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 <iostream>
  24 #include <signal.h>
  25 #if !defined Q_OS_WIN && !defined Q_OS_MAC
  26 #  include <sys/types.h>
  27 #  include <sys/time.h>
  28 #  include <sys/resource.h>
  29 #endif
  30
  31 #include <QCoreApplication>
  32 #include <QDateTime>
  33 #include <QFileInfo>
  34 #include <QHostAddress>
  35 #include <QLibraryInfo>
  36 #include <QSettings>
  37 #include <QTranslator>
  38 #include <QUuid>
  39
  40 #include "bufferinfo.h"
  41 #include "identity.h"
  42 #include "logger.h"
  43 #include "message.h"
  44 #include "network.h"
  45 #include "peer.h"
  46 #include "protocol.h"
  47 #include "syncableobject.h"
  48 #include "types.h"
  49
  50 #include "../../version.h"
  51
  52 Quassel::BuildInfo Quassel::_buildInfo;
  53 AbstractCliParser *Quassel::_cliParser = 0;
  54 Quassel::RunMode Quassel::_runMode;
  55 QString Quassel::_configDirPath;
  56 QString Quassel::_translationDirPath;
  57 QStringList Quassel::_dataDirPaths;
  58 bool Quassel::_initialized = false;
  59 bool Quassel::DEBUG = false;
  60 QString Quassel::_coreDumpFileName;
  61 Quassel *Quassel::_instance = 0;
  62 bool Quassel::_handleCrashes = true;
  63 Quassel::LogLevel Quassel::_logLevel = InfoLevel;
  64 QFile *Quassel::_logFile = 0;
  65 bool Quassel::_logToSyslog = false;
  66
  67 Quassel::Quassel()
  68 {
  69     Q_ASSERT(!_instance);
  70     _instance = this;
  71
  72     // We catch SIGTERM and SIGINT (caused by Ctrl+C) to graceful shutdown Quassel.
  73     signal(SIGTERM, handleSignal);
  74     signal(SIGINT, handleSignal);
  75 #ifndef Q_OS_WIN
  76     // SIGHUP is used to reload configuration (i.e. SSL certificates)
  77     // Windows does not support SIGHUP
  78     signal(SIGHUP, handleSignal);
  79 #endif
  80 }
  81
  82
  83 Quassel::~Quassel()
  84 {
  85     if (logFile()) {
  86         logFile()->close();
  87         logFile()->deleteLater();
  88     }
  89     delete _cliParser;
  90 }
  91
  92
  93 bool Quassel::init()
  94 {
  95     if (_initialized)
  96         return true;  // allow multiple invocations because of MonolithicApplication
  97
  98     if (_handleCrashes) {
  99         // we have crashhandler for win32 and unix (based on execinfo).
 100 #if defined(Q_OS_WIN) || defined(HAVE_EXECINFO)
 101 # ifndef Q_OS_WIN
 102         // we only handle crashes ourselves if coredumps are disabled
 103         struct rlimit *limit = (rlimit *)malloc(sizeof(struct rlimit));
 104         int rc = getrlimit(RLIMIT_CORE, limit);
 105
 106         if (rc == -1 || !((long)limit->rlim_cur > 0 || limit->rlim_cur == RLIM_INFINITY)) {
 107 # endif /* Q_OS_WIN */
 108         signal(SIGABRT, handleSignal);
 109         signal(SIGSEGV, handleSignal);
 110 # ifndef Q_OS_WIN
 111         signal(SIGBUS, handleSignal);
 112     }
 113     free(limit);
 114 # endif /* Q_OS_WIN */
 115 #endif /* Q_OS_WIN || HAVE_EXECINFO */
 116     }
 117
 118     _initialized = true;
 119     qsrand(QTime(0, 0, 0).secsTo(QTime::currentTime()));
 120
 121     setupEnvironment();
 122     registerMetaTypes();
 123
 124     Network::setDefaultCodecForServer("ISO-8859-1");
 125     Network::setDefaultCodecForEncoding("UTF-8");
 126     Network::setDefaultCodecForDecoding("ISO-8859-15");
 127
 128     if (isOptionSet("help")) {
 129         cliParser()->usage();
 130         return false;
 131     }
 132
 133     if (isOptionSet("version")) {
 134         std::cout << qPrintable("Quassel IRC: " + Quassel::buildInfo().plainVersionString) << std::endl;
 135         return false;
 136     }
 137
 138     DEBUG = isOptionSet("debug");
 139
 140     // set up logging
 141     if (Quassel::runMode() != Quassel::ClientOnly) {
 142         if (isOptionSet("loglevel")) {
 143             QString level = optionValue("loglevel");
 144
 145             if (level == "Debug") _logLevel = DebugLevel;
