src/core/core.cpp

   1 /***************************************************************************
   2  *   Copyright (C) 2005-2012 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 <QCoreApplication>
  22
  23 #include "core.h"
  24 #include "coresession.h"
  25 #include "coresettings.h"
  26 #include "postgresqlstorage.h"
  27 #include "quassel.h"
  28 #include "signalproxy.h"
  29 #include "sqlitestorage.h"
  30 #include "network.h"
  31 #include "logger.h"
  32
  33 #include "util.h"
  34
  35 // migration related
  36 #include <QFile>
  37 #ifdef Q_OS_WIN32
  38 #  include <windows.h>
  39 #else
  40 #  include <unistd.h>
  41 #  include <termios.h>
  42 #endif /* Q_OS_WIN32 */
  43
  44 #ifdef HAVE_UMASK
  45 #  include <sys/types.h>
  46 #  include <sys/stat.h>
  47 #endif /* HAVE_UMASK */
  48
  49 // ==============================
  50 //  Custom Events
  51 // ==============================
  52 const int Core::AddClientEventId = QEvent::registerEventType();
  53
  54 class AddClientEvent : public QEvent
  55 {
  56 public:
  57     AddClientEvent(QTcpSocket *socket, UserId uid) : QEvent(QEvent::Type(Core::AddClientEventId)), socket(socket), userId(uid) {}
  58     QTcpSocket *socket;
  59     UserId userId;
  60 };
  61
  62
  63 // ==============================
  64 //  Core
  65 // ==============================
  66 Core *Core::instanceptr = 0;
  67
  68 Core *Core::instance()
  69 {
  70     if (instanceptr) return instanceptr;
  71     instanceptr = new Core();
  72     instanceptr->init();
  73     return instanceptr;
  74 }
  75
  76
  77 void Core::destroy()
  78 {
  79     delete instanceptr;
  80     instanceptr = 0;
  81 }
  82
  83
  84 Core::Core()
  85     : _storage(0)
  86 {
  87 #ifdef HAVE_UMASK
  88     umask(S_IRWXG | S_IRWXO);
  89 #endif
  90     _startTime = QDateTime::currentDateTime().toUTC(); // for uptime :)
  91
  92     Quassel::loadTranslation(QLocale::system());
  93
  94     // FIXME: MIGRATION 0.3 -> 0.4: Move database and core config to new location
  95     // Move settings, note this does not delete the old files
  96 #ifdef Q_WS_MAC
  97     QSettings newSettings("quassel-irc.org", "quasselcore");
  98 #else
  99
 100 # ifdef Q_WS_WIN
 101     QSettings::Format format = QSettings::IniFormat;
 102 # else
 103     QSettings::Format format = QSettings::NativeFormat;
 104 # endif
 105     QString newFilePath = Quassel::configDirPath() + "quasselcore"
 106                           + ((format == QSettings::NativeFormat) ? QLatin1String(".conf") : QLatin1String(".ini"));
 107     QSettings newSettings(newFilePath, format);
 108 #endif /* Q_WS_MAC */
 109
 110     if (newSettings.value("Config/Version").toUInt() == 0) {
 111 #   ifdef Q_WS_MAC
 112         QString org = "quassel-irc.org";
 113 #   else
 114         QString org = "Quassel Project";
 115 #   endif
 116         QSettings oldSettings(org, "Quassel Core");
 117         if (oldSettings.allKeys().count()) {
 118             qWarning() << "\n\n*** IMPORTANT: Config and data file locations have changed. Attempting to auto-migrate your core settings...";
 119             foreach(QString key, oldSettings.allKeys())
 120             newSettings.setValue(key, oldSettings.value(key));
 121             newSettings.setValue("Config/Version", 1);
 122             qWarning() << "*   Your core settings have been migrated to" << newSettings.fileName();
 123
 124 #ifndef Q_WS_MAC /* we don't need to move the db and cert for mac */
 125 #ifdef Q_OS_WIN32
 126             QString quasselDir = qgetenv("APPDATA") + "/quassel/";
 127 #elif defined Q_WS_MAC
 128             QString quasselDir = QDir::homePath() + "/Library/Application Support/Quassel/";
 129 #else
 130             QString quasselDir = QDir::homePath() + "/.quassel/";
 131 #endif
 132
 133             QFileInfo info(Quassel::configDirPath() + "quassel-storage.sqlite");
 134             if (!info.exists()) {
 135                 // move database, if we found it
 136                 QFile oldDb(quasselDir + "quassel-storage.sqlite");
 137                 if (oldDb.exists()) {
 138                     bool success = oldDb.rename(Quassel::configDirPath() + "quassel-storage.sqlite");
 139                     if (success)
 140                         qWarning() << "*   Your database has been moved to" << Quassel::configDirPath() + "quassel-storage.sqlite";
 141                     else
 142                         qWarning() << "!!! Moving your database has failed. Please move it manually into" << Quassel::configDirPath();
 143                 }
 144             }
 145             // move certificate
 146             QFileInfo certInfo(quasselDir + "quasselCert.pem");
 147             if (certInfo.exists()) {
 148                 QFile cert(quasselDir + "quasselCert.pem");
 149                 bool success = cert.rename(Quassel::configDirPath() + "quasselCert.pem");
 150                 if (success)
 151                     qWarning() << "*   Your certificate has been moved to" << Quassel::configDirPath() + "quasselCert.pem";
 152                 else
 153                     qWarning() << "!!! Moving your certificate has failed. Please move it manually into" << Quassel::configDirPath();
 154             }
 155 #endif /* !Q_WS_MAC */
 156             qWarning() << "*** Migration completed.\n\n";
 157         }
 158     }
 159     // MIGRATION end
 160
