gristlabs_grist-core/app/server/lib/FlexServer.ts
2023-12-11 09:07:35 -05:00

2368 lines
96 KiB
TypeScript

import {ApiError} from 'app/common/ApiError';
import {ICustomWidget} from 'app/common/CustomWidget';
import {delay} from 'app/common/delay';
import {DocCreationInfo} from 'app/common/DocListAPI';
import {encodeUrl, getSlugIfNeeded, GristDeploymentType, GristDeploymentTypes,
GristLoadConfig, IGristUrlState, isOrgInPathOnly, parseSubdomain,
sanitizePathTail} from 'app/common/gristUrls';
import {getOrgUrlInfo} from 'app/common/gristUrls';
import {isAffirmative, safeJsonParse} from 'app/common/gutil';
import {InstallProperties} from 'app/common/InstallAPI';
import {UserProfile} from 'app/common/LoginSessionAPI';
import {tbind} from 'app/common/tbind';
import * as version from 'app/common/version';
import {ApiServer, getOrgFromRequest} from 'app/gen-server/ApiServer';
import {Document} from "app/gen-server/entity/Document";
import {Organization} from "app/gen-server/entity/Organization";
import {Workspace} from 'app/gen-server/entity/Workspace';
import {Activations} from 'app/gen-server/lib/Activations';
import {DocApiForwarder} from 'app/gen-server/lib/DocApiForwarder';
import {getDocWorkerMap} from 'app/gen-server/lib/DocWorkerMap';
import {Doom} from 'app/gen-server/lib/Doom';
import {HomeDBManager} from 'app/gen-server/lib/HomeDBManager';
import {Housekeeper} from 'app/gen-server/lib/Housekeeper';
import {Usage} from 'app/gen-server/lib/Usage';
import {AccessTokens, IAccessTokens} from 'app/server/lib/AccessTokens';
import {attachAppEndpoint} from 'app/server/lib/AppEndpoint';
import {appSettings} from 'app/server/lib/AppSettings';
import {addRequestUser, getTransitiveHeaders, getUser, getUserId, isAnonymousUser,
isSingleUserMode, redirectToLoginUnconditionally} from 'app/server/lib/Authorizer';
import {redirectToLogin, RequestWithLogin, signInStatusMiddleware} from 'app/server/lib/Authorizer';
import {forceSessionChange} from 'app/server/lib/BrowserSession';
import {Comm} from 'app/server/lib/Comm';
import {create} from 'app/server/lib/create';
import {addDiscourseConnectEndpoints} from 'app/server/lib/DiscourseConnect';
import {addDocApiRoutes} from 'app/server/lib/DocApi';
import {DocManager} from 'app/server/lib/DocManager';
import {DocStorageManager} from 'app/server/lib/DocStorageManager';
import {DocWorker} from 'app/server/lib/DocWorker';
import {DocWorkerInfo, IDocWorkerMap} from 'app/server/lib/DocWorkerMap';
import {expressWrap, jsonErrorHandler, secureJsonErrorHandler} from 'app/server/lib/expressWrap';
import {Hosts, RequestWithOrg} from 'app/server/lib/extractOrg';
import {addGoogleAuthEndpoint} from "app/server/lib/GoogleAuth";
import {DocTemplate, GristLoginMiddleware, GristLoginSystem, GristServer,
RequestWithGrist} from 'app/server/lib/GristServer';
import {initGristSessions, SessionStore} from 'app/server/lib/gristSessions';
import {HostedStorageManager} from 'app/server/lib/HostedStorageManager';
import {IBilling} from 'app/server/lib/IBilling';
import {IDocStorageManager} from 'app/server/lib/IDocStorageManager';
import {INotifier} from 'app/server/lib/INotifier';
import log from 'app/server/lib/log';
import {getLoginSystem} from 'app/server/lib/logins';
import {IPermitStore} from 'app/server/lib/Permit';
import {getAppPathTo, getAppRoot, getUnpackedAppRoot} from 'app/server/lib/places';
import {addPluginEndpoints, limitToPlugins} from 'app/server/lib/PluginEndpoint';
import {PluginManager} from 'app/server/lib/PluginManager';
import * as ProcessMonitor from 'app/server/lib/ProcessMonitor';
import {adaptServerUrl, getOrgUrl, getOriginUrl, getScope, integerParam, isDefaultUser, isParameterOn, optIntegerParam,
optStringParam, RequestWithGristInfo, sendOkReply, stringArrayParam, stringParam, TEST_HTTPS_OFFSET,
trustOrigin} from 'app/server/lib/requestUtils';
import {ISendAppPageOptions, makeGristConfig, makeMessagePage, makeSendAppPage} from 'app/server/lib/sendAppPage';
import {getDatabaseUrl, listenPromise, timeoutReached} from 'app/server/lib/serverUtils';
import {Sessions} from 'app/server/lib/Sessions';
import * as shutdown from 'app/server/lib/shutdown';
import {TagChecker} from 'app/server/lib/TagChecker';
import {getTelemetryPrefs, ITelemetry} from 'app/server/lib/Telemetry';
import {startTestingHooks} from 'app/server/lib/TestingHooks';
import {getTestLoginSystem} from 'app/server/lib/TestLogin';
import {addUploadRoute} from 'app/server/lib/uploads';
import {buildWidgetRepository, getWidgetsInPlugins, IWidgetRepository} from 'app/server/lib/WidgetRepository';
import {setupLocale} from 'app/server/localization';
import axios from 'axios';
import * as cookie from 'cookie';
import express from 'express';
import * as fse from 'fs-extra';
import * as http from 'http';
import * as https from 'https';
import {i18n} from 'i18next';
import i18Middleware from "i18next-http-middleware";
import mapValues = require('lodash/mapValues');
import morganLogger from 'morgan';
import {AddressInfo} from 'net';
import fetch from 'node-fetch';
import * as path from 'path';
import * as serveStatic from "serve-static";
// Health checks are a little noisy in the logs, so we don't show them all.
// We show the first N health checks:
const HEALTH_CHECK_LOG_SHOW_FIRST_N = 10;
// And we show every Nth health check:
const HEALTH_CHECK_LOG_SHOW_EVERY_N = 100;
// DocID of Grist doc to collect the Welcome questionnaire responses, such
// as "GristNewUserInfo".
const DOC_ID_NEW_USER_INFO = process.env.DOC_ID_NEW_USER_INFO;
export interface FlexServerOptions {
dataDir?: string;
// Base domain for org hostnames, starting with ".". Defaults to the base domain of APP_HOME_URL.
baseDomain?: string;
// Base URL for plugins, if permitted. Defaults to APP_UNTRUSTED_URL.
pluginUrl?: string;
}
const noop: express.RequestHandler = (req, res, next) => next();
export class FlexServer implements GristServer {
public readonly create = create;
public tagChecker: TagChecker;
public app: express.Express;
public deps: Set<string> = new Set();
public appRoot: string;
public host: string;
public tag: string;
public info = new Array<[string, any]>();
public usage: Usage;
public housekeeper: Housekeeper;
public server: http.Server;
public httpsServer?: https.Server;
public settings?: Readonly<Record<string, unknown>>;
public worker: DocWorkerInfo;
public electronServerMethods: ElectronServerMethods;
public readonly docsRoot: string;
public readonly i18Instance: i18n;
private _activations: Activations;
private _comm: Comm;
private _deploymentType: GristDeploymentType;
private _dbManager: HomeDBManager;
private _defaultBaseDomain: string|undefined;
private _pluginUrl: string|undefined;
private _pluginUrlReady: boolean = false;
private _servesPlugins?: boolean;
private _bundledWidgets?: ICustomWidget[];
private _billing: IBilling;
private _instanceRoot: string;
private _docManager: DocManager;
private _docWorker: DocWorker;
private _hosts: Hosts;
private _pluginManager: PluginManager;
private _sessions: Sessions;
private _sessionStore: SessionStore;
private _storageManager: IDocStorageManager;
private _telemetry: ITelemetry;
private _processMonitorStop?: () => void; // Callback to stop the ProcessMonitor
private _docWorkerMap: IDocWorkerMap;
private _widgetRepository: IWidgetRepository;
private _notifier: INotifier;
private _accessTokens: IAccessTokens;
private _internalPermitStore: IPermitStore; // store for permits that stay within our servers
private _externalPermitStore: IPermitStore; // store for permits that pass through outside servers
private _disabled: boolean = false;
private _disableExternalStorage: boolean = false;
private _healthy: boolean = true; // becomes false if a serious error has occurred and
// server cannot do its work.
private _healthCheckCounter: number = 0;
private _hasTestingHooks: boolean = false;
private _loginMiddleware: GristLoginMiddleware;
private _userIdMiddleware: express.RequestHandler;
private _trustOriginsMiddleware: express.RequestHandler;
private _docPermissionsMiddleware: express.RequestHandler;
// This middleware redirects to signin/signup for anon, except on merged org or for
// a team site that allows anon access.
private _redirectToLoginWithExceptionsMiddleware: express.RequestHandler;
// This unconditionally redirects to signin/signup for anon, for pages where anon access
// is never desired.
private _redirectToLoginWithoutExceptionsMiddleware: express.RequestHandler;
// This can be called to do a redirect to signin/signup in a nuanced situation.
private _redirectToLoginUnconditionally: express.RequestHandler | null;
private _redirectToOrgMiddleware: express.RequestHandler;
private _redirectToHostMiddleware: express.RequestHandler;
private _getLoginRedirectUrl: (req: express.Request, target: URL) => Promise<string>;
private _getSignUpRedirectUrl: (req: express.Request, target: URL) => Promise<string>;
private _getLogoutRedirectUrl: (req: express.Request, nextUrl: URL) => Promise<string>;
private _sendAppPage: (req: express.Request, resp: express.Response, options: ISendAppPageOptions) => Promise<void>;
private _getLoginSystem?: () => Promise<GristLoginSystem>;
// Set once ready() is called
private _isReady: boolean = false;
constructor(public port: number, public name: string = 'flexServer',
public readonly options: FlexServerOptions = {}) {
this.app = express();
this.app.set('port', port);
this.appRoot = getAppRoot();
this.host = process.env.GRIST_HOST || "localhost";
log.info(`== Grist version is ${version.version} (commit ${version.gitcommit})`);
this.info.push(['appRoot', this.appRoot]);
// Initialize locales files.
this.i18Instance = setupLocale(this.appRoot);
if (Array.isArray(this.i18Instance.options.preload)) {
this.info.push(['i18:locale', this.i18Instance.options.preload.join(",")]);
}
if (Array.isArray(this.i18Instance.options.ns)) {
this.info.push(['i18:namespace', this.i18Instance.options.ns.join(",")]);
}
// Add language detection middleware.
this.app.use(i18Middleware.handle(this.i18Instance));
// This directory hold Grist documents.
let docsRoot = path.resolve((this.options && this.options.dataDir) ||
process.env.GRIST_DATA_DIR ||
getAppPathTo(this.appRoot, 'samples'));
// In testing, it can be useful to separate out document roots used
// by distinct FlexServers.
if (process.env.GRIST_TEST_ADD_PORT_TO_DOCS_ROOT === 'true') {
docsRoot = path.resolve(docsRoot, String(port));
}
// Create directory if it doesn't exist.
