e332ec93e9
* fix issue: https://github.com/shadowsocks/shadowsocks/issues/995 Command Execution use list instead of string, prevent injection attack.
66 lines
2.4 KiB
Python
Executable file
66 lines
2.4 KiB
Python
Executable file
#!/usr/bin/python
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# -*- coding: utf-8 -*-
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# Copyright (c) 2015 clowwindy
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#
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# Permission is hereby granted, free of charge, to any person obtaining a copy
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# of this software and associated documentation files (the "Software"), to deal
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# in the Software without restriction, including without limitation the rights
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# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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# copies of the Software, and to permit persons to whom the Software is
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# furnished to do so, subject to the following conditions:
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#
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# The above copyright notice and this permission notice shall be included in
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# all copies or substantial portions of the Software.
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#
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# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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# SOFTWARE.
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from __future__ import absolute_import, division, print_function, \
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with_statement
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import sys
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import socket
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import argparse
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import subprocess
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def inet_pton(str_ip):
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try:
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return socket.inet_pton(socket.AF_INET, str_ip)
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except socket.error:
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return None
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if __name__ == '__main__':
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parser = argparse.ArgumentParser(description='See README')
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parser.add_argument('-c', '--count', default=3, type=int,
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help='with how many failure times it should be '
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'considered as an attack')
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config = parser.parse_args()
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ips = {}
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banned = set()
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for line in sys.stdin:
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if 'can not parse header when' not in line:
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continue
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ip_str = line.split()[-1].rsplit(':', 1)[0]
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ip = inet_pton(ip_str)
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if ip is None:
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continue
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if ip not in ips:
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ips[ip] = 1
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sys.stdout.flush()
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else:
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ips[ip] += 1
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if ip not in banned and ips[ip] >= config.count:
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banned.add(ip)
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print('ban ip %s' % ip_str)
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cmd = ['iptables', '-A', 'INPUT', '-s', ip_str, '-j', 'DROP',
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'-m', 'comment', '--comment', 'autoban']
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print(' '.join(cmd), file=sys.stderr)
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sys.stderr.flush()
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subprocess.call(cmd)
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