Moved ExternalExtensionLoaders/Providers into extensions namespace

chrome/browser/extensions/external_registry_extension_loader_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 "chrome/browser/extensions/external_registry_extension_loader_win.h"
-
-#include "base/bind.h"
-#include "base/file_path.h"
-#include "base/file_util.h"
-#include "base/memory/scoped_handle.h"
-#include "base/metrics/histogram.h"
-#include "base/string_util.h"
-#include "base/time.h"
-#include "base/utf_string_conversions.h"
-#include "base/values.h"
-#include "base/version.h"
-#include "base/win/registry.h"
-#include "chrome/browser/extensions/external_extension_provider_impl.h"
-#include "content/public/browser/browser_thread.h"
-
-using content::BrowserThread;
-
-namespace {
-
-// The Registry subkey that contains information about external extensions.
-const char kRegistryExtensions[] = "Software\\Google\\Chrome\\Extensions";
-
-// Registry value of of that key that defines the path to the .crx file.
-const wchar_t kRegistryExtensionPath[] = L"path";
-
-// Registry value of that key that defines the current version of the .crx file.
-const wchar_t kRegistryExtensionVersion[] = L"version";
-
-bool CanOpenFileForReading(const FilePath& path) {
-  ScopedStdioHandle file_handle(file_util::OpenFile(path, "rb"));
-  return file_handle.get() != NULL;
-}
-
-}  // namespace
-
-void ExternalRegistryExtensionLoader::StartLoading() {
-  CHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
-  BrowserThread::PostTask(
-      BrowserThread::FILE, FROM_HERE,
-      base::Bind(&ExternalRegistryExtensionLoader::LoadOnFileThread, this));
-}
-
-void ExternalRegistryExtensionLoader::LoadOnFileThread() {
-  CHECK(BrowserThread::CurrentlyOn(BrowserThread::FILE));
-  base::TimeTicks start_time = base::TimeTicks::Now();
-  scoped_ptr<DictionaryValue> prefs(new DictionaryValue);
-
-  // A map of IDs, to weed out duplicates between HKCU and HKLM.
-  std::set<string16> keys;
-  base::win::RegistryKeyIterator iterator_machine_key(
-      HKEY_LOCAL_MACHINE, ASCIIToWide(kRegistryExtensions).c_str());
-  for (; iterator_machine_key.Valid(); ++iterator_machine_key)
-    keys.insert(iterator_machine_key.Name());
-  base::win::RegistryKeyIterator iterator_user_key(
-      HKEY_CURRENT_USER, ASCIIToWide(kRegistryExtensions).c_str());
-  for (; iterator_user_key.Valid(); ++iterator_user_key)
-    keys.insert(iterator_user_key.Name());
-
-  // Iterate over the keys found, first trying HKLM, then HKCU, as per Windows
-  // policy conventions. We only fall back to HKCU if the HKLM key cannot be
-  // opened, not if the data within the key is invalid, for example.
-  for (std::set<string16>::const_iterator it = keys.begin();
-       it != keys.end(); ++it) {
-    base::win::RegKey key;
-    string16 key_path = ASCIIToWide(kRegistryExtensions);
-    key_path.append(L"\\");
-    key_path.append(*it);
-    if (key.Open(HKEY_LOCAL_MACHINE,
-                 key_path.c_str(), KEY_READ) != ERROR_SUCCESS) {
-      if (key.Open(HKEY_CURRENT_USER,
-                   key_path.c_str(), KEY_READ) != ERROR_SUCCESS) {
-        LOG(ERROR) << "Unable to read registry key at path (HKLM & HKCU): "
-                   << key_path << ".";
-        continue;
-      }
-    }
-
-    string16 extension_path_str;
-    if (key.ReadValue(kRegistryExtensionPath, &extension_path_str)
-        != ERROR_SUCCESS) {
-      // TODO(erikkay): find a way to get this into about:extensions
-      LOG(ERROR) << "Missing value " << kRegistryExtensionPath
-                 << " for key " << key_path << ".";
-      continue;
-    }
-
-    FilePath extension_path(extension_path_str);
-    if (!extension_path.IsAbsolute()) {
-      LOG(ERROR) << "File path " << extension_path_str
-                 << " needs to be absolute in key "
-                 << key_path;
-      continue;
-    }
-
-    if (!file_util::PathExists(extension_path)) {
-      LOG(ERROR) << "File " << extension_path_str
-                 << " for key " << key_path
-                 << " does not exist or is not readable.";
-      continue;
-    }
-
-    if (!CanOpenFileForReading(extension_path)) {
-      LOG(ERROR) << "File " << extension_path_str
-                 << " for key " << key_path << " can not be read. "
-                 << "Check that users who should have the extension "
-                 << "installed have permission to read it.";
-      continue;
-    }
-
-    string16 extension_version;
-    if (key.ReadValue(kRegistryExtensionVersion, &extension_version)
-        != ERROR_SUCCESS) {
-      // TODO(erikkay): find a way to get this into about:extensions
-      LOG(ERROR) << "Missing value " << kRegistryExtensionVersion
-                 << " for key " << key_path << ".";
-      continue;
-    }
-
-    std::string id = WideToASCII(*it);
-    StringToLowerASCII(&id);
-    if (!extensions::Extension::IdIsValid(id)) {
-      LOG(ERROR) << "Invalid id value " << id
-                 << " for key " << key_path << ".";
-      continue;
-    }
-
-    Version version(WideToASCII(extension_version));
-    if (!version.IsValid()) {
-      LOG(ERROR) << "Invalid version value " << extension_version
-                 << " for key " << key_path << ".";
-      continue;
-    }
-
-    prefs->SetString(
-        id + "." + ExternalExtensionProviderImpl::kExternalVersion,
-        WideToASCII(extension_version));
-    prefs->SetString(
-        id + "." + ExternalExtensionProviderImpl::kExternalCrx,
-        extension_path_str);
-  }
-
-  prefs_.reset(prefs.release());
-  HISTOGRAM_TIMES("Extensions.ExternalRegistryLoaderWin",
-                  base::TimeTicks::Now() - start_time);
-  BrowserThread::PostTask(
-      BrowserThread::UI, FROM_HERE,
-      base::Bind(&ExternalRegistryExtensionLoader::LoadFinished, this));
-}