20 files changed, 1234 insertions, 0 deletions

diff --git a/server/bounce_qt.pro b/server/bounce_qt.pro
new file mode 100644
index 0000000..2152506
--- /dev/null
+++ b/server/bounce_qt.pro
@@ -0,0 +1,38 @@
+#-------------------------------------------------
+#
+# Project created by QtCreator 2013-12-12T06:13:00
+#
+#-------------------------------------------------
+
+QT       += core network
+
+QT       -= gui
+
+TARGET = bounce_qt
+CONFIG   += console
+CONFIG   -= app_bundle
+
+TEMPLATE = app
+
+
+SOURCES += main.cpp \
+    ircnetwork.cpp \
+    ircnetworkconfig.cpp \
+    bouncer.cpp \
+    packetreader.cpp \
+    packetwriter.cpp \
+    socket.cpp \
+    server.cpp \
+    client.cpp \
+    testthing.cpp
+
+HEADERS += \
+    ircnetwork.h \
+    ircnetworkconfig.h \
+    bouncer.h \
+    packetreader.h \
+    packetwriter.h \
+    socket.h \
+    server.h \
+    client.h \
+    testthing.h
diff --git a/server/bouncer.cpp b/server/bouncer.cpp
new file mode 100644
index 0000000..0a38c26
--- /dev/null
+++ b/server/bouncer.cpp
@@ -0,0 +1,127 @@
+#include "bouncer.h"
+#include "ircnetwork.h"
+#include "packetwriter.h"
+#include "server.h"
+
+Bouncer *Bouncer::m_instancePtr = NULL;
+
+Bouncer *Bouncer::instance() {
+	if (!m_instancePtr)
+		m_instancePtr = new Bouncer();
+	return m_instancePtr;
+}
+
+Bouncer::Bouncer(QObject *parent) :
+	QObject(parent)
+{
+	connect(&server, SIGNAL(newConnection()), this, SLOT(connectionReceived()));
+}
+
+
+void Bouncer::setupBouncer(int port, bool ssl) {
+	m_ssl = ssl;
+
+	if (!server.listen(QHostAddress::Any, port)) {
+		qFatal("Error while listening!");
+		return;
+	}
+}
+
+void Bouncer::addNetwork(IRCNetworkConfig &config) {
+	IRCNetwork *n = new IRCNetwork(config, this);
+	networks << n;
+}
+
+void Bouncer::connectionReceived() {
+	Server *c = new Server(this);
+	clients << c;
+
+	connect(c, SIGNAL(finished()), this, SLOT(connectionFinished()));
+
+	qDebug("new connection!");
+	c->setup(server.nextPendingConnection());
+}
+
+void Bouncer::connectionFinished() {
+	Server *c = static_cast<Server *>(sender());
+
+	disconnect(c, SIGNAL(finished()), this, SLOT(connectionFinished()));
+
+	c->deleteLater();
+	clients.remove(c);
+	qDebug("connection finished and removed from list");
+}
+
+
+
+
+
+Server *Bouncer::findClientBySessionKey(quint8 *sessionKey) const {
+	foreach (Server *iter, clients) {
+		if (memcmp(sessionKey, iter->sessionKey(), Server::SessionKeySize) == 0) {
+			return iter;
+		}
+	}
+
+	return NULL;
+}
+
+void Bouncer::generateSessionKey(quint8 *output) {
+	do {
+		quint32 now = QDateTime::currentDateTime().toTime_t();
+		output[0] = (now & 0xFF);
+		output[1] = ((now >> 8) & 0xFF);
+		output[2] = ((now >> 16) & 0xFF);
+		output[3] = ((now >> 24) & 0xFF);
+
+		for (int i = 4; i < Server::SessionKeySize; i++)
+			output[i] = (qrand() & 0xFF);
+
+	} while (findClientBySessionKey(output) != NULL);
+}
+
+
+Server *Bouncer::authenticate(Server *client, QString &username, QString &password, quint8 *sessionKey) const {
+	// Check the username/password
+	if (username != "testtest")
+		return NULL;
+	if (password != "optimal")
+		return NULL;
+
+	// Is this a null session key?
+	bool isNullSessionKey = true;
+	for (int i = 0; i < Server::SessionKeySize; i++)
+		if (sessionKey[i] != 0) {
+			isNullSessionKey = false;
+			break;
+		}
+
+	// Force a new session
+	if (isNullSessionKey)
+		return client;
+
+	// Check to see if we have an existing session with this key
+	Server *takeOver = findClientBySessionKey(sessionKey);
+	if (takeOver != NULL) {
+		// Yep, we do.
+		// TODO: check that the username matches. This is a security hole otherwise.
+		return takeOver;
+	}
+
+	// Nope. Use a new session.
