📧 feat: email verification (#2344)

* feat: verification email

* chore: email verification invalid; localize: update

* fix: redirect to login when signup: fix: save emailVerified correctly

* docs: update ALLOW_UNVERIFIED_EMAIL_LOGIN; fix: don't accept login only when ALLOW_UNVERIFIED_EMAIL_LOGIN = true

* fix: user needs to be authenticated

* style: update

* fix: registration success message and redirect logic

* refactor: use `isEnabled` in ALLOW_UNVERIFIED_EMAIL_LOGIN

* refactor: move checkEmailConfig to server/utils

* refactor: use req as param for verifyEmail function

* chore: jsdoc

* chore: remove console log

* refactor: rename `createNewUser` to `createSocialUser`

* refactor: update typing and add expiresAt field to userSchema

* refactor: begin use of user methods over direct model access for User

* refactor: initial email verification rewrite

* chore: typing

* refactor: registration flow rewrite

* chore: remove help center text

* refactor: update getUser to getUserById and add findUser methods. general fixes from recent changes

* refactor: Update updateUser method to remove expiresAt field and use $set and $unset operations, createUser now returns Id only

* refactor: Update openidStrategy to use optional chaining for avatar check, move saveBuffer init to buffer condition

* refactor: logout on deleteUser mutatation

* refactor: Update openidStrategy login success message format

* refactor: Add emailVerified field to Discord and Facebook profile details

* refactor: move limiters to separate middleware dir

* refactor: Add limiters for email verification and password reset

* refactor: Remove getUserController and update routes and controllers accordingly

* refactor: Update getUserById method to exclude password and version fields

* refactor: move verification to user route, add resend verification option

* refactor: Improve email verification process and resend option

* refactor: remove more direct model access of User and remove unused code

* refactor: replace user authentication methods and token generation

* fix: add user.id to jwt user

* refactor: Update AuthContext to include setError function, add resend link to Login Form, make registration redirect shorter

* fix(updateUserPluginsService): ensure userPlugins variable is defined

* refactor: Delete all shared links for a specific user

* fix: remove use of direct User.save() in handleExistingUser

* fix(importLibreChatConvo): handle missing createdAt field in messages

---------

Co-authored-by: Danny Avila <danny@librechat.ai>

api/server/middleware/limiters/uploadLimiters.js

@@ -0,0 +1,75 @@
+const rateLimit = require('express-rate-limit');
+const { ViolationTypes } = require('librechat-data-provider');
+const logViolation = require('~/cache/logViolation');
+
+const getEnvironmentVariables = () => {
+  const FILE_UPLOAD_IP_MAX = parseInt(process.env.FILE_UPLOAD_IP_MAX) || 100;
+  const FILE_UPLOAD_IP_WINDOW = parseInt(process.env.FILE_UPLOAD_IP_WINDOW) || 15;
+  const FILE_UPLOAD_USER_MAX = parseInt(process.env.FILE_UPLOAD_USER_MAX) || 50;
+  const FILE_UPLOAD_USER_WINDOW = parseInt(process.env.FILE_UPLOAD_USER_WINDOW) || 15;
+
+  const fileUploadIpWindowMs = FILE_UPLOAD_IP_WINDOW * 60 * 1000;
+  const fileUploadIpMax = FILE_UPLOAD_IP_MAX;
+  const fileUploadIpWindowInMinutes = fileUploadIpWindowMs / 60000;
+
+  const fileUploadUserWindowMs = FILE_UPLOAD_USER_WINDOW * 60 * 1000;
+  const fileUploadUserMax = FILE_UPLOAD_USER_MAX;
+  const fileUploadUserWindowInMinutes = fileUploadUserWindowMs / 60000;
+
+  return {
+    fileUploadIpWindowMs,
+    fileUploadIpMax,
+    fileUploadIpWindowInMinutes,
+    fileUploadUserWindowMs,
+    fileUploadUserMax,
+    fileUploadUserWindowInMinutes,
+  };
+};
+
+const createFileUploadHandler = (ip = true) => {
+  const {
+    fileUploadIpMax,
+    fileUploadIpWindowInMinutes,
+    fileUploadUserMax,
+    fileUploadUserWindowInMinutes,
+  } = getEnvironmentVariables();
+
+  return async (req, res) => {
+    const type = ViolationTypes.FILE_UPLOAD_LIMIT;
+    const errorMessage = {
+      type,
+      max: ip ? fileUploadIpMax : fileUploadUserMax,
+      limiter: ip ? 'ip' : 'user',
+      windowInMinutes: ip ? fileUploadIpWindowInMinutes : fileUploadUserWindowInMinutes,
+    };
+
+    await logViolation(req, res, type, errorMessage);
+    res.status(429).json({ message: 'Too many file upload requests. Try again later' });
+  };
+};
+
+const createFileLimiters = () => {
+  const { fileUploadIpWindowMs, fileUploadIpMax, fileUploadUserWindowMs, fileUploadUserMax } =
+    getEnvironmentVariables();
+
+  const fileUploadIpLimiter = rateLimit({
+    windowMs: fileUploadIpWindowMs,
+    max: fileUploadIpMax,
+    handler: createFileUploadHandler(),
+  });
+
+  const fileUploadUserLimiter = rateLimit({
+    windowMs: fileUploadUserWindowMs,
+    max: fileUploadUserMax,
+    handler: createFileUploadHandler(false),
+    keyGenerator: function (req) {
+      return req.user?.id; // Use the user ID or NULL if not available
+    },
+  });
+
+  return { fileUploadIpLimiter, fileUploadUserLimiter };
+};
+
+module.exports = {
+  createFileLimiters,
+};