NAME¶
ipsec_sameaddr, ipsec_addrcmp, ipsec_samesubnet, ipsec_addrinsubnet,
ipsec_subnetinsubnet, ipsec_subnetishost, ipsec_samesaid, ipsec_sameaddrtype,
ipsec_samesubnettype - do comparisons for addresses, subnets, SA IDs and
address families
SYNOPSIS¶
#include <freeswan.h>
int sameaddr(const ip_address *a, const ip_address *b);
int addrcmp(const ip_address *a, const ip_address *b);
int samesubnet(const ip_subnet *a, const ip_subnet *b);
int addrinsubnet(const ip_address *a, const ip_subnet *s);
int subnetinsubnet(const ip_subnet *a, const ip_subnet *b);
int subnetishost(const ip_subnet *s);
int samesaid(const ip_said *a, const ip_said *b);
int sameaddrtype(const ip_address *a, const ip_address *b);
int samesubnettype(const ip_subnet *a, const ip_subnet *b);
DESCRIPTION¶
These functions do various comparisons and tests on the
ip_address type
and
ip_subnet types.
Sameaddr returns non-zero if addresses
a and
b are
identical, and
0 otherwise. Addresses of different families are never
identical.
Addrcmp returns
-1,
0, or
1 respectively if address
a is less than, equal to, or greater than
b. If they are not of
the same address family, they are never equal; the ordering reported in this
case is arbitrary (and probably not useful) but consistent.
Samesubnet returns non-zero if subnets
a and
b are
identical, and
0 otherwise. Subnets of different address families are
never identical.
Addrinsubnet returns non-zero if address
a is within subnet
s and
0 otherwise. An address is never within a subnet of a
different address family.
Subnetinsubnet returns non-zero if subnet
a is a subset of subnet
b and
0 otherwise. A subnet is deemed to be a subset of itself.
A subnet is never a subset of another subnet if their address families differ.
Subnetishost returns non-zero if subnet
s is in fact only a single
host, and
0 otherwise.
Samesaid returns non-zero if SA IDs
a and
b are identical,
and
0 otherwise.
Sameaddrtype returns non-zero if addresses
a and
b are of
the same address family, and
0 otherwise.
Samesubnettype returns non-zero if subnets
a and
b are of
the same address family, and
0 otherwise.
SEE ALSO¶
inet(3),
ipsec_initaddr(3)
HISTORY¶
Written for the FreeS/WAN project by Henry Spencer.
