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/*! @license DOMPurify 3.3.0 | (c) Cure53 and other contributors | Released under the Apache license 2.0 and Mozilla Public License 2.0 | github.com/cure53/DOMPurify/blob/3.3.0/LICENSE */ |
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|
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(function (global, factory) { |
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typeof exports === 'object' && typeof module !== 'undefined' ? module.exports = factory() : |
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typeof define === 'function' && define.amd ? define(factory) : |
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(global = typeof globalThis !== 'undefined' ? globalThis : global || self, global.DOMPurify = factory()); |
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})(this, (function () { 'use strict'; |
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|
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const { |
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entries, |
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setPrototypeOf, |
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isFrozen, |
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getPrototypeOf, |
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getOwnPropertyDescriptor |
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} = Object; |
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let { |
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freeze, |
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seal, |
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create |
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} = Object; // eslint-disable-line import/no-mutable-exports |
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let { |
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apply, |
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construct |
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} = typeof Reflect !== 'undefined' && Reflect; |
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if (!freeze) { |
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freeze = function freeze(x) { |
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return x; |
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}; |
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} |
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if (!seal) { |
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seal = function seal(x) { |
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return x; |
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}; |
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} |
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if (!apply) { |
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apply = function apply(func, thisArg) { |
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for (var _len = arguments.length, args = new Array(_len > 2 ? _len - 2 : 0), _key = 2; _key < _len; _key++) { |
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args[_key - 2] = arguments[_key]; |
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} |
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return func.apply(thisArg, args); |
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}; |
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} |
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if (!construct) { |
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construct = function construct(Func) { |
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for (var _len2 = arguments.length, args = new Array(_len2 > 1 ? _len2 - 1 : 0), _key2 = 1; _key2 < _len2; _key2++) { |
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args[_key2 - 1] = arguments[_key2]; |
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} |
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return new Func(...args); |
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}; |
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} |
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const arrayForEach = unapply(Array.prototype.forEach); |
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const arrayLastIndexOf = unapply(Array.prototype.lastIndexOf); |
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const arrayPop = unapply(Array.prototype.pop); |
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const arrayPush = unapply(Array.prototype.push); |
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const arraySplice = unapply(Array.prototype.splice); |
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const stringToLowerCase = unapply(String.prototype.toLowerCase); |
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const stringToString = unapply(String.prototype.toString); |
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const stringMatch = unapply(String.prototype.match); |
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const stringReplace = unapply(String.prototype.replace); |
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const stringIndexOf = unapply(String.prototype.indexOf); |
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const stringTrim = unapply(String.prototype.trim); |
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const objectHasOwnProperty = unapply(Object.prototype.hasOwnProperty); |
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const regExpTest = unapply(RegExp.prototype.test); |
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const typeErrorCreate = unconstruct(TypeError); |
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/** |
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* Creates a new function that calls the given function with a specified thisArg and arguments. |
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* |
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* @param func - The function to be wrapped and called. |
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* @returns A new function that calls the given function with a specified thisArg and arguments. |
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*/ |
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function unapply(func) { |
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return function (thisArg) { |
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if (thisArg instanceof RegExp) { |
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thisArg.lastIndex = 0; |
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} |
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for (var _len3 = arguments.length, args = new Array(_len3 > 1 ? _len3 - 1 : 0), _key3 = 1; _key3 < _len3; _key3++) { |
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args[_key3 - 1] = arguments[_key3]; |
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} |
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return apply(func, thisArg, args); |
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}; |
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} |
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/** |
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* Creates a new function that constructs an instance of the given constructor function with the provided arguments. |
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* |
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* @param func - The constructor function to be wrapped and called. |
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* @returns A new function that constructs an instance of the given constructor function with the provided arguments. |
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*/ |
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function unconstruct(Func) { |
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return function () { |
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for (var _len4 = arguments.length, args = new Array(_len4), _key4 = 0; _key4 < _len4; _key4++) { |
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args[_key4] = arguments[_key4]; |
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} |
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return construct(Func, args); |
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}; |
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} |
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/** |
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* Add properties to a lookup table |
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* |
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* @param set - The set to which elements will be added. |
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* @param array - The array containing elements to be added to the set. |
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* @param transformCaseFunc - An optional function to transform the case of each element before adding to the set. |
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* @returns The modified set with added elements. |
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*/ |
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function addToSet(set, array) { |
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let transformCaseFunc = arguments.length > 2 && arguments[2] !== undefined ? arguments[2] : stringToLowerCase; |
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if (setPrototypeOf) { |
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// Make 'in' and truthy checks like Boolean(set.constructor) |
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// independent of any properties defined on Object.prototype. |
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// Prevent prototype setters from intercepting set as a this value. |
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setPrototypeOf(set, null); |
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} |
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let l = array.length; |
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while (l--) { |
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let element = array[l]; |
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if (typeof element === 'string') { |
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const lcElement = transformCaseFunc(element); |
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if (lcElement !== element) { |
