src/Startup.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 //MUtils
  23 #include <MUtils/Startup.h>
  24 #include <MUtils/OSSupport.h>
  25 #include <MUtils/Terminal.h>
  26 #include <MUtils/ErrorHandler.h>
  27 #include <MUtils/Registry.h>
  28 #include <MUtils/Exception.h>
  29
  30 //Qt
  31 #include <QApplication>
  32 #include <QMutex>
  33 #include <QStringList>
  34 #include <QLibraryInfo>
  35 #include <QTextCodec>
  36 #include <QImageReader>
  37 #include <QFont>
  38 #include <QMessageBox>
  39 #include <QtPlugin>
  40 #if QT_VERSION >= QT_VERSION_CHECK(5,0,0)
  41 #include <QAbstractNativeEventFilter>
  42 #else
  43 #define QAbstractNativeEventFilter QObject
  44 #define Q_DECL_OVERRIDE
  45 #endif
  46
  47 //CRT
  48 #include <string.h>
  49
  50 //MSVC
  51 #if defined(_MSC_VER)
  52 #define FORCE_INLINE __forceinline
  53 #else
  54 #define FORCE_INLINE inline
  55 #endif
  56
  57 ///////////////////////////////////////////////////////////////////////////////
  58 // Qt Static Initialization
  59 ///////////////////////////////////////////////////////////////////////////////
  60
  61 #ifdef QT_NODLL
  62
  63 #if QT_VERSION < QT_VERSION_CHECK(5,0,0)
  64 Q_IMPORT_PLUGIN(qico)
  65 Q_IMPORT_PLUGIN(qsvg)
  66 #else
  67 Q_IMPORT_PLUGIN(QWindowsIntegrationPlugin)
  68 Q_IMPORT_PLUGIN(QICOPlugin)
  69 #endif
  70
  71 static void doInitializeResources(void)
  72 {
  73         Q_INIT_RESOURCE(MUtilsData);
  74 }
  75
  76 static void doCleanupResources(void)
  77 {
  78         Q_CLEANUP_RESOURCE(MUtilsData);
  79 }
  80
  81 namespace MUtils
  82 {
  83         namespace Startup
  84         {
  85                 namespace Internal
  86                 {
  87                         class ResourceInitializer
  88                         {
  89                         public:
  90                                 ResourceInitializer(void)
  91                                 {
  92                                         doInitializeResources();
  93                                 }
  94
  95                                 ~ResourceInitializer(void)
  96                                 {
  97                                         doCleanupResources();
  98                                 }
  99                         };
 100
 101                         static ResourceInitializer resourceInitializer;
 102                 }
 103         }
 104 }
 105
 106 #endif //QT_NODLL
 107
 108 ///////////////////////////////////////////////////////////////////////////////
 109 // MESSAGE HANDLER
 110 ///////////////////////////////////////////////////////////////////////////////
 111
 112 #if QT_VERSION < QT_VERSION_CHECK(5,0,0)
 113 static void qt_message_handler(QtMsgType type, const char *const msg)
 114 {
 115         if (msg && msg[0])
 116         {
 117                 MUtils::Terminal::write(type, msg);
 118                 if ((type == QtCriticalMsg) || (type == QtFatalMsg))
 119                 {
 120                         MUtils::OS::fatal_exit(MUTILS_WCHR(QString::fromUtf8(msg)));
 121                 }
 122         }
 123 }
 124 #else
 125 #define qInstallMsgHandler(X) qInstallMessageHandler((X))
 126 static void qt_message_handler(QtMsgType type, const QMessageLogContext&, const QString &msg)
 127 {
 128         if (!msg.isEmpty())
 129         {
 130                 MUtils::Terminal::write(type, msg.toUtf8().constData());
 131                 if ((type == QtCriticalMsg) || (type == QtFatalMsg))
 132                 {
 133                         MUtils::OS::fatal_exit(MUTILS_WCHR(msg));
 134                 }
 135         }
 136 }
 137 #endif
 138
 139 ///////////////////////////////////////////////////////////////////////////////
 140 // EVENT FILTER
 141 ///////////////////////////////////////////////////////////////////////////////
 142
 143 namespace MUtils
 144 {
 145         namespace Startup
 146         {
 147                 namespace Internal
 148                 {
 149                         class NativeEventFilter : public QAbstractNativeEventFilter
 150                         {
 151                         public:
 152                                 bool nativeEventFilter(const QByteArray&, void *message, long *result) Q_DECL_OVERRIDE
 153                                 {
 154                                         return filterEvent(message, result);
 155                                 };
 156
