mirror of
https://github.com/xtr-dev/rondevu-server.git
synced 2025-12-14 04:43:24 +00:00
refactor: Convert to RPC interface with single /rpc endpoint
BREAKING CHANGES: - Replaced REST API with RPC interface - Single POST /rpc endpoint for all operations - Removed auth middleware (per-method auth instead) - Support for batch operations - Message format changed for all methods Changes: - Created src/rpc.ts with all method handlers - Simplified src/app.ts to only handle /rpc endpoint - Removed src/middleware/auth.ts - Updated README.md with complete RPC documentation
This commit is contained in:
630
src/app.ts
630
src/app.ts
@@ -2,20 +2,14 @@ import { Hono } from 'hono';
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import { cors } from 'hono/cors';
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import { Storage } from './storage/types.ts';
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import { Config } from './config.ts';
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import { createAuthMiddleware, getAuthenticatedUsername } from './middleware/auth.ts';
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import { validateUsernameClaim, validateServicePublish, validateServiceFqn, parseServiceFqn, isVersionCompatible } from './crypto.ts';
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import type { Context } from 'hono';
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import { handleRpc, RpcRequest } from './rpc.ts';
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/**
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* Creates the Hono application with username and service-based WebRTC signaling
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* RESTful API design - v0.11.0
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* Creates the Hono application with RPC interface
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*/
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export function createApp(storage: Storage, config: Config) {
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const app = new Hono();
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// Create auth middleware
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const authMiddleware = createAuthMiddleware(storage);
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// Enable CORS
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app.use('/*', cors({
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origin: (origin) => {
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@@ -27,622 +21,70 @@ export function createApp(storage: Storage, config: Config) {
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}
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return config.corsOrigins[0];
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},
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allowMethods: ['GET', 'POST', 'PUT', 'DELETE', 'OPTIONS'],
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allowHeaders: ['Content-Type', 'Origin', 'Authorization'],
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allowMethods: ['GET', 'POST', 'OPTIONS'],
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allowHeaders: ['Content-Type', 'Origin'],
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exposeHeaders: ['Content-Type'],
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maxAge: 600,
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credentials: true,
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credentials: false,
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maxAge: 86400,
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}));
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// ===== General Endpoints =====
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/**
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* GET /
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* Returns server information
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*/
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// Root endpoint - server info
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app.get('/', (c) => {
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return c.json({
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version: config.version,
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name: 'Rondevu',
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description: 'DNS-like WebRTC signaling with username claiming and service discovery'
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});
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description: 'WebRTC signaling with RPC interface and Ed25519 authentication',
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}, 200);
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});
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/**
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* GET /health
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* Health check endpoint
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*/
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// Health check
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app.get('/health', (c) => {
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return c.json({
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status: 'ok',
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timestamp: Date.now(),
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version: config.version
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});
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});
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// ===== User Management (RESTful) =====
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/**
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* GET /users/:username
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* Check if username is available or get claim info
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*/
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app.get('/users/:username', async (c) => {
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try {
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const username = c.req.param('username');
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const claimed = await storage.getUsername(username);
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if (!claimed) {
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return c.json({
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username,
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available: true
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}, 200);
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}
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return c.json({
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username: claimed.username,
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available: false,
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claimedAt: claimed.claimedAt,
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expiresAt: claimed.expiresAt,
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publicKey: claimed.publicKey
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}, 200);
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} catch (err) {
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console.error('Error checking username:', err);
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return c.json({ error: 'Internal server error' }, 500);
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}
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version: config.version,
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}, 200);
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});
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/**
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* POST /users/:username
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* Claim a username with cryptographic proof
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* POST /rpc
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* RPC endpoint - accepts single or batch method calls
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*/
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app.post('/users/:username', async (c) => {
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try {
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const username = c.req.param('username');
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const body = await c.req.json();
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const { publicKey, signature, message } = body;
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if (!publicKey || !signature || !message) {
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return c.json({ error: 'Missing required parameters: publicKey, signature, message' }, 400);
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}
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// Validate claim
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const validation = await validateUsernameClaim(username, publicKey, signature, message);
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if (!validation.valid) {
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return c.json({ error: validation.error }, 400);
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}
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// Attempt to claim username
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try {
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const claimed = await storage.claimUsername({
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username,
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publicKey,
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signature,
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message
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});
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return c.json({
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username: claimed.username,
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claimedAt: claimed.claimedAt,
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expiresAt: claimed.expiresAt
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}, 201);
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} catch (err: any) {
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if (err.message?.includes('already claimed')) {
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return c.json({ error: 'Username already claimed by different public key' }, 409);
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}
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throw err;
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}
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} catch (err) {
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console.error('Error claiming username:', err);
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return c.json({ error: 'Internal server error' }, 500);
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}
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});
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// ===== Service Discovery and Management =====
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/**
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* GET /services/:fqn
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* Get service by FQN with optional discovery
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* Supports three modes:
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* 1. Direct lookup: /services/chat:1.0.0@alice - Returns specific user's offer
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* 2. Random discovery: /services/chat:1.0.0 - Returns random available offer
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* 3. Paginated discovery: /services/chat:1.0.0?limit=10&offset=0 - Returns array of available offers
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*/
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app.get('/services/:fqn', async (c) => {
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try {
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const serviceFqn = decodeURIComponent(c.req.param('fqn'));
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const limit = c.req.query('limit');
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const offset = c.req.query('offset');
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// Parse the requested FQN
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const parsed = parseServiceFqn(serviceFqn);
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if (!parsed) {
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return c.json({ error: 'Invalid service FQN format. Use service:version or service:version@username' }, 400);
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}
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const { serviceName, version, username } = parsed;
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// Mode 1: Direct lookup with username
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if (username) {
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// Find service by exact FQN
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const service = await storage.getServiceByFqn(serviceFqn);
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if (!service) {
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return c.json({ error: 'Service not found' }, 404);
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}
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// Get available offer from this service
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const serviceOffers = await storage.getOffersForService(service.id);
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const availableOffer = serviceOffers.find(offer => !offer.answererUsername);
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if (!availableOffer) {
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return c.json({
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error: 'No available offers',
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message: 'All offers from this service are currently in use.'
