Michael Bolin
9009490357
Previous to this PR, we used a hand-rolled PowerShell parser in `windows_safe_commands.rs` to take a `&str` of PowerShell script see if it is equivalent to a list of `execvp(3)` invocations, and if so, we then test each using `is_safe_powershell_command()` to determine if the overall command is safe: https://github.com/openai/codex/blob/6e6338aa876bb4258abe25b02ac6417b8ea9dff0/codex-rs/core/src/command_safety/windows_safe_commands.rs#L89-L98 Unfortunately, our PowerShell parser did not recognize `@(...)` as a special construct, so it was treated as an ordinary token. This meant that the following would erroneously be considered "safe:" ```powershell ls @(calc.exe) ``` The fix introduced in this PR is to do something comparable what we do for Bash/Zsh, which is to use a "proper" parser to derive the list of `execvp(3)` calls. For Bash/Zsh, we rely on https://crates.io/crates/tree-sitter-bash, but there does not appear to be a crate of comparable quality for parsing PowerShell statically (https://github.com/airbus-cert/tree-sitter-powershell/ is the best thing I found). Instead, in this PR, we use a PowerShell script to parse the input PowerShell program to produce the AST.
npm i -g @openai/codex
or brew install --cask codex
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
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npm install -g @openai/codex
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codex
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codex-x86_64-apple-darwin.tar.gz
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codex-x86_64-unknown-linux-musl.tar.gz - arm64:
codex-aarch64-unknown-linux-musl.tar.gz
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