(function (global, factory) {
typeof exports === 'object' && typeof module !== 'undefined' ? module.exports = factory() :
typeof define === 'function' && define.amd ? define('dompurify',factory) :
(global.DOMPurify = factory());
}(this, (function () { 'use strict';
var freeze$1 = Object.freeze || function (x) {
return x;
};
var html = freeze$1(['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', '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', 'pre', 'progress', 'q', 'rp', 'rt', 'ruby', 's', 'samp', 'section', 'select', 'shadow', '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']);
// SVG
var svg = freeze$1(['svg', 'a', 'altglyph', 'altglyphdef', 'altglyphitem', 'animatecolor', 'animatemotion', 'animatetransform', 'audio', 'canvas', 'circle', 'clippath', 'defs', 'desc', 'ellipse', 'filter', 'font', 'g', 'glyph', 'glyphref', 'hkern', 'image', 'line', 'lineargradient', 'marker', 'mask', 'metadata', 'mpath', 'path', 'pattern', 'polygon', 'polyline', 'radialgradient', 'rect', 'stop', 'style', 'switch', 'symbol', 'text', 'textpath', 'title', 'tref', 'tspan', 'video', 'view', 'vkern']);
var svgFilters = freeze$1(['feBlend', 'feColorMatrix', 'feComponentTransfer', 'feComposite', 'feConvolveMatrix', 'feDiffuseLighting', 'feDisplacementMap', 'feDistantLight', 'feFlood', 'feFuncA', 'feFuncB', 'feFuncG', 'feFuncR', 'feGaussianBlur', 'feMerge', 'feMergeNode', 'feMorphology', 'feOffset', 'fePointLight', 'feSpecularLighting', 'feSpotLight', 'feTile', 'feTurbulence']);
var mathMl = freeze$1(['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']);
var text = freeze$1(['#text']);
var freeze$2 = Object.freeze || function (x) {
return x;
};
var html$1 = freeze$2(['accept', 'action', 'align', 'alt', 'autocomplete', 'background', 'bgcolor', 'border', 'cellpadding', 'cellspacing', 'checked', 'cite', 'class', 'clear', 'color', 'cols', 'colspan', 'controls', 'coords', 'crossorigin', 'datetime', 'default', 'dir', 'disabled', 'download', 'enctype', 'face', 'for', 'headers', 'height', 'hidden', 'high', 'href', 'hreflang', 'id', 'integrity', 'ismap', 'label', 'lang', 'list', 'loop', 'low', 'max', 'maxlength', 'media', 'method', 'min', 'minlength', 'multiple', 'name', 'noshade', 'novalidate', 'nowrap', 'open', 'optimum', 'pattern', 'placeholder', 'poster', 'preload', 'pubdate', 'radiogroup', 'readonly', 'rel', 'required', 'rev', 'reversed', 'role', 'rows', 'rowspan', 'spellcheck', 'scope', 'selected', 'shape', 'size', 'sizes', 'span', 'srclang', 'start', 'src', 'srcset', 'step', 'style', 'summary', 'tabindex', 'title', 'type', 'usemap', 'valign', 'value', 'width', 'xmlns']);
var svg$1 = freeze$2(['accent-height', 'accumulate', 'additive', 'alignment-baseline', 'ascent', 'attributename', 'attributetype', 'azimuth', 'basefrequency', 'baseline-shift', 'begin', 'bias', 'by', 'class', 'clip', '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', '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', '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', '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', 'specularconstant', 'specularexponent', 'spreadmethod', 'stddeviation', 'stitchtiles', 'stop-color', 'stop-opacity', 'stroke-dasharray', 'stroke-dashoffset', 'stroke-linecap', 'stroke-linejoin', 'stroke-miterlimit', 'stroke-opacity', 'stroke', 'stroke-width', 'style', 'surfacescale', 'tabindex', 'targetx', 'targety', 'transform', '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']);
var mathMl$1 = freeze$2(['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']);
var xml = freeze$2(['xlink:href', 'xml:id', 'xlink:title', 'xml:space', 'xmlns:xlink']);
var hasOwnProperty = Object.hasOwnProperty;
var setPrototypeOf = Object.setPrototypeOf;
var _ref$1 = typeof Reflect !== 'undefined' && Reflect;
var apply$1 = _ref$1.apply;
if (!apply$1) {
apply$1 = function apply(fun, thisValue, args) {
return fun.apply(thisValue, args);
};
}
/* Add properties to a lookup table */
function addToSet(set, array) {
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);
}
var l = array.length;
while (l--) {
var element = array[l];
if (typeof element === 'string') {
var lcElement = element.toLowerCase();
if (lcElement !== element) {
// Config presets (e.g. tags.js, attrs.js) are immutable.