 146             else if (level == "Info") _logLevel = InfoLevel;
 147             else if (level == "Warning") _logLevel = WarningLevel;
 148             else if (level == "Error") _logLevel = ErrorLevel;
 149         }
 150
 151         QString logfilename = optionValue("logfile");
 152         if (!logfilename.isEmpty()) {
 153             _logFile = new QFile(logfilename);
 154             if (!_logFile->open(QIODevice::Append | QIODevice::Text)) {
 155                 qWarning() << "Could not open log file" << logfilename << ":" << _logFile->errorString();
 156                 _logFile->deleteLater();
 157                 _logFile = 0;
 158             }
 159         }
 160 #ifdef HAVE_SYSLOG
 161         _logToSyslog = isOptionSet("syslog");
 162 #endif
 163     }
 164
 165     return true;
 166 }
 167
 168
 169 void Quassel::quit()
 170 {
 171     QCoreApplication::quit();
 172 }
 173
 174
 175 //! Register our custom types with Qt's Meta Object System.
 176 /**  This makes them available for QVariant and in signals/slots, among other things.
 177 *
 178 */
 179 void Quassel::registerMetaTypes()
 180 {
 181     // Complex types
 182     qRegisterMetaType<Message>("Message");
 183     qRegisterMetaType<BufferInfo>("BufferInfo");
 184     qRegisterMetaType<NetworkInfo>("NetworkInfo");
 185     qRegisterMetaType<Network::Server>("Network::Server");
 186     qRegisterMetaType<Identity>("Identity");
 187
 188     qRegisterMetaTypeStreamOperators<Message>("Message");
 189     qRegisterMetaTypeStreamOperators<BufferInfo>("BufferInfo");
 190     qRegisterMetaTypeStreamOperators<NetworkInfo>("NetworkInfo");
 191     qRegisterMetaTypeStreamOperators<Network::Server>("Network::Server");
 192     qRegisterMetaTypeStreamOperators<Identity>("Identity");
 193
 194     qRegisterMetaType<IdentityId>("IdentityId");
 195     qRegisterMetaType<BufferId>("BufferId");
 196     qRegisterMetaType<NetworkId>("NetworkId");
 197     qRegisterMetaType<UserId>("UserId");
 198     qRegisterMetaType<AccountId>("AccountId");
 199     qRegisterMetaType<MsgId>("MsgId");
 200
 201     qRegisterMetaType<QHostAddress>("QHostAddress");
 202     qRegisterMetaType<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.applicationName = "quassel";
 257     _buildInfo.coreApplicationName = "quasselcore";
 258     _buildInfo.clientApplicationName = "quasselclient";
 259     _buildInfo.organizationName = "Quassel Project";
 260     _buildInfo.organizationDomain = "quassel-irc.org";
 261
 262     _buildInfo.protocolVersion = 10; // FIXME: deprecated, will be removed
 263
 264     _buildInfo.baseVersion = QUASSEL_VERSION_STRING;
 265     _buildInfo.generatedVersion = GIT_DESCRIBE;
 266
 267     // Check if we got a commit hash
 268     if (!QString(GIT_HEAD).isEmpty()) {
 269         _buildInfo.commitHash = GIT_HEAD;
 270         QDateTime date;
 271         date.setTime_t(GIT_COMMIT_DATE);
 272         _buildInfo.commitDate = date.toString();
 273     }
 274     else if (!QString(DIST_HASH).contains("Format")) {
 275         _buildInfo.commitHash = DIST_HASH;
 276         _buildInfo.commitDate = QString(DIST_DATE);
 277     }
 278
 279     // create a nice version string
 280     if (_buildInfo.generatedVersion.isEmpty()) {
 281         if (!_buildInfo.commitHash.isEmpty()) {
 282             // dist version
 283             _buildInfo.plainVersionString = QString("v%1 (dist-%2)")
 284                                             .arg(_buildInfo.baseVersion)
 285                                             .arg(_buildInfo.commitHash.left(7));
 286             _buildInfo.fancyVersionString = QString("v%1 (dist-<a href=\"https://github.com/quassel/quassel/commit/%3\">%2</a>)")
 287                                             .arg(_buildInfo.baseVersion)
 288                                             .arg(_buildInfo.commitHash.left(7))
