@samitouri / QOSami_Agents_Zero / commits / c2e14b6c

sanitize plugin markdown rendering with shared helper

Add a shared safe markdown pipeline for plugin READMEs and docs. - vendor DOMPurify and introduce a shared safe-markdown helper - centralize GitHub README link/image rebasing, including repo routes like `releases` - sanitize rendered HTML before all plugin-related x-html sinks - apply the shared renderer to Plugin Hub README, installed plugin README, and markdown modal docs - preserve target/rel handling for external links

Alessandro committed Mar 28, 2026 at 19:29 UTC c2e14b6cd1f887d4cfec28bcb96e76a5a0a78850
7 files changed +1617 -119
plugins/_plugin_installer/webui/pluginInstallStore.js
+5 -89
@@ -1,8 +1,7 @@
1 import { createStore } from "/js/AlpineStore.js";
2 import * as api from "/js/api.js";
3 -import { addBlankTargetsToLinks } from "/js/messages.js";
3 import { openModal } from "/js/modals.js";
5 -import { marked } from "/vendor/marked/marked.esm.js";
4 +import { renderSafeMarkdown } from "/js/safe-markdown.js";
5 import { toastFrontendSuccess, toastFrontendError } from "/components/notifications/notification-store.js";
6 import { showConfirmDialog } from "/js/confirmDialog.js";
7 import { store as imageViewerStore } from "/components/modals/image-viewer/image-viewer-store.js";
@@ -80,90 +79,6 @@ const model = {
79 return url.replace("https://github.com/", "https://raw.githubusercontent.com/");
80 },
81
83 - _rebaseReadmeLinks(html, githubUrl, branch) {
84 - if (!html || typeof html !== "string" || !githubUrl || !branch) return html;
85 -
86 - let repoUrl;
87 - try {
88 - repoUrl = new URL(githubUrl.trim().replace(/\.git$/i, ""));
89 - } catch {
90 - return html;
91 - }
92 -
93 - if (repoUrl.hostname !== "github.com") return html;
94 -
95 - const [owner, repo] = repoUrl.pathname
96 - .replace(/^\/+|\/+$/g, "")
97 - .split("/");
98 - if (!owner || !repo) return html;
99 -
100 - const repoWebBase = `https://github.com/${owner}/${repo}`;
101 - const repoBlobBase = `${repoWebBase}/blob/${branch}`;
102 - const repoRawBase = `https://raw.githubusercontent.com/${owner}/${repo}/${branch}`;
103 - const doc = new DOMParser().parseFromString(html, "text/html");
104 - const githubRepoRoutePrefixes = new Set([
105 - "actions",
106 - "blob",
107 - "branches",
108 - "commit",
109 - "commits",
110 - "compare",
111 - "discussions",
112 - "issues",
113 - "labels",
114 - "milestones",
115 - "packages",
116 - "projects",
117 - "pulls",
118 - "raw",
119 - "releases",
120 - "security",
121 - "tags",
122 - "tree",
123 - "wiki",
124 - ]);
125 - const shouldSkipRebase = (value) =>
126 - !value ||
127 - value.startsWith("#") ||
128 - value.startsWith("//") ||
129 - /^[a-zA-Z][a-zA-Z\d+.-]*:/.test(value);
130 -
131 - const resolveRepoPath = (value) => {
132 - if (shouldSkipRebase(value)) return null;
133 - try {
134 - const resolved = new URL(value, "https://repo-root.invalid/");
135 - return `${resolved.pathname.replace(/^\/+/, "")}${resolved.search}${resolved.hash}`;
136 - } catch {
137 - return null;
138 - }
139 - };
140 - const isRepoRoutePath = (repoPath) => {
141 - const pathOnly = repoPath
142 - .split(/[?#]/, 1)[0]
143 - .replace(/^\/+|\/+$/g, "");
144 - if (!pathOnly) return false;
145 - const firstSegment = pathOnly.split("/")[0].toLowerCase();
146 - return githubRepoRoutePrefixes.has(firstSegment);
147 - };
148 -
149 - doc.querySelectorAll("a[href]").forEach((anchor) => {
150 - const href = (anchor.getAttribute("href") || "").trim();
151 - const repoPath = resolveRepoPath(href);
152 - if (!repoPath) return;
153 - const base = isRepoRoutePath(repoPath) ? repoWebBase : repoBlobBase;
154 - anchor.setAttribute("href", `${base}/${repoPath}`);
155 - });
156 -
157 - doc.querySelectorAll("img[src]").forEach((image) => {
158 - const src = (image.getAttribute("src") || "").trim();
159 - const repoPath = resolveRepoPath(src);
160 - if (!repoPath) return;
161 - image.setAttribute("src", `${repoRawBase}/${repoPath}`);
162 - });
163 -
164 - return doc.body.innerHTML;
165 - },
166 -
82 _pluginPrimaryTag(plugin) {
83 const tags = Array.isArray(plugin?.tags) ? plugin.tags.filter(Boolean) : [];
84 return tags[0] || "";
@@ -589,9 +504,10 @@ const model = {
504 if (!response.ok) continue;
505
506 const readme = await response.text();
592 - let html = marked.parse(readme, { breaks: true });
593 - html = this._rebaseReadmeLinks(html, plugin?.github, branch);
594 - this.readmeContent = addBlankTargetsToLinks(html);
507 + this.readmeContent = renderSafeMarkdown(readme, {
508 + githubUrl: plugin?.github,
509 + branch,
510 + });
511 return;
512 } catch (error) {
513 lastError = error;
webui/components/modals/markdown/markdown-store.js
+2 -2
@@ -1,5 +1,5 @@
1 -import { marked } from "/vendor/marked/marked.esm.js";
1 import { createStore } from "/js/AlpineStore.js";
2 +import { renderSafeMarkdown } from "/js/safe-markdown.js";
3
4 export const store = createStore("markdownModal", {
5 title: "",
@@ -14,7 +14,7 @@ export const store = createStore("markdownModal", {
14
15 get renderedHtml() {
16 if (!this.content) return "";
17 - return marked.parse(this.content, { breaks: true });
17 + return renderSafeMarkdown(this.content);
18 },
19
20 cleanup() {
webui/components/plugins/list/pluginListStore.js
+2 -4
@@ -1,7 +1,6 @@
1 import { createStore } from "/js/AlpineStore.js";
2 import * as api from "/js/api.js";
3 -import { marked } from "/vendor/marked/marked.esm.js";
4 -import { addBlankTargetsToLinks } from "/js/messages.js";
3 +import { renderSafeMarkdown } from "/js/safe-markdown.js";
4 import { store as pluginSettingsStore } from "/components/plugins/plugin-settings-store.js";
5 import { store as pluginToggleStore } from "/components/plugins/toggle/plugin-toggle-store.js";
6 import { store as pluginExecuteStore } from "/components/plugins/list/plugin-execute-store.js";
@@ -167,8 +166,7 @@ const model = {
166 doc: "readme",
167 });
168 if (response?.error) throw new Error(response.error);
170 - const html = marked.parse(response.content || "", { breaks: true });
171 - this.readmeContent = addBlankTargetsToLinks(html);
169 + this.readmeContent = renderSafeMarkdown(response.content || "");
170 } catch (e) {
171 const error = e instanceof Error ? e : new Error(String(e));
172 this.readmeError = error.message || "Failed to load README";
webui/js/html-links.js new
+27
@@ -0,0 +1,27 @@
1 +export function addBlankTargetsToLinks(str) {
2 + const doc = new DOMParser().parseFromString(str, "text/html");
3 +
4 + doc.querySelectorAll("a").forEach((anchor) => {
5 + const href = anchor.getAttribute("href") || "";
6 + if (
7 + href.startsWith("#") ||
8 + href.trim().toLowerCase().startsWith("javascript")
9 + ) {
10 + return;
11 + }
12 +
13 + if (
14 + !anchor.hasAttribute("target") ||
15 + anchor.getAttribute("target") === ""
16 + ) {
17 + anchor.setAttribute("target", "_blank");
18 + }
19 +
20 + const rel = (anchor.getAttribute("rel") || "").split(/\s+/).filter(Boolean);
21 + if (!rel.includes("noopener")) rel.push("noopener");
22 + if (!rel.includes("noreferrer")) rel.push("noreferrer");
23 + anchor.setAttribute("rel", rel.join(" "));
24 + });
25 +
26 + return doc.body.innerHTML;
27 +}
webui/js/messages.js
+2 -24
@@ -13,6 +13,7 @@ import { store as preferencesStore } from "/components/sidebar/bottom/preference
13 import { formatDuration } from "./time-utils.js";
14 import { Scroller } from "./scroller.js";
15 import { callJsExtensions } from "/js/extensions.js";
16 +import { addBlankTargetsToLinks } from "/js/html-links.js";
17
18 // Delay before collapsing previous steps when a new step is added
19 const STEP_COLLAPSE_DELAY = {
@@ -762,30 +763,7 @@ export function _drawMessage({
763 return messageDiv;
764 }
765
765 -export function addBlankTargetsToLinks(str) {
766 - const doc = new DOMParser().parseFromString(str, "text/html");
767 -
768 - doc.querySelectorAll("a").forEach((anchor) => {
769 - const href = anchor.getAttribute("href") || "";
770 - if (
771 - href.startsWith("#") ||
772 - href.trim().toLowerCase().startsWith("javascript")
773 - )
774 - return;
775 - if (
776 - !anchor.hasAttribute("target") ||
777 - anchor.getAttribute("target") === ""
778 - ) {
779 - anchor.setAttribute("target", "_blank");
780 - }
781 -
782 - const rel = (anchor.getAttribute("rel") || "").split(/\s+/).filter(Boolean);
783 - if (!rel.includes("noopener")) rel.push("noopener");
784 - if (!rel.includes("noreferrer")) rel.push("noreferrer");
785 - anchor.setAttribute("rel", rel.join(" "));
786 - });
787 - return doc.body.innerHTML;
788 -}
766 +export { addBlankTargetsToLinks };
767
768 /**
769 * @param {MessageHandlerArgs & Record<string, any>} param0
webui/js/safe-markdown.js new
+182
@@ -0,0 +1,182 @@
1 +import DOMPurify from "/vendor/dompurify/purify.es.mjs";
2 +import { marked } from "/vendor/marked/marked.esm.js";
3 +import { addBlankTargetsToLinks } from "/js/html-links.js";
4 +
5 +const GITHUB_REPO_ROUTE_PREFIXES = new Set([
6 + "actions",
7 + "blob",
8 + "branches",
9 + "commit",
10 + "commits",
11 + "compare",
12 + "discussions",
13 + "issues",
14 + "labels",
15 + "milestones",
16 + "packages",
17 + "projects",
18 + "pulls",
19 + "raw",
20 + "releases",
21 + "security",
22 + "tags",
23 + "tree",
24 + "wiki",
25 +]);
26 +
27 +const DOMPURIFY_CONFIG = Object.freeze({
28 + USE_PROFILES: { html: true },
29 + FORBID_TAGS: ["script", "iframe", "object", "embed", "svg", "math"],
30 +});
31 +
32 +function parseGithubRepoContext(githubUrl) {
33 + if (!githubUrl || typeof githubUrl !== "string") return null;
34 +
35 + let repoUrl;
36 + try {
37 + repoUrl = new URL(githubUrl.trim().replace(/\.git$/i, ""));
38 + } catch {
39 + return null;
40 + }
41 +
42 + if (repoUrl.hostname !== "github.com") return null;
43 +
44 + const [owner, repo] = repoUrl.pathname
45 + .replace(/^\/+|\/+$/g, "")
46 + .split("/");
47 + if (!owner || !repo) return null;
48 +
49 + return { owner, repo };
50 +}
51 +
52 +function shouldSkipRebase(value) {
53 + return (
54 + !value ||
55 + value.startsWith("#") ||
56 + value.startsWith("//") ||
57 + /^[a-zA-Z][a-zA-Z\d+.-]*:/.test(value)
58 + );
59 +}
60 +
61 +function resolveRepoPath(value) {
62 + if (shouldSkipRebase(value)) return null;
63 + try {
64 + const resolved = new URL(value, "https://repo-root.invalid/");
65 + return `${resolved.pathname.replace(/^\/+/, "")}${resolved.search}${resolved.hash}`;
66 + } catch {
67 + return null;
68 + }
69 +}
70 +
71 +function isGithubRepoRoutePath(repoPath) {
72 + const pathOnly = repoPath
73 + .split(/[?#]/, 1)[0]
74 + .replace(/^\/+|\/+$/g, "");
75 + if (!pathOnly) return false;
76 + const firstSegment = pathOnly.split("/")[0].toLowerCase();
77 + return GITHUB_REPO_ROUTE_PREFIXES.has(firstSegment);
78 +}
79 +
80 +function isSafeUrlValue(value, attributeName) {
81 + const normalized = String(value || "").trim();
82 + if (!normalized) return true;
83 + if (
84 + normalized.startsWith("#") ||
85 + normalized.startsWith("/") ||
86 + normalized.startsWith("./") ||
87 + normalized.startsWith("../") ||
88 + normalized.startsWith("?")
