src/common/quassel.cpp

   1 /***************************************************************************
   2  *   Copyright (C) 2005-2018 by the Quassel Project                        *
   3  *   devel@quassel-irc.org                                                 *
   4  *                                                                         *
   5  *   This program is free software; you can redistribute it and/or modify  *
   6  *   it under the terms of the GNU General Public License as published by  *
   7  *   the Free Software Foundation; either version 2 of the License, or     *
   8  *   (at your option) version 3.                                           *
   9  *                                                                         *
  10  *   This program 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         *
  13  *   GNU General Public License for more details.                          *
  14  *                                                                         *
  15  *   You should have received a copy of the GNU General Public License     *
  16  *   along with this program; if not, write to the                         *
  17  *   Free Software Foundation, Inc.,                                       *
  18  *   51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.         *
  19  ***************************************************************************/
  20
  21 #include "quassel.h"
  22
  23 #include <algorithm>
  24 #include <iostream>
  25
  26 #include <QCoreApplication>
  27 #include <QDateTime>
  28 #include <QDir>
  29 #include <QFileInfo>
  30 #include <QHostAddress>
  31 #include <QLibraryInfo>
  32 #include <QMetaEnum>
  33 #include <QSettings>
  34 #include <QTranslator>
  35 #include <QUuid>
  36
  37 #include "bufferinfo.h"
  38 #include "identity.h"
  39 #include "logger.h"
  40 #include "logmessage.h"
  41 #include "message.h"
  42 #include "network.h"
  43 #include "peer.h"
  44 #include "protocol.h"
  45 #include "syncableobject.h"
  46 #include "types.h"
  47
  48 #ifndef Q_OS_WIN
  49 #    include "posixsignalwatcher.h"
  50 #else
  51 #    include "windowssignalwatcher.h"
  52 #endif
  53
  54 #include "../../version.h"
  55
  56 Quassel::Quassel()
  57     : Singleton<Quassel>{this}
  58     , _logger{new Logger{this}}
  59 {
  60 }
  61
  62
  63 bool Quassel::init()
  64 {
  65     if (instance()->_initialized)
  66         return true;  // allow multiple invocations because of MonolithicApplication
  67
  68 #if 0
  69     // Setup signal handling
  70     // We catch SIGTERM and SIGINT (caused by Ctrl+C) to graceful shutdown Quassel.
  71     signal(SIGTERM, handleSignal);
  72     signal(SIGINT, handleSignal);
  73 #ifndef Q_OS_WIN
  74     // SIGHUP is used to reload configuration (i.e. SSL certificates)
  75     // Windows does not support SIGHUP
  76     signal(SIGHUP, handleSignal);
  77 #endif
  78
  79     if (instance()->_handleCrashes) {
  80         // we have crashhandler for win32 and unix (based on execinfo).
  81 #if defined(Q_OS_WIN) || defined(HAVE_EXECINFO)
  82 # ifndef Q_OS_WIN
  83         // we only handle crashes ourselves if coredumps are disabled
  84         struct rlimit *limit = (rlimit *)malloc(sizeof(struct rlimit));
  85         int rc = getrlimit(RLIMIT_CORE, limit);
  86
  87         if (rc == -1 || !((long)limit->rlim_cur > 0 || limit->rlim_cur == RLIM_INFINITY)) {
  88 # endif /* Q_OS_WIN */
  89             signal(SIGABRT, handleSignal);
  90             signal(SIGSEGV, handleSignal);
  91 # ifndef Q_OS_WIN
  92             signal(SIGBUS, handleSignal);
  93         }
  94         free(limit);
  95 # endif /* Q_OS_WIN */
  96 #endif /* Q_OS_WIN || HAVE_EXECINFO */
  97     }
  98 #endif
  99
 100     instance()->setupSignalHandling();
 101
 102     instance()->_initialized = true;
 103     qsrand(QTime(0, 0, 0).secsTo(QTime::currentTime()));
 104
 105     instance()->setupEnvironment();
 106     instance()->registerMetaTypes();
 107
 108     Network::setDefaultCodecForServer("UTF-8");
 109     Network::setDefaultCodecForEncoding("UTF-8");
 110     Network::setDefaultCodecForDecoding("ISO-8859-15");
 111
 112     if (isOptionSet("help")) {
 113         instance()->_cliParser->usage();
 114         return false;
