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 <signal.h>
  27 #if !defined Q_OS_WIN && !defined Q_OS_MAC
  28 #  include <sys/types.h>
  29 #  include <sys/time.h>
  30 #  include <sys/resource.h>
  31 #endif
  32
  33 #include <QCoreApplication>
  34 #include <QDateTime>
  35 #include <QDir>
  36 #include <QFileInfo>
  37 #include <QHostAddress>
  38 #include <QLibraryInfo>
  39 #include <QMetaEnum>
  40 #include <QSettings>
  41 #include <QTranslator>
  42 #include <QUuid>
  43
  44 #include "bufferinfo.h"
  45 #include "identity.h"
  46 #include "logger.h"
  47 #include "logmessage.h"
  48 #include "message.h"
  49 #include "network.h"
  50 #include "peer.h"
  51 #include "protocol.h"
  52 #include "syncableobject.h"
  53 #include "types.h"
  54
  55 #include "../../version.h"
  56
  57 Quassel *Quassel::instance()
  58 {
  59     static Quassel instance;
  60     return &instance;
  61 }
  62
  63
  64 Quassel::Quassel()
  65     : _logger{new Logger{this}}
  66 {
  67 }
  68
  69
  70 bool Quassel::init()
  71 {
  72     if (instance()->_initialized)
  73         return true;  // allow multiple invocations because of MonolithicApplication
  74
  75     // Setup signal handling
  76     // TODO: Don't use unsafe methods, see handleSignal()
  77
  78     // We catch SIGTERM and SIGINT (caused by Ctrl+C) to graceful shutdown Quassel.
  79     signal(SIGTERM, handleSignal);
  80     signal(SIGINT, handleSignal);
  81 #ifndef Q_OS_WIN
  82     // SIGHUP is used to reload configuration (i.e. SSL certificates)
  83     // Windows does not support SIGHUP
  84     signal(SIGHUP, handleSignal);
  85 #endif
  86
  87     if (instance()->_handleCrashes) {
  88         // we have crashhandler for win32 and unix (based on execinfo).
  89 #if defined(Q_OS_WIN) || defined(HAVE_EXECINFO)
  90 # ifndef Q_OS_WIN
  91         // we only handle crashes ourselves if coredumps are disabled
  92         struct rlimit *limit = (rlimit *)malloc(sizeof(struct rlimit));
  93         int rc = getrlimit(RLIMIT_CORE, limit);
  94
  95         if (rc == -1 || !((long)limit->rlim_cur > 0 || limit->rlim_cur == RLIM_INFINITY)) {
  96 # endif /* Q_OS_WIN */
  97             signal(SIGABRT, handleSignal);
  98             signal(SIGSEGV, handleSignal);
  99 # ifndef Q_OS_WIN
 100             signal(SIGBUS, handleSignal);
 101         }
 102         free(limit);
 103 # endif /* Q_OS_WIN */
 104 #endif /* Q_OS_WIN || HAVE_EXECINFO */
 105     }
 106
 107     instance()->_initialized = true;
 108     qsrand(QTime(0, 0, 0).secsTo(QTime::currentTime()));
 109
 110     instance()->setupEnvironment();
 111     instance()->registerMetaTypes();
 112
 113     Network::setDefaultCodecForServer("UTF-8");
 114     Network::setDefaultCodecForEncoding("UTF-8");
 115     Network::setDefaultCodecForDecoding("ISO-8859-15");
 116
 117     if (isOptionSet("help")) {
 118         instance()->_cliParser->usage();
 119         return false;
 120     }
 121
 122     if (isOptionSet("version")) {
 123         std::cout << qPrintable("Quassel IRC: " + Quassel::buildInfo().plainVersionString) << std::endl;
 124         return false;
 125     }
 126
 127     // Don't keep a debug log on the core
 128     return instance()->logger()->setup(runMode() != RunMode::CoreOnly);
 129 }
 130
 131
 132 void Quassel::destroy()
 133 {
 134 }
 135
 136
 137 Logger *Quassel::logger() const
 138 {
 139     return _logger;
 140 }
 141
 142
 143 void Quassel::registerQuitHandler(QuitHandler handler)
 144 {
 145     instance()->_quitHandlers.emplace_back(std::move(handler));
 146 }
 147
 148 void Quassel::quit()
 149 {
 150     if (_quitHandlers.empty()) {
 151         QCoreApplication::quit();
 152     }
 153     else {
 154         for (auto &&handler : _quitHandlers) {
 155             handler();
 156         }
 157     }
 158 }
 159
 160
 161 void Quassel::registerReloadHandler(ReloadHandler handler)
 162 {
 163     instance()->_reloadHandlers.emplace_back(std::move(handler));
 164 }
 165
 166
 167 bool Quassel::reloadConfig()
 168 {
 169     bool result{true};
 170     for (auto &&handler : _reloadHandlers) {
 171         result = result && handler();
 172     }
 173     return result;
 174 }
 175
 176
 177 //! Register our custom types with Qt's Meta Object System.
