计算机学生的Fif口语高分教程

众所周知，Fif口语几乎是每个学生在英语课上不可逃脱的噩梦，比如我。

那么身为一个计算机学生，是老老实实去练习口语呢，还是从计算机的角度来解决问题。

首先分析问题，你打算在这门口语课上得到到什么，练习口语、口语技巧，还是花最少的时间速通课程。最后是前者，那么口语还是得花费大量时间认真学习。

问题拆解

Fif作为一个口语练习平台，给定一段文本，用户朗读文本，平台将录音和内置录音得到分数。对于一个课程通常分别四个部分，每个部分有多个文本，只有多个文本完成之后，才能获得这部分整体的评分。

根据这个问题，我们理所应当的想到，

• 能不能直接修改得分
• 目前能不能文本生成语音技术来解决录音问题

问题解决

1. 通过Fiddler监听请求修改请求内容

在尝试对FIF的请求进行抓包之后，发现成绩都是明文传输，不需要解包之类，于是尝试API工具直接发送请求，发现由于参数众多并不能单纯通过调用几个api来解决。于是只能请出http代理工具Fiddler，修改每次的请求.

在Rules里面Custom rules定义规则

import System;
import System.Windows.Forms;
import Fiddler;

// INTRODUCTION
//

// JScript.NET Reference
// http://fiddler2.com/r/?msdnjsnet
//
// FiddlerScript Reference
// http://fiddler2.com/r/?fiddlerscriptcookbook

class Handlers
{
	// *****************
	//
	// This is the Handlers class. Pretty much everything you ever add to FiddlerScript
	// belongs right inside here, or inside one of the already-existing functions below.
	//
	// *****************

	// The following snippet demonstrates a custom-bound column for the Web Sessions list.
	// See http://fiddler2.com/r/?fiddlercolumns for more info
	
	public static RulesOption("Hide 304s")
	BindPref("fiddlerscript.rules.Hide304s")
	var m_Hide304s: boolean = false;

	// Cause Fiddler Classic to override the Accept-Language header with one of the defined values
	public static RulesOption("Request &Japanese Content")
	var m_Japanese: boolean = false;

	// Automatic Authentication
	public static RulesOption("&Automatically Authenticate")
	BindPref("fiddlerscript.rules.AutoAuth")
	var m_AutoAuth: boolean = false;

