Update powerup to handle spaces properly in arguments

lib/vagrant/util/powershell.rb

@@ -1,3 +1,4 @@
+require "base64"
 require "tmpdir"
 require_relative "subprocess"
 require_relative "which"
@@ -208,18 +209,26 @@ module Vagrant
       # @return [Array<String>]
       def self.powerup_command(path, args, opts)
         Dir.mktmpdir("vagrant") do |dpath|
-          all_args = ["-NoProfile", "-NonInteractive", "-ExecutionPolicy", "Bypass", path] + args
-          arg_list = "@('" + all_args.join("', '") + "')"
+          all_args = [path] + args.flatten.map{ |a|
+            a.gsub(/^['"](.+)['"]$/, "\\1")
+          }
+          arg_list = "\"" + all_args.join("\" \"") + "\""
           stdout = File.join(dpath, "stdout.txt")
           stderr = File.join(dpath, "stderr.txt")
-          exitcode = File.join(dpath, "exitcode.txt")
 
-          script = "$sp = Start-Process -FilePath powershell -ArgumentList #{arg_list} " \
-            "-PassThru -Wait -RedirectStandardOutput '#{stdout}' -RedirectStandardError '#{stderr}' -WindowStyle Hidden; " \
-            "if($sp){ Set-Content -Path '#{exitcode}' -Value $sp.ExitCode;exit $sp.ExitCode; }else{ exit 1 }"
+          script = "& #{arg_list} ; exit $LASTEXITCODE;"
+          script_content = Base64.urlsafe_encode64(script.encode("UTF-16LE", "UTF-8"))
 
-          # escape quotes so we can nest our script within a start-process
-          script.gsub!("'", "''")
+          # Wrap so we can redirect output to read later
+          wrapper = "$p = Start-Process -FilePath powershell -ArgumentList @('-NoLogo', '-NoProfile', " \
+            "'-NonInteractive', '-ExecutionPolicy', 'Bypass', '-EncodedCommand', '#{script_content}') " \
+            "-PassThru -WindowStyle Hidden -Wait -RedirectStandardOutput '#{stdout}' -RedirectStandardError '#{stderr}'; " \
+            "if($p){ exit $p.ExitCode; }else{ exit 1 }"
+          wrapper_content = Base64.urlsafe_encode64(wrapper.encode("UTF-16LE", "UTF-8"))
+
+          powerup = "$p = Start-Process -FilePath powershell -ArgumentList @('-NoLogo', '-NoProfile', " \
+            "'-NonInteractive', '-ExecutionPolicy', 'Bypass', '-EncodedCommand', '#{wrapper_content}') " \
+            "-PassThru -WindowStyle Hidden -Wait -Verb RunAs; if($p){ exit $p.ExitCode; }else{ exit 1 }"
 
           cmd = [
             "powershell",
@@ -227,31 +236,20 @@ module Vagrant
             "-NoProfile",
             "-NonInteractive",
             "-ExecutionPolicy", "Bypass",
-            "-Command", "$p = Start-Process -FilePath powershell -ArgumentList " \
-              "@('-NoLogo', '-NoProfile', '-NonInteractive', '-ExecutionPolicy', 'Bypass', '-Command', '#{script}') " \
-              "-PassThru -Wait -WindowStyle Hidden -Verb RunAs; if($p){ exit $p.ExitCode; }else{ exit 1 }"
+            "-Command", powerup
           ]
 
           result = Subprocess.execute(*cmd.push(opts))
+          r_stdout = result.stdout
           if File.exist?(stdout)
-            r_stdout = File.read(stdout)
-          else
-            r_stdout = result.stdout
+            r_stdout += File.read(stdout)
           end
+          r_stderr = result.stderr
           if File.exist?(stderr)
-            r_stderr = File.read(stderr)
-          else
-            r_stderr = result.stderr
+            r_stderr += File.read(stderr)
           end
 
-          code = 1
-          if File.exist?(exitcode)
-            code_txt = File.read(exitcode).strip
-            if code_txt.match(/^\d+$/)
-              code = code_txt.to_i
-            end
-          end
-          Subprocess::Result.new(code, r_stdout, r_stderr)
+          Subprocess::Result.new(result.exit_code, r_stdout, r_stderr)
         end
       end