Introducing the Utility process, which handles the unpacking and verification

of extension packages.

This is a first pass.  In the second pass, I will add support for transcoding
the manifest and any images in the browser process.

BUG=11680
Review URL: http://codereview.chromium.org/114027

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@16198 0039d316-1c4b-4281-b951-d872f2087c98

4 files changed, 275 insertions, 0 deletions

diff --git a/chrome/utility/utility.vcproj b/chrome/utility/utility.vcproj
new file mode 100644
index 0000000..0c77303
--- /dev/null
+++ b/chrome/utility/utility.vcproj
@@ -0,0 +1,155 @@
+<?xml version="1.0" encoding="Windows-1252"?>
+<VisualStudioProject
+	ProjectType="Visual C++"
+	Version="8.00"
+	Name="utility"
+	ProjectGUID="{4D2B38E6-65FF-4F97-B88A-E441DF54EBF7}"
+	RootNamespace="utility"
+	Keyword="Win32Proj"
+	>
+	<Platforms>
+		<Platform
+			Name="Win32"
+		/>
+	</Platforms>
+	<ToolFiles>
+	</ToolFiles>
+	<Configurations>
+		<Configuration
+			Name="Debug|Win32"
+			ConfigurationType="4"
+			InheritedPropertySheets="$(SolutionDir)..\build\common.vsprops;$(SolutionDir)..\build\debug.vsprops;$(SolutionDir)..\skia\using_skia.vsprops;..\tools\build\win\precompiled.vsprops"
+			>
+			<Tool
+				Name="VCPreBuildEventTool"
+			/>
+			<Tool
+				Name="VCCustomBuildTool"
+			/>
+			<Tool
+				Name="VCXMLDataGeneratorTool"
+			/>
+			<Tool
+				Name="VCWebServiceProxyGeneratorTool"
+			/>
+			<Tool
+				Name="VCMIDLTool"
+			/>
+			<Tool
+				Name="VCCLCompilerTool"
+			/>
+			<Tool
+				Name="VCManagedResourceCompilerTool"
+			/>
+			<Tool
+				Name="VCResourceCompilerTool"
+			/>
+			<Tool
+				Name="VCPreLinkEventTool"
+			/>
+			<Tool
+				Name="VCLibrarianTool"
+			/>
+			<Tool
+				Name="VCALinkTool"
+			/>
+			<Tool
+				Name="VCXDCMakeTool"
+			/>
+			<Tool
+				Name="VCBscMakeTool"
+			/>
+			<Tool
+				Name="VCFxCopTool"
+			/>
+			<Tool
+				Name="VCPostBuildEventTool"
+			/>
+		</Configuration>
+		<Configuration
+			Name="Release|Win32"
+			ConfigurationType="4"
+			InheritedPropertySheets="$(SolutionDir)..\build\common.vsprops;..\..\build\release.vsprops;$(SolutionDir)..\skia\using_skia.vsprops"
+			>
+			<Tool
+				Name="VCPreBuildEventTool"
+			/>
+			<Tool
+				Name="VCCustomBuildTool"
+			/>
+			<Tool
+				Name="VCXMLDataGeneratorTool"
+			/>
+			<Tool
+				Name="VCWebServiceProxyGeneratorTool"
+			/>
+			<Tool
+				Name="VCMIDLTool"
+			/>
+			<Tool
+				Name="VCCLCompilerTool"
+			/>
+			<Tool
+				Name="VCManagedResourceCompilerTool"
+			/>
+			<Tool
+				Name="VCResourceCompilerTool"
+			/>
+			<Tool
+				Name="VCPreLinkEventTool"
+			/>
+			<Tool
+				Name="VCLibrarianTool"
+			/>
+			<Tool
+				Name="VCALinkTool"
+			/>
+			<Tool
+				Name="VCXDCMakeTool"
+			/>
+			<Tool
+				Name="VCBscMakeTool"
+			/>
+			<Tool
+				Name="VCFxCopTool"
+			/>
+			<Tool
+				Name="VCPostBuildEventTool"
+			/>
+		</Configuration>
+	</Configurations>
+	<References>
+	</References>
+	<Files>
+		<File
+			RelativePath="..\tools\build\win\precompiled.cc"
+			>
+			<FileConfiguration
+				Name="Debug|Win32"
+				>
+				<Tool
+					Name="VCCLCompilerTool"
+					UsePrecompiledHeader="1"
+				/>
+			</FileConfiguration>
+		</File>
+		<File
+			RelativePath="..\tools\build\win\precompiled.h"
+			>
+		</File>
+		<File
+			RelativePath=".\utility_main.cc"
+			>
+		</File>
+		<File
+			RelativePath=".\utility_thread.cc"
+			>
+		</File>
+		<File
+			RelativePath=".\utility_thread.h"
+			>
+		</File>
+	</Files>
+	<Globals>
+	</Globals>
+</VisualStudioProject>
diff --git a/chrome/utility/utility_main.cc b/chrome/utility/utility_main.cc
new file mode 100644
index 0000000..ad66043c
--- /dev/null
+++ b/chrome/utility/utility_main.cc
@@ -0,0 +1,44 @@
