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 #include "version.h"
  48
  49 #ifndef Q_OS_WIN
  50 #    include "posixsignalwatcher.h"
  51 #else
  52 #    include "windowssignalwatcher.h"
  53 #endif
  54
  55 Quassel::Quassel()
  56     : Singleton<Quassel>{this}
  57     , _logger{new Logger{this}}
  58 {
  59 #ifdef EMBED_DATA
  60     Q_INIT_RESOURCE(i18n);
  61 #endif
  62 }
  63
  64
  65 void Quassel::init(RunMode runMode)
  66 {
  67     _runMode = runMode;
  68
  69     qsrand(QTime(0, 0, 0).secsTo(QTime::currentTime()));
  70
  71     setupSignalHandling();
  72     setupEnvironment();
  73     registerMetaTypes();
  74
  75     // Initial translation (may be overridden in UI settings)
  76     loadTranslation(QLocale::system());
  77
  78     setupCliParser();
  79
  80     // Don't keep a debug log on the core
  81     logger()->setup(runMode != RunMode::CoreOnly);
  82
  83     Network::setDefaultCodecForServer("UTF-8");
  84     Network::setDefaultCodecForEncoding("UTF-8");
  85     Network::setDefaultCodecForDecoding("ISO-8859-15");
  86 }
  87
  88
  89 Logger *Quassel::logger() const
  90 {
  91     return _logger;
  92 }
  93
  94
  95 void Quassel::registerQuitHandler(QuitHandler handler)
  96 {
  97     instance()->_quitHandlers.emplace_back(std::move(handler));
  98 }
  99
 100 void Quassel::quit()
 101 {
 102     // Protect against multiple invocations (e.g. triggered by MainWin::closeEvent())
 103     if (!_quitting) {
 104         _quitting = true;
 105         quInfo() << "Quitting...";
 106         if (_quitHandlers.empty()) {
 107             QCoreApplication::quit();
 108         }
 109         else {
 110             // Note: We expect one of the registered handlers to call QCoreApplication::quit()
 111             for (auto &&handler : _quitHandlers) {
 112                 handler();
 113             }
 114         }
 115     }
 116 }
 117
 118
 119 void Quassel::registerReloadHandler(ReloadHandler handler)
 120 {
 121     instance()->_reloadHandlers.emplace_back(std::move(handler));
 122 }
 123
 124
 125 bool Quassel::reloadConfig()
 126 {
 127     bool result{true};
 128     for (auto &&handler : _reloadHandlers) {
 129         result = result && handler();
 130     }
 131     return result;
 132 }
 133
 134
 135 //! Register our custom types with Qt's Meta Object System.
 136 /**  This makes them available for QVariant and in signals/slots, among other things.
 137 *
 138 */
 139 void Quassel::registerMetaTypes()
 140 {
 141     // Complex types
 142     qRegisterMetaType<Message>("Message");
 143     qRegisterMetaType<BufferInfo>("BufferInfo");
 144     qRegisterMetaType<NetworkInfo>("NetworkInfo");
 145     qRegisterMetaType<Network::Server>("Network::Server");
 146     qRegisterMetaType<Identity>("Identity");
 147
 148     qRegisterMetaTypeStreamOperators<Message>("Message");
 149     qRegisterMetaTypeStreamOperators<BufferInfo>("BufferInfo");
 150     qRegisterMetaTypeStreamOperators<NetworkInfo>("NetworkInfo");
 151     qRegisterMetaTypeStreamOperators<Network::Server>("Network::Server");
 152     qRegisterMetaTypeStreamOperators<Identity>("Identity");
 153
 154     qRegisterMetaType<IdentityId>("IdentityId");
 155     qRegisterMetaType<BufferId>("BufferId");
 156     qRegisterMetaType<NetworkId>("NetworkId");
 157     qRegisterMetaType<UserId>("UserId");
 158     qRegisterMetaType<AccountId>("AccountId");
 159     qRegisterMetaType<MsgId>("MsgId");
 160
 161     qRegisterMetaType<QHostAddress>("QHostAddress");
 162     qRegisterMetaTypeStreamOperators<QHostAddress>("QHostAddress");
