src/OSSupport_Win32.cpp

   1 ///////////////////////////////////////////////////////////////////////////////
   2 // MuldeR's Utilities for Qt
   3 // Copyright (C) 2004-2019 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 "Internal.h"
  44 #include "CriticalSection_Win32.h"
  45 #include "Utils_Win32.h"
  46
  47 //Qt
  48 #include <QMap>
  49 #include <QReadWriteLock>
  50 #include <QDir>
  51 #include <QWidget>
  52 #include <QProcess>
  53 #include <QSet>
  54
  55 //Main thread ID
  56 static const DWORD g_main_thread_id = GetCurrentThreadId();
  57
  58 ///////////////////////////////////////////////////////////////////////////////
  59 // SYSTEM MESSAGE
  60 ///////////////////////////////////////////////////////////////////////////////
  61
  62 static const UINT g_msgBoxFlags = MB_TOPMOST | MB_TASKMODAL | MB_SETFOREGROUND;
  63
  64 void MUtils::OS::system_message_nfo(const wchar_t *const title, const wchar_t *const text)
  65 {
  66         MessageBoxW(NULL, text, title, g_msgBoxFlags | MB_ICONINFORMATION);
  67 }
  68
  69 void MUtils::OS::system_message_wrn(const wchar_t *const title, const wchar_t *const text)
  70 {
  71         MessageBoxW(NULL, text, title, g_msgBoxFlags | MB_ICONWARNING);
  72 }
  73
  74 void MUtils::OS::system_message_err(const wchar_t *const title, const wchar_t *const text)
  75 {
  76         MessageBoxW(NULL, text, title, g_msgBoxFlags | MB_ICONERROR);
  77 }
  78
  79 ///////////////////////////////////////////////////////////////////////////////
  80 // FETCH CLI ARGUMENTS
  81 ///////////////////////////////////////////////////////////////////////////////
  82
  83 static QReadWriteLock                          g_arguments_lock;
  84 static QScopedPointer<MUtils::OS::ArgumentMap> g_arguments_list;
  85
  86 const QStringList MUtils::OS::crack_command_line(const QString &command_line)
  87 {
  88         int nArgs = 0;
  89         LPWSTR *szArglist = CommandLineToArgvW(command_line.isNull() ? GetCommandLineW() : MUTILS_WCHR(command_line), &nArgs);
  90
  91         QStringList command_line_tokens;
  92         if(NULL != szArglist)
  93         {
  94                 for(int i = 0; i < nArgs; i++)
  95                 {
  96                         const QString argStr = MUTILS_QSTR(szArglist[i]).trimmed();
  97                         if(!argStr.isEmpty())
  98                         {
  99                                 command_line_tokens << argStr;
 100                         }
 101                 }
 102                 LocalFree(szArglist);
 103         }
 104
 105         return command_line_tokens;
 106 }
 107
 108 const MUtils::OS::ArgumentMap &MUtils::OS::arguments(void)
 109 {
 110         QReadLocker readLock(&g_arguments_lock);
 111
 112         //Already initialized?
 113         if(!g_arguments_list.isNull())
 114         {
 115                 return (*(g_arguments_list.data()));
 116         }
 117
 118         readLock.unlock();
 119         QWriteLocker writeLock(&g_arguments_lock);
 120
 121         //Still not initialized?
 122         if(!g_arguments_list.isNull())
 123         {
 124                 return (*(g_arguments_list.data()));
 125         }
 126
 127         g_arguments_list.reset(new ArgumentMap());
 128         const QStringList argList = crack_command_line();
 129
 130         if(!argList.isEmpty())
 131         {
 132                 const QString argPrefix = QLatin1String("--");
 133                 const QChar   separator = QLatin1Char('=');
 134
 135                 bool firstToken = true;
 136                 for(QStringList::ConstIterator iter = argList.constBegin(); iter != argList.constEnd(); iter++)
 137                 {
 138                         if(firstToken)
 139                         {
 140                                 firstToken = false;
 141                                 continue; /*skip executable file name*/
 142                         }
 143                         if(iter->startsWith(argPrefix))
 144                         {
 145                                 const QString argData = iter->mid(2).trimmed();
 146                                 if(argData.length() > 0)
 147                                 {
 148                                         const int separatorIndex = argData.indexOf(separator);
 149                                         if(separatorIndex > 0)
 150                                         {
 151                                                 const QString argKey = argData.left(separatorIndex).trimmed();
 152                                                 const QString argVal = argData.mid(separatorIndex + 1).trimmed();
 153                                                 g_arguments_list->insertMulti(argKey.toLower(), argVal);
 154                                         }
 155                                         else
 156                                         {
 157                                                 g_arguments_list->insertMulti(argData.toLower(), QString());
 158                                         }
 159                                 }
 160                         }
 161                 }
 162         }
 163         else if(argList.empty())
 164         {
 165                 qWarning("CommandLineToArgvW() has failed !!!");
 166         }
 167
 168         return (*(g_arguments_list.data()));
 169 }
 170
 171 ///////////////////////////////////////////////////////////////////////////////
 172 // COPY FILE
 173 ///////////////////////////////////////////////////////////////////////////////
 174
 175 typedef struct _progress_callback_data_t
 176 {
 177         MUtils::OS::progress_callback_t callback_function;
 178         void *user_data;
 179 }
 180 progress_callback_data_t;
 181
 182 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)
 183 {
 184         if(const progress_callback_data_t *data = (progress_callback_data_t*) lpData)
 185         {
 186                 const double progress = qBound(0.0, double(TotalBytesTransferred.QuadPart) / double(TotalFileSize.QuadPart), 1.0);
 187                 return data->callback_function(progress, data->user_data) ? PROGRESS_CONTINUE : PROGRESS_CANCEL;
 188         }
 189         return PROGRESS_CONTINUE;
 190 }
 191
 192 MUTILS_API bool MUtils::OS::copy_file(const QString &sourcePath, const QString &outputPath, const bool &overwrite, const progress_callback_t callback, void *const userData)
 193 {
 194         progress_callback_data_t callback_data = { callback, userData };
 195         BOOL cancel = FALSE;
 196         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));
 197
 198         if(result == FALSE)
 199         {
 200                 const DWORD errorCode = GetLastError();
 201                 if(errorCode != ERROR_REQUEST_ABORTED)
 202                 {
 203                         qWarning("CopyFile() failed with error code 0x%08X!", errorCode);
 204                 }
 205                 else
 206                 {
 207                         qWarning("CopyFile() operation was abroted by user!");
 208                 }
 209         }
 210
 211         return (result != FALSE);
 212 }
 213
 214 ///////////////////////////////////////////////////////////////////////////////
 215 // GET FILE VERSION
 216 ///////////////////////////////////////////////////////////////////////////////
 217
 218 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)
 219 {
 220         if(!GetFileVersionInfo(MUTILS_WCHR(fileName), 0, size, buffer))
 221         {
 222                 qWarning("GetFileVersionInfo() has failed, file version cannot be determined!");
 223                 return false;
 224         }
 225
 226         VS_FIXEDFILEINFO *verInfo;
 227         UINT verInfoLen;
 228         if(!VerQueryValue(buffer, L"\\", (LPVOID*)(&verInfo), &verInfoLen))
 229         {
 230                 qWarning("VerQueryValue() has failed, file version cannot be determined!");
 231                 return false;
 232         }
 233
 234         if(major) *major = quint16((verInfo->dwFileVersionMS >> 16) & 0x0000FFFF);
 235         if(minor) *minor = quint16((verInfo->dwFileVersionMS)       & 0x0000FFFF);
 236         if(patch) *patch = quint16((verInfo->dwFileVersionLS >> 16) & 0x0000FFFF);
 237         if(build) *build = quint16((verInfo->dwFileVersionLS)       & 0x0000FFFF);
 238
 239         return true;
 240 }
 241
 242 bool MUtils::OS::get_file_version(const QString fileName, quint16 *const major, quint16 *const minor, quint16 *const patch, quint16 *const build)
 243 {
 244         if(major) *major = 0U; if(minor) *minor = 0U;
 245         if(patch) *patch = 0U; if(build) *build = 0U;
 246
 247         const DWORD size = GetFileVersionInfoSize(MUTILS_WCHR(fileName), NULL);
 248         if(size < 1)
 249         {
 250                 qWarning("GetFileVersionInfoSize() has failed, file version cannot be determined!");
 251                 return false;
 252         }
 253
 254         PVOID buffer = _malloca(size);
 255         if(!buffer)
 256         {
 257                 qWarning("Memory allocation has failed!");
 258                 return false;
 259         }
 260
 261         const bool success = get_file_version_helper(fileName, buffer, size, major, minor, patch, build);
 262
 263         _freea(buffer);
 264         return success;
 265 }
 266
 267 ///////////////////////////////////////////////////////////////////////////////
 268 // OS VERSION DETECTION
 269 ///////////////////////////////////////////////////////////////////////////////
 270
 271 static bool g_os_version_initialized = false;
 272 static MUtils::OS::Version::os_version_t g_os_version_info = MUtils::OS::Version::UNKNOWN_OPSYS;
 273 static QReadWriteLock g_os_version_lock;
 274
 275 //Maps marketing names to the actual Windows NT versions
 276 static const struct
 277 {
 278         MUtils::OS::Version::os_version_t version;
 279         const char friendlyName[64];
 280 }
 281 g_os_version_lut[] =
 282 {
 283         { MUtils::OS::Version::WINDOWS_WIN2K, "Windows 2000"                                  },        //2000
 284         { MUtils::OS::Version::WINDOWS_WINXP, "Windows XP or Windows XP Media Center Edition" },        //XP
 285         { MUtils::OS::Version::WINDOWS_XPX64, "Windows Server 2003 or Windows XP x64"         },        //XP_x64
 286         { MUtils::OS::Version::WINDOWS_VISTA, "Windows Vista or Windows Server 2008"          },        //Vista
 287         { MUtils::OS::Version::WINDOWS_WIN70, "Windows 7 or Windows Server 2008 R2"           },        //7
 288         { MUtils::OS::Version::WINDOWS_WIN80, "Windows 8 or Windows Server 2012"              },        //8
 289         { MUtils::OS::Version::WINDOWS_WIN81, "Windows 8.1 or Windows Server 2012 R2"         },        //8.1
 290         { MUtils::OS::Version::WINDOWS_WN100, "Windows 10 or Windows Server 2016"             },        //10
 291         { MUtils::OS::Version::UNKNOWN_OPSYS, "N/A" }
 292 };
 293
 294 //OS version data dtructures
 295 namespace MUtils
 296 {
 297         namespace OS
 298         {
 299                 namespace Version
 300                 {
 301                         //Comparision operators for os_version_t
 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) || ((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                         bool os_version_t::operator<= (const os_version_t &rhs) const { return (type == rhs.type) && ((versionMajor < rhs.versionMajor) || ((versionMajor == rhs.versionMajor) && (versionMinor <= rhs.versionMinor))); }
