src/OSSupport_Win32.cpp

   1 ///////////////////////////////////////////////////////////////////////////////
   2 // MuldeR's Utilities for Qt
   3 // Copyright (C) 2004-2018 LoRd_MuldeR <MuldeR2@GMX.de>
   4 //
   5 // This library is free software; you can redistribute it and/or
   6 // modify it under the terms of the GNU Lesser General Public
   7 // License as published by the Free Software Foundation; either
   8 // version 2.1 of the License, or (at your option) any later version.
   9 //
  10 // This library is distributed in the hope that it will be useful,
  11 // but WITHOUT ANY WARRANTY; without even the implied warranty of
  12 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  13 // Lesser General Public License for more details.
  14 //
  15 // You should have received a copy of the GNU Lesser General Public
  16 // License along with this library; if not, write to the Free Software
  17 // Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
  18 //
  19 // http://www.gnu.org/licenses/lgpl-2.1.txt
  20 //////////////////////////////////////////////////////////////////////////////////
  21
  22 //Win32 API
  23 #define WIN32_LEAN_AND_MEAN 1
  24 #include <Windows.h>
  25 #include <Psapi.h>
  26 #include <Sensapi.h>
  27 #include <Shellapi.h>
  28 #include <PowrProf.h>
  29 #include <Mmsystem.h>
  30 #include <WinIoCtl.h>
  31 #pragma warning(push)
  32 #pragma warning(disable:4091) //for MSVC2015
  33 #include <ShlObj.h>
  34 #pragma warning(pop)
  35
  36 //CRT
  37 #include <io.h>
  38
  39 //Internal
  40 #include <MUtils/Global.h>
  41 #include <MUtils/OSSupport.h>
  42 #include <MUtils/GUI.h>
  43 #include "CriticalSection_Win32.h"
  44 #include "Utils_Win32.h"
  45
  46 //Qt
  47 #include <QMap>
  48 #include <QReadWriteLock>
  49 #include <QDir>
  50 #include <QWidget>
  51 #include <QProcess>
  52 #include <QSet>
  53
  54 //Main thread ID
  55 static const DWORD g_main_thread_id = GetCurrentThreadId();
  56
  57 ///////////////////////////////////////////////////////////////////////////////
  58 // SYSTEM MESSAGE
  59 ///////////////////////////////////////////////////////////////////////////////
  60
  61 static const UINT g_msgBoxFlags = MB_TOPMOST | MB_TASKMODAL | MB_SETFOREGROUND;
  62
  63 void MUtils::OS::system_message_nfo(const wchar_t *const title, const wchar_t *const text)
  64 {
  65         MessageBoxW(NULL, text, title, g_msgBoxFlags | MB_ICONINFORMATION);
  66 }
  67
  68 void MUtils::OS::system_message_wrn(const wchar_t *const title, const wchar_t *const text)
  69 {
  70         MessageBoxW(NULL, text, title, g_msgBoxFlags | MB_ICONWARNING);
  71 }
  72
  73 void MUtils::OS::system_message_err(const wchar_t *const title, const wchar_t *const text)
  74 {
  75         MessageBoxW(NULL, text, title, g_msgBoxFlags | MB_ICONERROR);
  76 }
  77
  78 ///////////////////////////////////////////////////////////////////////////////
  79 // FETCH CLI ARGUMENTS
  80 ///////////////////////////////////////////////////////////////////////////////
  81
  82 static QReadWriteLock                          g_arguments_lock;
  83 static QScopedPointer<MUtils::OS::ArgumentMap> g_arguments_list;
  84
  85 const QStringList MUtils::OS::crack_command_line(const QString &command_line)
  86 {
  87         int nArgs = 0;
  88         LPWSTR *szArglist = CommandLineToArgvW(command_line.isNull() ? GetCommandLineW() : MUTILS_WCHR(command_line), &nArgs);
  89
  90         QStringList command_line_tokens;
  91         if(NULL != szArglist)
  92         {
  93                 for(int i = 0; i < nArgs; i++)
  94                 {
  95                         const QString argStr = MUTILS_QSTR(szArglist[i]).trimmed();
  96                         if(!argStr.isEmpty())
  97                         {
  98                                 command_line_tokens << argStr;
  99                         }
 100                 }
 101                 LocalFree(szArglist);
 102         }
 103
 104         return command_line_tokens;
 105 }
 106
 107 const MUtils::OS::ArgumentMap &MUtils::OS::arguments(void)
 108 {
 109         QReadLocker readLock(&g_arguments_lock);
 110
 111         //Already initialized?
 112         if(!g_arguments_list.isNull())
 113         {
 114                 return (*(g_arguments_list.data()));
 115         }
 116
 117         readLock.unlock();
 118         QWriteLocker writeLock(&g_arguments_lock);
 119
 120         //Still not initialized?
 121         if(!g_arguments_list.isNull())
 122         {
 123                 return (*(g_arguments_list.data()));
 124         }
 125
 126         g_arguments_list.reset(new ArgumentMap());
 127         const QStringList argList = crack_command_line();
 128
 129         if(!argList.isEmpty())
 130         {
 131                 const QString argPrefix = QLatin1String("--");
 132                 const QChar   separator = QLatin1Char('=');
 133
 134                 bool firstToken = true;
 135                 for(QStringList::ConstIterator iter = argList.constBegin(); iter != argList.constEnd(); iter++)
 136                 {
 137                         if(firstToken)
 138                         {
 139                                 firstToken = false;
 140                                 continue; /*skip executable file name*/
 141                         }
 142                         if(iter->startsWith(argPrefix))
 143                         {
 144                                 const QString argData = iter->mid(2).trimmed();
 145                                 if(argData.length() > 0)
 146                                 {
 147                                         const int separatorIndex = argData.indexOf(separator);
 148                                         if(separatorIndex > 0)
 149                                         {
 150                                                 const QString argKey = argData.left(separatorIndex).trimmed();
 151                                                 const QString argVal = argData.mid(separatorIndex + 1).trimmed();
 152                                                 g_arguments_list->insertMulti(argKey.toLower(), argVal);
 153                                         }
 154                                         else
 155                                         {
 156                                                 g_arguments_list->insertMulti(argData.toLower(), QString());
 157                                         }
 158                                 }
 159                         }
 160                 }
 161         }
 162         else if(argList.empty())
 163         {
 164                 qWarning("CommandLineToArgvW() has failed !!!");
 165         }
 166
 167         return (*(g_arguments_list.data()));
 168 }
 169
 170 ///////////////////////////////////////////////////////////////////////////////
 171 // COPY FILE
 172 ///////////////////////////////////////////////////////////////////////////////
 173
 174 typedef struct _progress_callback_data_t
 175 {
 176         MUtils::OS::progress_callback_t callback_function;
 177         void *user_data;
 178 }
 179 progress_callback_data_t;
 180
 181 static DWORD __stdcall copy_file_progress(LARGE_INTEGER TotalFileSize, LARGE_INTEGER TotalBytesTransferred, LARGE_INTEGER StreamSize, LARGE_INTEGER StreamBytesTransferred, DWORD dwStreamNumber, DWORD dwCallbackReason, HANDLE hSourceFile, HANDLE hDestinationFile, LPVOID lpData)
 182 {
 183         if(const progress_callback_data_t *data = (progress_callback_data_t*) lpData)
 184         {
 185                 const double progress = qBound(0.0, double(TotalBytesTransferred.QuadPart) / double(TotalFileSize.QuadPart), 1.0);
 186                 return data->callback_function(progress, data->user_data) ? PROGRESS_CONTINUE : PROGRESS_CANCEL;
 187         }
 188         return PROGRESS_CONTINUE;
 189 }
 190
 191 MUTILS_API bool MUtils::OS::copy_file(const QString &sourcePath, const QString &outputPath, const bool &overwrite, const progress_callback_t callback, void *const userData)
 192 {
 193         progress_callback_data_t callback_data = { callback, userData };
 194         BOOL cancel = FALSE;
 195         const BOOL result = CopyFileExW(MUTILS_WCHR(QDir::toNativeSeparators(sourcePath)), MUTILS_WCHR(QDir::toNativeSeparators(outputPath)), ((callback_data.callback_function) ? copy_file_progress : NULL), ((callback_data.callback_function) ? &callback_data : NULL), &cancel, (overwrite ? 0 : COPY_FILE_FAIL_IF_EXISTS));
 196
 197         if(result == FALSE)
 198         {
 199                 const DWORD errorCode = GetLastError();
 200                 if(errorCode != ERROR_REQUEST_ABORTED)
 201                 {
 202                         qWarning("CopyFile() failed with error code 0x%08X!", errorCode);
 203                 }
 204                 else
 205                 {
 206                         qWarning("CopyFile() operation was abroted by user!");
 207                 }
 208         }
 209
 210         return (result != FALSE);
 211 }
 212
 213 ///////////////////////////////////////////////////////////////////////////////
 214 // GET FILE VERSION
 215 ///////////////////////////////////////////////////////////////////////////////
 216
 217 static bool get_file_version_helper(const QString fileName, PVOID buffer, const size_t &size, quint16 *const major, quint16 *const minor, quint16 *const patch, quint16 *const build)
 218 {
 219         if(!GetFileVersionInfo(MUTILS_WCHR(fileName), 0, size, buffer))
 220         {
