work.vax::mod_perl-2.0.13::docs::api::APR::IpSubnet(3)

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.