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Php Javascript Class Encode

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/* $Id: SofeeScriptDecoder.php,v 1.1 2005/06/14 06:30:14 wenlong Exp $ */ 

/** 
* Sofee Script Decoder class -    Decodes JScript/VBscript data encoded with the 
*                                MS ScriptEncoder in true crossbrowser manner. 
* 
* This script was influenced by the C version (scrdec1x.c) by Mr.Brownstone, 
* and is distributed under the terms of the BSD License. 
* 
* scrdec1x.c is copyright(c) Mr.Brownstone  
* http://www.virtualconspiracy.com/scrdec.html 
* 
* @package        SofeeFramework 
* @access        public 
* @version        $Revision: 1.1 $ 
* @author        Justin Wu  
* @homepage        http://www.sofee.cn 
* @copyright    Copyright (c) 2004-2005 Sofee Development Team.(http://www.sofee.cn) 
* @since        2005-06-14 
*/ 

define('STATE_COPY_INPUT',        100); 
define('STATE_READLEN',            101); 
define('STATE_DECODE',            102); 
define('STATE_UNESCAPE',        103); 

class SofeeScriptDecoder { 
    var $rawData = array ( 
        0x64,0x37,0x69, 0x50,0x7E,0x2C, 0x22,0x5A,0x65, 0x4A,0x45,0x72, 
        0x61,0x3A,0x5B, 0x5E,0x79,0x66, 0x5D,0x59,0x75, 0x5B,0x27,0x4C, 
        0x42,0x76,0x45, 0x60,0x63,0x76, 0x23,0x62,0x2A, 0x65,0x4D,0x43, 
        0x5F,0x51,0x33, 0x7E,0x53,0x42, 0x4F,0x52,0x20, 0x52,0x20,0x63, 
        0x7A,0x26,0x4A, 0x21,0x54,0x5A, 0x46,0x71,0x38, 0x20,0x2B,0x79, 
        0x26,0x66,0x32, 0x63,0x2A,0x57, 0x2A,0x58,0x6C, 0x76,0x7F,0x2B, 
        0x47,0x7B,0x46, 0x25,0x30,0x52, 0x2C,0x31,0x4F, 0x29,0x6C,0x3D, 
        0x69,0x49,0x70, 0x3F,0x3F,0x3F, 0x27,0x78,0x7B, 0x3F,0x3F,0x3F, 
        0x67,0x5F,0x51, 0x3F,0x3F,0x3F, 0x62,0x29,0x7A, 0x41,0x24,0x7E, 
        0x5A,0x2F,0x3B, 0x66,0x39,0x47, 0x32,0x33,0x41, 0x73,0x6F,0x77, 
        0x4D,0x21,0x56, 0x43,0x75,0x5F, 0x71,0x28,0x26, 0x39,0x42,0x78, 
        0x7C,0x46,0x6E, 0x53,0x4A,0x64, 0x48,0x5C,0x74, 0x31,0x48,0x67, 
        0x72,0x36,0x7D, 0x6E,0x4B,0x68, 0x70,0x7D,0x35, 0x49,0x5D,0x22, 
        0x3F,0x6A,0x55, 0x4B,0x50,0x3A, 0x6A,0x69,0x60, 0x2E,0x23,0x6A, 
        0x7F,0x09,0x71, 0x28,0x70,0x6F, 0x35,0x65,0x49, 0x7D,0x74,0x5C, 
        0x24,0x2C,0x5D, 0x2D,0x77,0x27, 0x54,0x44,0x59, 0x37,0x3F,0x25, 
        0x7B,0x6D,0x7C, 0x3D,0x7C,0x23, 0x6C,0x43,0x6D, 0x34,0x38,0x28, 
        0x6D,0x5E,0x31, 0x4E,0x5B,0x39, 0x2B,0x6E,0x7F, 0x30,0x57,0x36, 
        0x6F,0x4C,0x54, 0x74,0x34,0x34, 0x6B,0x72,0x62, 0x4C,0x25,0x4E, 
        0x33,0x56,0x30, 0x56,0x73,0x5E, 0x3A,0x68,0x73, 0x78,0x55,0x09, 
        0x57,0x47,0x4B, 0x77,0x32,0x61, 0x3B,0x35,0x24, 0x44,0x2E,0x4D, 
        0x2F,0x64,0x6B, 0x59,0x4F,0x44, 0x45,0x3B,0x21, 0x5C,0x2D,0x37, 
        0x68,0x41,0x53, 0x36,0x61,0x58, 0x58,0x7A,0x48, 0x79,0x22,0x2E, 
        0x09,0x60,0x50, 0x75,0x6B,0x2D, 0x38,0x4E,0x29, 0x55,0x3D,0x3F 
    ); 

