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import { Strategy, type VerifyFunction } from "openid-client/passport";
import passport from "passport";
import { Strategy as GitHubStrategy, type Profile as GitHubProfile } from "passport-github2";
import session from "express-session";
import cookieParser from "cookie-parser";
import type { Express, RequestHandler } from "express";
import memoize from "memoizee";
import connectPg from "connect-pg-simple";
import { authStorage } from "./storage";
import rateLimit from "express-rate-limit";
const sessionTtlMs = 7 * 24 * 60 * 60 * 1000; // 1 week
const sessionTtlSeconds = Math.floor(sessionTtlMs / 1000);
type OidcProvider = "google" | "apple" | "custom";
type OAuthProvider = OidcProvider | "github";
const legacyIssuerUrl = process.env.ISSUER_URL;
const legacyClientId = process.env.CLIENT_ID;
const legacyClientSecret = process.env.CLIENT_SECRET;
function resolveLegacyProvider(): OidcProvider | null {
if (!legacyClientId) {
return null;
}
if (legacyIssuerUrl === "https://accounts.google.com") {
return "google";
}
if (legacyIssuerUrl === "https://appleid.apple.com") {
return "apple";
}
if (legacyIssuerUrl) {
return "custom";
}
return null;
}
function isOidcProvider(provider: OAuthProvider): provider is OidcProvider {
return provider !== "github";
}
type OidcProviderConfig = {
issuerUrl?: string;
clientId?: string;
clientSecret?: string;
label: string;
requiresSecret: boolean;
scopes?: string;
accessTypeOffline?: boolean;
};
function getOidcProviderConfig(provider: OidcProvider): OidcProviderConfig {
const legacyProvider = resolveLegacyProvider();
switch (provider) {
case "google":
return {
issuerUrl: "https://accounts.google.com",
clientId:
process.env.GOOGLE_CLIENT_ID ||
(legacyProvider === "google" ? legacyClientId : undefined),
clientSecret:
process.env.GOOGLE_CLIENT_SECRET ||
(legacyProvider === "google" ? legacyClientSecret : undefined),
label: "Google",
requiresSecret: true,
scopes: "openid email profile",
accessTypeOffline: true,
};
case "apple":
return {
issuerUrl: "https://appleid.apple.com",
clientId:
process.env.APPLE_CLIENT_ID ||
(legacyProvider === "apple" ? legacyClientId : undefined),
clientSecret:
process.env.APPLE_CLIENT_SECRET ||
(legacyProvider === "apple" ? legacyClientSecret : undefined),
label: "Apple",
requiresSecret: true,
scopes: "openid email name",
};
case "custom":
return {
issuerUrl: legacyProvider === "custom" ? legacyIssuerUrl : undefined,
clientId: legacyProvider === "custom" ? legacyClientId : undefined,
clientSecret: legacyProvider === "custom" ? legacyClientSecret : undefined,
label: "Custom",
requiresSecret: true,
scopes: "openid email profile offline_access",
};
}
}
function isOidcProviderConfigured(provider: OidcProvider): boolean {
const config = getOidcProviderConfig(provider);
if (!config.clientId || !config.issuerUrl) {
return false;
}
if (config.requiresSecret && !config.clientSecret) {
return false;
}
return true;
}
export function getConfiguredProviders(): Set<OAuthProvider> {
const providers = new Set<OAuthProvider>();
(['google', 'apple', 'custom'] as OidcProvider[]).forEach((provider) => {
if (isOidcProviderConfigured(provider)) {
providers.add(provider);
}
});
if (process.env.GITHUB_CLIENT_ID && process.env.GITHUB_CLIENT_SECRET) {
providers.add("github");
}
return providers;
}
function resolveProvider(input?: unknown): OAuthProvider | null {
const raw = Array.isArray(input)
? input[0]
: typeof input === "string"
? input
: null;
const normalized = raw?.toLowerCase();
if (normalized === "google" || normalized === "apple" || normalized === "custom" || normalized === "github") {
return normalized;
}
const configured = getConfiguredProviders();
const preferred = process.env.DEFAULT_AUTH_PROVIDER?.toLowerCase();
if (preferred && configured.has(preferred as OAuthProvider)) {
return preferred as OAuthProvider;
}
if (configured.has("google")) return "google";
if (configured.has("apple")) return "apple";
