如何从网站注入JS并收集警报消息？

时间：2022-11-29 22:39:15

I am trying to collect alert from website by using overwrite method. I searched on google and found wappalyzer, a Chrome/Firefox extension to detect software on website. It injects a script inject.js when page load and collect information. My method is similar. I make a local website and test it. When I inject overwrite_alert.js manually then it works.

我试图通过使用覆盖方法从网站收集警报。我在google上搜索并发现了一个Chrome / Firefox扩展程序wappalyzer来检测网站上的软件。它在页面加载和收集信息时注入脚本inject.js。我的方法很相似。我建立了一个本地网站并进行测试。当我手动注入overwrite_alert.js然后它工作。

But I want to do it dynamically and apply to other website. So I use headless browser like PhantomJS. The following code which I tried in PhantomJS but it does not work.

但我想动态地做,并申请到其他网站。所以我使用像PhantomJS这样的无头浏览器。我在PhantomJS中尝试过以下代码,但它不起作用。

I am trying to inject a JavaScript on phantom JS. Like this code:

我试图在幻像JS上注入一个JavaScript。喜欢这段代码:

<!DOCTYPE html>
<html>
<head>
    <title>Test alert</title>

    <!-- !!! Inject here !!! <script src="overwrite_alert.js"></script> -->

    <script type="text/javascript" src="other_script.js"> </script>
    <script type="text/javascript">
        alert("Alert content");
    </script>
</head>
<body>
<h1>website content</h1>
</body>
</html>

overwrite_alert.js file from this question:

来自这个问题的overwrite_alert.js文件:

(function() {
    var _alert = window.alert;                   // <-- Reference
    window.alert = function(str) {
        // do something additional
        if(console) console.log(str);
        //return _alert.apply(this, arguments);  // <-- The universal method
        _alert(str);                             // Suits for this case
    };
})();

I tried with onLoadStarted event and My PhantomJS code:

我尝试使用onLoadStarted事件和My PhantomJS代码:

var webPage = require('webpage');
var page = webPage.create();

var url = "https://localhost:5000/alert.html";


page.onConsoleMessage = function(msg, lineNum, sourceId) {
    console.log('CONSOLE> ' + msg);
};

page.onLoadStarted = function() {
    if (page.injectJs('do.js')) {
        var title = page.evaluate(function() {
            // returnTitle is a function loaded from our do.js file - see below
            console.log("evaluate completed");
        });
        console.log(title);
    }
}


page.open(url, function(status) {
    if (status === "success") {
        if (page.injectJs('do.js')) {
            var title = page.evaluate(function() {
                // returnTitle is a function loaded from our do.js file - see below
                console.log("evaluate completed");
            });
            console.log(title);
            phantom.exit();
        }


        page.render("onOpen.png");
    }
});

Result:

$ phantomjs test_inject.js
CONSOLE> from onLoadStarted completed
null
CONSOLE> from page.open
null

1 个解决方案

#1

0  

Since the page.open callback is called after a page is loaded, it would be simply to late to change the implementation of window.alert. You would need to use earlier events such as page.onInitialized, page.onLoadStarted, etc.

由于在加载页面后调用了page.open回调,因此更改window.alert的实现将会很晚。您需要使用之前的事件,例如page.onInitialized,page.onLoadStarted等。

Since you're interested in alerts, you don't need to do that at all, because PhantomJS provides an event for that: page.onAlert

由于您对警报感兴趣,因此您根本不需要这样做,因为PhantomJS为此提供了一个事件:page.onAlert

#1

0  

Since the page.open callback is called after a page is loaded, it would be simply to late to change the implementation of window.alert. You would need to use earlier events such as page.onInitialized, page.onLoadStarted, etc.

由于在加载页面后调用了page.open回调,因此更改window.alert的实现将会很晚。您需要使用之前的事件,例如page.onInitialized,page.onLoadStarted等。

Since you're interested in alerts, you don't need to do that at all, because PhantomJS provides an event for that: page.onAlert

由于您对警报感兴趣,因此您根本不需要这样做,因为PhantomJS为此提供了一个事件:page.onAlert

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