 157                                 static FORCE_INLINE bool filterEvent(void *message, long *result)
 158                                 {
 159                                         return MUtils::OS::handle_os_message(message, result);
 160                                 }
 161
 162                                 static NativeEventFilter *instance(void)
 163                                 {
 164                                         while (m_instance.isNull())
 165                                         {
 166                                                 m_instance.reset(new NativeEventFilter());
 167                                         }
 168                                         return m_instance.data();
 169                                 }
 170
 171                         private:
 172                                 NativeEventFilter(void) {}
 173                                 static QScopedPointer<MUtils::Startup::Internal::NativeEventFilter> m_instance;
 174                         };
 175                 }
 176         }
 177 }
 178
 179 ///////////////////////////////////////////////////////////////////////////////
 180 // STARTUP FUNCTION
 181 ///////////////////////////////////////////////////////////////////////////////
 182
 183 static FORCE_INLINE int startup_main(int &argc, char **argv, MUtils::Startup::main_function_t *const entry_point, const char* const appName, const bool &debugConsole)
 184 {
 185         qInstallMsgHandler(qt_message_handler);
 186         MUtils::Terminal::setup(argc, argv, appName, MUTILS_DEBUG || debugConsole);
 187         return entry_point(argc, argv);
 188 }
 189
 190 static FORCE_INLINE int startup_helper(int &argc, char **argv, MUtils::Startup::main_function_t *const entry_point, const char* const appName, const bool &debugConsole)
 191 {
 192         int iResult = -1;
 193         try
 194         {
 195                 iResult = startup_main(argc, argv, entry_point, appName, debugConsole);
 196         }
 197         catch(const std::exception &error)
 198         {
 199                 MUTILS_PRINT_ERROR("\nGURU MEDITATION !!!\n\nException error:\n%s\n", error.what());
 200                 MUtils::OS::fatal_exit(L"Unhandeled C++ exception error, application will exit!");
 201         }
 202         catch(...)
 203         {
 204                 MUTILS_PRINT_ERROR("\nGURU MEDITATION !!!\n\nUnknown exception error!\n");
 205                 MUtils::OS::fatal_exit(L"Unhandeled C++ exception error, application will exit!");
 206         }
 207         return iResult;
 208 }
 209
 210 int MUtils::Startup::startup(int &argc, char **argv, main_function_t *const entry_point, const char* const appName, const bool &debugConsole)
 211 {
 212         int iResult = -1;
 213 #if (MUTILS_DEBUG)
 214 #ifdef _MSC_VER
 215         _CrtSetDbgFlag(_CRTDBG_CHECK_ALWAYS_DF || _CrtSetDbgFlag(_CRTDBG_REPORT_FLAG));
 216 #endif //_MSCVER
 217         iResult = startup_main(argc, argv, entry_point, appName, debugConsole);
 218 #else //MUTILS_DEBUG
 219 #ifdef _MSC_VER
 220         __try
 221         {
 222                 MUtils::ErrorHandler::initialize();
 223                 MUtils::OS::check_debugger();
 224                 iResult = startup_helper(argc, argv, entry_point, appName, debugConsole);
 225         }
 226         __except(1)
 227         {
 228                 MUTILS_PRINT_ERROR("\nGURU MEDITATION !!!\n\nUnhandeled structured exception error!\n");
 229                 MUtils::OS::fatal_exit(L"Unhandeled structured exception error, application will exit!");
 230         }
 231 #else //_MSCVER
 232         MUtils::ErrorHandler::initialize();
 233         MUtils::OS::check_debugger();
 234         iResult = startup_helper(argc, argv, entry_point, appName, debugConsole);
 235 #endif //_MSCVER
 236 #endif //MUTILS_DEBUG
 237         return iResult;
 238 }
 239
 240 ///////////////////////////////////////////////////////////////////////////////
 241 // QT INITIALIZATION
 242 ///////////////////////////////////////////////////////////////////////////////
 243
 244 static QMutex g_init_lock;
 245 static const char *const g_imageformats[] = {"bmp", "png", "jpg", "gif", "ico", "xpm", "svg", NULL};
 246
 247 static FORCE_INLINE QString getExecutableName(int &argc, char **argv)
 248 {
 249         if(argc >= 1)
 250         {
 251                 const char *argv0 = argv[0];
 252                 for (int i = 0; i < 2; i++)
 253                 {