 161     // check settings version
 162     // so far, we only have 1
 163     CoreSettings s;
 164     if (s.version() != 1) {
 165         qCritical() << "Invalid core settings version, terminating!";
 166         exit(EXIT_FAILURE);
 167     }
 168
 169     registerStorageBackends();
 170
 171     connect(&_storageSyncTimer, SIGNAL(timeout()), this, SLOT(syncStorage()));
 172     _storageSyncTimer.start(10 * 60 * 1000); // 10 minutes
 173 }
 174
 175
 176 void Core::init()
 177 {
 178     CoreSettings cs;
 179     _configured = initStorage(cs.storageSettings().toMap());
 180
 181     if (Quassel::isOptionSet("select-backend")) {
 182         selectBackend(Quassel::optionValue("select-backend"));
 183         exit(0);
 184     }
 185
 186     if (!_configured) {
 187         if (!_storageBackends.count()) {
 188             qWarning() << qPrintable(tr("Could not initialize any storage backend! Exiting..."));
 189             qWarning() << qPrintable(tr("Currently, Quassel supports SQLite3 and PostgreSQL. You need to build your\n"
 190                                         "Qt library with the sqlite or postgres plugin enabled in order for quasselcore\n"
 191                                         "to work."));
 192             exit(1); // TODO make this less brutal (especially for mono client -> popup)
 193         }
 194         qWarning() << "Core is currently not configured! Please connect with a Quassel Client for basic setup.";
 195     }
 196
 197     if (Quassel::isOptionSet("add-user")) {
 198         createUser();
 199         exit(0);
 200     }
 201
 202     if (Quassel::isOptionSet("change-userpass")) {
 203         changeUserPass(Quassel::optionValue("change-userpass"));
 204         exit(0);
 205     }
 206
 207     connect(&_server, SIGNAL(newConnection()), this, SLOT(incomingConnection()));
 208     connect(&_v6server, SIGNAL(newConnection()), this, SLOT(incomingConnection()));
 209     if (!startListening()) exit(1);  // TODO make this less brutal
 210
 211     if (Quassel::isOptionSet("oidentd"))
 212         _oidentdConfigGenerator = new OidentdConfigGenerator(this);
 213 }
 214
 215
 216 Core::~Core()
 217 {
 218     foreach(QTcpSocket *socket, blocksizes.keys()) {
 219         socket->disconnectFromHost(); // disconnect non authed clients
 220     }
 221     qDeleteAll(sessions);
 222     qDeleteAll(_storageBackends);
 223 }
 224
 225
 226 /*** Session Restore ***/
 227
 228 void Core::saveState()
 229 {
 230     CoreSettings s;
 231     QVariantMap state;
 232     QVariantList activeSessions;
 233     foreach(UserId user, instance()->sessions.keys()) activeSessions << QVariant::fromValue<UserId>(user);
 234     state["CoreStateVersion"] = 1;
 235     state["ActiveSessions"] = activeSessions;
 236     s.setCoreState(state);
 237 }
 238
 239
 240 void Core::restoreState()
 241 {
 242     if (!instance()->_configured) {
 243         // qWarning() << qPrintable(tr("Cannot restore a state for an unconfigured core!"));
 244         return;
 245     }
 246     if (instance()->sessions.count()) {
 247         qWarning() << qPrintable(tr("Calling restoreState() even though active sessions exist!"));
 248         return;
 249     }
 250     CoreSettings s;
 251     /* We don't check, since we are at the first version since switching to Git
 252     uint statever = s.coreState().toMap()["CoreStateVersion"].toUInt();
 253     if(statever < 1) {
 254       qWarning() << qPrintable(tr("Core state too old, ignoring..."));
 255       return;
 256     }
 257     */
 258
 259     QVariantList activeSessions = s.coreState().toMap()["ActiveSessions"].toList();
 260     if (activeSessions.count() > 0) {
 261         quInfo() << "Restoring previous core state...";
 262         foreach(QVariant v, activeSessions) {
 263             UserId user = v.value<UserId>();
 264             instance()->createSession(user, true);
 265         }
 266     }
 267 }
 268
 269
 270 /*** Core Setup ***/
 271 QString Core::setupCoreForInternalUsage()
 272 {
 273     Q_ASSERT(!_storageBackends.isEmpty());
 274     QVariantMap setupData;
 275     qsrand(QDateTime::currentDateTime().toTime_t());
 276     int pass = 0;
 277     for (int i = 0; i < 10; i++) {
 278         pass *= 10;
 279         pass += qrand() % 10;
 280     }
 281     setupData["AdminUser"] = "AdminUser";
 282     setupData["AdminPasswd"] = QString::number(pass);
 283     setupData["Backend"] = QString("SQLite"); // mono client currently needs sqlite
 284     return setupCore(setupData);
 285 }
 286
 287
 288 QString Core::setupCore(QVariantMap setupData)
 289 {
 290     QString user = setupData.take("AdminUser").toString();
 291     QString password = setupData.take("AdminPasswd").toString();
 292     if (user.isEmpty() || password.isEmpty()) {
 293         return tr("Admin user or password not set.");
 294     }
 295     if (_configured || !(_configured = initStorage(setupData, true))) {
 296         return tr("Could not setup storage!");
 297     }
 298     CoreSettings s;
 299     s.setStorageSettings(setupData);
 300     quInfo() << qPrintable(tr("Creating admin user..."));
 301     _storage->addUser(user, password);
 302     startListening(); // TODO check when we need this
 303     return QString();
 304 }
 305
 306
 307 /*** Storage Handling ***/
 308 void Core::registerStorageBackends()
 309 {
 310     // Register storage backends here!