+	return client;
+}
+
+
+void Bouncer::broadcast(const Message &message) {
+	if (clients.empty())
+		return;
+
+	PacketWriter writer(4 + (message.text.size() * 2));
+	writer.writeString(message.text);
+
+	Packet packet(B2C_ConsoleOutput, writer.buffer());
+
+	foreach (Server *iter, clients)
+		iter->sendPacket(packet);
+}
diff --git a/server/bouncer.h b/server/bouncer.h
new file mode 100644
index 0000000..b0eb7f9
--- /dev/null
+++ b/server/bouncer.h
@@ -0,0 +1,47 @@
+#ifndef BOUNCER_H
+#define BOUNCER_H
+
+#include <QObject>
+#include <QSet>
+#include <QTcpServer>
+
+struct IRCNetworkConfig;
+class IRCNetwork;
+class Server;
+struct Message;
+
+class Bouncer : public QObject {
+	Q_OBJECT
+
+public:
+	static Bouncer *instance();
+
+	QSet<IRCNetwork *> networks;
+	QSet<Server *> clients;
+	QTcpServer server;
+
+	void setupBouncer(int port, bool ssl);
+	void addNetwork(IRCNetworkConfig &config);
+
+	Server *findClientBySessionKey(quint8 *sessionKey) const;
+	void generateSessionKey(quint8 *output);
+	Server *authenticate(Server *client, QString &username, QString &password, quint8 *sessionKey) const;
+
+	void removeClient(Server *client);
+
+	void broadcast(const Message &message);
+
+private slots:
+	void connectionReceived();
+	void connectionFinished();
+
+private:
+	static Bouncer *m_instancePtr;
+
+	bool m_ssl;
+
+	explicit Bouncer(QObject *parent = 0);
+
+};
+
+#endif // BOUNCER_H
diff --git a/server/client.cpp b/server/client.cpp
new file mode 100644
index 0000000..3952297
--- /dev/null
+++ b/server/client.cpp
@@ -0,0 +1,73 @@
+#include "client.h"
+#include "packetreader.h"
+#include "packetwriter.h"
+#include <QTcpSocket>
+
+Client::Client(QObject *parent) :
+	Socket(parent)
+{
+	setup(new QTcpSocket(this));
+
+	memset(m_sessionKey, 0, sizeof(m_sessionKey));
+}
+
+
+void Client::connectToHost(const QString &hostname, int port) {
+	socket()->connectToHost(hostname, port);
+}
+
+
+void Client::handlePacket(int type, PacketReader &reader) {
+	switch (type) {
+	case B2C_OOB_LoginSuccess:
+		reader.readBytes(m_sessionKey, SessionKeySize);
+		qDebug("Logged in successfully!");
+
+		m_handshakeStatus = 1;
+		flushPacketCache();
+
+		break;
+
+	case B2C_OOB_LoginFailed:
+		qDebug("Login failed: code %u", reader.readU32());
+		unlinkSocket(true);
+		emit finished();
+		break;
+
+	case B2C_ConsoleOutput:
+		emit consoleOutput(reader.readString(MaxConsoleStringSize));
+		break;
+	}
+}
+
+
+void Client::socketConnected() {
+	qDebug("Client connected!");
+
+	sendLoginPacket("testtest", "optimal", m_sessionKey);
+}
+
+
+void Client::sendLoginPacket(const QString &username, const QString &password, const quint8 *sessionKey) {
+	int size = 12 + SessionKeySize +
+			(username.length() * 2) + (password.length() * 2);
+
+	PacketWriter writer(size);
+	writer.writeU32(1);
+	writer.writeU32(lastReceivedPacketID());
+	writer.writeBytes(sessionKey, SessionKeySize);
+	writer.writeString(username);
+	writer.writeString(password);
+
+	Packet packet(C2B_OOB_Login, writer.buffer());
+	sendPacket(packet, /*isHandshakePacket=*/true);
+}
+
+
+void Client::consoleInput(const QString &message) {
+	PacketWriter writer(4 + (message.size() * 2));
+	writer.writeString(message);
+
+	Packet packet(C2B_ConsoleInput, writer.buffer());
+	sendPacket(packet);
+}
diff --git a/server/client.h b/server/client.h
new file mode 100644
index 0000000..82875d1
--- /dev/null
+++ b/server/client.h
@@ -0,0 +1,28 @@
+#ifndef CLIENT_H
+#define CLIENT_H
+
+#include "socket.h"
+
+class Client : public Socket
+{
+	Q_OBJECT
+public:
+	explicit Client(QObject *parent = 0);
+
+	void connectToHost(const QString &hostname, int port);
+
+public:
+	void consoleInput(const QString &message);
+signals:
+	void consoleOutput(const QString &message);
+
+protected:
+	virtual void handlePacket(int type, PacketReader &reader);
+	virtual void socketConnected();
