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YuruToot/app/validators/unreserved_username_validator.rb

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# frozen_string_literal: true
class UnreservedUsernameValidator < ActiveModel::Validator
def validate(account)
@username = account.username
return if @username.blank?
account.errors.add(:username, :reserved) if reserved_username?
end
private
def reserved_username?
pam_username_reserved? || settings_username_reserved?
end
def pam_username_reserved?
pam_controlled? && pam_reserves_username?
end
def pam_controlled?
Devise.pam_authentication && Devise.pam_controlled_service
end
def pam_reserves_username?
Rpam2.account(Devise.pam_controlled_service, @username)
end
def settings_username_reserved?
settings_has_reserved_usernames? && settings_reserves_username?
end
def settings_has_reserved_usernames?
Setting.reserved_usernames.present?
end
def settings_reserves_username?
Setting.reserved_usernames.include?(@username.downcase)
end
end