mirror of
https://github.com/vector-im/element-call.git
synced 2026-10-16 23:45:50 +00:00
Move SFU authentication into livekit/auth and choose the endpoint by role
The OpenID flow moves to src/livekit/auth/openID.ts with the SFU config types in a sibling file, takes an options object, and replaces the MatrixRTC mode with the role we take on the transport plus the session's slot ID instead of a hard-coded m.call#ROOM. This changes behaviour: publishers on a livekit_service_url transport always use the legacy /sfu/get endpoint, so that subscribers can predict their user:device participant identity, and subscribers always use the default /get_token endpoint. The MatrixRTC mode no longer influences which endpoint is used.
This commit is contained in:
Robin
@@ -0,0 +1,9 @@
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/*
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Copyright 2026 Element Creations Ltd.
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SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-Element-Commercial
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Please see LICENSE in the repository root for full details.
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*/
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export * from "./openID";
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export type * from "./types";
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@@ -0,0 +1,200 @@
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/*
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Copyright 2025 Element Creations Ltd.
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SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-Element-Commercial
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Please see LICENSE in the repository root for full details.
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*/
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import {
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beforeEach,
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afterEach,
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describe,
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expect,
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it,
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type MockedObject,
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vitest,
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} from "vitest";
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import fetchMock from "fetch-mock";
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import { MatrixError } from "matrix-js-sdk";
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import {
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getSFUConfig,
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type GetSFUConfigParams,
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type ClientOpenIDParts,
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} from "./openID";
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import { testJWTToken } from "../../utils/test-fixtures";
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import { ownMemberMock } from "../../utils/test";
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import { FailToGetOpenIdToken } from "../../utils/errors";
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import { logger } from "matrix-js-sdk/lib/logger";
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const serviceUrl = "https://sfu.example.org";
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const delayParams = {
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delayEndpointBaseUrl: "https://matrix.homeserverserver.org",
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delayId: "mock_delay_id",
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};
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describe("getSFUConfig", () => {
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let matrixClient: MockedObject<ClientOpenIDParts>;
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let params: GetSFUConfigParams;
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beforeEach(() => {
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fetchMock.catch(404);
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matrixClient = { getOpenIdToken: vitest.fn() };
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params = {
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client: matrixClient,
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membership: ownMemberMock,
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serviceUrl: "https://sfu.example.org",
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roomId: "!example_room_id",
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slotId: "m.call#ROOM",
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role: "publisher",
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logger,
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};
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});
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afterEach(async () => {
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void (await fetchMock.flush());
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vitest.clearAllMocks();
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fetchMock.reset();
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});
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it("should handle fetching a token", async () => {
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fetchMock.post("https://sfu.example.org/sfu/get", () => {
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return {
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status: 200,
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body: { url: serviceUrl, jwt: testJWTToken },
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};
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});
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const config = await getSFUConfig(params);
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expect(config).toEqual({
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jwt: testJWTToken,
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url: serviceUrl,
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livekitIdentity: "@me:example.org:ABCDEF",
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livekitAlias: "!example_room_id",
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});
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});
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it("should fail if the SFU errors", async () => {
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fetchMock.post("https://sfu.example.org/sfu/get", () => {
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return {
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status: 500,
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body: {
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errcode: "M_LOOKUP_FAILED",
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error: "Failed to look up user info from homeserver",
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},
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};
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});
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try {
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await getSFUConfig(params);
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} catch (ex: unknown) {
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expect(ex).toBeInstanceOf(FailToGetOpenIdToken);
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expect((ex as FailToGetOpenIdToken).cause).toBeInstanceOf(MatrixError);
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const mxError = (ex as Error).cause as MatrixError;
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expect(mxError.message).toEqual(
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"MatrixError: [500] Failed to look up user info from homeserver",
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);
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return;
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}
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expect.fail("Expected test to throw;");
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});
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it("should retry without delay params if the JWT service legacy endpoint returns M_BAD_JSON 400", async () => {
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let callCount = 0;
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fetchMock.post(
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"https://sfu.example.org/sfu/get",
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(url, opts) => {
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callCount++;
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const body = JSON.parse(opts.body as string);
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// First call: check if it has delay parts and return 400
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if (callCount === 1) {
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expect(body).toHaveProperty("delay_id", "mock_delay_id");
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return {
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status: 400,
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body: { errcode: "M_BAD_JSON", error: "Unsupported parameters" },
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};
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}
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// Second call: check if delay parts were stripped and return success
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expect(body).not.toHaveProperty("delay_id");
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expect(body).not.toHaveProperty("delay_timeout");
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expect(body).not.toHaveProperty("delay_cs_api_url");
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return {
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status: 200,
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body: { url: serviceUrl, jwt: testJWTToken },
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};
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},
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{ overwriteRoutes: true },
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);
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// Note: Assuming getSFUConfig eventually calls getLiveKitJWT
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const config = await getSFUConfig({ ...params, ...delayParams });
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expect(config.jwt).toBe(testJWTToken);
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expect(callCount).toBe(2);
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});
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it("should successfully send delay parameters to the JWT service legacy endpoint", async () => {
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fetchMock.post(
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"https://sfu.example.org/sfu/get",
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(url, opts) => {
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const body = JSON.parse(opts.body as string);
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// Verify, that the request contains the expected delay parameters
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if (
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body.delay_id === "mock_delay_id" &&
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body.delay_timeout === 3600000 &&
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body.delay_cs_api_url === "https://matrix.homeserverserver.org"
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) {
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return {
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status: 200,
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body: { url: serviceUrl, jwt: testJWTToken },
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};
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}
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return {
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status: 400,
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body: { error: "Missing expected delay params" },
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};
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},
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{ overwriteRoutes: true },
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);
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const config = await getSFUConfig({ ...params, ...delayParams });
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// Prüfe das Ergebnis
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expect(config).toMatchObject({
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jwt: testJWTToken,
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url: serviceUrl,
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});
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});
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it("should retry fetching the openid token", async () => {
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let count = 0;
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matrixClient.getOpenIdToken.mockImplementation(async () => {
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count++;
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if (count < 2) {
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throw Error("Test failure");
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}
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return Promise.resolve({
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token_type: "Bearer",
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access_token: "foobar",
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matrix_server_name: "example.org",
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expires_in: 30,
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});
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});
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fetchMock.post("https://sfu.example.org/sfu/get", () => {
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return {
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status: 200,
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body: { url: serviceUrl, jwt: testJWTToken },
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};
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});
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const config = await getSFUConfig({ ...params, ...delayParams });
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expect(config).toEqual({
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jwt: testJWTToken,
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url: serviceUrl,
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livekitIdentity: "@me:example.org:ABCDEF",
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livekitAlias: "!example_room_id",
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});
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});
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});
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@@ -0,0 +1,262 @@
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/*
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Copyright 2023, 2024 New Vector Ltd.
