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)[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)[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         //Try SHGetKnownFolderPath() first!
 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                         const QDir folderTemp = QDir(QDir::fromNativeSeparators(MUTILS_QSTR(path)));
 764                         if(folderTemp.exists())
 765                         {
 766                                 folderPath = folderTemp.canonicalPath();
 767                         }
 768                         CoTaskMemFree(path);
 769                 }
 770         }
 771
 772         //Fall back to SHGetFolderPathW()
 773         if (folderPath.isEmpty())
 774         {
 775                 if (const SHGetFolderPath_t known_folders_fpGetFolderPath = MUtils::Win32Utils::resolve<SHGetFolderPath_t>(QLatin1String("shell32"), QLatin1String("SHGetFolderPathW")))
 776                 {
 777                         QScopedArrayPointer<WCHAR> path(new WCHAR[4096]);
 778                         if (known_folders_fpGetFolderPath(NULL, s_folders[folderId].csidl | CSIDL_FLAG_CREATE, NULL, NULL, path.data()) == S_OK)
 779                         {
 780                                 //MessageBoxW(0, path, L"SHGetFolderPathW", MB_TOPMOST);
 781                                 const QDir folderTemp = QDir(QDir::fromNativeSeparators(MUTILS_QSTR(path.data())));
 782                                 if (folderTemp.exists())
 783                                 {
 784                                         folderPath = folderTemp.canonicalPath();
 785                                 }
 786                         }
 787                 }
 788         }
 789
 790         //Update cache
 791         if (!folderPath.isEmpty())
 792         {
 793                 qWarning("g_known_folders_map->insert");
 794                 g_known_folders_map->insert(folderId, folderPath);
 795         }
 796
 797         return folderPath;
 798 }
 799
 800 ///////////////////////////////////////////////////////////////////////////////
 801 // CURRENT DATA & TIME
 802 ///////////////////////////////////////////////////////////////////////////////
 803
 804 QDate MUtils::OS::current_date(void)
 805 {
 806         const DWORD MAX_PROC = 1024;
 807         QScopedArrayPointer<DWORD> processes(new DWORD[MAX_PROC]);
 808         DWORD bytesReturned = 0;
 809
 810         if(!EnumProcesses(processes.data(), sizeof(DWORD) * MAX_PROC, &bytesReturned))
 811         {
 812                 return QDate::currentDate();
 813         }
 814
 815         const DWORD procCount = bytesReturned / sizeof(DWORD);
 816         ULARGE_INTEGER lastStartTime;
 817         memset(&lastStartTime, 0, sizeof(ULARGE_INTEGER));
 818
 819         for(DWORD i = 0; i < procCount; i++)
 820         {
 821                 if(HANDLE hProc = OpenProcess(PROCESS_QUERY_INFORMATION, FALSE, processes[i]))
 822                 {
 823                         FILETIME processTime[4];
 824                         if(GetProcessTimes(hProc, &processTime[0], &processTime[1], &processTime[2], &processTime[3]))
 825                         {
 826                                 ULARGE_INTEGER timeCreation;
 827                                 timeCreation.LowPart  = processTime[0].dwLowDateTime;
 828                                 timeCreation.HighPart = processTime[0].dwHighDateTime;
 829                                 if(timeCreation.QuadPart > lastStartTime.QuadPart)
 830                                 {
 831                                         lastStartTime.QuadPart = timeCreation.QuadPart;
 832                                 }
 833                         }
 834                         CloseHandle(hProc);
 835                 }
 836         }
 837
 838         FILETIME lastStartTime_fileTime;
 839         lastStartTime_fileTime.dwHighDateTime = lastStartTime.HighPart;
 840         lastStartTime_fileTime.dwLowDateTime  = lastStartTime.LowPart;
 841
 842         FILETIME lastStartTime_localTime;
 843         if(!FileTimeToLocalFileTime(&lastStartTime_fileTime, &lastStartTime_localTime))
 844         {
 845                 memcpy(&lastStartTime_localTime, &lastStartTime_fileTime, sizeof(FILETIME));
 846         }
 847
 848         SYSTEMTIME lastStartTime_system;
 849         if(!FileTimeToSystemTime(&lastStartTime_localTime, &lastStartTime_system))
 850         {
 851                 memset(&lastStartTime_system, 0, sizeof(SYSTEMTIME));
 852                 lastStartTime_system.wYear = 1970; lastStartTime_system.wMonth = lastStartTime_system.wDay = 1;
 853         }
 854
 855         const QDate currentDate = QDate::currentDate();
 856         const QDate processDate = QDate(lastStartTime_system.wYear, lastStartTime_system.wMonth, lastStartTime_system.wDay);
 857         return (currentDate >= processDate) ? currentDate : processDate;
 858 }
 859
 860 quint64 MUtils::OS::current_file_time(void)
 861 {
 862         FILETIME fileTime;
 863         GetSystemTimeAsFileTime(&fileTime);
 864
 865         ULARGE_INTEGER temp;
 866         temp.HighPart = fileTime.dwHighDateTime;
 867         temp.LowPart = fileTime.dwLowDateTime;
 868
 869         return temp.QuadPart;
 870 }
 871
 872 ///////////////////////////////////////////////////////////////////////////////
 873 // FILE PATH FROM FD
 874 ///////////////////////////////////////////////////////////////////////////////
 875
 876 typedef DWORD(_stdcall *GetPathNameByHandleFun)(HANDLE hFile, LPWSTR lpszFilePath, DWORD cchFilePath, DWORD dwFlags);
 877
 878 static QString get_file_path_drive_list(void)
 879 {
 880         QString list;
 881         const DWORD len = GetLogicalDriveStringsW(0, NULL);
 882         if (len > 0)
 883         {
 884                 if (wchar_t *const buffer = (wchar_t*) _malloca(sizeof(wchar_t) * len))
 885                 {
 886                         const DWORD ret = GetLogicalDriveStringsW(len, buffer);
 887                         if ((ret > 0) && (ret < len))
 888                         {
 889                                 const wchar_t *ptr = buffer;
