lifes a cruel cruel mistress when your ISP cockblocks you

main.py

@@ -6,6 +6,19 @@ import subprocess
 import platform
 from concurrent.futures import ThreadPoolExecutor, as_completed
 import threading
+import os
+import queue
+
+log_queue = queue.Queue()
+
+def logger_thread():
+    while True:
+        msg = log_queue.get()
+        if msg is None:
+            break
+        with print_lock:
+            sys.stdout.write("\n" + msg + "\n")
+            sys.stdout.flush()
 
 try:
     ip_range = input("enter ip range (e.g., 192.168.1.1-192.168.1.20): ").strip()
@@ -34,6 +47,28 @@ osname = platform.system().lower()
 ping_cmd = ["ping", "-c", "1", "-W", "1"] if osname != "windows" else ["ping", "-n", "1", "-w", "1000"]
 shutdown_event = threading.Event()
 
+ip_line_map = {}
+ip_status_lock = threading.Lock()
+print_lock = threading.Lock()
+
+def move_cursor_to_line(line_num):
+    sys.stdout.write(f"\033[{line_num};0H")
+
+def clear_screen():
+    sys.stdout.write("\033[2J")
+    sys.stdout.flush()
+
+def print_overwrite(ip, msg):
+    with ip_status_lock:
+        line = ip_line_map.get(ip)
+        if line is not None:
+            move_cursor_to_line(line)
+            sys.stdout.write(f"\033[K[{ip}] {msg}")
+            sys.stdout.flush()
+
+def print_open_port(ip, port, hostname):
+    log_queue.put(f"[{ip}] port {port} is OPEN ({hostname})")
+
 def ping_ip(ip):
     try:
         cmd = ping_cmd + [ip]
@@ -45,23 +80,18 @@ def ping_ip(ip):
 def is_private_ip(ip):
     return ipaddress.IPv4Address(ip).is_private
 
+alive_ips = []
+
+def ping_all_ips(ips):
+    with ThreadPoolExecutor(max_workers=100) as p_exec:
+        futures = {p_exec.submit(ping_ip, ip): ip for ip in ips}
+        for future in as_completed(futures):
+            ip = futures[future]
+            if future.result():
+                alive_ips.append(ip)
+
 open_ports = []
 open_ports_lock = threading.Lock()
-print_lock = threading.Lock()
-ip_status_lines = {}
-ip_status_lock = threading.Lock()
-
-def print_overwrite(ip, msg):
-    with ip_status_lock:
-        last = ip_status_lines.get(ip, "")
-        clear_len = max(len(last), len(msg))
-        sys.stdout.write(f"\r[{ip}] {msg}" + " "*(clear_len - len(msg)))
-        sys.stdout.flush()
-        ip_status_lines[ip] = msg
-
-def print_open_port(ip, port, hostname):
-    with print_lock:
-        print(f"\n[{ip}] port {port} is OPEN ({hostname})")
 
 def scan_port(ip, port):
     print_overwrite(ip, f"scanning port {port}...")
@@ -81,21 +111,6 @@ def scan_port(ip, port):
         s.close()
 
 def scan_ports_for_ip(ip):
-    scan_it = True
-    if is_private_ip(ip):
-        with print_lock:
-            print(f"\n[~] pinging private ip: {ip}")
-        if not ping_ip(ip):
-            with print_lock:
-                print(f"[-] {ip} no ping reply. skipping.")
-            scan_it = False
-    else:
-        with print_lock:
-            print(f"\n[~] public ip {ip}, skipping ping")
-
-    if not scan_it:
-        return
-
     with ThreadPoolExecutor(max_workers=10) as p_exec:
         futures = [p_exec.submit(scan_port, ip, port) for port in range(port_start, port_end + 1)]
         for future in as_completed(futures):
@@ -106,10 +121,7 @@ def scan_ports_for_ip(ip):
             except Exception as e:
                 with print_lock:
                     print(f"[!] port scan err on {ip}: {e}")
-    with ip_status_lock:
-        sys.stdout.write(f"\r[{ip}] scan done.{' '*40}\n")
-        sys.stdout.flush()
-        ip_status_lines.pop(ip, None)
+    print_overwrite(ip, "scan done.")
 
 def scan_ports_for_but_fast(ip):
     with ThreadPoolExecutor(max_workers=100) as p_exec:
@@ -122,20 +134,46 @@ def scan_ports_for_but_fast(ip):
             except Exception as e:
                 with print_lock:
                     print(f"[!] port scan err on {ip}: {e}")
-    with ip_status_lock:
-        sys.stdout.write(f"\r[{ip}] scan done.{' '*40}\n")
-        sys.stdout.flush()
-        ip_status_lines.pop(ip, None)
+    print_overwrite(ip, "scan done.")
+
+# --- main ---
+log_thread = threading.Thread(target=logger_thread, daemon=True)
+log_thread.start()
 
 try:
-    ips = [str(ipaddress.IPv4Address(i)) for i in range(int(ip_start), int(ip_end)+1)]
-    single = ip_start == ip_end
+    all_ips = [str(ipaddress.IPv4Address(i)) for i in range(int(ip_start), int(ip_end)+1)]
+    private_ips = [ip for ip in all_ips if is_private_ip(ip)]
+
+    print("[~] pinging private IPs only...")
+    alive_ips = []
+    ping_all_ips(private_ips)
+
+    if not alive_ips:
+        public_ips = [ip for ip in all_ips if not is_private_ip(ip)]
+        if public_ips:
+            print("[~] no private IPs alive, skipping ping on public IPs, assuming they're alive")
+            alive_ips = public_ips
+        else:
+            print("[-] no IPs responded to ping. exiting.")
+            sys.exit(0)
+
+        if not alive_ips:
+            print("[-] no IPs responded to ping. exiting.")
+            sys.exit(0)
+
+    clear_screen()
+    for idx, ip in enumerate(alive_ips):
+        ip_line_map[ip] = idx + 1
+        move_cursor_to_line(idx + 1)
+        print(f"[{ip}] preparing...", end='')
+
+    single = len(alive_ips) == 1
     if single:
-        print(f"single ip: {ips[0]} — going full send (unless isp blocks u lol) :p")
-        scan_ports_for_but_fast(ips[0])
+        print_overwrite(alive_ips[0], "single ip: going full send (unless isp blocks u lol) :p")
+        scan_ports_for_but_fast(alive_ips[0])
     else:
         with ThreadPoolExecutor(max_workers=3) as ip_exec:
-            futs = {ip_exec.submit(scan_ports_for_ip, ip): ip for ip in ips}
+            futs = {ip_exec.submit(scan_ports_for_ip, ip): ip for ip in alive_ips}
             for fut in as_completed(futs):
                 if shutdown_event.is_set():
                     break
@@ -151,7 +189,7 @@ except KeyboardInterrupt:
 except Exception as e:
     print(f"[!] error: {e}")
 
-print("-"*60)
+print("\n" + "-"*60)
 print("scan done at:", str(datetime.now()))
 print("-"*60)