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// Config presets (e.g. tags.js, attrs.js) are immutable. |
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if (!isFrozen(array)) { |
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array[l] = lcElement; |
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} |
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element = lcElement; |
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} |
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} |
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set[element] = true; |
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} |
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return set; |
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} |
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/** |
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* Clean up an array to harden against CSPP |
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* |
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* @param array - The array to be cleaned. |
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* @returns The cleaned version of the array |
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*/ |
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function cleanArray(array) { |
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for (let index = 0; index < array.length; index++) { |
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const isPropertyExist = objectHasOwnProperty(array, index); |
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if (!isPropertyExist) { |
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array[index] = null; |
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} |
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} |
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return array; |
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} |
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/** |
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* Shallow clone an object |
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* |
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* @param object - The object to be cloned. |
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* @returns A new object that copies the original. |
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*/ |
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function clone(object) { |
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const newObject = create(null); |
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for (const [property, value] of entries(object)) { |
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const isPropertyExist = objectHasOwnProperty(object, property); |
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if (isPropertyExist) { |
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if (Array.isArray(value)) { |
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newObject[property] = cleanArray(value); |
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} else if (value && typeof value === 'object' && value.constructor === Object) { |
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newObject[property] = clone(value); |
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} else { |
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newObject[property] = value; |
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} |
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} |
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} |
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return newObject; |
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} |
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/** |
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* This method automatically checks if the prop is function or getter and behaves accordingly. |
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* |
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* @param object - The object to look up the getter function in its prototype chain. |
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* @param prop - The property name for which to find the getter function. |
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* @returns The getter function found in the prototype chain or a fallback function. |
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*/ |
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function lookupGetter(object, prop) { |
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while (object !== null) { |
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const desc = getOwnPropertyDescriptor(object, prop); |
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if (desc) { |
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if (desc.get) { |
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return unapply(desc.get); |
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} |
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if (typeof desc.value === 'function') { |
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return unapply(desc.value); |
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} |
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} |
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object = getPrototypeOf(object); |
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} |
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function fallbackValue() { |
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return null; |
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} |
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return fallbackValue; |
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} |
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|
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const html$1 = freeze(['a', 'abbr', 'acronym', 'address', 'area', 'article', 'aside', 'audio', 'b', 'bdi', 'bdo', 'big', 'blink', 'blockquote', 'body', 'br', 'button', 'canvas', 'caption', 'center', 'cite', 'code', 'col', 'colgroup', 'content', 'data', 'datalist', 'dd', 'decorator', 'del', 'details', 'dfn', 'dialog', 'dir', 'div', 'dl', 'dt', 'element', 'em', 'fieldset', 'figcaption', 'figure', 'font', 'footer', 'form', 'h1', 'h2', 'h3', 'h4', 'h5', 'h6', 'head', 'header', 'hgroup', 'hr', 'html', 'i', 'img', 'input', 'ins', 'kbd', 'label', 'legend', 'li', 'main', 'map', 'mark', 'marquee', 'menu', 'menuitem', 'meter', 'nav', 'nobr', 'ol', 'optgroup', 'option', 'output', 'p', 'picture', 'pre', 'progress', 'q', 'rp', 'rt', 'ruby', 's', 'samp', 'search', 'section', 'select', 'shadow', 'slot', 'small', 'source', 'spacer', 'span', 'strike', 'strong', 'style', 'sub', 'summary', 'sup', 'table', 'tbody', 'td', 'template', 'textarea', 'tfoot', 'th', 'thead', 'time', 'tr', 'track', 'tt', 'u', 'ul', 'var', 'video', 'wbr']); |
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const svg$1 = freeze(['svg', 'a', 'altglyph', 'altglyphdef', 'altglyphitem', 'animatecolor', 'animatemotion', 'animatetransform', 'circle', 'clippath', 'defs', 'desc', 'ellipse', 'enterkeyhint', 'exportparts', 'filter', 'font', 'g', 'glyph', 'glyphref', 'hkern', 'image', 'inputmode', 'line', 'lineargradient', 'marker', 'mask', 'metadata', 'mpath', 'part', 'path', 'pattern', 'polygon', 'polyline', 'radialgradient', 'rect', 'stop', 'style', 'switch', 'symbol', 'text', 'textpath', 'title', 'tref', 'tspan', 'view', 'vkern']); |
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const svgFilters = freeze(['feBlend', 'feColorMatrix', 'feComponentTransfer', 'feComposite', 'feConvolveMatrix', 'feDiffuseLighting', 'feDisplacementMap', 'feDistantLight', 'feDropShadow', 'feFlood', 'feFuncA', 'feFuncB', 'feFuncG', 'feFuncR', 'feGaussianBlur', 'feImage', 'feMerge', 'feMergeNode', 'feMorphology', 'feOffset', 'fePointLight', 'feSpecularLighting', 'feSpotLight', 'feTile', 'feTurbulence']); |
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// List of SVG elements that are disallowed by default. |
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// We still need to know them so that we can do namespace |
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// checks properly in case one wants to add them to |
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// allow-list. |
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const svgDisallowed = freeze(['animate', 'color-profile', 'cursor', 'discard', 'font-face', 'font-face-format', 'font-face-name', 'font-face-src', 'font-face-uri', 'foreignobject', 'hatch', 'hatchpath', 'mesh', 'meshgradient', 'meshpatch', 'meshrow', 'missing-glyph', 'script', 'set', 'solidcolor', 'unknown', 'use']); |
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const mathMl$1 = freeze(['math', 'menclose', 'merror', 'mfenced', 'mfrac', 'mglyph', 'mi', 'mlabeledtr', 'mmultiscripts', 'mn', 'mo', 'mover', 'mpadded', 'mphantom', 'mroot', 'mrow', 'ms', 'mspace', 'msqrt', 'mstyle', 'msub', 'msup', 'msubsup', 'mtable', 'mtd', 'mtext', 'mtr', 'munder', 'munderover', 'mprescripts']); |
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// Similarly to SVG, we want to know all MathML elements, |
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// even those that we disallow by default. |
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const mathMlDisallowed = freeze(['maction', 'maligngroup', 'malignmark', 'mlongdiv', 'mscarries', 'mscarry', 'msgroup', 'mstack', 'msline', 'msrow', 'semantics', 'annotation', 'annotation-xml', 'mprescripts', 'none']); |
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const text = freeze(['#text']); |
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|
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const html = freeze(['accept', 'action', 'align', 'alt', 'autocapitalize', 'autocomplete', 'autopictureinpicture', 'autoplay', 'background', 'bgcolor', 'border', 'capture', 'cellpadding', 'cellspacing', 'checked', 'cite', 'class', 'clear', 'color', 'cols', 'colspan', 'controls', 'controlslist', 'coords', 'crossorigin', 'datetime', 'decoding', 'default', 'dir', 'disabled', 'disablepictureinpicture', 'disableremoteplayback', 'download', 'draggable', 'enctype', 'enterkeyhint', 'exportparts', 'face', 'for', 'headers', 'height', 'hidden', 'high', 'href', 'hreflang', 'id', 'inert', 'inputmode', 'integrity', 'ismap', 'kind', 'label', 'lang', 'list', 'loading', 'loop', 'low', 'max', 'maxlength', 'media', 'method', 'min', 'minlength', 'multiple', 'muted', 'name', 'nonce', 'noshade', 'novalidate', 'nowrap', 'open', 'optimum', 'part', 'pattern', 'placeholder', 'playsinline', 'popover', 'popovertarget', 'popovertargetaction', 'poster', 'preload', 'pubdate', 'radiogroup', 'readonly', 'rel', 'required', 'rev', 'reversed', 'role', 'rows', 'rowspan', 'spellcheck', 'scope', 'selected', 'shape', 'size', 'sizes', 'slot', 'span', 'srclang', 'start', 'src', 'srcset', 'step', 'style', 'summary', 'tabindex', 'title', 'translate', 'type', 'usemap', 'valign', 'value', 'width', 'wrap', 'xmlns', 'slot']); |
