1135 lines
42 KiB
JavaScript
1135 lines
42 KiB
JavaScript
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(function (global, factory) {
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typeof exports === 'object' && typeof module !== 'undefined' ? module.exports = factory() :
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typeof define === 'function' && define.amd ? define(factory) :
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(global.DOMPurify = factory());
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}(this, (function () { 'use strict';
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var freeze$1 = Object.freeze || function (x) {
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return x;
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};
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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']);
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// SVG
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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']);
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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']);
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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']);
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var text = freeze$1(['#text']);
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var freeze$2 = Object.freeze || function (x) {
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return x;
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};
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var html$1 = freeze$2(['accept', 'action', 'align', 'alt', 'autocomplete', 'background', 'bgcolor', 'border', 'cellpadding', 'cellspacing', 'checked', 'cite', 'class', 'clear', 'color', 'cols', 'colspan', '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', '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']);
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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', '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', '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', 'vert-adv-y', 'vert-origin-x', 'vert-origin-y', 'width', 'word-spacing', 'wrap', 'writing-mode', 'xchannelselector', 'ychannelselector', 'x', 'x1', 'x2', 'xmlns', 'y', 'y1', 'y2', 'z', 'zoomandpan']);
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var mathMl$1 = freeze$2(['accent', 'accentunder', 'align', 'bevelled', 'close', 'columnsalign', 'columnlines', 'columnspan', 'denomalign', 'depth', 'dir', 'display', 'displaystyle', 'fence', 'frame', 'height', 'href', 'id', 'largeop', 'length', 'linethickness', 'lspace', 'lquote', 'mathbackground', 'mathcolor', 'mathsize', 'mathvariant', 'maxsize', 'minsize', 'movablelimits', 'notation', 'numalign', 'open', 'rowalign', 'rowlines', 'rowspacing', 'rowspan', 'rspace', 'rquote', 'scriptlevel', 'scriptminsize', 'scriptsizemultiplier', 'selection', 'separator', 'separators', 'stretchy', 'subscriptshift', 'supscriptshift', 'symmetric', 'voffset', 'width', 'xmlns']);
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var xml = freeze$2(['xlink:href', 'xml:id', 'xlink:title', 'xml:space', 'xmlns:xlink']);
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var hasOwnProperty = Object.hasOwnProperty;
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var setPrototypeOf = Object.setPrototypeOf;
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var _ref$1 = typeof Reflect !== 'undefined' && Reflect;
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var apply$1 = _ref$1.apply;
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if (!apply$1) {
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apply$1 = function apply(fun, thisValue, args) {
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return fun.apply(thisValue, args);
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};
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}
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/* Add properties to a lookup table */
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function addToSet(set, array) {
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if (setPrototypeOf) {
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// Make 'in' and truthy checks like Boolean(set.constructor)
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// independent of any properties defined on Object.prototype.
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// Prevent prototype setters from intercepting set as a this value.
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setPrototypeOf(set, null);
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}
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var l = array.length;
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while (l--) {
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var element = array[l];
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if (typeof element === 'string') {
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var lcElement = element.toLowerCase();
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if (lcElement !== element) {
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// Config presets (e.g. tags.js, attrs.js) are immutable.
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if (!Object.isFrozen(array)) {
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array[l] = lcElement;
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}
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element = lcElement;
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}
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}
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set[element] = true;
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}
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return set;
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}
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/* Shallow clone an object */
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function clone(object) {
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var newObject = {};
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var property = void 0;
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for (property in object) {
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if (apply$1(hasOwnProperty, object, [property])) {
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newObject[property] = object[property];
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}
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}
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return newObject;
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}
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var seal = Object.seal || function (x) {
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return x;
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};
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var MUSTACHE_EXPR = seal(/\{\{[\s\S]*|[\s\S]*\}\}/gm); // Specify template detection regex for SAFE_FOR_TEMPLATES mode
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var ERB_EXPR = seal(/<%[\s\S]*|[\s\S]*%>/gm);
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var DATA_ATTR = seal(/^data-[\-\w.\u00B7-\uFFFF]/); // eslint-disable-line no-useless-escape
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var ARIA_ATTR = seal(/^aria-[\-\w]+$/); // eslint-disable-line no-useless-escape
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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
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);
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var IS_SCRIPT_OR_DATA = seal(/^(?:\w+script|data):/i);
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var ATTR_WHITESPACE = seal(/[\u0000-\u0020\u00A0\u1680\u180E\u2000-\u2029\u205f\u3000]/g // eslint-disable-line no-control-regex
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);
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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; };
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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); } }
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var _ref = typeof Reflect !== 'undefined' && Reflect;
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var apply = _ref.apply;
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var arraySlice = Array.prototype.slice;
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var freeze = Object.freeze;
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var getGlobal = function getGlobal() {
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return typeof window === 'undefined' ? null : window;
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};
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if (!apply) {
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apply = function apply(fun, thisValue, args) {
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return fun.apply(thisValue, args);
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};
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}
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/**
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* Creates a no-op policy for internal use only.