 311     registerStorageBackend(new SqliteStorage(this));
 312     registerStorageBackend(new PostgreSqlStorage(this));
 313 }
 314
 315
 316 bool Core::registerStorageBackend(Storage *backend)
 317 {
 318     if (backend->isAvailable()) {
 319         _storageBackends[backend->displayName()] = backend;
 320         return true;
 321     }
 322     else {
 323         backend->deleteLater();
 324         return false;
 325     }
 326 }
 327
 328
 329 void Core::unregisterStorageBackends()
 330 {
 331     foreach(Storage *s, _storageBackends.values()) {
 332         s->deleteLater();
 333     }
 334     _storageBackends.clear();
 335 }
 336
 337
 338 void Core::unregisterStorageBackend(Storage *backend)
 339 {
 340     _storageBackends.remove(backend->displayName());
 341     backend->deleteLater();
 342 }
 343
 344
 345 // old db settings:
 346 // "Type" => "sqlite"
 347 bool Core::initStorage(const QString &backend, QVariantMap settings, bool setup)
 348 {
 349     _storage = 0;
 350
 351     if (backend.isEmpty()) {
 352         return false;
 353     }
 354
 355     Storage *storage = 0;
 356     if (_storageBackends.contains(backend)) {
 357         storage = _storageBackends[backend];
 358     }
 359     else {
 360         qCritical() << "Selected storage backend is not available:" << backend;
 361         return false;
 362     }
 363
 364     Storage::State storageState = storage->init(settings);
 365     switch (storageState) {
 366     case Storage::NeedsSetup:
 367         if (!setup)
 368             return false;  // trigger setup process
 369         if (storage->setup(settings))
 370             return initStorage(backend, settings, false);
 371     // if setup wasn't successfull we mark the backend as unavailable
 372     case Storage::NotAvailable:
 373         qCritical() << "Selected storage backend is not available:" << backend;
 374         storage->deleteLater();
 375         _storageBackends.remove(backend);
 376         storage = 0;
 377         return false;
 378     case Storage::IsReady:
 379         // delete all other backends
 380         _storageBackends.remove(backend);
 381         unregisterStorageBackends();
 382         connect(storage, SIGNAL(bufferInfoUpdated(UserId, const BufferInfo &)), this, SIGNAL(bufferInfoUpdated(UserId, const BufferInfo &)));
 383     }
 384     _storage = storage;
 385     return true;
 386 }
 387
 388
 389 bool Core::initStorage(QVariantMap dbSettings, bool setup)
 390 {
 391     return initStorage(dbSettings["Backend"].toString(), dbSettings["ConnectionProperties"].toMap(), setup);
 392 }
 393
 394
 395 void Core::syncStorage()
 396 {
 397     if (_storage)
 398         _storage->sync();
 399 }
 400
 401
 402 /*** Storage Access ***/
 403 bool Core::createNetwork(UserId user, NetworkInfo &info)
 404 {
 405     NetworkId networkId = instance()->_storage->createNetwork(user, info);
 406     if (!networkId.isValid())
 407         return false;
 408
 409     info.networkId = networkId;
 410     return true;
 411 }
 412
 413
 414 /*** Network Management ***/
 415
 416 bool Core::startListening()
 417 {
 418     // in mono mode we only start a local port if a port is specified in the cli call
 419     if (Quassel::runMode() == Quassel::Monolithic && !Quassel::isOptionSet("port"))
 420         return true;
 421
 422     bool success = false;
 423     uint port = Quassel::optionValue("port").toUInt();
 424
 425     const QString listen = Quassel::optionValue("listen");
 426     const QStringList listen_list = listen.split(",", QString::SkipEmptyParts);
 427     if (listen_list.size() > 0) {
 428         foreach(const QString listen_term, listen_list) { // TODO: handle multiple interfaces for same TCP version gracefully
 429             QHostAddress addr;
 430             if (!addr.setAddress(listen_term)) {
 431                 qCritical() << qPrintable(
 432                     tr("Invalid listen address %1")
 433                     .arg(listen_term)
 434                     );
 435             }
 436             else {
 437                 switch (addr.protocol()) {
 438                 case QAbstractSocket::IPv6Protocol:
 439                     if (_v6server.listen(addr, port)) {
 440                         quInfo() << qPrintable(
 441                             tr("Listening for GUI clients on IPv6 %1 port %2 using protocol version %3")
 442                             .arg(addr.toString())
 443                             .arg(_v6server.serverPort())
 444                             .arg(Quassel::buildInfo().protocolVersion)
 445                             );
 446                         success = true;
 447                     }
 448                     else
 449                         quWarning() << qPrintable(
 450                             tr("Could not open IPv6 interface %1:%2: %3")
 451                             .arg(addr.toString())
 452                             .arg(port)
 453                             .arg(_v6server.errorString()));
 454                     break;
 455                 case QAbstractSocket::IPv4Protocol:
 456                     if (_server.listen(addr, port)) {
 457                         quInfo() << qPrintable(
 458                             tr("Listening for GUI clients on IPv4 %1 port %2 using protocol version %3")
