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#!/usr/bin/env python
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'''
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Copyright (C) 2020, WAFW00F Developers.
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See the LICENSE file for copying permission.
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'''
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NAME = 'NAXSI (NBS Systems)'
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def is_waf(self):
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# 定义用于检测是否存在特定 Web 应用防火墙（WAF）的方案列表。
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schemes = [
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# 检查响应头中的'X-Data-Origin'字段是否以'naxsi'开头，后面可以跟任意字符。
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self.matchHeader(('X-Data-Origin', r'^naxsi(.+)?')),
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# 检查响应头中的'Server'字段是否以'naxsi'开头，后面可以跟任意字符。
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self.matchHeader(('Server', r'naxsi(.+)?')),
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# 检查响应内容中是否包含'blocked by naxsi'。
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self.matchContent(r'blocked by naxsi'),
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# 检查响应内容中是否包含'naxsi blocked information'。
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self.matchContent(r'naxsi blocked information')
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]
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# 如果方案列表中的任何一个条件为真，则认为检测到了 WAF。
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if any(i for i in schemes):
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return True
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else:
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return False
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