if (configured.has("github")) return "github";
if (configured.has("custom")) return "custom";
return null;
}
const getOidcConfig = memoize(
async (provider: OidcProvider) => {
const providerConfig = getOidcProviderConfig(provider);
if (!providerConfig.clientId) {
return null;
}
if (!providerConfig.issuerUrl) {
console.error(`â ISSUER_URL not set for ${providerConfig.label} OAuth.`);
return null;
}
if (providerConfig.requiresSecret && !providerConfig.clientSecret) {
console.error(`â CLIENT_SECRET not set for ${providerConfig.label} OAuth.`);
return null;
}
try {
console.log(`đ Using ${providerConfig.label} OAuth`);
return await client.discovery(
new URL(providerConfig.issuerUrl),
providerConfig.clientId,
providerConfig.clientSecret
);
} catch (error) {
console.error(`â Failed to discover OIDC configuration from ${providerConfig.issuerUrl}:`, error);
return null;
}
},
{
maxAge: 3600 * 1000,
normalizer: (args) => args[0],
}
);
export function getSession(): RequestHandler {
const pgStore = connectPg(session);
const sessionStore = new pgStore({
conString: process.env.DATABASE_URL,
createTableIfMissing: true,
ttl: sessionTtlMs,
tableName: "sessions",
});
// Determine if we should use secure cookies
// Only use secure cookies in production AND when not on localhost
const isProduction = process.env.NODE_ENV === "production";
const isLocalhost = process.env.HOST === "localhost" || process.env.HOST === "127.0.0.1";
const useSecureCookies = isProduction && !isLocalhost;
const sessionMiddleware = session({
secret: process.env.SESSION_SECRET!,
store: sessionStore,
resave: false,
saveUninitialized: false,
cookie: {
httpOnly: true,
secure: useSecureCookies,
sameSite: "lax",
maxAge: sessionTtlMs,
},
});
return sessionMiddleware;
}
type UserClaims = {
sub?: string;
email?: string;
name?: string;
given_name?: string;
family_name?: string;
first_name?: string;
last_name?: string;
picture?: string;
profile_image_url?: string;
exp?: number;
[key: string]: unknown;
};
function updateUserSession(
user: any,
claims: UserClaims,
accessToken?: string,
refreshToken?: string,
provider?: OAuthProvider
) {
user.claims = claims;
user.access_token = accessToken;
user.refresh_token = refreshToken;
user.expires_at = claims?.exp ?? Math.floor(Date.now() / 1000) + sessionTtlSeconds;
user.auth_provider = provider;
}
function splitName(name?: string): { firstName?: string; lastName?: string } {
if (!name) {
return {};
}
const parts = name.trim().split(/\s+/);
if (parts.length === 1) {
return { firstName: parts[0] };
}
return {
firstName: parts[0],
lastName: parts.slice(1).join(" "),
};
}
function extractUserFromClaims(claims: UserClaims) {
const nameParts = splitName(claims.name);
return {
id: claims.sub!,
email: claims.email,
firstName: claims.first_name || claims.given_name || nameParts.firstName,
lastName: claims.last_name || claims.family_name || nameParts.lastName,
profileImageUrl: claims.profile_image_url || claims.picture,
};
}
async function upsertUser(claims: UserClaims) {
if (!claims.sub) {
return;
}
await authStorage.upsertUser(extractUserFromClaims(claims));
}
function buildGithubClaims(profile: GitHubProfile): UserClaims {
const primaryEmail = profile.emails?.[0]?.value;
const displayName = profile.displayName || profile.username || "";
const nameParts = splitName(displayName);
return {
sub: `github:${profile.id}`,
email: primaryEmail,
name: displayName,
given_name: nameParts.firstName,
family_name: nameParts.lastName,
picture: profile.photos?.[0]?.value,
};
}
export async function setupAuth(app: Express) {
// trust proxy is configured in index.ts â no need to set it again here
app.use(cookieParser());
app.use(getSession());
// Note: CSRF protection via csrf-csrf was removed because it requires
// client-side integration to fetch and send CSRF tokens. The session
// cookies use SameSite=lax which provides protection against most CSRF
// attacks. Full CSRF protection can be added later if needed.
