/***************************************************************************
- * Copyright (C) 2005-2013 by the Quassel Project *
+ * Copyright (C) 2005-2018 by the Quassel Project *
* devel@quassel-irc.org *
* *
* This program is free software; you can redistribute it and/or modify *
#include "coreauthhandler.h"
#ifdef HAVE_SSL
-# include <QSslSocket>
+# include <QSslSocket>
#endif
#include "core.h"
-#include "logger.h"
-
-#include "protocols/legacy/legacypeer.h"
+#include "logmessage.h"
using namespace Protocol;
-CoreAuthHandler::CoreAuthHandler(QTcpSocket *socket, QObject *parent)
+CoreAuthHandler::CoreAuthHandler(QTcpSocket* socket, QObject* parent)
: AuthHandler(parent)
- , _peer(0)
+ , _peer(nullptr)
+ , _magicReceived(false)
+ , _legacy(false)
, _clientRegistered(false)
+ , _connectionFeatures(0)
{
setSocket(socket);
+ connect(socket, &QIODevice::readyRead, this, &CoreAuthHandler::onReadyRead);
+
+ // TODO: Timeout for the handshake phase
+}
+
+void CoreAuthHandler::onReadyRead()
+{
+ if (socket()->bytesAvailable() < 4)
+ return;
+
+ // once we have selected a peer, we certainly don't want to read more data!
+ if (_peer)
+ return;
+
+ if (!_magicReceived) {
+ quint32 magic;
+ socket()->peek((char*)&magic, 4);
+ magic = qFromBigEndian<quint32>(magic);
+
+ if ((magic & 0xffffff00) != Protocol::magic) {
+ // no magic, assume legacy protocol
+ qDebug() << "Legacy client detected, switching to compatibility mode";
+ _legacy = true;
+ RemotePeer* peer = PeerFactory::createPeer(PeerFactory::ProtoDescriptor(Protocol::LegacyProtocol, 0),
+ this,
+ socket(),
+ Compressor::NoCompression,
+ this);
+ connect(peer, &RemotePeer::protocolVersionMismatch, this, &CoreAuthHandler::onProtocolVersionMismatch);
+ setPeer(peer);
+ return;
+ }
+
+ _magicReceived = true;
+ quint8 features = magic & 0xff;
+ // figure out which connection features we'll use based on the client's support
+ if (Core::sslSupported() && (features & Protocol::Encryption))
+ _connectionFeatures |= Protocol::Encryption;
+ if (features & Protocol::Compression)
+ _connectionFeatures |= Protocol::Compression;
- // TODO: protocol detection
+ socket()->read((char*)&magic, 4); // read the 4 bytes we've just peeked at
+ }
+
+ // read the list of protocols supported by the client
+ while (socket()->bytesAvailable() >= 4 && _supportedProtos.size() < 16) { // sanity check
+ quint32 data;
+ socket()->read((char*)&data, 4);
+ data = qFromBigEndian<quint32>(data);
+
+ auto type = static_cast<Protocol::Type>(data & 0xff);
+ auto protoFeatures = static_cast<quint16>(data >> 8 & 0xffff);
+ _supportedProtos.append(PeerFactory::ProtoDescriptor(type, protoFeatures));
+
+ if (data >= 0x80000000) { // last protocol
+ Compressor::CompressionLevel level;
+ if (_connectionFeatures & Protocol::Compression)
+ level = Compressor::BestCompression;
+ else
+ level = Compressor::NoCompression;
+
+ RemotePeer* peer = PeerFactory::createPeer(_supportedProtos, this, socket(), level, this);
+ if (!peer) {
+ qWarning() << "Received invalid handshake data from client" << socket()->peerAddress().toString();
+ close();
+ return;
+ }
+
+ if (peer->protocol() == Protocol::LegacyProtocol) {
+ _legacy = true;
+ connect(peer, &RemotePeer::protocolVersionMismatch, this, &CoreAuthHandler::onProtocolVersionMismatch);
+ }
+ setPeer(peer);
- // FIXME: make sure _peer gets deleted
- // TODO: socket ownership goes to the peer! (-> use shared ptr later...)