 221                 qWarning("GetFileVersionInfo() has failed, file version cannot be determined!");
 222                 return false;
 223         }
 224
 225         VS_FIXEDFILEINFO *verInfo;
 226         UINT verInfoLen;
 227         if(!VerQueryValue(buffer, L"\\", (LPVOID*)(&verInfo), &verInfoLen))
 228         {
 229                 qWarning("VerQueryValue() has failed, file version cannot be determined!");
 230                 return false;
 231         }
 232
 233         if(major) *major = quint16((verInfo->dwFileVersionMS >> 16) & 0x0000FFFF);
 234         if(minor) *minor = quint16((verInfo->dwFileVersionMS)       & 0x0000FFFF);
 235         if(patch) *patch = quint16((verInfo->dwFileVersionLS >> 16) & 0x0000FFFF);
 236         if(build) *build = quint16((verInfo->dwFileVersionLS)       & 0x0000FFFF);
 237
 238         return true;
 239 }
 240
 241 bool MUtils::OS::get_file_version(const QString fileName, quint16 *const major, quint16 *const minor, quint16 *const patch, quint16 *const build)
 242 {
 243         if(major) *major = 0U; if(minor) *minor = 0U;
 244         if(patch) *patch = 0U; if(build) *build = 0U;
 245
 246         const DWORD size = GetFileVersionInfoSize(MUTILS_WCHR(fileName), NULL);
 247         if(size < 1)
 248         {
 249                 qWarning("GetFileVersionInfoSize() has failed, file version cannot be determined!");
 250                 return false;
 251         }
 252
 253         PVOID buffer = _malloca(size);
 254         if(!buffer)
 255         {
 256                 qWarning("Memory allocation has failed!");
 257                 return false;
 258         }
 259
 260         const bool success = get_file_version_helper(fileName, buffer, size, major, minor, patch, build);
 261
 262         _freea(buffer);
 263         return success;
 264 }
 265
 266 ///////////////////////////////////////////////////////////////////////////////
 267 // OS VERSION DETECTION
 268 ///////////////////////////////////////////////////////////////////////////////
 269
 270 static bool g_os_version_initialized = false;
 271 static MUtils::OS::Version::os_version_t g_os_version_info = MUtils::OS::Version::UNKNOWN_OPSYS;
 272 static QReadWriteLock g_os_version_lock;
 273
 274 //Maps marketing names to the actual Windows NT versions
 275 static const struct
 276 {
 277         MUtils::OS::Version::os_version_t version;
 278         const char friendlyName[64];
 279 }
 280 g_os_version_lut[] =
 281 {
 282         { MUtils::OS::Version::WINDOWS_WIN2K, "Windows 2000"                                  },        //2000
 283         { MUtils::OS::Version::WINDOWS_WINXP, "Windows XP or Windows XP Media Center Edition" },        //XP
 284         { MUtils::OS::Version::WINDOWS_XPX64, "Windows Server 2003 or Windows XP x64"         },        //XP_x64
 285         { MUtils::OS::Version::WINDOWS_VISTA, "Windows Vista or Windows Server 2008"          },        //Vista
 286         { MUtils::OS::Version::WINDOWS_WIN70, "Windows 7 or Windows Server 2008 R2"           },        //7
 287         { MUtils::OS::Version::WINDOWS_WIN80, "Windows 8 or Windows Server 2012"              },        //8
 288         { MUtils::OS::Version::WINDOWS_WIN81, "Windows 8.1 or Windows Server 2012 R2"         },        //8.1
 289         { MUtils::OS::Version::WINDOWS_WN100, "Windows 10 or Windows Server 2016"             },        //10
 290         { MUtils::OS::Version::UNKNOWN_OPSYS, "N/A" }
 291 };
 292
 293 //OS version data dtructures
 294 namespace MUtils
 295 {
 296         namespace OS
 297         {
 298                 namespace Version
 299                 {
 300                         //Comparision operators for os_version_t
 301                         bool os_version_t::operator== (const os_version_t &rhs) const { return (type == rhs.type) && (versionMajor == rhs.versionMajor) && ((versionMinor == rhs.versionMinor)); }
 302                         bool os_version_t::operator!= (const os_version_t &rhs) const { return (type != rhs.type) || (versionMajor != rhs.versionMajor) || ((versionMinor != rhs.versionMinor)); }
 303                         bool os_version_t::operator>  (const os_version_t &rhs) const { return (type == rhs.type) && ((versionMajor > rhs.versionMajor) || ((versionMajor == rhs.versionMajor) && (versionMinor >  rhs.versionMinor))); }
 304                         bool os_version_t::operator>= (const os_version_t &rhs) const { return (type == rhs.type) && ((versionMajor > rhs.versionMajor) || ((versionMajor == rhs.versionMajor) && (versionMinor >= rhs.versionMinor))); }
 305                         bool os_version_t::operator<  (const os_version_t &rhs) const { return (type == rhs.type) && ((versionMajor < rhs.versionMajor) || ((versionMajor == rhs.versionMajor) && (versionMinor <  rhs.versionMinor))); }
 306                         bool os_version_t::operator<= (const os_version_t &rhs) const { return (type == rhs.type) && ((versionMajor < rhs.versionMajor) || ((versionMajor == rhs.versionMajor) && (versionMinor <= rhs.versionMinor))); }
 307
 308                         //Known Windows NT versions
 309                         const os_version_t WINDOWS_WIN2K = { OS_WINDOWS,  5, 0,  2195, 0 };     // 2000
 310                         const os_version_t WINDOWS_WINXP = { OS_WINDOWS,  5, 1,  2600, 0 };     // XP
 311                         const os_version_t WINDOWS_XPX64 = { OS_WINDOWS,  5, 2,  3790, 0 };     // XP_x64
 312                         const os_version_t WINDOWS_VISTA = { OS_WINDOWS,  6, 0,  6000, 0 };     // Vista
 313                         const os_version_t WINDOWS_WIN70 = { OS_WINDOWS,  6, 1,  7600, 0 };     // 7
 314                         const os_version_t WINDOWS_WIN80 = { OS_WINDOWS,  6, 2,  9200, 0 };     // 8
 315                         const os_version_t WINDOWS_WIN81 = { OS_WINDOWS,  6, 3,  9600, 0 };     // 8.1
 316                         const os_version_t WINDOWS_WN100 = { OS_WINDOWS, 10, 0, 10240, 0 };     // 10
 317
 318                         //Unknown OS
 319                         const os_version_t UNKNOWN_OPSYS = { OS_UNKNOWN, 0,  0,     0, 0 };     // N/A
 320                 }
 321         }
 322 }
 323
 324 static inline DWORD SAFE_ADD(const DWORD &a, const DWORD &b, const DWORD &limit = MAXDWORD)
 325 {
 326         return ((a >= limit) || (b >= limit) || ((limit - a) <= b)) ? limit : (a + b);
 327 }
 328
 329
 330 static void initialize_os_version(OSVERSIONINFOEXW *const osInfo)
 331 {
 332         memset(osInfo, 0, sizeof(OSVERSIONINFOEXW));
 333         osInfo->dwOSVersionInfoSize = sizeof(OSVERSIONINFOEXW);
 334 }
 335
 336 static inline DWORD initialize_step_size(const DWORD &limit)
 337 {
 338         DWORD result = 1;
 339         while (result < limit)
 340         {
 341                 result = SAFE_ADD(result, result);
 342         }
 343         return result;
 344 }
 345
 346 static bool rtl_get_version(OSVERSIONINFOEXW *const osInfo)
 347 {
 348         typedef LONG(__stdcall *RtlGetVersion)(LPOSVERSIONINFOEXW);
 349         if (const HMODULE ntdll = GetModuleHandleW(L"ntdll"))
 350         {
 351                 if (const RtlGetVersion pRtlGetVersion = (RtlGetVersion)GetProcAddress(ntdll, "RtlGetVersion"))
 352                 {
 353                         initialize_os_version(osInfo);
 354                         if (pRtlGetVersion(osInfo) == 0)
 355                         {
 356                                 return true;
 357                         }
 358                 }
 359         }
 360
 361         //Fallback
 362         initialize_os_version(osInfo);
 363         return (GetVersionExW((LPOSVERSIONINFOW)osInfo) != FALSE);
 364 }
 365
 366 static bool rtl_verify_version(OSVERSIONINFOEXW *const osInfo, const ULONG typeMask, const ULONGLONG condMask)
 367 {
 368         typedef LONG(__stdcall *RtlVerifyVersionInfo)(LPOSVERSIONINFOEXW, ULONG, ULONGLONG);
 369         if (const HMODULE ntdll = GetModuleHandleW(L"ntdll"))
 370         {
 371                 if (const RtlVerifyVersionInfo pRtlVerifyVersionInfo = (RtlVerifyVersionInfo)GetProcAddress(ntdll, "RtlVerifyVersionInfo"))
 372                 {
 373                         if (pRtlVerifyVersionInfo(osInfo, typeMask, condMask) == 0)
 374                         {
 375                                 return true;
 376                         }
 377                 }
 378         }
 379
 380         //Fallback
 381         return (VerifyVersionInfoW(osInfo, typeMask, condMask) != FALSE);
 382 }
 383
 384 static bool verify_os_version(const DWORD major, const DWORD minor)
 385 {
 386         OSVERSIONINFOEXW osvi;
 387         DWORDLONG dwlConditionMask = 0;
 388         initialize_os_version(&osvi);
 389
 390         //Initialize the OSVERSIONINFOEX structure
 391         osvi.dwMajorVersion = major;
 392         osvi.dwMinorVersion = minor;
 393         osvi.dwPlatformId = VER_PLATFORM_WIN32_NT;
 394
 395         //Initialize the condition mask
 396         VER_SET_CONDITION(dwlConditionMask, VER_MAJORVERSION, VER_GREATER_EQUAL);
 397         VER_SET_CONDITION(dwlConditionMask, VER_MINORVERSION, VER_GREATER_EQUAL);
 398         VER_SET_CONDITION(dwlConditionMask, VER_PLATFORMID,   VER_EQUAL);
 399
 400         // Perform the test
 401         const BOOL ret = rtl_verify_version(&osvi, VER_MAJORVERSION | VER_MINORVERSION | VER_PLATFORMID, dwlConditionMask);
 402
 403         //Error checking
 404         if(!ret)
 405         {
 406                 if(GetLastError() != ERROR_OLD_WIN_VERSION)
 407                 {
 408                         qWarning("VerifyVersionInfo() system call has failed!");
