dompurify
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DOMPurify is a DOM-only, super-fast, uber-tolerant XSS sanitizer for HTML, MathML and SVG. It's written in JavaScript and works in all modern browsers (Safari, Opera (15+), Internet Explorer (10+), Firefox and Chrome - as well as almost anything else usin
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JavaScript
/*! @license DOMPurify 3.4.4 | (c) Cure53 and other contributors | Released under the Apache license 2.0 and Mozilla Public License 2.0 | github.com/cure53/DOMPurify/blob/3.4.4/LICENSE */
function _arrayLikeToArray(r, a) {
(null == a || a > r.length) && (a = r.length);
for (var e = 0, n = Array(a); e < a; e++) n[e] = r[e];
return n;
}
function _arrayWithHoles(r) {
if (Array.isArray(r)) return r;
}
function _iterableToArrayLimit(r, l) {
var t = null == r ? null : "undefined" != typeof Symbol && r[Symbol.iterator] || r["@@iterator"];
if (null != t) {
var e,
n,
i,
u,
a = [],
f = true,
o = false;
try {
if (i = (t = t.call(r)).next, 0 === l) ; else for (; !(f = (e = i.call(t)).done) && (a.push(e.value), a.length !== l); f = !0);
} catch (r) {
o = true, n = r;
} finally {
try {
if (!f && null != t.return && (u = t.return(), Object(u) !== u)) return;
} finally {
if (o) throw n;
}
}
return a;
}
}
function _nonIterableRest() {
throw new TypeError("Invalid attempt to destructure non-iterable instance.\nIn order to be iterable, non-array objects must have a [Symbol.iterator]() method.");
}
function _slicedToArray(r, e) {
return _arrayWithHoles(r) || _iterableToArrayLimit(r, e) || _unsupportedIterableToArray(r, e) || _nonIterableRest();
}
function _unsupportedIterableToArray(r, a) {
if (r) {
if ("string" == typeof r) return _arrayLikeToArray(r, a);
var t = {}.toString.call(r).slice(8, -1);
return "Object" === t && r.constructor && (t = r.constructor.name), "Map" === t || "Set" === t ? Array.from(r) : "Arguments" === t || /^(?:Ui|I)nt(?:8|16|32)(?:Clamped)?Array$/.test(t) ? _arrayLikeToArray(r, a) : void 0;
}
}
const entries = Object.entries,
setPrototypeOf = Object.setPrototypeOf,
isFrozen = Object.isFrozen,
getPrototypeOf = Object.getPrototypeOf,
getOwnPropertyDescriptor = Object.getOwnPropertyDescriptor;
let freeze = Object.freeze,
seal = Object.seal,
create = Object.create; // eslint-disable-line import/no-mutable-exports
let _ref = typeof Reflect !== 'undefined' && Reflect,
apply = _ref.apply,
construct = _ref.construct;
if (!freeze) {
freeze = function freeze(x) {
return x;
};
}
if (!seal) {
seal = function seal(x) {
return x;
};
}
if (!apply) {
apply = function apply(func, thisArg) {
for (var _len = arguments.length, args = new Array(_len > 2 ? _len - 2 : 0), _key = 2; _key < _len; _key++) {
args[_key - 2] = arguments[_key];
}
return func.apply(thisArg, args);
};
}
if (!construct) {
construct = function construct(Func) {
for (var _len2 = arguments.length, args = new Array(_len2 > 1 ? _len2 - 1 : 0), _key2 = 1; _key2 < _len2; _key2++) {
args[_key2 - 1] = arguments[_key2];
}
return new Func(...args);
};
}
const arrayForEach = unapply(Array.prototype.forEach);
const arrayLastIndexOf = unapply(Array.prototype.lastIndexOf);
const arrayPop = unapply(Array.prototype.pop);
const arrayPush = unapply(Array.prototype.push);
const arraySplice = unapply(Array.prototype.splice);
const arrayIsArray = Array.isArray;
const stringToLowerCase = unapply(String.prototype.toLowerCase);
const stringToString = unapply(String.prototype.toString);
const stringMatch = unapply(String.prototype.match);
const stringReplace = unapply(String.prototype.replace);
const stringIndexOf = unapply(String.prototype.indexOf);
const stringTrim = unapply(String.prototype.trim);
const numberToString = unapply(Number.prototype.toString);
const booleanToString = unapply(Boolean.prototype.toString);
const bigintToString = typeof BigInt === 'undefined' ? null : unapply(BigInt.prototype.toString);
const symbolToString = typeof Symbol === 'undefined' ? null : unapply(Symbol.prototype.toString);
const objectHasOwnProperty = unapply(Object.prototype.hasOwnProperty);
const objectToString = unapply(Object.prototype.toString);
const regExpTest = unapply(RegExp.prototype.test);
const typeErrorCreate = unconstruct(TypeError);
/**
* Creates a new function that calls the given function with a specified thisArg and arguments.
*
* @param func - The function to be wrapped and called.
* @returns A new function that calls the given function with a specified thisArg and arguments.
*/
function unapply(func) {
return function (thisArg) {
if (thisArg instanceof RegExp) {
thisArg.lastIndex = 0;
}
for (var _len3 = arguments.length, args = new Array(_len3 > 1 ? _len3 - 1 : 0), _key3 = 1; _key3 < _len3; _key3++) {
args[_key3 - 1] = arguments[_key3];
}
return apply(func, thisArg, args);
};
}
/**
* Creates a new function that constructs an instance of the given constructor function with the provided arguments.
*
* @param func - The constructor function to be wrapped and called.
* @returns A new function that constructs an instance of the given constructor function with the provided arguments.
*/
function unconstruct(Func) {
return function () {
for (var _len4 = arguments.length, args = new Array(_len4), _key4 = 0; _key4 < _len4; _key4++) {
args[_key4] = arguments[_key4];
}
return construct(Func, args);
};
}
/**
* Add properties to a lookup table
*
* @param set - The set to which elements will be added.
* @param array - The array containing elements to be added to the set.
* @param transformCaseFunc - An optional function to transform the case of each element before adding to the set.