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SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-Element-Commercial
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Please see LICENSE in the repository root for full details.
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*/
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import {
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type IOpenIDToken,
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type MatrixClient,
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parseErrorResponse,
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} from "matrix-js-sdk";
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import { type CallMembershipIdentityParts } from "matrix-js-sdk/lib/matrixrtc/EncryptionManager";
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import { type Logger } from "matrix-js-sdk/lib/logger";
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import { FailToGetOpenIdToken } from "../../utils/errors";
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import { doNetworkOperationWithRetry } from "../../utils/matrix";
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import { Config } from "../../config/Config";
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import { extractFullConfigFromToken, type SFUConfig } from "./types";
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// The bits we need from MatrixClient
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export type ClientOpenIDParts = Pick<MatrixClient, "getOpenIdToken">;
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export interface GetSFUConfigParams {
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client: ClientOpenIDParts;
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/**
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* Data identifying the local user's session membership.
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*/
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membership: CallMembershipIdentityParts;
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/**
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* The base URL of the LiveKit JWT service.
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*/
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serviceUrl: string;
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/**
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* The ID of the Matrix room in which the session takes place.
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*/
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roomId: string;
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/**
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* The ID of the MatrixRTC slot in which the session takes place.
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*/
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slotId: string;
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/**
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* Whether we want to publish or only subscribe on the {@link transport}.
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*/
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role: "publisher" | "subscriber";
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/**
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* The base URL of the Matrix homeserver, for delayed leave delegation.
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*/
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delayEndpointBaseUrl?: string;
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/**
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* The delay ID of the leave event to be delegated to the JWT service.
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*/
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delayId?: string;
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logger: Logger;
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}
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/**
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* Gets an {@link SFUConfig} appropriate for connecting to the SFU behind a
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* given service URL, using the legacy OpenID flow.
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* @throws {@link FailToGetOpenIdToken}
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*/
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export async function getSFUConfig({
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client,
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membership,
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serviceUrl,
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roomId,
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slotId,
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role,
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delayEndpointBaseUrl,
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delayId,
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logger,
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}: GetSFUConfigParams): Promise<SFUConfig> {
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let openIdToken: IOpenIDToken;
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try {
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openIdToken = await doNetworkOperationWithRetry(async () =>
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client.getOpenIdToken(),
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);
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} catch (error) {
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throw new FailToGetOpenIdToken(
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error instanceof Error ? error : new Error("Unknown error"),
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);
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}
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logger.debug("Got openID token", openIdToken);
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let sfuConfig: { url: string; jwt: string } | undefined;
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let endpoint: "default" | "legacy";
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if (role === "publisher") {
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// When publishing a legacy transport (one with a `livekit_service_url`),
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// subscribers will expect our participant identity to use the legacy
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// `@user_id:device_id` format. Only the legacy JWT service endpoint assigns
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// identities in this format, so we must use it.
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endpoint = "legacy";
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} else {
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// Use the default endpoint as it affords us slightly better metadata
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// protection (pseudonymous participant identities).
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endpoint = "default";
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}
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try {
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logger.info(
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`Trying to get JWT with ${endpoint} endpoint for focus ${serviceUrl}...`,
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);
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sfuConfig = await (
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endpoint === "legacy" ? getLiveKitJWTLegacy : getLiveKitJWT
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)(
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membership,
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serviceUrl,
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roomId,
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slotId,
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openIdToken,
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delayEndpointBaseUrl,
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delayId,
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);
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logger.info(`Got JWT from call's active focus URL.`);
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return extractFullConfigFromToken(sfuConfig);
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} catch (e) {
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logger.error(`Failed fetching jwt with ${endpoint} endpoint:`, e);
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throw new FailToGetOpenIdToken(
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e instanceof Error ? e : new Error(`Unknown error ${e}`),
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);
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}
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}
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/**
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* Gets a JWT token appropriate for connecting to the SFU behind a given service
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* URL, using the legacy `/sfu/get` endpoint, which assigns us a legacy
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* (`<user_id>:<device_id>`) participant identity.
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*/
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async function getLiveKitJWTLegacy(
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membership: CallMembershipIdentityParts,
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livekitServiceURL: string,
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matrixRoomId: string,
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_slotId: string, // Unused - the legacy endpoint is from before slots existed.