 308
 309                         //Known Windows NT versions
 310                         const os_version_t WINDOWS_WIN2K = { OS_WINDOWS,  5, 0,  2195, 0 };     // 2000
 311                         const os_version_t WINDOWS_WINXP = { OS_WINDOWS,  5, 1,  2600, 0 };     // XP
 312                         const os_version_t WINDOWS_XPX64 = { OS_WINDOWS,  5, 2,  3790, 0 };     // XP_x64
 313                         const os_version_t WINDOWS_VISTA = { OS_WINDOWS,  6, 0,  6000, 0 };     // Vista
 314                         const os_version_t WINDOWS_WIN70 = { OS_WINDOWS,  6, 1,  7600, 0 };     // 7
 315                         const os_version_t WINDOWS_WIN80 = { OS_WINDOWS,  6, 2,  9200, 0 };     // 8
 316                         const os_version_t WINDOWS_WIN81 = { OS_WINDOWS,  6, 3,  9600, 0 };     // 8.1
 317                         const os_version_t WINDOWS_WN100 = { OS_WINDOWS, 10, 0, 10240, 0 };     // 10
 318
 319                         //Unknown OS
 320                         const os_version_t UNKNOWN_OPSYS = { OS_UNKNOWN, 0,  0,     0, 0 };     // N/A
 321                 }
 322         }
 323 }
 324
 325 static inline DWORD SAFE_ADD(const DWORD &a, const DWORD &b, const DWORD &limit = MAXDWORD)
 326 {
 327         return ((a >= limit) || (b >= limit) || ((limit - a) <= b)) ? limit : (a + b);
 328 }
 329
 330
 331 static void initialize_os_version(OSVERSIONINFOEXW *const osInfo)
 332 {
 333         memset(osInfo, 0, sizeof(OSVERSIONINFOEXW));
 334         osInfo->dwOSVersionInfoSize = sizeof(OSVERSIONINFOEXW);
 335 }
 336
 337 static inline DWORD initialize_step_size(const DWORD &limit)
 338 {
 339         DWORD result = 1;
 340         while (result < limit)
 341         {
 342                 result = SAFE_ADD(result, result);
 343         }
 344         return result;
 345 }
 346
 347 #pragma warning(push)
 348 #pragma warning(disable: 4996)
 349
 350 static bool rtl_get_version(OSVERSIONINFOEXW *const osInfo)
 351 {
 352         typedef LONG(__stdcall *RtlGetVersion)(LPOSVERSIONINFOEXW);
 353         if (const HMODULE ntdll = GetModuleHandleW(L"ntdll"))
 354         {
 355                 if (const RtlGetVersion pRtlGetVersion = (RtlGetVersion)GetProcAddress(ntdll, "RtlGetVersion"))
 356                 {
 357                         initialize_os_version(osInfo);
 358                         if (pRtlGetVersion(osInfo) == 0)
 359                         {
 360                                 return true;
 361                         }
 362                 }
 363         }
 364
 365         //Fallback
 366         initialize_os_version(osInfo);
 367         return (GetVersionExW((LPOSVERSIONINFOW)osInfo) != FALSE);
 368 }
 369
 370 #pragma warning(pop)
 371
 372 static bool rtl_verify_version(OSVERSIONINFOEXW *const osInfo, const ULONG typeMask, const ULONGLONG condMask)
 373 {
 374         typedef LONG(__stdcall *RtlVerifyVersionInfo)(LPOSVERSIONINFOEXW, ULONG, ULONGLONG);
 375         if (const HMODULE ntdll = GetModuleHandleW(L"ntdll"))
 376         {
 377                 if (const RtlVerifyVersionInfo pRtlVerifyVersionInfo = (RtlVerifyVersionInfo)GetProcAddress(ntdll, "RtlVerifyVersionInfo"))
 378                 {
 379                         if (pRtlVerifyVersionInfo(osInfo, typeMask, condMask) == 0)
 380                         {
 381                                 return true;
 382                         }
 383                 }
 384         }
 385
 386         //Fallback
 387         return (VerifyVersionInfoW(osInfo, typeMask, condMask) != FALSE);
 388 }
 389
 390 static bool verify_os_version(const DWORD major, const DWORD minor)
 391 {
 392         OSVERSIONINFOEXW osvi;
 393         DWORDLONG dwlConditionMask = 0;
 394         initialize_os_version(&osvi);
 395
 396         //Initialize the OSVERSIONINFOEX structure
 397         osvi.dwMajorVersion = major;
 398         osvi.dwMinorVersion = minor;
 399         osvi.dwPlatformId = VER_PLATFORM_WIN32_NT;
 400
 401         //Initialize the condition mask
 402         VER_SET_CONDITION(dwlConditionMask, VER_MAJORVERSION, VER_GREATER_EQUAL);
 403         VER_SET_CONDITION(dwlConditionMask, VER_MINORVERSION, VER_GREATER_EQUAL);
 404         VER_SET_CONDITION(dwlConditionMask, VER_PLATFORMID,   VER_EQUAL);
 405
 406         // Perform the test
 407         const BOOL ret = rtl_verify_version(&osvi, VER_MAJORVERSION | VER_MINORVERSION | VER_PLATFORMID, dwlConditionMask);
 408
 409         //Error checking
 410         if(!ret)
 411         {
 412                 if(GetLastError() != ERROR_OLD_WIN_VERSION)
 413                 {
 414                         qWarning("VerifyVersionInfo() system call has failed!");
 415                 }
 416         }
 417
 418         return (ret != FALSE);
 419 }
 420
 421 static bool verify_os_build(const DWORD build)
 422 {
 423         OSVERSIONINFOEXW osvi;
 424         DWORDLONG dwlConditionMask = 0;
 425         initialize_os_version(&osvi);
 426
 427         //Initialize the OSVERSIONINFOEX structure
 428         osvi.dwBuildNumber = build;
 429         osvi.dwPlatformId = VER_PLATFORM_WIN32_NT;
 430
 431         //Initialize the condition mask
 432         VER_SET_CONDITION(dwlConditionMask, VER_BUILDNUMBER, VER_GREATER_EQUAL);
 433         VER_SET_CONDITION(dwlConditionMask, VER_PLATFORMID, VER_EQUAL);
 434
 435         // Perform the test
 436         const BOOL ret = rtl_verify_version(&osvi, VER_BUILDNUMBER | VER_PLATFORMID, dwlConditionMask);
 437
 438         //Error checking
 439         if (!ret)
 440         {
 441                 if (GetLastError() != ERROR_OLD_WIN_VERSION)
 442                 {
 443                         qWarning("VerifyVersionInfo() system call has failed!");
 444                 }
 445         }
 446
 447         return (ret != FALSE);
 448 }
 449
 450 static bool verify_os_spack(const WORD spack)
 451 {
 452         OSVERSIONINFOEXW osvi;
 453         DWORDLONG dwlConditionMask = 0;
 454         initialize_os_version(&osvi);
 455
 456         //Initialize the OSVERSIONINFOEX structure
 457         osvi.wServicePackMajor = spack;
 458         osvi.dwPlatformId = VER_PLATFORM_WIN32_NT;
 459
 460         //Initialize the condition mask
 461         VER_SET_CONDITION(dwlConditionMask, VER_SERVICEPACKMAJOR, VER_GREATER_EQUAL);
 462         VER_SET_CONDITION(dwlConditionMask, VER_PLATFORMID, VER_EQUAL);
 463
 464         // Perform the test
 465         const BOOL ret = rtl_verify_version(&osvi, VER_SERVICEPACKMAJOR | VER_PLATFORMID, dwlConditionMask);
 466
 467         //Error checking
 468         if (!ret)
 469         {
 470                 if (GetLastError() != ERROR_OLD_WIN_VERSION)
 471                 {
 472                         qWarning("VerifyVersionInfo() system call has failed!");
 473                 }
 474         }
 475
 476         return (ret != FALSE);
 477 }
 478
 479 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)
 480 {
 481         static const DWORD MAX_VERSION = MAXWORD;
 482         static const DWORD MAX_BUILDNO = MAXINT;
 483         static const DWORD MAX_SRVCPCK = MAXWORD;
 484
 485         *major = *minor = *build = *spack = 0U;
 486         *pbOverride = false;
 487
 488         //Initialize local variables
 489         OSVERSIONINFOEXW osvi;
 490         memset(&osvi, 0, sizeof(OSVERSIONINFOEXW));
 491         osvi.dwOSVersionInfoSize = sizeof(OSVERSIONINFOEXW);
 492
 493         //Try GetVersionEx() first
 494         if(rtl_get_version(&osvi) == FALSE)
 495         {
 496                 qWarning("GetVersionEx() has failed, cannot detect Windows version!");
 497                 return false;
 498         }
 499
 500         //Make sure we are running on NT
 501         if(osvi.dwPlatformId == VER_PLATFORM_WIN32_NT)
 502         {
 503                 *major = osvi.dwMajorVersion;
 504                 *minor = osvi.dwMinorVersion;
 505                 *build = osvi.dwBuildNumber;
 506                 *spack = osvi.wServicePackMajor;
 507         }
 508         else
 509         {
 510                 if (verify_os_version(4, 0))
 511                 {
 512                         *major = 4;
 513                         *build = 1381;
 514                         *pbOverride = true;
 515                 }
 516                 else
 517                 {
 518                         qWarning("Not running on Windows NT, unsupported operating system!");
 519                         return false;
 520                 }
 521         }
 522
 523         //Major Version
 524         for (DWORD nextMajor = (*major) + 1; nextMajor <= MAX_VERSION; nextMajor++)
 525         {
 526                 if (verify_os_version(nextMajor, 0))
 527                 {
 528                         *major = nextMajor;
 529                         *minor = 0;
 530                         *pbOverride = true;
 531                         continue;
 532                 }
 533                 break;
 534         }
 535
 536         //Minor Version
 537         for (DWORD nextMinor = (*minor) + 1; nextMinor <= MAX_VERSION; nextMinor++)
 538         {
 539                 if (verify_os_version((*major), nextMinor))
 540                 {
 541                         *minor = nextMinor;
 542                         *pbOverride = true;
 543                         continue;
 544                 }
 545                 break;
 546         }
 547
 548         //Build Version
 549         if (verify_os_build(SAFE_ADD((*build), 1, MAX_BUILDNO)))
 550         {
 551                 DWORD stepSize = initialize_step_size(MAX_BUILDNO);
 552                 for (DWORD nextBuildNo = SAFE_ADD((*build), stepSize, MAX_BUILDNO); (*build) < MAX_BUILDNO; nextBuildNo = SAFE_ADD((*build), stepSize, MAX_BUILDNO))
 553                 {
 554                         if (verify_os_build(nextBuildNo))
 555                         {
 556                                 *build = nextBuildNo;
 557                                 *pbOverride = true;
 558                                 continue;
 559                         }
 560                         if (stepSize > 1)
 561                         {
 562                                 stepSize = stepSize / 2;
 563                                 continue;
 564                         }
 565                         break;
 566                 }
 567         }
 568
 569         //Service Pack
 570         if (verify_os_spack(SAFE_ADD((*spack), 1, MAX_SRVCPCK)))
 571         {
 572                 DWORD stepSize = initialize_step_size(MAX_SRVCPCK);
 573                 for (DWORD nextSPackNo = SAFE_ADD((*spack), stepSize, MAX_SRVCPCK); (*spack) < MAX_SRVCPCK; nextSPackNo = SAFE_ADD((*spack), stepSize, MAX_SRVCPCK))
 574                 {
 575                         if (verify_os_spack(nextSPackNo))
 576                         {
 577                                 *build = nextSPackNo;
 578                                 *pbOverride = true;
 579                                 continue;
 580                         }
 581                         if (stepSize > 1)
 582                         {
 583                                 stepSize = stepSize / 2;
 584                                 continue;
 585                         }
 586                         break;
 587                 }
 588         }
 589
 590         return true;
 591 }
 592
 593 const MUtils::OS::Version::os_version_t &MUtils::OS::os_version(void)
 594 {
 595         QReadLocker readLock(&g_os_version_lock);
 596
 597         //Already initialized?
