package shell_anon
import (
	"fmt"
	"net"
	"os/exec"
	"runtime"
	"strconv"
)
type NetworkHider struct {
	obfuscationKey []byte
}
func NewNetworkHider() *NetworkHider {
	return &NetworkHider{
		obfuscationKey: []byte("default-key"),
	}
}
func (n *NetworkHider) SetObfuscationKey(key []byte) {
	n.obfuscationKey = key
}
func (n *NetworkHider) HideConnection(port int) error {
	if runtime.GOOS != "linux" {
		return fmt.Errorf("connection hiding is only supported on Linux")
	}
	
	
	
	_, err := exec.LookPath("iptables")
	if err != nil {
		return fmt.Errorf("iptables command not found")
	}
	
	
	
	
	
	
	return nil
}
func (n *NetworkHider) ObfuscateNetworkTraffic(data []byte) []byte {
	
	
	
	result := make([]byte, len(data))
	for i, b := range data {
		result[i] = b ^ n.obfuscationKey[i%len(n.obfuscationKey)]
	}
	return result
}
func (n *NetworkHider) DeobfuscateNetworkTraffic(obfuscated []byte) []byte {
	
	return n.ObfuscateNetworkTraffic(obfuscated)
}
func (n *NetworkHider) FindCommonPort() (int, error) {
	
	commonPorts := []int{80, 443, 53, 22, 25, 587, 3389, 8080, 8443}
	
	for _, port := range commonPorts {
		listener, err := net.Listen("tcp", "127.0.0.1:"+strconv.Itoa(port))
		if err == nil {
			listener.Close()
			return port, nil
		}
	}
	return 0, fmt.Errorf("no common ports available")
}
func (n *NetworkHider) CreateDNSTunnel(domain string) string {
	
	
	return fmt.Sprintf("echo 'DNS tunneling would be set up to %s'", domain)
}
func (n *NetworkHider) GetNetworkHidingTips() []string {
	return []string{
		"Use common ports (80, 443) to blend with normal traffic",
		"Use encrypted protocols (SSH, TLS)",
		"Use DNS tunneling for covert communication",
		"Use HTTP/HTTPS proxies to hide the origin",
		"Use Tor or other anonymization networks",
		"Use traffic obfuscation techniques",
	}
}
func (n *NetworkHider) IsPortOpen(host string, port int) bool {
	conn, err := net.Dial("tcp", fmt.Sprintf("%s:%d", host, port))
	if err != nil {
		return false
	}
	conn.Close()
	return true
}
func (n *NetworkHider) GetOpenPorts(host string, startPort, endPort int) []int {
	var openPorts []int
	for port := startPort; port <= endPort; port++ {
		if n.IsPortOpen(host, port) {
			openPorts = append(openPorts, port)
		}
	}
	return openPorts
}
func (n *NetworkHider) HideFromNetstat(port int) error {
	if runtime.GOOS != "linux" {
		return fmt.Errorf("netstat hiding is only supported on Linux")
	}
	
	
	return nil
}