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openIDToken: IOpenIDToken,
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delayEndpointBaseUrl?: string,
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delayId?: string,
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): Promise<{ url: string; jwt: string }> {
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interface IDelayParams {
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delay_id?: string;
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delay_timeout?: number;
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delay_cs_api_url?: string;
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}
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let bodyDalayParts: IDelayParams = {};
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// Also check for empty string
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if (delayId && delayEndpointBaseUrl) {
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bodyDalayParts = {
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delay_id: delayId,
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delay_timeout:
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Config.get().matrix_rtc_session.delegated_delayed_leave.delay_ms,
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delay_cs_api_url: delayEndpointBaseUrl,
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};
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}
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const makeRequest = async (delayParts: IDelayParams): Promise<Response> => {
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return await fetch(livekitServiceURL + "/sfu/get", {
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method: "POST",
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headers: {
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"Content-Type": "application/json",
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},
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body: JSON.stringify({
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// The legacy JWT endpoint uses only the matrix room id to calculate the livekit room alias.
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// However, the livekit room alias is provided as part of the JWT payload.
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room: matrixRoomId,
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openid_token: openIDToken,
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device_id: membership.deviceId,
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...delayParts,
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}),
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});
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};
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const res = await doNetworkOperationWithRetry(async () => {
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let response = await makeRequest(bodyDalayParts);
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// Old service compatibility check
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const oldServiceDoesNotSupportDelayParts =
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response.status === 400 && Object.keys(bodyDalayParts).length > 0;
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// If http status 400 with M_BAD_JSON and we sent delay parts, retry without them
|
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if (oldServiceDoesNotSupportDelayParts) {
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try {
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const errorBody = await response.json();
|
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if (errorBody.errcode === "M_BAD_JSON") {
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response = await makeRequest({});
|
||||
}
|
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} catch {
|
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// If we can't parse the error, treat as real error
|
||||
}
|
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}
|
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|
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return response;
|
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});
|
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|
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if (!res.ok) {
|
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throw parseErrorResponse(res, await res.text());
|
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}
|
||||
return await res.json();
|
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}
|
||||
|
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class NotSupportedError extends Error {
|
||||
public constructor(message: string) {
|
||||
super(message);
|
||||
this.name = "NotSupported";
|
||||
}
|
||||
}
|
||||
|
||||
/**
|
||||
* Gets a JWT token appropriate for connecting to the SFU behind a given service
|
||||
* URL, using the default `/get_token` endpoint, which assigns us a hashed
|
||||
* (pseudonymised) participant identity.
|
||||
*/
|
||||
async function getLiveKitJWT(
|
||||
membership: CallMembershipIdentityParts,
|
||||
livekitServiceURL: string,
|
||||
matrixRoomId: string,
|
||||
slotId: string,
|
||||
openIDToken: IOpenIDToken,
|
||||
delayEndpointBaseUrl?: string,
|
||||
delayId?: string,
|
||||
): Promise<{ url: string; jwt: string }> {
|
||||
const { userId, deviceId, memberId } = membership;
|
||||
|
||||
const body = {
|
||||
room_id: matrixRoomId,
|
||||
slot_id: slotId,
|
||||
openid_token: openIDToken,
|
||||
member: {
|
||||
id: memberId,
|
||||
claimed_user_id: userId,
|
||||
claimed_device_id: deviceId,
|
||||
},
|
||||
};
|
||||
|
||||
let bodyDalayParts = {};
|
||||
// Also check for empty string
|
||||
if (delayId && delayEndpointBaseUrl) {
|
||||
bodyDalayParts = {
|
||||
delay_id: delayId,
|
||||
delay_timeout:
|
||||
Config.get().matrix_rtc_session.delegated_delayed_leave.delay_ms,
|
||||
delay_cs_api_url: delayEndpointBaseUrl,
|
||||
};
|
||||
}
|
||||
|
||||
const res = await doNetworkOperationWithRetry(async () => {
|
||||
return await fetch(livekitServiceURL + "/get_token", {
|
||||
method: "POST",
|
||||
headers: {
|
||||
"Content-Type": "application/json",
|
||||
},
|
||||
body: JSON.stringify({ ...body, ...bodyDalayParts }),
|
||||
});
|
||||
});
|
||||
|
||||
if (!res.ok) {
|
||||
const msg = "SFU Config fetch failed with status code " + res.status;
|
||||
if (res.status === 404) {
|
||||
throw new NotSupportedError(msg);
|
||||
} else {
|
||||
throw parseErrorResponse(res, await res.text());
|
||||
}
|
||||
}
|
||||
return await res.json();
|
||||
}
|
||||
@@ -0,0 +1,79 @@
|
||||
/*
|
||||
Copyright 2026 Element Creations Ltd.
|
||||
|
||||
SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-Element-Commercial
|
||||
Please see LICENSE in the repository root for full details.
|
||||
*/
|
||||
|
||||
/**
|
||||
* Configuration and access tokens provided by the SFU on successful authentication.
|
||||
*/
|
||||
export interface SFUConfig {
|
||||
/**
|
||||
* The WebSocket URL of the LiveKit SFU. This is what we connect the LiveKit
|
||||
* room to. Note that this is NOT the JWT service URL
|
||||
* (`livekit_service_url`): the legacy JWT service returns this URL as part of
|
||||
* its response, while the CS-Api based flow requires us to know it upfront.
|
||||
*/
|
||||
url: string;
|
||||
jwt: string;
|
||||
livekitAlias: string;
|
||||
// NOTE: Currently unused.
|
||||
livekitIdentity: string;
|
||||
}
|
||||
|
||||
/**
|
||||
* Decoded details from the JWT.
|
||||
*/
|
||||
interface SFUJWTPayload {
|
||||
/**
|
||||
* Expiration time for the JWT.
|
||||
* Note: This value is in seconds since Unix epoch.
|
||||
*/
|
||||
exp: number;
|
||||
/**
|
||||
* Name of the instance which authored the JWT
|
||||
*/
|
||||
iss: string;
|
||||
/**
|
||||
* Time at which the JWT can start to be used.
|
||||
* Note: This value is in seconds since Unix epoch.