 254                         static const char SEP[2] = { '/', '\\' };
 255                         if (const char *const ptr = strrchr(argv0, SEP[i]))
 256                         {
 257                                 argv0 = ptr + 1;
 258                         }
 259                 }
 260                 if(strlen(argv0) > 1)
 261                 {
 262                         return QString::fromLatin1(argv0);
 263                 }
 264         }
 265         return QLatin1String("Program.exe");
 266 }
 267
 268 static FORCE_INLINE void qt_registry_cleanup(void)
 269 {
 270         static const wchar_t *const QT_JUNK_KEY = L"Software\\Trolltech\\OrganizationDefaults";
 271         MUtils::Registry::reg_key_delete(MUtils::Registry::root_user, MUTILS_QSTR(QT_JUNK_KEY), true, true);
 272 }
 273
 274 QApplication *MUtils::Startup::create_qt(int &argc, char **argv, const QString &appName, const QString &appAuthor, const QString &appDomain)
 275 {
 276         QMutexLocker lock(&g_init_lock);
 277         const OS::ArgumentMap &arguments = MUtils::OS::arguments();
 278
 279         //Don't initialized again, if done already
 280         QScopedPointer<QApplication> application(dynamic_cast<QApplication*>(QApplication::instance()));
 281         if(!application.isNull())
 282         {
 283                 qWarning("Qt is already initialized!");
 284                 return application.take();
 285         }
 286
 287         //Extract executable name from argv[] array
 288         const QString executableName = getExecutableName(argc, argv);
 289
 290         //Check Qt version
 291 #ifdef QT_BUILD_KEY
 292         qDebug("Using Qt v%s [%s], %s, %s", qVersion(), QLibraryInfo::buildDate().toString(Qt::ISODate).toLatin1().constData(), (qSharedBuild() ? "DLL" : "Static"), QLibraryInfo::buildKey().toLatin1().constData());
 293         qDebug("Compiled with Qt v%s, %s\n", QT_VERSION_STR, QT_BUILD_KEY);
 294         if(_stricmp(qVersion(), QT_VERSION_STR))
 295         {
 296                 qFatal("%s", QApplication::tr("Executable '%1' requires Qt v%2, but found Qt v%3.").arg(executableName, QString::fromLatin1(QT_VERSION_STR), QString::fromLatin1(qVersion())).toLatin1().constData());
 297                 return false;
 298         }
 299         if(QLibraryInfo::buildKey().compare(QString::fromLatin1(QT_BUILD_KEY), Qt::CaseInsensitive))
 300         {
 301                 qFatal("%s", QApplication::tr("Executable '%1' was built for Qt '%2', but found Qt '%3'.").arg(executableName, QString::fromLatin1(QT_BUILD_KEY), QLibraryInfo::buildKey()).toLatin1().constData());
 302                 return false;
 303         }
 304 #else
 305         qDebug("Using Qt v%s [%s], %s", qVersion(), QLibraryInfo::buildDate().toString(Qt::ISODate).toLatin1().constData(), (qSharedBuild() ? "DLL" : "Static"));
 306         qDebug("Compiled with Qt v%s\n", QT_VERSION_STR);
 307 #endif
 308
 309         //Check the Windows version
 310         const MUtils::OS::Version::os_version_t &osVersion = MUtils::OS::os_version();
 311 #ifdef QT_NODLL
 312         if ((osVersion.type != MUtils::OS::Version::OS_WINDOWS) || (osVersion < MUtils::OS::Version::WINDOWS_WINXP) || ((osVersion == MUtils::OS::Version::WINDOWS_WINXP) && (osVersion.versionSPack < 3)))
 313         {
 314                 qFatal("%s", QApplication::tr("Executable '%1' requires Windows XP with SP-3 or later.").arg(executableName).toLatin1().constData());
 315         }
 316 #else
 317         if ((osVersion.type != MUtils::OS::Version::OS_WINDOWS) || (osVersion < MUtils::OS::Version::WINDOWS_VISTA) || ((osVersion == MUtils::OS::Version::WINDOWS_VISTA) && (osVersion.versionSPack < 2)))
 318         {
 319                 qFatal("%s", QApplication::tr("Executable '%1' requires Windows Vista with SP-2 or later.").arg(executableName).toLatin1().constData());
 320         }
 321 #endif
 322
 323         //Check whether we are running on a supported Windows version
 324         if(const char *const friendlyName = MUtils::OS::os_friendly_name(osVersion))
 325         {
 326                 qDebug("Running on %s (NT v%u.%u.%u, SP-%u).\n", friendlyName, osVersion.versionMajor, osVersion.versionMinor, osVersion.versionBuild, osVersion.versionSPack);
 327         }
 328         else
 329         {
 330                 const QString message = QString().sprintf("Running on an unknown WindowsNT-based system (NT v%u.%u.%u, SP-%u).", osVersion.versionMajor, osVersion.versionMinor, osVersion.versionBuild, osVersion.versionSPack);
