Javascript NSiTracableChannel，拦截HTTP流量代码

我一直在努力让这段代码在firefox上运行，这段代码是我一次又一次从firefox上获得的，我一直在谷歌上搜索答案，但运气不好。 我想做的是截取某些链接，并更改它们。 欢迎任何帮助

我得到的错误是函数语句需要一个名称开关指向观察：函数（AsObject、aTopic、aData）代码的一部分

const Cc=Components.class；
const Ci=组件。接口；
var observerService=Cc[“@mozilla.org/observer service；1”]
.getService（Ci.nsIObserverService）；
addObserver（httpRequestObserver，
“http检查响应”，错误）；
removeObserver（httpRequestObserver，
“http检查响应”）；
//--------------------------------------------------------
var httpRequestObserver=
{
观察：功能（对象、特应性、适应性）
{
if（aTopic==“http检查响应”）
{
}
},
QueryInterface:函数（aIID）
{
if（aIID.equals（Ci.nsi）||
aIID.equals（Ci.nsi））
{
归还这个；
}
抛出组件.results.NS\n接口；
}
}
//------------------------------------------------------------
函数TracingListener（）{
this.originalListener=null；
}
TracingListener.prototype=
{
onDataAvailable:函数（请求、上下文、输入流、偏移量、计数）{
this.originalListener.onDataAvailable（请求、上下文、输入流、偏移量、计数）；
},
onStartRequest：函数（请求、上下文）{
this.originalListener.onStartRequest（请求，上下文）；
},
onStopRequest：函数（请求、上下文、状态代码）{
this.originalListener.onStopRequest（请求、上下文、状态代码）；
},
QueryInterface:函数（aIID）{
if（aIID.equals（Ci.nsirstreamlistener）||
aIID.equals（Ci.nsi））{
归还这个；
}
抛出组件.results.NS\n接口；
}
}
观察：功能（对象、特应性、适应性）
{
if（aTopic==“http检查响应”）{
var newListener=new tracingstener（）；
a对象查询接口（Ci.nsTraceableChannel）；
newListener.originalListener=asobject.setNewListener（newListener）；
}
}
AsObject=AsObject.QueryInterface（Ci.nsIChannel）；
var uri=asobject.uri；
//在任何其他冲突解决程序步骤之前请求的原始URI
//和/或重定向。
var ouri=原始对象；
ch=Services.io.newChannel（“https://google.com/“，空，空）；
log（ch.toString（））；
//“[xpconnect频道]”
ch.QueryInterface（Ci.NSTraceableChannel）；
log（ch.toString（））；
//“[xpconnect-wrapped（nsISupports，nsIChannel，nsITraceableChannel）]”
log（Ci.nsIUploadChannel的ch实例）；
//真的
log（ch.toString（））；
//“[xpconnect-wrapped（nsISupports，nsIChannel，nsITraceableChannel，nsIUploadChannel）]”
//此时已知变量“ch”实现了四个给定接口。

复制粘贴此变量，它可以工作：

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

Services.obs.addObserver(httpRequestObserver, "http-on-examine-response", false);

// Services.obs.removeObserver(httpRequestObserver, "http-on-examine-response");
//--------------------------------------------------------

var httpRequestObserver = {
    observe: function(aSubject, aTopic, aData) {
        // if (aTopic == "http-on-examine-response") {} // no need for this, we added observer for `http-on-examine-response` so we know for sure this only triggers for `http-on-examine-response`
        var newListener = new TracingListener();
        aSubject.QueryInterface(Ci.nsITraceableChannel);
        newListener.originalListener = aSubject.setNewListener(newListener);
    }
    /* // what was the point of this block of code?
    ,
    QueryInterface: function(aIID) {
        if (aIID.equals(Ci.nsIObserver) || aIID.equals(Ci.nsISupports)) {
            return this;
        }
        throw Cr.NS_NOINTERFACE;
    }
    */
}

//------------------------------------------------------------

function TracingListener() {}
TracingListener.prototype = {
    onDataAvailable: function(request, context, inputStream, offset, count) {
        console.log('data available');
        this.originalListener.onDataAvailable(request, context, inputStream, offset, count);
    },
    onStartRequest: function(request, context) {
        this.originalListener.onStartRequest(request, context);
    },
    onStopRequest: function(request, context, statusCode) {
        this.originalListener.onStopRequest(request, context, statusCode);
    },
    QueryInterface: function(aIID) {
        if (aIID.equals(Ci.nsIStreamListener) || aIID.equals(Ci.nsISupports)) {
            return this;
        }
        throw Cr.NS_NOINTERFACE;
    }
}