 459                             .arg(addr.toString())
 460                             .arg(_server.serverPort())
 461                             .arg(Quassel::buildInfo().protocolVersion)
 462                             );
 463                         success = true;
 464                     }
 465                     else {
 466                         // if v6 succeeded on Any, the port will be already in use - don't display the error then
 467                         if (!success || _server.serverError() != QAbstractSocket::AddressInUseError)
 468                             quWarning() << qPrintable(
 469                                 tr("Could not open IPv4 interface %1:%2: %3")
 470                                 .arg(addr.toString())
 471                                 .arg(port)
 472                                 .arg(_server.errorString()));
 473                     }
 474                     break;
 475                 default:
 476                     qCritical() << qPrintable(
 477                         tr("Invalid listen address %1, unknown network protocol")
 478                         .arg(listen_term)
 479                         );
 480                     break;
 481                 }
 482             }
 483         }
 484     }
 485     if (!success)
 486         quError() << qPrintable(tr("Could not open any network interfaces to listen on!"));
 487
 488     return success;
 489 }
 490
 491
 492 void Core::stopListening(const QString &reason)
 493 {
 494     bool wasListening = false;
 495     if (_server.isListening()) {
 496         wasListening = true;
 497         _server.close();
 498     }
 499     if (_v6server.isListening()) {
 500         wasListening = true;
 501         _v6server.close();
 502     }
 503     if (wasListening) {
 504         if (reason.isEmpty())
 505             quInfo() << "No longer listening for GUI clients.";
 506         else
 507             quInfo() << qPrintable(reason);
 508     }
 509 }
 510
 511
 512 void Core::incomingConnection()
 513 {
 514     QTcpServer *server = qobject_cast<QTcpServer *>(sender());
 515     Q_ASSERT(server);
 516     while (server->hasPendingConnections()) {
 517         QTcpSocket *socket = server->nextPendingConnection();
 518         connect(socket, SIGNAL(disconnected()), this, SLOT(clientDisconnected()));
 519         connect(socket, SIGNAL(readyRead()), this, SLOT(clientHasData()));
 520         connect(socket, SIGNAL(error(QAbstractSocket::SocketError)), this, SLOT(socketError(QAbstractSocket::SocketError)));
 521
 522         QVariantMap clientInfo;
 523         blocksizes.insert(socket, (quint32)0);
 524         quInfo() << qPrintable(tr("Client connected from"))  << qPrintable(socket->peerAddress().toString());
 525
 526         if (!_configured) {
 527             stopListening(tr("Closing server for basic setup."));
 528         }
 529     }
 530 }
 531
 532
 533 void Core::clientHasData()
 534 {
 535     QTcpSocket *socket = dynamic_cast<QTcpSocket *>(sender());
 536     Q_ASSERT(socket && blocksizes.contains(socket));
 537     QVariant item;
 538     while (SignalProxy::readDataFromDevice(socket, blocksizes[socket], item)) {
 539         QVariantMap msg = item.toMap();
 540         processClientMessage(socket, msg);
 541         if (!blocksizes.contains(socket)) break;  // this socket is no longer ours to handle!
 542     }
 543 }
 544
 545
 546 void Core::processClientMessage(QTcpSocket *socket, const QVariantMap &msg)
 547 {
 548     if (!msg.contains("MsgType")) {
 549         // Client is way too old, does not even use the current init format
 550         qWarning() << qPrintable(tr("Antique client trying to connect... refusing."));
 551         socket->close();
 552         return;
 553     }
 554     // OK, so we have at least an init message format we can understand
 555     if (msg["MsgType"] == "ClientInit") {
 556         QVariantMap reply;
 557
 558         // Just version information -- check it!
 559         uint ver = msg["ProtocolVersion"].toUInt();
 560         if (ver < Quassel::buildInfo().coreNeedsProtocol) {
 561             reply["MsgType"] = "ClientInitReject";
 562             reply["Error"] = tr("<b>Your Quassel Client is too old!</b><br>"
 563                                 "This core needs at least client/core protocol version %1.<br>"
 564                                 "Please consider upgrading your client.").arg(Quassel::buildInfo().coreNeedsProtocol);
 565             SignalProxy::writeDataToDevice(socket, reply);
 566             qWarning() << qPrintable(tr("Client")) << qPrintable(socket->peerAddress().toString()) << qPrintable(tr("too old, rejecting."));
 567             socket->close(); return;
 568         }
 569
 570         reply["ProtocolVersion"] = Quassel::buildInfo().protocolVersion;
 571         reply["CoreVersion"] = Quassel::buildInfo().fancyVersionString;
 572         reply["CoreDate"] = Quassel::buildInfo().buildDate;
 573         reply["CoreStartTime"] = startTime(); // v10 clients don't necessarily parse this, see below
 574
 575         // FIXME: newer clients no longer use the hardcoded CoreInfo (for now), since it gets the
 576         //        time zone wrong. With the next protocol bump (10 -> 11), we should remove this
 577         //        or make it properly configurable.
