Private servers with password and invite links (Experimental)

2026-03-18 20:42:40 +01:00
parent f8fd78d21a
commit eb987ac672
54 changed files with 2910 additions and 286 deletions
--- a/server/src/routes/index.ts
+++ b/server/src/routes/index.ts
@@ -5,6 +5,7 @@ import proxyRouter from './proxy';
 import usersRouter from './users';
 import serversRouter from './servers';
 import joinRequestsRouter from './join-requests';
+import { invitesApiRouter, invitePageRouter } from './invites';

 export function registerRoutes(app: Express): void {
  app.use('/api', healthRouter);
@@ -12,5 +13,7 @@ export function registerRoutes(app: Express): void {
  app.use('/api', proxyRouter);
  app.use('/api/users', usersRouter);
  app.use('/api/servers', serversRouter);
+  app.use('/api/invites', invitesApiRouter);
  app.use('/api/requests', joinRequestsRouter);
+  app.use('/invite', invitePageRouter);
 }
--- a/server/src/routes/invite-utils.ts
+++ b/server/src/routes/invite-utils.ts
@@ -0,0 +1,47 @@
+import { Request } from 'express';
+
+function buildOrigin(protocol: string, host: string): string {
+  return `${protocol}://${host}`.replace(/\/+$/, '');
+}
+
+export function getRequestOrigin(request: Request): string {
+  const forwardedProtoHeader = request.get('x-forwarded-proto');
+  const forwardedHostHeader = request.get('x-forwarded-host');
+  const protocol = forwardedProtoHeader?.split(',')[0]?.trim() || request.protocol;
+  const host = forwardedHostHeader?.split(',')[0]?.trim() || request.get('host') || 'localhost';
+
+  return buildOrigin(protocol, host);
+}
+
+export function deriveWebAppOrigin(signalOrigin: string): string {
+  const url = new URL(signalOrigin);
+  const host = url.host;
+
+  if (host === 'signal.toju.app') {
+    return 'https://web.toju.app';
+  }
+
+  if (host.startsWith('signal.')) {
+    return buildOrigin(url.protocol.replace(':', ''), host.replace(/^signal\./, 'web.'));
+  }
+
+  if (['localhost:3001', '127.0.0.1:3001'].includes(host)) {
+    return buildOrigin(url.protocol.replace(':', ''), host.replace(/:3001$/, ':4200'));
+  }
+
+  return 'https://web.toju.app';
+}
+
+export function buildInviteUrl(signalOrigin: string, inviteId: string): string {
+  return `${signalOrigin.replace(/\/+$/, '')}/invite/${encodeURIComponent(inviteId)}`;
+}
+
+export function buildBrowserInviteUrl(signalOrigin: string, inviteId: string): string {
+  const browserOrigin = deriveWebAppOrigin(signalOrigin);
+
+  return `${browserOrigin.replace(/\/+$/, '')}/invite/${encodeURIComponent(inviteId)}?server=${encodeURIComponent(signalOrigin)}`;
+}
+
+export function buildAppInviteUrl(signalOrigin: string, inviteId: string): string {
+  return `toju://invite/${encodeURIComponent(inviteId)}?server=${encodeURIComponent(signalOrigin)}`;
+}
--- a/server/src/routes/invites.ts
+++ b/server/src/routes/invites.ts
@@ -0,0 +1,331 @@
+import { Router } from 'express';
+import { getUserById } from '../cqrs';
+import { rowToServer } from '../cqrs/mappers';
+import { ServerPayload } from '../cqrs/types';
+import { getActiveServerInvite } from '../services/server-access.service';
+import {
+  buildAppInviteUrl,
+  buildBrowserInviteUrl,
+  buildInviteUrl,
+  getRequestOrigin
+} from './invite-utils';
+
+export const invitesApiRouter = Router();
+export const invitePageRouter = Router();
+
+async function enrichServer(server: ServerPayload, sourceUrl: string) {
+  const owner = await getUserById(server.ownerId);
+  const { passwordHash, ...publicServer } = server;
+
+  return {
+    ...publicServer,
+    hasPassword: server.hasPassword ?? !!passwordHash,
