add powershell_out mixin

2 files changed, 100 insertions, 2 deletions

diff --git a/lib/chef/mixin/powershell_out.rb b/lib/chef/mixin/powershell_out.rb
new file mode 100644
index 0000000000..8984ab2039
--- /dev/null
+++ b/lib/chef/mixin/powershell_out.rb
@@ -0,0 +1,95 @@
+#--
+# Copyright:: Copyright (c) 2015 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.
+
+class Chef
+  module Mixin
+    module PowershellOut
+      include Chef::Mixin::ShellOut
+      include Chef::Mixin::WindowsArchitectureHelper
+
+      # Run a command under powershell with the same API as shell_out.  The
+      # options hash is extended to take an "architecture" flag which
+      # can be set to :i386 or :x86_64 to force the windows architecture.
+      #
+      # @param script [String] script to run
+      # @param options [Hash] options hash
+      # @return [Mixlib::Shellout] mixlib-shellout object
+      def powershell_out(*command_args)
+        script = command_args.first
+        options = command_args.last.is_a?(Hash) ? command_args.last : nil
+
+        run_command_with_os_architecture(script, options)
+      end
+
+      # Run a command under powershell with the same API as shell_out!
+      # (raises exceptions on errors)
+      #
+      # @param script [String] script to run
+      # @param options [Hash] options hash
+      # @return [Mixlib::Shellout] mixlib-shellout object
+      def powershell_out!(*command_args)
+        cmd = powershell_out(*command_args)
+        cmd.error!
+        cmd
+      end
+
+      private
+
+      # Helper function to run shell_out and wrap it with the correct
+      # flags to possibly disable WOW64 redirection (which we often need
+      # because chef-client runs as a 32-bit app on 64-bit windows).
+      #
+      # @param script [String] script to run
+      # @param options [Hash] options hash
+      # @return [Mixlib::Shellout] mixlib-shellout object
+      def run_command_with_os_architecture(script, options)
+        options ||= {}
+        options = options.dup
+        arch = options.delete(:architecture)
+
+        with_os_architecture(nil, architecture: arch) do
+          shell_out(
+            build_powershell_command(script),
+            options
+          )
+        end
+      end
+
+      # Helper to build a powershell command around the script to run.
+      #
+      # @param script [String] script to run
+      # @retrurn [String] powershell command to execute
+      def build_powershell_command(script)
+        flags = [
+          # Hides the copyright banner at startup.
+          "-NoLogo",
+          # Does not present an interactive prompt to the user.
+          "-NonInteractive",
+          # Does not load the Windows PowerShell profile.
+          "-NoProfile",
+          # always set the ExecutionPolicy flag
+          # see http://technet.microsoft.com/en-us/library/ee176961.aspx
+          "-ExecutionPolicy RemoteSigned",
+          # Powershell will hang if STDIN is redirected
+          # http://connect.microsoft.com/PowerShell/feedback/details/572313/powershell-exe-can-hang-if-stdin-is-redirected
+          "-InputFormat None"
+        ]
+
+        "powershell.exe #{flags.join(' ')} -Command \"#{script}\""
+      end
+    end
+  end
+end
diff --git a/lib/chef/mixin/windows_architecture_helper.rb b/lib/chef/mixin/windows_architecture_helper.rb
index a0ac34f627..c5f3e1bd79 100644
--- a/lib/chef/mixin/windows_architecture_helper.rb
+++ b/lib/chef/mixin/windows_architecture_helper.rb
@@ -42,7 +42,7 @@ class Chef
           is_i386_process_on_x86_64_windows?
       end
 
-      def with_os_architecture(node)
+      def with_os_architecture(node, architecture: nil)
         node ||= begin
           os_arch = ENV['PROCESSOR_ARCHITEW6432'] ||
                     ENV['PROCESSOR_ARCHITECTURE']
@@ -51,9 +51,12 @@ class Chef
             n[:kernel][:machine] = os_arch == 'AMD64' ? :x86_64 : :i386
           end
         end
+
+        architecture ||= node_windows_architecture(node)
+
         wow64_redirection_state = nil
 
-        if wow64_architecture_override_required?(node, node_windows_architecture(node))
+        if wow64_architecture_override_required?(node, architecture)
           wow64_redirection_state = disable_wow64_file_redirection(node)
         end