 578
 579         int uptime = startTime().secsTo(QDateTime::currentDateTime().toUTC());
 580         int updays = uptime / 86400; uptime %= 86400;
 581         int uphours = uptime / 3600; uptime %= 3600;
 582         int upmins = uptime / 60;
 583         reply["CoreInfo"] = tr("<b>Quassel Core Version %1</b><br>"
 584                                "Built: %2<br>"
 585                                "Up %3d%4h%5m (since %6)").arg(Quassel::buildInfo().fancyVersionString)
 586                             .arg(Quassel::buildInfo().buildDate)
 587                             .arg(updays).arg(uphours, 2, 10, QChar('0')).arg(upmins, 2, 10, QChar('0')).arg(startTime().toString(Qt::TextDate));
 588
 589         reply["CoreFeatures"] = (int)Quassel::features();
 590
 591 #ifdef HAVE_SSL
 592         SslServer *sslServer = qobject_cast<SslServer *>(&_server);
 593         QSslSocket *sslSocket = qobject_cast<QSslSocket *>(socket);
 594         bool supportSsl = (bool)sslServer && (bool)sslSocket && sslServer->isCertValid();
 595 #else
 596         bool supportSsl = false;
 597 #endif
 598
 599 #ifndef QT_NO_COMPRESS
 600         bool supportsCompression = true;
 601 #else
 602         bool supportsCompression = false;
 603 #endif
 604
 605         reply["SupportSsl"] = supportSsl;
 606         reply["SupportsCompression"] = supportsCompression;
 607         // switch to ssl/compression after client has been informed about our capabilities (see below)
 608
 609         reply["LoginEnabled"] = true;
 610
 611         // check if we are configured, start wizard otherwise
 612         if (!_configured) {
 613             reply["Configured"] = false;
 614             QList<QVariant> backends;
 615             foreach(Storage *backend, _storageBackends.values()) {
 616                 QVariantMap v;
 617                 v["DisplayName"] = backend->displayName();
 618                 v["Description"] = backend->description();
 619                 v["SetupKeys"] = backend->setupKeys();
 620                 v["SetupDefaults"] = backend->setupDefaults();
 621                 backends.append(v);
 622             }
 623             reply["StorageBackends"] = backends;
 624             reply["LoginEnabled"] = false;
 625         }
 626         else {
 627             reply["Configured"] = true;
 628         }
 629         clientInfo[socket] = msg; // store for future reference
 630         reply["MsgType"] = "ClientInitAck";
 631         SignalProxy::writeDataToDevice(socket, reply);
 632         socket->flush(); // ensure that the write cache is flushed before we switch to ssl
 633
 634 #ifdef HAVE_SSL
 635         // after we told the client that we are ssl capable we switch to ssl mode
 636         if (supportSsl && msg["UseSsl"].toBool()) {
 637             qDebug() << qPrintable(tr("Starting TLS for Client:"))  << qPrintable(socket->peerAddress().toString());
 638             connect(sslSocket, SIGNAL(sslErrors(const QList<QSslError> &)), this, SLOT(sslErrors(const QList<QSslError> &)));
 639             sslSocket->startServerEncryption();
 640         }
 641 #endif
 642
 643 #ifndef QT_NO_COMPRESS
 644         if (supportsCompression && msg["UseCompression"].toBool()) {
 645             socket->setProperty("UseCompression", true);
 646             qDebug() << "Using compression for Client:" << qPrintable(socket->peerAddress().toString());
 647         }
 648 #endif
 649     }
 650     else {
 651         // for the rest, we need an initialized connection
 652         if (!clientInfo.contains(socket)) {
 653             QVariantMap reply;
 654             reply["MsgType"] = "ClientLoginReject";
 655             reply["Error"] = tr("<b>Client not initialized!</b><br>You need to send an init message before trying to login.");
 656             SignalProxy::writeDataToDevice(socket, reply);
 657             qWarning() << qPrintable(tr("Client")) << qPrintable(socket->peerAddress().toString()) << qPrintable(tr("did not send an init message before trying to login, rejecting."));
 658             socket->close(); return;
 659         }
 660         if (msg["MsgType"] == "CoreSetupData") {
 661             QVariantMap reply;
 662             QString result = setupCore(msg["SetupData"].toMap());
 663             if (!result.isEmpty()) {
 664                 reply["MsgType"] = "CoreSetupReject";
 665                 reply["Error"] = result;
 666             }
 667             else {
 668                 reply["MsgType"] = "CoreSetupAck";
 669             }
 670             SignalProxy::writeDataToDevice(socket, reply);
 671         }
 672         else if (msg["MsgType"] == "ClientLogin") {
 673             QVariantMap reply;
 674             UserId uid = _storage->validateUser(msg["User"].toString(), msg["Password"].toString());
 675             if (uid == 0) {
 676                 reply["MsgType"] = "ClientLoginReject";
 677                 reply["Error"] = tr("<b>Invalid username or password!</b><br>The username/password combination you supplied could not be found in the database.");
 678                 SignalProxy::writeDataToDevice(socket, reply);
 679                 return;
 680             }
 681             reply["MsgType"] = "ClientLoginAck";
 682             SignalProxy::writeDataToDevice(socket, reply);
 683             quInfo() << qPrintable(tr("Client")) << qPrintable(socket->peerAddress().toString()) << qPrintable(tr("initialized and authenticated successfully as \"%1\" (UserId: %2).").arg(msg["User"].toString()).arg(uid.toInt()));
 684             setupClientSession(socket, uid);
 685         }
 686     }
 687 }
 688
 689
 690 // Potentially called during the initialization phase (before handing the connection off to the session)
 691 void Core::clientDisconnected()
 692 {
 693     QTcpSocket *socket = qobject_cast<QTcpSocket *>(sender());
 694     if (socket) {
 695         // here it's safe to call methods on socket!
