可怕的Evercookie和CakePHP

Question

所以我试图在一个埃弗曲奇网站上实现cakePHP，但是我得到了一些非常非常奇怪的结果。我刚刚把代码文件复制并粘贴到我的app/webroot目录中，我似乎没有收到任何404错误，但是我的cookie没有保存--它们每次都会被重写。更奇怪的是，当我加载页面时，它至少会向发送90条GET请求，并在Google.com中存储4-5个SQLite数据库；evercookie网站只存储one。

我在生成的HTML页面中的代码如下：

var ec = new evercookie();

// set a cookie "id" to a random 10 character string
// usage: ec.set(key, value)
ec.set("id", "vm5m172dyg");


// retrieve a cookie called "id" (simply)
ec.get("id", function(value) { alert("Cookie value is " + value) });



// or use a more advanced callback function for getting our cookie
// the cookie value is the first param
// an object containing the different storage methods
// and returned cookie values is the second parameter

function getCookie(best_candidate, all_candidates)

    {

    alert("The retrieved cookie is: " + best_candidate + "\n" +
        "You can see what each storage mechanism returned " +
        "by looping through the all_candidates object.");

         for (var item in all_candidates){

        document.write("Storage mechanism " + item +
                  " returned: " + all_candidates[item] + "<br>");

     }

}

    ec.get("id", getCookie);



// we look for "candidates" based off the number of "cookies" that
// come back matching since it's possible for mismatching cookies.
// the best candidate is most likely the correct one

这段代码的一部分写入我的文档，下面是输出(在我看来很好)：

Storage mechanism userData returned: undefined
Storage mechanism cookieData returned: d9g6mfoo4y
Storage mechanism localData returned: d9g6mfoo4y
Storage mechanism globalData returned: undefined
Storage mechanism sessionData returned: d9g6mfoo4y
Storage mechanism windowData returned: d9g6mfoo4y
Storage mechanism historyData returned: undefined
Storage mechanism pngData returned: d9g6mfoo4y
Storage mechanism etagData returned: d9g6mfoo4y
Storage mechanism cacheData returned: d9g6mfoo4y
Storage mechanism dbData returned: d9g6mfoo4y
Storage mechanism lsoData returned: d9g6mfoo4y
Storage mechanism slData returned: d9g6mfoo4y

那么，我的问题是如何防止发送到Google的90+请求？我不知道它为什么这么做。如果我一次在这个网站上有十个用户(这并不令人难以置信)，那就是超过900(0)。你们中有谁知道为什么每次我刷新页面的时候饼干都会重置自己？，这正是我想要阻止的.

Answer 1

好吧，别让我觉得蠢！结果是，代码开始时的ec.set()调用是在每个页面加载开始时设置cookie。所以，我调整了一些东西，而且，呃，现在起作用了。我不再向谷歌发送90个请求。

// retrieve a cookie called "id" (simply)
ec.get("id", function(value) { 
    if(value == undefined){
        // set a cookie "id" to a random 10 character string
        // usage: ec.set(key, value)
        ec.set("id", "<?php echo $hash ?>");
    }
    else
    {
        // do nothing
    }
});