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HOOK

HOOK API

Dieses Skript sollte nicht direkt installiert werden. Es handelt sich hier um eine Bibliothek für andere Skripte, welche über folgenden Befehl in den Metadaten eines Skriptes eingebunden wird // @require https://updategreasyfork.deno.dev/scripts/40863/266172/HOOK.js 

// ==UserScript==
// @name         HOOK
// @namespace    http://www.infosec-wiki.com/
// @version      1.3
// @description  HOOK API
// @author       http://www.infosec-wiki.com/
// @match        *
// @run-at       document-start

function Hooks() {
	return {
		initEnv:function () {
			Function.prototype.hook = function (realFunc,hookFunc, run, context,funcName) {
				var _context = null; //函數上下文
				var _funcName = null; //函數名

				_context = context || window;
				//_context = context || unsafeWindow;

				_funcName = funcName || getFuncName(this);
				_context[realFunc] = this;

				if(_context[_funcName].prototype && _context[_funcName].prototype.isHooked)
				{
					console.log("Already has been hooked,unhook first");
					return false;
				}

				function getFuncName (fn) {
					// 獲取函數名稱
					var strFunc = fn.toString();
					var _regex = /function\s+(\w+)\s*\(/;
					var patten = strFunc.match(_regex);
					if (patten) {
						return patten[1];
					};
					return '';
				}

				try {
					if (run) {
						eval('_context[_funcName] = function ' + _funcName + '(){\n' +
							'var args = Array.prototype.slice.call(arguments,0);\n' +
							'var obj = this;\n' +
							'hookFunc.apply(obj,args)\n' +
							'return _context[realFunc].apply(obj,args);\n' +
							'};');
					}else {
						eval('_context[_funcName] = function ' + _funcName + '(){\n' +
							'var args = Array.prototype.slice.call(arguments,0);\n' +
							'var obj = this;\n' +
							'hookFunc.apply(obj,args)\n' +
							'};');
					}
					_context[_funcName].prototype.isHooked = true;
					return true;
				}catch (e)
				{
					console.log("Hook failed,check the params.");
					return false;
				}
			};
			Function.prototype.unhook = function (realFunc,funcName,context) {
				var _context = null;
				var _funcName = null;
				_context = context || window;
				_funcName = funcName;
				if (!_context[_funcName].prototype.isHooked)
				{
					console.log("No function is hooked on");
					return false;
				}
				_context[_funcName] = _context[realFunc];
				delete _context[realFunc];
				return true;
			};
		},
		cleanEnv:function () {
			if(Function.prototype.hasOwnProperty("hook"))
			{
				delete Function.prototype.hook;
			}
			if(Function.prototype.hasOwnProperty("unhook"))
			{
				delete Function.prototype.unhook;
			}
			return true;
		}
	};
}