 178 /**  This makes them available for QVariant and in signals/slots, among other things.
 179 *
 180 */
 181 void Quassel::registerMetaTypes()
 182 {
 183     // Complex types
 184     qRegisterMetaType<Message>("Message");
 185     qRegisterMetaType<BufferInfo>("BufferInfo");
 186     qRegisterMetaType<NetworkInfo>("NetworkInfo");
 187     qRegisterMetaType<Network::Server>("Network::Server");
 188     qRegisterMetaType<Identity>("Identity");
 189
 190     qRegisterMetaTypeStreamOperators<Message>("Message");
 191     qRegisterMetaTypeStreamOperators<BufferInfo>("BufferInfo");
 192     qRegisterMetaTypeStreamOperators<NetworkInfo>("NetworkInfo");
 193     qRegisterMetaTypeStreamOperators<Network::Server>("Network::Server");
 194     qRegisterMetaTypeStreamOperators<Identity>("Identity");
 195
 196     qRegisterMetaType<IdentityId>("IdentityId");
 197     qRegisterMetaType<BufferId>("BufferId");
 198     qRegisterMetaType<NetworkId>("NetworkId");
 199     qRegisterMetaType<UserId>("UserId");
 200     qRegisterMetaType<AccountId>("AccountId");
 201     qRegisterMetaType<MsgId>("MsgId");
 202
 203     qRegisterMetaType<QHostAddress>("QHostAddress");
 204     qRegisterMetaTypeStreamOperators<QHostAddress>("QHostAddress");
 205     qRegisterMetaType<QUuid>("QUuid");
 206     qRegisterMetaTypeStreamOperators<QUuid>("QUuid");
 207
 208     qRegisterMetaTypeStreamOperators<IdentityId>("IdentityId");
 209     qRegisterMetaTypeStreamOperators<BufferId>("BufferId");
 210     qRegisterMetaTypeStreamOperators<NetworkId>("NetworkId");
 211     qRegisterMetaTypeStreamOperators<UserId>("UserId");
 212     qRegisterMetaTypeStreamOperators<AccountId>("AccountId");
 213     qRegisterMetaTypeStreamOperators<MsgId>("MsgId");
 214
 215     qRegisterMetaType<Protocol::SessionState>("Protocol::SessionState");
 216     qRegisterMetaType<PeerPtr>("PeerPtr");
 217     qRegisterMetaTypeStreamOperators<PeerPtr>("PeerPtr");
 218
 219     // Versions of Qt prior to 4.7 didn't define QVariant as a meta type
 220     if (!QMetaType::type("QVariant")) {
 221         qRegisterMetaType<QVariant>("QVariant");
 222         qRegisterMetaTypeStreamOperators<QVariant>("QVariant");
 223     }
 224 }
 225
 226
 227 void Quassel::setupEnvironment()
 228 {
 229     // On modern Linux systems, XDG_DATA_DIRS contains a list of directories containing application data. This
 230     // is, for example, used by Qt for finding icons and other things. In case Quassel is installed in a non-standard
 231     // prefix (or run from the build directory), it makes sense to add this to XDG_DATA_DIRS so we don't have to
 232     // hack extra search paths into various places.