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}, 503);
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}
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return c.json({
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serviceId: service.id,
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username: service.username,
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serviceFqn: service.serviceFqn,
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offerId: availableOffer.id,
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sdp: availableOffer.sdp,
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createdAt: service.createdAt,
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expiresAt: service.expiresAt
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}, 200);
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}
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// Mode 2 & 3: Discovery without username
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if (limit || offset) {
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// Paginated discovery
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const limitNum = limit ? Math.min(parseInt(limit, 10), 100) : 10;
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const offsetNum = offset ? parseInt(offset, 10) : 0;
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const services = await storage.discoverServices(serviceName, version, limitNum, offsetNum);
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if (services.length === 0) {
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return c.json({
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error: 'No services found',
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message: `No available services found for ${serviceName}:${version}`
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}, 404);
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}
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// Get available offers for each service
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const servicesWithOffers = await Promise.all(
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services.map(async (service) => {
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const offers = await storage.getOffersForService(service.id);
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const availableOffer = offers.find(offer => !offer.answererUsername);
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return availableOffer ? {
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serviceId: service.id,
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username: service.username,
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serviceFqn: service.serviceFqn,
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offerId: availableOffer.id,
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sdp: availableOffer.sdp,
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createdAt: service.createdAt,
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expiresAt: service.expiresAt
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} : null;
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})
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);
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const availableServices = servicesWithOffers.filter(s => s !== null);
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return c.json({
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services: availableServices,
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count: availableServices.length,
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limit: limitNum,
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offset: offsetNum
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}, 200);
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} else {
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// Random discovery
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const service = await storage.getRandomService(serviceName, version);
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if (!service) {
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return c.json({
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error: 'No services found',
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message: `No available services found for ${serviceName}:${version}`
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}, 404);
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}
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// Get available offer
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const offers = await storage.getOffersForService(service.id);
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const availableOffer = offers.find(offer => !offer.answererUsername);
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if (!availableOffer) {
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return c.json({
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error: 'No available offers',
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message: 'Service found but no available offers.'
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}, 503);
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}
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return c.json({
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serviceId: service.id,
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username: service.username,
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serviceFqn: service.serviceFqn,
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offerId: availableOffer.id,
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sdp: availableOffer.sdp,
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createdAt: service.createdAt,
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expiresAt: service.expiresAt
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}, 200);
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}
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} catch (err) {
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console.error('Error getting service:', err);
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return c.json({ error: 'Internal server error' }, 500);
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}
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});
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/**
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* POST /services
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* Publish a service with one or more offers
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* Service FQN must include username: service:version@username
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*/
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app.post('/services', authMiddleware, async (c) => {