+
+
+private:
+	void sendLoginPacket(const QString &username, const QString &password, const quint8 *sessionKey);
+};
+
+#endif // CLIENT_H
diff --git a/server/ircnetwork.cpp b/server/ircnetwork.cpp
new file mode 100644
index 0000000..e50a309
--- /dev/null
+++ b/server/ircnetwork.cpp
@@ -0,0 +1,158 @@
+#include "ircnetwork.h"
+#include "bouncer.h"
+#include <QTcpSocket>
+#include <QSslSocket>
+
+IRCNetwork::IRCNetwork(IRCNetworkConfig &config, QObject *parent) :
+	QObject(parent)
+{
+	m_config = config;
+	m_loggedIn = false;
+	m_socket = NULL;
+
+	qDebug("[%p] IRCNetwork::IRCNetwork()", this);
+}
+
+
+
+
+void IRCNetwork::startConnection() {
+	unlinkSocket();
+	qDebug("[%p] IRCNetwork::startConnection()", this);
+
+	m_readBuffer.clear();
+
+	if (m_config.useSSL) {
+		QSslSocket *ssl = new QSslSocket(this);
+		m_socket = ssl;
+
+		connect(ssl, SIGNAL(encrypted()), this, SLOT(socketConnected()));
+		connect(ssl, SIGNAL(sslErrors(QList<QSslError>)), this, SLOT(socketSslErrors(QList<QSslError>)));
+
+		ssl->ignoreSslErrors();
+		ssl->connectToHostEncrypted(m_config.hostname, m_config.port);
+	} else {
+		m_socket = new QTcpSocket(this);
+		connect(m_socket, SIGNAL(connected()), this, SLOT(socketConnected()));
+		m_socket->connectToHost(m_config.hostname, m_config.port);
+	}
+
+	connect(m_socket, SIGNAL(readyRead()), this, SLOT(socketReceived()));
+	connect(m_socket, SIGNAL(error(QAbstractSocket::SocketError)), this, SLOT(socketError(QAbstractSocket::SocketError)));
+	connect(m_socket, SIGNAL(disconnected()), this, SLOT(socketDisconnected()));
+
+	qDebug("[%p] Going...", this);
+}
+
+void IRCNetwork::unlinkSocket() {
+	markAsDisconnected();
+
+	if (m_socket != NULL) {
+		QObject::disconnect(m_socket, SIGNAL(connected()), this, SLOT(socketConnected()));
+		QObject::disconnect(m_socket, SIGNAL(readyRead()), this, SLOT(socketReceived()));
+		QObject::disconnect(m_socket, SIGNAL(error(QAbstractSocket::SocketError)), this, SLOT(socketError(QAbstractSocket::SocketError)));
+		QObject::disconnect(m_socket, SIGNAL(disconnected()), this, SLOT(socketDisconnected()));
+
+		QSslSocket *ssl = qobject_cast<QSslSocket *>(m_socket);
+		if (ssl) {
+			QObject::disconnect(ssl, SIGNAL(encrypted()), this, SLOT(socketConnected()));
+		}
+
+		m_socket->close();
+		m_socket->deleteLater();
+		m_socket = NULL;
+	}
+}
+
+
+void IRCNetwork::sendLine(const QString &line) {
+	if (m_socket == NULL) {
+		qWarning("Sending line while m_socket is null!!");
+		return;
+	}
+
+	m_socket->write(line.toUtf8());
+	m_socket->write("\r\n");
+}
+
+void IRCNetwork::socketConnected() {
+	qDebug("Connected to network socket!");
+	sendLine(QString("PASS ") + m_config.password);
+	sendLine("USER username 0 * :realname");
+	sendLine("NICK Ninjifox");
+}
+
+void IRCNetwork::socketDisconnected() {
+	qDebug("Socket disconnected!");
+	unlinkSocket();
+}
+
+void IRCNetwork::socketError(QAbstractSocket::SocketError error) {
+	qDebug("Socket error!");
+	unlinkSocket();
+}
+
+void IRCNetwork::socketSslErrors(const QList<QSslError> &errors) {
+	qDebug("Socket SSL errors!");
+	foreach (const QSslError &error, errors) {
+		qDebug("- %s", error.errorString().toLatin1().data());
+	}
+
+	qobject_cast<QSslSocket *>(m_socket)->ignoreSslErrors();
+	//unlinkSocket();
+}
+
+void IRCNetwork::socketReceived() {
+	qDebug("Data arrived!");
+
+	m_readBuffer.append(m_socket->readAll());
+
+	// Try to process as many lines as we can
+	char *buf = m_readBuffer.data();
+	int bufSize = m_readBuffer.size();
+	int lineBegin = 0;
+	int pos = 0;
+
+	while (pos < bufSize) {
+		if (buf[pos] == '\r' || buf[pos] == '\n') {
+			if (pos > lineBegin) {
+				QString line = QString::fromUtf8(&buf[lineBegin], pos - lineBegin);
+				parseLine(line);
+			}
+
+			lineBegin = pos + 1;
+		}
+
+		pos++;
+	}
+
+	// If we managed to handle anything, lop it off the buffer
+	if (pos > 0) {