 289                                             .arg(_buildInfo.commitHash);
 290         }
 291         else {
 292             // we only have a base version :(
 293             _buildInfo.plainVersionString = QString("v%1 (unknown revision)").arg(_buildInfo.baseVersion);
 294         }
 295     }
 296     else {
 297         // analyze what we got from git-describe
 298         QRegExp rx("(.*)-(\\d+)-g([0-9a-f]+)(-dirty)?$");
 299         if (rx.exactMatch(_buildInfo.generatedVersion)) {
 300             QString distance = rx.cap(2) == "0" ? QString() : QString("%1+%2 ").arg(rx.cap(1), rx.cap(2));
 301             _buildInfo.plainVersionString = QString("v%1 (%2git-%3%4)")
 302                                             .arg(_buildInfo.baseVersion, distance, rx.cap(3), rx.cap(4));
 303             if (!_buildInfo.commitHash.isEmpty()) {
 304                 _buildInfo.fancyVersionString = QString("v%1 (%2git-<a href=\"https://github.com/quassel/quassel/commit/%5\">%3</a>%4)")
 305                                                 .arg(_buildInfo.baseVersion, distance, rx.cap(3), rx.cap(4), _buildInfo.commitHash);
 306             }
 307         }
 308         else {
 309             _buildInfo.plainVersionString = QString("v%1 (invalid revision)").arg(_buildInfo.baseVersion);
 310         }
 311     }
 312     if (_buildInfo.fancyVersionString.isEmpty())
 313         _buildInfo.fancyVersionString = _buildInfo.plainVersionString;
 314 }
 315
 316
 317 //! Signal handler for graceful shutdown.
 318 void Quassel::handleSignal(int sig)
 319 {
 320     switch (sig) {
 321     case SIGTERM:
 322     case SIGINT:
 323         qWarning("%s", qPrintable(QString("Caught signal %1 - exiting.").arg(sig)));
 324         if (_instance)
 325             _instance->quit();
 326         else
 327             QCoreApplication::quit();
 328         break;
 329 #ifndef Q_OS_WIN
 330 // Windows does not support SIGHUP
 331     case SIGHUP:
 332         // Most applications use this as the 'configuration reload' command, e.g. nginx uses it for
 333         // graceful reloading of processes.
 334         if (_instance) {
 335             // If the instance exists, reload the configuration
 336             quInfo() << "Caught signal" << SIGHUP <<"- reloading configuration";
 337             if (_instance->reloadConfig()) {
 338                 quInfo() << "Successfully reloaded configuration";
 339             }
 340         }
 341         break;
 342 #endif
 343     case SIGABRT:
 344     case SIGSEGV:
 345 #ifndef Q_OS_WIN
 346     case SIGBUS:
 347 #endif
 348         logBacktrace(coreDumpFileName());
 349         exit(EXIT_FAILURE);
 350         break;
 351     default:
 352         break;
 353     }
 354 }
 355
 356
 357 void Quassel::logFatalMessage(const char *msg)
 358 {
 359 #ifdef Q_OS_MAC
 360     Q_UNUSED(msg)
 361 #else
 362     QFile dumpFile(coreDumpFileName());
 363     dumpFile.open(QIODevice::Append);
 364     QTextStream dumpStream(&dumpFile);
 365
 366     dumpStream << "Fatal: " << msg << '\n';
 367     dumpStream.flush();
 368     dumpFile.close();
 369 #endif
 370 }
 371
 372
 373 Quassel::Features Quassel::features()
 374 {
 375     Features feats = 0;
 376     for (int i = 1; i <= NumFeatures; i <<= 1)
 377         feats |= (Feature)i;
 378
 379     return feats;
 380 }
 381
 382
 383 const QString &Quassel::coreDumpFileName()
 384 {
 385     if (_coreDumpFileName.isEmpty()) {
 386         QDir configDir(configDirPath());
 387         _coreDumpFileName = configDir.absoluteFilePath(QString("Quassel-Crash-%1.log").arg(QDateTime::currentDateTime().toString("yyyyMMdd-hhmm")));
 388         QFile dumpFile(_coreDumpFileName);
 389         dumpFile.open(QIODevice::Append);
 390         QTextStream dumpStream(&dumpFile);
 391         dumpStream << "Quassel IRC: " << _buildInfo.baseVersion << ' ' << _buildInfo.commitHash << '\n';