89 + ) {
90 + return true;
91 + }
92 +
93 + try {
94 + const url = new URL(normalized, "https://sanitizer.invalid/");
95 + if (url.origin === "https://sanitizer.invalid") {
96 + return true;
97 + }
98 +
99 + const protocol = url.protocol.toLowerCase();
100 + if (protocol === "http:" || protocol === "https:") return true;
101 + if (attributeName === "href" && (protocol === "mailto:" || protocol === "tel:")) {
102 + return true;
103 + }
104 + } catch {
105 + return false;
106 + }
107 +
108 + return false;
109 +}
110 +
111 +function stripUnsafeUrlAttributes(html) {
112 + const doc = new DOMParser().parseFromString(html, "text/html");
113 +
114 + doc.querySelectorAll("[href], [src]").forEach((element) => {
115 + for (const attributeName of ["href", "src"]) {
116 + if (!element.hasAttribute(attributeName)) continue;
117 + const value = element.getAttribute(attributeName) || "";
118 + if (!isSafeUrlValue(value, attributeName)) {
119 + element.removeAttribute(attributeName);
120 + }
121 + }
122 + });
123 +
124 + return doc.body.innerHTML;
125 +}
126 +
127 +export function sanitizeHtml(html) {
128 + if (!html || typeof html !== "string") return "";
129 + const sanitized = DOMPurify.sanitize(html, DOMPURIFY_CONFIG);
130 + return stripUnsafeUrlAttributes(sanitized);
131 +}
132 +
133 +export function rebaseGithubReadmeHtml(html, githubUrl, branch) {
134 + if (!html || typeof html !== "string" || !branch) return html;
135 +
136 + const repoContext = parseGithubRepoContext(githubUrl);
137 + if (!repoContext) return html;
138 +
139 + const { owner, repo } = repoContext;
140 + const repoWebBase = `https://github.com/${owner}/${repo}`;
141 + const repoBlobBase = `${repoWebBase}/blob/${branch}`;
142 + const repoRawBase = `https://raw.githubusercontent.com/${owner}/${repo}/${branch}`;
143 + const doc = new DOMParser().parseFromString(html, "text/html");
144 +
145 + // Single-segment links like "releases" are ambiguous, so README rebasing
146 + // needs an explicit GitHub repo-route allowlist instead of a single base URL.
147 + doc.querySelectorAll("a[href]").forEach((anchor) => {
148 + const href = (anchor.getAttribute("href") || "").trim();
149 + const repoPath = resolveRepoPath(href);
150 + if (!repoPath) return;
151 + const base = isGithubRepoRoutePath(repoPath) ? repoWebBase : repoBlobBase;
152 + anchor.setAttribute("href", `${base}/${repoPath}`);
153 + });
154 +
155 + doc.querySelectorAll("img[src]").forEach((image) => {
156 + const src = (image.getAttribute("src") || "").trim();
157 + const repoPath = resolveRepoPath(src);
158 + if (!repoPath) return;
159 + image.setAttribute("src", `${repoRawBase}/${repoPath}`);
160 + });
161 +
162 + return doc.body.innerHTML;
163 +}
164 +
165 +export function renderSafeMarkdown(markdown, options = {}) {
166 + if (!markdown) return "";
167 +
168 + const { githubUrl = "", branch = "", openExternalLinksInNewTab = true } = options;
169 +
170 + let html = marked.parse(markdown, { breaks: true });
171 + if (githubUrl && branch) {
172 + html = rebaseGithubReadmeHtml(html, githubUrl, branch);
173 + }
174 +
175 + html = sanitizeHtml(html);
176 +
177 + if (openExternalLinksInNewTab) {
178 + html = addBlankTargetsToLinks(html);
179 + }
180 +
181 + return html;
182 +}
webui/vendor/dompurify/purify.es.mjs new
+1397
@@ -0,0 +1,1397 @@
1 +/*! @license DOMPurify 3.3.3 | (c) Cure53 and other contributors | Released under the Apache license 2.0 and Mozilla Public License 2.0 | github.com/cure53/DOMPurify/blob/3.3.3/LICENSE */
2 +
3 +const {
4 + entries,
5 + setPrototypeOf,
6 + isFrozen,
7 + getPrototypeOf,
8 + getOwnPropertyDescriptor
9 +} = Object;
10 +let {
11 + freeze,
12 + seal,
13 + create
14 +} = Object; // eslint-disable-line import/no-mutable-exports
15 +let {
16 + apply,
17 + construct
18 +} = typeof Reflect !== 'undefined' && Reflect;
19 +if (!freeze) {
20 + freeze = function freeze(x) {
21 + return x;
22 + };
23 +}
24 +if (!seal) {
25 + seal = function seal(x) {
26 + return x;
27 + };
28 +}
29 +if (!apply) {
30 + apply = function apply(func, thisArg) {
31 + for (var _len = arguments.length, args = new Array(_len > 2 ? _len - 2 : 0), _key = 2; _key < _len; _key++) {
32 + args[_key - 2] = arguments[_key];
33 + }
34 + return func.apply(thisArg, args);
35 + };
36 +}
37 +if (!construct) {
38 + construct = function construct(Func) {
39 + for (var _len2 = arguments.length, args = new Array(_len2 > 1 ? _len2 - 1 : 0), _key2 = 1; _key2 < _len2; _key2++) {
40 + args[_key2 - 1] = arguments[_key2];
41 + }
42 + return new Func(...args);
43 + };
44 +}
45 +const arrayForEach = unapply(Array.prototype.forEach);
46 +const arrayLastIndexOf = unapply(Array.prototype.lastIndexOf);
47 +const arrayPop = unapply(Array.prototype.pop);
48 +const arrayPush = unapply(Array.prototype.push);
49 +const arraySplice = unapply(Array.prototype.splice);
50 +const stringToLowerCase = unapply(String.prototype.toLowerCase);
51 +const stringToString = unapply(String.prototype.toString);
52 +const stringMatch = unapply(String.prototype.match);
53 +const stringReplace = unapply(String.prototype.replace);
54 +const stringIndexOf = unapply(String.prototype.indexOf);
55 +const stringTrim = unapply(String.prototype.trim);
56 +const objectHasOwnProperty = unapply(Object.prototype.hasOwnProperty);
57 +const regExpTest = unapply(RegExp.prototype.test);
58 +const typeErrorCreate = unconstruct(TypeError);
59 +/**
60 + * Creates a new function that calls the given function with a specified thisArg and arguments.
61 + *
62 + * @param func - The function to be wrapped and called.
63 + * @returns A new function that calls the given function with a specified thisArg and arguments.
64 + */
65 +function unapply(func) {
66 + return function (thisArg) {
67 + if (thisArg instanceof RegExp) {
68 + thisArg.lastIndex = 0;
69 + }
70 + for (var _len3 = arguments.length, args = new Array(_len3 > 1 ? _len3 - 1 : 0), _key3 = 1; _key3 < _len3; _key3++) {
71 + args[_key3 - 1] = arguments[_key3];
72 + }
73 + return apply(func, thisArg, args);
74 + };
75 +}
76 +/**
77 + * Creates a new function that constructs an instance of the given constructor function with the provided arguments.
78 + *
79 + * @param func - The constructor function to be wrapped and called.
80 + * @returns A new function that constructs an instance of the given constructor function with the provided arguments.
81 + */
82 +function unconstruct(Func) {
83 + return function () {
84 + for (var _len4 = arguments.length, args = new Array(_len4), _key4 = 0; _key4 < _len4; _key4++) {
85 + args[_key4] = arguments[_key4];
86 + }
87 + return construct(Func, args);
88 + };
89 +}
90 +/**
91 + * Add properties to a lookup table
92 + *
93 + * @param set - The set to which elements will be added.
94 + * @param array - The array containing elements to be added to the set.
95 + * @param transformCaseFunc - An optional function to transform the case of each element before adding to the set.
96 + * @returns The modified set with added elements.
97 + */
98 +function addToSet(set, array) {
99 + let transformCaseFunc = arguments.length > 2 && arguments[2] !== undefined ? arguments[2] : stringToLowerCase;
100 + if (setPrototypeOf) {
101 + // Make 'in' and truthy checks like Boolean(set.constructor)
102 + // independent of any properties defined on Object.prototype.
103 + // Prevent prototype setters from intercepting set as a this value.
104 + setPrototypeOf(set, null);
105 + }
106 + let l = array.length;
107 + while (l--) {
108 + let element = array[l];
109 + if (typeof element === 'string') {
110 + const lcElement = transformCaseFunc(element);
111 + if (lcElement !== element) {
112 + // Config presets (e.g. tags.js, attrs.js) are immutable.
113 + if (!isFrozen(array)) {
114 + array[l] = lcElement;
115 + }
116 + element = lcElement;
117 + }
118 + }
119 + set[element] = true;
120 + }
121 + return set;
122 +}
123 +/**
124 + * Clean up an array to harden against CSPP
125 + *
126 + * @param array - The array to be cleaned.
127 + * @returns The cleaned version of the array
128 + */
129 +function cleanArray(array) {
130 + for (let index = 0; index < array.length; index++) {
131 + const isPropertyExist = objectHasOwnProperty(array, index);
132 + if (!isPropertyExist) {
133 + array[index] = null;
134 + }
135 + }
136 + return array;
137 +}
138 +/**
139 + * Shallow clone an object
140 + *
141 + * @param object - The object to be cloned.
142 + * @returns A new object that copies the original.
143 + */
144 +function clone(object) {
145 + const newObject = create(null);
146 + for (const [property, value] of entries(object)) {
147 + const isPropertyExist = objectHasOwnProperty(object, property);
148 + if (isPropertyExist) {
149 + if (Array.isArray(value)) {
150 + newObject[property] = cleanArray(value);
151 + } else if (value && typeof value === 'object' && value.constructor === Object) {
152 + newObject[property] = clone(value);
153 + } else {
154 + newObject[property] = value;
155 + }
156 + }
157 + }
158 + return newObject;
159 +}
160 +/**
161 + * This method automatically checks if the prop is function or getter and behaves accordingly.
162 + *
163 + * @param object - The object to look up the getter function in its prototype chain.
164 + * @param prop - The property name for which to find the getter function.
165 + * @returns The getter function found in the prototype chain or a fallback function.