+		if (pos >= bufSize) {
+			m_readBuffer.clear();
+		} else {
+			memmove(buf, &buf[pos], bufSize - pos);
+			m_readBuffer.resize(bufSize - pos);
+		}
+	}
+}
+
+
+void IRCNetwork::parseLine(const QString &line) {
+	Message message;
+	message.timestamp = QDateTime::currentDateTime();
+	message.text = line;
+
+	m_statusBuffer.messages.append(message);
+	Bouncer::instance()->broadcast(message);
+}
+
+
+void IRCNetwork::markAsDisconnected() {
+	if (!m_loggedIn)
+		return;
+
+	m_loggedIn = false;
+	// boop
+	// have to part user from channels here
+}
diff --git a/server/ircnetwork.h b/server/ircnetwork.h
new file mode 100644
index 0000000..3c4cab5
--- /dev/null
+++ b/server/ircnetwork.h
@@ -0,0 +1,90 @@
+#ifndef IRCNETWORK_H
+#define IRCNETWORK_H
+
+#include <QObject>
+#include <QMap>
+#include <QHash>
+#include <QList>
+#include <QString>
+#include <QDateTime>
+#include <QTcpSocket>
+#include <QSslError>
+#include "ircnetworkconfig.h"
+
+
+
+struct Message {
+	QDateTime timestamp;
+	QString text;
+};
+
+struct User {
+	QString nick;
+	QString hostmask;
+};
+
+struct UserInChannel {
+	User *user;
+	char modePrefix;
+};
+
+struct Buffer {
+	QList<Message> messages;
+};
+
+struct Channel : Buffer {
+	bool joined;
+	QString channelName;
+	QString topic;
+	QList<UserInChannel> users;
+};
+
+struct Query : Buffer {
+	User *partner;
+};
+
+
+
+class IRCNetwork : public QObject {
+	Q_OBJECT
+private:
+	IRCNetworkConfig m_config;
+
+	// stuff sent to us by the server when we log in
+	QMap<QChar, QChar> m_userPrefixes;
+	QMap<QChar, int> m_chanModes;
+
+	// all our state
+	QHash<QString, User *> m_users;
+	QMap<QString, Channel *> m_channels;
+	QHash<User *, Query *> m_queries;
+	Buffer m_statusBuffer;
+
+	bool m_loggedIn;
+
+public:
+	explicit IRCNetwork(IRCNetworkConfig &config, QObject *parent = 0);
+
+
+	// socket bits
+private:
+	QTcpSocket *m_socket;
+	QByteArray m_readBuffer;
+
+	void unlinkSocket();
+	void markAsDisconnected();
+	void sendLine(const QString &line);
+	void parseLine(const QString &line);
+public:
+	void startConnection();
+
+private slots:
+	void socketConnected();
+	void socketReceived();
+	void socketError(QAbstractSocket::SocketError error);
+	void socketDisconnected();
+	void socketSslErrors(const QList<QSslError> &errors);
+
+};
+
+#endif // IRCNETWORK_H
diff --git a/server/ircnetworkconfig.cpp b/server/ircnetworkconfig.cpp
new file mode 100644
index 0000000..53b9671
--- /dev/null
+++ b/server/ircnetworkconfig.cpp
@@ -0,0 +1,2 @@
+#include "ircnetworkconfig.h"
+
diff --git a/server/ircnetworkconfig.h b/server/ircnetworkconfig.h
new file mode 100644
index 0000000..bfbf098
--- /dev/null
+++ b/server/ircnetworkconfig.h
@@ -0,0 +1,13 @@
+#ifndef IRCNETWORKCONFIG_H
+#define IRCNETWORKCONFIG_H
+
+#include <QString>
+
+struct IRCNetworkConfig {
+	QString hostname;
+	int port;
+	QString password;
+	bool useSSL;
+};
+
+#endif // IRCNETWORKCONFIG_H
diff --git a/server/main.cpp b/server/main.cpp
new file mode 100644
index 0000000..f65e6bd
--- /dev/null
+++ b/server/main.cpp
@@ -0,0 +1,25 @@
+#include <QCoreApplication>
+#include "bouncer.h"
+#include "client.h"
+#include "ircnetworkconfig.h"
+#include "testthing.h"
+#include <stdio.h>
+#include <QTimer>
+
+int main(int argc, char *argv[])
+{
+	QCoreApplication a(argc, argv);
+
+	printf("[ Starting up ... ]\n");
+
+	Bouncer::instance()->setupBouncer(6744, false);
+
+	//TestThing *tt = new TestThing();
+	//QTimer::singleShot(5000, tt, SLOT(testMe()));
+
+	int retVal = a.exec();
+
+	printf("[ Complete. ]\n");
+
+	return retVal;
+}
diff --git a/server/packetreader.cpp b/server/packetreader.cpp
new file mode 100644
index 0000000..c28bcba
--- /dev/null
+++ b/server/packetreader.cpp
@@ -0,0 +1,53 @@
+#include "packetreader.h"
+
+PacketReader::PacketReader(const QByteArray &buffer) {
+	m_pointer = (const quint8 *)buffer.constData();
