获取局域网所在的网段
with os.popen("ipconfig /all") as res: for line in res: line = line.strip() if line.startswith("IPv4"): ipv4 = map(int, re.findall("(\d+)\.(\d+)\.(\d+)\.(\d+)", line)[0]) elif line.startswith("子网掩码"): mask = map(int, re.findall("(\d+)\.(\d+)\.(\d+)\.(\d+)", line)[0]) break net_segment = ".".join([str(i & j) for i, j in zip(ipv4, mask)]).strip(".0") net_segment
结果:
‘192.168.3’
当前我们实际只会使用最后一个位置作为网段,并不需要考虑子网掩码,所以可以简化代码:
with os.popen("ipconfig /all") as res: for line in res: line = line.strip() if line.startswith("IPv4"): net_segment = re.findall("(\d+\.\d+\.\d+)\.\d+", line)[0] break net_segment
完整代码:
import os import re import time from concurrent.futures import ThreadPoolExecutor, wait, ALL_COMPLETED import pandas as pd def get_net_segment(): with os.popen("arp -a") as res: for line in res: line = line.strip() if line.startswith("接口"): net_segment = re.findall( "(\d+\.\d+\.\d+)\.\d+", line)[0] break return net_segment def ping_net_segment_all(net_segment): # for i in range(1, 255): # os.system(f"ping -w 1 -n 1 {net_segment}.{i}") with ThreadPoolExecutor(max_workers=4) as executor: for i in range(1, 255): executor.submit(os.popen, f"ping -w 1 -n 1 {net_segment}.{i}") def get_arp_ip_mac(): header = None with os.popen("arp -a") as res: for line in res: line = line.strip() if not line or line.startswith("接口"): continue if header is None: header = re.split(" {2,}", line.strip()) break df = pd.read_csv(res, sep=" {2,}", names=header, header=0, engine='python') return df def ping_ip_list(ips, max_workers=4): print("正在扫描在线列表") with ThreadPoolExecutor(max_workers=max_workers) as executor: future_tasks = [] for ip in ips: future_tasks.append(executor.submit(os.popen, f"ping -w 1 -n 1 {ip}")) wait(future_tasks, return_when=ALL_COMPLETED) if __name__ == '__main__': # 是否进行初始扫描 init_search = False if init_search: print("正在扫描当前网段所有ip,预计耗时1分钟....") ping_net_segment_all(get_net_segment()) last = None while 1: df = get_arp_ip_mac() df = df.loc[df.类型 == "动态", ["Internet 地址", "物理地址"]] if last is None: print("当前在线的设备:") print(df) else: online = df.loc[~df.物理地址.isin(last.物理地址)] if online.shape[0] > 0: print("新上线设备:") print(online) offline = last[~last.物理地址.isin(df.物理地址)] if offline.shape[0] > 0: print("刚下线设备:") print(offline) time.sleep(5) ping_ip_list(df["Internet 地址"].values) last = df
结果如下:
当前在线的设备: Internet 地址 物理地址 0 192.168.3.3 3c-7c-3f-83-e2-7c 1 192.168.3.10 3c-7c-3f-80-08-1b 2 192.168.3.25 f0-2f-74-82-15-7e 3 192.168.3.26 f0-2f-74-82-15-a2 4 192.168.3.28 f0-2f-74-82-15-38 5 192.168.3.29 f0-2f-74-82-15-d0 6 192.168.3.32 f0-2f-74-82-15-3b 7 192.168.3.33 f0-2f-74-82-15-56 8 192.168.3.39 a8-5e-45-16-79-99 9 192.168.3.225 30-24-a9-5a-eb-82 新上线设备: Internet 地址 物理地址 9 192.168.3.52 3c-7c-3f-c2-cd-cb 刚下线设备: Internet 地址 物理地址 9 192.168.3.52 3c-7c-3f-c2-cd-cb
大功告成了…
原文地址:http://www.cnblogs.com/michael999/p/16923730.html
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