AU: Minor fixes to get it to do full update on real device

src/platform/update_engine/update_check_action.cc

 // 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.
 
 #include "update_engine/update_check_action.h"
 #include <inttypes.h>
 #include <sstream>
 
 #include <libxml/parser.h>
 #include <libxml/xpath.h>
@@ skipping 89 matching lines @@
     : http_fetcher_(http_fetcher) {}
 
 UpdateCheckAction::~UpdateCheckAction() {}
 
 void UpdateCheckAction::PerformAction() {
   CHECK(HasInputObject());
   params_ = GetInputObject();
   http_fetcher_->set_delegate(this);
   string request_post(FormatRequest(params_));
   http_fetcher_->SetPostData(request_post.data(), request_post.size());
+  LOG(INFO) << "Checking for update at " << params_.update_url;
+  LOG(INFO) << "Request: " << request_post;
   http_fetcher_->BeginTransfer(params_.update_url);
 }
 
 void UpdateCheckAction::TerminateProcessing() {
   http_fetcher_->TerminateTransfer();
 }
 
 // We just store the response in the buffer. Once we've received all bytes,
 // we'll look in the buffer and decide what to do.
 void UpdateCheckAction::ReceivedBytes(HttpFetcher *fetcher,
@@ skipping 63 matching lines @@
   return ret;
 }
 }  // namespace {}
 
 // If the transfer was successful, this uses libxml2 to parse the response
 // and fill in the appropriate fields of the output object. Also, notifies
 // the processor that we're done.
 void UpdateCheckAction::TransferComplete(HttpFetcher *fetcher,
                                          bool successful) {
   ScopedActionCompleter completer(processor_, this);
-  if (!successful)
+  LOG(INFO) << "Update check response: " << string(response_buffer_.begin(),
+                                                   response_buffer_.end());
+  if (!successful) {
+    LOG(ERROR) << "Update check network transfer failed.";
     return;
+  }
   if (!HasOutputPipe()) {
     // Just set success to whether or not the http transfer succeeded,
     // which must be true at this point in the code.
     completer.set_success(true);
     return;
   }
 
   // parse our response and fill the fields in the output object
   scoped_ptr_malloc<xmlDoc, ScopedPtrXmlDocFree> doc(
       xmlParseMemory(&response_buffer_[0], response_buffer_.size()));
@@ skipping 52 matching lines @@
   output_object.hash = XmlGetProperty(updatecheck_node, "hash");
   output_object.size = ParseInt(XmlGetProperty(updatecheck_node, "size"));
   output_object.needs_admin =
       XmlGetProperty(updatecheck_node, "needsadmin") == "true";
   output_object.prompt = XmlGetProperty(updatecheck_node, "Prompt") == "true";
   SetOutputObject(output_object);
   return;
 }
 
 };  // namespace chromeos_update_engine