166 + */
167 +function lookupGetter(object, prop) {
168 + while (object !== null) {
169 + const desc = getOwnPropertyDescriptor(object, prop);
170 + if (desc) {
171 + if (desc.get) {
172 + return unapply(desc.get);
173 + }
174 + if (typeof desc.value === 'function') {
175 + return unapply(desc.value);
176 + }
177 + }
178 + object = getPrototypeOf(object);
179 + }
180 + function fallbackValue() {
181 + return null;
182 + }
183 + return fallbackValue;
184 +}
185 +
186 +const html$1 = freeze(['a', 'abbr', 'acronym', 'address', 'area', 'article', 'aside', 'audio', 'b', 'bdi', 'bdo', 'big', 'blink', 'blockquote', 'body', 'br', 'button', 'canvas', 'caption', 'center', 'cite', 'code', 'col', 'colgroup', 'content', 'data', 'datalist', 'dd', 'decorator', 'del', 'details', 'dfn', 'dialog', 'dir', 'div', 'dl', 'dt', 'element', 'em', 'fieldset', 'figcaption', 'figure', 'font', 'footer', 'form', 'h1', 'h2', 'h3', 'h4', 'h5', 'h6', 'head', 'header', 'hgroup', 'hr', 'html', 'i', 'img', 'input', 'ins', 'kbd', 'label', 'legend', 'li', 'main', 'map', 'mark', 'marquee', 'menu', 'menuitem', 'meter', 'nav', 'nobr', 'ol', 'optgroup', 'option', 'output', 'p', 'picture', 'pre', 'progress', 'q', 'rp', 'rt', 'ruby', 's', 'samp', 'search', 'section', 'select', 'shadow', 'slot', 'small', 'source', 'spacer', 'span', 'strike', 'strong', 'style', 'sub', 'summary', 'sup', 'table', 'tbody', 'td', 'template', 'textarea', 'tfoot', 'th', 'thead', 'time', 'tr', 'track', 'tt', 'u', 'ul', 'var', 'video', 'wbr']);
187 +const svg$1 = freeze(['svg', 'a', 'altglyph', 'altglyphdef', 'altglyphitem', 'animatecolor', 'animatemotion', 'animatetransform', 'circle', 'clippath', 'defs', 'desc', 'ellipse', 'enterkeyhint', 'exportparts', 'filter', 'font', 'g', 'glyph', 'glyphref', 'hkern', 'image', 'inputmode', 'line', 'lineargradient', 'marker', 'mask', 'metadata', 'mpath', 'part', 'path', 'pattern', 'polygon', 'polyline', 'radialgradient', 'rect', 'stop', 'style', 'switch', 'symbol', 'text', 'textpath', 'title', 'tref', 'tspan', 'view', 'vkern']);
188 +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']);
189 +// List of SVG elements that are disallowed by default.
190 +// We still need to know them so that we can do namespace
191 +// checks properly in case one wants to add them to
192 +// allow-list.
193 +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']);
194 +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']);
195 +// Similarly to SVG, we want to know all MathML elements,
196 +// even those that we disallow by default.
197 +const mathMlDisallowed = freeze(['maction', 'maligngroup', 'malignmark', 'mlongdiv', 'mscarries', 'mscarry', 'msgroup', 'mstack', 'msline', 'msrow', 'semantics', 'annotation', 'annotation-xml', 'mprescripts', 'none']);
198 +const text = freeze(['#text']);
199 +
200 +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', 'exportparts', 'face', 'for', 'headers', 'height', 'hidden', 'high', 'href', 'hreflang', 'id', 'inert', 'inputmode', 'integrity', 'ismap', 'kind', 'label', 'lang', 'list', 'loading', 'loop', 'low', 'max', 'maxlength', 'media', 'method', 'min', 'minlength', 'multiple', 'muted', 'name', 'nonce', 'noshade', 'novalidate', 'nowrap', 'open', 'optimum', 'part', 'pattern', 'placeholder', 'playsinline', 'popover', 'popovertarget', 'popovertargetaction', 'poster', 'preload', 'pubdate', 'radiogroup', 'readonly', 'rel', 'required', 'rev', 'reversed', 'role', 'rows', 'rowspan', 'spellcheck', 'scope', 'selected', 'shape', 'size', 'sizes', 'slot', 'span', 'srclang', 'start', 'src', 'srcset', 'step', 'style', 'summary', 'tabindex', 'title', 'translate', 'type', 'usemap', 'valign', 'value', 'width', 'wrap', 'xmlns', 'slot']);
201 +const svg = freeze(['accent-height', 'accumulate', 'additive', 'alignment-baseline', 'amplitude', 'ascent', 'attributename', 'attributetype', 'azimuth', 'basefrequency', 'baseline-shift', 'begin', 'bias', 'by', 'class', 'clip', 'clippathunits', 'clip-path', 'clip-rule', 'color', 'color-interpolation', 'color-interpolation-filters', 'color-profile', 'color-rendering', 'cx', 'cy', 'd', 'dx', 'dy', 'diffuseconstant', 'direction', 'display', 'divisor', 'dur', 'edgemode', 'elevation', 'end', 'exponent', 'fill', 'fill-opacity', 'fill-rule', 'filter', 'filterunits', 'flood-color', 'flood-opacity', 'font-family', 'font-size', 'font-size-adjust', 'font-stretch', 'font-style', 'font-variant', 'font-weight', 'fx', 'fy', 'g1', 'g2', 'glyph-name', 'glyphref', 'gradientunits', 'gradienttransform', 'height', 'href', 'id', 'image-rendering', 'in', 'in2', 'intercept', 'k', 'k1', 'k2', 'k3', 'k4', 'kerning', 'keypoints', 'keysplines', 'keytimes', 'lang', 'lengthadjust', 'letter-spacing', 'kernelmatrix', 'kernelunitlength', 'lighting-color', 'local', 'marker-end', 'marker-mid', 'marker-start', 'markerheight', 'markerunits', 'markerwidth', 'maskcontentunits', 'maskunits', 'max', 'mask', 'mask-type', 'media', 'method', 'mode', 'min', 'name', 'numoctaves', 'offset', 'operator', 'opacity', 'order', 'orient', 'orientation', 'origin', 'overflow', 'paint-order', 'path', 'pathlength', 'patterncontentunits', 'patterntransform', 'patternunits', 'points', 'preservealpha', 'preserveaspectratio', 'primitiveunits', 'r', 'rx', 'ry', 'radius', 'refx', 'refy', 'repeatcount', 'repeatdur', 'restart', 'result', 'rotate', 'scale', 'seed', 'shape-rendering', 'slope', 'specularconstant', 'specularexponent', 'spreadmethod', 'startoffset', 'stddeviation', 'stitchtiles', 'stop-color', 'stop-opacity', 'stroke-dasharray', 'stroke-dashoffset', 'stroke-linecap', 'stroke-linejoin', 'stroke-miterlimit', 'stroke-opacity', 'stroke', 'stroke-width', 'style', 'surfacescale', 'systemlanguage', 'tabindex', 'tablevalues', 'targetx', 'targety', 'transform', 'transform-origin', 'text-anchor', 'text-decoration', 'text-rendering', 'textlength', 'type', 'u1', 'u2', 'unicode', 'values', 'viewbox', 'visibility', 'version', 'vert-adv-y', 'vert-origin-x', 'vert-origin-y', 'width', 'word-spacing', 'wrap', 'writing-mode', 'xchannelselector', 'ychannelselector', 'x', 'x1', 'x2', 'xmlns', 'y', 'y1', 'y2', 'z', 'zoomandpan']);
202 +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']);
203 +const xml = freeze(['xlink:href', 'xml:id', 'xlink:title', 'xml:space', 'xmlns:xlink']);
204 +
205 +// eslint-disable-next-line unicorn/better-regex
206 +const MUSTACHE_EXPR = seal(/\{\{[\w\W]*|[\w\W]*\}\}/gm); // Specify template detection regex for SAFE_FOR_TEMPLATES mode
207 +const ERB_EXPR = seal(/<%[\w\W]*|[\w\W]*%>/gm);
208 +const TMPLIT_EXPR = seal(/\$\{[\w\W]*/gm); // eslint-disable-line unicorn/better-regex
209 +const DATA_ATTR = seal(/^data-[\-\w.\u00B7-\uFFFF]+$/); // eslint-disable-line no-useless-escape
210 +const ARIA_ATTR = seal(/^aria-[\-\w]+$/); // eslint-disable-line no-useless-escape
211 +const IS_ALLOWED_URI = seal(/^(?:(?:(?:f|ht)tps?|mailto|tel|callto|sms|cid|xmpp|matrix):|[^a-z]|[a-z+.\-]+(?:[^a-z+.\-:]|$))/i // eslint-disable-line no-useless-escape
212 +);
213 +const IS_SCRIPT_OR_DATA = seal(/^(?:\w+script|data):/i);
214 +const ATTR_WHITESPACE = seal(/[\u0000-\u0020\u00A0\u1680\u180E\u2000-\u2029\u205F\u3000]/g // eslint-disable-line no-control-regex
215 +);
216 +const DOCTYPE_NAME = seal(/^html$/i);
217 +const CUSTOM_ELEMENT = seal(/^[a-z][.\w]*(-[.\w]+)+$/i);
218 +
219 +var EXPRESSIONS = /*#__PURE__*/Object.freeze({
220 + __proto__: null,
221 + ARIA_ATTR: ARIA_ATTR,
222 + ATTR_WHITESPACE: ATTR_WHITESPACE,
223 + CUSTOM_ELEMENT: CUSTOM_ELEMENT,
224 + DATA_ATTR: DATA_ATTR,
225 + DOCTYPE_NAME: DOCTYPE_NAME,
226 + ERB_EXPR: ERB_EXPR,
227 + IS_ALLOWED_URI: IS_ALLOWED_URI,
228 + IS_SCRIPT_OR_DATA: IS_SCRIPT_OR_DATA,
229 + MUSTACHE_EXPR: MUSTACHE_EXPR,
230 + TMPLIT_EXPR: TMPLIT_EXPR
231 +});
232 +
233 +/* eslint-disable @typescript-eslint/indent */
234 +// https://developer.mozilla.org/en-US/docs/Web/API/Node/nodeType
235 +const NODE_TYPE = {
236 + element: 1,
237 + attribute: 2,
238 + text: 3,
239 + cdataSection: 4,
240 + entityReference: 5,
241 + // Deprecated
242 + entityNode: 6,
243 + // Deprecated
244 + progressingInstruction: 7,
245 + comment: 8,
246 + document: 9,
247 + documentType: 10,
248 + documentFragment: 11,
249 + notation: 12 // Deprecated
250 +};
251 +const getGlobal = function getGlobal() {
252 + return typeof window === 'undefined' ? null : window;
253 +};
254 +/**
255 + * Creates a no-op policy for internal use only.
256 + * Don't export this function outside this module!
257 + * @param trustedTypes The policy factory.
258 + * @param purifyHostElement The Script element used to load DOMPurify (to determine policy name suffix).
259 + * @return The policy created (or null, if Trusted Types
260 + * are not supported or creating the policy failed).
261 + */
262 +const _createTrustedTypesPolicy = function _createTrustedTypesPolicy(trustedTypes, purifyHostElement) {
263 + if (typeof trustedTypes !== 'object' || typeof trustedTypes.createPolicy !== 'function') {
264 + return null;
265 + }
266 + // Allow the callers to control the unique policy name
267 + // by adding a data-tt-policy-suffix to the script element with the DOMPurify.
268 + // Policy creation with duplicate names throws in Trusted Types.
