diff --git a/dist/purify.min.js b/dist/purify.min.js index 975b1531f..b3abe5d9d 100644 --- a/dist/purify.min.js +++ b/dist/purify.min.js @@ -1,1340 +1,3 @@ /*! @license DOMPurify 3.2.0 | (c) Cure53 and other contributors | Released under the Apache license 2.0 and Mozilla Public License 2.0 | github.com/cure53/DOMPurify/blob/3.2.0/LICENSE */ - -(function (global, factory) { - typeof exports === 'object' && typeof module !== 'undefined' ? module.exports = factory() : - typeof define === 'function' && define.amd ? define(factory) : - (global = typeof globalThis !== 'undefined' ? globalThis : global || self, global.DOMPurify = factory()); -})(this, (function () { 'use strict'; - - const { - entries, - setPrototypeOf, - isFrozen, - getPrototypeOf, - getOwnPropertyDescriptor - } = Object; - let { - freeze, - seal, - create - } = Object; // eslint-disable-line import/no-mutable-exports - let { - apply, - construct - } = typeof Reflect !== 'undefined' && Reflect; - if (!freeze) { - freeze = function freeze(x) { - return x; - }; - } - if (!seal) { - seal = function seal(x) { - return x; - }; - } - if (!apply) { - apply = function apply(fun, thisValue, args) { - return fun.apply(thisValue, args); - }; - } - if (!construct) { - construct = function construct(Func, args) { - return new Func(...args); - }; - } - const arrayForEach = unapply(Array.prototype.forEach); - const arrayPop = unapply(Array.prototype.pop); - const arrayPush = unapply(Array.prototype.push); - 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 objectHasOwnProperty = unapply(Object.prototype.hasOwnProperty); - 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) { - for (var _len = arguments.length, args = new Array(_len > 1 ? _len - 1 : 0), _key = 1; _key < _len; _key++) { - args[_key - 1] = arguments[_key]; - } - 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 _len2 = arguments.length, args = new Array(_len2), _key2 = 0; _key2 < _len2; _key2++) { - args[_key2] = arguments[_key2]; - } - 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); - } - 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 [property, value] of entries(object)) { - const isPropertyExist = objectHasOwnProperty(object, property); - if (isPropertyExist) { - if (Array.isArray(value)) { - newObject[property] = cleanArray(value); - } else if (value && typeof value === 'object' && value.constructor === Object) { - newObject[property] = clone(value); - } else { - newObject[property] = value; - } - } - } - return newObject; - } - /** - * 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; - } - - 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', '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 - const svg$1 = freeze(['svg', 'a', 'altglyph', 'altglyphdef', 'altglyphitem', 'animatecolor', 'animatemotion', 'animatetransform', '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', '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', 'controls', 'controlslist', 'coords', 'crossorigin', 'datetime', 'decoding', 'default', 'dir', 'disabled', 'disablepictureinpicture', 'disableremoteplayback', 'download', 'draggable', 'enctype', 'enterkeyhint', 'face', 'for', 'headers', 'height', 'hidden', 'high', 'href', 'hreflang', 'id', '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', 'pattern', 'placeholder', 'playsinline', 'popover', 'popovertarget', 'popovertargetaction', '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', 'translate', 'type', 'usemap', 'valign', 'value', 'width', 'wrap', 'xmlns', 'slot']); - 