8bb5c098cc
This refactors the bypass (sandbox escape) mechanism to work with remote
toolsrv deployments. Previously, bypass used a Unix socket which only
works when toolsrv runs locally. Now:
1. toolsrv exposes bypass/{pending,resolve} 9P files
- pending: blocking read returns next bypass request as JSON
- resolve: write JSON {id, approved, error} to complete request
2. olliesrv reads bypass/pending in a loop per session
- Evaluates requests through the existing bypass broker
- Policy check, rate limiting, user notification all stay in olliesrv
- Writes approval/denial back to bypass/resolve
3. When approved, toolsrv executes the command directly (no sandbox)
- Execution happens on toolsrv's host (local or remote)
- Output streams back through the normal tool call path
This enables bypass to work when toolsrv is remote:
- User sees the approval notification locally
- Command executes on the remote host outside its sandbox
Architecture:
toolsrv (remote) olliesrv (local)
┌─────────────────┐ ┌──────────────────┐
│ sandboxed cmd │ │ bypass broker │
│ ↓ │ │ - policy │
│ bypass.Submit() │──────│ - notification │
│ ↓ │ 9P │ - rate limit │
│ wait for result │←─────│ - user approval │
│ ↓ │ └──────────────────┘
│ execute direct │
└─────────────────┘
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| .. | ||
| internal | ||
| test | ||
| .gitignore | ||
| integration_test.go | ||
| main.go | ||
| p9.go | ||