Files
codex/codex-rs/core/src/windows_sandbox_tests.rs
T
iceweasel-oai 6b3d82daca Use a private desktop for Windows sandbox instead of Winsta0\Default (#14400)
## Summary
- launch Windows sandboxed children on a private desktop instead of
`Winsta0\Default`
- make private desktop the default while keeping
`windows.sandbox_private_desktop=false` as the escape hatch
- centralize process launch through the shared
`create_process_as_user(...)` path
- scope the private desktop ACL to the launching logon SID

## Why
Today sandboxed Windows commands run on the visible shared desktop. That
leaves an avoidable same-desktop attack surface for window interaction,
spoofing, and related UI/input issues. This change moves sandboxed
commands onto a dedicated per-launch desktop by default so the sandbox
no longer shares `Winsta0\Default` with the user session.

The implementation stays conservative on security with no silent
fallback back to `Winsta0\Default`

If private-desktop setup fails on a machine, users can still opt out
explicitly with `windows.sandbox_private_desktop=false`.

## Validation
- `cargo build -p codex-cli`
- elevated-path `codex exec` desktop-name probe returned
`CodexSandboxDesktop-*`
- elevated-path `codex exec` smoke sweep for shell commands, nested
`pwsh`, jobs, and hidden `notepad` launch
- unelevated-path full private-desktop compatibility sweep via `codex
exec` with `-c windows.sandbox=unelevated`
2026-03-13 10:13:39 -07:00

179 lines
4.8 KiB
Rust

use super::*;
use crate::config::types::WindowsToml;
use crate::features::Features;
use crate::features::FeaturesToml;
use pretty_assertions::assert_eq;
use std::collections::BTreeMap;
#[test]
fn elevated_flag_works_by_itself() {
let mut features = Features::with_defaults();
features.enable(Feature::WindowsSandboxElevated);
assert_eq!(
WindowsSandboxLevel::from_features(&features),
WindowsSandboxLevel::Elevated
);
}
#[test]
fn restricted_token_flag_works_by_itself() {
let mut features = Features::with_defaults();
features.enable(Feature::WindowsSandbox);
assert_eq!(
WindowsSandboxLevel::from_features(&features),
WindowsSandboxLevel::RestrictedToken
);
}
#[test]
fn no_flags_means_no_sandbox() {
let features = Features::with_defaults();
assert_eq!(
WindowsSandboxLevel::from_features(&features),
WindowsSandboxLevel::Disabled
);
}
#[test]
fn elevated_wins_when_both_flags_are_enabled() {
let mut features = Features::with_defaults();
features.enable(Feature::WindowsSandbox);
features.enable(Feature::WindowsSandboxElevated);
assert_eq!(
WindowsSandboxLevel::from_features(&features),
WindowsSandboxLevel::Elevated
);
}
#[test]
fn legacy_mode_prefers_elevated() {
let mut entries = BTreeMap::new();
entries.insert("experimental_windows_sandbox".to_string(), true);
entries.insert("elevated_windows_sandbox".to_string(), true);
assert_eq!(
legacy_windows_sandbox_mode_from_entries(&entries),
Some(WindowsSandboxModeToml::Elevated)
);
}
#[test]
fn legacy_mode_supports_alias_key() {
let mut entries = BTreeMap::new();
entries.insert("enable_experimental_windows_sandbox".to_string(), true);
assert_eq!(
legacy_windows_sandbox_mode_from_entries(&entries),
Some(WindowsSandboxModeToml::Unelevated)
);
}
#[test]
fn resolve_windows_sandbox_mode_prefers_profile_windows() {
let cfg = ConfigToml {
windows: Some(WindowsToml {
sandbox: Some(WindowsSandboxModeToml::Unelevated),
..Default::default()
}),
..Default::default()
};
let profile = ConfigProfile {
windows: Some(WindowsToml {
sandbox: Some(WindowsSandboxModeToml::Elevated),
..Default::default()
}),
..Default::default()
};
assert_eq!(
resolve_windows_sandbox_mode(&cfg, &profile),
Some(WindowsSandboxModeToml::Elevated)
);
}
#[test]
fn resolve_windows_sandbox_mode_falls_back_to_legacy_keys() {
let mut entries = BTreeMap::new();
entries.insert("experimental_windows_sandbox".to_string(), true);
let cfg = ConfigToml {
features: Some(FeaturesToml { entries }),
..Default::default()
};
assert_eq!(
resolve_windows_sandbox_mode(&cfg, &ConfigProfile::default()),
Some(WindowsSandboxModeToml::Unelevated)
);
}
#[test]
fn resolve_windows_sandbox_mode_profile_legacy_false_blocks_top_level_legacy_true() {
let mut profile_entries = BTreeMap::new();
profile_entries.insert("experimental_windows_sandbox".to_string(), false);
let profile = ConfigProfile {
features: Some(FeaturesToml {
entries: profile_entries,
}),
..Default::default()
};
let mut cfg_entries = BTreeMap::new();
cfg_entries.insert("experimental_windows_sandbox".to_string(), true);
let cfg = ConfigToml {
features: Some(FeaturesToml {
entries: cfg_entries,
}),
..Default::default()
};
assert_eq!(resolve_windows_sandbox_mode(&cfg, &profile), None);
}
#[test]
fn resolve_windows_sandbox_private_desktop_prefers_profile_windows() {
let cfg = ConfigToml {
windows: Some(WindowsToml {
sandbox: Some(WindowsSandboxModeToml::Unelevated),
sandbox_private_desktop: Some(false),
}),
..Default::default()
};
let profile = ConfigProfile {
windows: Some(WindowsToml {
sandbox: Some(WindowsSandboxModeToml::Elevated),
sandbox_private_desktop: Some(true),
}),
..Default::default()
};
assert!(resolve_windows_sandbox_private_desktop(&cfg, &profile));
}
#[test]
fn resolve_windows_sandbox_private_desktop_defaults_to_true() {
assert!(resolve_windows_sandbox_private_desktop(
&ConfigToml::default(),
&ConfigProfile::default()
));
}
#[test]
fn resolve_windows_sandbox_private_desktop_respects_explicit_cfg_value() {
let cfg = ConfigToml {
windows: Some(WindowsToml {
sandbox_private_desktop: Some(false),
..Default::default()
}),
..Default::default()
};
assert!(!resolve_windows_sandbox_private_desktop(
&cfg,
&ConfigProfile::default()
));
}