JS代码混淆初步
一直以来，JS前端代码因为必须经过IE明文解析，某些加密的JS如：JScript.Encode也因为树大招风，早就被人破解了。还有些加密的手段，通过复杂的变换，改变源码，但最终都逃不脱最后的审判，像unescape,document.write,eval语句来还原。对于JS代码的保护，最好的手段就是混淆，混淆的目的就是让读懂代码的成本比直接写代码的成本高，混淆不是不可破解的，只是增加破解成本,JAVA,C#的加密都是采用混淆。这样对于非常核心的代码，混淆起不到保护代码的作用，不过JS有这样的代码么？本程序没有用到编译原理，其分词解析思想是基于mechiland(http://www.jzchen.net)的代码高亮程序，参考了蓝色经典的加密混淆专题讨论。
<HTML><HEAD><TITLE>Cunfusion</TITLE>
<META content="MSHTML 6.00.2800.1528" name=GENERATOR>
<META content="" name=Author>
<META content="" name=Keywords>
<META content="" name=Description></HEAD>
<BODY>
<SCRIPT language=JavaScript>
<!--
/**//**
** ==================================================================================================
** 类名：CLASS_CONFUSION
** 功能：JS混淆
** 示例：
---------------------------------------------------------------------------------------------------
var xx = new CLASS_CONFUSION(code);
document.getElementById("display").innerHTML = xx.confusion();
---------------------------------------------------------------------------------------------------
** 作者：ttyp
** 邮件：ttyp@21cn.com
** 日期：2006-3-20
** 版本：0.12
** ==================================================================================================
**/
function CLASS_CONFUSION(code){
//哈希表类
function Hashtable(){
this._hash = new Object();
this.add = function(key,value){
if(typeof(key)!="undefined"){
if(this.contains(key)==false){
this._hash[key]=typeof(value)=="undefined"?null:value;
return true;
} else {
return false;
}
} else {
return false;
}
}
this.remove = function(key){delete this._hash[key];}
this.count = function(){var i=0;for(var k in this._hash){i++;} return i;}
this.items = function(key){return this._hash[key];}
this.contains = function(key){return typeof(this._hash[key])!="undefined";}
this.clear = function(){for(var k in this._hash){delete this._hash[k];}}
}
function VariableMap(parent){
this.table = new Hashtable();
this.level = parent?parent.level+1:0;
this.parent= parent;
this.add = function(key,value){this.table.add(key,value)};
this.items = function(key){return this.table.items(key)};
this.count = function(){return this.table.count()};
this.contains = function(key){return this.table.contains(key);}
this.isParameter = false;
}
this._caseSensitive = true;
//字符串转换为哈希表
this.str2hashtable = function(key,cs){
var _key = key.split(/,/g);
var _hash = new Hashtable();
var _cs = true;
if(typeof(cs)=="undefined"||cs==null){
_cs = this._caseSensitive;
} else {
_cs = cs;
}
for(var i in _key){
if(_cs){
_hash.add(_key[i]);
} else {
_hash.add((_key[i]+"").toLowerCase());
}
}
return _hash;
}
//获得需要转换的代码
this._codetxt = code;
if(typeof(syntax)=="undefined"){
syntax = "";
}
this._deleteComment = false;
//是否大小写敏感
this._caseSensitive = true;
//得到关键字哈希表
this._keywords = this.str2hashtable("switch,case,delete,default,typeof,for,in,function,void,this,boolean,while,if,return,new,true,false,try,catch,throw,null,else,do,var");
this._function = this.str2hashtable("function");
this._var = "var";
this._beginBlock = "{";
this._endBlock = "}";
this._window = this.str2hashtable("alert,escape,unescape,document,parseInt,parseFloat");
//得到内建对象哈希表
this._commonObjects = this.str2hashtable("String,Number,Boolean,RegExp,Error,Math,Date,Object,Array,Global");
//得到分割字符
this._wordDelimiters= " ,.?!;:\\/<>(){}[]\"'\r\n\t=+-|*%@#$^&";
//引用字符
this._quotation = this.str2hashtable("\",'");
//行注释字符
this._lineComment = "//";
//转义字符
this._escape = "\\";
//多行引用开始
this._commentOn = "/*";
//多行引用结束
this._commentOff = "*/";
this._execute = "eval";
//引用调用字符
this._call = ".";
this._varPause = "=";
this._varContinue = ",";
//变量个数
this._varNum = 0;
this.confusion = function() {
var codeArr = new Array();
var word_index = 0;
var htmlTxt = new Array();
//得到分割字符数组(分词)