// TODO: track down all dependencies on 'samples' existing in tests and
// in dev environment, and remove them. Then it would probably be best
// to simply fail if the docs root directory does not exist.
fse.mkdirpSync(docsRoot);
this.docsRoot = fse.realpathSync(docsRoot);
this.info.push(['docsRoot', this.docsRoot]);
this._deploymentType = this.create.deploymentType();
if (process.env.GRIST_TEST_SERVER_DEPLOYMENT_TYPE) {
this._deploymentType = GristDeploymentTypes.check(process.env.GRIST_TEST_SERVER_DEPLOYMENT_TYPE);
}
const homeUrl = process.env.APP_HOME_URL;
// The "base domain" is only a thing if orgs are encoded as a subdomain.
if (process.env.GRIST_ORG_IN_PATH === 'true' || process.env.GRIST_SINGLE_ORG) {
this._defaultBaseDomain = options.baseDomain || (homeUrl && new URL(homeUrl).hostname);
} else {
this._defaultBaseDomain = options.baseDomain || (homeUrl && parseSubdomain(new URL(homeUrl).hostname).base);
}
this.info.push(['defaultBaseDomain', this._defaultBaseDomain]);
this._pluginUrl = options.pluginUrl || process.env.APP_UNTRUSTED_URL;
// The electron build is not supported at this time, but this stub
// implementation of electronServerMethods is present to allow kicking
// its tires.
let userConfig: any = {
recentItems: [],
};
this.electronServerMethods = {
async importDoc() { throw new Error('not implemented'); },
onDocOpen(cb) {
// currently only a stub.
cb('');
},
async getUserConfig() {
return userConfig;
},
async updateUserConfig(obj: any) {
userConfig = obj;
},
onBackupMade() {
log.info('backup skipped');
}
};
this.app.use((req, res, next) => {
(req as RequestWithGrist).gristServer = this;
next();
});
}
// Allow overridding the login system.
public setLoginSystem(loginSystem: () => Promise<GristLoginSystem>) {
this._getLoginSystem = loginSystem;
}
public getHost(): string {
return `${this.host}:${this.getOwnPort()}`;
}
// Get a url for this server, based on the protocol it speaks (http), the host it
// runs on, and the port it listens on. The url the client uses to communicate with
// the server may be different if there are intermediaries (such as a load-balancer
// terminating TLS).
public getOwnUrl(): string {
const port = this.getOwnPort();
return `http://${this.host}:${port}`;
}
/**
* Get a url for the home server api. Called without knowledge of a specific
* request, so will default to a generic url. Use of this method can render
* code incompatible with custom base domains (currently, sendgrid notifications
* via Notifier are incompatible for this reason).
*/
public getDefaultHomeUrl(): string {
const homeUrl = process.env.APP_HOME_URL || (this._has('api') && this.getOwnUrl());
if (!homeUrl) { throw new Error("need APP_HOME_URL"); }
return homeUrl;
}
/**
* Get a url for the home server api, adapting it to match the base domain in the
* requested url. This adaptation is important for cookie-based authentication.
*
* If relPath is given, returns that path relative to homeUrl. If omitted, note that
* getHomeUrl() will still return a URL ending in "/".
*/
public getHomeUrl(req: express.Request, relPath: string = ''): string {
// Get the default home url.
const homeUrl = new URL(relPath, this.getDefaultHomeUrl());
adaptServerUrl(homeUrl, req as RequestWithOrg);
return homeUrl.href;
}
/**
* Get a home url that is appropriate for the given document. For now, this
* returns a default that works for all documents. That could change in future,
* specifically with custom domains (perhaps we might limit which docs can be accessed
* based on domain).
*/
public async getHomeUrlByDocId(docId: string, relPath: string = ''): Promise<string> {
return new URL(relPath, this.getDefaultHomeUrl()).href;
}
// Get the port number the server listens on. This may be different from the port
// number the client expects when communicating with the server if there are intermediaries.
public getOwnPort(): number {
// Get the port from the server in case it was started with port 0.
return this.server ? (this.server.address() as AddressInfo).port : this.port;
}
/**
* Get a url to an org that should be accessible by all signed-in users. For now, this
* returns the base URL of the personal org (typically docs[-s]).
*/
public getMergedOrgUrl(req: RequestWithLogin, pathname: string = '/'): string {
return this._getOrgRedirectUrl(req, this._dbManager.mergedOrgDomain(), pathname);
}
public getPermitStore(): IPermitStore {
if (!this._internalPermitStore) { throw new Error('no permit store available'); }
return this._internalPermitStore;
}
public getExternalPermitStore(): IPermitStore {
if (!this._externalPermitStore) { throw new Error('no permit store available'); }
return this._externalPermitStore;
}
public getSessions(): Sessions {
if (!this._sessions) { throw new Error('no sessions available'); }
return this._sessions;
}
public getComm(): Comm {
if (!this._comm) { throw new Error('no Comm available'); }
return this._comm;
}
public getDeploymentType(): GristDeploymentType {
return this._deploymentType;
}
public getHosts(): Hosts {
if (!this._hosts) { throw new Error('no hosts available'); }
return this._hosts;
}
public getActivations(): Activations {
if (!this._activations) { throw new Error('no activations available'); }
return this._activations;
}
public getHomeDBManager(): HomeDBManager {
if (!this._dbManager) { throw new Error('no home db available'); }
return this._dbManager;
}
public getStorageManager(): IDocStorageManager {
if (!this._storageManager) { throw new Error('no storage manager available'); }
return this._storageManager;
}
public getTelemetry(): ITelemetry {
if (!this._telemetry) { throw new Error('no telemetry available'); }
return this._telemetry;
}
public getWidgetRepository(): IWidgetRepository {
if (!this._widgetRepository) { throw new Error('no widget repository available'); }
return this._widgetRepository;
}
public hasNotifier(): boolean {
return Boolean(this._notifier);
}
public getNotifier(): INotifier {
if (!this._notifier) { throw new Error('no notifier available'); }
return this._notifier;
}
public getAccessTokens() {
if (this._accessTokens) { return this._accessTokens; }
this.addDocWorkerMap();
const cli = this._docWorkerMap.getRedisClient();
this._accessTokens = new AccessTokens(cli);
return this._accessTokens;
}
public sendAppPage(req: express.Request, resp: express.Response, options: ISendAppPageOptions): Promise<void> {
if (!this._sendAppPage) { throw new Error('no _sendAppPage method available'); }
return this._sendAppPage(req, resp, options);
}
public addLogging() {
if (this._check('logging')) { return; }
if (process.env.GRIST_LOG_SKIP_HTTP) { return; }
// Add a timestamp token that matches exactly the formatting of non-morgan logs.
morganLogger.token('logTime', (req: Request) => log.timestamp());
// Add an optional gristInfo token that can replace the url, if the url is sensitive.
morganLogger.token('gristInfo', (req: RequestWithGristInfo) =>
req.gristInfo || req.originalUrl || req.url);
morganLogger.token('host', (req: express.Request) => req.get('host'));
const msg = ':logTime :host :method :gristInfo :status :response-time ms - :res[content-length]';
// In hosted Grist, render json so logs retain more organization.
function outputJson(tokens: any, req: any, res: any) {
return JSON.stringify({
timestamp: tokens.logTime(req, res),
method: tokens.method(req, res),
path: tokens.gristInfo(req, res),
status: tokens.status(req, res),
timeMs: parseFloat(tokens['response-time'](req, res)) || undefined,
contentLength: parseInt(tokens.res(req, res, 'content-length'), 10) || undefined,
host: tokens.host(req, res),
altSessionId: req.altSessionId,
});
}
this.app.use(morganLogger(process.env.GRIST_HOSTED_VERSION ? outputJson : msg, {
skip: this._shouldSkipRequestLogging.bind(this)
}));
}
public addHealthCheck() {
if (this._check('health')) { return; }
// Health check endpoint. if called with /hooks, testing hooks are required in order to be
// considered healthy. Testing hooks are used only in server started for tests, and
// /status/hooks allows the tests to wait for them to be ready.
// If db=1 query parameter is included, status will include the status of DB connection.
// If redis=1 query parameter is included, status will include the status of the Redis connection.
// If ready=1 query parameter is included, status will include whether the server is fully ready.
this.app.get('/status(/hooks)?', async (req, res) => {
const checks = new Map<string, Promise<boolean>|boolean>();
const timeout = optIntegerParam(req.query.timeout, 'timeout') || 10_000;
// Check that the given promise resolves with no error within our timeout.
const asyncCheck = async (promise: Promise<unknown>|undefined) => {
if (!promise || await timeoutReached(timeout, promise) === true) {
return false;
}
return promise.then(() => true, () => false); // Success => true, rejection => false
};
if (req.path.endsWith('/hooks')) {
checks.set('hooks', this._hasTestingHooks);
}
if (isParameterOn(req.query.db)) {
checks.set('db', asyncCheck(this._dbManager.connection.query('SELECT 1')));
}
if (isParameterOn(req.query.redis)) {
checks.set('redis', asyncCheck(this._docWorkerMap.getRedisClient()?.pingAsync()));
}
if (isParameterOn(req.query.ready)) {
checks.set('ready', this._isReady);
}
let extra = '';
let ok = true;
// If we had any extra check, collect their status to report them.
if (checks.size > 0) {
const results = await Promise.all(checks.values());
ok = ok && results.every(r => r === true);
const notes = Array.from(checks.keys(), (key, i) => `${key} ${results[i] ? 'ok' : 'not ok'}`);
extra = ` (${notes.join(", ")})`;
}
if (this._healthy && ok) {
this._healthCheckCounter++;
res.status(200).send(`Grist ${this.name} is alive${extra}.`);
} else {
this._healthCheckCounter = 0; // reset counter if we ever go internally unhealthy.
res.status(500).send(`Grist ${this.name} is unhealthy${extra}.`);
}
});
}
public denyRequestsIfNotReady() {
this.app.use((_req, res, next) => {
if (!this._isReady) {
// If ready() hasn't been called yet, don't continue, and
// give a clear error. This is to avoid exposing the service
// in a partially configured form.
return res.status(503).json({error: 'Service unavailable during start up'});
}
next();
});
}
public testAddRouter() {
if (this._check('router')) { return; }
this.app.get('/test/router', (req, res) => {
const act = optStringParam(req.query.act, 'act') || 'none';
const port = stringParam(req.query.port, 'port'); // port is trusted in mock; in prod it is not.
if (act === 'add' || act === 'remove') {
const host = `localhost:${port}`;
return res.status(200).json({
act,
host,
url: `http://${host}`,
message: 'ok',
});
}
return res.status(500).json({error: 'unrecognized action'});
});
}
public addCleanup() {
if (this._check('cleanup')) { return; }
// Set up signal handlers. Note that nodemon sends SIGUSR2 to restart node.
shutdown.cleanupOnSignals('SIGINT', 'SIGTERM', 'SIGHUP', 'SIGUSR2');
// We listen for uncaughtExceptions / unhandledRejections, but do exit when they happen. It is
// a strong recommendation, which seems best to follow
// (https://nodejs.org/docs/latest-v18.x/api/process.html#warning-using-uncaughtexception-correctly).
