Files
i-want-to-heal-2/server/index.mjs
T

584 lines
19 KiB
JavaScript

import { createReadStream, existsSync, statSync } from 'node:fs'
import { readFile } from 'node:fs/promises'
import {
createHash,
randomBytes,
scryptSync,
timingSafeEqual,
} from 'node:crypto'
import { createServer } from 'node:http'
import { extname, join, normalize } from 'node:path'
import { fileURLToPath } from 'node:url'
import { createPool, waitForDatabase } from './db.mjs'
const __dirname = fileURLToPath(new URL('.', import.meta.url))
const rootDir = normalize(join(__dirname, '..'))
const distDir = join(rootDir, 'dist')
const host = process.env.HOST ?? '0.0.0.0'
const port = Number(process.env.PORT ?? 4173)
const pool = createPool()
const sessionCookieName = 'iwanttoheal2_session'
const sessionLifetimeSeconds = 60 * 60 * 24 * 30
const arenaQueue = new Map()
const arenaMatches = new Map()
const arenaQueueTtlMs = 15 * 1000
const arenaMatchTtlMs = 60 * 60 * 1000
const corsOrigins = new Set(
(process.env.CORS_ORIGINS ?? '')
.split(',')
.map((origin) => origin.trim())
.filter(Boolean),
)
const mimeTypes = {
'.css': 'text/css; charset=utf-8',
'.html': 'text/html; charset=utf-8',
'.js': 'text/javascript; charset=utf-8',
'.json': 'application/json; charset=utf-8',
'.map': 'application/json; charset=utf-8',
'.png': 'image/png',
'.svg': 'image/svg+xml',
'.webp': 'image/webp',
}
await waitForDatabase(pool)
const server = createServer(async (request, response) => {
try {
applyCors(request, response)
if (request.method === 'OPTIONS') {
response.writeHead(204)
response.end()
return
}
const url = new URL(request.url ?? '/', `http://${request.headers.host ?? 'localhost'}`)
if (url.pathname.startsWith('/api/')) {
await handleApi(request, response, url)
return
}
await serveStatic(response, url.pathname)
} catch (error) {
const status = Number(error?.status) || (request.url?.startsWith('/api/') ? 400 : 500)
if (status >= 500) console.error(error)
sendJson(response, status, {
error: status >= 500
? 'internal_error'
: error instanceof Error
? error.message
: 'Unable to process request.',
})
}
})
server.listen(port, host, () => {
console.log(`Action Mode server listening on ${host}:${port}`)
})
function applyCors(request, response) {
const origin = request.headers.origin
if (origin && corsOrigins.has(origin)) {
response.setHeader('Access-Control-Allow-Origin', origin)
response.setHeader('Vary', 'Origin')
}
response.setHeader('Access-Control-Allow-Credentials', 'true')
response.setHeader('Access-Control-Allow-Headers', 'authorization,content-type,x-auth-issuer,x-auth-subject,x-display-name')
response.setHeader('Access-Control-Allow-Methods', 'GET,POST,PUT,DELETE,OPTIONS')
}
async function handleApi(request, response, url) {
if (await handleAuthApi(request, response, url)) return
if (request.method === 'GET' && url.pathname === '/api/health') {
const db = await pool.query('select now() as now')
sendJson(response, 200, { ok: true, database: 'ok', now: db.rows[0].now })
return
}
if (request.method === 'GET' && url.pathname === '/api/me') {
const user = await requireUser(request, response)
if (!user) return
sendJson(response, 200, { user })
return
}
if (request.method === 'GET' && url.pathname.startsWith('/api/save/')) {
const user = await requireUser(request, response)
if (!user) return
const slotKey = decodeURIComponent(url.pathname.replace('/api/save/', '')) || 'default'
const save = await pool.query(
'select slot_key, save_json, save_version, client_updated_at, updated_at from save_slots where user_id = $1 and slot_key = $2',
[user.id, slotKey],
)
sendJson(response, 200, { save: save.rows[0] ?? null })
return
}
if (request.method === 'PUT' && url.pathname.startsWith('/api/save/')) {
const user = await requireUser(request, response)
if (!user) return
const slotKey = decodeURIComponent(url.pathname.replace('/api/save/', '')) || 'default'
const body = await readJson(request)
if (!body || typeof body.save !== 'object') {
sendJson(response, 400, { error: 'invalid_save_payload' })
return
}
const saved = await pool.query(
`
insert into save_slots (user_id, slot_key, save_json, save_version, client_updated_at, updated_at)
values ($1, $2, $3, $4, $5, now())
on conflict (user_id, slot_key)
do update set
save_json = excluded.save_json,
save_version = excluded.save_version,
client_updated_at = excluded.client_updated_at,
