## Summary This fixes BUGB-17567 by preventing non-Windows command safety classification from invoking the Windows PowerShell safelist/parser path. Previously, `is_known_safe_command` called the Windows PowerShell classifier on every platform. That classifier recognizes `pwsh`/`powershell` by basename and delegates script parsing to the PowerShell AST parser. The parser starts the supplied executable, so on macOS/Linux a repository-controlled `pwsh` path could execute during safety parsing before the normal sandboxed command execution path. The change gates the Windows PowerShell classifier and module behind `#[cfg(windows)]`. On macOS/Linux, PowerShell-looking commands are no longer auto-approved by the Windows classifier and instead fall through to the normal non-Windows safe-command logic. ## Validation - `/private/tmp/codex-tools/bin/just fmt` - `PATH=/private/tmp/codex-tools/bin:$PATH /private/tmp/codex-tools/bin/just test -p codex-shell-command` The focused test run passed 135 tests with 0 skipped and completed the crate bench-smoke step. ## Notes This PR is scoped to the BUGB-17567 macOS/Linux path. Windows still uses the PowerShell classifier; a separate hardening follow-up should ensure Windows safety parsing only executes a trusted PowerShell parser binary and does not spawn the command's `argv[0]` when that path may be repository-controlled.
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.
