Files
Lucas RayanandClaude Sonnet 5.5 60c6f5731c fix(bimi): each domain's logo under its own URL, and the publisher actually wired
Two bugs found by the setup check right after the last deploy:

- every domain's BIMI record named the deployment's own mail host, and the
  server picked the domain from the host name, so only the primary domain's
  logo could be fetched: ciberlab.seg.br's record pointed at a 404. The logo
  and the certificate are now served at /.well-known/bimi/<domain>/..., the
  record names that, and the webmail routes it. The old path still answers
- SetBimiPublisher ran before SetBimiAPI, found no BIMI API to attach to and
  was dropped, so saving a logo never published the DNS record by itself. It is
  kept on the router now, so the order does not matter

Co-Authored-By: Claude Sonnet 5.5 <noreply@anthropic.com>
2026-10-16 18:49:52 -03:00

68 lines
2.8 KiB
TypeScript

import type { NextConfig } from "next";
const PROTOCOLS_SERVICE_URL = process.env.PROTOCOLS_SERVICE_URL ?? "http://protocols:8080";
const nextConfig: NextConfig = {
output: "standalone",
// The event stream is a WebSocket upgrade, which a route handler cannot
// proxy: a handler sees a finished request, not the raw connection. A
// rewrite hands the socket to Next's own proxy, which does upgrade.
// Everything else under /api/v1 keeps going through the route handler,
// which needs to read and rewrite Set-Cookie.
async rewrites() {
return [
{
source: "/api/v1/events",
destination: `${PROTOCOLS_SERVICE_URL}/api/v1/events`,
},
// The well-known documents belong to the protocols service, but the
// hostnames senders ask for - mta-sts.<domain> above all - resolve to
// this app. Without these rewrites the Next 404 page was served in
// place of the MTA-STS policy: the _mta-sts TXT record advertised a
// policy that could not be fetched, so every sender fell back to
// "no-policy-found" and no TLS policy was enforced on inbound mail.
// Google's daily TLS-RPT report reports precisely that.
//
// A rewrite rather than a redirect, because RFC 8461 section 3.3 has
// the sender fetch that exact HTTPS path and it need not follow one.
{
source: "/.well-known/mta-sts.txt",
destination: `${PROTOCOLS_SERVICE_URL}/.well-known/mta-sts.txt`,
},
{
// Fetched by receiving mail providers evaluating a message, which
// hold no session and never will.
source: "/.well-known/bimi/default.svg",
destination: `${PROTOCOLS_SERVICE_URL}/.well-known/bimi/default.svg`,
},
{
// A record names its own domain in the path, so every domain the server
// hosts can publish its own logo and certificate from this one host.
source: "/.well-known/bimi/:domain/default.svg",
destination: `${PROTOCOLS_SERVICE_URL}/.well-known/bimi/:domain/default.svg`,
},
{
source: "/.well-known/bimi/:domain/vmc.pem",
destination: `${PROTOCOLS_SERVICE_URL}/.well-known/bimi/:domain/vmc.pem`,
},
{
// The BIMI certificate (VMC/CMC) the DNS record's a= tag points at,
// fetched the same way as the logo above.
source: "/.well-known/bimi/vmc.pem",
destination: `${PROTOCOLS_SERVICE_URL}/.well-known/bimi/vmc.pem`,
},
{
source: "/.well-known/security.txt",
destination: `${PROTOCOLS_SERVICE_URL}/.well-known/security.txt`,
},
{
source: "/.well-known/autoconfig/mail/config-v1.1.xml",
destination: `${PROTOCOLS_SERVICE_URL}/.well-known/autoconfig/mail/config-v1.1.xml`,
},
];
},
};
export default nextConfig;