	// Cause Fiddler Classic to override the User-Agent header with one of the defined values
	// The page http://browserscope2.org/browse?category=selectors&ua=Mobile%20Safari is a good place to find updated versions of these
	RulesString("&User-Agents", true) 
	BindPref("fiddlerscript.ephemeral.UserAgentString")
	RulesStringValue(0,"Netscape &3", "Mozilla/3.0 (Win95; I)")
	RulesStringValue(1,"WinPhone8.1", "Mozilla/5.0 (Mobile; Windows Phone 8.1; Android 4.0; ARM; Trident/7.0; Touch; rv:11.0; IEMobile/11.0; NOKIA; Lumia 520) like iPhone OS 7_0_3 Mac OS X AppleWebKit/537 (KHTML, like Gecko) Mobile Safari/537")
	RulesStringValue(2,"&Safari5 (Win7)", "Mozilla/5.0 (Windows; U; Windows NT 6.1; en-US) AppleWebKit/533.21.1 (KHTML, like Gecko) Version/5.0.5 Safari/533.21.1")
	RulesStringValue(3,"Safari9 (Mac)", "Mozilla/5.0 (Macintosh; Intel Mac OS X 10_11) AppleWebKit/601.1.56 (KHTML, like Gecko) Version/9.0 Safari/601.1.56")
	RulesStringValue(4,"iPad", "Mozilla/5.0 (iPad; CPU OS 8_3 like Mac OS X) AppleWebKit/600.1.4 (KHTML, like Gecko) Version/8.0 Mobile/12F5027d Safari/600.1.4")
	RulesStringValue(5,"iPhone6", "Mozilla/5.0 (iPhone; CPU iPhone OS 8_3 like Mac OS X) AppleWebKit/600.1.4 (KHTML, like Gecko) Version/8.0 Mobile/12F70 Safari/600.1.4")
	RulesStringValue(6,"IE &6 (XPSP2)", "Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1; SV1)")
	RulesStringValue(7,"IE &7 (Vista)", "Mozilla/4.0 (compatible; MSIE 7.0; Windows NT 6.0; SLCC1)")
	RulesStringValue(8,"IE 8 (Win2k3 x64)", "Mozilla/4.0 (compatible; MSIE 8.0; Windows NT 5.2; WOW64; Trident/4.0)")
	RulesStringValue(9,"IE &8 (Win7)", "Mozilla/4.0 (compatible; MSIE 8.0; Windows NT 6.1; Trident/4.0)")
	RulesStringValue(10,"IE 9 (Win7)", "Mozilla/5.0 (compatible; MSIE 9.0; Windows NT 6.1; Trident/5.0)")
	RulesStringValue(11,"IE 10 (Win8)", "Mozilla/5.0 (compatible; MSIE 10.0; Windows NT 6.2; WOW64; Trident/6.0)")
	RulesStringValue(12,"IE 11 (Surface2)", "Mozilla/5.0 (Windows NT 6.3; ARM; Trident/7.0; Touch; rv:11.0) like Gecko")
	RulesStringValue(13,"IE 11 (Win8.1)", "Mozilla/5.0 (Windows NT 6.3; WOW64; Trident/7.0; rv:11.0) like Gecko")
	RulesStringValue(14,"Edge (Win10)", "Mozilla/5.0 (Windows NT 10.0) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/46.0.2486.0 Safari/537.36 Edge/13.11082")
	RulesStringValue(15,"&Opera", "Opera/9.80 (Windows NT 6.2; WOW64) Presto/2.12.388 Version/12.17")
	RulesStringValue(16,"&Firefox 3.6", "Mozilla/5.0 (Windows; U; Windows NT 6.1; en-US; rv:1.9.2.7) Gecko/20100625 Firefox/3.6.7")
	RulesStringValue(17,"&Firefox 43", "Mozilla/5.0 (Windows NT 6.3; WOW64; rv:43.0) Gecko/20100101 Firefox/43.0")
	RulesStringValue(18,"&Firefox Phone", "Mozilla/5.0 (Mobile; rv:18.0) Gecko/18.0 Firefox/18.0")
	RulesStringValue(19,"&Firefox (Mac)", "Mozilla/5.0 (Macintosh; Intel Mac OS X 10.8; rv:24.0) Gecko/20100101 Firefox/24.0")
	RulesStringValue(20,"Chrome (Win)", "Mozilla/5.0 (Windows NT 6.3; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/48.0.2564.48 Safari/537.36")
	RulesStringValue(21,"Chrome (Android)", "Mozilla/5.0 (Linux; Android 5.1.1; Nexus 5 Build/LMY48B) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/43.0.2357.78 Mobile Safari/537.36")
	RulesStringValue(22,"ChromeBook", "Mozilla/5.0 (X11; CrOS x86_64 6680.52.0) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/41.0.2272.74 Safari/537.36")
	RulesStringValue(23,"GoogleBot Crawler", "Mozilla/5.0 (compatible; Googlebot/2.1; +http://www.google.com/bot.html)")
	RulesStringValue(24,"Kindle Fire (Silk)", "Mozilla/5.0 (Macintosh; U; Intel Mac OS X 10_6_3; en-us; Silk/1.0.22.79_10013310) AppleWebKit/533.16 (KHTML, like Gecko) Version/5.0 Safari/533.16 Silk-Accelerated=true")
	RulesStringValue(25,"&Custom...", "%CUSTOM%")
	public static var sUA: String = null;

	// Cause Fiddler Classic to delay HTTP traffic to simulate typical 56k modem conditions
	public static RulesOption("Simulate &Modem Speeds", "Per&formance")
	var m_SimulateModem: boolean = false;

	// Removes HTTP-caching related headers and specifies "no-cache" on requests and responses
	public static RulesOption("&Disable Caching", "Per&formance")
	var m_DisableCaching: boolean = false;

	public static RulesOption("Cache Always &Fresh", "Per&formance")
	var m_AlwaysFresh: boolean = false;
        
	// Force a manual reload of the script file.  Resets all
	// RulesOption variables to their defaults.
	public static ToolsAction("Reset Script")
	function DoManualReload() { 
		FiddlerObject.ReloadScript();
	}

	public static ContextAction("Decode Selected Sessions")
	function DoRemoveEncoding(oSessions: Session[]) {
		for (var x:int = 0; x < oSessions.Length; x++){
			oSessions[x].utilDecodeRequest();
			oSessions[x].utilDecodeResponse();
		}
		UI.actUpdateInspector(true,true);
	}

	static function OnBeforeRequest(oSession: Session) {
		// Sample Rule: Color ASPX requests in RED
		// if (oSession.uriContains(".aspx")) {	oSession["ui-color"] = "red";	}

		// Sample Rule: Flag POSTs to fiddler2.com in italics
		// if (oSession.HostnameIs("www.fiddler2.com") && oSession.HTTPMethodIs("POST")) {	oSession["ui-italic"] = "yup";	}