* @returns The modified set with added elements.
*/
function addToSet(set, array) {
let transformCaseFunc = arguments.length > 2 && arguments[2] !== undefined ? arguments[2] : stringToLowerCase;
if (setPrototypeOf) {
// Make 'in' and truthy checks like Boolean(set.constructor)
// independent of any properties defined on Object.prototype.
// Prevent prototype setters from intercepting set as a this value.
setPrototypeOf(set, null);
}
if (!arrayIsArray(array)) {
return set;
}
let l = array.length;
while (l--) {
let element = array[l];
if (typeof element === 'string') {
const lcElement = transformCaseFunc(element);
if (lcElement !== element) {
// Config presets (e.g. tags.js, attrs.js) are immutable.
if (!isFrozen(array)) {
array[l] = lcElement;
}
element = lcElement;
}
}
set[element] = true;
}
return set;
}
/**
* Clean up an array to harden against CSPP
*
* @param array - The array to be cleaned.
* @returns The cleaned version of the array
*/
function cleanArray(array) {
for (let index = 0; index < array.length; index++) {
const isPropertyExist = objectHasOwnProperty(array, index);
if (!isPropertyExist) {
array[index] = null;
}
}
return array;
}
/**
* Shallow clone an object
*
* @param object - The object to be cloned.
* @returns A new object that copies the original.
*/
function clone(object) {
const newObject = create(null);
for (const _ref2 of entries(object)) {
var _ref3 = _slicedToArray(_ref2, 2);
const property = _ref3[0];
const value = _ref3[1];
const isPropertyExist = objectHasOwnProperty(object, property);
if (isPropertyExist) {
if (arrayIsArray(value)) {
newObject[property] = cleanArray(value);
} else if (value && typeof value === 'object' && value.constructor === Object) {
newObject[property] = clone(value);
} else {
newObject[property] = value;
}
}
}
return newObject;
}
/**
* Convert non-node values into strings without depending on direct property access.
*
* @param value - The value to stringify.
* @returns A string representation of the provided value.
*/
function stringifyValue(value) {
switch (typeof value) {
case 'string':
{
return value;
}
case 'number':
{
return numberToString(value);
}
case 'boolean':
{
return booleanToString(value);
}
case 'bigint':
{
return bigintToString ? bigintToString(value) : '0';
}
case 'symbol':
{
return symbolToString ? symbolToString(value) : 'Symbol()';
}
case 'undefined':
{
return objectToString(value);
}
case 'function':
case 'object':
{
if (value === null) {
return objectToString(value);
}
const valueAsRecord = value;
const valueToString = lookupGetter(valueAsRecord, 'toString');
if (typeof valueToString === 'function') {
const stringified = valueToString(valueAsRecord);
return typeof stringified === 'string' ? stringified : objectToString(stringified);
}
return objectToString(value);
}
default:
{
return objectToString(value);
}
}
}
/**
* This method automatically checks if the prop is function or getter and behaves accordingly.
*
* @param object - The object to look up the getter function in its prototype chain.
* @param prop - The property name for which to find the getter function.
* @returns The getter function found in the prototype chain or a fallback function.
*/
function lookupGetter(object, prop) {
while (object !== null) {
const desc = getOwnPropertyDescriptor(object, prop);
if (desc) {
if (desc.get) {
return unapply(desc.get);
}
if (typeof desc.value === 'function') {
return unapply(desc.value);
}
}
object = getPrototypeOf(object);
}
function fallbackValue() {
return null;
}
return fallbackValue;
}
function isRegex(value) {
try {
regExpTest(value, '');
return true;
} catch (_unused) {
return false;
}
}
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', 'selectedcontent', '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']);
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']);
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']);
// List of SVG elements that are disallowed by default.
// We still need to know them so that we can do namespace
// checks properly in case one wants to add them to
// allow-list.
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']);
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']);
// Similarly to SVG, we want to know all MathML elements,
// even those that we disallow by default.
const mathMlDisallowed = freeze(['maction', 'maligngroup', 'malignmark', 'mlongdiv', 'mscarries', 'mscarry', 'msgroup', 'mstack', 'msline', 'msrow', 'semantics', 'annotation', 'annotation-xml', 'mprescripts', 'none']);
const text = freeze(['#text']);
const html = freeze(['accept', 'action', 'align', 'alt', 'autocapitalize', 'autocomplete', 'autopictureinpicture', 'autoplay', 'background', 'bgcolor', 'border', 'capture', 'cellpadding', 'cellspacing', 'checked', 'cite', 'class', 'clear', 'color', 'cols', 'colspan', 'command', 'commandfor', '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']);
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']);
const mathMl = freeze(['accent', 'accentunder', 'align', 'bevelled', 'close', 'columnalign', 'columnlines', 'columnspacing', 'columnspan', 'denomalign', 'depth', 'dir', 'display', 'displaystyle', 'encoding', 'fence', 'frame', 'height', 'href', 'id', 'largeop', 'length', 'linethickness', 'lquote', 'lspace', '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']);
const xml = freeze(['xlink:href', 'xml:id', 'xlink:title', 'xml:space', 'xmlns:xlink']);
const MUSTACHE_EXPR = seal(/{{[\w\W]*|^[\w\W]*}}/g);
const ERB_EXPR = seal(/<%[\w\W]*|^[\w\W]*%>/g);
const TMPLIT_EXPR = seal(/\${[\w\W]*/g);
const DATA_ATTR = seal(/^data-[\-\w.\u00B7-\uFFFF]+$/); // eslint-disable-line no-useless-escape
const ARIA_ATTR = seal(/^aria-[\-\w]+$/); // eslint-disable-line no-useless-escape
const IS_ALLOWED_URI = seal(/^(?:(?:(?:f|ht)tps?|mailto|tel|callto|sms|cid|xmpp|matrix):|[^a-z]|[a-z+.\-]+(?:[^a-z+.\-:]|$))/i // eslint-disable-line no-useless-escape
);
const IS_SCRIPT_OR_DATA = seal(/^(?:\w+script|data):/i);
const ATTR_WHITESPACE = seal(/[\u0000-\u0020\u00A0\u1680\u180E\u2000-\u2029\u205F\u3000]/g // eslint-disable-line no-control-regex
);
const DOCTYPE_NAME = seal(/^html$/i);
const CUSTOM_ELEMENT = seal(/^[a-z][.\w]*(-[.\w]+)+$/i);
/* eslint-disable @typescript-eslint/indent */
// https://developer.mozilla.org/en-US/docs/Web/API/Node/nodeType
const NODE_TYPE = {
element: 1,
text: 3,
// Deprecated
progressingInstruction: 7,
comment: 8,
document: 9};
const getGlobal = function getGlobal() {
return typeof window === 'undefined' ? null : window;
};
/**
* Creates a no-op policy for internal use only.
