Fred Moyer > mod_perl > APR::IpSubnet

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NAME ^

APR::IpSubnet - Perl API for accessing APRs ip_subnet structures

Synopsis ^

  use APR::IpSubnet ();
  
  my $ipsub = APR::IpSubnet->new($pool, "127.0.0.1");
  $ok = $ipsub->test($sock_addr);

Description ^

APR::IpSubnet object represents a range of IP addresses (IPv4/IPv6). A socket connection can be matched against this range to test whether the IP it's coming from is inside or outside of this range.

API ^

APR::IpSubnet provides the following functions and/or methods:

new

Create an IP subnet represenation object

  $ipsubnet = APR::IpSubnet->new($pool, $ip);
  $ipsubnet = APR::IpSubnet->new($pool, $ip, $mask_or_numbits);
obj: APR::IpSubnet (class name)
arg1: $pool ( APR::Pool object )
arg2: $ip ( string )

IP address in one of the two formats: IPv4 (e.g. "127.0.0.1") or IPv6 (e.g. "::1"). IPv6 addresses are accepted only if APR has the IPv6 support enabled.

opt arg3: $mask_or_numbits ( string )

An optional IP mask (e.g. "255.0.0.0") or number of bits (e.g. "15").

If none provided, the default is not to mask off.

ret: $ret ( APR::IpSubnet object )

The IP-subnet object

excpt: APR::Error
since: 2.0.00

test

Test the IP address in the socket address object against a pre-built ip-subnet representation.

  $ret = $ipsub->test($sockaddr);
obj: $ipsub ( APR::IpSubnet object )

The ip-subnet representation

arg1: $sockaddr ( APR::SockAddr object )

The socket address to test

ret: $ret ( boolean )

true if the socket address is within the subnet, false otherwise

since: 2.0.00

This method is used for testing whether or not an address is within a subnet. It's used by module mod_access to check whether the client IP fits into the IP range, supplied by Allow/Deny directives.

Example:

Allow accesses only from the localhost (IPv4):

  use APR::IpSubnet ();
  use Apache2::Connection ();
  use Apache2::RequestRec ();
  my $ipsub = APR::IpSubnet->new($r->pool, "127.0.0.1");
  ok $ipsub->test($r->connection->remote_addr);

See Also ^

mod_perl 2.0 documentation.

Copyright ^

mod_perl 2.0 and its core modules are copyrighted under The Apache Software License, Version 2.0.

Authors ^

The mod_perl development team and numerous contributors.

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