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* Don't export this function outside this module!
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* @param {?TrustedTypePolicyFactory} trustedTypes The policy factory.
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* @param {Document} document The document object (to determine policy name suffix)
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* @return {?TrustedTypePolicy} The policy created (or null, if Trusted Types
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* are not supported).
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*/
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var _createTrustedTypesPolicy = function _createTrustedTypesPolicy(trustedTypes, document) {
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if ((typeof trustedTypes === 'undefined' ? 'undefined' : _typeof(trustedTypes)) !== 'object' || typeof trustedTypes.createPolicy !== 'function') {
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return null;
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}
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// Allow the callers to control the unique policy name
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// by adding a data-tt-policy-suffix to the script element with the DOMPurify.
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// Policy creation with duplicate names throws in Trusted Types.
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var suffix = null;
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var ATTR_NAME = 'data-tt-policy-suffix';
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if (document.currentScript && document.currentScript.hasAttribute(ATTR_NAME)) {
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suffix = document.currentScript.getAttribute(ATTR_NAME);
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}
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var policyName = 'dompurify' + (suffix ? '#' + suffix : '');
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try {
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return trustedTypes.createPolicy(policyName, {
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createHTML: function createHTML(html$$1) {
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return html$$1;
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}
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});
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} catch (e) {
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// Policy creation failed (most likely another DOMPurify script has
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// already run). Skip creating the policy, as this will only cause errors
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// if TT are enforced.
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console.warn('TrustedTypes policy ' + policyName + ' could not be created.');
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return null;
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}
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};
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function createDOMPurify() {
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var window = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : getGlobal();
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var DOMPurify = function DOMPurify(root) {
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return createDOMPurify(root);
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};
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/**
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* Version label, exposed for easier checks
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* if DOMPurify is up to date or not
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*/
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DOMPurify.version = '1.0.9';
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/**
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* Array of elements that DOMPurify removed during sanitation.
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* Empty if nothing was removed.
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*/
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DOMPurify.removed = [];
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if (!window || !window.document || window.document.nodeType !== 9) {
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// Not running in a browser, provide a factory function
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// so that you can pass your own Window
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DOMPurify.isSupported = false;
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return DOMPurify;
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}
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var originalDocument = window.document;
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var useDOMParser = false;
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var removeTitle = false;
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var document = window.document;
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var DocumentFragment = window.DocumentFragment,
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HTMLTemplateElement = window.HTMLTemplateElement,
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Node = window.Node,
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NodeFilter = window.NodeFilter,
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_window$NamedNodeMap = window.NamedNodeMap,
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NamedNodeMap = _window$NamedNodeMap === undefined ? window.NamedNodeMap || window.MozNamedAttrMap : _window$NamedNodeMap,
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Text = window.Text,
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Comment = window.Comment,
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DOMParser = window.DOMParser,
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TrustedTypes = window.TrustedTypes;
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// As per issue #47, the web-components registry is inherited by a
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// new document created via createHTMLDocument. As per the spec
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// (http://w3c.github.io/webcomponents/spec/custom/#creating-and-passing-registries)
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// a new empty registry is used when creating a template contents owner
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// document, so we use that as our parent document to ensure nothing
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// is inherited.
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if (typeof HTMLTemplateElement === 'function') {
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var template = document.createElement('template');
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if (template.content && template.content.ownerDocument) {
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document = template.content.ownerDocument;
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}
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}
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var trustedTypesPolicy = _createTrustedTypesPolicy(TrustedTypes, originalDocument);
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var emptyHTML = trustedTypesPolicy ? trustedTypesPolicy.createHTML('') : '';
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var _document = document,
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implementation = _document.implementation,
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createNodeIterator = _document.createNodeIterator,
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getElementsByTagName = _document.getElementsByTagName,
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createDocumentFragment = _document.createDocumentFragment;
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var importNode = originalDocument.importNode;
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var hooks = {};
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/**
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* Expose whether this browser supports running the full DOMPurify.
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*/
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DOMPurify.isSupported = implementation && typeof implementation.createHTMLDocument !== 'undefined' && document.documentMode !== 9;
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var MUSTACHE_EXPR$$1 = MUSTACHE_EXPR,
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ERB_EXPR$$1 = ERB_EXPR,
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DATA_ATTR$$1 = DATA_ATTR,
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ARIA_ATTR$$1 = ARIA_ATTR,
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IS_SCRIPT_OR_DATA$$1 = IS_SCRIPT_OR_DATA,
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ATTR_WHITESPACE$$1 = ATTR_WHITESPACE;
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var IS_ALLOWED_URI$$1 = IS_ALLOWED_URI;
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/**
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* We consider the elements and attributes below to be safe. Ideally
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* don't add any new ones but feel free to remove unwanted ones.