* Don't export this function outside this module!
* @param trustedTypes The policy factory.
* @param purifyHostElement The Script element used to load DOMPurify (to determine policy name suffix).
* @return The policy created (or null, if Trusted Types
* are not supported or creating the policy failed).
*/
const _createTrustedTypesPolicy = function _createTrustedTypesPolicy(trustedTypes, purifyHostElement) {
if (typeof trustedTypes !== 'object' || typeof trustedTypes.createPolicy !== 'function') {
return null;
}
// Allow the callers to control the unique policy name
// by adding a data-tt-policy-suffix to the script element with the DOMPurify.
// Policy creation with duplicate names throws in Trusted Types.
let suffix = null;
const ATTR_NAME = 'data-tt-policy-suffix';
if (purifyHostElement && purifyHostElement.hasAttribute(ATTR_NAME)) {
suffix = purifyHostElement.getAttribute(ATTR_NAME);
}
const policyName = 'dompurify' + (suffix ? '#' + suffix : '');
try {
return trustedTypes.createPolicy(policyName, {
createHTML(html) {
return html;
},
createScriptURL(scriptUrl) {
return scriptUrl;
}
});
} catch (_) {
// Policy creation failed (most likely another DOMPurify script has
// already run). Skip creating the policy, as this will only cause errors
// if TT are enforced.
console.warn('TrustedTypes policy ' + policyName + ' could not be created.');
return null;
}
};
const _createHooksMap = function _createHooksMap() {
return {
afterSanitizeAttributes: [],
afterSanitizeElements: [],
afterSanitizeShadowDOM: [],
beforeSanitizeAttributes: [],
beforeSanitizeElements: [],
beforeSanitizeShadowDOM: [],
uponSanitizeAttribute: [],
uponSanitizeElement: [],
uponSanitizeShadowNode: []
};
};
function createDOMPurify() {
let window = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : getGlobal();
const DOMPurify = root => createDOMPurify(root);
DOMPurify.version = '3.4.4';
DOMPurify.removed = [];
if (!window || !window.document || window.document.nodeType !== NODE_TYPE.document || !window.Element) {
// Not running in a browser, provide a factory function
// so that you can pass your own Window
DOMPurify.isSupported = false;
return DOMPurify;
}
let document = window.document;
const originalDocument = document;
const currentScript = originalDocument.currentScript;
const DocumentFragment = window.DocumentFragment,
HTMLTemplateElement = window.HTMLTemplateElement,
Node = window.Node,
Element = window.Element,
NodeFilter = window.NodeFilter,
_window$NamedNodeMap = window.NamedNodeMap,
NamedNodeMap = _window$NamedNodeMap === void 0 ? window.NamedNodeMap || window.MozNamedAttrMap : _window$NamedNodeMap,
HTMLFormElement = window.HTMLFormElement,
DOMParser = window.DOMParser,
trustedTypes = window.trustedTypes;
const ElementPrototype = Element.prototype;
const cloneNode = lookupGetter(ElementPrototype, 'cloneNode');
const remove = lookupGetter(ElementPrototype, 'remove');
const getNextSibling = lookupGetter(ElementPrototype, 'nextSibling');
const getChildNodes = lookupGetter(ElementPrototype, 'childNodes');
const getParentNode = lookupGetter(ElementPrototype, 'parentNode');
const getNodeType = Node && Node.prototype ? lookupGetter(Node.prototype, 'nodeType') : null;
// As per issue #47, the web-components registry is inherited by a
// new document created via createHTMLDocument. As per the spec
// (http://w3c.github.io/webcomponents/spec/custom/#creating-and-passing-registries)
// a new empty registry is used when creating a template contents owner
// document, so we use that as our parent document to ensure nothing
// is inherited.
if (typeof HTMLTemplateElement === 'function') {
const template = document.createElement('template');
if (template.content && template.content.ownerDocument) {
document = template.content.ownerDocument;
}
}
let trustedTypesPolicy;
let emptyHTML = '';
const _document = document,
implementation = _document.implementation,
createNodeIterator = _document.createNodeIterator,
createDocumentFragment = _document.createDocumentFragment,
getElementsByTagName = _document.getElementsByTagName;
const importNode = originalDocument.importNode;
let hooks = _createHooksMap();
/**
* Expose whether this browser supports running the full DOMPurify.
*/
DOMPurify.isSupported = typeof entries === 'function' && typeof getParentNode === 'function' && implementation && implementation.createHTMLDocument !== undefined;
const MUSTACHE_EXPR$1 = MUSTACHE_EXPR,
ERB_EXPR$1 = ERB_EXPR,
TMPLIT_EXPR$1 = TMPLIT_EXPR,
DATA_ATTR$1 = DATA_ATTR,
ARIA_ATTR$1 = ARIA_ATTR,
IS_SCRIPT_OR_DATA$1 = IS_SCRIPT_OR_DATA,
ATTR_WHITESPACE$1 = ATTR_WHITESPACE,
CUSTOM_ELEMENT$1 = CUSTOM_ELEMENT;
let IS_ALLOWED_URI$1 = IS_ALLOWED_URI;
/**
* We consider the elements and attributes below to be safe. Ideally
* don't add any new ones but feel free to remove unwanted ones.