if (!Object.isFrozen(array)) {
array[l] = lcElement;
}
element = lcElement;
}
}
set[element] = true;
}
return set;
}
/* Shallow clone an object */
function clone(object) {
var newObject = {};
var property = void 0;
for (property in object) {
if (apply$1(hasOwnProperty, object, [property])) {
newObject[property] = object[property];
}
}
return newObject;
}
var seal = Object.seal || function (x) {
return x;
};
var MUSTACHE_EXPR = seal(/\{\{[\s\S]*|[\s\S]*\}\}/gm); // Specify template detection regex for SAFE_FOR_TEMPLATES mode
var ERB_EXPR = seal(/<%[\s\S]*|[\s\S]*%>/gm);
var DATA_ATTR = seal(/^data-[\-\w.\u00B7-\uFFFF]/); // eslint-disable-line no-useless-escape
var ARIA_ATTR = seal(/^aria-[\-\w]+$/); // eslint-disable-line no-useless-escape
var IS_ALLOWED_URI = seal(/^(?:(?:(?:f|ht)tps?|mailto|tel|callto|cid|xmpp):|[^a-z]|[a-z+.\-]+(?:[^a-z+.\-:]|$))/i // eslint-disable-line no-useless-escape
);
var IS_SCRIPT_OR_DATA = seal(/^(?:\w+script|data):/i);
var ATTR_WHITESPACE = seal(/[\u0000-\u0020\u00A0\u1680\u180E\u2000-\u2029\u205f\u3000]/g // eslint-disable-line no-control-regex
);
var _typeof = typeof Symbol === "function" && typeof Symbol.iterator === "symbol" ? function (obj) { return typeof obj; } : function (obj) { return obj && typeof Symbol === "function" && obj.constructor === Symbol && obj !== Symbol.prototype ? "symbol" : typeof obj; };
function _toConsumableArray(arr) { if (Array.isArray(arr)) { for (var i = 0, arr2 = Array(arr.length); i < arr.length; i++) { arr2[i] = arr[i]; } return arr2; } else { return Array.from(arr); } }
var _ref = typeof Reflect !== 'undefined' && Reflect;
var apply = _ref.apply;
var arraySlice = Array.prototype.slice;
var freeze = Object.freeze;
var getGlobal = function getGlobal() {
return typeof window === 'undefined' ? null : window;
};
if (!apply) {
apply = function apply(fun, thisValue, args) {
return fun.apply(thisValue, args);
};
}
/**
* Creates a no-op policy for internal use only.
* Don't export this function outside this module!
* @param {?TrustedTypePolicyFactory} trustedTypes The policy factory.
* @param {Document} document The document object (to determine policy name suffix)
* @return {?TrustedTypePolicy} The policy created (or null, if Trusted Types
* are not supported).
*/
var _createTrustedTypesPolicy = function _createTrustedTypesPolicy(trustedTypes, document) {
if ((typeof trustedTypes === 'undefined' ? 'undefined' : _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.
var suffix = null;
var ATTR_NAME = 'data-tt-policy-suffix';
if (document.currentScript && document.currentScript.hasAttribute(ATTR_NAME)) {
suffix = document.currentScript.getAttribute(ATTR_NAME);
}
var policyName = 'dompurify' + (suffix ? '#' + suffix : '');
try {
return trustedTypes.createPolicy(policyName, {
createHTML: function createHTML(html$$1) {
return html$$1;
}
});
} catch (error) {
// 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;
}
};
function createDOMPurify() {
var window = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : getGlobal();
var DOMPurify = function DOMPurify(root) {
return createDOMPurify(root);
};
/**
* Version label, exposed for easier checks
* if DOMPurify is up to date or not
*/
DOMPurify.version = '2.0.7';
/**
* Array of elements that DOMPurify removed during sanitation.