+// Copyright (c) 2009 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 "base/command_line.h"
+#include "base/message_loop.h"
+#include "base/string_util.h"
+#include "base/system_monitor.h"
+#include "chrome/common/child_process.h"
+#include "chrome/common/chrome_constants.h"
+#include "chrome/common/chrome_switches.h"
+#include "chrome/common/logging_chrome.h"
+#include "chrome/common/main_function_params.h"
+#include "chrome/utility/utility_thread.h"
+
+#if defined(OS_WIN)
+#include "chrome/common/sandbox_init_wrapper.h"
+#include "sandbox/src/sandbox.h"
+#endif
+
+// Mainline routine for running as the utility process.
+int UtilityMain(const MainFunctionParams& parameters) {
+  // The main thread of the render process.
+  MessageLoopForIO main_message_loop;
+  std::wstring app_name = chrome::kBrowserAppName;
+  PlatformThread::SetName(WideToASCII(app_name + L"_UtilityMain").c_str());
+
+  // Initialize the SystemMonitor
+  base::SystemMonitor::Start();
+
+  ChildProcess utility_process(new UtilityThread());
+#if defined(OS_WIN)
+  sandbox::TargetServices* target_services =
+      parameters.sandbox_info_.TargetServices();
+  if (!target_services)
+    return false;
+
+  target_services->LowerToken();
+#endif
+
+  MessageLoop::current()->Run();
+
+  return 0;
+}
diff --git a/chrome/utility/utility_thread.cc b/chrome/utility/utility_thread.cc
new file mode 100644
index 0000000..269a86b
--- /dev/null
+++ b/chrome/utility/utility_thread.cc
@@ -0,0 +1,40 @@
+// Copyright (c) 2009 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 "chrome/utility/utility_thread.h"
+
+#include "chrome/common/child_process.h"
+#include "chrome/common/extensions/extension_unpacker.h"
+#include "chrome/common/render_messages.h"
+
+UtilityThread::UtilityThread() : ChildThread(base::Thread::Options()) {
+}
+
+UtilityThread::~UtilityThread() {
+}
+
+void UtilityThread::Init() {
+  ChildThread::Init();
+  ChildProcess::current()->AddRefProcess();
+}
+
+void UtilityThread::CleanUp() {
+  // Shutdown in reverse of the initialization order.
+  ChildThread::CleanUp();
+}
+
+void UtilityThread::OnControlMessageReceived(const IPC::Message& msg) {
+  IPC_BEGIN_MESSAGE_MAP(UtilityThread, msg)
+    IPC_MESSAGE_HANDLER(UtilityMsg_UnpackExtension, OnUnpackExtension)
+  IPC_END_MESSAGE_MAP()
+}
+
+void UtilityThread::OnUnpackExtension(const FilePath& extension_path) {
+  ExtensionUnpacker unpacker(extension_path);
+  bool success = unpacker.Run();
+  Send(new UtilityHostMsg_UnpackExtension_Reply(success,
+                                                unpacker.error_message()));
+
+  ChildProcess::current()->ReleaseProcess();
+}
diff --git a/chrome/utility/utility_thread.h b/chrome/utility/utility_thread.h
new file mode 100644
index 0000000..9d918dc
--- /dev/null
+++ b/chrome/utility/utility_thread.h
@@ -0,0 +1,36 @@
+// Copyright (c) 2009 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.
+
+#ifndef CHROME_UTILITY_UTILITY_THREAD_H_
+#define CHROME_UTILITY_UTILITY_THREAD_H_
+
+#include "base/thread.h"
+#include "chrome/common/child_thread.h"
+
+class GURL;
+
+// This class represents the background thread where the utility task runs.
+class UtilityThread : public ChildThread {
+ public:
+  UtilityThread();
+  ~UtilityThread();
+
+  // Returns the one utility thread.
+  static UtilityThread* current() {
+    return static_cast<UtilityThread*>(ChildThread::current());
+  }
+
+ private:
+  // IPC messages
+  virtual void OnControlMessageReceived(const IPC::Message& msg);
+  void OnUnpackExtension(const FilePath& extension_path);
+
+  // Called by the thread base class
+  virtual void Init();
+  virtual void CleanUp();
+
+  DISALLOW_COPY_AND_ASSIGN(UtilityThread);
+};
+
+#endif  // CHROME_UTILITY_UTILITY_THREAD_H_