 233 #ifdef Q_OS_UNIX
 234     QString xdgDataVar = QFile::decodeName(qgetenv("XDG_DATA_DIRS"));
 235     if (xdgDataVar.isEmpty())
 236         xdgDataVar = QLatin1String("/usr/local/share:/usr/share"); // sane defaults
 237
 238     QStringList xdgDirs = xdgDataVar.split(QLatin1Char(':'), QString::SkipEmptyParts);
 239
 240     // Add our install prefix (if we're not in a bindir, this just adds the current workdir)
 241     QString appDir = QCoreApplication::applicationDirPath();
 242     int binpos = appDir.lastIndexOf("/bin");
 243     if (binpos >= 0) {
 244         appDir.replace(binpos, 4, "/share");
 245         xdgDirs.append(appDir);
 246         // Also append apps/quassel, this is only for QIconLoader to find icons there
 247         xdgDirs.append(appDir + "/apps/quassel");
 248     } else
 249         xdgDirs.append(appDir);  // build directory is always the last fallback
 250
 251     xdgDirs.removeDuplicates();
 252
 253     qputenv("XDG_DATA_DIRS", QFile::encodeName(xdgDirs.join(":")));
 254 #endif
 255 }
 256
 257
 258 void Quassel::setupBuildInfo()
 259 {
 260     BuildInfo buildInfo;
 261     buildInfo.applicationName = "quassel";
 262     buildInfo.coreApplicationName = "quasselcore";
 263     buildInfo.clientApplicationName = "quasselclient";
 264     buildInfo.organizationName = "Quassel Project";
 265     buildInfo.organizationDomain = "quassel-irc.org";
 266
 267     buildInfo.protocolVersion = 10; // FIXME: deprecated, will be removed
 268
 269     buildInfo.baseVersion = QUASSEL_VERSION_STRING;
 270     buildInfo.generatedVersion = GIT_DESCRIBE;
 271
 272     // Check if we got a commit hash
 273     if (!QString(GIT_HEAD).isEmpty()) {
 274         buildInfo.commitHash = GIT_HEAD;
 275         // Set to Unix epoch, wrapped as a string for backwards-compatibility
 276         buildInfo.commitDate = QString::number(GIT_COMMIT_DATE);
 277     }
 278     else if (!QString(DIST_HASH).contains("Format")) {
 279         buildInfo.commitHash = DIST_HASH;
 280         // Leave as Unix epoch if set as Unix epoch, but don't force this for
 281         // backwards-compatibility with existing packaging/release tools that might set strings.
 282         buildInfo.commitDate = QString(DIST_DATE);
 283     }
 284
 285     // create a nice version string
 286     if (buildInfo.generatedVersion.isEmpty()) {
 287         if (!buildInfo.commitHash.isEmpty()) {
 288             // dist version
 289             buildInfo.plainVersionString = QString{"v%1 (dist-%2)"}
 290                                                .arg(buildInfo.baseVersion)
 291                                                .arg(buildInfo.commitHash.left(7));
 292             buildInfo.fancyVersionString = QString{"v%1 (dist-<a href=\"https://github.com/quassel/quassel/commit/%3\">%2</a>)"}
 293                                                .arg(buildInfo.baseVersion)
 294                                                .arg(buildInfo.commitHash.left(7))
 295                                                .arg(buildInfo.commitHash);
 296         }
 297         else {
 298             // we only have a base version :(
 299             buildInfo.plainVersionString = QString{"v%1 (unknown revision)"}.arg(buildInfo.baseVersion);
 300         }
 301     }
 302     else {
 303         // analyze what we got from git-describe
 304         static const QRegExp rx{"(.*)-(\\d+)-g([0-9a-f]+)(-dirty)?$"};
 305         if (rx.exactMatch(buildInfo.generatedVersion)) {
 306             QString distance = rx.cap(2) == "0" ? QString{} : QString{"%1+%2 "}.arg(rx.cap(1), rx.cap(2));
 307             buildInfo.plainVersionString = QString{"v%1 (%2git-%3%4)"}.arg(buildInfo.baseVersion, distance, rx.cap(3), rx.cap(4));
 308             if (!buildInfo.commitHash.isEmpty()) {
 309                 buildInfo.fancyVersionString = QString{"v%1 (%2git-<a href=\"https://github.com/quassel/quassel/commit/%5\">%3</a>%4)"}
 310                                                    .arg(buildInfo.baseVersion, distance, rx.cap(3), rx.cap(4), buildInfo.commitHash);
 311             }
 312         }
 313         else {
 314             buildInfo.plainVersionString = QString{"v%1 (invalid revision)"}.arg(buildInfo.baseVersion);
 315         }
 316     }
 317     if (buildInfo.fancyVersionString.isEmpty()) {
 318         buildInfo.fancyVersionString = buildInfo.plainVersionString;
 319     }
 320
 321     instance()->_buildInfo = std::move(buildInfo);
 322 }
 323
 324
 325 const Quassel::BuildInfo &Quassel::buildInfo()
 326 {
 327     return instance()->_buildInfo;
 328 }
 329
 330
 331 //! Signal handler for graceful shutdown.
