netconnect.pl

#!/usr/bin/perl

use strict;
use Getopt::Long;

sub usage {
    print <<"END_USAGE";
NetConnect - TCP/UDP Connection Testing Tool

Usage: $0 [options]

Options:
  -h, --help            Show this help message and exit.
  -c PORT_1 PORT_2 ...  Create TCP/UDP ports on the local computer.
  -t SERVER_RANGE       Test connections with multiple servers or a range of IP addresses.
  -p PORT_1 PORT_2 ...  Ports to test connections with.

Examples:
  Create ports 8080 and 9000 on the local computer:
  $0 -c 8080 9000

  Test connectivity to ports 22, 80, and 443 on multiple servers:
  $0 -t 192.168.1.100-203.0.113.10 -p 22 80 443
END_USAGE
}

sub create_ports {
    print "Creating TCP/UDP ports on the local computer...\n";
    # Implement the logic to create ports here
    foreach my $port (@_) {
        print "Port $port created.\n";
    }
}

sub test_connections {
    print "Testing connections...\n";
    # Implement the logic to test connections here
    foreach my $server (@servers) {
        foreach my $port (@ports) {
            print "Testing connectivity to $server:$port ...\n";
            # Implement the logic to test connection to each server and port here
            # Output success or failure messages accordingly
        }
    }
}

my ( $help, @ports, $server_range );
GetOptions(
    'h|help' => \$help,
    'c=s{1,}' => sub { create_ports(@ARGV) and exit },
    't=s' => \$server_range,
    'p=s{1,}' => \@ports,
);

if ($help) {
    usage();
    exit 0;
}

# Check if both create and test options are used together
if ( defined $server_range && scalar @ports > 0 ) {
    print "Error: Cannot use create ports and test options together.\n";
    usage();
    exit 1;
}

# Check if either create or test options are used
if ( !defined $server_range && scalar @ports == 0 ) {
    # No options provided, run the interactive menu
    print "Interactive menu is not yet implemented. Use command-line options instead.\n";
    exit 1;
}

# Check if test option is used without specifying ports
if ( defined $server_range && scalar @ports == 0 ) {
    print "Error: Test option requires specifying ports with the -p option.\n";
    usage();
    exit 1;
}

# Check if test option is used without specifying servers
if ( !defined $server_range && scalar @ports > 0 ) {
    print "Error: Test option requires specifying servers with the -t option.\n";
    usage();
    exit 1;
}

# Split server_range into start and end IPs
my ( $start_ip, $end_ip ) = split /-/, $server_range;

# Generate the array of servers from the range
use Net::CIDR::Lite;
my $cidr = Net::CIDR::Lite->new;
$cidr->add_range($start_ip, $end_ip);
my @servers = $cidr->list();

# Perform the test connections
test_connections();