gethue/ko/bindings/ko.html.js

Hue is an Open source SQL Query Editor for Databases/Warehouses

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// to you under the Apache License, Version 2.0 (the
// "License"); you may not use this file except in compliance
// with the License.  You may obtain a copy of the License at
//
//     http://www.apache.org/licenses/LICENSE-2.0
//
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import * as ko from 'knockout';

import deXSS from '../../utils/html/deXSS';

// we override the default html binding to prevent XSS/JS injection
const originalHtmlBinding = ko.bindingHandlers.html;

ko.bindingHandlers.html = {
  init: function (element, valueAccessor, allBindings, viewModel, bindingContext) {
    const newValueAccessor = function () {
      return deXSS(ko.unwrap(valueAccessor()));
    };
    originalHtmlBinding.init(element, newValueAccessor, allBindings, viewModel, bindingContext);
  },
  update: function (element, valueAccessor, allBindings, viewModel, bindingContext) {
    const newValueAccessor = function () {
      return deXSS(ko.unwrap(valueAccessor()));
    };
    originalHtmlBinding.update(element, newValueAccessor, allBindings, viewModel, bindingContext);
  }
};

ko.bindingHandlers.htmlUnsecure = {
  init: function (element, valueAccessor, allBindings, viewModel, bindingContext) {
    originalHtmlBinding.init(element, valueAccessor, allBindings, viewModel, bindingContext);
  },
  update: function (element, valueAccessor, allBindings, viewModel, bindingContext) {
    originalHtmlBinding.update(element, valueAccessor, allBindings, viewModel, bindingContext);
  }
};