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## Why When Guardian or the sandbox network proxy detects and denies a network attempt, core cancels the associated execution through `ExecExpiration`. The Windows sandbox capture path was only forwarding the timeout component of that expiration state. As a result, a sandboxed Windows command whose network attempt had already been denied could keep running until its timeout elapsed rather than terminating promptly in response to the denial. This change closes that cancellation-propagation gap for Windows sandbox execution. ## What changed - Added `WindowsSandboxCancellationToken` as the cancellation hook exposed to Windows capture backends. - Extracted the cancellation token from `ExecExpiration` in core and passed it to both the direct and elevated Windows sandbox capture paths alongside the existing timeout. - Updated direct capture to poll for either process exit, timeout, or cancellation and to terminate cancelled processes without reporting them as timed out. - Updated elevated capture to watch for cancellation and send the existing `Terminate` IPC frame to the elevated runner. The watcher parks for 50 ms between checks to bound response latency without a tight busy wait. - Added Windows regression coverage for a long-running PowerShell command: cancellation ends capture before its timeout and does not set `timed_out`. - Added a visible skip diagnostic when that PowerShell-dependent regression test cannot execute, and consolidated the duplicated expiration-policy branch identified in review. ## Security This improves enforcement after a denied network attempt has been attributed to a Windows sandboxed execution: the command no longer remains alive simply because Windows capture lost the cancellation signal. This PR does not claim to make Windows offline mode an airtight no-network or no-exfiltration boundary. It does not introduce AppContainer or change how network denial is detected; it makes an already-detected denial promptly stop the affected sandboxed command. ## Validation ### Commands run - `just fmt` - `cargo test -p codex-windows-sandbox` - `cargo test -p codex-core network_denial` - `cargo clippy -p codex-core -p codex-windows-sandbox --tests --no-deps -- -D warnings` - `just argument-comment-lint -p codex-windows-sandbox -p codex-core` The new capture regression is `cfg(target_os = "windows")`, so Windows CI is the execution coverage for that test path. The local macOS test runs validate the host-runnable crate and core network-denial behavior. --------- Co-authored-by: Codex <noreply@openai.com>
3cf737e4e3
·
2026-05-28 21:28:06 +00:00
6,929 Commits
Codex CLI is a coding agent from OpenAI that runs locally on your computer.
If you want Codex in your code editor (VS Code, Cursor, Windsurf), install in your IDE.
If you want the desktop app experience, run
codex app or visit the Codex App page.
If you are looking for the cloud-based agent from OpenAI, Codex Web, go to chatgpt.com/codex.
Quickstart
Installing and running Codex CLI
Run the following on Mac or Linux to install Codex CLI:
curl -fsSL https://chatgpt.com/codex/install.sh | sh
Run the following on Windows to install Codex CLI:
powershell -ExecutionPolicy ByPass -c "irm https://chatgpt.com/codex/install.ps1 | iex"
Codex CLI can also be installed via the following package managers:
# Install using npm
npm install -g @openai/codex
# Install using Homebrew
brew install --cask codex
Then simply run codex to get started.
You can also go to the latest GitHub Release and download the appropriate binary for your platform.
Each GitHub Release contains many executables, but in practice, you likely want one of these:
- macOS
- Apple Silicon/arm64:
codex-aarch64-apple-darwin.tar.gz - x86_64 (older Mac hardware):
codex-x86_64-apple-darwin.tar.gz
- Apple Silicon/arm64:
- Linux
- x86_64:
codex-x86_64-unknown-linux-musl.tar.gz - arm64:
codex-aarch64-unknown-linux-musl.tar.gz
- x86_64:
Each archive contains a single entry with the platform baked into the name (e.g., codex-x86_64-unknown-linux-musl), so you likely want to rename it to codex after extracting it.
Using Codex with your ChatGPT plan
Run codex and select Sign in with ChatGPT. We recommend signing into your ChatGPT account to use Codex as part of your Plus, Pro, Business, Edu, or Enterprise plan. Learn more about what's included in your ChatGPT plan.
You can also use Codex with an API key, but this requires additional setup.
Docs
This repository is licensed under the Apache-2.0 License.