1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
|
#
# Author:: Adam Edwards (<adamed@chef.io>)
# Copyright:: Copyright 2013-2016, 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.
#
require "chef/exceptions"
require "chef/mixin/wide_string"
require "chef/platform/query_helpers"
require "chef/win32/error" if Chef::Platform.windows?
require "chef/win32/api/system" if Chef::Platform.windows?
require "chef/win32/api/unicode" if Chef::Platform.windows?
class Chef
module Mixin
module WindowsEnvHelper
include Chef::Mixin::WideString
if Chef::Platform.windows?
include Chef::ReservedNames::Win32::API::System
end
#see: http://msdn.microsoft.com/en-us/library/ms682653%28VS.85%29.aspx
HWND_BROADCAST = 0xffff
WM_SETTINGCHANGE = 0x001A
SMTO_BLOCK = 0x0001
SMTO_ABORTIFHUNG = 0x0002
SMTO_NOTIMEOUTIFNOTHUNG = 0x0008
def broadcast_env_change
flags = SMTO_BLOCK | SMTO_ABORTIFHUNG | SMTO_NOTIMEOUTIFNOTHUNG
# for why two calls, see:
# http://stackoverflow.com/questions/4968373/why-doesnt-sendmessagetimeout-update-the-environment-variables
if SendMessageTimeoutA(HWND_BROADCAST, WM_SETTINGCHANGE, 0, FFI::MemoryPointer.from_string("Environment").address, flags, 5000, nil) == 0
Chef::ReservedNames::Win32::Error.raise!
end
if SendMessageTimeoutW(HWND_BROADCAST, WM_SETTINGCHANGE, 0, FFI::MemoryPointer.from_string(
utf8_to_wide("Environment")
).address, flags, 5000, nil) == 0
Chef::ReservedNames::Win32::Error.raise!
end
end
def expand_path(path)
# http://msdn.microsoft.com/en-us/library/windows/desktop/ms724265%28v=vs.85%29.aspx
# Max size of env block on windows is 32k
buf = 0.chr * 32 * 1024
if ExpandEnvironmentStringsA(path, buf, buf.length) == 0
Chef::ReservedNames::Win32::Error.raise!
end
buf.strip
end
end
end
end
|
