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Filename : privileges.js
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/**
 * @fileoverview    functions used in server privilege pages
 * @name            Server Privileges
 *
 * @requires    jQuery
 * @requires    jQueryUI
 * @requires    js/functions.js
 *
 */

/**
 * Validates the "add a user" form
 *
 * @param theForm
 *
 * @return {bool} whether the form is validated or not
 */
function checkAddUser(theForm) {
  if (theForm.elements.hostname && theForm.elements.hostname.value === '') {
    alert(Messages.strHostEmpty);
    theForm.elements.hostname.focus();
    return false;
  }
  if (theForm.elements.pred_username && theForm.elements.pred_username.value === 'userdefined' && theForm.elements.username.value === '') {
    alert(Messages.strUserEmpty);
    theForm.elements.username.focus();
    return false;
  }
  return Functions.checkPassword($(theForm));
}

/**
 * Export privileges modal handler
 *
 * @param {object} data
 *
 * @param {JQuery} msgbox
 *
 */
function exportPrivilegesModalHandler(data, msgbox) {
  if (typeof data !== 'undefined' && data.success === true) {
    var modal = $('#exportPrivilegesModal');
    // Remove any previous privilege modal data, if any
    modal.find('.modal-body').first().html('');
    $('#exportPrivilegesModalLabel').first().html('Loading');
    modal.modal('show');
    modal.on('shown.bs.modal', function () {
      modal.find('.modal-body').first().html(data.message);
      $('#exportPrivilegesModalLabel').first().html(data.title);
      Functions.ajaxRemoveMessage(msgbox);
      // Attach syntax highlighted editor to export dialog
      Functions.getSqlEditor(modal.find('textarea'));
    });
    return;
  }
  Functions.ajaxShowMessage(data.error, false);
}

/**
 * @implements EventListener
 */
const EditUserGroup = {
  /**
   * @param {MouseEvent} event
   */
  handleEvent: function (event) {
    const editUserGroupModal = document.getElementById('editUserGroupModal');
    const button = event.relatedTarget;
    const username = button.getAttribute('data-username');
    $.get('index.php?route=/server/user-groups/edit-form', {
      'username': username,
      'server': CommonParams.get('server')
    }, data => {
      if (typeof data === 'undefined' || data.success !== true) {
        Functions.ajaxShowMessage(data.error, false, 'error');
        return;
      }
      const modal = bootstrap.Modal.getInstance(editUserGroupModal);
      const modalBody = editUserGroupModal.querySelector('.modal-body');
      const saveButton = editUserGroupModal.querySelector('#editUserGroupModalSaveButton');
      modalBody.innerHTML = data.message;
      saveButton.addEventListener('click', () => {
        const form = $(editUserGroupModal.querySelector('#changeUserGroupForm'));
        $.post('index.php?route=/server/privileges', form.serialize() + CommonParams.get('arg_separator') + 'ajax_request=1', data => {
          if (typeof data === 'undefined' || data.success !== true) {
            Functions.ajaxShowMessage(data.error, false, 'error');
            return;
          }
          const userGroup = form.serializeArray().find(el => el.name === 'userGroup').value;
          // button -> td -> tr -> td.usrGroup
          const userGroupTableCell = button.parentElement.parentElement.querySelector('.usrGroup');
          userGroupTableCell.textContent = userGroup;
        });
        modal.hide();
      });
    });
  }
};