 696         quInfo() << qPrintable(tr("Non-authed client disconnected.")) << qPrintable(socket->peerAddress().toString());
 697         blocksizes.remove(socket);
 698         clientInfo.remove(socket);
 699         socket->deleteLater();
 700     }
 701     else {
 702         // we have to crawl through the hashes and see if we find a victim to remove
 703         qDebug() << qPrintable(tr("Non-authed client disconnected. (socket allready destroyed)"));
 704
 705         // DO NOT CALL ANY METHODS ON socket!!
 706         socket = static_cast<QTcpSocket *>(sender());
 707
 708         QHash<QTcpSocket *, quint32>::iterator blockSizeIter = blocksizes.begin();
 709         while (blockSizeIter != blocksizes.end()) {
 710             if (blockSizeIter.key() == socket) {
 711                 blockSizeIter = blocksizes.erase(blockSizeIter);
 712             }
 713             else {
 714                 blockSizeIter++;
 715             }
 716         }
 717
 718         QHash<QTcpSocket *, QVariantMap>::iterator clientInfoIter = clientInfo.begin();
 719         while (clientInfoIter != clientInfo.end()) {
 720             if (clientInfoIter.key() == socket) {
 721                 clientInfoIter = clientInfo.erase(clientInfoIter);
 722             }
 723             else {
 724                 clientInfoIter++;
 725             }
 726         }
 727     }
 728
 729     // make server listen again if still not configured
 730     if (!_configured) {
 731         startListening();
 732     }
 733
 734     // TODO remove unneeded sessions - if necessary/possible...
 735     // Suggestion: kill sessions if they are not connected to any network and client.
 736 }
 737
 738
 739 void Core::setupClientSession(QTcpSocket *socket, UserId uid)
 740 {
 741     // From now on everything is handled by the client session
 742     disconnect(socket, 0, this, 0);
 743     socket->flush();
 744     blocksizes.remove(socket);
 745     clientInfo.remove(socket);
 746
 747     // Find or create session for validated user
 748     SessionThread *session;
 749     if (sessions.contains(uid)) {
 750         session = sessions[uid];
 751     }
 752     else {
 753         session = createSession(uid);
 754         if (!session) {
 755             qWarning() << qPrintable(tr("Could not initialize session for client:")) << qPrintable(socket->peerAddress().toString());
 756             socket->close();
 757             return;
 758         }
 759     }
 760
 761     // as we are currently handling an event triggered by incoming data on this socket
 762     // it is unsafe to directly move the socket to the client thread.