 890                                 while (const size_t current_len = wcslen(ptr))
 891                                 {
 892                                         list.append(QChar(*reinterpret_cast<const ushort*>(ptr)));
 893                                         ptr += (current_len + 1);
 894                                 }
 895                         }
 896                         _freea(buffer);
 897                 }
 898         }
 899         return list;
 900 }
 901
 902 static void get_file_path_translate(QString &path)
 903 {
 904         static const DWORD BUFSIZE = 2048;
 905         wchar_t buffer[BUFSIZE], drive[3];
 906
 907         const QString driveList = get_file_path_drive_list();
 908         wcscpy_s(drive, 3, L"?:");
 909         for (const wchar_t *current = MUTILS_WCHR(driveList); *current; current++)
 910         {
 911                 drive[0] = (*current);
 912                 if (QueryDosDeviceW(drive, buffer, MAX_PATH))
 913                 {
 914                         const QString prefix = MUTILS_QSTR(buffer);
 915                         if (path.startsWith(prefix, Qt::CaseInsensitive))
 916                         {
 917                                 path.remove(0, prefix.length()).prepend(QLatin1Char(':')).prepend(QChar(*reinterpret_cast<const ushort*>(current)));
 918                                 break;
 919                         }
 920                 }
 921         }
 922 }
 923
 924 static QString get_file_path_fallback(const HANDLE &hFile)
 925 {
 926         QString filePath;
 927
 928         const HANDLE hFileMap = CreateFileMappingW(hFile, NULL, PAGE_READONLY, 0, 1, NULL);
 929         if (hFileMap)
 930         {
 931                 void *const pMem = MapViewOfFile(hFileMap, FILE_MAP_READ, 0, 0, 1);
 932                 if (pMem)
 933                 {
 934                         static const size_t BUFFSIZE = 2048;
 935                         wchar_t buffer[BUFFSIZE];
 936                         if (GetMappedFileNameW(GetCurrentProcess(), pMem, buffer, BUFFSIZE) > 0)
 937                         {
 938                                 filePath = MUTILS_QSTR(buffer);
 939                         }
 940                         UnmapViewOfFile(pMem);
 941                 }
 942                 CloseHandle(hFileMap);
 943         }
 944
 945         if (!filePath.isEmpty())
 946         {
 947                 get_file_path_translate(filePath);
 948         }
 949
 950         return filePath;
 951 }
 952
 953 QString MUtils::OS::get_file_path(const int &fd)
 954 {
 955         if (fd >= 0)
 956         {
 957                 const GetPathNameByHandleFun getPathNameByHandleFun = MUtils::Win32Utils::resolve<GetPathNameByHandleFun>(QLatin1String("kernel32"), QLatin1String("GetFinalPathNameByHandleW"));
 958                 if (!getPathNameByHandleFun)
 959                 {
 960                         return get_file_path_fallback((HANDLE)_get_osfhandle(fd));
 961                 }
 962
 963                 const HANDLE handle = (HANDLE) _get_osfhandle(fd);
 964                 const DWORD len = getPathNameByHandleFun(handle, NULL, 0, FILE_NAME_OPENED);
 965                 if (len > 0)
 966                 {
 967                         if (wchar_t *const buffer = (wchar_t*)_malloca(sizeof(wchar_t) * len))
 968                         {
 969                                 const DWORD ret = getPathNameByHandleFun(handle, buffer, len, FILE_NAME_OPENED);
 970                                 if ((ret > 0) && (ret < len))
 971                                 {
 972                                         const QString path(MUTILS_QSTR(buffer));
 973                                         return path.startsWith(QLatin1String("\\\\?\\")) ? path.mid(4) : path;
 974                                 }
 975                                 _freea(buffer);
 976                         }
 977                 }
 978         }
 979
 980         return QString();
 981 }
 982
 983 ///////////////////////////////////////////////////////////////////////////////
 984 // PROCESS ELEVATION
 985 ///////////////////////////////////////////////////////////////////////////////
 986
 987 static bool user_is_admin_helper(void)
 988 {
 989         HANDLE hToken = NULL;
 990         if(!OpenProcessToken(GetCurrentProcess(), TOKEN_QUERY, &hToken))
 991         {
 992                 return false;
 993         }
 994
 995         DWORD dwSize = 0;
 996         if(!GetTokenInformation(hToken, TokenGroups, NULL, 0, &dwSize))
 997         {
 998                 if(GetLastError() != ERROR_INSUFFICIENT_BUFFER)
 999                 {
1000                         CloseHandle(hToken);
1001                         return false;
1002                 }
1003         }
1004
1005         PTOKEN_GROUPS lpGroups = (PTOKEN_GROUPS) malloc(dwSize);
1006         if(!lpGroups)
1007         {
1008                 CloseHandle(hToken);
1009                 return false;
1010         }
1011
1012         if(!GetTokenInformation(hToken, TokenGroups, lpGroups, dwSize, &dwSize))
1013         {
1014                 free(lpGroups);
1015                 CloseHandle(hToken);
1016                 return false;
1017         }
1018
1019         PSID lpSid = NULL; SID_IDENTIFIER_AUTHORITY Authority = {SECURITY_NT_AUTHORITY};
1020         if(!AllocateAndInitializeSid(&Authority, 2, SECURITY_BUILTIN_DOMAIN_RID, DOMAIN_ALIAS_RID_ADMINS, 0, 0, 0, 0, 0, 0, &lpSid))
1021         {
1022                 free(lpGroups);
1023                 CloseHandle(hToken);
1024                 return false;
1025         }
1026
1027         bool bResult = false;
1028         for(DWORD i = 0; i < lpGroups->GroupCount; i++)
1029         {
1030                 if(EqualSid(lpSid, lpGroups->Groups[i].Sid))
1031                 {
1032                         bResult = true;
1033                         break;
1034                 }
1035         }
1036
1037         FreeSid(lpSid);
1038         free(lpGroups);
1039         CloseHandle(hToken);
1040         return bResult;
1041 }
1042
1043 bool MUtils::OS::is_elevated(bool *bIsUacEnabled)
