- ConfigureWireguard and RemoveWireguardPeer mutate the hub too, and were not
taking the lock, so a sync could still read the interface around them and
write stale state. Both now hold wireguard:hub, which is what makes the
read/mutation guarantee actually hold.
- The duplicate-key check ran before the allocation lock, so two concurrent
creations with the same key both passed it and the loser hit the unique index
as an unhandled 500. The check moved inside the lock, with the index kept as
a caught backstop for any writer that does not take it — reproduced in a test
by inserting a colliding row from within the allocation call.
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
Two more from Codex:
- Addresses come from one subnet but live in two tables (hosts.wg_ip and
vpn_peers.allowed_ip), so a concurrent host onboarding and console creation
could each see the same address as free and both insert — neither unique
index sees the other. Creation now waits on Cache::lock('wireguard:allocate'),
the same lock ConfigureWireguard already holds while reserving a host address.
- mount() runs once, so revoking vpn.manage left an open tab polling every five
seconds and still receiving fresh peer state. Authorization now also runs on
hydration, which is what the poll goes through.
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
Two lifecycle holes Codex found in the new VPN management:
1. Delete removed the row before the hub knew. If the removal job was delayed
or failed, SyncVpnPeers saw a peer it did not recognise and adopted it back
as a live access — silently restoring what an operator had just revoked, and
with no row left to revoke it again. Deletion is now a soft-delete
tombstone: the row survives until the hub confirms the peer is gone, the
sync retries the removal instead of adopting, and the tombstone is purged
only once the peer is really absent. It also keeps the key and the tunnel
address reserved meanwhile, so neither is handed out twice.
2. ApplyVpnPeer applied the state captured at dispatch. A retried block job
could therefore undo a later unblock, and nothing would repair it — the sync
only observes state, it never re-applies intent. The job now resolves the
current desired state from the row and treats its payload as a fallback for
the case where the row is already gone.
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
The console can now create, block and remove VPN accesses, and shows who is
actually connected — traffic counters, source endpoint and last handshake.
Design notes:
- The web container has no wg0, so the page never talks to WireGuard. Live
state is copied in by SyncVpnPeers on the provisioning queue (the only worker
whose container owns the interface); the page polls the database and merely
nudges that job, throttled so many open tabs cannot flood the queue.
- enabled (operator intent) and present (observed on the hub) are stored
separately, so a sync can never quietly undo a block and drift stays visible
as "wird angewendet".
- The sync adopts peers the host pipeline registered, naming them after their
host — otherwise "who is on the VPN" would have blind spots.
- Keypairs are generated in PHP via libsodium rather than shelling out to
wg genkey (no interface in this container, and it keeps generation testable).
The private key is shown once and never stored.
- allocateIp() now also considers vpn_peers, which would otherwise be handed a
tunnel address a host already holds.
- vpn.manage is a new capability held by Owner/Admin only, and it hides the nav
entry too — a VPN access reaches the management network.
Verified end to end against the real hub, not just mocks: created an access in
the browser, connected with the generated config, watched the console flip to
"Verbunden" with real counters, then blocked it and confirmed the peer was
gone from wg0 and the client could no longer handshake.
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
nexxo