PHP Class to Scan Ports

gistfile1.txt

<?php

class PortScanner {

    private $subnet;
    private $ports;
    private $timeout;

    public function __construct($subnet, $ports = [80, 443, 22, 21, 23], $timeout = 1) {
        $this->subnet = $subnet;    // The local subnet in CIDR notation (e.g., 192.168.1.0/24)
        $this->ports = $ports;      // Array of ports to scan (default: HTTP, HTTPS, SSH, FTP, Telnet)
        $this->timeout = $timeout;  // Timeout for each connection attempt (in seconds)
    }

    // Generate all IPs in the subnet
    private function generateIPs() {
        $subnetParts = explode('.', $this->subnet);
        $baseIP = implode('.', array_slice($subnetParts, 0, 3)) . '.';
        $startRange = (int)$subnetParts[3];
        
        $ips = [];
        for ($i = 1; $i < 255; $i++) {
            $ips[] = $baseIP . ($startRange + $i);
        }

        return $ips;
    }

    // Check if a given IP address has a port open
    private function checkPort($ip, $port) {
        $connection = @fsockopen($ip, $port, $errno, $errstr, $this->timeout);
        if (is_resource($connection)) {
            fclose($connection);
            return true;
        }
        return false;
    }

    // Scan a host for open ports
    public function scan() {
        $openPorts = [];
        $ips = $this->generateIPs();

        foreach ($ips as $ip) {
            foreach ($this->ports as $port) {
                if ($this->checkPort($ip, $port)) {
                    echo "Host: $ip, Port: $port is open.\n";
                    $openPorts[$ip][] = $port;
                }
            }
        }

        return $openPorts;
    }
}

// Example usage:
$scanner = new PortScanner('192.168.1.0', [80, 443, 22]); // Use your local subnet and preferred ports
$openPorts = $scanner->scan();

echo "Open ports found:\n";
print_r($openPorts);

?>