1044 {
1045         if(bIsUacEnabled)
1046         {
1047                 *bIsUacEnabled = false;
1048         }
1049
1050         bool bIsProcessElevated = false;
1051         HANDLE hToken = NULL;
1052
1053         if(OpenProcessToken(GetCurrentProcess(), TOKEN_QUERY, &hToken))
1054         {
1055                 TOKEN_ELEVATION_TYPE tokenElevationType;
1056                 DWORD returnLength;
1057                 if(GetTokenInformation(hToken, TokenElevationType, &tokenElevationType, sizeof(TOKEN_ELEVATION_TYPE), &returnLength))
1058                 {
1059                         if(returnLength == sizeof(TOKEN_ELEVATION_TYPE))
1060                         {
1061                                 switch(tokenElevationType)
1062                                 {
1063                                 case TokenElevationTypeDefault:
1064                                         qDebug("Process token elevation type: Default -> UAC is disabled.\n");
1065                                         break;
1066                                 case TokenElevationTypeFull:
1067                                         qWarning("Process token elevation type: Full -> potential security risk!\n");
1068                                         bIsProcessElevated = true;
1069                                         if(bIsUacEnabled) *bIsUacEnabled = true;
1070                                         break;
1071                                 case TokenElevationTypeLimited:
1072                                         qDebug("Process token elevation type: Limited -> not elevated.\n");
1073                                         if(bIsUacEnabled) *bIsUacEnabled = true;
1074                                         break;
1075                                 default:
1076                                         qWarning("Unknown tokenElevationType value: %d", tokenElevationType);
1077                                         break;
1078                                 }
1079                         }
1080                         else
1081                         {
1082                                 qWarning("GetTokenInformation() return an unexpected size!");
1083                         }
1084                 }
1085                 CloseHandle(hToken);
1086         }
1087         else
1088         {
1089                 qWarning("Failed to open process token!");
1090         }
1091
1092         return bIsProcessElevated;
1093 }
1094
1095 bool MUtils::OS::user_is_admin(void)
1096 {
1097         bool isAdmin = false;
1098
1099         //Check for process elevation and UAC support first!
1100         if(MUtils::OS::is_elevated(&isAdmin))
1101         {
1102                 qWarning("Process is elevated -> user is admin!");
1103                 return true;
1104         }
1105
1106         //If not elevated and UAC is not available -> user must be in admin group!
1107         if(!isAdmin)
1108         {
1109                 qDebug("UAC is disabled/unavailable -> checking for Administrators group");
1110                 isAdmin = user_is_admin_helper();
1111         }
1112
1113         return isAdmin;
1114 }
1115
1116 ///////////////////////////////////////////////////////////////////////////////
1117 // NETWORK STATE
1118 ///////////////////////////////////////////////////////////////////////////////
1119
1120 int MUtils::OS::network_status(void)
1121 {
1122         DWORD dwFlags;
1123         const BOOL ret = IsNetworkAlive(&dwFlags);
1124         if(GetLastError() == 0)
1125         {
1126                 return (ret != FALSE) ? NETWORK_TYPE_YES : NETWORK_TYPE_NON;
1127         }
1128         return NETWORK_TYPE_ERR;
1129 }
1130
1131 ///////////////////////////////////////////////////////////////////////////////
1132 // MESSAGE HANDLER
1133 ///////////////////////////////////////////////////////////////////////////////
1134
1135 bool MUtils::OS::handle_os_message(const void *const message, long *result)
1136 {
1137         const MSG *const msg = reinterpret_cast<const MSG*>(message);
1138
1139         switch(msg->message)
1140         {
1141         case WM_QUERYENDSESSION:
1142                 qWarning("WM_QUERYENDSESSION message received!");
1143                 *result = MUtils::GUI::broadcast(MUtils::GUI::USER_EVENT_QUERYENDSESSION, false) ? TRUE : FALSE;
1144                 return true;
1145         case WM_ENDSESSION:
1146                 qWarning("WM_ENDSESSION message received!");
1147                 if(msg->wParam == TRUE)
1148                 {
1149                         MUtils::GUI::broadcast(MUtils::GUI::USER_EVENT_ENDSESSION, false);
1150                         MUtils::GUI::force_quit();
1151                         exit(1);
1152                 }
1153                 *result = 0;
1154                 return true;
1155         default:
1156                 /*ignore this message and let Qt handle it*/
1157                 return false;
1158         }
1159 }
1160
1161 ///////////////////////////////////////////////////////////////////////////////
1162 // SLEEP
1163 ///////////////////////////////////////////////////////////////////////////////
1164
1165 void MUtils::OS::sleep_ms(const size_t &duration)
1166 {
1167         Sleep((DWORD) duration);
1168 }
1169
1170 ///////////////////////////////////////////////////////////////////////////////
1171 // EXECUTABLE CHECK
1172 ///////////////////////////////////////////////////////////////////////////////
1173
1174 static int g_library_as_image_resource_supported = -1;
1175 static QReadWriteLock g_library_as_image_resource_supported_lock;
1176
1177 static bool library_as_image_resource_supported()
1178 {
1179         QReadLocker readLocker(&g_library_as_image_resource_supported_lock);
1180         if (g_library_as_image_resource_supported >= 0)
1181         {
1182                 return (g_library_as_image_resource_supported > 0);
1183         }
1184
1185         readLocker.unlock();
1186         QWriteLocker writeLocker(&g_library_as_image_resource_supported_lock);
1187
1188         if (g_library_as_image_resource_supported < 0)
1189         {
