Read Only Tenant Mode (#4498) (#5436)

* merge conflict resolved
* Restore config/opensearch_dashboards.yml
* Fix capabilities tsc
* docs: read only tenant mode
* feat: introduce security service in core and readonly service
* fix: adds securityServiceMock
* feat: adds tests and default default readonly service
* docs: fill up docs for read only tenant mode

---------

Signed-off-by: jakubp-eliatra <[email protected]>
Signed-off-by: Kajetan Nobel <[email protected]>
Signed-off-by: Kajetan Nobel <[email protected]>
Co-authored-by: jakubp-eliatra <[email protected]>
Co-authored-by: Kajetan Nobel <[email protected]>
Co-authored-by: Peter Nied <[email protected]>
Co-authored-by: Ashwin P Chandran <[email protected]>
Co-authored-by: Kajetan Nobel <[email protected]>
Co-authored-by: Anan Zhuang <[email protected]>
(cherry picked from commit abc97ea)
Signed-off-by: github-actions[bot] <github-actions[bot]@users.noreply.github.com>

# Conflicts:
#	CHANGELOG.md

Co-authored-by: github-actions[bot] <github-actions[bot]@users.noreply.github.com>

DEVELOPER_GUIDE.md

@@ -250,6 +250,12 @@ Options:
 $ yarn opensearch snapshot --version 2.2.0 -E cluster.name=test -E path.data=/tmp/opensearch-data --P org.opensearch.plugin:test-plugin:2.2.0.0 --P file:/home/user/opensearch-test-plugin-2.2.0.0.zip
 ```
 
+#### Read Only capabilities
+
+_This feature will only work if you have the [`security` plugin](https://github.com/opensearch-project/security) installed on your OpenSearch cluster with https/authentication enabled._
+
+Please follow the design described in [the docs](https://github.com/opensearch-project/OpenSearch/blob/main/docs/capabilities/read_only_mode.md#design)
+
 ### Alternative - Run OpenSearch from tarball
 
 If you would like to run OpenSearch from the tarball, you'll need to download the minimal distribution, install it, and then run the executable. (You'll also need Java installed and the `JAVA_HOME` environmental variable set - see [OpenSearch developer guide](https://github.com/opensearch-project/OpenSearch/blob/main/DEVELOPER_GUIDE.md#install-prerequisites) for details).

docs/capabilities/read_only_mode.md

@@ -0,0 +1,80 @@
+# Read-only Mode
+
+There are two distinct functionalities for "read-only" access in Dashboards. One of them is associated with roles and one is associated with tenants. Regarding the first one, the Dashboards Security plugin contains a feature of hiding all plugin navigation links except Dashboards and Visualizations when the logged-in user has a certain role (more about it in [Read-only Role](#read-only-role)).
+
+The second one is limiting Dashboards access rights via assigning a specific role to a tenant (therefore, making a tenant read-only). Due to past issues and the deprecation of the first functionality, using read-only tenants is now the recommended way to limit users' access to Dashboards.
+
+## Design
+
+Whenever a plugin registers capabilities that should be limited (in other words, set to false) for read-only tenants, such capabilities should be registered through `registerSwitcher` with using method `core.security.readonlyService().hideForReadonly()`
+
+### Example
+
+```ts
+public setup(core: CoreSetup) {
+  core.capabilities.registerProvider({
+    myAwesomePlugin: {
+      show: true,
+      save: true,
+      delete: true,
+    }
+  });
+
+  core.capabilities.registerSwitcher(async (request, capabilites) => {
+    return await core.security.readonlyService().hideForReadonly(request, capabilites, {
+      myAwesomePlugin: {
+        save: false,
+        delete: false,
+      },
+    });
+  });
+}
+```
+
+In this case, we might assume that a plugin relies on the `save` and `delete` capabilities to limit changes somewhere in the UI. Therefore, those capabilities are processed through `registerSwitcher`, they will be set to `false` whenever a read-only tenant is accessed.
+
+If `registerSwitcher` will try to provide or remove capabilites when invoking the switcher will be ignored.
+
+*In case of a disabled / not installed `security` plugin changes will be never applied to a capabilites.*
+
+## Requirements
+
+This feature will only work if you have the [`security` plugin](https://github.com/opensearch-project/security) installed on your OpenSearch cluster with https/authentication enabled.
+
+## Read-only Role
+
