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/*
* Copyright (c) 2017 The WebRTC project authors. All Rights Reserved.
*
* Use of this source code is governed by a BSD-style license
* that can be found in the LICENSE file in the root of the source
* tree. An additional intellectual property rights grant can be found
* in the file PATENTS. All contributing project authors may
* be found in the AUTHORS file in the root of the source tree.
*/
#include "rtc_base/win/windows_version.h"
#include <windows.h>
#include <memory>
#include "rtc_base/checks.h"
#include "rtc_base/string_utils.h"
#if !defined(__clang__) && _MSC_FULL_VER < 191125507
#error VS 2017 Update 3.2 or higher is required
#endif
#if !defined(WINUWP)
namespace {
typedef BOOL(WINAPI* GetProductInfoPtr)(DWORD, DWORD, DWORD, DWORD, PDWORD);
// Mask to pull WOW64 access flags out of REGSAM access.
const REGSAM kWow64AccessMask = KEY_WOW64_32KEY | KEY_WOW64_64KEY;
// Utility class to read, write and manipulate the Windows Registry.
// Registry vocabulary primer: a "key" is like a folder, in which there
// are "values", which are <name, data> pairs, with an associated data type.
// Based on base::win::RegKey but only implements a small fraction of it.
class RegKey {
public:
RegKey() : key_(nullptr), wow64access_(0) {}
RegKey(HKEY rootkey, const wchar_t* subkey, REGSAM access)
: key_(nullptr), wow64access_(0) {
if (rootkey) {
if (access & (KEY_SET_VALUE | KEY_CREATE_SUB_KEY | KEY_CREATE_LINK))
Create(rootkey, subkey, access);
else
Open(rootkey, subkey, access);
} else {
RTC_DCHECK(!subkey);
wow64access_ = access & kWow64AccessMask;
}
}
~RegKey() { Close(); }
LONG Create(HKEY rootkey, const wchar_t* subkey, REGSAM access) {
DWORD disposition_value;
return CreateWithDisposition(rootkey, subkey, &disposition_value, access);
}
LONG CreateWithDisposition(HKEY rootkey,
const wchar_t* subkey,
DWORD* disposition,
REGSAM access) {
RTC_DCHECK(rootkey && subkey && access && disposition);
HKEY subhkey = NULL;
LONG result =
::RegCreateKeyExW(rootkey, subkey, 0, NULL, REG_OPTION_NON_VOLATILE,
access, NULL, &subhkey, disposition);
if (result == ERROR_SUCCESS) {
Close();
key_ = subhkey;
wow64access_ = access & kWow64AccessMask;
}
return result;
}
// Opens an existing reg key.
LONG Open(HKEY rootkey, const wchar_t* subkey, REGSAM access) {
RTC_DCHECK(rootkey && subkey && access);
HKEY subhkey = NULL;
LONG result = ::RegOpenKeyExW(rootkey, subkey, 0, access, &subhkey);
if (result == ERROR_SUCCESS) {
Close();
key_ = subhkey;
wow64access_ = access & kWow64AccessMask;
}
return result;
}
// Closes this reg key.
void Close() {
if (key_) {
::RegCloseKey(key_);
key_ = nullptr;
}
}
// Reads a REG_DWORD (uint32_t) into |out_value|. If |name| is null or empty,
// reads the key's default value, if any.
LONG ReadValueDW(const wchar_t* name, DWORD* out_value) const {
RTC_DCHECK(out_value);
DWORD type = REG_DWORD;
DWORD size = sizeof(DWORD);
DWORD local_value = 0;
LONG result = ReadValue(name, &local_value, &size, &type);
if (result == ERROR_SUCCESS) {
if ((type == REG_DWORD || type == REG_BINARY) && size == sizeof(DWORD))
*out_value = local_value;
else
result = ERROR_CANTREAD;
}
return result;
}
// Reads a string into |out_value|. If |name| is null or empty, reads
// the key's default value, if any.
LONG ReadValue(const wchar_t* name, std::wstring* out_value) const {
RTC_DCHECK(out_value);
const size_t kMaxStringLength = 1024; // This is after expansion.
