Drilldown allow list (#85779)

* feat: 🎸 add ROW_CLICK_TRIGGER

* feat: 🎸 wire row click event to UI Actions trigger in Lens

* feat: 🎸 add row click trigger to url drilldown

* feat: 🎸 add datatable to row click context

* feat: 🎸 pass in row index in row click trigger context

* feat: 🎸 add columns to row click trigger context

* feat: 🎸 fill values and keys event scope array

* feat: 🎸 generate correct row scope variables

* fix: 🐛 report triggers from lens embeddable

* feat: 🎸 add sample preview for row click trigger

* feat: 🎸 remove url drilldown preview box

* chore: 🤖 remove mock variable generation functions

* feat: 🎸 generate context and global variable lists

* feat: 🎸 preview event variable list

* feat: 🎸 show empty url error on blur

* feat: 🎸 add ability to always show popup for executed actions

* refactor: 💡 rename multiple action execution method

* fix: 🐛 don't add separator befor group on no main items

* feat: 🎸 wire in uiActions service into datatable renderer

* feat: 🎸 check each row if it has compatible row click actions

* feat: 🎸 allow passing data to expression renderer

* feat: 🎸 add isEmbeddable helper

* feat: 🎸 pass embeddable to lens table renderer

* feat: 🎸 hide lens table row actions which are empty

* feat: 🎸 re-render lens embeddable when dynamic actions chagne

* feat: 🎸 hide actions column if there are no row actions

* feat: 🎸 re-render lens embeddable on view mode chagne

* fix: 🐛 fix TypeScript errors

* chore: 🤖 fix TypeScript errors

* docs: ✏️ update auto-generated docs

* feat: 🎸 add hasCompatibleActions to expression layer

* feat: 🎸 remove "data" from expression renderer handlers

* fix: 🐛 fix TypeScript errors

* test: 💍 fix Jest tests

* docs: ✏️ update autogenerated docs

* fix: 🐛 wrap event payload into data

* test: 💍 add "alwaysShowPopup" test

* chore: 🤖 add comment requested in review

https://github.com/elastic/kibana/pull/83167#discussion_r537340216

* test: 💍 add hasCompatibleActions test

* test: 💍 add datatable renderer test

* test: 💍 add Lens embeddable input change tests

* test: 💍 add embeddable row click test

* fix: 🐛 add url validation

* test: 💍 add url drilldown tests

* docs: ✏️ remove url drilldown preview from docs

* docs: ✏️ remove preview from url templating

* docs: ✏️ add row click description

* chore: 🤖 move 36.5 KB bundle balance to url_drilldown

* test: 💍 simplify test case

* feat: 🎸 check if external URL is valid before redirecting user

* test: 💍 check for external URL validity

* feat: 🎸 check if external URL is allowed in exec and getHref

* test: 💍 fix test import

x-pack/plugins/drilldowns/url_drilldown/public/lib/url_drilldown.test.ts

@@ -4,9 +4,11 @@
  * you may not use this file except in compliance with the Elastic License.
  */
 
+import { IExternalUrl } from 'src/core/public';
 import { UrlDrilldown, ActionContext, Config } from './url_drilldown';
 import { IEmbeddable } from '../../../../../../src/plugins/embeddable/public/lib/embeddables';
 import { DatatableColumnType } from '../../../../../../src/plugins/expressions/common';
+import { of } from '../../../../../../src/plugins/kibana_utils';
 import { createPoint, rowClickData, TestEmbeddable } from './test/data';
 import {
   VALUE_CLICK_TRIGGER,
@@ -59,13 +61,27 @@ const mockEmbeddable = ({
 
 const mockNavigateToUrl = jest.fn(() => Promise.resolve());
 
-describe('UrlDrilldown', () => {
-  const urlDrilldown = new UrlDrilldown({
+class TextExternalUrl implements IExternalUrl {
+  constructor(private readonly isCorrect: boolean = true) {}
+
+  public validateUrl(url: string): URL | null {
+    return this.isCorrect ? new URL(url) : null;
+  }
+}
+
+const createDrilldown = (isExternalUrlValid: boolean = true) => {
+  const drilldown = new UrlDrilldown({
+    externalUrl: new TextExternalUrl(isExternalUrlValid),
     getGlobalScope: () => ({ kibanaUrl: 'http://localhost:5601/' }),
     getSyntaxHelpDocsLink: () => 'http://localhost:5601/docs',
     getVariablesHelpDocsLink: () => 'http://localhost:5601/docs',
     navigateToUrl: mockNavigateToUrl,
   });
+  return drilldown;
+};
+
+describe('UrlDrilldown', () => {
+  const urlDrilldown = createDrilldown();
 
   test('license', () => {
     expect(urlDrilldown.minimalLicense).toBe('gold');
@@ -125,6 +141,30 @@ describe('UrlDrilldown', () => {
 
       await expect(urlDrilldown.isCompatible(config, context)).resolves.toBe(false);
     });
+
+    test('not compatible if external URL is denied', async () => {
+      const drilldown1 = createDrilldown(true);
+      const drilldown2 = createDrilldown(false);
+      const config: Config = {
+        url: {
+          template: `https://elasti.co/?{{event.value}}&{{rison context.panel.query}}`,
+        },
+        openInNewTab: false,
+      };
+
+      const context: ActionContext = {
+        data: {
+          data: mockDataPoints,
+        },
+        embeddable: mockEmbeddable,
+      };
+
+      const result1 = await drilldown1.isCompatible(config, context);
+      const result2 = await drilldown2.isCompatible(config, context);
+
+      expect(result1).toBe(true);
+      expect(result2).toBe(false);
+    });
   });
 
