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#
# Author:: James Gartrell (<jgartrel@gmail.com>)
# Copyright:: Copyright (c) 2009-2016 Chef Software, 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.
#
Ohai.plugin(:Filesystem) do
provides "filesystem"
# Volume encryption or decryption status
#
# @see https://docs.microsoft.com/en-us/windows/desktop/SecProv/getconversionstatus-win32-encryptablevolume#parameters
#
CONVERSION_STATUS ||= %w{FullyDecrypted FullyEncrypted EncryptionInProgress
DecryptionInProgress EncryptionPaused DecryptionPaused}.freeze
# Returns a Mash loaded with logical details
#
# Uses Win32_LogicalDisk and logical_properties to return encryption details of volumes.
#
# Returns an empty Mash in case of any WMI exception.
#
# @see https://docs.microsoft.com/en-us/windows/desktop/CIMWin32Prov/win32-logicaldisk
#
# @return [Mash]
#
def logical_info
wmi = WmiLite::Wmi.new("Root\\CIMV2")
# Note: we should really be parsing Win32_Volume and Win32_Mapped drive.
disks = wmi.instances_of("Win32_LogicalDisk")
logical_properties(disks)
rescue WmiLite::WmiException
Ohai::Log.debug("Unable to access Win32_LogicalDisk. Skipping logical details")
Mash.new
end
# Returns a Mash loaded with encryption details
#
# Uses Win32_EncryptableVolume and encryption_properties to return encryption details of volumes.
#
# Returns an empty Mash in case of any WMI exception.
#
# @note We are fetching Encryption Status only as of now
#
# @see https://msdn.microsoft.com/en-us/library/windows/desktop/aa376483(v=vs.85).aspx
#
# @return [Mash]
#
def encryptable_info
wmi = WmiLite::Wmi.new("Root\\CIMV2\\Security\\MicrosoftVolumeEncryption")
disks = wmi.instances_of("Win32_EncryptableVolume")
encryption_properties(disks)
rescue WmiLite::WmiException
Ohai::Log.debug("Unable to access Win32_EncryptableVolume. Skipping encryptable details")
Mash.new
end
# Refines and calculates logical properties out of given instances
#
# @param [WmiLite::Wmi::Instance] disks
#
# @return [Mash] Each drive containing following properties:
#
# * :kb_size (Integer)
# * :kb_available (Integer)
# * :kb_used (Integer)
# * :percent_used (Integer)
# * :mount (String)
# * :fs_type (String)
# * :volume_name (String)
#
def logical_properties(disks)
properties = Mash.new
disks.each do |disk|
property = Mash.new
drive = disk["deviceid"]
property[:kb_size] = disk["size"].to_i / 1000
property[:kb_available] = disk["freespace"].to_i / 1000
property[:kb_used] = property[:kb_size] - property[:kb_available]
property[:percent_used] = (property[:kb_size] == 0 ? 0 : (property[:kb_used] * 100 / property[:kb_size]))
property[:mount] = disk["name"]
property[:fs_type] = disk["filesystem"].to_s.downcase
property[:volume_name] = disk["volumename"].to_s.downcase
properties[drive] = property
end
properties
end
# Refines and calculates encryption properties out of given instances
#
# @param [WmiLite::Wmi::Instance] disks
#
# @return [Mash] Each drive containing following properties:
#
# * :encryption_status (String)
#
def encryption_properties(disks)
properties = Mash.new
disks.each do |disk|
drive = disk["driveletter"]
property = Mash.new
property[:encryption_status] = disk["conversionstatus"] ? CONVERSION_STATUS[disk["conversionstatus"]] : ""
properties[drive] = property
end
properties
end
# Merges all the various properties of filesystems
#
# @param [Array<Mash>] disks_info
# Array of the Mashes containing disk properties
#
# @return [Mash]
#
def merge_info(disks_info)
fs = Mash.new
disks_info.each do |info|
info.each do |disk, data|
if fs[disk]
fs[disk].merge!(data)
else
fs[disk] = data.dup
end
end
end
fs
end
collect_data(:windows) do
require "wmi-lite/wmi"
filesystem merge_info([logical_info,
encryptable_info])
end
end
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