 409                 }
 410         }
 411
 412         return (ret != FALSE);
 413 }
 414
 415 static bool verify_os_build(const DWORD build)
 416 {
 417         OSVERSIONINFOEXW osvi;
 418         DWORDLONG dwlConditionMask = 0;
 419         initialize_os_version(&osvi);
 420
 421         //Initialize the OSVERSIONINFOEX structure
 422         osvi.dwBuildNumber = build;
 423         osvi.dwPlatformId = VER_PLATFORM_WIN32_NT;
 424
 425         //Initialize the condition mask
 426         VER_SET_CONDITION(dwlConditionMask, VER_BUILDNUMBER, VER_GREATER_EQUAL);
 427         VER_SET_CONDITION(dwlConditionMask, VER_PLATFORMID, VER_EQUAL);
 428
 429         // Perform the test
 430         const BOOL ret = rtl_verify_version(&osvi, VER_BUILDNUMBER | VER_PLATFORMID, dwlConditionMask);
 431
 432         //Error checking
 433         if (!ret)
 434         {
 435                 if (GetLastError() != ERROR_OLD_WIN_VERSION)
 436                 {
 437                         qWarning("VerifyVersionInfo() system call has failed!");
 438                 }
 439         }
 440
 441         return (ret != FALSE);
 442 }
 443
 444 static bool verify_os_spack(const WORD spack)
 445 {
 446         OSVERSIONINFOEXW osvi;
 447         DWORDLONG dwlConditionMask = 0;
 448         initialize_os_version(&osvi);
 449
 450         //Initialize the OSVERSIONINFOEX structure
 451         osvi.wServicePackMajor = spack;
 452         osvi.dwPlatformId = VER_PLATFORM_WIN32_NT;
 453
 454         //Initialize the condition mask
 455         VER_SET_CONDITION(dwlConditionMask, VER_SERVICEPACKMAJOR, VER_GREATER_EQUAL);
 456         VER_SET_CONDITION(dwlConditionMask, VER_PLATFORMID, VER_EQUAL);
 457
 458         // Perform the test
 459         const BOOL ret = rtl_verify_version(&osvi, VER_SERVICEPACKMAJOR | VER_PLATFORMID, dwlConditionMask);
 460
 461         //Error checking
 462         if (!ret)
 463         {
 464                 if (GetLastError() != ERROR_OLD_WIN_VERSION)
 465                 {
 466                         qWarning("VerifyVersionInfo() system call has failed!");
 467                 }
 468         }
 469
 470         return (ret != FALSE);
 471 }
 472
 473 static bool get_real_os_version(unsigned int *const major, unsigned int *const minor, unsigned int *const build, unsigned int *const spack, bool *const pbOverride)
 474 {
 475         static const DWORD MAX_VERSION = MAXWORD;
 476         static const DWORD MAX_BUILDNO = MAXINT;
 477         static const DWORD MAX_SRVCPCK = MAXWORD;
 478
 479         *major = *minor = *build = *spack = 0U;
 480         *pbOverride = false;
 481
 482         //Initialize local variables
 483         OSVERSIONINFOEXW osvi;
 484         memset(&osvi, 0, sizeof(OSVERSIONINFOEXW));
 485         osvi.dwOSVersionInfoSize = sizeof(OSVERSIONINFOEXW);
 486
 487         //Try GetVersionEx() first
 488         if(rtl_get_version(&osvi) == FALSE)
 489         {
 490                 qWarning("GetVersionEx() has failed, cannot detect Windows version!");
 491                 return false;
 492         }
 493
 494         //Make sure we are running on NT
 495         if(osvi.dwPlatformId == VER_PLATFORM_WIN32_NT)
 496         {
 497                 *major = osvi.dwMajorVersion;
 498                 *minor = osvi.dwMinorVersion;
 499                 *build = osvi.dwBuildNumber;
 500                 *spack = osvi.wServicePackMajor;
 501         }
 502         else
 503         {
 504                 if (verify_os_version(4, 0))
 505                 {
 506                         *major = 4;
 507                         *build = 1381;
 508                         *pbOverride = true;
 509                 }
 510                 else
 511                 {
 512                         qWarning("Not running on Windows NT, unsupported operating system!");
 513                         return false;
 514                 }
 515         }
 516
 517         //Major Version
 518         for (DWORD nextMajor = (*major) + 1; nextMajor <= MAX_VERSION; nextMajor++)
 519         {
 520                 if (verify_os_version(nextMajor, 0))
 521                 {
 522                         *major = nextMajor;
 523                         *minor = 0;
 524                         *pbOverride = true;
 525                         continue;
 526                 }
 527                 break;
 528         }
 529
 530         //Minor Version
 531         for (DWORD nextMinor = (*minor) + 1; nextMinor <= MAX_VERSION; nextMinor++)
 532         {
 533                 if (verify_os_version((*major), nextMinor))
 534                 {
 535                         *minor = nextMinor;
 536                         *pbOverride = true;
 537                         continue;
 538                 }
 539                 break;
 540         }
 541
 542         //Build Version
 543         if (verify_os_build(SAFE_ADD((*build), 1, MAX_BUILDNO)))
 544         {
 545                 DWORD stepSize = initialize_step_size(MAX_BUILDNO);
 546                 for (DWORD nextBuildNo = SAFE_ADD((*build), stepSize, MAX_BUILDNO); (*build) < MAX_BUILDNO; nextBuildNo = SAFE_ADD((*build), stepSize, MAX_BUILDNO))
 547                 {
 548                         if (verify_os_build(nextBuildNo))
 549                         {
 550                                 *build = nextBuildNo;
 551                                 *pbOverride = true;
 552                                 continue;
 553                         }
 554                         if (stepSize > 1)
 555                         {
 556                                 stepSize = stepSize / 2;
 557                                 continue;
 558                         }
 559                         break;
 560                 }
 561         }
 562
 563         //Service Pack
 564         if (verify_os_spack(SAFE_ADD((*spack), 1, MAX_SRVCPCK)))
 565         {
 566                 DWORD stepSize = initialize_step_size(MAX_SRVCPCK);
 567                 for (DWORD nextSPackNo = SAFE_ADD((*spack), stepSize, MAX_SRVCPCK); (*spack) < MAX_SRVCPCK; nextSPackNo = SAFE_ADD((*spack), stepSize, MAX_SRVCPCK))
 568                 {
 569                         if (verify_os_spack(nextSPackNo))
 570                         {
 571                                 *build = nextSPackNo;
 572                                 *pbOverride = true;
 573                                 continue;
 574                         }
 575                         if (stepSize > 1)
 576                         {
 577                                 stepSize = stepSize / 2;
 578                                 continue;
 579                         }
 580                         break;
 581                 }
 582         }
 583
 584         return true;
 585 }
 586
 587 const MUtils::OS::Version::os_version_t &MUtils::OS::os_version(void)
 588 {
 589         QReadLocker readLock(&g_os_version_lock);
 590
 591         //Already initialized?
 592         if(g_os_version_initialized)
 593         {
 594                 return g_os_version_info;
 595         }
 596
 597         readLock.unlock();
 598         QWriteLocker writeLock(&g_os_version_lock);
 599
 600         //Initialized now?
 601         if(g_os_version_initialized)
 602         {
 603                 return g_os_version_info;
 604         }
 605
 606         //Detect OS version
 607         unsigned int major, minor, build, spack; bool overrideFlg;
 608         if(get_real_os_version(&major, &minor, &build, &spack, &overrideFlg))
 609         {
 610                 g_os_version_info.type = Version::OS_WINDOWS;
 611                 g_os_version_info.versionMajor = major;
 612                 g_os_version_info.versionMinor = minor;
 613                 g_os_version_info.versionBuild = build;
 614                 g_os_version_info.versionSPack = spack;
 615                 g_os_version_info.overrideFlag = overrideFlg;
 616         }
 617         else
 618         {
 619                 qWarning("Failed to determine the operating system version!");
 620         }
 621
 622         //Completed
 623         g_os_version_initialized = true;
 624         return g_os_version_info;
 625 }
 626
 627 const char *MUtils::OS::os_friendly_name(const MUtils::OS::Version::os_version_t &os_version)
 628 {
 629         for(size_t i = 0; g_os_version_lut[i].version != MUtils::OS::Version::UNKNOWN_OPSYS; i++)
 630         {
 631                 if(os_version == g_os_version_lut[i].version)
 632                 {
 633                         return g_os_version_lut[i].friendlyName;
 634                 }
 635         }
 636
 637         return NULL;
 638 }
 639
 640 ///////////////////////////////////////////////////////////////////////////////
 641 // WINE DETECTION
 642 ///////////////////////////////////////////////////////////////////////////////
 643
 644 static bool g_wine_deteced = false;
 645 static bool g_wine_initialized = false;
 646 static QReadWriteLock g_wine_lock;
 647
 648 static const bool detect_wine(void)
 649 {
 650         void *const ptr = MUtils::Win32Utils::resolve<void*>(QLatin1String("ntdll"), QLatin1String("wine_get_version"));
 651         return (ptr != NULL);
 652 }
 653
 654 const bool &MUtils::OS::running_on_wine(void)
 655 {
 656         QReadLocker readLock(&g_wine_lock);
 657
 658         //Already initialized?
 659         if(g_wine_initialized)
 660         {
 661                 return g_wine_deteced;
 662         }
 663
 664         readLock.unlock();
 665         QWriteLocker writeLock(&g_wine_lock);
 666
 667         //Initialized now?