for (var i = 0; i < this._codetxt.length; i++) {
if (this._wordDelimiters.indexOf(this._codetxt.charAt(i)) == -1) { //找不到关键字
if (codeArr[word_index] == null || typeof(codeArr[word_index]) == 'undefined') {
codeArr[word_index] = "";
}
codeArr[word_index] += this._codetxt.charAt(i);
} else {
if (typeof(codeArr[word_index]) != 'undefined' && codeArr[word_index].length > 0)
word_index++;
codeArr[word_index++] = this._codetxt.charAt(i);
}
}
var quote_opened = false; //引用标记
var slash_star_comment_opened = false; //多行注释标记
var slash_slash_comment_opened = false; //单行注释标记
var line_num = 1; //行号
var quote_char = ""; //引用标记类型
var call_opened = false;
var call_string = "";
var var_opened = false;
var var_pause = false;
var function_opened = false;
var parameter_opened = false;
var var_map = new VariableMap();
var cur_var_map = var_map;
var execute_opened = false;
//按分割字，分块显示
for (var i=0; i <=word_index; i++){
//单独处理指针引用
if(call_opened&&typeof(codeArr[i])!="undefined"){
if(call_string.length==0){
if(this.isVar(codeArr[i])){
call_string +=codeArr[i];
}else{
htmlTxt[htmlTxt.length] = "[\"" + this.toHex(call_string) + "\"]";
if(codeArr[i]!=this._call){
htmlTxt[htmlTxt.length] = codeArr[i];
call_opened = false;
}
call_string = "";
}
} else {
if(!this.isVar(codeArr[i])){
htmlTxt[htmlTxt.length] = "[\"" + this.toHex(call_string) + "\"]";
if(codeArr[i]!=this._call){
htmlTxt[htmlTxt.length] = codeArr[i];
call_opened = false;
}
call_string = "";
}else{
htmlTxt[htmlTxt.length] = "[\"" + this.toHex(call_string) + "\"]";
}
}
continue;
}
//处理空行（由于转义带来）
if(typeof(codeArr[i])=="undefined"||codeArr[i].length==0){
continue;
} else if(codeArr[i]==" "){
htmlTxt[htmlTxt.length] = " ";
} else if(codeArr[i]=="\n"){
//处理换行
} else if (codeArr[i] == "\r"){
slash_slash_comment_opened = false;
quote_opened = false;
var_opened = false;
htmlTxt[htmlTxt.length] = "\r\n";
line_num++;
//处理function里的参数标记
} else if (!slash_slash_comment_opened&&!slash_star_comment_opened && !quote_opened &&this.isFunction(codeArr[i])){
htmlTxt[htmlTxt.length] = codeArr[i];
function_opened = true;
} else if (!slash_slash_comment_opened&&!slash_star_comment_opened && !quote_opened &&codeArr[i]=="("){
htmlTxt[htmlTxt.length] = codeArr[i];
if(function_opened == true){
function_opened =false;
var_opened = true;
cur_var_map = new VariableMap(cur_var_map);
cur_var_map.isParameter = true;
}
} else if (!slash_slash_comment_opened&&!slash_star_comment_opened && !quote_opened &&codeArr[i]==")"){
htmlTxt[htmlTxt.length] = codeArr[i];
//处理var a = new Class(),b=new Date();类似的问题
if(cur_var_map.isParameter){
var_opened = false;
var_pause = false;
}
} else if (!slash_slash_comment_opened&&!slash_star_comment_opened && !quote_opened &&codeArr[i]==";"){
htmlTxt[htmlTxt.length] = codeArr[i];
var_opened = false;
var_pause = false;
if(execute_opened){
execute_opened = false;
}
} else if (!slash_slash_comment_opened&&!slash_star_comment_opened && !quote_opened &&codeArr[i]==this._var){
htmlTxt[htmlTxt.length] = codeArr[i];
var_opened = true;
var_pause = false;
} else if(!slash_slash_comment_opened&&!slash_star_comment_opened && !quote_opened &&codeArr[i]==this._varPause){
htmlTxt[htmlTxt.length] = codeArr[i];
var_pause = true;
} else if(!slash_slash_comment_opened&&!slash_star_comment_opened && !quote_opened &&codeArr[i]==this._varContinue){
htmlTxt[htmlTxt.length] = codeArr[i];
var_pause = false;
} else if(!slash_slash_comment_opened&&!slash_star_comment_opened && !quote_opened &&codeArr[i]==this._beginBlock){
cur_var_map = new VariableMap(cur_var_map);
var_opened = false;
htmlTxt[htmlTxt.length] = codeArr[i];
} else if(!slash_slash_comment_opened&&!slash_star_comment_opened && !quote_opened &&codeArr[i]==this._endBlock){
cur_var_map = cur_var_map.parent;
