match.c File Reference

IP and domain matching functions. More...

#include <match.h>
#include <netinet/in.h>
#include <string.h>
#include <strings.h>

Functions
int	ip4_matchnet (const struct in6_addr *ip, const struct in_addr *net, const unsigned char mask)
int	ip6_matchnet (const struct in6_addr *ip, const struct in6_addr *net, const unsigned char mask)
int	matchdomain (const char *domain, const size_t dl, const char *expr)

Detailed Description

IP and domain matching functions.

Function Documentation

int ip4_matchnet	(	const struct in6_addr *	ip,
		const struct in_addr *	net,
		const unsigned char	mask
	)

check if an IPv4 address is in a given network

Parameters

ip	the IP address to check (network byte order)
net	the network to check (network byte order)
mask	the network mask, must be 0 <= netmask <= 32

Returns

if address is within net/mask

Return values

1	on match
0	no match

int ip6_matchnet	(	const struct in6_addr *	ip,
		const struct in6_addr *	net,
		const unsigned char	mask
	)

check if an IPv6 address is in a given network

Parameters

ip	the IP address to check (network byte order)
net	the network to check (network byte order)
mask	the network mask, must be 0 <= netmask <= 128

Returns

if address is within net/mask

Return values

1	address is within the net/mask
0	address is not within net/mask

int matchdomain	(	const char *	domain,
		const size_t	dl,
		const char *	expr
	)

check if a given expression matches a domain

Parameters

domain	the domain to check
dl	length of domain
expr	the expression to match

Return values

1	on match
0	otherwise