 668         if(g_wine_initialized)
 669         {
 670                 return g_wine_deteced;
 671         }
 672
 673         //Try to detect Wine
 674         g_wine_deteced = detect_wine();
 675         g_wine_initialized = true;
 676
 677         return g_wine_deteced;
 678 }
 679
 680 ///////////////////////////////////////////////////////////////////////////////
 681 // KNWON FOLDERS
 682 ///////////////////////////////////////////////////////////////////////////////
 683
 684 typedef QMap<size_t, QString> KFMap;
 685 typedef HRESULT (WINAPI *SHGetKnownFolderPath_t)(const GUID &rfid, DWORD dwFlags, HANDLE hToken, PWSTR *ppszPath);
 686 typedef HRESULT (WINAPI *SHGetFolderPath_t)     (HWND hwndOwner, int nFolder, HANDLE hToken, DWORD dwFlags, LPWSTR pszPath);
 687
 688 static QScopedPointer<KFMap>  g_known_folders_map;
 689 static QReadWriteLock         g_known_folders_lock;
 690
 691 const QString &MUtils::OS::known_folder(known_folder_t folder_id)
 692 {
 693         typedef enum { KF_FLAG_CREATE = 0x00008000 } kf_flags_t;
 694
 695         struct
 696         {
 697                 const int csidl;
 698                 const GUID guid;
 699         }
 700         static s_folders[] =
 701         {
 702                 { 0x001c, {0xF1B32785,0x6FBA,0x4FCF,{0x9D,0x55,0x7B,0x8E,0x7F,0x15,0x70,0x91}} },  //CSIDL_LOCAL_APPDATA
 703                 { 0x0026, {0x905e63b6,0xc1bf,0x494e,{0xb2,0x9c,0x65,0xb7,0x32,0xd3,0xd2,0x1a}} },  //CSIDL_PROGRAM_FILES
 704                 { 0x0024, {0xF38BF404,0x1D43,0x42F2,{0x93,0x05,0x67,0xDE,0x0B,0x28,0xFC,0x23}} },  //CSIDL_WINDOWS_FOLDER
 705                 { 0x0025, {0x1AC14E77,0x02E7,0x4E5D,{0xB7,0x44,0x2E,0xB1,0xAE,0x51,0x98,0xB7}} },  //CSIDL_SYSTEM_FOLDER
 706         };
 707
 708         size_t folderId = size_t(-1);
 709
 710         switch(folder_id)
 711         {
 712                 case FOLDER_LOCALAPPDATA: folderId = 0; break;
 713                 case FOLDER_PROGRAMFILES: folderId = 1; break;
 714                 case FOLDER_SYSTROOT_DIR: folderId = 2; break;
 715                 case FOLDER_SYSTEMFOLDER: folderId = 3; break;
 716         }
 717
 718         if(folderId == size_t(-1))
 719         {
 720                 qWarning("Invalid 'known' folder was requested!");
 721                 return *reinterpret_cast<QString*>(NULL);
 722         }
 723
 724         QReadLocker readLock(&g_known_folders_lock);
 725
 726         //Already in cache?
 727         if(!g_known_folders_map.isNull())
 728         {
 729                 if(g_known_folders_map->contains(folderId))
 730                 {
 731                         return g_known_folders_map->operator[](folderId);
 732                 }
 733         }
 734
 735         //Obtain write lock to initialize
 736         readLock.unlock();
 737         QWriteLocker writeLock(&g_known_folders_lock);
 738
 739         //Still not in cache?
 740         if(!g_known_folders_map.isNull())
 741         {
 742                 if(g_known_folders_map->contains(folderId))
 743                 {
 744                         return g_known_folders_map->operator[](folderId);
 745                 }
 746         }
 747
 748         //Initialize on first call
 749         if(g_known_folders_map.isNull())
 750         {
 751                 g_known_folders_map.reset(new QMap<size_t, QString>());
 752         }
 753
 754         QString folderPath;
 755
 756         //Now try to get the folder path!
 757         if(const SHGetKnownFolderPath_t known_folders_fpGetKnownFolderPath = MUtils::Win32Utils::resolve<SHGetKnownFolderPath_t>(QLatin1String("shell32"), QLatin1String("SHGetKnownFolderPath")))
 758         {
 759                 WCHAR *path = NULL;
 760                 if(known_folders_fpGetKnownFolderPath(s_folders[folderId].guid, KF_FLAG_CREATE, NULL, &path) == S_OK)
 761                 {
 762                         //MessageBoxW(0, path, L"SHGetKnownFolderPath", MB_TOPMOST);
 763                         QDir folderTemp = QDir(QDir::fromNativeSeparators(MUTILS_QSTR(path)));
 764                         if(folderTemp.exists())
 765                         {
 766                                 folderPath = folderTemp.canonicalPath();
 767                         }
 768                         CoTaskMemFree(path);
 769                 }
 770         }
 771         else if(const SHGetFolderPath_t known_folders_fpGetFolderPath = MUtils::Win32Utils::resolve<SHGetFolderPath_t>(QLatin1String("shell32"), QLatin1String("SHGetFolderPathW")))
 772         {
 773                 QScopedArrayPointer<WCHAR> path(new WCHAR[4096]);
 774                 if(known_folders_fpGetFolderPath(NULL, s_folders[folderId].csidl | CSIDL_FLAG_CREATE, NULL, NULL, path.data()) == S_OK)
 775                 {
 776                         //MessageBoxW(0, path, L"SHGetFolderPathW", MB_TOPMOST);
 777                         QDir folderTemp = QDir(QDir::fromNativeSeparators(MUTILS_QSTR(path.data())));
 778                         if(folderTemp.exists())
 779                         {
 780                                 folderPath = folderTemp.canonicalPath();
 781                         }
 782                 }
 783         }
 784
 785         //Update cache
 786         g_known_folders_map->insert(folderId, folderPath);
 787         return g_known_folders_map->operator[](folderId);
 788 }
 789
 790 ///////////////////////////////////////////////////////////////////////////////
 791 // CURRENT DATA & TIME
 792 ///////////////////////////////////////////////////////////////////////////////
 793
 794 QDate MUtils::OS::current_date(void)
 795 {
 796         const DWORD MAX_PROC = 1024;
 797         QScopedArrayPointer<DWORD> processes(new DWORD[MAX_PROC]);
 798         DWORD bytesReturned = 0;
 799
 800         if(!EnumProcesses(processes.data(), sizeof(DWORD) * MAX_PROC, &bytesReturned))
 801         {
 802                 return QDate::currentDate();
 803         }
 804
 805         const DWORD procCount = bytesReturned / sizeof(DWORD);
 806         ULARGE_INTEGER lastStartTime;
 807         memset(&lastStartTime, 0, sizeof(ULARGE_INTEGER));
 808
 809         for(DWORD i = 0; i < procCount; i++)
 810         {
 811                 if(HANDLE hProc = OpenProcess(PROCESS_QUERY_INFORMATION, FALSE, processes[i]))
 812                 {
 813                         FILETIME processTime[4];
 814                         if(GetProcessTimes(hProc, &processTime[0], &processTime[1], &processTime[2], &processTime[3]))
 815                         {
 816                                 ULARGE_INTEGER timeCreation;
 817                                 timeCreation.LowPart  = processTime[0].dwLowDateTime;
 818                                 timeCreation.HighPart = processTime[0].dwHighDateTime;
 819                                 if(timeCreation.QuadPart > lastStartTime.QuadPart)
 820                                 {
 821                                         lastStartTime.QuadPart = timeCreation.QuadPart;
 822                                 }
 823                         }
 824                         CloseHandle(hProc);
 825                 }
 826         }
 827
 828         FILETIME lastStartTime_fileTime;
 829         lastStartTime_fileTime.dwHighDateTime = lastStartTime.HighPart;
 830         lastStartTime_fileTime.dwLowDateTime  = lastStartTime.LowPart;
 831
 832         FILETIME lastStartTime_localTime;
 833         if(!FileTimeToLocalFileTime(&lastStartTime_fileTime, &lastStartTime_localTime))
 834         {
 835                 memcpy(&lastStartTime_localTime, &lastStartTime_fileTime, sizeof(FILETIME));
 836         }
 837
 838         SYSTEMTIME lastStartTime_system;
 839         if(!FileTimeToSystemTime(&lastStartTime_localTime, &lastStartTime_system))
 840         {
 841                 memset(&lastStartTime_system, 0, sizeof(SYSTEMTIME));
 842                 lastStartTime_system.wYear = 1970; lastStartTime_system.wMonth = lastStartTime_system.wDay = 1;
 843         }
 844
 845         const QDate currentDate = QDate::currentDate();
 846         const QDate processDate = QDate(lastStartTime_system.wYear, lastStartTime_system.wMonth, lastStartTime_system.wDay);
 847         return (currentDate >= processDate) ? currentDate : processDate;
 848 }
 849
 850 quint64 MUtils::OS::current_file_time(void)
 851 {
 852         FILETIME fileTime;
 853         GetSystemTimeAsFileTime(&fileTime);
 854
 855         ULARGE_INTEGER temp;
 856         temp.HighPart = fileTime.dwHighDateTime;
 857         temp.LowPart = fileTime.dwLowDateTime;
 858
 859         return temp.QuadPart;
 860 }
 861
 862 ///////////////////////////////////////////////////////////////////////////////
 863 // FILE PATH FROM FD
 864 ///////////////////////////////////////////////////////////////////////////////
 865
 866 typedef DWORD(_stdcall *GetPathNameByHandleFun)(HANDLE hFile, LPWSTR lpszFilePath, DWORD cchFilePath, DWORD dwFlags);
 867
 868 static QString get_file_path_drive_list(void)
 869 {
 870         QString list;
 871         const DWORD len = GetLogicalDriveStringsW(0, NULL);
 872         if (len > 0)
 873         {
 874                 if (wchar_t *const buffer = (wchar_t*) _malloca(sizeof(wchar_t) * len))
 875                 {
 876                         const DWORD ret = GetLogicalDriveStringsW(len, buffer);
 877                         if ((ret > 0) && (ret < len))
 878                         {
 879                                 const wchar_t *ptr = buffer;
 880                                 while (const size_t current_len = wcslen(ptr))
 881                                 {
 882                                         list.append(QChar(*reinterpret_cast<const ushort*>(ptr)));
 883                                         ptr += (current_len + 1);
 884                                 }
 885                         }
 886                         _freea(buffer);
 887                 }
 888         }
 889         return list;
 890 }
 891
 892 static void get_file_path_translate(QString &path)
 893 {
 894         static const DWORD BUFSIZE = 2048;
 895         wchar_t buffer[BUFSIZE], drive[3];
 896
 897         const QString driveList = get_file_path_drive_list();
 898         wcscpy_s(drive, 3, L"?:");
 899         for (const wchar_t *current = MUTILS_WCHR(driveList); *current; current++)