* Empty if nothing was removed.
*/
DOMPurify.removed = [];
if (!window || !window.document || window.document.nodeType !== 9) {
// Not running in a browser, provide a factory function
// so that you can pass your own Window
DOMPurify.isSupported = false;
return DOMPurify;
}
var originalDocument = window.document;
var useDOMParser = false;
var removeTitle = false;
var document = window.document;
var DocumentFragment = window.DocumentFragment,
HTMLTemplateElement = window.HTMLTemplateElement,
Node = window.Node,
NodeFilter = window.NodeFilter,
_window$NamedNodeMap = window.NamedNodeMap,
NamedNodeMap = _window$NamedNodeMap === undefined ? window.NamedNodeMap || window.MozNamedAttrMap : _window$NamedNodeMap,
Text = window.Text,
Comment = window.Comment,
DOMParser = window.DOMParser,
TrustedTypes = window.TrustedTypes;
// 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') {
var template = document.createElement('template');
if (template.content && template.content.ownerDocument) {
document = template.content.ownerDocument;
}
}
var trustedTypesPolicy = _createTrustedTypesPolicy(TrustedTypes, originalDocument);
var emptyHTML = trustedTypesPolicy ? trustedTypesPolicy.createHTML('') : '';
var _document = document,
implementation = _document.implementation,
createNodeIterator = _document.createNodeIterator,
getElementsByTagName = _document.getElementsByTagName,
createDocumentFragment = _document.createDocumentFragment;
var importNode = originalDocument.importNode;
var hooks = {};
/**
* Expose whether this browser supports running the full DOMPurify.
*/
DOMPurify.isSupported = implementation && typeof implementation.createHTMLDocument !== 'undefined' && document.documentMode !== 9;
var MUSTACHE_EXPR$$1 = MUSTACHE_EXPR,
ERB_EXPR$$1 = ERB_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;
var 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 */
var ALLOWED_TAGS = null;
var DEFAULT_ALLOWED_TAGS = addToSet({}, [].concat(_toConsumableArray(html), _toConsumableArray(svg), _toConsumableArray(svgFilters), _toConsumableArray(mathMl), _toConsumableArray(text)));
/* Allowed attribute names */
var ALLOWED_ATTR = null;
var DEFAULT_ALLOWED_ATTR = addToSet({}, [].concat(_toConsumableArray(html$1), _toConsumableArray(svg$1), _toConsumableArray(mathMl$1), _toConsumableArray(xml)));
/* Explicitly forbidden tags (overrides ALLOWED_TAGS/ADD_TAGS) */
var FORBID_TAGS = null;
/* Explicitly forbidden attributes (overrides ALLOWED_ATTR/ADD_ATTR) */
var FORBID_ATTR = null;
/* Decide if ARIA attributes are okay */
var ALLOW_ARIA_ATTR = true;
/* Decide if custom data attributes are okay */
var ALLOW_DATA_ATTR = true;
/* Decide if unknown protocols are okay */
var ALLOW_UNKNOWN_PROTOCOLS = false;
/* Output should be safe for jQuery's $() factory? */
var SAFE_FOR_JQUERY = false;
/* Output should be safe for common template engines.