updated_at = now()
returning slot_key, save_json, save_version, client_updated_at, updated_at
`,
[user.id, slotKey, body.save, Number(body.saveVersion ?? 1), body.clientUpdatedAt ?? null],
)
sendJson(response, 200, { save: saved.rows[0] })
return
}
if (request.method === 'POST' && url.pathname === '/api/pvp/queue') {
const user = await requireUser(request, response)
if (!user) return
const body = await readJson(request)
const mode = String(body?.mode ?? 'action-healer')
if (mode === 'arenas') {
sendJson(response, 200, joinArenaQueue(user))
return
}
const rating = Number(body?.rating ?? 1000)
const queued = await pool.query(
`
insert into pvp_queue (user_id, mode, rating, status, updated_at)
values ($1, $2, $3, 'queued', now())
on conflict (user_id, mode, status)
do update set rating = excluded.rating, updated_at = now()
returning id, mode, rating, status, queued_at, updated_at
`,
[user.id, mode, rating],
)
sendJson(response, 200, { queue: queued.rows[0] })
return
}
const arenaQueueTicket = url.pathname.match(/^\/api\/pvp\/queue\/([A-Za-z0-9_-]+)$/)
if (request.method === 'GET' && arenaQueueTicket) {
const user = await requireUser(request, response)
if (!user) return
sendJson(response, 200, checkArenaQueue(user, arenaQueueTicket[1]))
return
}
if (request.method === 'DELETE' && url.pathname === '/api/pvp/queue') {
const user = await requireUser(request, response)
if (!user) return
const mode = url.searchParams.get('mode') ?? 'action-healer'
await pool.query('delete from pvp_queue where user_id = $1 and mode = $2 and status = $3', [user.id, mode, 'queued'])
sendJson(response, 200, { ok: true })
return
}
if (request.method === 'DELETE' && arenaQueueTicket) {
const user = await requireUser(request, response)
if (!user) return
cancelArenaQueue(user, arenaQueueTicket[1])
sendJson(response, 200, { ok: true })
return
}
sendJson(response, 404, { error: 'not_found' })
}
function cleanupArenaMemory(now = Date.now()) {
for (const [ticketId, ticket] of arenaQueue.entries()) {
if (now - ticket.updatedAt > arenaQueueTtlMs) arenaQueue.delete(ticketId)
}
for (const [matchId, match] of arenaMatches.entries()) {
if (now - match.updatedAt > arenaMatchTtlMs) arenaMatches.delete(matchId)
}
}
function arenaPlayerInfo(user) {
return {
accountId: user.id,
displayName: user.display_name ?? user.username ?? 'Arena Player',
username: user.username ?? user.auth_subject,
}
}
function arenaSnapshot(match) {
return {
id: match.id,
mode: 'arenas',
createdAt: match.createdAt,
players: match.players,
updatedAt: match.updatedAt,
}
}
function createArenaMatch(players, now = Date.now()) {
const match = {
id: randomBytes(12).toString('base64url'),
players,
createdAt: now,
updatedAt: now,
}
arenaMatches.set(match.id, match)
return match
}
function joinArenaQueue(user) {
const now = Date.now()
cleanupArenaMemory(now)
const existingTicket = [...arenaQueue.values()].find((ticket) => ticket.accountId === user.id)
if (existingTicket?.matchId) {
const match = arenaMatches.get(existingTicket.matchId)
if (match) {
const side = match.players.a.accountId === user.id ? 'a' : 'b'
return { ticketId: existingTicket.id, status: 'matched', side, match: arenaSnapshot(match) }
}
}
const opponent = [...arenaQueue.values()]
.filter((ticket) => !ticket.matchId && ticket.accountId !== user.id)
.sort((left, right) => left.createdAt - right.createdAt)[0]
const player = arenaPlayerInfo(user)
if (opponent) {
const match = createArenaMatch({
a: { side: 'a', ...opponent.player },
b: { side: 'b', ...player },
}, now)
opponent.matchId = match.id
opponent.updatedAt = now
const ticketId = randomBytes(12).toString('base64url')
arenaQueue.set(ticketId, {
id: ticketId,
accountId: user.id,
player,
matchId: match.id,
createdAt: now,
updatedAt: now,
})
return { ticketId, status: 'matched', side: 'b', match: arenaSnapshot(match) }
}
if (existingTicket) {
existingTicket.updatedAt = now
return { ticketId: existingTicket.id, status: 'waiting' }
}
const ticketId = randomBytes(12).toString('base64url')
arenaQueue.set(ticketId, {
id: ticketId,
accountId: user.id,
player,
createdAt: now,
updatedAt: now,
})
return { ticketId, status: 'waiting' }
}
function checkArenaQueue(user, ticketId) {
cleanupArenaMemory()
const ticket = arenaQueue.get(ticketId)
if (!ticket || ticket.accountId !== user.id) {
const error = new Error('Arena queue ticket not found.')