+    ownerName: owner?.displayName,
+    sourceUrl,
+    userCount: server.currentUsers
+  };
+}
+
+function renderInvitePage(options: {
+  appUrl?: string;
+  browserUrl?: string;
+  error?: string;
+  expiresAt?: number;
+  inviteUrl?: string;
+  isExpired: boolean;
+  ownerName?: string;
+  serverDescription?: string;
+  serverName: string;
+}) {
+  const expiryLabel = options.expiresAt
+    ? new Date(options.expiresAt).toLocaleString('en-US', {
+      dateStyle: 'medium',
+      timeStyle: 'short'
+    })
+    : null;
+  const statusLabel = options.isExpired ? 'Expired' : 'Active';
+  const statusColor = options.isExpired ? '#f87171' : '#4ade80';
+  const buttonOpacity = options.isExpired ? 'opacity:0.5;pointer-events:none;' : '';
+  const errorBlock = options.error
+    ? `<div class="notice notice-error">${options.error}</div>`
+    : '';
+  const description = options.serverDescription
+    ? `<p class="description">${options.serverDescription}</p>`
+    : '<p class="description">You have been invited to join a Toju server.</p>';
+
+  return `<!DOCTYPE html>
+<html lang="en">
+  <head>
+    <meta charset="utf-8" />
+    <meta name="viewport" content="width=device-width, initial-scale=1" />
+    <title>Invite to ${options.serverName}</title>
+    <style>
+      :root {
+        color-scheme: dark;
+        --bg: #050816;
+        --bg-soft: rgba(11, 18, 42, 0.78);
+        --card: rgba(15, 23, 42, 0.92);
+        --border: rgba(148, 163, 184, 0.18);
+        --text: #f8fafc;
+        --muted: #cbd5e1;
+        --primary: #8b5cf6;
+        --primary-soft: rgba(139, 92, 246, 0.16);
+        --secondary: rgba(148, 163, 184, 0.16);
+      }
+      * { box-sizing: border-box; }
+      body {
+        margin: 0;
+        min-height: 100vh;
+        font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
+        color: var(--text);
+        background:
+          radial-gradient(circle at top left, rgba(59, 130, 246, 0.28), transparent 32%),
+          radial-gradient(circle at top right, rgba(139, 92, 246, 0.24), transparent 30%),
+          linear-gradient(180deg, #050816 0%, #0b1120 100%);
+        display: flex;
+        align-items: center;
+        justify-content: center;
+        padding: 32px 20px;
+      }
+      .shell {
+        width: min(100%, 760px);
+        border: 1px solid var(--border);
+        border-radius: 28px;
+        background: var(--bg-soft);
+        backdrop-filter: blur(22px);
+        box-shadow: 0 30px 90px rgba(15, 23, 42, 0.5);
+        overflow: hidden;
+      }
+      .hero {
+        padding: 36px 36px 28px;
+        border-bottom: 1px solid var(--border);
+        background: linear-gradient(180deg, rgba(15, 23, 42, 0.8), rgba(15, 23, 42, 0.55));
+      }
+      .eyebrow {
+        display: inline-flex;
+        align-items: center;
+        gap: 10px;
+        padding: 8px 14px;
+        border-radius: 999px;
+        font-size: 12px;
+        font-weight: 700;
+        letter-spacing: 0.18em;
+        text-transform: uppercase;
+        color: var(--muted);
+        background: var(--secondary);
+      }
+      .status-dot {
+        width: 8px;
+        height: 8px;
+        border-radius: 999px;
+        background: ${statusColor};
+        box-shadow: 0 0 0 6px color-mix(in srgb, ${statusColor} 18%, transparent);
+      }
+      h1 {
+        margin: 18px 0 10px;
+        font-size: clamp(2rem, 3vw, 3.25rem);
+        line-height: 1.05;
+      }
+      .description {
+        margin: 0;
+        color: var(--muted);
+        font-size: 1rem;
+        line-height: 1.6;
+        max-width: 44rem;
+      }