 900         {
 901                 drive[0] = (*current);
 902                 if (QueryDosDeviceW(drive, buffer, MAX_PATH))
 903                 {
 904                         const QString prefix = MUTILS_QSTR(buffer);
 905                         if (path.startsWith(prefix, Qt::CaseInsensitive))
 906                         {
 907                                 path.remove(0, prefix.length()).prepend(QLatin1Char(':')).prepend(QChar(*reinterpret_cast<const ushort*>(current)));
 908                                 break;
 909                         }
 910                 }
 911         }
 912 }
 913
 914 static QString get_file_path_fallback(const HANDLE &hFile)
 915 {
 916         QString filePath;
 917
 918         const HANDLE hFileMap = CreateFileMappingW(hFile, NULL, PAGE_READONLY, 0, 1, NULL);
 919         if (hFileMap)
 920         {
 921                 void *const pMem = MapViewOfFile(hFileMap, FILE_MAP_READ, 0, 0, 1);
 922                 if (pMem)
 923                 {
 924                         static const size_t BUFFSIZE = 2048;
 925                         wchar_t buffer[BUFFSIZE];
 926                         if (GetMappedFileNameW(GetCurrentProcess(), pMem, buffer, BUFFSIZE) > 0)
 927                         {
 928                                 filePath = MUTILS_QSTR(buffer);
 929                         }
 930                         UnmapViewOfFile(pMem);
 931                 }
 932                 CloseHandle(hFileMap);
 933         }
 934
 935         if (!filePath.isEmpty())
 936         {
 937                 get_file_path_translate(filePath);
 938         }
 939
 940         return filePath;
 941 }
 942
 943 QString MUtils::OS::get_file_path(const int &fd)
 944 {
 945         if (fd >= 0)
 946         {
 947                 const GetPathNameByHandleFun getPathNameByHandleFun = MUtils::Win32Utils::resolve<GetPathNameByHandleFun>(QLatin1String("kernel32"), QLatin1String("GetFinalPathNameByHandleW"));
 948                 if (!getPathNameByHandleFun)
 949                 {
 950                         return get_file_path_fallback((HANDLE)_get_osfhandle(fd));
 951                 }
 952
 953                 const HANDLE handle = (HANDLE) _get_osfhandle(fd);
 954                 const DWORD len = getPathNameByHandleFun(handle, NULL, 0, FILE_NAME_OPENED);
 955                 if (len > 0)
 956                 {
 957                         if (wchar_t *const buffer = (wchar_t*)_malloca(sizeof(wchar_t) * len))
 958                         {
 959                                 const DWORD ret = getPathNameByHandleFun(handle, buffer, len, FILE_NAME_OPENED);
 960                                 if ((ret > 0) && (ret < len))
 961                                 {
 962                                         const QString path(MUTILS_QSTR(buffer));
 963                                         return path.startsWith(QLatin1String("\\\\?\\")) ? path.mid(4) : path;
 964                                 }
 965                                 _freea(buffer);
 966                         }
 967                 }
 968         }
 969
 970         return QString();
 971 }
 972
 973 ///////////////////////////////////////////////////////////////////////////////
 974 // PROCESS ELEVATION
 975 ///////////////////////////////////////////////////////////////////////////////
 976
 977 static bool user_is_admin_helper(void)
 978 {
 979         HANDLE hToken = NULL;
 980         if(!OpenProcessToken(GetCurrentProcess(), TOKEN_QUERY, &hToken))
 981         {
 982                 return false;
 983         }
 984
 985         DWORD dwSize = 0;
 986         if(!GetTokenInformation(hToken, TokenGroups, NULL, 0, &dwSize))
 987         {
 988                 if(GetLastError() != ERROR_INSUFFICIENT_BUFFER)
 989                 {
 990                         CloseHandle(hToken);
 991                         return false;
 992                 }
 993         }
 994
 995         PTOKEN_GROUPS lpGroups = (PTOKEN_GROUPS) malloc(dwSize);
 996         if(!lpGroups)
 997         {
 998                 CloseHandle(hToken);
 999                 return false;
1000         }
1001
1002         if(!GetTokenInformation(hToken, TokenGroups, lpGroups, dwSize, &dwSize))
1003         {
1004                 free(lpGroups);
1005                 CloseHandle(hToken);
1006                 return false;
1007         }
1008
1009         PSID lpSid = NULL; SID_IDENTIFIER_AUTHORITY Authority = {SECURITY_NT_AUTHORITY};
1010         if(!AllocateAndInitializeSid(&Authority, 2, SECURITY_BUILTIN_DOMAIN_RID, DOMAIN_ALIAS_RID_ADMINS, 0, 0, 0, 0, 0, 0, &lpSid))
1011         {
1012                 free(lpGroups);
1013                 CloseHandle(hToken);
1014                 return false;
1015         }
1016
1017         bool bResult = false;
1018         for(DWORD i = 0; i < lpGroups->GroupCount; i++)
1019         {
1020                 if(EqualSid(lpSid, lpGroups->Groups[i].Sid))
1021                 {
1022                         bResult = true;
1023                         break;
1024                 }
1025         }
1026
1027         FreeSid(lpSid);
1028         free(lpGroups);
1029         CloseHandle(hToken);
1030         return bResult;
1031 }
1032
1033 bool MUtils::OS::is_elevated(bool *bIsUacEnabled)
1034 {
1035         if(bIsUacEnabled)
1036         {
1037                 *bIsUacEnabled = false;
1038         }
1039
1040         bool bIsProcessElevated = false;
1041         HANDLE hToken = NULL;
1042
1043         if(OpenProcessToken(GetCurrentProcess(), TOKEN_QUERY, &hToken))
1044         {
1045                 TOKEN_ELEVATION_TYPE tokenElevationType;
1046                 DWORD returnLength;
1047                 if(GetTokenInformation(hToken, TokenElevationType, &tokenElevationType, sizeof(TOKEN_ELEVATION_TYPE), &returnLength))
1048                 {
1049                         if(returnLength == sizeof(TOKEN_ELEVATION_TYPE))
1050                         {
1051                                 switch(tokenElevationType)
1052                                 {
1053                                 case TokenElevationTypeDefault:
1054                                         qDebug("Process token elevation type: Default -> UAC is disabled.\n");
1055                                         break;
1056                                 case TokenElevationTypeFull:
1057                                         qWarning("Process token elevation type: Full -> potential security risk!\n");
1058                                         bIsProcessElevated = true;
1059                                         if(bIsUacEnabled) *bIsUacEnabled = true;
1060                                         break;
1061                                 case TokenElevationTypeLimited:
1062                                         qDebug("Process token elevation type: Limited -> not elevated.\n");
1063                                         if(bIsUacEnabled) *bIsUacEnabled = true;
1064                                         break;
1065                                 default:
1066                                         qWarning("Unknown tokenElevationType value: %d", tokenElevationType);
1067                                         break;
1068                                 }
1069                         }
1070                         else
1071                         {
1072                                 qWarning("GetTokenInformation() return an unexpected size!");
1073                         }
1074                 }
1075                 CloseHandle(hToken);
1076         }
1077         else
1078         {
1079                 qWarning("Failed to open process token!");
1080         }
1081
1082         return bIsProcessElevated;
1083 }
1084
1085 bool MUtils::OS::user_is_admin(void)
1086 {
1087         bool isAdmin = false;
1088
1089         //Check for process elevation and UAC support first!
1090         if(MUtils::OS::is_elevated(&isAdmin))
1091         {
1092                 qWarning("Process is elevated -> user is admin!");
1093                 return true;
1094         }
1095
1096         //If not elevated and UAC is not available -> user must be in admin group!
1097         if(!isAdmin)
1098         {
1099                 qDebug("UAC is disabled/unavailable -> checking for Administrators group");
1100                 isAdmin = user_is_admin_helper();
1101         }
1102
1103         return isAdmin;
1104 }
1105
1106 ///////////////////////////////////////////////////////////////////////////////
1107 // NETWORK STATE
1108 ///////////////////////////////////////////////////////////////////////////////
1109
1110 int MUtils::OS::network_status(void)
1111 {
1112         DWORD dwFlags;
1113         const BOOL ret = IsNetworkAlive(&dwFlags);
1114         if(GetLastError() == 0)
1115         {
1116                 return (ret != FALSE) ? NETWORK_TYPE_YES : NETWORK_TYPE_NON;
1117         }
1118         return NETWORK_TYPE_ERR;
1119 }
1120
1121 ///////////////////////////////////////////////////////////////////////////////
1122 // MESSAGE HANDLER
1123 ///////////////////////////////////////////////////////////////////////////////
1124
1125 bool MUtils::OS::handle_os_message(const void *const message, long *result)
1126 {
1127         const MSG *const msg = reinterpret_cast<const MSG*>(message);
1128
1129         switch(msg->message)
1130         {
1131         case WM_QUERYENDSESSION:
1132                 qWarning("WM_QUERYENDSESSION message received!");
1133                 *result = MUtils::GUI::broadcast(MUtils::GUI::USER_EVENT_QUERYENDSESSION, false) ? TRUE : FALSE;
1134                 return true;
1135         case WM_ENDSESSION:
1136                 qWarning("WM_ENDSESSION message received!");
1137                 if(msg->wParam == TRUE)
1138                 {
1139                         MUtils::GUI::broadcast(MUtils::GUI::USER_EVENT_ENDSESSION, false);
1140                         MUtils::GUI::force_quit();
1141                         exit(1);
1142                 }
1143                 *result = 0;
1144                 return true;
1145         default:
1146                 /*ignore this message and let Qt handle it*/
1147                 return false;
1148         }
1149 }
1150
1151 ///////////////////////////////////////////////////////////////////////////////