// what the hell? this is not part of an object? why observe colon?
/*
observe: function(aSubject, aTopic, aData) {
    if (aTopic == "http-on-examine-response") {
        var newListener = new TracingListener();
        aSubject.QueryInterface(Ci.nsITraceableChannel);
        newListener.originalListener = aSubject.setNewListener(newListener);
    }
}
*/

// whats with all this junk? is it supposed to be in an observer??
/*
aSubject = aSubject.QueryInterface(Ci.nsIChannel);
var uri = aSubject.URI;
// original URI that was requested before any other resolver steps
// and/or redirects.
var ouri = aSubject.originalURI;

ch = Services.io.newChannel("https://google.com/", null, null);
console.log(ch.toString());
// "[xpconnect wrapped nsIChannel]"

ch.QueryInterface(Ci.nsITraceableChannel);
console.log(ch.toString());
// "[xpconnect wrapped (nsISupports, nsIChannel, nsITraceableChannel)]"

console.log(ch instanceof Ci.nsIUploadChannel);
// true
console.log(ch.toString());
// "[xpconnect wrapped (nsISupports, nsIChannel, nsITraceableChannel, nsIUploadChannel)]"
// the variable "ch" is known to implement the four given interfaces at this point.
*/

更新

---

有人问我如何用这个来获取响应源，所以我从中总结出一个要点：

复制粘贴这个它可以工作：

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

Services.obs.addObserver(httpRequestObserver, "http-on-examine-response", false);

// Services.obs.removeObserver(httpRequestObserver, "http-on-examine-response");
//--------------------------------------------------------

var httpRequestObserver = {
    observe: function(aSubject, aTopic, aData) {
        // if (aTopic == "http-on-examine-response") {} // no need for this, we added observer for `http-on-examine-response` so we know for sure this only triggers for `http-on-examine-response`
        var newListener = new TracingListener();
        aSubject.QueryInterface(Ci.nsITraceableChannel);
        newListener.originalListener = aSubject.setNewListener(newListener);
    }
    /* // what was the point of this block of code?
    ,
    QueryInterface: function(aIID) {
        if (aIID.equals(Ci.nsIObserver) || aIID.equals(Ci.nsISupports)) {
            return this;
        }
        throw Cr.NS_NOINTERFACE;
    }
    */
}

//------------------------------------------------------------

function TracingListener() {}
TracingListener.prototype = {
    onDataAvailable: function(request, context, inputStream, offset, count) {
        console.log('data available');
        this.originalListener.onDataAvailable(request, context, inputStream, offset, count);
    },
    onStartRequest: function(request, context) {
        this.originalListener.onStartRequest(request, context);
    },
    onStopRequest: function(request, context, statusCode) {
        this.originalListener.onStopRequest(request, context, statusCode);
    },
    QueryInterface: function(aIID) {
        if (aIID.equals(Ci.nsIStreamListener) || aIID.equals(Ci.nsISupports)) {
            return this;
        }
        throw Cr.NS_NOINTERFACE;
    }
}

// what the hell? this is not part of an object? why observe colon?
/*
observe: function(aSubject, aTopic, aData) {
    if (aTopic == "http-on-examine-response") {
        var newListener = new TracingListener();
        aSubject.QueryInterface(Ci.nsITraceableChannel);
        newListener.originalListener = aSubject.setNewListener(newListener);
    }
}
*/

// whats with all this junk? is it supposed to be in an observer??
/*
aSubject = aSubject.QueryInterface(Ci.nsIChannel);
var uri = aSubject.URI;
// original URI that was requested before any other resolver steps
// and/or redirects.
var ouri = aSubject.originalURI;

ch = Services.io.newChannel("https://google.com/", null, null);
console.log(ch.toString());
// "[xpconnect wrapped nsIChannel]"

ch.QueryInterface(Ci.nsITraceableChannel);
console.log(ch.toString());
// "[xpconnect wrapped (nsISupports, nsIChannel, nsITraceableChannel)]"

console.log(ch instanceof Ci.nsIUploadChannel);
// true
console.log(ch.toString());
// "[xpconnect wrapped (nsISupports, nsIChannel, nsITraceableChannel, nsIUploadChannel)]"
// the variable "ch" is known to implement the four given interfaces at this point.
*/

更新

---

有人问我如何用它获取响应源，所以我从中得出了一个要点：

这是一个令人恶心但仍在工作的演示：这是一个令人恶心但仍在工作的演示：