286 lines
9.0 KiB
TypeScript
286 lines
9.0 KiB
TypeScript
/*---------------------------------------------------------------------------------------------
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* Copyright (c) Microsoft Corporation. All rights reserved.
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* Licensed under the MIT License. See License.txt in the project root for license information.
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*--------------------------------------------------------------------------------------------*/
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import * as nls from 'vscode-nls';
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import * as vscode from 'vscode';
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import fetch, { Response } from 'node-fetch';
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import { v4 as uuid } from 'uuid';
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import { PromiseAdapter, promiseFromEvent } from './common/utils';
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import Logger from './common/logger';
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import { ExperimentationTelemetry } from './experimentationService';
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const localize = nls.loadMessageBundle();
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export const NETWORK_ERROR = 'network error';
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// NOTE@coder: use our own auth relay (the commented one is microsoft's, not ours)
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const AUTH_RELAY_SERVER = 'auth.code-server.dev';
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// const AUTH_RELAY_STAGING_SERVER = 'client-auth-staging-14a768b.herokuapp.com';
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class UriEventHandler extends vscode.EventEmitter<vscode.Uri> implements vscode.UriHandler {
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public handleUri(uri: vscode.Uri) {
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this.fire(uri);
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}
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}
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export const uriHandler = new UriEventHandler;
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const onDidManuallyProvideToken = new vscode.EventEmitter<string | undefined>();
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function parseQuery(uri: vscode.Uri) {
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return uri.query.split('&').reduce((prev: any, current) => {
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const queryString = current.split('=');
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prev[queryString[0]] = queryString[1];
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return prev;
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}, {});
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}
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export class GitHubServer {
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private _statusBarItem: vscode.StatusBarItem | undefined;
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private _pendingStates = new Map<string, string[]>();
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private _codeExchangePromises = new Map<string, { promise: Promise<string>, cancel: vscode.EventEmitter<void> }>();
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constructor(private readonly telemetryReporter: ExperimentationTelemetry) { }
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private isTestEnvironment(url: vscode.Uri): boolean {
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return /\.azurewebsites\.net$/.test(url.authority) || url.authority.startsWith('localhost:');
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}
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// TODO@joaomoreno TODO@RMacfarlane
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private async isNoCorsEnvironment(): Promise<boolean> {
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const uri = await vscode.env.asExternalUri(vscode.Uri.parse(`${vscode.env.uriScheme}://vscode.github-authentication/did-authenticate`));
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return uri.scheme === 'https' && /^vscode\./.test(uri.authority);
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}
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public async login(scopes: string): Promise<string> {
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Logger.info('Logging in...');
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this.updateStatusBarItem(true);
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const state = uuid();
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// TODO@joaomoreno TODO@RMacfarlane
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const nocors = await this.isNoCorsEnvironment();
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const callbackUri = await vscode.env.asExternalUri(vscode.Uri.parse(`${vscode.env.uriScheme}://vscode.github-authentication/did-authenticate${nocors ? '?nocors=true' : ''}`));
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if (this.isTestEnvironment(callbackUri)) {
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const token = await vscode.window.showInputBox({ prompt: 'GitHub Personal Access Token', ignoreFocusOut: true });
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if (!token) { throw new Error('Sign in failed: No token provided'); }
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const tokenScopes = await this.getScopes(token); // Example: ['repo', 'user']
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const scopesList = scopes.split(' '); // Example: 'read:user repo user:email'
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if (!scopesList.every(scope => {
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const included = tokenScopes.includes(scope);
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if (included || !scope.includes(':')) {
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return included;
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}
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return scope.split(':').some(splitScopes => {
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return tokenScopes.includes(splitScopes);
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});
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})) {
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throw new Error(`The provided token is does not match the requested scopes: ${scopes}`);
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}
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this.updateStatusBarItem(false);
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return token;
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} else {
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const existingStates = this._pendingStates.get(scopes) || [];
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this._pendingStates.set(scopes, [...existingStates, state]);
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const uri = vscode.Uri.parse(`https://${AUTH_RELAY_SERVER}/authorize/?callbackUri=${encodeURIComponent(callbackUri.toString())}&scope=${scopes}&state=${state}&responseType=code&authServer=https://github.com${nocors ? '&nocors=true' : ''}`);
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await vscode.env.openExternal(uri);
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}
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// Register a single listener for the URI callback, in case the user starts the login process multiple times
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// before completing it.
