--- /dev/null
+/***************************************************************************
+ * Copyright (C) 2005-2012 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 "legacyconnection.h"
+
+LegacyConnection::LegacyConnection(QTcpSocket *socket, QObject *parent)
+ : RemoteConnection(socket, parent),
+ _blockSize(0),
+ _useCompression(false)
+{
+ _stream.setDevice(socket);
+ _stream.setVersion(QDataStream::Qt_4_2);
+
+ connect(socket, SIGNAL(readyRead()), SLOT(socketDataAvailable()));
+}
+
+
+void LegacyConnection::setSignalProxy(SignalProxy *proxy)
+{
+ RemoteConnection::setSignalProxy(proxy);
+
+ if (proxy) {
+ // enable compression now if requested - the initial handshake is uncompressed in the legacy protocol!
+ _useCompression = socket()->property("UseCompression").toBool();
+ }
+
+}
+
+
+void LegacyConnection::socketDataAvailable()
+{
+ QVariant item;
+ while (readSocketData(item)) {
+ // if no sigproxy is set, we're in handshake mode and let the data be handled elsewhere
+ if (!signalProxy())
+ emit dataReceived(item);
+ else
+ handlePackedFunc(item);
+ }
+}
+
+
+bool LegacyConnection::readSocketData(QVariant &item)
+{
+ if (_blockSize == 0) {
+ if (socket()->bytesAvailable() < 4)
+ return false;
+ _stream >> _blockSize;
+ }
+
+ if (_blockSize > 1 << 22) {
+ close("Peer tried to send package larger than max package size!");
+ return false;
+ }
+
+ if (_blockSize == 0) {
+ close("Peer tried to send 0 byte package!");
+ return false;
+ }
+
+ if (socket()->bytesAvailable() < _blockSize) {
+ emit transferProgress(socket()->bytesAvailable(), _blockSize);
+ return false;
+ }
+
+ emit transferProgress(_blockSize, _blockSize);
+
+ _blockSize = 0;
+
+ if (_useCompression) {
+ QByteArray rawItem;
+ _stream >> rawItem;
+
+ int nbytes = rawItem.size();
+ if (nbytes <= 4) {
+ const char *data = rawItem.constData();
+ if (nbytes < 4 || (data[0] != 0 || data[1] != 0 || data[2] != 0 || data[3] != 0)) {
+ close("Peer sent corrupted compressed data!");
+ return false;
+ }
+ }
+
+ rawItem = qUncompress(rawItem);
+
+ QDataStream itemStream(&rawItem, QIODevice::ReadOnly);
+ itemStream.setVersion(QDataStream::Qt_4_2);
+ itemStream >> item;
+ }
+ else {
+ _stream >> item;
+ }
+
+ if (!item.isValid()) {
+ close("Peer sent corrupt data: unable to load QVariant!");
+ return false;
+ }
+
+ return true;
+}
+
+
+void LegacyConnection::writeSocketData(const QVariant &item)
+{
+ if (!socket()->isOpen()) {
+ qWarning() << Q_FUNC_INFO << "Can't write to a closed socket!";
+ return;
+ }
+
+ QByteArray block;
+ QDataStream out(&block, QIODevice::WriteOnly);
+ out.setVersion(QDataStream::Qt_4_2);
+
+ if (_useCompression) {
+ QByteArray rawItem;
+ QDataStream itemStream(&rawItem, QIODevice::WriteOnly);
+ itemStream.setVersion(QDataStream::Qt_4_2);
+ itemStream << item;
+
+ rawItem = qCompress(rawItem);
+
+ out << rawItem;
+ }
+ else {
+ out << item;
+ }
+
+ _stream << block; // also writes the length as part of the serialization format
+}
+
+
+void LegacyConnection::handlePackedFunc(const QVariant &packedFunc)
+{
+ QVariantList params(packedFunc.toList());
+
+ if (params.isEmpty()) {
+ qWarning() << Q_FUNC_INFO << "Received incompatible data:" << packedFunc;
+ return;
+ }
+
+ RequestType requestType = (RequestType)params.takeFirst().value<int>();
+ switch (requestType) {
+ case Sync: {
+ if (params.count() < 3) {
+ qWarning() << Q_FUNC_INFO << "Received invalid sync call:" << params;
