Method: Inspec::Resources::WindowsPkg#info

Defined in:

lib/resources/package.rb

#info(package_name) ⇒ Object

# File 'lib/resources/package.rb', line 258

def info(package_name)
  search_paths = [
    'HKLM:\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall\*',
    'HKCU:\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall\*',
  ]

  # add 64 bit search paths
  if inspec.os.arch == 'x86_64'
    search_paths << 'HKLM:\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Uninstall\*'
    search_paths << 'HKCU:\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Uninstall\*'
  end

  # Find the package
  cmd = inspec.command <<-EOF.gsub(/^\s*/, '')
    Get-ItemProperty (@("#{search_paths.join('", "')}") | Where-Object { Test-Path $_ }) |
    Where-Object { $_.DisplayName -like "#{package_name}" -or $_.PSChildName -like "#{package_name}" } |
    Select-Object -Property DisplayName,DisplayVersion | ConvertTo-Json
  EOF

  # We cannot rely on `exit_status` since PowerShell always exits 0 from the
  # above command. Instead, if no package is found the output of the command
  # will be `''` so we can use that to return `{}` to match the behavior of
  # other package managers.
  return {} if cmd.stdout == ''

  begin
    package = JSON.parse(cmd.stdout)
  rescue JSON::ParserError => e
    raise Inspec::Exceptions::ResourceFailed,
          'Failed to parse JSON from PowerShell. ' \
          "Error: #{e}"
  end

  # What if we match multiple packages?  just pick the first one for now.
  package = package[0] if package.is_a?(Array)

  {
    name: package['DisplayName'],
    installed: true,
    version: package['DisplayVersion'],
    type: 'windows',
  }
end