*/
/* allowed element names */
let ALLOWED_TAGS = null;
const DEFAULT_ALLOWED_TAGS = addToSet({}, [...html$1, ...svg$1, ...svgFilters, ...mathMl$1, ...text]);
/* Allowed attribute names */
let ALLOWED_ATTR = null;
const DEFAULT_ALLOWED_ATTR = addToSet({}, [...html, ...svg, ...mathMl, ...xml]);
/*
* Configure how DOMPurify should handle custom elements and their attributes as well as customized built-in elements.
* @property {RegExp|Function|null} tagNameCheck one of [null, regexPattern, predicate]. Default: `null` (disallow any custom elements)
* @property {RegExp|Function|null} attributeNameCheck one of [null, regexPattern, predicate]. Default: `null` (disallow any attributes not on the allow list)
* @property {boolean} allowCustomizedBuiltInElements allow custom elements derived from built-ins if they pass CUSTOM_ELEMENT_HANDLING.tagNameCheck. Default: `false`.
*/
let CUSTOM_ELEMENT_HANDLING = Object.seal(create(null, {
tagNameCheck: {
writable: true,
configurable: false,
enumerable: true,
value: null
},
attributeNameCheck: {
writable: true,
configurable: false,
enumerable: true,
value: null
},
allowCustomizedBuiltInElements: {
writable: true,
configurable: false,
enumerable: true,
value: false
}
}));
/* Explicitly forbidden tags (overrides ALLOWED_TAGS/ADD_TAGS) */
let FORBID_TAGS = null;
/* Explicitly forbidden attributes (overrides ALLOWED_ATTR/ADD_ATTR) */
let FORBID_ATTR = null;
/* Config object to store ADD_TAGS/ADD_ATTR functions (when used as functions) */
const EXTRA_ELEMENT_HANDLING = Object.seal(create(null, {
tagCheck: {
writable: true,
configurable: false,
enumerable: true,
value: null
},
attributeCheck: {
writable: true,
configurable: false,
enumerable: true,
value: null
}
}));
/* Decide if ARIA attributes are okay */
let ALLOW_ARIA_ATTR = true;
/* Decide if custom data attributes are okay */
let ALLOW_DATA_ATTR = true;
/* Decide if unknown protocols are okay */
let ALLOW_UNKNOWN_PROTOCOLS = false;
/* Decide if self-closing tags in attributes are allowed.
* Usually removed due to a mXSS issue in jQuery 3.0 */
let ALLOW_SELF_CLOSE_IN_ATTR = true;
/* Output should be safe for common template engines.
* This means, DOMPurify removes data attributes, mustaches and ERB
*/
let SAFE_FOR_TEMPLATES = false;
/* Output should be safe even for XML used within HTML and alike.
* This means, DOMPurify removes comments when containing risky content.
*/
let SAFE_FOR_XML = true;
/* Decide if document with <html>... should be returned */
let WHOLE_DOCUMENT = false;
/* Track whether config is already set on this instance of DOMPurify. */
let SET_CONFIG = false;
/* Decide if all elements (e.g. style, script) must be children of
* document.body. By default, browsers might move them to document.head */
let FORCE_BODY = false;
/* Decide if a DOM `HTMLBodyElement` should be returned, instead of a html
* string (or a TrustedHTML object if Trusted Types are supported).
* If `WHOLE_DOCUMENT` is enabled a `HTMLHtmlElement` will be returned instead
*/
let RETURN_DOM = false;
/* Decide if a DOM `DocumentFragment` should be returned, instead of a html
* string (or a TrustedHTML object if Trusted Types are supported) */
let RETURN_DOM_FRAGMENT = false;
/* Try to return a Trusted Type object instead of a string, return a string in
* case Trusted Types are not supported */
let RETURN_TRUSTED_TYPE = false;
/* Output should be free from DOM clobbering attacks?
* This sanitizes markups named with colliding, clobberable built-in DOM APIs.
*/
let SANITIZE_DOM = true;
/* Achieve full DOM Clobbering protection by isolating the namespace of named
* properties and JS variables, mitigating attacks that abuse the HTML/DOM spec rules.
*
* HTML/DOM spec rules that enable DOM Clobbering:
* - Named Access on Window (§7.3.3)
* - DOM Tree Accessors (§3.1.5)
* - Form Element Parent-Child Relations (§4.10.3)
* - Iframe srcdoc / Nested WindowProxies (§4.8.5)
* - HTMLCollection (§4.2.10.2)
*
* Namespace isolation is implemented by prefixing `id` and `name` attributes
* with a constant string, i.e., `user-content-`
*/
let SANITIZE_NAMED_PROPS = false;
const SANITIZE_NAMED_PROPS_PREFIX = 'user-content-';
/* Keep element content when removing element? */
let KEEP_CONTENT = true;
/* If a `Node` is passed to sanitize(), then performs sanitization in-place instead
* of importing it into a new Document and returning a sanitized copy */
let IN_PLACE = false;
/* Allow usage of profiles like html, svg and mathMl */
let USE_PROFILES = {};
/* Tags to ignore content of when KEEP_CONTENT is true */
let FORBID_CONTENTS = null;
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']);
/* Tags that are safe for data: URIs */
let DATA_URI_TAGS = null;
const DEFAULT_DATA_URI_TAGS = addToSet({}, ['audio', 'video', 'img', 'source', 'image', 'track']);
/* Attributes safe for values like "javascript:" */
let URI_SAFE_ATTRIBUTES = null;
const DEFAULT_URI_SAFE_ATTRIBUTES = addToSet({}, ['alt', 'class', 'for', 'id', 'label', 'name', 'pattern', 'placeholder', 'role', 'summary', 'title', 'value', 'style', 'xmlns']);
const MATHML_NAMESPACE = 'http://www.w3.org/1998/Math/MathML';
const SVG_NAMESPACE = 'http://www.w3.org/2000/svg';
const HTML_NAMESPACE = 'http://www.w3.org/1999/xhtml';
/* Document namespace */
let NAMESPACE = HTML_NAMESPACE;
let IS_EMPTY_INPUT = false;
/* Allowed XHTML+XML namespaces */
let ALLOWED_NAMESPACES = null;
const DEFAULT_ALLOWED_NAMESPACES = addToSet({}, [MATHML_NAMESPACE, SVG_NAMESPACE, HTML_NAMESPACE], stringToString);
let MATHML_TEXT_INTEGRATION_POINTS = addToSet({}, ['mi', 'mo', 'mn', 'ms', 'mtext']);
let HTML_INTEGRATION_POINTS = addToSet({}, ['annotation-xml']);
// Certain elements are allowed in both SVG and HTML
// namespace. We need to specify them explicitly
// so that they don't get erroneously deleted from
// HTML namespace.
