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#
# Author:: John Keiser (<jkeiser@chef.io>)
# Copyright:: Copyright (c) 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.
#
require_relative "api/process"
require_relative "api/psapi"
require_relative "api/system"
require_relative "error"
class Chef
module ReservedNames::Win32
class Handle
extend Chef::ReservedNames::Win32::API::Process
def initialize(handle)
@handle = handle
ObjectSpace.define_finalizer(self, Handle.close_handle_finalizer(handle))
end
attr_reader :handle
def self.close_handle_finalizer(handle)
proc { close_handle(handle) }
end
def self.close_handle(handle)
# According to http://msdn.microsoft.com/en-us/library/windows/desktop/ms683179(v=vs.85).aspx, it is not necessary
# to close the pseudo handle returned by the GetCurrentProcess function. The docs also say that it doesn't hurt to call
# CloseHandle on it. However, doing so from inside of Ruby always seems to produce an invalid handle error.
# The recommendation is to use GetCurrentProcess instead of the const (HANDLE)-1, to ensure we're making the correct comparison.
# Chef::ReservedNames::Win32::Security.logon_user() creates a token with a handle this is an FFI::Pointer
# and not a valid handle.
return if handle.is_a?(FFI::Pointer) || handle == GetCurrentProcess()
unless CloseHandle(handle)
Chef::ReservedNames::Win32::Error.raise!
end
end
end
end
end
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