在Google Chrome扩展程序中安全地覆盖document.cookie [英] Safely overriding document.cookie in Google Chrome extension

问题描述

我尝试在我的Chrome扩展程序中重写document.cookie，并且在获取原始document.cookie功能的同时也遇到了很多麻烦。目前我有这样的：

  var _cookie = document.cookie; 
 document .__ defineSetter __（cookie，function（the_cookie）{_cookie = the_cookie;}）; 
 document .__ defineGetter __（cookie，function（）{return _cookie;}）; 
  

我从内容脚本使用

我看到的行为是我重新定义的setter和getter被调用，但是原始功能不再有效。例如，我可以使用开发工具检查_cookie和document.cookie，看看它们是否具有相同的期望值，但Chrome的cookie存储中没有出现任何cookie。

谁能告诉我我如何打破原来的文件.ookie功能？问题是document.cookie是一个属性，所以我实际上并没有得到一个指向原始setter的指针吗？ 解决方案

var _cookie = document.cookie; 不保存 cookie 的原始getter和setter，它只是调用getter并保存结果。

这 page （原来的链接，现在已被破解）有一个如何保存cookie setter和getter的例子：

  var cookie_setter =文件.__ lookupSetter__（'cookie'）; 
 var cookie_getter = document .__ lookupGetter__（'cookie'）; 
  

I am trying to override document.cookie in my Chrome extension and I'm having a lot of trouble getting the original document.cookie functionality to work at the same time. Currently I have this:

var _cookie = document.cookie; 
document.__defineSetter__("cookie", function(the_cookie) {_cookie=the_cookie;} );
document.__defineGetter__("cookie", function() {return _cookie;} );

I am injecting the JS from a content script using the technique from here.

The behavior I'm seeing is that my re-defined setter and getter get called, but the original function is no longer working. For example, I can check _cookie and document.cookie using the Developer Tools and see that they have the same, expected value, but no cookies ever appear in Chrome's cookie store.

Can anyone tell me how I am breaking the original document.cookie functionality? Is the problem that document.cookie is a property, so I'm not actually getting a pointer to the original setter?

解决方案

var _cookie = document.cookie; is not saving the original getter and setter for cookie, it is just calling the getter and saving the result.

This page (original link, now broken) has an example of how to save the cookie setter and getter:

var cookie_setter = document.__lookupSetter__ ('cookie');
var cookie_getter = document.__lookupGetter__ ('cookie');

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