 332 //! @todo: Ensure this doesn't use unsafe methods (it does currently)
 333 //!        cf. QSocketNotifier, UnixSignalWatcher
 334 void Quassel::handleSignal(int sig)
 335 {
 336     switch (sig) {
 337     case SIGTERM:
 338     case SIGINT:
 339         qWarning("%s", qPrintable(QString("Caught signal %1 - exiting.").arg(sig)));
 340         instance()->quit();
 341         break;
 342 #ifndef Q_OS_WIN
 343 // Windows does not support SIGHUP
 344     case SIGHUP:
 345         // Most applications use this as the 'configuration reload' command, e.g. nginx uses it for
 346         // graceful reloading of processes.
 347         quInfo() << "Caught signal" << SIGHUP << "- reloading configuration";
 348         if (instance()->reloadConfig()) {
 349             quInfo() << "Successfully reloaded configuration";
 350         }
 351         break;
 352 #endif
 353     case SIGABRT:
 354     case SIGSEGV:
 355 #ifndef Q_OS_WIN
 356     case SIGBUS:
 357 #endif
 358         instance()->logBacktrace(instance()->coreDumpFileName());
 359         exit(EXIT_FAILURE);
 360     default:
 361         ;
 362     }
 363 }
 364
 365
 366 void Quassel::disableCrashHandler()
 367 {
 368     instance()->_handleCrashes = false;
 369 }
 370
 371
 372 Quassel::RunMode Quassel::runMode() {
 373     return instance()->_runMode;
 374 }
 375
 376
 377 void Quassel::setRunMode(RunMode runMode)
 378 {
 379     instance()->_runMode = runMode;
 380 }
 381
 382
 383 void Quassel::setCliParser(std::shared_ptr<AbstractCliParser> parser)
 384 {
 385     instance()->_cliParser = std::move(parser);
 386 }
 387
 388
 389 QString Quassel::optionValue(const QString &key)
 390 {
 391     return instance()->_cliParser ? instance()->_cliParser->value(key) : QString{};
 392 }
 393
 394
 395 bool Quassel::isOptionSet(const QString &key)
 396 {
 397     return instance()->_cliParser ? instance()->_cliParser->isSet(key) : false;
 398 }
 399
 400
 401 const QString &Quassel::coreDumpFileName()
 402 {
 403     if (_coreDumpFileName.isEmpty()) {
 404         QDir configDir(configDirPath());
 405         _coreDumpFileName = configDir.absoluteFilePath(QString("Quassel-Crash-%1.log").arg(QDateTime::currentDateTime().toString("yyyyMMdd-hhmm")));
 406         QFile dumpFile(_coreDumpFileName);
 407         dumpFile.open(QIODevice::Append);
 408         QTextStream dumpStream(&dumpFile);
 409         dumpStream << "Quassel IRC: " << _buildInfo.baseVersion << ' ' << _buildInfo.commitHash << '\n';
 410         qDebug() << "Quassel IRC: " << _buildInfo.baseVersion << ' ' << _buildInfo.commitHash;
 411         dumpStream.flush();
 412         dumpFile.close();
 413     }
 414     return _coreDumpFileName;
 415 }
 416
 417
 418 QString Quassel::configDirPath()
 419 {
 420     if (!instance()->_configDirPath.isEmpty())
 421         return instance()->_configDirPath;
 422
 423     QString path;
 424     if (isOptionSet("datadir")) {
 425         qWarning() << "Obsolete option --datadir used!";
 426         path = Quassel::optionValue("datadir");
 427     }
 428     else if (isOptionSet("configdir")) {
 429         path = Quassel::optionValue("configdir");
 430     }
 431     else {
 432 #ifdef Q_OS_MAC
 433         // On Mac, the path is always the same