 163     qRegisterMetaType<QUuid>("QUuid");
 164     qRegisterMetaTypeStreamOperators<QUuid>("QUuid");
 165
 166     qRegisterMetaTypeStreamOperators<IdentityId>("IdentityId");
 167     qRegisterMetaTypeStreamOperators<BufferId>("BufferId");
 168     qRegisterMetaTypeStreamOperators<NetworkId>("NetworkId");
 169     qRegisterMetaTypeStreamOperators<UserId>("UserId");
 170     qRegisterMetaTypeStreamOperators<AccountId>("AccountId");
 171     qRegisterMetaTypeStreamOperators<MsgId>("MsgId");
 172
 173     qRegisterMetaType<Protocol::SessionState>("Protocol::SessionState");
 174     qRegisterMetaType<PeerPtr>("PeerPtr");
 175     qRegisterMetaTypeStreamOperators<PeerPtr>("PeerPtr");
 176
 177     // Versions of Qt prior to 4.7 didn't define QVariant as a meta type
 178     if (!QMetaType::type("QVariant")) {
 179         qRegisterMetaType<QVariant>("QVariant");
 180         qRegisterMetaTypeStreamOperators<QVariant>("QVariant");
 181     }
 182 }
 183
 184
 185 void Quassel::setupEnvironment()
 186 {
 187     // On modern Linux systems, XDG_DATA_DIRS contains a list of directories containing application data. This
 188     // is, for example, used by Qt for finding icons and other things. In case Quassel is installed in a non-standard
 189     // prefix (or run from the build directory), it makes sense to add this to XDG_DATA_DIRS so we don't have to
 190     // hack extra search paths into various places.
 191 #ifdef Q_OS_UNIX
 192     QString xdgDataVar = QFile::decodeName(qgetenv("XDG_DATA_DIRS"));
 193     if (xdgDataVar.isEmpty())
 194         xdgDataVar = QLatin1String("/usr/local/share:/usr/share"); // sane defaults
 195
 196     QStringList xdgDirs = xdgDataVar.split(QLatin1Char(':'), QString::SkipEmptyParts);
 197
 198     // Add our install prefix (if we're not in a bindir, this just adds the current workdir)
 199     QString appDir = QCoreApplication::applicationDirPath();
 200     int binpos = appDir.lastIndexOf("/bin");
 201     if (binpos >= 0) {
 202         appDir.replace(binpos, 4, "/share");
 203         xdgDirs.append(appDir);
 204         // Also append apps/quassel, this is only for QIconLoader to find icons there
 205         xdgDirs.append(appDir + "/apps/quassel");
 206     } else
 207         xdgDirs.append(appDir);  // build directory is always the last fallback
 208
 209     xdgDirs.removeDuplicates();
 210
 211     qputenv("XDG_DATA_DIRS", QFile::encodeName(xdgDirs.join(":")));
 212 #endif
 213 }
 214
 215
 216 void Quassel::setupBuildInfo()
 217 {
 218     BuildInfo buildInfo;
 219     buildInfo.applicationName = "quassel";
 220     buildInfo.coreApplicationName = "quasselcore";
 221     buildInfo.clientApplicationName = "quasselclient";
 222     buildInfo.organizationName = "Quassel Project";
 223     buildInfo.organizationDomain = "quassel-irc.org";
 224
 225     buildInfo.protocolVersion = 10; // FIXME: deprecated, will be removed
 226
 227     buildInfo.baseVersion = QUASSEL_VERSION_STRING;
 228     buildInfo.generatedVersion = GIT_DESCRIBE;
 229
 230     // Check if we got a commit hash
 231     if (!QString(GIT_HEAD).isEmpty()) {
 232         buildInfo.commitHash = GIT_HEAD;
 233         // Set to Unix epoch, wrapped as a string for backwards-compatibility
 234         buildInfo.commitDate = QString::number(GIT_COMMIT_DATE);
 235     }
 236     else if (!QString(DIST_HASH).contains("Format")) {
 237         buildInfo.commitHash = DIST_HASH;
 238         // Leave as Unix epoch if set as Unix epoch, but don't force this for
 239         // backwards-compatibility with existing packaging/release tools that might set strings.