// Use the one of the other forms of ReadValue if 1024 is too small for you.
wchar_t raw_value[kMaxStringLength];
DWORD type = REG_SZ, size = sizeof(raw_value);
LONG result = ReadValue(name, raw_value, &size, &type);
if (result == ERROR_SUCCESS) {
if (type == REG_SZ) {
*out_value = raw_value;
} else if (type == REG_EXPAND_SZ) {
wchar_t expanded[kMaxStringLength];
size =
::ExpandEnvironmentStringsW(raw_value, expanded, kMaxStringLength);
// Success: returns the number of wchar_t's copied
// Fail: buffer too small, returns the size required
// Fail: other, returns 0
if (size == 0 || size > kMaxStringLength) {
result = ERROR_MORE_DATA;
} else {
*out_value = expanded;
}
} else {
// Not a string. Oops.
result = ERROR_CANTREAD;
}
}
return result;
}
LONG ReadValue(const wchar_t* name,
void* data,
DWORD* dsize,
DWORD* dtype) const {
LONG result = RegQueryValueExW(key_, name, 0, dtype,
reinterpret_cast<LPBYTE>(data), dsize);
return result;
}
private:
HKEY key_;
REGSAM wow64access_;
};
} // namespace
#endif // !defined(WINUWP)
namespace rtc {
namespace rtc_win {
namespace {
// Helper to map a major.minor.x.build version (e.g. 6.1) to a Windows release.
Version MajorMinorBuildToVersion(int major, int minor, int build) {
if ((major == 5) && (minor > 0)) {
// Treat XP Pro x64, Home Server, and Server 2003 R2 as Server 2003.
return (minor == 1) ? VERSION_XP : VERSION_SERVER_2003;
} else if (major == 6) {
switch (minor) {
case 0:
// Treat Windows Server 2008 the same as Windows Vista.
return VERSION_VISTA;
case 1:
// Treat Windows Server 2008 R2 the same as Windows 7.
return VERSION_WIN7;
case 2:
// Treat Windows Server 2012 the same as Windows 8.
return VERSION_WIN8;
default:
RTC_DCHECK_EQ(minor, 3);
return VERSION_WIN8_1;
}
} else if (major == 10) {
if (build < 10586) {
return VERSION_WIN10;
} else if (build < 14393) {
return VERSION_WIN10_TH2;
} else if (build < 15063) {
return VERSION_WIN10_RS1;
} else if (build < 16299) {
return VERSION_WIN10_RS2;
} else if (build < 17134) {
return VERSION_WIN10_RS3;
} else {
return VERSION_WIN10_RS4;
}
} else if (major > 6) {
RTC_NOTREACHED();
return VERSION_WIN_LAST;
}
return VERSION_PRE_XP;
}
// Returns the the "UBR" value from the registry. Introduced in Windows 10,
// this undocumented value appears to be similar to a patch number.
// Returns 0 if the value does not exist or it could not be read.
int GetUBR() {
#if defined(WINUWP)
// The registry is not accessible for WinUWP sandboxed store applications.
return 0;
#else
// The values under the CurrentVersion registry hive are mirrored under
// the corresponding Wow6432 hive.
static constexpr wchar_t kRegKeyWindowsNTCurrentVersion[] =
L"SOFTWARE\\Microsoft\\Windows NT\\CurrentVersion";
RegKey key;
if (key.Open(HKEY_LOCAL_MACHINE, kRegKeyWindowsNTCurrentVersion,
KEY_QUERY_VALUE) != ERROR_SUCCESS) {
return 0;
}
DWORD ubr = 0;
key.ReadValueDW(L"UBR", &ubr);
return static_cast<int>(ubr);
#endif // defined(WINUWP)
}
} // namespace
// 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 class 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())) {
OSVERSIONINFOEXW version_info = {sizeof version_info};
// Applications not manifested for Windows 8.1 or Windows 10 will return the
// Windows 8 OS version value (6.2). Once an application is manifested for a
// given operating system version, GetVersionEx() will always return the
// version that the application is manifested for in future releases.