+      .content {
+        display: grid;
+        gap: 20px;
+        padding: 28px 36px 36px;
+      }
+      .meta-grid {
+        display: grid;
+        gap: 16px;
+        grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
+      }
+      .meta-card {
+        border: 1px solid var(--border);
+        border-radius: 18px;
+        background: var(--card);
+        padding: 18px;
+      }
+      .meta-label {
+        font-size: 11px;
+        letter-spacing: 0.18em;
+        text-transform: uppercase;
+        color: var(--muted);
+        opacity: 0.8;
+      }
+      .meta-value {
+        margin-top: 10px;
+        font-size: 1rem;
+        font-weight: 600;
+        color: var(--text);
+      }
+      .actions {
+        display: grid;
+        gap: 14px;
+        grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
+      }
+      .button {
+        display: inline-flex;
+        align-items: center;
+        justify-content: center;
+        gap: 10px;
+        min-height: 56px;
+        padding: 0 18px;
+        border-radius: 16px;
+        border: 1px solid transparent;
+        color: var(--text);
+        text-decoration: none;
+        font-weight: 700;
+        transition: transform 0.2s ease, box-shadow 0.2s ease, border-color 0.2s ease;
+      }
+      .button:hover {
+        transform: translateY(-1px);
+      }
+      .button-primary {
+        background: linear-gradient(135deg, #8b5cf6, #6366f1);
+        box-shadow: 0 18px 36px rgba(99, 102, 241, 0.28);
+      }
+      .button-secondary {
+        border-color: var(--border);
+        background: rgba(15, 23, 42, 0.8);
+      }
+      .notice {
+        border-radius: 16px;
+        padding: 14px 16px;
+        border: 1px solid var(--border);
+        background: rgba(15, 23, 42, 0.72);
+        color: var(--muted);
+        line-height: 1.6;
+      }
+      .notice-error {
+        border-color: rgba(248, 113, 113, 0.32);
+        background: rgba(127, 29, 29, 0.18);
+        color: #fecaca;
+      }
+      .footer {
+        display: flex;
+        flex-wrap: wrap;
+        gap: 12px 18px;
+        align-items: center;
+        justify-content: space-between;
+        color: var(--muted);
+        font-size: 0.95rem;
+      }
+      .footer a {
+        color: #c4b5fd;
+        text-decoration: none;
+      }
+      .footer a:hover {
+        text-decoration: underline;
+      }
+      code {
+        font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
+        color: #ddd6fe;
+      }
+      @media (max-width: 640px) {
+        .hero, .content { padding-inline: 22px; }
+      }
+    </style>
+  </head>
+  <body>
+    <main class="shell">
+      <section class="hero">
+        <div class="eyebrow"><span class="status-dot"></span>${statusLabel} invite</div>
+        <h1>Join ${options.serverName}</h1>
+        ${description}
+      </section>
+
+      <section class="content">
+        ${errorBlock}
+        <div class="meta-grid">
+          <article class="meta-card">
+            <div class="meta-label">Server</div>
+            <div class="meta-value">${options.serverName}</div>
+          </article>
+          <article class="meta-card">
+            <div class="meta-label">Owner</div>
+            <div class="meta-value">${options.ownerName || 'Unknown'}</div>
+          </article>
+          <article class="meta-card">
+            <div class="meta-label">Expires</div>
+            <div class="meta-value">${expiryLabel || 'Expired'}</div>
+          </article>
+        </div>
+
+        <div class="actions" style="${buttonOpacity}">