+The role is called `kibana_read_only` by default, but the name can be changed using the dashboard config option `opensearch_security.readonly_mode.roles`. One big issue with this feature is that the backend site of a Dashboard Security plugin is completely unaware of it. Thus, users in this mode still have write access to the Dashboards saved objects via the API as the implementation effectively hides everything except the Dashboards and Visualization plugins.
+
+**We highly do not recommend using it!**
+
+For more context, see [this group issues of problems connected with read-only roles](https://github.com/opensearch-project/security/issues/2701).
+
+### Usage
+
+1. Go to `Management > Security > Internal users`
+2. Create or select an already existing user
+3. Add a new `Backend role` called `kibana_read_only` (or use name used in `opensearch_security.readonly_mode.roles`)
+4. Save changes
+
+## Read-only Tenant (recommended)
+
+Dashboards Security plugin recognizes the selection of read-only tenant after logging in and sets the capabilities associated with write access or showing write controls to false for a variety of plugins. This can be easily checked for example by trying to re-arrange some visualizations on Dashboards. Such action will be resulting in a 403 error due to limited read-only access.
+
+### Usage
+
+1. Prepare tenant:
+    * Use an existing tenant or create a new one in `Management > Security > Tenants`
+2. Prepare role:
+    * Go to `Management > Security > Roles`
+    * Use an existing role or create a new one
+    * Fill **index permissions** with:
+        * `indices:data/read/search`
+        * `indices:data/read/get`
+    * Add new **tenant permission** with:
+        * your name of the tenant
+        * read only
+3. Assign a role to a user:
+    * Go to role
+    * Click the tab `Mapped users`
+    * Click `Manage mapping`
+    * In `Users` select the user that will be affected

src/core/public/application/application_service.tsx

@@ -32,6 +32,7 @@ import React from 'react';
 import { BehaviorSubject, Observable, Subject, Subscription } from 'rxjs';
 import { map, shareReplay, takeUntil, distinctUntilChanged, filter } from 'rxjs/operators';
 import { createBrowserHistory, History } from 'history';
+import { RecursiveReadonly } from '@osd/utility-types';
 
 import { MountPoint } from '../types';
 import { HttpSetup, HttpStart } from '../http';
@@ -73,7 +74,7 @@ interface StartDeps {
 // Mount functions with two arguments are assumed to expect deprecated `context` object.
 const isAppMountDeprecated = (mount: (...args: any[]) => any): mount is AppMountDeprecated =>
   mount.length === 2;
-function filterAvailable<T>(m: Map<string, T>, capabilities: Capabilities) {
+function filterAvailable<T>(m: Map<string, T>, capabilities: RecursiveReadonly<Capabilities>) {
   return new Map(
     [...m].filter(
       ([id]) => capabilities.navLinks[id] === undefined || capabilities.navLinks[id] === true

src/core/server/index.ts

@@ -76,6 +76,7 @@ import { StatusServiceSetup } from './status';
 import { Auditor, AuditTrailSetup, AuditTrailStart } from './audit_trail';
 import { AppenderConfigType, appendersSchema, LoggingServiceSetup } from './logging';
 import { CoreUsageDataStart } from './core_usage_data';
+import { SecurityServiceSetup } from './security/types';
 
 // Because of #79265 we need to explicity import, then export these types for
 // scripts/telemetry_check.js to work as expected
@@ -437,6 +438,8 @@ export interface CoreSetup<TPluginsStart extends object = object, TStart = unkno
   metrics: MetricsServiceSetup;
   /** {@link SavedObjectsServiceSetup} */
   savedObjects: SavedObjectsServiceSetup;
+  /** {@link SecurityServiceSetup} */
+  security: SecurityServiceSetup;
   /** {@link StatusServiceSetup} */
   status: StatusServiceSetup;
   /** {@link UiSettingsServiceSetup} */

src/core/server/internal_types.ts

@@ -48,6 +48,7 @@ import { InternalStatusServiceSetup } from './status';
 import { AuditTrailSetup, AuditTrailStart } from './audit_trail';
 import { InternalLoggingServiceSetup } from './logging';
 import { CoreUsageDataStart } from './core_usage_data';
+import { InternalSecurityServiceSetup } from './security/types';
 
 /** @internal */
 export interface InternalCoreSetup {
@@ -64,6 +65,7 @@ export interface InternalCoreSetup {
   auditTrail: AuditTrailSetup;
   logging: InternalLoggingServiceSetup;
   metrics: InternalMetricsServiceSetup;
