Enforce the output limit on subprocess stdout copies

internal/codex/worker.go

@@ -20,16 +20,16 @@ const executable = "/opt/codex/node_modules/.bin/codex"
 var errOutputLimit = errors.New("Codex output limit exceeded")
 
 type outputBuffer struct {
-	bytes.Buffer
+	buffer   bytes.Buffer
 	exceeded bool
 }
 
 func (b *outputBuffer) Write(p []byte) (int, error) {
-	if len(p) > maxOutput-b.Len() {
+	if len(p) > maxOutput-b.buffer.Len() {
 		b.exceeded = true
 		return 0, errOutputLimit
 	}
-	return b.Buffer.Write(p)
+	return b.buffer.Write(p)
 }
 
 func ServeWorker(socket string) error {
@@ -97,7 +97,7 @@ func execute(w http.ResponseWriter, r *http.Request, prompt string) {
 	default:
 		var result string
 		var completed bool
-		for _, line := range bytes.Split(bytes.TrimSpace(output.Bytes()), []byte("\n")) {
+		for _, line := range bytes.Split(bytes.TrimSpace(output.buffer.Bytes()), []byte("\n")) {
 			var event struct {
 				Type string `json:"type"`
 				Item struct {