364 lines
14 KiB
JavaScript
364 lines
14 KiB
JavaScript
import { Router } from 'express';
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import { v4 as uuidv4 } from 'uuid';
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import { rateLimit } from 'express-rate-limit';
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import { getDb } from '../config/database.js';
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import { authenticateToken } from '../middleware/auth.js';
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import { sendFederationInviteEmail } from '../config/mailer.js';
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// M13: rate limit the unauthenticated federation receive endpoint
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const federationReceiveLimiter = rateLimit({
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windowMs: 15 * 60 * 1000, // 15 minutes
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max: 100,
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standardHeaders: true,
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legacyHeaders: false,
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message: { error: 'Too many federation requests. Please try again later.' },
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});
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import {
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getFederationDomain,
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isFederationEnabled,
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getPublicKey,
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signPayload,
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verifyPayload,
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discoverInstance,
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parseAddress,
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} from '../config/federation.js';
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const router = Router();
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// ── Well-known discovery endpoint ───────────────────────────────────────────
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// Mounted at /.well-known/redlight in index.js
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export function wellKnownHandler(req, res) {
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const domain = getFederationDomain();
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if (!domain) {
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return res.status(404).json({ error: 'Federation not configured' });
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}
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res.json({
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domain,
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federation_api: '/api/federation',
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public_key: getPublicKey(),
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software: 'Redlight',
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version: '1.2.0',
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});
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}
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// ── POST /api/federation/invite — Send invitation to remote user ────────────
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router.post('/invite', authenticateToken, async (req, res) => {
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try {
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if (!isFederationEnabled()) {
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return res.status(400).json({ error: 'Federation is not configured on this instance' });
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}
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const { room_uid, to, message } = req.body;
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if (!room_uid || !to) {
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return res.status(400).json({ error: 'room_uid and to are required' });
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}
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const { username, domain } = parseAddress(to);
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if (!domain) {
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return res.status(400).json({ error: 'Remote address must be in format username@domain' });
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}
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// Don't allow inviting to own instance
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if (domain === getFederationDomain()) {
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return res.status(400).json({ error: 'Cannot send federation invite to your own instance. Use local sharing instead.' });
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}
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const db = getDb();
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// Verify room exists and user has access
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const room = await db.get('SELECT * FROM rooms WHERE uid = ?', [room_uid]);
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if (!room) {
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return res.status(404).json({ error: 'Room not found' });
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}
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const isOwner = room.user_id === req.user.id;
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if (!isOwner) {
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const share = await db.get('SELECT id FROM room_shares WHERE room_id = ? AND user_id = ?', [room.id, req.user.id]);
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if (!share) {
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return res.status(403).json({ error: 'No permission to invite from this room' });
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}
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}
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// Build guest join URL for the remote user
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const baseUrl = process.env.APP_URL || `${req.protocol}://${req.get('host')}`;
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const joinUrl = `${baseUrl}/join/${room.uid}`;
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// Build invitation payload
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const inviteId = uuidv4();
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const payload = {
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invite_id: inviteId,
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from_user: `@${req.user.name}@${getFederationDomain()}`,
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to_user: to,
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room_name: room.name,
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room_uid: room.uid,
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max_participants: room.max_participants ?? 0,
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allow_recording: room.record_meeting ?? 1,
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message: message || null,
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join_url: joinUrl,
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timestamp: new Date().toISOString(),
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};
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// Sign and send to remote instance
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const signature = signPayload(payload);
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const { baseUrl: remoteApi } = await discoverInstance(domain);
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const response = await fetch(`${remoteApi}/receive`, {
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method: 'POST',
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headers: {
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'Content-Type': 'application/json',
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'X-Federation-Signature': signature,
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'X-Federation-Origin': getFederationDomain(),
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},
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body: JSON.stringify(payload),
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signal: AbortSignal.timeout(15_000), // 15 second timeout
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});
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if (!response.ok) {
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const data = await response.json().catch(() => ({}));
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throw new Error(data.error || `Remote server responded with ${response.status}`);
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}
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res.json({ success: true, invite_id: inviteId });
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} catch (err) {