 598         if(g_os_version_initialized)
 599         {
 600                 return g_os_version_info;
 601         }
 602
 603         readLock.unlock();
 604         QWriteLocker writeLock(&g_os_version_lock);
 605
 606         //Initialized now?
 607         if(g_os_version_initialized)
 608         {
 609                 return g_os_version_info;
 610         }
 611
 612         //Detect OS version
 613         unsigned int major, minor, build, spack; bool overrideFlg;
 614         if(get_real_os_version(&major, &minor, &build, &spack, &overrideFlg))
 615         {
 616                 g_os_version_info.type = Version::OS_WINDOWS;
 617                 g_os_version_info.versionMajor = major;
 618                 g_os_version_info.versionMinor = minor;
 619                 g_os_version_info.versionBuild = build;
 620                 g_os_version_info.versionSPack = spack;
 621                 g_os_version_info.overrideFlag = overrideFlg;
 622         }
 623         else
 624         {
 625                 qWarning("Failed to determine the operating system version!");
 626         }
 627
 628         //Completed
 629         g_os_version_initialized = true;
 630         return g_os_version_info;
 631 }
 632
 633 const char *MUtils::OS::os_friendly_name(const MUtils::OS::Version::os_version_t &os_version)
 634 {
 635         for(size_t i = 0; g_os_version_lut[i].version != MUtils::OS::Version::UNKNOWN_OPSYS; i++)
 636         {
 637                 if(os_version == g_os_version_lut[i].version)
 638                 {
 639                         return g_os_version_lut[i].friendlyName;
 640                 }
 641         }
 642
 643         return NULL;
 644 }
 645
 646 ///////////////////////////////////////////////////////////////////////////////
 647 // WINE DETECTION
 648 ///////////////////////////////////////////////////////////////////////////////
 649
 650 static bool g_wine_deteced = false;
 651 static bool g_wine_initialized = false;
 652 static QReadWriteLock g_wine_lock;
 653
 654 static const bool detect_wine(void)
 655 {
 656         void *const ptr = MUtils::Win32Utils::resolve<void*>(QLatin1String("ntdll"), QLatin1String("wine_get_version"));
 657         return (ptr != NULL);
 658 }
 659
 660 const bool &MUtils::OS::running_on_wine(void)
 661 {
 662         QReadLocker readLock(&g_wine_lock);
 663
 664         //Already initialized?
 665         if(g_wine_initialized)
 666         {
 667                 return g_wine_deteced;
 668         }
 669
 670         readLock.unlock();
 671         QWriteLocker writeLock(&g_wine_lock);
 672
 673         //Initialized now?
 674         if(g_wine_initialized)
 675         {
 676                 return g_wine_deteced;
 677         }
 678
 679         //Try to detect Wine
 680         g_wine_deteced = detect_wine();
 681         g_wine_initialized = true;
 682
 683         return g_wine_deteced;
 684 }
 685
 686 ///////////////////////////////////////////////////////////////////////////////
 687 // KNWON FOLDERS
 688 ///////////////////////////////////////////////////////////////////////////////
 689
 690 static QReadWriteLock                         g_known_folders_lock;
 691 static QScopedPointer<QHash<size_t, QString>> g_known_folders_data;
 692
 693 typedef HRESULT (WINAPI *SHGetKnownFolderPathProc)(const GUID &rfid, DWORD dwFlags, HANDLE hToken, PWSTR *ppszPath);
 694 typedef HRESULT (WINAPI *SHGetFolderPathProc)(HWND hwndOwner, int nFolder, HANDLE hToken, DWORD dwFlags, LPWSTR pszPath);
 695
 696 static const struct
 697 {
 698         MUtils::OS::known_folder_t id;
 699         INT32 csidl;
 700         GUID known_folder_id;
 701 }
 702 s_known_folders_lut[] =
 703 {
 704         { MUtils::OS::FOLDER_PROFILE_USER,  0x0028, { 0x5E6C858F, 0x0E22, 0x4760, { 0x9A, 0xFE, 0xEA, 0x33, 0x17, 0xB6, 0x71, 0x73 } } },  //CSIDL_PROFILE
 705         { MUtils::OS::FOLDER_PROFILE_PUBL,  0x0000, { 0xDFDF76A2, 0xC82A, 0x4D63, { 0x90, 0x6A, 0x56, 0x44, 0xAC, 0x45, 0x73, 0x85 } } },  //FOLDERID_Public
 706         { MUtils::OS::FOLDER_APPDATA_ROAM,  0x001A, { 0x3EB685DB, 0x65F9, 0x4CF6, { 0xA0, 0x3A, 0xE3, 0xEF, 0x65, 0x72, 0x9F, 0x3D } } },  //CSIDL_APPDATA
 707         { MUtils::OS::FOLDER_APPDATA_LOCA,  0x001C, { 0xF1B32785, 0x6FBA, 0x4FCF, { 0x9D, 0x55, 0x7B, 0x8E, 0x7F, 0x15, 0x70, 0x91 } } },  //CSIDL_LOCAL_APPDATA
 708         { MUtils::OS::FOLDER_DOCS_USER,     0x0005, { 0xFDD39AD0, 0x238F, 0x46AF, { 0xAD, 0xB4, 0x6C, 0x85, 0x48, 0x03, 0x69, 0xC7 } } },  //CSIDL_MYDOCUMENTS
 709         { MUtils::OS::FOLDER_DOCS_PUBL,     0x002E, { 0xED4824AF, 0xDCE4, 0x45A8, { 0x81, 0xE2, 0xFC, 0x79, 0x65, 0x08, 0x36, 0x34 } } },  //CSIDL_COMMON_DOCUMENTS
 710         { MUtils::OS::FOLDER_DESKTOP_USER,  0x0010, { 0xB4BFCC3A, 0xDB2C, 0x424C, { 0xB0, 0x29, 0x7F, 0xE9, 0x9A, 0x87, 0xC6, 0x41 } } },  //CSIDL_DESKTOPDIRECTORY
 711         { MUtils::OS::FOLDER_DESKTOP_PUBL,  0x0019, { 0xC4AA340D, 0xF20F, 0x4863, { 0xAF, 0xEF, 0xF8, 0x7E, 0xF2, 0xE6, 0xBA, 0x25 } } },  //CSIDL_COMMON_DESKTOPDIRECTORY
 712         { MUtils::OS::FOLDER_PICTURES_USER, 0x0027, { 0x33E28130, 0x4E1E, 0x4676, { 0x83, 0x5A, 0x98, 0x39, 0x5C, 0x3B, 0xC3, 0xBB } } },  //CSIDL_MYPICTURES
 713         { MUtils::OS::FOLDER_PICTURES_PUBL, 0x0036, { 0xB6EBFB86, 0x6907, 0x413C, { 0x9A, 0xF7, 0x4F, 0xC2, 0xAB, 0xF0, 0x7C, 0xC5 } } },  //CSIDL_COMMON_PICTURES
 714         { MUtils::OS::FOLDER_MUSIC_USER,    0x000D, { 0x4BD8D571, 0x6D19, 0x48D3, { 0xBE, 0x97, 0x42, 0x22, 0x20, 0x08, 0x0E, 0x43 } } },  //CSIDL_MYMUSIC
 715         { MUtils::OS::FOLDER_MUSIC_PUBL,    0x0035, { 0x3214FAB5, 0x9757, 0x4298, { 0xBB, 0x61, 0x92, 0xA9, 0xDE, 0xAA, 0x44, 0xFF } } },  //CSIDL_COMMON_MUSIC
 716         { MUtils::OS::FOLDER_VIDEO_USER,    0x000E, { 0x18989B1D, 0x99B5, 0x455B, { 0x84, 0x1C, 0xAB, 0x7C, 0x74, 0xE4, 0xDD, 0xFC } } },  //CSIDL_MYVIDEO
 717         { MUtils::OS::FOLDER_VIDEO_PUBL,    0x0037, { 0x2400183A, 0x6185, 0x49FB, { 0xA2, 0xD8, 0x4A, 0x39, 0x2A, 0x60, 0x2B, 0xA3 } } },  //CSIDL_COMMON_VIDEO
 718         { MUtils::OS::FOLDER_PROGRAMS_DEF,  0x0026, { 0x905E63B6, 0xC1BF, 0x494E, { 0xB2, 0x9C, 0x65, 0xB7, 0x32, 0xD3, 0xD2, 0x1A } } },  //CSIDL_PROGRAM_FILES
 719         { MUtils::OS::FOLDER_PROGRAMS_X86,  0x002A, { 0x7C5A40EF, 0xA0FB, 0x4BFC, { 0x87, 0x4A, 0xC0, 0xF2, 0xE0, 0xB9, 0xFA, 0x8E } } },  //CSIDL_PROGRAM_FILESX86
 720         { MUtils::OS::FOLDER_PROGRAMS_X64,  0x0000, { 0x6D809377, 0x6AF0, 0x444B, { 0x89, 0x57, 0xA3, 0x77, 0x3F, 0x02, 0x20, 0x0E } } },  //FOLDERID_ProgramFilesX64 (not supported for 32-bit applications)
 721         { MUtils::OS::FOLDER_SYSROOT,       0x0024, { 0xF38BF404, 0x1D43, 0x42F2, { 0x93, 0x05, 0x67, 0xDE, 0x0B, 0x28, 0xFC, 0x23 } } },  //CSIDL_WINDOWS
 722         { MUtils::OS::FOLDER_SYSTEM_DEF,    0x0025, { 0x1AC14E77, 0x02E7, 0x4E5D, { 0xB7, 0x44, 0x2E, 0xB1, 0xAE, 0x51, 0x98, 0xB7 } } },  //CSIDL_SYSTEM
 723         { MUtils::OS::FOLDER_SYSTEM_X86,    0x0029, { 0xD65231B0, 0xB2F1, 0x4857, { 0xA4, 0xCE, 0xA8, 0xE7, 0xC6, 0xEA, 0x7D, 0x27 } } },  //CSIDL_SYSTEMX86
 724         { static_cast<MUtils::OS::known_folder_t>(0) }
 725 };
 726
 727 static QString known_folder_verify(const wchar_t *const path)
 728 {
 729         const QDir folderPath = QDir(QDir::fromNativeSeparators(MUTILS_QSTR(path)));
 730         if (folderPath.exists())
 731         {
 732                 const QString absolutePath = folderPath.absolutePath();
 733                 const HANDLE handle = CreateFileW(MUTILS_WCHR(QDir::toNativeSeparators(absolutePath)), 0U, FILE_SHARE_READ | FILE_SHARE_WRITE, NULL, OPEN_EXISTING, FILE_FLAG_BACKUP_SEMANTICS, NULL);
 734                 if (handle != INVALID_HANDLE_VALUE)
 735                 {
 736                         SetHandleInformation(handle, HANDLE_FLAG_PROTECT_FROM_CLOSE, HANDLE_FLAG_PROTECT_FROM_CLOSE);
 737                         return absolutePath;
 738                 }
 739         }
 740
 741         return QString(); /*failed*/
 742 }
 743
 744 static QString known_folder_fallback(const size_t folderId)
 745 {
 746         static const DWORD s_shgfpTypes[3] =
 747         {
 748                 0, /*SHGFP_TYPE_CURRENT*/
 749                 1, /*SHGFP_TYPE_DEFAULT*/
 750                 MAXDWORD
 751         };
 752
 753         static const INT32 s_shgfpFlags[3] =
 754         {
 755                 0x0000, /*No extra flags*/
 756                 0x8000, /*SHGFP_FLAG_CREATE*/
 757                 MAXINT32
 758         };
 759
 760         if (s_known_folders_lut[folderId].csidl)
 761         {
 762                 const SHGetFolderPathProc getFolderPath = MUtils::Win32Utils::resolve<SHGetFolderPathProc>(QLatin1String("shell32"), QLatin1String("SHGetFolderPathW"));
 763                 if (getFolderPath)
 764                 {
 765                         QVector<WCHAR> pathBuffer(MAX_PATH);
 766                         for (size_t i = 0; s_shgfpTypes[i] != MAXDWORD; ++i)
 767                         {
 768                                 for (size_t j = 0; s_shgfpFlags[j] != MAXINT32; ++j)
