1 /***************************************************************************
2 * Copyright (C) 2005-2014 by the Quassel Project *
3 * devel@quassel-irc.org *
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. *
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. *
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 ***************************************************************************/
21 #include "coreauthhandler.h"
24 # include <QSslSocket>
30 #include "protocols/legacy/legacypeer.h"
32 using namespace Protocol;
34 CoreAuthHandler::CoreAuthHandler(QTcpSocket *socket, QObject *parent)
35 : AuthHandler(parent),
37 _magicReceived(false),
39 _clientRegistered(false),
40 _connectionFeatures(0)
43 connect(socket, SIGNAL(readyRead()), SLOT(onReadyRead()));
45 // TODO: Timeout for the handshake phase
50 void CoreAuthHandler::onReadyRead()
52 if (socket()->bytesAvailable() < 4)
55 // once we have selected a peer, we certainly don't want to read more data!
59 if (!_magicReceived) {
61 socket()->peek((char*)&magic, 4);
62 magic = qFromBigEndian<quint32>(magic);
64 if ((magic & 0xffffff00) != Protocol::magic) {
65 // no magic, assume legacy protocol
66 qDebug() << "Legacy client detected, switching to compatibility mode";
68 RemotePeer *peer = new LegacyPeer(this, socket(), this);
69 connect(peer, SIGNAL(protocolVersionMismatch(int,int)), SLOT(onProtocolVersionMismatch(int,int)));
74 _magicReceived = true;
75 quint8 features = magic & 0xff;
76 // figure out which connection features we'll use based on the client's support
77 if (Core::sslSupported() && (features & Protocol::Encryption))
78 _connectionFeatures |= Protocol::Encryption;
79 if (features & Protocol::Compression)
80 _connectionFeatures |= Protocol::Compression;
82 socket()->read((char*)&magic, 4); // read the 4 bytes we've just peeked at
85 // read the list of protocols supported by the client
86 while (socket()->bytesAvailable() >= 4) {
88 socket()->read((char*)&data, 4);
89 data = qFromBigEndian<quint32>(data);
91 Protocol::Type type = static_cast<Protocol::Type>(data & 0xff);
92 quint16 protoFeatures = static_cast<quint16>(data>>8 & 0xffff);
93 _supportedProtos.append(PeerFactory::ProtoDescriptor(type, protoFeatures));
95 if (data >= 0x80000000) { // last protocol
96 RemotePeer *peer = PeerFactory::createPeer(_supportedProtos, this, socket(), this);
97 if (peer->protocol() == Protocol::LegacyProtocol) {
99 connect(peer, SIGNAL(protocolVersionMismatch(int,int)), SLOT(onProtocolVersionMismatch(int,int)));
104 quint32 reply = peer->protocol() | peer->enabledFeatures()<<8 | _connectionFeatures<<24;
105 reply = qToBigEndian<quint32>(reply);
106 socket()->write((char*)&reply, 4);
109 if (!_legacy && (_connectionFeatures & Protocol::Encryption))
110 startSsl(); // legacy peer enables it later
117 void CoreAuthHandler::setPeer(RemotePeer *peer)
120 disconnect(socket(), SIGNAL(readyRead()), this, SLOT(onReadyRead()));
123 // only in compat mode
124 void CoreAuthHandler::onProtocolVersionMismatch(int actual, int expected)
126 qWarning() << qPrintable(tr("Client")) << _peer->description() << qPrintable(tr("too old, rejecting."));
127 QString errorString = tr("<b>Your Quassel Client is too old!</b><br>"
128 "This core needs at least client/core protocol version %1 (got: %2).<br>"
129 "Please consider upgrading your client.").arg(expected, actual);
130 _peer->dispatch(ClientDenied(errorString));
135 bool CoreAuthHandler::checkClientRegistered()
137 if (!_clientRegistered) {
138 qWarning() << qPrintable(tr("Client")) << qPrintable(socket()->peerAddress().toString()) << qPrintable(tr("did not send a registration message before trying to login, rejecting."));
139 _peer->dispatch(ClientDenied(tr("<b>Client not initialized!</b><br>You need to send a registration message before trying to login.")));
147 void CoreAuthHandler::handle(const RegisterClient &msg)
151 useSsl = Core::sslSupported() && msg.sslSupported;
153 useSsl = _connectionFeatures & Protocol::Encryption;
155 if (Quassel::isOptionSet("require-ssl") && !useSsl) {
156 _peer->dispatch(ClientDenied(tr("<b>SSL is required!</b><br>You need to use SSL in order to connect to this core.")));
161 QVariantList backends;
162 bool configured = Core::isConfigured();
164 backends = Core::backendInfo();
166 // useSsl and startTime are only used for the legacy protocol
167 _peer->dispatch(ClientRegistered(Quassel::features(), configured, backends, useSsl, Core::instance()->startTime()));
169 if (_legacy && useSsl)
172 _clientRegistered = true;
176 void CoreAuthHandler::handle(const SetupData &msg)
178 if (!checkClientRegistered())
181 QString result = Core::setup(msg.adminUser, msg.adminPassword, msg.backend, msg.setupData);
182 if (!result.isEmpty())
183 _peer->dispatch(SetupFailed(result));
185 _peer->dispatch(SetupDone());
189 void CoreAuthHandler::handle(const Login &msg)
191 if (!checkClientRegistered())
194 UserId uid = Core::validateUser(msg.user, msg.password);
196 _peer->dispatch(LoginFailed(tr("<b>Invalid username or password!</b><br>The username/password combination you supplied could not be found in the database.")));
199 _peer->dispatch(LoginSuccess());
201 quInfo() << qPrintable(tr("Client %1 initialized and authenticated successfully as \"%2\" (UserId: %3).").arg(socket()->peerAddress().toString(), msg.user, QString::number(uid.toInt())));
203 disconnect(socket(), 0, this, 0);
204 disconnect(_peer, 0, this, 0);
205 _peer->setParent(0); // Core needs to take care of this one now!
207 socket()->flush(); // Make sure all data is sent before handing over the peer (and socket) to the session thread (bug 682)
208 emit handshakeComplete(_peer, uid);
214 void CoreAuthHandler::startSsl()
217 QSslSocket *sslSocket = qobject_cast<QSslSocket *>(socket());
220 qDebug() << qPrintable(tr("Starting encryption for Client:")) << _peer->description();
221 connect(sslSocket, SIGNAL(sslErrors(const QList<QSslError> &)), SLOT(onSslErrors()));
222 sslSocket->flush(); // ensure that the write cache is flushed before we switch to ssl (bug 682)
223 sslSocket->startServerEncryption();
224 #endif /* HAVE_SSL */
229 void CoreAuthHandler::onSslErrors()
231 QSslSocket *sslSocket = qobject_cast<QSslSocket *>(socket());
233 sslSocket->ignoreSslErrors();