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', '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', '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']); - const xml = freeze(['xlink:href', 'xml:id', 'xlink:title', 'xml:space', 'xmlns:xlink']); - - // eslint-disable-next-line unicorn/better-regex - const MUSTACHE_EXPR = seal(/\{\{[\w\W]*|[\w\W]*\}\}/gm); // Specify template detection regex for SAFE_FOR_TEMPLATES mode - const ERB_EXPR = seal(/<%[\w\W]*|[\w\W]*%>/gm); - const TMPLIT_EXPR = seal(/\${[\w\W]*}/gm); - 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):|[^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); - - var EXPRESSIONS = /*#__PURE__*/Object.freeze({ - __proto__: null, - ARIA_ATTR: ARIA_ATTR, - ATTR_WHITESPACE: ATTR_WHITESPACE, - CUSTOM_ELEMENT: CUSTOM_ELEMENT, - DATA_ATTR: DATA_ATTR, - DOCTYPE_NAME: DOCTYPE_NAME, - ERB_EXPR: ERB_EXPR, - IS_ALLOWED_URI: IS_ALLOWED_URI, - IS_SCRIPT_OR_DATA: IS_SCRIPT_OR_DATA, - MUSTACHE_EXPR: MUSTACHE_EXPR, - TMPLIT_EXPR: TMPLIT_EXPR - }); - - /* eslint-disable @typescript-eslint/indent */ - // https://developer.mozilla.org/en-US/docs/Web/API/Node/nodeType - const NODE_TYPE = { - element: 1, - attribute: 2, - text: 3, - cdataSection: 4, - entityReference: 5, - // Deprecated - entityNode: 6, - // Deprecated - progressingInstruction: 7, - comment: 8, - document: 9, - documentType: 10, - documentFragment: 11, - notation: 12 // Deprecated - }; - 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; - } - }; - function createDOMPurify() { - let window = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : getGlobal(); - const DOMPurify = root => createDOMPurify(root); - DOMPurify.version = '3.2.0'; - DOMPurify.removed = []; - if (!window || !window.document || window.document.nodeType !== NODE_TYPE.document) { - // 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; - const originalDocument = document; - const currentScript = originalDocument.currentScript; - const { - DocumentFragment, - HTMLTemplateElement, - Node, - Element, - NodeFilter, - NamedNodeMap = window.NamedNodeMap || window.MozNamedAttrMap, - HTMLFormElement, - DOMParser, - trustedTypes - } = window; - 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'); - // 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 { - implementation, - createNodeIterator, - createDocumentFragment, - getElementsByTagName - } = document; - const { - importNode - } = originalDocument; - let hooks = {}; - /** - * Expose whether this browser supports running the full DOMPurify. - */ - DOMPurify.isSupported = typeof entries === 'function' && typeof getParentNode === 'function' && implementation && implementation.createHTMLDocument !== undefined; - const { - MUSTACHE_EXPR, - ERB_EXPR, - TMPLIT_EXPR, - DATA_ATTR, - ARIA_ATTR, - IS_SCRIPT_OR_DATA, - ATTR_WHITESPACE, - CUSTOM_ELEMENT - } = EXPRESSIONS; - let { - IS_ALLOWED_URI: IS_ALLOWED_URI$1 - } = EXPRESSIONS; - /** - * 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; - /* 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 ... 