+	m_end = m_pointer + buffer.size();
+}
+
+PacketReader::PacketReader(const quint8 *data, int size) {
+	m_pointer = data;
+	m_end = m_pointer + size;
+}
+
+
+quint32 PacketReader::readU32() {
+	if ((m_pointer + 4) > m_end)
+		return 0;
+
+	quint32 value =
+			m_pointer[0] |
+			(m_pointer[1] << 8) |
+			(m_pointer[2] << 16) |
+			(m_pointer[3] << 24);
+
+	m_pointer += 4;
+	return value;
+}
+
+bool PacketReader::readBytes(quint8 *output, int size) {
+	if ((m_pointer + size) > m_end)
+		return false;
+
+	memcpy(output, m_pointer, size);
+	m_pointer += size;
+
+	return true;
+}
+
+QString PacketReader::readString(int maxSize) {
+	quint32 size = readU32() & ~1;
+
+	if ((m_pointer + size) > m_end)
+		return QString::null;
+	if ((size / 2) > maxSize) {
+		m_pointer += size;
+		return QString::null;
+	}
+
+	QString retVal(size / 2, QChar());
+	memcpy(retVal.data(), m_pointer, size);
+	m_pointer += size;
+
+	return retVal;
+}
diff --git a/server/packetreader.h b/server/packetreader.h
new file mode 100644
index 0000000..676981d
--- /dev/null
+++ b/server/packetreader.h
@@ -0,0 +1,21 @@
+#ifndef PACKETREADER_H
+#define PACKETREADER_H
+
+#include <QString>
+#include <QByteArray>
+
+class PacketReader {
+public:
+	PacketReader(const QByteArray &buffer);
+	PacketReader(const quint8 *data, int size);
+
+	quint32 readU32();
+	bool readBytes(quint8 *output, int size);
+	QString readString(int maxSize);
+
+private:
+	const quint8 *m_pointer;
+	const quint8 *m_end;
+};
+
+#endif // PACKETREADER_H
diff --git a/server/packetwriter.cpp b/server/packetwriter.cpp
new file mode 100644
index 0000000..e1fe700
--- /dev/null
+++ b/server/packetwriter.cpp
@@ -0,0 +1,28 @@
+#include "packetwriter.h"
+
+PacketWriter::PacketWriter(int reservedSize) {
+	m_buffer.reserve(reservedSize);
+}
+
+void PacketWriter::writeU32(quint32 value) {
+	writeBytes((const quint8 *)(&value), 4);
+}
+
+void PacketWriter::writeBytes(const quint8 *input, int size) {
+	m_buffer.append((const char *)input, size);
+}
+
+void PacketWriter::writeString(const QString &string) {
+	writeU32(string.length() * 2);
+	writeBytes((const quint8 *)string.constData(), string.length() * 2);
+}
+
+
+/*
+inline void writeU32(quint8 *buf, quint32 value) {
+	buf[0] = (value & 0xFF);
+	buf[1] = ((value >> 8) & 0xFF);
+	buf[2] = ((value >> 16) & 0xFF);
+	buf[3] = ((value >> 24) & 0xFF);
+}
+*/
diff --git a/server/packetwriter.h b/server/packetwriter.h
new file mode 100644
index 0000000..e3be778
--- /dev/null
+++ b/server/packetwriter.h
@@ -0,0 +1,21 @@
+#ifndef PACKETWRITER_H
+#define PACKETWRITER_H
+
+#include <QString>
+#include <QByteArray>
+
+class PacketWriter {
+public:
+	PacketWriter(int reservedSize = 0);
+
+	const QByteArray &buffer() const { return m_buffer; }
+
+	void writeU32(quint32 value);
+	void writeBytes(const quint8 *input, int size);
+	void writeString(const QString &string);
+
+private:
+	QByteArray m_buffer;
+};
+
+#endif // PACKETWRITER_H
diff --git a/server/server.cpp b/server/server.cpp
new file mode 100644
index 0000000..6c9412b
--- /dev/null
+++ b/server/server.cpp
@@ -0,0 +1,131 @@
+#include "server.h"
+#include "packetreader.h"
+#include "packetwriter.h"
+#include "ircnetworkconfig.h"
+#include "ircnetwork.h"
+#include "bouncer.h"
+
+Server::Server(QObject *parent) :
+	Socket(parent)
+{
+	Bouncer::instance()->generateSessionKey(m_sessionKey);
+}
+
+
+
+void Server::handlePacket(int type, PacketReader &reader) {
+	switch (type) {
+	case C2B_OOB_Login:
+		net_login(reader);
+		break;
+
+	case C2B_ConsoleInput:
+		net_consoleInput(reader.readString(MaxConsoleStringSize));
+		break;
+	}
+}
+
+
+
+void Server::net_login(PacketReader &reader) {
+	if (m_handshakeStatus > 0)
+		return;
+
+	quint32 errorCode = attemptLogin(reader);
+
+	if (errorCode > 0) {
+		// Yay, we failed somewhere above, so send out an error code
+		// and disconnect the client!