269 + let suffix = null;
270 + const ATTR_NAME = 'data-tt-policy-suffix';
271 + if (purifyHostElement && purifyHostElement.hasAttribute(ATTR_NAME)) {
272 + suffix = purifyHostElement.getAttribute(ATTR_NAME);
273 + }
274 + const policyName = 'dompurify' + (suffix ? '#' + suffix : '');
275 + try {
276 + return trustedTypes.createPolicy(policyName, {
277 + createHTML(html) {
278 + return html;
279 + },
280 + createScriptURL(scriptUrl) {
281 + return scriptUrl;
282 + }
283 + });
284 + } catch (_) {
285 + // Policy creation failed (most likely another DOMPurify script has
286 + // already run). Skip creating the policy, as this will only cause errors
287 + // if TT are enforced.
288 + console.warn('TrustedTypes policy ' + policyName + ' could not be created.');
289 + return null;
290 + }
291 +};
292 +const _createHooksMap = function _createHooksMap() {
293 + return {
294 + afterSanitizeAttributes: [],
295 + afterSanitizeElements: [],
296 + afterSanitizeShadowDOM: [],
297 + beforeSanitizeAttributes: [],
298 + beforeSanitizeElements: [],
299 + beforeSanitizeShadowDOM: [],
300 + uponSanitizeAttribute: [],
301 + uponSanitizeElement: [],
302 + uponSanitizeShadowNode: []
303 + };
304 +};
305 +function createDOMPurify() {
306 + let window = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : getGlobal();
307 + const DOMPurify = root => createDOMPurify(root);
308 + DOMPurify.version = '3.3.3';
309 + DOMPurify.removed = [];
310 + if (!window || !window.document || window.document.nodeType !== NODE_TYPE.document || !window.Element) {
311 + // Not running in a browser, provide a factory function
312 + // so that you can pass your own Window
313 + DOMPurify.isSupported = false;
314 + return DOMPurify;
315 + }
316 + let {
317 + document
318 + } = window;
319 + const originalDocument = document;
320 + const currentScript = originalDocument.currentScript;
321 + const {
322 + DocumentFragment,
323 + HTMLTemplateElement,
324 + Node,
325 + Element,
326 + NodeFilter,
327 + NamedNodeMap = window.NamedNodeMap || window.MozNamedAttrMap,
328 + HTMLFormElement,
329 + DOMParser,
330 + trustedTypes
331 + } = window;
332 + const ElementPrototype = Element.prototype;
333 + const cloneNode = lookupGetter(ElementPrototype, 'cloneNode');
334 + const remove = lookupGetter(ElementPrototype, 'remove');
335 + const getNextSibling = lookupGetter(ElementPrototype, 'nextSibling');
336 + const getChildNodes = lookupGetter(ElementPrototype, 'childNodes');
337 + const getParentNode = lookupGetter(ElementPrototype, 'parentNode');
338 + // As per issue #47, the web-components registry is inherited by a
339 + // new document created via createHTMLDocument. As per the spec
340 + // (http://w3c.github.io/webcomponents/spec/custom/#creating-and-passing-registries)
341 + // a new empty registry is used when creating a template contents owner
342 + // document, so we use that as our parent document to ensure nothing
343 + // is inherited.
344 + if (typeof HTMLTemplateElement === 'function') {
345 + const template = document.createElement('template');
346 + if (template.content && template.content.ownerDocument) {
347 + document = template.content.ownerDocument;
348 + }
349 + }
350 + let trustedTypesPolicy;
351 + let emptyHTML = '';
352 + const {
353 + implementation,
354 + createNodeIterator,
355 + createDocumentFragment,
356 + getElementsByTagName
357 + } = document;
358 + const {
359 + importNode
360 + } = originalDocument;
361 + let hooks = _createHooksMap();
362 + /**
363 + * Expose whether this browser supports running the full DOMPurify.
364 + */
365 + DOMPurify.isSupported = typeof entries === 'function' && typeof getParentNode === 'function' && implementation && implementation.createHTMLDocument !== undefined;
366 + const {
367 + MUSTACHE_EXPR,
368 + ERB_EXPR,
369 + TMPLIT_EXPR,
370 + DATA_ATTR,
371 + ARIA_ATTR,
372 + IS_SCRIPT_OR_DATA,
373 + ATTR_WHITESPACE,
374 + CUSTOM_ELEMENT
375 + } = EXPRESSIONS;
376 + let {
377 + IS_ALLOWED_URI: IS_ALLOWED_URI$1
378 + } = EXPRESSIONS;
379 + /**
380 + * We consider the elements and attributes below to be safe. Ideally
381 + * don't add any new ones but feel free to remove unwanted ones.
382 + */
383 + /* allowed element names */
384 + let ALLOWED_TAGS = null;
385 + const DEFAULT_ALLOWED_TAGS = addToSet({}, [...html$1, ...svg$1, ...svgFilters, ...mathMl$1, ...text]);
386 + /* Allowed attribute names */
387 + let ALLOWED_ATTR = null;
388 + const DEFAULT_ALLOWED_ATTR = addToSet({}, [...html, ...svg, ...mathMl, ...xml]);
389 + /*
390 + * Configure how DOMPurify should handle custom elements and their attributes as well as customized built-in elements.
391 + * @property {RegExp|Function|null} tagNameCheck one of [null, regexPattern, predicate]. Default: `null` (disallow any custom elements)
392 + * @property {RegExp|Function|null} attributeNameCheck one of [null, regexPattern, predicate]. Default: `null` (disallow any attributes not on the allow list)
393 + * @property {boolean} allowCustomizedBuiltInElements allow custom elements derived from built-ins if they pass CUSTOM_ELEMENT_HANDLING.tagNameCheck. Default: `false`.
394 + */
395 + let CUSTOM_ELEMENT_HANDLING = Object.seal(create(null, {
396 + tagNameCheck: {
397 + writable: true,
398 + configurable: false,
399 + enumerable: true,
400 + value: null
401 + },
402 + attributeNameCheck: {
403 + writable: true,
404 + configurable: false,
405 + enumerable: true,
406 + value: null
407 + },
408 + allowCustomizedBuiltInElements: {
409 + writable: true,
410 + configurable: false,
411 + enumerable: true,
412 + value: false
413 + }
414 + }));
415 + /* Explicitly forbidden tags (overrides ALLOWED_TAGS/ADD_TAGS) */
416 + let FORBID_TAGS = null;
417 + /* Explicitly forbidden attributes (overrides ALLOWED_ATTR/ADD_ATTR) */
418 + let FORBID_ATTR = null;
419 + /* Config object to store ADD_TAGS/ADD_ATTR functions (when used as functions) */
420 + const EXTRA_ELEMENT_HANDLING = Object.seal(create(null, {
421 + tagCheck: {
422 + writable: true,
423 + configurable: false,
424 + enumerable: true,
425 + value: null
426 + },
427 + attributeCheck: {
428 + writable: true,
429 + configurable: false,
430 + enumerable: true,
431 + value: null
432 + }
433 + }));
434 + /* Decide if ARIA attributes are okay */
435 + let ALLOW_ARIA_ATTR = true;
436 + /* Decide if custom data attributes are okay */
437 + let ALLOW_DATA_ATTR = true;
438 + /* Decide if unknown protocols are okay */
439 + let ALLOW_UNKNOWN_PROTOCOLS = false;
440 + /* Decide if self-closing tags in attributes are allowed.
441 + * Usually removed due to a mXSS issue in jQuery 3.0 */
442 + let ALLOW_SELF_CLOSE_IN_ATTR = true;
443 + /* Output should be safe for common template engines.
444 + * This means, DOMPurify removes data attributes, mustaches and ERB
445 + */
446 + let SAFE_FOR_TEMPLATES = false;
447 + /* Output should be safe even for XML used within HTML and alike.
448 + * This means, DOMPurify removes comments when containing risky content.
449 + */
450 + let SAFE_FOR_XML = true;
451 + /* Decide if document with <html>... should be returned */
452 + let WHOLE_DOCUMENT = false;
453 + /* Track whether config is already set on this instance of DOMPurify. */
454 + let SET_CONFIG = false;
455 + /* Decide if all elements (e.g. style, script) must be children of
456 + * document.body. By default, browsers might move them to document.head */
457 + let FORCE_BODY = false;
458 + /* Decide if a DOM `HTMLBodyElement` should be returned, instead of a html
459 + * string (or a TrustedHTML object if Trusted Types are supported).
460 + * If `WHOLE_DOCUMENT` is enabled a `HTMLHtmlElement` will be returned instead
461 + */
462 + let RETURN_DOM = false;
463 + /* Decide if a DOM `DocumentFragment` should be returned, instead of a html
464 + * string (or a TrustedHTML object if Trusted Types are supported) */
465 + let RETURN_DOM_FRAGMENT = false;
466 + /* Try to return a Trusted Type object instead of a string, return a string in
467 + * case Trusted Types are not supported */
468 + let RETURN_TRUSTED_TYPE = false;
469 + /* Output should be free from DOM clobbering attacks?
470 + * This sanitizes markups named with colliding, clobberable built-in DOM APIs.
471 + */
472 + let SANITIZE_DOM = true;
473 + /* Achieve full DOM Clobbering protection by isolating the namespace of named
474 + * properties and JS variables, mitigating attacks that abuse the HTML/DOM spec rules.
475 + *
476 + * HTML/DOM spec rules that enable DOM Clobbering:
477 + * - Named Access on Window (§7.3.3)
478 + * - DOM Tree Accessors (§3.1.5)
479 + * - Form Element Parent-Child Relations (§4.10.3)
480 + * - Iframe srcdoc / Nested WindowProxies (§4.8.5)
481 + * - HTMLCollection (§4.2.10.2)
482 + *
483 + * Namespace isolation is implemented by prefixing `id` and `name` attributes
484 + * with a constant string, i.e., `user-content-`
485 + */
486 + let SANITIZE_NAMED_PROPS = false;
487 + const SANITIZE_NAMED_PROPS_PREFIX = 'user-content-';
488 + /* Keep element content when removing element? */
489 + let KEEP_CONTENT = true;
490 + /* If a `Node` is passed to sanitize(), then performs sanitization in-place instead
491 + * of importing it into a new Document and returning a sanitized copy */
492 + let IN_PLACE = false;
493 + /* Allow usage of profiles like html, svg and mathMl */
494 + let USE_PROFILES = {};
495 + /* Tags to ignore content of when KEEP_CONTENT is true */
496 + let FORBID_CONTENTS = null;
497 + 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']);
498 + /* Tags that are safe for data: URIs */
499 + let DATA_URI_TAGS = null;
500 + const DEFAULT_DATA_URI_TAGS = addToSet({}, ['audio', 'video', 'img', 'source', 'image', 'track']);
501 + /* Attributes safe for values like "javascript:" */
502 + let URI_SAFE_ATTRIBUTES = null;
503 + const DEFAULT_URI_SAFE_ATTRIBUTES = addToSet({}, ['alt', 'class', 'for', 'id', 'label', 'name', 'pattern', 'placeholder', 'role', 'summary', 'title', 'value', 'style', 'xmlns']);
504 + const MATHML_NAMESPACE = 'http://www.w3.org/1998/Math/MathML';
505 + const SVG_NAMESPACE = 'http://www.w3.org/2000/svg';
506 + const HTML_NAMESPACE = 'http://www.w3.org/1999/xhtml';
507 + /* Document namespace */
508 + let NAMESPACE = HTML_NAMESPACE;
509 + let IS_EMPTY_INPUT = false;
510 + /* Allowed XHTML+XML namespaces */
511 + let ALLOWED_NAMESPACES = null;
512 + const DEFAULT_ALLOWED_NAMESPACES = addToSet({}, [MATHML_NAMESPACE, SVG_NAMESPACE, HTML_NAMESPACE], stringToString);
513 + let MATHML_TEXT_INTEGRATION_POINTS = addToSet({}, ['mi', 'mo', 'mn', 'ms', 'mtext']);
514 + let HTML_INTEGRATION_POINTS = addToSet({}, ['annotation-xml']);
515 + // Certain elements are allowed in both SVG and HTML
516 + // namespace. We need to specify them explicitly
517 + // so that they don't get erroneously deleted from
518 + // HTML namespace.