|
||||
*/
|
||||
nbf: number;
|
||||
/**
|
||||
* Subject. The Livekit alias in this context.
|
||||
*/
|
||||
sub: string;
|
||||
/**
|
||||
* The set of permissions for the user.
|
||||
*/
|
||||
video: {
|
||||
canPublish: boolean;
|
||||
canSubscribe: boolean;
|
||||
room: string;
|
||||
roomJoin: boolean;
|
||||
};
|
||||
}
|
||||
|
||||
/**
|
||||
* Complements the SFU websocket url and the JWT with the information encoded in
|
||||
* the JWT payload itself.
|
||||
* @param sfuConfig The SFU websocket url and the JWT to connect with.
|
||||
* @returns The full SFU config, including the LiveKit alias and identity.
|
||||
*/
|
||||
export function extractFullConfigFromToken(sfuConfig: {
|
||||
url: string;
|
||||
jwt: string;
|
||||
}): SFUConfig {
|
||||
const [, payloadStr] = sfuConfig.jwt.split(".");
|
||||
const payload = JSON.parse(global.atob(payloadStr)) as SFUJWTPayload;
|
||||
return {
|
||||
jwt: sfuConfig.jwt,
|
||||
url: sfuConfig.url,
|
||||
livekitAlias: payload.video.room,
|
||||
// NOTE: Currently unused.
|
||||
// Probably also not helpful since we now compute the backendIdentity on joining the call so we can use it for the encryption manager.
|
||||
// The only reason for us to know it locally is to connect the right users with the lk world. (and to set our own keys)
|
||||
livekitIdentity: payload.sub,
|
||||
};
|
||||
}
|
||||
@@ -1,329 +0,0 @@
|
||||
/*
|
||||
Copyright 2025 Element Creations Ltd.
|
||||
|
||||
SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-Element-Commercial
|
||||
Please see LICENSE in the repository root for full details.
|
||||
*/
|
||||
|
||||
import {
|
||||
beforeEach,
|
||||
afterEach,
|
||||
describe,
|
||||
expect,
|
||||
it,
|
||||
type MockedObject,
|
||||
vitest,
|
||||
} from "vitest";
|
||||
import fetchMock from "fetch-mock";
|
||||
import { MatrixError } from "matrix-js-sdk";
|
||||
|
||||
import { getSFUConfigWithOpenID, type OpenIDClientParts } from "./openIDSFU";
|
||||
import { testJWTToken } from "../utils/test-fixtures";
|
||||
import { ownMemberMock } from "../utils/test";
|
||||
import { FailToGetOpenIdToken } from "../utils/errors";
|
||||
|
||||
const sfuUrl = "https://sfu.example.org";
|
||||
|
||||
describe("getSFUConfigWithOpenID", () => {
|
||||
let matrixClient: MockedObject<OpenIDClientParts>;
|
||||
beforeEach(() => {
|
||||
fetchMock.catch(404);
|
||||
matrixClient = {
|
||||
getOpenIdToken: vitest.fn(),
|
||||
getDeviceId: vitest.fn(),
|
||||
};
|
||||
});
|
||||
afterEach(() => {
|
||||
vitest.clearAllMocks();
|
||||
fetchMock.reset();
|
||||
});
|
||||
|
||||
it("should handle fetching a token", async () => {
|
||||
fetchMock.post("https://sfu.example.org/sfu/get", () => {
|
||||
return {
|
||||
status: 200,
|
||||
body: { url: sfuUrl, jwt: testJWTToken },
|
||||
};
|
||||
});
|
||||
const config = await getSFUConfigWithOpenID(
|
||||
matrixClient,
|
||||
ownMemberMock,
|
||||
"https://sfu.example.org",
|
||||
"!example_room_id",
|
||||
);
|
||||
expect(config).toEqual({
|
||||
jwt: testJWTToken,
|
||||
url: sfuUrl,
|
||||
livekitIdentity: "@me:example.org:ABCDEF",
|
||||
livekitAlias: "!example_room_id",
|
||||
});
|
||||
void (await fetchMock.flush());
|
||||
});
|
||||
|
||||
it("should fail if the SFU errors", async () => {
|
||||
fetchMock.post("https://sfu.example.org/sfu/get", () => {
|
||||
return {
|
||||
status: 500,
|
||||
body: {
|
||||
errcode: "M_LOOKUP_FAILED",
|
||||
error: "Failed to look up user info from homeserver",
|
||||
},
|
||||
};
|
||||
});
|
||||
try {
|
||||
await getSFUConfigWithOpenID(
|
||||
matrixClient,
|
||||
ownMemberMock,
|
||||
"https://sfu.example.org",
|
||||
"!example_room_id",
|
||||
);
|
||||
} catch (ex: unknown) {
|
||||
expect(ex).toBeInstanceOf(FailToGetOpenIdToken);
|
||||
expect((ex as FailToGetOpenIdToken).cause).toBeInstanceOf(MatrixError);
|
||||
const mxError = (ex as Error).cause as MatrixError;
|
||||
expect(mxError.message).toEqual(
|
||||
"MatrixError: [500] Failed to look up user info from homeserver",
|
||||
);
|
||||
|
||||
void (await fetchMock.flush());
|
||||
return;
|
||||
}
|
||||
expect.fail("Expected test to throw;");
|
||||
});
|
||||
|
||||