// We do try to shutdown cleanly (i.e. do any planned cleanup), which goes somewhat against
// the recommendation to do only synchronous work.
let counter = 0;
// Note that this event catches also 'unhandledRejection' (origin should be either
// 'uncaughtException' or 'unhandledRejection').
process.on('uncaughtException', (err, origin) => {
log.error(`UNHANDLED ERROR ${origin} (${counter}):`, err);
if (counter === 0) {
// Only call shutdown once. It's async and could in theory fail, in which case it would be
// another unhandledRejection, and would get caught and reported by this same handler.
void(shutdown.exit(1));
}
counter++;
});
}
public addTagChecker() {
if (this._check('tag', '!org')) { return; }
// Handle requests that start with /v/TAG/ and set .tag property on them.
this.tag = version.gitcommit;
this.info.push(['tag', this.tag]);
this.tagChecker = new TagChecker(this.tag);
this.app.use(this.tagChecker.inspectTag);
}
/**
* To allow routing to doc workers via the path, doc workers remove any
* path prefix of the form /dw/...../ if present. The prefix is not checked,
* just removed unconditionally.
* TODO: determine what the prefix should be, and check it, to catch bugs.
*/
public stripDocWorkerIdPathPrefixIfPresent() {
if (this._check('strip_dw', '!tag', '!org')) { return; }
this.app.use((req, resp, next) => {
const match = req.url.match(/^\/dw\/([-a-zA-Z0-9]+)([/?].*)?$/);
if (match) { req.url = sanitizePathTail(match[2]); }
next();
});
}
public addOrg() {
if (this._check('org', 'homedb', 'hosts')) { return; }
this.app.use(this._hosts.extractOrg);
}
public setDirectory() {
if (this._check('dir')) { return; }
process.chdir(getUnpackedAppRoot(this.appRoot));
}
public get instanceRoot() {
if (!this._instanceRoot) {
this._instanceRoot = path.resolve(process.env.GRIST_INST_DIR || this.appRoot);
this.info.push(['instanceRoot', this._instanceRoot]);
}
return this._instanceRoot;
}
public addStaticAndBowerDirectories() {
if (this._check('static_and_bower', 'dir')) { return; }
this.addTagChecker();
// Grist has static help files, which may be useful for standalone app,
// but for hosted grist the latest help is at support.getgrist.com. Redirect
// to this page for the benefit of crawlers which currently rank the static help
// page link highly for historic reasons.
this.app.use(/^\/help\//, expressWrap(async (req, res) => {
res.redirect('https://support.getgrist.com');
}));
// If there is a directory called "static_ext", serve material from there
// as well. This isn't used in grist-core but is handy for extensions such
// as an Electron app.
const staticExtDir = getAppPathTo(this.appRoot, 'static') + '_ext';
const staticExtApp = fse.existsSync(staticExtDir) ?
express.static(staticExtDir, serveAnyOrigin) : null;
const staticApp = express.static(getAppPathTo(this.appRoot, 'static'), serveAnyOrigin);
const bowerApp = express.static(getAppPathTo(this.appRoot, 'bower_components'), serveAnyOrigin);
if (process.env.GRIST_LOCALES_DIR) {
const locales = express.static(process.env.GRIST_LOCALES_DIR, serveAnyOrigin);
this.app.use("/locales", this.tagChecker.withTag(locales));
}
if (staticExtApp) { this.app.use(this.tagChecker.withTag(staticExtApp)); }
this.app.use(this.tagChecker.withTag(staticApp));
this.app.use(this.tagChecker.withTag(bowerApp));
}
// Some tests rely on testFOO.html files being served.
public addAssetsForTests() {
if (this._check('testAssets', 'dir')) { return; }
// Serve test[a-z]*.html for test purposes.
this.app.use(/^\/(test[a-z]*.html)$/i, expressWrap(async (req, res) =>
res.sendFile(req.params[0], {root: getAppPathTo(this.appRoot, 'static')})));
}
// Plugin operation relies currently on grist-plugin-api.js being available,
// and with Grist's static assets to be also available on the untrusted
// host. The assets should be available without version tags, but not
// at the root level - we nest them in /plugins/assets.
public async addAssetsForPlugins() {
if (this._check('pluginUntaggedAssets', 'dir')) { return; }
this.app.use(/^\/(grist-plugin-api.js)$/, expressWrap(async (req, res) =>
res.sendFile(req.params[0], {root: getAppPathTo(this.appRoot, 'static')})));
// Plugins get access to static resources without a tag
this.app.use(
'/plugins/assets',
limitToPlugins(this, express.static(getAppPathTo(this.appRoot, 'static'))));
this.app.use(
'/plugins/assets',
limitToPlugins(this, express.static(getAppPathTo(this.appRoot, 'bower_components'))));
// Serve custom-widget.html message for anyone.
this.app.use(/^\/(custom-widget.html)$/, expressWrap(async (req, res) =>
res.sendFile(req.params[0], {root: getAppPathTo(this.appRoot, 'static')})));
this.addOrg();
addPluginEndpoints(this, await this._addPluginManager());
// Serve bundled custom widgets on the plugin endpoint.
const places = getWidgetsInPlugins(this, '');
if (places.length > 0) {
// For all widgets served in place, replace any copies of
// grist-plugin-api.js with this app's version of it.
// This is perhaps a bit rude, but beats the alternative
// of either using inconsistent bundled versions, or
// requiring network access.
this.app.use(/^\/widgets\/.*\/(grist-plugin-api.js)$/, expressWrap(async (req, res) =>
res.sendFile(req.params[0], {root: getAppPathTo(this.appRoot, 'static')})));
}
for (const place of places) {
this.app.use(
'/widgets/' + place.pluginId, this.tagChecker.withTag(
limitToPlugins(this, express.static(place.dir, serveAnyOrigin))
)
);
}
}
// Prepare cache for managing org-to-host relationship.
public addHosts() {
if (this._check('hosts', 'homedb')) { return; }
this._hosts = new Hosts(this._defaultBaseDomain, this._dbManager, this);
}
public async initHomeDBManager() {
if (this._check('homedb')) { return; }
this._dbManager = new HomeDBManager();
this._dbManager.setPrefix(process.env.GRIST_ID_PREFIX || "");
await this._dbManager.connect();
await this._dbManager.initializeSpecialIds();
// Report which database we are using, without sensitive credentials.
this.info.push(['database', getDatabaseUrl(this._dbManager.connection.options, false)]);
// If the installation appears to be new, give it an id and a creation date.
this._activations = new Activations(this._dbManager);
await this._activations.current();
}
public addDocWorkerMap() {
if (this._check('map')) { return; }
this._docWorkerMap = getDocWorkerMap();
this._internalPermitStore = this._docWorkerMap.getPermitStore('internal');
this._externalPermitStore = this._docWorkerMap.getPermitStore('external');
}
// Set up the main express middleware used. For a single user setup, without logins,
// all this middleware is currently a no-op.
public addAccessMiddleware() {
if (this._check('middleware', 'map', 'config', isSingleUserMode() ? null : 'hosts')) { return; }
if (!isSingleUserMode()) {
const skipSession = appSettings.section('login').flag('skipSession').readBool({
envVar: 'GRIST_IGNORE_SESSION',
});
// Middleware to redirect landing pages to preferred host
this._redirectToHostMiddleware = this._hosts.redirectHost;
// Middleware to add the userId to the express request object.
this._userIdMiddleware = expressWrap(addRequestUser.bind(
null, this._dbManager, this._internalPermitStore,
{
overrideProfile: this._loginMiddleware.overrideProfile?.bind(this._loginMiddleware),
// Set this to false to stop Grist using a cookie for authentication purposes.
skipSession,
gristServer: this,
}
));
this._trustOriginsMiddleware = expressWrap(trustOriginHandler);
// middleware to authorize doc access to the app. Note that this requires the userId
// to be set on the request by _userIdMiddleware.
this._docPermissionsMiddleware = expressWrap((...args) => this._docWorker.assertDocAccess(...args));
this._redirectToLoginWithExceptionsMiddleware = redirectToLogin(true,
this._getLoginRedirectUrl,
this._getSignUpRedirectUrl,
this._dbManager);
this._redirectToLoginWithoutExceptionsMiddleware = redirectToLogin(false,
this._getLoginRedirectUrl,
this._getSignUpRedirectUrl,
this._dbManager);
this._redirectToLoginUnconditionally = redirectToLoginUnconditionally(this._getLoginRedirectUrl,
this._getSignUpRedirectUrl);
this._redirectToOrgMiddleware = tbind(this._redirectToOrg, this);
} else {
this._userIdMiddleware = noop;
this._trustOriginsMiddleware = noop;
// For standalone single-user Grist, documents are stored on-disk
// with their filename equal to the document title, no document
// aliases are possible, and there is no access control.
// The _docPermissionsMiddleware is a no-op.
// TODO We might no longer have any tests for isSingleUserMode, or modes of operation.
this._docPermissionsMiddleware = noop;
this._redirectToLoginWithExceptionsMiddleware = noop;
this._redirectToLoginWithoutExceptionsMiddleware = noop;
this._redirectToLoginUnconditionally = null; // there is no way to log in.
this._redirectToOrgMiddleware = noop;
this._redirectToHostMiddleware = noop;
}
}
/**
* Add middleware common to all API endpoints (including forwarding ones).
*/
public addApiMiddleware() {
if (this._check('api-mw', 'middleware')) { return; }
// API endpoints need req.userId and need to support requests from different subdomains.
this.app.use("/api", this._userIdMiddleware);
this.app.use("/api", this._trustOriginsMiddleware);
this.app.use("/api", noCaching);
}
/**
* Add error-handling middleware common to all API endpoints.
*/
public addApiErrorHandlers() {
if (this._check('api-error', 'api-mw')) { return; }
// add a final not-found handler for api
this.app.use("/api", (req, res) => {
res.status(404).send({error: `not found: ${req.originalUrl}`});
});
// Add a final error handler for /api endpoints that reports errors as JSON.
this.app.use('/api/auth', secureJsonErrorHandler);
this.app.use('/api', jsonErrorHandler);
}
public addHomeApi() {
if (this._check('api', 'homedb', 'json', 'api-mw')) { return; }
// ApiServer's constructor adds endpoints to the app.
// tslint:disable-next-line:no-unused-expression
new ApiServer(this, this.app, this._dbManager, this._widgetRepository = buildWidgetRepository(this));
}
public addBillingApi() {
if (this._check('billing-api', 'homedb', 'json', 'api-mw')) { return; }
this._getBilling();
this._billing.addEndpoints(this.app);
this._billing.addEventHandlers();
}
public async addBillingMiddleware() {
if (this._check('activation', 'homedb')) { return; }
this._getBilling();
await this._billing.addMiddleware?.(this.app);
}
/**
* Add a /api/log endpoint that simply outputs client errors to our
* logs. This is a minimal placeholder for a special-purpose
* service for dealing with client errors.
