Is there a multi-user webdav server available for linux?

I'm looking to completely decommission my SMBA service and replace it with a WebDav service. All the google searches so far have pointed me to using Apache / Webdav. This is close to what I need but as far as I read it requires Apache to have access to my user's files and worse; if it creates a file the new file will be owned by Apache (not the user). ***Note that having files with the correct Unix ownership and permissions is a requirement as some users have direct SSH access.*** So I'm quite simply looking for a way to either make Apache / Webdav work "correctly" with multi-users (that is ***change unix user to the logged in user before attempting to serve the file***) or find a complete alternative to Apache / Webdav. So far searches haven't turned anything up.