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*/
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/* allowed element names */
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var ALLOWED_TAGS = null;
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var DEFAULT_ALLOWED_TAGS = addToSet({}, [].concat(_toConsumableArray(html), _toConsumableArray(svg), _toConsumableArray(svgFilters), _toConsumableArray(mathMl), _toConsumableArray(text)));
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/* Allowed attribute names */
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var ALLOWED_ATTR = null;
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var DEFAULT_ALLOWED_ATTR = addToSet({}, [].concat(_toConsumableArray(html$1), _toConsumableArray(svg$1), _toConsumableArray(mathMl$1), _toConsumableArray(xml)));
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/* Explicitly forbidden tags (overrides ALLOWED_TAGS/ADD_TAGS) */
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var FORBID_TAGS = null;
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/* Explicitly forbidden attributes (overrides ALLOWED_ATTR/ADD_ATTR) */
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var FORBID_ATTR = null;
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/* Decide if ARIA attributes are okay */
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var ALLOW_ARIA_ATTR = true;
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/* Decide if custom data attributes are okay */
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var ALLOW_DATA_ATTR = true;
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/* Decide if unknown protocols are okay */
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var ALLOW_UNKNOWN_PROTOCOLS = false;
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/* 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 <html>... 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;
|
||
|
|
|
||
|
|
/* 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({}, ['audio', 'head', 'math', 'script', 'style', 'template', 'svg', 'video']);
|
||
|
|
|
||
|
|
/* 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 = 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;
|
||
|
|
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
|
||
|
|
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 */
|
||
|
|
if (ALLOWED_TAGS.table) {
|
||
|
|
addToSet(ALLOWED_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 (err) {
|
||
|
|
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 (err) {
|
||
|
|
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 = '<remove></remove>' + 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 (err) {}
|
||
|
|
}
|
||
|
|
|
||
|
|
/* 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 (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.
|
||
|
|
//
|
||
|
|
// MS Edge, in older versions, is affected by an mXSS behavior. The second
|
||
|
|
// check tests for the behavior and fixes it if necessary.
|
||
|
|
if (DOMPurify.isSupported) {
|
||
|
|
(function () {
|
||
|
|
try {
|
||
|
|
var doc = _initDocument('<svg><p><style><img src="</style><img src=x onerror=1//">');
|
||
|
|
if (doc.querySelector('svg img')) {
|
||
|
|
useDOMParser = true;
|
||
|
|
}
|
||
|
|
} catch (err) {}
|
||
|
|
})();
|
||
|
|
(function () {
|
||
|
|
try {
|
||
|
|
var doc = _initDocument('<x/><title></title><img>');
|
||
|
|
if (doc.querySelector('title').innerHTML.match(/<\/title/)) {
|
||
|
|
removeTitle = true;
|
||
|
|
}
|
||
|
|
} catch (err) {}
|
||
|
|
})();
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* _createIterator
|
||
|
|
*
|
||
|
|
* @param {Document} root document/fragment to create iterator for
|
||
|
|
* @return {Iterator} iterator instance
|
||
|
|
*/
|
||
|
|
var _createIterator = function _createIterator(root) {
|
||
|
|
return createNodeIterator.call(root.ownerDocument || root, root, NodeFilter.SHOW_ELEMENT | NodeFilter.SHOW_COMMENT | NodeFilter.SHOW_TEXT, function () {
|
||
|
|
return NodeFilter.FILTER_ACCEPT;
|
||
|
|
}, false);
|
||
|
|
};
|
||
|
|
|
||
|
|
/**
|
||
|
|
* _isClobbered
|
||
|
|
*
|
||
|
|
* @param {Node} elm element to check for clobbering attacks
|
||
|
|
* @return {Boolean} true if clobbered, false if safe
|
||
|
|
*/
|
||
|
|