*/
public addLogEndpoint() {
if (this._check('log-endpoint', 'json', 'api-mw')) { return; }
this.app.post('/api/log', async (req, resp) => {
const mreq = req as RequestWithLogin;
log.rawWarn('client error', {
event: req.body.event,
docId: req.body.docId,
page: req.body.page,
browser: req.body.browser,
org: mreq.org,
email: mreq.user && mreq.user.loginEmail,
userId: mreq.userId,
altSessionId: mreq.altSessionId,
});
return resp.status(200).send();
});
}
public async addTelemetry() {
if (this._check('telemetry', 'homedb', 'json', 'api-mw')) { return; }
this._telemetry = this.create.Telemetry(this._dbManager, this);
this._telemetry.addEndpoints(this.app);
this._telemetry.addPages(this.app, [
this._redirectToHostMiddleware,
this._userIdMiddleware,
this._redirectToLoginWithoutExceptionsMiddleware,
]);
await this._telemetry.start();
// Start up a monitor for memory and cpu usage.
this._processMonitorStop = ProcessMonitor.start(this._telemetry);
}
public async close() {
this._processMonitorStop?.();
if (this.usage) { await this.usage.close(); }
if (this._hosts) { this._hosts.close(); }
if (this._dbManager) {
this._dbManager.removeAllListeners();
this._dbManager.flushDocAuthCache();
}
if (this.server) { this.server.close(); }
if (this.httpsServer) { this.httpsServer.close(); }
if (this.housekeeper) { await this.housekeeper.stop(); }
await this._shutdown();
if (this._accessTokens) { await this._accessTokens.close(); }
// Do this after _shutdown, since DocWorkerMap is used during shutdown.
if (this._docWorkerMap) { await this._docWorkerMap.close(); }
if (this._sessionStore) { await this._sessionStore.close(); }
}
public addDocApiForwarder() {
if (this._check('doc_api_forwarder', '!json', 'homedb', 'api-mw', 'map')) { return; }
const docApiForwarder = new DocApiForwarder(this._docWorkerMap, this._dbManager, this);
docApiForwarder.addEndpoints(this.app);
}
public addJsonSupport() {
if (this._check('json')) { return; }
this.app.use(express.json({limit: '1mb'})); // Increase from the default 100kb
}
public addSessions() {
if (this._check('sessions', 'config')) { return; }
this.addTagChecker();
this.addOrg();
// Create the sessionStore and related objects.
const {sessions, sessionMiddleware, sessionStore} = initGristSessions(getUnpackedAppRoot(this.instanceRoot), this);
this.app.use(sessionMiddleware);
this.app.use(signInStatusMiddleware);
// Create an endpoint for making cookies during testing.
this.app.get('/test/session', async (req, res) => {
const mreq = req as RequestWithLogin;
forceSessionChange(mreq.session);
res.status(200).send(`Grist ${this.name} is alive and is interested in you.`);
});
this._sessions = sessions;
this._sessionStore = sessionStore;
}
// Close connections and stop accepting new connections. Remove server from any lists
// it may be in.
public async stopListening(mode: 'crash'|'clean' = 'clean') {
if (!this._disabled) {
if (mode === 'clean') {
await this._shutdown();
this._disabled = true;
} else {
this._disabled = true;
if (this._comm) {
this._comm.setServerActivation(false);
this._comm.destroyAllClients();
}
}
this.server.close();
if (this.httpsServer) { this.httpsServer.close(); }
}
}
public async createWorkerUrl(): Promise<{url: string, host: string}> {
if (!process.env.GRIST_ROUTER_URL) {
throw new Error('No service available to create worker url');
}
const w = await axios.get(process.env.GRIST_ROUTER_URL,
{params: {act: 'add', port: this.getOwnPort()}});
log.info(`DocWorker registered itself via ${process.env.GRIST_ROUTER_URL} as ${w.data.url}`);
const statusUrl = `${w.data.url}/status`;
// We now wait for the worker to be available from the url that clients will
// use to connect to it. This may take some time. The main delay is the
// new target group and load balancer rule taking effect - typically 10-20 seconds.
// If we don't wait, the worker will end up registered for work and clients
// could end up trying to reach it to open documents - but the url they have
// won't work.
for (let tries = 0; tries < 600; tries++) {
await delay(1000);
try {
await axios.get(statusUrl);
return w.data;
} catch (err) {
log.debug(`While waiting for ${statusUrl} got error ${(err as Error).message}`);
}
}
throw new Error(`Cannot connect to ${statusUrl}`);
}
// Accept new connections again. Add server to any lists it needs to be in to get work.
public async restartListening() {
if (!this._docWorkerMap) { throw new Error('expected to have DocWorkerMap'); }
await this.stopListening('clean');
if (this._disabled) {
if (this._storageManager) {
this._storageManager.testReopenStorage();
}
this._comm.setServerActivation(true);
if (this.worker) {
await this._startServers(this.server, this.httpsServer, this.name, this.port, false);
await this._addSelfAsWorker(this._docWorkerMap);
}
this._disabled = false;
}
}
public async addLandingPages() {
// TODO: check if isSingleUserMode() path can be removed from this method
if (this._check('landing', 'map', isSingleUserMode() ? null : 'homedb')) { return; }
this.addSessions();
// Initialize _sendAppPage helper.
this._sendAppPage = makeSendAppPage({
server: this,
staticDir: getAppPathTo(this.appRoot, 'static'),
tag: this.tag,
testLogin: allowTestLogin(),
baseDomain: this._defaultBaseDomain,
});
const forceLogin = appSettings.section('login').flag('forced').readBool({
envVar: 'GRIST_FORCE_LOGIN',
});
const forcedLoginMiddleware = forceLogin ? this._redirectToLoginWithoutExceptionsMiddleware : noop;
const welcomeNewUser: express.RequestHandler = isSingleUserMode() ?
(req, res, next) => next() :
expressWrap(async (req, res, next) => {
const mreq = req as RequestWithLogin;
const user = getUser(req);
if (user && user.isFirstTimeUser) {
log.debug(`welcoming user: ${user.name}`);
// Reset isFirstTimeUser flag.
await this._dbManager.updateUser(user.id, {isFirstTimeUser: false});
// This is a good time to set some other flags, for showing a popup with welcome question(s)
// to this new user and recording their sign-up with Google Tag Manager. These flags are also
// scoped to the user, but isFirstTimeUser has a dedicated DB field because it predates userPrefs.
// Note that the updateOrg() method handles all levels of prefs (for user, user+org, or org).
await this._dbManager.updateOrg(getScope(req), 0, {userPrefs: {
showNewUserQuestions: true,
recordSignUpEvent: true
}});
// Give a chance to the login system to react to the first visit after signup.
this._loginMiddleware.onFirstVisit?.(req);
// If we need to copy an unsaved document or template as part of sign-up, do so now
// and redirect to it.
const docId = await this._maybeCopyDocToHomeWorkspace(mreq, res);
if (docId) {
return res.redirect(this.getMergedOrgUrl(mreq, `/doc/${docId}`));
}
const domain = mreq.org ?? null;
if (!process.env.GRIST_SINGLE_ORG && this._dbManager.isMergedOrg(domain)) {
// We're logging in for the first time on the merged org; if the user has
// access to other team sites, forward the user to a page that lists all
// the teams they have access to.
const result = await this._dbManager.getMergedOrgs(user.id, user.id, domain);
const orgs = this._dbManager.unwrapQueryResult(result);
if (orgs.length > 1 && mreq.path === '/') {
// Only forward if the request is for the home page.
return res.redirect(this.getMergedOrgUrl(mreq, '/welcome/teams'));
}
}
}
if (mreq.org && mreq.org.startsWith('o-')) {
// We are on a team site without a custom subdomain.
const orgInfo = this._dbManager.unwrapQueryResult(await this._dbManager.getOrg({userId: user.id}, mreq.org));
// If the user is a billing manager for the org, and the org
// is supposed to have a custom subdomain, forward the user
// to a page to set it.
// TODO: this is more or less a hack for AppSumo signup flow,
// and could be removed if/when signup flow is revamped.
// If "welcomeNewUser" is ever added to billing pages, we'd need
// to avoid a redirect loop.
if (orgInfo.billingAccount.isManager && orgInfo.billingAccount.product.features.vanityDomain) {
const prefix = isOrgInPathOnly(req.hostname) ? `/o/${mreq.org}` : '';
return res.redirect(`${prefix}/billing/payment?billingTask=signUpLite`);
}
}
next();
});
attachAppEndpoint({
app: this.app,
middleware: [
this._redirectToHostMiddleware,
this._userIdMiddleware,
forcedLoginMiddleware,
this._redirectToLoginWithExceptionsMiddleware,
this._redirectToOrgMiddleware,
welcomeNewUser
],
docMiddleware: [
// Same as middleware, except without login redirect middleware.
this._redirectToHostMiddleware,
this._userIdMiddleware,
forcedLoginMiddleware,
this._redirectToOrgMiddleware,
welcomeNewUser
],
forceLogin: this._redirectToLoginUnconditionally,
docWorkerMap: isSingleUserMode() ? null : this._docWorkerMap,
sendAppPage: this._sendAppPage,
dbManager: this._dbManager,
plugins : (await this._addPluginManager()).getPlugins(),
gristServer: this,
});
}
/**
* Load user config file from standard location (if present).
*
* Note that the user config file doesn't do anything today, but may be useful in
* the future for configuring things that don't fit well into environment variables.
*
* TODO: Revisit this, and update `GristServer.settings` type to match the expected shape
* of config.json. (ts-interface-checker could be useful here for runtime validation.)
*/
public async loadConfig() {
if (this._check('config')) { return; }
const settingsPath = path.join(this.instanceRoot, 'config.json');
if (await fse.pathExists(settingsPath)) {
log.info(`Loading config from ${settingsPath}`);
this.settings = JSON.parse(await fse.readFile(settingsPath, 'utf8'));
} else {
log.info(`Loading empty config because ${settingsPath} missing`);
this.settings = {};
}
// TODO: We could include a third mock provider of login/logout URLs for better tests. Or we
// could create a mock SAML identity provider for testing this using the SAML flow.
const loginSystem = await this.resolveLoginSystem();
this._loginMiddleware = await loginSystem.getMiddleware(this);
this._getLoginRedirectUrl = tbind(this._loginMiddleware.getLoginRedirectUrl, this._loginMiddleware);
this._getSignUpRedirectUrl = tbind(this._loginMiddleware.getSignUpRedirectUrl, this._loginMiddleware);
this._getLogoutRedirectUrl = tbind(this._loginMiddleware.getLogoutRedirectUrl, this._loginMiddleware);
const wildcardMiddleware = this._loginMiddleware.getWildcardMiddleware?.();
if (wildcardMiddleware?.length) {
this.app.use(wildcardMiddleware);
}
}
public addComm() {
if (this._check('comm', 'start', 'homedb', 'config')) { return; }
this._comm = new Comm(this.server, {
settings: this.settings,
sessions: this._sessions,
hosts: this._hosts,
loginMiddleware: this._loginMiddleware,
httpsServer: this.httpsServer,
i18Instance: this.i18Instance
});
}
/**
* Add endpoint that servers a javascript file with various api keys that
* are used by the client libraries.
*/
public addClientSecrets() {
if (this._check('clientSecret')) { return; }
this.app.get('/client-secret.js', expressWrap(async (req, res) => {
const config = this.getGristConfig();
// Currently we are exposing only Google keys.