 769                                 {
 770                                         if (getFolderPath(NULL, s_known_folders_lut[folderId].csidl | s_shgfpFlags[j], NULL, s_shgfpTypes[i], pathBuffer.data()) == S_OK)
 771                                         {
 772                                                 //MessageBoxW(0, pathBuffer.data(), L"SHGetFolderPathW", MB_TOPMOST);
 773                                                 const QString folderPath = known_folder_verify(pathBuffer.data());
 774                                                 if (!folderPath.isEmpty())
 775                                                 {
 776                                                         return folderPath;
 777                                                 }
 778                                         }
 779                                 }
 780                         }
 781                 }
 782         }
 783
 784         return QString(); /*failed!*/
 785 }
 786
 787 static QString known_folder_detect(const size_t folderId)
 788 {
 789         typedef enum
 790         {
 791                 KF_FLAG_DEFAULT      = 0x00000000,
 792                 KF_FLAG_DEFAULT_PATH = 0x00000400,
 793                 KF_FLAG_CREATE       = 0x00008000
 794         }
 795         kf_flag_t;
 796
 797         static const DWORD s_kfFlags[5] =
 798         {
 799                 KF_FLAG_DEFAULT,
 800                 KF_FLAG_CREATE,
 801                 KF_FLAG_DEFAULT_PATH,
 802                 KF_FLAG_DEFAULT_PATH | KF_FLAG_CREATE,
 803                 MAXDWORD
 804         };
 805
 806         const SHGetKnownFolderPathProc getKnownFolderPath = MUtils::Win32Utils::resolve<SHGetKnownFolderPathProc>(QLatin1String("shell32"), QLatin1String("SHGetKnownFolderPath"));
 807         if (getKnownFolderPath)
 808         {
 809                 for (size_t i = 0; s_kfFlags[i] != MAXDWORD; ++i)
 810                 {
 811                         WCHAR* path = NULL;
 812                         if (getKnownFolderPath(s_known_folders_lut[folderId].known_folder_id, s_kfFlags[i], NULL, &path) == S_OK)
 813                         {
 814                                 //MessageBoxW(0, path, L"SHGetKnownFolderPath", MB_TOPMOST);
 815                                 const QString folderPath = known_folder_verify(path);
 816                                 CoTaskMemFree(path);
 817                                 if (!folderPath.isEmpty())
 818                                 {
 819                                         return folderPath;
 820                                 }
 821                         }
 822                 }
 823         }
 824
 825         return known_folder_fallback(folderId); /*fallback!*/
 826 }
 827
 828 static size_t known_folder_decode(const MUtils::OS::known_folder_t folder_id)
 829 {
 830         for (size_t i = 0; s_known_folders_lut[i].id; ++i)
 831         {
 832                 if (s_known_folders_lut[i].id == folder_id)
 833                 {
 834                         return i;
 835                 }
 836         }
 837         qWarning("Invalid 'known' folder was requested!");
 838         return SIZE_MAX;
 839 }
 840
 841 const QString &MUtils::OS::known_folder(const known_folder_t folder_id)
 842 {
 843         //Map to numeric id
 844         const size_t folderId = known_folder_decode(folder_id);
 845         if (folderId == SIZE_MAX)
 846         {
 847                 return Internal::g_empty;
 848         }
 849
 850         //Obtain read lock
 851         QReadLocker readLock(&g_known_folders_lock);
 852
 853         //Already in cache?
 854         if(!g_known_folders_data.isNull())
 855         {
 856                 if(g_known_folders_data->contains(folderId))
 857                 {
 858                         return (*g_known_folders_data)[folderId];
 859                 }
 860         }
 861
 862         //Obtain write lock to initialize
 863         readLock.unlock();
 864         QWriteLocker writeLock(&g_known_folders_lock);
 865
 866         //Still not in cache?
 867         if(!g_known_folders_data.isNull())
 868         {
 869                 if(g_known_folders_data->contains(folderId))
 870                 {
 871                         return (*g_known_folders_data)[folderId];
 872                 }
 873         }
 874
 875         //Initialize on first call
 876         if(g_known_folders_data.isNull())
 877         {
 878                 g_known_folders_data.reset(new QHash<size_t, QString>());
 879         }
 880
 881         //Detect path now!
 882         const QString folderPath = known_folder_detect(folderId);
 883
 884         //Update cache
 885         if (!folderPath.isEmpty())
 886         {
 887                 g_known_folders_data->insert(folderId, folderPath);
 888                 return (*g_known_folders_data)[folderId];
 889         }
 890
 891         return Internal::g_empty;
 892 }
 893
 894 ///////////////////////////////////////////////////////////////////////////////
 895 // CURRENT DATA & TIME
 896 ///////////////////////////////////////////////////////////////////////////////
 897
 898 QDate MUtils::OS::current_date(void)
 899 {
 900         const DWORD MAX_PROC = 1024;
 901         QScopedArrayPointer<DWORD> processes(new DWORD[MAX_PROC]);
 902         DWORD bytesReturned = 0;
 903
 904         if(!EnumProcesses(processes.data(), sizeof(DWORD) * MAX_PROC, &bytesReturned))
 905         {
 906                 return QDate::currentDate();
 907         }
 908
 909         const DWORD procCount = bytesReturned / sizeof(DWORD);
 910         ULARGE_INTEGER lastStartTime;
 911         memset(&lastStartTime, 0, sizeof(ULARGE_INTEGER));
 912
 913         for(DWORD i = 0; i < procCount; i++)
 914         {
 915                 if(HANDLE hProc = OpenProcess(PROCESS_QUERY_INFORMATION, FALSE, processes[i]))
 916                 {
 917                         FILETIME processTime[4];
 918                         if(GetProcessTimes(hProc, &processTime[0], &processTime[1], &processTime[2], &processTime[3]))
 919                         {
 920                                 ULARGE_INTEGER timeCreation;
 921                                 timeCreation.LowPart  = processTime[0].dwLowDateTime;
 922                                 timeCreation.HighPart = processTime[0].dwHighDateTime;
 923                                 if(timeCreation.QuadPart > lastStartTime.QuadPart)
 924                                 {
 925                                         lastStartTime.QuadPart = timeCreation.QuadPart;
 926                                 }
 927                         }
 928                         CloseHandle(hProc);
 929                 }
 930         }
 931
 932         FILETIME lastStartTime_fileTime;
 933         lastStartTime_fileTime.dwHighDateTime = lastStartTime.HighPart;
 934         lastStartTime_fileTime.dwLowDateTime  = lastStartTime.LowPart;
 935
 936         FILETIME lastStartTime_localTime;
 937         if(!FileTimeToLocalFileTime(&lastStartTime_fileTime, &lastStartTime_localTime))
 938         {
 939                 memcpy(&lastStartTime_localTime, &lastStartTime_fileTime, sizeof(FILETIME));
 940         }
 941
 942         SYSTEMTIME lastStartTime_system;
 943         if(!FileTimeToSystemTime(&lastStartTime_localTime, &lastStartTime_system))
 944         {
 945                 memset(&lastStartTime_system, 0, sizeof(SYSTEMTIME));
 946                 lastStartTime_system.wYear = 1970; lastStartTime_system.wMonth = lastStartTime_system.wDay = 1;
 947         }
 948
 949         const QDate currentDate = QDate::currentDate();
 950         const QDate processDate = QDate(lastStartTime_system.wYear, lastStartTime_system.wMonth, lastStartTime_system.wDay);
 951         return (currentDate >= processDate) ? currentDate : processDate;
 952 }
 953
 954 quint64 MUtils::OS::current_file_time(void)
 955 {
 956         FILETIME fileTime;
 957         GetSystemTimeAsFileTime(&fileTime);
 958
 959         ULARGE_INTEGER temp;
 960         temp.HighPart = fileTime.dwHighDateTime;
 961         temp.LowPart = fileTime.dwLowDateTime;
 962
 963         return temp.QuadPart;
 964 }
 965
 966 ///////////////////////////////////////////////////////////////////////////////
 967 // FILE PATH FROM FD
 968 ///////////////////////////////////////////////////////////////////////////////
 969
 970 typedef DWORD(_stdcall *GetPathNameByHandleFun)(HANDLE hFile, LPWSTR lpszFilePath, DWORD cchFilePath, DWORD dwFlags);
 971
 972 static QString get_file_path_drive_list(void)
 973 {
 974         QString list;
 975         const DWORD len = GetLogicalDriveStringsW(0, NULL);
 976         if (len > 0)
 977         {
 978                 if (wchar_t *const buffer = (wchar_t*) _malloca(sizeof(wchar_t) * len))
 979                 {
 980                         const DWORD ret = GetLogicalDriveStringsW(len, buffer);
 981                         if ((ret > 0) && (ret < len))
 982                         {
 983                                 const wchar_t *ptr = buffer;