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let serviceFqn: string | undefined;
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let createdOffers: any[] = [];
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app.post('/rpc', async (c) => {
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try {
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const body = await c.req.json();
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serviceFqn = body.serviceFqn;
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const { offers, ttl, signature, message } = body;
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if (!serviceFqn || !offers || !Array.isArray(offers) || offers.length === 0) {
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return c.json({ error: 'Missing required parameters: serviceFqn, offers (must be non-empty array)' }, 400);
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// Support both single request and batch array
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const requests: RpcRequest[] = Array.isArray(body) ? body : [body];
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// Validate requests
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if (requests.length === 0) {
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return c.json({ error: 'Empty request array' }, 400);
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}
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// Validate and parse service FQN
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const fqnValidation = validateServiceFqn(serviceFqn);
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if (!fqnValidation.valid) {
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return c.json({ error: fqnValidation.error }, 400);
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if (requests.length > 100) {
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return c.json({ error: 'Too many requests in batch (max 100)' }, 400);
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}
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const parsed = parseServiceFqn(serviceFqn);
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if (!parsed || !parsed.username) {
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return c.json({ error: 'Service FQN must include username (format: service:version@username)' }, 400);
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}
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// Handle RPC
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const responses = await handleRpc(requests, storage, config);
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const username = parsed.username;
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// Verify username ownership (signature required)
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if (!signature || !message) {
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return c.json({ error: 'Missing signature or message for username verification' }, 400);
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}
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const usernameRecord = await storage.getUsername(username);
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if (!usernameRecord) {
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return c.json({ error: 'Username not claimed' }, 404);
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}
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// Verify signature matches username's public key
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const signatureValidation = await validateServicePublish(username, serviceFqn, usernameRecord.publicKey, signature, message);
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if (!signatureValidation.valid) {
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return c.json({ error: 'Invalid signature for username' }, 403);
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}
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// Note: createService handles upsert behavior (deletes existing service if it exists)
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// Validate all offers
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for (const offer of offers) {
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if (!offer.sdp || typeof offer.sdp !== 'string' || offer.sdp.length === 0) {
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return c.json({ error: 'Invalid SDP in offers array' }, 400);
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}
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if (offer.sdp.length > 64 * 1024) {
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return c.json({ error: 'SDP too large (max 64KB)' }, 400);
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}
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}
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// Calculate expiry
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const authenticatedUsername = getAuthenticatedUsername(c);
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const offerTtl = Math.min(
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Math.max(ttl || config.offerDefaultTtl, config.offerMinTtl),
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config.offerMaxTtl
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);
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const expiresAt = Date.now() + offerTtl;
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// Prepare offer requests
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const offerRequests = offers.map(offer => ({
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username: authenticatedUsername,
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sdp: offer.sdp,
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expiresAt
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}));
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// Create service with offers
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const result = await storage.createService({
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serviceFqn,
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expiresAt,
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offers: offerRequests
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});
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createdOffers = result.offers;
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// Return full service details with all offers
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return c.json({
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serviceFqn: result.service.serviceFqn,
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username: result.service.username,
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serviceId: result.service.id,
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offers: result.offers.map(o => ({
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offerId: o.id,