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const svg = freeze(['accent-height', 'accumulate', 'additive', 'alignment-baseline', 'amplitude', 'ascent', 'attributename', 'attributetype', 'azimuth', 'basefrequency', 'baseline-shift', 'begin', 'bias', 'by', 'class', 'clip', 'clippathunits', 'clip-path', 'clip-rule', 'color', 'color-interpolation', 'color-interpolation-filters', 'color-profile', 'color-rendering', 'cx', 'cy', 'd', 'dx', 'dy', 'diffuseconstant', 'direction', 'display', 'divisor', 'dur', 'edgemode', 'elevation', 'end', 'exponent', 'fill', 'fill-opacity', 'fill-rule', 'filter', 'filterunits', 'flood-color', 'flood-opacity', 'font-family', 'font-size', 'font-size-adjust', 'font-stretch', 'font-style', 'font-variant', 'font-weight', 'fx', 'fy', 'g1', 'g2', 'glyph-name', 'glyphref', 'gradientunits', 'gradienttransform', 'height', 'href', 'id', 'image-rendering', 'in', 'in2', 'intercept', 'k', 'k1', 'k2', 'k3', 'k4', 'kerning', 'keypoints', 'keysplines', 'keytimes', 'lang', 'lengthadjust', 'letter-spacing', 'kernelmatrix', 'kernelunitlength', 'lighting-color', 'local', 'marker-end', 'marker-mid', 'marker-start', 'markerheight', 'markerunits', 'markerwidth', 'maskcontentunits', 'maskunits', 'max', 'mask', 'mask-type', 'media', 'method', 'mode', 'min', 'name', 'numoctaves', 'offset', 'operator', 'opacity', 'order', 'orient', 'orientation', 'origin', 'overflow', 'paint-order', 'path', 'pathlength', 'patterncontentunits', 'patterntransform', 'patternunits', 'points', 'preservealpha', 'preserveaspectratio', 'primitiveunits', 'r', 'rx', 'ry', 'radius', 'refx', 'refy', 'repeatcount', 'repeatdur', 'restart', 'result', 'rotate', 'scale', 'seed', 'shape-rendering', 'slope', 'specularconstant', 'specularexponent', 'spreadmethod', 'startoffset', 'stddeviation', 'stitchtiles', 'stop-color', 'stop-opacity', 'stroke-dasharray', 'stroke-dashoffset', 'stroke-linecap', 'stroke-linejoin', 'stroke-miterlimit', 'stroke-opacity', 'stroke', 'stroke-width', 'style', 'surfacescale', 'systemlanguage', 'tabindex', 'tablevalues', 'targetx', 'targety', 'transform', 'transform-origin', 'text-anchor', 'text-decoration', 'text-rendering', 'textlength', 'type', 'u1', 'u2', 'unicode', 'values', 'viewbox', 'visibility', 'version', 'vert-adv-y', 'vert-origin-x', 'vert-origin-y', 'width', 'word-spacing', 'wrap', 'writing-mode', 'xchannelselector', 'ychannelselector', 'x', 'x1', 'x2', 'xmlns', 'y', 'y1', 'y2', 'z', 'zoomandpan']); |
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const mathMl = freeze(['accent', 'accentunder', 'align', 'bevelled', 'close', 'columnsalign', 'columnlines', 'columnspan', 'denomalign', 'depth', 'dir', 'display', 'displaystyle', 'encoding', 'fence', 'frame', 'height', 'href', 'id', 'largeop', 'length', 'linethickness', 'lspace', 'lquote', 'mathbackground', 'mathcolor', 'mathsize', 'mathvariant', 'maxsize', 'minsize', 'movablelimits', 'notation', 'numalign', 'open', 'rowalign', 'rowlines', 'rowspacing', 'rowspan', 'rspace', 'rquote', 'scriptlevel', 'scriptminsize', 'scriptsizemultiplier', 'selection', 'separator', 'separators', 'stretchy', 'subscriptshift', 'supscriptshift', 'symmetric', 'voffset', 'width', 'xmlns']); |
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const xml = freeze(['xlink:href', 'xml:id', 'xlink:title', 'xml:space', 'xmlns:xlink']); |
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|
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// eslint-disable-next-line unicorn/better-regex |
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const MUSTACHE_EXPR = seal(/\{\{[\w\W]*|[\w\W]*\}\}/gm); // Specify template detection regex for SAFE_FOR_TEMPLATES mode |
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const ERB_EXPR = seal(/<%[\w\W]*|[\w\W]*%>/gm); |
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const TMPLIT_EXPR = seal(/\$\{[\w\W]*/gm); // eslint-disable-line unicorn/better-regex |
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const DATA_ATTR = seal(/^data-[\-\w.\u00B7-\uFFFF]+$/); // eslint-disable-line no-useless-escape |
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const ARIA_ATTR = seal(/^aria-[\-\w]+$/); // eslint-disable-line no-useless-escape |
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const IS_ALLOWED_URI = seal(/^(?:(?:(?:f|ht)tps?|mailto|tel|callto|sms|cid|xmpp|matrix):|[^a-z]|[a-z+.\-]+(?:[^a-z+.\-:]|$))/i // eslint-disable-line no-useless-escape |
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); |
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const IS_SCRIPT_OR_DATA = seal(/^(?:\w+script|data):/i); |
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const ATTR_WHITESPACE = seal(/[\u0000-\u0020\u00A0\u1680\u180E\u2000-\u2029\u205F\u3000]/g // eslint-disable-line no-control-regex |
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); |
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const DOCTYPE_NAME = seal(/^html$/i); |
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const CUSTOM_ELEMENT = seal(/^[a-z][.\w]*(-[.\w]+)+$/i); |
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|
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var EXPRESSIONS = /*#__PURE__*/Object.freeze({ |
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__proto__: null, |
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ARIA_ATTR: ARIA_ATTR, |
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ATTR_WHITESPACE: ATTR_WHITESPACE, |
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CUSTOM_ELEMENT: CUSTOM_ELEMENT, |
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DATA_ATTR: DATA_ATTR, |
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DOCTYPE_NAME: DOCTYPE_NAME, |
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ERB_EXPR: ERB_EXPR, |
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IS_ALLOWED_URI: IS_ALLOWED_URI, |
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IS_SCRIPT_OR_DATA: IS_SCRIPT_OR_DATA, |
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MUSTACHE_EXPR: MUSTACHE_EXPR, |
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TMPLIT_EXPR: TMPLIT_EXPR |
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}); |
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|
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/* eslint-disable @typescript-eslint/indent */ |
| 240 |
// https://developer.mozilla.org/en-US/docs/Web/API/Node/nodeType |
| 241 |
const NODE_TYPE = { |
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element: 1, |
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attribute: 2, |
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text: 3, |
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cdataSection: 4, |
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entityReference: 5, |
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// Deprecated |
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entityNode: 6, |
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// Deprecated |
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progressingInstruction: 7, |
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comment: 8, |
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document: 9, |
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documentType: 10, |
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documentFragment: 11, |
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notation: 12 // Deprecated |
| 256 |
}; |
| 257 |
const getGlobal = function getGlobal() { |
| 258 |
return typeof window === 'undefined' ? null : window; |
| 259 |
}; |
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/** |
| 261 |
* Creates a no-op policy for internal use only. |
| 262 |
* Don't export this function outside this module! |
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* @param trustedTypes The policy factory. |
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* @param purifyHostElement The Script element used to load DOMPurify (to determine policy name suffix). |
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* @return The policy created (or null, if Trusted Types |
| 266 |
* are not supported or creating the policy failed). |
| 267 |
*/ |
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const _createTrustedTypesPolicy = function _createTrustedTypesPolicy(trustedTypes, purifyHostElement) { |
| 269 |
if (typeof trustedTypes !== 'object' || typeof trustedTypes.createPolicy !== 'function') { |
| 270 |
return null; |
| 271 |
} |
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// Allow the callers to control the unique policy name |
| 273 |
// by adding a data-tt-policy-suffix to the script element with the DOMPurify. |
| 274 |
// Policy creation with duplicate names throws in Trusted Types. |
| 275 |
let suffix = null; |
| 276 |
const ATTR_NAME = 'data-tt-policy-suffix'; |
| 277 |
if (purifyHostElement && purifyHostElement.hasAttribute(ATTR_NAME)) { |
| 278 |
suffix = purifyHostElement.getAttribute(ATTR_NAME); |
| 279 |
} |
| 280 |
const policyName = 'dompurify' + (suffix ? '#' + suffix : ''); |
| 281 |
try { |
| 282 |
return trustedTypes.createPolicy(policyName, { |
| 283 |
createHTML(html) { |
| 284 |
return html; |
| 285 |
}, |
| 286 |
createScriptURL(scriptUrl) { |
| 287 |
return scriptUrl; |
| 288 |
} |
| 289 |
}); |
| 290 |
} catch (_) { |
| 291 |
// Policy creation failed (most likely another DOMPurify script has |
| 292 |
// already run). Skip creating the policy, as this will only cause errors |
| 293 |
// if TT are enforced. |
| 294 |
console.warn('TrustedTypes policy ' + policyName + ' could not be created.'); |
| 295 |
return null; |
| 296 |
} |
| 297 |
}; |
| 298 |
const _createHooksMap = function _createHooksMap() { |
| 299 |
return { |
| 300 |
afterSanitizeAttributes: [], |
| 301 |
afterSanitizeElements: [], |
| 302 |
afterSanitizeShadowDOM: [], |
| 303 |
beforeSanitizeAttributes: [], |
| 304 |
beforeSanitizeElements: [], |
| 305 |
beforeSanitizeShadowDOM: [], |
| 306 |