* This means, DOMPurify removes data attributes, mustaches and ERB
*/
var SAFE_FOR_TEMPLATES = false;
/* Decide if document with ... should be returned */
var WHOLE_DOCUMENT = false;
/* Track whether config is already set on this instance of DOMPurify. */
var 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 */
var 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
*/
var 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) */
var RETURN_DOM_FRAGMENT = false;
/* If `RETURN_DOM` or `RETURN_DOM_FRAGMENT` is enabled, decide if the returned DOM
* `Node` is imported into the current `Document`. If this flag is not enabled the
* `Node` will belong (its ownerDocument) to a fresh `HTMLDocument`, created by
* DOMPurify. */
var RETURN_DOM_IMPORT = false;
/* Try to return a Trusted Type object instead of a string, retrun a string in
* case Trusted Types are not supported */
var RETURN_TRUSTED_TYPE = false;
/* Output should be free from DOM clobbering attacks? */
var SANITIZE_DOM = true;
/* Keep element content when removing element? */
var 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 */
var IN_PLACE = false;
/* Allow usage of profiles like html, svg and mathMl */
var USE_PROFILES = {};
/* Tags to ignore content of when KEEP_CONTENT is true */
var FORBID_CONTENTS = addToSet({}, ['annotation-xml', 'audio', 'colgroup', 'desc', 'foreignobject', 'head', 'iframe', 'math', 'mi', 'mn', 'mo', 'ms', 'mtext', 'noembed', 'noframes', 'plaintext', 'script', 'style', 'svg', 'template', 'thead', 'title', 'video', 'xmp']);
/* Tags that are safe for data: URIs */
var DATA_URI_TAGS = addToSet({}, ['audio', 'video', 'img', 'source', 'image']);
/* Attributes safe for values like "javascript:" */
var URI_SAFE_ATTRIBUTES = null;
var DEFAULT_URI_SAFE_ATTRIBUTES = addToSet({}, ['alt', 'class', 'for', 'id', 'label', 'name', 'pattern', 'placeholder', 'summary', 'title', 'value', 'style', 'xmlns']);
/* Keep a reference to config to pass to hooks */
var CONFIG = null;
/* Ideally, do not touch anything below this line */
/* ______________________________________________ */
var formElement = document.createElement('form');
/**
* _parseConfig
*
* @param {Object} cfg optional config literal
*/
// eslint-disable-next-line complexity
var _parseConfig = function _parseConfig(cfg) {
if (CONFIG && CONFIG === cfg) {
return;
}
/* Shield configuration object from tampering */
if (!cfg || (typeof cfg === 'undefined' ? 'undefined' : _typeof(cfg)) !== 'object') {
cfg = {};
}
/* Set configuration parameters */
ALLOWED_TAGS = 'ALLOWED_TAGS' in cfg ? addToSet({}, cfg.ALLOWED_TAGS) : DEFAULT_ALLOWED_TAGS;
ALLOWED_ATTR = 'ALLOWED_ATTR' in cfg ? addToSet({}, cfg.ALLOWED_ATTR) : DEFAULT_ALLOWED_ATTR;
URI_SAFE_ATTRIBUTES = 'ADD_URI_SAFE_ATTR' in cfg ? addToSet(clone(DEFAULT_URI_SAFE_ATTRIBUTES), cfg.ADD_URI_SAFE_ATTR) : DEFAULT_URI_SAFE_ATTRIBUTES;
FORBID_TAGS = 'FORBID_TAGS' in cfg ? addToSet({}, cfg.FORBID_TAGS) : {};
FORBID_ATTR = 'FORBID_ATTR' in cfg ? addToSet({}, cfg.FORBID_ATTR) : {};
USE_PROFILES = 'USE_PROFILES' in cfg ? 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
SAFE_FOR_JQUERY = cfg.SAFE_FOR_JQUERY || false; // Default false
SAFE_FOR_TEMPLATES = cfg.SAFE_FOR_TEMPLATES || false; // Default false
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_DOM_IMPORT = cfg.RETURN_DOM_IMPORT || 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
KEEP_CONTENT = cfg.KEEP_CONTENT !== false; // Default true
IN_PLACE = cfg.IN_PLACE || false; // Default false
IS_ALLOWED_URI$$1 = cfg.ALLOWED_URI_REGEXP || IS_ALLOWED_URI$$1;
if (SAFE_FOR_TEMPLATES) {
ALLOW_DATA_ATTR = false;
}
if (RETURN_DOM_FRAGMENT) {
RETURN_DOM = true;
}
/* Parse profile info */
if (USE_PROFILES) {
ALLOWED_TAGS = addToSet({}, [].concat(_toConsumableArray(text)));
ALLOWED_ATTR = [];
if (USE_PROFILES.html === true) {
addToSet(ALLOWED_TAGS, html);
addToSet(ALLOWED_ATTR, html$1);
}
if (USE_PROFILES.svg === true) {
addToSet(ALLOWED_TAGS, svg);
addToSet(ALLOWED_ATTR, svg$1);
addToSet(ALLOWED_ATTR, xml);
}
if (USE_PROFILES.svgFilters === true) {
addToSet(ALLOWED_TAGS, svgFilters);
addToSet(ALLOWED_ATTR, svg$1);
addToSet(ALLOWED_ATTR, xml);
}
if (USE_PROFILES.mathMl === true) {
addToSet(ALLOWED_TAGS, mathMl);
addToSet(ALLOWED_ATTR, mathMl$1);
addToSet(ALLOWED_ATTR, xml);
}
}
/* Merge configuration parameters */
if (cfg.ADD_TAGS) {
if (ALLOWED_TAGS === DEFAULT_ALLOWED_TAGS) {
ALLOWED_TAGS = clone(ALLOWED_TAGS);
}
addToSet(ALLOWED_TAGS, cfg.ADD_TAGS);
}
if (cfg.ADD_ATTR) {
if (ALLOWED_ATTR === DEFAULT_ALLOWED_ATTR) {
ALLOWED_ATTR = clone(ALLOWED_ATTR);
}
addToSet(ALLOWED_ATTR, cfg.ADD_ATTR);
}
if (cfg.ADD_URI_SAFE_ATTR) {
addToSet(URI_SAFE_ATTRIBUTES, cfg.ADD_URI_SAFE_ATTR);
}
/* 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;
}
// Prevent further manipulation of configuration.
