使用JS重写API拦截运营商广告

左手 posted @ 2016年7月21日 23:21 in 前端开发 with tags js api重写 js拦截广告 , 8364 阅读

近期公司站点通过联通4G网站访问时被运营商插入广告代码,通过手机抓包定位到运营商值入的广告代码。

植入的广告代码通过在固定url的请求中添加内容插行一段js,通过body.appendChild在页面引入一段js代码。想到一个应急方案,通过改写appendChild来拦截广告,经测试有效。代码如下:

(function() {
var rootEl = top.document.body;
var originAppendChild = rootEl.appendChild;
try {
    rootEl.appendChild = function (elem) {
    var src = '';
    if (typeof elem == 'object' && elem != null && elem.getAttribute) {
        src = elem.getAttribute('src');
    }
    if (typeof src == 'string' && src.length) {
        if ( src.match(/^(?:http(?:s)?:)?\/\/\d{1,3}\.\d{1,3}\.\d{1,3}\.\d{1,3}/)
            || src.match(/cifenqi\.com/) != null) {
        return;
        }
    }
    originAppendChild.apply(rootEl, [].slice.call(arguments, 0));
    }
}
catch(e) { }
})();

ISP广告干的是非法勾当多使用ip地址,因此直接屏蔽ip地址的元素。此方法只能应急可被绕过,难怪某度、某宝纷纷启用全站https。

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welefen 说:
2016年8月09日 09:56

hi,你好

我是开源项目 ThinkJS 的作者,这个项目是 360 奇舞团的开源项目之一,看到你在 GitHub 上使用的用户名是 thinkjs,请问是否愿意将 thinkjs 转移给我们,我们愿意支出一定的报酬。

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welefen 说:
2016年8月09日 09:57

如果愿意,请添加 QQ 499979038 细聊,非常感谢!

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HRMS SBI 说:
2022年8月02日 15:17

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