb9abf65cc08fec4a8fc97b62c0e1bBrian Wellington    memset(t, 0, sizeof *t);
6eccf5bd07eb9abf65cc08fec4a8fc97b62c0e1bBrian Wellington    t->family = AF_INET;
6eccf5bd07eb9abf65cc08fec4a8fc97b62c0e1bBrian Wellington    memcpy(&t->type.in, (const char *)&s->type.in6 + 12, 4);
6eccf5bd07eb9abf65cc08fec4a8fc97b62c0e1bBrian Wellington    return;
6eccf5bd07eb9abf65cc08fec4a8fc97b62c0e1bBrian Wellington}