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let codeExchangePromise = this._codeExchangePromises.get(scopes);
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if (!codeExchangePromise) {
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codeExchangePromise = promiseFromEvent(uriHandler.event, this.exchangeCodeForToken(scopes));
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this._codeExchangePromises.set(scopes, codeExchangePromise);
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}
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return Promise.race([
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codeExchangePromise.promise,
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promiseFromEvent<string | undefined, string>(onDidManuallyProvideToken.event, (token: string | undefined, resolve, reject): void => {
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if (!token) {
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reject('Cancelled');
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} else {
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resolve(token);
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}
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}).promise
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]).finally(() => {
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this._pendingStates.delete(scopes);
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codeExchangePromise?.cancel.fire();
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this._codeExchangePromises.delete(scopes);
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this.updateStatusBarItem(false);
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});
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}
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private exchangeCodeForToken: (scopes: string) => PromiseAdapter<vscode.Uri, string> =
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(scopes) => async (uri, resolve, reject) => {
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Logger.info('Exchanging code for token...');
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const query = parseQuery(uri);
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const code = query.code;
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const acceptedStates = this._pendingStates.get(scopes) || [];
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if (!acceptedStates.includes(query.state)) {
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reject('Received mismatched state');
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return;
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}
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const url = `https://${AUTH_RELAY_SERVER}/token?code=${code}&state=${query.state}`;
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// TODO@joao: remove
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if (query.nocors) {
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try {
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const json: any = await vscode.commands.executeCommand('_workbench.fetchJSON', url, 'POST');
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Logger.info('Token exchange success!');
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resolve(json.access_token);
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} catch (err) {
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reject(err);
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}
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} else {
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try {
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const result = await fetch(url, {
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method: 'POST',
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headers: {
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Accept: 'application/json'
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}
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});
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if (result.ok) {
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const json = await result.json();
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Logger.info('Token exchange success!');
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resolve(json.access_token);
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} else {
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reject(result.statusText);
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}
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} catch (ex) {
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reject(ex);
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}
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}
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};
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private updateStatusBarItem(isStart?: boolean) {
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if (isStart && !this._statusBarItem) {
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this._statusBarItem = vscode.window.createStatusBarItem(vscode.StatusBarAlignment.Left);
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this._statusBarItem.text = localize('signingIn', "$(mark-github) Signing in to github.com...");
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this._statusBarItem.command = 'github.provide-token';
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this._statusBarItem.show();
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}
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if (!isStart && this._statusBarItem) {
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this._statusBarItem.dispose();
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this._statusBarItem = undefined;
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}
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}
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public async manuallyProvideToken() {
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const uriOrToken = await vscode.window.showInputBox({ prompt: 'Token', ignoreFocusOut: true });
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if (!uriOrToken) {
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onDidManuallyProvideToken.fire(undefined);
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return;
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}
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try {
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const uri = vscode.Uri.parse(uriOrToken.trim());
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if (!uri.scheme || uri.scheme === 'file') { throw new Error; }
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uriHandler.handleUri(uri);
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} catch (e) {
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// If it doesn't look like a URI, treat it as a token.
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Logger.info('Treating input as token');
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onDidManuallyProvideToken.fire(uriOrToken);
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}
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}
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private async getScopes(token: string): Promise<string[]> {
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try {
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Logger.info('Getting token scopes...');
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const result = await fetch('https://api.github.com', {
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headers: {
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Authorization: `token ${token}`,
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'User-Agent': 'Visual-Studio-Code'
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}
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});
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if (result.ok) {
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const scopes = result.headers.get('X-OAuth-Scopes');
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return scopes ? scopes.split(',').map(scope => scope.trim()) : [];
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} else {
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Logger.error(`Getting scopes failed: ${result.statusText}`);
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throw new Error(result.statusText);
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}
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} catch (ex) {
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Logger.error(ex.message);
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throw new Error(NETWORK_ERROR);
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}
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}
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public async getUserInfo(token: string): Promise<{ id: string, accountName: string }> {
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let result: Response;
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try {
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Logger.info('Getting user info...');
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result = await fetch('https://api.github.com/user', {
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headers: {
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Authorization: `token ${token}`,
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'User-Agent': 'Visual-Studio-Code'
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}
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});
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} catch (ex) {
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Logger.error(ex.message);
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throw new Error(NETWORK_ERROR);
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}
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if (result.ok) {
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const json = await result.json();
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Logger.info('Got account info!');
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return { id: json.id, accountName: json.login };
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} else {
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Logger.error(`Getting account info failed: ${result.statusText}`);
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throw new Error(result.statusText);
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}
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}
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public async checkIsEdu(token: string): Promise<void> {
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const nocors = await this.isNoCorsEnvironment();
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if (nocors) {
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return;
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}
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try {
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const result = await fetch('https://education.github.com/api/user', {
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headers: {
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Authorization: `token ${token}`,
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'faculty-check-preview': 'true',
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'User-Agent': 'Visual-Studio-Code'
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}
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});
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if (result.ok) {
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const json: { student: boolean, faculty: boolean } = await result.json();
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/* __GDPR__
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"session" : {
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"isEdu": { "classification": "NonIdentifiableDemographicInfo", "purpose": "FeatureInsight" }
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}
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*/
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this.telemetryReporter.sendTelemetryEvent('session', {
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isEdu: json.student
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? 'student'
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: json.faculty
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? 'faculty'
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: 'none'
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});
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}
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} catch (e) {
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// No-op
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}
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}
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}
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