 392         qDebug() << "Quassel IRC: " << _buildInfo.baseVersion << ' ' << _buildInfo.commitHash;
 393         dumpStream.flush();
 394         dumpFile.close();
 395     }
 396     return _coreDumpFileName;
 397 }
 398
 399
 400 QString Quassel::configDirPath()
 401 {
 402     if (!_configDirPath.isEmpty())
 403         return _configDirPath;
 404
 405     if (Quassel::isOptionSet("datadir")) {
 406         qWarning() << "Obsolete option --datadir used!";
 407         _configDirPath = Quassel::optionValue("datadir");
 408     }
 409     else if (Quassel::isOptionSet("configdir")) {
 410         _configDirPath = Quassel::optionValue("configdir");
 411     }
 412     else {
 413 #ifdef Q_OS_MAC
 414         // On Mac, the path is always the same
 415         _configDirPath = QDir::homePath() + "/Library/Application Support/Quassel/";
 416 #else
 417         // We abuse QSettings to find us a sensible path on the other platforms
 418 #  ifdef Q_OS_WIN
 419         // don't use the registry
 420         QSettings::Format format = QSettings::IniFormat;
 421 #  else
 422         QSettings::Format format = QSettings::NativeFormat;
 423 #  endif
 424         QSettings s(format, QSettings::UserScope, QCoreApplication::organizationDomain(), buildInfo().applicationName);
 425         QFileInfo fileInfo(s.fileName());
 426         _configDirPath = fileInfo.dir().absolutePath();
 427 #endif /* Q_OS_MAC */
 428     }
 429
 430     if (!_configDirPath.endsWith(QDir::separator()) && !_configDirPath.endsWith('/'))
 431         _configDirPath += QDir::separator();
 432
 433     QDir qDir(_configDirPath);
 434     if (!qDir.exists(_configDirPath)) {
 435         if (!qDir.mkpath(_configDirPath)) {
 436             qCritical() << "Unable to create Quassel config directory:" << qPrintable(qDir.absolutePath());
 437             return QString();
 438         }
 439     }
 440
 441     return _configDirPath;
 442 }
 443
 444
 445 QStringList Quassel::dataDirPaths()
 446 {
 447     return _dataDirPaths;
 448 }
 449
 450
 451 QStringList Quassel::findDataDirPaths() const
 452 {
 453     // We don't use QStandardPaths for now, as we still need to provide fallbacks for Qt4 and
 454     // want to stay consistent.
 455
 456     QStringList dataDirNames;
 457 #ifdef Q_OS_WIN
 458     dataDirNames << qgetenv("APPDATA") + QCoreApplication::organizationDomain() + "/share/apps/quassel/"
 459                  << qgetenv("APPDATA") + QCoreApplication::organizationDomain()
 460                  << QCoreApplication::applicationDirPath();
 461 #elif defined Q_OS_MAC
 462     dataDirNames << QDir::homePath() + "/Library/Application Support/Quassel/"
 463                  << QCoreApplication::applicationDirPath();
 464 #else
 465     // Linux et al
 466
 467     // XDG_DATA_HOME is the location for users to override system-installed files, usually in .local/share
 468     // This should thus come first.
 469     QString xdgDataHome = QFile::decodeName(qgetenv("XDG_DATA_HOME"));
 470     if (xdgDataHome.isEmpty())
 471         xdgDataHome = QDir::homePath() + QLatin1String("/.local/share");
 472     dataDirNames << xdgDataHome;
 473
 474     // Now whatever is configured through XDG_DATA_DIRS
 475     QString xdgDataDirs = QFile::decodeName(qgetenv("XDG_DATA_DIRS"));
 476     if (xdgDataDirs.isEmpty())
 477         dataDirNames << "/usr/local/share" << "/usr/share";
 478     else
 479         dataDirNames << xdgDataDirs.split(':', QString::SkipEmptyParts);
 480
 481     // Just in case, also check our install prefix
 482     dataDirNames << QCoreApplication::applicationDirPath() + "/../share";
 483
 484     // Normalize and append our application name
 485     for (int i = 0; i < dataDirNames.count(); i++)
 486         dataDirNames[i] = QDir::cleanPath(dataDirNames.at(i)) + "/quassel/";
 487
 488 #endif
 489
 490     // Add resource path and workdir just in case.
