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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 = 'DynamicWeb Injection Check (DynamicWeb)'
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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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# 检查响应头中是否存在'X-403-Status-By'字段且其值为'dw.inj.check'，attack=True 可能表示用于攻击检测场景。
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self.matchHeader(('X-403-Status-By', r'dw.inj.check'), attack=True),
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# 检查响应内容中是否包含特定字符串，表示'by dynamic check'以及可能跟随最多十个任意字符和可选的'module'字符串。
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self.matchContent(r'by dynamic check(.{0,10}?module)?')
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]
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# 如果方案列表中的任何一个方案为真，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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