app.use(passport.initialize());
app.use(passport.session());
const configuredProviders = getConfiguredProviders();
// Skip OAuth setup if credentials are not configured
if (configuredProviders.size === 0) {
console.log("âšī¸ Running in development mode without OAuth authentication");
return;
}
console.log("â
OAuth authentication enabled");
const createVerifyOidc = (provider: OidcProvider): VerifyFunction =>
async (
tokens: client.TokenEndpointResponse & client.TokenEndpointResponseHelpers,
verified: passport.AuthenticateCallback
) => {
const user = {};
const claims = tokens.claims() as UserClaims;
updateUserSession(user, claims, tokens.access_token, tokens.refresh_token, provider);
await upsertUser(claims);
verified(null, user);
};
const verifyGithub = async (
accessToken: string,
_refreshToken: string,
profile: GitHubProfile,
done: passport.AuthenticateCallback
) => {
const user = {};
const claims = buildGithubClaims(profile);
updateUserSession(user, claims, accessToken, undefined, "github");
await upsertUser(claims);
done(null, user);
};
// Keep track of registered strategies
const registeredStrategies = new Set<string>();
const getCallbackURL = (req: any, provider: OAuthProvider) => {
// Use HOST env var for Docker/reverse-proxy deployments where req.hostname
// returns the container-internal hostname instead of the public domain.
// For local Docker (HOST=localhost, port mapped e.g. 5002:5000), we need
// req.get("host") which includes the correct external port.
const envHost = process.env.HOST;
const reqHost = req.get("host") || req.hostname;
let host: string;
if (envHost && envHost !== "localhost" && envHost !== "127.0.0.1") {
// Production: use the configured domain (no port needed, reverse proxy handles it)
host = envHost;
} else {
// Local dev or local Docker: use req host which includes the correct port
host = reqHost;
}
const isLocalhost = host === "localhost" || host.startsWith("localhost:") || host.startsWith("127.0.0.1");
const protocol = isLocalhost ? "http" : "https";
const baseUrl = `${protocol}://${host}`;
if (provider === "github") {
return `${baseUrl}/api/callback/github`;
}
return `${baseUrl}/api/callback?provider=${provider}`;
};
const ensureOidcStrategy = async (req: any, provider: OidcProvider) => {
const config = await getOidcConfig(provider);
if (!config) {
return null;
}
const callbackURL = getCallbackURL(req, provider);
const strategyName = `oidc:${provider}:${callbackURL}`;
const providerConfig = getOidcProviderConfig(provider);
if (!registeredStrategies.has(strategyName)) {
console.log(`đ Registering OIDC strategy for ${provider}`);
console.log(` Callback URL: ${callbackURL}`);
console.log(` Client ID: ${providerConfig.clientId?.substring(0, 20)}...`);
const strategy = new Strategy(
{
name: strategyName,
config,
callbackURL,
},
createVerifyOidc(provider)
);
passport.use(strategy);
registeredStrategies.add(strategyName);
console.log(`â Strategy registered: ${strategyName}`);
}
return strategyName;
};
const ensureGithubStrategy = (req: any) => {
const callbackURL = getCallbackURL(req, "github");
const strategyName = `github:${callbackURL}`;
if (!registeredStrategies.has(strategyName)) {
const strategy = new GitHubStrategy(
{
clientID: process.env.GITHUB_CLIENT_ID!,
clientSecret: process.env.GITHUB_CLIENT_SECRET!,
callbackURL,
},
verifyGithub
);
passport.use(strategyName, strategy);
registeredStrategies.add(strategyName);
console.log(`â Strategy registered: ${strategyName}`);
}
return strategyName;
};
passport.serializeUser((user: Express.User, cb) => cb(null, user));
passport.deserializeUser((user: Express.User, cb) => cb(null, user));
// Rate limiter for authentication routes to prevent brute force attacks
// Only enabled in production to allow easier testing in development
const authLimiter = process.env.NODE_ENV === "production"
? rateLimit({
windowMs: 15 * 60 * 1000, // 15 minutes
max: 100, // 100 attempts per 15 minutes
standardHeaders: true,
legacyHeaders: false,
message: "Too many authentication attempts, please try again later.",
})
: ((_req: any, _res: any, next: any) => next()); // No-op in development
app.get("/api/login", authLimiter, async (req, res, next) => {