/**
 * @implements EventListener
 */
const AccountLocking = {
  handleEvent: function () {
    const button = this;
    const isLocked = button.dataset.isLocked === 'true';
    const url = isLocked ? 'index.php?route=/server/privileges/account-unlock' : 'index.php?route=/server/privileges/account-lock';
    const params = {
      'username': button.dataset.userName,
      'hostname': button.dataset.hostName,
      'ajax_request': true,
      'server': CommonParams.get('server')
    };
    $.post(url, params, data => {
      if (data.success === false) {
        Functions.ajaxShowMessage(data.error);
        return;
      }
      if (isLocked) {
        const lockIcon = Functions.getImage('s_lock', Messages.strLock, {}).toString();
        button.innerHTML = '<span class="text-nowrap">' + lockIcon + ' ' + Messages.strLock + '</span>';
        button.title = Messages.strLockAccount;
        button.dataset.isLocked = 'false';
      } else {
        const unlockIcon = Functions.getImage('s_unlock', Messages.strUnlock, {}).toString();
        button.innerHTML = '<span class="text-nowrap">' + unlockIcon + ' ' + Messages.strUnlock + '</span>';
        button.title = Messages.strUnlockAccount;
        button.dataset.isLocked = 'true';
      }
      Functions.ajaxShowMessage(data.message);
    });
  }
};

/**
 * AJAX scripts for /server/privileges page.
 *
 * Actions ajaxified here:
 * Add user
 * Revoke a user
 * Edit privileges
 * Export privileges
 * Paginate table of users
 * Flush privileges
 *
 * @memberOf    jQuery
 * @name        document.ready
 */

/**
 * Unbind all event handlers before tearing down a page
 */
AJAX.registerTeardown('server/privileges.js', function () {
  $('#fieldset_add_user_login').off('change', 'input[name=\'username\']');
  $(document).off('click', '#deleteUserCard .btn.ajax');
  const editUserGroupModal = document.getElementById('editUserGroupModal');
  if (editUserGroupModal) {
    editUserGroupModal.removeEventListener('show.bs.modal', EditUserGroup);
  }
  $(document).off('click', 'button.mult_submit[value=export]');
  $(document).off('click', 'a.export_user_anchor.ajax');
  $('button.jsAccountLocking').off('click');
  $('#dropUsersDbCheckbox').off('click');
  $(document).off('click', '.checkall_box');
  $(document).off('change', '#checkbox_SSL_priv');
  $(document).off('change', 'input[name="ssl_type"]');
  $(document).off('change', '#select_authentication_plugin');
});
AJAX.registerOnload('server/privileges.js', function () {
  /**
   * Display a warning if there is already a user by the name entered as the username.
   */
  $('#fieldset_add_user_login').on('change', 'input[name=\'username\']', function () {
    var username = $(this).val();
    var $warning = $('#user_exists_warning');
    if ($('#select_pred_username').val() === 'userdefined' && username !== '') {
      var href = $('form[name=\'usersForm\']').attr('action');
      var params = {
        'ajax_request': true,
        'server': CommonParams.get('server'),
        'validate_username': true,
        'username': username
      };
      $.get(href, params, function (data) {
        if (data.user_exists) {
          $warning.show();
        } else {
          $warning.hide();
        }
      });
    } else {
      $warning.hide();
    }
  });

  /**
   * Indicating password strength
   */
  $('#text_pma_pw').on('keyup', function () {
    var meterObj = $('#password_strength_meter');
    var meterObjLabel = $('#password_strength');
    var username = $('input[name="username"]');
    username = username.val();
    Functions.checkPasswordStrength($(this).val(), meterObj, meterObjLabel, username);
  });

  /**
   * Automatically switching to 'Use Text field' from 'No password' once start writing in text area
   */
  $('#text_pma_pw').on('input', function () {
    if ($('#text_pma_pw').val() !== '') {
      $('#select_pred_password').val('userdefined');
    }
  });
  $('#text_pma_change_pw').on('keyup', function () {
    var meterObj = $('#change_password_strength_meter');
    var meterObjLabel = $('#change_password_strength');
    Functions.checkPasswordStrength($(this).val(), meterObj, meterObjLabel, CommonParams.get('user'));
  });

  /**
   * Display a notice if sha256_password is selected
   */
  $(document).on('change', '#select_authentication_plugin', function () {
    var selectedPlugin = $(this).val();
    if (selectedPlugin === 'sha256_password') {
      $('#ssl_reqd_warning').show();
    } else {
      $('#ssl_reqd_warning').hide();
    }
  });

