MikeCoder / hexo-blog-encrypt

function decryptAES (password) {

  try {

    var decryptionError = String(document.getElementById('decryptionError').innerHTML);

    var noContentError = String(document.getElementById('noContentError').innerHTML);

  } catch (e) {

    decryptionError = 'Incorrect Password!';

    noContentError = 'No content to display!';

  }

  try {

    let content = CryptoJS.AES.decrypt(document.getElementById('encrypt-blog').innerHTML.trim(), password);

    content = content.toString(CryptoJS.enc.Utf8);

    content = decodeBase64(content);

    content = unescape(content);

    if (content === '') {

      throw new Error(noContentError); // ???

    } else {

      document.getElementById('encrypt-blog').style.display = 'inline';

      document.getElementById('encrypt-blog').innerHTML = '';

      // Use jquery to load some js code

      try {

        $('#encrypt-blog').html(content);

        // NO Style Change here

        {callback}

        // NO Style Change here

      } catch(e) {

        const errorInfo = '<p>'

                      + 'Some errors occurred, check the original file please.'

                      + 'Detailed exceptions are shown in console.'

                      + '</p>';

        console.error(e);

        $('#encrypt-blog').html(errorInfo);

      }

      document.getElementById('hbe-security').style.display = 'none';

      if (document.getElementById('toc-div')) {

        document.getElementById('toc-div').style.display = 'inline';

      }

    }

    // Call MathJax to render

    if(typeof MathJax !== 'undefined') {

      try {

        MathJax.Hub.Queue(

          ['resetEquationNumbers', MathJax.InputJax.TeX, ],

          ['PreProcess', MathJax.Hub, ],

          ['Reprocess', MathJax.Hub, ]

        );

      } catch (e) {

        console.log('Can\'t render with MathJax');

      }

    }

  } catch (e) {

    alert(decryptionError);

    console.log(e);

    return false;

  }

  return true;

}

function htmlDecode (str) {

  let s = '';

  if (str.length == 0) {

    return '';

  }

  s = str.replace(/>/g, '&');

  s = s.replace(/&lt;/g, '<');

  s = s.replace(/>/g, '>');

  s = s.replace(/ /g, '    '); // ??? why not ' '

  s = s.replace(/'/g, '\'');

  s = s.replace(/"/g, '"');

  content = CryptoJS.enc.Utf8.stringify(content);

  return content;

}

function setCookie (cookieName, cookieValue, expireMinutes) {

  const expireTime = new Date(new Date().getTime() + 1000 * 60 * expireMinutes);

  document.cookie = `${ cookieName }=${ escape(cookieValue) }${ expireMinutes == null ? '' : `;expires=${ expireTime.toGMTString() }` }`;

}

function getCookie (cookieName) {

  if (document.cookie.length > 0) {

    let idx = document.cookie.indexOf(`${ cookieName }=`);

    if (idx != -1) {

      idx = idx + cookieName.length + 1;

      let idy = document.cookie.indexOf(';', idx);

      if (idy == -1) {

        idy = document.cookie.length;

      }

      return unescape(document.cookie.substring(idx, idy));

    }

  }

  return '';

}

// Since you decided to use jQuery.

$(document).ready(

  function () {

    const COOKIE_NAME = 'HBE-PASSWORD';

    let password = String(getCookie(COOKIE_NAME));

    console.log('Get password from Cookie:' + password);

    if (password != '') {

      if(!decryptAES(password)) {

        // Delete cookie

        setCookie(COOKIE_NAME, password, -5);

      }

    }

    console.log('Registering Enter for decrypt.');

    document.getElementById('pass').onkeypress = function (keyPressEvent) {

      password = String(document.getElementById('pass').value);

      if (keyPressEvent.keyCode === 13) {

        const result = decryptAES(password);

        if (result) {

          setCookie(COOKIE_NAME, password, 30);

        }

      }

    };

  }

);