- _peer = new LegacyPeer(this, socket, this);
- // only in compat mode
- connect(_peer, SIGNAL(protocolVersionMismatch(int,int)), SLOT(onProtocolVersionMismatch(int,int)));
+ // inform the client
+ quint32 reply = peer->protocol() | peer->enabledFeatures() << 8 | _connectionFeatures << 24;
+ reply = qToBigEndian<quint32>(reply);
+ socket()->write((char*)&reply, 4);
+ socket()->flush();
+
+ if (!_legacy && (_connectionFeatures & Protocol::Encryption))
+ startSsl(); // legacy peer enables it later
+ return;
+ }
+ }
}
+void CoreAuthHandler::setPeer(RemotePeer* peer)
+{
+ qDebug().nospace() << "Using " << qPrintable(peer->protocolName()) << "...";
+
+ _peer = peer;
+ disconnect(socket(), &QIODevice::readyRead, this, &CoreAuthHandler::onReadyRead);
+}
// only in compat mode
void CoreAuthHandler::onProtocolVersionMismatch(int actual, int expected)
qWarning() << qPrintable(tr("Client")) << _peer->description() << qPrintable(tr("too old, rejecting."));
QString errorString = tr("<b>Your Quassel Client is too old!</b><br>"
"This core needs at least client/core protocol version %1 (got: %2).<br>"
- "Please consider upgrading your client.").arg(expected, actual);
+ "Please consider upgrading your client.")
+ .arg(expected, actual);
_peer->dispatch(ClientDenied(errorString));
_peer->close();
}
-
-void CoreAuthHandler::startSsl()
-{
-#ifdef HAVE_SSL
- QSslSocket *sslSocket = qobject_cast<QSslSocket *>(socket());
- Q_ASSERT(sslSocket);
-
- qDebug() << qPrintable(tr("Starting encryption for Client:")) << _peer->description();
- connect(sslSocket, SIGNAL(sslErrors(const QList<QSslError> &)), SLOT(onSslErrors()));
- sslSocket->startServerEncryption();
-#endif
-}
-
-
-#ifdef HAVE_SSL
-void CoreAuthHandler::onSslErrors()
-{
- QSslSocket *sslSocket = qobject_cast<QSslSocket *>(socket());
- Q_ASSERT(sslSocket);
- sslSocket->ignoreSslErrors();
-}
-#endif
-
-
bool CoreAuthHandler::checkClientRegistered()
{
if (!_clientRegistered) {
- qWarning() << qPrintable(tr("Client")) << qPrintable(socket()->peerAddress().toString()) << qPrintable(tr("did not send an init message before trying to login, rejecting."));
- _peer->dispatch(ClientDenied(tr("<b>Client not initialized!</b><br>You need to send an init message before trying to login.")));
+ qWarning() << qPrintable(tr("Client")) << qPrintable(socket()->peerAddress().toString())
+ << qPrintable(tr("did not send a registration message before trying to login, rejecting."));
+ _peer->dispatch(
+ ClientDenied(tr("<b>Client not initialized!</b><br>You need to send a registration message before trying to login.")));
_peer->close();
return false;
}
return true;
}
-
-void CoreAuthHandler::handle(const RegisterClient &msg)
+void CoreAuthHandler::handle(const RegisterClient& msg)
{
- // TODO: only in compat mode
- bool useSsl = false;
-#ifdef HAVE_SSL
- if (Core::sslSupported() && msg.sslSupported)
- useSsl = true;
-#endif
+ bool useSsl;
+ if (_legacy)
+ useSsl = Core::sslSupported() && msg.sslSupported;
+ else
+ useSsl = _connectionFeatures & Protocol::Encryption;
+
+ if (Quassel::isOptionSet("require-ssl") && !useSsl && !_peer->isLocal()) {
+ quInfo() << qPrintable(tr("SSL required but non-SSL connection attempt from %1").arg(socket()->peerAddress().toString()));
+ _peer->dispatch(ClientDenied(tr("<b>SSL is required!</b><br>You need to use SSL in order to connect to this core.")));
+ _peer->close();
+ return;
+ }
+
+ _peer->setFeatures(std::move(msg.features));
+ _peer->setBuildDate(msg.buildDate);
+ _peer->setClientVersion(msg.clientVersion);
+
QVariantList backends;
+ QVariantList authenticators;
bool configured = Core::isConfigured();
- if (!configured)
+ if (!configured) {
backends = Core::backendInfo();
+ if (_peer->hasFeature(Quassel::Feature::Authenticators)) {
+ authenticators = Core::authenticatorInfo();
+ }
+ }
+
+ _peer->dispatch(ClientRegistered(Quassel::Features{}, configured, backends, authenticators, useSsl));
- _peer->dispatch(ClientRegistered(Quassel::features(), configured, backends, useSsl, Core::instance()->startTime()));
- // TODO: only in compat mode
- if (useSsl)
+ // useSsl is only used for the legacy protocol
+ if (_legacy && useSsl)
startSsl();
_clientRegistered = true;
}
-
-void CoreAuthHandler::handle(const SetupData &msg)
+void CoreAuthHandler::handle(const SetupData& msg)
{
if (!checkClientRegistered())
return;
- QString result = Core::setup(msg.adminUser, msg.adminPassword, msg.backend, msg.setupData);
+ // The default parameter to authenticator is Database.