1190                 g_library_as_image_resource_supported = 0;
1191                 OSVERSIONINFOEXW osvi;
1192                 if (rtl_get_version(&osvi))
1193                 {
1194                         if ((osvi.dwPlatformId == VER_PLATFORM_WIN32_NT) && (osvi.dwMajorVersion >= 6U))
1195                         {
1196                                 g_library_as_image_resource_supported = 1;
1197                         }
1198                 }
1199         }
1200
1201         return (g_library_as_image_resource_supported > 0);
1202 }
1203
1204 bool MUtils::OS::is_executable_file(const QString &path)
1205 {
1206         DWORD binaryType;
1207         if(GetBinaryType(MUTILS_WCHR(QDir::toNativeSeparators(path)), &binaryType))
1208         {
1209                 return ((binaryType == SCS_32BIT_BINARY) || (binaryType == SCS_64BIT_BINARY));
1210         }
1211
1212         const DWORD errorCode = GetLastError();
1213         qWarning("GetBinaryType() failed with error: 0x%08X", errorCode);
1214         return false;
1215 }
1216
1217 bool MUtils::OS::is_library_file(const QString &path)
1218 {
1219         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);
1220         if (const HMODULE hMod = LoadLibraryEx(MUTILS_WCHR(QDir::toNativeSeparators(path)), NULL, flags))
1221         {
1222                 FreeLibrary(hMod);
1223                 return true;
1224         }
1225
1226         const DWORD errorCode = GetLastError();
1227         qWarning("LoadLibraryEx() failed with error: 0x%08X", errorCode);
1228         return false;
1229 }
1230
1231 ///////////////////////////////////////////////////////////////////////////////
1232 // HIBERNATION / SHUTDOWN
1233 ///////////////////////////////////////////////////////////////////////////////
1234
1235 bool MUtils::OS::is_hibernation_supported(void)
1236 {
1237         bool hibernationSupported = false;
1238
1239         SYSTEM_POWER_CAPABILITIES pwrCaps;
1240         SecureZeroMemory(&pwrCaps, sizeof(SYSTEM_POWER_CAPABILITIES));
1241
1242         if(GetPwrCapabilities(&pwrCaps))
1243         {
1244                 hibernationSupported = pwrCaps.SystemS4 && pwrCaps.HiberFilePresent;
1245         }
1246
1247         return hibernationSupported;
1248 }
1249
1250 bool MUtils::OS::shutdown_computer(const QString &message, const unsigned long timeout, const bool forceShutdown, const bool hibernate)
1251 {
1252         HANDLE hToken = NULL;
1253
1254         if(OpenProcessToken(GetCurrentProcess(), TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken))
1255         {
1256                 TOKEN_PRIVILEGES privileges;
1257                 memset(&privileges, 0, sizeof(TOKEN_PRIVILEGES));
1258                 privileges.PrivilegeCount = 1;
1259                 privileges.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
1260
1261                 if(LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME, &privileges.Privileges[0].Luid))
1262                 {
1263                         if(AdjustTokenPrivileges(hToken, FALSE, &privileges, NULL, NULL, NULL))
1264                         {
1265                                 if(hibernate)
1266                                 {
1267                                         if(SetSuspendState(TRUE, TRUE, TRUE))
1268                                         {
1269                                                 return true;
1270                                         }
1271                                 }
1272                                 const DWORD reason = SHTDN_REASON_MAJOR_APPLICATION | SHTDN_REASON_FLAG_PLANNED;
1273                                 return InitiateSystemShutdownEx(NULL, const_cast<wchar_t*>(MUTILS_WCHR(message)), timeout, forceShutdown ? TRUE : FALSE, FALSE, reason);
1274                         }
1275                 }
1276         }
1277
1278         return false;
1279 }
1280
1281 ///////////////////////////////////////////////////////////////////////////////
1282 // FREE DISKSPACE
1283 ///////////////////////////////////////////////////////////////////////////////
1284
1285 bool MUtils::OS::free_diskspace(const QString &path, quint64 &freeSpace)
1286 {
1287         ULARGE_INTEGER freeBytesAvailable, totalNumberOfBytes, totalNumberOfFreeBytes;
1288         if(GetDiskFreeSpaceExW(reinterpret_cast<const wchar_t*>(QDir::toNativeSeparators(path).utf16()), &freeBytesAvailable, &totalNumberOfBytes, &totalNumberOfFreeBytes))
1289         {
1290                 freeSpace = freeBytesAvailable.QuadPart;
1291                 return true;;
1292         }
1293
1294         freeSpace = -1;
1295         return false;
1296 }
1297
1298 ///////////////////////////////////////////////////////////////////////////////
1299 // DRIVE TYPE
1300 ///////////////////////////////////////////////////////////////////////////////
1301
1302 static wchar_t get_drive_letter(const QString &path)
1303 {
1304         QString nativePath = QDir::toNativeSeparators(path);
1305         while (nativePath.startsWith("\\\\?\\") || nativePath.startsWith("\\\\.\\"))
1306         {
1307                 nativePath = QDir::toNativeSeparators(nativePath.mid(4));
1308         }
1309         if ((path.length() > 1) && (path[1] == QLatin1Char(':')))
1310         {
1311                 const wchar_t letter = static_cast<wchar_t>(path[0].unicode());
1312                 if (((letter >= 'A') && (letter <= 'Z')) || ((letter >= 'a') && (letter <= 'z')))
1313                 {
1314                         return towupper(letter);
1315                 }
1316         }
1317         return L'\0'; /*invalid path spec*/
1318 }
1319
1320 static QSet<DWORD> get_physical_drive_ids(const wchar_t drive_letter)
1321 {
1322         QSet<DWORD> physical_drives;
1323         wchar_t driveName[8];
1324         _snwprintf_s(driveName, 8, _TRUNCATE, L"\\\\.\\%c:", drive_letter);
1325         const HANDLE hDrive = CreateFileW(driveName, 0, FILE_SHARE_READ | FILE_SHARE_WRITE, NULL, OPEN_EXISTING, 0, NULL);
1326         if (hDrive && (hDrive != INVALID_HANDLE_VALUE))
1327         {
1328                 const size_t BUFF_SIZE = sizeof(VOLUME_DISK_EXTENTS) + (32U * sizeof(DISK_EXTENT));