// Those keys are eventually visible by the client, but should be usable
// only from Grist's domains.
const secrets = {
googleClientId: config.googleClientId,
};
res.set('Content-Type', 'application/javascript');
res.status(200);
res.send(`
window.gristClientSecret = ${JSON.stringify(secrets)}
`);
}));
}
public async addLoginRoutes() {
if (this._check('login', 'org', 'sessions', 'homedb', 'hosts')) { return; }
// TODO: We do NOT want Comm here at all, it's only being used for handling sessions, which
// should be factored out of it.
this.addComm();
const signinMiddleware = this._loginMiddleware.getLoginOrSignUpMiddleware ?
this._loginMiddleware.getLoginOrSignUpMiddleware() :
[];
this.app.get('/login', ...signinMiddleware, expressWrap(this._redirectToLoginOrSignup.bind(this, {
signUp: false,
})));
this.app.get('/signup', ...signinMiddleware, expressWrap(this._redirectToLoginOrSignup.bind(this, {
signUp: true,
})));
this.app.get('/signin', ...signinMiddleware, expressWrap(this._redirectToLoginOrSignup.bind(this, {})));
if (allowTestLogin()) {
// This is an endpoint for the dev environment that lets you log in as anyone.
// For a standard dev environment, it will be accessible at localhost:8080/test/login
// and localhost:8080/o/<org>/test/login. Only available when GRIST_TEST_LOGIN is set.
// Handy when without network connectivity to reach Cognito.
log.warn("Adding a /test/login endpoint because GRIST_TEST_LOGIN is set. " +
"Users will be able to login as anyone.");
this.app.get('/test/login', expressWrap(async (req, res) => {
log.warn("Serving unauthenticated /test/login endpoint, made available because GRIST_TEST_LOGIN is set.");
// Query parameter is called "username" for compatibility with Cognito.
const email = optStringParam(req.query.username, 'username');
if (email) {
const redirect = optStringParam(req.query.next, 'next');
const profile: UserProfile = {
email,
name: optStringParam(req.query.name, 'name') || email,
};
const url = new URL(redirect || getOrgUrl(req));
// Make sure we update session for org we'll be redirecting to.
const {org} = await this._hosts.getOrgInfoFromParts(url.hostname, url.pathname);
const scopedSession = this._sessions.getOrCreateSessionFromRequest(req, { org });
await scopedSession.updateUserProfile(req, profile);
this._sessions.clearCacheIfNeeded({email, org});
if (redirect) { return res.redirect(redirect); }
}
res.send(`<!doctype html>
<html><body>
<div class="modal-content-desktop">
<h1>A Very Credulous Login Page</h1>
<p>
A minimal login screen to facilitate testing.
I'll believe anything you tell me.
</p>
<form>
<div>Email <input type=text name=username placeholder=email /></div>
<div>Name <input type=text name=name placeholder=name /></div>
<div>Dummy password <input type=text name=password placeholder=unused ></div>
<input type=hidden name=next value="${req.query.next || ''}">
<div><input type=submit name=signInSubmitButton value=login></div>
</form>
</div>
</body></html>
`);
}));
}
this.app.get('/logout', ...this._logoutMiddleware(), expressWrap(async (req, resp) => {
const signedOutUrl = new URL(getOrgUrl(req) + 'signed-out');
const redirectUrl = await this._getLogoutRedirectUrl(req, signedOutUrl);
resp.redirect(redirectUrl);
}));
// Add a static "signed-out" page. This is where logout typically lands (e.g. after redirecting
// through SAML).
this.app.get('/signed-out', expressWrap((req, resp) =>
this._sendAppPage(req, resp, {path: 'error.html', status: 200, config: {errPage: 'signed-out'}})));
const comment = await this._loginMiddleware.addEndpoints(this.app);
this.info.push(['loginMiddlewareComment', comment]);
addDiscourseConnectEndpoints(this.app, {
userIdMiddleware: this._userIdMiddleware,
redirectToLogin: this._redirectToLoginWithoutExceptionsMiddleware,
});
}
public async addTestingHooks(workerServers?: FlexServer[]) {
if (process.env.GRIST_TESTING_SOCKET) {
await startTestingHooks(process.env.GRIST_TESTING_SOCKET, this.port, this._comm, this,
workerServers || []);
this._hasTestingHooks = true;
}
}
// Returns a Map from docId to number of connected clients for each doc.
public async getDocClientCounts(): Promise<Map<string, number>> {
return this._docManager ? this._docManager.getDocClientCounts() : new Map();
}
// allow the document manager to be specified externally, for convenience in testing.
public testSetDocManager(docManager: DocManager) {
this._docManager = docManager;
}
// Add document-related endpoints and related support.
public async addDoc() {
this._check('doc', 'start', 'tag', 'json', isSingleUserMode() ?
null : 'homedb', 'api-mw', 'map', 'telemetry');
// add handlers for cleanup, if we are in charge of the doc manager.
if (!this._docManager) { this.addCleanup(); }
await this.loadConfig();
this.addComm();
await this.create.configure?.();
if (!isSingleUserMode()) {
const externalStorage = appSettings.section('externalStorage');
const haveExternalStorage = Object.values(externalStorage.nested)
.some(storage => storage.flag('active').getAsBool());
const disabled = externalStorage.flag('disable')
.read({ envVar: 'GRIST_DISABLE_S3' }).getAsBool();
if (disabled || !haveExternalStorage) {
this._disableExternalStorage = true;
externalStorage.flag('active').set(false);
}
await this.create.checkBackend?.();
const workers = this._docWorkerMap;
const docWorkerId = await this._addSelfAsWorker(workers);
const storageManager = new HostedStorageManager(this.docsRoot, docWorkerId, this._disableExternalStorage, workers,
this._dbManager, this.create);
this._storageManager = storageManager;
} else {
const samples = getAppPathTo(this.appRoot, 'public_samples');
const storageManager = new DocStorageManager(this.docsRoot, samples, this._comm, this);
this._storageManager = storageManager;
}
const pluginManager = await this._addPluginManager();
this._docManager = this._docManager || new DocManager(this._storageManager, pluginManager,
this._dbManager, this);
const docManager = this._docManager;
shutdown.addCleanupHandler(null, this._shutdown.bind(this), 25000, 'FlexServer._shutdown');
if (!isSingleUserMode()) {
this._comm.registerMethods({
openDoc: docManager.openDoc.bind(docManager),
});
this._serveDocPage();
}
// Attach docWorker endpoints and Comm methods.
const docWorker = new DocWorker(this._dbManager, {comm: this._comm, gristServer: this});
this._docWorker = docWorker;
// Register the websocket comm functions associated with the docworker.
docWorker.registerCommCore();
docWorker.registerCommPlugin();
// Doc-specific endpoints require authorization; collect the relevant middleware in one list.
const docAccessMiddleware = [
this._userIdMiddleware,
this._docPermissionsMiddleware,
this.tagChecker.requireTag
];
this._addSupportPaths(docAccessMiddleware);
if (!isSingleUserMode()) {
addDocApiRoutes(this.app, docWorker, this._docWorkerMap, docManager, this._dbManager, this);
}
}
public disableExternalStorage() {
if (this.deps.has('doc')) {
throw new Error('disableExternalStorage called too late');
}
this._disableExternalStorage = true;
}
public addAccountPage() {
const middleware = [
this._redirectToHostMiddleware,
this._userIdMiddleware,
this._redirectToLoginWithoutExceptionsMiddleware
];
this.app.get('/account', ...middleware, expressWrap(async (req, resp) => {
return this._sendAppPage(req, resp, {path: 'app.html', status: 200, config: {}});
}));
const createDoom = async (req: express.Request) => {
const dbManager = this.getHomeDBManager();
const permitStore = this.getPermitStore();
const notifier = this.getNotifier();
const loginSystem = await this.resolveLoginSystem();
const homeUrl = this.getHomeUrl(req).replace(/\/$/, '');
return new Doom(dbManager, permitStore, notifier, loginSystem, homeUrl);
};
if (isAffirmative(process.env.GRIST_ACCOUNT_CLOSE)) {
this.app.delete('/api/doom/account', expressWrap(async (req, resp) => {
// Make sure we have a valid user authenticated user here.
const userId = getUserId(req);
// Make sure we are deleting the correct user account (and not the anonymous user)
const requestedUser = integerParam(req.query.userid, 'userid');
if (requestedUser !== userId || isAnonymousUser(req)) {
// This probably shouldn't happen, but if user has already deleted the account and tries to do it
// once again in a second tab, we might end up here. In that case we are returning false to indicate
// that account wasn't deleted.
return resp.status(200).json(false);
}
// We are a valid user, we can proceed with the deletion. Note that we will
// delete user as an admin, as we need to remove other resources that user
// might not have access to.
// Reuse Doom cli tool for account deletion. It won't allow to delete account if it has access
// to other (not public) team sites.
const doom = await createDoom(req);
await doom.deleteUser(userId);
this.getTelemetry().logEvent(req as RequestWithLogin, 'deletedAccount');
return resp.status(200).json(true);
}));
this.app.get('/account-deleted', ...this._logoutMiddleware(), expressWrap((req, resp) => {
return this._sendAppPage(req, resp, {path: 'error.html', status: 200, config: {errPage: 'account-deleted'}});
}));
this.app.delete('/api/doom/org', expressWrap(async (req, resp) => {
const mreq = req as RequestWithLogin;
const orgDomain = getOrgFromRequest(req);
if (!orgDomain) { throw new ApiError("Cannot determine organization", 400); }
if (this._dbManager.isMergedOrg(orgDomain)) {
throw new ApiError("Cannot delete a personal site", 400);
}
// Get org from the server.
const query = await this._dbManager.getOrg(getScope(mreq), orgDomain);
const org = this._dbManager.unwrapQueryResult(query);
if (!org || org.ownerId) {
// This shouldn't happen, but just in case test it.
throw new ApiError("Cannot delete an org with an owner", 400);
}
if (!org.billingAccount.isManager) {
throw new ApiError("Only billing manager can delete a team site", 403);
}
// Reuse Doom cli tool for org deletion. Note, this removes everything as a super user.
const doom = await createDoom(req);
await doom.deleteOrg(org.id);
this.getTelemetry().logEvent(req as RequestWithLogin, 'deletedSite', {
full: {
siteId: org.id,
userId: mreq.userId,
},
});
return resp.status(200).send();
}));
}
}
public addBillingPages() {
const middleware = [
this._redirectToHostMiddleware,
this._userIdMiddleware,
this._redirectToLoginWithoutExceptionsMiddleware
];
this._getBilling();
this._billing.addPages(this.app, middleware);
}
/**
* Add billing webhooks. Strip signatures sign the raw body of the message, so
* we need to get these webhooks in before the bodyParser is added to parse json.