if(cur_var_map.isParameter){
cur_var_map = cur_var_map.parent;
}
htmlTxt[htmlTxt.length] = codeArr[i];
//处理引用调用
} else if (!slash_slash_comment_opened&&!slash_star_comment_opened && !quote_opened &&codeArr[i]==this._call){
//判断引用(.)后面第一个是否为字母货_$
if(i<word_index-1){
if(this.isVar(codeArr[i+1])){
if(call_opened){
htmlTxt[htmlTxt.length] = this.toHex(call_string);
}
call_opened = true;
}else{
htmlTxt[htmlTxt.length] = this._call;
}
}else{
htmlTxt[htmlTxt.length] = this._call;
}
//处理关键字
} else if (!slash_slash_comment_opened&&!slash_star_comment_opened && !quote_opened && this.isKeyword(codeArr[i])){
htmlTxt[htmlTxt.length] = codeArr[i];
//处理eval后的字符串
} else if (!slash_slash_comment_opened&&!slash_star_comment_opened && !quote_opened && codeArr[i]==this._execute){
htmlTxt[htmlTxt.length] = "window[\"" + this.toHex(codeArr[i]) + "\"]";
execute_opened = true;
//window内置对象
} else if (!slash_slash_comment_opened&&!slash_star_comment_opened && !quote_opened && this.isWindow(codeArr[i])){
htmlTxt[htmlTxt.length] = "window[\"" + this.toHex(codeArr[i]) + "\"]";
//处理普通对象
} else if (!slash_slash_comment_opened&&!slash_star_comment_opened && !quote_opened && this.isCommonObject(codeArr[i])){
htmlTxt[htmlTxt.length] = "window[\"" + this.toHex(codeArr[i]) + "\"]";
//处理双引号（引号前不能为转义字符）
} else if (!slash_star_comment_opened&&!slash_slash_comment_opened&&this._quotation.contains(codeArr[i])){
if (quote_opened){
//是相应的引号
if(quote_char==codeArr[i]){
htmlTxt[htmlTxt.length] = codeArr[i];
quote_opened = false;
quote_char = "";
} else {
htmlTxt[htmlTxt.length] = this.toHex(codeArr[i]);
}
} else {
htmlTxt[htmlTxt.length] = codeArr[i];
quote_opened = true;
quote_char = codeArr[i];
}
//处理转义字符
} else if(codeArr[i] == this._escape){
htmlTxt[htmlTxt.length] = codeArr[i];
if(i<word_index-1){
if(codeArr[i+1].charCodeAt(0)>=32&&codeArr[i+1].charCodeAt(0)<=127){
htmlTxt[htmlTxt.length] = codeArr[i+1].substr(0,1);
htmlTxt[htmlTxt.length] = this.toHex(codeArr[i+1].substr(1));
i=i+1;
}
}
//处理多行注释的开始
} else if (!slash_slash_comment_opened && !slash_star_comment_opened&&!quote_opened&&this.isStartWith(this._commentOn,codeArr,i)){
slash_star_comment_opened = true;
htmlTxt[htmlTxt.length] = this._commentOn;
i = i + this.getSkipLength(this._commentOn);
//处理单行注释
} else if (!slash_slash_comment_opened && !slash_star_comment_opened&&!quote_opened&&this.isStartWith(this._lineComment,codeArr,i)){
slash_slash_comment_opened = true;
if(!this._deleteComment){
htmlTxt[htmlTxt.length] = this._lineComment;
}
i = i + this.getSkipLength(this._lineComment);
//处理忽略词
} else if (!slash_slash_comment_opened && !slash_star_comment_opened&&!quote_opened&&this.isStartWith(this._ignore,codeArr,i)){
slash_slash_comment_opened = true;
htmlTxt[htmlTxt.length] = this._ignore;
i = i + this.getSkipLength(this._ignore);
//处理多行注释结束
} else if (!quote_opened&&!slash_slash_comment_opened&&this.isStartWith(this._commentOff,codeArr,i)){
if (slash_star_comment_opened) {
slash_star_comment_opened = false;
if(!this._deleteComment){
htmlTxt[htmlTxt.length] = this._commentOff;
}
i = i + this.getSkipLength(this._commentOff);
}
} else {
//不是在字符串中
if(!quote_opened){
//如果不是在注释重
if(!slash_slash_comment_opened && !slash_star_comment_opened){
//不是在定义变量时
if(!var_opened){
if(this.translateVar(cur_var_map,codeArr[i])==""){
htmlTxt[htmlTxt.length] = codeArr[i];
}else{
htmlTxt[htmlTxt.length] = this.translateVar(cur_var_map,codeArr[i]);
}
}else{
//不是在暂停变量定义时
if(var_pause){
if(this.translateVar(cur_var_map,codeArr[i])==""){
htmlTxt[htmlTxt.length] = codeArr[i];
}else{
htmlTxt[htmlTxt.length] = this.translateVar(cur_var_map,codeArr[i]);
}
}else{
//变量符合命名规则，并且（变量前为空格或制表符或逗号如：var a;var a;var a,b;，还有如果是函数参数,如：function(a,b,c)