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console.error('Federation invite error:', err);
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res.status(500).json({ error: err.message || 'Failed to send federation invite' });
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}
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});
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// ── POST /api/federation/receive — Accept incoming invitation from remote ───
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router.post('/receive', federationReceiveLimiter, async (req, res) => {
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try {
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if (!isFederationEnabled()) {
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return res.status(400).json({ error: 'Federation is not configured on this instance' });
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}
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const signature = req.headers['x-federation-signature'];
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const payload = req.body || {};
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if (!signature) {
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return res.status(401).json({ error: 'Missing federation signature' });
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}
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// Extract expected fields from the incoming payload
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const { invite_id, from_user, to_user, room_name, room_uid, max_participants, allow_recording, message, join_url } = payload;
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if (!invite_id || !from_user || !to_user || !room_name || !join_url) {
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return res.status(400).json({ error: 'Incomplete invitation payload' });
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}
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// S4: validate field lengths from remote to prevent oversized DB entries
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if (invite_id.length > 100 || from_user.length > 200 || to_user.length > 200 ||
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room_name.length > 200 || join_url.length > 2000 || (message && message.length > 5000)) {
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return res.status(400).json({ error: 'Payload fields exceed maximum allowed length' });
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}
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// Fetch the sender's public key dynamically
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const { domain: senderDomain } = parseAddress(from_user);
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if (!senderDomain) {
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return res.status(400).json({ error: 'Sender address must include a domain' });
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}
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const { publicKey } = await discoverInstance(senderDomain);
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if (!publicKey) {
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return res.status(400).json({ error: 'Sender instance did not provide a public key' });
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}
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if (!verifyPayload(payload, signature, publicKey)) {
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return res.status(403).json({ error: 'Invalid federation signature' });
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}
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// Parse the target address and find local user
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const { username } = parseAddress(to_user);
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const db = getDb();
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// Look up user by name (case-insensitive)
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const targetUser = await db.get(
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'SELECT id, name, email FROM users WHERE LOWER(name) = LOWER(?)',
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[username]
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);
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if (!targetUser) {
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return res.status(404).json({ error: 'User not found on this instance' });
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}
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// Check for duplicate
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const existing = await db.get(
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'SELECT id FROM federation_invitations WHERE invite_id = ?',
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[invite_id]
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);
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if (existing) {
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return res.json({ success: true, message: 'Invitation already received' });
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}
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// Store the invitation
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await db.run(
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`INSERT INTO federation_invitations (invite_id, from_user, to_user_id, room_name, message, join_url)
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VALUES (?, ?, ?, ?, ?, ?)`,
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[invite_id, from_user, targetUser.id, room_name, message || null, join_url]
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);
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// Store room_uid, max_participants, allow_recording if those columns already exist
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// (we update after initial insert to stay compatible with old schema)
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const inv = await db.get('SELECT id FROM federation_invitations WHERE invite_id = ? AND to_user_id = ?', [invite_id, targetUser.id]);
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if (inv && room_uid !== undefined) {
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try {
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await db.run(
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'UPDATE federation_invitations SET room_uid = ?, max_participants = ?, allow_recording = ? WHERE id = ?',
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[room_uid || null, max_participants ?? 0, allow_recording ?? 1, inv.id]
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);
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} catch { /* column may not exist on very old installs */ }
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}
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// Send notification email (truly fire-and-forget – never blocks the response)
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if (targetUser.email) {
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const appUrl = process.env.APP_URL || `${req.protocol}://${req.get('host')}`;
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const inboxUrl = `${appUrl}/federation/inbox`;
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const appName = process.env.APP_NAME || 'Redlight';
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sendFederationInviteEmail(
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targetUser.email, targetUser.name, from_user,
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room_name, message || null, inboxUrl, appName
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).catch(mailErr => {
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console.warn('Federation invite mail failed (non-fatal):', mailErr.message);
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});
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}
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res.json({ success: true });
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} catch (err) {
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console.error('Federation receive error:', err);
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res.status(500).json({ error: 'Failed to process federation invitation' });
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}
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});
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// ── GET /api/federation/invitations — List invitations for current user ─────
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router.get('/invitations', authenticateToken, async (req, res) => {
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try {
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const db = getDb();
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const invitations = await db.all(
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`SELECT * FROM federation_invitations
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WHERE to_user_id = ?