1329                 VOLUME_DISK_EXTENTS *const diskExtents = (VOLUME_DISK_EXTENTS*)_malloca(BUFF_SIZE);
1330                 DWORD dwSize;
1331                 if (DeviceIoControl(hDrive, IOCTL_VOLUME_GET_VOLUME_DISK_EXTENTS, NULL, 0, (LPVOID)diskExtents, (DWORD)BUFF_SIZE, (LPDWORD)&dwSize, NULL))
1332                 {
1333                         for (DWORD index = 0U; index < diskExtents->NumberOfDiskExtents; ++index)
1334                         {
1335                                 physical_drives.insert(diskExtents->Extents[index].DiskNumber);
1336                         }
1337                 }
1338                 _freea(diskExtents);
1339                 CloseHandle(hDrive);
1340         }
1341         return physical_drives;
1342 }
1343
1344 static bool incurs_seek_penalty(const DWORD device_id)
1345 {
1346         wchar_t driveName[24];
1347         _snwprintf_s(driveName, 24, _TRUNCATE, L"\\\\?\\PhysicalDrive%u", device_id);
1348         const HANDLE hDevice = CreateFileW(driveName, 0, FILE_SHARE_READ | FILE_SHARE_WRITE, NULL, OPEN_EXISTING, 0, NULL);
1349         bool seeking_penalty = true;
1350         if (hDevice && (hDevice != INVALID_HANDLE_VALUE))
1351         {
1352                 STORAGE_PROPERTY_QUERY spq;
1353                 DEVICE_SEEK_PENALTY_DESCRIPTOR dspd;
1354                 memset(&spq, 0, sizeof(STORAGE_PROPERTY_QUERY));
1355                 spq.PropertyId = (STORAGE_PROPERTY_ID)StorageDeviceSeekPenaltyProperty;
1356                 spq.QueryType = PropertyStandardQuery;
1357                 DWORD dwSize;
1358                 if (DeviceIoControl(hDevice, IOCTL_STORAGE_QUERY_PROPERTY, (LPVOID)&spq, (DWORD)sizeof(spq), (LPVOID)&dspd, (DWORD)sizeof(dspd), (LPDWORD)&dwSize, NULL))
1359                 {
1360                         seeking_penalty = dspd.IncursSeekPenalty;
1361                 }
1362                 CloseHandle(hDevice);
1363         }
1364         return seeking_penalty;
1365 }
1366
1367 static bool is_fast_seeking_drive(const wchar_t drive_letter)
1368 {
1369         bool fast_seeking = false;
1370         const QSet<DWORD> physical_drive_ids = get_physical_drive_ids(drive_letter);
1371         if (!physical_drive_ids.empty())
1372         {
1373                 fast_seeking = true;
1374                 for (QSet<DWORD>::const_iterator iter = physical_drive_ids.constBegin(); iter != physical_drive_ids.constEnd(); ++iter)
1375                 {
1376                         fast_seeking = fast_seeking && (!incurs_seek_penalty(*iter));
1377                 }
1378         }
1379         return fast_seeking;
1380 }
1381
1382 MUtils::OS::drive_type_t MUtils::OS::get_drive_type(const QString &path, bool *fast_seeking)
1383 {
1384         drive_type_t driveType = DRIVE_TYPE_ERR;
1385         const wchar_t driveLetter = get_drive_letter(path);
1386         if (driveLetter)
1387         {
1388                 wchar_t driveName[8];
1389                 _snwprintf_s(driveName, 8, _TRUNCATE, L"\\\\.\\%c:\\", driveLetter);
1390                 switch (GetDriveTypeW(driveName))
1391                 {
1392                         case DRIVE_REMOVABLE: driveType = DRIVE_TYPE_FDD; break;
1393                         case DRIVE_FIXED:     driveType = DRIVE_TYPE_HDD; break;
1394                         case DRIVE_REMOTE:    driveType = DRIVE_TYPE_NET; break;
1395                         case DRIVE_CDROM:     driveType = DRIVE_TYPE_OPT; break;
1396                         case DRIVE_RAMDISK:   driveType = DRIVE_TYPE_RAM; break;
1397                 }
1398         }
1399         if (fast_seeking)
1400         {
1401                 if (driveType == DRIVE_TYPE_HDD)
1402                 {
1403                         *fast_seeking = is_fast_seeking_drive(driveLetter);
1404                 }
1405                 else
1406                 {
1407                         *fast_seeking = (driveType == DRIVE_TYPE_RAM);
1408                 }
1409         }
1410         return driveType;
1411 }
1412
1413 ///////////////////////////////////////////////////////////////////////////////
1414 // SHELL OPEN
1415 ///////////////////////////////////////////////////////////////////////////////
1416
1417 bool MUtils::OS::shell_open(const QWidget *parent, const QString &url, const QString &parameters, const QString &directory, const bool explore)
1418 {
1419         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;
1420 }
1421
1422 bool MUtils::OS::shell_open(const QWidget *parent, const QString &url, const bool explore)
1423 {
1424         return shell_open(parent, url, QString(), QString(), explore);
1425 }
1426
1427 ///////////////////////////////////////////////////////////////////////////////
1428 // OPEN MEDIA FILE
1429 ///////////////////////////////////////////////////////////////////////////////
1430
1431 bool MUtils::OS::open_media_file(const QString &mediaFilePath)
1432 {
1433         const static wchar_t *registryPrefix[2] = { L"SOFTWARE\\", L"SOFTWARE\\Wow6432Node\\" };
1434         const static wchar_t *registryKeys[3] =
1435         {
1436                 L"Microsoft\\Windows\\CurrentVersion\\Uninstall\\{97D341C8-B0D1-4E4A-A49A-C30B52F168E9}",
1437                 L"Microsoft\\Windows\\CurrentVersion\\Uninstall\\{DB9E4EAB-2717-499F-8D56-4CC8A644AB60}",
1438                 L"foobar2000"
1439         };
1440         const static wchar_t *appNames[4] = { L"smplayer_portable.exe", L"smplayer.exe", L"MPUI.exe", L"foobar2000.exe" };
1441         const static wchar_t *valueNames[2] = { L"InstallLocation", L"InstallDir" };
1442
1443         for(size_t i = 0; i < 3; i++)
1444         {
1445                 for(size_t j = 0; j < 2; j++)
1446                 {
1447                         QString mplayerPath;
1448                         HKEY registryKeyHandle = NULL;
1449
1450                         const QString currentKey = MUTILS_QSTR(registryPrefix[j]).append(MUTILS_QSTR(registryKeys[i]));
1451                         if(RegOpenKeyExW(HKEY_LOCAL_MACHINE, MUTILS_WCHR(currentKey), 0, KEY_READ, &registryKeyHandle) == ERROR_SUCCESS)
1452                         {
