Class: Chef::Provider::Package::Windows::RegistryUninstallEntry

Inherits:
Object
  • Object
show all
Defined in:
lib/chef/provider/package/windows/registry_uninstall_entry.rb

Constant Summary collapse

UNINSTALL_SUBKEY = 
'Software\Microsoft\Windows\CurrentVersion\Uninstall'.freeze

Instance Attribute Summary collapse

Class Method Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(hive, key, registry_data, uninstall_key = "UninstallString") ⇒ RegistryUninstallEntry

Returns a new instance of RegistryUninstallEntry.



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# File 'lib/chef/provider/package/windows/registry_uninstall_entry.rb', line 76

def initialize(hive, key, registry_data, uninstall_key = "UninstallString")
  @logger = Chef::Log.with_child({ subsystem: "registry_uninstall_entry" })
  logger.trace("Creating uninstall entry for #{hive}::#{key}")
  @hive = hive
  @key = key
  @data = registry_data
  @display_name = RegistryUninstallEntry.read_registry_property(registry_data, "DisplayName")
  @display_version = RegistryUninstallEntry.read_registry_property(registry_data, "DisplayVersion")
  @uninstall_string = RegistryUninstallEntry.read_registry_property(registry_data, uninstall_key)
end

Instance Attribute Details

#data ⇒ Object (readonly)

Returns the value of attribute data.



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# File 'lib/chef/provider/package/windows/registry_uninstall_entry.rb', line 92

def data
  @data
end

#display_name ⇒ Object (readonly)

Returns the value of attribute display_name.



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# File 'lib/chef/provider/package/windows/registry_uninstall_entry.rb', line 89

def display_name
  @display_name
end

#display_version ⇒ Object (readonly)

Returns the value of attribute display_version.



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# File 'lib/chef/provider/package/windows/registry_uninstall_entry.rb', line 90

def display_version
  @display_version
end

#hive ⇒ Object (readonly)

Returns the value of attribute hive.



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# File 'lib/chef/provider/package/windows/registry_uninstall_entry.rb', line 87

def hive
  @hive
end

#key ⇒ Object (readonly)

Returns the value of attribute key.



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# File 'lib/chef/provider/package/windows/registry_uninstall_entry.rb', line 88

def key
  @key
end

#logger ⇒ Object (readonly)

Returns the value of attribute logger.



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# File 'lib/chef/provider/package/windows/registry_uninstall_entry.rb', line 93

def logger
  @logger
end

#uninstall_string ⇒ Object (readonly)

Returns the value of attribute uninstall_string.



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# File 'lib/chef/provider/package/windows/registry_uninstall_entry.rb', line 91

def uninstall_string
  @uninstall_string
end

Class Method Details

.find_entries(package_name) ⇒ Object 



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# File 'lib/chef/provider/package/windows/registry_uninstall_entry.rb', line 28

def self.find_entries(package_name)
  logger.trace("Finding uninstall entries for #{package_name}")
  entries = []
  [
    [::Win32::Registry::HKEY_LOCAL_MACHINE, (::Win32::Registry::Constants::KEY_READ | 0x0100)],
    [::Win32::Registry::HKEY_LOCAL_MACHINE, (::Win32::Registry::Constants::KEY_READ | 0x0200)],
    [::Win32::Registry::HKEY_CURRENT_USER],
  ].each do |hkey|
    desired = hkey.length > 1 ? hkey[1] : ::Win32::Registry::Constants::KEY_READ
    begin
      ::Win32::Registry.open(hkey[0], UNINSTALL_SUBKEY, desired) do |reg|
        reg.each_key do |key, _wtime|
          begin
            entry = reg.open(key, desired)
            display_name = read_registry_property(entry, "DisplayName")
            if display_name.to_s.rstrip == package_name
              quiet_uninstall_string = RegistryUninstallEntry.read_registry_property(entry, "QuietUninstallString")
              entries.push(quiet_uninstall_string_key?(quiet_uninstall_string, hkey, key, entry))
            end
          rescue ::Win32::Registry::Error => ex
            logger.trace("Registry error opening key '#{key}' on node #{desired}: #{ex}")
          end
        end
      end
    rescue ::Win32::Registry::Error => ex
      logger.trace("Registry error opening hive '#{hkey[0]}' :: #{desired}: #{ex}")
    end
  end
  entries
end

.logger ⇒ Object 



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# File 'lib/chef/provider/package/windows/registry_uninstall_entry.rb', line 72

def self.logger
  Chef::Log
end

.quiet_uninstall_string_key?(quiet_uninstall_string, hkey, key, entry) ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/chef/provider/package/windows/registry_uninstall_entry.rb', line 59

def self.quiet_uninstall_string_key?(quiet_uninstall_string, hkey, key, entry)
  return RegistryUninstallEntry.new(hkey, key, entry) if quiet_uninstall_string.nil?

  RegistryUninstallEntry.new(hkey, key, entry, "QuietUninstallString")
end

.read_registry_property(data, property) ⇒ Object 



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# File 'lib/chef/provider/package/windows/registry_uninstall_entry.rb', line 65

def self.read_registry_property(data, property)
  data[property]
rescue ::Win32::Registry::Error
  logger.trace("Failure to read property '#{property}'")
  nil
end