feat: production hardening — robots, allowedOrigins, container non-root, rate limits, CLI bootstrap

robots.ts + metadata.robots blocks indexing.
serverActions.allowedOrigins gates cross-origin Server Action posts.
Bot + web Dockerfiles add a non-root 'app' user (uid 1000) with
chmod 700 on /data/sessions.
sendTestAction grows a per-group rate limit (3/60s).
resumeReminderRunAction + cancelReminderRunAction get a per-IP
rate limit (30/10s).
.env.example documents every required key.
packages/db/src/scripts/{set-password,create-user}.ts + thin shell
wrappers in scripts/ — first admin sets their password via
./scripts/set-password.sh admin before signing in.

apps/web/.env.example

@@ -0,0 +1,27 @@
+# Required
+DATABASE_URL=postgres://user:pass@host:5432/dbname
+
+# Auth — sign cookies. 64+ random chars. Generate via scripts/gen_auth_secret.sh.
+AUTH_SECRET=replace-me
+
+# Bump to invalidate all live sessions instantly. Leave at 1 normally.
+OPERATOR_TOKEN_VERSION=1
+
+# File-storage paths inside the bot container
+DATA_DIR=/data
+SESSIONS_DIR=/data/sessions
+MEDIA_DIR=/data/media
+
+# Bot fan-out tuning (see apps/bot/src/env.ts)
+BOT_HEALTH_PORT=8081
+BOT_LOG_LEVEL=info
+BOT_FIRE_CONCURRENCY=8
+BOT_GROUP_CONCURRENCY=3
+BOT_MAX_SEND_PER_MINUTE=40
+
+# Web
+WEB_PORT=9000
+
+# Seed (runs once via scripts/db.sh seed)
+SEED_OPERATOR_USERNAME=admin
+SEED_OPERATOR_NAME=Operator

apps/web/next.config.ts

@@ -21,6 +21,7 @@ const nextConfig: NextConfig = {
   experimental: {
     typedRoutes: true,
     serverActions: {
+      allowedOrigins: ["wabot.04080616.xyz", "localhost:9000"],
       // Default Server Action body limit is 1 MB — way under WhatsApp's
       // 100 MB document cap. Lifted to 100 MB so document uploads reach
       // the action; the per-kind WhatsApp validator

apps/web/src/actions/groups.ts

@@ -33,6 +33,12 @@ export async function sendTestAction(_prev: unknown, formData: FormData): Promis
     return { ok: false, error: parsed.error.issues[0]?.message ?? "Invalid input" };
   }
 
+  const groupId = parsed.data.groupId;
+  const groupRl = await checkRateLimit(`send-test:${groupId}`, { max: 3, windowSec: 60 });
+  if (groupRl.limited) {
+    return { ok: false, error: "Too many tests for this group. Try again later." };
+  }
+
   const op = await getSeededOperator();
   const group = await db.query.whatsappGroups.findFirst({
     where: (g, { eq }) => eq(g.id, parsed.data.groupId),

apps/web/src/actions/reminders.ts

@@ -563,6 +563,12 @@ export type ResumeReminderRunResult = { ok: true } | { ok: false; error: string
 export async function resumeReminderRunAction(input: {
   runId: string;
 }): Promise<ResumeReminderRunResult> {
+  const ip =
+    (await headers()).get("x-forwarded-for")?.split(",")[0]?.trim() ?? "unknown";
+  const rl = await checkRateLimit(`reminder-run:${ip}`, { max: 30, windowSec: 10 });
+  if (rl.limited) {
+    return { ok: false, error: "Too many requests. Try again later." };
+  }
   const op = await getSeededOperator();
   const parsed = runIdSchema.safeParse(input);
   if (!parsed.success) {
@@ -613,6 +619,12 @@ export type CancelReminderRunResult = { ok: true } | { ok: false; error: string
 export async function cancelReminderRunAction(input: {
   runId: string;
 }): Promise<CancelReminderRunResult> {
+  const ip =
+    (await headers()).get("x-forwarded-for")?.split(",")[0]?.trim() ?? "unknown";
+  const rl = await checkRateLimit(`reminder-run:${ip}`, { max: 30, windowSec: 10 });
+  if (rl.limited) {
+    return { ok: false, error: "Too many requests. Try again later." };
+  }
   const op = await getSeededOperator();
   const parsed = runIdSchema.safeParse(input);
   if (!parsed.success) {

apps/web/src/app/layout.tsx

@@ -10,6 +10,7 @@ export const metadata: Metadata = {
   title: "cm WhatsApp Bot",
   description: "Self-hosted WhatsApp reminder bot",
   applicationName: "cm WhatsApp Bot",
+  robots: { index: false, follow: false },
   // PWA wiring: the manifest comes from the dynamic route at
   // src/app/manifest.webmanifest/route.ts, the apple-touch-icon is
   // emitted from public/, and `appleWebApp.capable` lets iOS treat the

apps/web/src/app/robots.ts

@@ -0,0 +1,5 @@
+import type { MetadataRoute } from "next";
+
+export default function robots(): MetadataRoute.Robots {
+  return { rules: [{ userAgent: "*", disallow: "/" }] };
+}