if(this.isVar(codeArr[i])&&(i>0&&codeArr[i-1]==" "||codeArr[i-1]=="\t"||codeArr[i-1]==this._varContinue||cur_var_map.isParameter)){
var name = this.getRandName();
cur_var_map.add(codeArr[i],name);
htmlTxt[htmlTxt.length] = this.translateVar(cur_var_map,codeArr[i]);
}else{
htmlTxt[htmlTxt.length] = codeArr[i];
}
}
}
//注释中
}else{
if(!this._deleteComment){
htmlTxt[htmlTxt.length] = codeArr[i];
}
}
}else{
if(execute_opened){
if(this.translateVar(cur_var_map,codeArr[i])==""){
htmlTxt[htmlTxt.length] = codeArr[i];
}else{
htmlTxt[htmlTxt.length] = this.translateVar(cur_var_map,codeArr[i]);
}
}else{
htmlTxt[htmlTxt.length] = this.toHex(codeArr[i]);
}
}
}
}
return htmlTxt.join("");
}
this.isStartWith = function(str,code,index){
if(typeof(str)!="undefined"&&str.length>0){
var cc = new Array();
for(var i=index;i<index+str.length;i++){
cc[cc.length] = code[i];
}
var c = cc.join("");
if(this._caseSensitive){
if(str.length>=code[index].length&&c.indexOf(str)==0){
return true;
}
}else{
if(str.length>=code[index].length&&c.toLowerCase().indexOf(str.toLowerCase())==0){
return true;
}
}
return false;
} else {
return false;
}
}
this.isFunction = function(val){
return this._function.contains(this._caseSensitive?val:val.toLowerCase());
}
this.isKeyword = function(val) {
return this._keywords.contains(this._caseSensitive?val:val.toLowerCase());
}
this.isWindow = function(val) {
return this._window.contains(this._caseSensitive?val:val.toLowerCase());
}
this.isCommonObject = function(val) {
return this._commonObjects.contains(this._caseSensitive?val:val.toLowerCase());
}
this.getSkipLength = function(val){
var count = 0;
for(var i=0;i<val.length;i++){
if(this._wordDelimiters.indexOf(val.charAt(i))>=0){
count++;
}
}
if(count>0){
count=count-1;
}
return count;
}
//字符串转换为16进制形式
this.toHex = function(val){
var str = new Array();
for(var i=0;i<val.length;i++){
var c = val.charCodeAt(i);
if(c>=0&&c<256){
str[str.length] = "\\x" + val.charCodeAt(i).toString(16);
}else{
str[str.length] = "\\u" + val.charCodeAt(i).toString(16);
}
}
return str.join("");
}
//获得变量随机名
this.getRandName = function(){
var style = parseInt(Math.random()*4);
var len = parseInt(Math.random()*9)+1;
var n = [];
this._varNum++;
var c = "abcdefghijklmnopqrstuvwsyzABCDEFGHIJKLMNOPQRSTUVWXYZ_$";
for(var i=0;i<len;i++){
n[n.length] = c.charAt(parseInt(Math.random()*54));
}
return n.join("")+this._varNum;
}
//是否符合变量命名字首规则
this.isVar = function(val){
return /^[a-zA-Z_\$].*$/.test(val);
}
//翻译变量，如果返回为空则不存在此变量
this.translateVar = function(node,key){
if(node.contains(key)){
return node.items(key);
}
var cn = node.parent;
while(cn!=null){
if(cn.contains(key)){
return cn.items(key);
}
cn = cn.parent;
}
return "";
}
}
function doConfusion(o){
var htmltxt = "";
if (o == null){
alert("domNode is null!");
return;
}
var _codetxt = "";
if(typeof(o)=="object"){
switch(o.tagName){
case "TEXTAREA":
case "INPUT":
_codetxt = o.value;
break;
case "DIV":
case "SPAN":
_codetxt = o.innerText;
break;
default:
_codetxt = o.innerHTML;
break;
}
}else{
_codetxt = o;
}
var _syn = new CLASS_CONFUSION(_codetxt);
htmltxt = _syn.confusion();
return htmltxt;
}
function go()
{
var code = document.getElementById("code").value;
var xx = new CLASS_CONFUSION(code);
var a = new Date();
document.getElementById("display").value = xx.confusion();
alert("共花：" + (new Date().getTime()-a.getTime()) + "ms");
}
//-->
</SCRIPT>
<TEXTAREA id=code rows=12 cols=100>
/*
这个是一个类
*/
function xx(num,str)
{
//说明
var a = num;
this.aa = a;
this.bb = function(){alert(str);}
this.cc = function(){for(var i=0;i<10;i++){document.title=i;}}
}
xx.prototype.dd= function(){
alert("dd");
}
var a = new xx(100,"hello"),b=new xx(0,"ttyp");
eval("a.aa=20");
a.bb();
b.dd();
alert(a.aa);
</TEXTAREA> <BR><INPUT onclick=go() type=button value=go><br>