  /**
   * AJAX handler for 'Revoke User'
   *
   * @see         Functions.ajaxShowMessage()
   * @memberOf    jQuery
   * @name        revoke_user_click
   */
  $(document).on('click', '#deleteUserCard .btn.ajax', function (event) {
    event.preventDefault();
    var $thisButton = $(this);
    var $form = $('#usersForm');
    $thisButton.confirm(Messages.strDropUserWarning, $form.attr('action'), function (url) {
      var $dropUsersDbCheckbox = $('#dropUsersDbCheckbox');
      if ($dropUsersDbCheckbox.is(':checked')) {
        var isConfirmed = confirm(Messages.strDropDatabaseStrongWarning + '\n' + Functions.sprintf(Messages.strDoYouReally, 'DROP DATABASE'));
        if (!isConfirmed) {
          // Uncheck the drop users database checkbox
          $dropUsersDbCheckbox.prop('checked', false);
        }
      }
      Functions.ajaxShowMessage(Messages.strRemovingSelectedUsers);
      var argsep = CommonParams.get('arg_separator');
      $.post(url, $form.serialize() + argsep + 'delete=' + $thisButton.val() + argsep + 'ajax_request=true', function (data) {
        if (typeof data !== 'undefined' && data.success === true) {
          Functions.ajaxShowMessage(data.message);
          // Refresh navigation, if we dropped some databases with the name
          // that is the same as the username of the deleted user
          if ($('#dropUsersDbCheckbox:checked').length) {
            Navigation.reload();
          }
          // Remove the revoked user from the users list
          $form.find('input:checkbox:checked').parents('tr').slideUp('medium', function () {
            var thisUserInitial = $(this).find('input:checkbox').val().charAt(0).toUpperCase();
            $(this).remove();

            // If this is the last user with thisUserInitial, remove the link from #userAccountsPagination
            if ($('#userRightsTable').find('input:checkbox[value^="' + thisUserInitial + '"], input:checkbox[value^="' + thisUserInitial.toLowerCase() + '"]').length === 0) {
              $('#userAccountsPagination').find('.page-item > .page-link:contains(' + thisUserInitial + ')').parent('.page-item').addClass('disabled').html('<a class="page-link" href="#" tabindex="-1" aria-disabled="true">' + thisUserInitial + '</a>');
            }

            // Re-check the classes of each row
            $form.find('tbody').find('tr').each(function (index) {
              if (index >= 0 && index % 2 === 0) {
                $(this).removeClass('odd').addClass('even');
              } else if (index >= 0 && index % 2 !== 0) {
                $(this).removeClass('even').addClass('odd');
              }
            });
            // update the checkall checkbox
            $(Functions.checkboxesSel).trigger('change');
          });
        } else {
          Functions.ajaxShowMessage(data.error, false);
        }
      }); // end $.post()
    });
  }); // end Revoke User

  const editUserGroupModal = document.getElementById('editUserGroupModal');
  if (editUserGroupModal) {
    editUserGroupModal.addEventListener('show.bs.modal', EditUserGroup);
  }

  /**
   * AJAX handler for 'Export Privileges'
   *
   * @see         Functions.ajaxShowMessage()
   * @memberOf    jQuery
   * @name        export_user_click
   */
  $(document).on('click', 'button.mult_submit[value=export]', function (event) {
    event.preventDefault();
    // can't export if no users checked
    if ($(this.form).find('input:checked').length === 0) {
      Functions.ajaxShowMessage(Messages.strNoAccountSelected, 2000, 'success');
      return;
    }
    var msgbox = Functions.ajaxShowMessage();
    var argsep = CommonParams.get('arg_separator');
    var serverId = CommonParams.get('server');
    var selectedUsers = $('#usersForm input[name*=\'selected_usr\']:checkbox').serialize();
    var postStr = selectedUsers + '&submit_mult=export' + argsep + 'ajax_request=true&server=' + serverId;
    $.post($(this.form).prop('action'), postStr, function (data) {
      exportPrivilegesModalHandler(data, msgbox);
    }); // end $.post
  });
  // if exporting non-ajax, highlight anyways
  Functions.getSqlEditor($('textarea.export'));
  $(document).on('click', 'a.export_user_anchor.ajax', function (event) {
    event.preventDefault();
    var msgbox = Functions.ajaxShowMessage();
    $.get($(this).attr('href'), {
      'ajax_request': true
    }, function (data) {
      exportPrivilegesModalHandler(data, msgbox);
    }); // end $.get
  }); // end export privileges