1152 // SLEEP
1153 ///////////////////////////////////////////////////////////////////////////////
1154
1155 void MUtils::OS::sleep_ms(const size_t &duration)
1156 {
1157         Sleep((DWORD) duration);
1158 }
1159
1160 ///////////////////////////////////////////////////////////////////////////////
1161 // EXECUTABLE CHECK
1162 ///////////////////////////////////////////////////////////////////////////////
1163
1164 static int g_library_as_image_resource_supported = -1;
1165 static QReadWriteLock g_library_as_image_resource_supported_lock;
1166
1167 static bool library_as_image_resource_supported()
1168 {
1169         QReadLocker readLocker(&g_library_as_image_resource_supported_lock);
1170         if (g_library_as_image_resource_supported >= 0)
1171         {
1172                 return (g_library_as_image_resource_supported > 0);
1173         }
1174
1175         readLocker.unlock();
1176         QWriteLocker writeLocker(&g_library_as_image_resource_supported_lock);
1177
1178         if (g_library_as_image_resource_supported < 0)
1179         {
1180                 g_library_as_image_resource_supported = 0;
1181                 OSVERSIONINFOEXW osvi;
1182                 if (rtl_get_version(&osvi))
1183                 {
1184                         if ((osvi.dwPlatformId == VER_PLATFORM_WIN32_NT) && (osvi.dwMajorVersion >= 6U))
1185                         {
1186                                 g_library_as_image_resource_supported = 1;
1187                         }
1188                 }
1189         }
1190
1191         return (g_library_as_image_resource_supported > 0);
1192 }
1193
1194 bool MUtils::OS::is_executable_file(const QString &path)
1195 {
1196         DWORD binaryType;
1197         if(GetBinaryType(MUTILS_WCHR(QDir::toNativeSeparators(path)), &binaryType))
1198         {
1199                 return ((binaryType == SCS_32BIT_BINARY) || (binaryType == SCS_64BIT_BINARY));
1200         }
1201
1202         const DWORD errorCode = GetLastError();
1203         qWarning("GetBinaryType() failed with error: 0x%08X", errorCode);
1204         return false;
1205 }
1206
1207 bool MUtils::OS::is_library_file(const QString &path)
1208 {
1209         const DWORD flags = library_as_image_resource_supported() ? (LOAD_LIBRARY_AS_DATAFILE | LOAD_LIBRARY_AS_IMAGE_RESOURCE) : (LOAD_LIBRARY_AS_DATAFILE | DONT_RESOLVE_DLL_REFERENCES);
1210         if (const HMODULE hMod = LoadLibraryEx(MUTILS_WCHR(QDir::toNativeSeparators(path)), NULL, flags))
1211         {
1212                 FreeLibrary(hMod);
1213                 return true;
1214         }
1215
1216         const DWORD errorCode = GetLastError();
1217         qWarning("LoadLibraryEx() failed with error: 0x%08X", errorCode);
1218         return false;
1219 }
1220
1221 ///////////////////////////////////////////////////////////////////////////////
1222 // HIBERNATION / SHUTDOWN
1223 ///////////////////////////////////////////////////////////////////////////////
1224
1225 bool MUtils::OS::is_hibernation_supported(void)
1226 {
1227         bool hibernationSupported = false;
1228
1229         SYSTEM_POWER_CAPABILITIES pwrCaps;
1230         SecureZeroMemory(&pwrCaps, sizeof(SYSTEM_POWER_CAPABILITIES));
1231
1232         if(GetPwrCapabilities(&pwrCaps))
1233         {
1234                 hibernationSupported = pwrCaps.SystemS4 && pwrCaps.HiberFilePresent;
1235         }
1236
1237         return hibernationSupported;
1238 }
1239
1240 bool MUtils::OS::shutdown_computer(const QString &message, const unsigned long timeout, const bool forceShutdown, const bool hibernate)
1241 {
1242         HANDLE hToken = NULL;
1243
1244         if(OpenProcessToken(GetCurrentProcess(), TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken))
1245         {
1246                 TOKEN_PRIVILEGES privileges;
1247                 memset(&privileges, 0, sizeof(TOKEN_PRIVILEGES));
1248                 privileges.PrivilegeCount = 1;
1249                 privileges.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
1250
1251                 if(LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME, &privileges.Privileges[0].Luid))
1252                 {
1253                         if(AdjustTokenPrivileges(hToken, FALSE, &privileges, NULL, NULL, NULL))
1254                         {
1255                                 if(hibernate)
1256                                 {
1257                                         if(SetSuspendState(TRUE, TRUE, TRUE))
1258                                         {
1259                                                 return true;
1260                                         }
1261                                 }
1262                                 const DWORD reason = SHTDN_REASON_MAJOR_APPLICATION | SHTDN_REASON_FLAG_PLANNED;
1263                                 return InitiateSystemShutdownEx(NULL, const_cast<wchar_t*>(MUTILS_WCHR(message)), timeout, forceShutdown ? TRUE : FALSE, FALSE, reason);
1264                         }
1265                 }
1266         }
1267
1268         return false;
1269 }
1270
1271 ///////////////////////////////////////////////////////////////////////////////
1272 // FREE DISKSPACE
1273 ///////////////////////////////////////////////////////////////////////////////
1274
1275 bool MUtils::OS::free_diskspace(const QString &path, quint64 &freeSpace)
1276 {
1277         ULARGE_INTEGER freeBytesAvailable, totalNumberOfBytes, totalNumberOfFreeBytes;
1278         if(GetDiskFreeSpaceExW(reinterpret_cast<const wchar_t*>(QDir::toNativeSeparators(path).utf16()), &freeBytesAvailable, &totalNumberOfBytes, &totalNumberOfFreeBytes))
1279         {
1280                 freeSpace = freeBytesAvailable.QuadPart;
1281                 return true;;
1282         }
1283
1284         freeSpace = -1;
1285         return false;
1286 }
1287
1288 ///////////////////////////////////////////////////////////////////////////////
1289 // DRIVE TYPE
1290 ///////////////////////////////////////////////////////////////////////////////
1291
1292 static wchar_t get_drive_letter(const QString &path)
1293 {
1294         QString nativePath = QDir::toNativeSeparators(path);
1295         while (nativePath.startsWith("\\\\?\\") || nativePath.startsWith("\\\\.\\"))
1296         {
1297                 nativePath = QDir::toNativeSeparators(nativePath.mid(4));
1298         }
1299         if ((path.length() > 1) && (path[1] == QLatin1Char(':')))
1300         {
1301                 const wchar_t letter = static_cast<wchar_t>(path[0].unicode());
1302                 if (((letter >= 'A') && (letter <= 'Z')) || ((letter >= 'a') && (letter <= 'z')))
1303                 {
1304                         return towupper(letter);
1305                 }
1306         }
1307         return L'\0'; /*invalid path spec*/
1308 }
1309
1310 static QSet<DWORD> get_physical_drive_ids(const wchar_t drive_letter)
1311 {
1312         QSet<DWORD> physical_drives;
1313         wchar_t driveName[8];
1314         _snwprintf_s(driveName, 8, _TRUNCATE, L"\\\\.\\%c:", drive_letter);
1315         const HANDLE hDrive = CreateFileW(driveName, 0, FILE_SHARE_READ | FILE_SHARE_WRITE, NULL, OPEN_EXISTING, 0, NULL);
1316         if (hDrive && (hDrive != INVALID_HANDLE_VALUE))
1317         {
1318                 const size_t BUFF_SIZE = sizeof(VOLUME_DISK_EXTENTS) + (32U * sizeof(DISK_EXTENT));
1319                 VOLUME_DISK_EXTENTS *const diskExtents = (VOLUME_DISK_EXTENTS*)_malloca(BUFF_SIZE);
1320                 DWORD dwSize;
1321                 if (DeviceIoControl(hDrive, IOCTL_VOLUME_GET_VOLUME_DISK_EXTENTS, NULL, 0, (LPVOID)diskExtents, (DWORD)BUFF_SIZE, (LPDWORD)&dwSize, NULL))
1322                 {
1323                         for (DWORD index = 0U; index < diskExtents->NumberOfDiskExtents; ++index)
1324                         {
1325                                 physical_drives.insert(diskExtents->Extents[index].DiskNumber);
1326                         }
1327                 }
1328                 _freea(diskExtents);
1329                 CloseHandle(hDrive);
1330         }
1331         return physical_drives;
1332 }
1333
1334 static bool incurs_seek_penalty(const DWORD device_id)
1335 {
1336         wchar_t driveName[24];
1337         _snwprintf_s(driveName, 24, _TRUNCATE, L"\\\\?\\PhysicalDrive%u", device_id);
1338         const HANDLE hDevice = CreateFileW(driveName, 0, FILE_SHARE_READ | FILE_SHARE_WRITE, NULL, OPEN_EXISTING, 0, NULL);
1339         bool seeking_penalty = true;
1340         if (hDevice && (hDevice != INVALID_HANDLE_VALUE))
1341         {
1342                 STORAGE_PROPERTY_QUERY spq;
1343                 DEVICE_SEEK_PENALTY_DESCRIPTOR dspd;
1344                 memset(&spq, 0, sizeof(STORAGE_PROPERTY_QUERY));
1345                 spq.PropertyId = (STORAGE_PROPERTY_ID)StorageDeviceSeekPenaltyProperty;
1346                 spq.QueryType = PropertyStandardQuery;
1347                 DWORD dwSize;
1348                 if (DeviceIoControl(hDevice, IOCTL_STORAGE_QUERY_PROPERTY, (LPVOID)&spq, (DWORD)sizeof(spq), (LPVOID)&dspd, (DWORD)sizeof(dspd), (LPDWORD)&dwSize, NULL))
1349                 {
1350                         seeking_penalty = dspd.IncursSeekPenalty;
1351                 }
1352                 CloseHandle(hDevice);
1353         }
1354         return seeking_penalty;
1355 }
1356
1357 static bool is_fast_seeking_drive(const wchar_t drive_letter)
1358 {
1359         bool fast_seeking = false;
1360         const QSet<DWORD> physical_drive_ids = get_physical_drive_ids(drive_letter);
1361         if (!physical_drive_ids.empty())
1362         {
1363                 fast_seeking = true;
1364                 for (QSet<DWORD>::const_iterator iter = physical_drive_ids.constBegin(); iter != physical_drive_ids.constEnd(); ++iter)
1365                 {
1366                         fast_seeking = fast_seeking && (!incurs_seek_penalty(*iter));
1367                 }
1368         }
1369         return fast_seeking;
1370 }
1371
1372 MUtils::OS::drive_type_t MUtils::OS::get_drive_type(const QString &path, bool *fast_seeking)
1373 {
1374         drive_type_t driveType = DRIVE_TYPE_ERR;
1375         const wchar_t driveLetter = get_drive_letter(path);
1376         if (driveLetter)
1377         {
1378                 wchar_t driveName[8];