const COMMON_SVG_AND_HTML_ELEMENTS = addToSet({}, ['title', 'style', 'font', 'a', 'script']);
/* Parsing of strict XHTML documents */
let PARSER_MEDIA_TYPE = null;
const SUPPORTED_PARSER_MEDIA_TYPES = ['application/xhtml+xml', 'text/html'];
const DEFAULT_PARSER_MEDIA_TYPE = 'text/html';
let transformCaseFunc = null;
/* Keep a reference to config to pass to hooks */
let CONFIG = null;
/* Ideally, do not touch anything below this line */
/* ______________________________________________ */
const formElement = document.createElement('form');
const isRegexOrFunction = function isRegexOrFunction(testValue) {
return testValue instanceof RegExp || testValue instanceof Function;
};
/**
* _parseConfig
*
* @param cfg optional config literal
*/
// eslint-disable-next-line complexity
const _parseConfig = function _parseConfig() {
let cfg = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : {};
if (CONFIG && CONFIG === cfg) {
return;
}
/* Shield configuration object from tampering */
if (!cfg || typeof cfg !== 'object') {
cfg = {};
}
/* Shield configuration object from prototype pollution */
cfg = clone(cfg);
PARSER_MEDIA_TYPE =
// eslint-disable-next-line unicorn/prefer-includes
SUPPORTED_PARSER_MEDIA_TYPES.indexOf(cfg.PARSER_MEDIA_TYPE) === -1 ? DEFAULT_PARSER_MEDIA_TYPE : cfg.PARSER_MEDIA_TYPE;
// HTML tags and attributes are not case-sensitive, converting to lowercase. Keeping XHTML as is.
transformCaseFunc = PARSER_MEDIA_TYPE === 'application/xhtml+xml' ? stringToString : stringToLowerCase;
/* Set configuration parameters */
ALLOWED_TAGS = objectHasOwnProperty(cfg, 'ALLOWED_TAGS') && arrayIsArray(cfg.ALLOWED_TAGS) ? addToSet({}, cfg.ALLOWED_TAGS, transformCaseFunc) : DEFAULT_ALLOWED_TAGS;
ALLOWED_ATTR = objectHasOwnProperty(cfg, 'ALLOWED_ATTR') && arrayIsArray(cfg.ALLOWED_ATTR) ? addToSet({}, cfg.ALLOWED_ATTR, transformCaseFunc) : DEFAULT_ALLOWED_ATTR;
ALLOWED_NAMESPACES = objectHasOwnProperty(cfg, 'ALLOWED_NAMESPACES') && arrayIsArray(cfg.ALLOWED_NAMESPACES) ? addToSet({}, cfg.ALLOWED_NAMESPACES, stringToString) : DEFAULT_ALLOWED_NAMESPACES;
URI_SAFE_ATTRIBUTES = objectHasOwnProperty(cfg, 'ADD_URI_SAFE_ATTR') && arrayIsArray(cfg.ADD_URI_SAFE_ATTR) ? addToSet(clone(DEFAULT_URI_SAFE_ATTRIBUTES), cfg.ADD_URI_SAFE_ATTR, transformCaseFunc) : DEFAULT_URI_SAFE_ATTRIBUTES;
DATA_URI_TAGS = objectHasOwnProperty(cfg, 'ADD_DATA_URI_TAGS') && arrayIsArray(cfg.ADD_DATA_URI_TAGS) ? addToSet(clone(DEFAULT_DATA_URI_TAGS), cfg.ADD_DATA_URI_TAGS, transformCaseFunc) : DEFAULT_DATA_URI_TAGS;
FORBID_CONTENTS = objectHasOwnProperty(cfg, 'FORBID_CONTENTS') && arrayIsArray(cfg.FORBID_CONTENTS) ? addToSet({}, cfg.FORBID_CONTENTS, transformCaseFunc) : DEFAULT_FORBID_CONTENTS;
FORBID_TAGS = objectHasOwnProperty(cfg, 'FORBID_TAGS') && arrayIsArray(cfg.FORBID_TAGS) ? addToSet({}, cfg.FORBID_TAGS, transformCaseFunc) : clone({});
FORBID_ATTR = objectHasOwnProperty(cfg, 'FORBID_ATTR') && arrayIsArray(cfg.FORBID_ATTR) ? addToSet({}, cfg.FORBID_ATTR, transformCaseFunc) : clone({});
USE_PROFILES = objectHasOwnProperty(cfg, 'USE_PROFILES') ? cfg.USE_PROFILES && typeof cfg.USE_PROFILES === 'object' ? clone(cfg.USE_PROFILES) : cfg.USE_PROFILES : false;
ALLOW_ARIA_ATTR = cfg.ALLOW_ARIA_ATTR !== false; // Default true
ALLOW_DATA_ATTR = cfg.ALLOW_DATA_ATTR !== false; // Default true
ALLOW_UNKNOWN_PROTOCOLS = cfg.ALLOW_UNKNOWN_PROTOCOLS || false; // Default false
ALLOW_SELF_CLOSE_IN_ATTR = cfg.ALLOW_SELF_CLOSE_IN_ATTR !== false; // Default true
SAFE_FOR_TEMPLATES = cfg.SAFE_FOR_TEMPLATES || false; // Default false
SAFE_FOR_XML = cfg.SAFE_FOR_XML !== false; // Default true
WHOLE_DOCUMENT = cfg.WHOLE_DOCUMENT || false; // Default false
RETURN_DOM = cfg.RETURN_DOM || false; // Default false
RETURN_DOM_FRAGMENT = cfg.RETURN_DOM_FRAGMENT || false; // Default false
RETURN_TRUSTED_TYPE = cfg.RETURN_TRUSTED_TYPE || false; // Default false
FORCE_BODY = cfg.FORCE_BODY || false; // Default false
SANITIZE_DOM = cfg.SANITIZE_DOM !== false; // Default true
SANITIZE_NAMED_PROPS = cfg.SANITIZE_NAMED_PROPS || false; // Default false
KEEP_CONTENT = cfg.KEEP_CONTENT !== false; // Default true
IN_PLACE = cfg.IN_PLACE || false; // Default false
IS_ALLOWED_URI$1 = isRegex(cfg.ALLOWED_URI_REGEXP) ? cfg.ALLOWED_URI_REGEXP : IS_ALLOWED_URI; // Default regexp
NAMESPACE = typeof cfg.NAMESPACE === 'string' ? cfg.NAMESPACE : HTML_NAMESPACE; // Default HTML namespace