docker/bot.Dockerfile

@@ -26,5 +26,11 @@ COPY --from=build /app/node_modules /app/node_modules
 COPY --from=build /app/apps/bot /app/apps/bot
 COPY --from=build /app/packages/db /app/packages/db
 COPY --from=build /app/packages/shared /app/packages/shared
+RUN addgroup -g 1000 app && \
+    adduser -D -u 1000 -G app -s /sbin/nologin app && \
+    mkdir -p /data/sessions /data/media /app && \
+    chown -R app:app /app /data && \
+    chmod 700 /data/sessions
+USER app
 EXPOSE 8081
 CMD ["node", "apps/bot/dist/index.js"]

docker/web.Dockerfile

@@ -29,5 +29,9 @@ ENV HOSTNAME=0.0.0.0
 COPY --from=build /app/apps/web/.next/standalone ./
 COPY --from=build /app/apps/web/.next/static ./apps/web/.next/static
 COPY --from=build /app/apps/web/public ./apps/web/public
+RUN addgroup -g 1000 app && \
+    adduser -D -u 1000 -G app -s /sbin/nologin app && \
+    chown -R app:app /app
+USER app
 EXPOSE 3000
 CMD ["node", "apps/web/server.js"]

packages/db/src/scripts/create-user.ts

@@ -0,0 +1,42 @@
+import bcrypt from "bcryptjs";
+import { sql } from "drizzle-orm";
+import { createInterface } from "node:readline/promises";
+import { Writable } from "node:stream";
+import { createClient } from "../index.js";
+
+async function main() {
+  const username = process.argv[2];
+  const role = process.argv[3];
+  if (!username || (role !== "admin" && role !== "user")) {
+    console.error("Usage: create-user <username> <admin|user>");
+    process.exit(2);
+  }
+  const url = process.env.DATABASE_URL;
+  if (!url) {
+    console.error("DATABASE_URL not set");
+    process.exit(2);
+  }
+  const muted = new Writable({ write(_chunk, _enc, cb) { cb(); } });
+  const rl = createInterface({ input: process.stdin, output: muted, terminal: true });
+  process.stdout.write("Password: ");
+  const password = await rl.question("");
+  rl.close();
+  process.stdout.write("\n");
+  if (password.length < 10) {
+    console.error("Password must be at least 10 characters.");
+    process.exit(2);
+  }
+  const hash = await bcrypt.hash(password, 12);
+  const { db, pool } = createClient(url);
+  await db.execute(
+    sql`INSERT INTO operators (username, password_hash, display_name, role, default_timezone)
+        VALUES (${username}, ${hash}, ${username}, ${role}, 'Asia/Kuala_Lumpur')`,
+  );
+  await pool.end();
+  console.log(`Created ${role} ${username}.`);
+  process.exit(0);
+}
+main().catch((e) => {
+  console.error(e);
+  process.exit(1);
+});

packages/db/src/scripts/set-password.ts

@@ -0,0 +1,45 @@
+import bcrypt from "bcryptjs";
+import { sql } from "drizzle-orm";
+import { createInterface } from "node:readline/promises";
+import { Writable } from "node:stream";
+import { createClient } from "../index.js";
+
+async function main() {
+  const username = process.argv[2];
+  if (!username) {
+    console.error("Usage: set-password <username>");
+    process.exit(2);
+  }
+  const url = process.env.DATABASE_URL;
+  if (!url) {
+    console.error("DATABASE_URL not set");
+    process.exit(2);
+  }
+  // Silenced password prompt.
+  const muted = new Writable({ write(_chunk, _enc, cb) { cb(); } });
+  const rl = createInterface({ input: process.stdin, output: muted, terminal: true });
+  process.stdout.write("Password: ");
+  const password = await rl.question("");
+  rl.close();
+  process.stdout.write("\n");
+  if (password.length < 10) {
+    console.error("Password must be at least 10 characters.");
+    process.exit(2);
+  }
+  const hash = await bcrypt.hash(password, 12);
+  const { db, pool } = createClient(url);
+  const result = await db.execute(
+    sql`UPDATE operators SET password_hash = ${hash} WHERE lower(username) = lower(${username}) RETURNING id`,
+  );
+  await pool.end();
+  if (result.rows.length === 0) {
+    console.error(`No user with username ${username}`);
+    process.exit(1);
+  }
+  console.log("Password updated.");
+  process.exit(0);
+}
+main().catch((e) => {
+  console.error(e);
+  process.exit(1);
+});

scripts/create-user.sh

@@ -0,0 +1,3 @@
+#!/usr/bin/env bash
+set -euo pipefail
+NO_SUDO=1 ./scripts/dev.sh exec pnpm --filter @cmbot/db exec tsx src/scripts/create-user.ts "$@"

scripts/set-password.sh

@@ -0,0 +1,3 @@
+#!/usr/bin/env bash
+set -euo pipefail
+NO_SUDO=1 ./scripts/dev.sh exec pnpm --filter @cmbot/db exec tsx src/scripts/set-password.ts "$@"