• file
• revisions
• annotate
• diff
• comparison
• raw

security/sandbox/chromium/base/win/windows_version.cc@b8a032363ba2 (annotated)

security/sandbox/chromium/base/win/windows_version.cc

Thu, 22 Jan 2015 13:21:57 +0100

author

Michael Schloh von Bennewitz <michael@schloh.com>

date

Thu, 22 Jan 2015 13:21:57 +0100

branch

TOR_BUG_9701

changeset 15

b8a032363ba2

permissions

-rw-r--r--

Incorporate requested changes from Mozilla in review:
https://bugzilla.mozilla.org/show_bug.cgi?id=1123480#c6

michael@0	1	// Copyright (c) 2012 The Chromium Authors. All rights reserved.
michael@0	2	// Use of this source code is governed by a BSD-style license that can be
michael@0	3	// found in the LICENSE file.
michael@0	4
michael@0	5	#include "base/win/windows_version.h"
michael@0	6
michael@0	7	#include <windows.h>
michael@0	8
michael@0	9	#include "base/logging.h"
michael@0	10	#include "base/strings/utf_string_conversions.h"
michael@0	11	#include "base/win/registry.h"
michael@0	12
michael@0	13	namespace base {
michael@0	14	namespace win {
michael@0	15
michael@0	16	// static
michael@0	17	OSInfo* OSInfo::GetInstance() {
michael@0	18	// Note: we don't use the Singleton class because it depends on AtExitManager,
michael@0	19	// and it's convenient for other modules to use this classs without it. This
michael@0	20	// pattern is copied from gurl.cc.
michael@0	21	static OSInfo* info;
michael@0	22	if (!info) {
michael@0	23	OSInfo* new_info = new OSInfo();
michael@0	24	if (InterlockedCompareExchangePointer(
michael@0	25	reinterpret_cast<PVOID*>(&info), new_info, NULL)) {
michael@0	26	delete new_info;
michael@0	27	}
michael@0	28	}
michael@0	29	return info;
michael@0	30	}
michael@0	31
michael@0	32	OSInfo::OSInfo()
michael@0	33	: version_(VERSION_PRE_XP),
michael@0	34	architecture_(OTHER_ARCHITECTURE),
michael@0	35	wow64_status_(GetWOW64StatusForProcess(GetCurrentProcess())) {
michael@0	36	OSVERSIONINFOEX version_info = { sizeof version_info };
michael@0	37	GetVersionEx(reinterpret_cast<OSVERSIONINFO*>(&version_info));
michael@0	38	version_number_.major = version_info.dwMajorVersion;
michael@0	39	version_number_.minor = version_info.dwMinorVersion;
michael@0	40	version_number_.build = version_info.dwBuildNumber;
michael@0	41	if ((version_number_.major == 5) && (version_number_.minor > 0)) {
michael@0	42	// Treat XP Pro x64, Home Server, and Server 2003 R2 as Server 2003.
michael@0	43	version_ = (version_number_.minor == 1) ? VERSION_XP : VERSION_SERVER_2003;
michael@0	44	} else if (version_number_.major == 6) {
michael@0	45	switch (version_number_.minor) {
michael@0	46	case 0:
michael@0	47	// Treat Windows Server 2008 the same as Windows Vista.
michael@0	48	version_ = VERSION_VISTA;
michael@0	49	break;
michael@0	50	case 1:
michael@0	51	// Treat Windows Server 2008 R2 the same as Windows 7.
michael@0	52	version_ = VERSION_WIN7;
michael@0	53	break;
michael@0	54	case 2:
michael@0	55	// Treat Windows Server 2012 the same as Windows 8.
michael@0	56	version_ = VERSION_WIN8;
michael@0	57	break;
michael@0	58	default:
michael@0	59	DCHECK_EQ(version_number_.minor, 3);
michael@0	60	version_ = VERSION_WIN8_1;
michael@0	61	break;
michael@0	62	}
michael@0	63	} else if (version_number_.major > 6) {
michael@0	64	NOTREACHED();
michael@0	65	version_ = VERSION_WIN_LAST;
michael@0	66	}
michael@0	67	service_pack_.major = version_info.wServicePackMajor;
michael@0	68	service_pack_.minor = version_info.wServicePackMinor;
michael@0	69
michael@0	70	SYSTEM_INFO system_info = { 0 };
michael@0	71	GetNativeSystemInfo(&system_info);
michael@0	72	switch (system_info.wProcessorArchitecture) {
michael@0	73	case PROCESSOR_ARCHITECTURE_INTEL: architecture_ = X86_ARCHITECTURE; break;
michael@0	74	case PROCESSOR_ARCHITECTURE_AMD64: architecture_ = X64_ARCHITECTURE; break;
michael@0	75	case PROCESSOR_ARCHITECTURE_IA64: architecture_ = IA64_ARCHITECTURE; break;
michael@0	76	}
michael@0	77	processors_ = system_info.dwNumberOfProcessors;
michael@0	78	allocation_granularity_ = system_info.dwAllocationGranularity;
michael@0	79	}
michael@0	80
michael@0	81	OSInfo::~OSInfo() {
michael@0	82	}
michael@0	83
michael@0	84	std::string OSInfo::processor_model_name() {
michael@0	85	if (processor_model_name_.empty()) {
michael@0	86	const wchar_t kProcessorNameString[] =
michael@0	87	L"HARDWARE\\DESCRIPTION\\System\\CentralProcessor\\0";
michael@0	88	base::win::RegKey key(HKEY_LOCAL_MACHINE, kProcessorNameString, KEY_READ);
michael@0	89	string16 value;
michael@0	90	key.ReadValue(L"ProcessorNameString", &value);
michael@0	91	processor_model_name_ = UTF16ToUTF8(value);
michael@0	92	}
michael@0	93	return processor_model_name_;
michael@0	94	}
michael@0	95
michael@0	96	// static
michael@0	97	OSInfo::WOW64Status OSInfo::GetWOW64StatusForProcess(HANDLE process_handle) {
michael@0	98	typedef BOOL (WINAPI* IsWow64ProcessFunc)(HANDLE, PBOOL);
michael@0	99	IsWow64ProcessFunc is_wow64_process = reinterpret_cast<IsWow64ProcessFunc>(
michael@0	100	GetProcAddress(GetModuleHandle(L"kernel32.dll"), "IsWow64Process"));
michael@0	101	if (!is_wow64_process)
michael@0	102	return WOW64_DISABLED;
michael@0	103	BOOL is_wow64 = FALSE;
michael@0	104	if (!(*is_wow64_process)(process_handle, &is_wow64))
michael@0	105	return WOW64_UNKNOWN;
michael@0	106	return is_wow64 ? WOW64_ENABLED : WOW64_DISABLED;
michael@0	107	}
michael@0	108
michael@0	109	Version GetVersion() {
michael@0	110	return OSInfo::GetInstance()->version();
michael@0	111	}
michael@0	112
michael@0	113	} // namespace win
michael@0	114	} // namespace base