 240         buildInfo.commitDate = QString(DIST_DATE);
 241     }
 242
 243     // create a nice version string
 244     if (buildInfo.generatedVersion.isEmpty()) {
 245         if (!buildInfo.commitHash.isEmpty()) {
 246             // dist version
 247             buildInfo.plainVersionString = QString{"v%1 (dist-%2)"}
 248                                                .arg(buildInfo.baseVersion)
 249                                                .arg(buildInfo.commitHash.left(7));
 250             buildInfo.fancyVersionString = QString{"v%1 (dist-<a href=\"https://github.com/quassel/quassel/commit/%3\">%2</a>)"}
 251                                                .arg(buildInfo.baseVersion)
 252                                                .arg(buildInfo.commitHash.left(7))
 253                                                .arg(buildInfo.commitHash);
 254         }
 255         else {
 256             // we only have a base version :(
 257             buildInfo.plainVersionString = QString{"v%1 (unknown revision)"}.arg(buildInfo.baseVersion);
 258         }
 259     }
 260     else {
 261         // analyze what we got from git-describe
 262         static const QRegExp rx{"(.*)-(\\d+)-g([0-9a-f]+)(-dirty)?$"};
 263         if (rx.exactMatch(buildInfo.generatedVersion)) {
 264             QString distance = rx.cap(2) == "0" ? QString{} : QString{"%1+%2 "}.arg(rx.cap(1), rx.cap(2));
 265             buildInfo.plainVersionString = QString{"v%1 (%2git-%3%4)"}.arg(buildInfo.baseVersion, distance, rx.cap(3), rx.cap(4));
 266             if (!buildInfo.commitHash.isEmpty()) {
 267                 buildInfo.fancyVersionString = QString{"v%1 (%2git-<a href=\"https://github.com/quassel/quassel/commit/%5\">%3</a>%4)"}
 268                                                    .arg(buildInfo.baseVersion, distance, rx.cap(3), rx.cap(4), buildInfo.commitHash);
 269             }
 270         }
 271         else {
 272             buildInfo.plainVersionString = QString{"v%1 (invalid revision)"}.arg(buildInfo.baseVersion);
 273         }
 274     }
 275     if (buildInfo.fancyVersionString.isEmpty()) {
 276         buildInfo.fancyVersionString = buildInfo.plainVersionString;
 277     }
 278
 279     instance()->_buildInfo = std::move(buildInfo);
 280 }
 281
 282
 283 const Quassel::BuildInfo &Quassel::buildInfo()
 284 {
 285     return instance()->_buildInfo;
 286 }
 287
 288
 289 void Quassel::setupSignalHandling()
 290 {
 291 #ifndef Q_OS_WIN
 292     _signalWatcher = new PosixSignalWatcher(this);
 293 #else
 294     _signalWatcher = new WindowsSignalWatcher(this);
 295 #endif
 296     connect(_signalWatcher, SIGNAL(handleSignal(AbstractSignalWatcher::Action)), this, SLOT(handleSignal(AbstractSignalWatcher::Action)));
 297 }
 298
 299
 300 void Quassel::handleSignal(AbstractSignalWatcher::Action action)
 301 {
 302     switch (action) {
 303     case AbstractSignalWatcher::Action::Reload:
 304         // Most applications use this as the 'configuration reload' command, e.g. nginx uses it for graceful reloading of processes.