 763     QCoreApplication::postEvent(this, new AddClientEvent(socket, uid));
 764 }
 765
 766
 767 void Core::customEvent(QEvent *event)
 768 {
 769     if (event->type() == AddClientEventId) {
 770         AddClientEvent *addClientEvent = static_cast<AddClientEvent *>(event);
 771         addClientHelper(addClientEvent->socket, addClientEvent->userId);
 772         return;
 773     }
 774 }
 775
 776
 777 void Core::addClientHelper(QTcpSocket *socket, UserId uid)
 778 {
 779     // Find or create session for validated user
 780     if (!sessions.contains(uid)) {
 781         qWarning() << qPrintable(tr("Could not find a session for client:")) << qPrintable(socket->peerAddress().toString());
 782         socket->close();
 783         return;
 784     }
 785
 786     SessionThread *session = sessions[uid];
 787     session->addClient(socket);
 788 }
 789
 790
 791 void Core::setupInternalClientSession(SignalProxy *proxy)
 792 {
 793     if (!_configured) {
 794         stopListening();
 795         setupCoreForInternalUsage();
 796     }
 797
 798     UserId uid;
 799     if (_storage) {
 800         uid = _storage->internalUser();
 801     }
 802     else {
 803         qWarning() << "Core::setupInternalClientSession(): You're trying to run monolithic Quassel with an unusable Backend! Go fix it!";
 804         return;
 805     }
 806
 807     // Find or create session for validated user
 808     SessionThread *sess;
 809     if (sessions.contains(uid))
 810         sess = sessions[uid];
 811     else
 812         sess = createSession(uid);
 813     sess->addClient(proxy);
 814 }
 815
 816
 817 SessionThread *Core::createSession(UserId uid, bool restore)
 818 {
 819     if (sessions.contains(uid)) {
 820         qWarning() << "Calling createSession() when a session for the user already exists!";
 821         return 0;
 822     }
 823     SessionThread *sess = new SessionThread(uid, restore, this);
 824     sessions[uid] = sess;
 825     sess->start();
 826     return sess;
 827 }
 828
 829
 830 #ifdef HAVE_SSL
 831 void Core::sslErrors(const QList<QSslError> &errors)
 832 {
 833     Q_UNUSED(errors);
 834     QSslSocket *socket = qobject_cast<QSslSocket *>(sender());
 835     if (socket)
 836         socket->ignoreSslErrors();
 837 }
 838
 839
 840 #endif
 841
 842 void Core::socketError(QAbstractSocket::SocketError err)
 843 {
 844     QAbstractSocket *socket = qobject_cast<QAbstractSocket *>(sender());
 845     if (socket && err != QAbstractSocket::RemoteHostClosedError)
 846         qWarning() << "Core::socketError()" << socket << err << socket->errorString();
 847 }
 848
 849
 850 // migration / backend selection
 851 bool Core::selectBackend(const QString &backend)
 852 {
 853     // reregister all storage backends
 854     registerStorageBackends();
 855     if (!_storageBackends.contains(backend)) {
 856         qWarning() << qPrintable(QString("Core::selectBackend(): unsupported backend: %1").arg(backend));
 857         qWarning() << "    supported backends are:" << qPrintable(QStringList(_storageBackends.keys()).join(", "));
 858         return false;
 859     }
 860
 861     Storage *storage = _storageBackends[backend];
 862     QVariantMap settings = promptForSettings(storage);
 863
 864     Storage::State storageState = storage->init(settings);
 865     switch (storageState) {
 866     case Storage::IsReady:
 867         saveBackendSettings(backend, settings);
 868         qWarning() << "Switched backend to:" << qPrintable(backend);
 869         qWarning() << "Backend already initialized. Skipping Migration";
 870         return true;
 871     case Storage::NotAvailable:
 872         qCritical() << "Backend is not available:" << qPrintable(backend);
 873         return false;
 874     case Storage::NeedsSetup:
 875         if (!storage->setup(settings)) {
 876             qWarning() << qPrintable(QString("Core::selectBackend(): unable to setup backend: %1").arg(backend));
 877             return false;
 878         }
 879
 880         if (storage->init(settings) != Storage::IsReady) {
 881             qWarning() << qPrintable(QString("Core::migrateBackend(): unable to initialize backend: %1").arg(backend));
 882             return false;
 883         }
 884
 885         saveBackendSettings(backend, settings);
 886         qWarning() << "Switched backend to:" << qPrintable(backend);
 887         break;
 888     }
 889
 890     // let's see if we have a current storage object we can migrate from
 891     AbstractSqlMigrationReader *reader = getMigrationReader(_storage);
 892     AbstractSqlMigrationWriter *writer = getMigrationWriter(storage);
 893     if (reader && writer) {
 894         qDebug() << qPrintable(QString("Migrating Storage backend %1 to %2...").arg(_storage->displayName(), storage->displayName()));
 895         delete _storage;
 896         _storage = 0;
 897         delete storage;
 898         storage = 0;
 899         if (reader->migrateTo(writer)) {
 900             qDebug() << "Migration finished!";
 901             saveBackendSettings(backend, settings);
 902             return true;
 903         }
 904         return false;
 905         qWarning() << qPrintable(QString("Core::migrateDb(): unable to migrate storage backend! (No migration writer for %1)").arg(backend));
 906     }
 907
 908     // inform the user why we cannot merge
 909     if (!_storage) {
 910         qWarning() << "No currently active backend. Skipping migration.";
 911     }
 912     else if (!reader) {
 913         qWarning() << "Currently active backend does not support migration:" << qPrintable(_storage->displayName());
 914     }
 915     if (writer) {
 916         qWarning() << "New backend does not support migration:" << qPrintable(backend);
 917     }
 918