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') ? addToSet({}, cfg.ALLOWED_TAGS, transformCaseFunc) : DEFAULT_ALLOWED_TAGS; - ALLOWED_ATTR = objectHasOwnProperty(cfg, 'ALLOWED_ATTR') ? addToSet({}, cfg.ALLOWED_ATTR, transformCaseFunc) : DEFAULT_ALLOWED_ATTR; - ALLOWED_NAMESPACES = objectHasOwnProperty(cfg, 'ALLOWED_NAMESPACES') ? addToSet({}, cfg.ALLOWED_NAMESPACES, stringToString) : DEFAULT_ALLOWED_NAMESPACES; - 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; - 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; - FORBID_CONTENTS = objectHasOwnProperty(cfg, 'FORBID_CONTENTS') ? addToSet({}, cfg.FORBID_CONTENTS, transformCaseFunc) : DEFAULT_FORBID_CONTENTS; - FORBID_TAGS = objectHasOwnProperty(cfg, 'FORBID_TAGS') ? addToSet({}, cfg.FORBID_TAGS, transformCaseFunc) : {}; - FORBID_ATTR = objectHasOwnProperty(cfg, 'FORBID_ATTR') ? addToSet({}, cfg.FORBID_ATTR, transformCaseFunc) : {}; - USE_PROFILES = objectHasOwnProperty(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 = cfg.ALLOWED_URI_REGEXP || IS_ALLOWED_URI; - NAMESPACE = cfg.NAMESPACE || HTML_NAMESPACE; - MATHML_TEXT_INTEGRATION_POINTS = cfg.MATHML_TEXT_INTEGRATION_POINTS || MATHML_TEXT_INTEGRATION_POINTS; - HTML_INTEGRATION_POINTS = cfg.HTML_INTEGRATION_POINTS || HTML_INTEGRATION_POINTS; - CUSTOM_ELEMENT_HANDLING = cfg.CUSTOM_ELEMENT_HANDLING || {}; - if (cfg.CUSTOM_ELEMENT_HANDLING && isRegexOrFunction(cfg.CUSTOM_ELEMENT_HANDLING.tagNameCheck)) { - CUSTOM_ELEMENT_HANDLING.tagNameCheck = cfg.CUSTOM_ELEMENT_HANDLING.tagNameCheck; - } - if (cfg.CUSTOM_ELEMENT_HANDLING && isRegexOrFunction(cfg.CUSTOM_ELEMENT_HANDLING.attributeNameCheck)) { - CUSTOM_ELEMENT_HANDLING.attributeNameCheck = cfg.CUSTOM_ELEMENT_HANDLING.attributeNameCheck; - } - if (cfg.CUSTOM_ELEMENT_HANDLING && typeof cfg.CUSTOM_ELEMENT_HANDLING.allowCustomizedBuiltInElements === 'boolean') { - CUSTOM_ELEMENT_HANDLING.allowCustomizedBuiltInElements = cfg.CUSTOM_ELEMENT_HANDLING.allowCustomizedBuiltInElements; - } - 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 = []; - 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); - } - } - /* Merge configuration parameters */ - if (cfg.ADD_TAGS) { - if (ALLOWED_TAGS === DEFAULT_ALLOWED_TAGS) { - ALLOWED_TAGS = clone(ALLOWED_TAGS); - } - addToSet(ALLOWED_TAGS, cfg.ADD_TAGS, transformCaseFunc); - } - if (cfg.ADD_ATTR) { - if (ALLOWED_ATTR === DEFAULT_ALLOWED_ATTR) { - ALLOWED_ATTR = clone(ALLOWED_ATTR); - } - addToSet(ALLOWED_ATTR, cfg.ADD_ATTR, transformCaseFunc); - } - if (cfg.ADD_URI_SAFE_ATTR) { - addToSet(URI_SAFE_ATTRIBUTES, cfg.ADD_URI_SAFE_ATTR, transformCaseFunc); - } - if (cfg.FORBID_CONTENTS) { - if (FORBID_CONTENTS === DEFAULT_FORBID_CONTENTS) { - FORBID_CONTENTS = clone(FORBID_CONTENTS); - } - addToSet(FORBID_CONTENTS, cfg.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 . 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 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 . 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 - // 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' && !ALLOWED_ATTR[name]) { - 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 = '' + 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 = '' + dirty + ''; - } - 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); - }; - /** - * _isClobbered - * - * @param element element to check for clobbering attacks - * @return true if clobbered, false if safe - */ - const _isClobbered = function _isClobbered(element) { - 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'); - }; - /** - * Checks whether the given object is a DOM node. - * - * @param value object to check whether it's a DOM node - * @return true is object is a DOM node - */ - const _isNode = function _isNode(value) { - return typeof Node === 'function' && value instanceof Node; - }; - function _executeHook(entryPoint, currentNode, data) { - if (!hooks[entryPoint]) { - return; - } - arrayForEach(hooks[entryPoint], hook => { - hook.call(DOMPurify, currentNode, data, CONFIG); - }); - } - /** - * _sanitizeElements - * - * @protect nodeName - * @protect textContent - * @protect removeChild - * @param currentNode to check for permission to exist - * @return true if node was killed, false if left alive - */ - const _sanitizeElements = function _sanitizeElements(currentNode) { - let content = null; - /* Execute a hook if present */ - _executeHook('beforeSanitizeElements', currentNode, null); - /* Check if element is clobbered or can clobber */ - if (_isClobbered(currentNode)) { - _forceRemove(currentNode); - return true; - } - /* Now let's check the element's type and name */ - const tagName = transformCaseFunc(currentNode.nodeName); - /* Execute a hook if present */ - _executeHook('uponSanitizeElement', currentNode, { - tagName, - allowedTags: ALLOWED_TAGS - }); - /* Detect mXSS attempts abusing namespace confusion */ - if (currentNode.hasChildNodes() && !_isNode(currentNode.firstElementChild) && regExpTest(/<[/\w]/g, currentNode.innerHTML) && regExpTest(/<[/\w]/g, currentNode.textContent)) { - _forceRemove(currentNode); - return true; - } - /* Remove any occurrence of processing instructions */ - if (currentNode.nodeType === NODE_TYPE.progressingInstruction) { - _forceRemove(currentNode); - return true; - } - /* Remove any kind of possibly harmful comments */ - if (SAFE_FOR_XML && currentNode.nodeType === NODE_TYPE.comment && regExpTest(/<[/\w]/g, currentNode.data)) { - _forceRemove(currentNode); - return true; - } - /* Remove element if anything forbids its presence */ - if (!ALLOWED_TAGS[tagName] || FORBID_TAGS[tagName]) { - /* Check if we have a custom element to handle */ - if (!FORBID_TAGS[tagName] && _isBasicCustomElement(tagName)) { - if (CUSTOM_ELEMENT_HANDLING.tagNameCheck instanceof RegExp && regExpTest(CUSTOM_ELEMENT_HANDLING.tagNameCheck, tagName)) { - return false; - } - if (CUSTOM_ELEMENT_HANDLING.tagNameCheck instanceof Function && CUSTOM_ELEMENT_HANDLING.tagNameCheck(tagName)) { - return false; - } - } - /* Keep content except for bad-listed elements */ - if (KEEP_CONTENT && !FORBID_CONTENTS[tagName]) { - const parentNode = getParentNode(currentNode) || currentNode.parentNode; - const childNodes = getChildNodes(currentNode) || currentNode.childNodes; - if (childNodes && parentNode) { - const childCount = childNodes.length; - for (let i = childCount - 1; i >= 0; --i) { - const childClone = cloneNode(childNodes[i], true); - childClone.__removalCount = (currentNode.__removalCount || 0) + 1; - parentNode.insertBefore(childClone, getNextSibling(currentNode)); - } - } - } - _forceRemove(currentNode); - return true; - } - /* Check whether element has a valid namespace */ - if (currentNode instanceof Element && !_checkValidNamespace(currentNode)) { - _forceRemove(currentNode); - return true; - } - /* Make sure that older browsers don't get fallback-tag mXSS */ - if ((tagName === 'noscript' || tagName === 'noembed' || tagName === 'noframes') && regExpTest(/<\/no(script|embed|frames)/i, currentNode.innerHTML)) { - _forceRemove(currentNode); - return true; - } - /* Sanitize element content to be template-safe */ - if (SAFE_FOR_TEMPLATES && currentNode.nodeType === NODE_TYPE.text) { - /* Get the element's text content */ - content = currentNode.textContent; - arrayForEach([MUSTACHE_EXPR, ERB_EXPR, TMPLIT_EXPR], expr => { - content = stringReplace(content, expr, ' '); - }); - if (currentNode.textContent !