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# Author:: Prajakta Purohit (<prajakta@opscode.com>)
# Author:: Lamont Granquist (<lamont@opscode.com>)
#
# Copyright:: 2011, Opscode, Inc.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
#
require 'chef/provider/registry_key'
require 'chef/resource'
require 'chef/digester'
class Chef
class Resource
class RegistryKey < Chef::Resource
identity_attr :key
state_attrs :values
default_action :create
allowed_actions :create, :create_if_missing, :delete, :delete_key
# Some registry key data types may not be safely reported as json.
# Example (CHEF-5323):
#
# registry_key 'HKEY_CURRENT_USER\\ChefTest2014' do
# values [{
# :name => "ValueWithBadData",
# :type => :binary,
# :data => 255.chr * 1
# }]
# action :create
# end
#
# will raise Encoding::UndefinedConversionError: "\xFF" from ASCII-8BIT to UTF-8.
#
# To avoid sending data that cannot be nicely converted for json, we have
# the values method return "safe" data if the data type is "unsafe". Known "unsafe"
# data types are :binary, :dword, :dword-big-endian, and :qword. If other
# criteria generate data that cannot reliably be sent as json, add that criteria
# to the needs_checksum? method. When unsafe data is detected, the values method
# returns an md5 checksum of the listed data.
#
# :unscrubbed_values returns the values exactly as provided in the resource (i.e.,
# data is not checksummed, regardless of the data type/"unsafe" criteria).
#
# Future:
# If we have conflicts with other resources reporting json incompatible state, we
# may want to extend the state_attrs API with the ability to rename POST'd attrs.
#
# See lib/chef/resource_reporter.rb for more information.
attr_reader :unscrubbed_values
def initialize(name, run_context=nil)
super
@architecture = :machine
@recursive = false
@key = name
@values, @unscrubbed_values = [], []
end
def key(arg=nil)
set_or_return(
:key,
arg,
:kind_of => String
)
end
def values(arg=nil)
if not arg.nil?
if arg.is_a?(Hash)
@values = [ arg ]
elsif arg.is_a?(Array)
@values = arg
else
raise ArgumentError, "Bad type for RegistryKey resource, use Hash or Array"
end
@values.each do |v|
raise ArgumentError, "Missing name key in RegistryKey values hash" unless v.has_key?(:name)
raise ArgumentError, "Missing type key in RegistryKey values hash" unless v.has_key?(:type)
raise ArgumentError, "Missing data key in RegistryKey values hash" unless v.has_key?(:data)
v.each_key do |key|
raise ArgumentError, "Bad key #{key} in RegistryKey values hash" unless [:name,:type,:data].include?(key)
end
raise ArgumentError, "Type of name => #{v[:name]} should be string" unless v[:name].is_a?(String)
raise ArgumentError, "Type of type => #{v[:type]} should be symbol" unless v[:type].is_a?(Symbol)
end
@unscrubbed_values = @values
elsif self.instance_variable_defined?(:@values)
scrub_values(@values)
end
end
def recursive(arg=nil)
set_or_return(
:recursive,
arg,
:kind_of => [TrueClass, FalseClass]
)
end
def architecture(arg=nil)
set_or_return(
:architecture,
arg,
:kind_of => Symbol
)
end
private
def scrub_values(values)
scrubbed = []
values.each do |value|
scrubbed_value = value.dup
if needs_checksum?(scrubbed_value)
data_io = StringIO.new(scrubbed_value[:data].to_s)
scrubbed_value[:data] = Chef::Digester.instance.generate_checksum(data_io)
end
scrubbed << scrubbed_value
end
scrubbed
end
# Some data types may raise errors when sent as json. Returns true if this
# value's data may need to be converted to a checksum.
def needs_checksum?(value)
unsafe_types = [:binary, :dword, :dword_big_endian, :qword]
unsafe_types.include?(value[:type])
end
end
end
end
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