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sdp: o.sdp,
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createdAt: o.createdAt,
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expiresAt: o.expiresAt
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})),
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createdAt: result.service.createdAt,
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expiresAt: result.service.expiresAt
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}, 201);
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// Return single response or array based on input
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return c.json(Array.isArray(body) ? responses : responses[0], 200);
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} catch (err) {
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console.error('Error creating service:', err);
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console.error('Error details:', {
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message: (err as Error).message,
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stack: (err as Error).stack,
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serviceFqn,
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offerIds: createdOffers.map(o => o.id)
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});
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console.error('RPC error:', err);
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return c.json({
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error: 'Internal server error',
|
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details: (err as Error).message
|
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}, 500);
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success: false,
|
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error: 'Invalid request format',
|
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}, 400);
|
||||
}
|
||||
});
|
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|
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/**
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* DELETE /services/:fqn
|
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* Delete a service by FQN (must include username)
|
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*/
|
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app.delete('/services/:fqn', authMiddleware, async (c) => {
|
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try {
|
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const serviceFqn = decodeURIComponent(c.req.param('fqn'));
|
||||
|
||||
// Parse and validate FQN
|
||||
const parsed = parseServiceFqn(serviceFqn);
|
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if (!parsed || !parsed.username) {
|
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return c.json({ error: 'Service FQN must include username (format: service:version@username)' }, 400);
|
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}
|
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|
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const username = parsed.username;
|
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|
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// Find service by FQN
|
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const service = await storage.getServiceByFqn(serviceFqn);
|
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if (!service) {
|
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return c.json({ error: 'Service not found' }, 404);
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||||
}
|
||||
|
||||
const deleted = await storage.deleteService(service.id, username);
|
||||
|
||||
if (!deleted) {
|
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return c.json({ error: 'Service not found or not owned by this username' }, 404);
|
||||
}
|
||||
|
||||
return c.json({ success: true }, 200);
|
||||
} catch (err) {
|
||||
console.error('Error deleting service:', err);
|
||||
return c.json({ error: 'Internal server error' }, 500);
|
||||
}
|
||||
});
|
||||
|
||||
// ===== WebRTC Signaling (Offer-Specific) =====
|
||||
|
||||
/**
|
||||
* POST /services/:fqn/offers/:offerId/answer
|
||||
* Answer a specific offer from a service
|
||||
*/
|
||||
app.post('/services/:fqn/offers/:offerId/answer', authMiddleware, async (c) => {
|
||||
try {
|
||||
const serviceFqn = decodeURIComponent(c.req.param('fqn'));
|
||||
const offerId = c.req.param('offerId');
|
||||
const body = await c.req.json();
|
||||
const { sdp } = body;
|
||||
|
||||
if (!sdp) {
|
||||
return c.json({ error: 'Missing required parameter: sdp' }, 400);
|
||||
}
|
||||
|
||||
if (typeof sdp !== 'string' || sdp.length === 0) {
|
||||
return c.json({ error: 'Invalid SDP' }, 400);
|
||||
}
|
||||
|
||||
if (sdp.length > 64 * 1024) {
|
||||
return c.json({ error: 'SDP too large (max 64KB)' }, 400);
|
||||
}
|
||||
|
||||
// Verify offer exists
|
||||
const offer = await storage.getOfferById(offerId);
|
||||
if (!offer) {
|
||||
return c.json({ error: 'Offer not found' }, 404);
|
||||
}
|
||||
|
||||
const answererUsername = getAuthenticatedUsername(c);
|
||||
|
||||
const result = await storage.answerOffer(offerId, answererUsername, sdp);
|
||||
|
||||
if (!result.success) {
|
||||
return c.json({ error: result.error }, 400);
|
||||
}
|
||||
|
||||
return c.json({
|
||||
success: true,
|
||||
offerId: offerId
|
||||
}, 200);
|
||||
} catch (err) {
|
||||
console.error('Error answering offer:', err);
|
||||
return c.json({ error: 'Internal server error' }, 500);
|
||||
}
|
||||
});
|
||||
|
||||
/**
|
||||
* GET /services/:fqn/offers/:offerId/answer
|
||||
* Get answer for a specific offer (offerer polls this)
|
||||
*/
|
||||
app.get('/services/:fqn/offers/:offerId/answer', authMiddleware, async (c) => {
|
||||
try {
|
||||
const serviceFqn = decodeURIComponent(c.req.param('fqn'));
|
||||
const offerId = c.req.param('offerId');
|
||||
const username = getAuthenticatedUsername(c);
|
||||
|
||||
// Get the offer
|
||||
const offer = await storage.getOfferById(offerId);
|
||||
if (!offer) {
|
||||
return c.json({ error: 'Offer not found' }, 404);
|
||||
}
|
||||
|
||||
// Verify ownership
|
||||
if (offer.username !== username) {
|
||||
return c.json({ error: 'Not authorized to access this offer' }, 403);
|
||||
}
|
||||
|
||||
if (!offer.answerSdp) {
|
||||
return c.json({ error: 'Offer not yet answered' }, 404);
|
||||
}
|
||||
|
||||
return c.json({
|
||||
offerId: offer.id,
|
||||
answererId: offer.answererUsername,
|
||||
sdp: offer.answerSdp,
|
||||
answeredAt: offer.answeredAt
|
||||
}, 200);
|
||||
} catch (err) {
|
||||
console.error('Error getting offer answer:', err);
|
||||
return c.json({ error: 'Internal server error' }, 500);
|
||||
}
|
||||
});
|
||||
|
||||
/**
|
||||
* GET /poll
|
||||
* Combined efficient polling endpoint for answers and ICE candidates
|
||||