 434         path = QDir::homePath() + "/Library/Application Support/Quassel/";
 435 #else
 436         // We abuse QSettings to find us a sensible path on the other platforms
 437 #  ifdef Q_OS_WIN
 438         // don't use the registry
 439         QSettings::Format format = QSettings::IniFormat;
 440 #  else
 441         QSettings::Format format = QSettings::NativeFormat;
 442 #  endif
 443         QSettings s(format, QSettings::UserScope, QCoreApplication::organizationDomain(), buildInfo().applicationName);
 444         QFileInfo fileInfo(s.fileName());
 445         path = fileInfo.dir().absolutePath();
 446 #endif /* Q_OS_MAC */
 447     }
 448
 449     path = QFileInfo{path}.absoluteFilePath();
 450
 451     if (!path.endsWith(QDir::separator()) && !path.endsWith('/'))
 452         path += QDir::separator();
 453
 454     QDir qDir{path};
 455     if (!qDir.exists(path)) {
 456         if (!qDir.mkpath(path)) {
 457             qCritical() << "Unable to create Quassel config directory:" << qPrintable(qDir.absolutePath());
 458             return {};
 459         }
 460     }
 461
 462     instance()->_configDirPath = path;
 463     return path;
 464 }
 465
 466
 467 void Quassel::setDataDirPaths(const QStringList &paths) {
 468     instance()->_dataDirPaths = paths;
 469 }
 470
 471
 472 QStringList Quassel::dataDirPaths()
 473 {
 474     return instance()->_dataDirPaths;
 475 }
 476
 477
 478 QStringList Quassel::findDataDirPaths()
 479 {
 480     // TODO Qt5
 481     // We don't use QStandardPaths for now, as we still need to provide fallbacks for Qt4 and
 482     // want to stay consistent.
 483
 484     QStringList dataDirNames;
 485 #ifdef Q_OS_WIN
 486     dataDirNames << qgetenv("APPDATA") + QCoreApplication::organizationDomain() + "/share/apps/quassel/"
 487                  << qgetenv("APPDATA") + QCoreApplication::organizationDomain()
 488                  << QCoreApplication::applicationDirPath();
 489 #elif defined Q_OS_MAC
 490     dataDirNames << QDir::homePath() + "/Library/Application Support/Quassel/"
 491                  << QCoreApplication::applicationDirPath();
 492 #else
 493     // Linux et al
 494
 495     // XDG_DATA_HOME is the location for users to override system-installed files, usually in .local/share
 496     // This should thus come first.
 497     QString xdgDataHome = QFile::decodeName(qgetenv("XDG_DATA_HOME"));
 498     if (xdgDataHome.isEmpty())
 499         xdgDataHome = QDir::homePath() + QLatin1String("/.local/share");
 500     dataDirNames << xdgDataHome;
 501
 502     // Now whatever is configured through XDG_DATA_DIRS
 503     QString xdgDataDirs = QFile::decodeName(qgetenv("XDG_DATA_DIRS"));
 504     if (xdgDataDirs.isEmpty())
 505         dataDirNames << "/usr/local/share" << "/usr/share";
 506     else
 507         dataDirNames << xdgDataDirs.split(':', QString::SkipEmptyParts);
 508
 509     // Just in case, also check our install prefix
 510     dataDirNames << QCoreApplication::applicationDirPath() + "/../share";
 511
 512     // Normalize and append our application name
 513     for (int i = 0; i < dataDirNames.count(); i++)
 514         dataDirNames[i] = QDir::cleanPath(dataDirNames.at(i)) + "/quassel/";
 515
 516 #endif
 517
 518     // Add resource path and workdir just in case.