it("should retry without delay params if the JWT service legacy endpoint returns M_BAD_JSON 400", async () => {
|
||||
let callCount = 0;
|
||||
|
||||
fetchMock.post(
|
||||
"https://sfu.example.org/sfu/get",
|
||||
(url, opts) => {
|
||||
callCount++;
|
||||
const body = JSON.parse(opts.body as string);
|
||||
|
||||
// First call: check if it has delay parts and return 400
|
||||
if (callCount === 1) {
|
||||
expect(body).toHaveProperty("delay_id", "mock_delay_id");
|
||||
return {
|
||||
status: 400,
|
||||
body: { errcode: "M_BAD_JSON", error: "Unsupported parameters" },
|
||||
};
|
||||
}
|
||||
|
||||
// Second call: check if delay parts were stripped and return success
|
||||
expect(body).not.toHaveProperty("delay_id");
|
||||
expect(body).not.toHaveProperty("delay_timeout");
|
||||
expect(body).not.toHaveProperty("delay_cs_api_url");
|
||||
|
||||
return {
|
||||
status: 200,
|
||||
body: { url: sfuUrl, jwt: testJWTToken },
|
||||
};
|
||||
},
|
||||
{ overwriteRoutes: true },
|
||||
);
|
||||
|
||||
// Note: Assuming getSFUConfigWithOpenID eventually calls getLiveKitJWT
|
||||
const config = await getSFUConfigWithOpenID(
|
||||
matrixClient,
|
||||
ownMemberMock,
|
||||
"https://sfu.example.org",
|
||||
"!example_room_id",
|
||||
{
|
||||
delayEndpointBaseUrl: "https://matrix.homeserverserver.org",
|
||||
delayId: "mock_delay_id",
|
||||
},
|
||||
);
|
||||
|
||||
expect(config.jwt).toBe(testJWTToken);
|
||||
expect(callCount).toBe(2);
|
||||
void (await fetchMock.flush());
|
||||
});
|
||||
|
||||
it("should successfully send delay parameters to the JWT service legacy endpoint", async () => {
|
||||
fetchMock.post(
|
||||
"https://sfu.example.org/sfu/get",
|
||||
(url, opts) => {
|
||||
const body = JSON.parse(opts.body as string);
|
||||
|
||||
// Verify, that the request contains the expected delay parameters
|
||||
if (
|
||||
body.delay_id === "mock_delay_id" &&
|
||||
body.delay_timeout === 3600000 &&
|
||||
body.delay_cs_api_url === "https://homeserverserver.org/cs_api"
|
||||
) {
|
||||
return {
|
||||
status: 200,
|
||||
body: { url: sfuUrl, jwt: testJWTToken },
|
||||
};
|
||||
}
|
||||
return {
|
||||
status: 400,
|
||||
body: { error: "Missing expected delay params" },
|
||||
};
|
||||
},
|
||||
{ overwriteRoutes: true },
|
||||
);
|
||||
|
||||
const config = await getSFUConfigWithOpenID(
|
||||
matrixClient,
|
||||
ownMemberMock,
|
||||
"https://sfu.example.org",
|
||||
"!example_room_id",
|
||||
{
|
||||
delayEndpointBaseUrl: "https://homeserverserver.org/cs_api",
|
||||
delayId: "mock_delay_id",
|
||||
},
|
||||
);
|
||||
|
||||
// Prüfe das Ergebnis
|
||||
expect(config).toMatchObject({
|
||||
jwt: testJWTToken,
|
||||
url: sfuUrl,
|
||||
});
|
||||
|
||||
void (await fetchMock.flush());
|
||||
});
|
||||
|
||||
it("should try legacy and then new endpoint with delay delegation", async () => {
|
||||
fetchMock.post("https://sfu.example.org/get_token", () => {
|
||||
return {
|
||||
status: 500,
|
||||
body: {
|
||||
errcode: "M_LOOKUP_FAILED",
|
||||
error: "Failed to look up user info from homeserver",
|
||||
},
|
||||
};
|
||||
});
|
||||
fetchMock.post("https://sfu.example.org/sfu/get", () => {
|
||||
return {
|
||||
status: 500,
|
||||
body: {
|
||||
errcode: "M_LOOKUP_FAILED",
|
||||
error: "Failed to look up user info from homeserver",
|
||||
},
|
||||
};
|
||||
});
|
||||
try {
|
||||
await getSFUConfigWithOpenID(
|
||||
matrixClient,
|
||||
ownMemberMock,
|
||||
"https://sfu.example.org",
|
||||
"!example_room_id",
|
||||
{
|
||||
delayEndpointBaseUrl: "https://matrix.homeserverserver.org",
|
||||
delayId: "mock_delay_id",
|
||||
},
|
||||
);
|
||||
} catch (ex) {
|
||||
expect(ex).toBeInstanceOf(FailToGetOpenIdToken);
|
||||
expect((ex as FailToGetOpenIdToken).cause).toBeInstanceOf(MatrixError);
|
||||
const mxError = (ex as Error).cause as MatrixError;
|
||||
expect(mxError.message).toEqual(
|
||||
"MatrixError: [500] Failed to look up user info from homeserver",
|
||||
);
|
||||
void (await fetchMock.flush());
|
||||
}
|
||||
const calls = fetchMock.calls();
|
||||
expect(calls.length).toBe(2);
|
||||
|
||||
expect(calls[0][0]).toStrictEqual("https://sfu.example.org/get_token");
|
||||
expect(calls[0][1]).toStrictEqual({
|
||||
// check if it uses correct delayID!
