fixup autoupdate for new build system

src/platform/dev/autoupdate.py

 # Copyright (c) 2009 The Chromium OS Authors. All rights reserved.
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 
 from buildutil import BuildObject
 from xml.dom import minidom
 
 import os
 import web
 
@@ skipping 23 matching lines @@
     payload = """<?xml version="1.0" encoding="UTF-8"?>
       <gupdate xmlns="http://www.google.com/update2/response" protocol="2.0">
         <app appid="{%s}" status="ok">
           <ping status="ok"/>
           <updatecheck status="noupdate"/>
         </app>
       </gupdate>
     """
     return payload % self.app_id
 
-  def GetLatestImagePath(self):
-    cmd = "%s/get_latest_image.sh" % self.scripts_dir
+  def GetLatestImagePath(self, board_id):
+    cmd = "%s/get_latest_image.sh --board %s" % (self.scripts_dir, board_id)
     return os.popen(cmd).read().strip()
 
   def GetLatestVersion(self, latest_image_path):
     latest_version = latest_image_path.split('/')[-1]
 
     # Removes the portage build prefix.
     latest_version = latest_version.lstrip("g-")
     return latest_version.split('-')[0]
 
   def CanUpdate(self, client_version, latest_version):
@@ skipping 33 matching lines @@
   def GetHash(self, update_path):
     cmd = "cat %s | openssl sha1 -binary | openssl base64 | tr \'\\n\' \' \';" % update_path
     web.debug(cmd)
     return os.popen(cmd).read()
 
   def HandleUpdatePing(self, data):
     update_dom = minidom.parseString(data)
     root = update_dom.firstChild
     query = root.getElementsByTagName("o:app")[0]
     client_version = query.attributes['version'].value
-    latest_image_path = self.GetLatestImagePath();
+    board_id = query.attributes['board'].value
+    latest_image_path = self.GetLatestImagePath(board_id);
     latest_version = self.GetLatestVersion(latest_image_path);
     if client_version != "ForcedUpdate" and not self.CanUpdate(client_version, latest_version):
       web.debug("no update")
       return self.GetNoUpdatePayload()
 
     web.debug("update found %s " % latest_version)
     ok = self.BuildUpdateImage(latest_image_path)
     if ok != True:
       web.debug("Failed to build an update image")
       return self.GetNoUpdatePayload()
 
     hash = self.GetHash("%s/update.gz" % self.static_dir)
     size = self.GetSize("%s/update.gz" % self.static_dir)
     hostname = web.ctx.host
     url = "http://%s/static/update.gz" % hostname
     return self.GetUpdatePayload(hash, size, url)