MATHML_TEXT_INTEGRATION_POINTS = objectHasOwnProperty(cfg, 'MATHML_TEXT_INTEGRATION_POINTS') && cfg.MATHML_TEXT_INTEGRATION_POINTS && typeof cfg.MATHML_TEXT_INTEGRATION_POINTS === 'object' ? clone(cfg.MATHML_TEXT_INTEGRATION_POINTS) : addToSet({}, ['mi', 'mo', 'mn', 'ms', 'mtext']); // Default built-in map
HTML_INTEGRATION_POINTS = objectHasOwnProperty(cfg, 'HTML_INTEGRATION_POINTS') && cfg.HTML_INTEGRATION_POINTS && typeof cfg.HTML_INTEGRATION_POINTS === 'object' ? clone(cfg.HTML_INTEGRATION_POINTS) : addToSet({}, ['annotation-xml']); // Default built-in map
const customElementHandling = objectHasOwnProperty(cfg, 'CUSTOM_ELEMENT_HANDLING') && cfg.CUSTOM_ELEMENT_HANDLING && typeof cfg.CUSTOM_ELEMENT_HANDLING === 'object' ? clone(cfg.CUSTOM_ELEMENT_HANDLING) : create(null);
CUSTOM_ELEMENT_HANDLING = create(null);
if (objectHasOwnProperty(customElementHandling, 'tagNameCheck') && isRegexOrFunction(customElementHandling.tagNameCheck)) {
CUSTOM_ELEMENT_HANDLING.tagNameCheck = customElementHandling.tagNameCheck; // Default undefined
}
if (objectHasOwnProperty(customElementHandling, 'attributeNameCheck') && isRegexOrFunction(customElementHandling.attributeNameCheck)) {
CUSTOM_ELEMENT_HANDLING.attributeNameCheck = customElementHandling.attributeNameCheck; // Default undefined
}
if (objectHasOwnProperty(customElementHandling, 'allowCustomizedBuiltInElements') && typeof customElementHandling.allowCustomizedBuiltInElements === 'boolean') {
CUSTOM_ELEMENT_HANDLING.allowCustomizedBuiltInElements = customElementHandling.allowCustomizedBuiltInElements; // Default undefined
}
if (SAFE_FOR_TEMPLATES) {
ALLOW_DATA_ATTR = false;
}
if (RETURN_DOM_FRAGMENT) {
RETURN_DOM = true;
}
/* Parse profile info */
if (USE_PROFILES) {
ALLOWED_TAGS = addToSet({}, text);
ALLOWED_ATTR = create(null);
if (USE_PROFILES.html === true) {
addToSet(ALLOWED_TAGS, html$1);
addToSet(ALLOWED_ATTR, html);
}
if (USE_PROFILES.svg === true) {
addToSet(ALLOWED_TAGS, svg$1);
addToSet(ALLOWED_ATTR, svg);
addToSet(ALLOWED_ATTR, xml);
}
if (USE_PROFILES.svgFilters === true) {
addToSet(ALLOWED_TAGS, svgFilters);
addToSet(ALLOWED_ATTR, svg);
addToSet(ALLOWED_ATTR, xml);
}
if (USE_PROFILES.mathMl === true) {
addToSet(ALLOWED_TAGS, mathMl$1);
addToSet(ALLOWED_ATTR, mathMl);
addToSet(ALLOWED_ATTR, xml);
}
}
/* Always reset function-based ADD_TAGS / ADD_ATTR checks to prevent
* leaking across calls when switching from function to array config */
EXTRA_ELEMENT_HANDLING.tagCheck = null;
EXTRA_ELEMENT_HANDLING.attributeCheck = null;
/* Merge configuration parameters */
if (objectHasOwnProperty(cfg, 'ADD_TAGS')) {
if (typeof cfg.ADD_TAGS === 'function') {
EXTRA_ELEMENT_HANDLING.tagCheck = cfg.ADD_TAGS;
} else if (arrayIsArray(cfg.ADD_TAGS)) {
if (ALLOWED_TAGS === DEFAULT_ALLOWED_TAGS) {
ALLOWED_TAGS = clone(ALLOWED_TAGS);
}
addToSet(ALLOWED_TAGS, cfg.ADD_TAGS, transformCaseFunc);
}
}
if (objectHasOwnProperty(cfg, 'ADD_ATTR')) {
if (typeof cfg.ADD_ATTR === 'function') {
EXTRA_ELEMENT_HANDLING.attributeCheck = cfg.ADD_ATTR;
} else if (arrayIsArray(cfg.ADD_ATTR)) {
if (ALLOWED_ATTR === DEFAULT_ALLOWED_ATTR) {
ALLOWED_ATTR = clone(ALLOWED_ATTR);
}
addToSet(ALLOWED_ATTR, cfg.ADD_ATTR, transformCaseFunc);
}
}
if (objectHasOwnProperty(cfg, 'ADD_URI_SAFE_ATTR') && arrayIsArray(cfg.ADD_URI_SAFE_ATTR)) {
addToSet(URI_SAFE_ATTRIBUTES, cfg.ADD_URI_SAFE_ATTR, transformCaseFunc);
}
if (objectHasOwnProperty(cfg, 'FORBID_CONTENTS') && arrayIsArray(cfg.FORBID_CONTENTS)) {
if (FORBID_CONTENTS === DEFAULT_FORBID_CONTENTS) {
FORBID_CONTENTS = clone(FORBID_CONTENTS);
}
addToSet(FORBID_CONTENTS, cfg.FORBID_CONTENTS, transformCaseFunc);
}
if (objectHasOwnProperty(cfg, 'ADD_FORBID_CONTENTS') && arrayIsArray(cfg.ADD_FORBID_CONTENTS)) {
if (FORBID_CONTENTS === DEFAULT_FORBID_CONTENTS) {
FORBID_CONTENTS = clone(FORBID_CONTENTS);
}
addToSet(FORBID_CONTENTS, cfg.ADD_FORBID_CONTENTS, transformCaseFunc);
}
/* Add #text in case KEEP_CONTENT is set to true */
if (KEEP_CONTENT) {
ALLOWED_TAGS['#text'] = true;
}
/* Add html, head and body to ALLOWED_TAGS in case WHOLE_DOCUMENT is true */
if (WHOLE_DOCUMENT) {
addToSet(ALLOWED_TAGS, ['html', 'head', 'body']);
}
/* Add tbody to ALLOWED_TAGS in case tables are permitted, see #286, #365 */
if (ALLOWED_TAGS.table) {
addToSet(ALLOWED_TAGS, ['tbody']);
delete FORBID_TAGS.tbody;