 984                                 while (const size_t current_len = wcslen(ptr))
 985                                 {
 986                                         list.append(QChar(*reinterpret_cast<const ushort*>(ptr)));
 987                                         ptr += (current_len + 1);
 988                                 }
 989                         }
 990                         _freea(buffer);
 991                 }
 992         }
 993         return list;
 994 }
 995
 996 static void get_file_path_translate(QString &path)
 997 {
 998         static const DWORD BUFSIZE = 2048;
 999         wchar_t buffer[BUFSIZE], drive[3];
1000
1001         const QString driveList = get_file_path_drive_list();
1002         wcscpy_s(drive, 3, L"?:");
1003         for (const wchar_t *current = MUTILS_WCHR(driveList); *current; current++)
1004         {
1005                 drive[0] = (*current);
1006                 if (QueryDosDeviceW(drive, buffer, MAX_PATH))
1007                 {
1008                         const QString prefix = MUTILS_QSTR(buffer);
1009                         if (path.startsWith(prefix, Qt::CaseInsensitive))
1010                         {
1011                                 path.remove(0, prefix.length()).prepend(QLatin1Char(':')).prepend(QChar(*reinterpret_cast<const ushort*>(current)));
1012                                 break;
1013                         }
1014                 }
1015         }
1016 }
1017
1018 static QString get_file_path_fallback(const HANDLE &hFile)
1019 {
1020         QString filePath;
1021
1022         const HANDLE hFileMap = CreateFileMappingW(hFile, NULL, PAGE_READONLY, 0, 1, NULL);
1023         if (hFileMap)
1024         {
1025                 void *const pMem = MapViewOfFile(hFileMap, FILE_MAP_READ, 0, 0, 1);
1026                 if (pMem)
1027                 {
1028                         static const size_t BUFFSIZE = 2048;
1029                         wchar_t buffer[BUFFSIZE];
1030                         if (GetMappedFileNameW(GetCurrentProcess(), pMem, buffer, BUFFSIZE) > 0)
1031                         {
1032                                 filePath = MUTILS_QSTR(buffer);
1033                         }
1034                         UnmapViewOfFile(pMem);
1035                 }
1036                 CloseHandle(hFileMap);
1037         }
1038
1039         if (!filePath.isEmpty())
1040         {
1041                 get_file_path_translate(filePath);
1042         }
1043
1044         return filePath;
1045 }
1046
1047 QString MUtils::OS::get_file_path(const int &fd)
1048 {
1049         if (fd >= 0)
1050         {
1051                 const GetPathNameByHandleFun getPathNameByHandleFun = MUtils::Win32Utils::resolve<GetPathNameByHandleFun>(QLatin1String("kernel32"), QLatin1String("GetFinalPathNameByHandleW"));
1052                 if (!getPathNameByHandleFun)
1053                 {
1054                         return get_file_path_fallback((HANDLE)_get_osfhandle(fd));
1055                 }
1056
1057                 const HANDLE handle = (HANDLE) _get_osfhandle(fd);
1058                 const DWORD len = getPathNameByHandleFun(handle, NULL, 0, FILE_NAME_OPENED);
1059                 if (len > 0)
1060                 {
1061                         if (wchar_t *const buffer = (wchar_t*)_malloca(sizeof(wchar_t) * len))
1062                         {
1063                                 const DWORD ret = getPathNameByHandleFun(handle, buffer, len, FILE_NAME_OPENED);
1064                                 if ((ret > 0) && (ret < len))
1065                                 {
1066                                         const QString path(MUTILS_QSTR(buffer));
1067                                         return path.startsWith(QLatin1String("\\\\?\\")) ? path.mid(4) : path;
1068                                 }
1069                                 _freea(buffer);
1070                         }
1071                 }
1072         }
1073
1074         return QString();
1075 }
1076
1077 ///////////////////////////////////////////////////////////////////////////////
1078 // PROCESS ELEVATION
1079 ///////////////////////////////////////////////////////////////////////////////
1080
1081 static bool user_is_admin_helper(void)
1082 {
1083         HANDLE hToken = NULL;
1084         if(!OpenProcessToken(GetCurrentProcess(), TOKEN_QUERY, &hToken))
1085         {
1086                 return false;
1087         }
1088
1089         DWORD dwSize = 0;
1090         if(!GetTokenInformation(hToken, TokenGroups, NULL, 0, &dwSize))
1091         {
1092                 if(GetLastError() != ERROR_INSUFFICIENT_BUFFER)
1093                 {
1094                         CloseHandle(hToken);
1095                         return false;
1096                 }
1097         }
1098
1099         PTOKEN_GROUPS lpGroups = (PTOKEN_GROUPS) malloc(dwSize);
1100         if(!lpGroups)
1101         {
1102                 CloseHandle(hToken);
1103                 return false;
1104         }
1105
1106         if(!GetTokenInformation(hToken, TokenGroups, lpGroups, dwSize, &dwSize))
1107         {
1108                 free(lpGroups);
1109                 CloseHandle(hToken);
1110                 return false;
1111         }
1112
1113         PSID lpSid = NULL; SID_IDENTIFIER_AUTHORITY Authority = {SECURITY_NT_AUTHORITY};
1114         if(!AllocateAndInitializeSid(&Authority, 2, SECURITY_BUILTIN_DOMAIN_RID, DOMAIN_ALIAS_RID_ADMINS, 0, 0, 0, 0, 0, 0, &lpSid))
1115         {
1116                 free(lpGroups);
1117                 CloseHandle(hToken);
1118                 return false;
1119         }
1120
1121         bool bResult = false;
1122         for(DWORD i = 0; i < lpGroups->GroupCount; i++)
1123         {
1124                 if(EqualSid(lpSid, lpGroups->Groups[i].Sid))
1125                 {
1126                         bResult = true;
1127                         break;
1128                 }
1129         }
1130
1131         FreeSid(lpSid);
1132         free(lpGroups);
1133         CloseHandle(hToken);
1134         return bResult;
1135 }
1136
1137 bool MUtils::OS::is_elevated(bool *bIsUacEnabled)
1138 {
1139         if(bIsUacEnabled)
1140         {
1141                 *bIsUacEnabled = false;
1142         }
1143
1144         bool bIsProcessElevated = false;
1145         HANDLE hToken = NULL;
1146
1147         if(OpenProcessToken(GetCurrentProcess(), TOKEN_QUERY, &hToken))
1148         {
1149                 TOKEN_ELEVATION_TYPE tokenElevationType;
1150                 DWORD returnLength;
1151                 if(GetTokenInformation(hToken, TokenElevationType, &tokenElevationType, sizeof(TOKEN_ELEVATION_TYPE), &returnLength))
1152                 {
1153                         if(returnLength == sizeof(TOKEN_ELEVATION_TYPE))
1154                         {
1155                                 switch(tokenElevationType)
1156                                 {
1157                                 case TokenElevationTypeDefault:
1158                                         qDebug("Process token elevation type: Default -> UAC is disabled.\n");
1159                                         break;
1160                                 case TokenElevationTypeFull:
1161                                         qWarning("Process token elevation type: Full -> potential security risk!\n");
1162                                         bIsProcessElevated = true;
1163                                         if(bIsUacEnabled) *bIsUacEnabled = true;
1164                                         break;
1165                                 case TokenElevationTypeLimited:
1166                                         qDebug("Process token elevation type: Limited -> not elevated.\n");
1167                                         if(bIsUacEnabled) *bIsUacEnabled = true;
1168                                         break;
1169                                 default:
1170                                         qWarning("Unknown tokenElevationType value: %d", tokenElevationType);
1171                                         break;
1172                                 }
1173                         }
1174                         else
1175                         {
1176                                 qWarning("GetTokenInformation() return an unexpected size!");
1177                         }
1178                 }
1179                 CloseHandle(hToken);
1180         }
1181         else
1182         {
1183                 qWarning("Failed to open process token!");
1184         }
1185
1186         return bIsProcessElevated;
1187 }
1188
1189 bool MUtils::OS::user_is_admin(void)
1190 {
1191         bool isAdmin = false;
1192
1193         //Check for process elevation and UAC support first!
1194         if(MUtils::OS::is_elevated(&isAdmin))
1195         {
1196                 qWarning("Process is elevated -> user is admin!");
1197                 return true;
1198         }
1199
1200         //If not elevated and UAC is not available -> user must be in admin group!
