cal.pub0.org/apps/web/middleware.ts

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import { get } from "@vercel/edge-config";
import { collectEvents } from "next-collect/server";
import type { NextMiddleware } from "next/server";
import { NextResponse, userAgent } from "next/server";
import { CONSOLE_URL, WEBAPP_URL, WEBSITE_URL } from "@calcom/lib/constants";
import { isIpInBanlist } from "@calcom/lib/getIP";
import { extendEventData, nextCollectBasicSettings } from "@calcom/lib/telemetry";
let cold = true;
const middleware: NextMiddleware = async (req) => {
const url = req.nextUrl;
const requestHeaders = new Headers(req.headers);
// This console.log is required to create a report in axios for hot and cold requests
console.log(cold ? "Cold Start" : "Hot Start");
requestHeaders.set("x-cal-cold-start", cold ? "true" : "false");
cold = false;
if (!url.pathname.startsWith("/api")) {
//
// NOTE: When tRPC hits an error a 500 is returned, when this is received
// by the application the user is automatically redirected to /auth/login.
//
// - For this reason our matchers are sufficient for an app-wide maintenance page.
//
try {
// Check whether the maintenance page should be shown
const isInMaintenanceMode = await get<boolean>("isInMaintenanceMode");
// If is in maintenance mode, point the url pathname to the maintenance page
if (isInMaintenanceMode) {
req.nextUrl.pathname = `/maintenance`;
return NextResponse.rewrite(req.nextUrl);
}
} catch (error) {
// show the default page if EDGE_CONFIG env var is missing,
// but log the error to the console
// console.error(error);
}
}
if (["/api/collect-events", "/api/auth"].some((p) => url.pathname.startsWith(p))) {
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const callbackUrl = url.searchParams.get("callbackUrl");
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const { isBot } = userAgent(req);
if (
isBot ||
(callbackUrl && ![CONSOLE_URL, WEBAPP_URL, WEBSITE_URL].some((u) => callbackUrl.startsWith(u))) ||
isIpInBanlist(req)
) {
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// DDOS Prevention: Immediately end request with no response - Avoids a redirect as well initiated by NextAuth on invalid callback
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req.nextUrl.pathname = "/api/nope";
return NextResponse.redirect(req.nextUrl);
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}
}
// Ensure that embed query param is there in when /embed is added.
// query param is the way in which client side code knows that it is in embed mode.
if (url.pathname.endsWith("/embed") && typeof url.searchParams.get("embed") !== "string") {
url.searchParams.set("embed", "");
return NextResponse.redirect(url);
}
// Don't 404 old routing_forms links
if (url.pathname.startsWith("/apps/routing_forms")) {
url.pathname = url.pathname.replace("/apps/routing_forms", "/apps/routing-forms");
return NextResponse.rewrite(url);
}
if (url.pathname.startsWith("/api/trpc/")) {
requestHeaders.set("x-cal-timezone", req.headers.get("x-vercel-ip-timezone") ?? "");
}
if (url.pathname.startsWith("/auth/login")) {
// Use this header to actually enforce CSP, otherwise it is running in Report Only mode on all pages.
requestHeaders.set("x-csp-enforce", "true");
}
return NextResponse.next({
request: {
headers: requestHeaders,
},
});
};
export const config = {
matcher: [
"/api/collect-events/:path*",
"/api/auth/:path*",
"/apps/routing_forms/:path*",
"/:path*/embed",
"/api/trpc/:path*",
"/auth/login",
],
};
export default collectEvents({
middleware,
...nextCollectBasicSettings,
cookieName: "__clnds",
extend: extendEventData,
});