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// Copyright (c) 2011 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/test/test_reg_util_win.h"
#include "base/guid.h"
#include "base/logging.h"
#include "base/strings/string_number_conversions.h"
#include "base/strings/string_util.h"
#include "base/strings/utf_string_conversions.h"
#include "testing/gtest/include/gtest/gtest.h"
namespace registry_util {
namespace {
const wchar_t kTimestampDelimiter[] = L"$";
const wchar_t kTempTestKeyPath[] = L"Software\\Chromium\\TempTestKeys";
void DeleteStaleTestKeys(const base::Time& now, const string16& test_key_root) {
base::win::RegKey test_root_key;
if (test_root_key.Open(HKEY_CURRENT_USER,
test_key_root.c_str(),
KEY_ALL_ACCESS) != ERROR_SUCCESS) {
// This will occur on first-run, but is harmless.
return;
}
base::win::RegistryKeyIterator iterator_test_root_key(HKEY_CURRENT_USER,
test_key_root.c_str());
for (; iterator_test_root_key.Valid(); ++iterator_test_root_key) {
string16 key_name = iterator_test_root_key.Name();
std::vector<string16> tokens;
Tokenize(key_name, string16(kTimestampDelimiter), &tokens);
int64 key_name_as_number = 0;
if (!base::StringToInt64(tokens[0], &key_name_as_number)) {
test_root_key.DeleteKey(key_name.c_str());
continue;
}
base::Time key_time = base::Time::FromInternalValue(key_name_as_number);
base::TimeDelta age = now - key_time;
if (age > base::TimeDelta::FromHours(24))
test_root_key.DeleteKey(key_name.c_str());
}
}
string16 GenerateTempKeyPath(const string16& test_key_root,
const base::Time& timestamp) {
string16 key_path = test_key_root;
key_path += L"\\" + base::Int64ToString16(timestamp.ToInternalValue());
key_path += kTimestampDelimiter + base::ASCIIToWide(base::GenerateGUID());
return key_path;
}
} // namespace
RegistryOverrideManager::ScopedRegistryKeyOverride::ScopedRegistryKeyOverride(
HKEY override,
const string16& key_path)
: override_(override) {
EXPECT_EQ(
ERROR_SUCCESS,
temp_key_.Create(HKEY_CURRENT_USER, key_path.c_str(), KEY_ALL_ACCESS));
EXPECT_EQ(ERROR_SUCCESS,
::RegOverridePredefKey(override_, temp_key_.Handle()));
}
RegistryOverrideManager::
ScopedRegistryKeyOverride::~ScopedRegistryKeyOverride() {
::RegOverridePredefKey(override_, NULL);
temp_key_.DeleteKey(L"");
}
RegistryOverrideManager::RegistryOverrideManager()
: timestamp_(base::Time::Now()), test_key_root_(kTempTestKeyPath) {
DeleteStaleTestKeys(timestamp_, test_key_root_);
}
RegistryOverrideManager::RegistryOverrideManager(const base::Time& timestamp,
const string16& test_key_root)
: timestamp_(timestamp), test_key_root_(test_key_root) {
DeleteStaleTestKeys(timestamp_, test_key_root_);
}
RegistryOverrideManager::~RegistryOverrideManager() {}
void RegistryOverrideManager::OverrideRegistry(
HKEY override,
const string16& /*override_name*/) {
string16 key_path = GenerateTempKeyPath(test_key_root_, timestamp_);
overrides_.push_back(new ScopedRegistryKeyOverride(override, key_path));
}
string16 GenerateTempKeyPath() {
return GenerateTempKeyPath(string16(kTempTestKeyPath), base::Time::Now());
}
} // namespace registry_util
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