519 + const COMMON_SVG_AND_HTML_ELEMENTS = addToSet({}, ['title', 'style', 'font', 'a', 'script']);
520 + /* Parsing of strict XHTML documents */
521 + let PARSER_MEDIA_TYPE = null;
522 + const SUPPORTED_PARSER_MEDIA_TYPES = ['application/xhtml+xml', 'text/html'];
523 + const DEFAULT_PARSER_MEDIA_TYPE = 'text/html';
524 + let transformCaseFunc = null;
525 + /* Keep a reference to config to pass to hooks */
526 + let CONFIG = null;
527 + /* Ideally, do not touch anything below this line */
528 + /* ______________________________________________ */
529 + const formElement = document.createElement('form');
530 + const isRegexOrFunction = function isRegexOrFunction(testValue) {
531 + return testValue instanceof RegExp || testValue instanceof Function;
532 + };
533 + /**
534 + * _parseConfig
535 + *
536 + * @param cfg optional config literal
537 + */
538 + // eslint-disable-next-line complexity
539 + const _parseConfig = function _parseConfig() {
540 + let cfg = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : {};
541 + if (CONFIG && CONFIG === cfg) {
542 + return;
543 + }
544 + /* Shield configuration object from tampering */
545 + if (!cfg || typeof cfg !== 'object') {
546 + cfg = {};
547 + }
548 + /* Shield configuration object from prototype pollution */
549 + cfg = clone(cfg);
550 + PARSER_MEDIA_TYPE =
551 + // eslint-disable-next-line unicorn/prefer-includes
552 + SUPPORTED_PARSER_MEDIA_TYPES.indexOf(cfg.PARSER_MEDIA_TYPE) === -1 ? DEFAULT_PARSER_MEDIA_TYPE : cfg.PARSER_MEDIA_TYPE;
553 + // HTML tags and attributes are not case-sensitive, converting to lowercase. Keeping XHTML as is.
554 + transformCaseFunc = PARSER_MEDIA_TYPE === 'application/xhtml+xml' ? stringToString : stringToLowerCase;
555 + /* Set configuration parameters */
556 + ALLOWED_TAGS = objectHasOwnProperty(cfg, 'ALLOWED_TAGS') ? addToSet({}, cfg.ALLOWED_TAGS, transformCaseFunc) : DEFAULT_ALLOWED_TAGS;
557 + ALLOWED_ATTR = objectHasOwnProperty(cfg, 'ALLOWED_ATTR') ? addToSet({}, cfg.ALLOWED_ATTR, transformCaseFunc) : DEFAULT_ALLOWED_ATTR;
558 + ALLOWED_NAMESPACES = objectHasOwnProperty(cfg, 'ALLOWED_NAMESPACES') ? addToSet({}, cfg.ALLOWED_NAMESPACES, stringToString) : DEFAULT_ALLOWED_NAMESPACES;
559 + 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;
560 + 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;
561 + FORBID_CONTENTS = objectHasOwnProperty(cfg, 'FORBID_CONTENTS') ? addToSet({}, cfg.FORBID_CONTENTS, transformCaseFunc) : DEFAULT_FORBID_CONTENTS;
562 + FORBID_TAGS = objectHasOwnProperty(cfg, 'FORBID_TAGS') ? addToSet({}, cfg.FORBID_TAGS, transformCaseFunc) : clone({});
563 + FORBID_ATTR = objectHasOwnProperty(cfg, 'FORBID_ATTR') ? addToSet({}, cfg.FORBID_ATTR, transformCaseFunc) : clone({});
564 + USE_PROFILES = objectHasOwnProperty(cfg, 'USE_PROFILES') ? cfg.USE_PROFILES : false;
565 + ALLOW_ARIA_ATTR = cfg.ALLOW_ARIA_ATTR !== false; // Default true
566 + ALLOW_DATA_ATTR = cfg.ALLOW_DATA_ATTR !== false; // Default true
567 + ALLOW_UNKNOWN_PROTOCOLS = cfg.ALLOW_UNKNOWN_PROTOCOLS || false; // Default false
568 + ALLOW_SELF_CLOSE_IN_ATTR = cfg.ALLOW_SELF_CLOSE_IN_ATTR !== false; // Default true
569 + SAFE_FOR_TEMPLATES = cfg.SAFE_FOR_TEMPLATES || false; // Default false
570 + SAFE_FOR_XML = cfg.SAFE_FOR_XML !== false; // Default true
571 + WHOLE_DOCUMENT = cfg.WHOLE_DOCUMENT || false; // Default false
572 + RETURN_DOM = cfg.RETURN_DOM || false; // Default false
573 + RETURN_DOM_FRAGMENT = cfg.RETURN_DOM_FRAGMENT || false; // Default false
574 + RETURN_TRUSTED_TYPE = cfg.RETURN_TRUSTED_TYPE || false; // Default false
575 + FORCE_BODY = cfg.FORCE_BODY || false; // Default false
576 + SANITIZE_DOM = cfg.SANITIZE_DOM !== false; // Default true
577 + SANITIZE_NAMED_PROPS = cfg.SANITIZE_NAMED_PROPS || false; // Default false
578 + KEEP_CONTENT = cfg.KEEP_CONTENT !== false; // Default true
579 + IN_PLACE = cfg.IN_PLACE || false; // Default false
580 + IS_ALLOWED_URI$1 = cfg.ALLOWED_URI_REGEXP || IS_ALLOWED_URI;
581 + NAMESPACE = cfg.NAMESPACE || HTML_NAMESPACE;
582 + MATHML_TEXT_INTEGRATION_POINTS = cfg.MATHML_TEXT_INTEGRATION_POINTS || MATHML_TEXT_INTEGRATION_POINTS;
583 + HTML_INTEGRATION_POINTS = cfg.HTML_INTEGRATION_POINTS || HTML_INTEGRATION_POINTS;
584 + CUSTOM_ELEMENT_HANDLING = cfg.CUSTOM_ELEMENT_HANDLING || {};
585 + if (cfg.CUSTOM_ELEMENT_HANDLING && isRegexOrFunction(cfg.CUSTOM_ELEMENT_HANDLING.tagNameCheck)) {
586 + CUSTOM_ELEMENT_HANDLING.tagNameCheck = cfg.CUSTOM_ELEMENT_HANDLING.tagNameCheck;
587 + }
588 + if (cfg.CUSTOM_ELEMENT_HANDLING && isRegexOrFunction(cfg.CUSTOM_ELEMENT_HANDLING.attributeNameCheck)) {
589 + CUSTOM_ELEMENT_HANDLING.attributeNameCheck = cfg.CUSTOM_ELEMENT_HANDLING.attributeNameCheck;
590 + }
591 + if (cfg.CUSTOM_ELEMENT_HANDLING && typeof cfg.CUSTOM_ELEMENT_HANDLING.allowCustomizedBuiltInElements === 'boolean') {
592 + CUSTOM_ELEMENT_HANDLING.allowCustomizedBuiltInElements = cfg.CUSTOM_ELEMENT_HANDLING.allowCustomizedBuiltInElements;
593 + }
594 + if (SAFE_FOR_TEMPLATES) {
595 + ALLOW_DATA_ATTR = false;
596 + }
597 + if (RETURN_DOM_FRAGMENT) {
598 + RETURN_DOM = true;
599 + }
600 + /* Parse profile info */
601 + if (USE_PROFILES) {
602 + ALLOWED_TAGS = addToSet({}, text);
603 + ALLOWED_ATTR = create(null);
604 + if (USE_PROFILES.html === true) {
605 + addToSet(ALLOWED_TAGS, html$1);
606 + addToSet(ALLOWED_ATTR, html);
607 + }
608 + if (USE_PROFILES.svg === true) {
609 + addToSet(ALLOWED_TAGS, svg$1);
610 + addToSet(ALLOWED_ATTR, svg);
611 + addToSet(ALLOWED_ATTR, xml);
612 + }
613 + if (USE_PROFILES.svgFilters === true) {
614 + addToSet(ALLOWED_TAGS, svgFilters);
615 + addToSet(ALLOWED_ATTR, svg);
616 + addToSet(ALLOWED_ATTR, xml);
617 + }
618 + if (USE_PROFILES.mathMl === true) {
619 + addToSet(ALLOWED_TAGS, mathMl$1);
620 + addToSet(ALLOWED_ATTR, mathMl);
621 + addToSet(ALLOWED_ATTR, xml);
622 + }
623 + }
624 + /* Prevent function-based ADD_ATTR / ADD_TAGS from leaking across calls */
625 + if (!objectHasOwnProperty(cfg, 'ADD_TAGS')) {
626 + EXTRA_ELEMENT_HANDLING.tagCheck = null;
627 + }
628 + if (!objectHasOwnProperty(cfg, 'ADD_ATTR')) {
629 + EXTRA_ELEMENT_HANDLING.attributeCheck = null;
630 + }
631 + /* Merge configuration parameters */
632 + if (cfg.ADD_TAGS) {
633 + if (typeof cfg.ADD_TAGS === 'function') {
634 + EXTRA_ELEMENT_HANDLING.tagCheck = cfg.ADD_TAGS;
635 + } else {
636 + if (ALLOWED_TAGS === DEFAULT_ALLOWED_TAGS) {
637 + ALLOWED_TAGS = clone(ALLOWED_TAGS);
638 + }
639 + addToSet(ALLOWED_TAGS, cfg.ADD_TAGS, transformCaseFunc);
640 + }
641 + }
642 + if (cfg.ADD_ATTR) {
643 + if (typeof cfg.ADD_ATTR === 'function') {
644 + EXTRA_ELEMENT_HANDLING.attributeCheck = cfg.ADD_ATTR;
645 + } else {
646 + if (ALLOWED_ATTR === DEFAULT_ALLOWED_ATTR) {
647 + ALLOWED_ATTR = clone(ALLOWED_ATTR);
648 + }
649 + addToSet(ALLOWED_ATTR, cfg.ADD_ATTR, transformCaseFunc);
650 + }
651 + }
652 + if (cfg.ADD_URI_SAFE_ATTR) {
653 + addToSet(URI_SAFE_ATTRIBUTES, cfg.ADD_URI_SAFE_ATTR, transformCaseFunc);
654 + }
655 + if (cfg.FORBID_CONTENTS) {
656 + if (FORBID_CONTENTS === DEFAULT_FORBID_CONTENTS) {
657 + FORBID_CONTENTS = clone(FORBID_CONTENTS);
658 + }
659 + addToSet(FORBID_CONTENTS, cfg.FORBID_CONTENTS, transformCaseFunc);
660 + }
661 + if (cfg.ADD_FORBID_CONTENTS) {
662 + if (FORBID_CONTENTS === DEFAULT_FORBID_CONTENTS) {
663 + FORBID_CONTENTS = clone(FORBID_CONTENTS);
664 + }
665 + addToSet(FORBID_CONTENTS, cfg.ADD_FORBID_CONTENTS, transformCaseFunc);
666 + }
667 + /* Add #text in case KEEP_CONTENT is set to true */
668 + if (KEEP_CONTENT) {
669 + ALLOWED_TAGS['#text'] = true;
670 + }
671 + /* Add html, head and body to ALLOWED_TAGS in case WHOLE_DOCUMENT is true */
672 + if (WHOLE_DOCUMENT) {
673 + addToSet(ALLOWED_TAGS, ['html', 'head', 'body']);
674 + }
675 + /* Add tbody to ALLOWED_TAGS in case tables are permitted, see #286, #365 */
676 + if (ALLOWED_TAGS.table) {
677 + addToSet(ALLOWED_TAGS, ['tbody']);
678 + delete FORBID_TAGS.tbody;
679 + }
680 + if (cfg.TRUSTED_TYPES_POLICY) {
681 + if (typeof cfg.TRUSTED_TYPES_POLICY.createHTML !== 'function') {
682 + throw typeErrorCreate('TRUSTED_TYPES_POLICY configuration option must provide a "createHTML" hook.');
683 + }
684 + if (typeof cfg.TRUSTED_TYPES_POLICY.createScriptURL !== 'function') {
685 + throw typeErrorCreate('TRUSTED_TYPES_POLICY configuration option must provide a "createScriptURL" hook.');
686 + }
687 + // Overwrite existing TrustedTypes policy.
