Fix Windows sandbox setup helper materialization

codex-rs/windows-sandbox-rs/src/helper_materialization.rs

@@ -22,18 +22,21 @@ pub(crate) const RESOURCES_DIRNAME: &str = "codex-resources";
 #[derive(Clone, Copy, Debug, Eq, Hash, PartialEq)]
 pub(crate) enum HelperExecutable {
     CommandRunner,
+    Setup,
 }
 
 impl HelperExecutable {
     fn file_name(self) -> &'static str {
         match self {
             Self::CommandRunner => "codex-command-runner.exe",
+            Self::Setup => "codex-windows-sandbox-setup.exe",
         }
     }
 
     fn label(self) -> &'static str {
         match self {
             Self::CommandRunner => "command-runner",
+            Self::Setup => "setup-helper",
         }
     }
 }
@@ -559,4 +562,11 @@ mod tests {
 
         assert_eq!(file_name, "codex-command-runner-test-suffix.exe");
     }
+
+    #[test]
+    fn setup_helper_materialized_file_name_adds_suffix_before_extension() {
+        let file_name = materialized_file_name(HelperExecutable::Setup, "test-suffix");
+
+        assert_eq!(file_name, "codex-windows-sandbox-setup-test-suffix.exe");
+    }
 }

codex-rs/windows-sandbox-rs/src/setup.rs

@@ -12,8 +12,10 @@ use std::process::Stdio;
 
 use crate::allow::AllowDenyPaths;
 use crate::allow::compute_allow_paths_for_permissions;
+use crate::helper_materialization::HelperExecutable;
 use crate::helper_materialization::bundled_executable_path_for_exe;
 use crate::helper_materialization::helper_bin_dir;
+use crate::helper_materialization::resolve_helper_for_launch;
 use crate::logging::log_note;
 use crate::path_normalization::canonical_path_key;
 use crate::path_normalization::canonicalize_path;
@@ -207,7 +209,8 @@ fn run_setup_refresh_inner(
     };
     let json = serde_json::to_vec(&payload)?;
     let b64 = BASE64_STANDARD.encode(json);
-    let exe = find_setup_exe();
+    let log_dir = sandbox_dir(request.codex_home);
+    let exe = find_setup_exe(request.codex_home, Some(&log_dir));
     // Refresh should never request elevation; ensure verb isn't set and we don't trigger UAC.
     let mut cmd = Command::new(&exe);
     cmd.arg(&b64).stdout(Stdio::null()).stderr(Stdio::null());
@@ -219,14 +222,14 @@ fn run_setup_refresh_inner(
             cwd.display(),
             b64.len()
         ),
-        Some(&sandbox_dir(request.codex_home)),
+        Some(&log_dir),
     );
     let status = cmd
         .status()
         .map_err(|e| {
             log_note(
                 &format!("setup refresh: failed to spawn {}: {e}", exe.display()),
-                Some(&sandbox_dir(request.codex_home)),
+                Some(&log_dir),
             );
             e
         })
@@ -234,7 +237,7 @@ fn run_setup_refresh_inner(
     if !status.success() {
         log_note(
             &format!("setup refresh: exited with status {status:?}"),
-            Some(&sandbox_dir(request.codex_home)),
+            Some(&log_dir),
         );
         return Err(anyhow!("setup refresh failed with status {status}"));
     }
@@ -630,13 +633,8 @@ fn quote_arg(arg: &str) -> String {
     out
 }
 
-fn find_setup_exe() -> PathBuf {
-    if let Ok(exe) = std::env::current_exe()
-        && let Some(setup_exe) = find_setup_exe_for_current_exe(&exe)
-    {
-        return setup_exe;
-    }
-    PathBuf::from(SETUP_EXE_FILENAME)
+fn find_setup_exe(codex_home: &Path, log_dir: Option<&Path>) -> PathBuf {
+    resolve_helper_for_launch(HelperExecutable::Setup, codex_home, log_dir)
 }
 
 fn find_setup_exe_for_current_exe(exe: &Path) -> Option<PathBuf> {
@@ -673,7 +671,8 @@ fn run_setup_exe(
     use windows_sys::Win32::UI::Shell::SEE_MASK_NOCLOSEPROCESS;
     use windows_sys::Win32::UI::Shell::SHELLEXECUTEINFOW;
     use windows_sys::Win32::UI::Shell::ShellExecuteExW;
-    let exe = find_setup_exe();
+    let sandbox_log_dir = sandbox_dir(codex_home);
+    let exe = find_setup_exe(codex_home, Some(&sandbox_log_dir));
     let payload_json = serde_json::to_string(payload).map_err(|err| {
         failure(
             SetupErrorCode::OrchestratorPayloadSerializeFailed,