		// Sample Rule: Break requests for URLs containing "/sandbox/"
		// if (oSession.uriContains("/sandbox/")) {
		//     oSession.oFlags["x-breakrequest"] = "yup";	// Existence of the x-breakrequest flag creates a breakpoint; the "yup" value is unimportant.
		// }

		if ((null != gs_ReplaceToken) && (oSession.url.indexOf(gs_ReplaceToken)>-1)) {   // Case sensitive
			oSession.url = oSession.url.Replace(gs_ReplaceToken, gs_ReplaceTokenWith); 
		}
		if ((null != gs_OverridenHost) && (oSession.host.toLowerCase() == gs_OverridenHost)) {
			oSession["x-overridehost"] = gs_OverrideHostWith; 
		}

		if ((null!=bpRequestURI) && oSession.uriContains(bpRequestURI)) {
			oSession["x-breakrequest"]="uri";
		}

		if ((null!=bpMethod) && (oSession.HTTPMethodIs(bpMethod))) {
			oSession["x-breakrequest"]="method";
		}

		if ((null!=uiBoldURI) && oSession.uriContains(uiBoldURI)) {
			oSession["ui-bold"]="QuickExec";
		}

		if (m_SimulateModem) {
			// Delay sends by 300ms per KB uploaded.
			oSession["request-trickle-delay"] = "300"; 
			// Delay receives by 150ms per KB downloaded.
			oSession["response-trickle-delay"] = "150"; 
		}

		if (m_DisableCaching) {
			oSession.oRequest.headers.Remove("If-None-Match");
			oSession.oRequest.headers.Remove("If-Modified-Since");
			oSession.oRequest["Pragma"] = "no-cache";
		}

		// User-Agent Overrides
		if (null != sUA) {
			oSession.oRequest["User-Agent"] = sUA; 
		}

		if (m_Japanese) {
			oSession.oRequest["Accept-Language"] = "ja";
		}

		if (m_AutoAuth) {
			// Automatically respond to any authentication challenges using the 
			// current Fiddler Classic user's credentials. You can change (default)
			// to a domain\\username:password string if preferred.
			//
			// WARNING: This setting poses a security risk if remote 
			// connections are permitted!
			oSession["X-AutoAuth"] = "(default)";
		}

		if (m_AlwaysFresh && (oSession.oRequest.headers.Exists("If-Modified-Since") || oSession.oRequest.headers.Exists("If-None-Match")))
		{
			oSession.utilCreateResponseAndBypassServer();
			oSession.responseCode = 304;
			oSession["ui-backcolor"] = "Lavender";
		}
		
		if (oSession.RequestMethod == "POST" && oSession.fullUrl.Contains("https://moral.fifedu.com/kyxl-app-challenge/evaluation/submitChallengeResults")) {
			
			oSession["ui-color"] ="orange";
			// 提取请求的 Body 数据
			//var requestBody = System.Text.Encoding.UTF8.GetString(oSession.requestBodyBytes);
			
			// 提取请求的 Body 数据
			var requestBody = oSession.GetRequestBodyAsString();
				
			FiddlerApplication.Log.LogString("=========" + requestBody);

			
			// 将 requestBody 解码
			var decodedRequestBody = decodeURIComponent(requestBody);
			
			// 编码字符串
			var encodedString = encodeURIComponent(decodedRequestBody);

	
			// 解析 JSON 数据
			var json = Fiddler.WebFormats.JSON.JsonDecode(decodedRequestBody);
			var requestObj = json.JSONObject;
			//FiddlerApplication.Log.LogString("decodedRequestBody=========" + decodedRequestBody);
			
			// 提取 resultJson 后面的内容
			var startIndex = decodedRequestBody.indexOf("resultJson=") + "resultJson=".length;
			var endIndex = decodedRequestBody.length;
			var resultJsonString = decodedRequestBody.substring(startIndex, endIndex);

			FiddlerApplication.Log.LogString("resultJsonString=========" + resultJsonString);

			// 解析 resultJson 字符串为 JSON 对象
			var resultJson = Fiddler.WebFormats.JSON.JsonDecode(resultJsonString);
		
			
			for (var i = 0; i < resultJson.JSONObject.Count; i++) {
				resultJson.JSONObject[i]["score"] = Math.floor(Math.random() * (100 - 98 + 1)) + 96;
				resultJson.JSONObject[i]["semantic"] = Math.floor(Math.random() * (100 - 98 + 1)) + 92;
				resultJson.JSONObject[i]["accuracy"] = Math.floor(Math.random() * (100 - 98 + 1)) + 92;
				resultJson.JSONObject[i]["fluency"] = Math.floor(Math.random() * (100 - 98 + 1)) + 92;
				resultJson.JSONObject[i]["complete"] = 100;
				resultJson.JSONObject[i]["learn_time"] = Math.floor(Math.random() * (150 - 85 + 1)) + 88;
			}