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ORDER BY created_at DESC`,
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[req.user.id]
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);
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res.json({ invitations });
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} catch (err) {
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console.error('List federation invitations error:', err);
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res.status(500).json({ error: 'Failed to load invitations' });
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}
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});
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// ── GET /api/federation/invitations/pending-count — Badge count ─────────────
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router.get('/invitations/pending-count', authenticateToken, async (req, res) => {
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try {
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const db = getDb();
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const result = await db.get(
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`SELECT COUNT(*) as count FROM federation_invitations
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WHERE to_user_id = ? AND status = 'pending'`,
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[req.user.id]
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);
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res.json({ count: result?.count || 0 });
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} catch (err) {
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res.json({ count: 0 });
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}
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});
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// ── POST /api/federation/invitations/:id/accept — Accept an invitation ──────
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router.post('/invitations/:id/accept', authenticateToken, async (req, res) => {
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try {
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const db = getDb();
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const invitation = await db.get(
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'SELECT * FROM federation_invitations WHERE id = ? AND to_user_id = ?',
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[req.params.id, req.user.id]
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);
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if (!invitation) {
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return res.status(404).json({ error: 'Invitation not found' });
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}
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await db.run(
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"UPDATE federation_invitations SET status = 'accepted' WHERE id = ?",
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[invitation.id]
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);
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// Upsert into federated_rooms so the room appears in the user's dashboard
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const existing = await db.get(
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'SELECT id FROM federated_rooms WHERE invite_id = ? AND user_id = ?',
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[invitation.invite_id, req.user.id]
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);
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if (!existing) {
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await db.run(
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`INSERT INTO federated_rooms (user_id, invite_id, room_name, from_user, join_url, meet_id, max_participants, allow_recording)
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VALUES (?, ?, ?, ?, ?, ?, ?, ?)`,
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[
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req.user.id, invitation.invite_id, invitation.room_name,
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invitation.from_user, invitation.join_url,
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invitation.room_uid || null,
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invitation.max_participants ?? 0,
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invitation.allow_recording ?? 1,
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]
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);
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}
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res.json({ success: true, join_url: invitation.join_url });
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} catch (err) {
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console.error('Accept invitation error:', err);
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res.status(500).json({ error: 'Failed to accept invitation' });
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}
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});
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// ── DELETE /api/federation/invitations/:id — Decline/dismiss invitation ─────
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router.delete('/invitations/:id', authenticateToken, async (req, res) => {
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try {
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const db = getDb();
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const invitation = await db.get(
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'SELECT * FROM federation_invitations WHERE id = ? AND to_user_id = ?',
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[req.params.id, req.user.id]
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);
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if (!invitation) {
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return res.status(404).json({ error: 'Invitation not found' });
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}
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await db.run('DELETE FROM federation_invitations WHERE id = ?', [invitation.id]);
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res.json({ success: true });
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} catch (err) {
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console.error('Decline invitation error:', err);
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res.status(500).json({ error: 'Failed to decline invitation' });
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}
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});
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// ── GET /api/federation/federated-rooms — List saved federated rooms ────────
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router.get('/federated-rooms', authenticateToken, async (req, res) => {
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try {
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const db = getDb();
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const rooms = await db.all(
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`SELECT * FROM federated_rooms WHERE user_id = ? ORDER BY created_at DESC`,
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[req.user.id]
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);
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res.json({ rooms });
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} catch (err) {
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console.error('List federated rooms error:', err);
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res.status(500).json({ error: 'Failed to load federated rooms' });
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}
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});
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// ── DELETE /api/federation/federated-rooms/:id — Remove a federated room ────
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router.delete('/federated-rooms/:id', authenticateToken, async (req, res) => {
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try {
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const db = getDb();
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const room = await db.get(
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'SELECT * FROM federated_rooms WHERE id = ? AND user_id = ?',
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[req.params.id, req.user.id]
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);
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if (!room) return res.status(404).json({ error: 'Room not found' });
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await db.run('DELETE FROM federated_rooms WHERE id = ?', [room.id]);
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res.json({ success: true });
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} catch (err) {
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console.error('Delete federated room error:', err);
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res.status(500).json({ error: 'Failed to remove room' });
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}
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});
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export default router;
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