1453                                 for(size_t k = 0; k < 2; k++)
1454                                 {
1455                                         wchar_t Buffer[4096];
1456                                         DWORD BuffSize = sizeof(wchar_t*) * 4096;
1457                                         DWORD DataType = REG_NONE;
1458                                         if(RegQueryValueExW(registryKeyHandle, valueNames[k], 0, &DataType, reinterpret_cast<BYTE*>(Buffer), &BuffSize) == ERROR_SUCCESS)
1459                                         {
1460                                                 if((DataType == REG_SZ) || (DataType == REG_EXPAND_SZ) || (DataType == REG_LINK))
1461                                                 {
1462                                                         mplayerPath = MUTILS_QSTR(Buffer);
1463                                                         break;
1464                                                 }
1465                                         }
1466                                 }
1467                                 RegCloseKey(registryKeyHandle);
1468                         }
1469
1470                         if(!mplayerPath.isEmpty())
1471                         {
1472                                 QDir mplayerDir(mplayerPath);
1473                                 if(mplayerDir.exists())
1474                                 {
1475                                         for(size_t k = 0; k < 4; k++)
1476                                         {
1477                                                 if(mplayerDir.exists(MUTILS_QSTR(appNames[k])))
1478                                                 {
1479                                                         qDebug("Player found at:\n%s\n", MUTILS_UTF8(mplayerDir.absoluteFilePath(MUTILS_QSTR(appNames[k]))));
1480                                                         QProcess::startDetached(mplayerDir.absoluteFilePath(MUTILS_QSTR(appNames[k])), QStringList() << QDir::toNativeSeparators(mediaFilePath));
1481                                                         return true;
1482                                                 }
1483                                         }
1484                                 }
1485                         }
1486                 }
1487         }
1488         return false;
1489 }
1490
1491 ///////////////////////////////////////////////////////////////////////////////
1492 // DEBUGGER CHECK
1493 ///////////////////////////////////////////////////////////////////////////////
1494
1495 static bool change_process_priority_helper(const HANDLE hProcess, const int priority)
1496 {
1497         bool ok = false;
1498
1499         switch(qBound(-2, priority, 2))
1500         {
1501         case 2:
1502                 ok = (SetPriorityClass(hProcess, HIGH_PRIORITY_CLASS) == TRUE);
1503                 break;
1504         case 1:
1505                 if(!(ok = (SetPriorityClass(hProcess, ABOVE_NORMAL_PRIORITY_CLASS) == TRUE)))
1506                 {
1507                         ok = (SetPriorityClass(hProcess, HIGH_PRIORITY_CLASS) == TRUE);
1508                 }
1509                 break;
1510         case 0:
1511                 ok = (SetPriorityClass(hProcess, NORMAL_PRIORITY_CLASS) == TRUE);
1512                 break;
1513         case -1:
1514                 if(!(ok = (SetPriorityClass(hProcess, BELOW_NORMAL_PRIORITY_CLASS) == TRUE)))
1515                 {
1516                         ok = (SetPriorityClass(hProcess, IDLE_PRIORITY_CLASS) == TRUE);
1517                 }
1518                 break;
1519         case -2:
1520                 ok = (SetPriorityClass(hProcess, IDLE_PRIORITY_CLASS) == TRUE);
1521                 break;
1522         }
1523
1524         return ok;
1525 }
1526
1527 bool MUtils::OS::change_process_priority(const int priority)
1528 {
1529         return change_process_priority_helper(GetCurrentProcess(), priority);
1530 }
1531
1532 bool MUtils::OS::change_process_priority(const QProcess *proc, const int priority)
1533 {
1534         if(Q_PID qPid = proc->pid())
1535         {
1536                 return change_process_priority_helper(qPid->hProcess, priority);
1537         }
1538         else
1539         {
1540                 return false;
1541         }
1542 }
1543
1544 ///////////////////////////////////////////////////////////////////////////////
1545 // PROCESS ID
1546 ///////////////////////////////////////////////////////////////////////////////
1547
1548 quint32 MUtils::OS::process_id(void)
1549 {
1550         return GetCurrentProcessId();
1551 }
1552
1553 quint32 MUtils::OS::process_id(const QProcess *const proc)
1554 {
1555         PROCESS_INFORMATION *procInf = proc->pid();
1556         return (procInf) ? procInf->dwProcessId : 0;
1557 }
1558
1559 quint32 MUtils::OS::thread_id(void)
1560 {
1561         return GetCurrentThreadId();
1562 }
1563
1564 quint32 MUtils::OS::thread_id(const QProcess *const proc)
1565 {
1566         PROCESS_INFORMATION *procInf = proc->pid();
1567         return (procInf) ? procInf->dwThreadId : 0;
1568 }
1569
1570 ///////////////////////////////////////////////////////////////////////////////
1571 // PROCESS SUSPEND/RESUME
1572 ///////////////////////////////////////////////////////////////////////////////
1573
1574 bool MUtils::OS::suspend_process(const QProcess *proc, const bool suspend)
1575 {
1576         if(Q_PID pid = proc->pid())
1577         {
1578                 if(suspend)
1579                 {
1580                         return (SuspendThread(pid->hThread) != ((DWORD) -1));
1581                 }
1582                 else
1583                 {
1584                         return (ResumeThread(pid->hThread)  != ((DWORD) -1));
1585                 }
1586         }
1587         else
1588         {
1589                 return false;
1590         }
1591 }
1592
1593 ///////////////////////////////////////////////////////////////////////////////
1594 // SYSTEM TIMER
1595 ///////////////////////////////////////////////////////////////////////////////
1596
1597 bool MUtils::OS::setup_timer_resolution(const quint32 &interval)