 115     }
 116
 117     if (isOptionSet("version")) {
 118         std::cout << qPrintable("Quassel IRC: " + Quassel::buildInfo().plainVersionString) << std::endl;
 119         return false;
 120     }
 121
 122     // Don't keep a debug log on the core
 123     return instance()->logger()->setup(runMode() != RunMode::CoreOnly);
 124 }
 125
 126
 127 Logger *Quassel::logger() const
 128 {
 129     return _logger;
 130 }
 131
 132
 133 void Quassel::registerQuitHandler(QuitHandler handler)
 134 {
 135     instance()->_quitHandlers.emplace_back(std::move(handler));
 136 }
 137
 138 void Quassel::quit()
 139 {
 140     // Protect against multiple invocations (e.g. triggered by MainWin::closeEvent())
 141     if (!_quitting) {
 142         _quitting = true;
 143         quInfo() << "Quitting...";
 144         if (_quitHandlers.empty()) {
 145             QCoreApplication::quit();
 146         }
 147         else {
 148             // Note: We expect one of the registered handlers to call QCoreApplication::quit()
 149             for (auto &&handler : _quitHandlers) {
 150                 handler();
 151             }
 152         }
 153     }
 154 }
 155
 156
 157 void Quassel::registerReloadHandler(ReloadHandler handler)
 158 {
 159     instance()->_reloadHandlers.emplace_back(std::move(handler));
 160 }
 161
 162
 163 bool Quassel::reloadConfig()
 164 {
 165     bool result{true};
 166     for (auto &&handler : _reloadHandlers) {
 167         result = result && handler();
 168     }
 169     return result;
 170 }
 171
 172
 173 //! Register our custom types with Qt's Meta Object System.
 174 /**  This makes them available for QVariant and in signals/slots, among other things.
 175 *
 176 */
 177 void Quassel::registerMetaTypes()
 178 {
 179     // Complex types
 180     qRegisterMetaType<Message>("Message");
 181     qRegisterMetaType<BufferInfo>("BufferInfo");
 182     qRegisterMetaType<NetworkInfo>("NetworkInfo");
 183     qRegisterMetaType<Network::Server>("Network::Server");
 184     qRegisterMetaType<Identity>("Identity");
 185
 186     qRegisterMetaTypeStreamOperators<Message>("Message");
 187     qRegisterMetaTypeStreamOperators<BufferInfo>("BufferInfo");
 188     qRegisterMetaTypeStreamOperators<NetworkInfo>("NetworkInfo");
 189     qRegisterMetaTypeStreamOperators<Network::Server>("Network::Server");
 190     qRegisterMetaTypeStreamOperators<Identity>("Identity");
 191
 192     qRegisterMetaType<IdentityId>("IdentityId");
 193     qRegisterMetaType<BufferId>("BufferId");
 194     qRegisterMetaType<NetworkId>("NetworkId");
 195     qRegisterMetaType<UserId>("UserId");
 196     qRegisterMetaType<AccountId>("AccountId");
 197     qRegisterMetaType<MsgId>("MsgId");
 198
 199     qRegisterMetaType<QHostAddress>("QHostAddress");
 200     qRegisterMetaTypeStreamOperators<QHostAddress>("QHostAddress");
 201     qRegisterMetaType<QUuid>("QUuid");
 202     qRegisterMetaTypeStreamOperators<QUuid>("QUuid");
 203
 204     qRegisterMetaTypeStreamOperators<IdentityId>("IdentityId");
 205     qRegisterMetaTypeStreamOperators<BufferId>("BufferId");
 206     qRegisterMetaTypeStreamOperators<NetworkId>("NetworkId");
 207     qRegisterMetaTypeStreamOperators<UserId>("UserId");
 208     qRegisterMetaTypeStreamOperators<AccountId>("AccountId");
 209     qRegisterMetaTypeStreamOperators<MsgId>("MsgId");
 210
 211     qRegisterMetaType<Protocol::SessionState>("Protocol::SessionState");
 212     qRegisterMetaType<PeerPtr>("PeerPtr");
 213     qRegisterMetaTypeStreamOperators<PeerPtr>("PeerPtr");
 214
 215     // Versions of Qt prior to 4.7 didn't define QVariant as a meta type
 216     if (!QMetaType::type("QVariant")) {
 217         qRegisterMetaType<QVariant>("QVariant");
 218         qRegisterMetaTypeStreamOperators<QVariant>("QVariant");
 219     }
 220 }
 221
 222
 223 void Quassel::setupEnvironment()
 224 {
 225     // On modern Linux systems, XDG_DATA_DIRS contains a list of directories containing application data. This
 226     // is, for example, used by Qt for finding icons and other things. In case Quassel is installed in a non-standard
 227     // prefix (or run from the build directory), it makes sense to add this to XDG_DATA_DIRS so we don't have to
 228     // hack extra search paths into various places.