688 + trustedTypesPolicy = cfg.TRUSTED_TYPES_POLICY;
689 + // Sign local variables required by `sanitize`.
690 + emptyHTML = trustedTypesPolicy.createHTML('');
691 + } else {
692 + // Uninitialized policy, attempt to initialize the internal dompurify policy.
693 + if (trustedTypesPolicy === undefined) {
694 + trustedTypesPolicy = _createTrustedTypesPolicy(trustedTypes, currentScript);
695 + }
696 + // If creating the internal policy succeeded sign internal variables.
697 + if (trustedTypesPolicy !== null && typeof emptyHTML === 'string') {
698 + emptyHTML = trustedTypesPolicy.createHTML('');
699 + }
700 + }
701 + // Prevent further manipulation of configuration.
702 + // Not available in IE8, Safari 5, etc.
703 + if (freeze) {
704 + freeze(cfg);
705 + }
706 + CONFIG = cfg;
707 + };
708 + /* Keep track of all possible SVG and MathML tags
709 + * so that we can perform the namespace checks
710 + * correctly. */
711 + const ALL_SVG_TAGS = addToSet({}, [...svg$1, ...svgFilters, ...svgDisallowed]);
712 + const ALL_MATHML_TAGS = addToSet({}, [...mathMl$1, ...mathMlDisallowed]);
713 + /**
714 + * @param element a DOM element whose namespace is being checked
715 + * @returns Return false if the element has a
716 + * namespace that a spec-compliant parser would never
717 + * return. Return true otherwise.
718 + */
719 + const _checkValidNamespace = function _checkValidNamespace(element) {
720 + let parent = getParentNode(element);
721 + // In JSDOM, if we're inside shadow DOM, then parentNode
722 + // can be null. We just simulate parent in this case.
723 + if (!parent || !parent.tagName) {
724 + parent = {
725 + namespaceURI: NAMESPACE,
726 + tagName: 'template'
727 + };
728 + }
729 + const tagName = stringToLowerCase(element.tagName);
730 + const parentTagName = stringToLowerCase(parent.tagName);
731 + if (!ALLOWED_NAMESPACES[element.namespaceURI]) {
732 + return false;
733 + }
734 + if (element.namespaceURI === SVG_NAMESPACE) {
735 + // The only way to switch from HTML namespace to SVG
736 + // is via <svg>. If it happens via any other tag, then
737 + // it should be killed.
738 + if (parent.namespaceURI === HTML_NAMESPACE) {
739 + return tagName === 'svg';
740 + }
741 + // The only way to switch from MathML to SVG is via`
742 + // svg if parent is either <annotation-xml> or MathML
743 + // text integration points.
744 + if (parent.namespaceURI === MATHML_NAMESPACE) {
745 + return tagName === 'svg' && (parentTagName === 'annotation-xml' || MATHML_TEXT_INTEGRATION_POINTS[parentTagName]);
746 + }
747 + // We only allow elements that are defined in SVG
748 + // spec. All others are disallowed in SVG namespace.
749 + return Boolean(ALL_SVG_TAGS[tagName]);
750 + }
751 + if (element.namespaceURI === MATHML_NAMESPACE) {
752 + // The only way to switch from HTML namespace to MathML
753 + // is via <math>. If it happens via any other tag, then
754 + // it should be killed.
755 + if (parent.namespaceURI === HTML_NAMESPACE) {
756 + return tagName === 'math';
757 + }
758 + // The only way to switch from SVG to MathML is via
759 + // <math> and HTML integration points
760 + if (parent.namespaceURI === SVG_NAMESPACE) {
761 + return tagName === 'math' && HTML_INTEGRATION_POINTS[parentTagName];
762 + }
763 + // We only allow elements that are defined in MathML
764 + // spec. All others are disallowed in MathML namespace.
765 + return Boolean(ALL_MATHML_TAGS[tagName]);
766 + }
767 + if (element.namespaceURI === HTML_NAMESPACE) {
768 + // The only way to switch from SVG to HTML is via
769 + // HTML integration points, and from MathML to HTML
770 + // is via MathML text integration points
771 + if (parent.namespaceURI === SVG_NAMESPACE && !HTML_INTEGRATION_POINTS[parentTagName]) {
772 + return false;
773 + }
774 + if (parent.namespaceURI === MATHML_NAMESPACE && !MATHML_TEXT_INTEGRATION_POINTS[parentTagName]) {
775 + return false;
776 + }
777 + // We disallow tags that are specific for MathML
778 + // or SVG and should never appear in HTML namespace
779 + return !ALL_MATHML_TAGS[tagName] && (COMMON_SVG_AND_HTML_ELEMENTS[tagName] || !ALL_SVG_TAGS[tagName]);
780 + }
781 + // For XHTML and XML documents that support custom namespaces
782 + if (PARSER_MEDIA_TYPE === 'application/xhtml+xml' && ALLOWED_NAMESPACES[element.namespaceURI]) {
783 + return true;
784 + }
785 + // The code should never reach this place (this means
786 + // that the element somehow got namespace that is not
787 + // HTML, SVG, MathML or allowed via ALLOWED_NAMESPACES).
788 + // Return false just in case.
789 + return false;
790 + };
791 + /**
792 + * _forceRemove
793 + *
794 + * @param node a DOM node
795 + */
796 + const _forceRemove = function _forceRemove(node) {
797 + arrayPush(DOMPurify.removed, {
798 + element: node
799 + });
800 + try {
801 + // eslint-disable-next-line unicorn/prefer-dom-node-remove
802 + getParentNode(node).removeChild(node);
803 + } catch (_) {
804 + remove(node);
805 + }
806 + };
807 + /**
808 + * _removeAttribute
809 + *
810 + * @param name an Attribute name
811 + * @param element a DOM node
812 + */
813 + const _removeAttribute = function _removeAttribute(name, element) {
814 + try {
815 + arrayPush(DOMPurify.removed, {
816 + attribute: element.getAttributeNode(name),
817 + from: element
818 + });
819 + } catch (_) {
820 + arrayPush(DOMPurify.removed, {
821 + attribute: null,
822 + from: element
823 + });
824 + }
825 + element.removeAttribute(name);
826 + // We void attribute values for unremovable "is" attributes
827 + if (name === 'is') {
828 + if (RETURN_DOM || RETURN_DOM_FRAGMENT) {
829 + try {
830 + _forceRemove(element);
831 + } catch (_) {}
832 + } else {
833 + try {
834 + element.setAttribute(name, '');
835 + } catch (_) {}
836 + }
837 + }
838 + };
839 + /**
840 + * _initDocument
841 + *
842 + * @param dirty - a string of dirty markup
843 + * @return a DOM, filled with the dirty markup
844 + */
845 + const _initDocument = function _initDocument(dirty) {
846 + /* Create a HTML document */
847 + let doc = null;
848 + let leadingWhitespace = null;
849 + if (FORCE_BODY) {
850 + dirty = '<remove></remove>' + dirty;
851 + } else {
852 + /* If FORCE_BODY isn't used, leading whitespace needs to be preserved manually */
853 + const matches = stringMatch(dirty, /^[\r\n\t ]+/);
854 + leadingWhitespace = matches && matches[0];
855 + }
856 + if (PARSER_MEDIA_TYPE === 'application/xhtml+xml' && NAMESPACE === HTML_NAMESPACE) {
857 + // Root of XHTML doc must contain xmlns declaration (see https://www.w3.org/TR/xhtml1/normative.html#strict)
858 + dirty = '<html xmlns="http://www.w3.org/1999/xhtml"><head></head><body>' + dirty + '</body></html>';
859 + }
860 + const dirtyPayload = trustedTypesPolicy ? trustedTypesPolicy.createHTML(dirty) : dirty;
861 + /*
862 + * Use the DOMParser API by default, fallback later if needs be
863 + * DOMParser not work for svg when has multiple root element.
864 + */
865 + if (NAMESPACE === HTML_NAMESPACE) {
866 + try {
867 + doc = new DOMParser().parseFromString(dirtyPayload, PARSER_MEDIA_TYPE);
868 + } catch (_) {}
869 + }
870 + /* Use createHTMLDocument in case DOMParser is not available */
871 + if (!doc || !doc.documentElement) {
872 + doc = implementation.createDocument(NAMESPACE, 'template', null);
873 + try {
874 + doc.documentElement.innerHTML = IS_EMPTY_INPUT ? emptyHTML : dirtyPayload;
875 + } catch (_) {
876 + // Syntax error if dirtyPayload is invalid xml
877 + }
878 + }
879 + const body = doc.body || doc.documentElement;
880 + if (dirty && leadingWhitespace) {
881 + body.insertBefore(document.createTextNode(leadingWhitespace), body.childNodes[0] || null);
882 + }
883 + /* Work on whole document or just its body */
884 + if (NAMESPACE === HTML_NAMESPACE) {
885 + return getElementsByTagName.call(doc, WHOLE_DOCUMENT ? 'html' : 'body')[0];
886 + }
887 + return WHOLE_DOCUMENT ? doc.documentElement : body;
888 + };
889 + /**
890 + * Creates a NodeIterator object that you can use to traverse filtered lists of nodes or elements in a document.
891 + *
892 + * @param root The root element or node to start traversing on.
893 + * @return The created NodeIterator
894 + */
895 + const _createNodeIterator = function _createNodeIterator(root) {
896 + return createNodeIterator.call(root.ownerDocument || root, root,
897 + // eslint-disable-next-line no-bitwise
898 + NodeFilter.SHOW_ELEMENT | NodeFilter.SHOW_COMMENT | NodeFilter.SHOW_TEXT | NodeFilter.SHOW_PROCESSING_INSTRUCTION | NodeFilter.SHOW_CDATA_SECTION, null);
899 + };
900 + /**
901 + * _isClobbered
902 + *
903 + * @param element element to check for clobbering attacks
904 + * @return true if clobbered, false if safe
905 + */
906 + const _isClobbered = function _isClobbered(element) {
907 + 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');
908 + };
909 + /**
910 + * Checks whether the given object is a DOM node.