error.status = 404
throw error
}
ticket.updatedAt = Date.now()
if (!ticket.matchId) return { ticketId, status: 'waiting' }
const match = arenaMatches.get(ticket.matchId)
if (!match) return { ticketId, status: 'waiting' }
const side = match.players.a.accountId === user.id ? 'a' : 'b'
return { ticketId, status: 'matched', side, match: arenaSnapshot(match) }
}
function cancelArenaQueue(user, ticketId) {
const ticket = arenaQueue.get(ticketId)
if (ticket && ticket.accountId === user.id && !ticket.matchId) arenaQueue.delete(ticketId)
}
async function handleAuthApi(request, response, url) {
if (!url.pathname.startsWith('/api/auth/')) return false
if (request.method === 'POST' && url.pathname === '/api/auth/register') {
const body = await readJson(request)
const result = await registerAccount(request, body)
sendJson(response, 201, result, { 'Set-Cookie': sessionCookie(result.token, request) })
return true
}
if (request.method === 'POST' && url.pathname === '/api/auth/login') {
const body = await readJson(request)
const result = await loginAccount(request, body)
sendJson(response, 200, result, { 'Set-Cookie': sessionCookie(result.token, request) })
return true
}
if (request.method === 'GET' && url.pathname === '/api/auth/session') {
const session = await currentSession(request)
sendJson(response, 200, {
account: session ? accountPayload(session) : null,
profile: null,
})
return true
}
if (request.method === 'POST' && url.pathname === '/api/auth/logout') {
const token = requestSessionToken(request)
if (token) {
await pool.query('delete from sessions where token_hash = $1', [tokenHash(token)])
}
sendJson(response, 200, { ok: true }, { 'Set-Cookie': sessionCookie('', request, 0) })
return true
}
sendJson(response, 404, { error: 'not_found' })
return true
}
async function requireUser(request, response) {
const session = await currentSession(request)
if (session) return session
if (process.env.TRUST_AUTH_HEADERS !== '1') {
sendJson(response, 401, { error: 'auth_not_configured' })
return null
}
const authSubject = request.headers['x-auth-subject']
if (!authSubject || Array.isArray(authSubject)) {
sendJson(response, 401, { error: 'missing_auth_subject' })
return null
}
const authIssuerHeader = request.headers['x-auth-issuer']
const displayNameHeader = request.headers['x-display-name']
const authIssuer = Array.isArray(authIssuerHeader)
? authIssuerHeader[0]
: authIssuerHeader || process.env.AUTH_ISSUER || 'https://auth.phenomrom.com'
const displayName = Array.isArray(displayNameHeader)
? displayNameHeader[0]
: displayNameHeader || 'Healer'
const result = await pool.query(
`
insert into app_users (auth_issuer, auth_subject, display_name, updated_at)
values ($1, $2, $3, now())
on conflict (auth_issuer, auth_subject)
do update set display_name = excluded.display_name, updated_at = now()
returning id, auth_issuer, auth_subject, display_name, created_at, updated_at
`,
[authIssuer, authSubject, displayName],
)
return result.rows[0]
}
function normalizeUsername(value) {
const username = String(value ?? '').trim()
if (!/^[A-Za-z0-9_]{3,20}$/.test(username)) {
throw new Error('Username must be 3-20 letters, numbers, or underscores.')
}
return username
}
function normalizeDisplayName(value, fallback) {
const name = String(value ?? fallback).trim()
if (!/^[A-Za-z][A-Za-z0-9 '-]{1,19}$/.test(name)) {
throw new Error('Character name must be 2-20 characters and start with a letter.')
}
return name
}
function validatePassword(value) {
const password = String(value ?? '')
if (password.length < 10 || password.length > 128) {
throw new Error('Password must be 10-128 characters.')
