Move tracked prefs into services/preferences/tracked.

components/user_prefs/tracked/registry_hash_store_contents_win.cc

-// Copyright (c) 2016 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 "components/user_prefs/tracked/registry_hash_store_contents_win.h"
-
-#include <windows.h>
-
-#include "base/logging.h"
-#include "base/memory/ptr_util.h"
-#include "base/numerics/safe_conversions.h"
-#include "base/strings/string_split.h"
-#include "base/strings/stringprintf.h"
-#include "base/strings/utf_string_conversions.h"
-#include "base/values.h"
-#include "base/win/registry.h"
-#include "components/user_prefs/tracked/tracked_preference_histogram_names.h"
-
-using base::win::RegistryValueIterator;
-
-namespace {
-
-constexpr size_t kMacSize = 64;
-
-base::string16 GetSplitPrefKeyName(const base::string16& reg_key_name,
-                                   const std::string& split_key_name) {
-  return reg_key_name + L"\\" + base::UTF8ToUTF16(split_key_name);
-}
-
-bool ReadMacFromRegistry(const base::win::RegKey& key,
-                         const std::string& value_name,
-                         std::string* out_mac) {
-  base::string16 string_value;
-  if (key.ReadValue(base::UTF8ToUTF16(value_name).c_str(), &string_value) ==
-          ERROR_SUCCESS &&
-      string_value.size() == kMacSize) {
-    out_mac->assign(base::UTF16ToUTF8(string_value));
-    return true;
-  }
-  return false;
-}
-
-// Removes |value_name| under |reg_key_name|. Returns true if found and
-// successfully removed.
-bool ClearAtomicMac(const base::string16& reg_key_name,
-                    const std::string& value_name) {
-  base::win::RegKey key;
-  if (key.Open(HKEY_CURRENT_USER, reg_key_name.c_str(),
-               KEY_SET_VALUE | KEY_WOW64_32KEY) == ERROR_SUCCESS) {
-    return key.DeleteValue(base::UTF8ToUTF16(value_name).c_str()) ==
-           ERROR_SUCCESS;
-  }
-  return false;
-}
-
-// Deletes |split_key_name| under |reg_key_name|. Returns true if found and
-// successfully removed.
-bool ClearSplitMac(const base::string16& reg_key_name,
-                   const std::string& split_key_name) {
-  base::win::RegKey key;
-  if (key.Open(HKEY_CURRENT_USER,
-               GetSplitPrefKeyName(reg_key_name, split_key_name).c_str(),
-               KEY_SET_VALUE | KEY_WOW64_32KEY) == ERROR_SUCCESS) {
-    return key.DeleteKey(L"") == ERROR_SUCCESS;
-  }
-  return false;
-}
-
-}  // namespace
-
-RegistryHashStoreContentsWin::RegistryHashStoreContentsWin(
-    const base::string16& registry_path,
-    const base::string16& store_key)
-    : preference_key_name_(registry_path + L"\\PreferenceMACs\\" + store_key) {}
-
-RegistryHashStoreContentsWin::RegistryHashStoreContentsWin(
-    const RegistryHashStoreContentsWin& other) = default;
-
-bool RegistryHashStoreContentsWin::IsCopyable() const {
-  return true;
-}
-
-std::unique_ptr<HashStoreContents> RegistryHashStoreContentsWin::MakeCopy()
-    const {
-  return base::WrapUnique(new RegistryHashStoreContentsWin(*this));
-}
-
-base::StringPiece RegistryHashStoreContentsWin::GetUMASuffix() const {
-  return user_prefs::tracked::kTrackedPrefRegistryValidationSuffix;
-}
-
-void RegistryHashStoreContentsWin::Reset() {
-  base::win::RegKey key;
-  if (key.Open(HKEY_CURRENT_USER, preference_key_name_.c_str(),
-               KEY_SET_VALUE | KEY_WOW64_32KEY) == ERROR_SUCCESS) {
-    LONG result = key.DeleteKey(L"");
-    DCHECK(result == ERROR_SUCCESS || result == ERROR_FILE_NOT_FOUND) << result;
-  }
-}
-
-bool RegistryHashStoreContentsWin::GetMac(const std::string& path,
-                                          std::string* out_value) {
-  base::win::RegKey key;
-  if (key.Open(HKEY_CURRENT_USER, preference_key_name_.c_str(),
-               KEY_QUERY_VALUE | KEY_WOW64_32KEY) == ERROR_SUCCESS) {
-    return ReadMacFromRegistry(key, path, out_value);
-  }
-
-  return false;
-}
-
-bool RegistryHashStoreContentsWin::GetSplitMacs(
-    const std::string& path,
-    std::map<std::string, std::string>* split_macs) {
-  DCHECK(split_macs);
-  DCHECK(split_macs->empty());
-
-  RegistryValueIterator iter_key(
-      HKEY_CURRENT_USER,
-      GetSplitPrefKeyName(preference_key_name_, path).c_str());
-
-  for (; iter_key.Valid(); ++iter_key) {
-    split_macs->insert(make_pair(base::UTF16ToUTF8(iter_key.Name()),
-                                 base::UTF16ToUTF8(iter_key.Value())));
-  }
-
-  return !split_macs->empty();
-}
-
-void RegistryHashStoreContentsWin::SetMac(const std::string& path,
-                                          const std::string& value) {
-  base::win::RegKey key;
-  DCHECK_EQ(kMacSize, value.size());
-
-  if (key.Create(HKEY_CURRENT_USER, preference_key_name_.c_str(),
-                 KEY_SET_VALUE | KEY_WOW64_32KEY) == ERROR_SUCCESS) {
-    key.WriteValue(base::UTF8ToUTF16(path).c_str(),
-                   base::UTF8ToUTF16(value).c_str());
-  }
-}
-
-void RegistryHashStoreContentsWin::SetSplitMac(const std::string& path,
-                                               const std::string& split_path,
-                                               const std::string& value) {
-  base::win::RegKey key;
-  DCHECK_EQ(kMacSize, value.size());
-
-  if (key.Create(HKEY_CURRENT_USER,
-                 GetSplitPrefKeyName(preference_key_name_, path).c_str(),
-                 KEY_SET_VALUE | KEY_WOW64_32KEY) == ERROR_SUCCESS) {
-    key.WriteValue(base::UTF8ToUTF16(split_path).c_str(),
-                   base::UTF8ToUTF16(value).c_str());
-  }
-}
-
-bool RegistryHashStoreContentsWin::RemoveEntry(const std::string& path) {
-  return ClearAtomicMac(preference_key_name_, path) ||
-         ClearSplitMac(preference_key_name_, path);
-}
-
-void RegistryHashStoreContentsWin::ImportEntry(const std::string& path,
-                                               const base::Value* in_value) {
-  NOTREACHED()
-      << "RegistryHashStoreContents does not support the ImportEntry operation";
-}
-
-const base::DictionaryValue* RegistryHashStoreContentsWin::GetContents() const {
-  NOTREACHED()
-      << "RegistryHashStoreContents does not support the GetContents operation";
-  return NULL;
-}
-
-std::string RegistryHashStoreContentsWin::GetSuperMac() const {
-  NOTREACHED()
-      << "RegistryHashStoreContents does not support the GetSuperMac operation";
-  return NULL;
-}
-
-void RegistryHashStoreContentsWin::SetSuperMac(const std::string& super_mac) {
-  NOTREACHED()
-      << "RegistryHashStoreContents does not support the SetSuperMac operation";
-}