Google chrome extension Chrome/FF/Safari扩展：以类似匿名模式加载隐藏网页

是否可以构建“匿名模式”以在浏览器扩展中加载背景网页？

我正在编写一个非IE跨浏览器扩展，它代表用户定期检查网页。有两个要求：

页面检查在后台进行，尽可能不引人注目。我相信这可以通过在新的无焦点浏览器选项卡中打开页面，或者隐藏在扩展的背景页面的沙盒iframe中来实现

页面检查应在“匿名模式”下运行，且不得使用/更新用户的cookie、历史记录或本地存储。这是为了尽可能地阻止检查污染用户的实际浏览行为

关于如何实施这种“隐姓埋名模式”有什么想法吗？

理想情况下，它可以在尽可能多的浏览器类型中工作（而不是IE）

我目前的想法是：

• 从与页面检查相关联的传入/传出http请求中筛选出cookie头（如果我可以识别所有这些请求的话）（在Safari中不可能？）
• 在每个页面检查之后，从用户的历史记录中筛选出该页面

我发现了一些有用的问题：

必须保留对我们添加的iframe的全局var引用。 然后，您可以像这样更改iframe位置，当它被加载时，它会触发上面的事件侦听器

iframe.contentWindow.location = 'http://www.bing.com/'

DOMContentLoaded标识在该iframe中加载的所有内容。如果页面有帧，它也会检测到

要从历史记录中删除，请在DOMContentLoaded函数中使用历史记录服务从历史记录中删除win.location：

现在，要从该页面中的请求中删除cookie，请使用以下代码：

const {classes: Cc, Constructor: CC, interfaces: Ci, utils: Cu, results: Cr, manager: Cm} = Components;
Cu.import('resource://gre/modules/Services.jsm');

var myTabToSpoofIn = Services.wm.getMostRecentBrowser('navigator:browser').gBrowser.tabContainer[0]; //will spoof in the first tab of your browser

var httpRequestObserver = {
    observe: function (subject, topic, data) {
        var httpChannel, requestURL;

        if (topic == "http-on-modify-request") {
            httpChannel = subject.QueryInterface(Ci.nsIHttpChannel);
            var goodies = loadContextGoodies(httpChannel)
            if (goodies) {
              if (goodies.contentWindow.top == iframe.contentWindow.top) {
                httpChannel.setRequestHeader('Cookie', '', false);
              } else {
                //this page load isnt in our iframe so ignore it
              }
            }
        }
    }
};

Services.obs.addObserver(httpRequestObserver, "http-on-modify-request", false);
//Services.obs.removeObserver(httpRequestObserver, "http-on-modify-request", false); //run this on shudown of your addon otherwise the observer stags registerd







//this function gets the contentWindow and other good stuff from loadContext of httpChannel
function loadContextGoodies(httpChannel) {
    //httpChannel must be the subject of http-on-modify-request QI'ed to nsiHTTPChannel as is done on line 8 "httpChannel = subject.QueryInterface(Ci.nsIHttpChannel);"
    //start loadContext stuff
    var loadContext;
    try {
        var interfaceRequestor = httpChannel.notificationCallbacks.QueryInterface(Ci.nsIInterfaceRequestor);
        //var DOMWindow = interfaceRequestor.getInterface(Components.interfaces.nsIDOMWindow); //not to be done anymore because: https://developer.mozilla.org/en-US/docs/Updating_extensions_for_Firefox_3.5#Getting_a_load_context_from_a_request //instead do the loadContext stuff below
        try {
            loadContext = interfaceRequestor.getInterface(Ci.nsILoadContext);
        } catch (ex) {
            try {
                loadContext = subject.loadGroup.notificationCallbacks.getInterface(Ci.nsILoadContext);
            } catch (ex2) {}
        }
    } catch (ex0) {}

if (!loadContext) {
    //no load context so dont do anything although you can run this, which is your old code
    //this probably means that its loading an ajax call or like a google ad thing
    return null;
} else {
    var contentWindow = loadContext.associatedWindow;
    if (!contentWindow) {
        //this channel does not have a window, its probably loading a resource
        //this probably means that its loading an ajax call or like a google ad thing
        return null;
    } else {
        var aDOMWindow = contentWindow.top.QueryInterface(Ci.nsIInterfaceRequestor)
            .getInterface(Ci.nsIWebNavigation)
            .QueryInterface(Ci.nsIDocShellTreeItem)
            .rootTreeItem
            .QueryInterface(Ci.nsIInterfaceRequestor)
            .getInterface(Ci.nsIDOMWindow);
        var gBrowser = aDOMWindow.gBrowser;
        var aTab = gBrowser._getTabForContentWindow(contentWindow.top); //this is the clickable tab xul element, the one found in the tab strip of the firefox window, aTab.linkedBrowser is same as browser var above //can stylize tab like aTab.style.backgroundColor = 'blue'; //can stylize the tab like aTab.style.fontColor = 'red';
        var browser = aTab.linkedBrowser; //this is the browser within the tab //this is where the example in the previous section ends
        return {
            aDOMWindow: aDOMWindow,
            gBrowser: gBrowser,
            aTab: aTab,
            browser: browser,
            contentWindow: contentWindow
        };
    }
}
//end loadContext stuff

