A dedicated /terminal page with a target rail: one terminal per fleet server (SSH)
plus one for the Clusev host itself. php-fpm cannot hold an interactive PTY, so a
small Node sidecar (ws + ssh2 + node-pty) bridges xterm.js to the PTY.
Flow: the Livewire page mints a single-use, 60s TerminalSession token and dispatches
it to an Alpine xterm island; the browser opens a same-origin WS (/terminal/ws,
proxied by nginx in dev / Caddy in prod to terminal:3000); the sidecar burns the
token at an internal resolve endpoint (shared-secret header, private network only)
for a connection spec, then opens an SSH PTY (decrypted credential, never sent to the
browser) or a local host PTY. Real shell = native Tab/Shift-Tab completion.
Security:
- token burned ATOMICALLY (single conditional UPDATE) — no double-open race
- resolve endpoint guarded by hash_equals shared secret, exempt from CSRF + PanelScheme
host enforcement (private net only), returns decrypted creds over the internal net
- sidecar enforces same-origin on the WS upgrade (hostname match, port-agnostic)
- single-use 60s tokens, swept daily so the table can't grow unbounded
Verified in-browser (R12): host + server terminals connect, accept keyboard input,
run commands, Tab-complete; cross-origin WS rejected; zero console errors. 9 feature
tests cover minting, the resolve spec, single-use burn, expiry, and locked creds.
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
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