// Not available in IE8, Safari 5, etc.
if (freeze) {
freeze(cfg);
}
CONFIG = cfg;
};
/**
* _forceRemove
*
* @param {Node} node a DOM node
*/
var _forceRemove = function _forceRemove(node) {
DOMPurify.removed.push({ element: node });
try {
node.parentNode.removeChild(node);
} catch (error) {
node.outerHTML = emptyHTML;
}
};
/**
* _removeAttribute
*
* @param {String} name an Attribute name
* @param {Node} node a DOM node
*/
var _removeAttribute = function _removeAttribute(name, node) {
try {
DOMPurify.removed.push({
attribute: node.getAttributeNode(name),
from: node
});
} catch (error) {
DOMPurify.removed.push({
attribute: null,
from: node
});
}
node.removeAttribute(name);
};
/**
* _initDocument
*
* @param {String} dirty a string of dirty markup
* @return {Document} a DOM, filled with the dirty markup
*/
var _initDocument = function _initDocument(dirty) {
/* Create a HTML document */
var doc = void 0;
var leadingWhitespace = void 0;
if (FORCE_BODY) {
dirty = '' + dirty;
} else {
/* If FORCE_BODY isn't used, leading whitespace needs to be preserved manually */
var matches = dirty.match(/^[\s]+/);
leadingWhitespace = matches && matches[0];
if (leadingWhitespace) {
dirty = dirty.slice(leadingWhitespace.length);
}
}
/* Use DOMParser to workaround Firefox bug (see comment below) */
if (useDOMParser) {
try {
doc = new DOMParser().parseFromString(dirty, 'text/html');
} catch (error) {}
}
/* Remove title to fix a mXSS bug in older MS Edge */
if (removeTitle) {
addToSet(FORBID_TAGS, ['title']);
}
/* Otherwise use createHTMLDocument, because DOMParser is unsafe in
Safari (see comment below) */
if (!doc || !doc.documentElement) {
doc = implementation.createHTMLDocument('');
var _doc = doc,
body = _doc.body;
body.parentNode.removeChild(body.parentNode.firstElementChild);
body.outerHTML = trustedTypesPolicy ? trustedTypesPolicy.createHTML(dirty) : dirty;
}
if (dirty && leadingWhitespace) {
doc.body.insertBefore(document.createTextNode(leadingWhitespace), doc.body.childNodes[0] || null);
}
/* Work on whole document or just its body */
return getElementsByTagName.call(doc, WHOLE_DOCUMENT ? 'html' : 'body')[0];
};
// Firefox uses a different parser for innerHTML rather than
// DOMParser (see https://bugzilla.mozilla.org/show_bug.cgi?id=1205631)
// which means that you *must* use DOMParser, otherwise the output may
// not be safe if used in a document.write context later.
//
// So we feature detect the Firefox bug and use the DOMParser if necessary.
//
// Chrome 77 and other versions ship an mXSS bug that caused a bypass to
// happen. We now check for the mXSS trigger and react accordingly.
if (DOMPurify.isSupported) {
(function () {
try {
var doc = _initDocument('