begin work on the ports matcher
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package Net::Connection::Match::Ports;
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use 5.006;
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use strict;
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use warnings;
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=head1 NAME
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Net::Connection::Match::Ports - Runs a basic port check against a Net::Connection object.
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=head1 VERSION
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Version 0.0.0
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=cut
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our $VERSION = '0.0.0';
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=head1 SYNOPSIS
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use Net::Connection::Match::Port;
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use Net::Connection;
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my $connection_args={
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foreign_host=>'10.0.0.1',
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foreign_port=>'22',
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local_host=>'10.0.0.2',
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local_port=>'12322',
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proto=>'tcp4',
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state=>'ESTABLISHED',
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};
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my $conn=Net::Connection->new( $connection_args );
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my %args=(
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ports=>[
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'smtp',
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'22',
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],
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lports=>[
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'21',
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],
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fports=>[
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'http',
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],
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);
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my $checker=Net::Connection::Match::Ports->new( \%args );
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if ( $checker->match( $conn ) ){
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print "It matches.\n";
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}
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=head1 METHODS
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=head2 new
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This intiates the object.
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It takes a hash reference with atleast one of of the three
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possible keys defined. The possible keys are 'ports'(which
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matches either side), 'lports'(which matches the local side),
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and 'fports'(which matches the foreign side).
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The value of each key is a array with either port numbers or
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names. If names are given, getservbyname will be called. If
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it errors for any of them, it will die.
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If the new method fails, it dies.
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my %args=(
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ports=>[
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'smtp',
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'22',
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],
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lports=>[
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'21',
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],
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fports=>[
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'http',
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],
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);
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my $checker=Net::Connection::Match::Ports->new( \%args );
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=cut
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sub new{
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my %args;
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if(defined($_[1])){
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%args= %{$_[1]};
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};
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# run some basic checks to make sure we have the minimum stuff required to work
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if (
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( ! defined( $args{ports} ) ) &&
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( ! defined( $args{fports} ) ) &&
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( ! defined( $args{lports} ) )
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){
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die ('No [fl]ports key specified in the argument hash');
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}
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if (
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(
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defined( $args{ports} ) &&
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( ! defined( $args{ports}[0] ) )
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) &&
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(
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defined( $args{lports} ) &&
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( ! defined( $args{lports}[0] ) )
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) &&
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(
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defined( $args{fports} ) &&
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( ! defined( $args{fports}[0] ) )
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)
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){
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die ('No ports defined in the in any of the [fl]ports array');
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}
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my $self = {
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ports=>{},
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fports=>{},
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lports=>{},
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};
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bless $self;
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# Process the ports for matching either
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my $ports_int=0;
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if ( defined( $args{ports} ) ){
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while (defined( $args{ports}[$ports_int] )) {
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if ( $args{ports}[$ports_int] =~ /^[0-9]+$/ ){
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$self->{ports}{ $args{ports}[$ports_int] }= $args{ports}[$ports_int];
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}else{
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my $port_number=(getservbyname( $args{ports}[$ports_int] , '' ))[2];
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if( !defined( $port_number ) ){
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die("Could not resolve port '".$args{ports}[$ports_int]."' to a number");
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}
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$self->{ports}{$port_number}=$port_number;
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}
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$ports_int++;
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}
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}
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# Process the ports for matching local ports
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$ports_int=0;
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if ( defined( $args{lports} ) ){
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while (defined( $args{lports}[$ports_int] )) {
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if ( $args{lports}[$ports_int] =~ /^[0-9]+$/ ){
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$self->{lports}{ $args{lports}[$ports_int] }= $args{lports}[$ports_int];
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}else{
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my $port_number=(getservbyname( $args{lports}[$ports_int] , '' ))[2];
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if( !defined( $port_number ) ){
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die("Could not resolve port '".$args{lports}[$ports_int]."' to a number");
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}
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$self->{lports}{$port_number}=$port_number;
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}
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$ports_int++;
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}
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}
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# Process the ports for matching foreign ports
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$ports_int=0;
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if ( defined( $args{fports} ) ){
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while (defined( $args{fports}[$ports_int] )) {
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if ( $args{fports}[$ports_int] =~ /^[0-9]+$/ ){
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$self->{fports}{ $args{fports}[$ports_int] }= $args{fports}[$ports_int];
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}else{
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my $port_number=(getservbyname( $args{fports}[$ports_int] , '' ))[2];
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if( !defined( $port_number ) ){
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die("Could not resolve port '".$args{fports}[$ports_int]."' to a number");
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}
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$self->{fports}{$port_number}=$port_number;
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}
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$ports_int++;
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}
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}
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return $self;
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}
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=head2 match
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Checks if a single Net::Connection object matches the stack.
