Hardcoded "WebDAV:" xattr prefix breaks Linux compatibility

[christoph_apple@…]

Linux requires a "user." prefix when setting extended attributes but CalendarServer uses a hardcoded "WebDAV:" prefix on various occasions. At least the following files seem to be affected:

calendarserver/tools/fixcalendardata.py
calendarserver/tools/doublequotefix.py
contrib/tools/fix_calendar
twistedcaldav/test/test_upgrade.py
twistedcaldav/test/data/makelargefbset.py
twistedcaldav/upgrade.py
twistedcaldav/admin/util.py

The attached patch fixes this problem for fix_calendar but has not been tested on non-Linux platforms.

[christoph_apple@…]

fix_calendar Linux xattr Fix

[sammys@…]

Fixes xattr incompatibility in linux (twistedcaldav/upgrade.py)

[sammys@…]

I have attached a patch to fix the incompatibility when upgrading calendars from the old format to the new format (e.g calendarserver 1.2 to calendarserver 2.4).

[apm@…]

bin/xattr is affected as well.

Maybe the correct solution is to override the whole xattr class for Linux and import linuxxattr as xattr. I've attached a linuxxattr/init.py

[apm@…]

a linuxxattr/init.py class

[alexis@…]

Cc Me!

[alexis@…]

Cc Me!

[alexis@…]

Cc Me!