1.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000
1.2 +++ b/security/sandbox/chromium/base/win/windows_version.cc Wed Dec 31 06:09:35 2014 +0100
1.3 @@ -0,0 +1,114 @@
1.4 +// Copyright (c) 2012 The Chromium Authors. All rights reserved.
1.5 +// Use of this source code is governed by a BSD-style license that can be
1.6 +// found in the LICENSE file.
1.7 +
1.8 +#include "base/win/windows_version.h"
1.9 +
1.10 +#include <windows.h>
1.11 +
1.12 +#include "base/logging.h"
1.13 +#include "base/strings/utf_string_conversions.h"
1.14 +#include "base/win/registry.h"
1.15 +
1.16 +namespace base {
1.17 +namespace win {
1.18 +
1.19 +// static
1.20 +OSInfo* OSInfo::GetInstance() {
1.21 + // Note: we don't use the Singleton class because it depends on AtExitManager,
1.22 + // and it's convenient for other modules to use this classs without it. This
1.23 + // pattern is copied from gurl.cc.
1.24 + static OSInfo* info;
1.25 + if (!info) {
1.26 + OSInfo* new_info = new OSInfo();
1.27 + if (InterlockedCompareExchangePointer(
1.28 + reinterpret_cast<PVOID*>(&info), new_info, NULL)) {
1.29 + delete new_info;
1.30 + }
1.31 + }
1.32 + return info;
1.33 +}
1.34 +
1.35 +OSInfo::OSInfo()
1.36 + : version_(VERSION_PRE_XP),
1.37 + architecture_(OTHER_ARCHITECTURE),
1.38 + wow64_status_(GetWOW64StatusForProcess(GetCurrentProcess())) {
1.39 + OSVERSIONINFOEX version_info = { sizeof version_info };
1.40 + GetVersionEx(reinterpret_cast<OSVERSIONINFO*>(&version_info));
1.41 + version_number_.major = version_info.dwMajorVersion;
1.42 + version_number_.minor = version_info.dwMinorVersion;
1.43 + version_number_.build = version_info.dwBuildNumber;
1.44 + if ((version_number_.major == 5) && (version_number_.minor > 0)) {
1.45 + // Treat XP Pro x64, Home Server, and Server 2003 R2 as Server 2003.
1.46 + version_ = (version_number_.minor == 1) ? VERSION_XP : VERSION_SERVER_2003;
1.47 + } else if (version_number_.major == 6) {
1.48 + switch (version_number_.minor) {
1.49 + case 0:
1.50 + // Treat Windows Server 2008 the same as Windows Vista.
1.51 + version_ = VERSION_VISTA;
1.52 + break;
1.53 + case 1:
1.54 + // Treat Windows Server 2008 R2 the same as Windows 7.
1.55 + version_ = VERSION_WIN7;
1.56 + break;
1.57 + case 2:
1.58 + // Treat Windows Server 2012 the same as Windows 8.
1.59 + version_ = VERSION_WIN8;
1.60 + break;
1.61 + default:
1.62 + DCHECK_EQ(version_number_.minor, 3);
1.63 + version_ = VERSION_WIN8_1;
1.64 + break;
1.65 + }
1.66 + } else if (version_number_.major > 6) {
1.67 + NOTREACHED();
1.68 + version_ = VERSION_WIN_LAST;
1.69 + }
1.70 + service_pack_.major = version_info.wServicePackMajor;
1.71 + service_pack_.minor = version_info.wServicePackMinor;
1.72 +
1.73 + SYSTEM_INFO system_info = { 0 };
1.74 + GetNativeSystemInfo(&system_info);
1.75 + switch (system_info.wProcessorArchitecture) {
1.76 + case PROCESSOR_ARCHITECTURE_INTEL: architecture_ = X86_ARCHITECTURE; break;
1.77 + case PROCESSOR_ARCHITECTURE_AMD64: architecture_ = X64_ARCHITECTURE; break;
1.78 + case PROCESSOR_ARCHITECTURE_IA64: architecture_ = IA64_ARCHITECTURE; break;
1.79 + }
1.80 + processors_ = system_info.dwNumberOfProcessors;
1.81 + allocation_granularity_ = system_info.dwAllocationGranularity;
1.82 +}
1.83 +
1.84 +OSInfo::~OSInfo() {
1.85 +}
1.86 +
1.87 +std::string OSInfo::processor_model_name() {
1.88 + if (processor_model_name_.empty()) {
1.89 + const wchar_t kProcessorNameString[] =
1.90 + L"HARDWARE\\DESCRIPTION\\System\\CentralProcessor\\0";
1.91 + base::win::RegKey key(HKEY_LOCAL_MACHINE, kProcessorNameString, KEY_READ);
1.92 + string16 value;
1.93 + key.ReadValue(L"ProcessorNameString", &value);
1.94 + processor_model_name_ = UTF16ToUTF8(value);
1.95 + }
1.96 + return processor_model_name_;
1.97 +}
1.98 +
1.99 +// static
1.100 +OSInfo::WOW64Status OSInfo::GetWOW64StatusForProcess(HANDLE process_handle) {
1.101 + typedef BOOL (WINAPI* IsWow64ProcessFunc)(HANDLE, PBOOL);
1.102 + IsWow64ProcessFunc is_wow64_process = reinterpret_cast<IsWow64ProcessFunc>(
1.103 + GetProcAddress(GetModuleHandle(L"kernel32.dll"), "IsWow64Process"));
1.104 + if (!is_wow64_process)
1.105 + return WOW64_DISABLED;
1.106 + BOOL is_wow64 = FALSE;
1.107 + if (!(*is_wow64_process)(process_handle, &is_wow64))
1.108 + return WOW64_UNKNOWN;
1.109 + return is_wow64 ? WOW64_ENABLED : WOW64_DISABLED;
1.110 +}
1.111 +
1.112 +Version GetVersion() {
1.113 + return OSInfo::GetInstance()->version();
1.114 +}
1.115 +
1.116 +} // namespace win
1.117 +} // namespace base