|
||||
body: '{"room_id":"!example_room_id","slot_id":"m.call#ROOM","member":{"id":"@alice:example.org:DEVICE","claimed_user_id":"@alice:example.org","claimed_device_id":"DEVICE"},"delay_id":"mock_delay_id","delay_timeout":3600000,"delay_cs_api_url":"https://matrix.homeserverserver.org"}',
|
||||
method: "POST",
|
||||
headers: {
|
||||
"Content-Type": "application/json",
|
||||
},
|
||||
});
|
||||
|
||||
expect(calls[1][0]).toStrictEqual("https://sfu.example.org/sfu/get");
|
||||
|
||||
expect(calls[1][1]).toStrictEqual({
|
||||
body: '{"room":"!example_room_id","device_id":"DEVICE","delay_id":"mock_delay_id","delay_timeout":3600000,"delay_cs_api_url":"https://matrix.homeserverserver.org"}',
|
||||
headers: {
|
||||
"Content-Type": "application/json",
|
||||
},
|
||||
method: "POST",
|
||||
});
|
||||
});
|
||||
|
||||
it("dont try legacy if endpoint with delay delegation is sucessful", async () => {
|
||||
fetchMock.post("https://sfu.example.org/get_token", () => {
|
||||
return {
|
||||
status: 200,
|
||||
body: { url: sfuUrl, jwt: testJWTToken },
|
||||
};
|
||||
});
|
||||
fetchMock.post("https://sfu.example.org/sfu/get", () => {
|
||||
return {
|
||||
status: 500,
|
||||
body: { error: "Test failure" },
|
||||
};
|
||||
});
|
||||
try {
|
||||
await getSFUConfigWithOpenID(
|
||||
matrixClient,
|
||||
ownMemberMock,
|
||||
"https://sfu.example.org",
|
||||
"!example_room_id",
|
||||
{
|
||||
delayEndpointBaseUrl: "https://matrix.homeserverserver.org",
|
||||
delayId: "mock_delay_id",
|
||||
},
|
||||
);
|
||||
} catch (ex) {
|
||||
expect(ex).toBeInstanceOf(FailToGetOpenIdToken);
|
||||
expect((ex as FailToGetOpenIdToken).cause).toEqual(
|
||||
new Error("SFU Config fetch failed with status code 500"),
|
||||
);
|
||||
void (await fetchMock.flush());
|
||||
}
|
||||
const calls = fetchMock.calls();
|
||||
expect(calls.length).toBe(1);
|
||||
|
||||
expect(calls[0][0]).toStrictEqual("https://sfu.example.org/get_token");
|
||||
expect(calls[0][1]).toStrictEqual({
|
||||
// check if it uses correct delayID!
|
||||
body: '{"room_id":"!example_room_id","slot_id":"m.call#ROOM","member":{"id":"@alice:example.org:DEVICE","claimed_user_id":"@alice:example.org","claimed_device_id":"DEVICE"},"delay_id":"mock_delay_id","delay_timeout":3600000,"delay_cs_api_url":"https://matrix.homeserverserver.org"}',
|
||||
method: "POST",
|
||||
headers: {
|
||||
"Content-Type": "application/json",
|
||||
},
|
||||
});
|
||||
});
|
||||
|
||||
it("should retry fetching the openid token", async () => {
|
||||
let count = 0;
|
||||
matrixClient.getOpenIdToken.mockImplementation(async () => {
|
||||
count++;
|
||||
if (count < 2) {
|
||||
throw Error("Test failure");
|
||||
}
|
||||
return Promise.resolve({
|
||||
token_type: "Bearer",
|
||||
access_token: "foobar",
|
||||
matrix_server_name: "example.org",
|
||||
expires_in: 30,
|
||||
});
|
||||
});
|
||||
fetchMock.post("https://sfu.example.org/sfu/get", () => {
|
||||
return {
|
||||
status: 200,
|
||||
body: { url: sfuUrl, jwt: testJWTToken },
|
||||
};
|
||||
});
|
||||
const config = await getSFUConfigWithOpenID(
|
||||
matrixClient,
|
||||
ownMemberMock,
|
||||
"https://sfu.example.org",
|
||||
"!example_room_id",
|
||||
);
|
||||
expect(config).toEqual({
|
||||
jwt: testJWTToken,
|
||||
url: sfuUrl,
|
||||
livekitIdentity: "@me:example.org:ABCDEF",
|
||||
livekitAlias: "!example_room_id",
|
||||
});
|
||||
void (await fetchMock.flush());
|
||||
});
|
||||
});
|
||||
@@ -1,315 +0,0 @@
|
||||
/*
|
||||
Copyright 2023, 2024 New Vector Ltd.
|
||||
|
||||
SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-Element-Commercial
|
||||
Please see LICENSE in the repository root for full details.
|
||||
*/
|
||||
|
||||
import {
|
||||
type IOpenIDToken,
|
||||
type MatrixClient,
|
||||
parseErrorResponse,
|
||||
} from "matrix-js-sdk";
|
||||
import { type CallMembershipIdentityParts } from "matrix-js-sdk/lib/matrixrtc/EncryptionManager";
|
||||
import { type Logger } from "matrix-js-sdk/lib/logger";
|
||||
|
||||
import {
|
||||
FailToGetOpenIdToken,
|
||||
NoMatrix2AuthorizationService,
|
||||
} from "../utils/errors";
|
||||
import { doNetworkOperationWithRetry } from "../utils/matrix";
|
||||
import { Config } from "../config/Config";
|
||||
import { MatrixRTCMode } from "../config/ConfigOptions";
|
||||
|
||||
/**
|
||||
* Configuration and access tokens provided by the SFU on successful authentication.
|
||||
*/
|
||||
export interface SFUConfig {
|
||||
url: string;
|
||||
jwt: string;
|
||||
livekitAlias: string;
|
||||
// NOTE: Currently unused.
|
||||
livekitIdentity: string;
|
||||
}
|
||||
|
||||
/**
|
||||
* Decoded details from the JWT.
|
||||
*/
|
||||
interface SFUJWTPayload {
|
||||
/**
|
||||
* Expiration time for the JWT.
|
||||
* Note: This value is in seconds since Unix epoch.
|
||||
*/
|
||||
exp: number;
|
||||
/**
|
||||
* Name of the instance which authored the JWT
|
||||
*/
|
||||
iss: string;
|
||||
/**
|
||||
* Time at which the JWT can start to be used.
|
||||
* Note: This value is in seconds since Unix epoch.