1201         if(!isAdmin)
1202         {
1203                 qDebug("UAC is disabled/unavailable -> checking for Administrators group");
1204                 isAdmin = user_is_admin_helper();
1205         }
1206
1207         return isAdmin;
1208 }
1209
1210 ///////////////////////////////////////////////////////////////////////////////
1211 // NETWORK STATE
1212 ///////////////////////////////////////////////////////////////////////////////
1213
1214 int MUtils::OS::network_status(void)
1215 {
1216         DWORD dwFlags;
1217         const BOOL ret = IsNetworkAlive(&dwFlags);
1218         if(GetLastError() == 0)
1219         {
1220                 return (ret != FALSE) ? NETWORK_TYPE_YES : NETWORK_TYPE_NON;
1221         }
1222         return NETWORK_TYPE_ERR;
1223 }
1224
1225 ///////////////////////////////////////////////////////////////////////////////
1226 // MESSAGE HANDLER
1227 ///////////////////////////////////////////////////////////////////////////////
1228
1229 bool MUtils::OS::handle_os_message(const void *const message, long *result)
1230 {
1231         const MSG *const msg = reinterpret_cast<const MSG*>(message);
1232
1233         switch(msg->message)
1234         {
1235         case WM_QUERYENDSESSION:
1236                 qWarning("WM_QUERYENDSESSION message received!");
1237                 *result = MUtils::GUI::broadcast(MUtils::GUI::USER_EVENT_QUERYENDSESSION, false) ? TRUE : FALSE;
1238                 return true;
1239         case WM_ENDSESSION:
1240                 qWarning("WM_ENDSESSION message received!");
1241                 if(msg->wParam == TRUE)
1242                 {
1243                         MUtils::GUI::broadcast(MUtils::GUI::USER_EVENT_ENDSESSION, false);
1244                         MUtils::GUI::force_quit();
1245                         exit(1);
1246                 }
1247                 *result = 0;
1248                 return true;
1249         default:
1250                 /*ignore this message and let Qt handle it*/
1251                 return false;
1252         }
1253 }
1254
1255 ///////////////////////////////////////////////////////////////////////////////
1256 // SLEEP
1257 ///////////////////////////////////////////////////////////////////////////////
1258
1259 void MUtils::OS::sleep_ms(const size_t &duration)
1260 {
1261         Sleep((DWORD) duration);
1262 }
1263
1264 ///////////////////////////////////////////////////////////////////////////////
1265 // EXECUTABLE CHECK
1266 ///////////////////////////////////////////////////////////////////////////////
1267
1268 static int g_library_as_image_resource_supported = -1;
1269 static QReadWriteLock g_library_as_image_resource_supported_lock;
1270
1271 static bool library_as_image_resource_supported()
1272 {
1273         QReadLocker readLocker(&g_library_as_image_resource_supported_lock);
1274         if (g_library_as_image_resource_supported >= 0)
1275         {
1276                 return (g_library_as_image_resource_supported > 0);
1277         }
1278
1279         readLocker.unlock();
1280         QWriteLocker writeLocker(&g_library_as_image_resource_supported_lock);
1281
1282         if (g_library_as_image_resource_supported < 0)
1283         {
1284                 g_library_as_image_resource_supported = 0;
1285                 OSVERSIONINFOEXW osvi;
1286                 if (rtl_get_version(&osvi))
1287                 {
1288                         if ((osvi.dwPlatformId == VER_PLATFORM_WIN32_NT) && (osvi.dwMajorVersion >= 6U))
1289                         {
1290                                 g_library_as_image_resource_supported = 1;
1291                         }
1292                 }
1293         }
1294
1295         return (g_library_as_image_resource_supported > 0);
1296 }
1297
1298 bool MUtils::OS::is_executable_file(const QString &path)
1299 {
1300         DWORD binaryType;
1301         if(GetBinaryType(MUTILS_WCHR(QDir::toNativeSeparators(path)), &binaryType))
1302         {
1303                 return ((binaryType == SCS_32BIT_BINARY) || (binaryType == SCS_64BIT_BINARY));
1304         }
1305
1306         const DWORD errorCode = GetLastError();
1307         qWarning("GetBinaryType() failed with error: 0x%08X", errorCode);
1308         return false;
1309 }
1310
1311 bool MUtils::OS::is_library_file(const QString &path)
1312 {
1313         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);
1314         if (const HMODULE hMod = LoadLibraryEx(MUTILS_WCHR(QDir::toNativeSeparators(path)), NULL, flags))
1315         {
1316                 FreeLibrary(hMod);
1317                 return true;
1318         }
1319
1320         const DWORD errorCode = GetLastError();
1321         qWarning("LoadLibraryEx() failed with error: 0x%08X", errorCode);
1322         return false;
1323 }
1324
1325 ///////////////////////////////////////////////////////////////////////////////
1326 // HIBERNATION / SHUTDOWN
1327 ///////////////////////////////////////////////////////////////////////////////
1328
1329 bool MUtils::OS::is_hibernation_supported(void)
1330 {
1331         bool hibernationSupported = false;
1332
1333         SYSTEM_POWER_CAPABILITIES pwrCaps;
1334         SecureZeroMemory(&pwrCaps, sizeof(SYSTEM_POWER_CAPABILITIES));
1335
1336         if(GetPwrCapabilities(&pwrCaps))
1337         {
1338                 hibernationSupported = pwrCaps.SystemS4 && pwrCaps.HiberFilePresent;
1339         }
1340
1341         return hibernationSupported;
1342 }
1343
1344 bool MUtils::OS::shutdown_computer(const QString &message, const unsigned long timeout, const bool forceShutdown, const bool hibernate)
1345 {
1346         HANDLE hToken = NULL;
1347
1348         if(OpenProcessToken(GetCurrentProcess(), TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken))
1349         {
1350                 TOKEN_PRIVILEGES privileges;
1351                 memset(&privileges, 0, sizeof(TOKEN_PRIVILEGES));
1352                 privileges.PrivilegeCount = 1;
1353                 privileges.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
1354
1355                 if(LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME, &privileges.Privileges[0].Luid))
1356                 {
1357                         if(AdjustTokenPrivileges(hToken, FALSE, &privileges, NULL, NULL, NULL))
1358                         {
1359                                 if(hibernate)
1360                                 {
1361                                         if(SetSuspendState(TRUE, TRUE, TRUE))
1362                                         {
1363                                                 return true;
1364                                         }
1365                                 }
1366                                 const DWORD reason = SHTDN_REASON_MAJOR_APPLICATION | SHTDN_REASON_FLAG_PLANNED;
1367                                 return InitiateSystemShutdownEx(NULL, const_cast<wchar_t*>(MUTILS_WCHR(message)), timeout, forceShutdown ? TRUE : FALSE, FALSE, reason);
1368                         }
1369                 }
1370         }
1371
1372         return false;
1373 }
1374
1375 ///////////////////////////////////////////////////////////////////////////////
1376 // FREE DISKSPACE
1377 ///////////////////////////////////////////////////////////////////////////////
1378
1379 bool MUtils::OS::free_diskspace(const QString &path, quint64 &freeSpace)
1380 {
1381         ULARGE_INTEGER freeBytesAvailable, totalNumberOfBytes, totalNumberOfFreeBytes;
1382         if(GetDiskFreeSpaceExW(reinterpret_cast<const wchar_t*>(QDir::toNativeSeparators(path).utf16()), &freeBytesAvailable, &totalNumberOfBytes, &totalNumberOfFreeBytes))
1383         {
1384                 freeSpace = freeBytesAvailable.QuadPart;
1385                 return true;;
1386         }
1387
1388         freeSpace = -1;
1389         return false;
1390 }
1391
1392 ///////////////////////////////////////////////////////////////////////////////
1393 // DRIVE TYPE
1394 ///////////////////////////////////////////////////////////////////////////////
1395
1396 static wchar_t get_drive_letter(const QString &path)
1397 {
1398         QString nativePath = QDir::toNativeSeparators(path);
1399         while (nativePath.startsWith("\\\\?\\") || nativePath.startsWith("\\\\.\\"))
1400         {
1401                 nativePath = QDir::toNativeSeparators(nativePath.mid(4));
1402         }
1403         if ((path.length() > 1) && (path[1] == QLatin1Char(':')))
1404         {
1405                 const wchar_t letter = static_cast<wchar_t>(path[0].unicode());
1406                 if (((letter >= 'A') && (letter <= 'Z')) || ((letter >= 'a') && (letter <= 'z')))
1407                 {
1408                         return towupper(letter);
1409                 }
1410         }
1411         return L'\0'; /*invalid path spec*/
1412 }
1413
1414 static QSet<DWORD> get_physical_drive_ids(const wchar_t drive_letter)
1415 {
1416         QSet<DWORD> physical_drives;
1417         wchar_t driveName[8];
1418         _snwprintf_s(driveName, 8, _TRUNCATE, L"\\\\.\\%c:", drive_letter);
1419         const HANDLE hDrive = CreateFileW(driveName, 0, FILE_SHARE_READ | FILE_SHARE_WRITE, NULL, OPEN_EXISTING, 0, NULL);
1420         if (hDrive && (hDrive != INVALID_HANDLE_VALUE))
1421         {
1422                 const size_t BUFF_SIZE = sizeof(VOLUME_DISK_EXTENTS) + (32U * sizeof(DISK_EXTENT));
1423                 VOLUME_DISK_EXTENTS *const diskExtents = (VOLUME_DISK_EXTENTS*)_malloca(BUFF_SIZE);
1424                 DWORD dwSize;
1425                 if (DeviceIoControl(hDrive, IOCTL_VOLUME_GET_VOLUME_DISK_EXTENTS, NULL, 0, (LPVOID)diskExtents, (DWORD)BUFF_SIZE, (LPDWORD)&dwSize, NULL))
1426                 {
1427                         for (DWORD index = 0U; index < diskExtents->NumberOfDiskExtents; ++index)
1428                         {
1429                                 physical_drives.insert(diskExtents->Extents[index].DiskNumber);
1430                         }
1431                 }
1432                 _freea(diskExtents);
1433                 CloseHandle(hDrive);
1434         }
1435         return physical_drives;
1436 }
1437
1438 static bool incurs_seek_penalty(const DWORD device_id)
1439 {
1440         wchar_t driveName[24];
1441         _snwprintf_s(driveName, 24, _TRUNCATE, L"\\\\?\\PhysicalDrive%u", device_id);
1442         const HANDLE hDevice = CreateFileW(driveName, 0, FILE_SHARE_READ | FILE_SHARE_WRITE, NULL, OPEN_EXISTING, 0, NULL);
1443         bool seeking_penalty = true;
1444         if (hDevice && (hDevice != INVALID_HANDLE_VALUE))
1445         {
1446                 STORAGE_PROPERTY_QUERY spq;
1447                 DEVICE_SEEK_PENALTY_DESCRIPTOR dspd;
1448                 memset(&spq, 0, sizeof(STORAGE_PROPERTY_QUERY));
1449                 spq.PropertyId = (STORAGE_PROPERTY_ID)StorageDeviceSeekPenaltyProperty;
1450                 spq.QueryType = PropertyStandardQuery;
1451                 DWORD dwSize;
