@microsoft/teams.apps
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507 lines • 43.7 kB
JavaScript
"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
exports.DEFAULT_OAUTH_SETTINGS = exports.OAuthFlow = void 0;
exports.startOAuthSignIn = startOAuthSignIn;
const axios_1 = require("axios");
const teams_api_1 = require("@microsoft/teams.api");
const constants_1 = require("../diagnostics/constants");
const telemetry_1 = require("./telemetry");
/** @internal Gets a cached token or emits an OAuth sign-in card. */
async function startOAuthSignIn(context, connectionName, options = {}, onSignInInitiated) {
const oauthCardText = options.oauthCardText ?? 'Please Sign In...';
const signInButtonText = options.signInButtonText ?? 'Sign In';
try {
const response = await context.api.users.getToken({
channelId: context.activity.channelId,
userId: context.activity.from.id,
connectionName,
});
if (response.token) {
return response.token;
}
}
catch (error) {
if (!isTokenNotFoundError(error)) {
throw error;
}
}
const conversation = { ...context.ref };
const tokenExchangeState = {
connectionName,
conversation,
relatesTo: context.activity.relatesTo,
msAppId: context.appId,
};
const state = Buffer.from(JSON.stringify(tokenExchangeState)).toString('base64');
const resource = await context.api.bots.signIn.getResource({ state });
const conversationType = context.activity.conversation.conversationType;
const isChannel = conversationType === 'channel';
const isChannelOrGroup = isChannel || conversationType === 'groupChat';
const recipient = isChannelOrGroup
? { ...context.activity.from, isTargeted: true }
: context.activity.from;
const tokenExchangeResource = isChannel
? undefined
: resource.tokenExchangeResource;
await context.send(options.overrideSignInActivity?.(tokenExchangeResource, resource.tokenPostResource, resource.signInLink) ?? {
type: 'message',
recipient,
attachments: [
(0, teams_api_1.cardAttachment)('oauth', {
text: oauthCardText,
connectionName,
tokenExchangeResource,
tokenPostResource: resource.tokenPostResource,
buttons: [
{
type: 'signin',
title: signInButtonText,
value: options.signInLink || resource.signInLink,
},
],
}),
],
}, conversation);
await onSignInInitiated?.(context, connectionName, tokenExchangeResource !== undefined);
return undefined;
}
/**
* High-level OAuth lifecycle for one Bot Framework OAuth connection.
*
* Flows are registered through `AppOptions.oauthFlows` or
* `app.addOAuthFlow(...)` so inbound sign-in invokes can be dispatched to the
* correct connection. Apps without registered flows retain their legacy
* default connection as the same flow type for backward compatibility.
*/
class OAuthFlow {
connectionName;
options;
static PENDING_TTL_MS = 5 * 60 * 1000;
static MAX_PENDING_ENTRIES = 1_000;
static EXCHANGE_TTL_MS = 5 * 60 * 1000;
static MAX_EXCHANGE_ENTRIES = 1_000;
static EXCHANGE_STATE_KEY = '__oauth:exchanges';
signInCompleteHandler;
signInFailureHandler;
pendingSignIns = new Map();
pendingSsoSignIns = new Map();
// Process-local only: this map collapses concurrent duplicates that reach the
// same instance; persisted conversation state covers cross-instance retries.
tokenExchangeLocks = new Map();
// Retains completed exchanges when state is disabled or unavailable.
processedExchanges = new Map();
/**
* Creates an OAuth flow for a connection.
*
* Applications should use `AppOptions.oauthFlows` or
* `app.addOAuthFlow(...)` so the flow is registered for inbound invokes.
* @param connectionName OAuth connection name configured on the bot.
* @param options Optional default card options.
*/
constructor(connectionName, options = {}) {
this.connectionName = connectionName;
this.options = options;
if (!connectionName.trim()) {
throw new Error('OAuth connection name is required.');
}
}
/**
* Registers the callback invoked after interactive sign-in completes.
*
* Calling this method again replaces the previous callback.
*/
onSignInComplete(handler) {
this.signInCompleteHandler = handler;
return this;
}
/**
* Registers the callback invoked when interactive sign-in fails.
*
* Calling this method again replaces the previous callback.
*/
onSignInFailure(handler) {
this.signInFailureHandler = handler;
return this;
}
/**
* Silently gets the current user's token for this connection.
*
* Returns undefined when the token service returns no token or reports `404`.
* Other transport and service failures, including `400` and `412`, propagate.