const provider = resolveProvider(req.query.provider);
if (!provider) {
return res.status(400).json({ message: "No OAuth providers configured." });
}
if (provider === "github") {
const strategyName = ensureGithubStrategy(req);
return passport.authenticate(strategyName, {
scope: ["read:user", "user:email"],
})(req, res, next);
}
const strategyName = await ensureOidcStrategy(req, provider);
if (!strategyName) {
return res.status(400).json({ message: `${provider} OAuth is not configured.` });
}
const providerConfig = getOidcProviderConfig(provider);
const authOptions: any = {
prompt: "login consent",
scope: (providerConfig.scopes || "openid email profile").split(" "),
};
if (providerConfig.accessTypeOffline) {
authOptions.access_type = "offline";
}
return passport.authenticate(strategyName, authOptions)(req, res, next);
});
app.get("/api/callback/github", authLimiter, (req, res, next) => {
const strategyName = ensureGithubStrategy(req);
return passport.authenticate(strategyName, {
successReturnToOrRedirect: "/",
failureRedirect: "/api/login?provider=github",
})(req, res, next);
});
app.get("/api/callback", authLimiter, async (req, res, next) => {
const provider = resolveProvider(req.query.provider);
if (!provider) {
return res.redirect("/api/login");
}
if (provider === "github") {
return res.redirect("/api/callback/github");
}
const strategyName = await ensureOidcStrategy(req, provider);
if (!strategyName) {
return res.redirect("/api/login");
}
return passport.authenticate(strategyName, {
successReturnToOrRedirect: "/",
failureRedirect: `/api/login?provider=${provider}`,
})(req, res, next);
});
app.get("/api/logout", authLimiter, async (req, res) => {
const provider = resolveProvider(req.query.provider);
req.logout(async () => {
if (!provider || provider === "github") {
return res.redirect("/");
}
const config = await getOidcConfig(provider);
if (!config) {
return res.redirect("/");
}
const providerConfig = getOidcProviderConfig(provider);
const clientId = providerConfig.clientId;
if (!clientId) {
return res.redirect("/");
}
try {
const envHost = process.env.HOST;
const reqHost = req.get("host") || req.hostname;
const host = envHost && envHost !== "localhost" && envHost !== "127.0.0.1" ? envHost : reqHost;
const isLocal = host === "localhost" || host.startsWith("localhost:") || host.startsWith("127.0.0.1");
const proto = isLocal ? "http" : "https";
return res.redirect(
client.buildEndSessionUrl(config, {
client_id: clientId,
post_logout_redirect_uri: `${proto}://${host}`,
}).href
);
} catch (error) {
return res.redirect("/");
}
});
});
}
export const isAuthenticated: RequestHandler = async (req, res, next) => {
// If OAuth is not configured, provide a mock user for development mode
if (getConfiguredProviders().size === 0) {
// Create a mock user object for development
req.user = {
claims: {
sub: process.env.DEV_USER_ID || "dev-user",
email: process.env.DEV_USER_EMAIL || "dev@localhost",
name: "Development User",
given_name: "Development",
family_name: "User",
},
access_token: "dev-token",
expires_at: Math.floor(Date.now() / 1000) + sessionTtlSeconds,
auth_provider: "development",
} as any;
return next();
}
const user = req.user as any;
if (!req.isAuthenticated() || !user.expires_at) {
return res.status(401).json({ message: "Unauthorized" });
}
const now = Math.floor(Date.now() / 1000);
if (now <= user.expires_at) {
return next();
}
const provider = user.auth_provider as OAuthProvider | undefined;
if (!provider || !isOidcProvider(provider)) {
res.status(401).json({ message: "Unauthorized" });
return;
}
const refreshToken = user.refresh_token;
if (!refreshToken) {
res.status(401).json({ message: "Unauthorized" });
return;
}
try {
const config = await getOidcConfig(provider);
if (!config) {
return next();
}
const tokenResponse = await client.refreshTokenGrant(config, refreshToken);
updateUserSession(user, tokenResponse.claims() as UserClaims, tokenResponse.access_token, tokenResponse.refresh_token, provider);
return next();
} catch (error) {
res.status(401).json({ message: "Unauthorized" });
return;
}
};
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