+		Packet packet(B2C_OOB_LoginFailed,
+					  QByteArray((const char *)&errorCode, sizeof(errorCode)));
+
+		sendPacket(packet, /*isHandshakePacket=*/true);
+		unlinkSocket(/*disconnect=*/true);
+	}
+}
+
+int Server::attemptLogin(PacketReader &reader) {
+	quint32 protocolVer = reader.readU32();
+	if (protocolVer != ProtocolVersion)
+		return 1;
+
+	quint32 lastReceivedID = reader.readU32();
+
+	quint8 checkSessKey[SessionKeySize];
+	if (!reader.readBytes(checkSessKey, 64))
+		return 2;
+
+	QString username = reader.readString(100);
+	QString password = reader.readString(100);
+	if (username.isNull() || password.isNull())
+		return 2;
+
+	// Parsed the packet, try out the stuff
+	Server *auth = Bouncer::instance()->authenticate(this, username, password, checkSessKey);
+	if (!auth)
+		return 3;
+
+	// Who are we?
+	if (auth != this) {
+		// Taking over another session!!
+		auth->clearAcknowledgedPackets(lastReceivedID);
+		auth->takeOverSocket(this);
+		return 0;
+	}
+
+	// We've successfully authed here, so go ahead.
+	m_identified = true;
+	sendLoginSuccess();
+
+	// Probably don't need to call flushPacketCache here:
+	// theoretically it should be empty at this point.....
+
+	return 0;
+}
+
+void Server::takeOverSocket(Socket *donor) {
+	Socket::takeOverSocket(donor);
+	sendLoginSuccess();
+
+	flushPacketCache();
+}
+
+void Server::sendLoginSuccess() {
+	PacketWriter writer(4 + SessionKeySize);
+	writer.writeU32(lastReceivedPacketID());
+	writer.writeBytes(m_sessionKey, SessionKeySize);
+
+	Packet packet(B2C_OOB_LoginSuccess, writer.buffer());
+	sendPacket(packet, /*isHandshakePacket=*/true);
+
+	m_handshakeStatus = 1;
+	flushPacketCache();
+}
+
+
+
+void Server::net_consoleInput(const QString &string) {
+	if (string.startsWith("woof"))
+		sendConsoleOutput(QString("woof back: [%1]").arg(string));
+
+	if (string.startsWith("addznc ")) {
+		IRCNetworkConfig config;
+		config.hostname = "209.20.91.134";
+		config.port = 1191;
+		config.password = string.mid(7);
+		config.useSSL = true;
+		Bouncer::instance()->addNetwork(config);
+	}
+
+	if (string.startsWith("connect")) {
+		Bouncer::instance()->networks.values()[0]->startConnection();
+	}
+}
+
+void Server::sendConsoleOutput(const QString &string) {
+	PacketWriter writer(4 + (string.size() * 2));
+	writer.writeString(string);
+
+	Packet packet(B2C_ConsoleOutput, writer.buffer());
+	sendPacket(packet);
+}
diff --git a/server/server.h b/server/server.h
new file mode 100644
index 0000000..5aab270
--- /dev/null
+++ b/server/server.h
@@ -0,0 +1,24 @@
+#ifndef SERVER_H
+#define SERVER_H
+
+#include "socket.h"
+
+class Server : public Socket
+{
+	Q_OBJECT
+public:
+	explicit Server(QObject *parent = 0);
+
+protected:
+	virtual void takeOverSocket(Socket *donor);
+	virtual void handlePacket(int type, PacketReader &reader);
+
+	void net_login(PacketReader &reader);
+	int attemptLogin(PacketReader &reader);
+	void sendLoginSuccess();
+
+	void net_consoleInput(const QString &string);
+	void sendConsoleOutput(const QString &string);
+};
+
+#endif // SERVER_H
diff --git a/server/socket.cpp b/server/socket.cpp
new file mode 100644
index 0000000..56c5258
--- /dev/null
+++ b/server/socket.cpp
@@ -0,0 +1,214 @@
+#include "socket.h"
+#include "bouncer.h"
+#include "packetreader.h"
+
+Socket::Socket(QObject *parent) :
+	QObject(parent)
+{
+	m_identified = false;
+	m_socket = NULL;
+
+	m_lastSentPacketID = 0;
+	m_lastReceivedPacketID = 0;
+	qDebug("[%p] Socket::Socket()", this);
+}
+
+Socket::~Socket() {
+	unlinkSocket(/*disconnect=*/true);
+	qDebug("[%p] Socket::~Socket()", this);
+}
+
+
+
+
+void Socket::setup(QTcpSocket *socket) {