* Returns all answered offers and ICE candidates for all peer's offers since timestamp
|
||||
*/
|
||||
app.get('/poll', authMiddleware, async (c) => {
|
||||
try {
|
||||
const username = getAuthenticatedUsername(c);
|
||||
const since = c.req.query('since');
|
||||
const sinceTimestamp = since ? parseInt(since, 10) : 0;
|
||||
|
||||
// Get all answered offers
|
||||
const answeredOffers = await storage.getAnsweredOffers(username);
|
||||
const filteredAnswers = since
|
||||
? answeredOffers.filter(offer => offer.answeredAt && offer.answeredAt > sinceTimestamp)
|
||||
: answeredOffers;
|
||||
|
||||
// Get all user's offers
|
||||
const allOffers = await storage.getOffersByUsername(username);
|
||||
|
||||
// For each offer, get ICE candidates from both sides
|
||||
const iceCandidatesByOffer: Record<string, any[]> = {};
|
||||
for (const offer of allOffers) {
|
||||
const allCandidates = [];
|
||||
|
||||
// Get offerer ICE candidates (answerer polls for these, offerer can also see for debugging/sync)
|
||||
const offererCandidates = await storage.getIceCandidates(offer.id, 'offerer', sinceTimestamp);
|
||||
for (const c of offererCandidates) {
|
||||
allCandidates.push({
|
||||
candidate: c.candidate,
|
||||
role: 'offerer',
|
||||
username: c.username,
|
||||
createdAt: c.createdAt
|
||||
});
|
||||
}
|
||||
|
||||
// Get answerer ICE candidates (offerer polls for these)
|
||||
const answererCandidates = await storage.getIceCandidates(offer.id, 'answerer', sinceTimestamp);
|
||||
for (const c of answererCandidates) {
|
||||
allCandidates.push({
|
||||
candidate: c.candidate,
|
||||
role: 'answerer',
|
||||
username: c.username,
|
||||
createdAt: c.createdAt
|
||||
});
|
||||
}
|
||||
|
||||
if (allCandidates.length > 0) {
|
||||
iceCandidatesByOffer[offer.id] = allCandidates;
|
||||
}
|
||||
}
|
||||
|
||||
return c.json({
|
||||
answers: filteredAnswers.map(offer => ({
|
||||
offerId: offer.id,
|
||||
serviceId: offer.serviceId,
|
||||
answererId: offer.answererUsername,
|
||||
sdp: offer.answerSdp,
|
||||
answeredAt: offer.answeredAt
|
||||
})),
|
||||
iceCandidates: iceCandidatesByOffer
|
||||
}, 200);
|
||||
} catch (err) {
|
||||
console.error('Error polling offers:', err);
|
||||
return c.json({ error: 'Internal server error' }, 500);
|
||||
}
|
||||
});
|
||||
|
||||
/**
|
||||
* POST /services/:fqn/offers/:offerId/ice-candidates
|
||||
* Add ICE candidates for a specific offer
|
||||
*/
|
||||
app.post('/services/:fqn/offers/:offerId/ice-candidates', authMiddleware, async (c) => {
|
||||
try {
|
||||
const serviceFqn = decodeURIComponent(c.req.param('fqn'));
|
||||
const offerId = c.req.param('offerId');
|
||||
const body = await c.req.json();
|
||||
const { candidates } = body;
|
||||
|
||||
if (!Array.isArray(candidates) || candidates.length === 0) {
|
||||
return c.json({ error: 'Missing or invalid required parameter: candidates' }, 400);
|
||||
}
|
||||
|
||||
const username = getAuthenticatedUsername(c);
|
||||
|
||||
// Get offer to determine role
|
||||
const offer = await storage.getOfferById(offerId);
|
||||
if (!offer) {
|
||||
return c.json({ error: 'Offer not found' }, 404);
|
||||
}
|
||||
|
||||
// Determine role (offerer or answerer)
|
||||
const role = offer.username === username ? 'offerer' : 'answerer';
|
||||
|
||||
const count = await storage.addIceCandidates(offerId, username, role, candidates);
|
||||
|
||||
return c.json({ count, offerId }, 200);
|
||||
} catch (err) {
|
||||
console.error('Error adding ICE candidates:', err);
|
||||
return c.json({ error: 'Internal server error' }, 500);
|
||||
}
|
||||
});
|
||||
|
||||
/**
|
||||
* GET /services/:fqn/offers/:offerId/ice-candidates
|
||||
* Get ICE candidates for a specific offer
|
||||
*/
|
||||
app.get('/services/:fqn/offers/:offerId/ice-candidates', authMiddleware, async (c) => {
|
||||
try {
|
||||
const serviceFqn = decodeURIComponent(c.req.param('fqn'));
|
||||
const offerId = c.req.param('offerId');
|
||||
const since = c.req.query('since');
|
||||
const username = getAuthenticatedUsername(c);
|
||||
|
||||
// Get offer to determine role
|
||||
const offer = await storage.getOfferById(offerId);
|
||||
if (!offer) {
|
||||
return c.json({ error: 'Offer not found' }, 404);
|
||||
}
|
||||
|
||||
// Get candidates for opposite role
|
||||
const targetRole = offer.username === username ? 'answerer' : 'offerer';
|
||||
const sinceTimestamp = since ? parseInt(since, 10) : undefined;
|
||||
|
||||
const candidates = await storage.getIceCandidates(offerId, targetRole, sinceTimestamp);
|
||||
|
||||
return c.json({
|
||||
candidates: candidates.map(c => ({
|
||||
candidate: c.candidate,
|
||||
createdAt: c.createdAt
|
||||
})),
|
||||
offerId
|
||||
}, 200);
|
||||
} catch (err) {
|
||||
console.error('Error getting ICE candidates:', err);
|
||||
return c.json({ error: 'Internal server error' }, 500);
|
||||
}
|
||||
// 404 for all other routes
|
||||
app.all('*', (c) => {
|
||||
return c.json({
|
||||
error: 'Not found. Use POST /rpc for all API calls.',
|
||||
}, 404);
|
||||
});
|
||||
|
||||
return app;
|
||||
|
||||
@@ -1,84 +0,0 @@
|
||||
import { Context, Next } from 'hono';
|
||||
import { verifyEd25519Signature, validateAuthMessage } from '../crypto.ts';
|
||||
import { Storage } from '../storage/types.ts';
|
||||
|
||||
/**
|
||||
* Authentication middleware for Rondevu - Ed25519 signature-based
|
||||
* Verifies username ownership via Ed25519 signatures
|
||||
*
|
||||
* For POST requests: Extracts username, signature, message from request body
|
||||
* For GET requests: Extracts username, signature, message from query params
|
||||
*/
|
||||
export function createAuthMiddleware(storage: Storage) {
|
||||
return async (c: Context, next: Next) => {
|
||||
let username: string | undefined;
|
||||
let signature: string | undefined;
|
||||
let message: string | undefined;
|
||||
|
||||
// Determine if this is a GET or POST request
|
||||
if (c.req.method === 'GET') {
|
||||
// Extract from query params
|
||||
const query = c.req.query();
|
||||
username = query.username;
|
||||
signature = query.signature;
|
||||
message = query.message;
|
||||
} else {
|
||||
// Extract from request body
|
||||
try {
|
||||
const body = await c.req.json();
|
||||
username = body.username;
|
||||
signature = body.signature;
|
||||
message = body.message;
|
||||
} catch (err) {
|
||||
return c.json({ error: 'Invalid JSON body' }, 400);
|
||||
}
|
||||
}
|
||||
|
||||
// Validate presence of auth fields
|
||||
if (!username || !signature || !message) {
|
||||
return c.json({
|
||||
error: 'Missing authentication fields: username, signature, and message are required'
|
||||
}, 401);
|
||||
}
|
||||
|
||||
// Get username record to fetch public key
|
||||
const usernameRecord = await storage.getUsername(username);
|
||||
if (!usernameRecord) {
|
||||
return c.json({
|
||||
error: `Username "${username}" is not claimed. Please claim username first.`
|
||||
}, 401);
|
||||
}
|
||||
|
||||
// Verify Ed25519 signature
|
||||
