Downloads don't work when anonymous

[paulmillar]

Attempts to download a file using dCacheView when unauthenticated (user anonymous) do not work. This has been tested with Firefox.

When attempting to view (or download) a public file, a generic error is shown. The problem stems from dCacheView using a default username and password (username 'anonymous') when attempting to access data anonymously.

This special 'anonymous' user is supported (locally) in frontend. There, the 'anonymous' user is mapped to user NOBODY internally, without forwarding the request to gPlazma.

The same support for user 'anonymous' does not exist in the WebDAV door. Therefore WebDAV will pass the credential to gPlazma. gPlazma will fail the request because there is no such user as 'anonymous'. Therefore, the GET request make by dCacheView will fail.