使用瓶子时, 我试图验证一个 cookie 没有被篡改 。 现在, 如果我改变 cookie 值, 它只会丢弃一个错误, 但是我要检查代码是_ valid( session[ user_ id] ), 如果不是的话, 重定向/ 重置 。
在#pocoo的某人说:
- actually, you could call SecureCookie.unserialize and catch the exception
- ah, it fails silently
- looks like you have to try unserializing it and check if you get an empty object from it
有没有人能进一步解释一下这个代码会是什么样子?
safe_str_cmp( client_hash, mac.digest ())) 正在执行检查, 如果饼干被篡改, 检查将会失败 。
取决于你到底想抓住什么 你可以跳到不同的地方
data = request.cookies.get("session")
cookie = werkzeug.contrib.securecookie.SecureCookie.unserialize(data, secret_key)
如果存在 data 和 cookie 没有包含任何数据, 则无序列化失败。 许多原因之一是 safe_str_ cmp () (在 unsergize () 调用) 返回 False 。
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