fetchDevices.py

import subprocess
import re
import ipaddress
import socket
from concurrent.futures import ThreadPoolExecutor

def get_ipconfig_subnets():
    output = subprocess.check_output("ipconfig", shell=True).decode()
    ip_pattern = re.compile(r"IPv4 Address[^\d]*([\d\.]+)")
    mask_pattern = re.compile(r"Subnet Mask[^\d]*([\d\.]+)")

    ips = ip_pattern.findall(output)
    masks = mask_pattern.findall(output)

    subnets = []
    for ip, mask in zip(ips, masks):
        try:
            network = ipaddress.IPv4Network(f"{ip}/{mask}", strict=False)
            subnets.append(network)
        except ValueError:
            continue
    return subnets, ips   # also return local IPs

def scan_ip(ip, port, results, local_ips):
    if str(ip) in local_ips:   # skip own machine’s IPs
        return
    with socket.socket(socket.AF_INET, socket.SOCK_STREAM) as s:
        s.settimeout(0.5)
        try:
            s.connect((str(ip), port))
            results.append(str(ip))
        except:
            pass

def scan_all_subnets(port=1878):
    subnets, local_ips = get_ipconfig_subnets()
    print(f"Scanning port {port} on these subnets:")
    for subnet in subnets:
        print(f"  - {subnet}")

    results = []
    with ThreadPoolExecutor(max_workers=100) as executor:
        for subnet in subnets:
            for ip in subnet.hosts():
                executor.submit(scan_ip, ip, port, results, local_ips)

    return results

if __name__ == "__main__":
    open_ips = scan_all_subnets(1878)
    print("\nDevices with port 1878 open:")
    for ip in open_ips:
        print(f"  - {ip}")