*/
async getToken(context) {
return (0, telemetry_1.traceOAuthOperation)(constants_1.APP_SPAN_NAMES.oauth, this.connectionName, constants_1.APP_OAUTH_OPERATION.getToken, async (_span, telemetry) => {
try {
const response = await context.api.users.getToken({
channelId: context.activity.channelId,
userId: context.activity.from.id,
connectionName: this.connectionName,
});
const token = response.token || undefined;
telemetry.result = token
? constants_1.APP_OAUTH_RESULT.hit
: constants_1.APP_OAUTH_RESULT.miss;
return token;
}
catch (error) {
if (isTokenNotFoundError(error)) {
telemetry.result = constants_1.APP_OAUTH_RESULT.miss;
return undefined;
}
throw error;
}
});
}
/**
* Gets a cached token or sends an OAuth card to start interactive sign-in.
*
* Returns the cached token string when already signed in. Returns undefined
* after sending a card; completion is then delivered to the registered
* callback and the existing app `signin` event. Cached-token lookup errors
* other than `404` propagate without sending a card.
*/
signIn(context, options = {}) {
return (0, telemetry_1.traceOAuthOperation)(constants_1.APP_SPAN_NAMES.oauth, this.connectionName, constants_1.APP_OAUTH_OPERATION.signIn, async (_span, telemetry) => {
const token = await startOAuthSignIn(context, this.connectionName, {
...this.options,
...options,
connectionName: this.connectionName,
}, (signInContext, _connectionName, supportsSso) => {
this.recordPending(signInContext, supportsSso);
});
telemetry.result = token
? constants_1.APP_OAUTH_RESULT.cached
: constants_1.APP_OAUTH_RESULT.cardSent;
return token;
});
}
/**
* Revokes the current user's token for this connection.
*/
signOut(context) {
return (0, telemetry_1.traceOAuthOperation)(constants_1.APP_SPAN_NAMES.oauth, this.connectionName, constants_1.APP_OAUTH_OPERATION.signOut, async (_span, telemetry) => {
await context.api.users.signOut({
channelId: context.activity.channelId,
userId: context.activity.from.id,
connectionName: this.connectionName,
});
telemetry.result = constants_1.APP_OAUTH_RESULT.success;
});
}
/**
* Returns whether a token is currently available for this connection.
*/
async isSignedIn(context) {
return (await this.getToken(context)) !== undefined;
}
/** @internal Invokes the registered completion callback. */
async complete(context, token) {
await this.signInCompleteHandler?.(context, token);
}
/** @internal Invokes the registered failure callback. */
async fail(context, failure) {
await this.signInFailureHandler?.(context, failure);
}
/** @internal Exchanges an SSO token for this flow. */
async exchangeToken(context, value, onSuccess, onError, connectionName = this.connectionName) {
return (0, telemetry_1.traceOAuthOperation)(constants_1.APP_SPAN_NAMES.oauth, connectionName, constants_1.APP_OAUTH_OPERATION.tokenExchange, async (span, telemetry) => {
const exchangeId = value.id;
if (exchangeId) {
if (this.isExchangeProcessed(context, exchangeId)) {
telemetry.result = constants_1.APP_OAUTH_RESULT.duplicate;
telemetry.responseStatus = 200;
return { status: 200 };
}
const existingLock = this.tokenExchangeLocks.get(exchangeId);
if (existingLock) {
const result = await existingLock;
telemetry.result = result.status === 200
? constants_1.APP_OAUTH_RESULT.duplicate
: constants_1.APP_OAUTH_RESULT.failure;
telemetry.responseStatus = result.status;
return result;
}
}
const performExchange = async () => {
let token;
try {
token = await context.api.users.exchangeToken({
channelId: context.activity.channelId,
userId: context.activity.from.id,
connectionName,
exchangeRequest: {
token: value.token,
},
});
}
catch (error) {
if (!(error instanceof axios_1.AxiosError)) {
// Token-service failures use AxiosError. Let anything outside
// that contract follow the app's normal error handling.
throw error;
}
if (isExpectedOAuthInvokeError(error)) {
// 412 tells Teams that silent SSO could not complete and it
// should fall back to the interactive OAuth card.
await this.fail(context);
telemetry.callbackInvoked =
this.signInFailureHandler !== undefined;
telemetry.result = constants_1.APP_OAUTH_RESULT.failure;
telemetry.responseStatus = 412;
return this.tokenExchangeFailure(value.id, connectionName);
}
// Unexpected service statuses are operational errors, not a
// request for interactive fallback, so preserve their status.