+          <a class="button button-primary" href="${options.browserUrl || '#'}">Join in browser</a>
+          <a class="button button-secondary" href="${options.appUrl || '#'}">Open with Toju</a>
+        </div>
+
+        <div class="notice">
+          Invite links bypass private and password restrictions, but banned users still cannot join.
+          If Toju is not installed yet, use the desktop button after installing from <a href="https://toju.app/downloads">toju.app/downloads</a>.
+        </div>
+
+        <div class="footer">
+          <span>Share link: <code>${options.inviteUrl || 'Unavailable'}</code></span>
+          <a href="https://toju.app/downloads">Download Toju</a>
+        </div>
+      </section>
+    </main>
+  </body>
+</html>`;
+}
+
+invitesApiRouter.get('/:id', async (req, res) => {
+  const signalOrigin = getRequestOrigin(req);
+  const bundle = await getActiveServerInvite(req.params['id']);
+
+  if (!bundle) {
+    return res.status(404).json({ error: 'Invite link has expired or is invalid', errorCode: 'INVITE_EXPIRED' });
+  }
+
+  const server = rowToServer(bundle.server);
+
+  res.json({
+    id: bundle.invite.id,
+    serverId: bundle.invite.serverId,
+    createdAt: bundle.invite.createdAt,
+    expiresAt: bundle.invite.expiresAt,
+    inviteUrl: buildInviteUrl(signalOrigin, bundle.invite.id),
+    browserUrl: buildBrowserInviteUrl(signalOrigin, bundle.invite.id),
+    appUrl: buildAppInviteUrl(signalOrigin, bundle.invite.id),
+    sourceUrl: signalOrigin,
+    createdBy: bundle.invite.createdBy,
+    createdByDisplayName: bundle.invite.createdByDisplayName ?? undefined,
+    isExpired: bundle.invite.expiresAt <= Date.now(),
+    server: await enrichServer(server, signalOrigin)
+  });
+});
+
+invitePageRouter.get('/:id', async (req, res) => {
+  const signalOrigin = getRequestOrigin(req);
+  const bundle = await getActiveServerInvite(req.params['id']);
+
+  if (!bundle) {
+    res.status(404).send(renderInvitePage({
+      error: 'This invite has expired or is no longer available.',
+      isExpired: true,
+      serverName: 'Toju server'
+    }));
+
+    return;
+  }
+
+  const server = rowToServer(bundle.server);
+  const owner = await getUserById(server.ownerId);
+
+  res.send(renderInvitePage({
+    serverName: server.name,
+    serverDescription: server.description,
+    ownerName: owner?.displayName,
+    expiresAt: bundle.invite.expiresAt,
+    inviteUrl: buildInviteUrl(signalOrigin, bundle.invite.id),
+    browserUrl: buildBrowserInviteUrl(signalOrigin, bundle.invite.id),
+    appUrl: buildAppInviteUrl(signalOrigin, bundle.invite.id),
+    isExpired: bundle.invite.expiresAt <= Date.now()
+  }));
+});
--- a/server/src/routes/servers.ts
+++ b/server/src/routes/servers.ts
@@ -1,29 +1,89 @@
-import { Router } from 'express';
+import { Response, Router } from 'express';
 import { v4 as uuidv4 } from 'uuid';
-import { ServerPayload, JoinRequestPayload } from '../cqrs/types';
+import { ServerPayload } from '../cqrs/types';
 import {
  getAllPublicServers,
  getServerById,
  getUserById,
  upsertServer,
  deleteServer,
-  createJoinRequest,
  getPendingRequestsForServer
 } from '../cqrs';
-import { notifyServerOwner } from '../websocket/broadcast';
+import {
+  banServerUser,
+  buildSignalingUrl,
+  createServerInvite,
+  joinServerWithAccess,
+  passwordHashForInput,
+  ServerAccessError,
+  kickServerUser,
+  ensureServerMembership,
+  unbanServerUser
+} from '../services/server-access.service';
+import {
+  buildAppInviteUrl,
+  buildBrowserInviteUrl,
+  buildInviteUrl,
+  getRequestOrigin
+} from './invite-utils';