const isValid = await verifyEd25519Signature(
|
||||
usernameRecord.publicKey,
|
||||
signature,
|
||||
message
|
||||
);
|
||||
if (!isValid) {
|
||||
return c.json({ error: 'Invalid signature' }, 401);
|
||||
}
|
||||
|
||||
// Validate message format and timestamp
|
||||
const validation = validateAuthMessage(username, message);
|
||||
if (!validation.valid) {
|
||||
return c.json({ error: validation.error }, 401);
|
||||
}
|
||||
|
||||
// Store authenticated username in context
|
||||
c.set('username', username);
|
||||
|
||||
await next();
|
||||
};
|
||||
}
|
||||
|
||||
/**
|
||||
* Helper to get authenticated username from context
|
||||
*/
|
||||
export function getAuthenticatedUsername(c: Context): string {
|
||||
const username = c.get('username');
|
||||
if (!username) {
|
||||
throw new Error('No authenticated username in context');
|
||||
}
|
||||
return username;
|
||||
}
|
||||
721
src/rpc.ts
Normal file
721
src/rpc.ts
Normal file
@@ -0,0 +1,721 @@
|
||||
import { Context } from 'hono';
|
||||
import { Storage } from './storage/types.ts';
|
||||
import { Config } from './config.ts';
|
||||
import {
|
||||
validateUsernameClaim,
|
||||
validateServicePublish,
|
||||
validateServiceFqn,
|
||||
parseServiceFqn,
|
||||
isVersionCompatible,
|
||||
verifyEd25519Signature,
|
||||
validateAuthMessage,
|
||||
} from './crypto.ts';
|
||||
|
||||
/**
|
||||
* RPC request format
|
||||
*/
|
||||
export interface RpcRequest {
|
||||
method: string;
|
||||
message: string;
|
||||
signature: string;
|
||||
params?: any;
|
||||
}
|
||||
|
||||
/**
|
||||
* RPC response format
|
||||
*/
|
||||
export interface RpcResponse {
|
||||
success: boolean;
|
||||
result?: any;
|
||||
error?: string;
|
||||
}
|
||||
|
||||
/**
|
||||
* RPC method handler
|
||||
*/
|
||||
type RpcHandler = (
|
||||
params: any,
|
||||
message: string,
|
||||
signature: string,
|
||||
storage: Storage,
|
||||
config: Config
|
||||
) => Promise<any>;
|
||||
|
||||
/**
|
||||
* Verify authentication for a method call
|
||||
*/
|
||||
async function verifyAuth(
|
||||
username: string,
|
||||
message: string,
|
||||
signature: string,
|
||||
storage: Storage
|
||||
): Promise<{ valid: boolean; error?: string }> {
|
||||
// Get username record to fetch public key
|
||||
const usernameRecord = await storage.getUsername(username);
|
||||
if (!usernameRecord) {
|
||||
return {
|
||||
valid: false,
|
||||
error: `Username "${username}" is not claimed. Please claim username first.`,
|
||||
};
|
||||
}
|
||||
|
||||
// Verify Ed25519 signature
|
||||
const isValid = await verifyEd25519Signature(
|
||||
usernameRecord.publicKey,
|
||||
signature,
|
||||
message
|
||||
);
|
||||
if (!isValid) {
|
||||
return { valid: false, error: 'Invalid signature' };
|
||||
}
|
||||
|
||||
// Validate message format and timestamp
|
||||
const validation = validateAuthMessage(username, message);
|
||||
if (!validation.valid) {
|
||||
return { valid: false, error: validation.error };
|
||||
}
|
||||
|
||||
return { valid: true };
|
||||
}
|
||||
|
||||
/**
|
||||
* Extract username from message
|
||||
*/
|
||||
function extractUsername(message: string): string | null {
|
||||
// Message format: method:username:...
|
||||
const parts = message.split(':');
|
||||
if (parts.length < 2) return null;
|
||||
return parts[1];
|
||||
}
|
||||
|
||||
/**
|
||||
* RPC Method Handlers
|
||||
*/
|
||||
|
||||
const handlers: Record<string, RpcHandler> = {
|
||||
/**
|
||||
* Check if username is available
|
||||
*/
|
||||
async getUser(params, message, signature, storage, config) {
|
||||
const { username } = params;
|
||||
const claimed = await storage.getUsername(username);
|
||||
|
||||
if (!claimed) {
|
||||
return {
|
||||
username,
|
||||
available: true,
|
||||
};
|
||||
}
|
||||
|
||||
return {
|
||||
username: claimed.username,
|
||||
available: false,
|
||||
claimedAt: claimed.claimedAt,
|
||||
expiresAt: claimed.expiresAt,
|
||||
publicKey: claimed.publicKey,
|
||||
};
|
||||
},
|
||||
|
||||
/**
|
||||
* Claim a username
|
||||
*/
|
||||
async claimUsername(params, message, signature, storage, config) {
|
||||
const { username, publicKey } = params;
|
||||
|
||||
// Validate claim
|
||||
const validation = await validateUsernameClaim({
|
||||
username,
|
||||
publicKey,
|
||||
signature,
|
||||
message,
|
||||
});
|
||||
|
||||
if (!validation.valid) {
|
||||
throw new Error(validation.error || 'Invalid username claim');
|
||||
}
|
||||
|
||||
// Claim the username
|
||||
const expiresAt = Date.now() + 365 * 24 * 60 * 60 * 1000; // 365 days
|
||||
await storage.claimUsername({
|
||||
username,
|
||||
publicKey,
|
||||
expiresAt,
|
||||
});
|
||||
|
||||
return { success: true, username };
|
||||
},
|
||||
|
||||
/**
|
||||
* Get service by FQN
|
||||
*/
|
||||
async getService(params, message, signature, storage, config) {
|
||||
const { serviceFqn, limit, offset } = params;
|
||||
const username = extractUsername(message);
|
||||
|
||||
// Verify authentication
|
||||
if (username) {
|
||||
const auth = await verifyAuth(username, message, signature, storage);
|
||||
if (!auth.valid) {
|
||||
throw new Error(auth.error);
|
||||
}
|
||||
}
|
||||
|
||||
// Parse and validate FQN
|
||||
const fqnValidation = validateServiceFqn(serviceFqn);
|
||||
if (!fqnValidation.valid) {
|
||||
throw new Error(fqnValidation.error || 'Invalid service FQN');
|
||||
}
|
||||
|
||||
const parsed = parseServiceFqn(serviceFqn);
|
||||
if (!parsed) {
|
||||
throw new Error('Failed to parse service FQN');
|
||||
}
|
||||
|
||||
// Paginated discovery mode
|
||||
if (limit !== undefined) {
|
||||
const pageLimit = Math.min(Math.max(1, limit), 100);
|
||||
const pageOffset = Math.max(0, offset || 0);
|
||||
|
||||
const allServices = await storage.getServicesByName(
|
||||
parsed.service,
|
||||
parsed.version
|
||||
);
|
||||
const compatibleServices = allServices.filter((s) => {
|
||||
const serviceVersion = parseServiceFqn(s.serviceFqn);
|
||||
return (
|
||||
serviceVersion &&
|
||||
isVersionCompatible(parsed.version, serviceVersion.version)
|
||||
);
|
||||
});
|
||||
|
||||
const usernameSet = new Set<string>();
|
||||
const uniqueServices: any[] = [];
|
||||
|
||||
for (const service of compatibleServices) {
|
||||
if (!usernameSet.has(service.username)) {
|
||||
usernameSet.add(service.username);
|
||||
const offers = await storage.getOffersByService(service.id);
|
||||
const availableOffer = offers.find((o) => !o.answererUsername);
|
||||
|
||||
if (availableOffer) {
|
||||
uniqueServices.push({
|
||||
serviceId: service.id,
|
||||
username: service.username,
|
||||
serviceFqn: service.serviceFqn,
|
||||
offerId: availableOffer.id,
|
||||
sdp: availableOffer.sdp,
|
||||
createdAt: service.createdAt,
|
||||
expiresAt: service.expiresAt,
|
||||
});
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
const paginatedServices = uniqueServices.slice(
|
||||
pageOffset,
|
||||
pageOffset + pageLimit
|
||||
);
|
||||
|
||||
return {
|
||||
services: paginatedServices,
|
||||
