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#!/usr/bin/env python
'''
Copyright (C) 2020, WAFW00F Developers.
See the LICENSE file for copying permission.
'''
NAME = ' Cloudfront (Amazon) '
def is_waf ( self ) :
# 定义用于检测是否存在特定 Web 应用防火墙（ ）
schemes = [
# 这是标准的检测方案，检查响应头中的 'Server' 字段是否为 'Cloudfront'。
self . matchHeader ( ( ' Server ' , ' Cloudfront ' ) ) ,
# 发现一些样本返回特定格式的 'Via' 头，如 'Via: 1.1 58bfg7h6fg76h8fg7jhdf2.cloudfront.net (CloudFront)'。
self . matchHeader ( ( ' Via ' , r ' ([0-9 \ .]+?)? \ w+? \ .cloudfront \ .net \ (Cloudfront \ ) ' ) ) ,
# 请求令牌随这个头一起发送，例如：'X-Amz-Cf-Id: sX5QSkbAzSwd-xx3RbJmxYHL3iVNNyXa1UIebDNCshQbHxCjVcWDww=='。
self . matchHeader ( ( ' X-Amz-Cf-Id ' , ' .+? ' ) , attack = True ) ,
# 这是在响应头中发现的另一个可靠指纹，检查 'X-Cache' 头是否为 'Error from Cloudfront'。
self . matchHeader ( ( ' X-Cache ' , ' Error from Cloudfront ' ) , attack = True ) ,
# 这些指纹在拦截页面上找到，检查响应内容中是否包含特定字符串，表示由 cloudfront（ ）
self . matchContent ( r ' Generated by cloudfront \ (CloudFront \ ) ' )
]
# 如果方案列表中的任何一个方案为真，则认为检测到了 WAF。
if any ( i for i in schemes ) :
return True
else :
return False
