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/*---------------------------------------------------------------------------------------------
* Copyright (c) Microsoft Corporation. All rights reserved.
* Licensed under the MIT License. See License.txt in the project root for license information.
*--------------------------------------------------------------------------------------------*/
import * as vscode from 'vscode';
import { v4 as uuid } from 'uuid';
import { Keychain } from './common/keychain';
import { GitHubEnterpriseServer, GitHubServer, IGitHubServer } from './githubServer';
import { arrayEquals } from './common/utils';
import { ExperimentationTelemetry } from './experimentationService';
import TelemetryReporter from '@vscode/extension-telemetry';
import { Log } from './common/logger';
interface SessionData {
id: string;
account?: {
label?: string;
displayName?: string;
id: string;
};
scopes: string[];
accessToken: string;
}
export enum AuthProviderType {
github = 'github',
githubEnterprise = 'github-enterprise'
}
export class GitHubAuthenticationProvider implements vscode.AuthenticationProvider, vscode.Disposable {
private _sessionChangeEmitter = new vscode.EventEmitter<vscode.AuthenticationProviderAuthenticationSessionsChangeEvent>();
private _logger = new Log(this.type);
private _githubServer: IGitHubServer;
private _telemetryReporter: ExperimentationTelemetry;
private _keychain: Keychain = new Keychain(this.context, `${this.type}.auth`, this._logger);
private _sessionsPromise: Promise<vscode.AuthenticationSession[]>;
private _disposable: vscode.Disposable;
constructor(private readonly context: vscode.ExtensionContext, private readonly type: AuthProviderType) {
const { name, version, aiKey } = context.extension.packageJSON as { name: string; version: string; aiKey: string };
this._telemetryReporter = new ExperimentationTelemetry(context, new TelemetryReporter(name, version, aiKey));
if (this.type === AuthProviderType.github) {
this._githubServer = new GitHubServer(
// We only can use the Device Code flow when we are running with a remote extension host.
context.extension.extensionKind === vscode.ExtensionKind.Workspace
// This should only matter when we are running in code-oss. See the other change in this commit.
|| vscode.env.uiKind === vscode.UIKind.Desktop,
this._logger,
this._telemetryReporter);
} else {
this._githubServer = new GitHubEnterpriseServer(this._logger, this._telemetryReporter);
}
// Contains the current state of the sessions we have available.
this._sessionsPromise = this.readSessions();
this._disposable = vscode.Disposable.from(
this._telemetryReporter,
this._githubServer,
vscode.authentication.registerAuthenticationProvider(type, this._githubServer.friendlyName, this, { supportsMultipleAccounts: false }),
this.context.secrets.onDidChange(() => this.checkForUpdates())
);
}
dispose() {
this._disposable.dispose();
}
get onDidChangeSessions() {
return this._sessionChangeEmitter.event;
}
async getSessions(scopes?: string[]): Promise<vscode.AuthenticationSession[]> {
// For GitHub scope list, order doesn't matter so we immediately sort the scopes
const sortedScopes = scopes?.sort() || [];
this._logger.info(`Getting sessions for ${sortedScopes.length ? sortedScopes.join(',') : 'all scopes'}...`);
const sessions = await this._sessionsPromise;
const finalSessions = sortedScopes.length
? sessions.filter(session => arrayEquals([...session.scopes].sort(), sortedScopes))
: sessions;
this._logger.info(`Got ${finalSessions.length} sessions for ${sortedScopes?.join(',') ?? 'all scopes'}...`);
return finalSessions;
}
private async afterTokenLoad(token: string): Promise<void> {
this._githubServer.sendAdditionalTelemetryInfo(token);
}
private async checkForUpdates() {
const previousSessions = await this._sessionsPromise;
this._sessionsPromise = this.readSessions();
const storedSessions = await this._sessionsPromise;
const added: vscode.AuthenticationSession[] = [];
const removed: vscode.AuthenticationSession[] = [];
storedSessions.forEach(session => {
const matchesExisting = previousSessions.some(s => s.id === session.id);
// Another window added a session to the keychain, add it to our state as well
if (!matchesExisting) {
this._logger.info('Adding session found in keychain');
added.push(session);
}
});
previousSessions.forEach(session => {
const matchesExisting = storedSessions.some(s => s.id === session.id);
// Another window has logged out, remove from our state
if (!matchesExisting) {
this._logger.info('Removing session no longer found in keychain');
removed.push(session);
}
});
if (added.length || removed.length) {
this._sessionChangeEmitter.fire({ added, removed, changed: [] });
}
}
private async readSessions(): Promise<vscode.AuthenticationSession[]> {
let sessionData: SessionData[];
try {
this._logger.info('Reading sessions from keychain...');
const storedSessions = await this._keychain.getToken();
if (!storedSessions) {
return [];
}
this._logger.info('Got stored sessions!');
try {
sessionData = JSON.parse(storedSessions);
} catch (e) {
await this._keychain.deleteToken();
throw e;
}
} catch (e) {
this._logger.error(`Error reading token: ${e}`);
return [];
}
// TODO: eventually remove this Set because we should only have one session per set of scopes.
