Use remote metadata extraction
|Priority:||Should have||Due date:|
Currently, we have to download all files to the server harddisk to get metadata, esp. the SHA-1 hash and the mimetype. This metadata extraction should be delegatable to services.
Another example for this would be to have a script on a remote server that has direct access to the files on the local disk.
We need to define how to return an unavailable property, like a hash, so that further services can be queried for this data.