Experiment with automatically updating Windows Update for w2k8r2/win7

Success criteria is that the box no longer prompts for Windows update to be
updated when launching Windows Update for the first time.
Needs to be in Autounattend.xml rather than in scripts as the install requires
a tty/message pump.

Author: Mischa Taylor

eval-win2008r2-datacenter.json

@@ -29,6 +29,7 @@
         "floppy/passwordchange.bat",
         "floppy/openssh.bat",
         "floppy/disablewinupdate.bat",
+        "floppy/upgrade-wua.bat",
         "floppy/zz-start-sshd.cmd"
       ],
       "tools_upload_flavor": "windows",
@@ -61,6 +62,7 @@
         "floppy/passwordchange.bat",
         "floppy/openssh.bat",
         "floppy/disablewinupdate.bat",
+        "floppy/upgrade-wua.bat",
         "floppy/zz-start-sshd.cmd",
         "floppy/oracle-cert.cer"
       ],
@@ -83,6 +85,7 @@
       ],
       "execute_command": "{{.Vars}} cmd /c C:/Windows/Temp/script.bat",
       "scripts": [
+        "script/update.bat",
         "script/vagrant.bat",
         "script/cmtool.bat",
         "script/vmtool.bat",

eval-win7x64-enterprise.json

@@ -31,6 +31,7 @@
         "floppy/networkprompt.bat",
         "floppy/disablewinupdate.bat",
         "floppy/openssh.bat",
+        "floppy/upgrade-wua.bat",
         "floppy/zz-start-sshd.cmd"
       ],
       "tools_upload_flavor": "windows",
@@ -67,6 +68,7 @@
         "floppy/networkprompt.bat",
         "floppy/disablewinupdate.bat",
         "floppy/openssh.bat",
+        "floppy/upgrade-wua.bat",
         "floppy/zz-start-sshd.cmd",
         "floppy/oracle-cert.cer"
       ],
@@ -89,6 +91,7 @@
       ],
       "execute_command": "{{.Vars}} cmd /c C:/Windows/Temp/script.bat",
       "scripts": [
+        "script/update.bat",
         "script/vagrant.bat",
         "script/cmtool.bat",
         "script/vmtool.bat",

floppy/upgrade-wua.bat

@@ -0,0 +1,44 @@
+@setlocal EnableDelayedExpansion EnableExtensions
+@for %%i in (%~dp0\_packer_config*.cmd) do @call "%%~i"
+@if defined PACKER_DEBUG (@echo on) else (@echo off)
+
+title Upgrading Windows Upgrade Agent.  Please wait...
+
+if not defined WUA_64_URL set WUA_64_URL=http://download.windowsupdate.com/windowsupdate/redist/standalone/7.6.7600.320/WindowsUpdateAgent-7.6-x64.exe
+if not defined WUA_32_URL set WUA_32_URL=http://download.windowsupdate.com/windowsupdate/redist/standalone/7.6.7600.320/WindowsUpdateAgent-7.6-x86.exe
+
+if defined ProgramFiles(x86) (
+    set WUA_URL=%WUA_64_URL%
+) else (
+    set WUA_URL=%WUA_32_URL%
+)
+
+for %%i in (%WUA_URL%) do set WUA_EXE=%%~nxi
+set WUA_DIR=%TEMP%\wua
+set WUA_PATH=%WUA_DIR%\%WUA_EXE%
+
+echo ==^> Creating "%WUA_DIR%"
+mkdir "%WUA_DIR%"
+
+if exist "%SystemRoot%\_download.cmd" (
+    call "%SystemRoot%\_download.cmd" "%WUA_URL%" "%WUA_PATH%"
+) else (
+    echo ==^> Downloading "%WUA_URL%" to "%WUA_PATH%"
+    powershell -Command "(New-Object System.Net.WebClient).DownloadFile('%WUA_URL%', '%WUA_PATH%')" <NUL
+)
+if not exist "%WUA_PATH%" goto exit1
+
+echo ==^> Upgrading Windows Update Agent
+"%WUA_PATH%" /quiet
+
+echo ==^> Removing "%WUA_DIR%"
+rmdir /q /s "%WUA_DIR%"
+
+:exit0
+ver>nul
+goto :exit
+
+:exit1
+verify other 2>nul
+
+:exit