2022-05-13 08:07:23 +02:00
|
|
|
/*!
|
2023-05-30 17:15:55 +02:00
|
|
|
* Bootstrap sanitizer.js v5.3.0 (https://getbootstrap.com/)
|
2023-03-24 15:30:16 +01:00
|
|
|
* Copyright 2011-2023 The Bootstrap Authors (https://github.com/twbs/bootstrap/graphs/contributors)
|
2022-05-13 08:07:23 +02:00
|
|
|
* Licensed under MIT (https://github.com/twbs/bootstrap/blob/main/LICENSE)
|
|
|
|
*/
|
|
|
|
(function (global, factory) {
|
|
|
|
typeof exports === 'object' && typeof module !== 'undefined' ? factory(exports) :
|
|
|
|
typeof define === 'function' && define.amd ? define(['exports'], factory) :
|
|
|
|
(global = typeof globalThis !== 'undefined' ? globalThis : global || self, factory(global.Sanitizer = {}));
|
|
|
|
})(this, (function (exports) { 'use strict';
|
|
|
|
|
|
|
|
/**
|
|
|
|
* --------------------------------------------------------------------------
|
2023-03-24 15:30:16 +01:00
|
|
|
* Bootstrap util/sanitizer.js
|
2022-05-13 08:07:23 +02:00
|
|
|
* Licensed under MIT (https://github.com/twbs/bootstrap/blob/main/LICENSE)
|
|
|
|
* --------------------------------------------------------------------------
|
|
|
|
*/
|
2022-12-24 17:37:22 +01:00
|
|
|
|
2023-04-03 09:26:50 +02:00
|
|
|
// js-docs-start allow-list
|
|
|
|
const ARIA_ATTRIBUTE_PATTERN = /^aria-[\w-]*$/i;
|
2022-05-13 08:07:23 +02:00
|
|
|
const DefaultAllowlist = {
|
|
|
|
// Global attributes allowed on any supplied element below.
|
|
|
|
'*': ['class', 'dir', 'id', 'lang', 'role', ARIA_ATTRIBUTE_PATTERN],
|
|
|
|
a: ['target', 'href', 'title', 'rel'],
|
|
|
|
area: [],
|
|
|
|
b: [],
|
|
|
|
br: [],
|
|
|
|
col: [],
|
|
|
|
code: [],
|
|
|
|
div: [],
|
|
|
|
em: [],
|
|
|
|
hr: [],
|
|
|
|
h1: [],
|
|
|
|
h2: [],
|
|
|
|
h3: [],
|
|
|
|
h4: [],
|
|
|
|
h5: [],
|
|
|
|
h6: [],
|
|
|
|
i: [],
|
|
|
|
img: ['src', 'srcset', 'alt', 'title', 'width', 'height'],
|
|
|
|
li: [],
|
|
|
|
ol: [],
|
|
|
|
p: [],
|
|
|
|
pre: [],
|
|
|
|
s: [],
|
|
|
|
small: [],
|
|
|
|
span: [],
|
|
|
|
sub: [],
|
|
|
|
sup: [],
|
|
|
|
strong: [],
|
|
|
|
u: [],
|
|
|
|
ul: []
|
|
|
|
};
|
2023-04-03 09:26:50 +02:00
|
|
|
// js-docs-end allow-list
|
|
|
|
|
2023-05-30 17:15:55 +02:00
|
|
|
const uriAttributes = new Set(['background', 'cite', 'href', 'itemtype', 'longdesc', 'poster', 'src', 'xlink:href']);
|
|
|
|
|
|
|
|
/**
|
|
|
|
* A pattern that recognizes URLs that are safe wrt. XSS in URL navigation
|
|
|
|
* contexts.
|
|
|
|
*
|
|
|
|
* Shout-out to Angular https://github.com/angular/angular/blob/15.2.8/packages/core/src/sanitization/url_sanitizer.ts#L38
|
|
|
|
*/
|
|
|
|
// eslint-disable-next-line unicorn/better-regex
|
|
|
|
const SAFE_URL_PATTERN = /^(?!javascript:)(?:[a-z0-9+.-]+:|[^&:/?#]*(?:[/?#]|$))/i;
|
|
|
|
const allowedAttribute = (attribute, allowedAttributeList) => {
|
|
|
|
const attributeName = attribute.nodeName.toLowerCase();
|
|
|
|
if (allowedAttributeList.includes(attributeName)) {
|
|
|
|
if (uriAttributes.has(attributeName)) {
|
|
|
|
return Boolean(SAFE_URL_PATTERN.test(attribute.nodeValue));
|
|
|
|
}
|
|
|
|
return true;
|
|
|
|
}
|
|
|
|
|
|
|
|
// Check if a regular expression validates the attribute.
|
|
|
|
return allowedAttributeList.filter(attributeRegex => attributeRegex instanceof RegExp).some(regex => regex.test(attributeName));
|
|
|
|
};
|
2022-05-13 08:07:23 +02:00
|
|
|
function sanitizeHtml(unsafeHtml, allowList, sanitizeFunction) {
|
|
|
|
if (!unsafeHtml.length) {
|
|
|
|
return unsafeHtml;
|
|
|
|
}
|
|
|
|
if (sanitizeFunction && typeof sanitizeFunction === 'function') {
|
|
|
|
return sanitizeFunction(unsafeHtml);
|
|
|
|
}
|
|
|
|
const domParser = new window.DOMParser();
|
|
|
|
const createdDocument = domParser.parseFromString(unsafeHtml, 'text/html');
|
|
|
|
const elements = [].concat(...createdDocument.body.querySelectorAll('*'));
|
|
|
|
for (const element of elements) {
|
|
|
|
const elementName = element.nodeName.toLowerCase();
|
|
|
|
if (!Object.keys(allowList).includes(elementName)) {
|
|
|
|
element.remove();
|
|
|
|
continue;
|
|
|
|
}
|
|
|
|
const attributeList = [].concat(...element.attributes);
|
|
|
|
const allowedAttributes = [].concat(allowList['*'] || [], allowList[elementName] || []);
|
|
|
|
for (const attribute of attributeList) {
|
|
|
|
if (!allowedAttribute(attribute, allowedAttributes)) {
|
|
|
|
element.removeAttribute(attribute.nodeName);
|
|
|
|
}
|
|
|
|
}
|
|
|
|
}
|
|
|
|
return createdDocument.body.innerHTML;
|
|
|
|
}
|
|
|
|
|
|
|
|
exports.DefaultAllowlist = DefaultAllowlist;
|
|
|
|
exports.sanitizeHtml = sanitizeHtml;
|
|
|
|
|
2022-12-24 17:37:22 +01:00
|
|
|
Object.defineProperty(exports, Symbol.toStringTag, { value: 'Module' });
|
2022-05-13 08:07:23 +02:00
|
|
|
|
|
|
|
}));
|
|
|
|
//# sourceMappingURL=sanitizer.js.map
|