    var $pick_encoding = array ( 
        1, 2, 0, 1, 2, 0, 2, 0, 0, 2, 0, 2, 1, 0, 2, 0, 
        1, 0, 2, 0, 1, 1, 2, 0, 0, 2, 1, 0, 2, 0, 0, 2, 
        1, 1, 0, 2, 0, 2, 0, 1, 0, 1, 1, 2, 0, 1, 0, 2, 
        1, 0, 2, 0, 1, 1, 2, 0, 0, 1, 1, 2, 0, 1, 0, 2 
    ); 

    var $transformed = array(); 

    /** 
    * 说明 
    * 
    * @access    private 
    * @var        string 
    */ 
    var $digits; 

     
    /** 
    * Constructor 
    * 
    * @access        public 
    * @return        void     
    */ 
    function SofeeScriptDecoder() { 
        $this->maketrans(); 
        $this->makedigits(); 
    } 
     
    /** 
    * unescape a char 
    * 
    * @access        public 
    * @param        string        [$char] 
    * @return        string 
    */ 
    function unescape($char) { 
        $escapes = "#&!*$"; 
        $escaped = "\r\n<>@"; 
        $i = 0; 

        if (ord($char) > 126) { 
            return $char; 
        } 
         
        while ($escapes[$i]) { 
            if ($escapes[$i] == $char) 
                return $escaped[$i]; 
            $i++; 
        } 
        return '?'; 
    } 
     
    /** 
    * pre-building the char-matrix 
    * 
    * @access        public 
    * @return        void     
    */ 
    function maketrans() { 
        for ($i=0; $i<3; $i++) { 
            $this->transformed[$i] = array(); 
        } 

        for ($i=31; $i<=126; $i++) { 
            for ($j=0; $j<3; $j++) { 
                $this->transformed[$j][$this->rawData[($i-31)*3 + $j]] = ($i==31) ? 9 : $i; 
            } 
        } 
    } 
     
    /** 
    * pre-building the char-matrix 
    * 
    * @access        public 
    * @return        void     
    */ 
    function makedigits() { 
        for ($i=0; $i<26; $i++) { 
            $this->digits[ord('A')+$i] = $i; 
            $this->digits[ord('a')+$i] = $i+26; 
        } 
        for ($i=0; $i<10; $i++) { 
            $this->digits[ord('0')+$i] = $i+52; 
        } 
        $this->digits[0x2b] = 62; 
        $this->digits[0x2f] = 63; 
    } 
     
    /** 
    * decode string length 
    * 
    * @access        public 
    * @param        string        [$str] 
    * @return        integer 
    */ 
    function decodeBase64($str) { 
        $val = 0; 
        $val += ($this->digits[ord($str[0])] << 2); 
        $val += ($this->digits[ord($str[1])] >> 4); 
        $val += ($this->digits[ord($str[1])] & 0xf) << 12; 
        $val += (($this->digits[ord($str[2])] >> 2) << 8); 
        $val += (($this->digits[ord($str[2])] & 0x3) << 22); 
        $val += ($this->digits[ord($str[3])] << 16); 
        return $val; 
    } 

    /** 
    * Decodes JScript/VBscript data encoded with the MS ScriptEncoder in true crossbrowser manner. 
    * 
    * @access        public 
    * @param        string        [$str] 
    * @return        string     
    */ 
    function decode($str) { 
        $marker = "#@~^"; 
        $strIdx = 0; 
        $scrIdx = 0; 
        $decIdx = 0; 
        $char = null; 
        $strLen = $scrLen = 0; 
        $state = STATE_COPY_INPUT; 
        $ret = ""; 