var _isClobbered = function _isClobbered(elm) {
|
||
|
|
if (elm instanceof Text || elm instanceof Comment) {
|
||
|
|
return false;
|
||
|
|
}
|
||
|
|
if (typeof elm.nodeName !== 'string' || typeof elm.textContent !== 'string' || typeof elm.removeChild !== 'function' || !(elm.attributes instanceof NamedNodeMap) || typeof elm.removeAttribute !== 'function' || typeof elm.setAttribute !== 'function') {
|
||
|
|
return true;
|
||
|
|
}
|
||
|
|
return false;
|
||
|
|
};
|
||
|
|
|
||
|
|
/**
|
||
|
|
* _isNode
|
||
|
|
*
|
||
|
|
* @param {Node} obj object to check whether it's a DOM node
|
||
|
|
* @return {Boolean} true is object is a DOM node
|
||
|
|
*/
|
||
|
|
var _isNode = function _isNode(obj) {
|
||
|
|
return (typeof Node === 'undefined' ? 'undefined' : _typeof(Node)) === 'object' ? obj instanceof Node : obj && (typeof obj === 'undefined' ? 'undefined' : _typeof(obj)) === 'object' && typeof obj.nodeType === 'number' && typeof obj.nodeName === 'string';
|
||
|
|
};
|
||
|
|
|
||
|
|
/**
|
||
|
|
* _executeHook
|
||
|
|
* Execute user configurable hooks
|
||
|
|
*
|
||
|
|
* @param {String} entryPoint Name of the hook's entry point
|
||
|
|
* @param {Node} currentNode node to work on with the hook
|
||
|
|
* @param {Object} data additional hook parameters
|
||
|
|
*/
|
||
|
|
var _executeHook = function _executeHook(entryPoint, currentNode, data) {
|
||
|
|
if (!hooks[entryPoint]) {
|
||
|
|
return;
|
||
|
|
}
|
||
|
|
|
||
|
|
hooks[entryPoint].forEach(function (hook) {
|
||
|
|
hook.call(DOMPurify, currentNode, data, CONFIG);
|
||
|
|
});
|
||
|
|
};
|
||
|
|
|
||
|
|
/**
|
||
|
|
* _sanitizeElements
|
||
|
|
*
|
||
|
|
* @protect nodeName
|
||
|
|
* @protect textContent
|
||
|
|
* @protect removeChild
|
||
|
|
*
|
||
|
|
* @param {Node} currentNode to check for permission to exist
|
||
|
|
* @return {Boolean} true if node was killed, false if left alive
|
||
|
|
*/
|
||
|
|
var _sanitizeElements = function _sanitizeElements(currentNode) {
|
||
|
|
var content = void 0;
|
||
|
|
|
||
|
|
/* 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 */
|
||
|
|
var tagName = currentNode.nodeName.toLowerCase();
|
||
|
|
|
||
|
|
/* Execute a hook if present */
|
||
|
|
_executeHook('uponSanitizeElement', currentNode, {
|
||
|
|
tagName: tagName,
|
||
|
|
allowedTags: ALLOWED_TAGS
|
||
|
|
});
|
||
|
|
|
||
|
|
/* Remove element if anything forbids its presence */
|
||
|
|
if (!ALLOWED_TAGS[tagName] || FORBID_TAGS[tagName]) {
|
||
|
|
/* Keep content except for black-listed elements */
|
||
|
|
if (KEEP_CONTENT && !FORBID_CONTENTS[tagName] && typeof currentNode.insertAdjacentHTML === 'function') {
|
||
|
|
try {
|
||
|
|
var htmlToInsert = currentNode.innerHTML;
|
||
|
|
currentNode.insertAdjacentHTML('AfterEnd', trustedTypesPolicy ? trustedTypesPolicy.createHTML(htmlToInsert) : htmlToInsert);
|
||
|
|
} catch (err) {}
|
||
|
|
}
|
||
|
|
_forceRemove(currentNode);
|
||
|
|
return true;
|
||
|
|
}
|
||
|
|
|
||
|
|
/* Convert markup to cover jQuery behavior */
|
||
|
|
if (SAFE_FOR_JQUERY && !currentNode.firstElementChild && (!currentNode.content || !currentNode.content.firstElementChild) && /</g.test(currentNode.textContent)) {
|
||
|
|
DOMPurify.removed.push({ element: currentNode.cloneNode() });
|
||
|
|
if (currentNode.innerHTML) {
|
||
|
|
currentNode.innerHTML = currentNode.innerHTML.replace(/</g, '<');
|
||
|
|
} else {
|
||
|
|
currentNode.innerHTML = currentNode.textContent.replace(/</g, '<');
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
/* Sanitize element content to be template-safe */
|
||
|
|
if (SAFE_FOR_TEMPLATES && currentNode.nodeType === 3) {
|
||
|
|
/* Get the element's text content */
|
||
|
|
content = currentNode.textContent;
|
||
|
|
content = content.replace(MUSTACHE_EXPR$$1, ' ');
|
||
|
|
content = content.replace(ERB_EXPR$$1, ' ');
|
||
|
|
if (currentNode.textContent !== content) {
|
||
|
|
DOMPurify.removed.push({ element: currentNode.cloneNode() });
|
||
|
|
currentNode.textContent = content;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
/* Execute a hook if present */
|
||
|
|
_executeHook('afterSanitizeElements', currentNode, null);
|
||
|
|
|
||
|
|
return false;
|
||
|
|
};
|
||
|
|
|
||
|
|
/**
|
||
|
|
* _isValidAttribute
|
||
|
|
*
|
||
|
|
* @param {string} lcTag Lowercase tag name of containing element.
