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3x-ui/internal/web
mrnickson-hue 7db92d6318 fix(inbound): reject finalmask + REALITY combo (crashes Xray-core) (#5861)
* fix(inbound): reject finalmask configured together with REALITY security

finalmask wraps the connection before REALITY's own handshake takes
over (TcpmaskManager.WrapListener -> WrapConnServer runs at Accept()
time, ahead of reality.Server()). reality.Server() does an unchecked
type assertion assuming a raw *net.TCPConn; with finalmask in front,
that assertion panics and takes down the entire xray-core process on
the very first connection to the inbound - not just that connection.

Upstream (XTLS/Xray-core#6453) confirmed this will be documented as
unsupported rather than made graceful, so the panel needs to stop this
combination from being saved rather than relying on docs.

AddInbound/UpdateInbound now reject streamSettings with
security=reality and a non-empty finalmask.tcp/udp with a clear error
instead of letting it reach Xray.

Related: MHSanaei/3x-ui#5857

* fix(inbound): heal legacy rows and narrow the finalmask+REALITY guard

Per review feedback on #5861:

- Narrow the check to finalmask.tcp only. xray-core's TcpmaskManager
  (the thing that wraps the TCP listener ahead of REALITY's handshake,
  the actual cause of the panic) is only constructed when tcp masks
  are present; a finalmask.udp-only config never touches that accept
  path and doesn't reproduce the crash, so it shouldn't be rejected.
  Extracted the shared check into finalMaskRealityTcpMasks() so both
  the save-time guard and the config-build heal below use one
  definition of "dangerous".

- Heal already-saved bad rows in GetXrayConfig(), the same way
  liftXhttpSessionIDKeys and HealShadowsocksClientMethods heal other
  legacy data at config-build time. AddInbound/UpdateInbound only cover
  the two save paths - a row that already carries this combination
  (saved before this guard existed, synced from a node, restored from
  a backup, or edited directly in the DB) would still crash Xray-core
  on the next restart without this.

- Add end-to-end tests exercising AddInbound, UpdateInbound, and
  GetXrayConfig directly (seeding rows through the real DB) rather
  than only unit-testing the extracted helper in isolation, so a
  wiring regression in any of the three call sites gets caught.
2026-07-08 20:29:51 +02:00
..
2026-06-28 18:10:38 +02:00