 const router = Router();

-async function enrichServer(server: ServerPayload) {
+function normalizeRole(role: unknown): string | null {
+  return typeof role === 'string' ? role.trim().toLowerCase() : null;
+}
+
+function isAllowedRole(role: string | null, allowedRoles: string[]): boolean {
+  return !!role && allowedRoles.includes(role);
+}
+
+async function enrichServer(server: ServerPayload, sourceUrl?: string) {
  const owner = await getUserById(server.ownerId);
+  const { passwordHash, ...publicServer } = server;

  return {
-    ...server,
+    ...publicServer,
+    hasPassword: server.hasPassword ?? !!passwordHash,
    ownerName: owner?.displayName,
+    sourceUrl,
    userCount: server.currentUsers
  };
 }

+function sendAccessError(error: unknown, res: Response) {
+  if (error instanceof ServerAccessError) {
+    res.status(error.status).json({ error: error.message, errorCode: error.code });
+    return;
+  }
+
+  console.error('Unhandled server access error:', error);
+  res.status(500).json({ error: 'Internal server error', errorCode: 'INTERNAL_ERROR' });
+}
+
+async function buildInviteResponse(invite: {
+  id: string;
+  createdAt: number;
+  expiresAt: number;
+  createdBy: string;
+  createdByDisplayName: string | null;
+  serverId: string;
+}, server: ServerPayload, signalOrigin: string) {
+  return {
+    id: invite.id,
+    serverId: invite.serverId,
+    createdAt: invite.createdAt,
+    expiresAt: invite.expiresAt,
+    inviteUrl: buildInviteUrl(signalOrigin, invite.id),
+    browserUrl: buildBrowserInviteUrl(signalOrigin, invite.id),
+    appUrl: buildAppInviteUrl(signalOrigin, invite.id),
+    sourceUrl: signalOrigin,
+    createdBy: invite.createdBy,
+    createdByDisplayName: invite.createdByDisplayName ?? undefined,
+    isExpired: invite.expiresAt <= Date.now(),
+    server: await enrichServer(server, signalOrigin)
+  };
+}
+
 router.get('/', async (req, res) => {
  const { q, tags, limit = 20, offset = 0 } = req.query;

@@ -54,17 +114,30 @@ router.get('/', async (req, res) => {
 });

 router.post('/', async (req, res) => {
-  const { id: clientId, name, description, ownerId, ownerPublicKey, isPrivate, maxUsers, tags } = req.body;
+  const {
+    id: clientId,
+    name,
+    description,
+    ownerId,
+    ownerPublicKey,
+    isPrivate,
+    maxUsers,
+    password,
+    tags
+  } = req.body;

  if (!name || !ownerId || !ownerPublicKey)
    return res.status(400).json({ error: 'Missing required fields' });

+  const passwordHash = passwordHashForInput(password);
  const server: ServerPayload = {
    id: clientId || uuidv4(),
    name,
    description,
    ownerId,
    ownerPublicKey,
+    hasPassword: !!passwordHash,
+    passwordHash,
    isPrivate: isPrivate ?? false,
    maxUsers: maxUsers ?? 0,
    currentUsers: 0,
@@ -74,25 +147,198 @@ router.post('/', async (req, res) => {
  };

  await upsertServer(server);
-  res.status(201).json(server);
+  await ensureServerMembership(server.id, ownerId);
+
+  res.status(201).json(await enrichServer(server, getRequestOrigin(req)));
 });

 router.put('/:id', async (req, res) => {
  const { id } = req.params;
-  const { currentOwnerId, ...updates } = req.body;
+  const {
+    currentOwnerId,
+    actingRole,
+    password,
+    hasPassword: _ignoredHasPassword,
+    passwordHash: _ignoredPasswordHash,
+    ...updates
+  } = req.body;
  const existing = await getServerById(id);
  const authenticatedOwnerId = currentOwnerId ?? req.body.ownerId;
+  const normalizedRole = normalizeRole(actingRole);

  if (!existing)
    return res.status(404).json({ error: 'Server not found' });