+ return;
+ }
+ QByteArray className = params.takeFirst().toByteArray();
+ QString objectName = params.takeFirst().toString();
+ QByteArray slotName = params.takeFirst().toByteArray();
+ handle(SignalProxy::SyncMessage(className, objectName, slotName, params));
+ break;
+ }
+ case RpcCall: {
+ if (params.empty()) {
+ qWarning() << Q_FUNC_INFO << "Received empty RPC call!";
+ return;
+ }
+ QByteArray slotName = params.takeFirst().toByteArray();
+ handle(SignalProxy::RpcCall(slotName, params));
+ break;
+ }
+ case InitRequest: {
+ if (params.count() != 2) {
+ qWarning() << Q_FUNC_INFO << "Received invalid InitRequest:" << params;
+ return;
+ }
+ QByteArray className = params[0].toByteArray();
+ QString objectName = params[1].toString();
+ handle(SignalProxy::InitRequest(className, objectName));
+ break;
+ }
+ case InitData: {
+ if (params.count() != 3) {
+ qWarning() << Q_FUNC_INFO << "Received invalid InitData:" << params;
+ return;
+ }
+ QByteArray className = params[0].toByteArray();
+ QString objectName = params[1].toString();
+ QVariantMap initData = params[2].toMap();
+ handle(SignalProxy::InitData(className, objectName, initData));
+ break;
+ }
+ case HeartBeat: {
+ if (params.count() != 1) {
+ qWarning() << Q_FUNC_INFO << "Received invalid HeartBeat:" << params;
+ return;
+ }
+ // The legacy protocol would only send a QTime, no QDateTime
+ // so we assume it's sent today, which works in exactly the same cases as it did in the old implementation
+ QDateTime dateTime = QDateTime::currentDateTimeUtc();
+ dateTime.setTime(params[0].toTime());
+ handle(RemoteConnection::HeartBeat(dateTime));
+ break;
+ }
+ case HeartBeatReply: {
+ if (params.count() != 1) {
+ qWarning() << Q_FUNC_INFO << "Received invalid HeartBeat:" << params;
+ return;
+ }
+ // The legacy protocol would only send a QTime, no QDateTime
+ // so we assume it's sent today, which works in exactly the same cases as it did in the old implementation
+ QDateTime dateTime = QDateTime::currentDateTimeUtc();
+ dateTime.setTime(params[0].toTime());
+ handle(RemoteConnection::HeartBeatReply(dateTime));
+ break;
+ }
+
+ }
+}
+
+
+void LegacyConnection::dispatch(const SignalProxy::SyncMessage &msg)
+{
+ dispatchPackedFunc(QVariantList() << (qint16)Sync << msg.className() << msg.objectName() << msg.slotName() << msg.params());
+}
+
+
+void LegacyConnection::dispatch(const SignalProxy::RpcCall &msg)
+{
+ dispatchPackedFunc(QVariantList() << (qint16)RpcCall << msg.slotName() << msg.params());
+}
+
+
+void LegacyConnection::dispatch(const SignalProxy::InitRequest &msg)
+{
+ dispatchPackedFunc(QVariantList() << (qint16)InitRequest << msg.className() << msg.objectName());
+}
+
+
+void LegacyConnection::dispatch(const SignalProxy::InitData &msg)
+{
+ dispatchPackedFunc(QVariantList() << (qint16)InitData << msg.className() << msg.objectName() << msg.initData());
+}
+
+
+void LegacyConnection::dispatch(const RemoteConnection::HeartBeat &msg)
+{
+ dispatchPackedFunc(QVariantList() << (qint16)HeartBeat << msg.timestamp().time());
+}
+
+
+void LegacyConnection::dispatch(const RemoteConnection::HeartBeatReply &msg)
+{
+ dispatchPackedFunc(QVariantList() << (qint16)HeartBeatReply << msg.timestamp().time());
+}
+
+
+void LegacyConnection::dispatchPackedFunc(const QVariantList &packedFunc)
+{
+ writeSocketData(QVariant(packedFunc));
+}
projects / quassel.git / blobdiff