  $('button.jsAccountLocking').on('click', AccountLocking.handleEvent);
  $(document).on('change', 'input[name="ssl_type"]', function () {
    var $div = $('#specified_div');
    if ($('#ssl_type_SPECIFIED').is(':checked')) {
      $div.find('input').prop('disabled', false);
    } else {
      $div.find('input').prop('disabled', true);
    }
  });
  $(document).on('change', '#checkbox_SSL_priv', function () {
    var $div = $('#require_ssl_div');
    if ($(this).is(':checked')) {
      $div.find('input').prop('disabled', false);
      $('#ssl_type_SPECIFIED').trigger('change');
    } else {
      $div.find('input').prop('disabled', true);
    }
  });
  $('#checkbox_SSL_priv').trigger('change');

  /*
   * Create submenu for simpler interface
   */
  var addOrUpdateSubmenu = function () {
    var $subNav = $('.nav-pills');
    var $editUserDialog = $('#edit_user_dialog');
    var submenuLabel;
    var submenuLink;
    var linkNumber;

    // if submenu exists yet, remove it first
    if ($subNav.length > 0) {
      $subNav.remove();
    }

    // construct a submenu from the existing fieldsets
    $subNav = $('<ul></ul>').prop('class', 'nav nav-pills m-2');
    $('#edit_user_dialog .submenu-item').each(function () {
      submenuLabel = $(this).find('legend[data-submenu-label]').data('submenu-label');
      submenuLink = $('<a></a>').prop('class', 'nav-link').prop('href', '#').html(submenuLabel);
      $('<li></li>').prop('class', 'nav-item').append(submenuLink).appendTo($subNav);
    });

    // click handlers for submenu
    $subNav.find('a').on('click', function (e) {
      e.preventDefault();
      // if already active, ignore click
      if ($(this).hasClass('active')) {
        return;
      }
      $subNav.find('a').removeClass('active');
      $(this).addClass('active');

      // which section to show now?
      linkNumber = $subNav.find('a').index($(this));
      // hide all sections but the one to show
      $('#edit_user_dialog .submenu-item').hide().eq(linkNumber).show();
    });

    // make first menu item active
    // TODO: support URL hash history
    $subNav.find('> :first-child a').addClass('active');
    $editUserDialog.prepend($subNav);

    // hide all sections but the first
    $('#edit_user_dialog .submenu-item').hide().eq(0).show();

    // scroll to the top
    $('html, body').animate({
      scrollTop: 0
    }, 'fast');
  };
  $('input.autofocus').trigger('focus');
  $(Functions.checkboxesSel).trigger('change');
  Functions.displayPasswordGenerateButton();
  if ($('#edit_user_dialog').length > 0) {
    addOrUpdateSubmenu();
  }

  /**
   * Select all privileges
   *
   * @param {HTMLElement} e
   * @return {void}
   */
  var tableSelectAll = function (e) {
    const method = e.target.getAttribute('data-select-target');
    var options = $(method).first().children();
    options.each(function (_, obj) {
      obj.selected = true;
    });
  };
  $('#select_priv_all').on('click', tableSelectAll);
  $('#insert_priv_all').on('click', tableSelectAll);
  $('#update_priv_all').on('click', tableSelectAll);
  $('#references_priv_all').on('click', tableSelectAll);
  var windowWidth = $(window).width();
  $('.jsresponsive').css('max-width', windowWidth - 35 + 'px');
  $('#addUsersForm').on('submit', function () {
    return checkAddUser(this);
  });
  $('#copyUserForm').on('submit', function () {
    return checkAddUser(this);
  });
});