<textarea id=display rows=12 cols=100>
</textarea>
</BODY></HTML>
最后，本人原则上不赞成代码混淆加密，写本程序是出于研究目的，本程序本人原创，后续的代码压缩等功能陆续加上，程序中有任何问题请指正，任何转载请写明出处。
<HTML><HEAD><TITLE>Cunfusion</TITLE><META content="MSHTML 6.00.2800.1528" name=GENERATOR><META content="" name=Author><META content="" name=Keywords><META content="" name=Description></HEAD><BODY><SCRIPT language=JavaScript>
<!--/**//** 
** ================================================================================================== ** 类名：CLASS_CONFUSION** 功能：JS混淆 ** 示例： --------------------------------------------------------------------------------------------------- var xx = new CLASS_CONFUSION(code); document.getElementById("display").innerHTML = xx.confusion(); --------------------------------------------------------------------------------------------------- ** 作者：ttyp ** 邮件：ttyp@21cn.com ** 日期：2006-3-20 ** 版本：0.12** ================================================================================================== **/ function CLASS_CONFUSION(code){ //哈希表类 function Hashtable(){ this._hash = new Object(); this.add = function(key,value){ if(typeof(key)!="undefined"){ if(this.contains(key)==false){ this._hash[key]=typeof(value)=="undefined"?null:value; return true; } else { return false; } } else { return false; } } this.remove = function(key){delete this._hash[key];} this.count = function(){var i=0;for(var k in this._hash){i++;} return i;} this.items = function(key){return this._hash[key];} this.contains = function(key){return typeof(this._hash[key])!="undefined";} this.clear = function(){for(var k in this._hash){delete this._hash[k];}} } function VariableMap(parent){ this.table = new Hashtable(); this.level = parent?parent.level+1:0; this.parent= parent; this.add = function(key,value){this.table.add(key,value)}; this.items = function(key){return this.table.items(key)}; this.count = function(){return this.table.count()}; this.contains = function(key){return this.table.contains(key);} this.isParameter = false; } this._caseSensitive = true; //字符串转换为哈希表 this.str2hashtable = function(key,cs){ var _key = key.split(/,/g); var _hash = new Hashtable(); var _cs = true; if(typeof(cs)=="undefined"||cs==null){ _cs = this._caseSensitive; } else { _cs = cs; } for(var i in _key){ if(_cs){ _hash.add(_key[i]); } else { _hash.add((_key[i]+"").toLowerCase()); } } return _hash; } //获得需要转换的代码 this._codetxt = code; if(typeof(syntax)=="undefined"){ syntax = ""; } this._deleteComment = false; //是否大小写敏感 this._caseSensitive = true; //得到关键字哈希表 this._keywords = this.str2hashtable("switch,case,delete,default,typeof,for,in,function,void,this,boolean,while,if,return,new,true,false,try,catch,throw,null,else,do,var"); this._function = this.str2hashtable("function"); this._var = "var"; this._beginBlock = "{"; this._endBlock = "}"; this._window = this.str2hashtable("alert,escape,unescape,document,parseInt,parseFloat"); //得到内建对象哈希表 this._commonObjects = this.str2hashtable("String,Number,Boolean,RegExp,Error,Math,Date,Object,Array,Global"); //得到分割字符 this._wordDelimiters= " ,.?!;:\\/<>(){}[]\"'\r\n\t=+-|*%@#$^&"; //引用字符 this._quotation = this.str2hashtable("\",'"); //行注释字符 this._lineComment = "//"; //转义字符 this._escape = "\\"; //多行引用开始 this._commentOn = "/*"; //多行引用结束 this._commentOff = "*/"; this._execute = "eval"; //引用调用字符 this._call = "."; this._varPause = "="; this._varContinue = ","; //变量个数 this._varNum = 0; this.confusion = function() { var codeArr = new Array(); var word_index = 0; var htmlTxt = new Array(); //得到分割字符数组(分词) for (var i = 0; i < this._codetxt.length; i++) { if (this._wordDelimiters.indexOf(this._codetxt.charAt(i)) == -1) { //找不到关键字 if (codeArr[word_index] == null || typeof(codeArr[word_index]) == 