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5sing Assist

修改 5sing 歌曲页面下载按钮链接为真实歌曲链接。

  1. // ==UserScript==
  2. // @name                5sing Assist
  3. // @namespace           http://example.com
  4. // @description         修改 5sing 歌曲页面下载按钮链接为真实歌曲链接。 
  5. // @include             http://5sing.kugou.com/yc/*
  6. // @include             http://5sing.kugou.com/fc/*
  7. // @include             http://5sing.kugou.com/bz/*
  8. // @run-at              document-end
  9. // @grant               none
  10. // @author              xiofee <xiofee@gmail.com>
  11. // @version             0.2
  12. // @copyright           2014-2016,xiofee
  13. // ==/UserScript==
  14. /* History
  15.  * 2014-12-18 v0.1 首个版本 | The first version.
  16.  * 2016-06-06 v0.2 依然可用，只是改个版本号，刷个存在感。 | Still available, only changed version number.
  17.  */
  18. /** 
  19. * 
  20. *  Base64 encode / decode 
  21. * 
  22. *  @author haitao.tu 
  23. *  @date   2010-04-26 
  24. *  @email  tuhaitao@foxmail.com 
  25. * 
  26. */
  27. (function() {
  28. function Base64() {
  29.   // private property
  30.   _keyStr = 'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/=';
  31.   // public method for decoding
  32.   this.decode = function (input) {
  33.     var output = '';
  34.     var chr1,
  35.     chr2,
  36.     chr3;
  37.     var enc1,
  38.     enc2,
  39.     enc3,
  40.     enc4;
  41.     var i = 0;
  42.     input = input.replace(/[^A-Za-z0-9\+\/\=]/g, '');
  43.     while (i < input.length) {
  44.       enc1 = _keyStr.indexOf(input.charAt(i++));
  45.       enc2 = _keyStr.indexOf(input.charAt(i++));
  46.       enc3 = _keyStr.indexOf(input.charAt(i++));
  47.       enc4 = _keyStr.indexOf(input.charAt(i++));
  48.       chr1 = (enc1 << 2) | (enc2 >> 4);
  49.       chr2 = ((enc2 & 15) << 4) | (enc3 >> 2);
  50.       chr3 = ((enc3 & 3) << 6) | enc4;
  51.       output = output + String.fromCharCode(chr1);
  52.       if (enc3 != 64) {
  53.         output = output + String.fromCharCode(chr2);
  54.       }
  55.       if (enc4 != 64) {
  56.         output = output + String.fromCharCode(chr3);
  57.       }
  58.     }
  59.     output = _utf8_decode(output);
  60.     return output;
  61.   }
  62.   // private method for UTF-8 decoding
  63.  
  64.   _utf8_decode = function (utftext) {
  65.     var string = '';
  66.     var i = 0;
  67.     var c = c1 = c2 = 0;
  68.     while (i < utftext.length) {
  69.       c = utftext.charCodeAt(i);
  70.       if (c < 128) {
  71.         string += String.fromCharCode(c);
  72.         i++;
  73.       } else if ((c > 191) && (c < 224)) {
  74.         c2 = utftext.charCodeAt(i + 1);
  75.         string += String.fromCharCode(((c & 31) << 6) | (c2 & 63));
  76.         i += 2;
  77.       } else {
  78.         c2 = utftext.charCodeAt(i + 1);
  79.         c3 = utftext.charCodeAt(i + 2);
  80.         string += String.fromCharCode(((c & 15) << 12) | ((c2 & 63) << 6) | (c3 & 63));
  81.         i += 3;
  82.       }
  83.     }
  84.     return string;
  85.   }
  86. };
  87. function isListenPage() {
  88.   var _isListen = false;
  89.   // Listen mode page not use pageOptions.
  90.   if ('undefined' == typeof pageOptions) {
  91.     _isListen = true;
  92.   }
  93.   return _isListen;
  94. }
  95. function getEncryptSongInfo() {
  96.   var _info;
  97.   if (isListenPage()) {
  98.     // Listen mode page
  99.     _info = globals.ticket;
  100.   } else {
  101.     // Normal mode page
  102.     _info = pageOptions.ticket;
  103.   }
  104.   var _base64 = new Base64();
  105.   var _songObj = eval('(' + _base64.decode(_info) + ')');
  106.   return _songObj;
  107. }
  108. function getRealSongUrl() {
  109.   var _songInfo = getEncryptSongInfo();
  110.   return _songInfo.file;
  111. }
  112. function getDownloadButton() {
  113.   var _downBtn;
  114.   if (isListenPage()) {
  115.     _downBtn = document.getElementById('func_Down');
  116.   } else {
  117.     _downBtn = document.getElementsByClassName('func_icon3') [0];
  118.     _downBtn = _downBtn.getElementsByTagName('a') [0];
  119.   }
  120.   return _downBtn;
  121. }
  122. var downBtn = getDownloadButton();
  123. downBtn.href = getRealSongUrl();
  124. })();