pangolin/server/middlewares/stripDuplicateSessions.ts
2025-10-05 15:41:05 -07:00

49 lines
1.5 KiB
TypeScript

import { NextFunction, Response } from "express";
import ErrorResponse from "@server/types/ErrorResponse";
import {
SESSION_COOKIE_NAME,
validateSessionToken
} from "@server/auth/sessions/app";
export const stripDuplicateSesions = async (
req: any,
res: Response<ErrorResponse>,
next: NextFunction
) => {
const cookieHeader: string | undefined = req.headers.cookie;
if (!cookieHeader) {
return next();
}
const cookies = cookieHeader.split(";").map((cookie) => cookie.trim());
const sessionCookies = cookies.filter((cookie) =>
cookie.startsWith(`${SESSION_COOKIE_NAME}=`)
);
const validSessions: string[] = [];
if (sessionCookies.length > 1) {
for (const cookie of sessionCookies) {
const cookieValue = cookie.split("=")[1];
const res = await validateSessionToken(cookieValue);
if (res.session && res.user) {
validSessions.push(cookieValue);
}
}
if (validSessions.length > 0) {
const newCookieHeader = cookies.filter((cookie) => {
if (cookie.startsWith(`${SESSION_COOKIE_NAME}=`)) {
const cookieValue = cookie.split("=")[1];
return validSessions.includes(cookieValue);
}
return true;
});
req.headers.cookie = newCookieHeader.join("; ");
if (req.cookies) {
req.cookies[SESSION_COOKIE_NAME] = validSessions[0];
}
}
}
return next();
};