'undefined') { codeArr[word_index] = ""; } codeArr[word_index] += this._codetxt.charAt(i); } else { if (typeof(codeArr[word_index]) != 'undefined' && codeArr[word_index].length > 0) word_index++; codeArr[word_index++] = this._codetxt.charAt(i); } } var quote_opened = false; //引用标记 var slash_star_comment_opened = false; //多行注释标记 var slash_slash_comment_opened = false; //单行注释标记 var line_num = 1; //行号 var quote_char = ""; //引用标记类型 var call_opened = false; var call_string = ""; var var_opened = false; var var_pause = false; var function_opened = false; var parameter_opened = false; var var_map = new VariableMap(); var cur_var_map = var_map; var execute_opened = false; //按分割字，分块显示 for (var i=0; i <=word_index; i++){ //单独处理指针引用 if(call_opened&&typeof(codeArr[i])!="undefined"){ if(call_string.length==0){ if(this.isVar(codeArr[i])){ call_string +=codeArr[i]; }else{ htmlTxt[htmlTxt.length] = "[\"" + this.toHex(call_string) + "\"]"; if(codeArr[i]!=this._call){ htmlTxt[htmlTxt.length] = codeArr[i]; call_opened = false; } call_string = ""; } } else { if(!this.isVar(codeArr[i])){ htmlTxt[htmlTxt.length] = "[\"" + this.toHex(call_string) + "\"]"; if(codeArr[i]!=this._call){ htmlTxt[htmlTxt.length] = codeArr[i]; call_opened = false; } call_string = ""; }else{ htmlTxt[htmlTxt.length] = "[\"" + this.toHex(call_string) + "\"]"; } } continue; } //处理空行（由于转义带来） if(typeof(codeArr[i])=="undefined"||codeArr[i].length==0){ continue; } else if(codeArr[i]==" "){ htmlTxt[htmlTxt.length] = " "; } else if(codeArr[i]=="\n"){ //处理换行 } else if (codeArr[i] == "\r"){ slash_slash_comment_opened = false; quote_opened = false; var_opened = false; htmlTxt[htmlTxt.length] = "\r\n"; line_num++; //处理function里的参数标记 } else if (!slash_slash_comment_opened&&!slash_star_comment_opened && !quote_opened &&this.isFunction(codeArr[i])){ htmlTxt[htmlTxt.length] = codeArr[i]; function_opened = true; } else if (!slash_slash_comment_opened&&!slash_star_comment_opened && !quote_opened &&codeArr[i]=="("){ htmlTxt[htmlTxt.length] = codeArr[i]; if(function_opened == true){ function_opened =false; var_opened = true; cur_var_map = new VariableMap(cur_var_map); cur_var_map.isParameter = true; } } else if (!slash_slash_comment_opened&&!slash_star_comment_opened && !quote_opened &&codeArr[i]==")"){ htmlTxt[htmlTxt.length] = codeArr[i]; //处理var a = new Class(),b=new Date();类似的问题 if(cur_var_map.isParameter){ var_opened = false; var_pause = false; } } else if (!slash_slash_comment_opened&&!slash_star_comment_opened && !quote_opened &&codeArr[i]==";"){ htmlTxt[htmlTxt.length] = codeArr[i]; var_opened = false; var_pause = false; if(execute_opened){ execute_opened = false; } } else if (!slash_slash_comment_opened&&!slash_star_comment_opened && !quote_opened &&codeArr[i]==this._var){ htmlTxt[htmlTxt.length] = codeArr[i]; var_opened = true; var_pause = false; } else if(!slash_slash_comment_opened&&!slash_star_comment_opened && !quote_opened &&codeArr[i]==this._varPause){ htmlTxt[htmlTxt.length] = codeArr[i]; var_pause = true; } else if(!slash_slash_comment_opened&&!slash_star_comment_opened && !quote_opened &&codeArr[i]==this._varContinue){ htmlTxt[htmlTxt.length] = codeArr[i]; var_pause = false; } else if(!slash_slash_comment_opened&&!slash_star_comment_opened && !quote_opened &&codeArr[i]==this._beginBlock){ cur_var_map = new VariableMap(cur_var_map); var_opened = false; htmlTxt[htmlTxt.length] = codeArr[i]; } else if(!slash_slash_comment_opened&&!slash_star_comment_opened && !quote_opened &&codeArr[i]==this._endBlock){ cur_var_map = cur_var_map.parent; if(cur_var_map.isParameter){ cur_var_map = cur_var_map.parent; } htmlTxt[htmlTxt.length] = codeArr[i]; //处理引用调用 } else if (!slash_slash_comment_opened&&!slash_star_comment_opened && !quote_opened &&codeArr[i]==this._call){ //判断引用(.)