Resolve "x-set-fingerprint sets empty fingerprint-value in subscription if there is an accidental line-break between E-Mail and Fingerprint"
Closes #360 (closed)
Check for a valid fingerprint as argument and do not accept an empty
fingerprint. This will not anymore allow to unset a fingerprint
SET-FINGERPRINT. This functionality will be superseeded
by another keyword.
As part of that fix, wie centralize checking for a valid fingerpint and constrain the check to be either 32 (v3) or 40 (v4) characters long.
Additionally, we introduce the
UNSET-FINGERPRINT keyword. Using the new introduced keyword an admin can now remove the linked
fingerprint from a subscription. A subscription can only remove
the fingerprint of themselves.
To unset their own fingerprint admins must additionally pass the
Requires update of docs