   describe('getHref & execute', () => {
@@ -173,6 +213,42 @@ describe('UrlDrilldown', () => {
       await expect(urlDrilldown.execute(config, context)).rejects.toThrowError();
       expect(mockNavigateToUrl).not.toBeCalled();
     });
+
+    test('should throw on denied external URL', async () => {
+      const drilldown1 = createDrilldown(true);
+      const drilldown2 = createDrilldown(false);
+      const config: Config = {
+        url: {
+          template: `https://elasti.co/?{{event.value}}&{{rison context.panel.query}}`,
+        },
+        openInNewTab: false,
+      };
+
+      const context: ActionContext = {
+        data: {
+          data: mockDataPoints,
+        },
+        embeddable: mockEmbeddable,
+      };
+
+      const url = await drilldown1.getHref(config, context);
+      await drilldown1.execute(config, context);
+
+      expect(url).toMatchInlineSnapshot(`"https://elasti.co/?test&(language:kuery,query:test)"`);
+      expect(mockNavigateToUrl).toBeCalledWith(url);
+
+      const [, error1] = await of(drilldown2.getHref(config, context));
+      const [, error2] = await of(drilldown2.execute(config, context));
+
+      expect(error1).toBeInstanceOf(Error);
+      expect(error1.message).toMatchInlineSnapshot(
+        `"External URL [https://elasti.co/?test&(language:kuery,query:test)] was denied by ExternalUrl service. You can configure external URL policies using \\"externalUrl.policy\\" setting in kibana.yml."`
+      );
+      expect(error2).toBeInstanceOf(Error);
+      expect(error2.message).toMatchInlineSnapshot(
+        `"External URL [https://elasti.co/?test&(language:kuery,query:test)] was denied by ExternalUrl service. You can configure external URL policies using \\"externalUrl.policy\\" setting in kibana.yml."`
+      );
+    });
   });
 
   describe('variables', () => {

x-pack/plugins/drilldowns/url_drilldown/public/lib/url_drilldown.tsx

@@ -6,6 +6,7 @@
 
 import React from 'react';
 import { getFlattenedObject } from '@kbn/std';
+import { IExternalUrl } from 'src/core/public';
 import { reactToUiComponent } from '../../../../../../src/plugins/kibana_react/public';
 import {
   ChartActionContext,
@@ -31,6 +32,7 @@ import { getPanelVariables, getEventScope, getEventVariableList } from './url_dr
 import { txtUrlDrilldownDisplayName } from './i18n';
 
 interface UrlDrilldownDeps {
+  externalUrl: IExternalUrl;
   getGlobalScope: () => UrlDrilldownGlobalScope;
   navigateToUrl: (url: string) => Promise<void>;
   getSyntaxHelpDocsLink: () => string;
@@ -55,7 +57,7 @@ const URL_DRILLDOWN = 'URL_DRILLDOWN';
 export class UrlDrilldown implements Drilldown<Config, UrlTrigger, ActionFactoryContext> {
   public readonly id = URL_DRILLDOWN;
 
-  constructor(private deps: UrlDrilldownDeps) {}
+  constructor(private readonly deps: UrlDrilldownDeps) {}
 
   public readonly order = 8;
 
@@ -109,18 +111,37 @@ export class UrlDrilldown implements Drilldown<Config, UrlTrigger, ActionFactory
       console.warn(
         `UrlDrilldown [${config.url.template}] is not valid. Error [${error}]. Skipping execution.`
       );
+      return false;
     }
 
-    return Promise.resolve(isValid);
+    const url = this.buildUrl(config, context);
+    const validUrl = this.deps.externalUrl.validateUrl(url);
+    if (!validUrl) {
+      return false;
+    }
+
+    return true;
   };
 
-  public readonly getHref = async (config: Config, context: ActionContext) => {
-    const scope = this.getRuntimeVariables(context);
-    return urlDrilldownCompileUrl(config.url.template, scope);
+  private buildUrl(config: Config, context: ActionContext): string {
+    const url = urlDrilldownCompileUrl(config.url.template, this.getRuntimeVariables(context));
+    return url;
+  }
+
+  public readonly getHref = async (config: Config, context: ActionContext): Promise<string> => {
+    const url = this.buildUrl(config, context);
+    const validUrl = this.deps.externalUrl.validateUrl(url);
+    if (!validUrl) {
+      throw new Error(
+        `External URL [${url}] was denied by ExternalUrl service. ` +
+          `You can configure external URL policies using "externalUrl.policy" setting in kibana.yml.`
+      );
+    }
+    return url;
   };
 
   public readonly execute = async (config: Config, context: ActionContext) => {
-    const url = urlDrilldownCompileUrl(config.url.template, this.getRuntimeVariables(context));
+    const url = await this.getHref(config, context);
     if (config.openInNewTab) {
       window.open(url, '_blank', 'noopener');
     } else {

x-pack/plugins/drilldowns/url_drilldown/public/plugin.ts

@@ -38,6 +38,7 @@ export class UrlDrilldownPlugin
     const startServices = createStartServicesGetter(core.getStartServices);
     plugins.uiActionsEnhanced.registerDrilldown(
       new UrlDrilldown({
+        externalUrl: core.http.externalUrl,
         getGlobalScope: urlDrilldownGlobalScopeProvider({ core }),
         navigateToUrl: (url: string) =>
           core.getStartServices().then(([{ application }]) => application.navigateToUrl(url)),