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/*
* Copyright (C) 2004-2007, 2009 Internet Systems Consortium, Inc. ("ISC")
* Copyright (C) 1998-2003 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: sockaddr.h,v 1.57 2009-01-18 23:48:14 tbox Exp $ */
#ifndef ISC_SOCKADDR_H
#define ISC_SOCKADDR_H 1
/*! \file isc/sockaddr.h */
#include <isc/lang.h>
#include <isc/net.h>
#include <isc/types.h>
#ifdef ISC_PLATFORM_HAVESYSUNH
#include <sys/un.h>
#endif
struct isc_sockaddr {
union {
struct sockaddr sa;
struct sockaddr_in sin;
struct sockaddr_in6 sin6;
#ifdef ISC_PLATFORM_HAVESYSUNH
struct sockaddr_un sunix;
#endif
} type;
unsigned int length; /* XXXRTH beginning? */
ISC_LINK(struct isc_sockaddr) link;
};
typedef ISC_LIST(struct isc_sockaddr) isc_sockaddrlist_t;
#define ISC_SOCKADDR_CMPADDR 0x0001 /*%< compare the address
* sin_addr/sin6_addr */
#define ISC_SOCKADDR_CMPPORT 0x0002 /*%< compare the port
* sin_port/sin6_port */
#define ISC_SOCKADDR_CMPSCOPE 0x0004 /*%< compare the scope
* sin6_scope */
#define ISC_SOCKADDR_CMPSCOPEZERO 0x0008 /*%< when comparing scopes
* zero scopes always match */
ISC_LANG_BEGINDECLS
isc_boolean_t
isc_sockaddr_compare(const isc_sockaddr_t *a, const isc_sockaddr_t *b,
unsigned int flags);
/*%<
* Compare the elements of the two address ('a' and 'b') as specified
* by 'flags' and report if they are equal or not.
*
* 'flags' is set from ISC_SOCKADDR_CMP*.
*/
isc_boolean_t
isc_sockaddr_equal(const isc_sockaddr_t *a, const isc_sockaddr_t *b);
/*%<
* Return ISC_TRUE iff the socket addresses 'a' and 'b' are equal.
*/
isc_boolean_t
isc_sockaddr_eqaddr(const isc_sockaddr_t *a, const isc_sockaddr_t *b);
/*%<
* Return ISC_TRUE iff the address parts of the socket addresses
* 'a' and 'b' are equal, ignoring the ports.
*/
isc_boolean_t
isc_sockaddr_eqaddrprefix(const isc_sockaddr_t *a, const isc_sockaddr_t *b,
unsigned int prefixlen);
/*%<
* Return ISC_TRUE iff the most significant 'prefixlen' bits of the
* socket addresses 'a' and 'b' are equal, ignoring the ports.
* If 'b''s scope is zero then 'a''s scope will be ignored.
*/
unsigned int
isc_sockaddr_hash(const isc_sockaddr_t *sockaddr, isc_boolean_t address_only);
/*%<
* Return a hash value for the socket address 'sockaddr'. If 'address_only'
* is ISC_TRUE, the hash value will not depend on the port.
*
* IPv6 addresses containing mapped IPv4 addresses generate the same hash
* value as the equivalent IPv4 address.
*/
void
isc_sockaddr_any(isc_sockaddr_t *sockaddr);
/*%<
* Return the IPv4 wildcard address.
*/
void
isc_sockaddr_any6(isc_sockaddr_t *sockaddr);
/*%<
* Return the IPv6 wildcard address.
*/
void
isc_sockaddr_anyofpf(isc_sockaddr_t *sockaddr, int family);
/*%<
* Set '*sockaddr' to the wildcard address of protocol family
* 'family'.
*
* Requires:
* \li 'family' is AF_INET or AF_INET6.
*/
void
isc_sockaddr_fromin(isc_sockaddr_t *sockaddr, const struct in_addr *ina,
in_port_t port);
/*%<
* Construct an isc_sockaddr_t from an IPv4 address and port.
*/
void
isc_sockaddr_fromin6(isc_sockaddr_t *sockaddr, const struct in6_addr *ina6,
in_port_t port);
/*%<
* Construct an isc_sockaddr_t from an IPv6 address and port.
*/
void
isc_sockaddr_v6fromin(isc_sockaddr_t *sockaddr, const struct in_addr *ina,
in_port_t port);
/*%<
* Construct an IPv6 isc_sockaddr_t representing a mapped IPv4 address.
*/
void
isc_sockaddr_fromnetaddr(isc_sockaddr_t *sockaddr, const isc_netaddr_t *na,
in_port_t port);
/*%<
* Construct an isc_sockaddr_t from an isc_netaddr_t and port.
*/
int
isc_sockaddr_pf(const isc_sockaddr_t *sockaddr);
/*%<
* Get the protocol family of 'sockaddr'.
*
* Requires:
*
*\li 'sockaddr' is a valid sockaddr with an address family of AF_INET
* or AF_INET6.
*
* Returns:
*
*\li The protocol family of 'sockaddr', e.g. PF_INET or PF_INET6.
*/
void
isc_sockaddr_setport(isc_sockaddr_t *sockaddr, in_port_t port);
/*%<
* Set the port of 'sockaddr' to 'port'.
*/
in_port_t
isc_sockaddr_getport(const isc_sockaddr_t *sockaddr);
/*%<
* Get the port stored in 'sockaddr'.
*/
isc_result_t
isc_sockaddr_totext(const isc_sockaddr_t *sockaddr, isc_buffer_t *target);
/*%<
* Append a text representation of 'sockaddr' to the buffer 'target'.
* The text will include both the IP address (v4 or v6) and the port.
* The text is null terminated, but the terminating null is not
* part of the buffer's used region.
*
* Returns:
* \li ISC_R_SUCCESS
* \li ISC_R_NOSPACE The text or the null termination did not fit.
*/
void
isc_sockaddr_format(const isc_sockaddr_t *sa, char *array, unsigned int size);
/*%<
* Format a human-readable representation of the socket address '*sa'
* into the character array 'array', which is of size 'size'.
* The resulting string is guaranteed to be null-terminated.
*/
isc_boolean_t
isc_sockaddr_ismulticast(const isc_sockaddr_t *sa);
/*%<
* Returns #ISC_TRUE if the address is a multicast address.
*/
isc_boolean_t
isc_sockaddr_isexperimental(const isc_sockaddr_t *sa);
/*
* Returns ISC_TRUE if the address is a experimental (CLASS E) address.
*/
isc_boolean_t
isc_sockaddr_islinklocal(const isc_sockaddr_t *sa);
/*%<
* Returns ISC_TRUE if the address is a link local address.
*/
isc_boolean_t
isc_sockaddr_issitelocal(const isc_sockaddr_t *sa);
/*%<
* Returns ISC_TRUE if the address is a sitelocal address.
*/
isc_result_t
isc_sockaddr_frompath(isc_sockaddr_t *sockaddr, const char *path);
/*
* Create a UNIX domain sockaddr that refers to path.
*
* Returns:
* \li ISC_R_NOSPACE
* \li ISC_R_NOTIMPLEMENTED
* \li ISC_R_SUCCESS
*/
#define ISC_SOCKADDR_FORMATSIZE \
sizeof("xxxx:xxxx:xxxx:xxxx:xxxx:xxxx:XXX.XXX.XXX.XXX%SSSSSSSSSS#YYYYY")
/*%<
* Minimum size of array to pass to isc_sockaddr_format().
*/
ISC_LANG_ENDDECLS
#endif /* ISC_SOCKADDR_H */
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