+ // Maybe this should be hardcoded elsewhere, i.e. as a define.
+ QString authenticator = msg.authenticator;
+ quInfo() << "[" << authenticator << "]";
+ if (authenticator.trimmed().isEmpty()) {
+ authenticator = QString("Database");
+ }
+
+ QString result = Core::setup(msg.adminUser, msg.adminPassword, msg.backend, msg.setupData, authenticator, msg.authSetupData);
if (!result.isEmpty())
_peer->dispatch(SetupFailed(result));
else
_peer->dispatch(SetupDone());
}
-
-void CoreAuthHandler::handle(const Login &msg)
+void CoreAuthHandler::handle(const Login& msg)
{
if (!checkClientRegistered())
return;
+ if (!Core::isConfigured()) {
+ qWarning() << qPrintable(tr("Client")) << qPrintable(socket()->peerAddress().toString())
+ << qPrintable(tr("attempted to login before the core was configured, rejecting."));
+ _peer->dispatch(ClientDenied(
+ tr("<b>Attempted to login before core was configured!</b><br>The core must be configured before attempting to login.")));
+ return;
+ }
+
+ // First attempt local auth using the real username and password.
+ // If that fails, move onto the auth provider.
UserId uid = Core::validateUser(msg.user, msg.password);
if (uid == 0) {
- _peer->dispatch(LoginFailed(tr("<b>Invalid username or password!</b><br>The username/password combination you supplied could not be found in the database.")));
+ uid = Core::authenticateUser(msg.user, msg.password);
+ }
+
+ if (uid == 0) {
+ quInfo() << qPrintable(tr("Invalid login attempt from %1 as \"%2\"").arg(socket()->peerAddress().toString(), msg.user));
+ _peer->dispatch(LoginFailed(tr(
+ "<b>Invalid username or password!</b><br>The username/password combination you supplied could not be found in the database.")));
return;
}
_peer->dispatch(LoginSuccess());
- quInfo() << qPrintable(tr("Client %1 initialized and authenticated successfully as \"%2\" (UserId: %3).").arg(socket()->peerAddress().toString(), msg.user, QString::number(uid.toInt())));
+ quInfo() << qPrintable(tr("Client %1 initialized and authenticated successfully as \"%2\" (UserId: %3).")
+ .arg(socket()->peerAddress().toString(), msg.user, QString::number(uid.toInt())));
- disconnect(socket(), 0, this, 0);
- disconnect(_peer, 0, this, 0);
- _peer->setParent(0); // Core needs to take care of this one now!
+ const auto& clientFeatures = _peer->features();
+ auto unsupported = clientFeatures.toStringList(false);
+ if (!unsupported.isEmpty()) {
+ if (unsupported.contains("NoFeatures"))
+ quInfo() << qPrintable(tr("Client does not support extended features."));
+ else
+ quInfo() << qPrintable(tr("Client does not support the following features: %1").arg(unsupported.join(", ")));
+ }
+
+ if (!clientFeatures.unknownFeatures().isEmpty()) {
+ quInfo() << qPrintable(tr("Client supports unknown features: %1").arg(clientFeatures.unknownFeatures().join(", ")));
+ }
+ disconnect(socket(), nullptr, this, nullptr);
+ disconnect(_peer, nullptr, this, nullptr);
+ _peer->setParent(nullptr); // Core needs to take care of this one now!
+
+ socket()->flush(); // Make sure all data is sent before handing over the peer (and socket) to the session thread (bug 682)
emit handshakeComplete(_peer, uid);
}
+
+/*** SSL Stuff ***/
+
+void CoreAuthHandler::startSsl()
+{
+#ifdef HAVE_SSL
+ auto* sslSocket = qobject_cast<QSslSocket*>(socket());
+ Q_ASSERT(sslSocket);
+
+ qDebug() << qPrintable(tr("Starting encryption for Client:")) << _peer->description();
+ connect(sslSocket, selectOverload<const QList<QSslError>&>(&QSslSocket::sslErrors), this, &CoreAuthHandler::onSslErrors);
+ sslSocket->flush(); // ensure that the write cache is flushed before we switch to ssl (bug 682)
+ sslSocket->startServerEncryption();
+#endif /* HAVE_SSL */
+}
+
+#ifdef HAVE_SSL
+void CoreAuthHandler::onSslErrors()
+{
+ auto* sslSocket = qobject_cast<QSslSocket*>(socket());
+ Q_ASSERT(sslSocket);
+ sslSocket->ignoreSslErrors();
+}
+#endif
projects / quassel.git / blobdiff