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123 lines
4.1 KiB
C++
123 lines
4.1 KiB
C++
// Copyright (c) 2011 The Chromium Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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#include "base/test/test_reg_util_win.h"
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#include <stdint.h>
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#include "base/guid.h"
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#include "base/logging.h"
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#include "base/memory/ptr_util.h"
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#include "base/strings/string_number_conversions.h"
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#include "base/strings/string_split.h"
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#include "base/strings/string_util.h"
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#include "base/strings/utf_string_conversions.h"
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#include "testing/gtest/include/gtest/gtest.h"
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#include <windows.h>
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namespace registry_util {
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namespace {
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const wchar_t kTimestampDelimiter[] = L"$";
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const wchar_t kTempTestKeyPath[] = L"Software\\Chromium\\TempTestKeys";
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void DeleteStaleTestKeys(const base::Time& now,
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const base::string16& test_key_root) {
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base::win::RegKey test_root_key;
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if (test_root_key.Open(HKEY_CURRENT_USER,
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test_key_root.c_str(),
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KEY_ALL_ACCESS) != ERROR_SUCCESS) {
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// This will occur on first-run, but is harmless.
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return;
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}
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base::win::RegistryKeyIterator iterator_test_root_key(HKEY_CURRENT_USER,
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test_key_root.c_str());
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for (; iterator_test_root_key.Valid(); ++iterator_test_root_key) {
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base::string16 key_name = iterator_test_root_key.Name();
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std::vector<base::string16> tokens = base::SplitString(
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key_name, kTimestampDelimiter, base::KEEP_WHITESPACE,
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base::SPLIT_WANT_NONEMPTY);
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if (tokens.empty())
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continue;
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int64_t key_name_as_number = 0;
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if (!base::StringToInt64(tokens[0], &key_name_as_number)) {
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test_root_key.DeleteKey(key_name.c_str());
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continue;
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}
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base::Time key_time = base::Time::FromInternalValue(key_name_as_number);
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base::TimeDelta age = now - key_time;
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if (age > base::TimeDelta::FromHours(24))
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test_root_key.DeleteKey(key_name.c_str());
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}
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}
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base::string16 GenerateTempKeyPath(const base::string16& test_key_root,
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const base::Time& timestamp) {
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base::string16 key_path = test_key_root;
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key_path += L"\\" + base::Int64ToString16(timestamp.ToInternalValue());
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key_path += kTimestampDelimiter + base::ASCIIToUTF16(base::GenerateGUID());
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return key_path;
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}
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} // namespace
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RegistryOverrideManager::ScopedRegistryKeyOverride::ScopedRegistryKeyOverride(
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HKEY override,
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const base::string16& key_path)
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: override_(override), key_path_(key_path) {}
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RegistryOverrideManager::
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ScopedRegistryKeyOverride::~ScopedRegistryKeyOverride() {
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::RegOverridePredefKey(override_, NULL);
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base::win::RegKey(HKEY_CURRENT_USER, L"", KEY_QUERY_VALUE)
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.DeleteKey(key_path_.c_str());
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}
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RegistryOverrideManager::RegistryOverrideManager()
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: timestamp_(base::Time::Now()), test_key_root_(kTempTestKeyPath) {
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DeleteStaleTestKeys(timestamp_, test_key_root_);
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}
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RegistryOverrideManager::RegistryOverrideManager(
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const base::Time& timestamp,
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const base::string16& test_key_root)
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: timestamp_(timestamp), test_key_root_(test_key_root) {
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DeleteStaleTestKeys(timestamp_, test_key_root_);
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}
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RegistryOverrideManager::~RegistryOverrideManager() {}
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void RegistryOverrideManager::OverrideRegistry(HKEY override) {
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OverrideRegistry(override, nullptr);
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}
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void RegistryOverrideManager::OverrideRegistry(HKEY override,
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base::string16* override_path) {
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base::string16 key_path = GenerateTempKeyPath(test_key_root_, timestamp_);
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base::win::RegKey temp_key;
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ASSERT_EQ(ERROR_SUCCESS, temp_key.Create(HKEY_CURRENT_USER, key_path.c_str(),
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KEY_ALL_ACCESS));
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ASSERT_EQ(ERROR_SUCCESS, ::RegOverridePredefKey(override, temp_key.Handle()));
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overrides_.push_back(
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std::make_unique<ScopedRegistryKeyOverride>(override, key_path));
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if (override_path)
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override_path->assign(key_path);
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}
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base::string16 GenerateTempKeyPath() {
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return GenerateTempKeyPath(base::string16(kTempTestKeyPath),
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base::Time::Now());
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}
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} // namespace registry_util
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