|
||||
*/
|
||||
nbf: number;
|
||||
/**
|
||||
* Subject. The Livekit alias in this context.
|
||||
*/
|
||||
sub: string;
|
||||
/**
|
||||
* The set of permissions for the user.
|
||||
*/
|
||||
video: {
|
||||
canPublish: boolean;
|
||||
canSubscribe: boolean;
|
||||
room: string;
|
||||
roomJoin: boolean;
|
||||
};
|
||||
}
|
||||
|
||||
// The bits we need from MatrixClient
|
||||
export type OpenIDClientParts = Pick<
|
||||
MatrixClient,
|
||||
"getOpenIdToken" | "getDeviceId"
|
||||
>;
|
||||
|
||||
/**
|
||||
* Gets a bearer token from the homeserver and then use it to authenticate
|
||||
* to the matrix RTC backend in order to get acces to the SFU.
|
||||
* It has built-in retry for calls to the homeserver with a backoff policy.
|
||||
* @param client The Matrix client
|
||||
* @param membership Our own membership identity parts used to send to jwt service.
|
||||
* @param serviceUrl The URL of the livekit SFU service
|
||||
* @param roomId The room id used in the jwt request. This is NOT the livekit_alias. The jwt service will provide the alias. It maps matrix room ids <-> Livekit aliases.
|
||||
* @param opts Additional options to modify which endpoint with which data will be used to acquire the jwt token.
|
||||
* @param opts.matrixRTCMode Determines which version of the JWT endpoint to use, which affects whether the
|
||||
* RTC backend identity is based on string concatenation (legacy) or a hash (Matrix 2.0).
|
||||
* This function by default uses whatever is possible with the current jwt service installed next to the SFU.
|
||||
* For remote connections this does not matter, since we will not publish there we can rely on the newest option.
|
||||
* @param opts.delayEndpointBaseUrl The URL of the matrix homeserver.
|
||||
* @param opts.delayId The delay id used for the jwt service to manage.
|
||||
* @param logger optional logger.
|
||||
* @returns Object containing the token information
|
||||
* @throws FailToGetOpenIdToken
|
||||
*/
|
||||
export async function getSFUConfigWithOpenID(
|
||||
client: OpenIDClientParts,
|
||||
membership: CallMembershipIdentityParts,
|
||||
serviceUrl: string,
|
||||
roomId: string,
|
||||
opts?: {
|
||||
matrixRTCMode?: MatrixRTCMode;
|
||||
delayEndpointBaseUrl?: string;
|
||||
delayId?: string;
|
||||
},
|
||||
logger?: Logger,
|
||||
): Promise<SFUConfig> {
|
||||
let openIdToken: IOpenIDToken;
|
||||
try {
|
||||
openIdToken = await doNetworkOperationWithRetry(async () =>
|
||||
client.getOpenIdToken(),
|
||||
);
|
||||
} catch (error) {
|
||||
throw new FailToGetOpenIdToken(
|
||||
error instanceof Error ? error : new Error("Unknown error"),
|
||||
);
|
||||
}
|
||||
logger?.debug("Got openID token", openIdToken);
|
||||
let sfuConfig: { url: string; jwt: string } | undefined;
|
||||
|
||||
const tryBothJwtEndpoints = opts?.matrixRTCMode === undefined; // This is for SFUs where we do not publish.
|
||||
|
||||
const forceMatrix2Jwt = opts?.matrixRTCMode === MatrixRTCMode.Matrix_2_0;
|
||||
|
||||
// We want to start using the new endpoint (with optional delay delegation)
|
||||
// if we can use both or if we are forced to use the new one.
|
||||
if (tryBothJwtEndpoints || forceMatrix2Jwt) {
|
||||
try {
|
||||
logger?.info(
|
||||
`Trying to get JWT via default endpoint for focus ${serviceUrl}...`,
|
||||
);
|
||||
const sfuConfig = await getLiveKitJWT(
|
||||
membership,
|
||||
serviceUrl,
|
||||
roomId,
|
||||
openIdToken,
|
||||
opts?.delayEndpointBaseUrl,
|
||||
opts?.delayId,
|
||||
);
|
||||
|
||||
return extractFullConfigFromToken(sfuConfig);
|
||||
} catch (e) {
|
||||
logger?.debug(`Failed fetching jwt with matrix 2.0 endpoint:`, e);
|
||||
// Make this throw a hard error in case we force the matrix2.0 endpoint.
|
||||
if (forceMatrix2Jwt) {
|
||||
throw new NoMatrix2AuthorizationService(e as Error);
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
// DEPRECATED
|
||||
// here we either have a sfuConfig or we already exited because of `if (forceMatrix2) throw ...`
|
||||
// The only case we can get into this condition is, if `forceMatrix2` is `false`
|
||||
try {
|
||||
logger?.info(
|
||||
`Trying to get JWT with legacy endpoint for focus ${serviceUrl}...`,
|
||||
);
|
||||
sfuConfig = await getLiveKitJWTLegacy(
|
||||
membership.deviceId,
|
||||
serviceUrl,
|
||||
roomId,
|
||||
openIdToken,
|
||||
opts?.delayEndpointBaseUrl,
|
||||
opts?.delayId,
|
||||
);
|
||||
logger?.info(`Got JWT from call's active focus URL.`);
|
||||
return extractFullConfigFromToken(sfuConfig);
|
||||
} catch (ex) {
|
||||
throw new FailToGetOpenIdToken(
|
||||
ex instanceof Error ? ex : new Error(`Unknown error ${ex}`),
|
||||
);
|
||||
}
|
||||
}
|
||||
|
||||
function extractFullConfigFromToken(sfuConfig: {
|
||||
url: string;
|
||||
jwt: string;
|
||||
}): SFUConfig {
|
||||
const [, payloadStr] = sfuConfig.jwt.split(".");
|
||||
const payload = JSON.parse(global.atob(payloadStr)) as SFUJWTPayload;
|
||||
return {
|
||||
jwt: sfuConfig.jwt,
|
||||
url: sfuConfig.url,
|
||||
livekitAlias: payload.video.room,
|
||||
// NOTE: Currently unused.