 919     // so we were unable to merge, but let's create a user \o/
 920     _storage = storage;
 921     createUser();
 922     return true;
 923 }
 924
 925
 926 void Core::createUser()
 927 {
 928     QTextStream out(stdout);
 929     QTextStream in(stdin);
 930     out << "Add a new user:" << endl;
 931     out << "Username: ";
 932     out.flush();
 933     QString username = in.readLine().trimmed();
 934
 935     disableStdInEcho();
 936     out << "Password: ";
 937     out.flush();
 938     QString password = in.readLine().trimmed();
 939     out << endl;
 940     out << "Repeat Password: ";
 941     out.flush();
 942     QString password2 = in.readLine().trimmed();
 943     out << endl;
 944     enableStdInEcho();
 945
 946     if (password != password2) {
 947         qWarning() << "Passwords don't match!";
 948         return;
 949     }
 950     if (password.isEmpty()) {
 951         qWarning() << "Password is empty!";
 952         return;
 953     }
 954
 955     if (_configured && _storage->addUser(username, password).isValid()) {
 956         out << "Added user " << username << " successfully!" << endl;
 957     }
 958     else {
 959         qWarning() << "Unable to add user:" << qPrintable(username);
 960     }
 961 }
 962
 963
 964 void Core::changeUserPass(const QString &username)
 965 {
 966     QTextStream out(stdout);
 967     QTextStream in(stdin);
 968     UserId userId = _storage->getUserId(username);
 969     if (!userId.isValid()) {
 970         out << "User " << username << " does not exist." << endl;
 971         return;
 972     }
 973
 974     out << "Change password for user: " << username << endl;
 975
 976     disableStdInEcho();
 977     out << "New Password: ";
 978     out.flush();
 979     QString password = in.readLine().trimmed();
 980     out << endl;
 981     out << "Repeat Password: ";
 982     out.flush();
 983     QString password2 = in.readLine().trimmed();
 984     out << endl;
 985     enableStdInEcho();
 986
 987     if (password != password2) {
 988         qWarning() << "Passwords don't match!";
 989         return;
 990     }
 991     if (password.isEmpty()) {
 992         qWarning() << "Password is empty!";
 993         return;
 994     }
 995
 996     if (_configured && _storage->updateUser(userId, password)) {
 997         out << "Password changed successfully!" << endl;
 998     }
 999     else {
1000         qWarning() << "Failed to change password!";
1001     }
1002 }
1003
1004
1005 AbstractSqlMigrationReader *Core::getMigrationReader(Storage *storage)
1006 {
1007     if (!storage)
1008         return 0;
1009
1010     AbstractSqlStorage *sqlStorage = qobject_cast<AbstractSqlStorage *>(storage);
1011     if (!sqlStorage) {
1012         qDebug() << "Core::migrateDb(): only SQL based backends can be migrated!";
1013         return 0;
1014     }
1015
1016     return sqlStorage->createMigrationReader();
1017 }
1018
1019
1020 AbstractSqlMigrationWriter *Core::getMigrationWriter(Storage *storage)
1021 {
1022     if (!storage)
1023         return 0;
1024
1025     AbstractSqlStorage *sqlStorage = qobject_cast<AbstractSqlStorage *>(storage);
1026     if (!sqlStorage) {
1027         qDebug() << "Core::migrateDb(): only SQL based backends can be migrated!";
1028         return 0;
1029     }
1030
1031     return sqlStorage->createMigrationWriter();
1032 }
1033
1034
1035 void Core::saveBackendSettings(const QString &backend, const QVariantMap &settings)
1036 {
1037     QVariantMap dbsettings;
1038     dbsettings["Backend"] = backend;
1039     dbsettings["ConnectionProperties"] = settings;
1040     CoreSettings().setStorageSettings(dbsettings);
1041 }
1042
1043
1044 QVariantMap Core::promptForSettings(const Storage *storage)
1045 {
1046     QVariantMap settings;
1047
1048     QStringList keys = storage->setupKeys();
1049     if (keys.isEmpty())
1050         return settings;
1051
1052     QTextStream out(stdout);
1053     QTextStream in(stdin);
1054     out << "Default values are in brackets" << endl;
1055
1056     QVariantMap defaults = storage->setupDefaults();
1057     QString value;
1058     foreach(QString key, keys) {
1059         QVariant val;
1060         if (defaults.contains(key)) {
1061             val = defaults[key];
1062         }
1063         out << key;
1064         if (!val.toString().isEmpty()) {
1065             out << " (" << val.toString() << ")";
1066         }
1067         out << ": ";
1068         out.flush();
1069
1070         bool noEcho = QString("password").toLower().startsWith(key.toLower());
1071         if (noEcho) {
1072             disableStdInEcho();
1073         }
1074         value = in.readLine().trimmed();
1075         if (noEcho) {
1076             out << endl;
1077             enableStdInEcho();
1078         }
1079
1080         if (!value.isEmpty()) {
1081             switch (defaults[key].type()) {
1082             case QVariant::Int:
1083                 val = QVariant(value.toInt());
1084                 break;
1085             default:
1086                 val = QVariant(value);
1087             }
1088         }
1089         settings[key] = val;
1090     }
1091     return settings;
1092 }
1093
1094
1095 #ifdef Q_OS_WIN32
1096 void Core::stdInEcho(bool on)
1097 {
1098     HANDLE hStdin = GetStdHandle(STD_INPUT_HANDLE);
1099     DWORD mode = 0;
1100     GetConsoleMode(hStdin, &mode);
1101     if (on)
1102         mode |= ENABLE_ECHO_INPUT;
1103     else
1104         mode &= ~ENABLE_ECHO_INPUT;
1105     SetConsoleMode(hStdin, mode);
1106 }
1107
1108
1109 #else
1110 void Core::stdInEcho(bool on)
1111 {
1112     termios t;
1113     tcgetattr(STDIN_FILENO, &t);
1114     if (on)
1115         t.c_lflag |= ECHO;
1116     else
1117         t.c_lflag &= ~ECHO;
1118     tcsetattr(STDIN_FILENO, TCSANOW, &t);
1119 }
1120
1121
1122 #endif /* Q_OS_WIN32 */