911 + *
912 + * @param value object to check whether it's a DOM node
913 + * @return true is object is a DOM node
914 + */
915 + const _isNode = function _isNode(value) {
916 + return typeof Node === 'function' && value instanceof Node;
917 + };
918 + function _executeHooks(hooks, currentNode, data) {
919 + arrayForEach(hooks, hook => {
920 + hook.call(DOMPurify, currentNode, data, CONFIG);
921 + });
922 + }
923 + /**
924 + * _sanitizeElements
925 + *
926 + * @protect nodeName
927 + * @protect textContent
928 + * @protect removeChild
929 + * @param currentNode to check for permission to exist
930 + * @return true if node was killed, false if left alive
931 + */
932 + const _sanitizeElements = function _sanitizeElements(currentNode) {
933 + let content = null;
934 + /* Execute a hook if present */
935 + _executeHooks(hooks.beforeSanitizeElements, currentNode, null);
936 + /* Check if element is clobbered or can clobber */
937 + if (_isClobbered(currentNode)) {
938 + _forceRemove(currentNode);
939 + return true;
940 + }
941 + /* Now let's check the element's type and name */
942 + const tagName = transformCaseFunc(currentNode.nodeName);
943 + /* Execute a hook if present */
944 + _executeHooks(hooks.uponSanitizeElement, currentNode, {
945 + tagName,
946 + allowedTags: ALLOWED_TAGS
947 + });
948 + /* Detect mXSS attempts abusing namespace confusion */
949 + if (SAFE_FOR_XML && currentNode.hasChildNodes() && !_isNode(currentNode.firstElementChild) && regExpTest(/<[/\w!]/g, currentNode.innerHTML) && regExpTest(/<[/\w!]/g, currentNode.textContent)) {
950 + _forceRemove(currentNode);
951 + return true;
952 + }
953 + /* Remove any occurrence of processing instructions */
954 + if (currentNode.nodeType === NODE_TYPE.progressingInstruction) {
955 + _forceRemove(currentNode);
956 + return true;
957 + }
958 + /* Remove any kind of possibly harmful comments */
959 + if (SAFE_FOR_XML && currentNode.nodeType === NODE_TYPE.comment && regExpTest(/<[/\w]/g, currentNode.data)) {
960 + _forceRemove(currentNode);
961 + return true;
962 + }
963 + /* Remove element if anything forbids its presence */
964 + if (!(EXTRA_ELEMENT_HANDLING.tagCheck instanceof Function && EXTRA_ELEMENT_HANDLING.tagCheck(tagName)) && (!ALLOWED_TAGS[tagName] || FORBID_TAGS[tagName])) {
965 + /* Check if we have a custom element to handle */
966 + if (!FORBID_TAGS[tagName] && _isBasicCustomElement(tagName)) {
967 + if (CUSTOM_ELEMENT_HANDLING.tagNameCheck instanceof RegExp && regExpTest(CUSTOM_ELEMENT_HANDLING.tagNameCheck, tagName)) {
968 + return false;
969 + }
970 + if (CUSTOM_ELEMENT_HANDLING.tagNameCheck instanceof Function && CUSTOM_ELEMENT_HANDLING.tagNameCheck(tagName)) {
971 + return false;
972 + }
973 + }
974 + /* Keep content except for bad-listed elements */
975 + if (KEEP_CONTENT && !FORBID_CONTENTS[tagName]) {
976 + const parentNode = getParentNode(currentNode) || currentNode.parentNode;
977 + const childNodes = getChildNodes(currentNode) || currentNode.childNodes;
978 + if (childNodes && parentNode) {
979 + const childCount = childNodes.length;
980 + for (let i = childCount - 1; i >= 0; --i) {
981 + const childClone = cloneNode(childNodes[i], true);
982 + childClone.__removalCount = (currentNode.__removalCount || 0) + 1;
983 + parentNode.insertBefore(childClone, getNextSibling(currentNode));
984 + }
985 + }
986 + }
987 + _forceRemove(currentNode);
988 + return true;
989 + }
990 + /* Check whether element has a valid namespace */
991 + if (currentNode instanceof Element && !_checkValidNamespace(currentNode)) {
992 + _forceRemove(currentNode);
993 + return true;
994 + }
995 + /* Make sure that older browsers don't get fallback-tag mXSS */
996 + if ((tagName === 'noscript' || tagName === 'noembed' || tagName === 'noframes') && regExpTest(/<\/no(script|embed|frames)/i, currentNode.innerHTML)) {
997 + _forceRemove(currentNode);
998 + return true;
999 + }
1000 + /* Sanitize element content to be template-safe */
1001 + if (SAFE_FOR_TEMPLATES && currentNode.nodeType === NODE_TYPE.text) {
1002 + /* Get the element's text content */
1003 + content = currentNode.textContent;
1004 + arrayForEach([MUSTACHE_EXPR, ERB_EXPR, TMPLIT_EXPR], expr => {
1005 + content = stringReplace(content, expr, ' ');
1006 + });
1007 + if (currentNode.textContent !== content) {
1008 + arrayPush(DOMPurify.removed, {
1009 + element: currentNode.cloneNode()
1010 + });
1011 + currentNode.textContent = content;
1012 + }
1013 + }
1014 + /* Execute a hook if present */
1015 + _executeHooks(hooks.afterSanitizeElements, currentNode, null);
1016 + return false;
1017 + };
1018 + /**
1019 + * _isValidAttribute
1020 + *
1021 + * @param lcTag Lowercase tag name of containing element.
1022 + * @param lcName Lowercase attribute name.
1023 + * @param value Attribute value.
1024 + * @return Returns true if `value` is valid, otherwise false.
1025 + */
1026 + // eslint-disable-next-line complexity
1027 + const _isValidAttribute = function _isValidAttribute(lcTag, lcName, value) {
1028 + /* FORBID_ATTR must always win, even if ADD_ATTR predicate would allow it */
1029 + if (FORBID_ATTR[lcName]) {
1030 + return false;
1031 + }
1032 + /* Make sure attribute cannot clobber */
1033 + if (SANITIZE_DOM && (lcName === 'id' || lcName === 'name') && (value in document || value in formElement)) {
1034 + return false;
1035 + }
1036 + /* Allow valid data-* attributes: At least one character after "-"
1037 + (https://html.spec.whatwg.org/multipage/dom.html#embedding-custom-non-visible-data-with-the-data-*-attributes)
1038 + XML-compatible (https://html.spec.whatwg.org/multipage/infrastructure.html#xml-compatible and http://www.w3.org/TR/xml/#d0e804)
1039 + We don't need to check the value; it's always URI safe. */
1040 + if (ALLOW_DATA_ATTR && !FORBID_ATTR[lcName] && regExpTest(DATA_ATTR, lcName)) ; else if (ALLOW_ARIA_ATTR && regExpTest(ARIA_ATTR, lcName)) ; else if (EXTRA_ELEMENT_HANDLING.attributeCheck instanceof Function && EXTRA_ELEMENT_HANDLING.attributeCheck(lcName, lcTag)) ; else if (!ALLOWED_ATTR[lcName] || FORBID_ATTR[lcName]) {
1041 + if (
1042 + // First condition does a very basic check if a) it's basically a valid custom element tagname AND
1043 + // b) if the tagName passes whatever the user has configured for CUSTOM_ELEMENT_HANDLING.tagNameCheck
1044 + // and c) if the attribute name passes whatever the user has configured for CUSTOM_ELEMENT_HANDLING.attributeNameCheck
1045 + _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, lcTag)) ||
1046 + // Alternative, second condition checks if it's an `is`-attribute, AND
1047 + // the value passes whatever the user has configured for CUSTOM_ELEMENT_HANDLING.tagNameCheck
1048 + 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))) ; else {
1049 + return false;
1050 + }
1051 + /* Check value is safe. First, is attr inert? If so, is safe */
1052 + } else if (URI_SAFE_ATTRIBUTES[lcName]) ; else if (regExpTest(IS_ALLOWED_URI$1, stringReplace(value, ATTR_WHITESPACE, ''))) ; else if ((lcName === 'src' || lcName === 'xlink:href' || lcName === 'href') && lcTag !== 'script' && stringIndexOf(value, 'data:') === 0 && DATA_URI_TAGS[lcTag]) ; else if (ALLOW_UNKNOWN_PROTOCOLS && !regExpTest(IS_SCRIPT_OR_DATA, stringReplace(value, ATTR_WHITESPACE, ''))) ; else if (value) {
1053 + return false;
1054 + } else ;
1055 + return true;
1056 + };
1057 + /**
1058 + * _isBasicCustomElement
1059 + * checks if at least one dash is included in tagName, and it's not the first char
1060 + * for more sophisticated checking see https://github.com/sindresorhus/validate-element-name
1061 + *
1062 + * @param tagName name of the tag of the node to sanitize
1063 + * @returns Returns true if the tag name meets the basic criteria for a custom element, otherwise false.
1064 + */
1065 + const _isBasicCustomElement = function _isBasicCustomElement(tagName) {
1066 + return tagName !== 'annotation-xml' && stringMatch(tagName, CUSTOM_ELEMENT);
1067 + };
1068 + /**
1069 + * _sanitizeAttributes
1070 + *
1071 + * @protect attributes
1072 + * @protect nodeName
1073 + * @protect removeAttribute
1074 + * @protect setAttribute
1075 + *
1076 + * @param currentNode to sanitize
1077 + */
1078 + const _sanitizeAttributes = function _sanitizeAttributes(currentNode) {
1079 + /* Execute a hook if present */
1080 + _executeHooks(hooks.beforeSanitizeAttributes, currentNode, null);
1081 + const {
1082 + attributes
1083 + } = currentNode;
1084 + /* Check if we have attributes; if not we might have a text node */
1085 + if (!attributes || _isClobbered(currentNode)) {
1086 + return;
1087 + }
1088 + const hookEvent = {
1089 + attrName: '',
1090 + attrValue: '',
1091 + keepAttr: true,
1092 + allowedAttributes: ALLOWED_ATTR,
1093 + forceKeepAttr: undefined
1094 + };
1095 + let l = attributes.length;
1096 + /* Go backwards over all attributes; safely remove bad ones */
1097 + while (l--) {
1098 + const attr = attributes[l];
1099 + const {
1100 + name,
1101 + namespaceURI,
1102 + value: attrValue
1103 + } = attr;
1104 + const lcName = transformCaseFunc(name);
1105 + const initValue = attrValue;
1106 + let value = name === 'value' ? initValue : stringTrim(initValue);
1107 + /* Execute a hook if present */
1108 + hookEvent.attrName = lcName;
1109 + hookEvent.attrValue = value;
1110 + hookEvent.keepAttr = true;
1111 + hookEvent.forceKeepAttr = undefined; // Allows developers to see this is a property they can set
1112 + _executeHooks(hooks.uponSanitizeAttribute, currentNode, hookEvent);
1113 + value = hookEvent.attrValue;
1114 + /* Full DOM Clobbering protection via namespace isolation,
1115 + * Prefix id and name attributes with `user-content-`
1116 + */
1117 + if (SANITIZE_NAMED_PROPS && (lcName === 'id' || lcName === 'name')) {
1118 + // Remove the attribute with this value
1119 + _removeAttribute(name, currentNode);
1120 + // Prefix the value and later re-create the attribute with the sanitized value
1121 + value = SANITIZE_NAMED_PROPS_PREFIX + value;
1122 + }
1123 + /* Work around a security issue with comments inside attributes */
1124 + if (SAFE_FOR_XML && regExpTest(/((--!?|])>)|<\/(style|script|title|xmp|textarea|noscript|iframe|noembed|noframes)/i, value)) {
1125 + _removeAttribute(name, currentNode);
1126 + continue;
1127 + }
1128 + /* Make sure we cannot easily use animated hrefs, even if animations are allowed */
