Handle unrelay and relaying better

server/routers/olm/handleOlmUnRelayMessage.ts

@@ -0,0 +1,96 @@
+import { db, exitNodes, sites } from "@server/db";
+import { MessageHandler } from "@server/routers/ws";
+import { clients, clientSitesAssociationsCache, Olm } from "@server/db";
+import { and, eq } from "drizzle-orm";
+import { updatePeer as newtUpdatePeer } from "../newt/peers";
+import logger from "@server/logger";
+
+export const handleOlmUnRelayMessage: MessageHandler = async (context) => {
+    const { message, client: c, sendToClient } = context;
+    const olm = c as Olm;
+
+    logger.info("Handling unrelay olm message!");
+
+    if (!olm) {
+        logger.warn("Olm not found");
+        return;
+    }
+
+    if (!olm.clientId) {
+        logger.warn("Olm has no site!"); // TODO: Maybe we create the site here?
+        return;
+    }
+
+    const clientId = olm.clientId;
+
+    const [client] = await db
+        .select()
+        .from(clients)
+        .where(eq(clients.clientId, clientId))
+        .limit(1);
+
+    if (!client) {
+        logger.warn("Client not found");
+        return;
+    }
+
+    // make sure we hand endpoints for both the site and the client and the lastHolePunch is not too old
+    if (!client.pubKey) {
+        logger.warn("Client has no endpoint or listen port");
+        return;
+    }
+
+    const { siteId } = message.data;
+
+    // Get the site
+    const [site] = await db
+        .select()
+        .from(sites)
+        .where(eq(sites.siteId, siteId))
+        .limit(1);
+
+    if (!site) {
+        logger.warn("Site not found or has no exit node");
+        return;
+    }
+
+    const [clientSiteAssociation] = await db
+        .update(clientSitesAssociationsCache)
+        .set({
+            isRelayed: false
+        })
+        .where(
+            and(
+                eq(clientSitesAssociationsCache.clientId, olm.clientId),
+                eq(clientSitesAssociationsCache.siteId, siteId)
+            )
+        )
+        .returning();
+
+    if (!clientSiteAssociation) {
+        logger.warn("Client-Site association not found");
+        return;
+    }
+
+    if (!clientSiteAssociation.endpoint) {
+        logger.warn("Client-Site association has no endpoint, cannot unrelay");
+        return;
+    }
+
+    // update the peer on the exit node
+    await newtUpdatePeer(siteId, client.pubKey, {
+        endpoint: clientSiteAssociation.endpoint // this is the endpoint of the client to connect directly to the exit node
+    });
+
+    return {
+        message: {
+            type: "olm/wg/peer/unrelay",
+            data: {
+                siteId: siteId,
+                endpoint: site.endpoint
+            }
+        },
+        broadcast: false,
+        excludeSender: false
+    };
+};