|
||
|
|
* @param {string} lcName Lowercase attribute name.
|
||
|
|
* @param {string} value Attribute value.
|
||
|
|
* @return {Boolean} Returns true if `value` is valid, otherwise false.
|
||
|
|
*/
|
||
|
|
var _isValidAttribute = function _isValidAttribute(lcTag, lcName, value) {
|
||
|
|
/* Make sure attribute cannot clobber */
|
||
|
|
if (SANITIZE_DOM && (lcName === 'id' || lcName === 'name') && (value in document || value in formElement)) {
|
||
|
|
return false;
|
||
|
|
}
|
||
|
|
|
||
|
|
/* Sanitize attribute content to be template-safe */
|
||
|
|
if (SAFE_FOR_TEMPLATES) {
|
||
|
|
value = value.replace(MUSTACHE_EXPR$$1, ' ');
|
||
|
|
value = value.replace(ERB_EXPR$$1, ' ');
|
||
|
|
}
|
||
|
|
|
||
|
|
/* Allow valid data-* attributes: At least one character after "-"
|
||
|
|
(https://html.spec.whatwg.org/multipage/dom.html#embedding-custom-non-visible-data-with-the-data-*-attributes)
|
||
|
|
XML-compatible (https://html.spec.whatwg.org/multipage/infrastructure.html#xml-compatible and http://www.w3.org/TR/xml/#d0e804)
|
||
|
|
We don't need to check the value; it's always URI safe. */
|
||
|
|
if (ALLOW_DATA_ATTR && DATA_ATTR$$1.test(lcName)) {
|
||
|
|
// This attribute is safe
|
||
|
|
} else if (ALLOW_ARIA_ATTR && ARIA_ATTR$$1.test(lcName)) {
|
||
|
|
// This attribute is safe
|
||
|
|
/* Otherwise, check the name is permitted */
|
||
|
|
} else if (!ALLOWED_ATTR[lcName] || FORBID_ATTR[lcName]) {
|
||
|
|
return false;
|
||
|
|
|
||
|
|
/* Check value is safe. First, is attr inert? If so, is safe */
|
||
|
|
} else if (URI_SAFE_ATTRIBUTES[lcName]) {
|
||
|
|
// This attribute is safe
|
||
|
|
/* Check no script, data or unknown possibly unsafe URI
|
||
|
|
unless we know URI values are safe for that attribute */
|
||
|
|
} else if (IS_ALLOWED_URI$$1.test(value.replace(ATTR_WHITESPACE$$1, ''))) {
|
||
|
|
// This attribute is safe
|
||
|
|
/* Keep image data URIs alive if src/xlink:href is allowed */
|
||
|
|
/* Further prevent gadget XSS for dynamically built script tags */
|
||
|
|
} else if ((lcName === 'src' || lcName === 'xlink:href') && lcTag !== 'script' && value.indexOf('data:') === 0 && DATA_URI_TAGS[lcTag]) {
|
||
|
|
// This attribute is safe
|
||
|
|
/* Allow unknown protocols: This provides support for links that
|
||
|
|
are handled by protocol handlers which may be unknown ahead of
|
||
|
|
time, e.g. fb:, spotify: */
|
||
|
|
} else if (ALLOW_UNKNOWN_PROTOCOLS && !IS_SCRIPT_OR_DATA$$1.test(value.replace(ATTR_WHITESPACE$$1, ''))) {
|
||
|
|
// This attribute is safe
|
||
|
|
/* Check for binary attributes */
|
||
|
|
// eslint-disable-next-line no-negated-condition
|
||
|
|
} else if (!value) {
|
||
|
|
// Binary attributes are safe at this point
|
||
|
|
/* Anything else, presume unsafe, do not add it back */
|
||
|
|
} else {
|
||
|
|
return false;
|
||
|
|
}
|
||
|
|
return true;
|
||
|
|
};
|
||
|
|
|
||
|
|
/**
|
||
|
|
* _sanitizeAttributes
|
||
|
|
*
|
||
|
|
* @protect attributes
|
||
|
|
* @protect nodeName
|
||
|
|
* @protect removeAttribute
|
||
|
|
* @protect setAttribute
|
||
|
|
*
|
||
|
|
* @param {Node} node to sanitize
|
||
|
|
*/
|
||
|
|
// eslint-disable-next-line complexity
|
||
|
|
var _sanitizeAttributes = function _sanitizeAttributes(currentNode) {
|
||
|
|
var attr = void 0;
|
||
|
|
var value = void 0;
|
||
|
|
var lcName = void 0;
|
||
|
|
var idAttr = void 0;
|
||
|
|
var l = void 0;
|
||
|
|
/* Execute a hook if present */
|
||
|
|
_executeHook('beforeSanitizeAttributes', currentNode, null);
|
||
|
|
|
||
|
|
var attributes = currentNode.attributes;
