Struct CodexTarget 

pub struct CodexTarget;

Trait Implementations

impl Target for CodexTarget

fn install(&self, home: &Path) -> Result<InstallOutcome, String>

Adds whichever of EVENTS is missing, so a user who installed the PreToolUse hook before PermissionRequest support gets the second entry from a re-run of --setup.

fn hook_format_for(&self, stdin: &str) -> Option<&dyn HookFormat>

Codex names the event in hook_event_name, which it sets itself (the agent cannot reach it). Anything that is not a PermissionRequest, an envelope without the field included, keeps the PreToolUse answer this target has always given.

fn name(&self) -> &'static str

fn display_name(&self) -> &'static str

fn detect_paths(&self, home: &Path) -> Vec<PathBuf>

fn hook_format(&self) -> Option<&dyn HookFormat>

fn hook_formats(&self) -> Vec<&dyn HookFormat>

Every format hook_format_for can return, so the contract guards that need no envelope walk all of them and a second event’s format cannot ship unchecked. The foreign-tool guard is driven by sample_envelope and reaches only the format that envelope routes to; Codex’s PermissionRequest tool filter has its own test in codex.rs.

fn shell_tool_name(&self) -> &'static str

The harness’s SHELL tool — the only tool this hook should decide about. Droid’s is Execute, Gemini’s run_shell_command; most are Bash. Defaults to Bash, the common case.