后面第一个是否为字母货_$ if(i<word_index-1){ if(this.isVar(codeArr[i+1])){ if(call_opened){ htmlTxt[htmlTxt.length] = this.toHex(call_string); } call_opened = true; }else{ htmlTxt[htmlTxt.length] = this._call; } }else{ htmlTxt[htmlTxt.length] = this._call; } //处理关键字 } else if (!slash_slash_comment_opened&&!slash_star_comment_opened && !quote_opened && this.isKeyword(codeArr[i])){ htmlTxt[htmlTxt.length] = codeArr[i]; //处理eval后的字符串 } else if (!slash_slash_comment_opened&&!slash_star_comment_opened && !quote_opened && codeArr[i]==this._execute){ htmlTxt[htmlTxt.length] = "window[\"" + this.toHex(codeArr[i]) + "\"]"; execute_opened = true; //window内置对象 } else if (!slash_slash_comment_opened&&!slash_star_comment_opened && !quote_opened && this.isWindow(codeArr[i])){ htmlTxt[htmlTxt.length] = "window[\"" + this.toHex(codeArr[i]) + "\"]"; //处理普通对象 } else if (!slash_slash_comment_opened&&!slash_star_comment_opened && !quote_opened && this.isCommonObject(codeArr[i])){ htmlTxt[htmlTxt.length] = "window[\"" + this.toHex(codeArr[i]) + "\"]"; //处理双引号（引号前不能为转义字符） } else if (!slash_star_comment_opened&&!slash_slash_comment_opened&&this._quotation.contains(codeArr[i])){ if (quote_opened){ //是相应的引号 if(quote_char==codeArr[i]){ htmlTxt[htmlTxt.length] = codeArr[i]; quote_opened = false; quote_char = ""; } else { htmlTxt[htmlTxt.length] = this.toHex(codeArr[i]); } } else { htmlTxt[htmlTxt.length] = codeArr[i]; quote_opened = true; quote_char = codeArr[i]; } //处理转义字符 } else if(codeArr[i] == this._escape){ htmlTxt[htmlTxt.length] = codeArr[i]; if(i<word_index-1){ if(codeArr[i+1].charCodeAt(0)>=32&&codeArr[i+1].charCodeAt(0)<=127){ htmlTxt[htmlTxt.length] = codeArr[i+1].substr(0,1); htmlTxt[htmlTxt.length] = this.toHex(codeArr[i+1].substr(1)); i=i+1; } } //处理多行注释的开始 } else if (!slash_slash_comment_opened && !slash_star_comment_opened&&!quote_opened&&this.isStartWith(this._commentOn,codeArr,i)){ slash_star_comment_opened = true; htmlTxt[htmlTxt.length] = this._commentOn; i = i + this.getSkipLength(this._commentOn); //处理单行注释 } else if (!slash_slash_comment_opened && !slash_star_comment_opened&&!quote_opened&&this.isStartWith(this._lineComment,codeArr,i)){ slash_slash_comment_opened = true; if(!this._deleteComment){ htmlTxt[htmlTxt.length] = this._lineComment; } i = i + this.getSkipLength(this._lineComment); //处理忽略词 } else if (!slash_slash_comment_opened && !slash_star_comment_opened&&!quote_opened&&this.isStartWith(this._ignore,codeArr,i)){ slash_slash_comment_opened = true; htmlTxt[htmlTxt.length] = this._ignore; i = i + this.getSkipLength(this._ignore); //处理多行注释结束 } else if (!quote_opened&&!slash_slash_comment_opened&&this.isStartWith(this._commentOff,codeArr,i)){ if (slash_star_comment_opened) { slash_star_comment_opened = false; if(!this._deleteComment){ htmlTxt[htmlTxt.length] = this._commentOff; } i = i + this.getSkipLength(this._commentOff); } } else { //不是在字符串中 if(!quote_opened){ //如果不是在注释重 if(!slash_slash_comment_opened && !slash_star_comment_opened){ //不是在定义变量时 if(!var_opened){ if(this.translateVar(cur_var_map,codeArr[i])==""){ htmlTxt[htmlTxt.length] = codeArr[i]; }else{ htmlTxt[htmlTxt.length] = this.translateVar(cur_var_map,codeArr[i]); } }else{ //不是在暂停变量定义时 if(var_pause){ if(this.translateVar(cur_var_map,codeArr[i])==""){ htmlTxt[htmlTxt.length] = codeArr[i]; }else{ htmlTxt[htmlTxt.length] = this.translateVar(cur_var_map,codeArr[i]); } }else{ //变量符合命名规则，并且（变量前为空格或制表符或逗号如：var a;var a;var a,b;，还有如果是函数参数,如：function(a,b,c) if(this.isVar(codeArr[i])&&(i>0&&codeArr[i-1]==" "||codeArr[i-1]=="\t"||codeArr[i-1]==this._varContinue||cur_var_map.isParameter)){ var name = this.getRandName(); cur_var_map.add(codeArr[i],name); htmlTxt[htmlTxt.length] = this.translateVar(cur_var_map,codeArr[i]); }else{ htmlTxt[htmlTxt.length] = codeArr[i]; } } } //注释中 }else{ if(!this._deleteComment){ htmlTxt[htmlTxt.length] = codeArr[i]; } } }else{ if(execute_opened){ if(this.translateVar(cur_var_map,codeArr[i])==""){ htmlTxt[htmlTxt.length] = codeArr[i]; }else{ htmlTxt[htmlTxt.length] = this.translateVar(cur_var_map,codeArr[i]); } }else{ htmlTxt[htmlTxt.length] = this.toHex(codeArr[i]); } } } } return htmlTxt.join(""); } this.isStartWith = function(str,code,index){ if(typeof(str)!