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