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/*
* Copyright (C) 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/.
*
* See the COPYRIGHT file distributed with this work for additional
* information regarding copyright ownership.
*/
#ifndef ISC_NETADDR_H
#define ISC_NETADDR_H 1
/*! \file isc/netaddr.h */
#include <isc/lang.h>
#include <isc/net.h>
#include <isc/types.h>
#ifdef ISC_PLATFORM_HAVESYSUNH
#include <sys/types.h>
#include <sys/un.h>
#endif
ISC_LANG_BEGINDECLS
struct isc_netaddr {
unsigned int family;
union {
struct in_addr in;
struct in6_addr in6;
#ifdef ISC_PLATFORM_HAVESYSUNH
char un[sizeof(((struct sockaddr_un *)0)->sun_path)];
#endif
} type;
isc_uint32_t zone;
};
isc_boolean_t
isc_netaddr_equal(const isc_netaddr_t *a, const isc_netaddr_t *b);
/*%<
* Compare network addresses 'a' and 'b'. Return #ISC_TRUE if
* they are equal, #ISC_FALSE if not.
*/
isc_boolean_t
isc_netaddr_eqprefix(const isc_netaddr_t *a, const isc_netaddr_t *b,
unsigned int prefixlen);
/*%<
* Compare the 'prefixlen' most significant bits of the network
* addresses 'a' and 'b'. If 'b''s scope is zero then 'a''s scope is
* ignored. Return #ISC_TRUE if they are equal, #ISC_FALSE if not.
*/
isc_result_t
isc_netaddr_masktoprefixlen(const isc_netaddr_t *s, unsigned int *lenp);
/*%<
* Convert a netmask in 's' into a prefix length in '*lenp'.
* The mask should consist of zero or more '1' bits in the
* most significant part of the address, followed by '0' bits.
* If this is not the case, #ISC_R_MASKNONCONTIG is returned.
*
* Returns:
*\li #ISC_R_SUCCESS
*\li #ISC_R_MASKNONCONTIG
*/
isc_result_t
isc_netaddr_totext(const isc_netaddr_t *netaddr, isc_buffer_t *target);
/*%<
* Append a text representation of 'sockaddr' to the buffer 'target'.
* The text is NOT null terminated. Handles IPv4 and IPv6 addresses.
*
* Returns:
*\li #ISC_R_SUCCESS
*\li #ISC_R_NOSPACE The text or the null termination did not fit.
*\li #ISC_R_FAILURE Unspecified failure
*/
void
isc_netaddr_format(const isc_netaddr_t *na, char *array, unsigned int size);
/*%<
* Format a human-readable representation of the network address '*na'
* into the character array 'array', which is of size 'size'.
* The resulting string is guaranteed to be null-terminated.
*/
#define ISC_NETADDR_FORMATSIZE \
sizeof("xxxx:xxxx:xxxx:xxxx:xxxx:xxxx:XXX.XXX.XXX.XXX%SSSSSSSSSS")
/*%<
* Minimum size of array to pass to isc_netaddr_format().
*/
void
isc_netaddr_fromsockaddr(isc_netaddr_t *netaddr, const isc_sockaddr_t *source);
void
isc_netaddr_fromin(isc_netaddr_t *netaddr, const struct in_addr *ina);
void
isc_netaddr_fromin6(isc_netaddr_t *netaddr, const struct in6_addr *ina6);
isc_result_t
isc_netaddr_frompath(isc_netaddr_t *netaddr, const char *path);
void
isc_netaddr_setzone(isc_netaddr_t *netaddr, isc_uint32_t zone);
isc_uint32_t
isc_netaddr_getzone(const isc_netaddr_t *netaddr);
void
isc_netaddr_any(isc_netaddr_t *netaddr);
/*%<
* Return the IPv4 wildcard address.
*/
void
isc_netaddr_any6(isc_netaddr_t *netaddr);
/*%<
* Return the IPv6 wildcard address.
*/
isc_boolean_t
isc_netaddr_ismulticast(isc_netaddr_t *na);
/*%<
* Returns ISC_TRUE if the address is a multicast address.
*/
isc_boolean_t
isc_netaddr_isexperimental(isc_netaddr_t *na);
/*%<
* Returns ISC_TRUE if the address is a experimental (CLASS E) address.
*/
isc_boolean_t
isc_netaddr_islinklocal(isc_netaddr_t *na);
/*%<
* Returns #ISC_TRUE if the address is a link local address.
*/
isc_boolean_t
isc_netaddr_issitelocal(isc_netaddr_t *na);
/*%<
* Returns #ISC_TRUE if the address is a site local address.
*/
isc_boolean_t
isc_netaddr_isnetzero(isc_netaddr_t *na);
/*%<
* Returns #ISC_TRUE if the address is in net zero.
*/
void
isc_netaddr_fromv4mapped(isc_netaddr_t *t, const isc_netaddr_t *s);
/*%<
* Convert an IPv6 v4mapped address into an IPv4 address.
*/
isc_result_t
isc_netaddr_prefixok(const isc_netaddr_t *na, unsigned int prefixlen);
/*
* Test whether the netaddr 'na' and 'prefixlen' are consistant.
* e.g. prefixlen within range.
* na does not have bits set which are not covered by the prefixlen.
*
* Returns:
* ISC_R_SUCCESS
* ISC_R_RANGE prefixlen out of range
* ISC_R_NOTIMPLEMENTED unsupported family
* ISC_R_FAILURE extra bits.
*/
isc_boolean_t
isc_netaddr_isloopback(const isc_netaddr_t *na);
/*
* Test whether the netaddr 'na' is a loopback IPv4 or IPv6 address (in
* 127.0.0.0/8 or ::1).
*/
ISC_LANG_ENDDECLS
#endif /* ISC_NETADDR_H */