			//resultJson.JSONObject[1]["score"] = Math.floor(Math.random()*(100-98+1))+98;
			//resultJson.JSONObject[1]["semantic"] = Math.floor(Math.random()*(100-98+1))+98;
			//resultJson.JSONObject[1]["accuracy"] = Math.floor(Math.random()*(100-98+1))+98;
			//resultJson.JSONObject[1]["fluency"] = Math.floor(Math.random()*(100-98+1))+98;
			//resultJson.JSONObject[1]["complete"] = 100;
			//resultJson.JSONObject[1]["learn_time"] = Math.floor(Math.random()*(150-85+1))+85;
			
			// 将JSON对象转换为字符串
			var resultJsonStringFinal = Fiddler.WebFormats.JSON.JsonEncode(resultJson.JSONObject);
			FiddlerApplication.Log.LogString("=========resultJsonString" + resultJsonString);

			// 替换原始的 resultJson 字符串
			var modifiedRequestBody = decodedRequestBody.replace(resultJsonString, encodeURIComponent(resultJsonStringFinal));
			
			
			FiddlerApplication.Log.LogString("=========" + modifiedRequestBody);

			
			// 使用 utilSetRequestBody 方法设置修改后的请求正文内容
			oSession.utilSetRequestBody(modifiedRequestBody);
		
		}
		
	}


	static function OnPeekAtResponseHeaders(oSession: Session) {
		//FiddlerApplication.Log.LogFormat("Session {0}: Response header peek shows status is {1}", oSession.id, oSession.responseCode);
		if (m_DisableCaching) {
			oSession.oResponse.headers.Remove("Expires");
			oSession.oResponse["Cache-Control"] = "no-cache";
		}

		if ((bpStatus>0) && (oSession.responseCode == bpStatus)) {
			oSession["x-breakresponse"]="status";
			oSession.bBufferResponse = true;
		}
        
		if ((null!=bpResponseURI) && oSession.uriContains(bpResponseURI)) {
			oSession["x-breakresponse"]="uri";
			oSession.bBufferResponse = true;
		}

	}

	// OnBeforeResponse 方法用于拦截响应
	static function OnBeforeResponse(oSession: Session) {
		if (m_Hide304s && oSession.responseCode == 304) {
			oSession["ui-hide"] = "true";
		}
	}



    // The Main() function runs everytime your FiddlerScript compiles
	static function Main() {
		var today: Date = new Date();
		FiddlerObject.StatusText = " CustomRules.js was loaded at: " + today;

	
	}

	// These static variables are used for simple breakpointing & other QuickExec rules 
	BindPref("fiddlerscript.ephemeral.bpRequestURI")
	public static var bpRequestURI:String = null;

	BindPref("fiddlerscript.ephemeral.bpResponseURI")
	public static var bpResponseURI:String = null;

	BindPref("fiddlerscript.ephemeral.bpMethod")
	public static var bpMethod: String = null;

	static var bpStatus:int = -1;
	static var uiBoldURI: String = null;
	static var gs_ReplaceToken: String = null;
	static var gs_ReplaceTokenWith: String = null;
	static var gs_OverridenHost: String = null;
	static var gs_OverrideHostWith: String = null;

	// The OnExecAction function is called by either the QuickExec box in the Fiddler Classic window,
	// or by the ExecAction.exe command line utility.
	static function OnExecAction(sParams: String[]): Boolean {

		FiddlerObject.StatusText = "ExecAction: " + sParams[0];