|
||
|
|
|
||
|
|
/* Check if we have attributes; if not we might have a text node */
|
||
|
|
|
||
|
|
if (!attributes) {
|
||
|
|
return;
|
||
|
|
}
|
||
|
|
|
||
|
|
var hookEvent = {
|
||
|
|
attrName: '',
|
||
|
|
attrValue: '',
|
||
|
|
keepAttr: true,
|
||
|
|
allowedAttributes: ALLOWED_ATTR
|
||
|
|
};
|
||
|
|
l = attributes.length;
|
||
|
|
|
||
|
|
/* Go backwards over all attributes; safely remove bad ones */
|
||
|
|
while (l--) {
|
||
|
|
attr = attributes[l];
|
||
|
|
var _attr = attr,
|
||
|
|
name = _attr.name,
|
||
|
|
namespaceURI = _attr.namespaceURI;
|
||
|
|
|
||
|
|
value = attr.value.trim();
|
||
|
|
lcName = name.toLowerCase();
|
||
|
|
|
||
|
|
/* Execute a hook if present */
|
||
|
|
hookEvent.attrName = lcName;
|
||
|
|
hookEvent.attrValue = value;
|
||
|
|
hookEvent.keepAttr = true;
|
||
|
|
_executeHook('uponSanitizeAttribute', currentNode, hookEvent);
|
||
|
|
value = hookEvent.attrValue;
|
||
|
|
|
||
|
|
/* Remove attribute */
|
||
|
|
// Safari (iOS + Mac), last tested v8.0.5, crashes if you try to
|
||
|
|
// remove a "name" attribute from an <img> tag that has an "id"
|
||
|
|
// attribute at the time.
|
||
|
|
if (lcName === 'name' && currentNode.nodeName === 'IMG' && attributes.id) {
|
||
|
|
idAttr = attributes.id;
|
||
|
|
attributes = apply(arraySlice, attributes, []);
|
||
|
|
_removeAttribute('id', currentNode);
|
||
|
|
_removeAttribute(name, currentNode);
|
||
|
|
if (attributes.indexOf(idAttr) > l) {
|
||
|
|
currentNode.setAttribute('id', idAttr.value);
|
||
|
|
}
|
||
|
|
} else if (
|
||
|
|
// This works around a bug in Safari, where input[type=file]
|
||
|
|
// cannot be dynamically set after type has been removed
|
||
|
|
currentNode.nodeName === 'INPUT' && lcName === 'type' && value === 'file' && (ALLOWED_ATTR[lcName] || !FORBID_ATTR[lcName])) {
|
||
|
|
continue;
|
||
|
|
} else {
|
||
|
|
// This avoids a crash in Safari v9.0 with double-ids.
|
||
|
|
// The trick is to first set the id to be empty and then to
|
||
|
|
// remove the attribute
|
||
|
|
if (name === 'id') {
|
||
|
|
currentNode.setAttribute(name, '');
|
||
|
|
}
|
||
|
|
_removeAttribute(name, currentNode);
|
||
|
|
}
|
||
|
|
|
||
|
|
/* Did the hooks approve of the attribute? */
|
||
|
|
if (!hookEvent.keepAttr) {
|
||
|
|
continue;
|
||
|
|
}
|
||
|
|
|
||
|
|
/* Is `value` valid for this attribute? */
|
||
|
|
var lcTag = currentNode.nodeName.toLowerCase();
|
||
|
|
if (!_isValidAttribute(lcTag, lcName, value)) {
|
||
|
|
continue;
|
||
|
|
}
|
||
|
|
|
||
|
|
/* 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);
|
||
|
|
}
|
||
|
|
DOMPurify.removed.pop();
|
||
|
|
} catch (err) {}
|
||
|
|
}
|
||
|
|
|
||
|
|
/* Execute a hook if present */
|
||
|
|
_executeHook('afterSanitizeAttributes', currentNode, null);
|
||
|
|
};
|
||
|
|
|
||
|
|
/**
|
||
|
|
* _sanitizeShadowDOM
|
||
|
|
*
|
||
|
|
* @param {DocumentFragment} fragment to iterate over recursively
|
||
|
|
*/
|
||
|
|
var _sanitizeShadowDOM = function _sanitizeShadowDOM(fragment) {
|
||
|
|
var shadowNode = void 0;
|
||
|
|
var shadowIterator = _createIterator(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);
|
||
|
|
};
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Sanitize
|
||
|
|
* Public method providing core sanitation functionality
|
||
|
|
*
|
||
|
|
* @param {String|Node} dirty string or DOM node
|
||
|
|
* @param {Object} configuration object
|
||
|
|
*/
|
||
|
|
// eslint-disable-next-line complexity
|
||
|
|
DOMPurify.sanitize = function (dirty, cfg) {
|
||
|
|