== content) { - arrayPush(DOMPurify.removed, { - element: currentNode.cloneNode() - }); - currentNode.textContent = content; - } - } - /* Execute a hook if present */ - _executeHook('afterSanitizeElements', currentNode, null); - return false; - }; - /** - * _isValidAttribute - * - * @param lcTag Lowercase tag name of containing element. - * @param lcName Lowercase attribute name. - * @param value Attribute value. - * @return Returns true if `value` is valid, otherwise false. - */ - // eslint-disable-next-line complexity - const _isValidAttribute = function _isValidAttribute(lcTag, lcName, value) { - /* Make sure attribute cannot clobber */ - if (SANITIZE_DOM && (lcName === 'id' || lcName === 'name') && (value in document || value in formElement)) { - return false; - } - /* Allow valid data-* attributes: At least one character after "-" - (https://html.spec.whatwg.org/multipage/dom.html#embedding-custom-non-visible-data-with-the-data-*-attributes) - XML-compatible (https://html.spec.whatwg.org/multipage/infrastructure.html#xml-compatible and http://www.w3.org/TR/xml/#d0e804) - We don't need to check the value; it's always URI safe. */ - if (ALLOW_DATA_ATTR && !FORBID_ATTR[lcName] && regExpTest(DATA_ATTR, lcName)) ; else if (ALLOW_ARIA_ATTR && regExpTest(ARIA_ATTR, lcName)) ; else if (!ALLOWED_ATTR[lcName] || FORBID_ATTR[lcName]) { - if ( - // First condition does a very basic check if a) it's basically a valid custom element tagname AND - // b) if the tagName passes whatever the user has configured for CUSTOM_ELEMENT_HANDLING.tagNameCheck - // and c) if the attribute name passes whatever the user has configured for CUSTOM_ELEMENT_HANDLING.attributeNameCheck - _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)) || - // Alternative, second condition checks if it's an `is`-attribute, AND - // the value passes whatever the user has configured for CUSTOM_ELEMENT_HANDLING.tagNameCheck - 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))) ; 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stringMatch(tagName, CUSTOM_ELEMENT); - }; - /** - * _sanitizeAttributes - * - * @protect attributes - * @protect nodeName - * @protect removeAttribute - * @protect setAttribute - * - * @param currentNode to sanitize - */ - const _sanitizeAttributes = function _sanitizeAttributes(currentNode) { - /* Execute a hook if present */ - _executeHook('beforeSanitizeAttributes', currentNode, null); - const { - attributes - } = currentNode; - /* Check if we have attributes; if not we might have a text node */ - if (!attributes) { - return; - } - const hookEvent = { - attrName: '', - attrValue: '', - keepAttr: true, - allowedAttributes: ALLOWED_ATTR, - forceKeepAttr: undefined - }; - let l = attributes.length; - /* Go backwards over all attributes; safely remove bad ones */ - while (l--) { - const attr = attributes[l]; - const { - name, - namespaceURI, - value: attrValue - } = attr; - const lcName = transformCaseFunc(name); - let value = name === 'value' ? attrValue : stringTrim(attrValue); - /* 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{ - continue; - } - /* Remove attribute */ - _removeAttribute(name, currentNode); - /* Did the hooks approve of the attribute? */ - if (!hookEvent.keepAttr) { - continue; - } - /* Work around a security issue in jQuery 3.0 */ - if (!ALLOW_SELF_CLOSE_IN_ATTR && regExpTest(/\/>/i, value)) { - _removeAttribute(name, currentNode); - continue; - } - /* Sanitize attribute content to be template-safe */ - if (SAFE_FOR_TEMPLATES) { - arrayForEach([MUSTACHE_EXPR, ERB_EXPR, TMPLIT_EXPR], expr => { - value = stringReplace(value, expr, ' '); - }); - } - /* Is `value` valid for this attribute? */ - const lcTag = transformCaseFunc(currentNode.nodeName); - if (!