 229 #ifdef Q_OS_UNIX
 230     QString xdgDataVar = QFile::decodeName(qgetenv("XDG_DATA_DIRS"));
 231     if (xdgDataVar.isEmpty())
 232         xdgDataVar = QLatin1String("/usr/local/share:/usr/share"); // sane defaults
 233
 234     QStringList xdgDirs = xdgDataVar.split(QLatin1Char(':'), QString::SkipEmptyParts);
 235
 236     // Add our install prefix (if we're not in a bindir, this just adds the current workdir)
 237     QString appDir = QCoreApplication::applicationDirPath();
 238     int binpos = appDir.lastIndexOf("/bin");
 239     if (binpos >= 0) {
 240         appDir.replace(binpos, 4, "/share");
 241         xdgDirs.append(appDir);
 242         // Also append apps/quassel, this is only for QIconLoader to find icons there
 243         xdgDirs.append(appDir + "/apps/quassel");
 244     } else
 245         xdgDirs.append(appDir);  // build directory is always the last fallback
 246
 247     xdgDirs.removeDuplicates();
 248
 249     qputenv("XDG_DATA_DIRS", QFile::encodeName(xdgDirs.join(":")));
 250 #endif
 251 }
 252
 253
 254 void Quassel::setupBuildInfo()
 255 {
 256     BuildInfo buildInfo;
 257     buildInfo.applicationName = "quassel";
 258     buildInfo.coreApplicationName = "quasselcore";
 259     buildInfo.clientApplicationName = "quasselclient";
 260     buildInfo.organizationName = "Quassel Project";
 261     buildInfo.organizationDomain = "quassel-irc.org";
 262
 263     buildInfo.protocolVersion = 10; // FIXME: deprecated, will be removed
 264
 265     buildInfo.baseVersion = QUASSEL_VERSION_STRING;
 266     buildInfo.generatedVersion = GIT_DESCRIBE;
 267
 268     // Check if we got a commit hash
 269     if (!QString(GIT_HEAD).isEmpty()) {
 270         buildInfo.commitHash = GIT_HEAD;
 271         // Set to Unix epoch, wrapped as a string for backwards-compatibility
 272         buildInfo.commitDate = QString::number(GIT_COMMIT_DATE);
 273     }
 274     else if (!QString(DIST_HASH).contains("Format")) {
 275         buildInfo.commitHash = DIST_HASH;
 276         // Leave as Unix epoch if set as Unix epoch, but don't force this for
 277         // backwards-compatibility with existing packaging/release tools that might set strings.