 519     // Workdir should have precedence
 520     dataDirNames.prepend(QCoreApplication::applicationDirPath() + "/data/");
 521     dataDirNames.append(":/data/");
 522
 523     // Append trailing '/' and check for existence
 524     auto iter = dataDirNames.begin();
 525     while (iter != dataDirNames.end()) {
 526         if (!iter->endsWith(QDir::separator()) && !iter->endsWith('/'))
 527             iter->append(QDir::separator());
 528         if (!QFile::exists(*iter))
 529             iter = dataDirNames.erase(iter);
 530         else
 531             ++iter;
 532     }
 533
 534     dataDirNames.removeDuplicates();
 535
 536     return dataDirNames;
 537 }
 538
 539
 540 QString Quassel::findDataFilePath(const QString &fileName)
 541 {
 542     QStringList dataDirs = dataDirPaths();
 543     foreach(QString dataDir, dataDirs) {
 544         QString path = dataDir + fileName;
 545         if (QFile::exists(path))
 546             return path;
 547     }
 548     return QString();
 549 }
 550
 551
 552 QStringList Quassel::scriptDirPaths()
 553 {
 554     QStringList res(configDirPath() + "scripts/");
 555     foreach(QString path, dataDirPaths())
 556     res << path + "scripts/";
 557     return res;
 558 }
 559
 560
 561 QString Quassel::translationDirPath()
 562 {
 563     if (instance()->_translationDirPath.isEmpty()) {
 564         // We support only one translation dir; fallback mechanisms wouldn't work else.
 565         // This means that if we have a $data/translations dir, the internal :/i18n resource won't be considered.
 566         foreach(const QString &dir, dataDirPaths()) {
 567             if (QFile::exists(dir + "translations/")) {
 568                 instance()->_translationDirPath = dir + "translations/";
 569                 break;
 570             }
 571         }
 572         if (instance()->_translationDirPath.isEmpty())
 573             instance()->_translationDirPath = ":/i18n/";
 574     }
 575     return instance()->_translationDirPath;
 576 }
 577
 578
 579 void Quassel::loadTranslation(const QLocale &locale)
 580 {
 581     QTranslator *qtTranslator = QCoreApplication::instance()->findChild<QTranslator *>("QtTr");
 582     QTranslator *quasselTranslator = QCoreApplication::instance()->findChild<QTranslator *>("QuasselTr");
 583
 584     if (qtTranslator)
 585         qApp->removeTranslator(qtTranslator);
 586     if (quasselTranslator)
 587         qApp->removeTranslator(quasselTranslator);
 588
 589     // We use QLocale::C to indicate that we don't want a translation
 590     if (locale.language() == QLocale::C)
 591         return;
 592
 593     qtTranslator = new QTranslator(qApp);
 594     qtTranslator->setObjectName("QtTr");
 595     qApp->installTranslator(qtTranslator);
 596
 597     quasselTranslator = new QTranslator(qApp);
 598     quasselTranslator->setObjectName("QuasselTr");
 599     qApp->installTranslator(quasselTranslator);
 600
 601 #if QT_VERSION >= 0x040800 && !defined Q_OS_MAC
 602     bool success = qtTranslator->load(locale, QString("qt_"), translationDirPath());
 603     if (!success)
 604         qtTranslator->load(locale, QString("qt_"), QLibraryInfo::location(QLibraryInfo::TranslationsPath));
 605     quasselTranslator->load(locale, QString(""), translationDirPath());
 606 #else
 607     bool success = qtTranslator->load(QString("qt_%1").arg(locale.name()), translationDirPath());
 608     if (!success)
 609         qtTranslator->load(QString("qt_%1").arg(locale.name()), QLibraryInfo::location(QLibraryInfo::TranslationsPath));
 610     quasselTranslator->load(QString("%1").arg(locale.name()), translationDirPath());
