Possibility to configure an OpenID Connect provider on the instance

level WIP (#128)

Fix chat federation.

server/lib/federation/outgoing.ts

@@ -190,6 +190,7 @@ async function _serverBuildInfos (
   const prosodyDomain = await getProsodyDomain(options)
   const mucDomain = 'room.' + prosodyDomain
   const anonDomain = 'anon.' + prosodyDomain
+  const externalDomain = 'external.' + prosodyDomain
 
   let directs2s
   if (settings['prosody-room-allow-s2s'] && settings['prosody-s2s-port']) {
@@ -232,6 +233,7 @@ async function _serverBuildInfos (
   return {
     host: prosodyDomain,
     muc: mucDomain,
+    external: externalDomain, // we will always add it, even if disabled. Can't cause trouble.
     directs2s,
     websockets2s,
     anonymous

server/lib/federation/sanitize.ts

@@ -88,6 +88,12 @@ function sanitizePeertubeLiveChatServerInfos (
     muc
   }
 
+  // This comes with livechat >= 9.0.0, can be absent.
+  const external = _validateHost(xmppserver.external, checkHost)
+  if (external) {
+    r.external = external
+  }
+
   if (xmppserver.directs2s) {
     if ((typeof xmppserver.directs2s) === 'object') {
       const port = xmppserver.directs2s.port

server/lib/federation/storage.ts

@@ -122,7 +122,8 @@ async function storeRemoteServerInfos (
   const mainHost = xmppserver.host
   const hosts = [
     xmppserver.host,
-    xmppserver.muc
+    xmppserver.muc,
+    xmppserver.external
   ]
 
   for (const host of hosts) {

server/lib/federation/types.ts

@@ -7,6 +7,7 @@ interface VideoBuildResultContext {
 interface PeertubeXMPPServerInfos {
   host: string // main host (should be the peertube url)
   muc: string // muc component url
+  external?: string // external users virtualhost (livechat version >=9.0.0)
   directs2s?: { // if direct S2S is enabled
     port: string
   }