feat: 系统工具改为异步，增加tcpdump工具

apps/settings/tools/nmap.py

@@ -0,0 +1,57 @@
+import asyncio
+import time
+import nmap
+
+from common.utils.timezone import local_now_display
+from settings.utils import generate_ips
+
+
+def get_nmap_result(nm, ip, ports, timeout):
+    results = []
+    nm.scan(ip, ports=ports, timeout=timeout)
+    tcp_port = nm[ip].get('tcp', {})
+    udp_port = nm[ip].get('udp', {})
+    results.append(f'PORT\tSTATE\tSERVICE')
+    for port, info in tcp_port.items():
+        results.append(f"{port}\t{info.get('state', 'unknown')}\t{info.get('name', 'unknown')}")
+    for port, info in udp_port.items():
+        results.append(f"{port}\t{info.get('state', 'unknown')}\t{info.get('name', 'unknown')}")
+    return results
+
+
+async def once_nmap(nm, ip, ports, timeout, display):
+    await display(f'Starting Nmap at {local_now_display()} for {ip}')
+    try:
+        is_ok = True
+        loop = asyncio.get_running_loop()
+        results = await loop.run_in_executor(None, get_nmap_result, nm, ip, ports, timeout)
+        for result in results:
+            await display(result)
+
+    except KeyError:
+        is_ok = False
+        await display(f'Host seems down.')
+    except Exception as err:
+        is_ok = False
+        await display(f"Error: %s" % err)
+    return is_ok
+
+
+async def verbose_nmap(dest_ips, dest_ports=None, timeout=None, display=None):
+    if not display:
+        return
+
+    ips = generate_ips(dest_ips)
+    dest_port = ','.join(list(dest_ports)) if dest_ports else None
+
+    nm = nmap.PortScanner()
+    success_num, start_time = 0, time.time()
+    nmap_version = '.'.join(map(lambda x: str(x), nm.nmap_version()))
+    await display(f'[Summary] Nmap (v{nmap_version}): {len(ips)} addresses were scanned')
+    for ip in ips:
+        ok = await once_nmap(nm, str(ip), dest_port, timeout, display)
+        if ok:
+            success_num += 1
+        await display()
+    await display(f'[Done] Nmap: {len(ips)} IP addresses ({success_num} hosts up) '
+                  f'scanned in {round(time.time() - start_time, 2)} seconds')