1129 + if (lcName === 'attributename' && stringMatch(value, 'href')) {
1130 + _removeAttribute(name, currentNode);
1131 + continue;
1132 + }
1133 + /* Did the hooks approve of the attribute? */
1134 + if (hookEvent.forceKeepAttr) {
1135 + continue;
1136 + }
1137 + /* Did the hooks approve of the attribute? */
1138 + if (!hookEvent.keepAttr) {
1139 + _removeAttribute(name, currentNode);
1140 + continue;
1141 + }
1142 + /* Work around a security issue in jQuery 3.0 */
1143 + if (!ALLOW_SELF_CLOSE_IN_ATTR && regExpTest(/\/>/i, value)) {
1144 + _removeAttribute(name, currentNode);
1145 + continue;
1146 + }
1147 + /* Sanitize attribute content to be template-safe */
1148 + if (SAFE_FOR_TEMPLATES) {
1149 + arrayForEach([MUSTACHE_EXPR, ERB_EXPR, TMPLIT_EXPR], expr => {
1150 + value = stringReplace(value, expr, ' ');
1151 + });
1152 + }
1153 + /* Is `value` valid for this attribute? */
1154 + const lcTag = transformCaseFunc(currentNode.nodeName);
1155 + if (!_isValidAttribute(lcTag, lcName, value)) {
1156 + _removeAttribute(name, currentNode);
1157 + continue;
1158 + }
1159 + /* Handle attributes that require Trusted Types */
1160 + if (trustedTypesPolicy && typeof trustedTypes === 'object' && typeof trustedTypes.getAttributeType === 'function') {
1161 + if (namespaceURI) ; else {
1162 + switch (trustedTypes.getAttributeType(lcTag, lcName)) {
1163 + case 'TrustedHTML':
1164 + {
1165 + value = trustedTypesPolicy.createHTML(value);
1166 + break;
1167 + }
1168 + case 'TrustedScriptURL':
1169 + {
1170 + value = trustedTypesPolicy.createScriptURL(value);
1171 + break;
1172 + }
1173 + }
1174 + }
1175 + }
1176 + /* Handle invalid data-* attribute set by try-catching it */
1177 + if (value !== initValue) {
1178 + try {
1179 + if (namespaceURI) {
1180 + currentNode.setAttributeNS(namespaceURI, name, value);
1181 + } else {
1182 + /* Fallback to setAttribute() for browser-unrecognized namespaces e.g. "x-schema". */
1183 + currentNode.setAttribute(name, value);
1184 + }
1185 + if (_isClobbered(currentNode)) {
1186 + _forceRemove(currentNode);
1187 + } else {
1188 + arrayPop(DOMPurify.removed);
1189 + }
1190 + } catch (_) {
1191 + _removeAttribute(name, currentNode);
1192 + }
1193 + }
1194 + }
1195 + /* Execute a hook if present */
1196 + _executeHooks(hooks.afterSanitizeAttributes, currentNode, null);
1197 + };
1198 + /**
1199 + * _sanitizeShadowDOM
1200 + *
1201 + * @param fragment to iterate over recursively
1202 + */
1203 + const _sanitizeShadowDOM = function _sanitizeShadowDOM(fragment) {
1204 + let shadowNode = null;
1205 + const shadowIterator = _createNodeIterator(fragment);
1206 + /* Execute a hook if present */
1207 + _executeHooks(hooks.beforeSanitizeShadowDOM, fragment, null);
1208 + while (shadowNode = shadowIterator.nextNode()) {
1209 + /* Execute a hook if present */
1210 + _executeHooks(hooks.uponSanitizeShadowNode, shadowNode, null);
1211 + /* Sanitize tags and elements */
1212 + _sanitizeElements(shadowNode);
1213 + /* Check attributes next */
1214 + _sanitizeAttributes(shadowNode);
1215 + /* Deep shadow DOM detected */
1216 + if (shadowNode.content instanceof DocumentFragment) {
1217 + _sanitizeShadowDOM(shadowNode.content);
1218 + }
1219 + }
1220 + /* Execute a hook if present */
1221 + _executeHooks(hooks.afterSanitizeShadowDOM, fragment, null);
1222 + };
1223 + // eslint-disable-next-line complexity
1224 + DOMPurify.sanitize = function (dirty) {
1225 + let cfg = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : {};
1226 + let body = null;
1227 + let importedNode = null;
1228 + let currentNode = null;
1229 + let returnNode = null;
1230 + /* Make sure we have a string to sanitize.
1231 + DO NOT return early, as this will return the wrong type if
1232 + the user has requested a DOM object rather than a string */
1233 + IS_EMPTY_INPUT = !dirty;
1234 + if (IS_EMPTY_INPUT) {
1235 + dirty = '<!-->';
1236 + }
1237 + /* Stringify, in case dirty is an object */
1238 + if (typeof dirty !== 'string' && !_isNode(dirty)) {
1239 + if (typeof dirty.toString === 'function') {
1240 + dirty = dirty.toString();
1241 + if (typeof dirty !== 'string') {
1242 + throw typeErrorCreate('dirty is not a string, aborting');
1243 + }
1244 + } else {
1245 + throw typeErrorCreate('toString is not a function');
1246 + }
1247 + }
1248 + /* Return dirty HTML if DOMPurify cannot run */
1249 + if (!DOMPurify.isSupported) {
1250 + return dirty;
1251 + }
1252 + /* Assign config vars */
1253 + if (!SET_CONFIG) {
1254 + _parseConfig(cfg);
1255 + }
1256 + /* Clean up removed elements */
1257 + DOMPurify.removed = [];
1258 + /* Check if dirty is correctly typed for IN_PLACE */
1259 + if (typeof dirty === 'string') {
1260 + IN_PLACE = false;
1261 + }
1262 + if (IN_PLACE) {
1263 + /* Do some early pre-sanitization to avoid unsafe root nodes */
1264 + if (dirty.nodeName) {
1265 + const tagName = transformCaseFunc(dirty.nodeName);
1266 + if (!ALLOWED_TAGS[tagName] || FORBID_TAGS[tagName]) {
1267 + throw typeErrorCreate('root node is forbidden and cannot be sanitized in-place');
1268 + }
1269 + }
1270 + } else if (dirty instanceof Node) {
1271 + /* If dirty is a DOM element, append to an empty document to avoid
1272 + elements being stripped by the parser */
1273 + body = _initDocument('<!---->');
1274 + importedNode = body.ownerDocument.importNode(dirty, true);
1275 + if (importedNode.nodeType === NODE_TYPE.element && importedNode.nodeName === 'BODY') {
1276 + /* Node is already a body, use as is */
1277 + body = importedNode;
1278 + } else if (importedNode.nodeName === 'HTML') {
1279 + body = importedNode;
1280 + } else {
1281 + // eslint-disable-next-line unicorn/prefer-dom-node-append
1282 + body.appendChild(importedNode);
1283 + }
1284 + } else {
1285 + /* Exit directly if we have nothing to do */
1286 + if (!RETURN_DOM && !SAFE_FOR_TEMPLATES && !WHOLE_DOCUMENT &&
1287 + // eslint-disable-next-line unicorn/prefer-includes
1288 + dirty.indexOf('<') === -1) {
1289 + return trustedTypesPolicy && RETURN_TRUSTED_TYPE ? trustedTypesPolicy.createHTML(dirty) : dirty;
1290 + }
1291 + /* Initialize the document to work on */
1292 + body = _initDocument(dirty);
1293 + /* Check we have a DOM node from the data */
1294 + if (!body) {
1295 + return RETURN_DOM ? null : RETURN_TRUSTED_TYPE ? emptyHTML : '';
1296 + }
1297 + }
1298 + /* Remove first element node (ours) if FORCE_BODY is set */
1299 + if (body && FORCE_BODY) {
1300 + _forceRemove(body.firstChild);
1301 + }
1302 + /* Get node iterator */
1303 + const nodeIterator = _createNodeIterator(IN_PLACE ? dirty : body);
1304 + /* Now start iterating over the created document */
1305 + while (currentNode = nodeIterator.nextNode()) {
1306 + /* Sanitize tags and elements */
1307 + _sanitizeElements(currentNode);
1308 + /* Check attributes next */
1309 + _sanitizeAttributes(currentNode);
1310 + /* Shadow DOM detected, sanitize it */
1311 + if (currentNode.content instanceof DocumentFragment) {
1312 + _sanitizeShadowDOM(currentNode.content);
1313 + }
1314 + }
1315 + /* If we sanitized `dirty` in-place, return it. */
1316 + if (IN_PLACE) {
1317 + return dirty;
1318 + }
1319 + /* Return sanitized string or DOM */
1320 + if (RETURN_DOM) {
1321 + if (RETURN_DOM_FRAGMENT) {
1322 + returnNode = createDocumentFragment.call(body.ownerDocument);
1323 + while (body.firstChild) {
1324 + // eslint-disable-next-line unicorn/prefer-dom-node-append
1325 + returnNode.appendChild(body.firstChild);
1326 + }
1327 + } else {
1328 + returnNode = body;
1329 + }
1330 + if (ALLOWED_ATTR.shadowroot || ALLOWED_ATTR.shadowrootmode) {
1331 + /*
1332 + AdoptNode() is not used because internal state is not reset
1333 + (e.g. the past names map of a HTMLFormElement), this is safe
1334 + in theory but we would rather not risk another attack vector.
1335 + The state that is cloned by importNode() is explicitly defined
1336 + by the specs.
1337 + */
1338 + returnNode = importNode.call(originalDocument, returnNode, true);
1339 + }
1340 + return returnNode;
1341 + }
1342 + let serializedHTML = WHOLE_DOCUMENT ? body.outerHTML : body.innerHTML;
1343 + /* Serialize doctype if allowed */
1344 + if (WHOLE_DOCUMENT && ALLOWED_TAGS['!doctype'] && body.ownerDocument && body.ownerDocument.doctype && body.ownerDocument.doctype.name && regExpTest(DOCTYPE_NAME, body.ownerDocument.doctype.name)) {
1345 + serializedHTML = '<!DOCTYPE ' + body.ownerDocument.doctype.name + '>\n' + serializedHTML;
1346 + }
1347 + /* Sanitize final string template-safe */
1348 + if (SAFE_FOR_TEMPLATES) {
1349 + arrayForEach([MUSTACHE_EXPR, ERB_EXPR, TMPLIT_EXPR], expr => {
1350 + serializedHTML = stringReplace(serializedHTML, expr, ' ');
1351 + });
1352 + }
1353 + return trustedTypesPolicy && RETURN_TRUSTED_TYPE ? trustedTypesPolicy.createHTML(serializedHTML) : serializedHTML;
1354 + };
1355 + DOMPurify.setConfig = function () {
1356 + let cfg = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : {};
1357 + _parseConfig(cfg);
1358 + SET_CONFIG = true;
1359 + };
1360 + DOMPurify.clearConfig = function () {
1361 + CONFIG = null;
1362 + SET_CONFIG = false;
1363 + };
1364 + DOMPurify.isValidAttribute = function (tag, attr, value) {
1365 + /* Initialize shared config vars if necessary. */
1366 + if (!CONFIG) {
1367 + _parseConfig({});
1368 + }
1369 + const lcTag = transformCaseFunc(tag);
1370 + const lcName = transformCaseFunc(attr);
1371 + return _isValidAttribute(lcTag, lcName, value);
1372 + };
1373 + DOMPurify.addHook = function (entryPoint, hookFunction) {
1374 + if (typeof hookFunction !== 'function') {
1375 + return;
1376 + }
1377 + arrayPush(hooks[entryPoint], hookFunction);
1378 + };
1379 + DOMPurify.removeHook = function (entryPoint, hookFunction) {
1380 + if (hookFunction !== undefined) {
1381 + const index = arrayLastIndexOf(hooks[entryPoint], hookFunction);
1382 + return index === -1 ? undefined : arraySplice(hooks[entryPoint], index, 1)[0];
1383 + }
1384 + return arrayPop(hooks[entryPoint]);
1385 + };
1386 + DOMPurify.removeHooks = function (entryPoint) {
1387 + hooks[entryPoint] = [];
1388 + };
1389 + DOMPurify.removeAllHooks = function () {
1390 + hooks = _createHooksMap();
1391 + };
1392 + return DOMPurify;
1393 +}
1394 +var purify = createDOMPurify();
1395 +
1396 +export { purify as default };
1397 +//# sourceMappingURL=purify.es.mjs.map