Marked: Upgrade and always sanitize by default (#28796)

* Marked: Upgrade and always sanitize by default

* Added test

* corrected text panel logic

package.json

@@ -95,7 +95,6 @@
     "@types/jquery": "3.3.38",
     "@types/lodash": "4.14.149",
     "@types/lru-cache": "^5.1.0",
-    "@types/marked": "1.1.0",
     "@types/moment-timezone": "0.5.13",
     "@types/mousetrap": "1.6.3",
     "@types/node": "13.7.0",
@@ -247,7 +246,6 @@
     "jsurl": "^0.1.5",
     "lodash": "4.17.19",
     "lru-cache": "^5.1.1",
-    "marked": "1.1.1",
     "md5": "^2.2.1",
     "memoize-one": "5.1.1",
     "moment": "2.24.0",

packages/grafana-data/package.json

@@ -28,6 +28,7 @@
     "eventemitter3": "4.0.7",
     "lodash": "4.17.19",
     "rxjs": "6.6.3",
+    "marked": "1.2.2",
     "xss": "1.0.6"
   },
   "devDependencies": {
@@ -40,6 +41,7 @@
     "@types/jquery": "3.3.38",
     "@types/lodash": "4.14.123",
     "@types/node": "10.14.1",
+    "@types/marked": "1.1.0",
     "@types/papaparse": "5.2.0",
     "@types/react": "16.8.16",
     "@types/rollup-plugin-visualizer": "2.6.0",

packages/grafana-data/src/text/markdown.test.ts

@@ -5,4 +5,9 @@ describe('Markdown wrapper', () => {
     const str = renderMarkdown(undefined);
     expect(str).toBe('');
   });
+
+  it('should sanitize by default', () => {
+    const str = renderMarkdown('<script>alert()</script>');
+    expect(str).toBe('&lt;script&gt;alert()&lt;/script&gt;');
+  });
 });

packages/grafana-data/src/text/markdown.ts

-import marked, { MarkedOptions } from 'marked';
+import marked from 'marked';
+import { sanitize } from './sanitize';
 
-const defaultMarkedOptions: MarkedOptions = {
-  renderer: new marked.Renderer(),
-  pedantic: false,
-  gfm: true,
-  sanitize: true,
-  smartLists: true,
-  smartypants: false,
-  xhtml: false,
-};
+let hasInitialized = false;
 
-export function setMarkdownOptions(optionsOverride?: MarkedOptions) {
-  marked.setOptions({ ...defaultMarkedOptions, ...optionsOverride });
+export interface RenderMarkdownOptions {
+  noSanitize?: boolean;
 }
 
-export function renderMarkdown(str?: string): string {
-  return marked(str || '');
+export function renderMarkdown(str?: string, options?: RenderMarkdownOptions): string {
+  if (!hasInitialized) {
+    marked.setOptions({
+      pedantic: false,
+      gfm: true,
+      smartLists: true,
+      smartypants: false,
+      xhtml: false,
+    });
+    hasInitialized = true;
+  }
+
+  const html = marked(str || '');
+  if (options?.noSanitize) {
+    return html;
+  }
+
+  return sanitize(html);
 }

packages/grafana-ui/src/components/Typeahead/TypeaheadInfo.tsx

@@ -2,7 +2,7 @@ import React, { useContext } from 'react';
 import { css, cx } from 'emotion';
 
 import { CompletionItem, selectThemeVariant, ThemeContext } from '../..';
-import { GrafanaTheme, renderMarkdown, textUtil } from '@grafana/data';
+import { GrafanaTheme, renderMarkdown } from '@grafana/data';
 
 const getStyles = (theme: GrafanaTheme, height: number, visible: boolean) => {
   return {
@@ -41,7 +41,7 @@ interface Props {
 export const TypeaheadInfo: React.FC<Props> = ({ item, height }) => {
   const visible = item && !!item.documentation;
   const label = item ? item.label : '';
-  const documentation = textUtil.sanitize(renderMarkdown(item?.documentation));
+  const documentation = renderMarkdown(item?.documentation);
   const theme = useContext(ThemeContext);
   const styles = getStyles(theme, height, visible);
 

public/app/app.ts

@@ -28,7 +28,6 @@ import _ from 'lodash';
 import {
   AppEvents,
   setLocale,
-  setMarkdownOptions,
   standardEditorsRegistry,
   standardFieldConfigEditorRegistry,
   standardTransformersRegistry,
@@ -97,8 +96,6 @@ export class GrafanaApp {
     setLocale(config.bootData.user.locale);
     setTimeZoneResolver(() => config.bootData.user.timezone);
 
-    setMarkdownOptions({ sanitize: !config.disableSanitizeHtml });
-
     standardEditorsRegistry.setInit(getStandardOptionEditors);
     standardFieldConfigEditorRegistry.setInit(getStandardFieldConfigs);
     standardTransformersRegistry.setInit(getStandardTransformers);

public/app/plugins/panel/text/TextPanel.tsx

@@ -43,7 +43,8 @@ export class TextPanel extends PureComponent<Props, State> {
   }
 
   prepareMarkdown(content: string): string {
-    return renderMarkdown(this.interpolateAndSanitizeString(content));
+    // Sanitize is disabled here as we handle that after variable interpolation
+    return renderMarkdown(this.interpolateAndSanitizeString(content), { noSanitize: config.disableSanitizeHtml });
   }
 
   interpolateAndSanitizeString(content: string): string {

yarn.lock

@@ -18229,10 +18229,10 @@ markdown-to-jsx@^6.11.4:
     prop-types "^15.6.2"
     unquote "^1.1.0"
 
-marked@1.1.1:
-  version "1.1.1"
-  resolved "https://registry.yarnpkg.com/marked/-/marked-1.1.1.tgz#e5d61b69842210d5df57b05856e0c91572703e6a"
-  integrity sha512-mJzT8D2yPxoPh7h0UXkB+dBj4FykPJ2OIfxAWeIHrvoHDkFxukV/29QxoFQoPM6RLEwhIFdJpmKBlqVM3s2ZIw==
+marked@1.2.2:
+  version "1.2.2"
+  resolved "https://registry.yarnpkg.com/marked/-/marked-1.2.2.tgz#5d77ffb789c4cb0ae828bfe76250f7140b123f70"
+  integrity sha512-5jjKHVl/FPo0Z6ocP3zYhKiJLzkwJAw4CZoLjv57FkvbUuwOX4LIBBGGcXjAY6ATcd1q9B8UTj5T9Umauj0QYQ==
 
 marked@^0.3.12:
   version "0.3.19"