* Gateway: require explicit auth for url overrides
* Gateway: scope credential blocking to non-local URLs only
Address review feedback: the previous fix blocked credential fallback for
ALL URL overrides, which was overly strict and could break workflows that
use --url to switch between loopback/tailnet without passing credentials.
Now credential fallback is only blocked for non-local URLs (public IPs,
external hostnames). Local addresses (127.0.0.1, localhost, private IPs
like 192.168.x.x, 10.x.x.x, tailnet 100.x.x.x) still get credential
fallback as before.
This maintains the security fix (preventing credential exfiltration to
attacker-controlled URLs) while preserving backward compatibility for
legitimate local URL overrides.
* Security: require explicit credentials for gateway url overrides (#8113) (thanks @victormier)
* Gateway: reuse explicit auth helper for url overrides (#8113) (thanks @victormier)
* Tests: format gateway chat test (#8113) (thanks @victormier)
* Tests: require explicit auth for gateway url overrides (#8113) (thanks @victormier)
---------
Co-authored-by: Victor Mier <victormier@gmail.com>
This PR includes three main improvements:
1. Tailscale Binary Detection with Fallback Strategies
- Added findTailscaleBinary() with multi-strategy detection:
* PATH lookup via 'which' command
* Known macOS app path (/Applications/Tailscale.app/Contents/MacOS/Tailscale)
* find /Applications for Tailscale.app
* locate database lookup
- Added getTailscaleBinary() with caching
- Updated all Tailscale operations to use detected binary
- Added TUI warning when Tailscale binary not found for serve/funnel modes
2. Custom Gateway IP Binding with Fallback
- New bind mode "custom" allowing user-specified IP with fallback to 0.0.0.0
- Removed "tailnet" mode (folded into "auto")
- All modes now support graceful fallback: custom (if fail → 0.0.0.0), loopback (127.0.0.1 → 0.0.0.0), auto (tailnet → 0.0.0.0), lan (0.0.0.0)
- Added customBindHost config option for custom bind mode
- Added canBindTo() helper to test IP availability before binding
- Updated configure and onboarding wizards with new bind mode options
3. Health Probe Password Auth Fix
- Gateway probe now tries both new and old passwords
- Fixes issue where password change fails health check if gateway hasn't restarted yet
- Uses nextConfig password first, falls back to baseConfig password if needed
Files changed:
- src/infra/tailscale.ts: Binary detection + caching
- src/gateway/net.ts: IP binding with fallback logic
- src/config/types.ts: BridgeBindMode type + customBindHost field
- src/commands/configure.ts: Health probe dual-password try + Tailscale detection warning + bind mode UI
- src/wizard/onboarding.ts: Tailscale detection warning + bind mode UI
- src/gateway/server.ts: Use new resolveGatewayBindHost
- src/gateway/call.ts: Updated preferTailnet logic (removed "tailnet" mode)
- src/commands/onboard-types.ts: Updated GatewayBind type
- src/commands/onboard-helpers.ts: resolveControlUiLinks updated
- src/cli/*.ts: Updated bind mode casts
- src/gateway/call.test.ts: Removed "tailnet" mode test