 278         buildInfo.commitDate = QString(DIST_DATE);
 279     }
 280
 281     // create a nice version string
 282     if (buildInfo.generatedVersion.isEmpty()) {
 283         if (!buildInfo.commitHash.isEmpty()) {
 284             // dist version
 285             buildInfo.plainVersionString = QString{"v%1 (dist-%2)"}
 286                                                .arg(buildInfo.baseVersion)
 287                                                .arg(buildInfo.commitHash.left(7));
 288             buildInfo.fancyVersionString = QString{"v%1 (dist-<a href=\"https://github.com/quassel/quassel/commit/%3\">%2</a>)"}
 289                                                .arg(buildInfo.baseVersion)
 290                                                .arg(buildInfo.commitHash.left(7))
 291                                                .arg(buildInfo.commitHash);
 292         }
 293         else {
 294             // we only have a base version :(
 295             buildInfo.plainVersionString = QString{"v%1 (unknown revision)"}.arg(buildInfo.baseVersion);
 296         }
 297     }
 298     else {
 299         // analyze what we got from git-describe
 300         static const QRegExp rx{"(.*)-(\\d+)-g([0-9a-f]+)(-dirty)?$"};
 301         if (rx.exactMatch(buildInfo.generatedVersion)) {
 302             QString distance = rx.cap(2) == "0" ? QString{} : QString{"%1+%2 "}.arg(rx.cap(1), rx.cap(2));
 303             buildInfo.plainVersionString = QString{"v%1 (%2git-%3%4)"}.arg(buildInfo.baseVersion, distance, rx.cap(3), rx.cap(4));
 304             if (!buildInfo.commitHash.isEmpty()) {
 305                 buildInfo.fancyVersionString = QString{"v%1 (%2git-<a href=\"https://github.com/quassel/quassel/commit/%5\">%3</a>%4)"}
 306                                                    .arg(buildInfo.baseVersion, distance, rx.cap(3), rx.cap(4), buildInfo.commitHash);
 307             }
 308         }
 309         else {
 310             buildInfo.plainVersionString = QString{"v%1 (invalid revision)"}.arg(buildInfo.baseVersion);
 311         }
 312     }
 313     if (buildInfo.fancyVersionString.isEmpty()) {
 314         buildInfo.fancyVersionString = buildInfo.plainVersionString;
 315     }
 316
 317     instance()->_buildInfo = std::move(buildInfo);
 318 }
 319
 320
 321 const Quassel::BuildInfo &Quassel::buildInfo()
 322 {
 323     return instance()->_buildInfo;
 324 }
 325
 326
 327 void Quassel::setupSignalHandling()
 328 {
 329 #ifndef Q_OS_WIN
 330     _signalWatcher = new PosixSignalWatcher(this);
 331 #else
 332     _signalWatcher = new WindowsSignalWatcher(this);
 333 #endif
 334     connect(_signalWatcher, SIGNAL(handleSignal(AbstractSignalWatcher::Action)), this, SLOT(handleSignal(AbstractSignalWatcher::Action)));
 335 }
 336
 337 void Quassel::handleSignal(AbstractSignalWatcher::Action action)
 338 {
 339     switch (action) {
 340     case AbstractSignalWatcher::Action::Reload:
 341         // Most applications use this as the 'configuration reload' command, e.g. nginx uses it for graceful reloading of processes.
 342         if (!_reloadHandlers.empty()) {
 343             quInfo() << "Reloading configuration";
 344             if (reloadConfig()) {
 345                 quInfo() << "Successfully reloaded configuration";
 346             }
 347         }
 348         break;
 349     case AbstractSignalWatcher::Action::Terminate:
 350         if (!_quitting) {
 351             quit();
 352         }
 353         else {
 354             quInfo() << "Already shutting down, ignoring signal";
 355         }
 356         break;
 357     case AbstractSignalWatcher::Action::HandleCrash:
 358         logBacktrace(instance()->coreDumpFileName());
 359         exit(EXIT_FAILURE);
 360     }
 361 }
 362
 363
 364 Quassel::RunMode Quassel::runMode() {
 365     return instance()->_runMode;
 366 }
 367
 368
 369 void Quassel::setRunMode(RunMode runMode)
 370 {
 371     instance()->_runMode = runMode;
 372 }
 373
 374
 375 void Quassel::setCliParser(std::shared_ptr<AbstractCliParser> parser)