var body = void 0;
|
||
|
|
var importedNode = void 0;
|
||
|
|
var currentNode = void 0;
|
||
|
|
var oldNode = void 0;
|
||
|
|
var returnNode = void 0;
|
||
|
|
/* 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 */
|
||
|
|
if (!dirty) {
|
||
|
|
dirty = '<!-->';
|
||
|
|
}
|
||
|
|
|
||
|
|
/* Stringify, in case dirty is an object */
|
||
|
|
if (typeof dirty !== 'string' && !_isNode(dirty)) {
|
||
|
|
// eslint-disable-next-line no-negated-condition
|
||
|
|
if (typeof dirty.toString !== 'function') {
|
||
|
|
throw new TypeError('toString is not a function');
|
||
|
|
} else {
|
||
|
|
dirty = dirty.toString();
|
||
|
|
if (typeof dirty !== 'string') {
|
||
|
|
throw new TypeError('dirty is not a string, aborting');
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
/* Check we can run. Otherwise fall back or ignore */
|
||
|
|
if (!DOMPurify.isSupported) {
|
||
|
|
if (_typeof(window.toStaticHTML) === 'object' || typeof window.toStaticHTML === 'function') {
|
||
|
|
if (typeof dirty === 'string') {
|
||
|
|
return window.toStaticHTML(dirty);
|
||
|
|
}
|
||
|
|
if (_isNode(dirty)) {
|
||
|
|
return window.toStaticHTML(dirty.outerHTML);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
return dirty;
|
||
|
|
}
|
||
|
|
|
||
|
|
/* Assign config vars */
|
||
|
|
if (!SET_CONFIG) {
|
||
|
|
_parseConfig(cfg);
|
||
|
|
}
|
||
|
|
|
||
|
|
/* Clean up removed elements */
|
||
|
|
DOMPurify.removed = [];
|
||
|
|
|
||
|
|
if (IN_PLACE) {
|
||
|
|
/* No special handling necessary for in-place sanitization */
|
||
|
|
} 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 === 1 && importedNode.nodeName === 'BODY') {
|
||
|
|
/* Node is already a body, use as is */
|
||
|
|
body = importedNode;
|
||
|
|
} else {
|
||
|
|
body.appendChild(importedNode);
|
||
|
|
}
|
||
|
|
} else {
|
||
|
|
/* Exit directly if we have nothing to do */
|
||
|
|
if (!RETURN_DOM && !WHOLE_DOCUMENT && dirty.indexOf('<') === -1) {
|
||
|
|
return trustedTypesPolicy ? 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 : emptyHTML;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
/* Remove first element node (ours) if FORCE_BODY is set */
|
||
|
|
if (body && FORCE_BODY) {
|
||
|
|
_forceRemove(body.firstChild);
|
||
|
|
}
|
||
|
|
|
||
|
|
/* Get node iterator */
|
||
|
|
var nodeIterator = _createIterator(IN_PLACE ? dirty : body);
|
||
|
|
|
||
|
|
/* Now start iterating over the created document */
|
||
|
|
while (currentNode = nodeIterator.nextNode()) {
|
||
|
|
/* Fix IE's strange behavior with manipulated textNodes #89 */
|
||
|
|
if (currentNode.nodeType === 3 && currentNode === oldNode) {
|
||
|
|
continue;
|
||
|
|
}
|
||
|
|
|
||
|
|
/* 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);
|
||
|
|
|
||
|
|
oldNode = currentNode;
|
||
|
|
}
|
||
|
|
|
||
|
|
oldNode = null;
|
||
|
|
|
||
|
|
/* If we sanitized `dirty` in-place, return it. */
|
||
|
|
if (IN_PLACE) {
|
||
|
|
return dirty;
|
||
|
|
}
|
||
|
|
|
||
|
|
/* Return sanitized string or DOM */
|
||
|
|
if (RETURN_DOM) {
|
||
|
|
if (RETURN_DOM_FRAGMENT) {
|
||
|
|
returnNode = createDocumentFragment.call(body.ownerDocument);
|
||
|
|
|
||
|
|
while (body.firstChild) {
|
||
|
|
returnNode.appendChild(body.firstChild);
|
||
|
|
}
|
||
|
|
} else {
|
||
|
|
returnNode = body;
|
||
|
|
}
|
||
|
|
|
||
|
|
if (RETURN_DOM_IMPORT) {
|
||
|
|
/* AdoptNode() is not used because internal state is not reset
|
||
|
|
(e.g. the past names map of a HTMLFormElement), this is safe
|
||
|
|
in theory but we would rather not risk another attack vector.