+  security: InternalSecurityServiceSetup;
 }
 
 /**

src/core/server/legacy/legacy_service.test.ts

@@ -60,6 +60,7 @@ import { statusServiceMock } from '../status/status_service.mock';
 import { auditTrailServiceMock } from '../audit_trail/audit_trail_service.mock';
 import { loggingServiceMock } from '../logging/logging_service.mock';
 import { metricsServiceMock } from '../metrics/metrics_service.mock';
+import { securityServiceMock } from '../security/security_service.mock';
 
 const MockOsdServer: jest.Mock<OsdServer> = OsdServer as any;
 
@@ -108,6 +109,7 @@ beforeEach(() => {
       auditTrail: auditTrailServiceMock.createSetupContract(),
       logging: loggingServiceMock.createInternalSetupContract(),
       metrics: metricsServiceMock.createInternalSetupContract(),
+      security: securityServiceMock.createSetupContract(),
     },
     plugins: { 'plugin-id': 'plugin-value' },
     uiPlugins: {

src/core/server/legacy/legacy_service.ts

@@ -301,6 +301,7 @@ export class LegacyService implements CoreService {
       },
       auditTrail: setupDeps.core.auditTrail,
       getStartServices: () => Promise.resolve([coreStart, startDeps.plugins, {}]),
+      security: setupDeps.core.security,
     };
 
     // eslint-disable-next-line @typescript-eslint/no-var-requires

src/core/server/mocks.ts

@@ -50,6 +50,7 @@ import { environmentServiceMock } from './environment/environment_service.mock';
 import { statusServiceMock } from './status/status_service.mock';
 import { auditTrailServiceMock } from './audit_trail/audit_trail_service.mock';
 import { coreUsageDataServiceMock } from './core_usage_data/core_usage_data_service.mock';
+import { securityServiceMock } from './security/security_service.mock';
 
 export { configServiceMock } from './config/mocks';
 export { httpServerMock } from './http/http_server.mocks';
@@ -157,6 +158,7 @@ function createCoreSetupMock({
     getStartServices: jest
       .fn<Promise<[ReturnType<typeof createCoreStartMock>, object, any]>, []>()
       .mockResolvedValue([createCoreStartMock(), pluginStartDeps, pluginStartContract]),
+    security: securityServiceMock.createSetupContract(),
   };
 
   return mock;
@@ -192,6 +194,7 @@ function createInternalCoreSetupMock() {
     auditTrail: auditTrailServiceMock.createSetupContract(),
     logging: loggingServiceMock.createInternalSetupContract(),
     metrics: metricsServiceMock.createInternalSetupContract(),
+    security: securityServiceMock.createSetupContract(),
   };
   return setupDeps;
 }

src/core/server/plugins/plugin_context.ts

@@ -220,6 +220,7 @@ export function createPluginSetupContext<TPlugin, TPluginDependencies>(
     },
     getStartServices: () => plugin.startDependencies,
     auditTrail: deps.auditTrail,
+    security: deps.security,
   };
 }
 

src/core/server/security/readonly_service.test.ts

@@ -0,0 +1,34 @@
+/*
+ * Copyright OpenSearch Contributors
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
+import { OpenSearchDashboardsRequest } from '../index';
+import { ReadonlyService } from './readonly_service';
+import { httpServerMock } from '../http/http_server.mocks';
+
+describe('ReadonlyService', () => {
+  let readonlyService: ReadonlyService;
+  let request: OpenSearchDashboardsRequest;
+
+  beforeEach(() => {
+    readonlyService = new ReadonlyService();
+    request = httpServerMock.createOpenSearchDashboardsRequest();
+  });
+
+  it('isReadonly returns false by default', () => {
+    expect(readonlyService.isReadonly(request)).resolves.toBeFalsy();
+  });
+
+  it('hideForReadonly merges capabilites to hide', () => {
+    readonlyService.isReadonly = jest.fn(() => new Promise(() => true));
+    const result = readonlyService.hideForReadonly(
+      request,
+      { foo: { show: true } },
+      { foo: { show: false } }
+    );
+
+    expect(readonlyService.isReadonly).toBeCalledTimes(1);
+    expect(result).resolves.toEqual({ foo: { show: false } });
+  });
+});

src/core/server/security/readonly_service.ts

@@ -0,0 +1,22 @@
+/*
+ * Copyright OpenSearch Contributors
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
+import { merge } from 'lodash';
+import { OpenSearchDashboardsRequest, Capabilities } from '../index';
+import { IReadOnlyService } from './types';
+
+export class ReadonlyService implements IReadOnlyService {
+  async isReadonly(request: OpenSearchDashboardsRequest): Promise<boolean> {