*/
public addEarlyWebhooks() {
if (this._check('webhooks', 'homedb')) { return; }
if (this.deps.has('json')) {
throw new Error('addEarlyWebhooks called too late');
}
this._getBilling();
this._billing.addWebhooks(this.app);
}
public addWelcomePaths() {
const middleware = [
this._redirectToHostMiddleware,
this._userIdMiddleware,
this._redirectToLoginWithoutExceptionsMiddleware,
];
// These are some special-purpose welcome pages, with no middleware.
this.app.get(/\/welcome\/(signup|verify|teams|select-account)/, expressWrap(async (req, resp, next) => {
return this._sendAppPage(req, resp, {path: 'app.html', status: 200, config: {}, googleTagManager: 'anon'});
}));
/**
* A nuanced redirecting endpoint. For example, on docs.getgrist.com it does:
* 1) If logged in and no team site -> https://docs.getgrist.com/
* 2) If logged in and has team sites -> https://docs.getgrist.com/welcome/teams
* 3) If logged out but has a cookie -> /login, then 1 or 2
* 4) If entirely unknown -> /signup
*/
this.app.get('/welcome/start', [
this._redirectToHostMiddleware,
this._userIdMiddleware,
], expressWrap(async (req, resp, next) => {
if (isAnonymousUser(req)) {
return this._redirectToLoginOrSignup({
nextUrl: new URL(getOrgUrl(req, '/welcome/start')),
}, req, resp);
}
await this._redirectToHomeOrWelcomePage(req as RequestWithLogin, resp);
}));
/**
* Like /welcome/start, but doesn't redirect anonymous users to sign in.
*
* Used by the client when the last site the user visited is unknown, and
* a suitable site is needed for the home page.
*
* For example, on templates.getgrist.com it does:
* 1) If logged in and no team site -> https://docs.getgrist.com/
* 2) If logged in and has team sites -> https://docs.getgrist.com/welcome/teams
* 3) If logged out -> https://docs.getgrist.com/
*/
this.app.get('/welcome/home', [
this._redirectToHostMiddleware,
this._userIdMiddleware,
], expressWrap(async (req, resp) => {
const mreq = req as RequestWithLogin;
if (isAnonymousUser(req)) {
return resp.redirect(this.getMergedOrgUrl(mreq));
}
await this._redirectToHomeOrWelcomePage(mreq, resp, {redirectToMergedOrg: true});
}));
this.app.post('/welcome/info', ...middleware, expressWrap(async (req, resp, next) => {
const userId = getUserId(req);
const user = getUser(req);
const useCases = stringArrayParam(req.body.use_cases, 'use_cases');
const useOther = stringParam(req.body.use_other, 'use_other');
const row = {
UserID: userId,
Name: user.name,
Email: user.loginEmail,
use_cases: ['L', ...useCases],
use_other: useOther,
};
this._recordNewUserInfo(row)
.catch(e => {
// If we failed to record, at least log the data, so we could potentially recover it.
log.rawWarn(`Failed to record new user info: ${e.message}`, {newUserQuestions: row});
});
const nonOtherUseCases = useCases.filter(useCase => useCase !== 'Other');
for (const useCase of [...nonOtherUseCases, ...(useOther ? [`Other - ${useOther}`] : [])]) {
this.getTelemetry().logEvent(req as RequestWithLogin, 'answeredUseCaseQuestion', {
full: {
userId,
useCase,
},
});
}
resp.status(200).send();
}), jsonErrorHandler); // Add a final error handler that reports errors as JSON.
}
public finalizeEndpoints() {
this.addApiErrorHandlers();
// add a final non-found handler for other content.
this.app.use("/", expressWrap((req, resp) => {
if (this._sendAppPage) {
return this._sendAppPage(req, resp, {path: 'error.html', status: 404, config: {errPage: 'not-found'}});
} else {
return resp.status(404).json({error: 'not found'});
}
}));
// add a final error handler
this.app.use(async (err: any, req: express.Request, resp: express.Response, next: express.NextFunction) => {
// Delegate to default error handler when headers have already been sent, as express advises
// at https://expressjs.com/en/guide/error-handling.html#the-default-error-handler.
// Also delegates if no _sendAppPage method has been configured.
if (resp.headersSent || !this._sendAppPage) { return next(err); }
try {
const errPage = (
err.status === 403 ? 'access-denied' :
err.status === 404 ? 'not-found' :
'other-error'
);
const config = {errPage, errMessage: err.message || err};
await this._sendAppPage(req, resp, {path: 'error.html', status: err.status || 400, config});
} catch (error) {
return next(error);
}
});
}
/**
* Check whether there's a local plugin port.
*/
public servesPlugins() {
if (this._servesPlugins === undefined) {
throw new Error('do not know if server will serve plugins');
}
return this._servesPlugins;
}
/**
* Declare that there will be a local plugin port.
*/
public setServesPlugins(flag: boolean) {
this._servesPlugins = flag;
}
/**
* Get the base URL for plugins. Throws an error if the URL is not
* yet available.
*/
public getPluginUrl() {
if (!this._pluginUrlReady) {
throw new Error('looked at plugin url too early');
}
return this._pluginUrl;
}
public getPlugins() {
if (!this._pluginManager) {
throw new Error('plugin manager not available');
}
return this._pluginManager.getPlugins();
}
public async finalizePlugins(userPort: number|null) {
if (isAffirmative(process.env.GRIST_TRUST_PLUGINS)) {
this._pluginUrl = this.getDefaultHomeUrl();
} else if (userPort !== null) {
// If plugin content is served from same host but on different port,
// run webserver on that port
const ports = await this.startCopy('pluginServer', userPort);
// If Grist is running on a desktop, directly on the host, it
// can be convenient to leave the user port free for the OS to
// allocate by using GRIST_UNTRUSTED_PORT=0. But we do need to
// remember how to contact it.
if (process.env.APP_UNTRUSTED_URL === undefined) {
const url = new URL(this.getOwnUrl());
url.port = String(userPort || ports.serverPort);
this._pluginUrl = url.href;
}
}
this.info.push(['pluginUrl', this._pluginUrl]);
this.info.push(['willServePlugins', this._servesPlugins]);
this._pluginUrlReady = true;
const repo = buildWidgetRepository(this, { localOnly: true });
this._bundledWidgets = await repo.getWidgets();
}
public getBundledWidgets(): ICustomWidget[] {
if (!this._bundledWidgets) {
throw new Error('bundled widgets accessed too early');
}
return this._bundledWidgets;
}
public summary() {
for (const [label, value] of this.info) {
log.info("== %s: %s", label, value);
}
for (const item of appSettings.describeAll()) {
const txt =
((item.value !== undefined) ? String(item.value) : '-') +
(item.foundInEnvVar ? ` [${item.foundInEnvVar}]` : '') +
(item.usedDefault ? ' [default]' : '') +
((item.wouldFindInEnvVar && !item.foundInEnvVar) ? ` [${item.wouldFindInEnvVar}]` : '');
log.info("== %s: %s", item.name, txt);
}
}
public ready() {
this._isReady = true;
}
public checkOptionCombinations() {
// Check for some bad combinations we should warn about.
const allowedWebhookDomains = appSettings.section('integrations').flag('allowedWebhookDomains').readString({
envVar: 'ALLOWED_WEBHOOK_DOMAINS',
});
const proxy = appSettings.section('integrations').flag('proxy').readString({
envVar: 'GRIST_HTTPS_PROXY',
});
// If all webhook targets are accepted, and no proxy is defined, issue
// a warning. This warning can be removed by explicitly setting the proxy
// to the empty string.
if (allowedWebhookDomains === '*' && proxy === undefined) {
log.warn("Setting an ALLOWED_WEBHOOK_DOMAINS wildcard without a GRIST_HTTPS_PROXY exposes your internal network");
}
}
public async start() {
if (this._check('start')) { return; }
const servers = this._createServers();
this.server = servers.server;
this.httpsServer = servers.httpsServer;
await this._startServers(this.server, this.httpsServer, this.name, this.port, true);
}
public addNotifier() {
if (this._check('notifier', 'start', 'homedb')) { return; }
// TODO: make Notifier aware of base domains, rather than sending emails with default
// base domain.
// Most notifications are ultimately triggered by requests with a base domain in them,
// and all that is needed is a refactor to pass that info along. But there is also the
// case of notification(s) from stripe. May need to associate a preferred base domain
// with org/user and persist that?
this._notifier = this.create.Notifier(this._dbManager, this);
}
public getGristConfig(): GristLoadConfig {
return makeGristConfig({
homeUrl: this.getDefaultHomeUrl(),
extra: {},
baseDomain: this._defaultBaseDomain,
});
}
/**
* Get a url for a team site.
*/
public async getOrgUrl(orgKey: string|number): Promise<string> {
const org = await this.getOrg(orgKey);
return this.getResourceUrl(org);
}
public async getOrg(orgKey: string|number) {
if (!this._dbManager) { throw new Error('database missing'); }
const org = await this._dbManager.getOrg({
userId: this._dbManager.getPreviewerUserId(),
showAll: true
}, orgKey);
return this._dbManager.unwrapQueryResult(org);
}
/**
* Get a url for an organization, workspace, or document.
*/
public async getResourceUrl(resource: Organization|Workspace|Document,
purpose?: 'api'|'html'): Promise<string> {
if (!this._dbManager) { throw new Error('database missing'); }
const gristConfig = this.getGristConfig();
const state: IGristUrlState = {};
let org: Organization;
if (resource instanceof Organization) {
org = resource;
} else if (resource instanceof Workspace) {
org = resource.org;
state.ws = resource.id;
} else {
org = resource.workspace.org;
state.doc = resource.urlId || resource.id;
state.slug = getSlugIfNeeded(resource);
}
state.org = this._dbManager.normalizeOrgDomain(org.id, org.domain, org.ownerId);
state.api = purpose === 'api';
if (!gristConfig.homeUrl) { throw new Error('Computing a resource URL requires a home URL'); }
return encodeUrl(gristConfig, state, new URL(gristConfig.homeUrl));
}
public addUsage() {
if (this._check('usage', 'start', 'homedb')) { return; }
this.usage = new Usage(this._dbManager);
}
public async addHousekeeper() {
if (this._check('housekeeper', 'start', 'homedb', 'map', 'json', 'api-mw')) { return; }
const store = this._docWorkerMap;
this.housekeeper = new Housekeeper(this._dbManager, this, this._internalPermitStore, store);
this.housekeeper.addEndpoints(this.app);
await this.housekeeper.start();
}
public async startCopy(name2: string, port2: number): Promise<{
serverPort: number,
httpsServerPort?: number,
}>{
const servers = this._createServers();
return this._startServers(servers.server, servers.httpsServer, name2, port2, true);
}
/**
* Close all documents currently held open.
*/
public async closeDocs(): Promise<void> {
if (this._docManager) {
return this._docManager.shutdownAll();
}
}
public addGoogleAuthEndpoint() {
if (this._check('google-auth')) { return; }
const messagePage = makeMessagePage(getAppPathTo(this.appRoot, 'static'));
addGoogleAuthEndpoint(this.app, messagePage);
}
public addInstallEndpoints() {
if (this._check('install')) { return; }
const isManager = expressWrap(
(req: express.Request, _res: express.Response, next: express.NextFunction) => {
if (!isDefaultUser(req)) { throw new ApiError('Access denied', 403); }
next();
}
);
this.app.get('/api/install/prefs', expressWrap(async (_req, resp) => {
const activation = await this._activations.current();
return sendOkReply(null, resp, {
telemetry: await getTelemetryPrefs(this._dbManager, activation),
});
}));
this.app.patch('/api/install/prefs', isManager, expressWrap(async (req, resp) => {
const props = {prefs: req.body};
const activation = await this._activations.current();
activation.checkProperties(props);
activation.updateFromProperties(props);
await activation.save();
if ((props as Partial<InstallProperties>).prefs?.telemetry) {
// Make sure the Telemetry singleton picks up the changes to telemetry preferences.
