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#
# Author:: Matt Wrock (<matt@mattwrock.com>)
# 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 "../file"
class Chef
module ReservedNames::Win32
class File
class VersionInfo
include Chef::ReservedNames::Win32::API::File
def initialize(file_name)
raise Errno::ENOENT, file_name unless ::File.exist?(file_name)
@file_version_info = retrieve_file_version_info(file_name)
end
# defining method for each predefined version resource string
# see https://msdn.microsoft.com/en-us/library/windows/desktop/ms647464(v=vs.85).aspx
%i{
Comments
CompanyName
FileDescription
FileVersion
InternalName
LegalCopyright
LegalTrademarks
OriginalFilename
ProductName
ProductVersion
PrivateBuild
SpecialBuild
}.each do |method|
define_method method do
begin
get_version_info_string(method.to_s)
rescue Chef::Exceptions::Win32APIError
return nil
end
end
end
private
def translation
@translation ||= begin
info_ptr = FFI::MemoryPointer.new(:pointer)
unless VerQueryValueW(@file_version_info, "\\VarFileInfo\\Translation".to_wstring, info_ptr, FFI::MemoryPointer.new(:int))
Chef::ReservedNames::Win32::Error.raise!
end
# there can potentially be multiple translations but most installers just have one
# we use the first because we use this for the version strings which are language
# agnostic. If/when we need other fields, we should we should add logic to find
# the "best" translation
trans = Translation.new(info_ptr.read_pointer)
to_hex(trans[:w_lang]) + to_hex(trans[:w_code_page])
end
end
def to_hex(integer)
integer.to_s(16).rjust(4, "0")
end
def get_version_info_string(string_key)
info_ptr = FFI::MemoryPointer.new(:pointer)
size_ptr = FFI::MemoryPointer.new(:int)
unless VerQueryValueW(@file_version_info, "\\StringFileInfo\\#{translation}\\#{string_key}".to_wstring, info_ptr, size_ptr)
Chef::ReservedNames::Win32::Error.raise!
end
info_ptr.read_pointer.read_wstring(size_ptr.read_uint)
end
end
end
end
end
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