// https://docs.microsoft.com/en-us/windows/desktop/SysInfo/targeting-your-application-at-windows-8-1.
// https://www.codeproject.com/Articles/678606/Part-Overcoming-Windows-s-deprecation-of-GetVe.
::GetVersionExW(reinterpret_cast<OSVERSIONINFOW*>(&version_info));
version_number_.major = version_info.dwMajorVersion;
version_number_.minor = version_info.dwMinorVersion;
version_number_.build = version_info.dwBuildNumber;
version_number_.patch = GetUBR();
version_ = MajorMinorBuildToVersion(
version_number_.major, version_number_.minor, version_number_.build);
service_pack_.major = version_info.wServicePackMajor;
service_pack_.minor = version_info.wServicePackMinor;
service_pack_str_ = rtc::ToUtf8(version_info.szCSDVersion);
SYSTEM_INFO system_info = {};
::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;
#if !defined(WINUWP)
GetProductInfoPtr get_product_info;
DWORD os_type;
if (version_info.dwMajorVersion == 6 || version_info.dwMajorVersion == 10) {
// Only present on Vista+.
get_product_info = reinterpret_cast<GetProductInfoPtr>(::GetProcAddress(
::GetModuleHandleW(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:
version_type_ = SUITE_PROFESSIONAL;
break;
case PRODUCT_ENTERPRISE:
case PRODUCT_ENTERPRISE_E:
case PRODUCT_ENTERPRISE_EVALUATION:
case PRODUCT_ENTERPRISE_N:
case PRODUCT_ENTERPRISE_N_EVALUATION:
case PRODUCT_ENTERPRISE_S:
case PRODUCT_ENTERPRISE_S_EVALUATION:
case PRODUCT_ENTERPRISE_S_N:
case PRODUCT_ENTERPRISE_S_N_EVALUATION:
case PRODUCT_BUSINESS:
case PRODUCT_BUSINESS_N:
version_type_ = SUITE_ENTERPRISE;
break;
case PRODUCT_EDUCATION:
case PRODUCT_EDUCATION_N:
version_type_ = SUITE_EDUCATION;
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;
}
#else
// WinUWP sandboxed store apps do not have a mechanism to determine
// product suite thus the most restricted suite is chosen.
version_type_ = SUITE_HOME;
#endif // !defined(WINUWP)
}
OSInfo::~OSInfo() {}
std::string OSInfo::processor_model_name() {
#if defined(WINUWP)
// WinUWP sandboxed store apps do not have the ability to
// probe the name of the current processor.
return "Unknown Processor (UWP)";
#else
if (processor_model_name_.empty()) {
const wchar_t kProcessorNameString[] =
L"HARDWARE\\DESCRIPTION\\System\\CentralProcessor\\0";
RegKey key(HKEY_LOCAL_MACHINE, kProcessorNameString, KEY_READ);
std::wstring value;
key.ReadValue(L"ProcessorNameString", &value);
processor_model_name_ = rtc::ToUtf8(value);
}
return processor_model_name_;
#endif // defined(WINUWP)
}
// static
OSInfo::WOW64Status OSInfo::GetWOW64StatusForProcess(HANDLE process_handle) {
BOOL is_wow64;
#if defined(WINUWP)
if (!IsWow64Process(process_handle, &is_wow64))
return WOW64_UNKNOWN;
#else
typedef BOOL(WINAPI * IsWow64ProcessFunc)(HANDLE, PBOOL);
IsWow64ProcessFunc is_wow64_process = reinterpret_cast<IsWow64ProcessFunc>(
GetProcAddress(GetModuleHandleW(L"kernel32.dll"), "IsWow64Process"));
if (!is_wow64_process)
return WOW64_DISABLED;
if (!(*is_wow64_process)(process_handle, &is_wow64))
return WOW64_UNKNOWN;
#endif // defined(WINUWP)
return is_wow64 ? WOW64_ENABLED : WOW64_DISABLED;
}
Version GetVersion() {
return OSInfo::GetInstance()->version();
}
} // namespace rtc_win
} // namespace rtc