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One argument is taken and that is a Net::Connection object.
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The returned value is a boolean.
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if ( $checker->match( $conn ) ){
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print "The connection matches.\n";
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}
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=cut
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sub match{
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my $self=$_[0];
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my $object=$_[1];
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if ( !defined( $object ) ){
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return 0;
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}
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if ( ref( $object ) ne 'Net::Connection' ){
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return 0;
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}
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return 0;
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}
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=head1 AUTHOR
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Zane C. Bowers-Hadley, C<< <vvelox at vvelox.net> >>
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=head1 BUGS
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Please report any bugs or feature requests to C<bug-net-connection-match at rt.cpan.org>, or through
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the web interface at L<https://rt.cpan.org/NoAuth/ReportBug.html?Queue=Net-Connection-Match>. I will be notified, and then you'll
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automatically be notified of progress on your bug as I make changes.
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=head1 SUPPORT
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You can find documentation for this module with the perldoc command.
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perldoc Net::Connection::Match
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You can also look for information at:
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=over 4
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=item * RT: CPAN's request tracker (report bugs here)
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L<https://rt.cpan.org/NoAuth/Bugs.html?Dist=Net-Connection-Match>
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=item * AnnoCPAN: Annotated CPAN documentation
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L<http://annocpan.org/dist/Net-Connection-Match>
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=item * CPAN Ratings
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L<https://cpanratings.perl.org/d/Net-Connection-Match>
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=item * Search CPAN
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L<https://metacpan.org/release/Net-Connection-Match>
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=back
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=head1 ACKNOWLEDGEMENTS
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=head1 LICENSE AND COPYRIGHT
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Copyright 2019 Zane C. Bowers-Hadley.
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This program is free software; you can redistribute it and/or modify it
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under the terms of the the Artistic License (2.0). You may obtain a
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copy of the full license at:
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L<http://www.perlfoundation.org/artistic_license_2_0>
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Any use, modification, and distribution of the Standard or Modified
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Versions is governed by this Artistic License. By using, modifying or
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distributing the Package, you accept this license. Do not use, modify,
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or distribute the Package, if you do not accept this license.
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If your Modified Version has been derived from a Modified Version made
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by someone other than you, you are nevertheless required to ensure that
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your Modified Version complies with the requirements of this license.
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This license does not grant you the right to use any trademark, service
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mark, tradename, or logo of the Copyright Holder.
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This license includes the non-exclusive, worldwide, free-of-charge
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patent license to make, have made, use, offer to sell, sell, import and
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otherwise transfer the Package with respect to any patent claims
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licensable by the Copyright Holder that are necessarily infringed by the
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Package. If you institute patent litigation (including a cross-claim or
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counterclaim) against any party alleging that the Package constitutes
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direct or contributory patent infringement, then this Artistic License
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to you shall terminate on the date that such litigation is filed.
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Disclaimer of Warranty: THE PACKAGE IS PROVIDED BY THE COPYRIGHT HOLDER
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AND CONTRIBUTORS "AS IS' AND WITHOUT ANY EXPRESS OR IMPLIED WARRANTIES.
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THE IMPLIED WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR
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PURPOSE, OR NON-INFRINGEMENT ARE DISCLAIMED TO THE EXTENT PERMITTED BY
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YOUR LOCAL LAW. UNLESS REQUIRED BY LAW, NO COPYRIGHT HOLDER OR
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CONTRIBUTOR WILL BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, OR
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CONSEQUENTIAL DAMAGES ARISING IN ANY WAY OUT OF THE USE OF THE PACKAGE,
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EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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=cut
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1; # End of Net::Connection::Match
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