uponSanitizeAttribute: [], |
| 307 |
uponSanitizeElement: [], |
| 308 |
uponSanitizeShadowNode: [] |
| 309 |
}; |
| 310 |
}; |
| 311 |
function createDOMPurify() { |
| 312 |
let window = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : getGlobal(); |
| 313 |
const DOMPurify = root => createDOMPurify(root); |
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DOMPurify.version = '3.3.0'; |
| 315 |
DOMPurify.removed = []; |
| 316 |
if (!window || !window.document || window.document.nodeType !== NODE_TYPE.document || !window.Element) { |
| 317 |
// Not running in a browser, provide a factory function |
| 318 |
// so that you can pass your own Window |
| 319 |
DOMPurify.isSupported = false; |
| 320 |
return DOMPurify; |
| 321 |
} |
| 322 |
let { |
| 323 |
document |
| 324 |
} = window; |
| 325 |
const originalDocument = document; |
| 326 |
const currentScript = originalDocument.currentScript; |
| 327 |
const { |
| 328 |
DocumentFragment, |
| 329 |
HTMLTemplateElement, |
| 330 |
Node, |
| 331 |
Element, |
| 332 |
NodeFilter, |
| 333 |
NamedNodeMap = window.NamedNodeMap || window.MozNamedAttrMap, |
| 334 |
HTMLFormElement, |
| 335 |
DOMParser, |
| 336 |
trustedTypes |
| 337 |
} = window; |
| 338 |
const ElementPrototype = Element.prototype; |
| 339 |
const cloneNode = lookupGetter(ElementPrototype, 'cloneNode'); |
| 340 |
const remove = lookupGetter(ElementPrototype, 'remove'); |
| 341 |
const getNextSibling = lookupGetter(ElementPrototype, 'nextSibling'); |
| 342 |
const getChildNodes = lookupGetter(ElementPrototype, 'childNodes'); |
| 343 |
const getParentNode = lookupGetter(ElementPrototype, 'parentNode'); |
| 344 |
// As per issue #47, the web-components registry is inherited by a |
| 345 |
// new document created via createHTMLDocument. As per the spec |
| 346 |
// (http://w3c.github.io/webcomponents/spec/custom/#creating-and-passing-registries) |
| 347 |
// a new empty registry is used when creating a template contents owner |
| 348 |
// document, so we use that as our parent document to ensure nothing |
| 349 |
// is inherited. |
| 350 |
if (typeof HTMLTemplateElement === 'function') { |
| 351 |
const template = document.createElement('template'); |
| 352 |
if (template.content && template.content.ownerDocument) { |
| 353 |
document = template.content.ownerDocument; |
| 354 |
} |
| 355 |
} |
| 356 |
let trustedTypesPolicy; |
| 357 |
let emptyHTML = ''; |
| 358 |
const { |
| 359 |
implementation, |
| 360 |
createNodeIterator, |
| 361 |
createDocumentFragment, |
| 362 |
getElementsByTagName |
| 363 |
} = document; |
| 364 |
const { |
| 365 |
importNode |
| 366 |
} = originalDocument; |
| 367 |
let hooks = _createHooksMap(); |
| 368 |
/** |
| 369 |
* Expose whether this browser supports running the full DOMPurify. |
| 370 |
*/ |
| 371 |
DOMPurify.isSupported = typeof entries === 'function' && typeof getParentNode === 'function' && implementation && implementation.createHTMLDocument !== undefined; |
| 372 |
const { |
| 373 |
MUSTACHE_EXPR, |
| 374 |
ERB_EXPR, |
| 375 |
TMPLIT_EXPR, |
| 376 |
DATA_ATTR, |
| 377 |
ARIA_ATTR, |
| 378 |
IS_SCRIPT_OR_DATA, |
| 379 |
ATTR_WHITESPACE, |
| 380 |
CUSTOM_ELEMENT |
| 381 |
} = EXPRESSIONS; |
| 382 |
let { |
| 383 |
IS_ALLOWED_URI: IS_ALLOWED_URI$1 |
| 384 |
} = EXPRESSIONS; |
| 385 |
/** |
| 386 |
* We consider the elements and attributes below to be safe. Ideally |
| 387 |
* don't add any new ones but feel free to remove unwanted ones. |
| 388 |
*/ |
| 389 |
/* allowed element names */ |
| 390 |
let ALLOWED_TAGS = null; |
| 391 |
const DEFAULT_ALLOWED_TAGS = addToSet({}, [...html$1, ...svg$1, ...svgFilters, ...mathMl$1, ...text]); |
| 392 |
/* Allowed attribute names */ |
| 393 |
let ALLOWED_ATTR = null; |
| 394 |
const DEFAULT_ALLOWED_ATTR = addToSet({}, [...html, ...svg, ...mathMl, ...xml]); |
| 395 |
/* |
| 396 |
* Configure how DOMPurify should handle custom elements and their attributes as well as customized built-in elements. |
| 397 |
* @property {RegExp|Function|null} tagNameCheck one of [null, regexPattern, predicate]. Default: `null` (disallow any custom elements) |
| 398 |
* @property {RegExp|Function|null} attributeNameCheck one of [null, regexPattern, predicate]. Default: `null` (disallow any attributes not on the allow list) |
| 399 |
* @property {boolean} allowCustomizedBuiltInElements allow custom elements derived from built-ins if they pass CUSTOM_ELEMENT_HANDLING.tagNameCheck. Default: `false`. |
| 400 |
*/ |
| 401 |
let CUSTOM_ELEMENT_HANDLING = Object.seal(create(null, { |
| 402 |
tagNameCheck: { |
| 403 |
writable: true, |
| 404 |
configurable: false, |
| 405 |
enumerable: true, |
| 406 |
value: null |
| 407 |
}, |
| 408 |
attributeNameCheck: { |
| 409 |
writable: true, |
| 410 |
configurable: false, |
| 411 |
enumerable: true, |
| 412 |
value: null |
| 413 |
}, |
| 414 |
allowCustomizedBuiltInElements: { |
| 415 |
writable: true, |
| 416 |
configurable: false, |
| 417 |
enumerable: true, |
| 418 |
value: false |
| 419 |
} |
| 420 |
})); |
| 421 |
/* Explicitly forbidden tags (overrides ALLOWED_TAGS/ADD_TAGS) */ |
| 422 |
let FORBID_TAGS = null; |
| 423 |
/* Explicitly forbidden attributes (overrides ALLOWED_ATTR/ADD_ATTR) */ |
| 424 |
let FORBID_ATTR = null; |
| 425 |
/* Config object to store ADD_TAGS/ADD_ATTR functions (when used as functions) */ |
| 426 |
const EXTRA_ELEMENT_HANDLING = Object.seal(create(null, { |
| 427 |
tagCheck: { |
| 428 |
writable: true, |
| 429 |
configurable: false, |
| 430 |
enumerable: true, |
| 431 |
value: null |
| 432 |
}, |
| 433 |
attributeCheck: { |
| 434 |
writable: true, |
| 435 |
configurable: false, |
| 436 |
enumerable: true, |
| 437 |
value: null |
| 438 |
} |
| 439 |
})); |
| 440 |
/* Decide if ARIA attributes are okay */ |
| 441 |
let ALLOW_ARIA_ATTR = true; |
| 442 |
/* Decide if custom data attributes are okay */ |
| 443 |
let ALLOW_DATA_ATTR = true; |
| 444 |
/* Decide if unknown protocols are okay */ |
| 445 |
let ALLOW_UNKNOWN_PROTOCOLS = false; |
| 446 |
/* Decide if self-closing tags in attributes are allowed. |
| 447 |
* Usually removed due to a mXSS issue in jQuery 3.0 */ |
| 448 |
let ALLOW_SELF_CLOSE_IN_ATTR = true; |
| 449 |
/* Output should be safe for common template engines. |
| 450 |
* This means, DOMPurify removes data attributes, mustaches and ERB |
| 451 |
*/ |
| 452 |
let SAFE_FOR_TEMPLATES = false; |
| 453 |
/* Output should be safe even for XML used within HTML and alike. |
| 454 |
* This means, DOMPurify removes comments when containing risky content. |
| 455 |
*/ |
| 456 |
let SAFE_FOR_XML = true; |
| 457 |
/* Decide if document with <html>... should be returned */ |
| 458 |
let WHOLE_DOCUMENT = false; |
| 459 |
/* Track whether config is already set on this instance of DOMPurify. */ |
| 460 |
let SET_CONFIG = false; |
| 461 |
/* Decide if all elements (e.g. style, script) must be children of |
| 462 |
* document.body. By default, browsers might move them to document.head */ |
| 463 |
let FORCE_BODY = false; |
| 464 |
/* Decide if a DOM `HTMLBodyElement` should be returned, instead of a html |
| 465 |
* string (or a TrustedHTML object if Trusted Types are supported). |
| 466 |
* If `WHOLE_DOCUMENT` is enabled a `HTMLHtmlElement` will be returned instead |
| 467 |
*/ |
| 468 |
let RETURN_DOM = false; |
| 469 |
/* Decide if a DOM `DocumentFragment` should be returned, instead of a html |
| 470 |
* string (or a TrustedHTML object if Trusted Types are supported) */ |
| 471 |
let RETURN_DOM_FRAGMENT = false; |
| 472 |
/* Try to return a Trusted Type object instead of a string, return a string in |
| 473 |
* case Trusted Types are not supported */ |
| 474 |
let RETURN_TRUSTED_TYPE = false; |
| 475 |
/* Output should be free from DOM clobbering attacks? |
| 476 |
* This sanitizes markups named with colliding, clobberable built-in DOM APIs. |
| 477 |
*/ |
| 478 |
let SANITIZE_DOM = true; |
| 479 |
/* Achieve full DOM Clobbering protection by isolating the namespace of named |
| 480 |
* properties and JS variables, mitigating attacks that abuse the HTML/DOM spec rules. |
| 481 |
* |
| 482 |
* HTML/DOM spec rules that enable DOM Clobbering: |
| 483 |
* - Named Access on Window (§7.3.3) |
| 484 |
* - DOM Tree Accessors (§3.1.5) |
| 485 |
* - Form Element Parent-Child Relations (§4.10.3) |
| 486 |
* - Iframe srcdoc / Nested WindowProxies (§4.8.5) |
| 487 |
* - HTMLCollection (§4.2.10.2) |
| 488 |
* |
| 489 |
* Namespace isolation is implemented by prefixing `id` and `name` attributes |
| 490 |
* with a constant string, i.e., `user-content-` |
| 491 |
*/ |
| 492 |
let SANITIZE_NAMED_PROPS = false; |
| 493 |
const SANITIZE_NAMED_PROPS_PREFIX = 'user-content-'; |
| 494 |
/* Keep element content when removing element? */ |
| 495 |
let KEEP_CONTENT = true; |
| 496 |
/* If a `Node` is passed to sanitize(), then performs sanitization in-place instead |
| 497 |
* of importing it into a new Document and returning a sanitized copy */ |
| 498 |
let IN_PLACE = false; |
| 499 |
/* Allow usage of profiles like html, svg and mathMl */ |
| 500 |
let USE_PROFILES = {}; |
| 501 |
/* Tags to ignore content of when KEEP_CONTENT is true */ |
| 502 |
let FORBID_CONTENTS = null; |
| 503 |
const DEFAULT_FORBID_CONTENTS = addToSet({}, ['annotation-xml', 'audio', 'colgroup', 'desc', 'foreignobject', 'head', 'iframe', 'math', 'mi', 'mn', 'mo', 'ms', 'mtext', 'noembed', 'noframes', 'noscript', 'plaintext', 'script', 'style', 'svg', 'template', 'thead', 'title', 'video', 'xmp']); |
| 504 |
/* Tags that are safe for data: URIs */ |
| 505 |
let DATA_URI_TAGS = null; |
| 506 |
const DEFAULT_DATA_URI_TAGS = addToSet({}, ['audio', 'video', 'img', 'source', 'image', 'track']); |
| 507 |
/* Attributes safe for values like "javascript:" */ |
| 508 |
let URI_SAFE_ATTRIBUTES = null; |
| 509 |
const DEFAULT_URI_SAFE_ATTRIBUTES = addToSet({}, ['alt', 'class', 'for', 'id', 'label', 'name', 'pattern', 'placeholder', 'role', 'summary', 'title', 'value', 'style', 'xmlns']); |
| 510 |
const MATHML_NAMESPACE = 'http://www.w3.org/1998/Math/MathML'; |
| 511 |
const SVG_NAMESPACE = 'http://www.w3.org/2000/svg'; |
| 512 |
const HTML_NAMESPACE = 'http://www.w3.org/1999/xhtml'; |
| 513 |
/* Document namespace */ |
| 514 |
let NAMESPACE = HTML_NAMESPACE; |
| 515 |
let IS_EMPTY_INPUT = false; |
| 516 |
/* Allowed XHTML+XML namespaces */ |
| 517 |
let ALLOWED_NAMESPACES = null; |
| 518 |
const DEFAULT_ALLOWED_NAMESPACES = addToSet({}, [MATHML_NAMESPACE, SVG_NAMESPACE, HTML_NAMESPACE], stringToString); |
| 519 |
let MATHML_TEXT_INTEGRATION_POINTS = addToSet({}, ['mi', 'mo', 'mn', 'ms', 'mtext']); |