|
||
|
|
The state that is cloned by importNode() is explicitly defined
|
||
|
|
by the specs. */
|
||
|
|
returnNode = importNode.call(originalDocument, returnNode, true);
|
||
|
|
}
|
||
|
|
|
||
|
|
return returnNode;
|
||
|
|
}
|
||
|
|
|
||
|
|
var serializedHTML = WHOLE_DOCUMENT ? body.outerHTML : body.innerHTML;
|
||
|
|
return trustedTypesPolicy ? trustedTypesPolicy.createHTML(serializedHTML) : serializedHTML;
|
||
|
|
};
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Public method to set the configuration once
|
||
|
|
* setConfig
|
||
|
|
*
|
||
|
|
* @param {Object} cfg configuration object
|
||
|
|
*/
|
||
|
|
DOMPurify.setConfig = function (cfg) {
|
||
|
|
_parseConfig(cfg);
|
||
|
|
SET_CONFIG = true;
|
||
|
|
};
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Public method to remove the configuration
|
||
|
|
* clearConfig
|
||
|
|
*
|
||
|
|
*/
|
||
|
|
DOMPurify.clearConfig = function () {
|
||
|
|
CONFIG = null;
|
||
|
|
SET_CONFIG = false;
|
||
|
|
};
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Public method to check if an attribute value is valid.
|
||
|
|
* Uses last set config, if any. Otherwise, uses config defaults.
|
||
|
|
* isValidAttribute
|
||
|
|
*
|
||
|
|
* @param {string} tag Tag name of containing element.
|
||
|
|
* @param {string} attr Attribute name.
|
||
|
|
* @param {string} value Attribute value.
|
||
|
|
* @return {Boolean} Returns true if `value` is valid. Otherwise, returns false.
|
||
|
|
*/
|
||
|
|
DOMPurify.isValidAttribute = function (tag, attr, value) {
|
||
|
|
/* Initialize shared config vars if necessary. */
|
||
|
|
if (!CONFIG) {
|
||
|
|
_parseConfig({});
|
||
|
|
}
|
||
|
|
var lcTag = tag.toLowerCase();
|
||
|
|
var lcName = attr.toLowerCase();
|
||
|
|
return _isValidAttribute(lcTag, lcName, value);
|
||
|
|
};
|
||
|
|
|
||
|
|
/**
|
||
|
|
* AddHook
|
||
|
|
* Public method to add DOMPurify hooks
|
||
|
|
*
|
||
|
|
* @param {String} entryPoint entry point for the hook to add
|
||
|
|
* @param {Function} hookFunction function to execute
|
||
|
|
*/
|
||
|
|
DOMPurify.addHook = function (entryPoint, hookFunction) {
|
||
|
|
if (typeof hookFunction !== 'function') {
|
||
|
|
return;
|
||
|
|
}
|
||
|
|
hooks[entryPoint] = hooks[entryPoint] || [];
|
||
|
|
hooks[entryPoint].push(hookFunction);
|
||
|
|
};
|
||
|
|
|
||
|
|
/**
|
||
|
|
* RemoveHook
|
||
|
|
* Public method to remove a DOMPurify hook at a given entryPoint
|
||
|
|
* (pops it from the stack of hooks if more are present)
|
||
|
|
*
|
||
|
|
* @param {String} entryPoint entry point for the hook to remove
|
||
|
|
*/
|
||
|
|
DOMPurify.removeHook = function (entryPoint) {
|
||
|
|
if (hooks[entryPoint]) {
|
||
|
|
hooks[entryPoint].pop();
|
||
|
|
}
|
||
|
|
};
|
||
|
|
|
||
|
|
/**
|
||
|
|
* RemoveHooks
|
||
|
|
* Public method to remove all DOMPurify hooks at a given entryPoint
|
||
|
|
*
|
||
|
|
* @param {String} entryPoint entry point for the hooks to remove
|
||
|
|
*/
|
||
|
|
DOMPurify.removeHooks = function (entryPoint) {
|
||
|
|
if (hooks[entryPoint]) {
|
||
|
|
hooks[entryPoint] = [];
|
||
|
|
}
|
||
|
|
};
|
||
|
|
|
||
|
|
/**
|
||
|
|
* RemoveAllHooks
|
||
|
|
* Public method to remove all DOMPurify hooks
|
||
|
|
*
|
||
|
|
*/
|
||
|
|
DOMPurify.removeAllHooks = function () {
|
||
|
|
hooks = {};
|
||
|
|
};
|
||
|
|
|
||
|
|
return DOMPurify;
|
||
|
|
}
|
||
|
|
|
||
|
|
var purify = createDOMPurify();
|
||
|
|
|
||
|
|
return purify;
|
||
|
|
|
||
|
|
})));
|
||
|
|
//# sourceMappingURL=purify.js.map
|