 611 #endif
 612 }
 613
 614
 615 // ---- Quassel::Features ---------------------------------------------------------------------------------------------
 616
 617 Quassel::Features::Features()
 618 {
 619     QStringList features;
 620
 621     // TODO Qt5: Use QMetaEnum::fromType()
 622     auto featureEnum = Quassel::staticMetaObject.enumerator(Quassel::staticMetaObject.indexOfEnumerator("Feature"));
 623     _features.resize(featureEnum.keyCount(), true);  // enable all known features to true
 624 }
 625
 626
 627 Quassel::Features::Features(const QStringList &features, LegacyFeatures legacyFeatures)
 628 {
 629     // TODO Qt5: Use QMetaEnum::fromType()
 630     auto featureEnum = Quassel::staticMetaObject.enumerator(Quassel::staticMetaObject.indexOfEnumerator("Feature"));
 631     _features.resize(featureEnum.keyCount(), false);
 632
 633     for (auto &&feature : features) {
 634         int i = featureEnum.keyToValue(qPrintable(feature));
 635         if (i >= 0) {
 636             _features[i] = true;
 637         }
 638         else {
 639             _unknownFeatures << feature;
 640         }
 641     }
 642
 643     if (legacyFeatures) {
 644         // TODO Qt5: Use QMetaEnum::fromType()
 645         auto legacyFeatureEnum = Quassel::staticMetaObject.enumerator(Quassel::staticMetaObject.indexOfEnumerator("LegacyFeature"));
 646         for (quint32 mask = 0x0001; mask <= 0x8000; mask <<=1) {
 647             if (static_cast<quint32>(legacyFeatures) & mask) {
 648                 int i = featureEnum.keyToValue(legacyFeatureEnum.valueToKey(mask));
 649                 if (i >= 0) {
 650                     _features[i] = true;
 651                 }
 652             }
 653         }
 654     }
 655 }
 656
 657
 658 bool Quassel::Features::isEnabled(Feature feature) const
 659 {
 660     size_t i = static_cast<size_t>(feature);
 661     return i < _features.size() ? _features[i] : false;
 662 }
 663
 664
 665 QStringList Quassel::Features::toStringList(bool enabled) const
 666 {
 667     // Check if any feature is enabled
 668     if (!enabled && std::all_of(_features.cbegin(), _features.cend(), [](bool feature) { return !feature; })) {
 669         return QStringList{} << "NoFeatures";
 670     }
 671
 672     QStringList result;
 673
 674     // TODO Qt5: Use QMetaEnum::fromType()
 675     auto featureEnum = Quassel::staticMetaObject.enumerator(Quassel::staticMetaObject.indexOfEnumerator("Feature"));
 676     for (quint32 i = 0; i < _features.size(); ++i) {
 677         if (_features[i] == enabled) {
 678             result << featureEnum.key(i);
 679         }
 680     }
 681     return result;
 682 }
 683
 684
 685 Quassel::LegacyFeatures Quassel::Features::toLegacyFeatures() const
 686 {
 687     // TODO Qt5: Use LegacyFeatures (flag operators for enum classes not supported in Qt4)
 688     quint32 result{0};
 689     // TODO Qt5: Use QMetaEnum::fromType()
 690     auto featureEnum = Quassel::staticMetaObject.enumerator(Quassel::staticMetaObject.indexOfEnumerator("Feature"));
 691     auto legacyFeatureEnum = Quassel::staticMetaObject.enumerator(Quassel::staticMetaObject.indexOfEnumerator("LegacyFeature"));
 692
 693     for (quint32 i = 0; i < _features.size(); ++i) {
 694         if (_features[i]) {
 695             int v = legacyFeatureEnum.keyToValue(featureEnum.key(i));
 696             if (v >= 0) {
 697                 result |= v;
 698             }
 699         }
 700     }
 701     return static_cast<LegacyFeatures>(result);
 702 }
 703
 704
 705 QStringList Quassel::Features::unknownFeatures() const
 706 {
 707     return _unknownFeatures;
 708 }