 305         if (!_reloadHandlers.empty()) {
 306             quInfo() << "Reloading configuration";
 307             if (reloadConfig()) {
 308                 quInfo() << "Successfully reloaded configuration";
 309             }
 310         }
 311         break;
 312     case AbstractSignalWatcher::Action::Terminate:
 313         if (!_quitting) {
 314             quit();
 315         }
 316         else {
 317             quInfo() << "Already shutting down, ignoring signal";
 318         }
 319         break;
 320     case AbstractSignalWatcher::Action::HandleCrash:
 321         logBacktrace(instance()->coreDumpFileName());
 322         exit(EXIT_FAILURE);
 323     }
 324 }
 325
 326
 327 Quassel::RunMode Quassel::runMode() {
 328     return instance()->_runMode;
 329 }
 330
 331
 332 void Quassel::setupCliParser()
 333 {
 334     QList<QCommandLineOption> options;
 335
 336     // General options
 337     /// @todo Bring back --datadir to specify the database location independent of config
 338     if (runMode() == RunMode::ClientOnly) {
 339         options += {{"c", "configdir"}, tr("Specify the directory holding the client configuration."), tr("path")};
 340     }
 341     else {
 342         options += {{"c", "configdir"}, tr("Specify the directory holding configuration files, the SQlite database and the SSL certificate."), tr("path")};
 343     }
 344
 345     // Client options
 346     if (runMode() != RunMode::CoreOnly) {
 347         options += {
 348             {"icontheme", tr("Override the system icon theme ('breeze' is recommended)."), tr("theme")},
 349             {"qss", tr("Load a custom application stylesheet."), tr("file.qss")},
 350             {"hidewindow", tr("Start the client minimized to the system tray.")},
 351         };
 352     }
 353
 354     // Core options
 355     if (runMode() != RunMode::ClientOnly) {
 356         options += {
 357             {"listen", tr("The address(es) quasselcore will listen on."), tr("<address>[,<address>[,...]]"), "::,0.0.0.0"},
 358             {{"p", "port"}, tr("The port quasselcore will listen at."), tr("port"), "4242"},
 359             {{"n", "norestore"}, tr("Don't restore last core's state.")},
 360             {"config-from-environment", tr("Load configuration from environment variables.")},
 361             {"select-backend", tr("Switch storage backend (migrating data if possible)."), tr("backendidentifier")},
 362             {"select-authenticator", tr("Select authentication backend."), tr("authidentifier")},
 363             {"add-user", tr("Starts an interactive session to add a new core user.")},
 364             {"change-userpass", tr("Starts an interactive session to change the password of the user identified by <username>."), tr("username")},
 365             {"strict-ident", tr("Use users' quasselcore username as ident reply. Ignores each user's configured ident setting.")},
 366             {"ident-daemon", tr("Enable internal ident daemon.")},
 367             {"ident-port", tr("The port quasselcore will listen at for ident requests. Only meaningful with --ident-daemon."), tr("port"), "10113"},
 368             {"oidentd", tr("Enable oidentd integration. In most cases you should also enable --strict-ident.")},
 369             {"oidentd-conffile", tr("Set path to oidentd configuration file."), tr("file")},
 370 #ifdef HAVE_SSL
 371             {"require-ssl", tr("Require SSL for remote (non-loopback) client connections.")},
 372             {"ssl-cert", tr("Specify the path to the SSL certificate."), tr("path"), "configdir/quasselCert.pem"},
 373             {"ssl-key", tr("Specify the path to the SSL key."), tr("path"), "ssl-cert-path"},
 374 #endif
 375         };
 376     }
 377
 378     // Logging options
 379     options += {
 380         {{"L", "loglevel"}, tr("Supports one of Debug|Info|Warning|Error; default is Info."), tr("level"), "Info"},
 381         {{"l", "logfile"}, tr("Log to a file."), "path"},
 382 #ifdef HAVE_SYSLOG
 383         {"syslog", tr("Log to syslog.")},
 384 #endif
 385     };
 386
 387     // Debug options
 388     options += {{"d", "debug"}, tr("Enable debug output.")};
 389     if (runMode() != RunMode::CoreOnly) {
 390         options += {
 391             {"debugbufferswitches", tr("Enables debugging for bufferswitches.")},
 392             {"debugmodel", tr("Enables debugging for models.")},
