finnoscarmax/network-scanner-tool
GitHub: finnoscarmax/network-scanner-tool
一款用于扫描附近 Wi‑Fi 网络并记录信号强度的 Python 教学工具，解决近距离无线网络发现与信号监控问题。
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# network-scanner-tool
用于扫描附近 Wi-Fi 网络并记录信号强度的 Python 工具。开发中。
Network Scanner Tool - 仅供学习使用
作者：finn-oscar-max
最后更新：2026 年 3 月 30 日
import subprocess
import json
import datetime
import hashlib
from typing import List, Dict
class NetworkScanner:
```
Scans nearby Wi-Fi networks and logs access points.
def __init__(self, interface: str = "wlan0"):
self.interface = interface
self.scan_results = []
self.log_file = "scan_log.json"
def scan_networks(self) -> List[Dict]:
"""
Execute iwlist scan and parse results.
"""
try:
output = subprocess.check_output(
["sudo", "iwlist", self.interface, "scan"],
stderr=subprocess.DEVNULL,
text=True
)
return self._parse_scan(output)
except subprocess.CalledProcessError:
print("[ERROR] Scan failed. Check interface.")
return []
def _parse_scan(self, raw_output: str) -> List[Dict]:
"""
Parse iwlist output into structured data.
"""
networks = []
current = {}
for line in raw_output.split('\n'):
line = line.strip()
if 'Cell' in line:
if current:
networks.append(current)
current = {}
elif 'Address:' in line:
current['bssid'] = line.split('Address: ')[1]
elif 'ESSID:' in line:
essid = line.split('ESSID:"')[1].rstrip('"')
current['ssid'] = essid if essid else "[HIDDEN]"
elif 'Quality=' in line:
quality = line.split('Quality=')[1].split(' ')[0]
current['signal'] = quality
elif 'Encryption key:' in line:
current['encrypted'] = 'on' in line.lower()
if current:
networks.append(current)
return networks
def log_results(self, networks: List[Dict]) -> None:
"""
Save scan results with timestamp.
"""
log_entry = {
"timestamp": datetime.datetime.now().isoformat(),
"networks": networks,
"device_id": hashlib.sha256(b"finn-oscar-max").hexdigest()[:8]
}
with open(self.log_file, 'a') as f:
json.dump(log_entry, f)
f.write('\n')
print(f"[+] Logged {len(networks)} networks to {self.log_file}")
def check_signal_strength(self, bssid: str) -> int:
"""
Monitor specific BSSID for signal changes.
Useful for proximity alerts.
"""
networks = self.scan_networks()
for net in networks:
if net.get('bssid') == bssid:
quality = net.get('signal', '0/100')
return int(quality.split('/')[0])
return -1
def run_monitor(self, target_bssid: str, interval: int = 5):
"""
Continuously monitor a target network.
"""
print(f"[*] Monitoring {target_bssid} every {interval} seconds...")
try:
while True:
strength = self.check_signal_strength(target_bssid)
if strength > 70:
print(f"[!] Strong signal detected! Strength: {strength}")
elif strength >= 0:
print(f"[.] Signal strength: {strength}")
else:
print(f"[-] Target not found")
time.sleep(interval)
except KeyboardInterrupt:
print("\n[*] Monitoring stopped")
```
if __name__ == "__main__":
scanner = NetworkScanner()
```
# 使用示例
networks = scanner.scan_networks()
scanner.log_results(networks)
for net in networks[:5]:
print(f"SSID: {net.get('ssid')} | BSSID: {net.get('bssid')} | Signal: {net.get('signal')}")
```
标签：ETW劫持, Python, Wi-Fi, 信号扫描, 无后门, 日志记录, 网络工具