+	unlinkSocket(/*disconnect=*/true);
+
+	socket->setParent(this);
+	m_socket = socket;
+
+	m_readBuffer.clear();
+	m_handshakeStatus = 0;
+
+	connect(socket, SIGNAL(connected()), this, SLOT(socketConnected()));
+	connect(socket, SIGNAL(readyRead()), this, SLOT(socketReceived()));
+	connect(socket, SIGNAL(error(QAbstractSocket::SocketError)), this, SLOT(socketError(QAbstractSocket::SocketError)));
+	connect(socket, SIGNAL(disconnected()), this, SLOT(socketDisconnected()));
+}
+
+void Socket::unlinkSocket(bool disconnect) {
+	if (!m_socket)
+		return;
+
+	qDebug("[%p] Socket::unlinkSocket...", this);
+
+	QObject::disconnect(m_socket, SIGNAL(connected()), this, SLOT(socketConnected()));
+	QObject::disconnect(m_socket, SIGNAL(readyRead()), this, SLOT(socketReceived()));
+	QObject::disconnect(m_socket, SIGNAL(error(QAbstractSocket::SocketError)), this, SLOT(socketError(QAbstractSocket::SocketError)));
+	QObject::disconnect(m_socket, SIGNAL(disconnected()), this, SLOT(socketDisconnected()));
+
+	if (disconnect) {
+		m_socket->flush();
+		m_socket->close();
+		m_socket->deleteLater();
+	}
+	m_socket = NULL;
+}
+
+
+void Socket::socketReceived() {
+	QByteArray readIt = m_socket->readAll();
+	m_readBuffer.append(readIt);
+
+	quint8 *buf = (quint8 *)m_readBuffer.data();
+	int bufSize = m_readBuffer.length();
+	int position = 0;
+
+	while ((position + 8) <= bufSize) {
+		PacketReader reader(&buf[position], bufSize - position);
+
+		quint32 packetType = reader.readU32();
+		quint32 packetSize = reader.readU32();
+
+		if (bufSize > 128000 || packetSize > 128000) {
+			// Something's not right here...
+			// (TODO: investigate if this is really a good thing to do?)
+			m_readBuffer.clear();
+			return;
+		}
+
+		// Out-of-band packets have 8 bytes header, otherwise 16 bytes
+		int headerSize = 8;
+		if (!(packetType & 0x80000000))
+			headerSize = 16;
+
+		if (bufSize >= (position + packetSize + headerSize)) {
+			// We have the whole of this packet
+			// If it's not out-of-band, deal with the IDs
+
+			qDebug("Recv: [%08x] %d bytes", packetType, packetSize);
+
+			bool isUnnecessaryPacket = false;
+
+			if (!(packetType & 0x80000000)) {
+				quint32 packetID = reader.readU32();
+				quint32 lastReceivedID = reader.readU32();
+
+				// Clear messages they already have from our own cache
+				clearAcknowledgedPackets(lastReceivedID);
+
+				if (packetID > m_lastReceivedPacketID) {
+					// New packet, so update this
+					m_lastReceivedPacketID = packetID;
+				} else {
+					// We already got this packet (presumably)...
+					// ...so ignore it!
+					isUnnecessaryPacket = true;
+				}
+
+				qDebug("      packetID=%d, lastReceivedID=%d", packetID, lastReceivedID);
+			}
+
+			// If we haven't received this message, handle it!
+			if (!isUnnecessaryPacket) {
+				PacketReader subReader(&buf[position + headerSize], packetSize);
+				handlePacket(packetType, subReader);
+			}
+
+			position += headerSize + packetSize;
+		} else {
+			// We don't have the whole of this packet yet, so wait.
+			break;
+		}
+	}
+
+
+	// If we managed to handle anything, lop it off the buffer
+	if (position > 0) {
+		if (position >= bufSize) {
+			m_readBuffer.clear();
+		} else {
+			memmove(buf, &buf[position], bufSize - position);
+			m_readBuffer.resize(bufSize - position);
+		}
+	}
+}
+
+
+void Socket::socketConnected() {
+	// we do nothing here, but this is used by Client
+}
+
+void Socket::socketError(QAbstractSocket::SocketError error) {
+	// welp!
+	qDebug("Connection error!");
+	unlinkSocket(/*disconnect=*/true);
+	if (!m_identified)
+		emit finished();
+}
+
+void Socket::socketDisconnected() {
+	// welp 2.