1598 {
1599         return timeBeginPeriod(interval) == TIMERR_NOERROR;
1600 }
1601
1602 bool MUtils::OS::reset_timer_resolution(const quint32 &interval)
1603 {
1604         return timeEndPeriod(interval) == TIMERR_NOERROR;
1605 }
1606
1607 ///////////////////////////////////////////////////////////////////////////////
1608 // SET FILE TIME
1609 ///////////////////////////////////////////////////////////////////////////////
1610
1611 static QScopedPointer<QDateTime> s_epoch;
1612 static QReadWriteLock            s_epochLock;
1613
1614 static const QDateTime *get_epoch(void)
1615 {
1616         QReadLocker rdLock(&s_epochLock);
1617
1618         if (s_epoch.isNull())
1619         {
1620                 rdLock.unlock();
1621                 QWriteLocker wrLock(&s_epochLock);
1622                 if (s_epoch.isNull())
1623                 {
1624                         s_epoch.reset(new QDateTime(QDate(1601, 1, 1), QTime(0, 0, 0, 0), Qt::UTC));
1625                 }
1626                 wrLock.unlock();
1627                 rdLock.relock();
1628         }
1629
1630         return s_epoch.data();
1631 }
1632
1633 static FILETIME *qt_time_to_file_time(FILETIME *const fileTime, const QDateTime &dateTime)
1634 {
1635         memset(fileTime, 0, sizeof(FILETIME));
1636
1637         if (const QDateTime *const epoch = get_epoch())
1638         {
1639                 const qint64 msecs = epoch->msecsTo(dateTime);
1640                 if (msecs > 0)
1641                 {
1642                         const quint64 ticks = 10000U * quint64(msecs);
1643                         fileTime->dwHighDateTime = ((ticks >> 32) & 0xFFFFFFFF);
1644                         fileTime->dwLowDateTime = (ticks & 0xFFFFFFFF);
1645                         return fileTime;
1646                 }
1647         }
1648
1649         return NULL;
1650 }
1651
1652 static bool set_file_time(const HANDLE hFile, const QDateTime &created, const QDateTime &lastMod, const QDateTime &lastAcc)
1653 {
1654         FILETIME ftCreated, ftLastMod, ftLastAcc;
1655
1656         FILETIME *const pCreated = created.isValid() ? qt_time_to_file_time(&ftCreated, created) : NULL;
1657         FILETIME *const pLastMod = lastMod.isValid() ? qt_time_to_file_time(&ftLastMod, lastMod) : NULL;
1658         FILETIME *const pLastAcc = lastAcc.isValid() ? qt_time_to_file_time(&ftLastAcc, lastAcc) : NULL;
1659
1660         if (pCreated || pLastMod || pLastAcc)
1661         {
1662                 return (SetFileTime(hFile, pCreated, pLastAcc, pLastMod) != FALSE);
1663         }
1664
1665         return false;
1666 }
1667
1668 bool MUtils::OS::set_file_time(const QFile &file, const QDateTime &created, const QDateTime &lastMod, const QDateTime &lastAcc)
1669 {
1670         const int fd = file.handle();
1671         if (fd >= 0)
1672         {
1673                 return set_file_time((HANDLE)_get_osfhandle(fd), created, lastMod, lastAcc);
1674         }
1675         return false;
1676 }
1677
1678 bool MUtils::OS::set_file_time(const QString &path, const QDateTime &created, const QDateTime &lastMod, const QDateTime &lastAcc)
1679 {
1680         const HANDLE hFile = CreateFileW(MUTILS_WCHR(path), FILE_WRITE_ATTRIBUTES, FILE_SHARE_READ, NULL, OPEN_EXISTING, 0, 0);
1681         bool okay = false;
1682         if ((hFile != NULL) && (hFile != INVALID_HANDLE_VALUE))
1683         {
1684                 okay = set_file_time(hFile, created, lastMod, lastAcc);
1685                 CloseHandle(hFile);
1686         }
1687         return okay;
1688 }
1689
1690 ///////////////////////////////////////////////////////////////////////////////
1691 // CHECK KEY STATE
1692 ///////////////////////////////////////////////////////////////////////////////
1693
1694 bool MUtils::OS::check_key_state_esc(void)
1695 {
1696         return (GetAsyncKeyState(VK_ESCAPE) & 0x0001) != 0;
1697 }
1698
1699 ///////////////////////////////////////////////////////////////////////////////
1700 // SHELL CHANGE NOTIFICATION
1701 ///////////////////////////////////////////////////////////////////////////////
1702
1703 void MUtils::OS::shell_change_notification(void)
1704 {
1705         SHChangeNotify(SHCNE_ASSOCCHANGED, SHCNF_IDLIST, NULL, NULL);
1706 }
1707
1708 ///////////////////////////////////////////////////////////////////////////////
1709 // WOW64 REDIRECTION
1710 ///////////////////////////////////////////////////////////////////////////////
1711
1712 typedef BOOL (_stdcall *Wow64DisableWow64FsRedirectionFun)(void *OldValue);
1713 typedef BOOL (_stdcall *Wow64RevertWow64FsRedirectionFun )(void *OldValue);
1714
1715 bool MUtils::OS::wow64fsredir_disable(void *oldValue)
1716 {
1717         const Wow64DisableWow64FsRedirectionFun wow64redir_disable = MUtils::Win32Utils::resolve<Wow64DisableWow64FsRedirectionFun>(QLatin1String("kernel32"), QLatin1String("Wow64DisableWow64FsRedirection"));
1718         if(wow64redir_disable)
1719         {
1720                 if (wow64redir_disable(oldValue))
1721                 {
1722                         return true;
1723                 }
1724         }
1725         return false;
1726 }
1727
1728 bool MUtils::OS::wow64fsredir_revert(void *oldValue)
1729 {
1730         const Wow64RevertWow64FsRedirectionFun wow64redir_disable = MUtils::Win32Utils::resolve<Wow64RevertWow64FsRedirectionFun>(QLatin1String("kernel32"), QLatin1String("Wow64RevertWow64FsRedirection"));
1731         if (wow64redir_disable)
1732         {
1733                 if (wow64redir_disable(oldValue))
1734                 {
1735                         return true;
1736                 }
1737         }
1738         return false;
1739 }
1740
1741 ///////////////////////////////////////////////////////////////////////////////
1742 // DEBUGGER CHECK
1743 ///////////////////////////////////////////////////////////////////////////////
1744
1745 QString MUtils::OS::get_envvar(const QString &name)
1746 {
1747         wchar_t *buffer = NULL;
1748         size_t requiredSize = 0, buffSize = 0;
1749         QString result;
1750
1751         forever
1752         {
1753                 //Adjust the buffer size as required first!