        while ($state) { 
            switch ($state) { 
                case STATE_COPY_INPUT : 
                    $scrIdx = strpos($str, $marker, $strIdx); 
                    if ($scrIdx !== false) { 
                        $ret .= substr($str, $strIdx, $scrIdx); 
                        $scrIdx += strlen($marker); 
                        $state = STATE_READLEN; 
                    } else { 
                        $strIdx = $strIdx==0 ? 0 : $strIdx; 
                        $ret .= substr($str, $strIdx, strlen($str)); 
                        $state = 0; 
                    } 
                    break; 
                         
                case STATE_READLEN : 
                    $strLen = substr($str, $scrIdx, 6); 
                    $scrLen = $this->decodeBase64($strLen); 
                    $scrIdx += (6 + strlen("==")); 
                    $state = STATE_DECODE; 
                    break; 
                 
                case STATE_DECODE : 
                    if (!$scrLen) { 
                        $strIdx = $scrIdx + strlen("DQgAAA==^#~@"); 
                        $decIdx = 0; 
                        $state = STATE_COPY_INPUT; 
                        break; 
                    } 
                    $char = substr($str, $scrIdx, 1); 
                    if ($char == "@") { 
                        $state = STATE_UNESCAPE; 
                    } else { 
                        if (ord($char[0]) < 0x80) { 
                            $ret .= chr($this->transformed[$this->pick_encoding[$decIdx%64]][ord($char)]); 
                            $decIdx++; 
                        } else { 
                            $ret .= $char; 
                            if ( 
                                (ord($char) > 0xa0) && (ord($char) < 0xff)    // 936 - Simplified Chinese GBK    -    0xa1-0xfe 
                                || (ord($char) > 0x80) && (ord($char) < 0xff)    // 950 - Traditional Chinese Big5    -    0x81-0xfe 
                            ) { 
                                $scrIdx++; 
                                $scrLen--; 
                                $ret .= substr($str, $scrIdx, 1); 
                            } 
                        } 
                        $scrIdx++; 
                        $scrLen--; 
                        break; 
                    } 
                     
                case STATE_UNESCAPE: 
                    $ret .= $this->unescape(substr($str, ++$scrIdx, 1)); 
                    $scrIdx++; 
                    $scrLen -= 2; 
                    $decIdx++; 
                    $state = STATE_DECODE; 
                    break; 
            } 
        } 
        return ($ret); 
    } 
} 
?> 

调用方法:
decode($str); 
?> 

test.txt文件内容:
#@~^8wIAAA==@!4Yh^@*@#@&@!DkDs+@*nunUlsG RmKh@!JYkDsn@*@#@&@!4GNz@*@#@&@!/1.kaY~smxo;CT+xJNC7ld1DbwYr@*@#@&0!x^YbWU~T+YohV}4L^O`*PP@#@&d-CMPG4N~',x;s^i@#@&7DDzPP@#@&d7K4NP',xAPzmOk7+p6(L+1O`rH/Xhs c(tSuKPKr#I@#@&78,mCO1t`nb, @#@&i7DDz, @#@&didK8L,'~xh~)1Yk7n(}4L^O`rHbm.WdG6Y (tJC:KKE*i@#@&7i8~mmO1tcKm*P @#@&i7db0~`DX2nK0Po\S_YYa]n;!+kY~"x~rEUNWk +[E,#P`@#@&d7diG(L~{P +h,(tJCDY2I;;nkY`*I@#@&ddiN@#@&id)@#@&dN@#@&d.+D;D PG8Ni@#@&N@#@&@#@&6; mObW PoY}8LmO`bNb~P@#@&ir0,`NK^;:xDRL+O3^+h+ OAHq[b, @#@&7iDnY!. P[Km!:+ YcL+D2s+s+UO~Xq9ck9#i@#@&78,+^/nPrW,`[W1;:xO mVVb~P@#@&di.Y;Mx,NW1EsnxDRCV^$r[Yi@#@&78,+Vkn~k6PvNGm;hxOR^CXDdb, @#@&7iDnY!. P[Km!:+ YcslH+./]k[Dp@#@&iN@#@&8@#@&@#@&l^+MYcB n^mG:~YKPKuh?lsG R^WsZE#I@#@&@!z/1Db2Y@*@#@&@!J4G[H@*@#@&@!z4Y:^@*Hs8AAA==^#~@



解密结果:
 
PHPSalon.com 
 
 
 
 



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