		var sAction = sParams[0].toLowerCase();
		switch (sAction) {
			case "bold":
				if (sParams.Length<2) {uiBoldURI=null; FiddlerObject.StatusText="Bolding cleared"; return false;}
				uiBoldURI = sParams[1]; FiddlerObject.StatusText="Bolding requests for " + uiBoldURI;
				return true;
			case "bp":
				FiddlerObject.alert("bpu = breakpoint request for uri\nbpm = breakpoint request method\nbps=breakpoint response status\nbpafter = breakpoint response for URI");
				return true;
			case "bps":
				if (sParams.Length<2) {bpStatus=-1; FiddlerObject.StatusText="Response Status breakpoint cleared"; return false;}
				bpStatus = parseInt(sParams[1]); FiddlerObject.StatusText="Response status breakpoint for " + sParams[1];
				return true;
			case "bpv":
			case "bpm":
				if (sParams.Length<2) {bpMethod=null; FiddlerObject.StatusText="Request Method breakpoint cleared"; return false;}
				bpMethod = sParams[1].toUpperCase(); FiddlerObject.StatusText="Request Method breakpoint for " + bpMethod;
				return true;
			case "bpu":
				if (sParams.Length<2) {bpRequestURI=null; FiddlerObject.StatusText="RequestURI breakpoint cleared"; return false;}
				bpRequestURI = sParams[1]; 
				FiddlerObject.StatusText="RequestURI breakpoint for "+sParams[1];
				return true;
			case "bpa":
			case "bpafter":
				if (sParams.Length<2) {bpResponseURI=null; FiddlerObject.StatusText="ResponseURI breakpoint cleared"; return false;}
				bpResponseURI = sParams[1]; 
				FiddlerObject.StatusText="ResponseURI breakpoint for "+sParams[1];
				return true;
			case "overridehost":
				if (sParams.Length<3) {gs_OverridenHost=null; FiddlerObject.StatusText="Host Override cleared"; return false;}
				gs_OverridenHost = sParams[1].toLowerCase();
				gs_OverrideHostWith = sParams[2];
				FiddlerObject.StatusText="Connecting to [" + gs_OverrideHostWith + "] for requests to [" + gs_OverridenHost + "]";
				return true;
			case "urlreplace":
				if (sParams.Length<3) {gs_ReplaceToken=null; FiddlerObject.StatusText="URL Replacement cleared"; return false;}
				gs_ReplaceToken = sParams[1];
				gs_ReplaceTokenWith = sParams[2].Replace(" ", "%20");  // Simple helper
				FiddlerObject.StatusText="Replacing [" + gs_ReplaceToken + "] in URIs with [" + gs_ReplaceTokenWith + "]";
				return true;
			case "allbut":
			case "keeponly":
				if (sParams.Length<2) { FiddlerObject.StatusText="Please specify Content-Type to retain during wipe."; return false;}
				UI.actSelectSessionsWithResponseHeaderValue("Content-Type", sParams[1]);
				UI.actRemoveUnselectedSessions();
				UI.lvSessions.SelectedItems.Clear();
				FiddlerObject.StatusText="Removed all but Content-Type: " + sParams[1];
				return true;
			case "stop":
				UI.actDetachProxy();
				return true;
			case "start":
				UI.actAttachProxy();
				return true;
			case "cls":
			case "clear":
				UI.actRemoveAllSessions();
				return true;
			case "g":
			case "go":
				UI.actResumeAllSessions();
				return true;
			case "goto":
				if (sParams.Length != 2) return false;
				Utilities.LaunchHyperlink("http://www.google.com/search?hl=en&btnI=I%27m+Feeling+Lucky&q=" + Utilities.UrlEncode(sParams[1]));
				return true;
			case "help":
				Utilities.LaunchHyperlink("http://fiddler2.com/r/?quickexec");
				return true;
			case "hide":
				UI.actMinimizeToTray();
				return true;
			case "log":
				FiddlerApplication.Log.LogString((sParams.Length<2) ? "User couldn't think of anything to say..." : sParams[1]);
				return true;
			case "nuke":
				UI.actClearWinINETCache();
				UI.actClearWinINETCookies(); 
				return true;
			case "screenshot":
				UI.actCaptureScreenshot(false);
				return true;
			case "show":
				UI.actRestoreWindow();
				return true;
			case "tail":
				if (sParams.Length<2) { FiddlerObject.StatusText="Please specify # of sessions to trim the session list to."; return false;}
				UI.TrimSessionList(int.Parse(sParams[1]));
				return true;
			case "quit":
				UI.actExit();
				return true;
			case "dump":
				UI.actSelectAll();
				UI.actSaveSessionsToZip(CONFIG.GetPath("Captures") + "dump.saz");
				UI.actRemoveAllSessions();
				FiddlerObject.StatusText = "Dumped all sessions to " + CONFIG.GetPath("Captures") + "dump.saz";
				return true;

			default:
				if (sAction.StartsWith("http") || sAction.StartsWith("www.")) {
					System.Diagnostics.Process.Start(sParams[0]);
					return true;
				}
				else
				{
					FiddlerObject.StatusText = "Requested ExecAction: '" + sAction + "' not found. Type HELP to learn more.";
					return false;
				}
		}
	}
}

最后完成目标

通过Ai的方式伪造录音

参考： https://github.com/Aurorabili/fuckfif/

后记

分数的高低不由系统口语分数决定，而由老师的熟悉度决定！