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#
# Author:: Doug MacEachern (<dougm@vmware.com>)
# Copyright:: Copyright 2010-2016, VMware, Inc.
# License:: Apache License, Version 2.0
#
# 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_relative "../provider"
require_relative "../resource/windows_env"
require_relative "../mixin/windows_env_helper"
class Chef
class Provider
class WindowsEnv < Chef::Provider
include Chef::Mixin::WindowsEnvHelper
attr_accessor :key_exists
provides :env
provides :windows_env
def whyrun_supported?
false
end
def initialize(new_resource, run_context)
super
@key_exists = true
end
def load_current_resource
@current_resource = Chef::Resource::WindowsEnv.new(new_resource.name)
current_resource.key_name(new_resource.key_name)
if env_key_exists(new_resource.key_name)
current_resource.value(env_value(new_resource.key_name))
else
@key_exists = false
logger.trace("#{new_resource} key does not exist")
end
current_resource
end
def env_key_exists(key_name)
env_value(key_name) ? true : false
end
# Check to see if value needs any changes
#
# ==== Returns
# <true>:: If a change is required
# <false>:: If a change is not required
def requires_modify_or_create?
if new_resource.delim
# e.g. check for existing value within PATH
new_values.inject(0) do |index, val|
next_index = current_values.find_index val
return true if next_index.nil? || next_index < index
next_index
end
false
else
new_resource.value != current_resource.value
end
end
alias_method :compare_value, :requires_modify_or_create?
def action_create
if @key_exists
if requires_modify_or_create?
modify_env
logger.info("#{new_resource} altered")
new_resource.updated_by_last_action(true)
end
else
create_env
logger.info("#{new_resource} created")
new_resource.updated_by_last_action(true)
end
end
# e.g. delete a PATH element
#
# ==== Returns
# <true>:: If we handled the element case and caller should not delete the key
# <false>:: Caller should delete the key, either no :delim was specific or value was empty
# after we removed the element.
def delete_element
return false unless new_resource.delim # no delim: delete the key
needs_delete = new_values.any? { |v| current_values.include?(v) }
if !needs_delete
logger.trace("#{new_resource} element '#{new_resource.value}' does not exist")
return true # do not delete the key
else
new_value =
current_values.select do |item|
not new_values.include?(item)
end.join(new_resource.delim)
if new_value.empty?
return false # nothing left here, delete the key
else
old_value = new_resource.value(new_value)
create_env
logger.trace("#{new_resource} deleted #{old_value} element")
new_resource.updated_by_last_action(true)
return true # we removed the element and updated; do not delete the key
end
end
end
def action_delete
if ( ENV[new_resource.key_name] || @key_exists ) && !delete_element
delete_env
logger.info("#{new_resource} deleted")
new_resource.updated_by_last_action(true)
end
end
def action_modify
if @key_exists
if requires_modify_or_create?
modify_env
logger.info("#{new_resource} modified")
new_resource.updated_by_last_action(true)
end
else
raise Chef::Exceptions::WindowsEnv, "Cannot modify #{new_resource} - key does not exist!"
end
end
def create_env
obj = env_obj(@new_resource.key_name)
unless obj
obj = WIN32OLE.connect("winmgmts://").get("Win32_Environment").spawninstance_
obj.name = @new_resource.key_name
obj.username = new_resource.user
end
obj.variablevalue = @new_resource.value
obj.put_
value = @new_resource.value
value = expand_path(value) if @new_resource.key_name.casecmp("PATH") == 0
ENV[@new_resource.key_name] = value
broadcast_env_change
end
def delete_env
obj = env_obj(@new_resource.key_name)
if obj
obj.delete_
broadcast_env_change
end
if ENV[@new_resource.key_name]
ENV.delete(@new_resource.key_name)
end
end
def modify_env
if new_resource.delim
new_resource.value((new_values + current_values).uniq.join(new_resource.delim))
end
create_env
end
# Returns the current values to split by delimiter
def current_values
@current_values ||= current_resource.value.split(new_resource.delim)
end
# Returns the new values to split by delimiter
def new_values
@new_values ||= new_resource.value.split(new_resource.delim)
end
def env_value(key_name)
obj = env_obj(key_name)
obj.variablevalue if obj
end
def env_obj(key_name)
return @env_obj if @env_obj
wmi = WmiLite::Wmi.new
# Note that by design this query is case insensitive with regard to key_name
environment_variables = wmi.query("select * from Win32_Environment where name = '#{key_name}'")
if environment_variables && environment_variables.length > 0
environment_variables.each do |env|
@env_obj = env.wmi_ole_object
return @env_obj if @env_obj.username.split('\\').last.casecmp(new_resource.user) == 0
end
end
@env_obj = nil
end
end
end
end
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