1379                 _snwprintf_s(driveName, 8, _TRUNCATE, L"\\\\.\\%c:\\", driveLetter);
1380                 switch (GetDriveTypeW(driveName))
1381                 {
1382                         case DRIVE_REMOVABLE: driveType = DRIVE_TYPE_FDD; break;
1383                         case DRIVE_FIXED:     driveType = DRIVE_TYPE_HDD; break;
1384                         case DRIVE_REMOTE:    driveType = DRIVE_TYPE_NET; break;
1385                         case DRIVE_CDROM:     driveType = DRIVE_TYPE_OPT; break;
1386                         case DRIVE_RAMDISK:   driveType = DRIVE_TYPE_RAM; break;
1387                 }
1388         }
1389         if (fast_seeking)
1390         {
1391                 if (driveType == DRIVE_TYPE_HDD)
1392                 {
1393                         *fast_seeking = is_fast_seeking_drive(driveLetter);
1394                 }
1395                 else
1396                 {
1397                         *fast_seeking = (driveType == DRIVE_TYPE_RAM);
1398                 }
1399         }
1400         return driveType;
1401 }
1402
1403 ///////////////////////////////////////////////////////////////////////////////
1404 // SHELL OPEN
1405 ///////////////////////////////////////////////////////////////////////////////
1406
1407 bool MUtils::OS::shell_open(const QWidget *parent, const QString &url, const QString &parameters, const QString &directory, const bool explore)
1408 {
1409         return ((int) ShellExecuteW((parent ? reinterpret_cast<HWND>(parent->winId()) : NULL), (explore ? L"explore" : L"open"), MUTILS_WCHR(url), ((!parameters.isEmpty()) ? MUTILS_WCHR(parameters) : NULL), ((!directory.isEmpty()) ? MUTILS_WCHR(directory) : NULL), SW_SHOW)) > 32;
1410 }
1411
1412 bool MUtils::OS::shell_open(const QWidget *parent, const QString &url, const bool explore)
1413 {
1414         return shell_open(parent, url, QString(), QString(), explore);
1415 }
1416
1417 ///////////////////////////////////////////////////////////////////////////////
1418 // OPEN MEDIA FILE
1419 ///////////////////////////////////////////////////////////////////////////////
1420
1421 bool MUtils::OS::open_media_file(const QString &mediaFilePath)
1422 {
1423         const static wchar_t *registryPrefix[2] = { L"SOFTWARE\\", L"SOFTWARE\\Wow6432Node\\" };
1424         const static wchar_t *registryKeys[3] =
1425         {
1426                 L"Microsoft\\Windows\\CurrentVersion\\Uninstall\\{97D341C8-B0D1-4E4A-A49A-C30B52F168E9}",
1427                 L"Microsoft\\Windows\\CurrentVersion\\Uninstall\\{DB9E4EAB-2717-499F-8D56-4CC8A644AB60}",
1428                 L"foobar2000"
1429         };
1430         const static wchar_t *appNames[4] = { L"smplayer_portable.exe", L"smplayer.exe", L"MPUI.exe", L"foobar2000.exe" };
1431         const static wchar_t *valueNames[2] = { L"InstallLocation", L"InstallDir" };
1432
1433         for(size_t i = 0; i < 3; i++)
1434         {
1435                 for(size_t j = 0; j < 2; j++)
1436                 {
1437                         QString mplayerPath;
1438                         HKEY registryKeyHandle = NULL;
1439
1440                         const QString currentKey = MUTILS_QSTR(registryPrefix[j]).append(MUTILS_QSTR(registryKeys[i]));
1441                         if(RegOpenKeyExW(HKEY_LOCAL_MACHINE, MUTILS_WCHR(currentKey), 0, KEY_READ, &registryKeyHandle) == ERROR_SUCCESS)
1442                         {
1443                                 for(size_t k = 0; k < 2; k++)
1444                                 {
1445                                         wchar_t Buffer[4096];
1446                                         DWORD BuffSize = sizeof(wchar_t*) * 4096;
1447                                         DWORD DataType = REG_NONE;
1448                                         if(RegQueryValueExW(registryKeyHandle, valueNames[k], 0, &DataType, reinterpret_cast<BYTE*>(Buffer), &BuffSize) == ERROR_SUCCESS)
1449                                         {
1450                                                 if((DataType == REG_SZ) || (DataType == REG_EXPAND_SZ) || (DataType == REG_LINK))
1451                                                 {
1452                                                         mplayerPath = MUTILS_QSTR(Buffer);
1453                                                         break;
1454                                                 }
1455                                         }
1456                                 }
1457                                 RegCloseKey(registryKeyHandle);
1458                         }
1459
1460                         if(!mplayerPath.isEmpty())
1461                         {
1462                                 QDir mplayerDir(mplayerPath);
1463                                 if(mplayerDir.exists())
1464                                 {
1465                                         for(size_t k = 0; k < 4; k++)
1466                                         {
1467                                                 if(mplayerDir.exists(MUTILS_QSTR(appNames[k])))
1468                                                 {
1469                                                         qDebug("Player found at:\n%s\n", MUTILS_UTF8(mplayerDir.absoluteFilePath(MUTILS_QSTR(appNames[k]))));
1470                                                         QProcess::startDetached(mplayerDir.absoluteFilePath(MUTILS_QSTR(appNames[k])), QStringList() << QDir::toNativeSeparators(mediaFilePath));
1471                                                         return true;
1472                                                 }
1473                                         }
1474                                 }
1475                         }
1476                 }
1477         }
1478         return false;
1479 }
1480
1481 ///////////////////////////////////////////////////////////////////////////////
1482 // DEBUGGER CHECK
1483 ///////////////////////////////////////////////////////////////////////////////
1484
1485 static bool change_process_priority_helper(const HANDLE hProcess, const int priority)
1486 {
1487         bool ok = false;
1488
1489         switch(qBound(-2, priority, 2))
1490         {
1491         case 2:
1492                 ok = (SetPriorityClass(hProcess, HIGH_PRIORITY_CLASS) == TRUE);
1493                 break;
1494         case 1:
1495                 if(!(ok = (SetPriorityClass(hProcess, ABOVE_NORMAL_PRIORITY_CLASS) == TRUE)))
1496                 {
1497                         ok = (SetPriorityClass(hProcess, HIGH_PRIORITY_CLASS) == TRUE);
1498                 }
1499                 break;
1500         case 0:
1501                 ok = (SetPriorityClass(hProcess, NORMAL_PRIORITY_CLASS) == TRUE);
1502                 break;
1503         case -1:
1504                 if(!(ok = (SetPriorityClass(hProcess, BELOW_NORMAL_PRIORITY_CLASS) == TRUE)))
1505                 {
1506                         ok = (SetPriorityClass(hProcess, IDLE_PRIORITY_CLASS) == TRUE);
1507                 }
1508                 break;
1509         case -2:
1510                 ok = (SetPriorityClass(hProcess, IDLE_PRIORITY_CLASS) == TRUE);
1511                 break;
1512         }
1513
1514         return ok;
1515 }
1516
1517 bool MUtils::OS::change_process_priority(const int priority)
1518 {
1519         return change_process_priority_helper(GetCurrentProcess(), priority);
1520 }
1521
1522 bool MUtils::OS::change_process_priority(const QProcess *proc, const int priority)
1523 {
1524         if(Q_PID qPid = proc->pid())
1525         {
1526                 return change_process_priority_helper(qPid->hProcess, priority);
1527         }
1528         else
1529         {
1530                 return false;
1531         }
1532 }
1533
1534 ///////////////////////////////////////////////////////////////////////////////
1535 // PROCESS ID
1536 ///////////////////////////////////////////////////////////////////////////////
1537
1538 quint32 MUtils::OS::process_id(void)
1539 {
1540         return GetCurrentProcessId();
1541 }
1542
1543 quint32 MUtils::OS::process_id(const QProcess *const proc)
1544 {
1545         PROCESS_INFORMATION *procInf = proc->pid();
1546         return (procInf) ? procInf->dwProcessId : 0;
1547 }
1548
1549 quint32 MUtils::OS::thread_id(void)
1550 {
1551         return GetCurrentThreadId();
1552 }
1553
1554 quint32 MUtils::OS::thread_id(const QProcess *const proc)
1555 {
1556         PROCESS_INFORMATION *procInf = proc->pid();
1557         return (procInf) ? procInf->dwThreadId : 0;
1558 }
1559
1560 ///////////////////////////////////////////////////////////////////////////////
1561 // PROCESS SUSPEND/RESUME
1562 ///////////////////////////////////////////////////////////////////////////////
1563
1564 bool MUtils::OS::suspend_process(const QProcess *proc, const bool suspend)
1565 {
1566         if(Q_PID pid = proc->pid())
1567         {
1568                 if(suspend)
1569                 {
1570                         return (SuspendThread(pid->hThread) != ((DWORD) -1));
1571                 }
1572                 else
1573                 {
1574                         return (ResumeThread(pid->hThread)  != ((DWORD) -1));
1575                 }
1576         }
1577         else
1578         {
1579                 return false;
1580         }
1581 }
1582
1583 ///////////////////////////////////////////////////////////////////////////////
1584 // SYSTEM TIMER
1585 ///////////////////////////////////////////////////////////////////////////////
1586
1587 bool MUtils::OS::setup_timer_resolution(const quint32 &interval)
1588 {
1589         return timeBeginPeriod(interval) == TIMERR_NOERROR;
1590 }
1591
1592 bool MUtils::OS::reset_timer_resolution(const quint32 &interval)
1593 {
1594         return timeEndPeriod(interval) == TIMERR_NOERROR;
1595 }
1596
1597 ///////////////////////////////////////////////////////////////////////////////
1598 // SET FILE TIME
1599 ///////////////////////////////////////////////////////////////////////////////
1600
1601 static QScopedPointer<QDateTime> s_epoch;
1602 static QReadWriteLock            s_epochLock;
1603
1604 static const QDateTime *get_epoch(void)
1605 {
1606         QReadLocker rdLock(&s_epochLock);
1607
1608         if (s_epoch.isNull())
1609         {
1610                 rdLock.unlock();
1611                 QWriteLocker wrLock(&s_epochLock);