---

}

要执行与从历史记录中删除相反的操作，您可以这样添加到历史记录中：

var historyService2=Components.classes[“@mozilla.org/browser/nav history service；1”].getService（Components.interfaces.nsIGlobalHistory2）；historyService2.addURI（Services.io.newURI（'http://www.bing.com/'），假、真、空）什么在详细的回应！三件事：1）你能修改代码格式吗？有些地方似乎不见了。2） Cookie还需要从http响应中删除。我想我们可以创建一个“httpResponseObserver”，它可以监听“http on examine response”？3） “myTabToSpoofIn”变量用于任何事情吗？啊，不，我在事故中留下了
myTabToSpoofIn
，它来自我发布的另一个示例。您只需要保持对iframe的全局引用。是的，正在进行cookie剥离。请参见固定格式，它在那里，
httpChannel.setRequestHeader（'cookie'，''，false）谢谢！答案被接受。我仍在开发Firefox扩展，但您的信息看起来非常有用。目前正在开发Chrome版本。
const {classes: Cc, Constructor: CC, interfaces: Ci, utils: Cu, results: Cr, manager: Cm} = Components;
Cu.import('resource://gre/modules/Services.jsm');

var myTabToSpoofIn = Services.wm.getMostRecentBrowser('navigator:browser').gBrowser.tabContainer[0]; //will spoof in the first tab of your browser

var httpRequestObserver = {
    observe: function (subject, topic, data) {
        var httpChannel, requestURL;

        if (topic == "http-on-modify-request") {
            httpChannel = subject.QueryInterface(Ci.nsIHttpChannel);
            var goodies = loadContextGoodies(httpChannel)
            if (goodies) {
              if (goodies.contentWindow.top == iframe.contentWindow.top) {
                httpChannel.setRequestHeader('Cookie', '', false);
              } else {
                //this page load isnt in our iframe so ignore it
              }
            }
        }
    }
};

Services.obs.addObserver(httpRequestObserver, "http-on-modify-request", false);
//Services.obs.removeObserver(httpRequestObserver, "http-on-modify-request", false); //run this on shudown of your addon otherwise the observer stags registerd







//this function gets the contentWindow and other good stuff from loadContext of httpChannel
function loadContextGoodies(httpChannel) {
    //httpChannel must be the subject of http-on-modify-request QI'ed to nsiHTTPChannel as is done on line 8 "httpChannel = subject.QueryInterface(Ci.nsIHttpChannel);"
    //start loadContext stuff
    var loadContext;
    try {
        var interfaceRequestor = httpChannel.notificationCallbacks.QueryInterface(Ci.nsIInterfaceRequestor);
        //var DOMWindow = interfaceRequestor.getInterface(Components.interfaces.nsIDOMWindow); //not to be done anymore because: https://developer.mozilla.org/en-US/docs/Updating_extensions_for_Firefox_3.5#Getting_a_load_context_from_a_request //instead do the loadContext stuff below
        try {
            loadContext = interfaceRequestor.getInterface(Ci.nsILoadContext);
        } catch (ex) {
            try {
                loadContext = subject.loadGroup.notificationCallbacks.getInterface(Ci.nsILoadContext);
            } catch (ex2) {}
        }
    } catch (ex0) {}

if (!loadContext) {
    //no load context so dont do anything although you can run this, which is your old code
    //this probably means that its loading an ajax call or like a google ad thing
    return null;
} else {
    var contentWindow = loadContext.associatedWindow;
    if (!contentWindow) {
        //this channel does not have a window, its probably loading a resource
        //this probably means that its loading an ajax call or like a google ad thing
        return null;
    } else {
        var aDOMWindow = contentWindow.top.QueryInterface(Ci.nsIInterfaceRequestor)
            .getInterface(Ci.nsIWebNavigation)
            .QueryInterface(Ci.nsIDocShellTreeItem)
            .rootTreeItem
            .QueryInterface(Ci.nsIInterfaceRequestor)
            .getInterface(Ci.nsIDOMWindow);
        var gBrowser = aDOMWindow.gBrowser;
        var aTab = gBrowser._getTabForContentWindow(contentWindow.top); //this is the clickable tab xul element, the one found in the tab strip of the firefox window, aTab.linkedBrowser is same as browser var above //can stylize tab like aTab.style.backgroundColor = 'blue'; //can stylize the tab like aTab.style.fontColor = 'red';
        var browser = aTab.linkedBrowser; //this is the browser within the tab //this is where the example in the previous section ends
        return {
            aDOMWindow: aDOMWindow,
            gBrowser: gBrowser,
            aTab: aTab,
            browser: browser,
            contentWindow: contentWindow
        };
    }
}
//end loadContext stuff