count: paginatedServices.length,
|
||||
limit: pageLimit,
|
||||
offset: pageOffset,
|
||||
};
|
||||
}
|
||||
|
||||
// Direct lookup with username
|
||||
if (parsed.username) {
|
||||
const service = await storage.getServiceByFqn(serviceFqn);
|
||||
if (!service) {
|
||||
throw new Error('Service not found');
|
||||
}
|
||||
|
||||
const offers = await storage.getOffersByService(service.id);
|
||||
const availableOffer = offers.find((o) => !o.answererUsername);
|
||||
|
||||
if (!availableOffer) {
|
||||
throw new Error('Service has no available offers');
|
||||
}
|
||||
|
||||
return {
|
||||
serviceId: service.id,
|
||||
username: service.username,
|
||||
serviceFqn: service.serviceFqn,
|
||||
offerId: availableOffer.id,
|
||||
sdp: availableOffer.sdp,
|
||||
createdAt: service.createdAt,
|
||||
expiresAt: service.expiresAt,
|
||||
};
|
||||
}
|
||||
|
||||
// Random discovery without username
|
||||
const allServices = await storage.getServicesByName(
|
||||
parsed.service,
|
||||
parsed.version
|
||||
);
|
||||
const compatibleServices = allServices.filter((s) => {
|
||||
const serviceVersion = parseServiceFqn(s.serviceFqn);
|
||||
return (
|
||||
serviceVersion &&
|
||||
isVersionCompatible(parsed.version, serviceVersion.version)
|
||||
);
|
||||
});
|
||||
|
||||
if (compatibleServices.length === 0) {
|
||||
throw new Error('No services found');
|
||||
}
|
||||
|
||||
const randomService =
|
||||
compatibleServices[
|
||||
Math.floor(Math.random() * compatibleServices.length)
|
||||
];
|
||||
const offers = await storage.getOffersByService(randomService.id);
|
||||
const availableOffer = offers.find((o) => !o.answererUsername);
|
||||
|
||||
if (!availableOffer) {
|
||||
throw new Error('Service has no available offers');
|
||||
}
|
||||
|
||||
return {
|
||||
serviceId: randomService.id,
|
||||
username: randomService.username,
|
||||
serviceFqn: randomService.serviceFqn,
|
||||
offerId: availableOffer.id,
|
||||
sdp: availableOffer.sdp,
|
||||
createdAt: randomService.createdAt,
|
||||
expiresAt: randomService.expiresAt,
|
||||
};
|
||||
},
|
||||
|
||||
/**
|
||||
* Publish a service
|
||||
*/
|
||||
async publishService(params, message, signature, storage, config) {
|
||||
const { serviceFqn, offers, ttl } = params;
|
||||
const username = extractUsername(message);
|
||||
|
||||
if (!username) {
|
||||
throw new Error('Username required for service publishing');
|
||||
}
|
||||
|
||||
// Verify authentication
|
||||
const auth = await verifyAuth(username, message, signature, storage);
|
||||
if (!auth.valid) {
|
||||
throw new Error(auth.error);
|
||||
}
|
||||
|
||||
// Validate service FQN
|
||||
const fqnValidation = validateServiceFqn(serviceFqn);
|
||||
if (!fqnValidation.valid) {
|
||||
throw new Error(fqnValidation.error || 'Invalid service FQN');
|
||||
}
|
||||
|
||||
const parsed = parseServiceFqn(serviceFqn);
|
||||
if (!parsed || !parsed.username) {
|
||||
throw new Error('Service FQN must include username');
|
||||
}
|
||||
|
||||
if (parsed.username !== username) {
|
||||
throw new Error('Service FQN username must match authenticated username');
|
||||
}
|
||||
|
||||
// Validate offers
|
||||
if (!offers || !Array.isArray(offers) || offers.length === 0) {
|
||||
throw new Error('Must provide at least one offer');
|
||||
}
|
||||
|
||||
if (offers.length > config.maxOffersPerRequest) {
|
||||
throw new Error(
|
||||
`Too many offers (max ${config.maxOffersPerRequest})`
|
||||
);
|
||||
}
|
||||
|
||||
// Create service
|
||||
const now = Date.now();
|
||||
const offerTtl =
|
||||
ttl !== undefined
|
||||
? Math.min(
|
||||
Math.max(ttl, config.offerMinTtl),
|
||||
config.offerMaxTtl
|
||||
)
|
||||
: config.offerDefaultTtl;
|
||||
const expiresAt = now + offerTtl;
|
||||
|
||||
const service = await storage.createService({
|
||||
username,
|
||||
serviceFqn,
|
||||
serviceName: parsed.service,
|
||||
version: parsed.version,
|
||||
expiresAt,
|
||||
});
|
||||
|
||||
// Create offers
|
||||
const createdOffers = [];
|
||||
for (const offer of offers) {
|
||||
const createdOffer = await storage.createOffer({
|
||||
username,
|
||||
serviceId: service.id,
|
||||
serviceFqn,
|
||||
sdp: offer.sdp,
|
||||
ttl: offerTtl,
|
||||
});
|
||||
createdOffers.push({
|
||||
offerId: createdOffer.id,
|
||||
sdp: createdOffer.sdp,
|
||||
createdAt: createdOffer.createdAt,
|
||||
expiresAt: createdOffer.expiresAt,
|
||||
});
|
||||
}
|
||||
|
||||
return {
|
||||
serviceId: service.id,
|
||||
username: service.username,
|
||||
serviceFqn: service.serviceFqn,
|
||||
offers: createdOffers,
|
||||
createdAt: service.createdAt,
|
||||
expiresAt: service.expiresAt,
|
||||
};
|
||||
},
|
||||
|
||||
/**
|
||||
* Delete a service
|
||||
*/
|
||||
async deleteService(params, message, signature, storage, config) {
|
||||
const { serviceFqn } = params;
|
||||
const username = extractUsername(message);
|
||||
|
||||
if (!username) {
|
||||
throw new Error('Username required');
|
||||
}
|
||||
|
||||
// Verify authentication
|
||||
const auth = await verifyAuth(username, message, signature, storage);
|
||||
if (!auth.valid) {
|
||||
throw new Error(auth.error);
|
||||
}
|
||||
|
||||
const parsed = parseServiceFqn(serviceFqn);
|
||||
if (!parsed || !parsed.username) {
|
||||
throw new Error('Service FQN must include username');
|
||||
}
|
||||
|
||||
const service = await storage.getServiceByFqn(serviceFqn);
|
||||
if (!service) {
|
||||
throw new Error('Service not found');
|
||||
}
|
||||
|
||||
const deleted = await storage.deleteService(service.id, username);
|
||||
if (!deleted) {
|
||||
throw new Error('Service not found or not owned by this username');
|
||||
}
|
||||
|
||||
return { success: true };
|
||||
},
|
||||
|
||||
/**
|
||||
* Answer an offer
|
||||
*/
|
||||
async answerOffer(params, message, signature, storage, config) {
|
||||
const { serviceFqn, offerId, sdp } = params;
|
||||
const username = extractUsername(message);
|
||||
|
||||
if (!username) {
|
||||
throw new Error('Username required');
|
||||
}
|
||||
|
||||
// Verify authentication
|
||||
const auth = await verifyAuth(username, message, signature, storage);
|
||||
if (!auth.valid) {
|
||||
throw new Error(auth.error);
|
||||
}
|
||||
|
||||
if (!sdp || typeof sdp !== 'string' || sdp.length === 0) {
|
||||
throw new Error('Invalid SDP');
|
||||
}
|
||||
|
||||
if (sdp.length > 64 * 1024) {
|
||||
throw new Error('SDP too large (max 64KB)');
|
||||
}
|
||||
|
||||
const offer = await storage.getOfferById(offerId);
|
||||
if (!offer) {
|
||||
throw new Error('Offer not found');
|
||||
}
|
||||
|
||||
if (offer.answererUsername) {
|
||||
throw new Error('Offer already answered');
|
||||
}
|
||||
|
||||
await storage.answerOffer(offerId, username, sdp);
|
||||
|
||||
return { success: true, offerId };
|
||||
},
|
||||
|
||||
/**
|
||||
* Get answer for an offer
|
||||
*/
|
||||
async getOfferAnswer(params, message, signature, storage, config) {
|
||||
const { serviceFqn, offerId } = params;
|
||||
const username = extractUsername(message);
