[Chromoting] Implement UpdateConfig() for the Windows host.

remoting/host/plugin/daemon_controller_win.cc

 // Copyright (c) 2012 The Chromium 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 "remoting/host/plugin/daemon_controller.h"
 
 #include <objbase.h>
 
 #include "base/basictypes.h"
 #include "base/bind.h"
@@ skipping 84 matching lines @@
   // Opens the Chromoting service returning its handle in |service_out|.
   DWORD OpenService(ScopedScHandle* service_out);
 
   // The functions that actually do the work. They should be called in
   // the context of |worker_thread_|;
   void DoGetConfig(const GetConfigCallback& callback);
   void DoInstallAsNeededAndStart(scoped_ptr<base::DictionaryValue> config,
                                  const CompletionCallback& done_callback);
   void DoSetConfigAndStart(scoped_ptr<base::DictionaryValue> config,
                            const CompletionCallback& done_callback);
+  void DoUpdateConfig(scoped_ptr<base::DictionaryValue> config,
+                      const CompletionCallback& done_callback);
   void DoStop(const CompletionCallback& done_callback);
 
   // The worker thread used for servicing long running operations.
   ComThread worker_thread_;
 
   scoped_ptr<DaemonInstallerWin> installer_;
 
   DISALLOW_COPY_AND_ASSIGN(DaemonControllerWin);
 };
 
@@ skipping 80 matching lines @@
 void DaemonControllerWin::GetConfig(const GetConfigCallback& callback) {
   worker_thread_.message_loop_proxy()->PostTask(
       FROM_HERE,
       base::Bind(&DaemonControllerWin::DoGetConfig,
                  base::Unretained(this), callback));
 }
 
 void DaemonControllerWin::SetConfigAndStart(
     scoped_ptr<base::DictionaryValue> config,
     const CompletionCallback& done_callback) {
-
   worker_thread_.message_loop_proxy()->PostTask(
       FROM_HERE, base::Bind(
           &DaemonControllerWin::DoInstallAsNeededAndStart,
           base::Unretained(this), base::Passed(&config), done_callback));
 }
 
 void DaemonControllerWin::UpdateConfig(
     scoped_ptr<base::DictionaryValue> config,
     const CompletionCallback& done_callback) {
-  NOTIMPLEMENTED();
-  done_callback.Run(RESULT_FAILED);
+  worker_thread_.message_loop_proxy()->PostTask(
+      FROM_HERE, base::Bind(
+          &DaemonControllerWin::DoUpdateConfig,
+          base::Unretained(this), base::Passed(&config), done_callback));
 }
 
 void DaemonControllerWin::Stop(const CompletionCallback& done_callback) {
   worker_thread_.message_loop_proxy()->PostTask(
       FROM_HERE, base::Bind(
           &DaemonControllerWin::DoStop, base::Unretained(this),
           done_callback));
 }
 
 // static
@@ skipping 171 matching lines @@
   if (FAILED(hr)) {
     done_callback.Run(HResultToAsyncResult(hr));
     return;
   }
 
   // Start daemon.
   hr = control->StartDaemon();
   done_callback.Run(HResultToAsyncResult(hr));
 }
 
+void DaemonControllerWin::DoUpdateConfig(
+    scoped_ptr<base::DictionaryValue> config,
+    const CompletionCallback& done_callback) {
+  // TODO(simonmorris): Much of this code was copied from DoSetConfigAndStart().
+  // Refactor.
+  DCHECK(worker_thread_.message_loop_proxy()->BelongsToCurrentThread());
+
+  IDaemonControl* control = NULL;
+  HRESULT hr = worker_thread_.ActivateElevatedController(&control);
+  if (FAILED(hr)) {
+    done_callback.Run(HResultToAsyncResult(hr));
+    return;
+  }
+
+  // Store the configuration.
+  std::string file_content;
+  base::JSONWriter::Write(config.get(), &file_content);
+
+  ScopedBstr host_config(UTF8ToUTF16(file_content).c_str());
+  if (host_config == NULL) {
+    done_callback.Run(HResultToAsyncResult(E_OUTOFMEMORY));
+    return;
+  }
+
+  hr = control->UpdateConfig(host_config);
+  done_callback.Run(HResultToAsyncResult(hr));
+}
+
 void DaemonControllerWin::DoStop(const CompletionCallback& done_callback) {
   DCHECK(worker_thread_.message_loop_proxy()->BelongsToCurrentThread());
 
   IDaemonControl* control = NULL;
   HRESULT hr = worker_thread_.ActivateElevatedController(&control);
   if (FAILED(hr)) {
     done_callback.Run(HResultToAsyncResult(hr));
     return;
   }
 
   hr = control->StopDaemon();
   done_callback.Run(HResultToAsyncResult(hr));
 }
 
 }  // namespace
 
 scoped_ptr<DaemonController> remoting::DaemonController::Create() {
   return scoped_ptr<DaemonController>(new DaemonControllerWin());
 }
 
 }  // namespace remoting