+	qDebug("Connection closed!");
+	unlinkSocket(/*disconnect=*/true);
+	if (!m_identified)
+		emit finished();
+}
+
+
+void Socket::takeOverSocket(Socket *donor) {
+	setup(donor->m_socket);
+	m_readBuffer = donor->m_readBuffer;
+	donor->unlinkSocket(/*disconnect=*/false);
+	emit donor->finished();
+}
+
+
+void Socket::sendPacketOverSocket(const Packet &packet) {
+	quint32 packetHeader[4];
+	int headerSize = 8;
+	packetHeader[0] = packet.type;
+	packetHeader[1] = packet.data.size();
+
+	if (!packet.isOutOfBand()) {
+		headerSize = 16;
+		packetHeader[2] = packet.id;
+		packetHeader[3] = m_lastReceivedPacketID;
+	}
+
+	m_socket->write((const char *)&packetHeader, headerSize);
+	m_socket->write(packet.data);
+}
+
+
+void Socket::clearAcknowledgedPackets(int lastReceivedID) {
+	while (!m_packetCache.empty() && m_packetCache.at(0).id <= lastReceivedID)
+		m_packetCache.removeFirst();
+}
+
+void Socket::flushPacketCache() {
+	foreach (const Packet &packet, m_packetCache)
+		sendPacketOverSocket(packet);
+}
+
+
+void Socket::handlePacket(int type, PacketReader &reader) {
+	// stub
+	(void)type;
+	(void)reader;
+}
+
+
+void Socket::sendPacket(Packet &packet, bool isHandshakePacket) {
+	if (!packet.isOutOfBand()) {
+		m_lastSentPacketID++;
+		packet.id = m_lastSentPacketID;
+
+		m_packetCache.append(packet);
+	}
+
+	if ((m_socket != NULL) && (isHandshakePacket || (m_handshakeStatus > 0)))
+		sendPacketOverSocket(packet);
+	else if (packet.isOutOfBand())
+		qWarning("WARNING: Out-of-band message %08x was lost!", packet.type);
+}
diff --git a/server/socket.h b/server/socket.h
new file mode 100644
index 0000000..44c8c99
--- /dev/null
+++ b/server/socket.h
@@ -0,0 +1,110 @@
+#ifndef SOCKET_H
+#define SOCKET_H
+
+#include <QObject>
+#include <QByteArray>
+#include <QTcpSocket>
+#include <QList>
+
+class PacketReader;
+
+
+enum {
+	C2B_OOB_Login = 0x80000001,
+
+	B2C_OOB_LoginSuccess = 0x80000001,
+	B2C_OOB_LoginFailed = 0x80000002,
+
+	C2B_ConsoleInput = 1,
+	B2C_ConsoleOutput = 1
+};
+
+
+struct Packet {
+	int id;
+	quint32 type;
+	QByteArray data;
+
+	Packet(quint32 type_) {
+		type = type_;
+	}
+	Packet(quint32 type_, const QByteArray &data_) {
+		type = type_;
+		data = data_;
+	}
+
+	bool isOutOfBand() const {
+		return ((type & 0x80000000) != 0);
+	}
+};
+
+
+
+class Socket : public QObject {
+	Q_OBJECT
+public:
+	enum {
+		SessionKeySize = 64,
+		MaxConsoleStringSize = 2000,
+		ProtocolVersion = 1
+	};
+
+	explicit Socket(QObject *parent = 0);
+	~Socket();
+
+	void setup(QTcpSocket *socket);
+
+	const quint8 *sessionKey() const { return m_sessionKey; }
+
+signals:
+	void finished();
+
+
+
+	// Socket management
+protected:
+	void unlinkSocket(bool disconnect);
+	virtual void takeOverSocket(Socket *donor);
+
+protected slots:
+	virtual void socketConnected();
+private slots:
+	void socketReceived();
+	void socketError(QAbstractSocket::SocketError error);
+	void socketDisconnected();
+
+protected:
+	QTcpSocket *socket() const { return m_socket; }
+private:
+	QTcpSocket *m_socket;
+	QByteArray m_readBuffer;
+
+	void sendPacketOverSocket(const Packet &packet);
+
+
+
+protected:
+	// Connection state
+	int m_handshakeStatus;
+	bool m_identified;
+
+	quint8 m_sessionKey[SessionKeySize];
+
+	// Packets system
+public:
+	void sendPacket(Packet &packet, bool isHandshakePacket = false);
+protected:
+	virtual void handlePacket(int type, PacketReader &reader);
+	void flushPacketCache();
+	void clearAcknowledgedPackets(int lastReceivedID);
+
+	int lastReceivedPacketID() const { return m_lastReceivedPacketID; }
+
+private:
+	QList<Packet> m_packetCache;
+	int m_lastSentPacketID;
+	int m_lastReceivedPacketID;
+
+};
+
+#endif // CLIENT_H
diff --git a/server/testthing.cpp b/server/testthing.cpp
new file mode 100644
index 0000000..0c0d5e9
--- /dev/null
+++ b/server/testthing.cpp
@@ -0,0 +1,13 @@
+#include "testthing.h"
+#include <QTcpServer>
+#include "client.h"
+
+TestThing::TestThing(QObject *parent) : QObject(parent) {
+	c = new Client(this);
+}
+
+void TestThing::testMe() {
+	c->connectToHost("localhost", 6744);
+}
+
+
diff --git a/server/testthing.h b/server/testthing.h
new file mode 100644
index 0000000..e402f8d
--- /dev/null
+++ b/server/testthing.h
@@ -0,0 +1,18 @@
+#ifndef TESTTHING_H
+#define TESTTHING_H
+
+#include <QObject>
+class Client;
+
+class TestThing : public QObject {
+	Q_OBJECT
+public:
+	explicit TestThing(QObject *parent = 0);
+	Client *c;
+
+public slots:
+	void testMe();
+};
+
+
+#endif // TESTTHING_H