-  if (existing.ownerId !== authenticatedOwnerId)
+  if (
+    existing.ownerId !== authenticatedOwnerId &&
+    !isAllowedRole(normalizedRole, ['host', 'admin'])
+  ) {
    return res.status(403).json({ error: 'Not authorized' });
+  }

-  const server: ServerPayload = { ...existing, ...updates, lastSeen: Date.now() };
+  const hasPasswordUpdate = Object.prototype.hasOwnProperty.call(req.body, 'password');
+  const nextPasswordHash = hasPasswordUpdate ? passwordHashForInput(password) : (existing.passwordHash ?? null);
+  const server: ServerPayload = {
+    ...existing,
+    ...updates,
+    hasPassword: !!nextPasswordHash,
+    passwordHash: nextPasswordHash,
+    lastSeen: Date.now()
+  };

  await upsertServer(server);
-  res.json(server);
+  res.json(await enrichServer(server, getRequestOrigin(req)));
+});
+
+router.post('/:id/join', async (req, res) => {
+  const { id: serverId } = req.params;
+  const { userId, password, inviteId } = req.body;
+
+  if (!userId) {
+    return res.status(400).json({ error: 'Missing userId', errorCode: 'MISSING_USER' });
+  }
+
+  try {
+    const result = await joinServerWithAccess({
+      serverId,
+      userId: String(userId),
+      password: typeof password === 'string' ? password : undefined,
+      inviteId: typeof inviteId === 'string' ? inviteId : undefined
+    });
+    const origin = getRequestOrigin(req);
+
+    res.json({
+      success: true,
+      signalingUrl: buildSignalingUrl(origin),
+      joinedBefore: result.joinedBefore,
+      via: result.via,
+      server: await enrichServer(result.server, origin)
+    });
+  } catch (error) {
+    sendAccessError(error, res);
+  }
+});
+
+router.post('/:id/invites', async (req, res) => {
+  const { id: serverId } = req.params;
+  const { requesterUserId, requesterDisplayName } = req.body;
+
+  if (!requesterUserId) {
+    return res.status(400).json({ error: 'Missing requesterUserId', errorCode: 'MISSING_USER' });
+  }
+
+  const server = await getServerById(serverId);
+
+  if (!server) {
+    return res.status(404).json({ error: 'Server not found', errorCode: 'SERVER_NOT_FOUND' });
+  }
+
+  try {
+    const invite = await createServerInvite(
+      serverId,
+      String(requesterUserId),
+      typeof requesterDisplayName === 'string' ? requesterDisplayName : undefined
+    );
+
+    res.status(201).json(await buildInviteResponse(invite, server, getRequestOrigin(req)));
+  } catch (error) {
+    sendAccessError(error, res);
+  }
+});
+
+router.post('/:id/moderation/kick', async (req, res) => {
+  const { id: serverId } = req.params;
+  const { actorUserId, actorRole, targetUserId } = req.body;
+  const server = await getServerById(serverId);
+
+  if (!server) {
+    return res.status(404).json({ error: 'Server not found', errorCode: 'SERVER_NOT_FOUND' });
+  }
+
+  if (!targetUserId) {
+    return res.status(400).json({ error: 'Missing targetUserId', errorCode: 'MISSING_TARGET' });
+  }
+
+  if (
+    server.ownerId !== actorUserId &&
+    !isAllowedRole(normalizeRole(actorRole), [
+      'host',
+      'admin',
+      'moderator'
+    ])
+  ) {
+    return res.status(403).json({ error: 'Not authorized', errorCode: 'NOT_AUTHORIZED' });
+  }
+
+  await kickServerUser(serverId, String(targetUserId));
+
+  res.json({ ok: true });
+});
+
+router.post('/:id/moderation/ban', async (req, res) => {
+  const { id: serverId } = req.params;
+  const { actorUserId, actorRole, targetUserId, banId, displayName, reason, expiresAt } = req.body;
+  const server = await getServerById(serverId);
+
+  if (!server) {
+    return res.status(404).json({ error: 'Server not found', errorCode: 'SERVER_NOT_FOUND' });
+  }
+
+  if (!targetUserId) {
+    return res.status(400).json({ error: 'Missing targetUserId', errorCode: 'MISSING_TARGET' });
+  }
+
+  if (
+    server.ownerId !== actorUserId &&
+    !isAllowedRole(normalizeRole(actorRole), [
+      'host',
+      'admin',
+      'moderator'
+    ])
+  ) {
+    return res.status(403).json({ error: 'Not authorized', errorCode: 'NOT_AUTHORIZED' });
+  }
+
+  await banServerUser({
+    serverId,
+    userId: String(targetUserId),
+    banId: typeof banId === 'string' ? banId : undefined,
+    bannedBy: String(actorUserId || ''),
+    displayName: typeof displayName === 'string' ? displayName : undefined,
+    reason: typeof reason === 'string' ? reason : undefined,
+    expiresAt: typeof expiresAt === 'number' ? expiresAt : undefined
+  });
+
+  res.json({ ok: true });
+});
+
+router.post('/:id/moderation/unban', async (req, res) => {
+  const { id: serverId } = req.params;
+  const { actorUserId, actorRole, banId, targetUserId } = req.body;
+  const server = await getServerById(serverId);
+
+  if (!server) {
+    return res.status(404).json({ error: 'Server not found', errorCode: 'SERVER_NOT_FOUND' });
+  }
+
+  if (
+    server.ownerId !== actorUserId &&
+    !isAllowedRole(normalizeRole(actorRole), [
+      'host',
+      'admin',
+      'moderator'
+    ])
+  ) {
+    return res.status(403).json({ error: 'Not authorized', errorCode: 'NOT_AUTHORIZED' });
+  }
+
+  await unbanServerUser({
+    serverId,
+    banId: typeof banId === 'string' ? banId : undefined,
+    userId: typeof targetUserId === 'string' ? targetUserId : undefined
+  });
+
+  res.json({ ok: true });
 });