1452                 if (DeviceIoControl(hDevice, IOCTL_STORAGE_QUERY_PROPERTY, (LPVOID)&spq, (DWORD)sizeof(spq), (LPVOID)&dspd, (DWORD)sizeof(dspd), (LPDWORD)&dwSize, NULL))
1453                 {
1454                         seeking_penalty = dspd.IncursSeekPenalty;
1455                 }
1456                 CloseHandle(hDevice);
1457         }
1458         return seeking_penalty;
1459 }
1460
1461 static bool is_fast_seeking_drive(const wchar_t drive_letter)
1462 {
1463         bool fast_seeking = false;
1464         const QSet<DWORD> physical_drive_ids = get_physical_drive_ids(drive_letter);
1465         if (!physical_drive_ids.empty())
1466         {
1467                 fast_seeking = true;
1468                 for (QSet<DWORD>::const_iterator iter = physical_drive_ids.constBegin(); iter != physical_drive_ids.constEnd(); ++iter)
1469                 {
1470                         fast_seeking = fast_seeking && (!incurs_seek_penalty(*iter));
1471                 }
1472         }
1473         return fast_seeking;
1474 }
1475
1476 MUtils::OS::drive_type_t MUtils::OS::get_drive_type(const QString &path, bool *fast_seeking)
1477 {
1478         drive_type_t driveType = DRIVE_TYPE_ERR;
1479         const wchar_t driveLetter = get_drive_letter(path);
1480         if (driveLetter)
1481         {
1482                 wchar_t driveName[8];
1483                 _snwprintf_s(driveName, 8, _TRUNCATE, L"\\\\.\\%c:\\", driveLetter);
1484                 switch (GetDriveTypeW(driveName))
1485                 {
1486                         case DRIVE_REMOVABLE: driveType = DRIVE_TYPE_FDD; break;
1487                         case DRIVE_FIXED:     driveType = DRIVE_TYPE_HDD; break;
1488                         case DRIVE_REMOTE:    driveType = DRIVE_TYPE_NET; break;
1489                         case DRIVE_CDROM:     driveType = DRIVE_TYPE_OPT; break;
1490                         case DRIVE_RAMDISK:   driveType = DRIVE_TYPE_RAM; break;
1491                 }
1492         }
1493         if (fast_seeking)
1494         {
1495                 if (driveType == DRIVE_TYPE_HDD)
1496                 {
1497                         *fast_seeking = is_fast_seeking_drive(driveLetter);
1498                 }
1499                 else
1500                 {
1501                         *fast_seeking = (driveType == DRIVE_TYPE_RAM);
1502                 }
1503         }
1504         return driveType;
1505 }
1506
1507 ///////////////////////////////////////////////////////////////////////////////
1508 // SHELL OPEN
1509 ///////////////////////////////////////////////////////////////////////////////
1510
1511 bool MUtils::OS::shell_open(const QWidget *parent, const QString &url, const QString &parameters, const QString &directory, const bool explore)
1512 {
1513         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;
1514 }
1515
1516 bool MUtils::OS::shell_open(const QWidget *parent, const QString &url, const bool explore)
1517 {
1518         return shell_open(parent, url, QString(), QString(), explore);
1519 }
1520
1521 ///////////////////////////////////////////////////////////////////////////////
1522 // OPEN MEDIA FILE
1523 ///////////////////////////////////////////////////////////////////////////////
1524
1525 bool MUtils::OS::open_media_file(const QString &mediaFilePath)
1526 {
1527         const static wchar_t *registryPrefix[2] = { L"SOFTWARE\\", L"SOFTWARE\\Wow6432Node\\" };
1528         const static wchar_t *registryKeys[3] =
1529         {
1530                 L"Microsoft\\Windows\\CurrentVersion\\Uninstall\\{97D341C8-B0D1-4E4A-A49A-C30B52F168E9}",
1531                 L"Microsoft\\Windows\\CurrentVersion\\Uninstall\\{DB9E4EAB-2717-499F-8D56-4CC8A644AB60}",
1532                 L"foobar2000"
1533         };
1534         const static wchar_t *appNames[4] = { L"smplayer_portable.exe", L"smplayer.exe", L"MPUI.exe", L"foobar2000.exe" };
1535         const static wchar_t *valueNames[2] = { L"InstallLocation", L"InstallDir" };
1536
1537         for(size_t i = 0; i < 3; i++)
1538         {
1539                 for(size_t j = 0; j < 2; j++)
1540                 {
1541                         QString mplayerPath;
1542                         HKEY registryKeyHandle = NULL;
1543
1544                         const QString currentKey = MUTILS_QSTR(registryPrefix[j]).append(MUTILS_QSTR(registryKeys[i]));
1545                         if(RegOpenKeyExW(HKEY_LOCAL_MACHINE, MUTILS_WCHR(currentKey), 0, KEY_READ, &registryKeyHandle) == ERROR_SUCCESS)
1546                         {
1547                                 for(size_t k = 0; k < 2; k++)
1548                                 {
1549                                         wchar_t Buffer[4096];
1550                                         DWORD BuffSize = sizeof(wchar_t*) * 4096;
1551                                         DWORD DataType = REG_NONE;
1552                                         if(RegQueryValueExW(registryKeyHandle, valueNames[k], 0, &DataType, reinterpret_cast<BYTE*>(Buffer), &BuffSize) == ERROR_SUCCESS)
1553                                         {
1554                                                 if((DataType == REG_SZ) || (DataType == REG_EXPAND_SZ) || (DataType == REG_LINK))
1555                                                 {
1556                                                         mplayerPath = MUTILS_QSTR(Buffer);
1557                                                         break;
1558                                                 }
1559                                         }
1560                                 }
1561                                 RegCloseKey(registryKeyHandle);
1562                         }
1563
1564                         if(!mplayerPath.isEmpty())
1565                         {
1566                                 QDir mplayerDir(mplayerPath);
1567                                 if(mplayerDir.exists())
1568                                 {
1569                                         for(size_t k = 0; k < 4; k++)
1570                                         {
1571                                                 if(mplayerDir.exists(MUTILS_QSTR(appNames[k])))
1572                                                 {
1573                                                         qDebug("Player found at:\n%s\n", MUTILS_UTF8(mplayerDir.absoluteFilePath(MUTILS_QSTR(appNames[k]))));
1574                                                         QProcess::startDetached(mplayerDir.absoluteFilePath(MUTILS_QSTR(appNames[k])), QStringList() << QDir::toNativeSeparators(mediaFilePath));
1575                                                         return true;
1576                                                 }
1577                                         }
1578                                 }
1579                         }
1580                 }
1581         }
1582         return false;
1583 }
1584
1585 ///////////////////////////////////////////////////////////////////////////////
1586 // DEBUGGER CHECK
1587 ///////////////////////////////////////////////////////////////////////////////
1588
1589 static bool change_process_priority_helper(const HANDLE hProcess, const int priority)
1590 {
1591         bool ok = false;
1592
1593         switch(qBound(-2, priority, 2))
1594         {
1595         case 2:
1596                 ok = (SetPriorityClass(hProcess, HIGH_PRIORITY_CLASS) == TRUE);
1597                 break;
1598         case 1:
1599                 if(!(ok = (SetPriorityClass(hProcess, ABOVE_NORMAL_PRIORITY_CLASS) == TRUE)))
1600                 {
1601                         ok = (SetPriorityClass(hProcess, HIGH_PRIORITY_CLASS) == TRUE);
1602                 }
1603                 break;
1604         case 0:
1605                 ok = (SetPriorityClass(hProcess, NORMAL_PRIORITY_CLASS) == TRUE);
1606                 break;
1607         case -1:
1608                 if(!(ok = (SetPriorityClass(hProcess, BELOW_NORMAL_PRIORITY_CLASS) == TRUE)))
1609                 {
1610                         ok = (SetPriorityClass(hProcess, IDLE_PRIORITY_CLASS) == TRUE);
1611                 }
1612                 break;
1613         case -2:
1614                 ok = (SetPriorityClass(hProcess, IDLE_PRIORITY_CLASS) == TRUE);
1615                 break;
1616         }
1617
1618         return ok;
1619 }
1620
1621 bool MUtils::OS::change_process_priority(const int priority)
1622 {
1623         return change_process_priority_helper(GetCurrentProcess(), priority);
1624 }
1625
1626 bool MUtils::OS::change_process_priority(const QProcess *proc, const int priority)
1627 {
1628         if(Q_PID qPid = proc->pid())
1629         {
1630                 return change_process_priority_helper(qPid->hProcess, priority);
1631         }
1632         else
1633         {
1634                 return false;
1635         }
1636 }
1637
1638 ///////////////////////////////////////////////////////////////////////////////
1639 // PROCESS ID
1640 ///////////////////////////////////////////////////////////////////////////////
1641
1642 quint32 MUtils::OS::process_id(void)
1643 {
1644         return GetCurrentProcessId();
1645 }
1646
1647 quint32 MUtils::OS::process_id(const QProcess *const proc)
1648 {
1649         PROCESS_INFORMATION *procInf = proc->pid();
1650         return (procInf) ? procInf->dwProcessId : 0;
1651 }
1652
1653 quint32 MUtils::OS::thread_id(void)
1654 {
1655         return GetCurrentThreadId();
1656 }
1657
1658 quint32 MUtils::OS::thread_id(const QProcess *const proc)
1659 {
1660         PROCESS_INFORMATION *procInf = proc->pid();
1661         return (procInf) ? procInf->dwThreadId : 0;
1662 }
1663
1664 ///////////////////////////////////////////////////////////////////////////////
1665 // PROCESS SUSPEND/RESUME
1666 ///////////////////////////////////////////////////////////////////////////////
1667
1668 bool MUtils::OS::suspend_process(const QProcess *proc, const bool suspend)
1669 {
1670         if(Q_PID pid = proc->pid())
1671         {
1672                 if(suspend)
1673                 {
1674                         return (SuspendThread(pid->hThread) != ((DWORD) -1));
1675                 }
1676                 else
1677                 {
1678                         return (ResumeThread(pid->hThread)  != ((DWORD) -1));
1679                 }
1680         }
1681         else
1682         {
1683                 return false;
1684         }
1685 }
1686
1687 ///////////////////////////////////////////////////////////////////////////////
1688 // SYSTEM TIMER
1689 ///////////////////////////////////////////////////////////////////////////////
1690
1691 bool MUtils::OS::setup_timer_resolution(const quint32 &interval)
1692 {
1693         return timeBeginPeriod(interval) == TIMERR_NOERROR;
1694 }
1695
1696 bool MUtils::OS::reset_timer_resolution(const quint32 &interval)
1697 {
1698         return timeEndPeriod(interval) == TIMERR_NOERROR;
1699 }
1700
1701 ///////////////////////////////////////////////////////////////////////////////
