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// 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 "base/win/windows_version.h"
#include <windows.h>
#include "base/logging.h"
#include "base/strings/utf_string_conversions.h"
#include "base/win/registry.h"
namespace {
typedef BOOL (WINAPI *GetProductInfoPtr)(DWORD, DWORD, DWORD, DWORD, PDWORD);
}
namespace base {
namespace win {
// static
OSInfo* OSInfo::GetInstance() {
// Note: we don't use the Singleton class because it depends on AtExitManager,
// and it's convenient for other modules to use this classs without it. This
// pattern is copied from gurl.cc.
static OSInfo* info;
if (!info) {
OSInfo* new_info = new OSInfo();
if (InterlockedCompareExchangePointer(
reinterpret_cast<PVOID*>(&info), new_info, NULL)) {
delete new_info;
}
}
return info;
}
OSInfo::OSInfo()
: version_(VERSION_PRE_XP),
architecture_(OTHER_ARCHITECTURE),
wow64_status_(GetWOW64StatusForProcess(GetCurrentProcess())) {
OSVERSIONINFOEX version_info = { sizeof version_info };
::GetVersionEx(reinterpret_cast<OSVERSIONINFO*>(&version_info));
version_number_.major = version_info.dwMajorVersion;
version_number_.minor = version_info.dwMinorVersion;
version_number_.build = version_info.dwBuildNumber;
if ((version_number_.major == 5) && (version_number_.minor > 0)) {
// Treat XP Pro x64, Home Server, and Server 2003 R2 as Server 2003.
version_ = (version_number_.minor == 1) ? VERSION_XP : VERSION_SERVER_2003;
} else if (version_number_.major == 6) {
switch (version_number_.minor) {
case 0:
// Treat Windows Server 2008 the same as Windows Vista.
version_ = VERSION_VISTA;
break;
case 1:
// Treat Windows Server 2008 R2 the same as Windows 7.
version_ = VERSION_WIN7;
break;
case 2:
// Treat Windows Server 2012 the same as Windows 8.
version_ = VERSION_WIN8;
break;
default:
DCHECK_EQ(version_number_.minor, 3);
version_ = VERSION_WIN8_1;
break;
}
} else if (version_number_.major > 6) {
NOTREACHED();
version_ = VERSION_WIN_LAST;
}
service_pack_.major = version_info.wServicePackMajor;
service_pack_.minor = version_info.wServicePackMinor;
SYSTEM_INFO system_info = { 0 };
::GetNativeSystemInfo(&system_info);
switch (system_info.wProcessorArchitecture) {
case PROCESSOR_ARCHITECTURE_INTEL: architecture_ = X86_ARCHITECTURE; break;
case PROCESSOR_ARCHITECTURE_AMD64: architecture_ = X64_ARCHITECTURE; break;
case PROCESSOR_ARCHITECTURE_IA64: architecture_ = IA64_ARCHITECTURE; break;
}
processors_ = system_info.dwNumberOfProcessors;
allocation_granularity_ = system_info.dwAllocationGranularity;
GetProductInfoPtr get_product_info;
DWORD os_type;
if (version_info.dwMajorVersion == 6) {
// Only present on Vista+.
get_product_info = reinterpret_cast<GetProductInfoPtr>(
::GetProcAddress(::GetModuleHandle(L"kernel32.dll"), "GetProductInfo"));
get_product_info(version_info.dwMajorVersion, version_info.dwMinorVersion,
0, 0, &os_type);
switch (os_type) {
case PRODUCT_CLUSTER_SERVER:
case PRODUCT_DATACENTER_SERVER:
case PRODUCT_DATACENTER_SERVER_CORE:
case PRODUCT_ENTERPRISE_SERVER:
case PRODUCT_ENTERPRISE_SERVER_CORE:
case PRODUCT_ENTERPRISE_SERVER_IA64:
case PRODUCT_SMALLBUSINESS_SERVER:
case PRODUCT_SMALLBUSINESS_SERVER_PREMIUM:
case PRODUCT_STANDARD_SERVER:
case PRODUCT_STANDARD_SERVER_CORE:
case PRODUCT_WEB_SERVER:
version_type_ = SUITE_SERVER;
break;
case PRODUCT_PROFESSIONAL:
case PRODUCT_ULTIMATE:
case PRODUCT_ENTERPRISE:
case PRODUCT_BUSINESS:
version_type_ = SUITE_PROFESSIONAL;
break;
case PRODUCT_HOME_BASIC:
case PRODUCT_HOME_PREMIUM:
case PRODUCT_STARTER:
default:
version_type_ = SUITE_HOME;
break;
}
} else if (version_info.dwMajorVersion == 5 &&
version_info.dwMinorVersion == 2) {
if (version_info.wProductType == VER_NT_WORKSTATION &&
system_info.wProcessorArchitecture == PROCESSOR_ARCHITECTURE_AMD64) {
version_type_ = SUITE_PROFESSIONAL;
} else if (version_info.wSuiteMask & VER_SUITE_WH_SERVER ) {
version_type_ = SUITE_HOME;
} else {
version_type_ = SUITE_SERVER;
}
} else if (version_info.dwMajorVersion == 5 &&
version_info.dwMinorVersion == 1) {
if(version_info.wSuiteMask & VER_SUITE_PERSONAL)
version_type_ = SUITE_HOME;
else
version_type_ = SUITE_PROFESSIONAL;
} else {
// Windows is pre XP so we don't care but pick a safe default.
version_type_ = SUITE_HOME;
}
}
OSInfo::~OSInfo() {
}
std::string OSInfo::processor_model_name() {
if (processor_model_name_.empty()) {
const wchar_t kProcessorNameString[] =
L"HARDWARE\\DESCRIPTION\\System\\CentralProcessor\\0";
base::win::RegKey key(HKEY_LOCAL_MACHINE, kProcessorNameString, KEY_READ);
string16 value;
key.ReadValue(L"ProcessorNameString", &value);
processor_model_name_ = UTF16ToUTF8(value);
}
return processor_model_name_;
}
// static
OSInfo::WOW64Status OSInfo::GetWOW64StatusForProcess(HANDLE process_handle) {
typedef BOOL (WINAPI* IsWow64ProcessFunc)(HANDLE, PBOOL);
IsWow64ProcessFunc is_wow64_process = reinterpret_cast<IsWow64ProcessFunc>(
GetProcAddress(GetModuleHandle(L"kernel32.dll"), "IsWow64Process"));
if (!is_wow64_process)
return WOW64_DISABLED;
BOOL is_wow64 = FALSE;
if (!(*is_wow64_process)(process_handle, &is_wow64))
return WOW64_UNKNOWN;
return is_wow64 ? WOW64_ENABLED : WOW64_DISABLED;
}
Version GetVersion() {
return OSInfo::GetInstance()->version();
}
} // namespace win
} // namespace base
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