1612                 if (s_epoch.isNull())
1613                 {
1614                         s_epoch.reset(new QDateTime(QDate(1601, 1, 1), QTime(0, 0, 0, 0), Qt::UTC));
1615                 }
1616                 wrLock.unlock();
1617                 rdLock.relock();
1618         }
1619
1620         return s_epoch.data();
1621 }
1622
1623 static FILETIME *qt_time_to_file_time(FILETIME *const fileTime, const QDateTime &dateTime)
1624 {
1625         memset(fileTime, 0, sizeof(FILETIME));
1626
1627         if (const QDateTime *const epoch = get_epoch())
1628         {
1629                 const qint64 msecs = epoch->msecsTo(dateTime);
1630                 if (msecs > 0)
1631                 {
1632                         const quint64 ticks = 10000U * quint64(msecs);
1633                         fileTime->dwHighDateTime = ((ticks >> 32) & 0xFFFFFFFF);
1634                         fileTime->dwLowDateTime = (ticks & 0xFFFFFFFF);
1635                         return fileTime;
1636                 }
1637         }
1638
1639         return NULL;
1640 }
1641
1642 static bool set_file_time(const HANDLE hFile, const QDateTime &created, const QDateTime &lastMod, const QDateTime &lastAcc)
1643 {
1644         FILETIME ftCreated, ftLastMod, ftLastAcc;
1645
1646         FILETIME *const pCreated = created.isValid() ? qt_time_to_file_time(&ftCreated, created) : NULL;
1647         FILETIME *const pLastMod = lastMod.isValid() ? qt_time_to_file_time(&ftLastMod, lastMod) : NULL;
1648         FILETIME *const pLastAcc = lastAcc.isValid() ? qt_time_to_file_time(&ftLastAcc, lastAcc) : NULL;
1649
1650         if (pCreated || pLastMod || pLastAcc)
1651         {
1652                 return (SetFileTime(hFile, pCreated, pLastAcc, pLastMod) != FALSE);
1653         }
1654
1655         return false;
1656 }
1657
1658 bool MUtils::OS::set_file_time(const QFile &file, const QDateTime &created, const QDateTime &lastMod, const QDateTime &lastAcc)
1659 {
1660         const int fd = file.handle();
1661         if (fd >= 0)
1662         {
1663                 return set_file_time((HANDLE)_get_osfhandle(fd), created, lastMod, lastAcc);
1664         }
1665         return false;
1666 }
1667
1668 bool MUtils::OS::set_file_time(const QString &path, const QDateTime &created, const QDateTime &lastMod, const QDateTime &lastAcc)
1669 {
1670         const HANDLE hFile = CreateFileW(MUTILS_WCHR(path), FILE_WRITE_ATTRIBUTES, FILE_SHARE_READ, NULL, OPEN_EXISTING, 0, 0);
1671         bool okay = false;
1672         if ((hFile != NULL) && (hFile != INVALID_HANDLE_VALUE))
1673         {
1674                 okay = set_file_time(hFile, created, lastMod, lastAcc);
1675                 CloseHandle(hFile);
1676         }
1677         return okay;
1678 }
1679
1680 ///////////////////////////////////////////////////////////////////////////////
1681 // CHECK KEY STATE
1682 ///////////////////////////////////////////////////////////////////////////////
1683
1684 bool MUtils::OS::check_key_state_esc(void)
1685 {
1686         return (GetAsyncKeyState(VK_ESCAPE) & 0x0001) != 0;
1687 }
1688
1689 ///////////////////////////////////////////////////////////////////////////////
1690 // SHELL CHANGE NOTIFICATION
1691 ///////////////////////////////////////////////////////////////////////////////
1692
1693 void MUtils::OS::shell_change_notification(void)
1694 {
1695         SHChangeNotify(SHCNE_ASSOCCHANGED, SHCNF_IDLIST, NULL, NULL);
1696 }
1697
1698 ///////////////////////////////////////////////////////////////////////////////
1699 // WOW64 REDIRECTION
1700 ///////////////////////////////////////////////////////////////////////////////
1701
1702 typedef BOOL (_stdcall *Wow64DisableWow64FsRedirectionFun)(void *OldValue);
1703 typedef BOOL (_stdcall *Wow64RevertWow64FsRedirectionFun )(void *OldValue);
1704
1705 bool MUtils::OS::wow64fsredir_disable(void *oldValue)
1706 {
1707         const Wow64DisableWow64FsRedirectionFun wow64redir_disable = MUtils::Win32Utils::resolve<Wow64DisableWow64FsRedirectionFun>(QLatin1String("kernel32"), QLatin1String("Wow64DisableWow64FsRedirection"));
1708         if(wow64redir_disable)
1709         {
1710                 if (wow64redir_disable(oldValue))
1711                 {
1712                         return true;
1713                 }
1714         }
1715         return false;
1716 }
1717
1718 bool MUtils::OS::wow64fsredir_revert(void *oldValue)
1719 {
1720         const Wow64RevertWow64FsRedirectionFun wow64redir_disable = MUtils::Win32Utils::resolve<Wow64RevertWow64FsRedirectionFun>(QLatin1String("kernel32"), QLatin1String("Wow64RevertWow64FsRedirection"));
1721         if (wow64redir_disable)
1722         {
1723                 if (wow64redir_disable(oldValue))
1724                 {
1725                         return true;
1726                 }
1727         }
1728         return false;
1729 }
1730
1731 ///////////////////////////////////////////////////////////////////////////////
1732 // DEBUGGER CHECK
1733 ///////////////////////////////////////////////////////////////////////////////
1734
1735 QString MUtils::OS::get_envvar(const QString &name)
1736 {
1737         wchar_t *buffer = NULL;
1738         size_t requiredSize = 0, buffSize = 0;
1739         QString result;
1740
1741         forever
1742         {
1743                 //Adjust the buffer size as required first!
1744                 if (buffSize < requiredSize)
1745                 {
1746                         if (buffer)
1747                         {
1748                                 _freea(buffer);
1749                         }
1750                         if (!(buffer = (wchar_t*)_malloca(sizeof(wchar_t) * requiredSize)))
1751                         {
1752                                 break; /*out of memory error!*/
1753                         }
1754                         buffSize = requiredSize;
1755                 }
1756
1757                 //Try to fetch the environment variable now
1758                 const errno_t error = _wgetenv_s(&requiredSize, buffer, buffSize, MUTILS_WCHR(name));
1759                 if(!error)
1760                 {
1761                         if (requiredSize > 0)
1762                         {
1763                                 result = MUTILS_QSTR(buffer);
1764                         }
1765                         break; /*done*/
1766                 }
1767                 else if (error != ERANGE)
1768                 {
1769                         break; /*somethging else went wrong!*/
1770                 }
1771         }
1772
1773         if (buffer)
1774         {
1775                 _freea(buffer);
1776                 buffSize = 0;
1777                 buffer = NULL;
1778         }
1779
1780         return result;
1781 }
1782
1783 bool MUtils::OS::set_envvar(const QString &name, const QString &value)
1784 {
1785         if (!_wputenv_s(MUTILS_WCHR(name), MUTILS_WCHR(value)))
1786         {
1787                 return true;
1788         }
1789         return false;
1790 }
1791
1792 ///////////////////////////////////////////////////////////////////////////////
1793 // NULL DEVICE
1794 ///////////////////////////////////////////////////////////////////////////////
1795
1796 static const QLatin1String NULL_DEVICE("NUL");
1797
1798 const QLatin1String &MUtils::OS::null_device(void)
1799 {
1800         return NULL_DEVICE;
1801 }
1802
1803 ///////////////////////////////////////////////////////////////////////////////
1804 // DEBUGGER CHECK
1805 ///////////////////////////////////////////////////////////////////////////////
1806
1807 #if (!(MUTILS_DEBUG))
1808 static __forceinline bool is_debugger_present(void)
1809 {
1810         __try
1811         {
1812                 CloseHandle((HANDLE)((DWORD_PTR)-3));
1813         }
1814         __except(1)
1815         {
1816                 return true;
1817         }
1818
1819         BOOL bHaveDebugger = FALSE;
1820         if(CheckRemoteDebuggerPresent(GetCurrentProcess(), &bHaveDebugger))
1821         {
1822                 if(bHaveDebugger) return true;
1823         }
1824
1825         return IsDebuggerPresent();
1826 }
1827 static __forceinline bool check_debugger_helper(void)
1828 {
1829         if(is_debugger_present())
1830         {
1831                 MUtils::OS::fatal_exit(L"Not a debug build. Please unload debugger and try again!");
1832                 return true;
1833         }
1834         return false;
1835 }
1836 #else
1837 #define check_debugger_helper() (false)
1838 #endif
1839
1840 void MUtils::OS::check_debugger(void)
1841 {
1842         check_debugger_helper();
1843 }
1844
1845 static volatile bool g_debug_check = check_debugger_helper();
1846
1847 ///////////////////////////////////////////////////////////////////////////////
1848 // FATAL EXIT
1849 ///////////////////////////////////////////////////////////////////////////////
1850
1851 static MUtils::Internal::CriticalSection g_fatal_exit_lock;
1852 static QAtomicInt g_fatal_exit_flag;
1853
1854 static DWORD WINAPI fatal_exit_helper(LPVOID lpParameter)
1855 {
1856         MUtils::OS::system_message_err(L"GURU MEDITATION", (LPWSTR) lpParameter);
1857         return 0;
1858 }
1859
1860 void MUtils::OS::fatal_exit(const wchar_t* const errorMessage)
1861 {
1862         g_fatal_exit_lock.enter();
1863
1864         if(!g_fatal_exit_flag.testAndSetOrdered(0, 1))
1865         {
1866                 return; /*prevent recursive invocation*/
1867         }
1868
1869         if(g_main_thread_id != GetCurrentThreadId())
1870         {
1871                 if(HANDLE hThreadMain = OpenThread(THREAD_SUSPEND_RESUME, FALSE, g_main_thread_id))
1872                 {
1873                         SuspendThread(hThreadMain); /*stop main thread*/
1874                 }
1875         }
1876
1877         if(HANDLE hThread = CreateThread(NULL, 0, fatal_exit_helper, (LPVOID)errorMessage, 0, NULL))
1878         {
1879                 WaitForSingleObject(hThread, INFINITE);
1880         }
1881         else
1882         {
1883                 fatal_exit_helper((LPVOID)errorMessage);
1884         }
1885
1886         for(;;)
1887         {
1888                 TerminateProcess(GetCurrentProcess(), 666);
1889         }
1890 }
1891
1892 ///////////////////////////////////////////////////////////////////////////////