 491     // Workdir should have precedence
 492     dataDirNames.prepend(QCoreApplication::applicationDirPath() + "/data/");
 493     dataDirNames.append(":/data/");
 494
 495     // Append trailing '/' and check for existence
 496     auto iter = dataDirNames.begin();
 497     while (iter != dataDirNames.end()) {
 498         if (!iter->endsWith(QDir::separator()) && !iter->endsWith('/'))
 499             iter->append(QDir::separator());
 500         if (!QFile::exists(*iter))
 501             iter = dataDirNames.erase(iter);
 502         else
 503             ++iter;
 504     }
 505
 506     dataDirNames.removeDuplicates();
 507
 508     return dataDirNames;
 509 }
 510
 511
 512 QString Quassel::findDataFilePath(const QString &fileName)
 513 {
 514     QStringList dataDirs = dataDirPaths();
 515     foreach(QString dataDir, dataDirs) {
 516         QString path = dataDir + fileName;
 517         if (QFile::exists(path))
 518             return path;
 519     }
 520     return QString();
 521 }
 522
 523
 524 QStringList Quassel::scriptDirPaths()
 525 {
 526     QStringList res(configDirPath() + "scripts/");
 527     foreach(QString path, dataDirPaths())
 528     res << path + "scripts/";
 529     return res;
 530 }
 531
 532
 533 QString Quassel::translationDirPath()
 534 {
 535     if (_translationDirPath.isEmpty()) {
 536         // We support only one translation dir; fallback mechanisms wouldn't work else.
 537         // This means that if we have a $data/translations dir, the internal :/i18n resource won't be considered.
 538         foreach(const QString &dir, dataDirPaths()) {
 539             if (QFile::exists(dir + "translations/")) {
 540                 _translationDirPath = dir + "translations/";
 541                 break;
 542             }
 543         }
 544         if (_translationDirPath.isEmpty())
 545             _translationDirPath = ":/i18n/";
 546     }
 547     return _translationDirPath;
 548 }
 549
 550
 551 void Quassel::loadTranslation(const QLocale &locale)
 552 {
 553     QTranslator *qtTranslator = QCoreApplication::instance()->findChild<QTranslator *>("QtTr");
 554     QTranslator *quasselTranslator = QCoreApplication::instance()->findChild<QTranslator *>("QuasselTr");
 555
 556     if (qtTranslator)
 557         qApp->removeTranslator(qtTranslator);
 558     if (quasselTranslator)
 559         qApp->removeTranslator(quasselTranslator);
 560
 561     // We use QLocale::C to indicate that we don't want a translation
 562     if (locale.language() == QLocale::C)
 563         return;
 564
 565     qtTranslator = new QTranslator(qApp);
 566     qtTranslator->setObjectName("QtTr");
 567     qApp->installTranslator(qtTranslator);
 568
 569     quasselTranslator = new QTranslator(qApp);
 570     quasselTranslator->setObjectName("QuasselTr");
 571     qApp->installTranslator(quasselTranslator);
 572
 573 #if QT_VERSION >= 0x040800 && !defined Q_OS_MAC
 574     bool success = qtTranslator->load(locale, QString("qt_"), translationDirPath());
 575     if (!success)
 576         qtTranslator->load(locale, QString("qt_"), QLibraryInfo::location(QLibraryInfo::TranslationsPath));
 577     quasselTranslator->load(locale, QString(""), translationDirPath());
 578 #else
 579     bool success = qtTranslator->load(QString("qt_%1").arg(locale.name()), translationDirPath());
 580     if (!success)
 581         qtTranslator->load(QString("qt_%1").arg(locale.name()), QLibraryInfo::location(QLibraryInfo::TranslationsPath));
 582     quasselTranslator->load(QString("%1").arg(locale.name()), translationDirPath());
 583 #endif
 584 }