+/***************************************************************************
+ * Copyright (C) 2005-2013 by the Quassel Project *
+ * devel@quassel-irc.org *
+ * *
+ * This program is free software; you can redistribute it and/or modify *
+ * it under the terms of the GNU General Public License as published by *
+ * the Free Software Foundation; either version 2 of the License, or *
+ * (at your option) version 3. *
+ * *
+ * This program is distributed in the hope that it will be useful, *
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of *
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
+ * GNU General Public License for more details. *
+ * *
+ * You should have received a copy of the GNU General Public License *
+ * along with this program; if not, write to the *
+ * Free Software Foundation, Inc., *
+ * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. *
+ ***************************************************************************/
+
+#include "clientauthhandler.h"
+
+// TODO: support system application proxy (new in Qt 4.6)
+
+#ifdef HAVE_SSL
+ #include <QSslSocket>
+#else
+ #include <QTcpSocket>
+#endif
+
+#include "client.h"
+#include "clientsettings.h"
+
+#include "protocols/legacy/legacypeer.h"
+
+using namespace Protocol;
+
+ClientAuthHandler::ClientAuthHandler(CoreAccount account, QObject *parent)
+ : AuthHandler(parent),
+ _peer(0),
+ _account(account)
+{
+
+}
+
+
+void ClientAuthHandler::connectToCore()
+{
+ CoreAccountSettings s;
+
+#ifdef HAVE_SSL
+ QSslSocket *socket = new QSslSocket(this);
+ // make sure the warning is shown if we happen to connect without SSL support later
+ s.setAccountValue("ShowNoClientSslWarning", true);
+#else
+ if (_account.useSsl()) {
+ if (s.accountValue("ShowNoClientSslWarning", true).toBool()) {
+ bool accepted = false;
+ emit handleNoSslInClient(&accepted);
+ if (!accepted) {
+ emit errorMessage(tr("Unencrypted connection canceled"));
+ return;
+ }
+ s.setAccountValue("ShowNoClientSslWarning", false);
+ }
+ }
+ QTcpSocket *socket = new QTcpSocket(this);
+#endif
+
+// TODO: Handle system proxy
+#ifndef QT_NO_NETWORKPROXY
+ if (_account.useProxy()) {
+ QNetworkProxy proxy(_account.proxyType(), _account.proxyHostName(), _account.proxyPort(), _account.proxyUser(), _account.proxyPassword());
+ socket->setProxy(proxy);
+ }
+#endif
+
+ setSocket(socket);
+ // handled by the base class for now; may need to rethink for protocol detection
+ //connect(socket, SIGNAL(error(QAbstractSocket::SocketError)), SLOT(onSocketError(QAbstractSocket::SocketError)));
+ //connect(socket, SIGNAL(stateChanged(QAbstractSocket::SocketState)), SLOT(onSocketStateChanged(QAbstractSocket::SocketState)));
+ connect(socket, SIGNAL(connected()), SLOT(onSocketConnected()));
+
+ emit statusMessage(tr("Connecting to %1...").arg(_account.accountName()));
+ socket->connectToHost(_account.hostName(), _account.port());
+}
+
+
+// TODO: handle protocol detection
+// This method might go away anyway, unless we really need our own states...
+/*
+void ClientAuthHandler::onSocketStateChanged(QAbstractSocket::SocketState socketState)
+{
+ qDebug() << Q_FUNC_INFO << socketState;
+ QString text;
+ AuthHandler::State state = UnconnectedState;
+
+ switch(socketState) {
+ case QAbstractSocket::UnconnectedState:
+ text = tr("Disconnected");
+ state = UnconnectedState;
+ break;
+ case QAbstractSocket::HostLookupState:
+ text = tr("Looking up %1...").arg(_account.hostName());
+ state = HostLookupState;
+ break;
+ case QAbstractSocket::ConnectingState:
+ text = tr("Connecting to %1...").arg(_account.hostName());
+ state = ConnectingState;
+ break;
+ case QAbstractSocket::ConnectedState:
+ text = tr("Connected to %1").arg(_account.hostName());
+ state = ConnectedState;
+ break;
+ case QAbstractSocket::ClosingState:
+ text = tr("Disconnecting from %1...").arg(_account.hostName());
+ state = ClosingState;
+ break;
+ default:
+ break;
+ }
+
+ if (!text.isEmpty()) {
+ setState(state);
+ emit statusMessage(text);
+ }
+}
+*/
+
+// TODO: handle protocol detection
+/*
+void ClientAuthHandler::onSocketError(QAbstractSocket::SocketError error)
+{
+ emit socketError(error, socket()->errorString());
+}
+*/
+
+void ClientAuthHandler::onSocketConnected()
+{
+ // TODO: protocol detection
+
+ if (_peer) {
+ qWarning() << Q_FUNC_INFO << "Peer already exists!";
+ return;
+ }
+
+ _peer = new LegacyPeer(this, socket(), this);
+
+ connect(_peer, SIGNAL(transferProgress(int,int)), SIGNAL(transferProgress(int,int)));
+
+ // compat only
+ connect(_peer, SIGNAL(protocolVersionMismatch(int,int)), SLOT(onProtocolVersionMismatch(int,int)));
+
+ emit statusMessage(tr("Synchronizing to core..."));
+
+ bool useSsl = false;
+#ifdef HAVE_SSL
+ useSsl = _account.useSsl();
+#endif
+
+ _peer->dispatch(RegisterClient(Quassel::buildInfo().fancyVersionString, useSsl));
