inital commit

Overlord-Client/cmd/agent/mutex/mutex.go

@@ -0,0 +1,33 @@
+package mutex
+
+import (
+	"fmt"
+	"strings"
+)
+
+const maxMutexLength = 64
+
+func sanitizeName(name string) (string, error) {
+	trimmed := strings.TrimSpace(name)
+	if trimmed == "" {
+		return "", fmt.Errorf("empty mutex name")
+	}
+
+	var builder strings.Builder
+	for _, r := range trimmed {
+		if (r >= 'a' && r <= 'z') || (r >= 'A' && r <= 'Z') || (r >= '0' && r <= '9') || r == '-' || r == '_' || r == '.' {
+			builder.WriteRune(r)
+		}
+	}
+
+	sanitized := builder.String()
+	if sanitized == "" {
+		return "", fmt.Errorf("mutex name has no valid characters")
+	}
+
+	if len(sanitized) > maxMutexLength {
+		sanitized = sanitized[:maxMutexLength]
+	}
+
+	return sanitized, nil
+}