HOOK API
此腳本不應該直接安裝，它是一個供其他腳本使用的函式庫。欲使用本函式庫，請在腳本 metadata 寫上： // @require https://update.greasyfork.org/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;
}
};
}