}
if (cfg.TRUSTED_TYPES_POLICY) {
if (typeof cfg.TRUSTED_TYPES_POLICY.createHTML !== 'function') {
throw typeErrorCreate('TRUSTED_TYPES_POLICY configuration option must provide a "createHTML" hook.');
}
if (typeof cfg.TRUSTED_TYPES_POLICY.createScriptURL !== 'function') {
throw typeErrorCreate('TRUSTED_TYPES_POLICY configuration option must provide a "createScriptURL" hook.');
}
// Overwrite existing TrustedTypes policy.
trustedTypesPolicy = cfg.TRUSTED_TYPES_POLICY;
// Sign local variables required by `sanitize`.
emptyHTML = trustedTypesPolicy.createHTML('');
} else {
// Uninitialized policy, attempt to initialize the internal dompurify policy.
if (trustedTypesPolicy === undefined) {
trustedTypesPolicy = _createTrustedTypesPolicy(trustedTypes, currentScript);
}
// If creating the internal policy succeeded sign internal variables.
if (trustedTypesPolicy !== null && typeof emptyHTML === 'string') {
emptyHTML = trustedTypesPolicy.createHTML('');
}
}
// Prevent further manipulation of configuration.
// Not available in IE8, Safari 5, etc.
if (freeze) {
freeze(cfg);
}
CONFIG = cfg;
};
/* Keep track of all possible SVG and MathML tags
* so that we can perform the namespace checks
* correctly. */
const ALL_SVG_TAGS = addToSet({}, [...svg$1, ...svgFilters, ...svgDisallowed]);
const ALL_MATHML_TAGS = addToSet({}, [...mathMl$1, ...mathMlDisallowed]);
/**
* @param element a DOM element whose namespace is being checked
* @returns Return false if the element has a
* namespace that a spec-compliant parser would never
* return. Return true otherwise.
*/
const _checkValidNamespace = function _checkValidNamespace(element) {
let parent = getParentNode(element);
// In JSDOM, if we're inside shadow DOM, then parentNode
// can be null. We just simulate parent in this case.
if (!parent || !parent.tagName) {
parent = {
namespaceURI: NAMESPACE,
tagName: 'template'
};
}
const tagName = stringToLowerCase(element.tagName);
const parentTagName = stringToLowerCase(parent.tagName);
if (!ALLOWED_NAMESPACES[element.namespaceURI]) {
return false;
}
if (element.namespaceURI === SVG_NAMESPACE) {
// The only way to switch from HTML namespace to SVG
// is via <svg>. If it happens via any other tag, then
// it should be killed.
if (parent.namespaceURI === HTML_NAMESPACE) {
return tagName === 'svg';
}
// The only way to switch from MathML to SVG is via`
// svg if parent is either <annotation-xml> or MathML
// text integration points.
if (parent.namespaceURI === MATHML_NAMESPACE) {
return tagName === 'svg' && (parentTagName === 'annotation-xml' || MATHML_TEXT_INTEGRATION_POINTS[parentTagName]);
}
// We only allow elements that are defined in SVG
// spec. All others are disallowed in SVG namespace.
return Boolean(ALL_SVG_TAGS[tagName]);
}
if (element.namespaceURI === MATHML_NAMESPACE) {
// The only way to switch from HTML namespace to MathML
// is via <math>. If it happens via any other tag, then
// it should be killed.
if (parent.namespaceURI === HTML_NAMESPACE) {
return tagName === 'math';
}
// The only way to switch from SVG to MathML is via
// <math> and HTML integration points
if (parent.namespaceURI === SVG_NAMESPACE) {
return tagName === 'math' && HTML_INTEGRATION_POINTS[parentTagName];
}
// We only allow elements that are defined in MathML
// spec. All others are disallowed in MathML namespace.
return Boolean(ALL_MATHML_TAGS[tagName]);
}
if (element.namespaceURI === HTML_NAMESPACE) {
// The only way to switch from SVG to HTML is via
// HTML integration points, and from MathML to HTML
// is via MathML text integration points
if (parent.namespaceURI === SVG_NAMESPACE && !HTML_INTEGRATION_POINTS[parentTagName]) {
return false;
}
if (parent.namespaceURI === MATHML_NAMESPACE && !MATHML_TEXT_INTEGRATION_POINTS[parentTagName]) {
return false;
}
// We disallow tags that are specific for MathML
// or SVG and should never appear in HTML namespace
return !ALL_MATHML_TAGS[tagName] && (COMMON_SVG_AND_HTML_ELEMENTS[tagName] || !ALL_SVG_TAGS[tagName]);
}
// For XHTML and XML documents that support custom namespaces
if (PARSER_MEDIA_TYPE === 'application/xhtml+xml' && ALLOWED_NAMESPACES[element.namespaceURI]) {
return true;
}
// The code should never reach this place (this means
// that the element somehow got namespace that is not
// HTML, SVG, MathML or allowed via ALLOWED_NAMESPACES).