 331                 qWarning("%s\n", MUTILS_UTF8(message));
 332                 MUtils::OS::system_message_wrn(MUTILS_WCHR(executableName), MUTILS_WCHR(message));
 333         }
 334
 335         //Check for compat mode
 336         if(osVersion.overrideFlag && (osVersion <= MUtils::OS::Version::WINDOWS_WN100))
 337         {
 338                 qWarning("Windows compatibility mode detected!");
 339                 if(!arguments.contains("ignore-compat-mode"))
 340                 {
 341                         qFatal("%s", QApplication::tr("Executable '%1' doesn't support Windows compatibility mode.").arg(executableName).toLatin1().constData());
 342                         return NULL;
 343                 }
 344         }
 345
 346         //Check for Wine
 347         if(MUtils::OS::running_on_wine())
 348         {
 349                 qWarning("It appears we are running under Wine, unexpected things might happen!\n");
 350         }
 351
 352         //Set text Codec for locale
 353         QTextCodec::setCodecForLocale(QTextCodec::codecForName("UTF-8"));
 354
 355         //Create Qt application instance
 356         application.reset(new QApplication(argc, argv));
 357
 358         //Register the Qt clean-up function
 359         atexit(qt_registry_cleanup);
 360
 361         //Load plugins from application directory
 362         QCoreApplication::setLibraryPaths(QStringList() << QApplication::applicationDirPath());
 363         qDebug("Library Path:\n%s\n", MUTILS_UTF8(QApplication::libraryPaths().first()));
 364
 365         //Set application properties
 366         application->setApplicationName(appName);
 367         application->setOrganizationDomain(appDomain);
 368         application->setOrganizationName(appAuthor);
 369 #if QT_VERSION < QT_VERSION_CHECK(5,0,0)
 370         application->setEventFilter(&Internal::NativeEventFilter::filterEvent);
 371 #else
 372         application->installNativeEventFilter(Internal::NativeEventFilter::instance());
 373 #endif
 374
 375         //Check for supported image formats
 376         QList<QByteArray> supportedFormats = QImageReader::supportedImageFormats();
 377         for(int i = 0; g_imageformats[i]; i++)
 378         {
 379                 if(!supportedFormats.contains(g_imageformats[i]))
 380                 {
 381                         qFatal("Qt initialization error: QImageIOHandler for '%s' missing!", g_imageformats[i]);
 382                         return NULL;
 383                 }
 384         }
 385
 386         //Setup console icon
 387         MUtils::Terminal::set_icon(QIcon(":/mutils/icons/bug.png"));
 388
 389         //Enable larger/smaller font size
 390         double fontScaleFactor = 1.0;
 391         if(arguments.contains("huge-font" )) fontScaleFactor = 1.500;
 392         if(arguments.contains("big-font"  )) fontScaleFactor = 1.250;
 393         if(arguments.contains("small-font")) fontScaleFactor = 0.875;
 394         if(arguments.contains("tiny-font" )) fontScaleFactor = 0.750;
 395         if(!qFuzzyCompare(fontScaleFactor, 1.0))
 396         {
 397                 qWarning("Application font scale factor set to: %.3f\n", fontScaleFactor);
 398                 QFont appFont = application->font();
 399                 appFont.setPointSizeF(appFont.pointSizeF() * fontScaleFactor);
 400                 application->setFont(appFont);
 401         }
 402
 403         //Check for process elevation
 404         if(MUtils::OS::is_elevated() && (!MUtils::OS::running_on_wine()))
 405         {
 406                 QMessageBox messageBox(QMessageBox::Warning, executableName, "<nobr>This program was started with 'elevated' rights, altough it does not need these rights.<br>Running an applications with unnecessary rights is a potential security risk!</nobr>", QMessageBox::NoButton, NULL, Qt::Dialog | Qt::MSWindowsFixedSizeDialogHint | Qt::WindowStaysOnTopHint);
 407                 messageBox.addButton("Quit Program (Recommended)", QMessageBox::NoRole);
 408                 messageBox.addButton("Ignore", QMessageBox::NoRole);
 409                 if(messageBox.exec() == 0)
 410                 {
 411                         return NULL;
 412                 }
 413         }
 414
 415         //QApplication created successfully
 416         return application.take();
 417 }
 418
 419 ///////////////////////////////////////////////////////////////////////////////
 420