| 520 |
let HTML_INTEGRATION_POINTS = addToSet({}, ['annotation-xml']); |
| 521 |
// Certain elements are allowed in both SVG and HTML |
| 522 |
// namespace. We need to specify them explicitly |
| 523 |
// so that they don't get erroneously deleted from |
| 524 |
// HTML namespace. |
| 525 |
const COMMON_SVG_AND_HTML_ELEMENTS = addToSet({}, ['title', 'style', 'font', 'a', 'script']); |
| 526 |
/* Parsing of strict XHTML documents */ |
| 527 |
let PARSER_MEDIA_TYPE = null; |
| 528 |
const SUPPORTED_PARSER_MEDIA_TYPES = ['application/xhtml+xml', 'text/html']; |
| 529 |
const DEFAULT_PARSER_MEDIA_TYPE = 'text/html'; |
| 530 |
let transformCaseFunc = null; |
| 531 |
/* Keep a reference to config to pass to hooks */ |
| 532 |
let CONFIG = null; |
| 533 |
/* Ideally, do not touch anything below this line */ |
| 534 |
/* ______________________________________________ */ |
| 535 |
const formElement = document.createElement('form'); |
| 536 |
const isRegexOrFunction = function isRegexOrFunction(testValue) { |
| 537 |
return testValue instanceof RegExp || testValue instanceof Function; |
| 538 |
}; |
| 539 |
/** |
| 540 |
* _parseConfig |
| 541 |
* |
| 542 |
* @param cfg optional config literal |
| 543 |
*/ |
| 544 |
// eslint-disable-next-line complexity |
| 545 |
const _parseConfig = function _parseConfig() { |
| 546 |
let cfg = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : {}; |
| 547 |
if (CONFIG && CONFIG === cfg) { |
| 548 |
return; |
| 549 |
} |
| 550 |
/* Shield configuration object from tampering */ |
| 551 |
if (!cfg || typeof cfg !== 'object') { |
| 552 |
cfg = {}; |
| 553 |
} |
| 554 |
/* Shield configuration object from prototype pollution */ |
| 555 |
cfg = clone(cfg); |
| 556 |
PARSER_MEDIA_TYPE = |
| 557 |
// eslint-disable-next-line unicorn/prefer-includes |
| 558 |
SUPPORTED_PARSER_MEDIA_TYPES.indexOf(cfg.PARSER_MEDIA_TYPE) === -1 ? DEFAULT_PARSER_MEDIA_TYPE : cfg.PARSER_MEDIA_TYPE; |
| 559 |
// HTML tags and attributes are not case-sensitive, converting to lowercase. Keeping XHTML as is. |
| 560 |
transformCaseFunc = PARSER_MEDIA_TYPE === 'application/xhtml+xml' ? stringToString : stringToLowerCase; |
| 561 |
/* Set configuration parameters */ |
| 562 |
ALLOWED_TAGS = objectHasOwnProperty(cfg, 'ALLOWED_TAGS') ? addToSet({}, cfg.ALLOWED_TAGS, transformCaseFunc) : DEFAULT_ALLOWED_TAGS; |
| 563 |
ALLOWED_ATTR = objectHasOwnProperty(cfg, 'ALLOWED_ATTR') ? addToSet({}, cfg.ALLOWED_ATTR, transformCaseFunc) : DEFAULT_ALLOWED_ATTR; |
| 564 |
ALLOWED_NAMESPACES = objectHasOwnProperty(cfg, 'ALLOWED_NAMESPACES') ? addToSet({}, cfg.ALLOWED_NAMESPACES, stringToString) : DEFAULT_ALLOWED_NAMESPACES; |
| 565 |
URI_SAFE_ATTRIBUTES = objectHasOwnProperty(cfg, 'ADD_URI_SAFE_ATTR') ? addToSet(clone(DEFAULT_URI_SAFE_ATTRIBUTES), cfg.ADD_URI_SAFE_ATTR, transformCaseFunc) : DEFAULT_URI_SAFE_ATTRIBUTES; |
| 566 |
DATA_URI_TAGS = objectHasOwnProperty(cfg, 'ADD_DATA_URI_TAGS') ? addToSet(clone(DEFAULT_DATA_URI_TAGS), cfg.ADD_DATA_URI_TAGS, transformCaseFunc) : DEFAULT_DATA_URI_TAGS; |
| 567 |
FORBID_CONTENTS = objectHasOwnProperty(cfg, 'FORBID_CONTENTS') ? addToSet({}, cfg.FORBID_CONTENTS, transformCaseFunc) : DEFAULT_FORBID_CONTENTS; |
| 568 |
FORBID_TAGS = objectHasOwnProperty(cfg, 'FORBID_TAGS') ? addToSet({}, cfg.FORBID_TAGS, transformCaseFunc) : clone({}); |
| 569 |
FORBID_ATTR = objectHasOwnProperty(cfg, 'FORBID_ATTR') ? addToSet({}, cfg.FORBID_ATTR, transformCaseFunc) : clone({}); |
| 570 |
USE_PROFILES = objectHasOwnProperty(cfg, 'USE_PROFILES') ? cfg.USE_PROFILES : false; |
| 571 |
ALLOW_ARIA_ATTR = cfg.ALLOW_ARIA_ATTR !== false; // Default true |
| 572 |
ALLOW_DATA_ATTR = cfg.ALLOW_DATA_ATTR !== false; // Default true |
| 573 |
ALLOW_UNKNOWN_PROTOCOLS = cfg.ALLOW_UNKNOWN_PROTOCOLS || false; // Default false |
| 574 |
ALLOW_SELF_CLOSE_IN_ATTR = cfg.ALLOW_SELF_CLOSE_IN_ATTR !== false; // Default true |
| 575 |
SAFE_FOR_TEMPLATES = cfg.SAFE_FOR_TEMPLATES || false; // Default false |
| 576 |
SAFE_FOR_XML = cfg.SAFE_FOR_XML !== false; // Default true |
| 577 |
WHOLE_DOCUMENT = cfg.WHOLE_DOCUMENT || false; // Default false |
| 578 |
RETURN_DOM = cfg.RETURN_DOM || false; // Default false |
| 579 |
RETURN_DOM_FRAGMENT = cfg.RETURN_DOM_FRAGMENT || false; // Default false |
| 580 |
RETURN_TRUSTED_TYPE = cfg.RETURN_TRUSTED_TYPE || false; // Default false |
| 581 |
FORCE_BODY = cfg.FORCE_BODY || false; // Default false |
| 582 |
SANITIZE_DOM = cfg.SANITIZE_DOM !== false; // Default true |
| 583 |
SANITIZE_NAMED_PROPS = cfg.SANITIZE_NAMED_PROPS || false; // Default false |
| 584 |
KEEP_CONTENT = cfg.KEEP_CONTENT !== false; // Default true |
| 585 |
IN_PLACE = cfg.IN_PLACE || false; // Default false |
| 586 |
IS_ALLOWED_URI$1 = cfg.ALLOWED_URI_REGEXP || IS_ALLOWED_URI; |
| 587 |
NAMESPACE = cfg.NAMESPACE || HTML_NAMESPACE; |
| 588 |
MATHML_TEXT_INTEGRATION_POINTS = cfg.MATHML_TEXT_INTEGRATION_POINTS || MATHML_TEXT_INTEGRATION_POINTS; |
| 589 |
HTML_INTEGRATION_POINTS = cfg.HTML_INTEGRATION_POINTS || HTML_INTEGRATION_POINTS; |
| 590 |
CUSTOM_ELEMENT_HANDLING = cfg.CUSTOM_ELEMENT_HANDLING || {}; |
| 591 |
if (cfg.CUSTOM_ELEMENT_HANDLING && isRegexOrFunction(cfg.CUSTOM_ELEMENT_HANDLING.tagNameCheck)) { |
| 592 |
CUSTOM_ELEMENT_HANDLING.tagNameCheck = cfg.CUSTOM_ELEMENT_HANDLING.tagNameCheck; |
| 593 |
} |
| 594 |
if (cfg.CUSTOM_ELEMENT_HANDLING && isRegexOrFunction(cfg.CUSTOM_ELEMENT_HANDLING.attributeNameCheck)) { |
| 595 |
CUSTOM_ELEMENT_HANDLING.attributeNameCheck = cfg.CUSTOM_ELEMENT_HANDLING.attributeNameCheck; |
| 596 |
} |
| 597 |
if (cfg.CUSTOM_ELEMENT_HANDLING && typeof cfg.CUSTOM_ELEMENT_HANDLING.allowCustomizedBuiltInElements === 'boolean') { |
| 598 |
CUSTOM_ELEMENT_HANDLING.allowCustomizedBuiltInElements = cfg.CUSTOM_ELEMENT_HANDLING.allowCustomizedBuiltInElements; |
| 599 |
} |
| 600 |
if (SAFE_FOR_TEMPLATES) { |
| 601 |
ALLOW_DATA_ATTR = false; |
| 602 |
} |
| 603 |
if (RETURN_DOM_FRAGMENT) { |
| 604 |
RETURN_DOM = true; |
| 605 |
} |
| 606 |
/* Parse profile info */ |
| 607 |
if (USE_PROFILES) { |
| 608 |
ALLOWED_TAGS = addToSet({}, text); |
| 609 |
ALLOWED_ATTR = []; |
| 610 |
if (USE_PROFILES.html === true) { |
| 611 |
addToSet(ALLOWED_TAGS, html$1); |
| 612 |
addToSet(ALLOWED_ATTR, html); |
| 613 |
} |
| 614 |
if (USE_PROFILES.svg === true) { |
| 615 |
addToSet(ALLOWED_TAGS, svg$1); |
| 616 |
addToSet(ALLOWED_ATTR, svg); |
| 617 |
addToSet(ALLOWED_ATTR, xml); |
| 618 |
} |
| 619 |
if (USE_PROFILES.svgFilters === true) { |
| 620 |
addToSet(ALLOWED_TAGS, svgFilters); |
| 621 |
addToSet(ALLOWED_ATTR, svg); |
| 622 |
addToSet(ALLOWED_ATTR, xml); |
| 623 |
} |
| 624 |
if (USE_PROFILES.mathMl === true) { |
| 625 |
addToSet(ALLOWED_TAGS, mathMl$1); |
| 626 |
addToSet(ALLOWED_ATTR, mathMl); |
| 627 |
addToSet(ALLOWED_ATTR, xml); |
| 628 |
} |
| 629 |
} |
| 630 |
/* Merge configuration parameters */ |
| 631 |
if (cfg.ADD_TAGS) { |
| 632 |
if (typeof cfg.ADD_TAGS === 'function') { |
| 633 |
EXTRA_ELEMENT_HANDLING.tagCheck = cfg.ADD_TAGS; |
| 634 |
} else { |
| 635 |
if (ALLOWED_TAGS === DEFAULT_ALLOWED_TAGS) { |
| 636 |
ALLOWED_TAGS = clone(ALLOWED_TAGS); |
| 637 |
} |
| 638 |
addToSet(ALLOWED_TAGS, cfg.ADD_TAGS, transformCaseFunc); |
| 639 |
} |
| 640 |
} |
| 641 |
if (cfg.ADD_ATTR) { |
| 642 |
if (typeof cfg.ADD_ATTR === 'function') { |
| 643 |
EXTRA_ELEMENT_HANDLING.attributeCheck = cfg.ADD_ATTR; |
| 644 |
} else { |
| 645 |
if (ALLOWED_ATTR === DEFAULT_ALLOWED_ATTR) { |
| 646 |
ALLOWED_ATTR = clone(ALLOWED_ATTR); |
| 647 |
} |
| 648 |
addToSet(ALLOWED_ATTR, cfg.ADD_ATTR, transformCaseFunc); |
| 649 |
} |
| 650 |
} |
| 651 |
if (cfg.ADD_URI_SAFE_ATTR) { |
| 652 |
addToSet(URI_SAFE_ATTRIBUTES, cfg.ADD_URI_SAFE_ATTR, transformCaseFunc); |
| 653 |
} |
| 654 |
if (cfg.FORBID_CONTENTS) { |
| 655 |
if (FORBID_CONTENTS === DEFAULT_FORBID_CONTENTS) { |
| 656 |
FORBID_CONTENTS = clone(FORBID_CONTENTS); |
| 657 |
} |
| 658 |
addToSet(FORBID_CONTENTS, cfg.FORBID_CONTENTS, transformCaseFunc); |
| 659 |
} |
| 660 |
/* Add #text in case KEEP_CONTENT is set to true */ |
| 661 |
if (KEEP_CONTENT) { |
| 662 |
ALLOWED_TAGS['#text'] = true; |
| 663 |
} |
| 664 |
/* Add html, head and body to ALLOWED_TAGS in case WHOLE_DOCUMENT is true */ |
| 665 |
if (WHOLE_DOCUMENT) { |
| 666 |
addToSet(ALLOWED_TAGS, ['html', 'head', 'body']); |
| 667 |
} |
| 668 |
/* Add tbody to ALLOWED_TAGS in case tables are permitted, see #286, #365 */ |
| 669 |
if (ALLOWED_TAGS.table) { |
| 670 |
addToSet(ALLOWED_TAGS, ['tbody']); |
| 671 |
delete FORBID_TAGS.tbody; |
| 672 |
} |
| 673 |
if (cfg.TRUSTED_TYPES_POLICY) { |
| 674 |
if (typeof cfg.TRUSTED_TYPES_POLICY.createHTML !== 'function') { |
| 675 |
throw typeErrorCreate('TRUSTED_TYPES_POLICY configuration option must provide a "createHTML" hook.'); |
| 676 |
} |
| 677 |
if (typeof cfg.TRUSTED_TYPES_POLICY.createScriptURL !== 'function') { |
| 678 |
throw typeErrorCreate('TRUSTED_TYPES_POLICY configuration option must provide a "createScriptURL" hook.'); |
| 679 |
} |
| 680 |
// Overwrite existing TrustedTypes policy. |
| 681 |
trustedTypesPolicy = cfg.TRUSTED_TYPES_POLICY; |
| 682 |
// Sign local variables required by `sanitize`. |
| 683 |
emptyHTML = trustedTypesPolicy.createHTML(''); |
| 684 |
} else { |
| 685 |
// Uninitialized policy, attempt to initialize the internal dompurify policy. |
| 686 |
if (trustedTypesPolicy === undefined) { |
| 687 |
trustedTypesPolicy = _createTrustedTypesPolicy(trustedTypes, currentScript); |
| 688 |
} |
| 689 |
// If creating the internal policy succeeded sign internal variables. |
| 690 |
if (trustedTypesPolicy !== null && typeof emptyHTML === 'string') { |
| 691 |
emptyHTML = trustedTypesPolicy.createHTML(''); |
| 692 |
} |
| 693 |
} |
| 694 |
// Prevent further manipulation of configuration. |
| 695 |
// Not available in IE8, Safari 5, etc. |
| 696 |
if (freeze) { |
| 697 |
freeze(cfg); |
| 698 |
} |
| 699 |
CONFIG = cfg; |
| 700 |
}; |
| 701 |
/* Keep track of all possible SVG and MathML tags |
| 702 |
* so that we can perform the namespace checks |
| 703 |
* correctly. */ |
| 704 |
const ALL_SVG_TAGS = addToSet({}, [...svg$1, ...svgFilters, ...svgDisallowed]); |
| 705 |
const ALL_MATHML_TAGS = addToSet({}, [...mathMl$1, ...mathMlDisallowed]); |
| 706 |
/** |
| 707 |
* @param element a DOM element whose namespace is being checked |
| 708 |
* @returns Return false if the element has a |
| 709 |
* namespace that a spec-compliant parser would never |
| 710 |
* return. Return true otherwise. |
| 711 |
*/ |
| 712 |
const _checkValidNamespace = function _checkValidNamespace(element) { |