 router.post('/:id/heartbeat', async (req, res) => {
@@ -128,32 +374,6 @@ router.delete('/:id', async (req, res) => {
  res.json({ ok: true });
 });

-router.post('/:id/join', async (req, res) => {
-  const { id: serverId } = req.params;
-  const { userId, userPublicKey, displayName } = req.body;
-  const server = await getServerById(serverId);
-
-  if (!server)
-    return res.status(404).json({ error: 'Server not found' });
-
-  const request: JoinRequestPayload = {
-    id: uuidv4(),
-    serverId,
-    userId,
-    userPublicKey,
-    displayName,
-    status: server.isPrivate ? 'pending' : 'approved',
-    createdAt: Date.now()
-  };
-
-  await createJoinRequest(request);
-
-  if (server.isPrivate)
-    notifyServerOwner(server.ownerId, { type: 'join_request', request });
-
-  res.status(201).json(request);
-});
-
 router.get('/:id/requests', async (req, res) => {
  const { id: serverId } = req.params;
  const { ownerId } = req.query;
@@ -170,4 +390,15 @@ router.get('/:id/requests', async (req, res) => {
  res.json({ requests });
 });

+router.get('/:id', async (req, res) => {
+  const { id } = req.params;
+  const server = await getServerById(id);
+
+  if (!server) {
+    return res.status(404).json({ error: 'Server not found', errorCode: 'SERVER_NOT_FOUND' });
+  }
+
+  res.json(await enrichServer(server, getRequestOrigin(req)));
+});
+
 export default router;