Merge pull request #3847 from mitchellh/command-line-too-long-fix-for-winrm

guests/windows: fix #3816 long arg list

plugins/communicators/winrm/communicator.rb

@@ -69,12 +69,8 @@ module VagrantPlugins
         opts[:good_exit] = Array(opts[:good_exit])
 
         if opts[:elevated]
-          path = File.expand_path("../scripts/elevated_shell.ps1", __FILE__)
-          command = Vagrant::Util::TemplateRenderer.render(path, options: {
-            username: shell.username,
-            password: shell.password,
-            command: command,
-          })
+          guest_script_path = create_elevated_shell_script(command)
+          command = "powershell -executionpolicy bypass -file #{guest_script_path}"
         end
 
         output = shell.send(opts[:shell], command, &block)
@@ -120,6 +116,33 @@ module VagrantPlugins
         )
       end
 
+      # Creates and uploads a PowerShell script which wraps the specified
+      # command in a scheduled task. The scheduled task allows commands to
+      # run on the guest as a true local admin without any of the restrictions
+      # that WinRM puts in place.
+      #
+      # @return The path to elevated_shell.ps1 on the guest 
+      def create_elevated_shell_script(command)
+        path = File.expand_path("../scripts/elevated_shell.ps1", __FILE__)
+        script = Vagrant::Util::TemplateRenderer.render(path, options: {
+          username: shell.username,
+          password: shell.password,
+          command: command,
+        })
+        guest_script_path = "c:/tmp/vagrant-elevated-shell.ps1"
+        file = Tempfile.new(["vagrant-elevated-shell", "ps1"])
+        begin
+          file.write(script)
+          file.fsync
+          file.close
+          upload(file.path, guest_script_path)
+        ensure
+          file.close
+          file.unlink
+        end
+        guest_script_path
+      end
+
       # Handles the raw WinRM shell result and converts it to a
       # standard Vagrant communicator result
       def execution_output(output, opts)

test/unit/plugins/communicators/winrm/communicator_test.rb

@@ -48,11 +48,9 @@ describe VagrantPlugins::CommunicatorWinRM::Communicator do
     end
 
     it "wraps command in elevated shell script when elevated is true" do
+      expect(shell).to receive(:upload).with(kind_of(String), "c:/tmp/vagrant-elevated-shell.ps1")
       expect(shell).to receive(:powershell) do |cmd|
-        expect(cmd).to include("$command = \"dir\"")
-        expect(cmd).to include("$user = 'vagrant'")
-        expect(cmd).to include("$password = 'password'")
-        expect(cmd).to include("New-Object -ComObject \"Schedule.Service\"")
+        expect(cmd).to eq("powershell -executionpolicy bypass -file c:/tmp/vagrant-elevated-shell.ps1")
       end.and_return({ exitcode: 0 })
       expect(subject.execute("dir", { elevated: true })).to eq(0)
     end