_isValidAttribute(lcTag, lcName, value)) { - continue; - } - /* Handle attributes that require Trusted Types */ - if (trustedTypesPolicy && typeof trustedTypes === 'object' && typeof trustedTypes.getAttributeType === 'function') { - if (namespaceURI) ; else { - switch (trustedTypes.getAttributeType(lcTag, lcName)) { - case 'TrustedHTML': - { - value = trustedTypesPolicy.createHTML(value); - break; - } - case 'TrustedScriptURL': - { - value = trustedTypesPolicy.createScriptURL(value); - break; - } - } - } - } - /* Handle invalid data-* attribute set by try-catching it */ - try { - if (namespaceURI) { - currentNode.setAttributeNS(namespaceURI, name, value); - } else { - /* Fallback to setAttribute() for browser-unrecognized namespaces e.g. "x-schema". */ - currentNode.setAttribute(name, value); - } - if (_isClobbered(currentNode)) { - _forceRemove(currentNode); - } else { - arrayPop(DOMPurify.removed); - } - } catch (_) {} - } - /* Execute a hook if present */ - _executeHook('afterSanitizeAttributes', currentNode, null); - }; - /** - * _sanitizeShadowDOM - * - * @param fragment to iterate over recursively - */ - const _sanitizeShadowDOM = function _sanitizeShadowDOM(fragment) { - let shadowNode = null; - const shadowIterator = _createNodeIterator(fragment); - /* Execute a hook if present */ - _executeHook('beforeSanitizeShadowDOM', fragment, null); - while (shadowNode = shadowIterator.nextNode()) { - /* Execute a hook if present */ - _executeHook('uponSanitizeShadowNode', shadowNode, null); - /* Sanitize tags and elements */ - if (_sanitizeElements(shadowNode)) { - continue; - } - /* Deep shadow DOM detected */ - if (shadowNode.content instanceof DocumentFragment) { - _sanitizeShadowDOM(shadowNode.content); - } - /* Check attributes, sanitize if necessary */ - _sanitizeAttributes(shadowNode); - } - /* Execute a hook if present */ - _executeHook('afterSanitizeShadowDOM', fragment, null); - }; - // eslint-disable-next-line complexity - DOMPurify.sanitize = function (dirty) { - let cfg = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : {}; - let body = null; - let importedNode = null; - let currentNode = null; - let returnNode = null; - /* Make sure we have a string to sanitize. - DO NOT return early, as this will return the wrong type if - the user has requested a DOM object rather than a string */ - IS_EMPTY_INPUT = !dirty; - if (IS_EMPTY_INPUT) { - dirty = ''; - } - /* Stringify, in case dirty is an object */ - if (typeof dirty !== 'string' && !_isNode(dirty)) { - if (typeof dirty.toString === 'function') { - dirty = dirty.toString(); - if (typeof dirty !== 'string') { - throw typeErrorCreate('dirty is not a string, aborting'); - } - } else { - throw typeErrorCreate('toString is not a function'); - } - } - /* Return dirty HTML if DOMPurify cannot run */ - if (!DOMPurify.isSupported) { - return dirty; - } - /* Assign config vars */ - if (!SET_CONFIG) { - _parseConfig(cfg); - } - /* Clean up removed elements */ - DOMPurify.removed = []; - /* Check if dirty is correctly typed for IN_PLACE */ - if (typeof dirty === 'string') { - IN_PLACE = false; - } - if (IN_PLACE) { - /* Do some early pre-sanitization to avoid unsafe root nodes */ - if (dirty.nodeName) { - const tagName = transformCaseFunc(dirty.nodeName); - if (!ALLOWED_TAGS[tagName] || FORBID_TAGS[tagName]) { - throw typeErrorCreate('root node is forbidden and cannot be sanitized in-place'); - } - } - } else if (dirty instanceof Node) { - /* If dirty is a DOM element, append to an empty document to avoid - elements being stripped by the parser */ - body = _initDocument(''); - importedNode = body.ownerDocument.importNode(dirty, true); - if (importedNode.nodeType === NODE_TYPE.element && importedNode.nodeName === 'BODY') { - /* Node is already a body, use as is */ - body = importedNode; - } else if (importedNode.nodeName === 'HTML') { - body = importedNode; - } else { - // eslint-disable-next-line unicorn/prefer-dom-node-append - body.appendChild(importedNode); - } - } else { - /* Exit directly if we have nothing to do */ - if (!RETURN_DOM && !SAFE_FOR_TEMPLATES && !WHOLE_DOCUMENT && - // eslint-disable-next-line unicorn/prefer-includes - dirty.indexOf('<') === -1) { - return trustedTypesPolicy && RETURN_TRUSTED_TYPE ? trustedTypesPolicy.createHTML(dirty) : dirty; - } - /* Initialize the document to work on */ - body = _initDocument(dirty); - /* Check we have a DOM node from the data */ - if (!body) { - return RETURN_DOM ? null : RETURN_TRUSTED_TYPE ? emptyHTML : ''; - } - } - /* Remove first element node (ours) if FORCE_BODY is set */ - if (body && FORCE_BODY) { - _forceRemove(body.firstChild); - } - /* Get node iterator */ - const nodeIterator = _createNodeIterator(IN_PLACE ? dirty : body); - /* Now start iterating over the created document */ - while (currentNode = nodeIterator.nextNode()) { - /* Sanitize tags and elements */ - if (_sanitizeElements(currentNode)) { - continue; - } - /* Shadow DOM detected, sanitize it */ - if (currentNode.content instanceof DocumentFragment) { - _sanitizeShadowDOM(currentNode.content); - } - /* Check attributes, sanitize if necessary */ - _sanitizeAttributes(currentNode); - } - /* If we sanitized `dirty` in-place, return it. */ - if (IN_PLACE) { - return dirty; - 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body.ownerDocument.doctype.name && regExpTest(DOCTYPE_NAME, body.ownerDocument.doctype.name)) { - serializedHTML = '\n' + serializedHTML; - } - /* Sanitize final string template-safe */ - if (SAFE_FOR_TEMPLATES) { - arrayForEach([MUSTACHE_EXPR, ERB_EXPR, TMPLIT_EXPR], expr => { - serializedHTML = stringReplace(serializedHTML, expr, ' '); - }); - } - return trustedTypesPolicy && RETURN_TRUSTED_TYPE ? trustedTypesPolicy.createHTML(serializedHTML) : serializedHTML; - }; - DOMPurify.setConfig = function () { - let cfg = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : {}; - _parseConfig(cfg); - SET_CONFIG = true; - }; - DOMPurify.clearConfig = function () { - CONFIG = null; - SET_CONFIG = false; - }; - DOMPurify.isValidAttribute = function (tag, attr, value) { - /* Initialize shared config vars if necessary. */ - if (!CONFIG) { - _parseConfig({}); - } - const lcTag = transformCaseFunc(tag); - const lcName = transformCaseFunc(attr); - return _isValidAttribute(lcTag, 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\ No newline at end of file +{"version":3,"file":"purify.min.js","sources":[],"sourcesContent":[],"names":[],"mappings":";"} \ No newline at end of file diff --git a/rollup.config.js b/rollup.config.js index a63989229..b2ad51681 100644 --- a/rollup.config.js +++ b/rollup.config.js @@ -9,7 +9,6 @@ const { dts } = require('rollup-plugin-dts'); const pkg = require('./package.json'); const env = process.env.NODE_ENV; -const event = process.env.npm_lifecycle_event; // build, build:umd, ... const version = process.env.npm_package_version; const license = fs .readFileSync('./src/license_header', 'utf8') @@ -36,7 +35,7 @@ const config = [ ...commonOutputConfig, file: pkg.production, format: 'umd', - plugins: event === 'build' ? [terser()] : [], + plugins: [terser()], }, { ...commonOutputConfig,