90 lines
2.2 KiB
TypeScript
90 lines
2.2 KiB
TypeScript
"use server";
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import { eq } from "drizzle-orm";
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import { env } from "@/env";
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import { checkLogin } from "@/lib/auth/password";
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import { db, User } from "@/lib/db";
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import { clientIp, rateLimit } from "@/lib/rate-limit";
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import { captchaConfig, verifyCaptcha } from "@/lib/services/captcha";
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import { siteSettings } from "@/lib/services/site-settings";
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export type PrecheckResult =
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| "ok"
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| "invalid"
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| "twofactor"
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| "unverified"
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| "captcha";
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/**
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* Validates username+password WITHOUT creating a session, and reports whether a
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* TOTP code is still required. Lets the login form do the two-step 2FA flow.
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* Also enforces captcha + optional email-verification when configured.
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*/
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export async function precheckLogin(
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username: string,
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password: string,
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captchaToken?: string | null,
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): Promise<PrecheckResult> {
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const u = String(username ?? "")
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.normalize("NFC")
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.trim();
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const p = String(password ?? "");
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if (!u || !p) return "invalid";
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const ip = await clientIp();
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if (!(await rateLimit(`precheck:${ip}`, 10, 5 * 60_000)).ok) return "invalid";
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const cfg = await captchaConfig();
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if (cfg.provider !== "none") {
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if (!(await verifyCaptcha(captchaToken ?? null, ip))) return "captcha";
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}
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let user: {
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password: string;
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twoFactorConfirmedAt: Date | null;
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mail: string | null;
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mailVerified: string;
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} | null;
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try {
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const [row] = await db
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.select({
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password: User.password,
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twoFactorConfirmedAt: User.twoFactorConfirmedAt,
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mail: User.mail,
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mailVerified: User.mailVerified,
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})
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.from(User)
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.where(eq(User.username, u))
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.limit(1);
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user = row ?? null;
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} catch {
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return "invalid";
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}
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if (!user) {
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// Prevent timing-based enumeration: always run a dummy hash check.
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await checkLogin(
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p,
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"$2y$12$abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZabcd",
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{
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convertPasswords: false,
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},
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);
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return "invalid";
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}
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const res = await checkLogin(p, user.password, {
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convertPasswords: env.CONVERT_PASSWORDS,
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});
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if (!res.valid) return "invalid";
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if (
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(await siteSettings.getBool("require_email_verification", false)) &&
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user.mail &&
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user.mailVerified !== "1"
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) {
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return "unverified";
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}
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return user.twoFactorConfirmedAt ? "twofactor" : "ok";
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}
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