IPSEC_ANYADDR(3)IPSEC_ANYADDR(3)NAME
ipsec_anyaddr, ipsec_isanyaddr, ipsec_unspecaddr, ipsec_isunspecaddr,
ipsec_loopbackaddr, ipsec_isloopbackaddr - get and test for addresses
of type "any", "unspecified" and loopback get "any" address
SYNOPSIS
#include <libreswan.h>
const char *anyaddr(int af, ip_address *dst);
int isanyaddr(const ip_address *src);
const char *unspecaddr(int af, ip_address *dst);
int isunspecaddr(const ip_address *src);
const char *loopbackaddr(int af, ip_address *dst);
int isloopbackaddr(const ip_address *src);
DESCRIPTION
These functions fill in, and test for, special values of the ip_address
type.
Anyaddr fills in the destination *dst with the ``any'' address of
address family af (normally AF_INET or AF_INET6). The IPv4 ``any''
address is the one embodied in the old INADDR_ANY macro.
Isanyaddr returns 1 if the src address equals the ``any'' address, and
0 otherwise.
Similarly, unspecaddr supplies, and isunspecaddr tests for, the
``unspecified'' address, which may be the same as the ``any'' address.
Similarly, loopbackaddr supplies, and islookbackaddr tests for, the
loopback address.
Anyaddr, unspecaddr, and loopbackaddr return NULL for success and a
pointer to a string-literal error message for failure; see DIAGNOSTICS.
SEE ALSOinet(3), ipsec_addrtot(3), ipsec_sameaddr(3)DIAGNOSTICS
Fatal errors in the address-supplying functions are: unknown address
family.
HISTORY
Written for the FreeS/WAN project by Henry Spencer.
8 Sept 2000 IPSEC_ANYADDR(3)