 376 {
 377     instance()->_cliParser = std::move(parser);
 378 }
 379
 380
 381 QString Quassel::optionValue(const QString &key)
 382 {
 383     return instance()->_cliParser ? instance()->_cliParser->value(key) : QString{};
 384 }
 385
 386
 387 bool Quassel::isOptionSet(const QString &key)
 388 {
 389     return instance()->_cliParser ? instance()->_cliParser->isSet(key) : false;
 390 }
 391
 392
 393 const QString &Quassel::coreDumpFileName()
 394 {
 395     if (_coreDumpFileName.isEmpty()) {
 396         QDir configDir(configDirPath());
 397         _coreDumpFileName = configDir.absoluteFilePath(QString("Quassel-Crash-%1.log").arg(QDateTime::currentDateTime().toString("yyyyMMdd-hhmm")));
 398         QFile dumpFile(_coreDumpFileName);
 399         dumpFile.open(QIODevice::Append);
 400         QTextStream dumpStream(&dumpFile);
 401         dumpStream << "Quassel IRC: " << _buildInfo.baseVersion << ' ' << _buildInfo.commitHash << '\n';
 402         qDebug() << "Quassel IRC: " << _buildInfo.baseVersion << ' ' << _buildInfo.commitHash;
 403         dumpStream.flush();
 404         dumpFile.close();
 405     }
 406     return _coreDumpFileName;
 407 }
 408
 409
 410 QString Quassel::configDirPath()
 411 {
 412     if (!instance()->_configDirPath.isEmpty())
 413         return instance()->_configDirPath;
 414
 415     QString path;
 416     if (isOptionSet("datadir")) {
 417         qWarning() << "Obsolete option --datadir used!";
 418         path = Quassel::optionValue("datadir");
 419     }
 420     else if (isOptionSet("configdir")) {
 421         path = Quassel::optionValue("configdir");
 422     }
 423     else {
 424 #ifdef Q_OS_MAC
 425         // On Mac, the path is always the same
 426         path = QDir::homePath() + "/Library/Application Support/Quassel/";
 427 #else
 428         // We abuse QSettings to find us a sensible path on the other platforms
 429 #  ifdef Q_OS_WIN
 430         // don't use the registry
 431         QSettings::Format format = QSettings::IniFormat;
 432 #  else
 433         QSettings::Format format = QSettings::NativeFormat;
 434 #  endif
 435         QSettings s(format, QSettings::UserScope, QCoreApplication::organizationDomain(), buildInfo().applicationName);
 436         QFileInfo fileInfo(s.fileName());
 437         path = fileInfo.dir().absolutePath();
 438 #endif /* Q_OS_MAC */
 439     }
 440
 441     path = QFileInfo{path}.absoluteFilePath();
 442
 443     if (!path.endsWith(QDir::separator()) && !path.endsWith('/'))
 444         path += QDir::separator();
 445
 446     QDir qDir{path};
 447     if (!qDir.exists(path)) {
 448         if (!qDir.mkpath(path)) {
 449             qCritical() << "Unable to create Quassel config directory:" << qPrintable(qDir.absolutePath());
 450             return {};
 451         }
 452     }
 453
 454     instance()->_configDirPath = path;
 455     return path;
 456 }
 457
 458
 459 void Quassel::setDataDirPaths(const QStringList &paths) {
 460     instance()->_dataDirPaths = paths;
 461 }
 462
 463
 464 QStringList Quassel::dataDirPaths()
 465 {
 466     return instance()->_dataDirPaths;
 467 }
 468
 469
 470 QStringList Quassel::findDataDirPaths()
 471 {
 472     // TODO Qt5
 473     // We don't use QStandardPaths for now, as we still need to provide fallbacks for Qt4 and
 474     // want to stay consistent.
 475
 476     QStringList dataDirNames;
 477 #ifdef Q_OS_WIN
 478     dataDirNames << qgetenv("APPDATA") + QCoreApplication::organizationDomain() + "/share/apps/quassel/"
 479                  << qgetenv("APPDATA") + QCoreApplication::organizationDomain()
 480                  << QCoreApplication::applicationDirPath();
 481 #elif defined Q_OS_MAC
 482     dataDirNames << QDir::homePath() + "/Library/Application Support/Quassel/"
 483                  << QCoreApplication::applicationDirPath();
 484 #else
 485     // Linux et al
 486
 487     // XDG_DATA_HOME is the location for users to override system-installed files, usually in .local/share
 488     // This should thus come first.