1754                 if (buffSize < requiredSize)
1755                 {
1756                         if (buffer)
1757                         {
1758                                 _freea(buffer);
1759                         }
1760                         if (!(buffer = (wchar_t*)_malloca(sizeof(wchar_t) * requiredSize)))
1761                         {
1762                                 break; /*out of memory error!*/
1763                         }
1764                         buffSize = requiredSize;
1765                 }
1766
1767                 //Try to fetch the environment variable now
1768                 const errno_t error = _wgetenv_s(&requiredSize, buffer, buffSize, MUTILS_WCHR(name));
1769                 if(!error)
1770                 {
1771                         if (requiredSize > 0)
1772                         {
1773                                 result = MUTILS_QSTR(buffer);
1774                         }
1775                         break; /*done*/
1776                 }
1777                 else if (error != ERANGE)
1778                 {
1779                         break; /*somethging else went wrong!*/
1780                 }
1781         }
1782
1783         if (buffer)
1784         {
1785                 _freea(buffer);
1786                 buffSize = 0;
1787                 buffer = NULL;
1788         }
1789
1790         return result;
1791 }
1792
1793 bool MUtils::OS::set_envvar(const QString &name, const QString &value)
1794 {
1795         if (!_wputenv_s(MUTILS_WCHR(name), MUTILS_WCHR(value)))
1796         {
1797                 return true;
1798         }
1799         return false;
1800 }
1801
1802 ///////////////////////////////////////////////////////////////////////////////
1803 // NULL DEVICE
1804 ///////////////////////////////////////////////////////////////////////////////
1805
1806 static const QLatin1String NULL_DEVICE("NUL");
1807
1808 const QLatin1String &MUtils::OS::null_device(void)
1809 {
1810         return NULL_DEVICE;
1811 }
1812
1813 ///////////////////////////////////////////////////////////////////////////////
1814 // DEBUGGER CHECK
1815 ///////////////////////////////////////////////////////////////////////////////
1816
1817 #if (!(MUTILS_DEBUG))
1818 static __forceinline bool is_debugger_present(void)
1819 {
1820         __try
1821         {
1822                 CloseHandle((HANDLE)((DWORD_PTR)-3));
1823         }
1824         __except(1)
1825         {
1826                 return true;
1827         }
1828
1829         BOOL bHaveDebugger = FALSE;
1830         if(CheckRemoteDebuggerPresent(GetCurrentProcess(), &bHaveDebugger))
1831         {
1832                 if(bHaveDebugger) return true;
1833         }
1834
1835         return IsDebuggerPresent();
1836 }
1837 static __forceinline bool check_debugger_helper(void)
1838 {
1839         if(is_debugger_present())
1840         {
1841                 MUtils::OS::fatal_exit(L"Not a debug build. Please unload debugger and try again!");
1842                 return true;
1843         }
1844         return false;
1845 }
1846 #else
1847 #define check_debugger_helper() (false)
1848 #endif
1849
1850 void MUtils::OS::check_debugger(void)
1851 {
1852         check_debugger_helper();
1853 }
1854
1855 static volatile bool g_debug_check = check_debugger_helper();
1856
1857 ///////////////////////////////////////////////////////////////////////////////
1858 // FATAL EXIT
1859 ///////////////////////////////////////////////////////////////////////////////
1860
1861 static MUtils::Internal::CriticalSection g_fatal_exit_lock;
1862 static QAtomicInt g_fatal_exit_flag;
1863
1864 static DWORD WINAPI fatal_exit_helper(LPVOID lpParameter)
1865 {
1866         MUtils::OS::system_message_err(L"GURU MEDITATION", (LPWSTR) lpParameter);
1867         return 0;
1868 }
1869
1870 void MUtils::OS::fatal_exit(const wchar_t* const errorMessage)
1871 {
1872         g_fatal_exit_lock.enter();
1873
1874         if(!g_fatal_exit_flag.testAndSetOrdered(0, 1))
1875         {
1876                 return; /*prevent recursive invocation*/
1877         }
1878
1879         if(g_main_thread_id != GetCurrentThreadId())
1880         {
1881                 if(HANDLE hThreadMain = OpenThread(THREAD_SUSPEND_RESUME, FALSE, g_main_thread_id))
1882                 {
1883                         SuspendThread(hThreadMain); /*stop main thread*/
1884                 }
1885         }
1886
1887         if(HANDLE hThread = CreateThread(NULL, 0, fatal_exit_helper, (LPVOID)errorMessage, 0, NULL))
1888         {
1889                 WaitForSingleObject(hThread, INFINITE);
1890         }
1891         else
1892         {
1893                 fatal_exit_helper((LPVOID)errorMessage);
1894         }
1895
1896         for(;;)
1897         {
1898                 TerminateProcess(GetCurrentProcess(), 666);
1899         }
1900 }
1901
1902 ///////////////////////////////////////////////////////////////////////////////