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 <freeswan.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 ALSO¶
inet(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.