="undefined"&&str.length>0){ var cc = new Array(); for(var i=index;i<index+str.length;i++){ cc[cc.length] = code[i]; } var c = cc.join(""); if(this._caseSensitive){ if(str.length>=code[index].length&&c.indexOf(str)==0){ return true; } }else{ if(str.length>=code[index].length&&c.toLowerCase().indexOf(str.toLowerCase())==0){ return true; } } return false; } else { return false; } } this.isFunction = function(val){ return this._function.contains(this._caseSensitive?val:val.toLowerCase()); } this.isKeyword = function(val) { return this._keywords.contains(this._caseSensitive?val:val.toLowerCase()); } this.isWindow = function(val) { return this._window.contains(this._caseSensitive?val:val.toLowerCase()); } this.isCommonObject = function(val) { return this._commonObjects.contains(this._caseSensitive?val:val.toLowerCase()); } this.getSkipLength = function(val){ var count = 0; for(var i=0;i<val.length;i++){ if(this._wordDelimiters.indexOf(val.charAt(i))>=0){ count++; } } if(count>0){ count=count-1; } return count; } //字符串转换为16进制形式 this.toHex = function(val){ var str = new Array(); for(var i=0;i<val.length;i++){ var c = val.charCodeAt(i); if(c>=0&&c<256){ str[str.length] = "\\x" + val.charCodeAt(i).toString(16); }else{ str[str.length] = "\\u" + val.charCodeAt(i).toString(16); } } return str.join(""); } //获得变量随机名 this.getRandName = function(){ var style = parseInt(Math.random()*4); var len = parseInt(Math.random()*9)+1; var n = []; this._varNum++; var c = "abcdefghijklmnopqrstuvwsyzABCDEFGHIJKLMNOPQRSTUVWXYZ_$"; for(var i=0;i<len;i++){ n[n.length] = c.charAt(parseInt(Math.random()*54)); } return n.join("")+this._varNum; } //是否符合变量命名字首规则 this.isVar = function(val){ return /^[a-zA-Z_\$].*$/.test(val); } //翻译变量，如果返回为空则不存在此变量 this.translateVar = function(node,key){ if(node.contains(key)){ return node.items(key); } var cn = node.parent; while(cn!=null){ if(cn.contains(key)){ return cn.items(key); } cn = cn.parent; } return ""; }}function doConfusion(o){ var htmltxt = ""; if (o == null){ alert("domNode is null!"); return; } var _codetxt = ""; if(typeof(o)=="object"){ switch(o.tagName){ case "TEXTAREA": case "INPUT": _codetxt = o.value; break; case "DIV": case "SPAN": _codetxt = o.innerText; break; default: _codetxt = o.innerHTML; break; } }else{ _codetxt = o; } var _syn = new CLASS_CONFUSION(_codetxt); htmltxt = _syn.confusion(); return htmltxt;}function go(){ var code = document.getElementById("code").value; var xx = new CLASS_CONFUSION(code); var a = new Date(); document.getElementById("display").value = xx.confusion(); alert("共花：" + (new Date().getTime()-a.getTime()) + "ms");}//--></SCRIPT><TEXTAREA id=code rows=12 cols=100>/*这个是一个类*/function xx(num,str){//说明var a = num;this.aa = a;this.bb = function(){alert(str);}this.cc = function(){for(var i=0;i<10;i++){document.title=i;}}}xx.prototype.dd= function(){alert("dd");}var a = new xx(100,"hello"),b=new xx(0,"ttyp");eval("a.aa=20");a.bb();b.dd();alert(a.aa);</TEXTAREA> <BR><INPUT onclick=go() type=button value=go><br><textarea id=display rows=12 cols=100></textarea></BODY></HTML>最后，本人原则上不赞成代码混淆加密，写本程序是出于研究目的，本程序本人原创，后续的代码压缩等功能陆续加上，程序中有任何问题请指正，任何转载请写明出处。
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