// TODO: if there are multiple home server instances, notify them all of changes to
// preferences (via Redis Pub/Sub).
await this._telemetry.fetchTelemetryPrefs();
}
return resp.status(200).send();
}));
}
// Get the HTML template sent for document pages.
public async getDocTemplate(): Promise<DocTemplate> {
const page = await fse.readFile(path.join(getAppPathTo(this.appRoot, 'static'),
'app.html'), 'utf8');
return {
page,
tag: this.tag
};
}
public getTag(): string {
if (!this.tag) {
throw new Error('getTag called too early');
}
return this.tag;
}
/**
* Make sure external storage of all docs is up to date.
*/
public async testFlushDocs() {
const assignments = await this._docWorkerMap.getAssignments(this.worker.id);
for (const assignment of assignments) {
await this._storageManager.flushDoc(assignment);
}
}
public resolveLoginSystem() {
return process.env.GRIST_TEST_LOGIN ? getTestLoginSystem() : (this._getLoginSystem?.() || getLoginSystem());
}
// Adds endpoints that support imports and exports.
private _addSupportPaths(docAccessMiddleware: express.RequestHandler[]) {
if (!this._docWorker) { throw new Error("need DocWorker"); }
const basicMiddleware = [this._userIdMiddleware, this.tagChecker.requireTag];
// Add the handling for the /upload route. Most uploads are meant for a DocWorker: they are put
// in temporary files, and the DocWorker needs to be on the same machine to have access to them.
// This doesn't check for doc access permissions because the request isn't tied to a document.
addUploadRoute(this, this.app, this._trustOriginsMiddleware, ...basicMiddleware);
this.app.get('/attachment', ...docAccessMiddleware,
expressWrap(async (req, res) => this._docWorker.getAttachment(req, res)));
}
private _check(part: string, ...precedents: Array<string|null>) {
if (this.deps.has(part)) { return true; }
for (const precedent of precedents) {
if (!precedent) { continue; }
if (precedent[0] === '!') {
const antecedent = precedent.slice(1);
if (this._has(antecedent)) {
throw new Error(`${part} is needed before ${antecedent}`);
}
} else if (!this._has(precedent)) {
throw new Error(`${precedent} is needed before ${part}`);
}
}
this.deps.add(part);
return false;
}
private _has(part: string) {
return this.deps.has(part);
}
private async _addSelfAsWorker(workers: IDocWorkerMap): Promise<string> {
try {
this._healthy = true;
// Check if this is the first time calling this method. In production,
// it always will be. In testing, we may disconnect and reconnect the
// worker. We only need to determine docWorkerId and this.worker once.
if (!this.worker) {
if (process.env.GRIST_ROUTER_URL) {
// register ourselves with the load balancer first.
const w = await this.createWorkerUrl();
const url = `${w.url}/v/${this.tag}/`;
// TODO: we could compute a distinct internal url here.
this.worker = {
id: w.host,
publicUrl: url,
internalUrl: url,
};
} else {
const url = (process.env.APP_DOC_URL || this.getOwnUrl()) + `/v/${this.tag}/`;
this.worker = {
// The worker id should be unique to this worker.
id: process.env.GRIST_DOC_WORKER_ID || `testDocWorkerId_${this.port}`,
publicUrl: url,
internalUrl: process.env.APP_DOC_INTERNAL_URL || url,
};
}
this.info.push(['docWorkerId', this.worker.id]);
if (process.env.GRIST_WORKER_GROUP) {
this.worker.group = process.env.GRIST_WORKER_GROUP;
}
} else {
if (process.env.GRIST_ROUTER_URL) {
await this.createWorkerUrl();
}
}
await workers.addWorker(this.worker);
await workers.setWorkerAvailability(this.worker.id, true);
} catch (err) {
this._healthy = false;
throw err;
}
return this.worker.id;
}
private async _removeSelfAsWorker(workers: IDocWorkerMap, docWorkerId: string) {
this._healthy = false;
await workers.removeWorker(docWorkerId);
if (process.env.GRIST_ROUTER_URL) {
await axios.get(process.env.GRIST_ROUTER_URL,
{params: {act: 'remove', port: this.getOwnPort()}});
log.info(`DocWorker unregistered itself via ${process.env.GRIST_ROUTER_URL}`);
}
}
// Called when server is shutting down. Save any state that needs saving, and
// disentangle ourselves from outside world.
private async _shutdown(): Promise<void> {
if (!this.worker) { return; }
if (!this._storageManager) { return; }
if (!this._docWorkerMap) { return; } // but this should never happen.
const workers = this._docWorkerMap;
// Pick up the pace on saving documents.
this._storageManager.prepareToCloseStorage();
// We urgently want to disable any new assignments.
await workers.setWorkerAvailability(this.worker.id, false);
// Enumerate the documents we are responsible for.
let assignments = await workers.getAssignments(this.worker.id);
let retries: number = 0;
while (assignments.length > 0 && retries < 3) {
await Promise.all(assignments.map(async assignment => {
log.info("FlexServer shutdown assignment", assignment);
try {
// Start sending the doc to S3 if needed.
const flushOp = this._storageManager.closeDocument(assignment);
// Get access to the clients of this document. This has the side
// effect of waiting for the ActiveDoc to finish initialization.
// This could include loading it from S3, an operation we could
// potentially abort as an optimization.
// TODO: abort any s3 loading as an optimization.
const docPromise = this._docManager.getActiveDoc(assignment);
const doc = docPromise && await docPromise;
await flushOp;
// At this instant, S3 and local document should be the same.
// We'd now like to make sure (synchronously) that:
// - we never output anything new to S3 about this document.
// - we never output anything new to user about this document.
// There could be asynchronous operations going on related to
// these documents, but if we can make sure that their effects
// do not reach the outside world then we can ignore them.
if (doc) {
doc.docClients.interruptAllClients();
doc.setMuted();
}
// Release this document for other workers to pick up.
// There is a small window of time here in which a client
// could reconnect to us. The muted ActiveDoc will result
// in them being dropped again.
await workers.releaseAssignment(this.worker.id, assignment);
} catch (err) {
log.info("problem dealing with assignment", assignment, err);
}
}));
// Check for any assignments that slipped through at the last minute.
assignments = await workers.getAssignments(this.worker.id);
retries++;
}
if (assignments.length > 0) {
log.error("FlexServer shutdown failed to release assignments:", assignments);
}
await this._removeSelfAsWorker(workers, this.worker.id);
try {
await this._docManager.shutdownAll();
} catch (err) {
log.error("FlexServer shutdown problem", err);
}
if (this._comm) {
this._comm.destroyAllClients();
}
log.info("FlexServer shutdown is complete");
}
/**
* Middleware that redirects a request with a userId but without an org to an org-specific URL,
* after looking up the first org for this userId in DB.
*/
private async _redirectToOrg(req: express.Request, resp: express.Response, next: express.NextFunction) {
const mreq = req as RequestWithLogin;
if (mreq.org || !mreq.userId) { return next(); }
// Redirect anonymous users to the merged org.
if (!mreq.userIsAuthorized) {
const redirectUrl = this.getMergedOrgUrl(mreq);
log.debug(`Redirecting anonymous user to: ${redirectUrl}`);
return resp.redirect(redirectUrl);
}
// We have a userId, but the request is for an unknown org. Redirect to an org that's
// available to the user. This matters in dev, and in prod when visiting a generic URL, which
// will here redirect to e.g. the user's personal org.
const result = await this._dbManager.getMergedOrgs(mreq.userId, mreq.userId, null);
const orgs = (result.status === 200) ? result.data : null;
const subdomain = orgs && orgs.length > 0 ? orgs[0].domain : null;
const redirectUrl = subdomain && this._getOrgRedirectUrl(mreq, subdomain);
if (redirectUrl) {
log.debug(`Redirecting userId ${mreq.userId} to: ${redirectUrl}`);
return resp.redirect(redirectUrl);
}
next();
}
/**
* Given a Request and a desired subdomain, returns a URL for a similar request that specifies that
* subdomain either in the hostname or in the path. Optionally passing pathname overrides url's
* path.
*/
private _getOrgRedirectUrl(req: RequestWithLogin, subdomain: string, pathname: string = req.originalUrl): string {
const config = this.getGristConfig();
const {hostname, orgInPath} = getOrgUrlInfo(subdomain, req.get('host')!, config);
const redirectUrl = new URL(pathname, getOriginUrl(req));
if (hostname) {
redirectUrl.hostname = hostname;
}
if (orgInPath) {
redirectUrl.pathname = `/o/${orgInPath}` + redirectUrl.pathname;
}
return redirectUrl.href;
}
// Create and initialize the plugin manager
private async _addPluginManager() {
if (this._pluginManager) { return this._pluginManager; }
// Only used as {userRoot}/plugins as a place for plugins in addition to {appRoot}/plugins
const userRoot = path.resolve(process.env.GRIST_USER_ROOT || getAppPathTo(this.appRoot, '.grist'));
this.info.push(['userRoot', userRoot]);
// Some custom widgets may be included as an npm package called @gristlabs/grist-widget.
// The package doesn't actually contain node code, but should be in the same vicinity
// as other packages that do, so we can use require.resolve on one of them to find it.
// This seems a little overcomplicated, but works well when grist-core is bundled within
// a larger project like grist-electron.
// TODO: maybe add a little node code to @gristlabs/grist-widget so it can be resolved
// directly?
const gristLabsModules = path.dirname(path.dirname(require.resolve('@gristlabs/express-session')));
const bundledRoot = isAffirmative(process.env.GRIST_SKIP_BUNDLED_WIDGETS) ? undefined : path.join(
gristLabsModules, 'grist-widget', 'dist'
);
this.info.push(['bundledRoot', bundledRoot]);
const pluginManager = new PluginManager(this.appRoot, userRoot, bundledRoot);
// `initialize()` is asynchronous and reads plugins manifests; if PluginManager is used before it
// finishes, it will act as if there are no plugins.
// ^ I think this comment was here to justify calling initialize without waiting for
// the result. I'm just going to wait, for determinism.
await pluginManager.initialize();
this._pluginManager = pluginManager;
return pluginManager;
}
// Serve the static app.html proxied for a document.
private _serveDocPage() {
// Serve the static app.html file.
