the files

2026-10-14 06:59:51 +02:00
parent f6175893fc
commit 2040419525
1855 changed files with 6735668 additions and 0 deletions
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+using Microsoft.AspNetCore.Mvc;
+using Campus_live_rewrite.api.dbs;
+
+namespace Campus_live_rewrite.Controllers
+{
+    // ---------------------------------------------------------------------------------
+    // Room lookup for the Tachyon voice server.
+    //
+    // Tachyon has NO room id on its wire - the client's voice ConnectionData carries only
+    // the AccountId (plaintext) plus opaque RSA blobs. So Tachyon resolves which room a
+    // speaker is in by asking us: GET /tachyon?id=<AccountId>, expecting a BARE numeric
+    // roomInstanceId in text/plain (see tachyon-server-master/src/room_lookup.cpp - it
+    // strtoull's the body and treats 0 / non-200 / non-numeric as "isolate this client",
+    // i.e. they hear no one). It scopes its Dissonance relay per returned room id.
+    //
+    // Set Tachyon's config  room_url = https://<host>/tachyon  (it appends ?id=<n>).
+    //
+    // Unauthenticated on purpose: room_lookup.cpp issues a plain GET with no token, exactly
+    // as the RecFlare reference does. The only thing exposed is which room-instance a given
+    // account is in, keyed on a numeric id we already hand out publicly; the id is validated
+    // as an integer before use. Returns "0" (nowhere) for anything we can't positively place,
+    // which fails safe: Tachyon isolates the client rather than leaking cross-room voice.
+    // ---------------------------------------------------------------------------------
+    [ApiController]
+    public class TachyonController : ControllerBase
+    {
+        [HttpGet("/tachyon")]
+        public IActionResult ResolveRoom([FromQuery] string? id)
+        {
+            if (string.IsNullOrWhiteSpace(id) || !ulong.TryParse(id, out var accountId))
+                return Content("0", "text/plain");
+
+            var (online, room) = HeartbeatDB.PeekPresence(accountId);
+            long instance = (online && room != null) ? room.roomInstanceId : 0;
+
+            return Content(instance.ToString(), "text/plain");
+        }
+    }
+}