+}
+
+
+void ClientAuthHandler::onProtocolVersionMismatch(int actual, int expected)
+{
+ emit errorPopup(tr("<b>The Quassel Core you are trying to connect to is too old!</b><br>"
+ "We need at least protocol v%1, but the core speaks v%2 only.").arg(expected, actual));
+ requestDisconnect();
+}
+
+
+void ClientAuthHandler::handle(const ClientDenied &msg)
+{
+ emit errorPopup(msg.errorString);
+ requestDisconnect();
+}
+
+
+void ClientAuthHandler::handle(const ClientRegistered &msg)
+{
+ _coreConfigured = msg.coreConfigured;
+ _backendInfo = msg.backendInfo;
+
+ Client::setCoreFeatures(static_cast<Quassel::Features>(msg.coreFeatures));
+
+#ifdef HAVE_SSL
+ CoreAccountSettings s;
+ if (_account.useSsl()) {
+ if (msg.sslSupported) {
+ // Make sure the warning is shown next time we don't have SSL in the core
+ s.setAccountValue("ShowNoCoreSslWarning", true);
+
+ QSslSocket *sslSocket = qobject_cast<QSslSocket *>(socket());
+ Q_ASSERT(sslSocket);
+ connect(sslSocket, SIGNAL(encrypted()), SLOT(onSslSocketEncrypted()));
+ connect(sslSocket, SIGNAL(sslErrors(QList<QSslError>)), SLOT(onSslErrors()));
+ qDebug() << "Starting encryption...";
+ sslSocket->flush();
+ sslSocket->startClientEncryption();
+ }
+ else {
+ if (s.accountValue("ShowNoCoreSslWarning", true).toBool()) {
+ bool accepted = false;
+ emit handleNoSslInCore(&accepted);
+ if (!accepted) {
+ requestDisconnect(tr("Unencrypted connection cancelled"));
+ return;
+ }
+ s.setAccountValue("ShowNoCoreSslWarning", false);
+ s.setAccountValue("SslCert", QString());
+ }
+ onConnectionReady();
+ }
+ return;
+ }
+#endif
+ // if we use SSL we wait for the next step until every SSL warning has been cleared
+ onConnectionReady();
+}
+
+
+#ifdef HAVE_SSL
+
+void ClientAuthHandler::onSslSocketEncrypted()
+{
+ QSslSocket *socket = qobject_cast<QSslSocket *>(sender());
+ Q_ASSERT(socket);
+
+ if (!socket->sslErrors().count()) {
+ // Cert is valid, so we don't want to store it as known
+ // That way, a warning will appear in case it becomes invalid at some point
+ CoreAccountSettings s;
+ s.setAccountValue("SSLCert", QString());
+ }
+
+ emit encrypted(true);
+ onConnectionReady();
+}
+
+
+void ClientAuthHandler::onSslErrors()
+{
+ QSslSocket *socket = qobject_cast<QSslSocket *>(sender());
+ Q_ASSERT(socket);
+
+ CoreAccountSettings s;
+ QByteArray knownDigest = s.accountValue("SslCert").toByteArray();
+
+ if (knownDigest != socket->peerCertificate().digest()) {
+ bool accepted = false;
+ bool permanently = false;
+ emit handleSslErrors(socket, &accepted, &permanently);
+
+ if (!accepted) {
+ requestDisconnect(tr("Unencrypted connection canceled"));
+ return;
+ }
+
+ if (permanently)
+ s.setAccountValue("SslCert", socket->peerCertificate().digest());
+ else
+ s.setAccountValue("SslCert", QString());
+ }
+
+ socket->ignoreSslErrors();
+}
+
+#endif /* HAVE_SSL */
+
+
+void ClientAuthHandler::onConnectionReady()
+{
+ emit connectionReady();
+ emit statusMessage(tr("Connected to %1").arg(_account.accountName()));
+
+ if (!_coreConfigured) {
+ // start wizard
+ emit startCoreSetup(_backendInfo);
+ }
+ else // TODO: check if we need LoginEnabled
+ login();
+}
+
+
+void ClientAuthHandler::setupCore(const SetupData &setupData)
+{
+ _peer->dispatch(setupData);
+}
+
+
+void ClientAuthHandler::handle(const SetupFailed &msg)
+{
+ emit coreSetupFailed(msg.errorString);
+}
+
+
+void ClientAuthHandler::handle(const SetupDone &msg)
+{
+ Q_UNUSED(msg)
+
+ emit coreSetupSuccessful();
+}
+
+
+void ClientAuthHandler::login(const QString &user, const QString &password, bool remember)
+{
+ _account.setUser(user);
+ _account.setPassword(password);
+ _account.setStorePassword(remember);
+ login();
+}
+
+
+void ClientAuthHandler::login(const QString &previousError)
+{
+ emit statusMessage(tr("Logging in..."));
+ if (_account.user().isEmpty() || _account.password().isEmpty() || !previousError.isEmpty()) {
+ bool valid = false;
+ emit userAuthenticationRequired(&_account, &valid, previousError); // *must* be a synchronous call
+ if (!valid || _account.user().isEmpty() || _account.password().isEmpty()) {
+ requestDisconnect(tr("Login canceled"));
+ return;
+ }
+ }
+
+ _peer->dispatch(Login(_account.user(), _account.password()));
+}
+
+
+void ClientAuthHandler::handle(const LoginFailed &msg)
+{
+ login(msg.errorString);
+}
+
+
+void ClientAuthHandler::handle(const LoginSuccess &msg)
+{
+ Q_UNUSED(msg)
+
+ emit loginSuccessful(_account);
+}
+
+
+void ClientAuthHandler::handle(const SessionState &msg)
+{
+ disconnect(socket(), 0, this, 0); // this is the last message we shall ever get
+
+ // give up ownership of the peer; CoreSession takes responsibility now
+ _peer->setParent(0);
+ emit handshakeComplete(_peer, msg);
+}
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