this.clearPending(context);
await this.fail(context);
telemetry.callbackInvoked =
this.signInFailureHandler !== undefined;
telemetry.result = constants_1.APP_OAUTH_RESULT.failure;
const status = error.status || 500;
telemetry.responseStatus = status;
(0, telemetry_1.recordUnexpectedOAuthError)(span, telemetry, error, constants_1.APP_OAUTH_ERROR_TYPE.httpError);
onError(error);
return { status };
}
if (!token?.token) {
this.clearPending(context);
await this.fail(context);
telemetry.callbackInvoked = this.signInFailureHandler !== undefined;
telemetry.result = constants_1.APP_OAUTH_RESULT.failure;
telemetry.responseStatus = 412;
return this.tokenExchangeFailure(value.id, connectionName);
}
if (exchangeId) {
this.markExchangeProcessed(context, exchangeId);
}
this.clearPending(context);
await onSuccess(token);
telemetry.callbackInvoked = this.signInCompleteHandler !== undefined;
telemetry.result = constants_1.APP_OAUTH_RESULT.success;
telemetry.responseStatus = 200;
return { status: 200 };
};
if (!exchangeId) {
return performExchange();
}
const lock = performExchange();
this.tokenExchangeLocks.set(exchangeId, lock);
try {
return await lock;
}
finally {
this.tokenExchangeLocks.delete(exchangeId);
}
});
}
/** @internal Attempts to redeem a verify-state code for this flow. */
async verifyState(context, state, onSuccess, onError) {
return (0, telemetry_1.traceOAuthOperation)(constants_1.APP_SPAN_NAMES.oauth, this.connectionName, constants_1.APP_OAUTH_OPERATION.verifyState, async (span, telemetry) => {
if (!state) {
context.log.warn(`auth state not found for conversation "${context.activity.conversation.id}" and user "${context.activity.from.id}"`);
telemetry.result = constants_1.APP_OAUTH_RESULT.noToken;
telemetry.responseStatus = 404;
return undefined;
}
let token;
try {
token = await context.api.users.getToken({
channelId: context.activity.channelId,
userId: context.activity.from.id,
connectionName: this.connectionName,
code: state,
});
}
catch (error) {
if (!(error instanceof axios_1.AxiosError)) {
throw error;
}
if (isExpectedOAuthInvokeError(error)) {
telemetry.result = constants_1.APP_OAUTH_RESULT.noToken;
telemetry.responseStatus = error.status;
return undefined;
}
this.clearPending(context);
await this.fail(context);
telemetry.callbackInvoked = this.signInFailureHandler !== undefined;
telemetry.result = constants_1.APP_OAUTH_RESULT.failure;
const status = error.status || 500;
telemetry.responseStatus = status;
(0, telemetry_1.recordUnexpectedOAuthError)(span, telemetry, error, constants_1.APP_OAUTH_ERROR_TYPE.httpError);
onError(error);
return { status };
}
if (!token?.token) {
telemetry.result = constants_1.APP_OAUTH_RESULT.noToken;
telemetry.responseStatus = 404;
return undefined;
}
this.clearPending(context);
await onSuccess(token);
telemetry.callbackInvoked = this.signInCompleteHandler !== undefined;
telemetry.result = constants_1.APP_OAUTH_RESULT.success;
telemetry.responseStatus = 200;
return { status: 200 };
});
}
/** @internal Records this flow as the source of an interactive sign-in. */
recordPending(context, supportsSso) {
const startedAt = Date.now();
this.setPendingValue(context, false, startedAt);
if (supportsSso) {
this.setPendingValue(context, true, startedAt);
}
else {
this.deletePendingValue(context, true);
}
}
/** @internal Gets when this flow most recently initiated sign-in. */
getPending(context, ssoOnly) {
const now = Date.now();
const stateKey = this.pendingStateKey(ssoOnly);
const userState = context.state?.user;
if (userState) {
const stateValue = userState.get(stateKey);
if (stateValue !== undefined) {
if (now - stateValue < OAuthFlow.PENDING_TTL_MS) {
return stateValue;
}
userState.delete(stateKey);
}
return undefined;
}
const pending = this.pendingMap(ssoOnly);
this.prunePending(pending, now);
return pending.get(this.pendingContextKey(context));
}
/** @internal Clears pending sign-in attribution for this flow. */
clearPending(context) {
this.deletePendingValue(context, false);