const scopesSeen = new Set<string>();
const sessionPromises = sessionData.map(async (session: SessionData) => {
// For GitHub scope list, order doesn't matter so we immediately sort the scopes
const sortedScopes = session.scopes.sort();
const scopesStr = sortedScopes.join(' ');
if (scopesSeen.has(scopesStr)) {
return undefined;
}
let userInfo: { id: string; accountName: string } | undefined;
if (!session.account) {
try {
userInfo = await this._githubServer.getUserInfo(session.accessToken);
this._logger.info(`Verified session with the following scopes: ${scopesStr}`);
} catch (e) {
// Remove sessions that return unauthorized response
if (e.message === 'Unauthorized') {
return undefined;
}
}
}
setTimeout(() => this.afterTokenLoad(session.accessToken), 1000);
this._logger.trace(`Read the following session from the keychain with the following scopes: ${scopesStr}`);
scopesSeen.add(scopesStr);
return {
id: session.id,
account: {
label: session.account
? session.account.label ?? session.account.displayName ?? '<unknown>'
: userInfo?.accountName ?? '<unknown>',
id: session.account?.id ?? userInfo?.id ?? '<unknown>'
},
scopes: sortedScopes,
accessToken: session.accessToken
};
});
const verifiedSessions = (await Promise.allSettled(sessionPromises))
.filter(p => p.status === 'fulfilled')
.map(p => (p as PromiseFulfilledResult<vscode.AuthenticationSession | undefined>).value)
.filter(<T>(p?: T): p is T => Boolean(p));
this._logger.info(`Got ${verifiedSessions.length} verified sessions.`);
if (verifiedSessions.length !== sessionData.length) {
await this.storeSessions(verifiedSessions);
}
return verifiedSessions;
}
private async storeSessions(sessions: vscode.AuthenticationSession[]): Promise<void> {
this._logger.info(`Storing ${sessions.length} sessions...`);
this._sessionsPromise = Promise.resolve(sessions);
await this._keychain.setToken(JSON.stringify(sessions));
this._logger.info(`Stored ${sessions.length} sessions!`);
}
public async createSession(scopes: string[]): Promise<vscode.AuthenticationSession> {
try {
// For GitHub scope list, order doesn't matter so we immediately sort the scopes
const sortedScopes = scopes.sort();
/* __GDPR__
"login" : {
"scopes": { "classification": "PublicNonPersonalData", "purpose": "FeatureInsight" }
}
*/
this._telemetryReporter?.sendTelemetryEvent('login', {
scopes: JSON.stringify(sortedScopes),
});
const scopeString = sortedScopes.join(' ');
const token = await this._githubServer.login(scopeString);
this.afterTokenLoad(token);
const session = await this.tokenToSession(token, sortedScopes);
const sessions = await this._sessionsPromise;
const sessionIndex = sessions.findIndex(s => s.id === session.id || arrayEquals([...s.scopes].sort(), sortedScopes));
if (sessionIndex > -1) {
sessions.splice(sessionIndex, 1, session);
} else {
sessions.push(session);
}
await this.storeSessions(sessions);
this._sessionChangeEmitter.fire({ added: [session], removed: [], changed: [] });
this._logger.info('Login success!');
return session;
} catch (e) {
// If login was cancelled, do not notify user.
if (e === 'Cancelled' || e.message === 'Cancelled') {
/* __GDPR__
"loginCancelled" : { }
*/
this._telemetryReporter?.sendTelemetryEvent('loginCancelled');
throw e;
}
/* __GDPR__
"loginFailed" : { }
*/
this._telemetryReporter?.sendTelemetryEvent('loginFailed');
vscode.window.showErrorMessage(`Sign in failed: ${e}`);
this._logger.error(e);
throw e;
}
}
private async tokenToSession(token: string, scopes: string[]): Promise<vscode.AuthenticationSession> {
const userInfo = await this._githubServer.getUserInfo(token);
return {
id: uuid(),
accessToken: token,
account: { label: userInfo.accountName, id: userInfo.id },
scopes
};
}
public async removeSession(id: string) {
try {
/* __GDPR__
"logout" : { }
*/
this._telemetryReporter?.sendTelemetryEvent('logout');
this._logger.info(`Logging out of ${id}`);
const sessions = await this._sessionsPromise;
const sessionIndex = sessions.findIndex(session => session.id === id);
if (sessionIndex > -1) {
const session = sessions[sessionIndex];
sessions.splice(sessionIndex, 1);
await this.storeSessions(sessions);
this._sessionChangeEmitter.fire({ added: [], removed: [session], changed: [] });
} else {
this._logger.error('Session not found');
}
} catch (e) {
/* __GDPR__
"logoutFailed" : { }
*/
this._telemetryReporter?.sendTelemetryEvent('logoutFailed');
vscode.window.showErrorMessage(`Sign out failed: ${e}`);
this._logger.error(e);
throw e;
}
}
}
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