}
return password
}
function passwordDigest(password, salt) {
return scryptSync(password, salt, 64).toString('hex')
}
function verifyPassword(password, user) {
const actual = Buffer.from(passwordDigest(password, user.password_salt), 'hex')
const expected = Buffer.from(user.password_hash, 'hex')
return actual.length === expected.length && timingSafeEqual(actual, expected)
}
function tokenHash(token) {
return createHash('sha256').update(token).digest('hex')
}
function parseCookies(request) {
return Object.fromEntries(
String(request.headers.cookie ?? '')
.split(';')
.map((part) => part.trim())
.filter(Boolean)
.map((part) => {
const separator = part.indexOf('=')
return separator < 0
? [part, '']
: [part.slice(0, separator), decodeURIComponent(part.slice(separator + 1))]
}),
)
}
function bearerToken(request) {
const authorization = request.headers.authorization
if (typeof authorization !== 'string') return ''
const match = authorization.match(/^Bearer\s+(.+)$/i)
return match ? match[1].trim() : ''
}
function requestSessionToken(request) {
return bearerToken(request) || parseCookies(request)[sessionCookieName] || ''
}
function sessionCookie(token, request, maxAge = sessionLifetimeSeconds) {
const secure = request.headers['x-forwarded-proto'] === 'https'
|| Boolean(request.socket.encrypted)
|| process.env.COOKIE_SECURE === '1'
return [
`${sessionCookieName}=${encodeURIComponent(token)}`,
'HttpOnly',
'Path=/',
'SameSite=Lax',
`Max-Age=${maxAge}`,
secure ? 'Secure' : '',
].filter(Boolean).join('; ')
}
function requestIp(request) {
if (process.env.TRUST_PROXY === '1') {
const forwarded = request.headers['x-forwarded-for']
if (typeof forwarded === 'string') return forwarded.split(',')[0].trim()
}
return request.socket.remoteAddress ?? 'unknown'
}
async function createSession(userId, ip) {
const token = randomBytes(32).toString('base64url')
await pool.query(
`
insert into sessions (user_id, token_hash, expires_at, created_ip)
values ($1, $2, now() + interval '30 days', $3)
`,
[userId, tokenHash(token), ip],
)
return token
}
async function currentSession(request) {
const token = requestSessionToken(request)
if (!token) return null
await pool.query('delete from sessions where expires_at <= now()')
const result = await pool.query(
`
select app_users.id, app_users.username, app_users.display_name, app_users.auth_issuer, app_users.auth_subject
from sessions
join app_users on app_users.id = sessions.user_id
where sessions.token_hash = $1
and sessions.expires_at > now()
`,
[tokenHash(token)],
)
return result.rows[0] ?? null
}
function accountPayload(user) {
return {
id: user.id,
username: user.username ?? user.auth_subject,
displayName: user.display_name,
}
}
async function registerAccount(request, payload) {
const username = normalizeUsername(payload?.username)
const normalizedSubject = username.toLowerCase()
const password = validatePassword(payload?.password)
const displayName = normalizeDisplayName(payload?.characterName, username)
const existing = await pool.query(
'select id from app_users where username is not null and lower(username) = lower($1)',
[username],
)
if (existing.rows[0]) throw new Error('That username is already taken.')
const salt = randomBytes(16).toString('hex')
const result = await pool.query(
`
insert into app_users (auth_issuer, auth_subject, username, password_hash, password_salt, display_name)
values ('local', $1, $2, $3, $4, $5)
returning id, username, display_name, auth_issuer, auth_subject
`,
[normalizedSubject, username, passwordDigest(password, salt), salt, displayName],
)
const user = result.rows[0]
const token = await createSession(user.id, requestIp(request))
return { account: accountPayload(user), profile: null, token }
}
async function loginAccount(request, payload) {
const username = normalizeUsername(payload?.username)
const password = String(payload?.password ?? '')
const result = await pool.query(
`
select id, username, password_hash, password_salt, display_name, auth_issuer, auth_subject
from app_users
where username is not null
and lower(username) = lower($1)
`,
[username],
)
const user = result.rows[0]
if (!user || !user.password_hash || !user.password_salt || !verifyPassword(password, user)) {
throw new Error('Invalid username or password.')
}
const token = await createSession(user.id, requestIp(request))
return { account: accountPayload(user), profile: null, token }
}
async function readJson(request, maxSize = 512 * 1024) {
const chunks = []
let size = 0
for await (const chunk of request) chunks.push(chunk)
for (const chunk of chunks) size += chunk.length
if (size > maxSize) throw new Error('Request body is too large.')
if (chunks.length === 0) return null
return JSON.parse(Buffer.concat(chunks).toString('utf8'))
}
function sendJson(response, status, payload, headers = {}) {
response.writeHead(status, { 'Content-Type': 'application/json; charset=utf-8', ...headers })
response.end(JSON.stringify(payload))
}
async function serveStatic(response, pathname) {
const safePath = normalize(pathname).replace(/^(\.\.[/\\])+/, '')
const candidatePath = join(distDir, safePath === '/' ? 'index.html' : safePath)
const filePath = candidatePath.startsWith(distDir) && existsSync(candidatePath) && statSync(candidatePath).isFile()
? candidatePath
: join(distDir, 'index.html')
const contentType = mimeTypes[extname(filePath)] ?? 'application/octet-stream'
response.writeHead(200, { 'Content-Type': contentType })
if (filePath.endsWith('index.html')) {
response.end(await readFile(filePath))
return
}
createReadStream(filePath).pipe(response)
}