 489     QString xdgDataHome = QFile::decodeName(qgetenv("XDG_DATA_HOME"));
 490     if (xdgDataHome.isEmpty())
 491         xdgDataHome = QDir::homePath() + QLatin1String("/.local/share");
 492     dataDirNames << xdgDataHome;
 493
 494     // Now whatever is configured through XDG_DATA_DIRS
 495     QString xdgDataDirs = QFile::decodeName(qgetenv("XDG_DATA_DIRS"));
 496     if (xdgDataDirs.isEmpty())
 497         dataDirNames << "/usr/local/share" << "/usr/share";
 498     else
 499         dataDirNames << xdgDataDirs.split(':', QString::SkipEmptyParts);
 500
 501     // Just in case, also check our install prefix
 502     dataDirNames << QCoreApplication::applicationDirPath() + "/../share";
 503
 504     // Normalize and append our application name
 505     for (int i = 0; i < dataDirNames.count(); i++)
 506         dataDirNames[i] = QDir::cleanPath(dataDirNames.at(i)) + "/quassel/";
 507
 508 #endif
 509
 510     // Add resource path and workdir just in case.
 511     // Workdir should have precedence
 512     dataDirNames.prepend(QCoreApplication::applicationDirPath() + "/data/");
 513     dataDirNames.append(":/data/");
 514
 515     // Append trailing '/' and check for existence
 516     auto iter = dataDirNames.begin();
 517     while (iter != dataDirNames.end()) {
 518         if (!iter->endsWith(QDir::separator()) && !iter->endsWith('/'))
 519             iter->append(QDir::separator());
 520         if (!QFile::exists(*iter))
 521             iter = dataDirNames.erase(iter);
 522         else
 523             ++iter;
 524     }
 525
 526     dataDirNames.removeDuplicates();
 527
 528     return dataDirNames;
 529 }
 530
 531
 532 QString Quassel::findDataFilePath(const QString &fileName)
 533 {
 534     QStringList dataDirs = dataDirPaths();
 535     foreach(QString dataDir, dataDirs) {
 536         QString path = dataDir + fileName;
 537         if (QFile::exists(path))
 538             return path;
 539     }
 540     return QString();
 541 }
 542
 543
 544 QStringList Quassel::scriptDirPaths()
 545 {
 546     QStringList res(configDirPath() + "scripts/");
 547     foreach(QString path, dataDirPaths())
 548     res << path + "scripts/";
 549     return res;
 550 }
 551
 552
 553 QString Quassel::translationDirPath()
 554 {
 555     if (instance()->_translationDirPath.isEmpty()) {
 556         // We support only one translation dir; fallback mechanisms wouldn't work else.
 557         // This means that if we have a $data/translations dir, the internal :/i18n resource won't be considered.
 558         foreach(const QString &dir, dataDirPaths()) {
 559             if (QFile::exists(dir + "translations/")) {
 560                 instance()->_translationDirPath = dir + "translations/";
 561                 break;
 562             }
 563         }
 564         if (instance()->_translationDirPath.isEmpty())
 565             instance()->_translationDirPath = ":/i18n/";
 566     }
 567     return instance()->_translationDirPath;
 568 }
 569
 570
 571 void Quassel::loadTranslation(const QLocale &locale)
 572 {
 573     QTranslator *qtTranslator = QCoreApplication::instance()->findChild<QTranslator *>("QtTr");
 574     QTranslator *quasselTranslator = QCoreApplication::instance()->findChild<QTranslator *>("QuasselTr");
 575
 576     if (qtTranslator)
 577         qApp->removeTranslator(qtTranslator);
 578     if (quasselTranslator)
 579         qApp->removeTranslator(quasselTranslator);
 580
 581     // We use QLocale::C to indicate that we don't want a translation
 582     if (locale.language() == QLocale::C)
 583         return;
 584
 585     qtTranslator = new QTranslator(qApp);
 586     qtTranslator->setObjectName("QtTr");
 587     qApp->installTranslator(qtTranslator);
 588
 589     quasselTranslator = new QTranslator(qApp);
 590     quasselTranslator->setObjectName("QuasselTr");
 591     qApp->installTranslator(quasselTranslator);
 592
 593 #if QT_VERSION >= 0x040800 && !defined Q_OS_MAC
 594     bool success = qtTranslator->load(locale, QString("qt_"), translationDirPath());
 595     if (!success)