1702 // SET FILE TIME
1703 ///////////////////////////////////////////////////////////////////////////////
1704
1705 static QScopedPointer<QDateTime> s_epoch;
1706 static QReadWriteLock            s_epochLock;
1707
1708 static const QDateTime *get_epoch(void)
1709 {
1710         QReadLocker rdLock(&s_epochLock);
1711
1712         if (s_epoch.isNull())
1713         {
1714                 rdLock.unlock();
1715                 QWriteLocker wrLock(&s_epochLock);
1716                 if (s_epoch.isNull())
1717                 {
1718                         s_epoch.reset(new QDateTime(QDate(1601, 1, 1), QTime(0, 0, 0, 0), Qt::UTC));
1719                 }
1720                 wrLock.unlock();
1721                 rdLock.relock();
1722         }
1723
1724         return s_epoch.data();
1725 }
1726
1727 static FILETIME *qt_time_to_file_time(FILETIME *const fileTime, const QDateTime &dateTime)
1728 {
1729         memset(fileTime, 0, sizeof(FILETIME));
1730
1731         if (const QDateTime *const epoch = get_epoch())
1732         {
1733                 const qint64 msecs = epoch->msecsTo(dateTime);
1734                 if (msecs > 0)
1735                 {
1736                         const quint64 ticks = 10000U * quint64(msecs);
1737                         fileTime->dwHighDateTime = ((ticks >> 32) & 0xFFFFFFFF);
1738                         fileTime->dwLowDateTime = (ticks & 0xFFFFFFFF);
1739                         return fileTime;
1740                 }
1741         }
1742
1743         return NULL;
1744 }
1745
1746 static bool set_file_time(const HANDLE hFile, const QDateTime &created, const QDateTime &lastMod, const QDateTime &lastAcc)
1747 {
1748         FILETIME ftCreated, ftLastMod, ftLastAcc;
1749
1750         FILETIME *const pCreated = created.isValid() ? qt_time_to_file_time(&ftCreated, created) : NULL;
1751         FILETIME *const pLastMod = lastMod.isValid() ? qt_time_to_file_time(&ftLastMod, lastMod) : NULL;
1752         FILETIME *const pLastAcc = lastAcc.isValid() ? qt_time_to_file_time(&ftLastAcc, lastAcc) : NULL;
1753
1754         if (pCreated || pLastMod || pLastAcc)
1755         {
1756                 return (SetFileTime(hFile, pCreated, pLastAcc, pLastMod) != FALSE);
1757         }
1758
1759         return false;
1760 }
1761
1762 bool MUtils::OS::set_file_time(const QFile &file, const QDateTime &created, const QDateTime &lastMod, const QDateTime &lastAcc)
1763 {
1764         const int fd = file.handle();
1765         if (fd >= 0)
1766         {
1767                 return set_file_time((HANDLE)_get_osfhandle(fd), created, lastMod, lastAcc);
1768         }
1769         return false;
1770 }
1771
1772 bool MUtils::OS::set_file_time(const QString &path, const QDateTime &created, const QDateTime &lastMod, const QDateTime &lastAcc)
1773 {
1774         const HANDLE hFile = CreateFileW(MUTILS_WCHR(path), FILE_WRITE_ATTRIBUTES, FILE_SHARE_READ, NULL, OPEN_EXISTING, 0, 0);
1775         bool okay = false;
1776         if ((hFile != NULL) && (hFile != INVALID_HANDLE_VALUE))
1777         {
1778                 okay = set_file_time(hFile, created, lastMod, lastAcc);
1779                 CloseHandle(hFile);
1780         }
1781         return okay;
1782 }
1783
1784 ///////////////////////////////////////////////////////////////////////////////
1785 // CHECK KEY STATE
1786 ///////////////////////////////////////////////////////////////////////////////
1787
1788 bool MUtils::OS::check_key_state_esc(void)
1789 {
1790         return (GetAsyncKeyState(VK_ESCAPE) & 0x0001) != 0;
1791 }
1792
1793 ///////////////////////////////////////////////////////////////////////////////
1794 // SHELL CHANGE NOTIFICATION
1795 ///////////////////////////////////////////////////////////////////////////////
1796
1797 void MUtils::OS::shell_change_notification(void)
1798 {
1799         SHChangeNotify(SHCNE_ASSOCCHANGED, SHCNF_IDLIST, NULL, NULL);
1800 }
1801
1802 ///////////////////////////////////////////////////////////////////////////////
1803 // WOW64 REDIRECTION
1804 ///////////////////////////////////////////////////////////////////////////////
1805
1806 typedef BOOL (_stdcall *Wow64DisableWow64FsRedirectionFun)(PVOID *OldValue);
1807 typedef BOOL (_stdcall *Wow64RevertWow64FsRedirectionFun) (PVOID  OldValue);
1808
1809 bool MUtils::OS::wow64fsredir_disable(uintptr_t &oldValue)
1810 {
1811         oldValue = reinterpret_cast<uintptr_t>(nullptr);
1812         const Wow64DisableWow64FsRedirectionFun wow64redir_disable = MUtils::Win32Utils::resolve<Wow64DisableWow64FsRedirectionFun>(QLatin1String("kernel32"), QLatin1String("Wow64DisableWow64FsRedirection"));
1813         if(wow64redir_disable)
1814         {
1815                 PVOID temp = NULL;
1816                 if (wow64redir_disable(&temp))
1817                 {
1818                         oldValue = reinterpret_cast<uintptr_t>(temp);
1819                         return true;
1820                 }
1821         }
1822         return false;
1823 }
1824
1825 bool MUtils::OS::wow64fsredir_revert(const uintptr_t oldValue)
1826 {
1827         const Wow64RevertWow64FsRedirectionFun wow64redir_disable = MUtils::Win32Utils::resolve<Wow64RevertWow64FsRedirectionFun>(QLatin1String("kernel32"), QLatin1String("Wow64RevertWow64FsRedirection"));
1828         if (wow64redir_disable)
1829         {
1830                 if (wow64redir_disable(reinterpret_cast<PVOID>(oldValue)))
1831                 {
1832                         return true;
1833                 }
1834         }
1835         return false;
1836 }
1837
1838 ///////////////////////////////////////////////////////////////////////////////
1839 // DEBUGGER CHECK
1840 ///////////////////////////////////////////////////////////////////////////////
1841
1842 QString MUtils::OS::get_envvar(const QString &name)
1843 {
1844         wchar_t *buffer = NULL;
1845         size_t requiredSize = 0, buffSize = 0;
1846         QString result;
1847
1848         forever
1849         {
1850                 //Adjust the buffer size as required first!
1851                 if (buffSize < requiredSize)
1852                 {
1853                         if (buffer)
1854                         {
1855                                 _freea(buffer);
1856                         }
1857                         if (!(buffer = (wchar_t*)_malloca(sizeof(wchar_t) * requiredSize)))
1858                         {
1859                                 break; /*out of memory error!*/
1860                         }
1861                         buffSize = requiredSize;
1862                 }
1863
1864                 //Try to fetch the environment variable now
1865                 const errno_t error = _wgetenv_s(&requiredSize, buffer, buffSize, MUTILS_WCHR(name));
1866                 if(!error)
1867                 {
1868                         if (requiredSize > 0)
1869                         {
1870                                 result = MUTILS_QSTR(buffer);
1871                         }
1872                         break; /*done*/
1873                 }
1874                 else if (error != ERANGE)
1875                 {
1876                         break; /*somethging else went wrong!*/
1877                 }
1878         }
1879
1880         if (buffer)
1881         {
1882                 _freea(buffer);
1883                 buffSize = 0;
1884                 buffer = NULL;
1885         }
1886
1887         return result;
1888 }
1889
1890 bool MUtils::OS::set_envvar(const QString &name, const QString &value)
1891 {
1892         if (!_wputenv_s(MUTILS_WCHR(name), MUTILS_WCHR(value)))
1893         {
1894                 return true;
1895         }
1896         return false;
1897 }
1898
1899 ///////////////////////////////////////////////////////////////////////////////
1900 // NULL DEVICE
1901 ///////////////////////////////////////////////////////////////////////////////
1902
1903 static const QLatin1String NULL_DEVICE("NUL");
1904
1905 const QLatin1String &MUtils::OS::null_device(void)
1906 {
1907         return NULL_DEVICE;
1908 }
1909
1910 ///////////////////////////////////////////////////////////////////////////////
1911 // DEBUGGER CHECK
1912 ///////////////////////////////////////////////////////////////////////////////
1913
1914 #if (!(MUTILS_DEBUG))
1915 static __forceinline bool is_debugger_present(void)
1916 {
1917         __try
1918         {
1919                 CloseHandle((HANDLE)((DWORD_PTR)-3));
1920         }
1921         __except(1)
1922         {
1923                 return true;
1924         }
1925
1926         BOOL bHaveDebugger = FALSE;
1927         if(CheckRemoteDebuggerPresent(GetCurrentProcess(), &bHaveDebugger))
1928         {
1929                 if(bHaveDebugger) return true;
1930         }
1931
1932         return IsDebuggerPresent();
1933 }
1934 static __forceinline bool check_debugger_helper(void)
1935 {
1936         if(is_debugger_present())
1937         {
1938                 MUtils::OS::fatal_exit(L"Not a debug build. Please unload debugger and try again!");
1939                 return true;
1940         }
1941         return false;
1942 }
1943 #else
1944 #define check_debugger_helper() (false)
1945 #endif
1946
1947 void MUtils::OS::check_debugger(void)
1948 {
1949         check_debugger_helper();
1950 }
1951
1952 static volatile bool g_debug_check = check_debugger_helper();
1953
1954 ///////////////////////////////////////////////////////////////////////////////
1955 // FATAL EXIT
1956 ///////////////////////////////////////////////////////////////////////////////
1957
1958 static MUtils::Internal::CriticalSection g_fatal_exit_lock;
1959 static QAtomicInt g_fatal_exit_flag;
1960
1961 static DWORD WINAPI fatal_exit_helper(LPVOID lpParameter)
1962 {
1963         MUtils::OS::system_message_err(L"GURU MEDITATION", (LPWSTR) lpParameter);
1964         return 0;
1965 }
1966
1967 void MUtils::OS::fatal_exit(const wchar_t* const errorMessage)
1968 {
1969         g_fatal_exit_lock.enter();
1970
1971         if(!g_fatal_exit_flag.testAndSetOrdered(0, 1))
1972         {
1973                 return; /*prevent recursive invocation*/
1974         }
1975
1976         if(g_main_thread_id != GetCurrentThreadId())
1977         {
1978                 if(HANDLE hThreadMain = OpenThread(THREAD_SUSPEND_RESUME, FALSE, g_main_thread_id))
1979                 {
1980                         SuspendThread(hThreadMain); /*stop main thread*/
1981                 }
1982         }
1983
1984         if(HANDLE hThread = CreateThread(NULL, 0, fatal_exit_helper, (LPVOID)errorMessage, 0, NULL))
1985         {
1986                 WaitForSingleObject(hThread, INFINITE);
1987         }
1988         else
1989         {
1990                 fatal_exit_helper((LPVOID)errorMessage);
1991         }
1992
1993         for(;;)
1994         {
1995                 TerminateProcess(GetCurrentProcess(), 666);
1996         }
1997 }
1998
1999 ///////////////////////////////////////////////////////////////////////////////