 393         };
 394     }
 395     if (runMode() != RunMode::ClientOnly) {
 396         options += {
 397             {"debug-irc", tr("Enable logging of all raw IRC messages to debug log, including passwords!  In most cases you should also set --loglevel Debug")},
 398             {"debug-irc-id", tr("Limit raw IRC logging to this network ID.  Implies --debug-irc"), tr("database network ID"), "-1"},
 399         };
 400     }
 401
 402     _cliParser.addOptions(options);
 403     _cliParser.addHelpOption();
 404     _cliParser.addVersionOption();
 405     _cliParser.setApplicationDescription(tr("Quassel IRC is a modern, distributed IRC client."));
 406
 407     // This will call ::exit() for --help, --version and in case of errors
 408     _cliParser.process(*QCoreApplication::instance());
 409 }
 410
 411
 412 QString Quassel::optionValue(const QString &key)
 413 {
 414     return instance()->_cliParser.value(key);
 415 }
 416
 417
 418 bool Quassel::isOptionSet(const QString &key)
 419 {
 420     return instance()->_cliParser.isSet(key);
 421 }
 422
 423
 424 const QString &Quassel::coreDumpFileName()
 425 {
 426     if (_coreDumpFileName.isEmpty()) {
 427         QDir configDir(configDirPath());
 428         _coreDumpFileName = configDir.absoluteFilePath(QString("Quassel-Crash-%1.log").arg(QDateTime::currentDateTime().toString("yyyyMMdd-hhmm")));
 429         QFile dumpFile(_coreDumpFileName);
 430         dumpFile.open(QIODevice::Append);
 431         QTextStream dumpStream(&dumpFile);
 432         dumpStream << "Quassel IRC: " << _buildInfo.baseVersion << ' ' << _buildInfo.commitHash << '\n';
 433         qDebug() << "Quassel IRC: " << _buildInfo.baseVersion << ' ' << _buildInfo.commitHash;
 434         dumpStream.flush();
 435         dumpFile.close();
 436     }
 437     return _coreDumpFileName;
 438 }
 439
 440
 441 QString Quassel::configDirPath()
 442 {
 443     if (!instance()->_configDirPath.isEmpty())
 444         return instance()->_configDirPath;
 445
 446     QString path;
 447     if (isOptionSet("configdir")) {
 448         path = Quassel::optionValue("configdir");
 449     }
 450     else {
 451 #ifdef Q_OS_MAC
 452         // On Mac, the path is always the same
 453         path = QDir::homePath() + "/Library/Application Support/Quassel/";
 454 #else
 455         // We abuse QSettings to find us a sensible path on the other platforms
 456 #  ifdef Q_OS_WIN
 457         // don't use the registry
 458         QSettings::Format format = QSettings::IniFormat;
 459 #  else
 460         QSettings::Format format = QSettings::NativeFormat;
 461 #  endif
 462         QSettings s(format, QSettings::UserScope, QCoreApplication::organizationDomain(), buildInfo().applicationName);
 463         QFileInfo fileInfo(s.fileName());
 464         path = fileInfo.dir().absolutePath();
 465 #endif /* Q_OS_MAC */
 466     }
 467
 468     path = QFileInfo{path}.absoluteFilePath();
 469
 470     if (!path.endsWith(QDir::separator()) && !path.endsWith('/'))
 471         path += QDir::separator();
 472
 473     QDir qDir{path};
 474     if (!qDir.exists(path)) {
 475         if (!qDir.mkpath(path)) {
 476             qCritical() << "Unable to create Quassel config directory:" << qPrintable(qDir.absolutePath());
 477             return {};
 478         }
 479     }
 480
 481     instance()->_configDirPath = path;
 482     return path;
 483 }
 484
 485
 486 QStringList Quassel::dataDirPaths()
 487 {
 488     if (!instance()->_dataDirPaths.isEmpty())
 489         return instance()->_dataDirPaths;
 490
 491     // TODO: Migrate to QStandardPaths (will require moving of the sqlite database,
 492     //       or a fallback for it being in the config dir)
 493
 494     QStringList dataDirNames;
 495 #ifdef Q_OS_WIN
 496     dataDirNames << qgetenv("APPDATA") + QCoreApplication::organizationDomain() + "/share/apps/quassel/"
 497                  << qgetenv("APPDATA") + QCoreApplication::organizationDomain()
 498                  << QCoreApplication::applicationDirPath();
 499 #elif defined Q_OS_MAC
 500     dataDirNames << QDir::homePath() + "/Library/Application Support/Quassel/"
 501                  << QCoreApplication::applicationDirPath();
 502 #else
 503     // Linux et al
 504
 505     // XDG_DATA_HOME is the location for users to override system-installed files, usually in .local/share
 506     // This should thus come first.