| 713 |
let parent = getParentNode(element); |
| 714 |
// In JSDOM, if we're inside shadow DOM, then parentNode |
| 715 |
// can be null. We just simulate parent in this case. |
| 716 |
if (!parent || !parent.tagName) { |
| 717 |
parent = { |
| 718 |
namespaceURI: NAMESPACE, |
| 719 |
tagName: 'template' |
| 720 |
}; |
| 721 |
} |
| 722 |
const tagName = stringToLowerCase(element.tagName); |
| 723 |
const parentTagName = stringToLowerCase(parent.tagName); |
| 724 |
if (!ALLOWED_NAMESPACES[element.namespaceURI]) { |
| 725 |
return false; |
| 726 |
} |
| 727 |
if (element.namespaceURI === SVG_NAMESPACE) { |
| 728 |
// The only way to switch from HTML namespace to SVG |
| 729 |
// is via <svg>. If it happens via any other tag, then |
| 730 |
// it should be killed. |
| 731 |
if (parent.namespaceURI === HTML_NAMESPACE) { |
| 732 |
return tagName === 'svg'; |
| 733 |
} |
| 734 |
// The only way to switch from MathML to SVG is via` |
| 735 |
// svg if parent is either <annotation-xml> or MathML |
| 736 |
// text integration points. |
| 737 |
if (parent.namespaceURI === MATHML_NAMESPACE) { |
| 738 |
return tagName === 'svg' && (parentTagName === 'annotation-xml' || MATHML_TEXT_INTEGRATION_POINTS[parentTagName]); |
| 739 |
} |
| 740 |
// We only allow elements that are defined in SVG |
| 741 |
// spec. All others are disallowed in SVG namespace. |
| 742 |
return Boolean(ALL_SVG_TAGS[tagName]); |
| 743 |
} |
| 744 |
if (element.namespaceURI === MATHML_NAMESPACE) { |
| 745 |
// The only way to switch from HTML namespace to MathML |
| 746 |
// is via <math>. If it happens via any other tag, then |
| 747 |
// it should be killed. |
| 748 |
if (parent.namespaceURI === HTML_NAMESPACE) { |
| 749 |
return tagName === 'math'; |
| 750 |
} |
| 751 |
// The only way to switch from SVG to MathML is via |
| 752 |
// <math> and HTML integration points |
| 753 |
if (parent.namespaceURI === SVG_NAMESPACE) { |
| 754 |
return tagName === 'math' && HTML_INTEGRATION_POINTS[parentTagName]; |
| 755 |
} |
| 756 |
// We only allow elements that are defined in MathML |
| 757 |
// spec. All others are disallowed in MathML namespace. |
| 758 |
return Boolean(ALL_MATHML_TAGS[tagName]); |
| 759 |
} |
| 760 |
if (element.namespaceURI === HTML_NAMESPACE) { |
| 761 |
// The only way to switch from SVG to HTML is via |
| 762 |
// HTML integration points, and from MathML to HTML |
| 763 |
// is via MathML text integration points |
| 764 |
if (parent.namespaceURI === SVG_NAMESPACE && !HTML_INTEGRATION_POINTS[parentTagName]) { |
| 765 |
return false; |
| 766 |
} |
| 767 |
if (parent.namespaceURI === MATHML_NAMESPACE && !MATHML_TEXT_INTEGRATION_POINTS[parentTagName]) { |
| 768 |
return false; |
| 769 |
} |
| 770 |
// We disallow tags that are specific for MathML |
| 771 |
// or SVG and should never appear in HTML namespace |
| 772 |
return !ALL_MATHML_TAGS[tagName] && (COMMON_SVG_AND_HTML_ELEMENTS[tagName] || !ALL_SVG_TAGS[tagName]); |
| 773 |
} |
| 774 |
// For XHTML and XML documents that support custom namespaces |
| 775 |
if (PARSER_MEDIA_TYPE === 'application/xhtml+xml' && ALLOWED_NAMESPACES[element.namespaceURI]) { |
| 776 |
return true; |
| 777 |
} |
| 778 |
// The code should never reach this place (this means |
| 779 |
// that the element somehow got namespace that is not |
| 780 |
// HTML, SVG, MathML or allowed via ALLOWED_NAMESPACES). |
| 781 |
// Return false just in case. |
| 782 |
return false; |
| 783 |
}; |
| 784 |
/** |
| 785 |
* _forceRemove |
| 786 |
* |
| 787 |
* @param node a DOM node |
| 788 |
*/ |
| 789 |
const _forceRemove = function _forceRemove(node) { |
| 790 |
arrayPush(DOMPurify.removed, { |
| 791 |
element: node |
| 792 |
}); |
| 793 |
try { |
| 794 |
// eslint-disable-next-line unicorn/prefer-dom-node-remove |
| 795 |
getParentNode(node).removeChild(node); |
| 796 |
} catch (_) { |
| 797 |
remove(node); |
| 798 |
} |
| 799 |
}; |
| 800 |
/** |
| 801 |
* _removeAttribute |
| 802 |
* |
| 803 |
* @param name an Attribute name |
| 804 |
* @param element a DOM node |
| 805 |
*/ |
| 806 |
const _removeAttribute = function _removeAttribute(name, element) { |
| 807 |
try { |
| 808 |
arrayPush(DOMPurify.removed, { |
| 809 |
attribute: element.getAttributeNode(name), |
| 810 |
from: element |
| 811 |
}); |
| 812 |
} catch (_) { |
| 813 |
arrayPush(DOMPurify.removed, { |
| 814 |
attribute: null, |
| 815 |
from: element |
| 816 |
}); |
| 817 |
} |
| 818 |
element.removeAttribute(name); |
| 819 |
// We void attribute values for unremovable "is" attributes |
| 820 |
if (name === 'is') { |
| 821 |
if (RETURN_DOM || RETURN_DOM_FRAGMENT) { |
| 822 |
try { |
| 823 |
_forceRemove(element); |
| 824 |
} catch (_) {} |
| 825 |
} else { |
| 826 |
try { |
| 827 |
element.setAttribute(name, ''); |
| 828 |
} catch (_) {} |
| 829 |
} |
| 830 |
} |
| 831 |
}; |
| 832 |
/** |
| 833 |
* _initDocument |
| 834 |
* |
| 835 |
* @param dirty - a string of dirty markup |
| 836 |
* @return a DOM, filled with the dirty markup |
| 837 |
*/ |
| 838 |
const _initDocument = function _initDocument(dirty) { |
| 839 |
/* Create a HTML document */ |
| 840 |
let doc = null; |
| 841 |
let leadingWhitespace = null; |
| 842 |
if (FORCE_BODY) { |
| 843 |
dirty = '<remove></remove>' + dirty; |
| 844 |
} else { |
| 845 |
/* If FORCE_BODY isn't used, leading whitespace needs to be preserved manually */ |
| 846 |
const matches = stringMatch(dirty, /^[\r\n\t ]+/); |
| 847 |
leadingWhitespace = matches && matches[0]; |
| 848 |
} |
| 849 |
if (PARSER_MEDIA_TYPE === 'application/xhtml+xml' && NAMESPACE === HTML_NAMESPACE) { |
| 850 |
// Root of XHTML doc must contain xmlns declaration (see https://www.w3.org/TR/xhtml1/normative.html#strict) |
| 851 |
dirty = '<html xmlns="http://www.w3.org/1999/xhtml"><head></head><body>' + dirty + '</body></html>'; |
| 852 |
} |
| 853 |
const dirtyPayload = trustedTypesPolicy ? trustedTypesPolicy.createHTML(dirty) : dirty; |
| 854 |
/* |
| 855 |
* Use the DOMParser API by default, fallback later if needs be |
| 856 |
* DOMParser not work for svg when has multiple root element. |
| 857 |
*/ |
| 858 |
if (NAMESPACE === HTML_NAMESPACE) { |
| 859 |
try { |
| 860 |
doc = new DOMParser().parseFromString(dirtyPayload, PARSER_MEDIA_TYPE); |
| 861 |
} catch (_) {} |
| 862 |
} |
| 863 |
/* Use createHTMLDocument in case DOMParser is not available */ |
| 864 |
if (!doc || !doc.documentElement) { |
| 865 |
doc = implementation.createDocument(NAMESPACE, 'template', null); |
| 866 |
try { |
| 867 |
doc.documentElement.innerHTML = IS_EMPTY_INPUT ? emptyHTML : dirtyPayload; |
| 868 |
} catch (_) { |
| 869 |
// Syntax error if dirtyPayload is invalid xml |
| 870 |
} |
| 871 |
} |
| 872 |
const body = doc.body || doc.documentElement; |
| 873 |
if (dirty && leadingWhitespace) { |
| 874 |
body.insertBefore(document.createTextNode(leadingWhitespace), body.childNodes[0] || null); |
| 875 |
} |
| 876 |
/* Work on whole document or just its body */ |
| 877 |
if (NAMESPACE === HTML_NAMESPACE) { |
| 878 |
return getElementsByTagName.call(doc, WHOLE_DOCUMENT ? 'html' : 'body')[0]; |
| 879 |
} |
| 880 |
return WHOLE_DOCUMENT ? doc.documentElement : body; |
| 881 |
}; |
| 882 |
/** |
| 883 |
* Creates a NodeIterator object that you can use to traverse filtered lists of nodes or elements in a document. |
| 884 |
* |
| 885 |
* @param root The root element or node to start traversing on. |
| 886 |
* @return The created NodeIterator |
| 887 |
*/ |
| 888 |
const _createNodeIterator = function _createNodeIterator(root) { |
| 889 |
return createNodeIterator.call(root.ownerDocument || root, root, |
| 890 |
// eslint-disable-next-line no-bitwise |
| 891 |
NodeFilter.SHOW_ELEMENT | NodeFilter.SHOW_COMMENT | NodeFilter.SHOW_TEXT | NodeFilter.SHOW_PROCESSING_INSTRUCTION | NodeFilter.SHOW_CDATA_SECTION, null); |
| 892 |
}; |
| 893 |
/** |
| 894 |
* _isClobbered |
| 895 |
* |
| 896 |
* @param element element to check for clobbering attacks |
| 897 |
* @return true if clobbered, false if safe |
| 898 |
*/ |
| 899 |
const _isClobbered = function _isClobbered(element) { |
| 900 |
return element instanceof HTMLFormElement && (typeof element.nodeName !== 'string' || typeof element.textContent !== 'string' || typeof element.removeChild !== 'function' || !(element.attributes instanceof NamedNodeMap) || typeof element.removeAttribute !== 'function' || typeof element.setAttribute !== 'function' || typeof element.namespaceURI !== 'string' || typeof element.insertBefore !== 'function' || typeof element.hasChildNodes !== 'function'); |
| 901 |
}; |
| 902 |
/** |
| 903 |
* Checks whether the given object is a DOM node. |
| 904 |
* |
| 905 |
* @param value object to check whether it's a DOM node |
| 906 |
* @return true is object is a DOM node |
| 907 |
*/ |
| 908 |
const _isNode = function _isNode(value) { |
| 909 |
return typeof Node === 'function' && value instanceof Node; |
| 910 |
}; |
| 911 |
function _executeHooks(hooks, currentNode, data) { |
| 912 |
arrayForEach(hooks, hook => { |
| 913 |
hook.call(DOMPurify, currentNode, data, CONFIG); |
| 914 |
}); |
| 915 |
} |
| 916 |
/** |
| 917 |
* _sanitizeElements |
| 918 |
* |
| 919 |
* @protect nodeName |
| 920 |
* @protect textContent |
| 921 |
* @protect removeChild |
| 922 |
* @param currentNode to check for permission to exist |
| 923 |
* @return true if node was killed, false if left alive |
| 924 |
*/ |
| 925 |
const _sanitizeElements = function _sanitizeElements(currentNode) { |
| 926 |
let content = null; |
| 927 |
/* Execute a hook if present */ |
| 928 |
_executeHooks(hooks.beforeSanitizeElements, currentNode, null); |
| 929 |
/* Check if element is clobbered or can clobber */ |
| 930 |
if (_isClobbered(currentNode)) { |
| 931 |
_forceRemove(currentNode); |
| 932 |
return true; |
| 933 |
} |
| 934 |
/* Now let's check the element's type and name */ |
| 935 |
const tagName = transformCaseFunc(currentNode.nodeName); |
| 936 |
/* Execute a hook if present */ |
| 937 |
_executeHooks(hooks.uponSanitizeElement, currentNode, { |
| 938 |
tagName, |
| 939 |
allowedTags: ALLOWED_TAGS |
| 940 |
}); |
| 941 |
/* Detect mXSS attempts abusing namespace confusion */ |
| 942 |
if (SAFE_FOR_XML && currentNode.hasChildNodes() && !_isNode(currentNode.firstElementChild) && regExpTest(/<[/\w!]/g, currentNode.innerHTML) && regExpTest(/<[/\w!]/g, currentNode.textContent)) { |
| 943 |
_forceRemove(currentNode); |
| 944 |
return true; |
| 945 |
} |
| 946 |
/* Remove any occurrence of processing instructions */ |
| 947 |
if (currentNode.nodeType === NODE_TYPE.progressingInstruction) { |
| 948 |
