For attachment handling there's really a need for a service that takes the file in light of the uploaded suffix and mime type, and normalizes or rejects it (in

For attachment handling there's really a need for a service that takes the file in light of the uploaded suffix and mime type, and normalizes or rejects it (in a sandbox) based on how safe for consumption it is for common apps that handle that kind of file. For normalization eg GhostScript can convert PDFs to PDF/A that contain no scripts, images can be recoded, etc. Open source project idea? Or is there something this lie this already?