|
||||
// Probably also not helpful since we now compute the backendIdentity on joining the call so we can use it for the encryption manager.
|
||||
// The only reason for us to know it locally is to connect the right users with the lk world. (and to set our own keys)
|
||||
livekitIdentity: payload.sub,
|
||||
};
|
||||
}
|
||||
|
||||
async function getLiveKitJWTLegacy(
|
||||
deviceId: string,
|
||||
livekitServiceURL: string,
|
||||
matrixRoomId: string,
|
||||
openIDToken: IOpenIDToken,
|
||||
delayEndpointBaseUrl?: string,
|
||||
delayId?: string,
|
||||
): Promise<{ url: string; jwt: string }> {
|
||||
interface IDelayParams {
|
||||
delay_id?: string;
|
||||
delay_timeout?: number;
|
||||
delay_cs_api_url?: string;
|
||||
}
|
||||
let bodyDalayParts: IDelayParams = {};
|
||||
// Also check for empty string
|
||||
if (delayId && delayEndpointBaseUrl) {
|
||||
bodyDalayParts = {
|
||||
delay_id: delayId,
|
||||
delay_timeout:
|
||||
Config.get().matrix_rtc_session.delegated_delayed_leave.delay_ms,
|
||||
delay_cs_api_url: delayEndpointBaseUrl,
|
||||
};
|
||||
}
|
||||
|
||||
const makeRequest = async (delayParts: IDelayParams): Promise<Response> => {
|
||||
return await fetch(livekitServiceURL + "/sfu/get", {
|
||||
method: "POST",
|
||||
headers: {
|
||||
"Content-Type": "application/json",
|
||||
},
|
||||
body: JSON.stringify({
|
||||
// The legacy JWT endpoint uses only the matrix room id to calculate the livekit room alias.
|
||||
// However, the livekit room alias is provided as part of the JWT payload.
|
||||
room: matrixRoomId,
|
||||
openid_token: openIDToken,
|
||||
device_id: deviceId,
|
||||
...delayParts,
|
||||
}),
|
||||
});
|
||||
};
|
||||
|
||||
const res = await doNetworkOperationWithRetry(async () => {
|
||||
let response = await makeRequest(bodyDalayParts);
|
||||
|
||||
// Old service compatibility check
|
||||
const oldServiceDoesNotSupportDelayParts =
|
||||
response.status === 400 && Object.keys(bodyDalayParts).length > 0;
|
||||
// If http status 400 with M_BAD_JSON and we sent delay parts, retry without them
|
||||
if (oldServiceDoesNotSupportDelayParts) {
|
||||
try {
|
||||
const errorBody = await response.json();
|
||||
if (errorBody.errcode === "M_BAD_JSON") {
|
||||
response = await makeRequest({});
|
||||
}
|
||||
} catch {
|
||||
// If we can't parse the error, treat as real error
|
||||
}
|
||||
}
|
||||
|
||||
return response;
|
||||
});
|
||||
|
||||
if (!res.ok) {
|
||||
throw parseErrorResponse(res, await res.text());
|
||||
}
|
||||
return await res.json();
|
||||
}
|
||||
|
||||
class NotSupportedError extends Error {
|
||||
public constructor(message: string) {
|
||||
super(message);
|
||||
this.name = "NotSupported";
|
||||
}
|
||||
}
|
||||
|
||||
export async function getLiveKitJWT(
|
||||
membership: CallMembershipIdentityParts,
|
||||
livekitServiceURL: string,
|
||||
matrixRoomId: string,
|
||||
openIDToken: IOpenIDToken,
|
||||
delayEndpointBaseUrl?: string,
|
||||
delayId?: string,
|
||||
): Promise<{ url: string; jwt: string }> {
|
||||
const { userId, deviceId, memberId } = membership;
|
||||
|
||||
const body = {
|
||||
room_id: matrixRoomId,
|
||||
slot_id: "m.call#ROOM",
|
||||
openid_token: openIDToken,
|
||||
member: {
|
||||
id: memberId,
|
||||
claimed_user_id: userId,
|
||||
claimed_device_id: deviceId,
|
||||
},
|
||||
};
|
||||
|
||||
let bodyDalayParts = {};
|
||||
// Also check for empty string
|
||||
if (delayId && delayEndpointBaseUrl) {
|
||||
bodyDalayParts = {
|
||||
delay_id: delayId,
|
||||
delay_timeout:
|
||||
Config.get().matrix_rtc_session.delegated_delayed_leave.delay_ms,
|
||||
delay_cs_api_url: delayEndpointBaseUrl,
|
||||
};
|
||||
}
|
||||
|
||||
const res = await doNetworkOperationWithRetry(async () => {
|
||||
return await fetch(livekitServiceURL + "/get_token", {
|
||||
method: "POST",
|
||||
headers: {
|
||||
"Content-Type": "application/json",
|
||||
},
|
||||
body: JSON.stringify({ ...body, ...bodyDalayParts }),
|
||||
});
|
||||
});
|
||||
|
||||
if (!res.ok) {
|
||||
const msg = "SFU Config fetch failed with status code " + res.status;
|
||||
if (res.status === 404) {
|
||||
throw new NotSupportedError(msg);
|
||||
} else {
|
||||
throw parseErrorResponse(res, await res.text());
|
||||
}
|
||||
}
|
||||
return await res.json();
|
||||
}
|
||||
Reference in New Issue
Block a user