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# Created by Luke Kanies on 2006-12-12.
# Copyright (c) 2006. All rights reserved.
require 'puppet'
Puppet::Type.newtype(:resources) do
@doc = "This is a metatype that can manage other resource types. Any
metaparams specified here will be passed on to any generated resources,
so you can purge umanaged resources but set ``noop`` to true so the
purging is only logged and does not actually happen."
newparam(:name) do
desc "The name of the type to be managed."
validate do |name|
raise ArgumentError, "Could not find resource type '#{name}'" unless Puppet::Type.type(name)
end
munge { |v| v.to_s }
end
newparam(:purge, :boolean => true) do
desc "Purge unmanaged resources. This will delete any resource
that is not specified in your configuration
and is not required by any specified resources."
newvalues(:true, :false)
validate do |value|
if [:true, true, "true"].include?(value)
unless @resource.resource_type.respond_to?(:instances)
raise ArgumentError, "Purging resources of type #{@resource[:name]} is not supported, since they cannot be queried from the system"
end
raise ArgumentError, "Purging is only supported on types that accept 'ensure'" unless @resource.resource_type.validproperty?(:ensure)
end
end
end
newparam(:unless_system_user) do
desc "This keeps system users from being purged. By default, it
does not purge users whose UIDs are less than or equal to 500, but you can specify
a different UID as the inclusive limit."
newvalues(:true, :false, /^\d+$/)
munge do |value|
case value
when /^\d+/
Integer(value)
when :true, true
500
when :false, false
false
when Integer; value
else
raise ArgumentError, "Invalid value #{value.inspect}"
end
end
defaultto {
if @resource[:name] == "user"
500
else
nil
end
}
end
def check(resource)
@checkmethod = "#{self[:name]}_check" unless defined?(@checkmethod)
@hascheck = respond_to?(@checkmethod) unless defined?(@hascheck)
if @hascheck
return send(@checkmethod, resource)
else
return true
end
end
def able_to_ensure_absent?(resource)
resource[:ensure] = :absent
rescue ArgumentError, Puppet::Error => detail
err "The 'ensure' attribute on #{self[:name]} resources does not accept 'absent' as a value"
false
end
# Generate any new resources we need to manage. This is pretty hackish
# right now, because it only supports purging.
def generate
return [] unless self.purge?
resource_type.instances.
reject { |r| catalog.resource_refs.include? r.ref }.
select { |r| check(r) }.
select { |r| r.class.validproperty?(:ensure) }.
select { |r| able_to_ensure_absent?(r) }.
each { |resource|
@parameters.each do |name, param|
resource[name] = param.value if param.metaparam?
end
# Mark that we're purging, so transactions can handle relationships
# correctly
resource.purging
}
end
def resource_type
unless defined?(@resource_type)
unless type = Puppet::Type.type(self[:name])
raise Puppet::DevError, "Could not find resource type"
end
@resource_type = type
end
@resource_type
end
# Make sure we don't purge users below a certain uid, if the check
# is enabled.
def user_check(resource)
return true unless self[:name] == "user"
return true unless self[:unless_system_user]
resource[:audit] = :uid
current_values = resource.retrieve_resource
return false if system_users().include?(resource[:name])
current_values[resource.property(:uid)] > self[:unless_system_user]
end
def system_users
%w{root nobody bin noaccess daemon sys}
end
end
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