IPSEC_SAMEADDR(3)

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 <libreswan.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.

AUTHOR

Paul Wouters
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