 596         qtTranslator->load(locale, QString("qt_"), QLibraryInfo::location(QLibraryInfo::TranslationsPath));
 597     quasselTranslator->load(locale, QString(""), translationDirPath());
 598 #else
 599     bool success = qtTranslator->load(QString("qt_%1").arg(locale.name()), translationDirPath());
 600     if (!success)
 601         qtTranslator->load(QString("qt_%1").arg(locale.name()), QLibraryInfo::location(QLibraryInfo::TranslationsPath));
 602     quasselTranslator->load(QString("%1").arg(locale.name()), translationDirPath());
 603 #endif
 604 }
 605
 606
 607 // ---- Quassel::Features ---------------------------------------------------------------------------------------------
 608
 609 Quassel::Features::Features()
 610 {
 611     QStringList features;
 612
 613     // TODO Qt5: Use QMetaEnum::fromType()
 614     auto featureEnum = Quassel::staticMetaObject.enumerator(Quassel::staticMetaObject.indexOfEnumerator("Feature"));
 615     _features.resize(featureEnum.keyCount(), true);  // enable all known features to true
 616 }
 617
 618
 619 Quassel::Features::Features(const QStringList &features, LegacyFeatures legacyFeatures)
 620 {
 621     // TODO Qt5: Use QMetaEnum::fromType()
 622     auto featureEnum = Quassel::staticMetaObject.enumerator(Quassel::staticMetaObject.indexOfEnumerator("Feature"));
 623     _features.resize(featureEnum.keyCount(), false);
 624
 625     for (auto &&feature : features) {
 626         int i = featureEnum.keyToValue(qPrintable(feature));
 627         if (i >= 0) {
 628             _features[i] = true;
 629         }
 630         else {
 631             _unknownFeatures << feature;
 632         }
 633     }
 634
 635     if (legacyFeatures) {
 636         // TODO Qt5: Use QMetaEnum::fromType()
 637         auto legacyFeatureEnum = Quassel::staticMetaObject.enumerator(Quassel::staticMetaObject.indexOfEnumerator("LegacyFeature"));
 638         for (quint32 mask = 0x0001; mask <= 0x8000; mask <<=1) {
 639             if (static_cast<quint32>(legacyFeatures) & mask) {
 640                 int i = featureEnum.keyToValue(legacyFeatureEnum.valueToKey(mask));
 641                 if (i >= 0) {
 642                     _features[i] = true;
 643                 }
 644             }
 645         }
 646     }
 647 }
 648
 649
 650 bool Quassel::Features::isEnabled(Feature feature) const
 651 {
 652     size_t i = static_cast<size_t>(feature);
 653     return i < _features.size() ? _features[i] : false;
 654 }
 655
 656
 657 QStringList Quassel::Features::toStringList(bool enabled) const
 658 {
 659     // Check if any feature is enabled
 660     if (!enabled && std::all_of(_features.cbegin(), _features.cend(), [](bool feature) { return !feature; })) {
 661         return QStringList{} << "NoFeatures";
 662     }
 663
 664     QStringList result;
 665
 666     // TODO Qt5: Use QMetaEnum::fromType()
 667     auto featureEnum = Quassel::staticMetaObject.enumerator(Quassel::staticMetaObject.indexOfEnumerator("Feature"));
 668     for (quint32 i = 0; i < _features.size(); ++i) {
 669         if (_features[i] == enabled) {
 670             result << featureEnum.key(i);
 671         }
 672     }
 673     return result;
 674 }
 675
 676
 677 Quassel::LegacyFeatures Quassel::Features::toLegacyFeatures() const
 678 {
 679     // TODO Qt5: Use LegacyFeatures (flag operators for enum classes not supported in Qt4)
 680     quint32 result{0};
 681     // TODO Qt5: Use QMetaEnum::fromType()
 682     auto featureEnum = Quassel::staticMetaObject.enumerator(Quassel::staticMetaObject.indexOfEnumerator("Feature"));
 683     auto legacyFeatureEnum = Quassel::staticMetaObject.enumerator(Quassel::staticMetaObject.indexOfEnumerator("LegacyFeature"));
 684
 685     for (quint32 i = 0; i < _features.size(); ++i) {
 686         if (_features[i]) {
 687             int v = legacyFeatureEnum.keyToValue(featureEnum.key(i));
 688             if (v >= 0) {
 689                 result |= v;
 690             }
 691         }
 692     }
 693     return static_cast<LegacyFeatures>(result);
 694 }
 695
 696
 697 QStringList Quassel::Features::unknownFeatures() const
 698 {
 699     return _unknownFeatures;
 700 }