|
||||
|
||||
if (!username) {
|
||||
throw new Error('Username required');
|
||||
}
|
||||
|
||||
// Verify authentication
|
||||
const auth = await verifyAuth(username, message, signature, storage);
|
||||
if (!auth.valid) {
|
||||
throw new Error(auth.error);
|
||||
}
|
||||
|
||||
const offer = await storage.getOfferById(offerId);
|
||||
if (!offer) {
|
||||
throw new Error('Offer not found');
|
||||
}
|
||||
|
||||
if (offer.username !== username) {
|
||||
throw new Error('Not authorized to access this offer');
|
||||
}
|
||||
|
||||
if (!offer.answererUsername || !offer.answerSdp) {
|
||||
throw new Error('Offer not yet answered');
|
||||
}
|
||||
|
||||
return {
|
||||
sdp: offer.answerSdp,
|
||||
offerId: offer.id,
|
||||
answererId: offer.answererUsername,
|
||||
answeredAt: offer.answeredAt,
|
||||
};
|
||||
},
|
||||
|
||||
/**
|
||||
* Combined polling for answers and ICE candidates
|
||||
*/
|
||||
async poll(params, message, signature, storage, config) {
|
||||
const { since } = params;
|
||||
const username = extractUsername(message);
|
||||
|
||||
if (!username) {
|
||||
throw new Error('Username required');
|
||||
}
|
||||
|
||||
// Verify authentication
|
||||
const auth = await verifyAuth(username, message, signature, storage);
|
||||
if (!auth.valid) {
|
||||
throw new Error(auth.error);
|
||||
}
|
||||
|
||||
const sinceTimestamp = since || 0;
|
||||
|
||||
// Get all answered offers
|
||||
const answeredOffers = await storage.getAnsweredOffers(username);
|
||||
const filteredAnswers = answeredOffers.filter(
|
||||
(offer) => offer.answeredAt && offer.answeredAt > sinceTimestamp
|
||||
);
|
||||
|
||||
// Get all user's offers
|
||||
const allOffers = await storage.getOffersByUsername(username);
|
||||
|
||||
// For each offer, get ICE candidates from both sides
|
||||
const iceCandidatesByOffer: Record<string, any[]> = {};
|
||||
|
||||
for (const offer of allOffers) {
|
||||
const offererCandidates = await storage.getIceCandidates(
|
||||
offer.id,
|
||||
'offerer',
|
||||
sinceTimestamp
|
||||
);
|
||||
const answererCandidates = await storage.getIceCandidates(
|
||||
offer.id,
|
||||
'answerer',
|
||||
sinceTimestamp
|
||||
);
|
||||
|
||||
const allCandidates = [
|
||||
...offererCandidates.map((c: any) => ({
|
||||
...c,
|
||||
role: 'offerer' as const,
|
||||
})),
|
||||
...answererCandidates.map((c: any) => ({
|
||||
...c,
|
||||
role: 'answerer' as const,
|
||||
})),
|
||||
];
|
||||
|
||||
if (allCandidates.length > 0) {
|
||||
const isOfferer = offer.username === username;
|
||||
const filtered = allCandidates.filter((c) =>
|
||||
isOfferer ? c.role === 'answerer' : c.role === 'offerer'
|
||||
);
|
||||
|
||||
if (filtered.length > 0) {
|
||||
iceCandidatesByOffer[offer.id] = filtered;
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
return {
|
||||
answers: filteredAnswers.map((offer) => ({
|
||||
offerId: offer.id,
|
||||
serviceId: offer.serviceId,
|
||||
answererId: offer.answererUsername,
|
||||
sdp: offer.answerSdp,
|
||||
answeredAt: offer.answeredAt,
|
||||
})),
|
||||
iceCandidates: iceCandidatesByOffer,
|
||||
};
|
||||
},
|
||||
|
||||
/**
|
||||
* Add ICE candidates
|
||||
*/
|
||||
async addIceCandidates(params, message, signature, storage, config) {
|
||||
const { serviceFqn, offerId, candidates } = params;
|
||||
const username = extractUsername(message);
|
||||
|
||||
if (!username) {
|
||||
throw new Error('Username required');
|
||||
}
|
||||
|
||||
// Verify authentication
|
||||
const auth = await verifyAuth(username, message, signature, storage);
|
||||
if (!auth.valid) {
|
||||
throw new Error(auth.error);
|
||||
}
|
||||
|
||||
if (!Array.isArray(candidates) || candidates.length === 0) {
|
||||
throw new Error('Missing or invalid required parameter: candidates');
|
||||
}
|
||||
|
||||
const offer = await storage.getOfferById(offerId);
|
||||
if (!offer) {
|
||||
throw new Error('Offer not found');
|
||||
}
|
||||
|
||||
const role = offer.username === username ? 'offerer' : 'answerer';
|
||||
const count = await storage.addIceCandidates(
|
||||
offerId,
|
||||
username,
|
||||
role,
|
||||
candidates
|
||||
);
|
||||
|
||||
return { count, offerId };
|
||||
},
|
||||
|
||||
/**
|
||||
* Get ICE candidates
|
||||
*/
|
||||
async getIceCandidates(params, message, signature, storage, config) {
|
||||
const { serviceFqn, offerId, since } = params;
|
||||
const username = extractUsername(message);
|
||||
|
||||
if (!username) {
|
||||
throw new Error('Username required');
|
||||
}
|
||||
|
||||
// Verify authentication
|
||||
const auth = await verifyAuth(username, message, signature, storage);
|
||||
if (!auth.valid) {
|
||||
throw new Error(auth.error);
|
||||
}
|
||||
|
||||
const sinceTimestamp = since || 0;
|
||||
|
||||
const offer = await storage.getOfferById(offerId);
|
||||
if (!offer) {
|
||||
throw new Error('Offer not found');
|
||||
}
|
||||
|
||||
const isOfferer = offer.username === username;
|
||||
const role = isOfferer ? 'answerer' : 'offerer';
|
||||
|
||||
const candidates = await storage.getIceCandidates(
|
||||
offerId,
|
||||
role,
|
||||
sinceTimestamp
|
||||
);
|
||||
|
||||
return {
|
||||
candidates: candidates.map((c: any) => ({
|
||||
candidate: c.candidate,
|
||||
createdAt: c.createdAt,
|
||||
})),
|
||||
offerId,
|
||||
};
|
||||
},
|
||||
};
|
||||
|
||||
/**
|
||||
* Handle RPC batch request
|
||||
*/
|
||||
export async function handleRpc(
|
||||
requests: RpcRequest[],
|
||||
storage: Storage,
|
||||
config: Config
|
||||
): Promise<RpcResponse[]> {
|
||||
const responses: RpcResponse[] = [];
|
||||
|
||||
for (const request of requests) {
|
||||
try {
|
||||
const { method, message, signature, params } = request;
|
||||
|
||||
// Validate request
|
||||
if (!method || typeof method !== 'string') {
|
||||
responses.push({
|
||||
success: false,
|
||||
error: 'Missing or invalid method',
|
||||
});
|
||||
continue;
|
||||
}
|
||||
|
||||
if (!message || typeof message !== 'string') {
|
||||
responses.push({
|
||||
success: false,
|
||||
error: 'Missing or invalid message',
|
||||
});
|
||||
}
|
||||
|
||||
if (!signature || typeof signature !== 'string') {
|
||||
responses.push({
|
||||
success: false,
|
||||
error: 'Missing or invalid signature',
|
||||
});
|
||||
continue;
|
||||
}
|
||||
|
||||
// Get handler
|
||||
const handler = handlers[method];
|
||||
if (!handler) {
|
||||
responses.push({
|
||||
success: false,
|
||||
error: `Unknown method: ${method}`,
|
||||
});
|
||||
continue;
|
||||
}
|
||||
|
||||
// Execute handler
|
||||
const result = await handler(
|
||||
params || {},
|
||||
message,
|
||||
signature,
|
||||
storage,
|
||||
config
|
||||
);
|
||||
|
||||
responses.push({
|
||||
success: true,
|
||||
result,
|
||||
});
|
||||
} catch (err) {
|
||||
responses.push({
|
||||
success: false,
|
||||
error: (err as Error).message || 'Internal server error',
|
||||
});
|
||||
}
|
||||
}
|
||||
|
||||
return responses;
|
||||
}
|
||||
Reference in New Issue
Block a user