+    return false;
+  }
+
+  async hideForReadonly(
+    request: OpenSearchDashboardsRequest,
+    capabilites: Partial<Capabilities>,
+    hideCapabilities: Partial<Capabilities>
+  ): Promise<Partial<Capabilities>> {
+    return (await this.isReadonly(request)) ? merge(capabilites, hideCapabilities) : capabilites;
+  }
+}

src/core/server/security/security_service.mock.ts

@@ -0,0 +1,18 @@
+/*
+ * Copyright OpenSearch Contributors
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
+import { SecurityServiceSetup } from './types';
+
+const createSetupContractMock = () => {
+  const setupContract: jest.Mocked<SecurityServiceSetup> = {
+    readonlyService: jest.fn(),
+    registerReadonlyService: jest.fn(),
+  };
+  return setupContract;
+};
+
+export const securityServiceMock = {
+  createSetupContract: createSetupContractMock,
+};

src/core/server/security/security_service.test.ts

@@ -0,0 +1,45 @@
+/*
+ * Copyright OpenSearch Contributors
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
+import { OpenSearchDashboardsRequest } from '../index';
+import { mockCoreContext } from '../core_context.mock';
+import { SecurityService } from './security_service';
+import { httpServerMock } from '../http/http_server.mocks';
+import { IReadOnlyService } from './types';
+
+describe('SecurityService', () => {
+  let securityService: SecurityService;
+  let request: OpenSearchDashboardsRequest;
+
+  beforeEach(() => {
+    const coreContext = mockCoreContext.create();
+    securityService = new SecurityService(coreContext);
+    request = httpServerMock.createOpenSearchDashboardsRequest();
+  });
+
+  afterEach(() => {
+    jest.clearAllMocks();
+  });
+
+  describe('#readonlyService', () => {
+    it("uses core's readonly service by default", () => {
+      const setupContext = securityService.setup();
+      expect(setupContext.readonlyService().isReadonly(request)).resolves.toBeFalsy();
+    });
+
+    it('registers custom readonly service and it uses it', () => {
+      const setupContext = securityService.setup();
+      const readonlyServiceMock: jest.Mocked<IReadOnlyService> = {
+        isReadonly: jest.fn(),
+        hideForReadonly: jest.fn(),
+      };
+
+      setupContext.registerReadonlyService(readonlyServiceMock);
+      setupContext.readonlyService().isReadonly(request);
+
+      expect(readonlyServiceMock.isReadonly).toBeCalledTimes(1);
+    });
+  });
+});

src/core/server/security/security_service.ts

@@ -0,0 +1,43 @@
+/*
+ * Copyright OpenSearch Contributors
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
+import { CoreService } from '../../types';
+import { IReadOnlyService, InternalSecurityServiceSetup } from './types';
+import { CoreContext } from '../core_context';
+import { Logger } from '../logging';
+import { ReadonlyService } from './readonly_service';
+
+export class SecurityService implements CoreService<InternalSecurityServiceSetup> {
+  private logger: Logger;
+  private readonlyService: IReadOnlyService;
+
+  constructor(coreContext: CoreContext) {
+    this.logger = coreContext.logger.get('security-service');
+    this.readonlyService = new ReadonlyService();
+  }
+
+  public setup() {
+    this.logger.debug('Setting up Security service');
+
+    const securityService = this;
+
+    return {
+      registerReadonlyService(service: IReadOnlyService) {
+        securityService.readonlyService = service;
+      },
+      readonlyService() {
+        return securityService.readonlyService;
+      },
+    };
+  }
+
+  public start() {
+    this.logger.debug('Starting plugin');
+  }
+
+  public stop() {
+    this.logger.debug('Stopping plugin');
+  }
+}

src/core/server/security/types.ts

@@ -0,0 +1,22 @@
+/*
+ * Copyright OpenSearch Contributors
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
+import { Capabilities, OpenSearchDashboardsRequest } from '../index';
+
+export interface SecurityServiceSetup {
+  registerReadonlyService(service: IReadOnlyService): void;
+  readonlyService(): IReadOnlyService;
+}
+
+export type InternalSecurityServiceSetup = SecurityServiceSetup;
+
+export interface IReadOnlyService {
+  isReadonly(request: OpenSearchDashboardsRequest): Promise<boolean>;
+  hideForReadonly(
+    request: OpenSearchDashboardsRequest,
+    capabilites: Capabilities,
+    hideCapabilities: Partial<Capabilities>
+  ): Promise<Partial<Capabilities>>;
+}