 507     QString xdgDataHome = QFile::decodeName(qgetenv("XDG_DATA_HOME"));
 508     if (xdgDataHome.isEmpty())
 509         xdgDataHome = QDir::homePath() + QLatin1String("/.local/share");
 510     dataDirNames << xdgDataHome;
 511
 512     // Now whatever is configured through XDG_DATA_DIRS
 513     QString xdgDataDirs = QFile::decodeName(qgetenv("XDG_DATA_DIRS"));
 514     if (xdgDataDirs.isEmpty())
 515         dataDirNames << "/usr/local/share" << "/usr/share";
 516     else
 517         dataDirNames << xdgDataDirs.split(':', QString::SkipEmptyParts);
 518
 519     // Just in case, also check our install prefix
 520     dataDirNames << QCoreApplication::applicationDirPath() + "/../share";
 521
 522     // Normalize and append our application name
 523     for (int i = 0; i < dataDirNames.count(); i++)
 524         dataDirNames[i] = QDir::cleanPath(dataDirNames.at(i)) + "/quassel/";
 525
 526 #endif
 527
 528     // Add resource path and workdir just in case.
 529     // Workdir should have precedence
 530     dataDirNames.prepend(QCoreApplication::applicationDirPath() + "/data/");
 531     dataDirNames.append(":/data/");
 532
 533     // Append trailing '/' and check for existence
 534     auto iter = dataDirNames.begin();
 535     while (iter != dataDirNames.end()) {
 536         if (!iter->endsWith(QDir::separator()) && !iter->endsWith('/'))
 537             iter->append(QDir::separator());
 538         if (!QFile::exists(*iter))
 539             iter = dataDirNames.erase(iter);
 540         else
 541             ++iter;
 542     }
 543
 544     dataDirNames.removeDuplicates();
 545
 546     instance()->_dataDirPaths = dataDirNames;
 547     return dataDirNames;
 548 }
 549
 550
 551 QString Quassel::findDataFilePath(const QString &fileName)
 552 {
 553     QStringList dataDirs = dataDirPaths();
 554     foreach(QString dataDir, dataDirs) {
 555         QString path = dataDir + fileName;
 556         if (QFile::exists(path))
 557             return path;
 558     }
 559     return QString();
 560 }
 561
 562
 563 QStringList Quassel::scriptDirPaths()
 564 {
 565     QStringList res(configDirPath() + "scripts/");
 566     foreach(QString path, dataDirPaths())
 567     res << path + "scripts/";
 568     return res;
 569 }
 570
 571
 572 QString Quassel::translationDirPath()
 573 {
 574     if (instance()->_translationDirPath.isEmpty()) {
 575         // We support only one translation dir; fallback mechanisms wouldn't work else.
 576         // This means that if we have a $data/translations dir, the internal :/i18n resource won't be considered.
 577         foreach(const QString &dir, dataDirPaths()) {
 578             if (QFile::exists(dir + "translations/")) {
 579                 instance()->_translationDirPath = dir + "translations/";
 580                 break;
 581             }
 582         }
 583         if (instance()->_translationDirPath.isEmpty())
 584             instance()->_translationDirPath = ":/i18n/";
 585     }
 586     return instance()->_translationDirPath;
 587 }
 588
 589
 590 void Quassel::loadTranslation(const QLocale &locale)
 591 {
 592     QTranslator *qtTranslator = QCoreApplication::instance()->findChild<QTranslator *>("QtTr");
 593     QTranslator *quasselTranslator = QCoreApplication::instance()->findChild<QTranslator *>("QuasselTr");
 594
 595     if (qtTranslator)
 596         qApp->removeTranslator(qtTranslator);
 597     if (quasselTranslator)
 598         qApp->removeTranslator(quasselTranslator);
 599
 600     // We use QLocale::C to indicate that we don't want a translation
 601     if (locale.language() == QLocale::C)
 602         return;
 603
 604     qtTranslator = new QTranslator(qApp);
 605     qtTranslator->setObjectName("QtTr");
 606
 607     quasselTranslator = new QTranslator(qApp);
 608     quasselTranslator->setObjectName("QuasselTr");
 609
 610 #ifndef Q_OS_MAC
 611     bool success = qtTranslator->load(locale, QString("qt_"), translationDirPath());
 612     if (!success)
 613         qtTranslator->load(locale, QString("qt_"), QLibraryInfo::location(QLibraryInfo::TranslationsPath));