_forceRemove(currentNode); |
| 949 |
return true; |
| 950 |
} |
| 951 |
/* Remove any kind of possibly harmful comments */ |
| 952 |
if (SAFE_FOR_XML && currentNode.nodeType === NODE_TYPE.comment && regExpTest(/<[/\w]/g, currentNode.data)) { |
| 953 |
_forceRemove(currentNode); |
| 954 |
return true; |
| 955 |
} |
| 956 |
/* Remove element if anything forbids its presence */ |
| 957 |
if (!(EXTRA_ELEMENT_HANDLING.tagCheck instanceof Function && EXTRA_ELEMENT_HANDLING.tagCheck(tagName)) && (!ALLOWED_TAGS[tagName] || FORBID_TAGS[tagName])) { |
| 958 |
/* Check if we have a custom element to handle */ |
| 959 |
if (!FORBID_TAGS[tagName] && _isBasicCustomElement(tagName)) { |
| 960 |
if (CUSTOM_ELEMENT_HANDLING.tagNameCheck instanceof RegExp && regExpTest(CUSTOM_ELEMENT_HANDLING.tagNameCheck, tagName)) { |
| 961 |
return false; |
| 962 |
} |
| 963 |
if (CUSTOM_ELEMENT_HANDLING.tagNameCheck instanceof Function && CUSTOM_ELEMENT_HANDLING.tagNameCheck(tagName)) { |
| 964 |
return false; |
| 965 |
} |
| 966 |
} |
| 967 |
/* Keep content except for bad-listed elements */ |
| 968 |
if (KEEP_CONTENT && !FORBID_CONTENTS[tagName]) { |
| 969 |
const parentNode = getParentNode(currentNode) || currentNode.parentNode; |
| 970 |
const childNodes = getChildNodes(currentNode) || currentNode.childNodes; |
| 971 |
if (childNodes && parentNode) { |
| 972 |
const childCount = childNodes.length; |
| 973 |
for (let i = childCount - 1; i >= 0; --i) { |
| 974 |
const childClone = cloneNode(childNodes[i], true); |
| 975 |
childClone.__removalCount = (currentNode.__removalCount || 0) + 1; |
| 976 |
parentNode.insertBefore(childClone, getNextSibling(currentNode)); |
| 977 |
} |
| 978 |
} |
| 979 |
} |
| 980 |
_forceRemove(currentNode); |
| 981 |
return true; |
| 982 |
} |
| 983 |
/* Check whether element has a valid namespace */ |
| 984 |
if (currentNode instanceof Element && !_checkValidNamespace(currentNode)) { |
| 985 |
_forceRemove(currentNode); |
| 986 |
return true; |
| 987 |
} |
| 988 |
/* Make sure that older browsers don't get fallback-tag mXSS */ |
| 989 |
if ((tagName === 'noscript' || tagName === 'noembed' || tagName === 'noframes') && regExpTest(/<\/no(script|embed|frames)/i, currentNode.innerHTML)) { |
| 990 |
_forceRemove(currentNode); |
| 991 |
return true; |
| 992 |
} |
| 993 |
/* Sanitize element content to be template-safe */ |
| 994 |
if (SAFE_FOR_TEMPLATES && currentNode.nodeType === NODE_TYPE.text) { |
| 995 |
/* Get the element's text content */ |
| 996 |
content = currentNode.textContent; |
| 997 |
arrayForEach([MUSTACHE_EXPR, ERB_EXPR, TMPLIT_EXPR], expr => { |
| 998 |
content = stringReplace(content, expr, ' '); |
| 999 |
}); |
| 1000 |
if (currentNode.textContent !== content) { |
| 1001 |
arrayPush(DOMPurify.removed, { |
| 1002 |
element: currentNode.cloneNode() |
| 1003 |
}); |
| 1004 |
currentNode.textContent = content; |
| 1005 |
} |
| 1006 |
} |
| 1007 |
/* Execute a hook if present */ |
| 1008 |
_executeHooks(hooks.afterSanitizeElements, currentNode, null); |
| 1009 |
return false; |
| 1010 |
}; |
| 1011 |
/** |
| 1012 |
* _isValidAttribute |
| 1013 |
* |
| 1014 |
* @param lcTag Lowercase tag name of containing element. |
| 1015 |
* @param lcName Lowercase attribute name. |
| 1016 |
* @param value Attribute value. |
| 1017 |
* @return Returns true if `value` is valid, otherwise false. |
| 1018 |
*/ |
| 1019 |
// eslint-disable-next-line complexity |
| 1020 |
const _isValidAttribute = function _isValidAttribute(lcTag, lcName, value) { |
| 1021 |
/* Make sure attribute cannot clobber */ |
| 1022 |
if (SANITIZE_DOM && (lcName === 'id' || lcName === 'name') && (value in document || value in formElement)) { |
| 1023 |
return false; |
| 1024 |
} |
| 1025 |
/* Allow valid data-* attributes: At least one character after "-" |
| 1026 |
(https://html.spec.whatwg.org/multipage/dom.html#embedding-custom-non-visible-data-with-the-data-*-attributes) |
| 1027 |
XML-compatible (https://html.spec.whatwg.org/multipage/infrastructure.html#xml-compatible and http://www.w3.org/TR/xml/#d0e804) |
| 1028 |
We don't need to check the value; it's always URI safe. */ |
| 1029 |
if (ALLOW_DATA_ATTR && !FORBID_ATTR[lcName] && regExpTest(DATA_ATTR, lcName)) ; else if (ALLOW_ARIA_ATTR && regExpTest(ARIA_ATTR, lcName)) ; else if (EXTRA_ELEMENT_HANDLING.attributeCheck instanceof Function && EXTRA_ELEMENT_HANDLING.attributeCheck(lcName, lcTag)) ; else if (!ALLOWED_ATTR[lcName] || FORBID_ATTR[lcName]) { |
| 1030 |
if ( |
| 1031 |
// First condition does a very basic check if a) it's basically a valid custom element tagname AND |
| 1032 |
// b) if the tagName passes whatever the user has configured for CUSTOM_ELEMENT_HANDLING.tagNameCheck |
| 1033 |
// and c) if the attribute name passes whatever the user has configured for CUSTOM_ELEMENT_HANDLING.attributeNameCheck |
| 1034 |
_isBasicCustomElement(lcTag) && (CUSTOM_ELEMENT_HANDLING.tagNameCheck instanceof RegExp && regExpTest(CUSTOM_ELEMENT_HANDLING.tagNameCheck, lcTag) || CUSTOM_ELEMENT_HANDLING.tagNameCheck instanceof Function && CUSTOM_ELEMENT_HANDLING.tagNameCheck(lcTag)) && (CUSTOM_ELEMENT_HANDLING.attributeNameCheck instanceof RegExp && regExpTest(CUSTOM_ELEMENT_HANDLING.attributeNameCheck, lcName) || CUSTOM_ELEMENT_HANDLING.attributeNameCheck instanceof Function && CUSTOM_ELEMENT_HANDLING.attributeNameCheck(lcName, lcTag)) || |
| 1035 |
// Alternative, second condition checks if it's an `is`-attribute, AND |
| 1036 |
// the value passes whatever the user has configured for CUSTOM_ELEMENT_HANDLING.tagNameCheck |
| 1037 |
lcName === 'is' && CUSTOM_ELEMENT_HANDLING.allowCustomizedBuiltInElements && (CUSTOM_ELEMENT_HANDLING.tagNameCheck instanceof RegExp && regExpTest(CUSTOM_ELEMENT_HANDLING.tagNameCheck, value) || CUSTOM_ELEMENT_HANDLING.tagNameCheck instanceof Function && CUSTOM_ELEMENT_HANDLING.tagNameCheck(value))) ; else { |
| 1038 |
return false; |
| 1039 |
} |
| 1040 |
/* Check value is safe. First, is attr inert? If so, is safe */ |
| 1041 |
} else if (URI_SAFE_ATTRIBUTES[lcName]) ; else if (regExpTest(IS_ALLOWED_URI$1, stringReplace(value, ATTR_WHITESPACE, ''))) ; else if ((lcName === 'src' || lcName === 'xlink:href' || lcName === 'href') && lcTag !== 'script' && stringIndexOf(value, 'data:') === 0 && DATA_URI_TAGS[lcTag]) ; else if (ALLOW_UNKNOWN_PROTOCOLS && !regExpTest(IS_SCRIPT_OR_DATA, stringReplace(value, ATTR_WHITESPACE, ''))) ; else if (value) { |
| 1042 |
return false; |
| 1043 |
} else ; |
| 1044 |
return true; |
| 1045 |
}; |
| 1046 |
/** |
| 1047 |
* _isBasicCustomElement |
| 1048 |
* checks if at least one dash is included in tagName, and it's not the first char |
| 1049 |
* for more sophisticated checking see https://github.com/sindresorhus/validate-element-name |
| 1050 |
* |
| 1051 |
* @param tagName name of the tag of the node to sanitize |
| 1052 |
* @returns Returns true if the tag name meets the basic criteria for a custom element, otherwise false. |
| 1053 |
*/ |
| 1054 |
const _isBasicCustomElement = function _isBasicCustomElement(tagName) { |
| 1055 |
return tagName !== 'annotation-xml' && stringMatch(tagName, CUSTOM_ELEMENT); |
| 1056 |
}; |
| 1057 |
/** |
| 1058 |
* _sanitizeAttributes |
| 1059 |
* |
| 1060 |
* @protect attributes |
| 1061 |
* @protect nodeName |
| 1062 |
* @protect removeAttribute |
| 1063 |
* @protect setAttribute |
| 1064 |
* |
| 1065 |
* @param currentNode to sanitize |
| 1066 |
*/ |
| 1067 |
const _sanitizeAttributes = function _sanitizeAttributes(currentNode) { |
| 1068 |
/* Execute a hook if present */ |
| 1069 |
_executeHooks(hooks.beforeSanitizeAttributes, currentNode, null); |
| 1070 |
const { |
| 1071 |
attributes |
| 1072 |
} = currentNode; |
| 1073 |
/* Check if we have attributes; if not we might have a text node */ |
| 1074 |
if (!attributes || _isClobbered(currentNode)) { |
| 1075 |
return; |
| 1076 |
} |
| 1077 |
const hookEvent = { |
| 1078 |
attrName: '', |
| 1079 |
attrValue: '', |
| 1080 |
keepAttr: true, |
| 1081 |
allowedAttributes: ALLOWED_ATTR, |
| 1082 |
forceKeepAttr: undefined |
| 1083 |
}; |
| 1084 |
let l = attributes.length; |
| 1085 |
/* Go backwards over all attributes; safely remove bad ones */ |
| 1086 |
while (l--) { |
| 1087 |
const attr = attributes[l]; |
| 1088 |
const { |
| 1089 |
name, |
| 1090 |
namespaceURI, |
| 1091 |
value: attrValue |
| 1092 |
} = attr; |
| 1093 |
const lcName = transformCaseFunc(name); |
| 1094 |
const initValue = attrValue; |
| 1095 |
let value = name === 'value' ? initValue : stringTrim(initValue); |
| 1096 |
/* Execute a hook if present */ |
| 1097 |
hookEvent.attrName = lcName; |
| 1098 |
hookEvent.attrValue = value; |
| 1099 |
hookEvent.keepAttr = true; |
| 1100 |
hookEvent.forceKeepAttr = undefined; // Allows developers to see this is a property they can set |
| 1101 |
_executeHooks(hooks.uponSanitizeAttribute, currentNode, hookEvent); |
| 1102 |
value = hookEvent.attrValue; |
| 1103 |
/* Full DOM Clobbering protection via namespace isolation, |
| 1104 |
* Prefix id and name attributes with `user-content-` |
| 1105 |
*/ |
| 1106 |
if (SANITIZE_NAMED_PROPS && (lcName === 'id' || lcName === 'name')) { |
| 1107 |
// Remove the attribute with this value |
| 1108 |
_removeAttribute(name, currentNode); |
| 1109 |
// Prefix the value and later re-create the attribute with the sanitized value |
| 1110 |
value = SANITIZE_NAMED_PROPS_PREFIX + value; |
| 1111 |
} |
| 1112 |
/* Work around a security issue with comments inside attributes */ |
| 1113 |
if (SAFE_FOR_XML && regExpTest(/((--!?|])>)|<\/(style|title|textarea)/i, value)) { |
| 1114 |
_removeAttribute(name, currentNode); |
| 1115 |
continue; |
| 1116 |
} |
| 1117 |
/* Make sure we cannot easily use animated hrefs, even if animations are allowed */ |
| 1118 |
if (lcName === 'attributename' && stringMatch(value, 'href')) { |
| 1119 |
_removeAttribute(name, currentNode); |
| 1120 |
continue; |
| 1121 |
} |
| 1122 |
/* Did the hooks approve of the attribute? */ |
| 1123 |
if (hookEvent.forceKeepAttr) { |
| 1124 |
continue; |
| 1125 |
} |
| 1126 |
/* Did the hooks approve of the attribute? */ |
| 1127 |
if (!hookEvent.keepAttr) { |
| 1128 |
_removeAttribute(name, currentNode); |
| 1129 |
continue; |
| 1130 |
} |
| 1131 |
/* Work around a security issue in jQuery 3.0 */ |
| 1132 |
if (!ALLOW_SELF_CLOSE_IN_ATTR && regExpTest(/\/>/i, value)) { |
| 1133 |
_removeAttribute(name, currentNode); |
| 1134 |
continue; |
| 1135 |
} |
| 1136 |
/* Sanitize attribute content to be template-safe */ |
| 1137 |
if (SAFE_FOR_TEMPLATES) { |
| 1138 |
arrayForEach([MUSTACHE_EXPR, ERB_EXPR, TMPLIT_EXPR], expr => { |
