Files
codex/codex-rs/app-server-protocol/schema/json/v2/WindowsSandboxSetupStartParams.json
iceweasel-oai 4b4f61d379 app-server: require absolute cwd for windowsSandbox/setupStart (#13833)
## Summary
- require windowsSandbox/setupStart.cwd to be an AbsolutePathBuf
- reject relative cwd values at request parsing instead of normalizing
them later in the setup flow
- add RPC-layer coverage for relative cwd rejection and update the
checked-in protocol schemas/docs

## Why
windowsSandbox/setupStart was carrying the client-provided cwd as a raw
PathBuf for command_cwd while config derivation normalized the same
value into an absolute policy_cwd.

That left room for relative-path ambiguity in the setup path, especially
for inputs like cwd: "repo". Making the RPC accept only absolute paths
removes that split entirely: the handler now receives one
already-validated absolute path and uses it for both config derivation
and setup.

This keeps the trust model unchanged. Trusted clients could already
choose the session cwd; this change is only about making the setup RPC
reject relative paths so command_cwd and policy_cwd cannot diverge.

## Testing
- cargo test -p codex-app-server windows_sandbox_setup (run locally by
user)
- cargo test -p codex-app-server-protocol windows_sandbox (run locally
by user)
2026-03-06 22:47:08 -08:00

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{
"$schema": "http://json-schema.org/draft-07/schema#",
"definitions": {
"AbsolutePathBuf": {
"description": "A path that is guaranteed to be absolute and normalized (though it is not guaranteed to be canonicalized or exist on the filesystem).\n\nIMPORTANT: When deserializing an `AbsolutePathBuf`, a base path must be set using [AbsolutePathBufGuard::new]. If no base path is set, the deserialization will fail unless the path being deserialized is already absolute.",
"type": "string"
},
"WindowsSandboxSetupMode": {
"enum": [
"elevated",
"unelevated"
],
"type": "string"
}
},
"properties": {
"cwd": {
"anyOf": [
{
"$ref": "#/definitions/AbsolutePathBuf"
},
{
"type": "null"
}
]
},
"mode": {
"$ref": "#/definitions/WindowsSandboxSetupMode"
}
},
"required": [
"mode"
],
"title": "WindowsSandboxSetupStartParams",
"type": "object"
}