this.deletePendingValue(context, true);
}
setPendingValue(context, ssoOnly, value) {
const userState = context.state?.user;
if (userState) {
userState.set(this.pendingStateKey(ssoOnly), value);
return;
}
const pending = this.pendingMap(ssoOnly);
pending.set(this.pendingContextKey(context), value);
this.prunePending(pending, value);
}
deletePendingValue(context, ssoOnly) {
context.state?.user?.delete(this.pendingStateKey(ssoOnly));
this.pendingMap(ssoOnly).delete(this.pendingContextKey(context));
}
pendingStateKey(ssoOnly) {
return `__oauth:pending:${ssoOnly ? 'sso:' : ''}${this.connectionName.toLowerCase()}`;
}
pendingMap(ssoOnly) {
return ssoOnly ? this.pendingSsoSignIns : this.pendingSignIns;
}
pendingContextKey(context) {
return JSON.stringify([
context.activity.conversation.id,
context.activity.from.id,
]);
}
prunePending(pending, now) {
for (const [contextKey, timestamp] of pending) {
if (now - timestamp >= OAuthFlow.PENDING_TTL_MS) {
pending.delete(contextKey);
}
}
if (pending.size <= OAuthFlow.MAX_PENDING_ENTRIES) {
return;
}
for (const [contextKey] of [...pending.entries()]
.sort(([, left], [, right]) => right - left)
.slice(OAuthFlow.MAX_PENDING_ENTRIES)) {
pending.delete(contextKey);
}
}
tokenExchangeFailure(id, connectionName = this.connectionName) {
return {
status: 412,
body: {
id,
connectionName,
failureDetail: 'unable to exchange token...',
},
};
}
isExchangeProcessed(context, exchangeId) {
const now = Date.now();
const stateTimestamp = this.getExchangeState(context, now)[exchangeId];
if (stateTimestamp !== undefined &&
now - stateTimestamp < OAuthFlow.EXCHANGE_TTL_MS) {
return true;
}
this.pruneProcessedExchanges(now);
return this.processedExchanges.has(exchangeId);
}
markExchangeProcessed(context, exchangeId) {
const timestamp = Date.now();
this.processedExchanges.set(exchangeId, timestamp);
this.pruneProcessedExchanges(timestamp);
const conversationState = context.state?.conversation;
if (!conversationState) {
return;
}
const exchanges = this.getExchangeState(context, timestamp);
exchanges[exchangeId] = timestamp;
const bounded = Object.fromEntries(Object.entries(exchanges)
.sort(([, left], [, right]) => right - left)
.slice(0, OAuthFlow.MAX_EXCHANGE_ENTRIES));
conversationState.set(OAuthFlow.EXCHANGE_STATE_KEY, bounded);
}
pruneProcessedExchanges(now) {
for (const [exchangeId, timestamp] of this.processedExchanges) {
if (now - timestamp >= OAuthFlow.EXCHANGE_TTL_MS) {
this.processedExchanges.delete(exchangeId);
}
}
if (this.processedExchanges.size <= OAuthFlow.MAX_EXCHANGE_ENTRIES) {
return;
}
for (const [exchangeId] of [...this.processedExchanges.entries()]
.sort(([, left], [, right]) => right - left)
.slice(OAuthFlow.MAX_EXCHANGE_ENTRIES)) {
this.processedExchanges.delete(exchangeId);
}
}
getExchangeState(context, now) {
const conversationState = context.state?.conversation;
if (!conversationState) {
return {};
}
const stored = conversationState.get(OAuthFlow.EXCHANGE_STATE_KEY) ?? {};
const current = Object.fromEntries(Object.entries(stored)
.filter(([, timestamp]) => Number.isFinite(timestamp) &&
now - timestamp < OAuthFlow.EXCHANGE_TTL_MS)
.sort(([, left], [, right]) => right - left)
.slice(0, OAuthFlow.MAX_EXCHANGE_ENTRIES));
if (Object.keys(current).length !== Object.keys(stored).length) {
if (Object.keys(current).length === 0) {
conversationState.delete(OAuthFlow.EXCHANGE_STATE_KEY);
}
else {
conversationState.set(OAuthFlow.EXCHANGE_STATE_KEY, current);
}
}
return current;
}
}
exports.OAuthFlow = OAuthFlow;
/** @internal Defaults retained for deprecated context OAuth behavior. */
exports.DEFAULT_OAUTH_SETTINGS = {
defaultConnectionName: 'graph'
};
function isTokenNotFoundError(error) {
return error instanceof axios_1.AxiosError && error.status === 404;
}
function isExpectedOAuthInvokeError(error) {
return error instanceof axios_1.AxiosError &&
(error.status === 400 || error.status === 404 || error.status === 412);
}
//# 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