 614     quasselTranslator->load(locale, QString(""), translationDirPath());
 615 #else
 616     bool success = qtTranslator->load(QString("qt_%1").arg(locale.name()), translationDirPath());
 617     if (!success)
 618         qtTranslator->load(QString("qt_%1").arg(locale.name()), QLibraryInfo::location(QLibraryInfo::TranslationsPath));
 619     quasselTranslator->load(QString("%1").arg(locale.name()), translationDirPath());
 620 #endif
 621
 622     qApp->installTranslator(quasselTranslator);
 623     qApp->installTranslator(qtTranslator);
 624 }
 625
 626
 627 // ---- Quassel::Features ---------------------------------------------------------------------------------------------
 628
 629 Quassel::Features::Features()
 630 {
 631     QStringList features;
 632
 633     // TODO Qt5: Use QMetaEnum::fromType()
 634     auto featureEnum = Quassel::staticMetaObject.enumerator(Quassel::staticMetaObject.indexOfEnumerator("Feature"));
 635     _features.resize(featureEnum.keyCount(), true);  // enable all known features to true
 636 }
 637
 638
 639 Quassel::Features::Features(const QStringList &features, LegacyFeatures legacyFeatures)
 640 {
 641     // TODO Qt5: Use QMetaEnum::fromType()
 642     auto featureEnum = Quassel::staticMetaObject.enumerator(Quassel::staticMetaObject.indexOfEnumerator("Feature"));
 643     _features.resize(featureEnum.keyCount(), false);
 644
 645     for (auto &&feature : features) {
 646         int i = featureEnum.keyToValue(qPrintable(feature));
 647         if (i >= 0) {
 648             _features[i] = true;
 649         }
 650         else {
 651             _unknownFeatures << feature;
 652         }
 653     }
 654
 655     if (legacyFeatures) {
 656         // TODO Qt5: Use QMetaEnum::fromType()
 657         auto legacyFeatureEnum = Quassel::staticMetaObject.enumerator(Quassel::staticMetaObject.indexOfEnumerator("LegacyFeature"));
 658         for (quint32 mask = 0x0001; mask <= 0x8000; mask <<=1) {
 659             if (static_cast<quint32>(legacyFeatures) & mask) {
 660                 int i = featureEnum.keyToValue(legacyFeatureEnum.valueToKey(mask));
 661                 if (i >= 0) {
 662                     _features[i] = true;
 663                 }
 664             }
 665         }
 666     }
 667 }
 668
 669
 670 bool Quassel::Features::isEnabled(Feature feature) const
 671 {
 672     size_t i = static_cast<size_t>(feature);
 673     return i < _features.size() ? _features[i] : false;
 674 }
 675
 676
 677 QStringList Quassel::Features::toStringList(bool enabled) const
 678 {
 679     // Check if any feature is enabled
 680     if (!enabled && std::all_of(_features.cbegin(), _features.cend(), [](bool feature) { return !feature; })) {
 681         return QStringList{} << "NoFeatures";
 682     }
 683
 684     QStringList result;
 685
 686     // TODO Qt5: Use QMetaEnum::fromType()
 687     auto featureEnum = Quassel::staticMetaObject.enumerator(Quassel::staticMetaObject.indexOfEnumerator("Feature"));
 688     for (quint32 i = 0; i < _features.size(); ++i) {
 689         if (_features[i] == enabled) {
 690             result << featureEnum.key(i);
 691         }
 692     }
 693     return result;
 694 }
 695
 696
 697 Quassel::LegacyFeatures Quassel::Features::toLegacyFeatures() const
 698 {
 699     // TODO Qt5: Use LegacyFeatures (flag operators for enum classes not supported in Qt4)
 700     quint32 result{0};
 701     // TODO Qt5: Use QMetaEnum::fromType()
 702     auto featureEnum = Quassel::staticMetaObject.enumerator(Quassel::staticMetaObject.indexOfEnumerator("Feature"));
 703     auto legacyFeatureEnum = Quassel::staticMetaObject.enumerator(Quassel::staticMetaObject.indexOfEnumerator("LegacyFeature"));
 704
 705     for (quint32 i = 0; i < _features.size(); ++i) {
 706         if (_features[i]) {
 707             int v = legacyFeatureEnum.keyToValue(featureEnum.key(i));
 708             if (v >= 0) {
 709                 result |= v;
 710             }
 711         }
 712     }
 713     return static_cast<LegacyFeatures>(result);
 714 }
 715
 716
 717 QStringList Quassel::Features::unknownFeatures() const
 718 {
 719     return _unknownFeatures;
 720 }