// TODO: We should be the ones to fill in the base href here to ensure that the browser fetches
// the correct version of static files for this app.html.
this.app.get('/:docId/app.html', this._userIdMiddleware, expressWrap(async (req, res) => {
res.json(await this.getDocTemplate());
}));
}
private _getBilling(): IBilling {
if (!this._billing) {
if (!this._dbManager) { throw new Error("need dbManager"); }
this._billing = this.create.Billing(this._dbManager, this);
}
return this._billing;
}
// Check whether logger should skip a line. Careful, req and res are morgan-specific
// types, not Express.
private _shouldSkipRequestLogging(req: {url: string}, res: {statusCode: number}) {
if (req.url === '/status' && [200, 304].includes(res.statusCode) &&
this._healthCheckCounter > HEALTH_CHECK_LOG_SHOW_FIRST_N &&
this._healthCheckCounter % HEALTH_CHECK_LOG_SHOW_EVERY_N !== 1) {
return true;
}
return false;
}
private _createServers() {
// Start the app.
const server = configServer(http.createServer(this.app));
let httpsServer;
if (TEST_HTTPS_OFFSET) {
const certFile = process.env.GRIST_TEST_SSL_CERT;
const privateKeyFile = process.env.GRIST_TEST_SSL_KEY;
if (!certFile) { throw new Error('Set GRIST_TEST_SSL_CERT to location of certificate file'); }
if (!privateKeyFile) { throw new Error('Set GRIST_TEST_SSL_KEY to location of private key file'); }
log.debug(`https support: reading cert from ${certFile}`);
log.debug(`https support: reading private key from ${privateKeyFile}`);
httpsServer = configServer(https.createServer({
key: fse.readFileSync(privateKeyFile, 'utf8'),
cert: fse.readFileSync(certFile, 'utf8'),
}, this.app));
}
return {server, httpsServer};
}
private async _startServers(server: http.Server, httpsServer: https.Server|undefined,
name: string, port: number, verbose: boolean) {
await listenPromise(server.listen(port, this.host));
const serverPort = (server.address() as AddressInfo).port;
if (verbose) { log.info(`${name} available at ${this.host}:${serverPort}`); }
let httpsServerPort: number|undefined;
if (TEST_HTTPS_OFFSET && httpsServer) {
if (port === 0) { throw new Error('cannot use https with OS-assigned port'); }
httpsServerPort = port + TEST_HTTPS_OFFSET;
await listenPromise(httpsServer.listen(httpsServerPort, this.host));
if (verbose) { log.info(`${name} available at https://${this.host}:${httpsServerPort}`); }
}
return {
serverPort,
httpsServerPort,
};
}
private async _recordNewUserInfo(row: object) {
const urlId = DOC_ID_NEW_USER_INFO;
// If nowhere to record data, return immediately.
if (!urlId) { return; }
let body: string|undefined;
let permitKey: string|undefined;
try {
body = JSON.stringify(mapValues(row, value => [value]));
// Take an extra step to translate the special urlId to a docId. This is helpful to
// allow the same urlId to be used in production and in test. We need the docId for the
// specialPermit below, which we need to be able to write to this doc.
//
// TODO With proper forms support, we could give an origin-based permission to submit a
// form to this doc, and do it from the client directly.
const previewerUserId = this._dbManager.getPreviewerUserId();
const docAuth = await this._dbManager.getDocAuthCached({urlId, userId: previewerUserId});
const docId = docAuth.docId;
if (!docId) {
throw new Error(`Can't resolve ${urlId}: ${docAuth.error}`);
}
permitKey = await this._internalPermitStore.setPermit({docId});
const res = await fetch(await this.getHomeUrlByDocId(docId, `/api/docs/${docId}/tables/Responses/data`), {
method: 'POST',
headers: {'Permit': permitKey, 'Content-Type': 'application/json'},
body,
});
if (res.status !== 200) {
throw new Error(`API call failed with ${res.status}`);
}
} finally {
if (permitKey) {
await this._internalPermitStore.removePermit(permitKey);
}
}
}
/**
* If signUp is true, redirect to signUp.
* If signUp is false, redirect to login.
* If signUp is not set, redirect to signUp if no cookie found, else login.
*
* If nextUrl is not supplied, it will be constructed from a path in
* the "next" query parameter.
*/
private async _redirectToLoginOrSignup(
options: {
signUp?: boolean, nextUrl?: URL,
},
req: express.Request, resp: express.Response,
) {
let {nextUrl, signUp} = options;
const mreq = req as RequestWithLogin;
// This will ensure that express-session will set our cookie if it hasn't already -
// we'll need it when we redirect back.
forceSessionChange(mreq.session);
// Redirect to the requested URL after successful login.
if (!nextUrl) {
const nextPath = optStringParam(req.query.next, 'next');
nextUrl = new URL(getOrgUrl(req, nextPath));
}
if (signUp === undefined) {
// Like redirectToLogin in Authorizer, redirect to sign up if it doesn't look like the
// user has ever logged in on this browser.
signUp = (mreq.session.users === undefined);
}
const getRedirectUrl = signUp ? this._getSignUpRedirectUrl : this._getLoginRedirectUrl;
resp.redirect(await getRedirectUrl(req, nextUrl));
}
private async _redirectToHomeOrWelcomePage(
mreq: RequestWithLogin,
resp: express.Response,
options: {redirectToMergedOrg?: boolean} = {}
) {
const {redirectToMergedOrg} = options;
const userId = getUserId(mreq);
const domain = getOrgFromRequest(mreq);
const orgs = this._dbManager.unwrapQueryResult(
await this._dbManager.getOrgs(userId, domain, {
ignoreEveryoneShares: true,
})
);
if (orgs.length > 1) {
resp.redirect(getOrgUrl(mreq, '/welcome/teams'));
} else {
resp.redirect(redirectToMergedOrg ? this.getMergedOrgUrl(mreq) : getOrgUrl(mreq));
}
}
/**
* If a valid cookie was set during sign-up to copy a document to the
* user's Home workspace, copy it and return the id of the new document.
*
* If a valid cookie wasn't set or copying failed, return `null`.
*/
private async _maybeCopyDocToHomeWorkspace(
req: RequestWithLogin,
resp: express.Response
): Promise<string|null> {
const cookies = cookie.parse(req.headers.cookie || '');
if (!cookies) { return null; }
const stateCookie = cookies['gr_signup_state'];
if (!stateCookie) { return null; }
const state = safeJsonParse(stateCookie, {});
const {srcDocId} = state;
if (!srcDocId) { return null; }
let newDocId: string | null = null;
try {
newDocId = await this._copyDocToHomeWorkspace(req, srcDocId);
} catch (e) {
log.error(`FlexServer failed to copy doc ${srcDocId} to Home workspace`, e);
} finally {
resp.clearCookie('gr_signup_state');
}
return newDocId;
}
private async _copyDocToHomeWorkspace(
req: express.Request,
docId: string,
): Promise<string> {
const userId = getUserId(req);
const doc = await this._dbManager.getDoc({userId, urlId: docId});
if (!doc) { throw new Error(`Doc ${docId} not found`); }
const workspacesQueryResult = await this._dbManager.getOrgWorkspaces(getScope(req), 0);
const workspaces = this._dbManager.unwrapQueryResult(workspacesQueryResult);
const workspace = workspaces.find(w => w.name === 'Home');
if (!workspace) { throw new Error('Home workspace not found'); }
const copyDocUrl = this.getHomeUrl(req, '/api/docs');
const response = await fetch(copyDocUrl, {
headers: {
...getTransitiveHeaders(req),
'Content-Type': 'application/json',
},
method: 'POST',
body: JSON.stringify({
sourceDocumentId: doc.id,
workspaceId: workspace.id,
documentName: doc.name,
}),
});
return await response.json();
}
/**
* Creates set of middleware for handling logout requests and clears session. Used in any endpoint
* or a page that needs to log out the user and clear the session.
*/
private _logoutMiddleware() {
const sessionClearMiddleware = expressWrap(async (req, resp, next) => {
const scopedSession = this._sessions.getOrCreateSessionFromRequest(req);
// Clear session so that user needs to log in again at the next request.
// SAML logout in theory uses userSession, so clear it AFTER we compute the URL.
// Express-session will save these changes.
const expressSession = (req as RequestWithLogin).session;
if (expressSession) { expressSession.users = []; expressSession.orgToUser = {}; }
await scopedSession.clearScopedSession(req);
// TODO: limit cache clearing to specific user.
this._sessions.clearCacheIfNeeded();
next();
});
const pluggedMiddleware = this._loginMiddleware.getLogoutMiddleware ?
this._loginMiddleware.getLogoutMiddleware() :
[];
return [...pluggedMiddleware, sessionClearMiddleware];
}
}
/**
* Returns the passed-in server, with some options adjusted. Specifically, removes the default
* socket timeout.
*/
function configServer<T extends https.Server|http.Server>(server: T): T {
// Remove the socket timeout, which causes node to close socket for long-running requests
// (like imports), triggering browser retry. (The default is 2 min; removed starting node v13.)
// See also https://nodejs.org/docs/latest-v10.x/api/http.html#http_server_settimeout_msecs_callback.)
server.setTimeout(0);
// The server's keepAlive timeout should be longer than the load-balancer's. Otherwise LB will
// produce occasional 502 errors when it sends a request to node just as node closes a
// connection. See https://adamcrowder.net/posts/node-express-api-and-aws-alb-502/.
const lbTimeoutSec = 300;
// Ensure all inactive connections are terminated by the ALB, by setting this a few seconds
// higher than the ALB idle timeout
server.keepAliveTimeout = (lbTimeoutSec + 5) * 1000;
// Ensure the headersTimeout is set higher than the keepAliveTimeout due to this nodejs
// regression bug: https://github.com/nodejs/node/issues/27363
server.headersTimeout = (lbTimeoutSec + 6) * 1000;
log.info("Server timeouts: keepAliveTimeout %s headersTimeout %s",
server.keepAliveTimeout, server.headersTimeout);
return server;
}
// Returns true if environment is configured to allow unauthenticated test logins.
function allowTestLogin() {
return Boolean(process.env.GRIST_TEST_LOGIN);
}
// Check OPTIONS requests for allowed origins, and return heads to allow the browser to proceed
// with a POST (or other method) request.
function trustOriginHandler(req: express.Request, res: express.Response, next: express.NextFunction) {
res.header("Access-Control-Allow-Methods", "GET, PATCH, PUT, POST, DELETE, OPTIONS");
if (trustOrigin(req, res)) {
res.header("Access-Control-Allow-Credentials", "true");
res.header("Access-Control-Allow-Headers", "Authorization, Content-Type, X-Requested-With");
} else {
// Any origin is allowed, but if it isn't trusted, then we don't allow credentials,
// i.e. no Cookie or Authorization header.
res.header("Access-Control-Allow-Origin", "*");
res.header("Access-Control-Allow-Headers", "Content-Type, X-Requested-With");
if (req.get("Cookie") || req.get("Authorization")) {
// In practice we don't expect to actually reach this point,
// as the browser should not include credentials in preflight (OPTIONS) requests,
// and should block real requests with credentials based on the preflight response.
// But having this means not having to rely on our understanding of browsers and CORS too much.
throw new ApiError("Credentials not supported for cross-origin requests", 403);
}
}
if ('OPTIONS' === req.method) {
res.sendStatus(200);
} else {
next();
}
}
// Set Cache-Control header to "no-cache"
function noCaching(req: express.Request, res: express.Response, next: express.NextFunction) {
res.header("Cache-Control", "no-cache");
next();
}
// Methods that Electron app relies on.
export interface ElectronServerMethods {
importDoc(filepath: string): Promise<DocCreationInfo>;
onDocOpen(cb: (filePath: string) => void): void;
getUserConfig(): Promise<any>;
updateUserConfig(obj: any): Promise<void>;
onBackupMade(cb: () => void): void;
}
// Allow static files to be requested from any origin.
const serveAnyOrigin: serveStatic.ServeStaticOptions = {
setHeaders: (res, filepath, stat) => {
res.setHeader("Access-Control-Allow-Origin", "*");
}
};