| 1139 |
value = stringReplace(value, expr, ' '); |
| 1140 |
}); |
| 1141 |
} |
| 1142 |
/* Is `value` valid for this attribute? */ |
| 1143 |
const lcTag = transformCaseFunc(currentNode.nodeName); |
| 1144 |
if (!_isValidAttribute(lcTag, lcName, value)) { |
| 1145 |
_removeAttribute(name, currentNode); |
| 1146 |
continue; |
| 1147 |
} |
| 1148 |
/* Handle attributes that require Trusted Types */ |
| 1149 |
if (trustedTypesPolicy && typeof trustedTypes === 'object' && typeof trustedTypes.getAttributeType === 'function') { |
| 1150 |
if (namespaceURI) ; else { |
| 1151 |
switch (trustedTypes.getAttributeType(lcTag, lcName)) { |
| 1152 |
case 'TrustedHTML': |
| 1153 |
{ |
| 1154 |
value = trustedTypesPolicy.createHTML(value); |
| 1155 |
break; |
| 1156 |
} |
| 1157 |
case 'TrustedScriptURL': |
| 1158 |
{ |
| 1159 |
value = trustedTypesPolicy.createScriptURL(value); |
| 1160 |
break; |
| 1161 |
} |
| 1162 |
} |
| 1163 |
} |
| 1164 |
} |
| 1165 |
/* Handle invalid data-* attribute set by try-catching it */ |
| 1166 |
if (value !== initValue) { |
| 1167 |
try { |
| 1168 |
if (namespaceURI) { |
| 1169 |
currentNode.setAttributeNS(namespaceURI, name, value); |
| 1170 |
} else { |
| 1171 |
/* Fallback to setAttribute() for browser-unrecognized namespaces e.g. "x-schema". */ |
| 1172 |
currentNode.setAttribute(name, value); |
| 1173 |
} |
| 1174 |
if (_isClobbered(currentNode)) { |
| 1175 |
_forceRemove(currentNode); |
| 1176 |
} else { |
| 1177 |
arrayPop(DOMPurify.removed); |
| 1178 |
} |
| 1179 |
} catch (_) { |
| 1180 |
_removeAttribute(name, currentNode); |
| 1181 |
} |
| 1182 |
} |
| 1183 |
} |
| 1184 |
/* Execute a hook if present */ |
| 1185 |
_executeHooks(hooks.afterSanitizeAttributes, currentNode, null); |
| 1186 |
}; |
| 1187 |
/** |
| 1188 |
* _sanitizeShadowDOM |
| 1189 |
* |
| 1190 |
* @param fragment to iterate over recursively |
| 1191 |
*/ |
| 1192 |
const _sanitizeShadowDOM = function _sanitizeShadowDOM(fragment) { |
| 1193 |
let shadowNode = null; |
| 1194 |
const shadowIterator = _createNodeIterator(fragment); |
| 1195 |
/* Execute a hook if present */ |
| 1196 |
_executeHooks(hooks.beforeSanitizeShadowDOM, fragment, null); |
| 1197 |
while (shadowNode = shadowIterator.nextNode()) { |
| 1198 |
/* Execute a hook if present */ |
| 1199 |
_executeHooks(hooks.uponSanitizeShadowNode, shadowNode, null); |
| 1200 |
/* Sanitize tags and elements */ |
| 1201 |
_sanitizeElements(shadowNode); |
| 1202 |
/* Check attributes next */ |
| 1203 |
_sanitizeAttributes(shadowNode); |
| 1204 |
/* Deep shadow DOM detected */ |
| 1205 |
if (shadowNode.content instanceof DocumentFragment) { |
| 1206 |
_sanitizeShadowDOM(shadowNode.content); |
| 1207 |
} |
| 1208 |
} |
| 1209 |
/* Execute a hook if present */ |
| 1210 |
_executeHooks(hooks.afterSanitizeShadowDOM, fragment, null); |
| 1211 |
}; |
| 1212 |
// eslint-disable-next-line complexity |
| 1213 |
DOMPurify.sanitize = function (dirty) { |
| 1214 |
let cfg = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : {}; |
| 1215 |
let body = null; |
| 1216 |
let importedNode = null; |
| 1217 |
let currentNode = null; |
| 1218 |
let returnNode = null; |
| 1219 |
/* Make sure we have a string to sanitize. |
| 1220 |
DO NOT return early, as this will return the wrong type if |
| 1221 |
the user has requested a DOM object rather than a string */ |
| 1222 |
IS_EMPTY_INPUT = !dirty; |
| 1223 |
if (IS_EMPTY_INPUT) { |
| 1224 |
dirty = '<!-->'; |
| 1225 |
} |
| 1226 |
/* Stringify, in case dirty is an object */ |
| 1227 |
if (typeof dirty !== 'string' && !_isNode(dirty)) { |
| 1228 |
if (typeof dirty.toString === 'function') { |
| 1229 |
dirty = dirty.toString(); |
| 1230 |
if (typeof dirty !== 'string') { |
| 1231 |
throw typeErrorCreate('dirty is not a string, aborting'); |
| 1232 |
} |
| 1233 |
} else { |
| 1234 |
throw typeErrorCreate('toString is not a function'); |
| 1235 |
} |
| 1236 |
} |
| 1237 |
/* Return dirty HTML if DOMPurify cannot run */ |
| 1238 |
if (!DOMPurify.isSupported) { |
| 1239 |
return dirty; |
| 1240 |
} |
| 1241 |
/* Assign config vars */ |
| 1242 |
if (!SET_CONFIG) { |
| 1243 |
_parseConfig(cfg); |
| 1244 |
} |
| 1245 |
/* Clean up removed elements */ |
| 1246 |
DOMPurify.removed = []; |
| 1247 |
/* Check if dirty is correctly typed for IN_PLACE */ |
| 1248 |
if (typeof dirty === 'string') { |
| 1249 |
IN_PLACE = false; |
| 1250 |
} |
| 1251 |
if (IN_PLACE) { |
| 1252 |
/* Do some early pre-sanitization to avoid unsafe root nodes */ |
| 1253 |
if (dirty.nodeName) { |
| 1254 |
const tagName = transformCaseFunc(dirty.nodeName); |
| 1255 |
if (!ALLOWED_TAGS[tagName] || FORBID_TAGS[tagName]) { |
| 1256 |
throw typeErrorCreate('root node is forbidden and cannot be sanitized in-place'); |
| 1257 |
} |
| 1258 |
} |
| 1259 |
} else if (dirty instanceof Node) { |
| 1260 |
/* If dirty is a DOM element, append to an empty document to avoid |
| 1261 |
elements being stripped by the parser */ |
| 1262 |
body = _initDocument('<!---->'); |
| 1263 |
importedNode = body.ownerDocument.importNode(dirty, true); |
| 1264 |
if (importedNode.nodeType === NODE_TYPE.element && importedNode.nodeName === 'BODY') { |
| 1265 |
/* Node is already a body, use as is */ |
| 1266 |
body = importedNode; |
| 1267 |
} else if (importedNode.nodeName === 'HTML') { |
| 1268 |
body = importedNode; |
| 1269 |
} else { |
| 1270 |
// eslint-disable-next-line unicorn/prefer-dom-node-append |
| 1271 |
body.appendChild(importedNode); |
| 1272 |
} |
| 1273 |
} else { |
| 1274 |
/* Exit directly if we have nothing to do */ |
| 1275 |
if (!RETURN_DOM && !SAFE_FOR_TEMPLATES && !WHOLE_DOCUMENT && |
| 1276 |
// eslint-disable-next-line unicorn/prefer-includes |
| 1277 |
dirty.indexOf('<') === -1) { |
| 1278 |
return trustedTypesPolicy && RETURN_TRUSTED_TYPE ? trustedTypesPolicy.createHTML(dirty) : dirty; |
| 1279 |
} |
| 1280 |
/* Initialize the document to work on */ |
| 1281 |
body = _initDocument(dirty); |
| 1282 |
/* Check we have a DOM node from the data */ |
| 1283 |
if (!body) { |
| 1284 |
return RETURN_DOM ? null : RETURN_TRUSTED_TYPE ? emptyHTML : ''; |
| 1285 |
} |
| 1286 |
} |
| 1287 |
/* Remove first element node (ours) if FORCE_BODY is set */ |
| 1288 |
if (body && FORCE_BODY) { |
| 1289 |
_forceRemove(body.firstChild); |
| 1290 |
} |
| 1291 |
/* Get node iterator */ |
| 1292 |
const nodeIterator = _createNodeIterator(IN_PLACE ? dirty : body); |
| 1293 |
/* Now start iterating over the created document */ |
| 1294 |
while (currentNode = nodeIterator.nextNode()) { |
| 1295 |
/* Sanitize tags and elements */ |
| 1296 |
_sanitizeElements(currentNode); |
| 1297 |
/* Check attributes next */ |
| 1298 |
_sanitizeAttributes(currentNode); |
| 1299 |
/* Shadow DOM detected, sanitize it */ |
| 1300 |
if (currentNode.content instanceof DocumentFragment) { |
| 1301 |
_sanitizeShadowDOM(currentNode.content); |
| 1302 |
} |
| 1303 |
} |
| 1304 |
/* If we sanitized `dirty` in-place, return it. */ |
| 1305 |
if (IN_PLACE) { |
| 1306 |
return dirty; |
| 1307 |
} |
| 1308 |
/* Return sanitized string or DOM */ |
| 1309 |
if (RETURN_DOM) { |
| 1310 |
if (RETURN_DOM_FRAGMENT) { |
| 1311 |
returnNode = createDocumentFragment.call(body.ownerDocument); |
| 1312 |
while (body.firstChild) { |
| 1313 |
// eslint-disable-next-line unicorn/prefer-dom-node-append |
| 1314 |
returnNode.appendChild(body.firstChild); |
| 1315 |
} |
| 1316 |
} else { |
| 1317 |
returnNode = body; |
| 1318 |
} |
| 1319 |
if (ALLOWED_ATTR.shadowroot || ALLOWED_ATTR.shadowrootmode) { |
| 1320 |
/* |
| 1321 |
AdoptNode() is not used because internal state is not reset |
| 1322 |
(e.g. the past names map of a HTMLFormElement), this is safe |
| 1323 |
in theory but we would rather not risk another attack vector. |
| 1324 |
The state that is cloned by importNode() is explicitly defined |
| 1325 |
by the specs. |
| 1326 |
*/ |
| 1327 |
returnNode = importNode.call(originalDocument, returnNode, true); |
| 1328 |
} |
| 1329 |
return returnNode; |
| 1330 |
} |
| 1331 |
let serializedHTML = WHOLE_DOCUMENT ? body.outerHTML : body.innerHTML; |
| 1332 |
/* Serialize doctype if allowed */ |
| 1333 |
if (WHOLE_DOCUMENT && ALLOWED_TAGS['!doctype'] && body.ownerDocument && body.ownerDocument.doctype && body.ownerDocument.doctype.name && regExpTest(DOCTYPE_NAME, body.ownerDocument.doctype.name)) { |
| 1334 |
serializedHTML = '<!DOCTYPE ' + body.ownerDocument.doctype.name + '>\n' + serializedHTML; |
| 1335 |
} |
| 1336 |
/* Sanitize final string template-safe */ |
| 1337 |
if (SAFE_FOR_TEMPLATES) { |
| 1338 |
arrayForEach([MUSTACHE_EXPR, ERB_EXPR, TMPLIT_EXPR], expr => { |
| 1339 |
serializedHTML = stringReplace(serializedHTML, expr, ' '); |
| 1340 |
}); |
| 1341 |
} |
| 1342 |
return trustedTypesPolicy && RETURN_TRUSTED_TYPE ? trustedTypesPolicy.createHTML(serializedHTML) : serializedHTML; |
| 1343 |
}; |
| 1344 |
DOMPurify.setConfig = function () { |
| 1345 |
let cfg = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : {}; |
| 1346 |
_parseConfig(cfg); |
| 1347 |
SET_CONFIG = true; |
| 1348 |
}; |
| 1349 |
DOMPurify.clearConfig = function () { |
| 1350 |
CONFIG = null; |
| 1351 |
SET_CONFIG = false; |
| 1352 |
}; |
| 1353 |
DOMPurify.isValidAttribute = function (tag, attr, value) { |
| 1354 |
/* Initialize shared config vars if necessary. */ |
| 1355 |
if (!CONFIG) { |
| 1356 |
_parseConfig({}); |
| 1357 |
} |
| 1358 |
const lcTag = transformCaseFunc(tag); |
| 1359 |
const lcName = transformCaseFunc(attr); |
| 1360 |
return _isValidAttribute(lcTag, lcName, value); |
| 1361 |
}; |
| 1362 |
DOMPurify.addHook = function (entryPoint, hookFunction) { |
| 1363 |
if (typeof hookFunction !== 'function') { |
| 1364 |
return; |
| 1365 |
} |
| 1366 |
arrayPush(hooks[entryPoint], hookFunction); |
| 1367 |
}; |
| 1368 |
DOMPurify.removeHook = function (entryPoint, hookFunction) { |
| 1369 |
if (hookFunction !== undefined) { |
| 1370 |
const index = arrayLastIndexOf(hooks[entryPoint], hookFunction); |
| 1371 |
return index === -1 ? undefined : arraySplice(hooks[entryPoint], index, 1)[0]; |
| 1372 |
} |
| 1373 |
return arrayPop(hooks[entryPoint]); |
| 1374 |
}; |
| 1375 |
DOMPurify.removeHooks = function (entryPoint) { |
| 1376 |
hooks[entryPoint] = []; |
| 1377 |
}; |
| 1378 |
DOMPurify.removeAllHooks = function () { |
| 1379 |
hooks = _createHooksMap(); |
| 1380 |
}; |
| 1381 |
return DOMPurify; |
| 1382 |
} |
| 1383 |
var purify = createDOMPurify(); |
| 1384 |
|
| 1385 |
return purify; |
| 1386 |
|
| 1387 |
})); |
| 1388 |
//# sourceMappingURL=purify.js.map |
| 1389 |
|