// Return false just in case.
return false;
};
/**
* _forceRemove
*
* @param node a DOM node
*/
const _forceRemove = function _forceRemove(node) {
arrayPush(DOMPurify.removed, {
element: node
});
try {
// eslint-disable-next-line unicorn/prefer-dom-node-remove
getParentNode(node).removeChild(node);
} catch (_) {
remove(node);
}
};
/**
* _removeAttribute
*
* @param name an Attribute name
* @param element a DOM node
*/
const _removeAttribute = function _removeAttribute(name, element) {
try {
arrayPush(DOMPurify.removed, {
attribute: element.getAttributeNode(name),
from: element
});
} catch (_) {
arrayPush(DOMPurify.removed, {
attribute: null,
from: element
});
}
element.removeAttribute(name);
// We void attribute values for unremovable "is" attributes
if (name === 'is') {
if (RETURN_DOM || RETURN_DOM_FRAGMENT) {
try {
_forceRemove(element);
} catch (_) {}
} else {
try {
element.setAttribute(name, '');
} catch (_) {}
}
}
};
/**
* _initDocument
*
* @param dirty - a string of dirty markup
* @return a DOM, filled with the dirty markup
*/
const _initDocument = function _initDocument(dirty) {
/* Create a HTML document */
let doc = null;
let leadingWhitespace = null;
if (FORCE_BODY) {
dirty = '<remove></remove>' + dirty;
} else {
/* If FORCE_BODY isn't used, leading whitespace needs to be preserved manually */
const matches = stringMatch(dirty, /^[\r\n\t ]+/);
leadingWhitespace = matches && matches[0];
}
if (PARSER_MEDIA_TYPE === 'application/xhtml+xml' && NAMESPACE === HTML_NAMESPACE) {
// Root of XHTML doc must contain xmlns declaration (see https://www.w3.org/TR/xhtml1/normative.html#strict)
dirty = '<html xmlns="http://www.w3.org/1999/xhtml"><head></head><body>' + dirty + '</body></html>';
}
const dirtyPayload = trustedTypesPolicy ? trustedTypesPolicy.createHTML(dirty) : dirty;
/*
* Use the DOMParser API by default, fallback later if needs be
* DOMParser not work for svg when has multiple root element.
*/
if (NAMESPACE === HTML_NAMESPACE) {
try {
doc = new DOMParser().parseFromString(dirtyPayload, PARSER_MEDIA_TYPE);
} catch (_) {}
}
/* Use createHTMLDocument in case DOMParser is not available */
if (!doc || !doc.documentElement) {
doc = implementation.createDocument(NAMESPACE, 'template', null);
try {
doc.documentElement.innerHTML = IS_EMPTY_INPUT ? emptyHTML : dirtyPayload;
} catch (_) {
// Syntax error if dirtyPayload is invalid xml
}
}
const body = doc.body || doc.documentElement;
if (dirty && leadingWhitespace) {
body.insertBefore(document.createTextNode(leadingWhitespace), body.childNodes[0] || null);
}
/* Work on whole document or just its body */
if (NAMESPACE === HTML_NAMESPACE) {
return getElementsByTagName.call(doc, WHOLE_DOCUMENT ? 'html' : 'body')[0];
}
return WHOLE_DOCUMENT ? doc.documentElement : body;
};
/**
* Creates a NodeIterator object that you can use to traverse filtered lists of nodes or elements in a document.
*
* @param root The root element or node to start traversing on.
* @return The created NodeIterator
*/
const _createNodeIterator = function _createNodeIterator(root) {
return createNodeIterator.call(root.ownerDocument || root, root,
// eslint-disable-next-line no-bitwise
NodeFilter.SHOW_ELEMENT | NodeFilter.SHOW_COMMENT | NodeFilter.SHOW_TEXT | NodeFilter.SHOW_PROCESSING_INSTRUCTION | NodeFilter.SHOW_CDATA_SECTION, null);
};
/**
* Strip template-engine expressions ({{...}}, ${...}, <%...%>) from the
* character data of an element subtree. Used as the final safety net for
* SAFE_FOR_TEMPLATES on every DOM-returning code path so that expressions
* which only form after text-node normalization (e.g. fragments split across
* stripped elements) cannot survive into a template-evaluating framework.
*
* Walks text/comment/CDATA/processing-instruction nodes and mutates `.data`
* in place rather than round-tripping through innerHTML. This preserves
* descendant node references (important for IN_PLACE callers), avoids a
* serialize/reparse cycle, and reads literal character data — which means
* `<%...%>` in text content matches the ERB regex against its real bytes
* instead of the HTML-entity-escaped form innerHTML would produce.
*
* Attribute values are not visited here; SAFE_FOR_TEMPLATES handling for
* attributes is performed during the per-node `_sanitizeAttributes` pass.
*
* @param node The root element whose character data should be scrubbed.
*/
const _scrubTemplateExpressions = function _scrubTemplateExpressions(node) {
node.normalize();
const walker = createNodeIterator.call(node.ownerDocument || node, node,
// eslint-disable-next-line no-bitwise
NodeFilter.SHOW_TEXT | NodeFilter.SHOW_COMMENT | NodeFilter.SHOW_CDATA_SECTION | NodeFilter.SHOW_PROCESSING_INSTRUCTION, null);
let currentNode = walker.nextNode();
while (currentNode) {
let data = currentNode.data;
arrayForEach([MUSTACHE_EXPR$1, ERB_EXPR$1, TMPLIT_EXPR$1], expr => {
data = stringReplace(data, expr,